1 /** \file
2 * SPIcon: Generic icon widget
3 */
4 /*
5 * Author:
6 * Lauris Kaplinski <lauris@kaplinski.com>
7 * Jon A. Cruz <jon@joncruz.org>
8 *
9 * Copyright (C) 2002 Lauris Kaplinski
10 *
11 * Released under GNU GPL, read the file 'COPYING' for more information
12 */
14 #ifdef HAVE_CONFIG_H
15 # include "config.h"
16 #endif
18 #include <cstring>
19 #include <glib/gmem.h>
20 #include <gtk/gtk.h>
21 #include <gtkmm.h>
23 #include "path-prefix.h"
24 #include "preferences.h"
25 #include "inkscape.h"
26 #include "document.h"
27 #include "sp-item.h"
28 #include "display/nr-arena.h"
29 #include "display/nr-arena-item.h"
30 #include "io/sys.h"
32 #include "icon.h"
34 static void sp_icon_class_init(SPIconClass *klass);
35 static void sp_icon_init(SPIcon *icon);
36 static void sp_icon_dispose(GObject *object);
38 static void sp_icon_reset(SPIcon *icon);
39 static void sp_icon_clear(SPIcon *icon);
41 static void sp_icon_size_request(GtkWidget *widget, GtkRequisition *requisition);
42 static void sp_icon_size_allocate(GtkWidget *widget, GtkAllocation *allocation);
43 static int sp_icon_expose(GtkWidget *widget, GdkEventExpose *event);
45 static void sp_icon_paint(SPIcon *icon, GdkRectangle const *area);
47 static void sp_icon_screen_changed( GtkWidget *widget, GdkScreen *previous_screen );
48 static void sp_icon_style_set( GtkWidget *widget, GtkStyle *previous_style );
49 static void sp_icon_theme_changed( SPIcon *icon );
51 static GdkPixbuf *sp_icon_image_load_pixmap(gchar const *name, unsigned lsize, unsigned psize);
52 static GdkPixbuf *sp_icon_image_load_svg(gchar const *name, GtkIconSize lsize, unsigned psize);
54 static void sp_icon_overlay_pixels( guchar *px, int width, int height, int stride,
55 unsigned r, unsigned g, unsigned b );
57 static void injectCustomSize();
59 static GtkWidgetClass *parent_class;
61 static bool sizeDirty = true;
63 static bool sizeMapDone = false;
64 static GtkIconSize iconSizeLookup[] = {
65 GTK_ICON_SIZE_INVALID,
66 GTK_ICON_SIZE_MENU,
67 GTK_ICON_SIZE_SMALL_TOOLBAR,
68 GTK_ICON_SIZE_LARGE_TOOLBAR,
69 GTK_ICON_SIZE_BUTTON,
70 GTK_ICON_SIZE_DND,
71 GTK_ICON_SIZE_DIALOG,
72 GTK_ICON_SIZE_MENU, // for Inkscape::ICON_SIZE_DECORATION
73 };
75 class IconCacheItem
76 {
77 public:
78 IconCacheItem( GtkIconSize lsize, GdkPixbuf* pb ) :
79 _lsize( lsize ),
80 _pb( pb )
81 {}
82 GtkIconSize _lsize;
83 GdkPixbuf* _pb;
84 };
86 static Glib::RefPtr<Gtk::IconFactory> inkyIcons;
88 GType
89 sp_icon_get_type()
90 {
91 //TODO: switch to GObject
92 // GtkType and such calls were deprecated a while back with the
93 // introduction of GObject as a separate layer, with GType instead. --JonCruz
95 static GType type = 0;
96 if (!type) {
97 GTypeInfo info = {
98 sizeof(SPIconClass),
99 NULL,
100 NULL,
101 (GClassInitFunc) sp_icon_class_init,
102 NULL,
103 NULL,
104 sizeof(SPIcon),
105 0,
106 (GInstanceInitFunc) sp_icon_init,
107 NULL
108 };
109 type = g_type_register_static(GTK_TYPE_WIDGET, "SPIcon", &info, (GTypeFlags)0);
110 }
111 return type;
112 }
114 static void
115 sp_icon_class_init(SPIconClass *klass)
116 {
117 GObjectClass *object_class;
118 GtkWidgetClass *widget_class;
120 object_class = (GObjectClass *) klass;
121 widget_class = (GtkWidgetClass *) klass;
123 parent_class = (GtkWidgetClass*)g_type_class_peek_parent(klass);
125 object_class->dispose = sp_icon_dispose;
127 widget_class->size_request = sp_icon_size_request;
