[18274] | 1 | /* |
---|
[17276] | 2 | rsvg.c: SAX-based renderer for SVG files into a GdkPixbuf. |
---|
[18274] | 3 | |
---|
[17276] | 4 | Copyright (C) 2000 Eazel, Inc. |
---|
[18274] | 5 | |
---|
[17276] | 6 | This program is free software; you can redistribute it and/or |
---|
[18274] | 7 | modify it under the terms of the GNU Library General Public License as |
---|
[17276] | 8 | published by the Free Software Foundation; either version 2 of the |
---|
| 9 | License, or (at your option) any later version. |
---|
[18274] | 10 | |
---|
[17276] | 11 | This program is distributed in the hope that it will be useful, |
---|
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
[18274] | 14 | Library General Public License for more details. |
---|
| 15 | |
---|
| 16 | You should have received a copy of the GNU Library General Public |
---|
[17276] | 17 | License along with this program; if not, write to the |
---|
| 18 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
---|
| 19 | Boston, MA 02111-1307, USA. |
---|
[18274] | 20 | |
---|
[17276] | 21 | Author: Raph Levien <raph@artofcode.com> |
---|
| 22 | */ |
---|
| 23 | |
---|
[18274] | 24 | #include "config.h" |
---|
[17276] | 25 | #include "rsvg.h" |
---|
| 26 | |
---|
[18274] | 27 | #include <math.h> |
---|
[17276] | 28 | #include <string.h> |
---|
[18274] | 29 | #include <stdarg.h> |
---|
[17276] | 30 | |
---|
| 31 | #include <libart_lgpl/art_affine.h> |
---|
| 32 | #include <libart_lgpl/art_vpath_bpath.h> |
---|
| 33 | #include <libart_lgpl/art_svp_vpath_stroke.h> |
---|
| 34 | #include <libart_lgpl/art_svp_vpath.h> |
---|
[18274] | 35 | #include <libart_lgpl/art_svp_intersect.h> |
---|
| 36 | #include <libart_lgpl/art_render_mask.h> |
---|
| 37 | #include <libart_lgpl/art_render_svp.h> |
---|
| 38 | #include <libart_lgpl/art_rgba.h> |
---|
[17276] | 39 | |
---|
[18274] | 40 | #include <libxml/SAX.h> |
---|
| 41 | #include <libxml/xmlmemory.h> |
---|
[17276] | 42 | |
---|
[18274] | 43 | #include <pango/pangoft2.h> |
---|
[17276] | 44 | |
---|
| 45 | #include "rsvg-bpath-util.h" |
---|
| 46 | #include "rsvg-path.h" |
---|
| 47 | #include "rsvg-css.h" |
---|
| 48 | #include "rsvg-paint-server.h" |
---|
| 49 | |
---|
[18351] | 50 | #define noVERBOSE |
---|
| 51 | |
---|
[18274] | 52 | #define SVG_BUFFER_SIZE (1024 * 8) |
---|
[17276] | 53 | |
---|
[18274] | 54 | typedef struct { |
---|
[17276] | 55 | double affine[6]; |
---|
| 56 | |
---|
| 57 | gint opacity; /* 0..255 */ |
---|
| 58 | |
---|
| 59 | RsvgPaintServer *fill; |
---|
| 60 | gint fill_opacity; /* 0..255 */ |
---|
| 61 | |
---|
| 62 | RsvgPaintServer *stroke; |
---|
| 63 | gint stroke_opacity; /* 0..255 */ |
---|
| 64 | double stroke_width; |
---|
| 65 | |
---|
| 66 | ArtPathStrokeCapType cap; |
---|
| 67 | ArtPathStrokeJoinType join; |
---|
| 68 | |
---|
| 69 | double font_size; |
---|
[18274] | 70 | char *font_family; |
---|
[17276] | 71 | |
---|
| 72 | guint32 stop_color; /* rgb */ |
---|
| 73 | gint stop_opacity; /* 0..255 */ |
---|
| 74 | |
---|
[18351] | 75 | gboolean in_defs; |
---|
[17276] | 76 | |
---|
| 77 | GdkPixbuf *save_pixbuf; |
---|
[18274] | 78 | } RsvgState; |
---|
[17276] | 79 | |
---|
[18274] | 80 | typedef struct RsvgSaxHandler RsvgSaxHandler; |
---|
| 81 | |
---|
| 82 | struct RsvgSaxHandler { |
---|
[17276] | 83 | void (*free) (RsvgSaxHandler *self); |
---|
| 84 | void (*start_element) (RsvgSaxHandler *self, const xmlChar *name, const xmlChar **atts); |
---|
| 85 | void (*end_element) (RsvgSaxHandler *self, const xmlChar *name); |
---|
| 86 | void (*characters) (RsvgSaxHandler *self, const xmlChar *ch, int len); |
---|
| 87 | }; |
---|
| 88 | |
---|
[18274] | 89 | struct RsvgHandle { |
---|
| 90 | RsvgSizeFunc size_func; |
---|
| 91 | gpointer user_data; |
---|
| 92 | GDestroyNotify user_data_destroy; |
---|
| 93 | GdkPixbuf *pixbuf; |
---|
[17276] | 94 | |
---|
[18274] | 95 | /* stack; there is a state for each element */ |
---|
| 96 | RsvgState *state; |
---|
| 97 | int n_state; |
---|
| 98 | int n_state_max; |
---|
| 99 | |
---|
| 100 | RsvgDefs *defs; |
---|
| 101 | |
---|
[18351] | 102 | RsvgSaxHandler *handler; /* should this be a handler stack? */ |
---|
[18274] | 103 | int handler_nest; |
---|
| 104 | |
---|
| 105 | GHashTable *entities; /* g_malloc'd string -> xmlEntityPtr */ |
---|
| 106 | |
---|
| 107 | PangoContext *pango_context; |
---|
| 108 | xmlParserCtxtPtr ctxt; |
---|
| 109 | GError **error; |
---|
| 110 | }; |
---|
| 111 | |
---|
[17276] | 112 | static void |
---|
| 113 | rsvg_state_init (RsvgState *state) |
---|
| 114 | { |
---|
| 115 | memset (state, 0, sizeof (*state)); |
---|
| 116 | |
---|
| 117 | art_affine_identity (state->affine); |
---|
| 118 | |
---|
| 119 | state->opacity = 0xff; |
---|
| 120 | state->fill = rsvg_paint_server_parse (NULL, "#000"); |
---|
| 121 | state->fill_opacity = 0xff; |
---|
| 122 | state->stroke_opacity = 0xff; |
---|
| 123 | state->stroke_width = 1; |
---|
| 124 | state->cap = ART_PATH_STROKE_CAP_BUTT; |
---|
| 125 | state->join = ART_PATH_STROKE_JOIN_MITER; |
---|
| 126 | state->stop_opacity = 0xff; |
---|
| 127 | } |
---|
| 128 | |
---|
| 129 | static void |
---|
| 130 | rsvg_state_clone (RsvgState *dst, const RsvgState *src) |
---|
| 131 | { |
---|
| 132 | *dst = *src; |
---|
[18274] | 133 | dst->font_family = g_strdup (src->font_family); |
---|
[17276] | 134 | rsvg_paint_server_ref (dst->fill); |
---|
| 135 | rsvg_paint_server_ref (dst->stroke); |
---|
| 136 | dst->save_pixbuf = NULL; |
---|
| 137 | } |
---|
| 138 | |
---|
| 139 | static void |
---|
| 140 | rsvg_state_finalize (RsvgState *state) |
---|
| 141 | { |
---|
[18274] | 142 | g_free (state->font_family); |
---|
[17276] | 143 | rsvg_paint_server_unref (state->fill); |
---|
| 144 | rsvg_paint_server_unref (state->stroke); |
---|
| 145 | } |
---|
| 146 | |
---|
| 147 | static void |
---|
| 148 | rsvg_ctx_free_helper (gpointer key, gpointer value, gpointer user_data) |
---|
| 149 | { |
---|
| 150 | xmlEntityPtr entval = (xmlEntityPtr)value; |
---|
| 151 | |
---|
| 152 | /* key == entval->name, so it's implicitly freed below */ |
---|
| 153 | |
---|
[18274] | 154 | g_free ((char *) entval->name); |
---|
| 155 | g_free ((char *) entval->ExternalID); |
---|
| 156 | g_free ((char *) entval->SystemID); |
---|
[17276] | 157 | xmlFree (entval->content); |
---|
| 158 | xmlFree (entval->orig); |
---|
| 159 | g_free (entval); |
---|
| 160 | } |
---|
| 161 | |
---|
| 162 | static void |
---|
| 163 | rsvg_pixmap_destroy (guchar *pixels, gpointer data) |
---|
| 164 | { |
---|
| 165 | g_free (pixels); |
---|
| 166 | } |
---|
| 167 | |
---|
| 168 | static void |
---|
[18274] | 169 | rsvg_start_svg (RsvgHandle *ctx, const xmlChar **atts) |
---|
[17276] | 170 | { |
---|
| 171 | int i; |
---|
[18351] | 172 | int width = -1, height = -1; |
---|
[17276] | 173 | int rowstride; |
---|
| 174 | art_u8 *pixels; |
---|
[18351] | 175 | gint fixed; |
---|
[17276] | 176 | RsvgState *state; |
---|
[18351] | 177 | gboolean has_alpha = 1; |
---|
[18274] | 178 | gint new_width, new_height; |
---|
[18351] | 179 | double x_zoom; |
---|
| 180 | double y_zoom; |
---|
[17276] | 181 | |
---|
| 182 | if (atts != NULL) |
---|
| 183 | { |
---|
| 184 | for (i = 0; atts[i] != NULL; i += 2) |
---|
| 185 | { |
---|
| 186 | if (!strcmp ((char *)atts[i], "width")) |
---|
[18351] | 187 | width = rsvg_css_parse_length ((char *)atts[i + 1], &fixed); |
---|
| 188 | else if (!strcmp ((char *)atts[i], "height")) |
---|
| 189 | height = rsvg_css_parse_length ((char *)atts[i + 1], &fixed); |
---|
[17276] | 190 | } |
---|
| 191 | |
---|
[18351] | 192 | #ifdef VERBOSE |
---|
| 193 | fprintf (stdout, "rsvg_start_svg: width = %d, height = %d\n", |
---|
| 194 | width, height); |
---|
| 195 | #endif |
---|
[18274] | 196 | |
---|
[18351] | 197 | if (width == 0 || height == 0) |
---|
| 198 | { |
---|
| 199 | /* FIXME: GError here? */ |
---|
| 200 | g_warning ("rsvg_start_svg: can't render 0-sized SVG"); |
---|
| 201 | return; |
---|
| 202 | } |
---|
[17276] | 203 | |
---|
[18351] | 204 | new_width = width; |
---|
| 205 | new_height = height; |
---|
| 206 | if (ctx->size_func) |
---|
| 207 | (* ctx->size_func) (&new_width, &new_height, ctx->user_data); |
---|
[18274] | 208 | |
---|
[18351] | 209 | if (new_width == 0 || new_height == 0) |
---|
[18274] | 210 | { |
---|
[18351] | 211 | /* FIXME: GError here? */ |
---|
| 212 | g_warning ("rsvg_start_svg: can't render 0-sized SVG"); |
---|
| 213 | return; |
---|
[18274] | 214 | } |
---|
| 215 | |
---|
[18351] | 216 | x_zoom = (width < 0 || new_width < 0) ? 1 : (double) new_width / width; |
---|
| 217 | y_zoom = (height < 0 || new_height < 0) ? 1 : (double) new_height / height; |
---|
[18274] | 218 | |
---|
[17276] | 219 | /* Scale size of target pixbuf */ |
---|
| 220 | state = &ctx->state[ctx->n_state - 1]; |
---|
[18274] | 221 | art_affine_scale (state->affine, x_zoom, y_zoom); |
---|
[17276] | 222 | |
---|
[18274] | 223 | if (new_width < 0 || new_height < 0) |
---|
| 224 | { |
---|
| 225 | g_warning ("rsvg_start_svg: width and height not specified in the SVG, nor supplied by the size callback"); |
---|
| 226 | if (new_width < 0) new_width = 500; |
---|
| 227 | if (new_height < 0) new_height = 500; |
---|
| 228 | } |
---|
| 229 | |
---|
| 230 | if (new_width >= INT_MAX / 4) |
---|
| 231 | { |
---|
| 232 | /* FIXME: GError here? */ |
---|
| 233 | g_warning ("rsvg_start_svg: width too large"); |
---|
| 234 | return; |
---|
| 235 | } |
---|
| 236 | rowstride = (new_width * (has_alpha ? 4 : 3) + 3) & ~3; |
---|
| 237 | if (rowstride > INT_MAX / new_height) |
---|
| 238 | { |
---|
| 239 | /* FIXME: GError here? */ |
---|
| 240 | g_warning ("rsvg_start_svg: width too large"); |
---|
| 241 | return; |
---|
| 242 | } |
---|
| 243 | |
---|
