1 | /* Eye of Gnome - default item factory for icons |
---|
2 | * |
---|
3 | * Copyright (C) 2000-2002 The Free Software Foundation |
---|
4 | * |
---|
5 | * Author: Federico Mena-Quintero <federico@gnu.org> |
---|
6 | * Jens Finke <jens@gnome.org> |
---|
7 | * |
---|
8 | * This program is free software; you can redistribute it and/or modify |
---|
9 | * it under the terms of the GNU General Public License as published by |
---|
10 | * the Free Software Foundation; either version 2 of the License, or |
---|
11 | * (at your option) any later version. |
---|
12 | * |
---|
13 | * This program is distributed in the hope that it will be useful, |
---|
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
16 | * GNU General Public License for more details. |
---|
17 | * |
---|
18 | * You should have received a copy of the GNU General Public License |
---|
19 | * along with this program; if not, write to the Free Software |
---|
20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
---|
21 | */ |
---|
22 | |
---|
23 | #include <config.h> |
---|
24 | #include <pango/pango-layout.h> |
---|
25 | #include <gtk/gtksignal.h> |
---|
26 | #include <libgnome/gnome-macros.h> |
---|
27 | #include <libgnomecanvas/gnome-canvas-pixbuf.h> |
---|
28 | #include <libgnomecanvas/gnome-canvas-rect-ellipse.h> |
---|
29 | #include <libgnomecanvas/gnome-canvas-text.h> |
---|
30 | #include <libgnomevfs/gnome-vfs-types.h> |
---|
31 | #include <libgnomevfs/gnome-vfs-uri.h> |
---|
32 | #include "eog-item-factory-simple.h" |
---|
33 | #include "eog-collection-model.h" |
---|
34 | #include "cimage.h" |
---|
35 | #include <math.h> |
---|
36 | |
---|
37 | |
---|
38 | /* Private part of the EogItemFactorySimple structure */ |
---|
39 | struct _EogItemFactorySimplePrivate { |
---|
40 | /* item metrics */ |
---|
41 | EogSimpleMetrics *metrics; |
---|
42 | |
---|
43 | /* default pixmap if the image is not loaded so far */ |
---|
44 | GdkPixbuf *dummy; |
---|
45 | |
---|
46 | GdkPixbuf *shaded_bgr; |
---|
47 | }; |
---|
48 | |
---|
49 | |
---|
50 | |
---|
51 | /* Icon item structure */ |
---|
52 | typedef struct { |
---|
53 | /* unique id */ |
---|
54 | guint id; |
---|
55 | |
---|
56 | /* Base group */ |
---|
57 | GnomeCanvasItem *item; |
---|
58 | |
---|
59 | /* Icon image and its selection rectangle */ |
---|
60 | GnomeCanvasItem *image; |
---|
61 | |
---|
62 | /* Caption and its selection and focus rectangles */ |
---|
63 | GnomeCanvasItem *caption; |
---|
64 | |
---|
65 | /* border */ |
---|
66 | GnomeCanvasItem *border; |
---|
67 | |
---|
68 | /* image background */ |
---|
69 | GnomeCanvasItem *bgr; |
---|
70 | } IconItem; |
---|
71 | |
---|
72 | |
---|
73 | |
---|
74 | static void eog_item_factory_simple_class_init (EogItemFactorySimpleClass *class); |
---|
75 | static void eog_item_factory_simple_instance_init (EogItemFactorySimple *factory); |
---|
76 | static void eog_item_factory_simple_dispose (GObject *object); |
---|
77 | static void eog_item_factory_simple_finalize (GObject *object); |
