[18659] | 1 | /* Eye of Gnome - default item factory for icons |
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| 2 | * |
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| 3 | * Copyright (C) 2002 The Free Software Foundation |
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| 4 | * |
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| 5 | * Author: Jens Finke <jens@gnome.org> |
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| 6 | * |
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| 7 | * This program is free software; you can redistribute it and/or modify |
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| 8 | * it under the terms of the GNU General Public License as published by |
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| 9 | * the Free Software Foundation; either version 2 of the License, or |
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| 10 | * (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 |
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| 15 | * GNU 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 General Public License |
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| 18 | * along with this program; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 20 | */ |
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| 21 | |
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| 22 | #include <config.h> |
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[19172] | 23 | #include <string.h> |
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[18659] | 24 | #include <pango/pango-layout.h> |
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| 25 | #include <gtk/gtksignal.h> |
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| 26 | #include <libgnome/gnome-macros.h> |
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| 27 | #include <libgnomecanvas/gnome-canvas-pixbuf.h> |
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| 28 | #include <libgnomecanvas/gnome-canvas-rect-ellipse.h> |
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| 29 | #include <libgnomecanvas/gnome-canvas-text.h> |
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| 30 | #include <libgnomevfs/gnome-vfs-types.h> |
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| 31 | #include <libgnomevfs/gnome-vfs-uri.h> |
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| 32 | #include "eog-item-factory-clean.h" |
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| 33 | #include "eog-collection-model.h" |
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| 34 | #include "cimage.h" |
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| 35 | #include <math.h> |
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| 36 | |
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| 37 | |
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| 38 | #define MAX_CAPTION_LINES 2 |
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| 39 | #define FACTORY_DEBUG 0 |
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| 40 | |
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| 41 | /* Private part of the EogItemFactoryClean structure */ |
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| 42 | struct _EogItemFactoryCleanPrivate { |
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| 43 | EogImageLoader *loader; |
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| 44 | |
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| 45 | /* item metrics */ |
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| 46 | EogCleanMetrics *metrics; |
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| 47 | |
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| 48 | /* default pixmap if the image is not loaded so far */ |
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| 49 | GdkPixbuf *dummy; |
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| 50 | |
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| 51 | /* selection stiple */ |
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| 52 | GdkBitmap *stipple; |
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| 53 | }; |
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| 54 | |
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| 55 | |
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| 56 | |
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| 57 | /* Icon item structure */ |
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| 58 | typedef struct { |
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| 59 | /* unique id */ |
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| 60 | guint id; |
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| 61 | |
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| 62 | /* Base group */ |
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| 63 | GnomeCanvasItem *item; |
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| 64 | |
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| 65 | /* Icon image and its selection rectangle */ |
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| 66 | GnomeCanvasItem *image; |
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| 67 | |
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| 68 | /* Caption and its selection and focus rectangles */ |
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| 69 | GnomeCanvasItem *caption_line[MAX_CAPTION_LINES]; |
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| 70 | |
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| 71 | GnomeCanvasItem *cap_rect; |
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| 72 | |
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| 73 | GnomeCanvasItem *bgr; |
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| 74 | } IconItem; |
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| 75 | |
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| 76 | static void eog_item_factory_clean_class_init (EogItemFactoryCleanClass *class); |
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| 77 | static void eog_item_factory_clean_instance_init (EogItemFactoryClean *factory); |
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| 78 | static void eog_item_factory_clean_dispose (GObject *object); |
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| 79 | static void eog_item_factory_clean_finalize (GObject *object); |
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| 80 | static EogItemFactoryClean* eog_item_factory_clean_construct (EogItemFactoryClean *factory, EogImageLoader *loader); |
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| 81 | |
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| 82 | static GnomeCanvasItem *ii_factory_create_item (EogItemFactory *factory, |
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| 83 | GnomeCanvasGroup *parent, guint id); |
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| 84 | static void ii_factory_update_item (EogItemFactory *factory, |
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| 85 | EogCollectionModel *model, |