| 244 | /* FIXME: Add GError here if size is too big. */ |
---|
| 245 | |
---|
| 246 | pixels = g_try_malloc (rowstride * new_height); |
---|
| 247 | if (pixels == NULL) |
---|
| 248 | { |
---|
| 249 | /* FIXME: GError here? */ |
---|
| 250 | g_warning ("rsvg_start_svg: dimensions too large"); |
---|
| 251 | return; |
---|
| 252 | } |
---|
| 253 | memset (pixels, has_alpha ? 0 : 255, rowstride * new_height); |
---|
[17276] | 254 | ctx->pixbuf = gdk_pixbuf_new_from_data (pixels, |
---|
| 255 | GDK_COLORSPACE_RGB, |
---|
| 256 | has_alpha, 8, |
---|
[18274] | 257 | new_width, new_height, |
---|
[17276] | 258 | rowstride, |
---|
| 259 | rsvg_pixmap_destroy, |
---|
| 260 | NULL); |
---|
| 261 | } |
---|
| 262 | } |
---|
| 263 | |
---|
| 264 | /* Parse a CSS2 style argument, setting the SVG context attributes. */ |
---|
| 265 | static void |
---|
[18274] | 266 | rsvg_parse_style_arg (RsvgHandle *ctx, RsvgState *state, const char *str) |
---|
[17276] | 267 | { |
---|
| 268 | int arg_off; |
---|
| 269 | |
---|
| 270 | arg_off = rsvg_css_param_arg_offset (str); |
---|
| 271 | if (rsvg_css_param_match (str, "opacity")) |
---|
| 272 | { |
---|
| 273 | state->opacity = rsvg_css_parse_opacity (str + arg_off); |
---|
| 274 | } |
---|
| 275 | else if (rsvg_css_param_match (str, "fill")) |
---|
| 276 | { |
---|
| 277 | rsvg_paint_server_unref (state->fill); |
---|
| 278 | state->fill = rsvg_paint_server_parse (ctx->defs, str + arg_off); |
---|
| 279 | } |
---|
| 280 | else if (rsvg_css_param_match (str, "fill-opacity")) |
---|
| 281 | { |
---|
| 282 | state->fill_opacity = rsvg_css_parse_opacity (str + arg_off); |
---|
| 283 | } |
---|
| 284 | else if (rsvg_css_param_match (str, "stroke")) |
---|
| 285 | { |
---|
| 286 | rsvg_paint_server_unref (state->stroke); |
---|
| 287 | state->stroke = rsvg_paint_server_parse (ctx->defs, str + arg_off); |
---|
| 288 | } |
---|
| 289 | else if (rsvg_css_param_match (str, "stroke-width")) |
---|
| 290 | { |
---|
[18351] | 291 | int fixed; |
---|
| 292 | state->stroke_width = rsvg_css_parse_length (str + arg_off, &fixed); |
---|
[17276] | 293 | } |
---|
| 294 | else if (rsvg_css_param_match (str, "stroke-linecap")) |
---|
| 295 | { |
---|
| 296 | if (!strcmp (str + arg_off, "butt")) |
---|
| 297 | state->cap = ART_PATH_STROKE_CAP_BUTT; |
---|
| 298 | else if (!strcmp (str + arg_off, "round")) |
---|
| 299 | state->cap = ART_PATH_STROKE_CAP_ROUND; |
---|
| 300 | else if (!strcmp (str + arg_off, "square")) |
---|
| 301 | state->cap = ART_PATH_STROKE_CAP_SQUARE; |
---|
| 302 | else |
---|
| 303 | g_warning ("unknown line cap style %s", str + arg_off); |
---|
| 304 | } |
---|
| 305 | else if (rsvg_css_param_match (str, "stroke-opacity")) |
---|
| 306 | { |
---|
| 307 | state->stroke_opacity = rsvg_css_parse_opacity (str + arg_off); |
---|
| 308 | } |
---|
| 309 | else if (rsvg_css_param_match (str, "stroke-linejoin")) |
---|
| 310 | { |
---|
| 311 | if (!strcmp (str + arg_off, "miter")) |
---|
| 312 | state->join = ART_PATH_STROKE_JOIN_MITER; |
---|
| 313 | else if (!strcmp (str + arg_off, "round")) |
---|
| 314 | state->join = ART_PATH_STROKE_JOIN_ROUND; |
---|
| 315 | else if (!strcmp (str + arg_off, "bevel")) |
---|
| 316 | state->join = ART_PATH_STROKE_JOIN_BEVEL; |
---|
| 317 | else |
---|
| 318 | g_warning ("unknown line join style %s", str + arg_off); |
---|
| 319 | } |
---|
| 320 | else if (rsvg_css_param_match (str, "font-size")) |
---|
| 321 | { |
---|
[18351] | 322 | state->font_size = rsvg_css_parse_fontsize (str + arg_off); |
---|
[17276] | 323 | } |
---|
| 324 | else if (rsvg_css_param_match (str, "font-family")) |
---|
| 325 | { |
---|
[18274] | 326 | g_free (state->font_family); |
---|
| 327 | state->font_family = g_strdup (str + arg_off); |
---|
[17276] | 328 | } |
---|
| 329 | else if (rsvg_css_param_match (str, "stop-color")) |
---|
| 330 | { |
---|
| 331 | state->stop_color = rsvg_css_parse_color (str + arg_off); |
---|
| 332 | } |
---|
| 333 | else if (rsvg_css_param_match (str, "stop-opacity")) |
---|
| 334 | { |
---|
| 335 | state->stop_opacity = rsvg_css_parse_opacity (str + arg_off); |
---|
| 336 | } |
---|
| 337 | } |
---|
| 338 | |
---|
| 339 | /* Split a CSS2 style into individual style arguments, setting attributes |
---|
| 340 | in the SVG context. |
---|
| 341 | |
---|
| 342 | It's known that this is _way_ out of spec. A more complete CSS2 |
---|
| 343 | implementation will happen later. |
---|
| 344 | */ |
---|
| 345 | static void |
---|
[18274] | 346 | rsvg_parse_style (RsvgHandle *ctx, RsvgState *state, const char *str) |
---|
[17276] | 347 | { |
---|
| 348 | int start, end; |
---|
| 349 | char *arg; |
---|
| 350 | |
---|
| 351 | start = 0; |
---|
| 352 | while (str[start] != '\0') |
---|
| 353 | { |
---|
| 354 | for (end = start; str[end] != '\0' && str[end] != ';'; end++); |
---|
| 355 | arg = g_new (char, 1 + end - start); |
---|
| 356 | memcpy (arg, str + start, end - start); |
---|
| 357 | arg[end - start] = '\0'; |
---|
| 358 | rsvg_parse_style_arg (ctx, state, arg); |
---|
| 359 | g_free (arg); |
---|
| 360 | start = end; |
---|
| 361 | if (str[start] == ';') start++; |
---|
| 362 | while (str[start] == ' ') start++; |
---|
| 363 | } |
---|
| 364 | } |
---|
| 365 | |
---|
| 366 | /* Parse an SVG transform string into an affine matrix. Reference: SVG |
---|
| 367 | working draft dated 1999-07-06, section 8.5. Return TRUE on |
---|
| 368 | success. */ |
---|
| 369 | static gboolean |
---|
| 370 | rsvg_parse_transform (double dst[6], const char *src) |
---|
| 371 | { |
---|
| 372 | int idx; |
---|
| 373 | char keyword[32]; |
---|
| 374 | double args[6]; |
---|
| 375 | int n_args; |
---|
| 376 | guint key_len; |
---|
| 377 | double tmp_affine[6]; |
---|
| 378 | |
---|
| 379 | art_affine_identity (dst); |
---|
| 380 | |
---|
| 381 | idx = 0; |
---|
| 382 | while (src[idx]) |
---|
| 383 | { |
---|
| 384 | /* skip initial whitespace */ |
---|
[18274] | 385 | while (g_ascii_isspace (src[idx])) |
---|
[17276] | 386 | idx++; |
---|
| 387 | |
---|
| 388 | /* parse keyword */ |
---|
| 389 | for (key_len = 0; key_len < sizeof (keyword); key_len++) |
---|
| 390 | { |
---|
| 391 | char c; |
---|
| 392 | |
---|
| 393 | c = src[idx]; |
---|
[18274] | 394 | if (g_ascii_isalpha (c) || c == '-') |
---|
[17276] | 395 | keyword[key_len] = src[idx++]; |
---|
| 396 | else |
---|
| 397 | break; |
---|
| 398 | } |
---|
| 399 | if (key_len >= sizeof (keyword)) |
---|
| 400 | return FALSE; |
---|
| 401 | keyword[key_len] = '\0'; |
---|
| 402 | |
---|
| 403 | /* skip whitespace */ |
---|
[18274] | 404 | while (g_ascii_isspace (src[idx])) |
---|
[17276] | 405 | idx++; |
---|
| 406 | |
---|
| 407 | if (src[idx] != '(') |
---|
| 408 | return FALSE; |
---|
| 409 | idx++; |
---|
| 410 | |
---|
| 411 | for (n_args = 0; ; n_args++) |
---|
| 412 | { |
---|
| 413 | char c; |
---|
| 414 | char *end_ptr; |
---|
| 415 | |
---|
| 416 | /* skip whitespace */ |
---|
[18274] | 417 | while (g_ascii_isspace (src[idx])) |
---|
[17276] | 418 | idx++; |
---|
| 419 | c = src[idx]; |
---|
[18274] | 420 | if (g_ascii_isdigit (c) || c == '+' || c == '-' || c == '.') |
---|
[17276] | 421 | { |
---|
| 422 | if (n_args == sizeof(args) / sizeof(args[0])) |
---|
| 423 | return FALSE; /* too many args */ |
---|
[18351] | 424 | args[n_args] = strtod (src + idx, &end_ptr); |
---|
[17276] | 425 | idx = end_ptr - src; |
---|
| 426 | |
---|
[18274] | 427 | while (g_ascii_isspace (src[idx])) |
---|
[17276] | 428 | idx++; |
---|
| 429 | |
---|
| 430 | /* skip optional comma */ |
---|
| 431 | if (src[idx] == ',') |
---|
| 432 | idx++; |
---|
| 433 | } |
---|
| 434 | else if (c == ')') |
---|
| 435 | break; |
---|
| 436 | else |
---|
| 437 | return FALSE; |
---|
| 438 | } |
---|
| 439 | idx++; |
---|
| 440 | |
---|
| 441 | /* ok, have parsed keyword and args, now modify the transform */ |
---|
| 442 | if (!strcmp (keyword, "matrix")) |
---|
| 443 | { |
---|
| 444 | if (n_args != 6) |
---|
| 445 | return FALSE; |
---|
| 446 | art_affine_multiply (dst, args, dst); |
---|
| 447 | } |
---|
| 448 | else if (!strcmp (keyword, "translate")) |
---|
| 449 | { |
---|
| 450 | if (n_args == 1) |
---|
| 451 | args[1] = 0; |
---|
| 452 | else if (n_args != 2) |
---|
| 453 | return FALSE; |
---|
| 454 | art_affine_translate (tmp_affine, args[0], args[1]); |
---|
| 455 | art_affine_multiply (dst, tmp_affine, dst); |
---|
| 456 | } |
---|
| 457 | else if (!strcmp (keyword, "scale")) |
---|
| 458 | { |
---|
| 459 | if (n_args == 1) |
---|
| 460 | args[1] = args[0]; |
---|
| 461 | else if (n_args != 2) |
---|
| 462 | return FALSE; |
---|
| 463 | art_affine_scale (tmp_affine, args[0], args[1]); |
---|
| 464 | art_affine_multiply (dst, tmp_affine, dst); |
---|
| 465 | } |
---|
| 466 | else if (!strcmp (keyword, "rotate")) |
---|
| 467 | { |
---|
| 468 | if (n_args != 1) |
---|
| 469 | return FALSE; |
---|
| 470 | art_affine_rotate (tmp_affine, args[0]); |
---|
| 471 | art_affine_multiply (dst, tmp_affine, dst); |
---|
| 472 | } |
---|
| 473 | else if (!strcmp (keyword, "skewX")) |
---|
| 474 | { |
---|
| 475 | if (n_args != 1) |
---|
| 476 | return FALSE; |
---|
| 477 | art_affine_shear (tmp_affine, args[0]); |
---|
| 478 | art_affine_multiply (dst, tmp_affine, dst); |
---|
| 479 | } |
---|
| 480 | else if (!strcmp (keyword, "skewY")) |
---|
| 481 | { |
---|
| 482 | if (n_args != 1) |
---|
| 483 | return FALSE; |
---|
| 484 | art_affine_shear (tmp_affine, args[0]); |
---|
| 485 | /* transpose the affine, given that we know [1] is zero */ |
---|
| 486 | tmp_affine[1] = tmp_affine[2]; |
---|
| 487 | tmp_affine[2] = 0; |
---|
| 488 | art_affine_multiply (dst, tmp_affine, dst); |
---|
| 489 | } |
---|
| 490 | else |
---|
| 491 | return FALSE; /* unknown keyword */ |
---|
| 492 | } |
---|
| 493 | return TRUE; |
---|
| 494 | } |
---|
| 495 | |
