1 | /* |
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2 | rsvg.c: SAX-based renderer for SVG files into a GdkPixbuf. |
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3 | |
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4 | Copyright (C) 2000 Eazel, Inc. |
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5 | Copyright (C) 2002 Dom Lachowicz <cinamod@hotmail.com> |
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6 | |
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7 | This program is free software; you can redistribute it and/or |
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8 | modify it under the terms of the GNU Library General Public License as |
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9 | published by the Free Software Foundation; either version 2 of the |
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10 | License, or (at your option) any later version. |
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11 | |
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12 | This program is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 | Library General Public License for more details. |
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16 | |
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17 | You should have received a copy of the GNU Library General Public |
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18 | License along with this program; if not, write to the |
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19 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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20 | Boston, MA 02111-1307, USA. |
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21 | |
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22 | Author: Raph Levien <raph@artofcode.com> |
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23 | */ |
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24 | |
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25 | #include "config.h" |
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26 | #include "rsvg.h" |
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27 | |
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28 | #include <math.h> |
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29 | #include <string.h> |
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30 | #include <stdarg.h> |
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31 | |
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32 | #include <libart_lgpl/art_affine.h> |
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33 | #include <libart_lgpl/art_vpath_bpath.h> |
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34 | #include <libart_lgpl/art_vpath_dash.h> |
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35 | #include <libart_lgpl/art_svp_vpath_stroke.h> |
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36 | #include <libart_lgpl/art_svp_vpath.h> |
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37 | #include <libart_lgpl/art_svp_intersect.h> |
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38 | #include <libart_lgpl/art_render_mask.h> |
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39 | #include <libart_lgpl/art_render_svp.h> |
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40 | #include <libart_lgpl/art_rgba.h> |
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41 | #include <libart_lgpl/art_rgb_affine.h> |
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42 | #include <libart_lgpl/art_rgb_rgba_affine.h> |
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43 | |
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44 | #include <libxml/SAX.h> |
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45 | #include <libxml/xmlmemory.h> |
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46 | |
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47 | #include <pango/pangoft2.h> |
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48 | |
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49 | #if ENABLE_GNOME_VFS |
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50 | #include <libgnomevfs/gnome-vfs.h> |
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51 | #endif |
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52 | |
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53 | #include "rsvg-bpath-util.h" |
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54 | #include "rsvg-path.h" |
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55 | #include "rsvg-css.h" |
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56 | #include "rsvg-paint-server.h" |
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57 | |
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58 | #define SVG_BUFFER_SIZE (1024 * 8) |
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59 | |
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60 | /* 4/3 * (1-cos 45)/sin 45 = 4/3 * sqrt(2) - 1 */ |
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61 | #define RSVG_ARC_MAGIC ((double) 0.5522847498) |
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62 | |
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63 | /* |
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64 | * This is configurable at runtime |
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65 | */ |
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66 | #define RSVG_DEFAULT_DPI 90.0 |
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67 | static double internal_dpi = RSVG_DEFAULT_DPI; |
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68 | |
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69 | typedef struct { |
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70 | double affine[6]; |
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71 | |
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72 | gint opacity; /* 0..255 */ |
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73 | |
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74 | RsvgPaintServer *fill; |
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75 | gint fill_opacity; /* 0..255 */ |
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76 | |
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77 | RsvgPaintServer *stroke; |
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78 | gint stroke_opacity; /* 0..255 */ |
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79 | double stroke_width; |
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80 | double miter_limit; |
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81 | |
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82 | ArtPathStrokeCapType cap; |
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83 | ArtPathStrokeJoinType join; |
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84 | |
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85 | double font_size; |
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86 | char *font_family; |
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87 | guint text_offset; |
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88 | |
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89 | guint32 stop_color; /* rgb */ |
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90 | gint stop_opacity; /* 0..255 */ |
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91 | |
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92 | ArtVpathDash dash; |
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93 | |
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94 | GdkPixbuf *save_pixbuf; |
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95 | } RsvgState; |
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96 | |
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97 | typedef struct RsvgSaxHandler RsvgSaxHandler; |
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98 | |
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99 | struct RsvgSaxHandler { |
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100 | void (*free) (RsvgSaxHandler *self); |
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101 | void (*start_element) (RsvgSaxHandler *self, const xmlChar *name, const xmlChar **atts); |
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102 | void (*end_element) (RsvgSaxHandler *self, const xmlChar *name); |
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103 | void (*characters) (RsvgSaxHandler *self, const xmlChar *ch, int len); |
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104 | }; |
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105 | |
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106 | struct RsvgHandle { |
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107 | RsvgSizeFunc size_func; |
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108 | gpointer user_data; |
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109 | GDestroyNotify user_data_destroy; |
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110 | GdkPixbuf *pixbuf; |
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111 | |
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112 | /* stack; there is a state for each element */ |
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113 | RsvgState *state; |
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114 | int n_state; |
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115 | int n_state_max; |
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116 | |
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117 | RsvgDefs *defs; |
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118 | GHashTable *css_props; |
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119 | |
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120 | /* not a handler stack. each nested handler keeps |
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121 | * track of its parent |
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122 | */ |
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123 | RsvgSaxHandler *handler; |
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124 | int handler_nest; |
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125 | |
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126 | GHashTable *entities; /* g_malloc'd string -> xmlEntityPtr */ |
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127 | |
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128 | PangoContext *pango_context; |
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129 | xmlParserCtxtPtr ctxt; |
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130 | GError **error; |
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131 | |
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132 | int width; |
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133 | int height; |
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134 | double dpi; |
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135 | }; |
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136 | |
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137 | static gdouble |
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138 | rsvg_viewport_percentage (gdouble width, gdouble height) |
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139 | { |
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140 | return ((width * width) + (height * height)) / M_SQRT2; |
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141 | } |
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142 | |
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143 | static void |
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144 | rsvg_state_init (RsvgState *state) |
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145 | { |
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146 | memset (state, 0, sizeof (*state)); |
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147 | |
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148 | art_affine_identity (state->affine); |
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149 | |
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150 | state->opacity = 0xff; |
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151 | state->fill = rsvg_paint_server_parse (NULL, "#000"); |
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152 | state->fill_opacity = 0xff; |
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153 | state->stroke_opacity = 0xff; |
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154 | state->stroke_width = 1; |
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155 | state->miter_limit = 4; |
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156 | state->cap = ART_PATH_STROKE_CAP_BUTT; |
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157 | state->join = ART_PATH_STROKE_JOIN_MITER; |
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158 | state->stop_opacity = 0xff; |
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159 | } |
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160 | |
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161 | static void |
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162 | rsvg_state_clone (RsvgState *dst, const RsvgState *src) |
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163 | { |
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164 | gint i; |
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165 | |
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166 | *dst = *src; |
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167 | dst->font_family = g_strdup (src->font_family); |
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168 | rsvg_paint_server_ref (dst->fill); |
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169 | rsvg_paint_server_ref (dst->stroke); |
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170 | dst->save_pixbuf = NULL; |
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171 | |
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172 | if (src->dash.n_dash > 0) |
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173 | { |
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174 | dst->dash.dash = g_new (gdouble, src->dash.n_dash); |
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175 | for (i = 0; i < src->dash.n_dash; i++) |
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176 | dst->dash.dash[i] = src->dash.dash[i]; |
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177 | } |
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178 | } |
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179 | |
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180 | static void |
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181 | rsvg_state_finalize (RsvgState *state) |
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182 | { |
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183 | g_free (state->font_family); |
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184 | rsvg_paint_server_unref (state->fill); |
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185 | rsvg_paint_server_unref (state->stroke); |
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186 | |
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187 | if (state->dash.n_dash != 0) |
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188 | g_free (state->dash.dash); |
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189 | } |
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190 | |
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191 | static void |
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192 | rsvg_ctx_free_helper (gpointer key, gpointer value, gpointer user_data) |
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193 | { |
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194 | xmlEntityPtr entval = (xmlEntityPtr)value; |
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195 | |
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196 | /* key == entval->name, so it's implicitly freed below */ |
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197 | |
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198 | g_free ((char *) entval->name); |
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199 | g_free ((char *) entval->ExternalID); |
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200 | g_free ((char *) entval->SystemID); |
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201 | xmlFree (entval->content); |
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202 | xmlFree (entval->orig); |
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203 | g_free (entval); |
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204 | } |
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205 | |
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206 | static void |
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207 | rsvg_pixmap_destroy (guchar *pixels, gpointer data) |
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208 | { |
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209 | g_free (pixels); |
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210 | } |
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211 | |
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212 | static void |
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213 | rsvg_start_svg (RsvgHandle *ctx, const xmlChar **atts) |
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214 | { |
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215 | int i; |
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216 | int width = -1, height = -1, x = -1, y = -1; |