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| 86 | GnomeCanvasItem *item, |
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| 87 | EogItemUpdateHint hint); |
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| 88 | static void ii_factory_get_item_size (EogItemFactory *factory, |
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| 89 | gint *width, gint *height); |
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| 90 | |
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| 91 | GNOME_CLASS_BOILERPLATE (EogItemFactoryClean, eog_item_factory_clean, |
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| 92 | EogItemFactory, EOG_TYPE_ITEM_FACTORY); |
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| 93 | |
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| 94 | /* Class initialization function for the icon list item factory */ |
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| 95 | static void |
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| 96 | eog_item_factory_clean_class_init (EogItemFactoryCleanClass *class) |
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| 97 | { |
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| 98 | GObjectClass *object_class; |
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| 99 | EogItemFactoryClass *ei_factory_class; |
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| 100 | |
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| 101 | object_class = (GObjectClass *) class; |
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| 102 | ei_factory_class = (EogItemFactoryClass *) class; |
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| 103 | |
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| 104 | object_class->dispose = eog_item_factory_clean_dispose; |
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| 105 | object_class->finalize = eog_item_factory_clean_finalize; |
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| 106 | |
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| 107 | ei_factory_class->create_item = ii_factory_create_item; |
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| 108 | ei_factory_class->update_item = ii_factory_update_item; |
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| 109 | ei_factory_class->get_item_size = ii_factory_get_item_size; |
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| 110 | } |
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| 111 | |
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| 112 | /* Object initialization function for the icon list item factory */ |
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| 113 | static void |
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| 114 | eog_item_factory_clean_instance_init (EogItemFactoryClean *factory) |
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| 115 | { |
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| 116 | EogItemFactoryCleanPrivate *priv; |
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| 117 | EogCleanMetrics *metrics; |
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| 118 | char stipple_bits[] = { 0x00, 0x01, 0x01, 0x00 }; |
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| 119 | |
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| 120 | priv = g_new0 (EogItemFactoryCleanPrivate, 1); |
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| 121 | |
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| 122 | metrics = g_new0 (EogCleanMetrics, 1); |
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| 123 | metrics->twidth = 96; |
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| 124 | metrics->theight = 96; |
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| 125 | metrics->cspace = 5; |
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| 126 | metrics->cpadding = 2; |
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| 127 | metrics->font_height = 12; |
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| 128 | priv->metrics = metrics; |
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| 129 | |
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| 130 | priv->stipple = gdk_bitmap_create_from_data (NULL, stipple_bits, 2, 2); |
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| 131 | priv->loader = NULL; |
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| 132 | |
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| 133 | factory->priv = priv; |
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| 134 | } |
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| 135 | |
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| 136 | /* Destroy handler for the icon list item factory */ |
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| 137 | static void |
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| 138 | eog_item_factory_clean_dispose (GObject *object) |
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| 139 | { |
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| 140 | EogItemFactoryClean *factory; |
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| 141 | EogItemFactoryCleanPrivate *priv; |
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| 142 | |
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| 143 | g_return_if_fail (object != NULL); |
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| 144 | g_return_if_fail (EOG_IS_ITEM_FACTORY_CLEAN (object)); |
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| 145 | |
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| 146 | factory = EOG_ITEM_FACTORY_CLEAN (object); |
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| 147 | priv = factory->priv; |
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| 148 | |
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| 149 | if (priv->dummy) |
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| 150 | g_object_unref (priv->dummy); |
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| 151 | priv->dummy = NULL; |
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| 152 | |
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| 153 | if (priv->metrics) |
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| 154 | g_free (priv->metrics); |
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| 155 | priv->metrics = NULL; |
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| 156 | |
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| 157 | if (priv->stipple) |
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| 158 | g_object_unref (G_OBJECT (priv->stipple)); |
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| 159 | priv->stipple = NULL; |
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| 160 | |
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| 161 | if (priv->loader) |
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| 162 | g_object_unref (G_OBJECT (priv->loader)); |
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| 163 | priv->loader = NULL; |