---|
| 496 | /** |
---|
| 497 | * rsvg_parse_transform_attr: Parse transform attribute and apply to state. |
---|
| 498 | * @ctx: Rsvg context. |
---|
| 499 | * @state: State in which to apply the transform. |
---|
| 500 | * @str: String containing transform. |
---|
| 501 | * |
---|
| 502 | * Parses the transform attribute in @str and applies it to @state. |
---|
| 503 | **/ |
---|
| 504 | static void |
---|
[18274] | 505 | rsvg_parse_transform_attr (RsvgHandle *ctx, RsvgState *state, const char *str) |
---|
[17276] | 506 | { |
---|
| 507 | double affine[6]; |
---|
| 508 | |
---|
| 509 | if (rsvg_parse_transform (affine, str)) |
---|
| 510 | { |
---|
| 511 | art_affine_multiply (state->affine, affine, state->affine); |
---|
| 512 | } |
---|
| 513 | else |
---|
| 514 | { |
---|
| 515 | /* parse error for transform attribute. todo: report */ |
---|
| 516 | } |
---|
| 517 | } |
---|
| 518 | |
---|
| 519 | /** |
---|
| 520 | * rsvg_parse_style_attrs: Parse style attribute. |
---|
| 521 | * @ctx: Rsvg context. |
---|
| 522 | * @atts: Attributes in SAX style. |
---|
| 523 | * |
---|
| 524 | * Parses style and transform attributes and modifies state at top of |
---|
| 525 | * stack. |
---|
| 526 | **/ |
---|
| 527 | static void |
---|
[18351] | 528 | rsvg_parse_style_attrs (RsvgHandle *ctx, const xmlChar **atts) |
---|
[17276] | 529 | { |
---|
[18351] | 530 | int i; |
---|
[17276] | 531 | |
---|
| 532 | if (atts != NULL) |
---|
| 533 | { |
---|
| 534 | for (i = 0; atts[i] != NULL; i += 2) |
---|
| 535 | { |
---|
| 536 | if (!strcmp ((char *)atts[i], "style")) |
---|
| 537 | rsvg_parse_style (ctx, &ctx->state[ctx->n_state - 1], |
---|
| 538 | (char *)atts[i + 1]); |
---|
| 539 | else if (!strcmp ((char *)atts[i], "transform")) |
---|
| 540 | rsvg_parse_transform_attr (ctx, &ctx->state[ctx->n_state - 1], |
---|
| 541 | (char *)atts[i + 1]); |
---|
| 542 | } |
---|
| 543 | } |
---|
| 544 | } |
---|
| 545 | |
---|
| 546 | /** |
---|
| 547 | * rsvg_push_opacity_group: Begin a new transparency group. |
---|
| 548 | * @ctx: Context in which to push. |
---|
| 549 | * |
---|
| 550 | * Pushes a new transparency group onto the stack. The top of the stack |
---|
| 551 | * is stored in the context, while the "saved" value is in the state |
---|
| 552 | * stack. |
---|
| 553 | **/ |
---|
| 554 | static void |
---|
[18274] | 555 | rsvg_push_opacity_group (RsvgHandle *ctx) |
---|
[17276] | 556 | { |
---|
| 557 | RsvgState *state; |
---|
| 558 | GdkPixbuf *pixbuf; |
---|
| 559 | art_u8 *pixels; |
---|
| 560 | int width, height, rowstride; |
---|
| 561 | |
---|
| 562 | state = &ctx->state[ctx->n_state - 1]; |
---|
| 563 | pixbuf = ctx->pixbuf; |
---|
| 564 | |
---|
[18274] | 565 | state->save_pixbuf = pixbuf; |
---|
| 566 | |
---|
| 567 | if (pixbuf == NULL) |
---|
| 568 | { |
---|
| 569 | /* FIXME: What warning/GError here? */ |
---|
| 570 | return; |
---|
| 571 | } |
---|
| 572 | |
---|
[17276] | 573 | if (!gdk_pixbuf_get_has_alpha (pixbuf)) |
---|
| 574 | { |
---|
| 575 | g_warning ("push/pop transparency group on non-alpha buffer nyi"); |
---|
| 576 | return; |
---|
| 577 | } |
---|
| 578 | |
---|
| 579 | width = gdk_pixbuf_get_width (pixbuf); |
---|
| 580 | height = gdk_pixbuf_get_height (pixbuf); |
---|
| 581 | rowstride = gdk_pixbuf_get_rowstride (pixbuf); |
---|
| 582 | pixels = g_new (art_u8, rowstride * height); |
---|
| 583 | memset (pixels, 0, rowstride * height); |
---|
| 584 | |
---|
| 585 | pixbuf = gdk_pixbuf_new_from_data (pixels, |
---|
| 586 | GDK_COLORSPACE_RGB, |
---|
| 587 | TRUE, |
---|
| 588 | gdk_pixbuf_get_bits_per_sample (pixbuf), |
---|
| 589 | width, |
---|
| 590 | height, |
---|
| 591 | rowstride, |
---|
| 592 | rsvg_pixmap_destroy, |
---|
| 593 | NULL); |
---|
| 594 | ctx->pixbuf = pixbuf; |
---|
| 595 | } |
---|
| 596 | |
---|
| 597 | /** |
---|
| 598 | * rsvg_pop_opacity_group: End a transparency group. |
---|
| 599 | * @ctx: Context in which to push. |
---|
| 600 | * @opacity: Opacity for blending (0..255). |
---|
| 601 | * |
---|
| 602 | * Pops a new transparency group from the stack, recompositing with the |
---|
| 603 | * next on stack. |
---|
| 604 | **/ |
---|
| 605 | static void |
---|
[18274] | 606 | rsvg_pop_opacity_group (RsvgHandle *ctx, int opacity) |
---|
[17276] | 607 | { |
---|
| 608 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
| 609 | GdkPixbuf *tos, *nos; |
---|
| 610 | art_u8 *tos_pixels, *nos_pixels; |
---|
| 611 | int width; |
---|
| 612 | int height; |
---|
| 613 | int rowstride; |
---|
| 614 | int x, y; |
---|
| 615 | int tmp; |
---|
| 616 | |
---|
| 617 | tos = ctx->pixbuf; |
---|
| 618 | nos = state->save_pixbuf; |
---|
| 619 | |
---|
[18274] | 620 | if (tos == NULL || nos == NULL) |
---|
| 621 | { |
---|
| 622 | /* FIXME: What warning/GError here? */ |
---|
| 623 | return; |
---|
| 624 | } |
---|
| 625 | |
---|
[17276] | 626 | if (!gdk_pixbuf_get_has_alpha (nos)) |
---|
| 627 | { |
---|
| 628 | g_warning ("push/pop transparency group on non-alpha buffer nyi"); |
---|
| 629 | return; |
---|
| 630 | } |
---|
| 631 | |
---|
| 632 | width = gdk_pixbuf_get_width (tos); |
---|
| 633 | height = gdk_pixbuf_get_height (tos); |
---|
| 634 | rowstride = gdk_pixbuf_get_rowstride (tos); |
---|
| 635 | |
---|
| 636 | tos_pixels = gdk_pixbuf_get_pixels (tos); |
---|
| 637 | nos_pixels = gdk_pixbuf_get_pixels (nos); |
---|
| 638 | |
---|
| 639 | for (y = 0; y < height; y++) |
---|
| 640 | { |
---|
| 641 | for (x = 0; x < width; x++) |
---|
| 642 | { |
---|
| 643 | art_u8 r, g, b, a; |
---|
| 644 | a = tos_pixels[4 * x + 3]; |
---|
| 645 | if (a) |
---|
| 646 | { |
---|
| 647 | r = tos_pixels[4 * x]; |
---|
| 648 | g = tos_pixels[4 * x + 1]; |
---|
| 649 | b = tos_pixels[4 * x + 2]; |
---|
| 650 | tmp = a * opacity + 0x80; |
---|
| 651 | a = (tmp + (tmp >> 8)) >> 8; |
---|
| 652 | art_rgba_run_alpha (nos_pixels + 4 * x, r, g, b, a, 1); |
---|
| 653 | } |
---|
| 654 | } |
---|
| 655 | tos_pixels += rowstride; |
---|
| 656 | nos_pixels += rowstride; |
---|
| 657 | } |
---|
| 658 | |
---|
[18274] | 659 | g_object_unref (tos); |
---|
[17276] | 660 | ctx->pixbuf = nos; |
---|
| 661 | } |
---|
| 662 | |
---|
| 663 | static void |
---|
[18274] | 664 | rsvg_start_g (RsvgHandle *ctx, const xmlChar **atts) |
---|
[17276] | 665 | { |
---|
| 666 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
| 667 | |
---|
[18351] | 668 | rsvg_parse_style_attrs (ctx, atts); |
---|
[17276] | 669 | |
---|
| 670 | if (state->opacity != 0xff) |
---|
| 671 | rsvg_push_opacity_group (ctx); |
---|
| 672 | } |
---|
| 673 | |
---|
| 674 | static void |
---|
[18274] | 675 | rsvg_end_g (RsvgHandle *ctx) |
---|
[17276] | 676 | { |
---|
| 677 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
| 678 | |
---|
| 679 | if (state->opacity != 0xff) |
---|
| 680 | rsvg_pop_opacity_group (ctx, state->opacity); |
---|
| 681 | } |
---|
| 682 | |
---|
| 683 | /** |
---|
| 684 | * rsvg_close_vpath: Close a vector path. |
---|
| 685 | * @src: Source vector path. |
---|
| 686 | * |
---|
| 687 | * Closes any open subpaths in the vector path. |
---|
| 688 | * |
---|
| 689 | * Return value: Closed vector path, allocated with g_new. |
---|
| 690 | **/ |
---|
| 691 | static ArtVpath * |
---|
| 692 | rsvg_close_vpath (const ArtVpath *src) |
---|
| 693 | { |
---|
| 694 | ArtVpath *result; |
---|
| 695 | int n_result, n_result_max; |
---|
| 696 | int src_ix; |
---|
| 697 | double beg_x, beg_y; |
---|
| 698 | gboolean open; |
---|
| 699 | |
---|
| 700 | n_result = 0; |
---|
| 701 | n_result_max = 16; |
---|
| 702 | result = g_new (ArtVpath, n_result_max); |
---|
| 703 | |
---|
| 704 | beg_x = 0; |
---|
| 705 | beg_y = 0; |
---|
| 706 | open = FALSE; |
---|
| 707 | |
---|
| 708 | for (src_ix = 0; src[src_ix].code != ART_END; src_ix++) |
---|
| 709 | { |
---|
| 710 | if (n_result == n_result_max) |
---|
| 711 | result = g_renew (ArtVpath, result, n_result_max <<= 1); |
---|
| 712 | result[n_result].code = src[src_ix].code == ART_MOVETO_OPEN ? |
---|
| 713 | ART_MOVETO : src[src_ix].code; |
---|
| 714 | result[n_result].x = src[src_ix].x; |
---|
| 715 | result[n_result].y = src[src_ix].y; |
---|
| 716 | n_result++; |
---|
| 717 | if (src[src_ix].code == ART_MOVETO_OPEN) |
---|
| 718 | { |
---|
| 719 | beg_x = src[src_ix].x; |
---|
| 720 | beg_y = src[src_ix].y; |
---|
| 721 | open = TRUE; |
---|
| 722 | } |
---|
| 723 | else if (src[src_ix + 1].code != ART_LINETO) |
---|
| 724 | { |
---|
| 725 | if (open && (beg_x != src[src_ix].x || beg_y != src[src_ix].y)) |
---|
| 726 | { |
---|
| 727 | if (n_result == n_result_max) |
---|
| 728 | result = g_renew (ArtVpath, result, n_result_max <<= 1); |
---|
| 729 | result[n_result].code = ART_LINETO; |
---|
| 730 | result[n_result].x = beg_x; |
---|
| 731 | result[n_result].y = beg_y; |
---|
| 732 | n_result++; |
---|
| 733 | } |
---|
| 734 | open = FALSE; |
---|
| 735 | } |
---|
| 736 | } |
---|
| 737 | if (n_result == n_result_max) |
---|
| 738 | result = g_renew (ArtVpath, result, n_result_max <<= 1); |
---|
| 739 | result[n_result].code = ART_END; |
---|
| 740 | result[n_result].x = 0.0; |
---|
| 741 | result[n_result].y = 0.0; |
---|
| 742 | return result; |
---|
| 743 | } |
---|
| 744 | |
---|
| 745 | /** |
---|
| 746 | * rsvg_render_svp: Render an SVP. |
---|
| 747 | * @ctx: Context in which to render. |
---|
| 748 | * @svp: SVP to render. |
---|
| 749 | * @ps: Paint server for rendering. |
---|
| 750 | * @opacity: Opacity as 0..0xff. |
---|
| 751 | * |
---|
| 752 | * Renders the SVP over the pixbuf in @ctx. |
---|
| 753 | **/ |
---|
| 754 | static void |
---|
[18274] | 755 | rsvg_render_svp (RsvgHandle *ctx, const ArtSVP *svp, |
---|
[17276] | 756 | RsvgPaintServer *ps, int opacity) |
---|
| 757 | { |
---|
| 758 | GdkPixbuf *pixbuf; |
---|
| 759 | ArtRender *render; |