128 widget_class->size_allocate = sp_icon_size_allocate;
129 widget_class->expose_event = sp_icon_expose;
130 widget_class->screen_changed = sp_icon_screen_changed;
131 widget_class->style_set = sp_icon_style_set;
132 }
135 static void
136 sp_icon_init(SPIcon *icon)
137 {
138 GTK_WIDGET_FLAGS(icon) |= GTK_NO_WINDOW;
139 icon->lsize = Inkscape::ICON_SIZE_BUTTON;
140 icon->psize = 0;
141 icon->name = 0;
142 icon->pb = 0;
143 }
145 static void
146 sp_icon_dispose(GObject *object)
147 {
148 SPIcon *icon = SP_ICON(object);
149 sp_icon_clear(icon);
150 if ( icon->name ) {
151 g_free( icon->name );
152 icon->name = 0;
153 }
155 ((GObjectClass *) (parent_class))->dispose(object);
156 }
158 static void sp_icon_reset( SPIcon *icon ) {
159 icon->psize = 0;
160 sp_icon_clear(icon);
161 }
163 static void sp_icon_clear( SPIcon *icon ) {
164 if (icon->pb) {
165 g_object_unref(G_OBJECT(icon->pb));
166 icon->pb = NULL;
167 }
168 }
170 static void
171 sp_icon_size_request(GtkWidget *widget, GtkRequisition *requisition)
172 {
173 SPIcon const *icon = SP_ICON(widget);
175 int const size = ( icon->psize
176 ? icon->psize
177 : sp_icon_get_phys_size(icon->lsize) );
178 requisition->width = size;
179 requisition->height = size;
180 }
182 static void
183 sp_icon_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
184 {
185 widget->allocation = *allocation;
187 if (GTK_WIDGET_DRAWABLE(widget)) {
188 gtk_widget_queue_draw(widget);
189 }
190 }
192 static int sp_icon_expose(GtkWidget *widget, GdkEventExpose *event)
193 {
194 if ( GTK_WIDGET_DRAWABLE(widget) ) {
195 SPIcon *icon = SP_ICON(widget);
196 if ( !icon->pb ) {
197 sp_icon_fetch_pixbuf( icon );
198 }
200 sp_icon_paint(SP_ICON(widget), &event->area);
201 }
203 return TRUE;
204 }
206 // PUBLIC CALL:
207 void sp_icon_fetch_pixbuf( SPIcon *icon )
208 {
209 if ( icon ) {
210 if ( !icon->pb ) {
211 icon->psize = sp_icon_get_phys_size(icon->lsize);
212 GtkIconTheme *theme = gtk_icon_theme_get_default();
214 GdkPixbuf *pb = NULL;
215 if (gtk_icon_theme_has_icon(theme, icon->name)) {
216 pb = gtk_icon_theme_load_icon(theme, icon->name, icon->psize, (GtkIconLookupFlags) 0, NULL);
217 }
218 if (!pb) {
219 pb = sp_icon_image_load_svg( icon->name, Inkscape::getRegisteredIconSize(icon->lsize), icon->psize );
220 // if this was loaded from SVG, add it as a builtin icon
221 if (pb) gtk_icon_theme_add_builtin_icon(icon->name, icon->psize, pb);
222 }
223 if (!pb) {
224 pb = sp_icon_image_load_pixmap( icon->name, icon->lsize, icon->psize );
225 }
226 if ( pb ) {
227 icon->pb = pb;
228 } else {
229 /* TODO: We should do something more useful if we can't load the image. */
230 g_warning ("failed to load icon '%s'", icon->name);
231 }
232 }
233 }
234 }
236 static void sp_icon_screen_changed( GtkWidget *widget, GdkScreen *previous_screen )
237 {
238 if ( GTK_WIDGET_CLASS( parent_class )->screen_changed ) {
239 GTK_WIDGET_CLASS( parent_class )->screen_changed( widget, previous_screen );
240 }
241 SPIcon *icon = SP_ICON(widget);
242 sp_icon_theme_changed(icon);
243 }
245 static void sp_icon_style_set( GtkWidget *widget, GtkStyle *previous_style )
246 {
247 if ( GTK_WIDGET_CLASS( parent_class )->style_set ) {
248 GTK_WIDGET_CLASS( parent_class )->style_set( widget, previous_style );
249 }
250 SPIcon *icon = SP_ICON(widget);
251 sp_icon_theme_changed(icon);
252 }
254 static void sp_icon_theme_changed( SPIcon *icon )
255 {
256 //g_message("Got a change bump for this icon");