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| 164 | |
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| 165 | GNOME_CALL_PARENT (G_OBJECT_CLASS, dispose, (object)); |
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| 166 | } |
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| 167 | |
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| 168 | static void |
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| 169 | eog_item_factory_clean_finalize (GObject *object) |
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| 170 | { |
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| 171 | EogItemFactoryClean *factory; |
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| 172 | |
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| 173 | g_return_if_fail (object != NULL); |
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| 174 | g_return_if_fail (EOG_IS_ITEM_FACTORY_CLEAN (object)); |
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| 175 | |
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| 176 | factory = EOG_ITEM_FACTORY_CLEAN (object); |
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| 177 | g_free (factory->priv); |
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| 178 | |
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| 179 | GNOME_CALL_PARENT (G_OBJECT_CLASS, finalize, (object)); |
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| 180 | } |
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| 181 | |
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| 182 | |
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| 183 | |
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| 184 | static GtkStyle* |
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| 185 | get_style_from_item (GnomeCanvasItem *item) |
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| 186 | { |
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| 187 | return gtk_widget_get_style (GTK_WIDGET (item->canvas)); |
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| 188 | } |
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| 189 | |
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| 190 | |
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| 191 | /* Called when an icon's main group is destroyed */ |
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| 192 | static void |
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| 193 | icon_destroyed (GObject *object, gpointer data) |
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| 194 | { |
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| 195 | IconItem *icon; |
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| 196 | |
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| 197 | icon = (IconItem*)data; |
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| 198 | g_free (icon); |
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| 199 | } |
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| 200 | |
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| 201 | /* Create_item handler for the icon list item factory */ |
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| 202 | static GnomeCanvasItem * |
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| 203 | ii_factory_create_item (EogItemFactory *factory, |
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| 204 | GnomeCanvasGroup *parent, guint unique_id) |
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| 205 | { |
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| 206 | IconItem *icon; |
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| 207 | int width, height; |
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| 208 | int i; |
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| 209 | GtkStyle *style; |
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| 210 | |
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| 211 | g_return_val_if_fail (factory != NULL, NULL); |
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| 212 | g_return_val_if_fail (EOG_IS_ITEM_FACTORY_CLEAN (factory), NULL); |
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| 213 | g_return_val_if_fail (parent != NULL, NULL); |
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| 214 | g_return_val_if_fail (GNOME_IS_CANVAS_GROUP (parent), NULL); |
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| 215 | |
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| 216 | eog_item_factory_get_item_size (EOG_ITEM_FACTORY (factory), &width, &height); |
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| 217 | |
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| 218 | icon = g_new (IconItem, 1); |
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| 219 | |
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| 220 | icon->id = unique_id; |
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| 221 | icon->item = gnome_canvas_item_new (GNOME_CANVAS_GROUP (parent), |
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| 222 | GNOME_TYPE_CANVAS_GROUP, |
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| 223 | NULL); |
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| 224 | |
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| 225 | style = get_style_from_item (icon->item); |
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| 226 | g_assert (style != NULL); |
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| 227 | |
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| 228 | icon->bgr = gnome_canvas_item_new (GNOME_CANVAS_GROUP (icon->item), |
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| 229 | GNOME_TYPE_CANVAS_RECT, |
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| 230 | "x1", 0.0, |
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| 231 | "y1", 0.0, |
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| 232 | "x2", (double) width, |
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| 233 | "y2", (double) height, |
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| 234 | "fill_color_gdk", &style->bg[GTK_STATE_NORMAL], |
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| 235 | NULL); |
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| 236 | |
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| 237 | for (i = 0; i < MAX_CAPTION_LINES; i++) icon->caption_line[i] = NULL; |
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| 238 | icon->cap_rect = NULL; |
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| 239 | icon->image = NULL; |
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| 240 | |
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| 241 | g_object_set_data (G_OBJECT (icon->item), "IconItem", icon); |
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| 242 | g_signal_connect (G_OBJECT (icon->item), "destroy", |
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| 243 | G_CALLBACK (icon_destroyed), |
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| 244 | icon); |
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| 245 | |