---|
| 760 | gboolean has_alpha; |
---|
| 761 | |
---|
| 762 | pixbuf = ctx->pixbuf; |
---|
[18274] | 763 | if (pixbuf == NULL) |
---|
| 764 | { |
---|
| 765 | /* FIXME: What warning/GError here? */ |
---|
| 766 | return; |
---|
| 767 | } |
---|
| 768 | |
---|
[17276] | 769 | has_alpha = gdk_pixbuf_get_has_alpha (pixbuf); |
---|
| 770 | |
---|
[18274] | 771 | render = art_render_new (0, 0, |
---|
[17276] | 772 | gdk_pixbuf_get_width (pixbuf), |
---|
| 773 | gdk_pixbuf_get_height (pixbuf), |
---|
| 774 | gdk_pixbuf_get_pixels (pixbuf), |
---|
| 775 | gdk_pixbuf_get_rowstride (pixbuf), |
---|
| 776 | gdk_pixbuf_get_n_channels (pixbuf) - |
---|
| 777 | (has_alpha ? 1 : 0), |
---|
| 778 | gdk_pixbuf_get_bits_per_sample (pixbuf), |
---|
| 779 | has_alpha ? ART_ALPHA_SEPARATE : ART_ALPHA_NONE, |
---|
| 780 | NULL); |
---|
| 781 | |
---|
| 782 | art_render_svp (render, svp); |
---|
| 783 | art_render_mask_solid (render, (opacity << 8) + opacity + (opacity >> 7)); |
---|
| 784 | rsvg_render_paint_server (render, ps, NULL); /* todo: paint server ctx */ |
---|
| 785 | art_render_invoke (render); |
---|
| 786 | } |
---|
| 787 | |
---|
| 788 | static void |
---|
[18274] | 789 | rsvg_render_bpath (RsvgHandle *ctx, const ArtBpath *bpath) |
---|
[17276] | 790 | { |
---|
| 791 | RsvgState *state; |
---|
| 792 | ArtBpath *affine_bpath; |
---|
| 793 | ArtVpath *vpath; |
---|
| 794 | ArtSVP *svp; |
---|
| 795 | GdkPixbuf *pixbuf; |
---|
| 796 | gboolean need_tmpbuf; |
---|
| 797 | int opacity; |
---|
| 798 | int tmp; |
---|
| 799 | |
---|
[18274] | 800 | pixbuf = ctx->pixbuf; |
---|
| 801 | if (pixbuf == NULL) |
---|
| 802 | { |
---|
| 803 | /* FIXME: What warning/GError here? */ |
---|
| 804 | return; |
---|
| 805 | } |
---|
| 806 | |
---|
[17276] | 807 | state = &ctx->state[ctx->n_state - 1]; |
---|
| 808 | affine_bpath = art_bpath_affine_transform (bpath, |
---|
| 809 | state->affine); |
---|
[18274] | 810 | |
---|
[17276] | 811 | vpath = art_bez_path_to_vec (affine_bpath, 0.25); |
---|
| 812 | art_free (affine_bpath); |
---|
| 813 | |
---|
| 814 | need_tmpbuf = (state->fill != NULL) && (state->stroke != NULL) && |
---|
| 815 | state->opacity != 0xff; |
---|
| 816 | |
---|
| 817 | if (need_tmpbuf) |
---|
| 818 | rsvg_push_opacity_group (ctx); |
---|
| 819 | |
---|
| 820 | if (state->fill != NULL) |
---|
| 821 | { |
---|
| 822 | ArtVpath *closed_vpath; |
---|
[18274] | 823 | ArtSVP *svp2; |
---|
| 824 | ArtSvpWriter *swr; |
---|
| 825 | |
---|
[17276] | 826 | closed_vpath = rsvg_close_vpath (vpath); |
---|
[18274] | 827 | svp = art_svp_from_vpath (closed_vpath); |
---|
[17276] | 828 | g_free (closed_vpath); |
---|
[18274] | 829 | |
---|
| 830 | swr = art_svp_writer_rewind_new (ART_WIND_RULE_NONZERO); |
---|
| 831 | art_svp_intersector (svp, swr); |
---|
| 832 | |
---|
| 833 | svp2 = art_svp_writer_rewind_reap (swr); |
---|
[17276] | 834 | art_svp_free (svp); |
---|
| 835 | |
---|
| 836 | opacity = state->fill_opacity; |
---|
| 837 | if (!need_tmpbuf && state->opacity != 0xff) |
---|
| 838 | { |
---|
| 839 | tmp = opacity * state->opacity + 0x80; |
---|
| 840 | opacity = (tmp + (tmp >> 8)) >> 8; |
---|
| 841 | } |
---|
[18274] | 842 | rsvg_render_svp (ctx, svp2, state->fill, opacity); |
---|
| 843 | art_svp_free (svp2); |
---|
[17276] | 844 | } |
---|
| 845 | |
---|
| 846 | if (state->stroke != NULL) |
---|
| 847 | { |
---|
| 848 | /* todo: libart doesn't yet implement anamorphic scaling of strokes */ |
---|
| 849 | double stroke_width = state->stroke_width * |
---|
[18274] | 850 | art_affine_expansion (state->affine); |
---|
[17276] | 851 | |
---|
| 852 | if (stroke_width < 0.25) |
---|
| 853 | stroke_width = 0.25; |
---|
| 854 | |
---|
| 855 | svp = art_svp_vpath_stroke (vpath, state->join, state->cap, |
---|
[18351] | 856 | stroke_width, 4, 0.25); |
---|
[17276] | 857 | opacity = state->stroke_opacity; |
---|
| 858 | if (!need_tmpbuf && state->opacity != 0xff) |
---|
| 859 | { |
---|
| 860 | tmp = opacity * state->opacity + 0x80; |
---|
| 861 | opacity = (tmp + (tmp >> 8)) >> 8; |
---|
| 862 | } |
---|
| 863 | rsvg_render_svp (ctx, svp, state->stroke, opacity); |
---|
| 864 | art_svp_free (svp); |
---|
| 865 | } |
---|
| 866 | |
---|
| 867 | if (need_tmpbuf) |
---|
| 868 | rsvg_pop_opacity_group (ctx, state->opacity); |
---|
| 869 | |
---|
| 870 | art_free (vpath); |
---|
| 871 | } |
---|
| 872 | |
---|
| 873 | static void |
---|
[18274] | 874 | rsvg_start_path (RsvgHandle *ctx, const xmlChar **atts) |
---|
| 875 | { |
---|
[17276] | 876 | int i; |
---|
| 877 | char *d = NULL; |
---|
| 878 | |
---|
[18351] | 879 | rsvg_parse_style_attrs (ctx, atts); |
---|
[17276] | 880 | if (atts != NULL) |
---|
| 881 | { |
---|
| 882 | for (i = 0; atts[i] != NULL; i += 2) |
---|
| 883 | { |
---|
| 884 | if (!strcmp ((char *)atts[i], "d")) |
---|
| 885 | d = (char *)atts[i + 1]; |
---|
| 886 | } |
---|
| 887 | } |
---|
[18351] | 888 | if (d != NULL) |
---|
| 889 | { |
---|
| 890 | RsvgBpathDef *bpath_def; |
---|
[17276] | 891 | |
---|
[18351] | 892 | bpath_def = rsvg_parse_path (d); |
---|
| 893 | rsvg_bpath_def_art_finish (bpath_def); |
---|
[17276] | 894 | |
---|
[18351] | 895 | rsvg_render_bpath (ctx, bpath_def->bpath); |
---|
[17276] | 896 | |
---|
[18351] | 897 | rsvg_bpath_def_free (bpath_def); |
---|
[17276] | 898 | } |
---|
| 899 | } |
---|
| 900 | |
---|
[18351] | 901 | /* begin text - this should likely get split into its own .c file */ |
---|
[17276] | 902 | |
---|
[18351] | 903 | typedef struct _RsvgSaxHandlerText RsvgSaxHandlerText; |
---|
| 904 | |
---|
| 905 | struct _RsvgSaxHandlerText { |
---|
[17276] | 906 | RsvgSaxHandler super; |
---|
[18274] | 907 | RsvgHandle *ctx; |
---|
[18351] | 908 | double xpos; |
---|
| 909 | double ypos; |
---|
| 910 | }; |
---|
[17276] | 911 | |
---|
| 912 | static void |
---|
| 913 | rsvg_text_handler_free (RsvgSaxHandler *self) |
---|
| 914 | { |
---|
| 915 | g_free (self); |
---|
| 916 | } |
---|
| 917 | |
---|
| 918 | static void |
---|
| 919 | rsvg_text_handler_characters (RsvgSaxHandler *self, const xmlChar *ch, int len) |
---|
| 920 | { |
---|
| 921 | RsvgSaxHandlerText *z = (RsvgSaxHandlerText *)self; |
---|
[18274] | 922 | RsvgHandle *ctx = z->ctx; |
---|
[18351] | 923 | char *string; |
---|
[17276] | 924 | int beg, end; |
---|
| 925 | RsvgState *state; |
---|
| 926 | ArtRender *render; |
---|
| 927 | GdkPixbuf *pixbuf; |
---|
| 928 | gboolean has_alpha; |
---|
| 929 | int opacity; |
---|
[18274] | 930 | PangoLayout *layout; |
---|
| 931 | PangoFontDescription *font; |
---|
| 932 | PangoLayoutLine *line; |
---|
| 933 | PangoRectangle ink_rect, line_ink_rect; |
---|
| 934 | FT_Bitmap bitmap; |
---|
[17276] | 935 | |
---|
[18274] | 936 | state = &ctx->state[ctx->n_state - 1]; |
---|
| 937 | if (state->fill == NULL && state->font_size <= 0) |
---|
| 938 | { |
---|
| 939 | return; |
---|
| 940 | } |
---|
| 941 | |
---|
| 942 | pixbuf = ctx->pixbuf; |
---|
| 943 | if (pixbuf == NULL) |
---|
| 944 | { |
---|
| 945 | /* FIXME: What warning/GError here? */ |
---|
| 946 | return; |
---|
| 947 | } |
---|
| 948 | |
---|
[17276] | 949 | /* Copy ch into string, chopping off leading and trailing whitespace */ |
---|
| 950 | for (beg = 0; beg < len; beg++) |
---|
[18274] | 951 | if (!g_ascii_isspace (ch[beg])) |
---|
[17276] | 952 | break; |
---|
[18351] | 953 | |
---|
[17276] | 954 | for (end = len; end > beg; end--) |
---|
[18274] | 955 | if (!g_ascii_isspace (ch[end - 1])) |
---|
[17276] | 956 | break; |
---|
| 957 | |
---|
[18351] | 958 | string = g_malloc (end - beg + 1); |
---|
| 959 | memcpy (string, ch + beg, end - beg); |
---|
| 960 | string[end - beg] = 0; |
---|
| 961 | |
---|
| 962 | #ifdef VERBOSE |
---|
| 963 | fprintf (stderr, "text characters(%s, %d)\n", string, len); |
---|
| 964 | #endif |
---|
| 965 | |
---|
[18274] | 966 | if (ctx->pango_context == NULL) |
---|
[18351] | 967 | ctx->pango_context = pango_ft2_get_context (72, 72); /* FIXME: dpi? */ |
---|
[17276] | 968 | |
---|
[18274] | 969 | has_alpha = gdk_pixbuf_get_has_alpha (pixbuf); |
---|
| 970 | |
---|
| 971 | render = art_render_new (0, 0, |
---|
| 972 | gdk_pixbuf_get_width (pixbuf), |
---|
| 973 | gdk_pixbuf_get_height (pixbuf), |
---|
| 974 | gdk_pixbuf_get_pixels (pixbuf), |
---|
| 975 | gdk_pixbuf_get_rowstride (pixbuf), |
---|
| 976 | gdk_pixbuf_get_n_channels (pixbuf) - |
---|
| 977 | (has_alpha ? 1 : 0), |
---|
| 978 | gdk_pixbuf_get_bits_per_sample (pixbuf), |
---|
| 979 | has_alpha ? ART_ALPHA_SEPARATE : ART_ALPHA_NONE, |
---|
| 980 | NULL); |
---|
| 981 | |
---|
| 982 | layout = pango_layout_new (ctx->pango_context); |
---|
[18351] | 983 | pango_layout_set_text (layout, string, -1); |
---|
[18274] | 984 | font = pango_font_description_copy (pango_context_get_font_description (ctx->pango_context)); |
---|
| 985 | if (state->font_family) |
---|
| 986 | pango_font_description_set_family_static (font, state->font_family); |
---|
[18351] | 987 | pango_font_description_set_size (font, state->font_size * PANGO_SCALE); |
---|
[18274] | 988 | pango_layout_set_font_description (layout, font); |
---|
| 989 | pango_font_description_free (font); |
---|
| 990 | |
---|
| 991 | pango_layout_get_pixel_extents (layout, &ink_rect, NULL); |
---|
| 992 | |
---|
| 993 | line = pango_layout_get_line (layout, 0); |
---|
| 994 | if (line == NULL) |
---|
| 995 | line_ink_rect = ink_rect; /* nothing to draw anyway */ |
---|
| 996 | else |
---|
| 997 | pango_layout_line_get_pixel_extents (line, &line_ink_rect, NULL); |
---|
| 998 | |
---|
| 999 | bitmap.rows = ink_rect.height; |
---|
| 1000 | bitmap.width = ink_rect.width; |
---|
| 1001 | bitmap.pitch = (bitmap.width + 3) & ~3; |
---|
| 1002 | bitmap.buffer = g_malloc0 (bitmap.rows * bitmap.pitch); |
---|
| 1003 | bitmap.num_grays = 0x100; |
---|