257 sizeDirty = true;
258 sp_icon_reset(icon);
259 gtk_widget_queue_draw( GTK_WIDGET(icon) );
260 }
263 static Glib::ustring icon_cache_key(gchar const *name, unsigned psize);
264 static GdkPixbuf *get_cached_pixbuf(Glib::ustring const &key);
266 static GtkWidget *
267 sp_icon_new_full( Inkscape::IconSize lsize, gchar const *name )
268 {
269 GtkWidget *widget = 0;
270 gint trySize = CLAMP( static_cast<gint>(lsize), 0, static_cast<gint>(G_N_ELEMENTS(iconSizeLookup) - 1) );
271 if ( !sizeMapDone ) {
272 injectCustomSize();
273 }
274 GtkIconSize mappedSize = iconSizeLookup[trySize];
276 GtkStockItem stock;
277 gboolean stockFound = gtk_stock_lookup( name, &stock );
279 if ( stockFound ) {
280 GtkWidget *img = gtk_image_new_from_stock( name, mappedSize );
281 widget = GTK_WIDGET(img);
282 }
284 if ( !widget ) {
285 //g_message("Creating an SPIcon instance for %s:%d", name, (int)lsize);
286 SPIcon *icon = (SPIcon *)g_object_new(SP_TYPE_ICON, NULL);
287 icon->lsize = lsize;
288 icon->name = g_strdup(name);
289 icon->psize = sp_icon_get_phys_size(lsize);
291 widget = GTK_WIDGET(icon);
292 }
294 return widget;
295 }
297 GtkWidget *
298 sp_icon_new( Inkscape::IconSize lsize, gchar const *name )
299 {
300 return sp_icon_new_full( lsize, name );
301 }
303 // PUBLIC CALL:
304 Gtk::Widget *sp_icon_get_icon( Glib::ustring const &oid, Inkscape::IconSize size )
305 {
306 Gtk::Widget *result = 0;
307 GtkWidget *widget = sp_icon_new_full( static_cast<Inkscape::IconSize>(Inkscape::getRegisteredIconSize(size)), oid.c_str() );
309 if ( widget ) {
310 if ( GTK_IS_IMAGE(widget) ) {
311 GtkImage *img = GTK_IMAGE(widget);
312 result = Glib::wrap( img );
313 } else {
314 result = Glib::wrap( widget );
315 }
316 }
318 return result;
319 }
321 GtkIconSize
322 sp_icon_get_gtk_size(int size)
323 {
324 static GtkIconSize sizemap[64] = {(GtkIconSize)0};
325 size = CLAMP(size, 4, 63);
326 if (!sizemap[size]) {
327 static int count = 0;
328 char c[64];
329 g_snprintf(c, 64, "InkscapeIcon%d", count++);
330 sizemap[size] = gtk_icon_size_register(c, size, size);
331 }
332 return sizemap[size];
333 }
336 static void injectCustomSize()
337 {
338 // TODO - still need to handle the case of theme changes and resize, especially as we can't re-register a string.
339 if ( !sizeMapDone )
340 {
341 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
342 bool dump = prefs->getBool( "/debug/icons/dumpDefault");
343 gint width = 0;
344 gint height = 0;
345 if ( gtk_icon_size_lookup(GTK_ICON_SIZE_MENU, &width, &height ) ) {
346 gint newWidth = ((width * 3) / 4);
347 gint newHeight = ((height * 3) / 4);
348 GtkIconSize newSizeEnum = gtk_icon_size_register( "inkscape-decoration", newWidth, newHeight );
349 if ( newSizeEnum ) {
350 if ( dump ) {
351 g_message("Registered (%d, %d) <= (%d, %d) as index %d", newWidth, newHeight, width, height, newSizeEnum);
352 }
353 guint index = static_cast<guint>(Inkscape::ICON_SIZE_DECORATION);
354 if ( index < G_N_ELEMENTS(iconSizeLookup) ) {
355 iconSizeLookup[index] = newSizeEnum;
356 } else if ( dump ) {
357 g_message("size lookup array too small to store entry");
358 }
359 }
360 }
361 sizeMapDone = true;
362 }
364 static bool hit = false;
365 if ( !hit ) {
366 hit = true;
367 inkyIcons = Gtk::IconFactory::create();
368 inkyIcons->add_default();
369 }
370 }
372 GtkIconSize Inkscape::getRegisteredIconSize( Inkscape::IconSize size )
373 {
374 GtkIconSize other = GTK_ICON_SIZE_MENU;