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| 246 | return icon->item; |
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| 247 | } |
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| 248 | |
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| 249 | /*********************************************************** |
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| 250 | * |
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| 251 | * Caption Helper Functions |
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| 252 | * |
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| 253 | */ |
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| 254 | |
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| 255 | /* Shrink the string until its pixel width is <= max_width */ |
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| 256 | static char* |
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| 257 | ensure_max_string_width (gchar *str, PangoLayout *layout, int max_width, gchar **tail) |
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| 258 | { |
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| 259 | char *result; |
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| 260 | int len; |
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| 261 | int str_len; |
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| 262 | int str_bytes; |
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[19172] | 263 | gchar* str_pt = NULL; |
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[18659] | 264 | int px_width, px_height; |
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| 265 | |
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| 266 | if (tail != NULL) *tail = NULL; |
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| 267 | |
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| 268 | str_len = g_utf8_strlen (str, -1); |
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| 269 | str_bytes = strlen (str); |
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| 270 | |
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| 271 | pango_layout_set_text (layout, str, str_bytes); |
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| 272 | pango_layout_get_pixel_size (layout, &px_width, &px_height); |
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| 273 | |
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| 274 | if (px_width <= max_width) { |
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| 275 | return g_strdup (str); |
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| 276 | } |
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| 277 | |
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| 278 | len = str_len; |
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| 279 | g_assert (len > 0); |
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| 280 | |
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| 281 | while (px_width > max_width) { |
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| 282 | len--; |
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| 283 | |
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| 284 | if (len <= 0) |
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| 285 | break; |
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| 286 | |
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| 287 | str_pt = g_utf8_offset_to_pointer (str, len); |
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| 288 | |
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| 289 | pango_layout_set_text (layout, str, (int) (str_pt - str)); |
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| 290 | pango_layout_get_pixel_size (layout, &px_width, &px_height); |
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| 291 | } |
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| 292 | |
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| 293 | if (len > 0) { |
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| 294 | result = g_new0 (gchar, 2 * len); |
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| 295 | result = g_utf8_strncpy (result, str, len); |
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| 296 | if (tail != NULL) { |
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| 297 | *tail = g_strdup (str_pt); |
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| 298 | } |
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| 299 | } |
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| 300 | else { |
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| 301 | result = NULL; |
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| 302 | if (tail != NULL) { |
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| 303 | *tail = g_strdup (str); |
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| 304 | } |
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| 305 | } |
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| 306 | |
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| 307 | return result; |
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| 308 | } |
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| 309 | |
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| 310 | static void |
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| 311 | create_item_caption_lines (gchar *str, PangoLayout *layout, int max_width, |
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| 312 | char **line, int n_lines) |
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| 313 | { |
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| 314 | char *remaining; |
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| 315 | int px_width, px_height; |
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| 316 | gchar *tail; |
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| 317 | int l; |
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| 318 | |
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| 319 | g_return_if_fail (n_lines > 1); |
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| 320 | g_return_if_fail (str != NULL); |
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| 321 | |
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| 322 | for (l = 0; l < n_lines; l++) { |
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| 323 | line[l] = NULL; |
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| 324 | } |
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| 325 | |
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| 326 | remaining = g_strdup (str); |
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| 327 | |
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| 328 | for (l = 0; l < n_lines; l++) |
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| 329 | { |
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| 330 | tail = NULL; |
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| 331 | |
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| 332 | pango_layout_set_text (layout, remaining, -1); |