| 1004 | bitmap.pixel_mode = ft_pixel_mode_grays; |
---|
| 1005 | |
---|
| 1006 | pango_ft2_render_layout (&bitmap, layout, -ink_rect.x, -ink_rect.y); |
---|
| 1007 | |
---|
| 1008 | g_object_unref (layout); |
---|
| 1009 | |
---|
| 1010 | rsvg_render_paint_server (render, state->fill, NULL); /* todo: paint server ctx */ |
---|
| 1011 | opacity = state->fill_opacity * state->opacity; |
---|
| 1012 | opacity = opacity + (opacity >> 7) + (opacity >> 14); |
---|
[18351] | 1013 | #ifdef VERBOSE |
---|
| 1014 | fprintf (stderr, "opacity = %d\n", opacity); |
---|
| 1015 | #endif |
---|
[18274] | 1016 | art_render_mask_solid (render, opacity); |
---|
| 1017 | art_render_mask (render, |
---|
[18351] | 1018 | state->affine[4] + line_ink_rect.x, |
---|
[18274] | 1019 | state->affine[5] + line_ink_rect.y, |
---|
[18351] | 1020 | state->affine[4] + line_ink_rect.x + bitmap.width, |
---|
[18274] | 1021 | state->affine[5] + line_ink_rect.y + bitmap.rows, |
---|
| 1022 | bitmap.buffer, bitmap.pitch); |
---|
| 1023 | art_render_invoke (render); |
---|
| 1024 | g_free (bitmap.buffer); |
---|
| 1025 | |
---|
[18351] | 1026 | g_free (string); |
---|
[18274] | 1027 | } |
---|
| 1028 | |
---|
| 1029 | static void |
---|
| 1030 | rsvg_start_text (RsvgHandle *ctx, const xmlChar **atts) |
---|
[17276] | 1031 | { |
---|
| 1032 | RsvgSaxHandlerText *handler = g_new0 (RsvgSaxHandlerText, 1); |
---|
[18351] | 1033 | |
---|
[17276] | 1034 | handler->super.free = rsvg_text_handler_free; |
---|
| 1035 | handler->super.characters = rsvg_text_handler_characters; |
---|
| 1036 | handler->ctx = ctx; |
---|
| 1037 | |
---|
[18351] | 1038 | /* todo: parse "x" and "y" attributes */ |
---|
| 1039 | handler->xpos = 0; |
---|
| 1040 | handler->ypos = 0; |
---|
[17276] | 1041 | |
---|
[18351] | 1042 | rsvg_parse_style_attrs (ctx, atts); |
---|
[17276] | 1043 | ctx->handler = &handler->super; |
---|
[18351] | 1044 | #ifdef VERBOSE |
---|
| 1045 | fprintf (stderr, "begin text!\n"); |
---|
| 1046 | #endif |
---|
[17276] | 1047 | } |
---|
| 1048 | |
---|
| 1049 | /* end text */ |
---|
| 1050 | |
---|
[18351] | 1051 | static void |
---|
| 1052 | rsvg_start_defs (RsvgHandle *ctx, const xmlChar **atts) |
---|
| 1053 | { |
---|
| 1054 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
[17276] | 1055 | |
---|
[18351] | 1056 | state->in_defs = TRUE; |
---|
| 1057 | } |
---|
[17276] | 1058 | |
---|
[18351] | 1059 | typedef struct _RsvgSaxHandlerGstops RsvgSaxHandlerGstops; |
---|
| 1060 | |
---|
| 1061 | struct _RsvgSaxHandlerGstops { |
---|
[17276] | 1062 | RsvgSaxHandler super; |
---|
[18274] | 1063 | RsvgHandle *ctx; |
---|
[17276] | 1064 | RsvgGradientStops *stops; |
---|
[18351] | 1065 | }; |
---|
[17276] | 1066 | |
---|
| 1067 | static void |
---|
| 1068 | rsvg_gradient_stop_handler_free (RsvgSaxHandler *self) |
---|
| 1069 | { |
---|
| 1070 | g_free (self); |
---|
| 1071 | } |
---|
| 1072 | |
---|
| 1073 | static void |
---|
| 1074 | rsvg_gradient_stop_handler_start (RsvgSaxHandler *self, const xmlChar *name, |
---|
| 1075 | const xmlChar **atts) |
---|
| 1076 | { |
---|
| 1077 | RsvgSaxHandlerGstops *z = (RsvgSaxHandlerGstops *)self; |
---|
| 1078 | RsvgGradientStops *stops = z->stops; |
---|
| 1079 | int i; |
---|
| 1080 | double offset = 0; |
---|
| 1081 | gboolean got_offset = FALSE; |
---|
[18351] | 1082 | gint fixed; |
---|
[17276] | 1083 | RsvgState state; |
---|
| 1084 | int n_stop; |
---|
| 1085 | |
---|
| 1086 | if (strcmp ((char *)name, "stop")) |
---|
| 1087 | { |
---|
| 1088 | g_warning ("unexpected <%s> element in gradient\n", name); |
---|
| 1089 | return; |
---|
| 1090 | } |
---|
| 1091 | |
---|
| 1092 | rsvg_state_init (&state); |
---|
| 1093 | |
---|
| 1094 | if (atts != NULL) |
---|
| 1095 | { |
---|
| 1096 | for (i = 0; atts[i] != NULL; i += 2) |
---|
| 1097 | { |
---|
| 1098 | if (!strcmp ((char *)atts[i], "offset")) |
---|
| 1099 | { |
---|
[18351] | 1100 | offset = rsvg_css_parse_length ((char *)atts[i + 1], &fixed); |
---|
[17276] | 1101 | got_offset = TRUE; |
---|
| 1102 | } |
---|
| 1103 | else if (!strcmp ((char *)atts[i], "style")) |
---|
| 1104 | rsvg_parse_style (z->ctx, &state, (char *)atts[i + 1]); |
---|
| 1105 | } |
---|
| 1106 | } |
---|
| 1107 | |
---|
| 1108 | rsvg_state_finalize (&state); |
---|
| 1109 | |
---|
| 1110 | if (!got_offset) |
---|
| 1111 | { |
---|
| 1112 | g_warning ("gradient stop must specify offset\n"); |
---|
| 1113 | return; |
---|
| 1114 | } |
---|
| 1115 | |
---|
| 1116 | n_stop = stops->n_stop++; |
---|
| 1117 | if (n_stop == 0) |
---|
| 1118 | stops->stop = g_new (RsvgGradientStop, 1); |
---|
| 1119 | else if (!(n_stop & (n_stop - 1))) |
---|
| 1120 | /* double the allocation if size is a power of two */ |
---|
| 1121 | stops->stop = g_renew (RsvgGradientStop, stops->stop, n_stop << 1); |
---|
| 1122 | stops->stop[n_stop].offset = offset; |
---|
| 1123 | stops->stop[n_stop].rgba = (state.stop_color << 8) | state.stop_opacity; |
---|
| 1124 | } |
---|
| 1125 | |
---|
| 1126 | static void |
---|
| 1127 | rsvg_gradient_stop_handler_end (RsvgSaxHandler *self, const xmlChar *name) |
---|
| 1128 | { |
---|
| 1129 | } |
---|
| 1130 | |
---|
| 1131 | static RsvgSaxHandler * |
---|
[18351] | 1132 | rsvg_gradient_stop_handler_new (RsvgHandle *ctx, RsvgGradientStops **p_stops) |
---|
[17276] | 1133 | { |
---|
| 1134 | RsvgSaxHandlerGstops *gstops = g_new0 (RsvgSaxHandlerGstops, 1); |
---|
| 1135 | RsvgGradientStops *stops = g_new (RsvgGradientStops, 1); |
---|
| 1136 | |
---|
| 1137 | gstops->super.free = rsvg_gradient_stop_handler_free; |
---|
| 1138 | gstops->super.start_element = rsvg_gradient_stop_handler_start; |
---|
| 1139 | gstops->super.end_element = rsvg_gradient_stop_handler_end; |
---|
| 1140 | gstops->ctx = ctx; |
---|
| 1141 | gstops->stops = stops; |
---|
| 1142 | |
---|
| 1143 | stops->n_stop = 0; |
---|
| 1144 | stops->stop = NULL; |
---|
| 1145 | |
---|
| 1146 | *p_stops = stops; |
---|
| 1147 | return &gstops->super; |
---|
| 1148 | } |
---|
| 1149 | |
---|
| 1150 | static void |
---|
| 1151 | rsvg_linear_gradient_free (RsvgDefVal *self) |
---|
| 1152 | { |
---|
| 1153 | RsvgLinearGradient *z = (RsvgLinearGradient *)self; |
---|
| 1154 | |
---|
| 1155 | g_free (z->stops->stop); |
---|
| 1156 | g_free (z->stops); |
---|
| 1157 | g_free (self); |
---|
| 1158 | } |
---|
| 1159 | |
---|
| 1160 | static void |
---|
[18274] | 1161 | rsvg_start_linear_gradient (RsvgHandle *ctx, const xmlChar **atts) |
---|
[17276] | 1162 | { |
---|
| 1163 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
[18351] | 1164 | RsvgLinearGradient *grad; |
---|
[17276] | 1165 | int i; |
---|
| 1166 | char *id = NULL; |
---|
[18351] | 1167 | double x1 = 0, y1 = 0, x2 = 100, y2 = 0; |
---|
[17276] | 1168 | ArtGradientSpread spread = ART_GRADIENT_PAD; |
---|
| 1169 | |
---|
| 1170 | /* todo: only handles numeric coordinates in gradientUnits = userSpace */ |
---|
| 1171 | if (atts != NULL) |
---|
| 1172 | { |
---|
| 1173 | for (i = 0; atts[i] != NULL; i += 2) |
---|
| 1174 | { |
---|
| 1175 | if (!strcmp ((char *)atts[i], "id")) |
---|
| 1176 | id = (char *)atts[i + 1]; |
---|
| 1177 | else if (!strcmp ((char *)atts[i], "x1")) |
---|
[18351] | 1178 | x1 = atof ((char *)atts[i + 1]); |
---|
[17276] | 1179 | else if (!strcmp ((char *)atts[i], "y1")) |
---|
[18351] | 1180 | y1 = atof ((char *)atts[i + 1]); |
---|
[17276] | 1181 | else if (!strcmp ((char *)atts[i], "x2")) |
---|
[18351] | 1182 | x2 = atof ((char *)atts[i + 1]); |
---|
[17276] | 1183 | else if (!strcmp ((char *)atts[i], "y2")) |
---|
[18351] | 1184 | y2 = atof ((char *)atts[i + 1]); |
---|
[17276] | 1185 | else if (!strcmp ((char *)atts[i], "spreadMethod")) |
---|
| 1186 | { |
---|
| 1187 | if (!strcmp ((char *)atts[i + 1], "pad")) |
---|
| 1188 | spread = ART_GRADIENT_PAD; |
---|
| 1189 | else if (!strcmp ((char *)atts[i + 1], "reflect")) |
---|
| 1190 | spread = ART_GRADIENT_REFLECT; |
---|
| 1191 | else if (!strcmp ((char *)atts[i + 1], "repeat")) |
---|
| 1192 | spread = ART_GRADIENT_REPEAT; |
---|
| 1193 | } |
---|
| 1194 | } |
---|
| 1195 | } |
---|
| 1196 | |
---|
[18351] | 1197 | grad = g_new (RsvgLinearGradient, 1); |
---|
| 1198 | grad->super.type = RSVG_DEF_LINGRAD; |
---|
| 1199 | grad->super.free = rsvg_linear_gradient_free; |
---|
[17276] | 1200 | |
---|
[18351] | 1201 | ctx->handler = rsvg_gradient_stop_handler_new (ctx, &grad->stops); |
---|
| 1202 | |
---|
[17276] | 1203 | rsvg_defs_set (ctx->defs, id, &grad->super); |
---|
| 1204 | |
---|
| 1205 | for (i = 0; i < 6; i++) |
---|
| 1206 | grad->affine[i] = state->affine[i]; |
---|
[18351] | 1207 | grad->x1 = x1; |
---|
| 1208 | grad->y1 = y1; |
---|
| 1209 | grad->x2 = x2; |
---|
| 1210 | grad->y2 = y2; |
---|
| 1211 | grad->spread = spread; |
---|
[17276] | 1212 | } |
---|
| 1213 | |
---|
| 1214 | static void |
---|
| 1215 | rsvg_radial_gradient_free (RsvgDefVal *self) |
---|
| 1216 | { |
---|
| 1217 | RsvgRadialGradient *z = (RsvgRadialGradient *)self; |
---|
| 1218 | |
---|
| 1219 | g_free (z->stops->stop); |
---|
| 1220 | g_free (z->stops); |
---|
| 1221 | g_free (self); |
---|
| 1222 | } |
---|
| 1223 | |
---|
| 1224 | static void |
---|
[18274] | 1225 | rsvg_start_radial_gradient (RsvgHandle *ctx, const xmlChar **atts) |
---|
[17276] | 1226 | { |
---|
| 1227 | RsvgState *state = &ctx->state[ctx->n_state - 1]; |
---|
[18351] | 1228 | RsvgRadialGradient *grad; |
---|
[17276] | 1229 | int i; |
---|
| 1230 | char *id = NULL; |
---|
[18351] | 1231 | double cx = 50, cy = 50, r = 50, fx = 50, fy = 50; |
---|
[17276] | 1232 | |
---|
| 1233 | /* todo: only handles numeric coordinates in gradientUnits = userSpace */ |
---|
| 1234 | if (atts != NULL) |
---|
| 1235 | { |
---|
| 1236 | for (i = 0; atts[i] != NULL; i += 2) |
---|
| 1237 | { |
---|
| 1238 | if (!strcmp ((char *)atts[i], "id")) |