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217 | int rowstride; |
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218 | art_u8 *pixels; |
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219 | gint percent, em, ex; |
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220 | RsvgState *state; |
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221 | gboolean has_alpha = TRUE; |
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222 | gint new_width, new_height; |
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223 | double x_zoom = 1.; |
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224 | double y_zoom = 1.; |
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225 | |
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226 | double vbox_x = 0, vbox_y = 0, vbox_w = 0, vbox_h = 0; |
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227 | gboolean has_vbox = TRUE; |
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228 | |
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229 | if (atts != NULL) |
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230 | { |
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231 | for (i = 0; atts[i] != NULL; i += 2) |
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232 | { |
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233 | /* x & y should be ignored since we should always be the outermost SVG, |
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234 | at least for now, but i'll include them here anyway */ |
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235 | if (!strcmp ((char *)atts[i], "width")) |
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236 | width = rsvg_css_parse_length ((char *)atts[i + 1], ctx->dpi, &percent, &em, &ex); |
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237 | else if (!strcmp ((char *)atts[i], "height")) |
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238 | height = rsvg_css_parse_length ((char *)atts[i + 1], ctx->dpi, &percent, &em, &ex); |
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239 | else if (!strcmp ((char *)atts[i], "x")) |
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240 | x = rsvg_css_parse_length ((char *)atts[i + 1], ctx->dpi, &percent, &em, &ex); |
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241 | else if (!strcmp ((char *)atts[i], "y")) |
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242 | y = rsvg_css_parse_length ((char *)atts[i + 1], ctx->dpi, &percent, &em, &ex); |
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243 | else if (!strcmp ((char *)atts[i], "viewBox")) |
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244 | { |
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245 | /* todo: viewbox can have whitespace and/or comma but we're only likely to see |
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246 | these 2 combinations */ |
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247 | if (4 == sscanf ((char *)atts[i + 1], " %lf %lf %lf %lf ", &vbox_x, &vbox_y, &vbox_w, &vbox_h) || |
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248 | 4 == sscanf ((char *)atts[i + 1], " %lf , %lf , %lf , %lf ", &vbox_x, &vbox_y, &vbox_w, &vbox_h)) |
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249 | has_vbox = TRUE; |
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250 | } |
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251 | } |
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252 | |
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253 | if (has_vbox && vbox_w > 0. && vbox_h > 0.) |
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254 | { |
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255 | new_width = (int)floor (vbox_w); |
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256 | new_height = (int)floor (vbox_h); |
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257 | |
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258 | /* apply the sizing function on the *original* width and height |
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259 | to acquire our real destination size. we'll scale it against |
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260 | the viewBox's coordinates later */ |
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261 | if (ctx->size_func) |
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262 | (* ctx->size_func) (&width, &height, ctx->user_data); |
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263 | } |
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264 | else |
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265 | { |
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266 | new_width = width; |
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267 | new_height = height; |
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268 | |
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269 | /* apply the sizing function to acquire our new width and height. |
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270 | we'll scale this against the old values later */ |
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271 | if (ctx->size_func) |
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272 | (* ctx->size_func) (&new_width, &new_height, ctx->user_data); |
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273 | } |
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274 | |
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275 | /* set these here because % are relative to viewbox */ |
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276 | ctx->width = new_width; |
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277 | ctx->height = new_height; |
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278 | |
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279 | if (!has_vbox) |
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280 | { |
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281 | x_zoom = (width < 0 || new_width < 0) ? 1 : (double) new_width / width; |
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282 | y_zoom = (height < 0 || new_height < 0) ? 1 : (double) new_height / height; |
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283 | } |
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284 | else |
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285 | { |
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286 | #if 1 |
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287 | x_zoom = (width < 0 || new_width < 0) ? 1 : (double) width / new_width; |
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288 | y_zoom = (height < 0 || new_height < 0) ? 1 : (double) height / new_height; |
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289 | #else |
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290 | x_zoom = (width < 0 || new_width < 0) ? 1 : (double) new_width / width; |
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291 | y_zoom = (height < 0 || new_height < 0) ? 1 : (double) new_height / height; |
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292 | #endif |
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293 | |
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294 | /* reset these so that we get a properly sized SVG and not a huge one */ |
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295 | new_width = (width == -1 ? new_width : width); |
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296 | new_height = (height == -1 ? new_height : height); |
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297 | } |
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298 | |
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299 | /* Scale size of target pixbuf */ |
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300 | state = &ctx->state[ctx->n_state - 1]; |
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301 | art_affine_scale (state->affine, x_zoom, y_zoom); |
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302 | |
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303 | #if 0 |
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304 | if (vbox_x != 0. || vbox_y != 0.) |
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305 | { |
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306 | double affine[6]; |
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307 | art_affine_translate (affine, vbox_x, vbox_y); |
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308 | art_affine_multiply (state->affine, affine, state->affine); |
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309 | } |
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310 | #endif |
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311 | |
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312 | if (new_width < 0 || new_height < 0) |
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313 | { |
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314 | g_warning ("rsvg_start_svg: width and height not specified in the SVG, nor supplied by the size callback"); |
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315 | if (new_width < 0) new_width = 500; |
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316 | if (new_height < 0) new_height = 500; |
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317 | } |
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318 | |
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319 | if (new_width >= INT_MAX / 4) |
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320 | { |
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321 | /* FIXME: GError here? */ |
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322 | g_warning ("rsvg_start_svg: width too large"); |
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323 | return; |
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324 | } |
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325 | rowstride = (new_width * (has_alpha ? 4 : 3) + 3) & ~3; |
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326 | if (rowstride > INT_MAX / new_height) |
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327 | { |
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328 | /* FIXME: GError here? */ |
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329 | g_warning ("rsvg_start_svg: width too large"); |
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330 | return; |
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331 | } |
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332 | |
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333 | /* FIXME: Add GError here if size is too big. */ |
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334 | |
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335 | pixels = g_try_malloc (rowstride * new_height); |
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336 | if (pixels == NULL) |
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337 | { |
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338 | /* FIXME: GError here? */ |
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339 | g_warning ("rsvg_start_svg: dimensions too large"); |
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340 | return; |
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341 | } |
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342 | memset (pixels, has_alpha ? 0 : 255, rowstride * new_height); |
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343 | ctx->pixbuf = gdk_pixbuf_new_from_data (pixels, |
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344 | GDK_COLORSPACE_RGB, |
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345 | has_alpha, 8, |
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346 | new_width, new_height, |
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347 | rowstride, |
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348 | rsvg_pixmap_destroy, |
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349 | NULL); |
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350 | } |
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351 | } |
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352 | |
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353 | /* Parse a CSS2 style argument, setting the SVG context attributes. */ |
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354 | static void |
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355 | rsvg_parse_style_arg (RsvgHandle *ctx, RsvgState *state, const char *str) |
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356 | { |
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357 | int arg_off; |
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358 | |
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359 | arg_off = rsvg_css_param_arg_offset (str); |
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360 | if (rsvg_css_param_match (str, "opacity")) |
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361 | { |
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362 | state->opacity = rsvg_css_parse_opacity (str + arg_off); |
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363 | } |
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364 | else if (rsvg_css_param_match (str, "fill")) |
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365 | { |
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366 | rsvg_paint_server_unref (state->fill); |
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367 | state->fill = rsvg_paint_server_parse (ctx->defs, str + arg_off); |
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368 | } |
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369 | else if (rsvg_css_param_match (str, "fill-opacity")) |
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370 | { |
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371 | state->fill_opacity = rsvg_css_parse_opacity (str + arg_off); |
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372 | } |
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373 | else if (rsvg_css_param_match (str, "stroke")) |
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374 | { |
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375 | rsvg_paint_server_unref (state->stroke); |
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376 | state->stroke = rsvg_paint_server_parse (ctx->defs, str + arg_off); |
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377 | } |
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378 | else if (rsvg_css_param_match (str, "stroke-width")) |
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379 | { |
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380 | state->stroke_width = rsvg_css_parse_normalized_length (str + arg_off, ctx->dpi, |
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381 | (gdouble)ctx->height, state->font_size, 0.); |
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382 | } |
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383 | else if (rsvg_css_param_match (str, "stroke-linecap")) |
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384 | { |
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385 | if (!strcmp (str + arg_off, "butt")) |
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386 | state->cap = ART_PATH_STROKE_CAP_BUTT; |
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387 | else if (!strcmp (str + arg_off, "round")) |
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388 | state->cap = ART_PATH_STROKE_CAP_ROUND; |
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389 | else if (!strcmp (str + arg_off, "square")) |
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390 | state->cap = ART_PATH_STROKE_CAP_SQUARE; |
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391 | else |
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392 | g_warning ("unknown line cap style %s", str + arg_off); |
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393 | } |
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394 | else if (rsvg_css_param_match (str, "stroke-opacity")) |
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395 | { |
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396 | state->stroke_opacity = rsvg_css_parse_opacity (str + arg_off); |
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397 | } |
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398 | else if (rsvg_css_param_match (str, "stroke-linejoin")) |
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399 | { |
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400 | if (!strcmp (str + arg_off, "miter")) |
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401 | state->join = ART_PATH_STROKE_JOIN_MITER; |
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402 | else if (!strcmp (str + arg_off, "round")) |
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403 | state->join = ART_PATH_STROKE_JOIN_ROUND; |
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404 | else if (!strcmp (str + arg_off, "bevel")) |
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405 | state->join = ART_PATH_STROKE_JOIN_BEVEL; |
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406 | else |
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407 | g_warning ("unknown line join style %s", str + arg_off); |
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408 | } |
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409 | else if (rsvg_css_param_match (str, "font-size")) |
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410 | { |