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| 333 | pango_layout_get_pixel_size (layout, &px_width, &px_height); |
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| 334 | |
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| 335 | if (px_width <= max_width) { |
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| 336 | line[l] = remaining; |
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| 337 | remaining = NULL; |
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| 338 | break; |
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| 339 | } |
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| 340 | else { |
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| 341 | line[l] = ensure_max_string_width (remaining, layout, max_width, &tail); |
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| 342 | g_free (remaining); |
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| 343 | remaining = NULL; |
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| 344 | } |
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| 345 | |
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| 346 | if (tail == NULL) |
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| 347 | break; |
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| 348 | else { |
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| 349 | remaining = tail; |
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| 350 | } |
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| 351 | } |
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| 352 | |
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| 353 | if (remaining != NULL) |
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| 354 | g_free (remaining); |
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| 355 | } |
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| 356 | |
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| 357 | static void |
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| 358 | set_caption_text (GnomeCanvasItem *item, |
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| 359 | char *caption, |
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| 360 | int line, |
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| 361 | EogItemFactory *factory, |
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| 362 | PangoLayout *layout) |
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| 363 | { |
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| 364 | GtkStyle *style; |
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| 365 | IconItem *icon; |
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| 366 | EogCleanMetrics *metrics; |
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| 367 | int caption_w, caption_h; |
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| 368 | int caption_x, caption_y; |
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| 369 | int item_w, item_h; |
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| 370 | |
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| 371 | g_return_if_fail (item != NULL); |
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| 372 | |
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| 373 | if (caption == NULL) return; |
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| 374 | |
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| 375 | icon = g_object_get_data (G_OBJECT (item), "IconItem"); |
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| 376 | g_assert (icon != NULL); |
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| 377 | g_return_if_fail (icon->caption_line[line] == NULL); |
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| 378 | |
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| 379 | metrics = EOG_ITEM_FACTORY_CLEAN (factory)->priv->metrics; |
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| 380 | |
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| 381 | pango_layout_set_text (layout, caption, -1); |
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| 382 | pango_layout_get_pixel_size (layout, &caption_w, &caption_h); |
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| 383 | |
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| 384 | eog_item_factory_get_item_size (EOG_ITEM_FACTORY (factory), &item_w, &item_h); |
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| 385 | |
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| 386 | caption_x = (metrics->twidth - caption_w) / 2; |
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| 387 | caption_y = (metrics->theight + metrics->cspace + metrics->cpadding) |
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| 388 | + line * (caption_h + 4); |
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| 389 | |
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| 390 | style = get_style_from_item (item); |
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| 391 | g_assert (style != NULL); |
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| 392 | |
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| 393 | icon->caption_line[line] = gnome_canvas_item_new (GNOME_CANVAS_GROUP (item), |
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| 394 | GNOME_TYPE_CANVAS_TEXT, |
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| 395 | "text", caption, |
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| 396 | "font_desc", style->font_desc, |
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| 397 | "anchor", GTK_ANCHOR_NW, |
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| 398 | "x", (double) caption_x, |
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| 399 | "y", (double) caption_y, |
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| 400 | "fill_color", style->text[GTK_STATE_NORMAL], |
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| 401 | NULL); |
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| 402 | } |
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| 403 | |
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| 404 | /*********************************************************** |
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| 405 | * |
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| 406 | * Update Functions |
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| 407 | * |
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| 408 | */ |
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| 409 | |
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| 410 | static void |
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| 411 | update_item_image (EogItemFactoryClean *factory, GnomeCanvasItem *item, CImage *cimage) |
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| 412 | { |
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| 413 | EogItemFactoryCleanPrivate *priv; |
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| 414 | EogCleanMetrics *metrics; |
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| 415 | IconItem *icon; |