375 injectCustomSize();
376 size = CLAMP( size, Inkscape::ICON_SIZE_MENU, Inkscape::ICON_SIZE_DECORATION );
377 if ( size == Inkscape::ICON_SIZE_DECORATION ) {
378 other = gtk_icon_size_from_name("inkscape-decoration");
379 } else {
380 other = static_cast<GtkIconSize>(size);
381 }
383 return other;
384 }
387 // PUBLIC CALL:
388 int sp_icon_get_phys_size(int size)
389 {
390 static bool init = false;
391 static int lastSys[Inkscape::ICON_SIZE_DECORATION + 1];
392 static int vals[Inkscape::ICON_SIZE_DECORATION + 1];
394 size = CLAMP( size, GTK_ICON_SIZE_MENU, Inkscape::ICON_SIZE_DECORATION );
396 if ( !sizeMapDone ) {
397 injectCustomSize();
398 }
400 if ( sizeDirty && init ) {
401 GtkIconSize const gtkSizes[] = {
402 GTK_ICON_SIZE_MENU,
403 GTK_ICON_SIZE_SMALL_TOOLBAR,
404 GTK_ICON_SIZE_LARGE_TOOLBAR,
405 GTK_ICON_SIZE_BUTTON,
406 GTK_ICON_SIZE_DND,
407 GTK_ICON_SIZE_DIALOG,
408 static_cast<guint>(Inkscape::ICON_SIZE_DECORATION) < G_N_ELEMENTS(iconSizeLookup) ?
409 iconSizeLookup[static_cast<int>(Inkscape::ICON_SIZE_DECORATION)] :
410 GTK_ICON_SIZE_MENU
411 };
412 for (unsigned i = 0; i < G_N_ELEMENTS(gtkSizes) && init; ++i) {
413 guint const val_ix = (gtkSizes[i] <= GTK_ICON_SIZE_DIALOG) ? (guint)gtkSizes[i] : (guint)Inkscape::ICON_SIZE_DECORATION;
415 g_assert( val_ix < G_N_ELEMENTS(vals) );
417 gint width = 0;
418 gint height = 0;
419 if ( gtk_icon_size_lookup(gtkSizes[i], &width, &height ) ) {
420 init &= (lastSys[val_ix] == std::max(width, height));
421 }
422 }
423 }
425 if ( !init ) {
426 sizeDirty = false;
427 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
428 bool dump = prefs->getBool("/debug/icons/dumpDefault");
430 if ( dump ) {
431 g_message( "Default icon sizes:" );
432 }
433 memset( vals, 0, sizeof(vals) );
434 memset( lastSys, 0, sizeof(lastSys) );
435 GtkIconSize const gtkSizes[] = {
436 GTK_ICON_SIZE_MENU,
437 GTK_ICON_SIZE_SMALL_TOOLBAR,
438 GTK_ICON_SIZE_LARGE_TOOLBAR,
439 GTK_ICON_SIZE_BUTTON,
440 GTK_ICON_SIZE_DND,
441 GTK_ICON_SIZE_DIALOG,
442 static_cast<guint>(Inkscape::ICON_SIZE_DECORATION) < G_N_ELEMENTS(iconSizeLookup) ?
443 iconSizeLookup[static_cast<int>(Inkscape::ICON_SIZE_DECORATION)] :
444 GTK_ICON_SIZE_MENU
445 };
446 gchar const *const names[] = {
447 "GTK_ICON_SIZE_MENU",
448 "GTK_ICON_SIZE_SMALL_TOOLBAR",
449 "GTK_ICON_SIZE_LARGE_TOOLBAR",
450 "GTK_ICON_SIZE_BUTTON",
451 "GTK_ICON_SIZE_DND",
452 "GTK_ICON_SIZE_DIALOG",
453 "inkscape-decoration"
454 };
456 GtkWidget *icon = (GtkWidget *)g_object_new(SP_TYPE_ICON, NULL);
458 for (unsigned i = 0; i < G_N_ELEMENTS(gtkSizes); ++i) {
459 guint const val_ix = (gtkSizes[i] <= GTK_ICON_SIZE_DIALOG) ? (guint)gtkSizes[i] : (guint)Inkscape::ICON_SIZE_DECORATION;
461 g_assert( val_ix < G_N_ELEMENTS(vals) );
463 gint width = 0;
464 gint height = 0;
465 bool used = false;
466 if ( gtk_icon_size_lookup(gtkSizes[i], &width, &height ) ) {
467 vals[val_ix] = std::max(width, height);
468 lastSys[val_ix] = vals[val_ix];
469 used = true;
470 }
471 if (dump) {
472 g_message(" =-- %u size:%d %c(%d, %d) '%s'",
473 i, gtkSizes[i],
474 ( used ? ' ' : 'X' ), width, height, names[i]);
475 }
476 gchar const *id = GTK_STOCK_OPEN;
477 GdkPixbuf *pb = gtk_widget_render_icon( icon, id, gtkSizes[i], NULL);
478 if (pb) {
479 width = gdk_pixbuf_get_width(pb);
480 height = gdk_pixbuf_get_height(pb);
481 int newSize = std::max( width, height );
482 // TODO perhaps check a few more stock icons to get a range on sizes.