---|
78 | static EogItemFactorySimple* eog_item_factory_simple_construct (EogItemFactorySimple *factory); |
---|
79 | |
---|
80 | static GnomeCanvasItem *ii_factory_create_item (EogItemFactory *factory, |
---|
81 | GnomeCanvasGroup *parent, guint id); |
---|
82 | static void ii_factory_update_item (EogItemFactory *factory, |
---|
83 | EogCollectionModel *model, |
---|
84 | GnomeCanvasItem *item, |
---|
85 | EogItemUpdateHint hint); |
---|
86 | static void ii_factory_get_item_size (EogItemFactory *factory, |
---|
87 | gint *width, gint *height); |
---|
88 | |
---|
89 | GNOME_CLASS_BOILERPLATE (EogItemFactorySimple, eog_item_factory_simple, |
---|
90 | EogItemFactory, EOG_TYPE_ITEM_FACTORY); |
---|
91 | |
---|
92 | /* Class initialization function for the icon list item factory */ |
---|
93 | static void |
---|
94 | eog_item_factory_simple_class_init (EogItemFactorySimpleClass *class) |
---|
95 | { |
---|
96 | GObjectClass *object_class; |
---|
97 | EogItemFactoryClass *ei_factory_class; |
---|
98 | |
---|
99 | object_class = (GObjectClass *) class; |
---|
100 | ei_factory_class = (EogItemFactoryClass *) class; |
---|
101 | |
---|
102 | object_class->dispose = eog_item_factory_simple_dispose; |
---|
103 | object_class->finalize = eog_item_factory_simple_finalize; |
---|
104 | |
---|
105 | ei_factory_class->create_item = ii_factory_create_item; |
---|
106 | ei_factory_class->update_item = ii_factory_update_item; |
---|
107 | ei_factory_class->get_item_size = ii_factory_get_item_size; |
---|
108 | } |
---|
109 | |
---|
110 | /* Object initialization function for the icon list item factory */ |
---|
111 | static void |
---|
112 | eog_item_factory_simple_instance_init (EogItemFactorySimple *factory) |
---|
113 | { |
---|
114 | EogItemFactorySimplePrivate *priv; |
---|
115 | EogSimpleMetrics *metrics; |
---|
116 | |
---|
117 | priv = g_new0 (EogItemFactorySimplePrivate, 1); |
---|
118 | |
---|
119 | metrics = g_new0 (EogSimpleMetrics, 1); |
---|
120 | metrics->twidth = 92; |
---|
121 | metrics->theight = 69; |
---|
122 | metrics->cspace = 10; |
---|
123 | metrics->border = 5; |
---|
124 | priv->metrics = metrics; |
---|
125 | |
---|
126 | factory->priv = priv; |
---|
127 | } |
---|
128 | |
---|
129 | /* Destroy handler for the icon list item factory */ |
---|
130 | static void |
---|
131 | eog_item_factory_simple_dispose (GObject *object) |
---|
132 | { |
---|
133 | EogItemFactorySimple *factory; |
---|
134 | EogItemFactorySimplePrivate *priv; |
---|
135 | |
---|
136 | g_return_if_fail (object != NULL); |
---|
137 | g_return_if_fail (EOG_IS_ITEM_FACTORY_SIMPLE (object)); |
---|
138 | |
---|
139 | factory = EOG_ITEM_FACTORY_SIMPLE (object); |
---|
140 | priv = factory->priv; |
---|
141 | |
---|
142 | if (priv->dummy) |
---|
143 | g_object_unref (priv->dummy); |
---|
144 | priv->dummy = NULL; |
---|
145 | |
---|
146 | if (priv->metrics) |
---|
147 | g_free (priv->metrics); |
---|
148 | priv->metrics = NULL; |
---|
149 | |
---|