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| 416 | int image_w, image_h; |
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| 417 | int image_x, image_y; |
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| 418 | GdkPixbuf *thumb = NULL; |
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| 419 | gboolean start_thumb_creation = FALSE; |
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| 420 | |
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| 421 | metrics = factory->priv->metrics; |
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| 422 | priv = factory->priv; |
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| 423 | |
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| 424 | #if FACTORY_DEBUG |
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| 425 | g_message ("update_item_image - id:%i", cimage_get_unique_id (cimage)); |
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| 426 | #endif |
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| 427 | |
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| 428 | icon = g_object_get_data (G_OBJECT (item), "IconItem"); |
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| 429 | g_assert (icon != NULL); |
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| 430 | |
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| 431 | /* obtain thumbnail image */ |
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| 432 | if (cimage_has_thumbnail (cimage)) { |
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| 433 | #if FACTORY_DEBUG |
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| 434 | g_message (" ** have thumbnail - id:%i", cimage_get_unique_id (cimage)); |
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| 435 | #endif |
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| 436 | thumb = cimage_get_thumbnail (cimage); |
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| 437 | } |
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| 438 | else if (priv->dummy != NULL) { /* priv->dummy should be always valid, only in case |
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| 439 | of destroying the factory object this may |
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| 440 | be NULL. */ |
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| 441 | thumb = priv->dummy; |
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| 442 | g_object_ref (thumb); |
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| 443 | |
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| 444 | if (!cimage_has_loading_failed (cimage)) { |
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| 445 | start_thumb_creation = TRUE; |
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| 446 | #if FACTORY_DEBUG |
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| 447 | g_message (" ** start thumbnail creation - id:%i", cimage_get_unique_id (cimage)); |
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| 448 | #endif |
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| 449 | g_object_set_data (G_OBJECT (cimage), "CanvasItem", item); |
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| 450 | } |
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| 451 | } |
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| 452 | |
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| 453 | if (thumb == NULL) { |
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| 454 | /* This may happen if we destroy the factory object. */ |
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| 455 | return; |
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| 456 | } |
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| 457 | |
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| 458 | if (icon->image != NULL) { |
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| 459 | gtk_object_destroy (GTK_OBJECT (icon->image)); |
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| 460 | } |
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| 461 | |
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| 462 | image_w = gdk_pixbuf_get_width (thumb); |
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| 463 | image_h = gdk_pixbuf_get_height (thumb); |
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| 464 | image_x = (metrics->twidth - image_w) / 2; |
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| 465 | image_y = (metrics->theight - image_h) / 2; |
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| 466 | |
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| 467 | icon->image = gnome_canvas_item_new (GNOME_CANVAS_GROUP (item), |
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| 468 | GNOME_TYPE_CANVAS_PIXBUF, |
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| 469 | "pixbuf", thumb, |
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| 470 | "x", (double) image_x, |
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| 471 | "y", (double) image_y, |
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| 472 | "width_set", FALSE, |
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| 473 | "height_set", FALSE, |
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| 474 | NULL); |
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| 475 | |
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| 476 | g_object_unref (thumb); |
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| 477 | |
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| 478 | if (start_thumb_creation) { |
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| 479 | eog_image_loader_start (EOG_IMAGE_LOADER (priv->loader), cimage); |
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| 480 | } |
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| 481 | } |
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| 482 | |
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| 483 | static void |
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| 484 | update_item_caption (EogItemFactoryClean *factory, GnomeCanvasItem *item, CImage *cimage) |
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| 485 | { |
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| 486 | PangoLayout *layout; |
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| 487 | IconItem *icon; |
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| 488 | gchar *caption[MAX_CAPTION_LINES]; |
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| 489 | gchar *full_caption; |
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| 490 | EogCleanMetrics *metrics; |
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| 491 | int i; |
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| 492 | double x1, y1, x2, y2; |
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| 493 | double left, right, top, bottom; |
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| 494 | |
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| 495 | if (!cimage_has_caption (cimage)) return; |
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| 496 | |
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| 497 | /* obtain some objects */ |
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| 498 | metrics = factory->priv->metrics; |
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| 499 | |
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| 500 | icon = g_object_get_data (G_OBJECT (item), "IconItem"); |
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| 501 | g_assert (icon != NULL); |
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| 502 | |
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| 503 | layout = gtk_widget_create_pango_layout (GTK_WIDGET (item->canvas), NULL); |
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| 504 | g_assert (layout != NULL); |
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| 505 | |
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| 506 | /* obtain caption text */ |
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| 507 | full_caption = cimage_get_caption (cimage); |
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| 508 | g_assert (full_caption != NULL); |
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| 509 | |
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| 510 | /* spread caption over two text lines, if neccessary */ |
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| 511 | for (i = 0; i < MAX_CAPTION_LINES; i++) { |
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| 512 | caption[i] = NULL; |
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| 513 | } |
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| 514 | create_item_caption_lines (full_caption, layout, |
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| 515 | metrics->twidth - 2 * metrics->cpadding, |
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| 516 | caption, MAX_CAPTION_LINES); |
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| 517 | |
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| 518 | /* setup canvas text items */ |
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| 519 | for (i = 0; i < MAX_CAPTION_LINES; i++) { |
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| 520 | if (icon->caption_line[i] != NULL) { |
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| 521 | gtk_object_destroy (GTK_OBJECT (icon->caption_line[i])); |
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| 522 | icon->caption_line[i] = NULL; |
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| 523 | } |
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| 524 | |
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| 525 | set_caption_text (item, caption[i], i, EOG_ITEM_FACTORY (factory), layout); |
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| 526 | g_free (caption[i]); |
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| 527 | } |
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| 528 | |
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| 529 | /* setup text selection item */ |
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| 530 | left = top = 10000.0; |
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| 531 | right = bottom = 0; |
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| 532 | |
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| 533 | for (i = 0; i < MAX_CAPTION_LINES; i++) { |
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| 534 | if (icon->caption_line[i] != NULL) { |
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| 535 | gnome_canvas_item_get_bounds (icon->caption_line[i], |
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| 536 | &x1, &y1, &x2, &y2); |
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| 537 | left = MIN (left, x1); |
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| 538 | right = MAX (right, x2); |
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| 539 | top = MIN (top, y1); |
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| 540 | bottom = MAX (bottom, y2); |
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| 541 | } |
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| 542 | } |
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| 543 | |
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| 544 | left = left - metrics->cpadding; |
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| 545 | right = right + metrics->cpadding; |
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| 546 | top = top - metrics->cpadding ; |
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| 547 | bottom = bottom + metrics->cpadding; |
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| 548 | |
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| 549 | if (icon->cap_rect != NULL) |
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| 550 | gtk_object_destroy (GTK_OBJECT (icon->cap_rect)); |
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| 551 | |
---|
| 552 | icon->cap_rect = gnome_canvas_item_new (GNOME_CANVAS_GROUP (item), |
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| 553 | GNOME_TYPE_CANVAS_RECT, |
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| 554 | "x1", left, |
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| 555 | "y1", top, |
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| 556 | "x2", right, |
---|
| 557 | "y2", bottom, |
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| 558 | "fill_color", "LightSteelBlue2", |
---|
| 559 | "outline_color", "Blue", |
---|
| 560 | "width_pixels", 2, |
---|
| 561 | "outline_stipple", factory->priv->stipple, |
---|
| 562 | NULL); |
---|
| 563 | gnome_canvas_item_hide (GNOME_CANVAS_ITEM (icon->cap_rect)); |
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| 564 | |
---|
| 565 | for (i = 0; i < MAX_CAPTION_LINES; i++) { |
---|
| 566 | if (icon->caption_line[i] != NULL) |
---|
| 567 | gnome_canvas_item_raise_to_top (GNOME_CANVAS_ITEM (icon->caption_line[i])); |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | /* clean up */ |
---|
| 571 | g_object_unref (layout); |
---|
| 572 | g_free (full_caption); |
---|
| 573 | } |
---|
| 574 | |
---|
| 575 | |
---|
| 576 | static void |
---|
| 577 | update_item_selection (EogItemFactoryClean *factory, GnomeCanvasItem *item, CImage *cimage) |
---|
| 578 | { |
---|
| 579 | IconItem *icon; |
---|
| 580 | icon = g_object_get_data (G_OBJECT (item), "IconItem"); |
---|
| 581 | g_assert (icon != NULL); |
---|
| 582 | |
---|
| 583 | if (icon->cap_rect == NULL) return; |
---|
| 584 | |
---|
| 585 | if (cimage_is_selected (cimage)) { |
---|
| 586 | gnome_canvas_item_show (GNOME_CANVAS_ITEM (icon->cap_rect)); |
---|
| 587 | } |
---|
| 588 | else { |
---|
| 589 | gnome_canvas_item_hide (GNOME_CANVAS_ITEM (icon->cap_rect)); |
---|
| 590 | } |
---|
| 591 | } |
---|
| 592 | |
---|
| 593 | /* Configure_item handler for the icon list item factory */ |
---|
| 594 | static void |
---|
| 595 | ii_factory_update_item (EogItemFactory *factory, |
---|
| 596 | EogCollectionModel *model, |
---|
| 597 | GnomeCanvasItem *item, |
---|
| 598 | EogItemUpdateHint hint) |