---|
| 1239 | id = (char *)atts[i + 1]; |
---|
[18351] | 1240 | else if (!strcmp ((char *)atts[i], "cx")) |
---|
| 1241 | cx = atof ((char *)atts[i + 1]); |
---|
| 1242 | else if (!strcmp ((char *)atts[i], "cy")) |
---|
| 1243 | cy = atof ((char *)atts[i + 1]); |
---|
| 1244 | else if (!strcmp ((char *)atts[i], "r")) |
---|
| 1245 | r = atof ((char *)atts[i + 1]); |
---|
| 1246 | else if (!strcmp ((char *)atts[i], "fx")) |
---|
| 1247 | fx = atof ((char *)atts[i + 1]); |
---|
| 1248 | else if (!strcmp ((char *)atts[i], "fy")) |
---|
| 1249 | fy = atof ((char *)atts[i + 1]); |
---|
[17276] | 1250 | } |
---|
| 1251 | } |
---|
| 1252 | |
---|
[18351] | 1253 | grad = g_new (RsvgRadialGradient, 1); |
---|
| 1254 | grad->super.type = RSVG_DEF_RADGRAD; |
---|
| 1255 | grad->super.free = rsvg_radial_gradient_free; |
---|
[17276] | 1256 | |
---|
[18351] | 1257 | ctx->handler = rsvg_gradient_stop_handler_new (ctx, &grad->stops); |
---|
[17276] | 1258 | |
---|
| 1259 | rsvg_defs_set (ctx->defs, id, &grad->super); |
---|
| 1260 | |
---|
| 1261 | for (i = 0; i < 6; i++) |
---|
| 1262 | grad->affine[i] = state->affine[i]; |
---|
[18351] | 1263 | grad->cx = cx; |
---|
| 1264 | grad->cy = cy; |
---|
| 1265 | grad->r = r; |
---|
| 1266 | grad->fx = fx; |
---|
| 1267 | grad->fy = fy; |
---|
[17276] | 1268 | } |
---|
| 1269 | |
---|
| 1270 | static void |
---|
[18351] | 1271 | rsvg_start_element (void *data, const xmlChar *name, const xmlChar **atts) |
---|
[17276] | 1272 | { |
---|
[18351] | 1273 | RsvgHandle *ctx = (RsvgHandle *)data; |
---|
| 1274 | #ifdef VERBOSE |
---|
[17276] | 1275 | int i; |
---|
[18351] | 1276 | #endif |
---|
[17276] | 1277 | |
---|
[18351] | 1278 | #ifdef VERBOSE |
---|
| 1279 | fprintf (stdout, "SAX.startElement(%s", (char *) name); |
---|
| 1280 | if (atts != NULL) { |
---|
| 1281 | for (i = 0;(atts[i] != NULL);i++) { |
---|
| 1282 | fprintf (stdout, ", %s='", atts[i++]); |
---|
| 1283 | fprintf (stdout, "%s'", atts[i]); |
---|
[17276] | 1284 | } |
---|
[18351] | 1285 | } |
---|
| 1286 | fprintf (stdout, ")\n"); |
---|
| 1287 | #endif |
---|
[17276] | 1288 | |
---|
| 1289 | if (ctx->handler) |
---|
| 1290 | { |
---|
| 1291 | ctx->handler_nest++; |
---|
| 1292 | if (ctx->handler->start_element != NULL) |
---|
| 1293 | ctx->handler->start_element (ctx->handler, name, atts); |
---|
| 1294 | } |
---|
| 1295 | else |
---|
| 1296 | { |
---|
| 1297 | /* push the state stack */ |
---|
| 1298 | if (ctx->n_state == ctx->n_state_max) |
---|
| 1299 | ctx->state = g_renew (RsvgState, ctx->state, ctx->n_state_max <<= 1); |
---|
| 1300 | if (ctx->n_state) |
---|
| 1301 | rsvg_state_clone (&ctx->state[ctx->n_state], |
---|
| 1302 | &ctx->state[ctx->n_state - 1]); |
---|
| 1303 | else |
---|
| 1304 | rsvg_state_init (ctx->state); |
---|
| 1305 | ctx->n_state++; |
---|
| 1306 | |
---|
| 1307 | if (!strcmp ((char *)name, "svg")) |
---|
| 1308 | rsvg_start_svg (ctx, atts); |
---|
| 1309 | else if (!strcmp ((char *)name, "g")) |
---|
| 1310 | rsvg_start_g (ctx, atts); |
---|
| 1311 | else if (!strcmp ((char *)name, "path")) |
---|
| 1312 | rsvg_start_path (ctx, atts); |
---|
| 1313 | else if (!strcmp ((char *)name, "text")) |
---|
| 1314 | rsvg_start_text (ctx, atts); |
---|
| 1315 | else if (!strcmp ((char *)name, "defs")) |
---|
| 1316 | rsvg_start_defs (ctx, atts); |
---|
| 1317 | else if (!strcmp ((char *)name, "linearGradient")) |
---|
| 1318 | rsvg_start_linear_gradient (ctx, atts); |
---|
| 1319 | else if (!strcmp ((char *)name, "radialGradient")) |
---|
| 1320 | rsvg_start_radial_gradient (ctx, atts); |
---|
| 1321 | } |
---|
| 1322 | } |
---|
| 1323 | |
---|
| 1324 | static void |
---|
| 1325 | rsvg_end_element (void *data, const xmlChar *name) |
---|
| 1326 | { |
---|
[18274] | 1327 | RsvgHandle *ctx = (RsvgHandle *)data; |
---|
[17276] | 1328 | |
---|
| 1329 | if (ctx->handler_nest > 0) |
---|
| 1330 | { |
---|
| 1331 | if (ctx->handler->end_element != NULL) |
---|
| 1332 | ctx->handler->end_element (ctx->handler, name); |
---|
| 1333 | ctx->handler_nest--; |
---|
| 1334 | } |
---|
| 1335 | else |
---|
| 1336 | { |
---|
| 1337 | if (ctx->handler != NULL) |
---|
| 1338 | { |
---|
| 1339 | ctx->handler->free (ctx->handler); |
---|
| 1340 | ctx->handler = NULL; |
---|
| 1341 | } |
---|
[18274] | 1342 | |
---|
[17276] | 1343 | if (!strcmp ((char *)name, "g")) |
---|
| 1344 | rsvg_end_g (ctx); |
---|
| 1345 | |
---|
| 1346 | /* pop the state stack */ |
---|
| 1347 | ctx->n_state--; |
---|
| 1348 | rsvg_state_finalize (&ctx->state[ctx->n_state]); |
---|
[18351] | 1349 | |
---|
| 1350 | #ifdef VERBOSE |
---|
| 1351 | fprintf (stdout, "SAX.endElement(%s)\n", (char *) name); |
---|
| 1352 | #endif |
---|
[17276] | 1353 | } |
---|
| 1354 | } |
---|
| 1355 | |
---|
| 1356 | static void |
---|
| 1357 | rsvg_characters (void *data, const xmlChar *ch, int len) |
---|
| 1358 | { |
---|
[18274] | 1359 | RsvgHandle *ctx = (RsvgHandle *)data; |
---|
[17276] | 1360 | |
---|
| 1361 | if (ctx->handler && ctx->handler->characters != NULL) |
---|
| 1362 | ctx->handler->characters (ctx->handler, ch, len); |
---|
| 1363 | } |
---|
| 1364 | |
---|
| 1365 | static xmlEntityPtr |
---|
| 1366 | rsvg_get_entity (void *data, const xmlChar *name) |
---|
| 1367 | { |
---|
[18274] | 1368 | RsvgHandle *ctx = (RsvgHandle *)data; |
---|
[17276] | 1369 | |
---|
| 1370 | return (xmlEntityPtr)g_hash_table_lookup (ctx->entities, name); |
---|
| 1371 | } |
---|
| 1372 | |
---|
| 1373 | static void |
---|
| 1374 | rsvg_entity_decl (void *data, const xmlChar *name, int type, |
---|
| 1375 | const xmlChar *publicId, const xmlChar *systemId, xmlChar *content) |
---|
| 1376 | { |
---|
[18274] | 1377 | RsvgHandle *ctx = (RsvgHandle *)data; |
---|
[17276] | 1378 | GHashTable *entities = ctx->entities; |
---|
| 1379 | xmlEntityPtr entity; |
---|
| 1380 | char *dupname; |
---|
| 1381 | |
---|
| 1382 | entity = g_new0 (xmlEntity, 1); |
---|
| 1383 | entity->type = type; |
---|
[18274] | 1384 | entity->length = strlen (name); |
---|
[17276] | 1385 | dupname = g_strdup (name); |
---|
| 1386 | entity->name = dupname; |
---|
| 1387 | entity->ExternalID = g_strdup (publicId); |
---|
| 1388 | entity->SystemID = g_strdup (systemId); |
---|
| 1389 | if (content) |
---|
| 1390 | { |
---|
| 1391 | entity->content = xmlMemStrdup (content); |
---|
| 1392 | entity->length = strlen (content); |
---|
| 1393 | } |
---|
| 1394 | g_hash_table_insert (entities, dupname, entity); |
---|
| 1395 | } |
---|
| 1396 | |
---|
[18274] | 1397 | static void |
---|
| 1398 | rsvg_error_cb (void *data, const char *msg, ...) |
---|
| 1399 | { |
---|
| 1400 | va_list args; |
---|
| 1401 | |
---|
| 1402 | va_start (args, msg); |
---|
[18351] | 1403 | #ifdef VERBOSE |
---|
| 1404 | fprintf (stderr, "fatal svg parse error: "); |
---|
| 1405 | #endif |
---|
[18274] | 1406 | vfprintf (stderr, msg, args); |
---|
| 1407 | va_end (args); |
---|
| 1408 | } |
---|
| 1409 | |
---|
[17276] | 1410 | static xmlSAXHandler rsvgSAXHandlerStruct = { |
---|
| 1411 | NULL, /* internalSubset */ |
---|
| 1412 | NULL, /* isStandalone */ |
---|
| 1413 | NULL, /* hasInternalSubset */ |
---|
| 1414 | NULL, /* hasExternalSubset */ |
---|
| 1415 | NULL, /* resolveEntity */ |
---|
| 1416 | rsvg_get_entity, /* getEntity */ |
---|
| 1417 | rsvg_entity_decl, /* entityDecl */ |
---|
| 1418 | NULL, /* notationDecl */ |
---|
| 1419 | NULL, /* attributeDecl */ |
---|
| 1420 | NULL, /* elementDecl */ |
---|
| 1421 | NULL, /* unparsedEntityDecl */ |
---|
| 1422 | NULL, /* setDocumentLocator */ |
---|
| 1423 | NULL, /* startDocument */ |
---|
| 1424 | NULL, /* endDocument */ |
---|
| 1425 | rsvg_start_element, /* startElement */ |
---|
| 1426 | rsvg_end_element, /* endElement */ |
---|
| 1427 | NULL, /* reference */ |
---|
| 1428 | rsvg_characters, /* characters */ |
---|
| 1429 | NULL, /* ignorableWhitespace */ |
---|
| 1430 | NULL, /* processingInstruction */ |
---|
| 1431 | NULL, /* comment */ |
---|
| 1432 | NULL, /* xmlParserWarning */ |
---|
[18274] | 1433 | rsvg_error_cb, /* xmlParserError */ |
---|
| 1434 | rsvg_error_cb, /* xmlParserFatalError */ |
---|
[17276] | 1435 | NULL, /* getParameterEntity */ |
---|
| 1436 | }; |
---|
| 1437 | |
---|
[18274] | 1438 | GQuark |
---|
| 1439 | rsvg_error_quark (void) |
---|
| 1440 | { |
---|
| 1441 | static GQuark q = 0; |
---|
| 1442 | if (q == 0) |
---|
| 1443 | q = g_quark_from_static_string ("rsvg-error-quark"); |
---|
[17276] | 1444 | |
---|
[18274] | 1445 | return q; |
---|
| 1446 | } |
---|
| 1447 | |
---|
| 1448 | /** |
---|
| 1449 | * rsvg_handle_new: |
---|
| 1450 | * @void: |
---|
| 1451 | * |
---|
| 1452 | * Returns a new rsvg handle. Must be freed with @rsvg_handle_free. This |
---|
| 1453 | * handle can be used for dynamically loading an image. You need to feed it |
---|
| 1454 | * data using @rsvg_handle_write, then call @rsvg_handle_close when done. No |
---|
| 1455 | * more than one image can be loaded with one handle. |
---|
| 1456 | * |
---|
| 1457 | * Return value: A new #RsvgHandle |
---|
| 1458 | **/ |
---|
| 1459 | RsvgHandle * |
---|
| 1460 | rsvg_handle_new (void) |
---|
| 1461 | { |
---|
| 1462 | RsvgHandle *handle; |
---|
| 1463 | |
---|
| 1464 | handle = g_new0 (RsvgHandle, 1); |
---|
| 1465 | handle->n_state = 0; |
---|
| 1466 | handle->n_state_max = 16; |
---|
| 1467 | handle->state = g_new (RsvgState, handle->n_state_max); |
---|
| 1468 | handle->defs = rsvg_defs_new (); |
---|
| 1469 | handle->handler_nest = 0; |
---|
| 1470 | handle->entities = g_hash_table_new (g_str_hash, g_str_equal); |
---|
| 1471 | |
---|
| 1472 | handle->ctxt = NULL; |
---|
| 1473 | |
---|
| 1474 | return handle; |
---|
| 1475 | } |
---|
| 1476 | |
---|
| 1477 | /** |
---|
| 1478 | * rsvg_handle_set_size_callback: |
---|
| 1479 | * @handle: An #RsvgHandle |