150 | if (priv->shaded_bgr) |
---|
151 | g_object_unref (priv->shaded_bgr); |
---|
152 | priv->shaded_bgr = NULL; |
---|
153 | |
---|
154 | GNOME_CALL_PARENT (G_OBJECT_CLASS, dispose, (object)); |
---|
155 | } |
---|
156 | |
---|
157 | static void |
---|
158 | eog_item_factory_simple_finalize (GObject *object) |
---|
159 | { |
---|
160 | EogItemFactorySimple *factory; |
---|
161 | |
---|
162 | g_return_if_fail (object != NULL); |
---|
163 | g_return_if_fail (EOG_IS_ITEM_FACTORY_SIMPLE (object)); |
---|
164 | |
---|
165 | factory = EOG_ITEM_FACTORY_SIMPLE (object); |
---|
166 | g_free (factory->priv); |
---|
167 | |
---|
168 | GNOME_CALL_PARENT (G_OBJECT_CLASS, finalize, (object)); |
---|
169 | } |
---|
170 | |
---|
171 | |
---|
172 | |
---|
173 | /* Default signal handlers */ |
---|
174 | |
---|
175 | /* Called when an icon's main group is destroyed */ |
---|
176 | static void |
---|
177 | icon_destroyed (GObject *object, gpointer data) |
---|
178 | { |
---|
179 | IconItem *icon; |
---|
180 | |
---|
181 | icon = (IconItem*)data; |
---|
182 | g_free (icon); |
---|
183 | } |
---|
184 | |
---|
185 | /* Create_item handler for the icon list item factory */ |
---|
186 | static GnomeCanvasItem * |
---|
187 | ii_factory_create_item (EogItemFactory *factory, |
---|
188 | GnomeCanvasGroup *parent, guint unique_id) |
---|
189 | { |
---|
190 | IconItem *icon; |
---|
191 | |
---|
192 | g_return_val_if_fail (factory != NULL, NULL); |
---|
193 | g_return_val_if_fail (EOG_IS_ITEM_FACTORY_SIMPLE (factory), NULL); |
---|
194 | g_return_val_if_fail (parent != NULL, NULL); |
---|
195 | g_return_val_if_fail (GNOME_IS_CANVAS_GROUP (parent), NULL); |
---|
196 | |
---|
197 | icon = g_new (IconItem, 1); |
---|
198 | |
---|
199 | icon->id = unique_id; |
---|
200 | icon->item = gnome_canvas_item_new (parent, |
---|
201 | GNOME_TYPE_CANVAS_GROUP, |
---|
202 | "x", 0.0, |
---|
203 | "y", 0.0, |
---|
204 | NULL); |
---|
205 | g_object_set_data (G_OBJECT (icon->item), "IconItem", icon); |
---|
206 | g_signal_connect (G_OBJECT (icon->item), "destroy", |
---|
207 | G_CALLBACK (icon_destroyed), |
---|
208 | icon); |
---|
209 | |
---|
210 | /* Border */ |
---|
211 | icon->border = gnome_canvas_item_new (GNOME_CANVAS_GROUP (icon->item), |
---|
212 | GNOME_TYPE_CANVAS_RECT, |
---|
213 | NULL); |
---|
214 | |
---|
215 | /* background */ |
---|
216 | icon->bgr = gnome_canvas_item_new (GNOME_CANVAS_GROUP (icon->item), |
---|
217 | GNOME_TYPE_CANVAS_PIXBUF, |
---|
218 | NULL); |
---|
219 | |
---|
220 | /* Image */ |
---|
221 | icon->image = gnome_canvas_item_new (GNOME_CANVAS_GROUP (icon->item), |
---|
222 | GNOME_TYPE_CANVAS_PIXBUF, |
---|
223 | NULL); |
---|
224 | /* Caption */ |
---|
225 | icon->caption = gnome_canvas_item_new (GNOME_CANVAS_GROUP (icon->item), |
---|
226 | GNOME_TYPE_CANVAS_TEXT, |
---|
227 | NULL); |
---|
228 | |
---|
229 | return icon->item; |
---|
230 | } |
---|
231 | |
---|
232 | #if 0 |
---|
233 | /* Converts a GdkColor's RGB fields into a packed color integer */ |
---|