---|
| 599 | { |
---|
| 600 | EogItemFactoryClean *ii_factory; |
---|
| 601 | CImage *cimage = NULL; |
---|
| 602 | IconItem *icon; |
---|
| 603 | |
---|
| 604 | g_return_if_fail (factory != NULL); |
---|
| 605 | g_return_if_fail (EOG_IS_ITEM_FACTORY_CLEAN (factory)); |
---|
| 606 | g_return_if_fail (item != NULL); |
---|
| 607 | g_return_if_fail (GNOME_IS_CANVAS_ITEM (item)); |
---|
| 608 | g_return_if_fail (model != NULL); |
---|
| 609 | g_return_if_fail (EOG_IS_COLLECTION_MODEL (model)); |
---|
| 610 | |
---|
| 611 | ii_factory = EOG_ITEM_FACTORY_CLEAN (factory); |
---|
| 612 | |
---|
| 613 | icon = g_object_get_data (G_OBJECT (item), "IconItem"); |
---|
| 614 | cimage = eog_collection_model_get_image (model, icon->id); |
---|
| 615 | g_return_if_fail (cimage != NULL); |
---|
| 616 | |
---|
| 617 | if ((hint & EOG_ITEM_UPDATE_IMAGE) == EOG_ITEM_UPDATE_IMAGE) { |
---|
| 618 | update_item_image (ii_factory, item, cimage); |
---|
| 619 | } |
---|
| 620 | |
---|
| 621 | if ((hint & EOG_ITEM_UPDATE_CAPTION) == EOG_ITEM_UPDATE_CAPTION) { |
---|
| 622 | update_item_caption (ii_factory, item, cimage); |
---|
| 623 | } |
---|
| 624 | |
---|
| 625 | if ((hint & EOG_ITEM_UPDATE_SELECTION_STATE) == EOG_ITEM_UPDATE_SELECTION_STATE) { |
---|
| 626 | update_item_selection (ii_factory, item, cimage); |
---|
| 627 | } |
---|
| 628 | } |
---|
| 629 | |
---|
| 630 | |
---|
| 631 | /*********************************************************** |
---|
| 632 | * |
---|
| 633 | * EogItemFactory API functions |
---|
| 634 | * |
---|
| 635 | */ |
---|
| 636 | |
---|
| 637 | /* Get_item_size handler for the icon list item factory */ |
---|
| 638 | static void |
---|
| 639 | ii_factory_get_item_size (EogItemFactory *factory, |
---|
| 640 | gint *width, gint *height) |
---|
| 641 | { |
---|
| 642 | EogItemFactoryClean *ii_factory; |
---|
| 643 | EogCleanMetrics *metrics; |
---|
| 644 | |
---|
| 645 | g_return_if_fail (factory != NULL); |
---|
| 646 | g_return_if_fail (EOG_IS_ITEM_FACTORY_CLEAN (factory)); |
---|
| 647 | |
---|
| 648 | ii_factory = EOG_ITEM_FACTORY_CLEAN (factory); |
---|
| 649 | metrics = ii_factory->priv->metrics; |
---|
| 650 | |
---|
| 651 | *width = metrics->twidth; |
---|
| 652 | *height = metrics->theight /* height of the image */ |
---|
| 653 | + 2 * metrics->cpadding /* padding around the caption */ |
---|
| 654 | + metrics->cspace /* space between caption and image */ |
---|
| 655 | + 2 * metrics->font_height /* caption height */ |
---|
| 656 | + 4; /* padding between caption lines */ |
---|
| 657 | } |
---|
| 658 | |
---|
| 659 | static void |
---|
| 660 | image_loading_finished_cb (EogImageLoader *loader, CImage *image, EogItemFactoryClean *factory) |
---|
| 661 | { |
---|
| 662 | GnomeCanvasItem *item; |
---|
| 663 | |
---|
| 664 | #if FACTORY_DEBUG |
---|
| 665 | g_message ("image_loading_finished - id:%i", cimage_get_unique_id (image)); |
---|
| 666 | #endif |
---|
| 667 | |
---|
| 668 | if (IS_CIMAGE (image)) { |
---|
| 669 | item = (GnomeCanvasItem*) g_object_get_data (G_OBJECT (image), "CanvasItem"); |
---|
| 670 | update_item_image (factory, item, image); |
---|
| 671 | } |
---|
| 672 | } |
---|
| 673 | |
---|
| 674 | static void |
---|
| 675 | image_loading_failed_cb (EogImageLoader *loader, CImage *image, EogItemFactoryClean *factory) |
---|
| 676 | { |
---|
| 677 | GnomeCanvasItem *item; |
---|
| 678 | |
---|
| 679 | if (IS_CIMAGE (image)) { |
---|
| 680 | cimage_set_loading_failed (image); |
---|
| 681 | item = (GnomeCanvasItem*) g_object_get_data (G_OBJECT (image), "CanvasItem"); |
---|
| 682 | update_item_image (factory, item, image); |
---|
| 683 | } |
---|
| 684 | } |
---|
| 685 | |
---|
| 686 | static EogItemFactoryClean* |
---|
| 687 | eog_item_factory_clean_construct (EogItemFactoryClean *factory, EogImageLoader *loader) |
---|
| 688 | { |
---|
| 689 | EogItemFactoryCleanPrivate *priv; |
---|
| 690 | char *dummy_file; |
---|
| 691 | |
---|
| 692 | priv = factory->priv; |
---|
| 693 | |
---|
| 694 | /* load dummy pixmap file */ |
---|
| 695 | dummy_file = gnome_program_locate_file (NULL, GNOME_FILE_DOMAIN_PIXMAP, |
---|
| 696 | "gnome-eog.png", TRUE, NULL); |
---|
| 697 | priv->dummy = gdk_pixbuf_new_from_file (dummy_file, NULL); |
---|
| 698 | g_free (dummy_file); |
---|
| 699 | |
---|
| 700 | /* image loader setup */ |
---|
| 701 | priv->loader = loader; |
---|
| 702 | if (loader != NULL) { |
---|
| 703 | g_signal_connect (G_OBJECT (loader), "loading_finished", |
---|
| 704 | G_CALLBACK (image_loading_finished_cb), factory); |
---|
| 705 | g_signal_connect (G_OBJECT (loader), "loading_canceled", |
---|
| 706 | G_CALLBACK (image_loading_failed_cb), factory); |
---|
| 707 | g_signal_connect (G_OBJECT (loader), "loading_failed", |
---|
| 708 | G_CALLBACK (image_loading_failed_cb), factory); |
---|
| 709 | g_object_ref (priv->loader); |
---|
| 710 | } |
---|
| 711 | |
---|
| 712 | return factory; |
---|
| 713 | } |
---|
| 714 | |
---|
| 715 | |
---|
| 716 | EogItemFactoryClean * |
---|
| 717 | eog_item_factory_clean_new (EogImageLoader *loader) |
---|
| 718 | { |
---|
| 719 | EogItemFactoryClean *factory; |
---|
| 720 | |
---|
| 721 | factory = EOG_ITEM_FACTORY_CLEAN (g_object_new (EOG_TYPE_ITEM_FACTORY_CLEAN, NULL)); |
---|
| 722 | return eog_item_factory_clean_construct (factory, loader); |
---|
| 723 | } |
---|
| 724 | |
---|
| 725 | /** |
---|
| 726 | * eog_item_factory_clean_set_item_metrics: |
---|
| 727 | * @factory: An icon list item factory. |
---|
| 728 | * @item_width: Total width of items, in pixels. |
---|
| 729 | * @item_height: Total height of items, in pixels. |
---|
| 730 | * @image_width: Maximum width of images for icons, in pixels. |
---|
| 731 | * @image_height: Maximum height of images for icons, in pixels. |
---|
| 732 | * |
---|
| 733 | * Sets the metrics of the items that will be created in the future by an icon |
---|
| 734 | * list item factory. This includes the total size of items and the maximum |
---|
| 735 | * size of icon images. |
---|
| 736 | **/ |
---|
| 737 | void |
---|
| 738 | eog_item_factory_clean_set_metrics (EogItemFactoryClean *factory, |
---|
| 739 | EogCleanMetrics *metrics) |
---|
| 740 | { |
---|
| 741 | EogItemFactoryCleanPrivate *priv; |
---|
| 742 | |
---|
| 743 | g_return_if_fail (factory != NULL); |
---|
| 744 | g_return_if_fail (EOG_IS_ITEM_FACTORY_CLEAN (factory)); |
---|
| 745 | |
---|
| 746 | priv = factory->priv; |
---|
| 747 | |
---|
| 748 | if (priv->metrics) |
---|
| 749 | g_free (priv->metrics); |
---|
| 750 | |
---|
| 751 | priv->metrics = metrics; |
---|
| 752 | |
---|
| 753 | eog_item_factory_configuration_changed (EOG_ITEM_FACTORY (factory)); |
---|
| 754 | } |
---|
| 755 | |
---|
| 756 | EogCleanMetrics* |
---|
| 757 | eog_item_factory_clean_get_metrics (EogItemFactoryClean *factory) |
---|
| 758 | { |
---|
| 759 | g_return_val_if_fail (factory != NULL, NULL); |
---|
| 760 | g_return_val_if_fail (EOG_IS_ITEM_FACTORY_CLEAN (factory), NULL); |
---|
| 761 | |
---|
| 762 | return factory->priv->metrics; |
---|
| 763 | } |
---|