483 if ( newSize > 0 ) {
484 vals[val_ix] = newSize;
485 }
486 if (dump) {
487 g_message(" %u size:%d (%d, %d)", i, gtkSizes[i], width, height);
488 }
490 g_object_unref(G_OBJECT(pb));
491 }
492 }
493 //g_object_unref(icon);
494 init = true;
495 }
497 // Fixup workaround
498 if ((size == GTK_ICON_SIZE_MENU) || (size == GTK_ICON_SIZE_SMALL_TOOLBAR) || (size == GTK_ICON_SIZE_LARGE_TOOLBAR)) {
499 gint width = 0;
500 gint height = 0;
501 if ( gtk_icon_size_lookup( static_cast<GtkIconSize>(size), &width, &height ) ) {
502 vals[size] = std::max( width, height );
503 }
504 }
506 return vals[size];
507 }
509 static void sp_icon_paint(SPIcon *icon, GdkRectangle const *area)
510 {
511 GtkWidget &widget = *GTK_WIDGET(icon);
512 GdkPixbuf *image = icon->pb;
513 bool unref_image = false;
515 /* copied from the expose function of GtkImage */
516 if (GTK_WIDGET_STATE (icon) != GTK_STATE_NORMAL && image) {
517 GtkIconSource *source = gtk_icon_source_new();
518 gtk_icon_source_set_pixbuf(source, icon->pb);
519 gtk_icon_source_set_size(source, GTK_ICON_SIZE_SMALL_TOOLBAR); // note: this is boilerplate and not used
520 gtk_icon_source_set_size_wildcarded(source, FALSE);
521 image = gtk_style_render_icon (widget.style, source, gtk_widget_get_direction(&widget),
522 (GtkStateType) GTK_WIDGET_STATE(&widget), (GtkIconSize)-1, &widget, "gtk-image");
523 gtk_icon_source_free(source);
524 unref_image = true;
525 }
527 if (image) {
528 int x = floor(widget.allocation.x + ((widget.allocation.width - widget.requisition.width) * 0.5));
529 int y = floor(widget.allocation.y + ((widget.allocation.height - widget.requisition.height) * 0.5));
530 int width = gdk_pixbuf_get_width(image);
531 int height = gdk_pixbuf_get_height(image);
532 // Limit drawing to when we actually have something. Avoids some crashes.
533 if ( (width > 0) && (height > 0) ) {
534 gdk_draw_pixbuf(GDK_DRAWABLE(widget.window), widget.style->black_gc, image,
535 0, 0, x, y, width, height,
536 GDK_RGB_DITHER_NORMAL, x, y);
537 }
538 }
540 if (unref_image) g_object_unref(G_OBJECT(image));
541 }
543 GdkPixbuf *sp_icon_image_load_pixmap(gchar const *name, unsigned /*lsize*/, unsigned psize)
544 {
545 gchar *path = (gchar *) g_strdup_printf("%s/%s.png", INKSCAPE_PIXMAPDIR, name);
546 // TODO: bulia, please look over
547 gsize bytesRead = 0;
548 gsize bytesWritten = 0;
549 GError *error = NULL;
550 gchar *localFilename = g_filename_from_utf8( path,
551 -1,
552 &bytesRead,
553 &bytesWritten,
554 &error);
555 GdkPixbuf *pb = gdk_pixbuf_new_from_file(localFilename, NULL);
556 g_free(localFilename);
557 g_free(path);
558 if (!pb) {
559 path = (gchar *) g_strdup_printf("%s/%s.xpm", INKSCAPE_PIXMAPDIR, name);
560 // TODO: bulia, please look over
561 gsize bytesRead = 0;
562 gsize bytesWritten = 0;
563 GError *error = NULL;
564 gchar *localFilename = g_filename_from_utf8( path,
565 -1,
566 &bytesRead,
567 &bytesWritten,
568 &error);
569 pb = gdk_pixbuf_new_from_file(localFilename, NULL);
570 g_free(localFilename);
571 g_free(path);
572 }
574 if (pb) {
575 if (!gdk_pixbuf_get_has_alpha(pb)) {
576 gdk_pixbuf_add_alpha(pb, FALSE, 0, 0, 0);
577 }