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411 | state->font_size = rsvg_css_parse_normalized_length (str + arg_off, ctx->dpi, |
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412 | (gdouble)ctx->height, state->font_size, 0.); |
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413 | } |
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414 | else if (rsvg_css_param_match (str, "font-family")) |
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415 | { |
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416 | g_free (state->font_family); |
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417 | state->font_family = g_strdup (str + arg_off); |
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418 | } |
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419 | else if (rsvg_css_param_match (str, "stop-color")) |
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420 | { |
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421 | state->stop_color = rsvg_css_parse_color (str + arg_off); |
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422 | } |
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423 | else if (rsvg_css_param_match (str, "stop-opacity")) |
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424 | { |
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425 | state->stop_opacity = rsvg_css_parse_opacity (str + arg_off); |
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426 | } |
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427 | else if (rsvg_css_param_match (str, "stroke-miterlimit")) |
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428 | { |
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429 | state->miter_limit = g_ascii_strtod (str + arg_off, NULL); |
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430 | } |
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431 | else if (rsvg_css_param_match (str, "stroke-dashoffset")) |
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432 | { |
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433 | state->dash.offset = rsvg_css_parse_normalized_length (str + arg_off, ctx->dpi, |
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434 | rsvg_viewport_percentage((gdouble)ctx->width, (gdouble)ctx->height), state->font_size, 0.); |
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435 | if (state->dash.offset < 0.) |
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436 | state->dash.offset = 0.; |
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437 | } |
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438 | else if (rsvg_css_param_match (str, "stroke-dasharray")) |
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439 | { |
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440 | if(!strcmp(str + arg_off, "none")) |
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441 | { |
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442 | if (state->dash.n_dash != 0) |
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443 | { |
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444 | /* free any cloned dash data */ |
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445 | g_free (state->dash.dash); |
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446 | state->dash.n_dash = 0; |
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447 | } |
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448 | } |
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449 | else |
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450 | { |
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451 | gchar ** dashes = g_strsplit (str + arg_off, ",", -1); |
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452 | if (NULL != dashes) |
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453 | { |
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454 | gint n_dashes, i; |
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455 | gboolean is_even = FALSE ; |
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456 | |
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457 | /* count the #dashes */ |
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458 | for (n_dashes = 0; dashes[n_dashes] != NULL; n_dashes++) |
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459 | ; |
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460 | |
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461 | is_even = (n_dashes % 2 == 0); |
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462 | state->dash.n_dash = (is_even ? n_dashes : n_dashes * 2); |
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463 | state->dash.dash = g_new (double, state->dash.n_dash); |
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464 | |
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465 | /* TODO: handle negative value == error case */ |
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466 | |
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467 | /* the even and base case */ |
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468 | for (i = 0; i < n_dashes; i++) |
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469 | state->dash.dash[i] = g_ascii_strtod (dashes[i], NULL); |
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470 | |
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471 | /* if an odd number of dashes is found, it gets repeated */ |
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472 | if (!is_even) |
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473 | for (; i < state->dash.n_dash; i++) |
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474 | state->dash.dash[i] = g_ascii_strtod (dashes[i - n_dashes], NULL); |
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475 | |
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476 | g_strfreev (dashes) ; |
---|
477 | } |
---|
478 | } |
---|
479 | } |
---|
480 | } |
---|
481 | |
---|
482 | /* tell whether @str is a supported style argument |
---|
483 | whenever something gets added to parse_arg, please |
---|
484 | remember to add it here too |
---|
485 | */ |
---|
486 | static gboolean |
---|
487 | rsvg_is_style_arg(const char *str) |
---|
488 | { |
---|
489 | static GHashTable *styles = NULL; |
---|
490 | if (!styles) |
---|
491 | { |
---|
492 | styles = g_hash_table_new (g_str_hash, g_str_equal); |
---|
493 | |
---|
494 | g_hash_table_insert (styles, "fill", GINT_TO_POINTER (TRUE)); |
---|
495 | g_hash_table_insert (styles, "fill-opacity", GINT_TO_POINTER (TRUE)); |
---|
496 | g_hash_table_insert (styles, "font-family", GINT_TO_POINTER (TRUE)); |
---|
497 | g_hash_table_insert (styles, "font-size", GINT_TO_POINTER (TRUE)); |
---|
498 | g_hash_table_insert (styles, "opacity", GINT_TO_POINTER (TRUE)); |
---|
499 | g_hash_table_insert (styles, "stop-color", GINT_TO_POINTER (TRUE)); |
---|
500 | g_hash_table_insert (styles, "stop-opacity", GINT_TO_POINTER (TRUE)); |
---|
501 | g_hash_table_insert (styles, "stroke", GINT_TO_POINTER (TRUE)); |
---|
502 | g_hash_table_insert (styles, "stroke-dasharray", GINT_TO_POINTER (TRUE)); |
---|
503 | g_hash_table_insert (styles, "stroke-dashoffset", GINT_TO_POINTER (TRUE)); |
---|
504 | g_hash_table_insert (styles, "stroke-linecap", GINT_TO_POINTER (TRUE)); |
---|
505 | g_hash_table_insert (styles, "stroke-linejoin", GINT_TO_POINTER (TRUE)); |
---|
506 | g_hash_table_insert (styles, "stroke-miterlimit", GINT_TO_POINTER (TRUE)); |
---|
507 | g_hash_table_insert (styles, "stroke-opacity", GINT_TO_POINTER (TRUE)); |
---|
508 | g_hash_table_insert (styles, "stroke-width", GINT_TO_POINTER (TRUE)); |
---|
509 | } |
---|
510 | |
---|
511 | /* this will default to 0 (FALSE) on a failed lookup */ |
---|
512 | return GPOINTER_TO_INT (g_hash_table_lookup (styles, str)); |
---|
513 | } |
---|
514 | |
---|
515 | /* take a pair of the form (fill="#ff00ff") and parse it as a style */ |
---|
516 | static void |
---|
517 | rsvg_parse_style_pair (RsvgHandle *ctx, RsvgState *state, |
---|
518 | const char *key, const char *val) |
---|
519 | { |
---|
520 | gchar * str = g_strdup_printf ("%s:%s", key, val); |
---|
521 | rsvg_parse_style_arg (ctx, state, str); |
---|
522 | g_free (str); |
---|
523 | } |
---|
524 | |
---|
525 | /* Split a CSS2 style into individual style arguments, setting attributes |
---|
526 | in the SVG context. |
---|
527 | |
---|
528 | It's known that this is _way_ out of spec. A more complete CSS2 |
---|
529 | implementation will happen later. |
---|
530 | */ |
---|
531 | static void |
---|
532 | rsvg_parse_style (RsvgHandle *ctx, RsvgState *state, const char *str) |
---|
533 | { |
---|
534 | int start, end; |
---|
535 | char *arg; |
---|
536 | |
---|
537 | start = 0; |
---|
538 | while (str[start] != '\0') |
---|
539 | { |
---|
540 | for (end = start; str[end] != '\0' && str[end] != ';'; end++); |
---|
541 | arg = g_new (char, 1 + end - start); |
---|
542 | memcpy (arg, str + start, end - start); |
---|
543 | arg[end - start] = '\0'; |
---|
544 | rsvg_parse_style_arg (ctx, state, arg); |
---|
545 | g_free (arg); |
---|
546 | start = end; |
---|
547 | if (str[start] == ';') start++; |
---|
548 | while (str[start] == ' ') start++; |
---|
549 | } |
---|
550 | } |
---|
551 | |
---|
552 | /* |
---|
553 | * Extremely poor man's CSS parser. Not robust. Not compliant. |
---|
554 | * Should work well enough for our needs ;-) |
---|
555 | */ |
---|
556 | static void |
---|
557 | rsvg_parse_cssbuffer (RsvgHandle *ctx, const char * buff, size_t buflen) |
---|
558 | { |
---|
559 | size_t loc = 0; |
---|
560 | |
---|
561 | while (loc < buflen) |
---|
562 | { |
---|
563 | GString * style_name = g_string_new (NULL); |
---|
564 | GString * style_props = g_string_new (NULL); |
---|
565 | |
---|
566 | /* advance to the style's name */ |
---|
567 | while (loc < buflen && g_ascii_isspace (buff[loc])) |
---|
568 | loc++; |
---|
569 | |
---|
570 | while (loc < buflen && !g_ascii_isspace (buff[loc])) |
---|
571 | g_string_append_c (style_name, buff[loc++]); |
---|
572 | |
---|
573 | /* advance to the first { that defines the style's properties */ |
---|
574 | while (loc < buflen && buff[loc++] != '{' ) |
---|
575 | ; |
---|
576 | |
---|
577 | while (loc < buflen && g_ascii_isspace (buff[loc])) |
---|
578 | loc++; |
---|
579 | |
---|
580 | while (buff[loc] != '}') |
---|
581 | { |
---|
582 | /* suck in and append our property */ |
---|
583 | while (loc < buflen && buff[loc] != ';' && buff[loc] != '}' ) |
---|
584 | g_string_append_c (style_props, buff[loc++]); |
---|
585 | |
---|
586 | if (buff[loc] == '}') |
---|
587 | break; |
---|
588 | else |
---|
589 | { |
---|
590 | g_string_append_c (style_props, ';'); |
---|
591 | |
---|
592 | /* advance to the next property */ |
---|
593 | loc++; |
---|
594 | while (g_ascii_isspace (buff[loc]) && loc < buflen) |
---|
595 | loc++; |
---|
596 | } |
---|
597 | } |
---|
598 | |
---|
599 | /* push name/style pair into HT */ |
---|
600 | g_hash_table_insert (ctx->css_props, style_name->str, style_props->str); |
---|
601 | |
---|
602 | g_string_free (style_name, FALSE); |
---|
603 | g_string_free (style_props, FALSE); |
---|
604 | |
---|
605 | loc++; |
---|
606 | while (g_ascii_isspace (buff[loc]) && loc < buflen) |
---|
607 | loc++; |
---|
608 | } |
---|
609 | } |
---|
610 | |
---|
611 | /* Parse an SVG transform string into an affine matrix. Reference: SVG |
---|
612 | working draft dated 1999-07-06, section 8.5. Return TRUE on |
---|
613 | success. */ |
---|
614 | static gboolean |
---|
615 | rsvg_parse_transform (double dst[6], const char *src) |
---|
616 | { |
---|
617 | int idx; |
---|
618 | char keyword[32]; |
---|
619 | double args[6]; |
---|
620 | int n_args; |
---|
621 | guint key_len; |
---|
622 | double tmp_affine[6]; |
---|
623 | |
---|
624 | art_affine_identity (dst); |
---|
625 | |
---|
626 | idx = 0; |
---|
627 | while (src[idx]) |
---|
628 | { |
---|
629 | /* skip initial whitespace */ |
---|
630 | while (g_ascii_isspace (src[idx])) |
---|
631 | idx++; |
---|
632 | |
---|
633 | /* parse keyword */ |
---|
634 | for (key_len = 0; key_len < sizeof (keyword); key_len++) |
---|
635 | { |
---|
636 | char c; |
---|
637 | |
---|
638 | c = src[idx]; |
---|
639 | if (g_ascii_isalpha (c) || c == '-') |
---|
640 | keyword[key_len] = src[idx++]; |
---|
641 | else |
---|
642 | break; |
---|
643 | } |
---|
644 | if (key_len >= sizeof (keyword)) |
---|
645 | return FALSE; |
---|
646 | keyword[key_len] = '\0'; |
---|
647 | |
---|
648 | /* skip whitespace */ |
---|
649 | while (g_ascii_isspace (src[idx])) |
---|
650 | idx++; |
---|
651 | |
---|
652 | if (src[idx] != '(') |
---|
653 | return FALSE; |
---|
654 | idx++; |
---|
655 | |
---|
656 | for (n_args = 0; ; n_args++) |
---|
657 | { |
---|
658 | char c; |
---|
659 | char *end_ptr; |
---|
660 | |
---|
661 | /* skip whitespace */ |
---|
662 | while (g_ascii_isspace (src[idx])) |
---|
663 | idx++; |
---|
664 | c = src[idx]; |
---|
665 | if (g_ascii_isdigit (c) || c == '+' || c == '-' || c == '.') |
---|
666 | { |
---|
667 | if (n_args == sizeof(args) / sizeof(args[0])) |
---|
668 | return FALSE; /* too many args */ |
---|
669 | args[n_args] = g_ascii_strtod (src + idx, &end_ptr); |
---|
670 | idx = end_ptr - src; |
---|
671 | |
---|
672 | while (g_ascii_isspace (src[idx])) |
---|
673 | idx++; |
---|
674 | |
---|
675 | /* skip optional comma */ |
---|
676 | if (src[idx] == ',') |
---|
677 | idx++; |
---|
678 | } |
---|
679 | else if (c == ')') |
---|
680 | break; |
---|
681 | else |
---|
682 | return FALSE; |
---|
683 | } |
---|
684 | idx++; |
---|
685 | |
---|
686 | /* ok, have parsed keyword and args, now modify the transform */ |
---|
687 | if (!strcmp (keyword, "matrix")) |
---|
688 | { |
---|
689 | if (n_args != 6) |
---|
690 | return FALSE; |
---|
691 | art_affine_multiply (dst, args, dst); |
---|
692 | } |
---|
693 | else if (!strcmp (keyword, "translate")) |
---|
694 | { |
---|
695 | if (n_args == 1) |
---|
696 | args[1] = 0; |
---|
697 | else if (n_args != 2) |
---|
698 | return FALSE; |
---|
699 | art_affine_translate (tmp_affine, args[0], args[1]); |
---|
700 | art_affine_multiply (dst, tmp_affine, dst); |
---|
701 | } |
---|
702 | else if (!strcmp (keyword, "scale")) |
---|
703 | { |
---|
704 | if (n_args == 1) |
---|
705 | args[1] = args[0]; |
---|
706 | else if (n_args != 2) |
---|
707 | return FALSE; |
---|
708 | art_affine_scale (tmp_affine, args[0], args[1]); |
---|
709 | art_affine_multiply (dst, tmp_affine, dst); |
---|
710 | } |
---|
711 | else if (!strcmp (keyword, "rotate")) |
---|
712 | { |
---|
713 | if (n_args != 1) |
---|
714 | return FALSE; |
---|
715 | art_affine_rotate (tmp_affine, args[0]); |
---|
716 | art_affine_multiply (dst, tmp_affine, dst); |
---|
717 | } |
---|
718 | else if (!strcmp (keyword, "skewX")) |
---|
719 | { |
---|
720 | if (n_args != 1) |
---|
721 | return FALSE; |
---|
722 | art_affine_shear (tmp_affine, args[0]); |
---|
723 | art_affine_multiply (dst, tmp_affine, dst); |
---|
724 | } |
---|
725 | else if (!strcmp (keyword, "skewY")) |
---|
726 | { |
---|
727 | if (n_args != 1) |
---|
728 | return FALSE; |
---|
729 | art_affine_shear (tmp_affine, args[0]); |
---|
730 | /* transpose the affine, given that we know [1] is zero */ |
---|
731 | tmp_affine[1] = tmp_affine[2]; |
---|
732 | tmp_affine[2] = 0; |
---|
733 | art_affine_multiply (dst, tmp_affine, dst); |
---|
734 | } |
---|
735 | else |
---|
736 | return FALSE; /* unknown keyword */ |
---|
737 | } |
---|
738 | return TRUE; |
---|
739 | } |
---|
740 | |
---|
741 | /** |
---|
742 | * rsvg_parse_transform_attr: Parse transform attribute and apply to state. |
---|
743 | * @ctx: Rsvg context. |
---|
744 | * @state: State in which to apply the transform. |
---|
745 | * @str: String containing transform. |
---|
746 | * |
---|
747 | * Parses the transform attribute in @str and applies it to @state. |
---|
748 | **/ |
---|
749 | static void |
---|
750 | rsvg_parse_transform_attr (RsvgHandle *ctx, RsvgState *state, const char *str) |
---|
751 | { |
---|
752 | double affine[6]; |
---|
753 | |
---|
754 | if (rsvg_parse_transform (affine, str)) |
---|
755 | { |
---|
756 | art_affine_multiply (state->affine, affine, state->affine); |
---|
757 | } |
---|
758 | else |
---|
759 | { |
---|
760 | /* parse error for transform attribute. todo: report */ |
---|
761 | } |
---|
762 | } |
---|
763 | |
---|
764 | static gboolean |
---|
765 | rsvg_lookup_apply_css_style (RsvgHandle *ctx, const char * target) |
---|
766 | { |
---|
767 | const char * value = (const char *)g_hash_table_lookup (ctx->css_props, target); |
---|
768 | |
---|
769 | if (value != NULL) |
---|
770 | { |
---|
771 | rsvg_parse_style (ctx, &ctx->state[ctx->n_state - 1], |
---|
772 | value); |
---|
773 | return TRUE; |
---|
774 | } |
---|
775 | return FALSE; |
---|
776 | } |
---|
777 | |
---|
778 | /** |
---|
779 | * rsvg_parse_style_attrs: Parse style attribute. |
---|
780 | * @ctx: Rsvg context. |
---|
781 | * @tag: The SVG tag we're processing (eg: circle, ellipse), optionally %NULL |
---|
782 | * @klazz: The space delimited class list, optionally %NULL |
---|
783 | * @atts: Attributes in SAX style. |
---|
784 | * |
---|
785 | * Parses style and transform attributes and modifies state at top of |
---|
786 | * stack. |
---|
787 | **/ |
---|
788 | static void |
---|
789 | rsvg_parse_style_attrs (RsvgHandle *ctx, |
---|
790 | const char * tag, |
---|
791 | const char * klazz, |
---|
792 | const xmlChar **atts) |
---|
793 | { |
---|
794 | int i = 0, j = 0; |
---|
795 | char * target = NULL; |
---|
796 | gboolean found = FALSE; |
---|
797 | GString * klazz_list = NULL; |
---|
798 | |
---|
799 | if (tag != NULL && klazz != NULL) |
---|
800 | { |
---|
801 | target = g_strdup_printf ("%s.%s", tag, klazz); |
---|
802 | found = rsvg_lookup_apply_css_style (ctx, target); |
---|
803 | g_free (target); |
---|
804 | } |
---|
805 | |
---|
806 | if (found == FALSE) |
---|
807 | { |
---|
808 | if (tag != NULL) |
---|
809 | rsvg_lookup_apply_css_style (ctx, tag); |
---|
810 | |
---|
811 | if (klazz != NULL) |
---|
812 | { |
---|
813 | i = strlen (klazz); |
---|
814 | while (j < i) |
---|
815 | { |
---|
816 | klazz_list = g_string_new ("."); |
---|
817 | |
---|
818 | while (j < i && g_ascii_isspace(klazz[j])) |
---|
819 | j++; |
---|
820 | |
---|
821 | while (j < i && !g_ascii_isspace(klazz[j])) |
---|
822 | g_string_append_c (klazz_list, klazz[j++]); |
---|
823 | |
---|
824 | rsvg_lookup_apply_css_style (ctx, klazz_list->str); |
---|
825 | g_string_free (klazz_list, TRUE); |
---|
826 | } |
---|
827 | } |
---|
828 | } |
---|
829 | |
---|
830 | if (atts != NULL) |
---|
831 | { |
---|
832 | for (i = 0; atts[i] != NULL; i += 2) |
---|
833 | { |
---|
834 | if (!strcmp ((char *)atts[i], "style")) |
---|
835 | rsvg_parse_style (ctx, &ctx->state[ctx->n_state - 1], |
---|
836 | (char *)atts[i + 1]); |
---|
837 | else if (!strcmp ((char *)atts[i], "transform")) |
---|
838 | rsvg_parse_transform_attr (ctx, &ctx->state[ctx->n_state - 1], |
---|
839 | (char *)atts[i + 1]); |
---|
840 | else if (rsvg_is_style_arg ((char *)atts[i])) |
---|
841 | rsvg_parse_style_pair (ctx, &ctx->state[ctx->n_state - 1], |
---|
842 | (char *)atts[i], (char *)atts[i + 1]); |
---|
843 | } |
---|
844 | } |
---|
845 | } |
---|
846 | |
---|
847 | /** |
---|
848 | * rsvg_push_opacity_group: Begin a new transparency group. |
---|
849 | * @ctx: Context in which to push. |
---|
850 | * |
---|
851 | * Pushes a new transparency group onto the stack. The top of the stack |
---|
852 | * is stored in the context, while the "saved" value is in the state |
---|
853 | * stack. |
---|
854 | **/ |
---|
855 | static void |
---|
856 | rsvg_push_opacity_group (RsvgHandle *ctx) |
---|
857 | { |
---|
858 | RsvgState *state; |
---|
859 | GdkPixbuf *pixbuf; |
---|
860 | art_u8 *pixels; |
---|
861 | int width, height, rowstride; |
---|
862 | |
---|
863 | state = &ctx->state[ctx->n_state - 1]; |
---|
864 | pixbuf = ctx->pixbuf; |
---|
865 | |
---|
866 | state->save_pixbuf = pixbuf; |
---|
867 | |
---|
868 | if (pixbuf == NULL) |
---|
869 | { |
---|
870 | /* FIXME: What warning/GError here? */ |
---|
871 | return; |
---|
872 | } |
---|
873 | |
---|
874 | if (!gdk_pixbuf_get_has_alpha (pixbuf)) |
---|
875 | { |
---|
876 | g_warning ("push/pop transparency group on non-alpha buffer nyi"); |
---|
877 | return; |
---|
878 | } |
---|
879 | |
---|
880 | width = gdk_pixbuf_get_width (pixbuf); |
---|
881 | height = gdk_pixbuf_get_height (pixbuf); |
---|
882 | rowstride = gdk_pixbuf_get_rowstride (pixbuf); |
---|
883 | pixels = g_new (art_u8, rowstride * height); |
---|
884 | memset (pixels, 0, rowstride * height); |
---|
885 | |
---|
886 | pixbuf = gdk_pixbuf_new_from_data (pixels, |
---|
887 | GDK_COLORSPACE_RGB, |
---|
888 | TRUE, |
---|
889 | gdk_pixbuf_get_bits_per_sample (pixbuf), |
---|
890 | width, |
---|
891 | height, |
---|
892 | rowstride, |
---|
893 | rsvg_pixmap_destroy, |
---|
894 | NULL); |
---|
895 | ctx->pixbuf = pixbuf; |
---|
896 | } |
---|
897 | |
---|
898 | /** |
---|
899 | * rsvg_pop_opacity_group: End a transparency group. |
---|
900 | * @ctx: Context in which to push. |
---|
901 | * @opacity: Opacity for blending (0..255). |
---|
902 | * |
---|
903 | * Pops a new transparency group from the stack, recompositing with the |
---|
904 | * next on stack. |
---|
905 | **/ |
---|
906 | static void |
---|
907 | rsvg_pop_opacity_group (RsvgHandle *ctx, int opacity) |
---|
908 | { |
---|
909 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
910 | GdkPixbuf *tos, *nos; |
---|
911 | art_u8 *tos_pixels, *nos_pixels; |
---|
912 | int width; |
---|
913 | int height; |
---|
914 | int rowstride; |
---|
915 | int x, y; |
---|
916 | int tmp; |
---|
917 | |
---|
918 | tos = ctx->pixbuf; |
---|
919 | nos = state->save_pixbuf; |
---|
920 | |
---|
921 | if (tos == NULL || nos == NULL) |
---|
922 | { |
---|
923 | /* FIXME: What warning/GError here? */ |
---|
924 | return; |
---|
925 | } |
---|
926 | |
---|
927 | if (!gdk_pixbuf_get_has_alpha (nos)) |
---|
928 | { |
---|
929 | g_warning ("push/pop transparency group on non-alpha buffer nyi"); |
---|
930 | return; |
---|
931 | } |
---|
932 | |
---|
933 | width = gdk_pixbuf_get_width (tos); |
---|
934 | height = gdk_pixbuf_get_height (tos); |
---|
935 | rowstride = gdk_pixbuf_get_rowstride (tos); |
---|
936 | |
---|
937 | tos_pixels = gdk_pixbuf_get_pixels (tos); |
---|
938 | nos_pixels = gdk_pixbuf_get_pixels (nos); |
---|
939 | |
---|
940 | for (y = 0; y < height; y++) |
---|
941 | { |
---|
942 | for (x = 0; x < width; x++) |
---|
943 | { |
---|
944 | art_u8 r, g, b, a; |
---|
945 | a = tos_pixels[4 * x + 3]; |
---|
946 | if (a) |
---|
947 | { |
---|
948 | r = tos_pixels[4 * x]; |
---|
949 | g = tos_pixels[4 * x + 1]; |
---|
950 | b = tos_pixels[4 * x + 2]; |
---|
951 | tmp = a * opacity + 0x80; |
---|
952 | a = (tmp + (tmp >> 8)) >> 8; |
---|
953 | art_rgba_run_alpha (nos_pixels + 4 * x, r, g, b, a, 1); |
---|
954 | } |
---|
955 | } |
---|
956 | tos_pixels += rowstride; |
---|
957 | nos_pixels += rowstride; |
---|
958 | } |
---|
959 | |
---|
960 | g_object_unref (tos); |
---|
961 | ctx->pixbuf = nos; |
---|
962 | } |
---|
963 | |
---|
964 | static void |
---|
965 | rsvg_start_g (RsvgHandle *ctx, const xmlChar **atts) |
---|
966 | { |
---|
967 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
968 | const char * klazz = NULL; |
---|
969 | int i; |
---|
970 | |
---|
971 | if (atts != NULL) |
---|
972 | { |
---|
973 | for (i = 0; atts[i] != NULL; i += 2) |
---|
974 | { |
---|
975 | if (!strcmp ((char *)atts[i], "class")) |
---|
976 | klazz = (const char *)atts[i + 1]; |
---|
977 | } |
---|
978 | } |
---|
979 | |
---|
980 | rsvg_parse_style_attrs (ctx, "g", klazz, atts); |
---|
981 | if (state->opacity != 0xff) |
---|
982 | rsvg_push_opacity_group (ctx); |
---|
983 | } |
---|
984 | |
---|
985 | static void |
---|
986 | rsvg_end_g (RsvgHandle *ctx) |
---|
987 | { |
---|
988 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
989 | |
---|
990 | if (state->opacity != 0xff) |
---|
991 | rsvg_pop_opacity_group (ctx, state->opacity); |
---|
992 | } |
---|
993 | |
---|
994 | /** |
---|
995 | * rsvg_close_vpath: Close a vector path. |
---|
996 | * @src: Source vector path. |
---|
997 | * |
---|
998 | * Closes any open subpaths in the vector path. |
---|
999 | * |
---|
1000 | * Return value: Closed vector path, allocated with g_new. |
---|
1001 | **/ |
---|
1002 | static ArtVpath * |
---|
1003 | rsvg_close_vpath (const ArtVpath *src) |
---|
1004 | { |
---|
1005 | ArtVpath *result; |
---|
1006 | int n_result, n_result_max; |
---|
1007 | int src_ix; |
---|
1008 | double beg_x, beg_y; |
---|
1009 | gboolean open; |
---|
1010 | |
---|
1011 | n_result = 0; |
---|
1012 | n_result_max = 16; |
---|
1013 | result = g_new (ArtVpath, n_result_max); |
---|
1014 | |
---|
1015 | beg_x = 0; |
---|
1016 | beg_y = 0; |
---|
1017 | open = FALSE; |
---|
1018 | |
---|
1019 | for (src_ix = 0; src[src_ix].code != ART_END; src_ix++) |
---|
1020 | { |
---|
1021 | if (n_result == n_result_max) |
---|
1022 | result = g_renew (ArtVpath, result, n_result_max <<= 1); |
---|
1023 | result[n_result].code = src[src_ix].code == ART_MOVETO_OPEN ? |
---|
1024 | ART_MOVETO : src[src_ix].code; |
---|
1025 | result[n_result].x = src[src_ix].x; |
---|
1026 | result[n_result].y = src[src_ix].y; |
---|
1027 | n_result++; |
---|
1028 | if (src[src_ix].code == ART_MOVETO_OPEN) |
---|
1029 | { |
---|
1030 | beg_x = src[src_ix].x; |
---|
1031 | beg_y = src[src_ix].y; |
---|
1032 | open = TRUE; |
---|
1033 | } |
---|
1034 | else if (src[src_ix + 1].code != ART_LINETO) |
---|
1035 | { |
---|
1036 | if (open && (beg_x != src[src_ix].x || beg_y != src[src_ix].y)) |
---|
1037 | { |
---|
1038 | if (n_result == n_result_max) |
---|
1039 | result = g_renew (ArtVpath, result, n_result_max <<= 1); |
---|
1040 | result[n_result].code = ART_LINETO; |
---|
1041 | result[n_result].x = beg_x; |
---|
1042 | result[n_result].y = beg_y; |
---|
1043 | n_result++; |
---|
1044 | } |
---|
1045 | open = FALSE; |
---|
1046 | } |
---|
1047 | } |
---|
1048 | if (n_result == n_result_max) |
---|
1049 | result = g_renew (ArtVpath, result, n_result_max <<= 1); |
---|
1050 | result[n_result].code = ART_END; |
---|
1051 | result[n_result].x = 0.0; |
---|
1052 | result[n_result].y = 0.0; |
---|
1053 | return result; |
---|
1054 | } |
---|
1055 | |
---|
1056 | /** |
---|
1057 | * rsvg_render_svp: Render an SVP. |
---|
1058 | * @ctx: Context in which to render. |
---|
1059 | * @svp: SVP to render. |
---|
1060 | * @ps: Paint server for rendering. |
---|
1061 | * @opacity: Opacity as 0..0xff. |
---|
1062 | * |
---|
1063 | * Renders the SVP over the pixbuf in @ctx. |
---|
1064 | **/ |
---|
1065 | static void |
---|
1066 | rsvg_render_svp (RsvgHandle *ctx, const ArtSVP *svp, |
---|
1067 | RsvgPaintServer *ps, int opacity) |
---|
1068 | { |
---|
1069 | GdkPixbuf *pixbuf; |
---|
1070 | ArtRender *render; |
---|
1071 | gboolean has_alpha; |
---|
1072 | |
---|
1073 | pixbuf = ctx->pixbuf; |
---|
1074 | if (pixbuf == NULL) |
---|
1075 | { |
---|
1076 | /* FIXME: What warning/GError here? */ |
---|
1077 | return; |
---|
1078 | } |
---|
1079 | |
---|
1080 | has_alpha = gdk_pixbuf_get_has_alpha (pixbuf); |
---|
1081 | |
---|
1082 | render = art_render_new (0, 0, |
---|
1083 | gdk_pixbuf_get_width (pixbuf), |
---|
1084 | gdk_pixbuf_get_height (pixbuf), |
---|
1085 | gdk_pixbuf_get_pixels (pixbuf), |
---|
1086 | gdk_pixbuf_get_rowstride (pixbuf), |
---|
1087 | gdk_pixbuf_get_n_channels (pixbuf) - |
---|
1088 | (has_alpha ? 1 : 0), |
---|
1089 | gdk_pixbuf_get_bits_per_sample (pixbuf), |
---|
1090 | has_alpha ? ART_ALPHA_SEPARATE : ART_ALPHA_NONE, |
---|
1091 | NULL); |
---|
1092 | |
---|
1093 | art_render_svp (render, svp); |
---|
1094 | art_render_mask_solid (render, (opacity << 8) + opacity + (opacity >> 7)); |
---|
1095 | rsvg_render_paint_server (render, ps, NULL); /* todo: paint server ctx */ |
---|
1096 | art_render_invoke (render); |
---|
1097 | } |
---|
1098 | |
---|
1099 | static void |
---|
1100 | rsvg_render_bpath (RsvgHandle *ctx, const ArtBpath *bpath) |
---|
1101 | { |
---|
1102 | RsvgState *state; |
---|
1103 | ArtBpath *affine_bpath; |
---|
1104 | ArtVpath *vpath; |
---|
1105 | ArtSVP *svp; |
---|
1106 | GdkPixbuf *pixbuf; |
---|
1107 | gboolean need_tmpbuf; |
---|
1108 | int opacity; |
---|
1109 | int tmp; |
---|
1110 | |
---|
1111 | pixbuf = ctx->pixbuf; |
---|
1112 | if (pixbuf == NULL) |
---|
1113 | { |
---|
1114 | /* FIXME: What warning/GError here? */ |
---|
1115 | return; |
---|
1116 | } |
---|
1117 | |
---|
1118 | state = &ctx->state[ctx->n_state - 1]; |
---|
1119 | affine_bpath = art_bpath_affine_transform (bpath, |
---|
1120 | state->affine); |
---|
1121 | |
---|
1122 | vpath = art_bez_path_to_vec (affine_bpath, 0.25); |
---|
1123 | art_free (affine_bpath); |
---|
1124 | |
---|
1125 | need_tmpbuf = (state->fill != NULL) && (state->stroke != NULL) && |
---|
1126 | state->opacity != 0xff; |
---|
1127 | |
---|
1128 | if (need_tmpbuf) |
---|
1129 | rsvg_push_opacity_group (ctx); |
---|
1130 | |
---|
1131 | if (state->fill != NULL) |
---|
1132 | { |
---|
1133 | ArtVpath *closed_vpath; |
---|
1134 | ArtSVP *svp2; |
---|
1135 | ArtSvpWriter *swr; |
---|
1136 | |
---|
1137 | closed_vpath = rsvg_close_vpath (vpath); |
---|
1138 | svp = art_svp_from_vpath (closed_vpath); |
---|
1139 | g_free (closed_vpath); |
---|
1140 | |
---|
1141 | swr = art_svp_writer_rewind_new (ART_WIND_RULE_NONZERO); |
---|
1142 | art_svp_intersector (svp, swr); |
---|
1143 | |
---|
1144 | svp2 = art_svp_writer_rewind_reap (swr); |
---|
1145 | art_svp_free (svp); |
---|
1146 | |
---|
1147 | opacity = state->fill_opacity; |
---|
1148 | if (!need_tmpbuf && state->opacity != 0xff) |
---|
1149 | { |
---|
1150 | tmp = opacity * state->opacity + 0x80; |
---|
1151 | opacity = (tmp + (tmp >> 8)) >> 8; |
---|
1152 | } |
---|
1153 | rsvg_render_svp (ctx, svp2, state->fill, opacity); |
---|
1154 | art_svp_free (svp2); |
---|
1155 | } |
---|
1156 | |
---|
1157 | if (state->stroke != NULL) |
---|
1158 | { |
---|
1159 | /* todo: libart doesn't yet implement anamorphic scaling of strokes */ |
---|
1160 | double stroke_width = state->stroke_width * |
---|
1161 | art_affine_expansion (state->affine); |
---|
1162 | |
---|
1163 | if (stroke_width < 0.25) |
---|
1164 | stroke_width = 0.25; |
---|
1165 | |
---|
1166 | /* if the path is dashed, stroke it */ |
---|
1167 | if (state->dash.n_dash > 0) |
---|
1168 | { |
---|
1169 | ArtVpath * dashed_vpath = art_vpath_dash (vpath, &state->dash); |
---|
1170 | art_free (vpath); |
---|
1171 | vpath = dashed_vpath; |
---|
1172 | } |
---|
1173 | |
---|
1174 | svp = art_svp_vpath_stroke (vpath, state->join, state->cap, |
---|
1175 | stroke_width, state->miter_limit, 0.25); |
---|
1176 | opacity = state->stroke_opacity; |
---|
1177 | if (!need_tmpbuf && state->opacity != 0xff) |
---|
1178 | { |
---|
1179 | tmp = opacity * state->opacity + 0x80; |
---|
1180 | opacity = (tmp + (tmp >> 8)) >> 8; |
---|
1181 | } |
---|
1182 | rsvg_render_svp (ctx, svp, state->stroke, opacity); |
---|
1183 | art_svp_free (svp); |
---|
1184 | } |
---|
1185 | |
---|
1186 | if (need_tmpbuf) |
---|
1187 | rsvg_pop_opacity_group (ctx, state->opacity); |
---|
1188 | |
---|
1189 | art_free (vpath); |
---|
1190 | } |
---|
1191 | |
---|
1192 | static void |
---|
1193 | rsvg_render_path(RsvgHandle *ctx, const char *d) |
---|
1194 | { |
---|
1195 | RsvgBpathDef *bpath_def; |
---|
1196 | |
---|
1197 | bpath_def = rsvg_parse_path (d); |
---|
1198 | rsvg_bpath_def_art_finish (bpath_def); |
---|
1199 | |
---|
1200 | rsvg_render_bpath (ctx, bpath_def->bpath); |
---|
1201 | |
---|
1202 | rsvg_bpath_def_free (bpath_def); |
---|
1203 | } |
---|
1204 | |
---|
1205 | static void |
---|
1206 | rsvg_start_path (RsvgHandle *ctx, const xmlChar **atts) |
---|
1207 | { |
---|
1208 | int i; |
---|
1209 | char *d = NULL; |
---|
1210 | const char * klazz = NULL; |
---|
1211 | |
---|
1212 | if (atts != NULL) |
---|
1213 | { |
---|
1214 | for (i = 0; atts[i] != NULL; i += 2) |
---|
1215 | { |
---|
1216 | if (!strcmp ((char *)atts[i], "d")) |
---|
1217 | d = (char *)atts[i + 1]; |
---|
1218 | else if (!strcmp ((char *)atts[i], "class")) |
---|
1219 | klazz = (char *)atts[i + 1]; |
---|
1220 | } |
---|
1221 | } |
---|
1222 | |
---|
1223 | if (d == NULL) |
---|
1224 | return; |
---|
1225 | |
---|
1226 | rsvg_parse_style_attrs (ctx, "path", klazz, atts); |
---|
1227 | rsvg_render_path (ctx, d); |
---|
1228 | } |
---|
1229 | |
---|
1230 | /* begin text - this should likely get split into its own .c file */ |
---|
1231 | |
---|
1232 | static char * |
---|
1233 | make_valid_utf8 (const char *str) |
---|
1234 | { |
---|
1235 | GString *string; |
---|
1236 | const char *remainder, *invalid; |
---|
1237 | int remaining_bytes, valid_bytes; |
---|
1238 | |
---|
1239 | string = NULL; |
---|
1240 | remainder = str; |
---|
1241 | remaining_bytes = strlen (str); |
---|
1242 | |
---|
1243 | while (remaining_bytes != 0) |
---|
1244 | { |
---|
1245 | if (g_utf8_validate (remainder, remaining_bytes, &invalid)) |
---|
1246 | break; |
---|
1247 | valid_bytes = invalid - remainder; |
---|
1248 | |
---|
1249 | if (string == NULL) |
---|
1250 | string = g_string_sized_new (remaining_bytes); |
---|
1251 | |
---|
1252 | g_string_append_len (string, remainder, valid_bytes); |
---|
1253 | g_string_append_c (string, '?'); |
---|
1254 | |
---|
1255 | remaining_bytes -= valid_bytes + 1; |
---|
1256 | remainder = invalid + 1; |
---|
1257 | } |
---|
1258 | |
---|
1259 | if (string == NULL) |
---|
1260 | return g_strdup (str); |
---|
1261 | |
---|
1262 | g_string_append (string, remainder); |
---|
1263 | |
---|
1264 | return g_string_free (string, FALSE); |
---|
1265 | } |
---|
1266 | |
---|
1267 | |
---|
1268 | typedef struct _RsvgSaxHandlerText { |
---|
1269 | RsvgSaxHandler super; |
---|
1270 | RsvgSaxHandler *parent; |
---|
1271 | RsvgHandle *ctx; |
---|
1272 | } RsvgSaxHandlerText; |
---|
1273 | |
---|
1274 | static void |
---|
1275 | rsvg_text_handler_free (RsvgSaxHandler *self) |
---|
1276 | { |
---|
1277 | g_free (self); |
---|
1278 | } |
---|
1279 | |
---|
1280 | static void |
---|
1281 | rsvg_text_handler_characters (RsvgSaxHandler *self, const xmlChar *ch, int len) |
---|
1282 | { |
---|
1283 | RsvgSaxHandlerText *z = (RsvgSaxHandlerText *)self; |
---|
1284 | RsvgHandle *ctx = z->ctx; |
---|
1285 | char *string, *tmp; |
---|
1286 | int beg, end; |
---|
1287 | RsvgState *state; |
---|
1288 | ArtRender *render; |
---|
1289 | GdkPixbuf *pixbuf; |
---|
1290 | gboolean has_alpha; |
---|
1291 | int opacity; |
---|
1292 | PangoLayout *layout; |
---|
1293 | PangoFontDescription *font; |
---|
1294 | PangoLayoutLine *line; |
---|
1295 | PangoRectangle ink_rect, line_ink_rect; |
---|
1296 | FT_Bitmap bitmap; |
---|
1297 | |
---|
1298 | state = &ctx->state[ctx->n_state - 1]; |
---|
1299 | if (state->fill == NULL && state->font_size <= 0) |
---|
1300 | { |
---|
1301 | return; |
---|
1302 | } |
---|
1303 | |
---|
1304 | pixbuf = ctx->pixbuf; |
---|
1305 | if (pixbuf == NULL) |
---|
1306 | { |
---|
1307 | /* FIXME: What warning/GError here? */ |
---|
1308 | return; |
---|
1309 | } |
---|
1310 | |
---|
1311 | /* Copy ch into string, chopping off leading and trailing whitespace */ |
---|
1312 | for (beg = 0; beg < len; beg++) |
---|
1313 | if (!g_ascii_isspace (ch[beg])) |
---|
1314 | break; |
---|
1315 | |
---|
1316 | for (end = len; end > beg; end--) |
---|
1317 | if (!g_ascii_isspace (ch[end - 1])) |
---|
1318 | break; |
---|
1319 | |
---|
1320 | if (end - beg == 0) |
---|
1321 | { |
---|
1322 | /* TODO: be smarter with some "last was space" logic */ |
---|
1323 | end = 1; beg = 0; |
---|
1324 | string = g_strdup (" "); |
---|
1325 | } |
---|
1326 | else |
---|
1327 | { |
---|
1328 | string = g_malloc (end - beg + 1); |
---|
1329 | memcpy (string, ch + beg, end - beg); |
---|
1330 | string[end - beg] = 0; |
---|
1331 | } |
---|
1332 | |
---|
1333 | if (!g_utf8_validate (string, -1, NULL)) |
---|
1334 | { |
---|
1335 | tmp = make_valid_utf8 (string); |
---|
1336 | g_free (string); |
---|
1337 | string = tmp; |
---|
1338 | } |
---|
1339 | |
---|
1340 | if (ctx->pango_context == NULL) |
---|
1341 | ctx->pango_context = pango_ft2_get_context ((guint)ctx->dpi, (guint)ctx->dpi); |
---|
1342 | |
---|
1343 | has_alpha = gdk_pixbuf_get_has_alpha (pixbuf); |
---|
1344 | |
---|
1345 | render = art_render_new (0, 0, |
---|
1346 | gdk_pixbuf_get_width (pixbuf), |
---|
1347 | gdk_pixbuf_get_height (pixbuf), |
---|
1348 | gdk_pixbuf_get_pixels (pixbuf), |
---|
1349 | gdk_pixbuf_get_rowstride (pixbuf), |
---|
1350 | gdk_pixbuf_get_n_channels (pixbuf) - |
---|
1351 | (has_alpha ? 1 : 0), |
---|
1352 | gdk_pixbuf_get_bits_per_sample (pixbuf), |
---|
1353 | has_alpha ? ART_ALPHA_SEPARATE : ART_ALPHA_NONE, |
---|
1354 | NULL); |
---|
1355 | |
---|
1356 | layout = pango_layout_new (ctx->pango_context); |
---|
1357 | pango_layout_set_text (layout, string, end - beg); |
---|
1358 | font = pango_font_description_copy (pango_context_get_font_description (ctx->pango_context)); |
---|
1359 | if (state->font_family) |
---|
1360 | pango_font_description_set_family_static (font, state->font_family); |
---|
1361 | |
---|
1362 | /* we need to resize the font by our X or Y scale (ideally could stretch in both directions...) |
---|
1363 | which, though? Y for now */ |
---|
1364 | pango_font_description_set_size (font, state->font_size * PANGO_SCALE * state->affine[3]); |
---|
1365 | pango_layout_set_font_description (layout, font); |
---|
1366 | pango_font_description_free (font); |
---|
1367 | |
---|
1368 | pango_layout_get_pixel_extents (layout, &ink_rect, NULL); |
---|
1369 | |
---|
1370 | line = pango_layout_get_line (layout, 0); |
---|
1371 | if (line == NULL) |
---|
1372 | line_ink_rect = ink_rect; /* nothing to draw anyway */ |
---|
1373 | else |
---|
1374 | pango_layout_line_get_pixel_extents (line, &line_ink_rect, NULL); |
---|
1375 | |
---|
1376 | bitmap.rows = ink_rect.height; |
---|
1377 | bitmap.width = ink_rect.width; |
---|
1378 | bitmap.pitch = (bitmap.width + 3) & ~3; |
---|
1379 | bitmap.buffer = g_malloc0 (bitmap.rows * bitmap.pitch); |
---|
1380 | bitmap.num_grays = 0x100; |
---|
1381 | bitmap.pixel_mode = ft_pixel_mode_grays; |
---|
1382 | |
---|
1383 | pango_ft2_render_layout (&bitmap, layout, -ink_rect.x, -ink_rect.y); |
---|
1384 | |
---|
1385 | g_object_unref (layout); |
---|
1386 | |
---|
1387 | rsvg_render_paint_server (render, state->fill, NULL); /* todo: paint server ctx */ |
---|
1388 | opacity = state->fill_opacity * state->opacity; |
---|
1389 | opacity = opacity + (opacity >> 7) + (opacity >> 14); |
---|
1390 | |
---|
1391 | art_render_mask_solid (render, opacity); |
---|
1392 | art_render_mask (render, |
---|
1393 | state->affine[4] + line_ink_rect.x + state->text_offset, |
---|
1394 | state->affine[5] + line_ink_rect.y, |
---|
1395 | state->affine[4] + line_ink_rect.x + bitmap.width + state->text_offset, |
---|
1396 | state->affine[5] + line_ink_rect.y + bitmap.rows, |
---|
1397 | bitmap.buffer, bitmap.pitch); |
---|
1398 | art_render_invoke (render); |
---|
1399 | |
---|
1400 | g_free (bitmap.buffer); |
---|
1401 | g_free (string); |
---|
1402 | |
---|
1403 | state->text_offset += line_ink_rect.width; |
---|
1404 | } |
---|
1405 | |
---|
1406 | static void |
---|
1407 | rsvg_start_tspan (RsvgHandle *ctx, const xmlChar **atts) |
---|
1408 | { |
---|
1409 | int i; |
---|
1410 | double affine[6] ; |
---|
1411 | double x, y, dx, dy; |
---|
1412 | RsvgState *state; |
---|
1413 | const char * klazz = NULL; |
---|
1414 | x = y = dx = dy = 0.; |
---|
1415 | |
---|
1416 | state = &ctx->state[ctx->n_state - 1]; |
---|
1417 | |
---|
1418 | if (atts != NULL) |
---|
1419 | { |
---|
1420 | for (i = 0; atts[i] != NULL; i += 2) |
---|
1421 | { |
---|
1422 | if (!strcmp ((char *)atts[i], "x")) |
---|
1423 | x = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
1424 | else if (!strcmp ((char *)atts[i], "y")) |
---|
1425 | y = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
1426 | else if (!strcmp ((char *)atts[i], "dx")) |
---|
1427 | dx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
1428 | else if (!strcmp ((char *)atts[i], "dy")) |
---|
1429 | dy = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
1430 | else if (!strcmp ((char *)atts[i], "class")) |
---|
1431 | klazz = (const char *)atts[i + 1]; |
---|
1432 | } |
---|
1433 | } |
---|
1434 | |
---|
1435 | /* todo: transform() is illegal here */ |
---|
1436 | x += dx ; |
---|
1437 | y += dy ; |
---|
1438 | |
---|
1439 | if (x > 0 && y > 0) |
---|
1440 | { |
---|
1441 | art_affine_translate (affine, x, y); |
---|
1442 | art_affine_multiply (state->affine, affine, state->affine); |
---|
1443 | } |
---|
1444 | rsvg_parse_style_attrs (ctx, "tspan", klazz, atts); |
---|
1445 | } |
---|
1446 | |
---|
1447 | static void |
---|
1448 | rsvg_text_handler_start (RsvgSaxHandler *self, const xmlChar *name, |
---|
1449 | const xmlChar **atts) |
---|
1450 | { |
---|
1451 | RsvgSaxHandlerText *z = (RsvgSaxHandlerText *)self; |
---|
1452 | RsvgHandle *ctx = z->ctx; |
---|
1453 | |
---|
1454 | /* push the state stack */ |
---|
1455 | if (ctx->n_state == ctx->n_state_max) |
---|
1456 | ctx->state = g_renew (RsvgState, ctx->state, ctx->n_state_max <<= 1); |
---|
1457 | if (ctx->n_state) |
---|
1458 | rsvg_state_clone (&ctx->state[ctx->n_state], |
---|
1459 | &ctx->state[ctx->n_state - 1]); |
---|
1460 | else |
---|
1461 | rsvg_state_init (ctx->state); |
---|
1462 | ctx->n_state++; |
---|
1463 | |
---|
1464 | /* this should be the only thing starting inside of text */ |
---|
1465 | if (!strcmp ((char *)name, "tspan")) |
---|
1466 | rsvg_start_tspan (ctx, atts); |
---|
1467 | } |
---|
1468 | |
---|
1469 | static void |
---|
1470 | rsvg_text_handler_end (RsvgSaxHandler *self, const xmlChar *name) |
---|
1471 | { |
---|
1472 | RsvgSaxHandlerText *z = (RsvgSaxHandlerText *)self; |
---|
1473 | RsvgHandle *ctx = z->ctx; |
---|
1474 | |
---|
1475 | if (!strcmp ((char *)name, "tspan")) |
---|
1476 | { |
---|
1477 | /* advance the text offset */ |
---|
1478 | RsvgState *tspan = &ctx->state[ctx->n_state - 1]; |
---|
1479 | RsvgState *text = &ctx->state[ctx->n_state - 2]; |
---|
1480 | text->text_offset += (tspan->text_offset - text->text_offset); |
---|
1481 | } |
---|
1482 | else if (!strcmp ((char *)name, "text")) |
---|
1483 | { |
---|
1484 | if (ctx->handler != NULL) |
---|
1485 | { |
---|
1486 | ctx->handler->free (ctx->handler); |
---|
1487 | ctx->handler = z->parent; |
---|
1488 | } |
---|
1489 | } |
---|
1490 | |
---|
1491 | /* pop the state stack */ |
---|
1492 | ctx->n_state--; |
---|
1493 | rsvg_state_finalize (&ctx->state[ctx->n_state]); |
---|
1494 | } |
---|
1495 | |
---|
1496 | static void |
---|
1497 | rsvg_start_text (RsvgHandle *ctx, const xmlChar **atts) |
---|
1498 | { |
---|
1499 | int i; |
---|
1500 | double affine[6] ; |
---|
1501 | double x, y, dx, dy; |
---|
1502 | const char * klazz = NULL; |
---|
1503 | RsvgState *state; |
---|
1504 | |
---|
1505 | RsvgSaxHandlerText *handler = g_new0 (RsvgSaxHandlerText, 1); |
---|
1506 | handler->super.free = rsvg_text_handler_free; |
---|
1507 | handler->super.characters = rsvg_text_handler_characters; |
---|
1508 | handler->super.start_element = rsvg_text_handler_start; |
---|
1509 | handler->super.end_element = rsvg_text_handler_end; |
---|
1510 | handler->ctx = ctx; |
---|
1511 | |
---|
1512 | x = y = dx = dy = 0.; |
---|
1513 | |
---|
1514 | state = &ctx->state[ctx->n_state - 1]; |
---|
1515 | |
---|
1516 | if (atts != NULL) |
---|
1517 | { |
---|
1518 | for (i = 0; atts[i] != NULL; i += 2) |
---|
1519 | { |
---|
1520 | if (!strcmp ((char *)atts[i], "x")) |
---|
1521 | x = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
1522 | else if (!strcmp ((char *)atts[i], "y")) |
---|
1523 | y = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
1524 | else if (!strcmp ((char *)atts[i], "dx")) |
---|
1525 | dx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
1526 | else if (!strcmp ((char *)atts[i], "dy")) |
---|
1527 | dy = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
1528 | else if (!strcmp ((char *)atts[i], "class")) |
---|
1529 | klazz = (const char *)atts[i + 1]; |
---|
1530 | } |
---|
1531 | } |
---|
1532 | |
---|
1533 | x += dx ; |
---|
1534 | y += dy ; |
---|
1535 | |
---|
1536 | art_affine_translate (affine, x, y); |
---|
1537 | art_affine_multiply (state->affine, affine, state->affine); |
---|
1538 | |
---|
1539 | rsvg_parse_style_attrs (ctx, "text", klazz, atts); |
---|
1540 | |
---|
1541 | handler->parent = ctx->handler; |
---|
1542 | ctx->handler = &handler->super; |
---|
1543 | } |
---|
1544 | |
---|
1545 | /* end text */ |
---|
1546 | |
---|
1547 | typedef struct _RsvgSaxHandlerDefs { |
---|
1548 | RsvgSaxHandler super; |
---|
1549 | RsvgHandle *ctx; |
---|
1550 | } RsvgSaxHandlerDefs; |
---|
1551 | |
---|
1552 | typedef struct _RsvgSaxHandlerStyle { |
---|
1553 | RsvgSaxHandler super; |
---|
1554 | RsvgSaxHandlerDefs *parent; |
---|
1555 | RsvgHandle *ctx; |
---|
1556 | GString *style; |
---|
1557 | } RsvgSaxHandlerStyle; |
---|
1558 | |
---|
1559 | typedef struct _RsvgSaxHandlerGstops { |
---|
1560 | RsvgSaxHandler super; |
---|
1561 | RsvgSaxHandlerDefs *parent; |
---|
1562 | RsvgHandle *ctx; |
---|
1563 | RsvgGradientStops *stops; |
---|
1564 | const char * parent_tag; |
---|
1565 | } RsvgSaxHandlerGstops; |
---|
1566 | |
---|
1567 | static void |
---|
1568 | rsvg_gradient_stop_handler_free (RsvgSaxHandler *self) |
---|
1569 | { |
---|
1570 | g_free (self); |
---|
1571 | } |
---|
1572 | |
---|
1573 | static void |
---|
1574 | rsvg_gradient_stop_handler_start (RsvgSaxHandler *self, const xmlChar *name, |
---|
1575 | const xmlChar **atts) |
---|
1576 | { |
---|
1577 | RsvgSaxHandlerGstops *z = (RsvgSaxHandlerGstops *)self; |
---|
1578 | RsvgGradientStops *stops = z->stops; |
---|
1579 | int i; |
---|
1580 | double offset = 0; |
---|
1581 | gboolean got_offset = FALSE; |
---|
1582 | RsvgState state; |
---|
1583 | int n_stop; |
---|
1584 | |
---|
1585 | if (strcmp ((char *)name, "stop")) |
---|
1586 | { |
---|
1587 | g_warning ("unexpected <%s> element in gradient\n", name); |
---|
1588 | return; |
---|
1589 | } |
---|
1590 | |
---|
1591 | rsvg_state_init (&state); |
---|
1592 | |
---|
1593 | if (atts != NULL) |
---|
1594 | { |
---|
1595 | for (i = 0; atts[i] != NULL; i += 2) |
---|
1596 | { |
---|
1597 | if (!strcmp ((char *)atts[i], "offset")) |
---|
1598 | { |
---|
1599 | /* either a number [0,1] or a percentage */ |
---|
1600 | offset = rsvg_css_parse_normalized_length ((char *)atts[i + 1], z->ctx->dpi, 1., 0., 0.); |
---|
1601 | |
---|
1602 | if (offset < 0.) |
---|
1603 | offset = 0.; |
---|
1604 | else if (offset > 1.) |
---|
1605 | offset = 1.; |
---|
1606 | |
---|
1607 | got_offset = TRUE; |
---|
1608 | } |
---|
1609 | else if (!strcmp ((char *)atts[i], "style")) |
---|
1610 | rsvg_parse_style (z->ctx, &state, (char *)atts[i + 1]); |
---|
1611 | else if (rsvg_is_style_arg ((char *)atts[i])) |
---|
1612 | rsvg_parse_style_pair (z->ctx, &state, |
---|
1613 | (char *)atts[i], (char *)atts[i + 1]); |
---|
1614 | } |
---|
1615 | } |
---|
1616 | |
---|
1617 | rsvg_state_finalize (&state); |
---|
1618 | |
---|
1619 | if (!got_offset) |
---|
1620 | { |
---|
1621 | g_warning ("gradient stop must specify offset\n"); |
---|
1622 | return; |
---|
1623 | } |
---|
1624 | |
---|
1625 | n_stop = stops->n_stop++; |
---|
1626 | if (n_stop == 0) |
---|
1627 | stops->stop = g_new (RsvgGradientStop, 1); |
---|
1628 | else if (!(n_stop & (n_stop - 1))) |
---|
1629 | /* double the allocation if size is a power of two */ |
---|
1630 | stops->stop = g_renew (RsvgGradientStop, stops->stop, n_stop << 1); |
---|
1631 | stops->stop[n_stop].offset = offset; |
---|
1632 | stops->stop[n_stop].rgba = (state.stop_color << 8) | state.stop_opacity; |
---|
1633 | } |
---|
1634 | |
---|
1635 | static void |
---|
1636 | rsvg_gradient_stop_handler_end (RsvgSaxHandler *self, const xmlChar *name) |
---|
1637 | { |
---|
1638 | RsvgSaxHandlerGstops *z = (RsvgSaxHandlerGstops *)self; |
---|
1639 | RsvgHandle *ctx = z->ctx; |
---|
1640 | |
---|
1641 | if (!strcmp((char *)name, z->parent_tag)) |
---|
1642 | { |
---|
1643 | if (ctx->handler != NULL) |
---|
1644 | { |
---|
1645 | ctx->handler->free (ctx->handler); |
---|
1646 | ctx->handler = &z->parent->super; |
---|
1647 | } |
---|
1648 | } |
---|
1649 | } |
---|
1650 | |
---|
1651 | static RsvgSaxHandler * |
---|
1652 | rsvg_gradient_stop_handler_new_clone (RsvgHandle *ctx, RsvgGradientStops *stops, |
---|
1653 | const char * parent) |
---|
1654 | { |
---|
1655 | RsvgSaxHandlerGstops *gstops = g_new0 (RsvgSaxHandlerGstops, 1); |
---|
1656 | |
---|
1657 | gstops->super.free = rsvg_gradient_stop_handler_free; |
---|
1658 | gstops->super.start_element = rsvg_gradient_stop_handler_start; |
---|
1659 | gstops->super.end_element = rsvg_gradient_stop_handler_end; |
---|
1660 | gstops->ctx = ctx; |
---|
1661 | gstops->stops = stops; |
---|
1662 | gstops->parent_tag = parent; |
---|
1663 | |
---|
1664 | gstops->parent = (RsvgSaxHandlerDefs*)ctx->handler; |
---|
1665 | return &gstops->super; |
---|
1666 | } |
---|
1667 | |
---|
1668 | static RsvgSaxHandler * |
---|
1669 | rsvg_gradient_stop_handler_new (RsvgHandle *ctx, RsvgGradientStops **p_stops, |
---|
1670 | const char * parent) |
---|
1671 | { |
---|
1672 | RsvgSaxHandlerGstops *gstops = g_new0 (RsvgSaxHandlerGstops, 1); |
---|
1673 | RsvgGradientStops *stops = g_new (RsvgGradientStops, 1); |
---|
1674 | |
---|
1675 | gstops->super.free = rsvg_gradient_stop_handler_free; |
---|
1676 | gstops->super.start_element = rsvg_gradient_stop_handler_start; |
---|
1677 | gstops->super.end_element = rsvg_gradient_stop_handler_end; |
---|
1678 | gstops->ctx = ctx; |
---|
1679 | gstops->stops = stops; |
---|
1680 | gstops->parent_tag = parent; |
---|
1681 | |
---|
1682 | stops->n_stop = 0; |
---|
1683 | stops->stop = NULL; |
---|
1684 | |
---|
1685 | gstops->parent = (RsvgSaxHandlerDefs*)ctx->handler; |
---|
1686 | *p_stops = stops; |
---|
1687 | return &gstops->super; |
---|
1688 | } |
---|
1689 | |
---|
1690 | static void |
---|
1691 | rsvg_linear_gradient_free (RsvgDefVal *self) |
---|
1692 | { |
---|
1693 | RsvgLinearGradient *z = (RsvgLinearGradient *)self; |
---|
1694 | |
---|
1695 | g_free (z->stops->stop); |
---|
1696 | g_free (z->stops); |
---|
1697 | g_free (self); |
---|
1698 | } |
---|
1699 | |
---|
1700 | static void |
---|
1701 | rsvg_start_linear_gradient (RsvgHandle *ctx, const xmlChar **atts) |
---|
1702 | { |
---|
1703 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
1704 | RsvgLinearGradient *grad = NULL; |
---|
1705 | int i; |
---|
1706 | char *id = NULL; |
---|
1707 | double x1 = 0., y1 = 0., x2 = 0., y2 = 0.; |
---|
1708 | ArtGradientSpread spread = ART_GRADIENT_PAD; |
---|
1709 | const char * xlink_href = NULL; |
---|
1710 | gboolean got_x1, got_x2, got_y1, got_y2, got_spread, cloned; |
---|
1711 | |
---|
1712 | got_x1 = got_x2 = got_y1 = got_y2 = got_spread = cloned = FALSE; |
---|
1713 | |
---|
1714 | /* 100% is the default */ |
---|
1715 | x2 = rsvg_css_parse_normalized_length ("100%", ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
1716 | |
---|
1717 | /* todo: only handles numeric coordinates in gradientUnits = userSpace */ |
---|
1718 | if (atts != NULL) |
---|
1719 | { |
---|
1720 | for (i = 0; atts[i] != NULL; i += 2) |
---|
1721 | { |
---|
1722 | if (!strcmp ((char *)atts[i], "id")) |
---|
1723 | id = (char *)atts[i + 1]; |
---|
1724 | else if (!strcmp ((char *)atts[i], "x1")) |
---|
1725 | x1 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
1726 | else if (!strcmp ((char *)atts[i], "y1")) |
---|
1727 | y1 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
1728 | else if (!strcmp ((char *)atts[i], "x2")) |
---|
1729 | x2 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
1730 | else if (!strcmp ((char *)atts[i], "y2")) |
---|
1731 | y2 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
1732 | else if (!strcmp ((char *)atts[i], "spreadMethod")) |
---|
1733 | { |
---|
1734 | if (!strcmp ((char *)atts[i + 1], "pad")) |
---|
1735 | spread = ART_GRADIENT_PAD; |
---|
1736 | else if (!strcmp ((char *)atts[i + 1], "reflect")) |
---|
1737 | spread = ART_GRADIENT_REFLECT; |
---|
1738 | else if (!strcmp ((char *)atts[i + 1], "repeat")) |
---|
1739 | spread = ART_GRADIENT_REPEAT; |
---|
1740 | } |
---|
1741 | else if (!strcmp ((char *)atts[i], "xlink:href")) |
---|
1742 | xlink_href = (const char *)atts[i + 1]; |
---|
1743 | } |
---|
1744 | } |
---|
1745 | |
---|
1746 | if (xlink_href != NULL) |
---|
1747 | { |
---|
1748 | RsvgLinearGradient * parent = (RsvgLinearGradient*)rsvg_defs_lookup (ctx->defs, xlink_href+1); |
---|
1749 | if (parent != NULL) |
---|
1750 | { |
---|
1751 | cloned = TRUE; |
---|
1752 | grad = rsvg_clone_linear_gradient (parent); |
---|
1753 | ctx->handler = rsvg_gradient_stop_handler_new_clone (ctx, grad->stops, "linearGradient"); |
---|
1754 | } |
---|
1755 | } |
---|
1756 | |
---|
1757 | if (!cloned) |
---|
1758 | { |
---|
1759 | grad = g_new (RsvgLinearGradient, 1); |
---|
1760 | grad->super.type = RSVG_DEF_LINGRAD; |
---|
1761 | grad->super.free = rsvg_linear_gradient_free; |
---|
1762 | ctx->handler = rsvg_gradient_stop_handler_new (ctx, &grad->stops, "linearGradient"); |
---|
1763 | } |
---|
1764 | |
---|
1765 | rsvg_defs_set (ctx->defs, id, &grad->super); |
---|
1766 | |
---|
1767 | for (i = 0; i < 6; i++) |
---|
1768 | grad->affine[i] = state->affine[i]; |
---|
1769 | |
---|
1770 | /* state inherits parent/cloned information unless it's explicity gotten */ |
---|
1771 | grad->x1 = (cloned && !got_x1) ? grad->x1 : x1; |
---|
1772 | grad->y1 = (cloned && !got_y1) ? grad->y1 : y1; |
---|
1773 | grad->x2 = (cloned && !got_x2) ? grad->x2 : x2; |
---|
1774 | grad->y2 = (cloned && !got_y2) ? grad->y1 : y2; |
---|
1775 | grad->spread = (cloned && !got_spread) ? grad->spread : spread; |
---|
1776 | } |
---|
1777 | |
---|
1778 | static void |
---|
1779 | rsvg_radial_gradient_free (RsvgDefVal *self) |
---|
1780 | { |
---|
1781 | RsvgRadialGradient *z = (RsvgRadialGradient *)self; |
---|
1782 | |
---|
1783 | g_free (z->stops->stop); |
---|
1784 | g_free (z->stops); |
---|
1785 | g_free (self); |
---|
1786 | } |
---|
1787 | |
---|
1788 | static void |
---|
1789 | rsvg_start_radial_gradient (RsvgHandle *ctx, const xmlChar **atts) |
---|
1790 | { |
---|
1791 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
1792 | RsvgRadialGradient *grad = NULL; |
---|
1793 | int i; |
---|
1794 | char *id = NULL; |
---|
1795 | double cx = 0., cy = 0., r = 0., fx = 0., fy = 0.; |
---|
1796 | const char * xlink_href = NULL; |
---|
1797 | gboolean got_cx, got_cy, got_r, got_fx, got_fy, cloned; |
---|
1798 | |
---|
1799 | got_cx = got_cy = got_r = got_fx = got_fy = cloned = FALSE; |
---|
1800 | |
---|
1801 | /* setup defaults */ |
---|
1802 | cx = rsvg_css_parse_normalized_length ("50%", ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
1803 | cy = rsvg_css_parse_normalized_length ("50%", ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
1804 | r = rsvg_css_parse_normalized_length ("50%", ctx->dpi, rsvg_viewport_percentage((gdouble)ctx->width, (gdouble)ctx->height), state->font_size, 0.); |
---|
1805 | |
---|
1806 | /* todo: only handles numeric coordinates in gradientUnits = userSpace */ |
---|
1807 | if (atts != NULL) |
---|
1808 | { |
---|
1809 | for (i = 0; atts[i] != NULL; i += 2) |
---|
1810 | { |
---|
1811 | if (!strcmp ((char *)atts[i], "id")) |
---|
1812 | id = (char *)atts[i + 1]; |
---|
1813 | else if (!strcmp ((char *)atts[i], "cx")) { |
---|
1814 | cx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
1815 | got_cx = TRUE; |
---|
1816 | } |
---|
1817 | else if (!strcmp ((char *)atts[i], "cy")) { |
---|
1818 | cy = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
1819 | got_cy = TRUE; |
---|
1820 | } |
---|
1821 | else if (!strcmp ((char *)atts[i], "r")) { |
---|
1822 | r = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, |
---|
1823 | rsvg_viewport_percentage((gdouble)ctx->width, (gdouble)ctx->height), |
---|
1824 | state->font_size, 0.); |
---|
1825 | got_r = TRUE; |
---|
1826 | } |
---|
1827 | else if (!strcmp ((char *)atts[i], "fx")) { |
---|
1828 | fx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
1829 | got_fx = TRUE; |
---|
1830 | } |
---|
1831 | else if (!strcmp ((char *)atts[i], "fy")) { |
---|
1832 | fy = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
1833 | got_fy = TRUE; |
---|
1834 | } |
---|
1835 | else if (!strcmp ((char *)atts[i], "xlink:href")) |
---|
1836 | xlink_href = (const char *)atts[i + 1]; |
---|
1837 | } |
---|
1838 | } |
---|
1839 | |
---|
1840 | if (xlink_href != NULL) |
---|
1841 | { |
---|
1842 | RsvgRadialGradient * parent = (RsvgRadialGradient*)rsvg_defs_lookup (ctx->defs, xlink_href+1); |
---|
1843 | if (parent != NULL) |
---|
1844 | { |
---|
1845 | cloned = TRUE; |
---|
1846 | grad = rsvg_clone_radial_gradient (parent); |
---|
1847 | ctx->handler = rsvg_gradient_stop_handler_new_clone (ctx, grad->stops, "radialGradient"); |
---|
1848 | } |
---|
1849 | } |
---|
1850 | if (!cloned) |
---|
1851 | { |
---|
1852 | grad = g_new (RsvgRadialGradient, 1); |
---|
1853 | grad->super.type = RSVG_DEF_RADGRAD; |
---|
1854 | grad->super.free = rsvg_radial_gradient_free; |
---|
1855 | ctx->handler = rsvg_gradient_stop_handler_new (ctx, &grad->stops, "radialGradient"); |
---|
1856 | |
---|
1857 | if (!got_fx) |
---|
1858 | fx = cx; |
---|
1859 | if (!got_fy) |
---|
1860 | fy = cy; |
---|
1861 | } |
---|
1862 | |
---|
1863 | rsvg_defs_set (ctx->defs, id, &grad->super); |
---|
1864 | |
---|
1865 | for (i = 0; i < 6; i++) |
---|
1866 | grad->affine[i] = state->affine[i]; |
---|
1867 | |
---|
1868 | /* state inherits parent/cloned information unless it's explicity gotten */ |
---|
1869 | grad->cx = (cloned && !got_cx) ? grad->cx: cx; |
---|
1870 | grad->cy = (cloned && !got_cy) ? grad->cy: cy; |
---|
1871 | grad->r = (cloned && !got_r) ? grad->r : r; |
---|
1872 | grad->fx = (cloned && !got_fx) ? grad->fx : fx; |
---|
1873 | grad->fy = (cloned && !got_fy) ? grad->fy : fy; |
---|
1874 | } |
---|
1875 | |
---|
1876 | /* end gradients */ |
---|
1877 | |
---|
1878 | static void |
---|
1879 | rsvg_style_handler_free (RsvgSaxHandler *self) |
---|
1880 | { |
---|
1881 | RsvgSaxHandlerStyle *z = (RsvgSaxHandlerStyle *)self; |
---|
1882 | RsvgHandle *ctx = z->ctx; |
---|
1883 | |
---|
1884 | rsvg_parse_cssbuffer (ctx, z->style->str, z->style->len); |
---|
1885 | |
---|
1886 | g_string_free (z->style, TRUE); |
---|
1887 | g_free (z); |
---|
1888 | } |
---|
1889 | |
---|
1890 | static void |
---|
1891 | rsvg_style_handler_characters (RsvgSaxHandler *self, const xmlChar *ch, int len) |
---|
1892 | { |
---|
1893 | RsvgSaxHandlerStyle *z = (RsvgSaxHandlerStyle *)self; |
---|
1894 | g_string_append_len (z->style, (const char *)ch, len); |
---|
1895 | } |
---|
1896 | |
---|
1897 | static void |
---|
1898 | rsvg_style_handler_start (RsvgSaxHandler *self, const xmlChar *name, |
---|
1899 | const xmlChar **atts) |
---|
1900 | { |
---|
1901 | } |
---|
1902 | |
---|
1903 | static void |
---|
1904 | rsvg_style_handler_end (RsvgSaxHandler *self, const xmlChar *name) |
---|
1905 | { |
---|
1906 | RsvgSaxHandlerStyle *z = (RsvgSaxHandlerStyle *)self; |
---|
1907 | RsvgHandle *ctx = z->ctx; |
---|
1908 | |
---|
1909 | if (!strcmp ((char *)name, "style")) |
---|
1910 | { |
---|
1911 | if (ctx->handler != NULL) |
---|
1912 | { |
---|
1913 | ctx->handler->free (ctx->handler); |
---|
1914 | ctx->handler = &z->parent->super; |
---|
1915 | } |
---|
1916 | } |
---|
1917 | } |
---|
1918 | |
---|
1919 | static void |
---|
1920 | rsvg_start_style (RsvgHandle *ctx, const xmlChar **atts) |
---|
1921 | { |
---|
1922 | RsvgSaxHandlerStyle *handler = g_new0 (RsvgSaxHandlerStyle, 1); |
---|
1923 | |
---|
1924 | handler->super.free = rsvg_style_handler_free; |
---|
1925 | handler->super.characters = rsvg_style_handler_characters; |
---|
1926 | handler->super.start_element = rsvg_style_handler_start; |
---|
1927 | handler->super.end_element = rsvg_style_handler_end; |
---|
1928 | handler->ctx = ctx; |
---|
1929 | |
---|
1930 | handler->style = g_string_new (NULL); |
---|
1931 | |
---|
1932 | handler->parent = (RsvgSaxHandlerDefs*)ctx->handler; |
---|
1933 | ctx->handler = &handler->super; |
---|
1934 | } |
---|
1935 | |
---|
1936 | /* */ |
---|
1937 | |
---|
1938 | static void |
---|
1939 | rsvg_defs_handler_free (RsvgSaxHandler *self) |
---|
1940 | { |
---|
1941 | g_free (self); |
---|
1942 | } |
---|
1943 | |
---|
1944 | static void |
---|
1945 | rsvg_defs_handler_characters (RsvgSaxHandler *self, const xmlChar *ch, int len) |
---|
1946 | { |
---|
1947 | } |
---|
1948 | |
---|
1949 | static void |
---|
1950 | rsvg_defs_handler_start (RsvgSaxHandler *self, const xmlChar *name, |
---|
1951 | const xmlChar **atts) |
---|
1952 | { |
---|
1953 | RsvgSaxHandlerDefs *z = (RsvgSaxHandlerDefs *)self; |
---|
1954 | RsvgHandle *ctx = z->ctx; |
---|
1955 | |
---|
1956 | /* push the state stack */ |
---|
1957 | if (ctx->n_state == ctx->n_state_max) |
---|
1958 | ctx->state = g_renew (RsvgState, ctx->state, ctx->n_state_max <<= 1); |
---|
1959 | if (ctx->n_state) |
---|
1960 | rsvg_state_clone (&ctx->state[ctx->n_state], |
---|
1961 | &ctx->state[ctx->n_state - 1]); |
---|
1962 | else |
---|
1963 | rsvg_state_init (ctx->state); |
---|
1964 | ctx->n_state++; |
---|
1965 | |
---|
1966 | if (!strcmp ((char *)name, "linearGradient")) |
---|
1967 | rsvg_start_linear_gradient (ctx, atts); |
---|
1968 | else if (!strcmp ((char *)name, "radialGradient")) |
---|
1969 | rsvg_start_radial_gradient (ctx, atts); |
---|
1970 | else if (!strcmp ((char *)name, "style")) |
---|
1971 | rsvg_start_style (ctx, atts); |
---|
1972 | } |
---|
1973 | |
---|
1974 | static void |
---|
1975 | rsvg_defs_handler_end (RsvgSaxHandler *self, const xmlChar *name) |
---|
1976 | { |
---|
1977 | RsvgSaxHandlerDefs *z = (RsvgSaxHandlerDefs *)self; |
---|
1978 | RsvgHandle *ctx = z->ctx; |
---|
1979 | |
---|
1980 | if (!strcmp((char *)name, "defs")) |
---|
1981 | { |
---|
1982 | if (ctx->handler != NULL) |
---|
1983 | { |
---|
1984 | ctx->handler->free (ctx->handler); |
---|
1985 | ctx->handler = NULL; |
---|
1986 | } |
---|
1987 | } |
---|
1988 | |
---|
1989 | /* pop the state stack */ |
---|
1990 | ctx->n_state--; |
---|
1991 | rsvg_state_finalize (&ctx->state[ctx->n_state]); |
---|
1992 | } |
---|
1993 | |
---|
1994 | static void |
---|
1995 | rsvg_start_defs (RsvgHandle *ctx, const xmlChar **atts) |
---|
1996 | { |
---|
1997 | RsvgSaxHandlerDefs *handler = g_new0 (RsvgSaxHandlerDefs, 1); |
---|
1998 | |
---|
1999 | handler->super.free = rsvg_defs_handler_free; |
---|
2000 | handler->super.characters = rsvg_defs_handler_characters; |
---|
2001 | handler->super.start_element = rsvg_defs_handler_start; |
---|
2002 | handler->super.end_element = rsvg_defs_handler_end; |
---|
2003 | handler->ctx = ctx; |
---|
2004 | |
---|
2005 | ctx->handler = &handler->super; |
---|
2006 | } |
---|
2007 | |
---|
2008 | /* end defs */ |
---|
2009 | |
---|
2010 | static GString * |
---|
2011 | rsvg_make_poly_point_list(const char * points) |
---|
2012 | { |
---|
2013 | guint idx = 0, size = strlen(points); |
---|
2014 | GString * str = g_string_sized_new (size); |
---|
2015 | |
---|
2016 | while (idx < size) |
---|
2017 | { |
---|
2018 | /* scan for first point */ |
---|
2019 | while (!g_ascii_isdigit (points[idx]) && (points[idx] != '.') |
---|
2020 | && (points[idx] != '-') && (idx < size)) |
---|
2021 | idx++; |
---|
2022 | |
---|
2023 | /* now build up the point list (everything until next letter!) */ |
---|
2024 | if (idx < size && points[idx] == '-') |
---|
2025 | g_string_append_c (str, points[idx++]); /* handle leading '-' */ |
---|
2026 | while ((g_ascii_isdigit (points[idx]) || (points[idx] == '.')) && (idx < size)) |
---|
2027 | g_string_append_c (str, points[idx++]); |
---|
2028 | |
---|
2029 | g_string_append_c (str, ' '); |
---|
2030 | } |
---|
2031 | |
---|
2032 | return str; |
---|
2033 | } |
---|
2034 | |
---|
2035 | static void |
---|
2036 | rsvg_start_any_poly(RsvgHandle *ctx, const xmlChar **atts, gboolean is_polyline) |
---|
2037 | { |
---|
2038 | /* the only difference i'm making between polygon and polyline is |
---|
2039 | that a polyline closes the path */ |
---|
2040 | |
---|
2041 | int i; |
---|
2042 | const char * verts = (const char *)NULL; |
---|
2043 | GString * g = NULL; |
---|
2044 | gchar ** pointlist = NULL; |
---|
2045 | const char * klazz = NULL; |
---|
2046 | |
---|
2047 | if (atts != NULL) |
---|
2048 | { |
---|
2049 | for (i = 0; atts[i] != NULL; i += 2) |
---|
2050 | { |
---|
2051 | /* support for svg < 1.0 which used verts */ |
---|
2052 | if (!strcmp ((char *)atts[i], "verts") || !strcmp ((char *)atts[i], "points")) |
---|
2053 | verts = (const char *)atts[i + 1]; |
---|
2054 | else if (!strcmp ((char *)atts[i], "class")) |
---|
2055 | klazz = (const char *)atts[i + 1]; |
---|
2056 | } |
---|
2057 | } |
---|
2058 | |
---|
2059 | if (!verts) |
---|
2060 | return; |
---|
2061 | |
---|
2062 | rsvg_parse_style_attrs (ctx, (is_polyline ? "polyline" : "polygon"), klazz, atts); |
---|
2063 | |
---|
2064 | /* todo: make the following more memory and CPU friendly */ |
---|
2065 | g = rsvg_make_poly_point_list (verts); |
---|
2066 | pointlist = g_strsplit (g->str, " ", -1); |
---|
2067 | g_string_free (g, TRUE); |
---|
2068 | |
---|
2069 | /* represent as a "moveto, lineto*, close" path */ |
---|
2070 | if (pointlist) |
---|
2071 | { |
---|
2072 | GString * d = g_string_sized_new (strlen(verts)); |
---|
2073 | g_string_append_printf (d, "M %s %s ", pointlist[0], pointlist[1] ); |
---|
2074 | |
---|
2075 | for (i = 2; pointlist[i] != NULL && pointlist[i][0] != '\0'; i += 2) |
---|
2076 | g_string_append_printf (d, "L %s %s ", pointlist[i], pointlist[i+1]); |
---|
2077 | |
---|
2078 | if (!is_polyline) |
---|
2079 | g_string_append (d, "Z"); |
---|
2080 | |
---|
2081 | rsvg_render_path (ctx, d->str); |
---|
2082 | g_string_free (d, TRUE); |
---|
2083 | g_strfreev(pointlist); |
---|
2084 | } |
---|
2085 | } |
---|
2086 | |
---|
2087 | static void |
---|
2088 | rsvg_start_polygon (RsvgHandle *ctx, const xmlChar **atts) |
---|
2089 | { |
---|
2090 | rsvg_start_any_poly (ctx, atts, FALSE); |
---|
2091 | } |
---|
2092 | |
---|
2093 | static void |
---|
2094 | rsvg_start_polyline (RsvgHandle *ctx, const xmlChar **atts) |
---|
2095 | { |
---|
2096 | rsvg_start_any_poly (ctx, atts, TRUE); |
---|
2097 | } |
---|
2098 | |
---|
2099 | /* TODO 1: issue with affining alpha images - this is gdkpixbuf's fault... |
---|
2100 | * TODO 2: issue with rotating images - do we want to rotate the whole |
---|
2101 | * canvas 2x to get this right, only to have #1 bite us? |
---|
2102 | */ |
---|
2103 | static void |
---|
2104 | rsvg_start_image (RsvgHandle *ctx, const xmlChar **atts) |
---|
2105 | { |
---|
2106 | int i; |
---|
2107 | double x = 0., y = 0., w = -1., h = -1.; |
---|
2108 | const char * href = NULL; |
---|
2109 | const char * klazz = NULL; |
---|
2110 | |
---|
2111 | GdkPixbuf *img; |
---|
2112 | GError *err = NULL; |
---|
2113 | |
---|
2114 | gboolean has_alpha; |
---|
2115 | guchar *rgb = NULL; |
---|
2116 | int dest_rowstride; |
---|
2117 | double tmp_affine[6]; |
---|
2118 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
2119 | |
---|
2120 | if (atts != NULL) |
---|
2121 | { |
---|
2122 | for (i = 0; atts[i] != NULL; i += 2) |
---|
2123 | { |
---|
2124 | if (!strcmp ((char *)atts[i], "x")) |
---|
2125 | x = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
2126 | else if (!strcmp ((char *)atts[i], "y")) |
---|
2127 | y = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
2128 | else if (!strcmp ((char *)atts[i], "width")) |
---|
2129 | w = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
2130 | else if (!strcmp ((char *)atts[i], "height")) |
---|
2131 | h = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
2132 | /* path is used by some older adobe illustrator versions */ |
---|
2133 | else if (!strcmp ((char *)atts[i], "path") || !strcmp((char *)atts[i], "xlink:href")) |
---|
2134 | href = (const char *)atts[i + 1]; |
---|
2135 | else if (!strcmp ((char *)atts[i], "class")) |
---|
2136 | klazz = (const char *)atts[i + 1]; |
---|
2137 | } |
---|
2138 | } |
---|
2139 | |
---|
2140 | if (!href || x < 0. || y < 0. || w <= 0. || h <= 0.) |
---|
2141 | return; |
---|
2142 | |
---|
2143 | rsvg_parse_style_attrs (ctx, "image", klazz, atts); |
---|
2144 | |
---|
2145 | img = gdk_pixbuf_new_from_file (href, &err); |
---|
2146 | |
---|
2147 | if (!img) |
---|
2148 | { |
---|
2149 | if (err) |
---|
2150 | { |
---|
2151 | g_warning ("Couldn't load pixbuf (%s): %s\n", href, err->message); |
---|
2152 | g_error_free (err); |
---|
2153 | } |
---|
2154 | return; |
---|
2155 | } |
---|
2156 | |
---|
2157 | /* scale/resize the dest image */ |
---|
2158 | art_affine_scale (tmp_affine, (double)w / (double)gdk_pixbuf_get_width (img), |
---|
2159 | (double)h / (double)gdk_pixbuf_get_height (img)); |
---|
2160 | art_affine_multiply (state->affine, tmp_affine, state->affine); |
---|
2161 | |
---|
2162 | has_alpha = gdk_pixbuf_get_has_alpha (img); |
---|
2163 | dest_rowstride = (int)(w * (has_alpha ? 4 : 3) + 3) & ~3; |
---|
2164 | rgb = g_new (guchar, h * dest_rowstride); |
---|
2165 | |
---|
2166 | if(has_alpha) |
---|
2167 | art_rgb_rgba_affine (rgb, 0, 0, w, h, dest_rowstride, |
---|
2168 | gdk_pixbuf_get_pixels (img), |
---|
2169 | gdk_pixbuf_get_width (img), |
---|
2170 | gdk_pixbuf_get_height (img), |
---|
2171 | gdk_pixbuf_get_rowstride (img), |
---|
2172 | state->affine, |
---|
2173 | ART_FILTER_NEAREST, |
---|
2174 | NULL); |
---|
2175 | else |
---|
2176 | art_rgb_affine (rgb, 0, 0, w, h, dest_rowstride, |
---|
2177 | gdk_pixbuf_get_pixels (img), |
---|
2178 | gdk_pixbuf_get_width (img), |
---|
2179 | gdk_pixbuf_get_height (img), |
---|
2180 | gdk_pixbuf_get_rowstride (img), |
---|
2181 | state->affine, |
---|
2182 | ART_FILTER_NEAREST, |
---|
2183 | NULL); |
---|
2184 | |
---|
2185 | g_object_unref (G_OBJECT (img)); |
---|
2186 | img = gdk_pixbuf_new_from_data (rgb, GDK_COLORSPACE_RGB, has_alpha, 8, w, h, dest_rowstride, NULL, NULL); |
---|
2187 | |
---|
2188 | if (!img) |
---|
2189 | { |
---|
2190 | g_free (rgb); |
---|
2191 | return; |
---|
2192 | } |
---|
2193 | |
---|
2194 | gdk_pixbuf_copy_area (img, 0, 0, |
---|
2195 | gdk_pixbuf_get_width (img) * state->affine[0], |
---|
2196 | gdk_pixbuf_get_height (img) * state->affine[3], |
---|
2197 | ctx->pixbuf, |
---|
2198 | state->affine[4] + x, |
---|
2199 | state->affine[5] + y); |
---|
2200 | |
---|
2201 | g_object_unref (G_OBJECT (img)); |
---|
2202 | g_free (rgb); |
---|
2203 | } |
---|
2204 | |
---|
2205 | static void |
---|
2206 | rsvg_start_line (RsvgHandle *ctx, const xmlChar **atts) |
---|
2207 | { |
---|
2208 | int i; |
---|
2209 | double x1 = 0, y1 = 0, x2 = 0, y2 = 0; |
---|
2210 | char * d = NULL; |
---|
2211 | const char * klazz = NULL; |
---|
2212 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
2213 | |
---|
2214 | if (atts != NULL) |
---|
2215 | { |
---|
2216 | for (i = 0; atts[i] != NULL; i += 2) |
---|
2217 | { |
---|
2218 | if (!strcmp ((char *)atts[i], "x1")) |
---|
2219 | x1 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
2220 | else if (!strcmp ((char *)atts[i], "y1")) |
---|
2221 | y1 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
2222 | if (!strcmp ((char *)atts[i], "x2")) |
---|
2223 | x2 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
2224 | else if (!strcmp ((char *)atts[i], "y2")) |
---|
2225 | y2 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
2226 | else if (!strcmp ((char *)atts[i], "class")) |
---|
2227 | klazz = (const char *)atts[i + 1]; |
---|
2228 | } |
---|
2229 | } |
---|
2230 | rsvg_parse_style_attrs (ctx, "line", klazz, atts); |
---|
2231 | |
---|
2232 | /* emulate a line using a path */ |
---|
2233 | d = g_strdup_printf ("M %f %f L %f %f", x1, y1, x2, y2); |
---|
2234 | |
---|
2235 | rsvg_render_path (ctx, d); |
---|
2236 | g_free (d); |
---|
2237 | } |
---|
2238 | |
---|
2239 | static void |
---|
2240 | rsvg_start_rect (RsvgHandle *ctx, const xmlChar **atts) |
---|
2241 | { |
---|
2242 | int i; |
---|
2243 | double x = -1, y = -1, w = -1, h = -1, rx = 0, ry = 0; |
---|
2244 | char * d = NULL; |
---|
2245 | const char * klazz = NULL; |
---|
2246 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
2247 | |
---|
2248 | if (atts != NULL) |
---|
2249 | { |
---|
2250 | for (i = 0; atts[i] != NULL; i += 2) |
---|
2251 | { |
---|
2252 | if (!strcmp ((char *)atts[i], "x")) |
---|
2253 | x = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
2254 | else if (!strcmp ((char *)atts[i], "y")) |
---|
2255 | y = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
2256 | else if (!strcmp ((char *)atts[i], "width")) |
---|
2257 | w = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
2258 | else if (!strcmp ((char *)atts[i], "height")) |
---|
2259 | h = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
2260 | else if (!strcmp ((char *)atts[i], "rx")) |
---|
2261 | rx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
2262 | else if (!strcmp ((char *)atts[i], "ry")) |
---|
2263 | ry = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
2264 | else if (!strcmp ((char *)atts[i], "class")) |
---|
2265 | klazz = (const char *)atts[i + 1]; |
---|
2266 | } |
---|
2267 | } |
---|
2268 | |
---|
2269 | if (x < 0. || y < 0. || w < 0. || h < 0. || rx < 0. || ry < 0.) |
---|
2270 | return; |
---|
2271 | |
---|
2272 | rsvg_parse_style_attrs (ctx, "rect", klazz, atts); |
---|
2273 | |
---|
2274 | /* incrementing y by 1 properly draws borders. this is a HACK */ |
---|
2275 | y++; |
---|
2276 | |
---|
2277 | /* emulate a rect using a path */ |
---|
2278 | d = g_strdup_printf ("M %f %f " |
---|
2279 | "H %f " |
---|
2280 | "A %f,%f %f,%f %f %f,%f " |
---|
2281 | "V %f " |
---|
2282 | "A %f,%f %f,%f %f %f,%f " |
---|
2283 | "H %f " |
---|
2284 | "A %f,%f %f,%f %f %f,%f " |
---|
2285 | "V %f " |
---|
2286 | "A %f,%f %f,%f %f %f,%f", |
---|
2287 | x + rx, y, |
---|
2288 | x + w - rx, |
---|
2289 | rx, ry, 0., 0., 1., x + w, y + ry, |
---|
2290 | y + h - ry, |
---|
2291 | rx, ry, 0., 0., 1., x + w - rx, y + h, |
---|
2292 | x + rx, |
---|
2293 | rx, ry, 0., 0., 1., x, y + h - ry, |
---|
2294 | y + ry, |
---|
2295 | rx, ry, 0., 0., 1., x + rx, y); |
---|
2296 | |
---|
2297 | rsvg_render_path (ctx, d); |
---|
2298 | g_free (d); |
---|
2299 | } |
---|
2300 | |
---|
2301 | static void |
---|
2302 | rsvg_start_circle (RsvgHandle *ctx, const xmlChar **atts) |
---|
2303 | { |
---|
2304 | int i; |
---|
2305 | double cx = 0, cy = 0, r = 0; |
---|
2306 | char * d = NULL; |
---|
2307 | const char * klazz = NULL; |
---|
2308 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
2309 | |
---|
2310 | if (atts != NULL) |
---|
2311 | { |
---|
2312 | for (i = 0; atts[i] != NULL; i += 2) |
---|
2313 | { |
---|
2314 | if (!strcmp ((char *)atts[i], "cx")) |
---|
2315 | cx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
2316 | else if (!strcmp ((char *)atts[i], "cy")) |
---|
2317 | cy = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
2318 | else if (!strcmp ((char *)atts[i], "r")) |
---|
2319 | r = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, |
---|
2320 | rsvg_viewport_percentage((gdouble)ctx->width, (gdouble)ctx->height), |
---|
2321 | state->font_size, 0.); |
---|
2322 | else if (!strcmp ((char *)atts[i], "class")) |
---|
2323 | klazz = (const char *)atts[i + 1]; |
---|
2324 | } |
---|
2325 | } |
---|
2326 | |
---|
2327 | if (cx < 0. || cy < 0. || r <= 0.) |
---|
2328 | return; |
---|
2329 | |
---|
2330 | rsvg_parse_style_attrs (ctx, "circle", klazz, atts); |
---|
2331 | |
---|
2332 | /* approximate a circle using 4 bezier curves */ |
---|
2333 | d = g_strdup_printf ("M %f %f " |
---|
2334 | "C %f %f %f %f %f %f " |
---|
2335 | "C %f %f %f %f %f %f " |
---|
2336 | "C %f %f %f %f %f %f " |
---|
2337 | "C %f %f %f %f %f %f " |
---|
2338 | "Z", |
---|
2339 | cx + r, cy, |
---|
2340 | cx + r, cy + r * RSVG_ARC_MAGIC, cx + r * RSVG_ARC_MAGIC, cy + r, cx, cy + r, |
---|
2341 | cx - r * RSVG_ARC_MAGIC, cy + r, cx - r, cy + r * RSVG_ARC_MAGIC, cx - r, cy, |
---|
2342 | cx - r, cy - r * RSVG_ARC_MAGIC, cx - r * RSVG_ARC_MAGIC, cy - r, cx, cy - r, |
---|
2343 | cx + r * RSVG_ARC_MAGIC, cy - r, cx + r, cy - r * RSVG_ARC_MAGIC, cx + r, cy |
---|
2344 | ); |
---|
2345 | |
---|
2346 | rsvg_render_path (ctx, d); |
---|
2347 | g_free (d); |
---|
2348 | } |
---|
2349 | |
---|
2350 | static void |
---|
2351 | rsvg_start_ellipse (RsvgHandle *ctx, const xmlChar **atts) |
---|
2352 | { |
---|
2353 | int i; |
---|
2354 | double cx = 0, cy = 0, rx = 0, ry = 0; |
---|
2355 | char * d = NULL; |
---|
2356 | const char * klazz = NULL; |
---|
2357 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
2358 | |
---|
2359 | if (atts != NULL) |
---|
2360 | { |
---|
2361 | for (i = 0; atts[i] != NULL; i += 2) |
---|
2362 | { |
---|
2363 | if (!strcmp ((char *)atts[i], "cx")) |
---|
2364 | cx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
2365 | else if (!strcmp ((char *)atts[i], "cy")) |
---|
2366 | cy = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
2367 | else if (!strcmp ((char *)atts[i], "rx")) |
---|
2368 | rx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size, 0.); |
---|
2369 | else if (!strcmp ((char *)atts[i], "ry")) |
---|
2370 | ry = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size, 0.); |
---|
2371 | else if (!strcmp ((char *)atts[i], "class")) |
---|
2372 | klazz = (const char *)atts[i + 1]; |
---|
2373 | } |
---|
2374 | } |
---|
2375 | |
---|
2376 | if (cx < 0. || cy < 0. || rx <= 0. || ry <= 0.) |
---|
2377 | return; |
---|
2378 | |
---|
2379 | rsvg_parse_style_attrs (ctx, "ellipse", klazz, atts); |
---|
2380 | |
---|
2381 | /* approximate an ellipse using 4 bezier curves */ |
---|
2382 | d = g_strdup_printf ("M %f %f " |
---|
2383 | "C %f %f %f %f %f %f " |
---|
2384 | "C %f %f %f %f %f %f " |
---|
2385 | "C %f %f %f %f %f %f " |
---|
2386 | "C %f %f %f %f %f %f " |
---|
2387 | "Z", |
---|
2388 | cx + rx, cy, |
---|
2389 | cx + rx, cy - RSVG_ARC_MAGIC * ry, cx + RSVG_ARC_MAGIC * rx, cy - ry, cx, cy - ry, |
---|
2390 | cx - RSVG_ARC_MAGIC * rx, cy - ry, cx - rx, cy - RSVG_ARC_MAGIC * ry, cx - rx, cy, |
---|
2391 | cx - rx, cy + RSVG_ARC_MAGIC * ry, cx - RSVG_ARC_MAGIC * rx, cy + ry, cx, cy + ry, |
---|
2392 | cx + RSVG_ARC_MAGIC * rx, cy + ry, cx + rx, cy + RSVG_ARC_MAGIC * ry, cx + rx, cy |
---|
2393 | ); |
---|
2394 | |
---|
2395 | rsvg_render_path (ctx, d); |
---|
2396 | g_free (d); |
---|
2397 | |
---|
2398 | return; |
---|
2399 | } |
---|
2400 | |
---|
2401 | static void |
---|
2402 | rsvg_start_element (void *data, const xmlChar *name, const xmlChar **atts) |
---|
2403 | { |
---|
2404 | RsvgHandle *ctx = (RsvgHandle *)data; |
---|
2405 | |
---|
2406 | if (ctx->handler) |
---|
2407 | { |
---|
2408 | ctx->handler_nest++; |
---|
2409 | if (ctx->handler->start_element != NULL) |
---|
2410 | ctx->handler->start_element (ctx->handler, name, atts); |
---|
2411 | } |
---|
2412 | else |
---|
2413 | { |
---|
2414 | /* push the state stack */ |
---|
2415 | if (ctx->n_state == ctx->n_state_max) |
---|
2416 | ctx->state = g_renew (RsvgState, ctx->state, ctx->n_state_max <<= 1); |
---|
2417 | if (ctx->n_state) |
---|
2418 | rsvg_state_clone (&ctx->state[ctx->n_state], |
---|
2419 | &ctx->state[ctx->n_state - 1]); |
---|
2420 | else |
---|
2421 | rsvg_state_init (ctx->state); |
---|
2422 | ctx->n_state++; |
---|
2423 | |
---|
2424 | if (!strcmp ((char *)name, "svg")) |
---|
2425 | rsvg_start_svg (ctx, atts); |
---|
2426 | else if (!strcmp ((char *)name, "g")) |
---|
2427 | rsvg_start_g (ctx, atts); |
---|
2428 | else if (!strcmp ((char *)name, "path")) |
---|
2429 | rsvg_start_path (ctx, atts); |
---|
2430 | else if (!strcmp ((char *)name, "text")) |
---|
2431 | rsvg_start_text (ctx, atts); |
---|
2432 | else if (!strcmp ((char *)name, "image")) |
---|
2433 | rsvg_start_image (ctx, atts); |
---|
2434 | else if (!strcmp ((char *)name, "line")) |
---|
2435 | rsvg_start_line (ctx, atts); |
---|
2436 | else if (!strcmp ((char *)name, "rect")) |
---|
2437 | rsvg_start_rect (ctx, atts); |
---|
2438 | else if (!strcmp ((char *)name, "circle")) |
---|
2439 | rsvg_start_circle (ctx, atts); |
---|
2440 | else if (!strcmp ((char *)name, "ellipse")) |
---|
2441 | rsvg_start_ellipse (ctx, atts); |
---|
2442 | else if (!strcmp ((char *)name, "defs")) |
---|
2443 | rsvg_start_defs (ctx, atts); |
---|
2444 | else if (!strcmp ((char *)name, "polygon")) |
---|
2445 | rsvg_start_polygon (ctx, atts); |
---|
2446 | else if (!strcmp ((char *)name, "polyline")) |
---|
2447 | rsvg_start_polyline (ctx, atts); |
---|
2448 | |
---|
2449 | /* */ |
---|
2450 | else if (!strcmp ((char *)name, "linearGradient")) |
---|
2451 | rsvg_start_linear_gradient (ctx, atts); |
---|
2452 | else if (!strcmp ((char *)name, "radialGradient")) |
---|
2453 | rsvg_start_radial_gradient (ctx, atts); |
---|
2454 | } |
---|
2455 | } |
---|
2456 | |
---|
2457 | static void |
---|
2458 | rsvg_end_element (void *data, const xmlChar *name) |
---|
2459 | { |
---|
2460 | RsvgHandle *ctx = (RsvgHandle *)data; |
---|
2461 | |
---|
2462 | if (ctx->handler_nest > 0) |
---|
2463 | { |
---|
2464 | if (ctx->handler->end_element != NULL) |
---|
2465 | ctx->handler->end_element (ctx->handler, name); |
---|
2466 | ctx->handler_nest--; |
---|
2467 | } |
---|
2468 | else |
---|
2469 | { |
---|
2470 | if (ctx->handler != NULL) |
---|
2471 | { |
---|
2472 | ctx->handler->free (ctx->handler); |
---|
2473 | ctx->handler = NULL; |
---|
2474 | } |
---|
2475 | |
---|
2476 | if (!strcmp ((char *)name, "g")) |
---|
2477 | rsvg_end_g (ctx); |
---|
2478 | |
---|
2479 | /* pop the state stack */ |
---|
2480 | ctx->n_state--; |
---|
2481 | rsvg_state_finalize (&ctx->state[ctx->n_state]); |
---|
2482 | } |
---|
2483 | } |
---|
2484 | |
---|
2485 | static void |
---|
2486 | rsvg_characters (void *data, const xmlChar *ch, int len) |
---|
2487 | { |
---|
2488 | RsvgHandle *ctx = (RsvgHandle *)data; |
---|
2489 | |
---|
2490 | if (ctx->handler && ctx->handler->characters != NULL) |
---|
2491 | ctx->handler->characters (ctx->handler, ch, len); |
---|
2492 | } |
---|
2493 | |
---|
2494 | static xmlEntityPtr |
---|
2495 | rsvg_get_entity (void *data, const xmlChar *name) |
---|
2496 | { |
---|
2497 | RsvgHandle *ctx = (RsvgHandle *)data; |
---|
2498 | |
---|
2499 | return (xmlEntityPtr)g_hash_table_lookup (ctx->entities, name); |
---|
2500 | } |
---|
2501 | |
---|
2502 | static void |
---|
2503 | rsvg_entity_decl (void *data, const xmlChar *name, int type, |
---|
2504 | const xmlChar *publicId, const xmlChar *systemId, xmlChar *content) |
---|
2505 | { |
---|
2506 | RsvgHandle *ctx = (RsvgHandle *)data; |
---|
2507 | GHashTable *entities = ctx->entities; |
---|
2508 | xmlEntityPtr entity; |
---|
2509 | char *dupname; |
---|
2510 | |
---|
2511 | entity = g_new0 (xmlEntity, 1); |
---|
2512 | entity->type = type; |
---|
2513 | entity->length = strlen (name); |
---|
2514 | dupname = g_strdup (name); |
---|
2515 | entity->name = dupname; |
---|
2516 | entity->ExternalID = g_strdup (publicId); |
---|
2517 | entity->SystemID = g_strdup (systemId); |
---|
2518 | if (content) |
---|
2519 | { |
---|
2520 | entity->content = xmlMemStrdup (content); |
---|
2521 | entity->length = strlen (content); |
---|
2522 | } |
---|
2523 | g_hash_table_insert (entities, dupname, entity); |
---|
2524 | } |
---|
2525 | |
---|
2526 | static void |
---|
2527 | rsvg_error_cb (void *data, const char *msg, ...) |
---|
2528 | { |
---|
2529 | va_list args; |
---|
2530 | |
---|
2531 | va_start (args, msg); |
---|
2532 | vfprintf (stderr, msg, args); |
---|
2533 | va_end (args); |
---|
2534 | } |
---|
2535 | |
---|
2536 | static xmlSAXHandler rsvgSAXHandlerStruct = { |
---|
2537 | NULL, /* internalSubset */ |
---|
2538 | NULL, /* isStandalone */ |
---|
2539 | NULL, /* hasInternalSubset */ |
---|
2540 | NULL, /* hasExternalSubset */ |
---|
2541 | NULL, /* resolveEntity */ |
---|
2542 | rsvg_get_entity, /* getEntity */ |
---|
2543 | rsvg_entity_decl, /* entityDecl */ |
---|
2544 | NULL, /* notationDecl */ |
---|
2545 | NULL, /* attributeDecl */ |
---|
2546 | NULL, /* elementDecl */ |
---|
2547 | NULL, /* unparsedEntityDecl */ |
---|
2548 | NULL, /* setDocumentLocator */ |
---|
2549 | NULL, /* startDocument */ |
---|
2550 | NULL, /* endDocument */ |
---|
2551 | rsvg_start_element, /* startElement */ |
---|
2552 | rsvg_end_element, /* endElement */ |
---|
2553 | NULL, /* reference */ |
---|
2554 | rsvg_characters, /* characters */ |
---|
2555 | NULL, /* ignorableWhitespace */ |
---|
2556 | NULL, /* processingInstruction */ |
---|
2557 | NULL, /* comment */ |
---|
2558 | NULL, /* xmlParserWarning */ |
---|
2559 | rsvg_error_cb, /* xmlParserError */ |
---|
2560 | rsvg_error_cb, /* xmlParserFatalError */ |
---|
2561 | NULL, /* getParameterEntity */ |
---|
2562 | rsvg_characters, /* cdataCallback */ |
---|
2563 | NULL /* */ |
---|
2564 | }; |
---|
2565 | |
---|
2566 | GQuark |
---|
2567 | rsvg_error_quark (void) |
---|
2568 | { |
---|
2569 | static GQuark q = 0; |
---|
2570 | if (q == 0) |
---|
2571 | q = g_quark_from_static_string ("rsvg-error-quark"); |
---|
2572 | |
---|
2573 | return q; |
---|
2574 | } |
---|
2575 | |
---|
2576 | /** |
---|
2577 | * rsvg_handle_new: |
---|
2578 | * @void: |
---|
2579 | * |
---|
2580 | * Returns a new rsvg handle. Must be freed with @rsvg_handle_free. This |
---|
2581 | * handle can be used for dynamically loading an image. You need to feed it |
---|
2582 | * data using @rsvg_handle_write, then call @rsvg_handle_close when done. No |
---|
2583 | * more than one image can be loaded with one handle. |
---|
2584 | * |
---|
2585 | * Return value: A new #RsvgHandle |
---|
2586 | **/ |
---|
2587 | RsvgHandle * |
---|
2588 | rsvg_handle_new (void) |
---|
2589 | { |
---|
2590 | RsvgHandle *handle; |
---|
2591 | |
---|
2592 | handle = g_new0 (RsvgHandle, 1); |
---|
2593 | handle->n_state = 0; |
---|
2594 | handle->n_state_max = 16; |
---|
2595 | handle->state = g_new (RsvgState, handle->n_state_max); |
---|
2596 | handle->defs = rsvg_defs_new (); |
---|
2597 | handle->handler_nest = 0; |
---|
2598 | handle->entities = g_hash_table_new (g_str_hash, g_str_equal); |
---|
2599 | handle->dpi = internal_dpi; |
---|
2600 | |
---|
2601 | handle->css_props = g_hash_table_new_full (g_str_hash, g_str_equal, |
---|
2602 | g_free, g_free); |
---|
2603 | |
---|
2604 | handle->ctxt = NULL; |
---|
2605 | |
---|
2606 | return handle; |
---|
2607 | } |
---|
2608 | |
---|
2609 | /** |
---|
2610 | * rsvg_set_default_dpi |
---|
2611 | * @dpi: Dots Per Inch (aka Pixels Per Inch) |
---|
2612 | * |
---|
2613 | * Sets the DPI for the all future outgoing pixbufs. Common values are |
---|
2614 | * 72, 90, and 300 DPI. Passing a number <= 0 to #dpi will |
---|
2615 | * reset the DPI to whatever the default value happens to be. |
---|
2616 | */ |
---|
2617 | void |
---|
2618 | rsvg_set_default_dpi (double dpi) |
---|
2619 | { |
---|
2620 | if (dpi <= 0.) |
---|
2621 | internal_dpi = RSVG_DEFAULT_DPI; |
---|
2622 | else |
---|
2623 | internal_dpi = dpi; |
---|
2624 | } |
---|
2625 | |
---|
2626 | /** |
---|
2627 | * rsvg_handle_set_dpi |
---|
2628 | * @handle: An #RsvgHandle |
---|
2629 | * @dpi: Dots Per Inch (aka Pixels Per Inch) |
---|
2630 | * |
---|
2631 | * Sets the DPI for the outgoing pixbuf. Common values are |
---|
2632 | * 72, 90, and 300 DPI. Passing a number <= 0 to #dpi will |
---|
2633 | * reset the DPI to whatever the default value happens to be. |
---|
2634 | */ |
---|
2635 | void |
---|
2636 | rsvg_handle_set_dpi (RsvgHandle * handle, double dpi) |
---|
2637 | { |
---|
2638 | g_return_if_fail (handle != NULL); |
---|
2639 | |
---|
2640 | if (dpi <= 0.) |
---|
2641 | handle->dpi = internal_dpi; |
---|
2642 | else |
---|
2643 | handle->dpi = dpi; |
---|
2644 | } |
---|
2645 | |
---|
2646 | /** |
---|
2647 | * rsvg_handle_set_size_callback: |
---|
2648 | * @handle: An #RsvgHandle |
---|
2649 | * @size_func: A sizing function, or %NULL |
---|
2650 | * @user_data: User data to pass to @size_func, or %NULL |
---|
2651 | * @user_data_destroy: Destroy function for @user_data, or %NULL |
---|
2652 | * |
---|
2653 | * Sets the sizing function for the @handle. This function is called right |
---|
2654 | * after the size of the image has been loaded. The size of the image is passed |
---|
2655 | * in to the function, which may then modify these values to set the real size |
---|
2656 | * of the generated pixbuf. If the image has no associated size, then the size |
---|
2657 | * arguments are set to -1. |
---|
2658 | **/ |
---|
2659 | void |
---|
2660 | rsvg_handle_set_size_callback (RsvgHandle *handle, |
---|
2661 | RsvgSizeFunc size_func, |
---|
2662 | gpointer user_data, |
---|
2663 | GDestroyNotify user_data_destroy) |
---|
2664 | { |
---|
2665 | g_return_if_fail (handle != NULL); |
---|
2666 | |
---|
2667 | if (handle->user_data_destroy) |
---|
2668 | (* handle->user_data_destroy) (handle->user_data); |
---|
2669 | |
---|
2670 | handle->size_func = size_func; |
---|
2671 | handle->user_data = user_data; |
---|
2672 | handle->user_data_destroy = user_data_destroy; |
---|
2673 | } |
---|
2674 | |
---|
2675 | /** |
---|
2676 | * rsvg_handle_write: |
---|
2677 | * @handle: An #RsvgHandle |
---|
2678 | * @buf: Pointer to svg data |
---|
2679 | * @count: length of the @buf buffer in bytes |
---|
2680 | * @error: return location for errors |
---|
2681 | * |
---|
2682 | * Loads the next @count bytes of the image. This will return #TRUE if the data |
---|
2683 | * was loaded successful, and #FALSE if an error occurred. In the latter case, |
---|
2684 | * the loader will be closed, and will not accept further writes. If FALSE is |
---|
2685 | * returned, @error will be set to an error from the #RSVG_ERROR domain. |
---|
2686 | * |
---|
2687 | * Return value: #TRUE if the write was successful, or #FALSE if there was an |
---|
2688 | * error. |
---|
2689 | **/ |
---|
2690 | gboolean |
---|
2691 | rsvg_handle_write (RsvgHandle *handle, |
---|
2692 | const guchar *buf, |
---|
2693 | gsize count, |
---|
2694 | GError **error) |
---|
2695 | { |
---|
2696 | GError *real_error; |
---|
2697 | g_return_val_if_fail (handle != NULL, FALSE); |
---|
2698 | |
---|
2699 | handle->error = &real_error; |
---|
2700 | if (handle->ctxt == NULL) |
---|
2701 | { |
---|
2702 | handle->ctxt = xmlCreatePushParserCtxt ( |
---|
2703 | &rsvgSAXHandlerStruct, handle, NULL, 0, NULL); |
---|
2704 | handle->ctxt->replaceEntities = TRUE; |
---|
2705 | } |
---|
2706 | |
---|
2707 | xmlParseChunk (handle->ctxt, buf, count, 0); |
---|
2708 | |
---|
2709 | handle->error = NULL; |
---|
2710 | /* FIXME: Error handling not implemented. */ |
---|
2711 | /* if (*real_error != NULL) |
---|
2712 | { |
---|
2713 | g_propagate_error (error, real_error); |
---|
2714 | return FALSE; |
---|
2715 | }*/ |
---|
2716 | return TRUE; |
---|
2717 | } |
---|
2718 | |
---|
2719 | /** |
---|
2720 | * rsvg_handle_close: |
---|
2721 | * @handle: An #RsvgHandle |
---|
2722 | * |
---|
2723 | * Closes @handle, to indicate that loading the image is complete. This will |
---|
2724 | * return #TRUE if the loader closed successfully. Note that @handle isn't |
---|
2725 | * freed until @rsvg_handle_free is called. |
---|
2726 | * |
---|
2727 | * Return value: #TRUE if the loader closed successfully, or #FALSE if there was |
---|
2728 | * an error. |
---|
2729 | **/ |
---|
2730 | gboolean |
---|
2731 | rsvg_handle_close (RsvgHandle *handle, |
---|
2732 | GError **error) |
---|
2733 | { |
---|
2734 | gchar chars[1] = { '\0' }; |
---|
2735 | GError *real_error; |
---|
2736 | |
---|
2737 | handle->error = &real_error; |
---|
2738 | |
---|
2739 | if (handle->ctxt != NULL) |
---|
2740 | { |
---|
2741 | xmlParseChunk (handle->ctxt, chars, 1, TRUE); |
---|
2742 | xmlFreeParserCtxt (handle->ctxt); |
---|
2743 | } |
---|
2744 | |
---|
2745 | /* FIXME: Error handling not implemented. */ |
---|
2746 | /* |
---|
2747 | if (real_error != NULL) |
---|
2748 | { |
---|
2749 | g_propagate_error (error, real_error); |
---|
2750 | return FALSE; |
---|
2751 | }*/ |
---|
2752 | return TRUE; |
---|
2753 | } |
---|
2754 | |
---|
2755 | /** |
---|
2756 | * rsvg_handle_get_pixbuf: |
---|
2757 | * @handle: An #RsvgHandle |
---|
2758 | * |
---|
2759 | * Returns the pixbuf loaded by #handle. The pixbuf returned will be reffed, so |
---|
2760 | * the caller of this function must assume that ref. If insufficient data has |
---|
2761 | * been read to create the pixbuf, or an error occurred in loading, then %NULL |
---|
2762 | * will be returned. Note that the pixbuf may not be complete until |
---|
2763 | * @rsvg_handle_close has been called. |
---|
2764 | * |
---|
2765 | * Return value: the pixbuf loaded by #handle, or %NULL. |
---|
2766 | **/ |
---|
2767 | GdkPixbuf * |
---|
2768 | rsvg_handle_get_pixbuf (RsvgHandle *handle) |
---|
2769 | { |
---|
2770 | g_return_val_if_fail (handle != NULL, NULL); |
---|
2771 | |
---|
2772 | if (handle->pixbuf) |
---|
2773 | return g_object_ref (handle->pixbuf); |
---|
2774 | |
---|
2775 | return NULL; |
---|
2776 | } |
---|
2777 | |
---|
2778 | /** |
---|
2779 | * rsvg_handle_free: |
---|
2780 | * @handle: An #RsvgHandle |
---|
2781 | * |
---|
2782 | * Frees #handle. |
---|
2783 | **/ |
---|
2784 | void |
---|
2785 | rsvg_handle_free (RsvgHandle *handle) |
---|
2786 | { |
---|
2787 | int i; |
---|
2788 | |
---|
2789 | if (handle->pango_context != NULL) |
---|
2790 | g_object_unref (handle->pango_context); |
---|
2791 | rsvg_defs_free (handle->defs); |
---|
2792 | |
---|
2793 | for (i = 0; i < handle->n_state; i++) |
---|
2794 | rsvg_state_finalize (&handle->state[i]); |
---|
2795 | g_free (handle->state); |
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2796 | |
---|
2797 | g_hash_table_foreach (handle->entities, rsvg_ctx_free_helper, NULL); |
---|
2798 | g_hash_table_destroy (handle->entities); |
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2799 | |
---|
2800 | g_hash_table_destroy (handle->css_props); |
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2801 | |
---|
2802 | if (handle->user_data_destroy) |
---|
2803 | (* handle->user_data_destroy) (handle->user_data); |
---|
2804 | if (handle->pixbuf) |
---|
2805 | g_object_unref (handle->pixbuf); |
---|
2806 | g_free (handle); |
---|
2807 | } |
---|
2808 | |
---|
2809 | typedef enum { |
---|
2810 | RSVG_SIZE_ZOOM, |
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2811 | RSVG_SIZE_WH, |
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2812 | RSVG_SIZE_WH_MAX, |
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2813 | RSVG_SIZE_ZOOM_MAX |
---|
2814 | } RsvgSizeType; |
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2815 | |
---|
2816 | struct RsvgSizeCallbackData |
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2817 | { |
---|
2818 | RsvgSizeType type; |
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2819 | double x_zoom; |
---|
2820 | double y_zoom; |
---|
2821 | gint width; |
---|
2822 | gint height; |
---|
2823 | }; |
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2824 | |
---|
2825 | static void |
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2826 | rsvg_size_callback (int *width, |
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2827 | int *height, |
---|
2828 | gpointer data) |
---|
2829 | { |
---|
2830 | struct RsvgSizeCallbackData *real_data = (struct RsvgSizeCallbackData *) data; |
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2831 | double zoomx, zoomy, zoom; |
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2832 | |
---|
2833 | switch (real_data->type) { |
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2834 | case RSVG_SIZE_ZOOM: |
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2835 | if (*width < 0 || *height < 0) |
---|
2836 | return; |
---|
2837 | |
---|
2838 | *width = floor (real_data->x_zoom * *width + 0.5); |
---|
2839 | *height = floor (real_data->y_zoom * *height + 0.5); |
---|
2840 | return; |
---|
2841 | |
---|
2842 | case RSVG_SIZE_ZOOM_MAX: |
---|
2843 | if (*width < 0 || *height < 0) |
---|
2844 | return; |
---|
2845 | |
---|
2846 | *width = floor (real_data->x_zoom * *width + 0.5); |
---|
2847 | *height = floor (real_data->y_zoom * *height + 0.5); |
---|
2848 | |
---|
2849 | if (*width > real_data->width || *height > real_data->height) |
---|
2850 | { |
---|
2851 | zoomx = (double) real_data->width / *width; |
---|
2852 | zoomy = (double) real_data->height / *height; |
---|
2853 | zoom = MIN (zoomx, zoomy); |
---|
2854 | |
---|
2855 | *width = floor (zoom * *width + 0.5); |
---|
2856 | *height = floor (zoom * *height + 0.5); |
---|
2857 | } |
---|
2858 | return; |
---|
2859 | |
---|
2860 | case RSVG_SIZE_WH_MAX: |
---|
2861 | if (*width < 0 || *height < 0) |
---|
2862 | return; |
---|
2863 | |
---|
2864 | zoomx = (double) real_data->width / *width; |
---|
2865 | zoomy = (double) real_data->height / *height; |
---|
2866 | zoom = MIN (zoomx, zoomy); |
---|
2867 | |
---|
2868 | *width = floor (zoom * *width + 0.5); |
---|
2869 | *height = floor (zoom * *height + 0.5); |
---|
2870 | return; |
---|
2871 | |
---|
2872 | case RSVG_SIZE_WH: |
---|
2873 | |
---|
2874 | if (real_data->width != -1) |
---|
2875 | *width = real_data->width; |
---|
2876 | if (real_data->height != -1) |
---|
2877 | *height = real_data->height; |
---|
2878 | return; |
---|
2879 | } |
---|
2880 | |
---|
2881 | g_assert_not_reached (); |
---|
2882 | } |
---|
2883 | |
---|
2884 | static GdkPixbuf * |
---|
2885 | rsvg_pixbuf_from_file_with_size_data (const gchar * file_name, |
---|
2886 | struct RsvgSizeCallbackData * data, |
---|
2887 | GError ** error) |
---|
2888 | { |
---|
2889 | char chars[SVG_BUFFER_SIZE]; |
---|
2890 | gint result; |
---|
2891 | GdkPixbuf *retval; |
---|
2892 | RsvgHandle *handle; |
---|
2893 | |
---|
2894 | #if ENABLE_GNOME_VFS |
---|
2895 | GnomeVFSHandle * f = NULL; |
---|
2896 | if (GNOME_VFS_OK != gnome_vfs_open (&handle, file_name, GNOME_VFS_OPEN_READ)) |
---|
2897 | { |
---|
2898 | /* FIXME: Set up error. */ |
---|
2899 | return NULL; |
---|
2900 | } |
---|
2901 | #else |
---|
2902 | FILE *f = fopen (file_name, "r"); |
---|
2903 | if (!f) |
---|
2904 | { |
---|
2905 | /* FIXME: Set up error. */ |
---|
2906 | return NULL; |
---|
2907 | } |
---|
2908 | #endif |
---|
2909 | |
---|
2910 | handle = rsvg_handle_new (); |
---|
2911 | |
---|
2912 | rsvg_handle_set_size_callback (handle, rsvg_size_callback, data, NULL); |
---|
2913 | |
---|
2914 | #if ENABLE_GNOME_VFS |
---|
2915 | while (GNOME_VFS_OK == gnome_vfs_read (f,chars, SVG_BUFFER_SIZE, &result)) |
---|
2916 | rsvg_handle_write (handle, chars, result, error); |
---|
2917 | #else |
---|
2918 | while ((result = fread (chars, 1, SVG_BUFFER_SIZE, f)) > 0) |
---|
2919 | rsvg_handle_write (handle, chars, result, error); |
---|
2920 | #endif |
---|
2921 | |
---|
2922 | rsvg_handle_close (handle, error); |
---|
2923 | retval = rsvg_handle_get_pixbuf (handle); |
---|
2924 | |
---|
2925 | #if ENABLE_GNOME_VFS |
---|
2926 | gnome_vfs_close (f); |
---|
2927 | #else |
---|
2928 | fclose (f); |
---|
2929 | #endif |
---|
2930 | |
---|
2931 | rsvg_handle_free (handle); |
---|
2932 | |
---|
2933 | return retval; |
---|
2934 | } |
---|
2935 | |
---|
2936 | /** |
---|
2937 | * rsvg_pixbuf_from_file: |
---|
2938 | * @file_name: A file name |
---|
2939 | * @error: return location for errors |
---|
2940 | * |
---|
2941 | * Loads a new #GdkPixbuf from @file_name and returns it. The caller must |
---|
2942 | * assume the reference to the reurned pixbuf. If an error occurred, @error is |
---|
2943 | * set and %NULL is returned. |
---|
2944 | * |
---|
2945 | * Return value: A newly allocated #GdkPixbuf, or %NULL |
---|
2946 | **/ |
---|
2947 | GdkPixbuf * |
---|
2948 | rsvg_pixbuf_from_file (const gchar *file_name, |
---|
2949 | GError **error) |
---|
2950 | { |
---|
2951 | return rsvg_pixbuf_from_file_at_size (file_name, -1, -1, error); |
---|
2952 | } |
---|
2953 | |
---|
2954 | /** |
---|
2955 | * rsvg_pixbuf_from_file_at_zoom: |
---|
2956 | * @file_name: A file name |
---|
2957 | * @x_zoom: The horizontal zoom factor |
---|
2958 | * @y_zoom: The vertical zoom factor |
---|
2959 | * @error: return location for errors |
---|
2960 | * |
---|
2961 | * Loads a new #GdkPixbuf from @file_name and returns it. This pixbuf is scaled |
---|
2962 | * from the size indicated by the file by a factor of @x_zoom and @y_zoom. The |
---|
2963 | * caller must assume the reference to the returned pixbuf. If an error |
---|
2964 | * occurred, @error is set and %NULL is returned. |
---|
2965 | * |
---|
2966 | * Return value: A newly allocated #GdkPixbuf, or %NULL |
---|
2967 | **/ |
---|
2968 | GdkPixbuf * |
---|
2969 | rsvg_pixbuf_from_file_at_zoom (const gchar *file_name, |
---|
2970 | double x_zoom, |
---|
2971 | double y_zoom, |
---|
2972 | GError **error) |
---|
2973 | { |
---|
2974 | struct RsvgSizeCallbackData data; |
---|
2975 | |
---|
2976 | g_return_val_if_fail (file_name != NULL, NULL); |
---|
2977 | g_return_val_if_fail (x_zoom > 0.0 && y_zoom > 0.0, NULL); |
---|
2978 | |
---|
2979 | data.type = RSVG_SIZE_ZOOM; |
---|
2980 | data.x_zoom = x_zoom; |
---|
2981 | data.y_zoom = y_zoom; |
---|
2982 | |
---|
2983 | return rsvg_pixbuf_from_file_with_size_data (file_name, &data, error); |
---|
2984 | } |
---|
2985 | |
---|
2986 | /** |
---|
2987 | * rsvg_pixbuf_from_file_at_zoom_with_max: |
---|
2988 | * @file_name: A file name |
---|
2989 | * @x_zoom: The horizontal zoom factor |
---|
2990 | * @y_zoom: The vertical zoom factor |
---|
2991 | * @max_width: The requested max width |
---|
2992 | * @max_height: The requested max heigh |
---|
2993 | * @error: return location for errors |
---|
2994 | * |
---|
2995 | * Loads a new #GdkPixbuf from @file_name and returns it. This pixbuf is scaled |
---|
2996 | * from the size indicated by the file by a factor of @x_zoom and @y_zoom. If the |
---|
2997 | * resulting pixbuf would be larger than max_width/max_heigh it is uniformly scaled |
---|
2998 | * down to fit in that rectangle. The caller must assume the reference to the |
---|
2999 | * returned pixbuf. If an error occurred, @error is set and %NULL is returned. |
---|
3000 | * |
---|
3001 | * Return value: A newly allocated #GdkPixbuf, or %NULL |
---|
3002 | **/ |
---|
3003 | GdkPixbuf * |
---|
3004 | rsvg_pixbuf_from_file_at_zoom_with_max (const gchar *file_name, |
---|
3005 | double x_zoom, |
---|
3006 | double y_zoom, |
---|
3007 | gint max_width, |
---|
3008 | gint max_height, |
---|
3009 | GError **error) |
---|
3010 | { |
---|
3011 | struct RsvgSizeCallbackData data; |
---|
3012 | |
---|
3013 | g_return_val_if_fail (file_name != NULL, NULL); |
---|
3014 | g_return_val_if_fail (x_zoom > 0.0 && y_zoom > 0.0, NULL); |
---|
3015 | |
---|
3016 | data.type = RSVG_SIZE_ZOOM_MAX; |
---|
3017 | data.x_zoom = x_zoom; |
---|
3018 | data.y_zoom = y_zoom; |
---|
3019 | data.width = max_width; |
---|
3020 | data.height = max_height; |
---|
3021 | |
---|
3022 | return rsvg_pixbuf_from_file_with_size_data (file_name, &data, error); |
---|
3023 | } |
---|
3024 | |
---|
3025 | /** |
---|
3026 | * rsvg_pixbuf_from_file_at_size: |
---|
3027 | * @file_name: A file name |
---|
3028 | * @width: The new width, or -1 |
---|
3029 | * @height: The new height, or -1 |
---|
3030 | * @error: return location for errors |
---|
3031 | * |
---|
3032 | * Loads a new #GdkPixbuf from @file_name and returns it. This pixbuf is scaled |
---|
3033 | * from the size indicated to the new size indicated by @width and @height. If |
---|
3034 | * either of these are -1, then the default size of the image being loaded is |
---|
3035 | * used. The caller must assume the reference to the returned pixbuf. If an |
---|
3036 | * error occurred, @error is set and %NULL is returned. |
---|
3037 | * |
---|
3038 | * Return value: A newly allocated #GdkPixbuf, or %NULL |
---|
3039 | **/ |
---|
3040 | GdkPixbuf * |
---|
3041 | rsvg_pixbuf_from_file_at_size (const gchar *file_name, |
---|
3042 | gint width, |
---|
3043 | gint height, |
---|
3044 | GError **error) |
---|
3045 | { |
---|
3046 | struct RsvgSizeCallbackData data; |
---|
3047 | |
---|
3048 | data.type = RSVG_SIZE_WH; |
---|
3049 | data.width = width; |
---|
3050 | data.height = height; |
---|
3051 | |
---|
3052 | return rsvg_pixbuf_from_file_with_size_data (file_name, &data, error); |
---|
3053 | } |
---|
3054 | |
---|
3055 | /** |
---|
3056 | * rsvg_pixbuf_from_file_at_max_size: |
---|
3057 | * @file_name: A file name |
---|
3058 | * @max_width: The requested max width |
---|
3059 | * @max_height: The requested max heigh |
---|
3060 | * @error: return location for errors |
---|
3061 | * |
---|
3062 | * Loads a new #GdkPixbuf from @file_name and returns it. This pixbuf is uniformly |
---|
3063 | * scaled so that the it fits into a rectangle of size max_width * max_height. The |
---|
3064 | * caller must assume the reference to the returned pixbuf. If an error occurred, |
---|
3065 | * @error is set and %NULL is returned. |
---|
3066 | * |
---|
3067 | * Return value: A newly allocated #GdkPixbuf, or %NULL |
---|
3068 | **/ |
---|
3069 | GdkPixbuf * |
---|
3070 | rsvg_pixbuf_from_file_at_max_size (const gchar *file_name, |
---|
3071 | gint max_width, |
---|
3072 | gint max_height, |
---|
3073 | GError **error) |
---|
3074 | { |
---|
3075 | struct RsvgSizeCallbackData data; |
---|
3076 | |
---|
3077 | data.type = RSVG_SIZE_WH_MAX; |
---|
3078 | data.width = max_width; |
---|
3079 | data.height = max_height; |
---|
3080 | |
---|
3081 | return rsvg_pixbuf_from_file_with_size_data (file_name, &data, error); |
---|
3082 | } |
---|