---|
| 1480 | * @size_func: A sizing function, or %NULL |
---|
| 1481 | * @user_data: User data to pass to @size_func, or %NULL |
---|
| 1482 | * @user_data_destroy: Destroy function for @user_data, or %NULL |
---|
| 1483 | * |
---|
| 1484 | * Sets the sizing function for the @handle. This function is called right |
---|
| 1485 | * after the size of the image has been loaded. The size of the image is passed |
---|
| 1486 | * in to the function, which may then modify these values to set the real size |
---|
| 1487 | * of the generated pixbuf. If the image has no associated size, then the size |
---|
| 1488 | * arguments are set to -1. |
---|
| 1489 | **/ |
---|
| 1490 | void |
---|
| 1491 | rsvg_handle_set_size_callback (RsvgHandle *handle, |
---|
| 1492 | RsvgSizeFunc size_func, |
---|
| 1493 | gpointer user_data, |
---|
| 1494 | GDestroyNotify user_data_destroy) |
---|
| 1495 | { |
---|
| 1496 | g_return_if_fail (handle != NULL); |
---|
| 1497 | |
---|
| 1498 | if (handle->user_data_destroy) |
---|
| 1499 | (* handle->user_data_destroy) (handle->user_data); |
---|
| 1500 | |
---|
| 1501 | handle->size_func = size_func; |
---|
| 1502 | handle->user_data = user_data; |
---|
| 1503 | handle->user_data_destroy = user_data_destroy; |
---|
| 1504 | } |
---|
| 1505 | |
---|
| 1506 | /** |
---|
| 1507 | * rsvg_handle_write: |
---|
| 1508 | * @handle: An #RsvgHandle |
---|
| 1509 | * @buf: Pointer to svg data |
---|
| 1510 | * @count: length of the @buf buffer in bytes |
---|
| 1511 | * @error: return location for errors |
---|
| 1512 | * |
---|
| 1513 | * Loads the next @count bytes of the image. This will return #TRUE if the data |
---|
| 1514 | * was loaded successful, and #FALSE if an error occurred. In the latter case, |
---|
| 1515 | * the loader will be closed, and will not accept further writes. If FALSE is |
---|
| 1516 | * returned, @error will be set to an error from the #RSVG_ERROR domain. |
---|
| 1517 | * |
---|
| 1518 | * Return value: #TRUE if the write was successful, or #FALSE if there was an |
---|
| 1519 | * error. |
---|
| 1520 | **/ |
---|
| 1521 | gboolean |
---|
| 1522 | rsvg_handle_write (RsvgHandle *handle, |
---|
| 1523 | const guchar *buf, |
---|
| 1524 | gsize count, |
---|
| 1525 | GError **error) |
---|
| 1526 | { |
---|
| 1527 | GError *real_error; |
---|
| 1528 | g_return_val_if_fail (handle != NULL, FALSE); |
---|
| 1529 | |
---|
| 1530 | handle->error = &real_error; |
---|
| 1531 | if (handle->ctxt == NULL) |
---|
| 1532 | { |
---|
| 1533 | handle->ctxt = xmlCreatePushParserCtxt ( |
---|
| 1534 | &rsvgSAXHandlerStruct, handle, NULL, 0, NULL); |
---|
| 1535 | handle->ctxt->replaceEntities = TRUE; |
---|
[17276] | 1536 | } |
---|
[18274] | 1537 | |
---|
| 1538 | xmlParseChunk (handle->ctxt, buf, count, 0); |
---|
| 1539 | |
---|
| 1540 | handle->error = NULL; |
---|
| 1541 | /* FIXME: Error handling not implemented. */ |
---|
| 1542 | /* if (*real_error != NULL) |
---|
| 1543 | { |
---|
| 1544 | g_propagate_error (error, real_error); |
---|
| 1545 | return FALSE; |
---|
| 1546 | }*/ |
---|
| 1547 | return TRUE; |
---|
| 1548 | } |
---|
| 1549 | |
---|
| 1550 | /** |
---|
| 1551 | * rsvg_handle_close: |
---|
| 1552 | * @handle: An #RsvgHandle |
---|
| 1553 | * |
---|
| 1554 | * Closes @handle, to indicate that loading the image is complete. This will |
---|
| 1555 | * return #TRUE if the loader closed successfully. Note that @handle isn't |
---|
| 1556 | * freed until @rsvg_handle_free is called. |
---|
| 1557 | * |
---|
| 1558 | * Return value: #TRUE if the loader closed successfully, or #FALSE if there was |
---|
| 1559 | * an error. |
---|
| 1560 | **/ |
---|
| 1561 | gboolean |
---|
| 1562 | rsvg_handle_close (RsvgHandle *handle, |
---|
| 1563 | GError **error) |
---|
| 1564 | { |
---|
| 1565 | gchar chars[1] = { '\0' }; |
---|
| 1566 | GError *real_error; |
---|
| 1567 | |
---|
| 1568 | handle->error = &real_error; |
---|
| 1569 | |
---|
| 1570 | if (handle->ctxt != NULL) |
---|
| 1571 | { |
---|
| 1572 | xmlParseChunk (handle->ctxt, chars, 1, TRUE); |
---|
| 1573 | xmlFreeParserCtxt (handle->ctxt); |
---|
[17276] | 1574 | } |
---|
[18274] | 1575 | |
---|
| 1576 | /* FIXME: Error handling not implemented. */ |
---|
| 1577 | /* |
---|
| 1578 | if (real_error != NULL) |
---|
| 1579 | { |
---|
| 1580 | g_propagate_error (error, real_error); |
---|
| 1581 | return FALSE; |
---|
| 1582 | }*/ |
---|
| 1583 | return TRUE; |
---|
[17276] | 1584 | } |
---|
| 1585 | |
---|
[18274] | 1586 | /** |
---|
| 1587 | * rsvg_handle_get_pixbuf: |
---|
| 1588 | * @handle: An #RsvgHandle |
---|
| 1589 | * |
---|
| 1590 | * Returns the pixbuf loaded by #handle. The pixbuf returned will be reffed, so |
---|
| 1591 | * the caller of this function must assume that ref. If insufficient data has |
---|
| 1592 | * been read to create the pixbuf, or an error occurred in loading, then %NULL |
---|
| 1593 | * will be returned. Note that the pixbuf may not be complete until |
---|
| 1594 | * @rsvg_handle_close has been called. |
---|
| 1595 | * |
---|
| 1596 | * Return value: the pixbuf loaded by #handle, or %NULL. |
---|
| 1597 | **/ |
---|
| 1598 | GdkPixbuf * |
---|
| 1599 | rsvg_handle_get_pixbuf (RsvgHandle *handle) |
---|
| 1600 | { |
---|
| 1601 | g_return_val_if_fail (handle != NULL, NULL); |
---|
| 1602 | |
---|
| 1603 | if (handle->pixbuf) |
---|
| 1604 | return g_object_ref (handle->pixbuf); |
---|
| 1605 | |
---|
| 1606 | return NULL; |
---|
| 1607 | } |
---|
| 1608 | |
---|
| 1609 | /** |
---|
| 1610 | * rsvg_handle_free: |
---|
| 1611 | * @handle: An #RsvgHandle |
---|
| 1612 | * |
---|
| 1613 | * Frees #handle. |
---|
| 1614 | **/ |
---|
| 1615 | void |
---|
| 1616 | rsvg_handle_free (RsvgHandle *handle) |
---|
| 1617 | { |
---|
| 1618 | int i; |
---|
| 1619 | |
---|
| 1620 | if (handle->pango_context != NULL) |
---|
| 1621 | g_object_unref (handle->pango_context); |
---|
| 1622 | rsvg_defs_free (handle->defs); |
---|
| 1623 | |
---|
| 1624 | for (i = 0; i < handle->n_state; i++) |
---|
| 1625 | rsvg_state_finalize (&handle->state[i]); |
---|
| 1626 | g_free (handle->state); |
---|
| 1627 | |
---|
| 1628 | g_hash_table_foreach (handle->entities, rsvg_ctx_free_helper, NULL); |
---|
| 1629 | g_hash_table_destroy (handle->entities); |
---|
| 1630 | |
---|
| 1631 | if (handle->user_data_destroy) |
---|
| 1632 | (* handle->user_data_destroy) (handle->user_data); |
---|
| 1633 | if (handle->pixbuf) |
---|
| 1634 | g_object_unref (handle->pixbuf); |
---|
| 1635 | g_free (handle); |
---|
| 1636 | } |
---|
| 1637 | |
---|
| 1638 | typedef enum { |
---|
| 1639 | RSVG_SIZE_ZOOM, |
---|
| 1640 | RSVG_SIZE_WH, |
---|
| 1641 | RSVG_SIZE_WH_MAX, |
---|
| 1642 | RSVG_SIZE_ZOOM_MAX |
---|
| 1643 | } RsvgSizeType; |
---|
| 1644 | |
---|
| 1645 | struct RsvgSizeCallbackData |
---|
| 1646 | { |
---|
| 1647 | double x_zoom; |
---|
| 1648 | double y_zoom; |
---|
| 1649 | gint width; |
---|
| 1650 | gint height; |
---|
[18351] | 1651 | RsvgSizeType type; |
---|
| 1652 | gboolean zoom_set; |
---|
| 1653 | gboolean max_size_set; |
---|
[18274] | 1654 | }; |
---|
| 1655 | |
---|
[17276] | 1656 | static void |
---|
[18274] | 1657 | rsvg_size_callback (int *width, |
---|
| 1658 | int *height, |
---|
| 1659 | gpointer data) |
---|
[17276] | 1660 | { |
---|
[18274] | 1661 | struct RsvgSizeCallbackData *real_data = (struct RsvgSizeCallbackData *) data; |
---|
| 1662 | double zoomx, zoomy, zoom; |
---|
| 1663 | |
---|
| 1664 | switch (real_data->type) { |
---|
| 1665 | case RSVG_SIZE_ZOOM: |
---|
| 1666 | if (*width < 0 || *height < 0) |
---|
| 1667 | return; |
---|
| 1668 | |
---|
| 1669 | *width = floor (real_data->x_zoom * *width + 0.5); |
---|
| 1670 | *height = floor (real_data->y_zoom * *height + 0.5); |
---|
| 1671 | return; |
---|
| 1672 | |
---|
| 1673 | case RSVG_SIZE_ZOOM_MAX: |
---|
| 1674 | if (*width < 0 || *height < 0) |
---|
| 1675 | return; |
---|
| 1676 | |
---|
| 1677 | *width = floor (real_data->x_zoom * *width + 0.5); |
---|
| 1678 | *height = floor (real_data->y_zoom * *height + 0.5); |
---|
| 1679 | |
---|
| 1680 | if (*width > real_data->width || *height > real_data->height) |
---|
| 1681 | { |
---|
| 1682 | zoomx = (double) real_data->width / *width; |
---|
| 1683 | zoomy = (double) real_data->height / *height; |
---|
| 1684 | zoom = MIN (zoomx, zoomy); |
---|
| 1685 | |
---|
| 1686 | *width = floor (zoom * *width + 0.5); |
---|
| 1687 | *height = floor (zoom * *height + 0.5); |
---|
| 1688 | } |
---|
| 1689 | return; |
---|
| 1690 | |
---|
| 1691 | case RSVG_SIZE_WH_MAX: |
---|
| 1692 | if (*width < 0 || *height < 0) |
---|
| 1693 | return; |
---|
| 1694 | |
---|
| 1695 | zoomx = (double) real_data->width / *width; |
---|
| 1696 | zoomy = (double) real_data->height / *height; |
---|
| 1697 | zoom = MIN (zoomx, zoomy); |
---|
| 1698 | |
---|
| 1699 | *width = floor (zoom * *width + 0.5); |
---|
| 1700 | *height = floor (zoom * *height + 0.5); |
---|
| 1701 | return; |
---|
| 1702 | |
---|
| 1703 | case RSVG_SIZE_WH: |
---|
[18351] | 1704 | if (*width < 0 || *height < 0) |
---|
| 1705 | return; |
---|
[18274] | 1706 | |
---|
| 1707 | if (real_data->width != -1) |
---|
| 1708 | *width = real_data->width; |
---|
| 1709 | if (real_data->height != -1) |
---|
| 1710 | *height = real_data->height; |
---|
| 1711 | return; |
---|
| 1712 | } |
---|
| 1713 | |
---|
| 1714 | g_assert_not_reached (); |
---|
[17276] | 1715 | } |
---|
| 1716 | |
---|
[18274] | 1717 | /** |
---|
| 1718 | * rsvg_pixbuf_from_file: |
---|
| 1719 | * @file_name: A file name |
---|
| 1720 | * @error: return location for errors |
---|
| 1721 | * |
---|
| 1722 | * Loads a new #GdkPixbuf from @file_name and returns it. The caller must |
---|
| 1723 | * assume the reference to the reurned pixbuf. If an error occurred, @error is |