579 if ( ( static_cast<unsigned>(gdk_pixbuf_get_width(pb)) != psize )
580 || ( static_cast<unsigned>(gdk_pixbuf_get_height(pb)) != psize ) ) {
581 GdkPixbuf *spb = gdk_pixbuf_scale_simple(pb, psize, psize, GDK_INTERP_HYPER);
582 g_object_unref(G_OBJECT(pb));
583 pb = spb;
584 }
585 }
587 return pb;
588 }
590 // takes doc, root, icon, and icon name to produce pixels
591 extern "C" guchar *
592 sp_icon_doc_icon( SPDocument *doc, NRArenaItem *root,
593 gchar const *name, unsigned psize )
594 {
595 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
596 bool const dump = prefs->getBool("/debug/icons/dumpSvg");
597 guchar *px = NULL;
599 if (doc) {
600 SPObject *object = doc->getObjectById(name);
601 if (object && SP_IS_ITEM(object)) {
602 /* Find bbox in document */
603 Geom::Matrix const i2doc(sp_item_i2doc_affine(SP_ITEM(object)));
604 Geom::OptRect dbox = SP_ITEM(object)->getBounds(i2doc);
606 if ( SP_OBJECT_PARENT(object) == NULL )
607 {
608 dbox = Geom::Rect(Geom::Point(0, 0),
609 Geom::Point(sp_document_width(doc), sp_document_height(doc)));
610 }
612 /* This is in document coordinates, i.e. pixels */
613 if ( dbox ) {
614 NRGC gc(NULL);
615 /* Update to renderable state */
616 double sf = 1.0;
617 nr_arena_item_set_transform(root, (Geom::Matrix)Geom::Scale(sf, sf));
618 gc.transform.setIdentity();
619 nr_arena_item_invoke_update( root, NULL, &gc,
620 NR_ARENA_ITEM_STATE_ALL,
621 NR_ARENA_ITEM_STATE_NONE );
622 /* Item integer bbox in points */
623 NRRectL ibox;
624 ibox.x0 = (int) floor(sf * dbox->min()[Geom::X] + 0.5);
625 ibox.y0 = (int) floor(sf * dbox->min()[Geom::Y] + 0.5);
626 ibox.x1 = (int) floor(sf * dbox->max()[Geom::X] + 0.5);
627 ibox.y1 = (int) floor(sf * dbox->max()[Geom::Y] + 0.5);
629 if ( dump ) {
630 g_message( " box --'%s' (%f,%f)-(%f,%f)", name, (double)ibox.x0, (double)ibox.y0, (double)ibox.x1, (double)ibox.y1 );
631 }
633 /* Find button visible area */
634 int width = ibox.x1 - ibox.x0;
635 int height = ibox.y1 - ibox.y0;
637 if ( dump ) {
638 g_message( " vis --'%s' (%d,%d)", name, width, height );
639 }
641 {
642 int block = std::max(width, height);
643 if (block != static_cast<int>(psize) ) {
644 if ( dump ) {
645 g_message(" resizing" );
646 }
647 sf = (double)psize / (double)block;
649 nr_arena_item_set_transform(root, (Geom::Matrix)Geom::Scale(sf, sf));
650 gc.transform.setIdentity();
651 nr_arena_item_invoke_update( root, NULL, &gc,
652 NR_ARENA_ITEM_STATE_ALL,
653 NR_ARENA_ITEM_STATE_NONE );
654 /* Item integer bbox in points */
655 ibox.x0 = (int) floor(sf * dbox->min()[Geom::X] + 0.5);
656 ibox.y0 = (int) floor(sf * dbox->min()[Geom::Y] + 0.5);
657 ibox.x1 = (int) floor(sf * dbox->max()[Geom::X] + 0.5);
658 ibox.y1 = (int) floor(sf * dbox->max()[Geom::Y] + 0.5);
660 if ( dump ) {
661 g_message( " box2 --'%s' (%f,%f)-(%f,%f)", name, (double)ibox.x0, (double)ibox.y0, (double)ibox.x1, (double)ibox.y1 );
662 }
664 /* Find button visible area */
665 width = ibox.x1 - ibox.x0;
666 height = ibox.y1 - ibox.y0;
667 if ( dump ) {
668 g_message( " vis2 --'%s' (%d,%d)", name, width, height );
669 }
670 }
671 }
673 int dx, dy;
674 //dx = (psize - width) / 2;