234 | static guint |
---|
235 | color_to_rgba (GdkColor *color) |
---|
236 | { |
---|
237 | return (((color->red & 0xff00) << 16) |
---|
238 | | ((color->green & 0xff00) << 8) |
---|
239 | | (color->blue & 0xff00) |
---|
240 | | 0xff); |
---|
241 | } |
---|
242 | #endif |
---|
243 | |
---|
244 | static void |
---|
245 | create_shaded_background (GdkPixbuf *pbf) |
---|
246 | { |
---|
247 | int width, height; |
---|
248 | double dl; |
---|
249 | double tmp; |
---|
250 | int x, y; |
---|
251 | int n_cols; |
---|
252 | int cvd = 5; /* color value decrement */ |
---|
253 | int light = 230; /* gray value */ |
---|
254 | int dark = 150; /* gray value */ |
---|
255 | int ppc; /* pixels per color */ |
---|
256 | guchar *buf; |
---|
257 | |
---|
258 | g_return_if_fail (pbf != NULL); |
---|
259 | |
---|
260 | width = gdk_pixbuf_get_width (pbf); |
---|
261 | height = gdk_pixbuf_get_height (pbf); |
---|
262 | buf = gdk_pixbuf_get_pixels (pbf); |
---|
263 | |
---|
264 | tmp = width*width + height*height; |
---|
265 | dl = sqrt (tmp); |
---|
266 | |
---|
267 | n_cols = (light - dark)/cvd; |
---|
268 | ppc = dl / n_cols; |
---|
269 | |
---|
270 | for (y = 0; y < height; y++) { |
---|
271 | gint color; |
---|
272 | gint ppcy; /* pixels per color yet */ |
---|
273 | |
---|
274 | color = light - (cvd * (y/ppc)); |
---|
275 | ppcy = y % ppc; |
---|
276 | |
---|
277 | for (x = 0; x < width; x++) { |
---|
278 | *buf = color; |
---|
279 | *(buf+1) = color; |
---|
280 | *(buf+2) = color; |
---|
281 | buf += 3; |
---|
282 | |
---|
283 | ppcy++; |
---|
284 | if (ppcy == ppc) { |
---|
285 | ppcy = 0; |
---|
286 | color = color - cvd; |
---|
287 | } |
---|
288 | } |
---|
289 | } |
---|
290 | } |
---|
291 | |
---|
292 | /* Shrink the string until its pixel width is <= max_width */ |
---|
293 | static char* |
---|
294 | ensure_max_caption_width (gchar *str, PangoLayout *layout, int max_width) |
---|
295 | { |
---|
296 | char *result; |
---|
297 | char *buffer; |
---|
298 | const char *dots = "..."; |
---|
299 | int dot_width; |
---|
300 | int len; |
---|
301 | int str_len; |
---|
302 | int px_width, px_height; |
---|
303 | |
---|
304 | pango_layout_set_text (layout, str, -1); |
---|
305 | pango_layout_get_pixel_size (layout, &px_width, &px_height); |
---|
306 | |
---|
307 | if (px_width < max_width) return g_strdup (str); |
---|
308 | |
---|
309 | pango_layout_set_text (layout, dots, -1); |
---|
310 | pango_layout_get_pixel_size (layout, &dot_width, &px_height); |
---|
311 | |
---|
312 | buffer = g_strdup (str); |
---|
313 | str_len = g_utf8_strlen (str, -1); |
---|
314 | len = str_len; |
---|
315 | g_assert (len > 0); |
---|
316 | |
---|
317 | while (px_width > (max_width - dot_width)) { |
---|
318 | len--; |
---|
319 | |
---|
320 | if (len > 0) { |
---|
321 | g_free (buffer); |
---|
322 | buffer = g_new0 (gchar, str_len); |
---|
323 | buffer = g_utf8_strncpy (buffer, str, len); |
---|
324 | } |
---|
325 | else { |
---|
326 | break; |
---|
327 | } |
---|
328 | |
---|