---|
| 1724 | * set and %NULL is returned. |
---|
| 1725 | * |
---|
| 1726 | * Return value: A newly allocated #GdkPixbuf, or %NULL |
---|
| 1727 | **/ |
---|
| 1728 | GdkPixbuf * |
---|
| 1729 | rsvg_pixbuf_from_file (const gchar *file_name, |
---|
| 1730 | GError **error) |
---|
| 1731 | { |
---|
| 1732 | return rsvg_pixbuf_from_file_at_size (file_name, -1, -1, error); |
---|
| 1733 | } |
---|
| 1734 | |
---|
| 1735 | /** |
---|
| 1736 | * rsvg_pixbuf_from_file_at_zoom: |
---|
| 1737 | * @file_name: A file name |
---|
| 1738 | * @x_zoom: The horizontal zoom factor |
---|
| 1739 | * @y_zoom: The vertical zoom factor |
---|
| 1740 | * @error: return location for errors |
---|
| 1741 | * |
---|
| 1742 | * Loads a new #GdkPixbuf from @file_name and returns it. This pixbuf is scaled |
---|
| 1743 | * from the size indicated by the file by a factor of @x_zoom and @y_zoom. The |
---|
| 1744 | * caller must assume the reference to the returned pixbuf. If an error |
---|
| 1745 | * occurred, @error is set and %NULL is returned. |
---|
| 1746 | * |
---|
| 1747 | * Return value: A newly allocated #GdkPixbuf, or %NULL |
---|
| 1748 | **/ |
---|
| 1749 | GdkPixbuf * |
---|
| 1750 | rsvg_pixbuf_from_file_at_zoom (const gchar *file_name, |
---|
| 1751 | double x_zoom, |
---|
| 1752 | double y_zoom, |
---|
| 1753 | GError **error) |
---|
| 1754 | { |
---|
[18351] | 1755 | FILE *f; |
---|
| 1756 | char chars[SVG_BUFFER_SIZE]; |
---|
| 1757 | gint result; |
---|
| 1758 | GdkPixbuf *retval; |
---|
| 1759 | RsvgHandle *handle; |
---|
[18274] | 1760 | struct RsvgSizeCallbackData data; |
---|
| 1761 | |
---|
| 1762 | g_return_val_if_fail (file_name != NULL, NULL); |
---|
| 1763 | g_return_val_if_fail (x_zoom > 0.0 && y_zoom > 0.0, NULL); |
---|
| 1764 | |
---|
[18351] | 1765 | f = fopen (file_name, "r"); |
---|
| 1766 | if (!f) |
---|
| 1767 | { |
---|
| 1768 | /* FIXME: Set up error. */ |
---|
| 1769 | return NULL; |
---|
| 1770 | } |
---|
| 1771 | |
---|
| 1772 | handle = rsvg_handle_new (); |
---|
[18274] | 1773 | data.type = RSVG_SIZE_ZOOM; |
---|
| 1774 | data.x_zoom = x_zoom; |
---|
| 1775 | data.y_zoom = y_zoom; |
---|
| 1776 | |
---|
[18351] | 1777 | rsvg_handle_set_size_callback (handle, rsvg_size_callback, &data, NULL); |
---|
| 1778 | while ((result = fread (chars, 1, SVG_BUFFER_SIZE, f)) > 0) |
---|
| 1779 | rsvg_handle_write (handle, chars, result, error); |
---|
| 1780 | rsvg_handle_close (handle, error); |
---|
| 1781 | |
---|
| 1782 | retval = rsvg_handle_get_pixbuf (handle); |
---|
| 1783 | |
---|
| 1784 | fclose (f); |
---|
| 1785 | rsvg_handle_free (handle); |
---|
| 1786 | return retval; |
---|
[18274] | 1787 | } |
---|
| 1788 | |
---|
| 1789 | /** |
---|
| 1790 | * rsvg_pixbuf_from_file_at_zoom_with_max: |
---|
| 1791 | * @file_name: A file name |
---|
| 1792 | * @x_zoom: The horizontal zoom factor |
---|
| 1793 | * @y_zoom: The vertical zoom factor |
---|
| 1794 | * @max_width: The requested max width |
---|
| 1795 | * @max_height: The requested max heigh |
---|
| 1796 | * @error: return location for errors |
---|
| 1797 | * |
---|
| 1798 | * Loads a new #GdkPixbuf from @file_name and returns it. This pixbuf is scaled |
---|
| 1799 | * from the size indicated by the file by a factor of @x_zoom and @y_zoom. If the |
---|
| 1800 | * resulting pixbuf would be larger than max_width/max_heigh it is uniformly scaled |
---|
[18351] | 1801 | * down to fit in that rectangle. The caller must assume the reference to the |
---|
[18274] | 1802 | * returned pixbuf. If an error occurred, @error is set and %NULL is returned. |
---|
| 1803 | * |
---|
| 1804 | * Return value: A newly allocated #GdkPixbuf, or %NULL |
---|
| 1805 | **/ |
---|
| 1806 | GdkPixbuf * |
---|
| 1807 | rsvg_pixbuf_from_file_at_zoom_with_max (const gchar *file_name, |
---|
| 1808 | double x_zoom, |
---|
| 1809 | double y_zoom, |
---|
| 1810 | gint max_width, |
---|
| 1811 | gint max_height, |
---|
| 1812 | GError **error) |
---|
| 1813 | { |
---|
[18351] | 1814 | FILE *f; |
---|
| 1815 | char chars[SVG_BUFFER_SIZE]; |
---|
| 1816 | gint result; |
---|
| 1817 | GdkPixbuf *retval; |
---|
| 1818 | RsvgHandle *handle; |
---|
[18274] | 1819 | struct RsvgSizeCallbackData data; |
---|
| 1820 | |
---|
| 1821 | g_return_val_if_fail (file_name != NULL, NULL); |
---|
| 1822 | g_return_val_if_fail (x_zoom > 0.0 && y_zoom > 0.0, NULL); |
---|
| 1823 | |
---|
[18351] | 1824 | f = fopen (file_name, "r"); |
---|
| 1825 | if (!f) |
---|
| 1826 | { |
---|
| 1827 | /* FIXME: Set up error. */ |
---|
| 1828 | return NULL; |
---|
| 1829 | } |
---|
| 1830 | |
---|
| 1831 | handle = rsvg_handle_new (); |
---|
[18274] | 1832 | data.type = RSVG_SIZE_ZOOM_MAX; |
---|
| 1833 | data.x_zoom = x_zoom; |
---|
| 1834 | data.y_zoom = y_zoom; |
---|
| 1835 | data.width = max_width; |
---|
| 1836 | data.height = max_height; |
---|
| 1837 | |
---|
[18351] | 1838 | rsvg_handle_set_size_callback (handle, rsvg_size_callback, &data, NULL); |
---|
| 1839 | while ((result = fread (chars, 1, SVG_BUFFER_SIZE, f)) > 0) |
---|
| 1840 | rsvg_handle_write (handle, chars, result, error); |
---|
| 1841 | rsvg_handle_close (handle, error); |
---|
| 1842 | |
---|
| 1843 | retval = rsvg_handle_get_pixbuf (handle); |
---|
| 1844 | |
---|
| 1845 | fclose (f); |
---|
| 1846 | rsvg_handle_free (handle); |
---|
| 1847 | return retval; |
---|
[18274] | 1848 | } |
---|
| 1849 | |
---|
| 1850 | /** |
---|
| 1851 | * rsvg_pixbuf_from_file_at_size: |
---|
| 1852 | * @file_name: A file name |
---|
| 1853 | * @width: The new width, or -1 |
---|
| 1854 | * @height: The new height, or -1 |
---|
| 1855 | * @error: return location for errors |
---|
| 1856 | * |
---|
| 1857 | * Loads a new #GdkPixbuf from @file_name and returns it. This pixbuf is scaled |
---|
| 1858 | * from the size indicated to the new size indicated by @width and @height. If |
---|
| 1859 | * either of these are -1, then the default size of the image being loaded is |
---|
| 1860 | * used. The caller must assume the reference to the returned pixbuf. If an |
---|
| 1861 | * error occurred, @error is set and %NULL is returned. |
---|
| 1862 | * |
---|
| 1863 | * Return value: A newly allocated #GdkPixbuf, or %NULL |
---|
| 1864 | **/ |
---|
| 1865 | GdkPixbuf * |
---|
| 1866 | rsvg_pixbuf_from_file_at_size (const gchar *file_name, |
---|
| 1867 | gint width, |
---|
| 1868 | gint height, |
---|
| 1869 | GError **error) |
---|
| 1870 | { |
---|
[18351] | 1871 | FILE *f; |
---|
| 1872 | char chars[SVG_BUFFER_SIZE]; |
---|
| 1873 | gint result; |
---|
| 1874 | GdkPixbuf *retval; |
---|
| 1875 | RsvgHandle *handle; |
---|
[18274] | 1876 | struct RsvgSizeCallbackData data; |
---|
| 1877 | |
---|
[18351] | 1878 | f = fopen (file_name, "r"); |
---|
| 1879 | if (!f) |
---|
| 1880 | { |
---|
| 1881 | /* FIXME: Set up error. */ |
---|
| 1882 | return NULL; |
---|
| 1883 | } |
---|
| 1884 | handle = rsvg_handle_new (); |
---|
[18274] | 1885 | data.type = RSVG_SIZE_WH; |
---|
| 1886 | data.width = width; |
---|
| 1887 | data.height = height; |
---|
| 1888 | |
---|
[18351] | 1889 | rsvg_handle_set_size_callback (handle, rsvg_size_callback, &data, NULL); |
---|
| 1890 | while ((result = fread (chars, 1, SVG_BUFFER_SIZE, f)) > 0) |
---|
| 1891 | rsvg_handle_write (handle, chars, result, error); |
---|
| 1892 | |
---|
| 1893 | rsvg_handle_close (handle, error); |
---|
| 1894 | |
---|
| 1895 | retval = rsvg_handle_get_pixbuf (handle); |
---|
| 1896 | |
---|
| 1897 | fclose (f); |
---|
| 1898 | rsvg_handle_free (handle); |
---|
| 1899 | return retval; |
---|
[18274] | 1900 | } |
---|
| 1901 | |
---|
| 1902 | /** |
---|
| 1903 | * rsvg_pixbuf_from_file_at_max_size: |
---|
| 1904 | * @file_name: A file name |
---|
| 1905 | * @max_width: The requested max width |
---|
| 1906 | * @max_height: The requested max heigh |
---|
| 1907 | * @error: return location for errors |
---|
| 1908 | * |
---|
| 1909 | * Loads a new #GdkPixbuf from @file_name and returns it. This pixbuf is uniformly |
---|
| 1910 | * scaled so that the it fits into a rectangle of size max_width * max_height. The |
---|
| 1911 | * caller must assume the reference to the returned pixbuf. If an error occurred, |
---|
| 1912 | * @error is set and %NULL is returned. |
---|
| 1913 | * |
---|
| 1914 | * Return value: A newly allocated #GdkPixbuf, or %NULL |
---|
| 1915 | **/ |
---|
| 1916 | GdkPixbuf * |
---|
| 1917 | rsvg_pixbuf_from_file_at_max_size (const gchar *file_name, |
---|
| 1918 | gint max_width, |
---|
| 1919 | gint max_height, |
---|
| 1920 | GError **error) |
---|
| 1921 | { |
---|
[18351] | 1922 | FILE *f; |
---|
| 1923 | char chars[SVG_BUFFER_SIZE]; |
---|
| 1924 | gint result; |
---|
| 1925 | GdkPixbuf *retval; |
---|
| 1926 | RsvgHandle *handle; |
---|
[18274] | 1927 | struct RsvgSizeCallbackData data; |
---|
| 1928 | |
---|
[18351] | 1929 | f = fopen (file_name, "r"); |
---|
| 1930 | if (!f) |
---|
| 1931 | { |
---|
| 1932 | /* FIXME: Set up error. */ |
---|
| 1933 | return NULL; |
---|
| 1934 | } |
---|
| 1935 | handle = rsvg_handle_new (); |
---|
[18274] | 1936 | data.type = RSVG_SIZE_WH_MAX; |
---|
| 1937 | data.width = max_width; |
---|
| 1938 | data.height = max_height; |
---|
| 1939 | |
---|
[18351] | 1940 | rsvg_handle_set_size_callback (handle, rsvg_size_callback, &data, NULL); |
---|
| 1941 | while ((result = fread (chars, 1, SVG_BUFFER_SIZE, f)) > 0) |
---|
| 1942 | rsvg_handle_write (handle, chars, result, error); |
---|
| 1943 | |
---|
| 1944 | rsvg_handle_close (handle, error); |
---|
| 1945 | |
---|
| 1946 | retval = rsvg_handle_get_pixbuf (handle); |
---|
| 1947 | |
---|
| 1948 | fclose (f); |
---|
| 1949 | rsvg_handle_free (handle); |
---|
| 1950 | return retval; |
---|
[18274] | 1951 | } |
---|
[18351] | 1952 | |
---|
| 1953 | |
---|