675 //dy = (psize - height) / 2;
676 dx=dy=psize;
677 dx=(dx-width)/2; // watch out for psize, since 'unsigned'-'signed' can cause problems if the result is negative
678 dy=(dy-height)/2;
679 NRRectL area;
680 area.x0 = ibox.x0 - dx;
681 area.y0 = ibox.y0 - dy;
682 area.x1 = area.x0 + psize;
683 area.y1 = area.y0 + psize;
684 /* Actual renderable area */
685 NRRectL ua;
686 ua.x0 = MAX(ibox.x0, area.x0);
687 ua.y0 = MAX(ibox.y0, area.y0);
688 ua.x1 = MIN(ibox.x1, area.x1);
689 ua.y1 = MIN(ibox.y1, area.y1);
691 if ( dump ) {
692 g_message( " area --'%s' (%f,%f)-(%f,%f)", name, (double)area.x0, (double)area.y0, (double)area.x1, (double)area.y1 );
693 g_message( " ua --'%s' (%f,%f)-(%f,%f)", name, (double)ua.x0, (double)ua.y0, (double)ua.x1, (double)ua.y1 );
694 }
695 /* Set up pixblock */
696 px = g_new(guchar, 4 * psize * psize);
697 memset(px, 0x00, 4 * psize * psize);
698 /* Render */
699 NRPixBlock B;
700 nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
701 ua.x0, ua.y0, ua.x1, ua.y1,
702 px + 4 * psize * (ua.y0 - area.y0) +
703 4 * (ua.x0 - area.x0),
704 4 * psize, FALSE, FALSE );
705 nr_arena_item_invoke_render(NULL, root, &ua, &B,
706 NR_ARENA_ITEM_RENDER_NO_CACHE );
707 nr_pixblock_release(&B);
709 bool useOverlay = prefs->getBool("/debug/icons/overlaySvg");
710 if ( useOverlay ) {
711 sp_icon_overlay_pixels( px, psize, psize, 4 * psize, 0x00, 0x00, 0xff );
712 }
713 }
714 }
715 }
717 return px;
718 } // end of sp_icon_doc_icon()
722 struct svg_doc_cache_t
723 {
724 SPDocument *doc;
725 NRArenaItem *root;
726 };
728 static std::map<Glib::ustring, svg_doc_cache_t *> doc_cache;
729 static std::map<Glib::ustring, GdkPixbuf *> pb_cache;
731 Glib::ustring icon_cache_key(gchar const *name, unsigned psize)
732 {
733 Glib::ustring key=name;
734 key += ":";
735 key += psize;
736 return key;
737 }
739 GdkPixbuf *get_cached_pixbuf(Glib::ustring const &key) {
740 std::map<Glib::ustring, GdkPixbuf *>::iterator found = pb_cache.find(key);
741 if ( found != pb_cache.end() ) {
742 return found->second;
743 }
744 return NULL;
745 }
747 static std::list<gchar*> &icons_svg_paths()
748 {
749 static std::list<gchar *> sources;
750 static bool initialized = false;
751 if (!initialized) {
752 // Fall back from user prefs dir into system locations.
753 gchar *userdir = profile_path("icons");
754 sources.push_back(g_build_filename(userdir,"icons.svg", NULL));
755 sources.push_back(g_build_filename(INKSCAPE_PIXMAPDIR, "icons.svg", NULL));
756 g_free(userdir);
757 initialized = true;
758 }
759 return sources;
760 }
762 // this function renders icons from icons.svg and returns the pixels.
763 static guchar *load_svg_pixels(gchar const *name,
764 unsigned /*lsize*/, unsigned psize)
765 {
766 SPDocument *doc = NULL;
767 NRArenaItem *root = NULL;
768 svg_doc_cache_t *info = NULL;
770 std::list<gchar *> &sources = icons_svg_paths();
772 // Try each document in turn until we successfully load the icon from one
773 guchar *px=NULL;
774 for (std::list<gchar*>::iterator i = sources.begin(); i != sources.end() && !px; ++i) {
775 gchar *doc_filename = *i;
777 // Did we already load this doc?