329 | pango_layout_set_text (layout, buffer, -1); |
---|
330 | pango_layout_get_pixel_size (layout, &px_width, &px_height); |
---|
331 | } |
---|
332 | |
---|
333 | result = g_strconcat (buffer, dots, NULL); |
---|
334 | g_free (buffer); |
---|
335 | |
---|
336 | return result; |
---|
337 | } |
---|
338 | |
---|
339 | static void |
---|
340 | update_item_image (EogItemFactorySimple *factory, GnomeCanvasItem *item, CImage *cimage) |
---|
341 | { |
---|
342 | EogItemFactorySimplePrivate *priv; |
---|
343 | EogSimpleMetrics *metrics; |
---|
344 | IconItem *icon; |
---|
345 | int image_w, image_h; |
---|
346 | int image_x, image_y; |
---|
347 | double x1, y1; |
---|
348 | GdkPixbuf *thumb; |
---|
349 | |
---|
350 | metrics = factory->priv->metrics; |
---|
351 | priv = factory->priv; |
---|
352 | |
---|
353 | icon = g_object_get_data (G_OBJECT (item), "IconItem"); |
---|
354 | g_assert (icon != NULL); |
---|
355 | |
---|
356 | /* obtain thumbnail image */ |
---|
357 | if (cimage_has_thumbnail (cimage)) { |
---|
358 | thumb = cimage_get_thumbnail (cimage); |
---|
359 | image_w = gdk_pixbuf_get_width (thumb); |
---|
360 | image_h = gdk_pixbuf_get_height (thumb); |
---|
361 | } |
---|
362 | else { |
---|
363 | thumb = priv->dummy; |
---|
364 | g_object_ref (thumb); |
---|
365 | image_w = gdk_pixbuf_get_width (thumb); |
---|
366 | image_h = gdk_pixbuf_get_height (thumb); |
---|
367 | } |
---|
368 | g_assert (thumb != NULL); |
---|
369 | |
---|
370 | /* Configure image */ |
---|
371 | image_x = metrics->border + (metrics->twidth - image_w) / 2; |
---|
372 | image_y = metrics->border + (metrics->theight - image_h) / 2; |
---|
373 | |
---|
374 | gnome_canvas_item_set (icon->image, |
---|
375 | "pixbuf", thumb, |
---|
376 | "x", (double) image_x, |
---|
377 | "y", (double) image_y, |
---|
378 | "width_set", FALSE, |
---|
379 | "height_set", FALSE, |
---|
380 | NULL); |
---|
381 | |
---|
382 | /* configure background */ |
---|
383 | x1 = metrics->border; |
---|
384 | y1 = metrics->border; |
---|
385 | #if 0 |
---|
386 | x2 = x1 + metrics->twidth; |
---|
387 | y2 = y1 + metrics->theight; |
---|
388 | #endif |
---|
389 | |
---|
390 | gnome_canvas_item_set (icon->bgr, |
---|
391 | "pixbuf", priv->shaded_bgr, |
---|
392 | "x", (double) x1, |
---|
393 | "y", (double) y1, |
---|
394 | "width_set", FALSE, |
---|
395 | "height_set", FALSE, |
---|
396 | NULL); |
---|
397 | |
---|
398 | g_object_unref (thumb); |
---|
399 | } |
---|
400 | |
---|
401 | static void |
---|
402 | update_item_caption (EogItemFactorySimple *factory, GnomeCanvasItem *item, CImage *cimage) |
---|
403 | { |
---|
404 | GtkStyle *style; |
---|
405 | PangoLayout *layout; |
---|
406 | IconItem *icon; |
---|
407 | gchar *caption; |
---|
408 | gchar *temp; |
---|
409 | EogSimpleMetrics *metrics; |
---|
410 | int caption_h; |
---|
411 | int caption_w; |
---|
412 | int caption_x; |
---|
413 | int caption_y; |
---|
414 | |
---|
415 | icon = g_object_get_data (G_OBJECT (item), "IconItem"); |
---|
416 | g_assert (icon != NULL); |
---|
417 | metrics = factory->priv->metrics; |
---|
418 | |
---|
419 | layout = gtk_widget_create_pango_layout (GTK_WIDGET (icon->caption->canvas), NULL); |
---|
420 | g_assert (layout != NULL); |
---|
421 | |
---|
422 | /* obtain caption text */ |
---|
423 | if (cimage_has_caption (cimage)) { |
---|
424 | caption = cimage_get_caption (cimage); |
---|
425 | } |
---|
426 | else { |
---|
427 | GnomeVFSURI *uri; |
---|
428 | uri = cimage_get_uri (cimage); |
---|
429 | caption = g_path_get_basename (gnome_vfs_uri_get_path (uri)); |
---|
430 | gnome_vfs_uri_unref (uri); |
---|
431 | |
---|
432 | if (!g_utf8_validate (caption, -1, 0)) { |
---|
433 | gchar *tmp = g_locale_to_utf8 (caption, -1, 0, 0, 0); |
---|
434 | g_free (caption); |
---|
435 | caption = tmp; |
---|
436 | } |
---|
437 | |
---|
438 | cimage_set_caption (cimage, caption); |
---|
439 | } |
---|
440 | |
---|
441 | temp = ensure_max_caption_width (caption, layout, metrics->twidth); |
---|
442 | g_free (caption); |
---|
443 | caption = temp; |
---|
444 | |
---|
445 | pango_layout_set_text (layout, caption, -1); |
---|
446 | pango_layout_get_pixel_size (layout, &caption_w, &caption_h); |
---|
447 | |
---|
448 | caption_x = metrics->border + (metrics->twidth - caption_w) / 2; |
---|
449 | caption_y = metrics->border + metrics->theight + metrics->cspace; |
---|
450 | |
---|
451 | style = gtk_widget_get_style (GTK_WIDGET (item->canvas)); |
---|
452 | g_assert (style != NULL); |
---|
453 | |
---|
454 | gnome_canvas_item_set (icon->caption, |
---|
455 | "text", caption, |
---|
456 | "font_desc", style->font_desc, |
---|
457 | "anchor", GTK_ANCHOR_NW, |
---|
458 | "x", (double) caption_x, |
---|
459 | "y", (double) caption_y, |
---|
460 | "fill_color", "White", |
---|
461 | NULL); |
---|
462 | |
---|
463 | g_object_unref (layout); |
---|
464 | g_free (caption); |
---|
465 | } |
---|
466 | |
---|
467 | static void |
---|
468 | update_item_selection (EogItemFactorySimple *factory, GnomeCanvasItem *item, CImage *cimage) |
---|
469 | { |
---|
470 | IconItem *icon; |
---|
471 | int item_w, item_h; |
---|
472 | |
---|
473 | ii_factory_get_item_size (EOG_ITEM_FACTORY (factory), &item_w, &item_h); |
---|
474 | |
---|
475 | icon = g_object_get_data (G_OBJECT (item), "IconItem"); |
---|
476 | g_assert (icon != NULL); |
---|
477 | |
---|
478 | if (cimage_is_selected (cimage)) |
---|
479 | gnome_canvas_item_set (icon->border, |
---|
480 | "x1", 0.0, |
---|
481 | "y1", 0.0, |
---|
482 | "x2", (double) item_w, |
---|
483 | "y2", (double) item_h, |
---|
484 | "outline_color", "Red", |
---|
485 | "fill_color", "Black", |
---|
486 | "width_pixels", 2, |
---|
487 | NULL); |
---|
488 | else |
---|
489 | gnome_canvas_item_set (icon->border, |
---|
490 | "x1", 0.0, |
---|
491 | "y1", 0.0, |
---|
492 | "x2", (double) item_w, |
---|
493 | "y2", (double) item_h, |
---|
494 | "outline_color", "DarkBlue", |
---|
495 | "fill_color", "Black", |
---|
496 | "width_pixels", 2, |
---|
497 | NULL); |
---|
498 | |
---|
499 | } |
---|
500 | |
---|
501 | /* Configure_item handler for the icon list item factory */ |
---|
502 | static void |
---|
503 | ii_factory_update_item (EogItemFactory *factory, |
---|
504 | EogCollectionModel *model, |
---|
505 | GnomeCanvasItem *item, |
---|
506 | EogItemUpdateHint hint) |
---|
507 | { |
---|
508 | EogItemFactorySimple *ii_factory; |
---|
509 | CImage *cimage = NULL; |
---|
510 | IconItem *icon; |
---|
511 | |
---|
512 | g_return_if_fail (factory != NULL); |
---|
513 | g_return_if_fail (EOG_IS_ITEM_FACTORY_SIMPLE (factory)); |
---|
514 | g_return_if_fail (item != NULL); |
---|
515 | g_return_if_fail (GNOME_IS_CANVAS_ITEM (item)); |
---|
516 | g_return_if_fail (model != NULL); |
---|
517 | g_return_if_fail (EOG_IS_COLLECTION_MODEL (model)); |
---|
518 | |
---|
519 | ii_factory = EOG_ITEM_FACTORY_SIMPLE (factory); |
---|
520 | |
---|
521 | icon = g_object_get_data (G_OBJECT (item), "IconItem"); |
---|
522 | cimage = eog_collection_model_get_image (model, icon->id); |
---|
523 | g_return_if_fail (cimage != NULL); |
---|
524 | |
---|
525 | if ((hint & EOG_ITEM_UPDATE_IMAGE) == EOG_ITEM_UPDATE_IMAGE) { |
---|
526 | update_item_image (ii_factory, item, cimage); |
---|
527 | } |
---|
528 | |
---|
529 | if ((hint & EOG_ITEM_UPDATE_CAPTION) == EOG_ITEM_UPDATE_CAPTION) { |
---|
530 | update_item_caption (ii_factory, item, cimage); |
---|
531 | } |
---|
532 | |
---|
533 | if ((hint & EOG_ITEM_UPDATE_SELECTION_STATE) == EOG_ITEM_UPDATE_SELECTION_STATE) { |
---|
534 | update_item_selection (ii_factory, item, cimage); |
---|
535 | } |
---|
536 | } |
---|
537 | |
---|
538 | /* Get_item_size handler for the icon list item factory */ |
---|
539 | static void |
---|
540 | ii_factory_get_item_size (EogItemFactory *factory, |
---|
541 | gint *width, gint *height) |
---|
542 | { |
---|
543 | EogItemFactorySimple *ii_factory; |
---|
544 | EogSimpleMetrics *metrics; |
---|
545 | |
---|
546 | g_return_if_fail (factory != NULL); |
---|
547 | g_return_if_fail (EOG_IS_ITEM_FACTORY_SIMPLE (factory)); |
---|
548 | |
---|
549 | ii_factory = EOG_ITEM_FACTORY_SIMPLE (factory); |
---|
550 | metrics = ii_factory->priv->metrics; |
---|
551 | |
---|
552 | *width = metrics->twidth + 2*metrics->border; |
---|
553 | *height = metrics->theight + 2*metrics->border + |
---|
554 | metrics->cspace + 12 /* font height; FIXME don't hardcode this */; |
---|
555 | } |
---|
556 | |
---|
557 | |
---|
558 | |
---|
559 | static void |
---|
560 | shade_bgr_destroy_notify_cb (guchar *pixels, gpointer data) |
---|
561 | { |
---|
562 | g_free (pixels); |
---|
563 | } |
---|
564 | |
---|
565 | static EogItemFactorySimple* |
---|
566 | eog_item_factory_simple_construct (EogItemFactorySimple *factory) |
---|
567 | { |
---|
568 | EogItemFactorySimplePrivate *priv; |
---|
569 | char *dummy_file; |
---|
570 | guchar *buffer; |
---|
571 | |
---|
572 | priv = factory->priv; |
---|
573 | |
---|
574 | /* load dummy pixmap file */ |
---|
575 | dummy_file = gnome_program_locate_file (NULL, GNOME_FILE_DOMAIN_PIXMAP, |
---|
576 | "gnome-eog.png", TRUE, NULL); |
---|
577 | priv->dummy = gdk_pixbuf_new_from_file (dummy_file, NULL); |
---|
578 | g_free (dummy_file); |
---|
579 | |
---|
580 | buffer = g_new0 (guchar, 3*priv->metrics->twidth * priv->metrics->theight); |
---|
581 | priv->shaded_bgr = gdk_pixbuf_new_from_data (buffer, |
---|
582 | GDK_COLORSPACE_RGB, |
---|
583 | FALSE, |
---|
584 | 8, |
---|
585 | priv->metrics->twidth, |
---|
586 | priv->metrics->theight, |
---|
587 | 3 * priv->metrics->twidth, |
---|
588 | (GdkPixbufDestroyNotify) shade_bgr_destroy_notify_cb, |
---|
589 | NULL); |
---|
590 | g_object_ref (priv->shaded_bgr); |
---|
591 | create_shaded_background (priv->shaded_bgr); |
---|
592 | |
---|
593 | return factory; |
---|
594 | } |
---|
595 | |
---|
596 | |
---|
597 | EogItemFactorySimple * |
---|
598 | eog_item_factory_simple_new (void) |
---|
599 | { |
---|
600 | EogItemFactorySimple *factory; |
---|
601 | |
---|
602 | factory = EOG_ITEM_FACTORY_SIMPLE (g_object_new (EOG_TYPE_ITEM_FACTORY_SIMPLE, NULL)); |
---|
603 | return eog_item_factory_simple_construct (factory); |
---|
604 | } |
---|
605 | |
---|
606 | /** |
---|
607 | * eog_item_factory_simple_set_item_metrics: |
---|
608 | * @factory: An icon list item factory. |
---|
609 | * @item_width: Total width of items, in pixels. |
---|
610 | * @item_height: Total height of items, in pixels. |
---|
611 | * @image_width: Maximum width of images for icons, in pixels. |
---|
612 | * @image_height: Maximum height of images for icons, in pixels. |
---|
613 | * |
---|
614 | * Sets the metrics of the items that will be created in the future by an icon |
---|
615 | * list item factory. This includes the total size of items and the maximum |
---|
616 | * size of icon images. |
---|
617 | **/ |
---|
618 | void |
---|
619 | eog_item_factory_simple_set_metrics (EogItemFactorySimple *factory, |
---|
620 | EogSimpleMetrics *metrics) |
---|
621 | { |
---|
622 | EogItemFactorySimplePrivate *priv; |
---|
623 | |
---|
624 | g_return_if_fail (factory != NULL); |
---|
625 | g_return_if_fail (EOG_IS_ITEM_FACTORY_SIMPLE (factory)); |
---|
626 | g_return_if_fail (metrics->twidth > 0); |
---|
627 | g_return_if_fail (metrics->theight > 0); |
---|
628 | g_return_if_fail (metrics->cspace >= 0); |
---|
629 | g_return_if_fail (metrics->border >= 0); |
---|
630 | |
---|
631 | priv = factory->priv; |
---|
632 | |
---|
633 | if (priv->metrics) |
---|
634 | g_free (priv->metrics); |
---|
635 | |
---|
636 | priv->metrics = metrics; |
---|
637 | |
---|
638 | eog_item_factory_configuration_changed (EOG_ITEM_FACTORY (factory)); |
---|
639 | } |
---|
640 | |
---|
641 | EogSimpleMetrics* |
---|
642 | eog_item_factory_simple_get_metrics (EogItemFactorySimple *factory) |
---|
643 | { |
---|
644 | g_return_val_if_fail (factory != NULL, NULL); |
---|
645 | g_return_val_if_fail (EOG_IS_ITEM_FACTORY_SIMPLE (factory), NULL); |
---|
646 | |
---|
647 | return factory->priv->metrics; |
---|
648 | } |
---|