778 Glib::ustring key(doc_filename);
779 info = 0;
780 {
781 std::map<Glib::ustring, svg_doc_cache_t *>::iterator i = doc_cache.find(key);
782 if ( i != doc_cache.end() ) {
783 info = i->second;
784 }
785 }
787 /* Try to load from document. */
788 if (!info &&
789 Inkscape::IO::file_test( doc_filename, G_FILE_TEST_IS_REGULAR ) &&
790 (doc = sp_document_new( doc_filename, FALSE )) ) {
792 //g_message("Loaded icon file %s", doc_filename);
793 // prep the document
794 sp_document_ensure_up_to_date(doc);
795 /* Create new arena */
796 NRArena *arena = NRArena::create();
797 /* Create ArenaItem and set transform */
798 unsigned visionkey = sp_item_display_key_new(1);
799 /* fixme: Memory manage root if needed (Lauris) */
800 root = sp_item_invoke_show( SP_ITEM(SP_DOCUMENT_ROOT(doc)),
801 arena, visionkey, SP_ITEM_SHOW_DISPLAY );
803 // store into the cache
804 info = new svg_doc_cache_t;
805 g_assert(info);
807 info->doc=doc;
808 info->root=root;
809 doc_cache[key]=info;
810 }
811 if (info) {
812 doc=info->doc;
813 root=info->root;
814 }
816 // move on to the next document if we couldn't get anything
817 if (!info && !doc) continue;
819 px = sp_icon_doc_icon( doc, root, name, psize );
820 //if (px) g_message("Found icon %s in %s", name, doc_filename);
821 }
823 //if (!px) g_message("Not found icon %s", name);
824 return px;
825 }
827 static GdkPixbuf *sp_icon_image_load_svg(gchar const *name, GtkIconSize lsize, unsigned psize)
828 {
829 Glib::ustring key = icon_cache_key(name, psize);
831 // did we already load this icon at this scale/size?
832 GdkPixbuf* pb = get_cached_pixbuf(key);
833 if (!pb) {
834 guchar *px = load_svg_pixels(name, lsize, psize);
835 if (px) {
836 pb = gdk_pixbuf_new_from_data(px, GDK_COLORSPACE_RGB, TRUE, 8,
837 psize, psize, psize * 4,
838 (GdkPixbufDestroyNotify)g_free, NULL);
839 pb_cache[key] = pb;
840 }
841 }
843 if ( pb ) {
844 // increase refcount since we're handing out ownership
845 g_object_ref(G_OBJECT(pb));
846 }
847 return pb;
848 }
850 void sp_icon_overlay_pixels(guchar *px, int width, int height, int stride,
851 unsigned r, unsigned g, unsigned b)
852 {
853 int bytesPerPixel = 4;
854 int spacing = 4;
855 for ( int y = 0; y < height; y += spacing ) {
856 guchar *ptr = px + y * stride;
857 for ( int x = 0; x < width; x += spacing ) {
858 *(ptr++) = r;
859 *(ptr++) = g;
860 *(ptr++) = b;
861 *(ptr++) = 0xff;
863 ptr += bytesPerPixel * (spacing - 1);
864 }
865 }
867 if ( width > 1 && height > 1 ) {
868 // point at the last pixel
869 guchar *ptr = px + ((height-1) * stride) + ((width - 1) * bytesPerPixel);
871 if ( width > 2 ) {
872 px[4] = r;
873 px[5] = g;
874 px[6] = b;
875 px[7] = 0xff;
877 ptr[-12] = r;
878 ptr[-11] = g;
879 ptr[-10] = b;
880 ptr[-9] = 0xff;
881 }
883 ptr[-4] = r;
884 ptr[-3] = g;
885 ptr[-2] = b;
886 ptr[-1] = 0xff;
888 px[0 + stride] = r;
889 px[1 + stride] = g;
890 px[2 + stride] = b;
891 px[3 + stride] = 0xff;
893 ptr[0 - stride] = r;
894 ptr[1 - stride] = g;
895 ptr[2 - stride] = b;
896 ptr[3 - stride] = 0xff;
898 if ( height > 2 ) {
899 ptr[0 - stride * 3] = r;
900 ptr[1 - stride * 3] = g;
901 ptr[2 - stride * 3] = b;
902 ptr[3 - stride * 3] = 0xff;
903 }
904 }
905 }
908 /*
909 Local Variables:
910 mode:c++
911 c-file-style:"stroustrup"
912 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
913 indent-tabs-mode:nil
914 fill-column:99
915 End:
916 */
917 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :