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
17 #include "path-prefix.h"
21 #include <gtk/gtkiconfactory.h>
22 #include <gtk/gtkstock.h>
23 #include <gtk/gtkimage.h>
25 #include <gtkmm/image.h>
27 #include "prefs-utils.h"
28 #include "inkscape.h"
29 #include "document.h"
30 #include "sp-item.h"
31 #include "display/nr-arena.h"
32 #include "display/nr-arena-item.h"
33 #include "io/sys.h"
35 #include "icon.h"
37 static gboolean icon_prerender_task(gpointer data);
39 static void addPreRender( GtkIconSize lsize, gchar const *name );
41 static void sp_icon_class_init(SPIconClass *klass);
42 static void sp_icon_init(SPIcon *icon);
43 static void sp_icon_destroy(GtkObject *object);
45 static void sp_icon_reset(SPIcon *icon);
46 static void sp_icon_clear(SPIcon *icon);
48 static void sp_icon_size_request(GtkWidget *widget, GtkRequisition *requisition);
49 static void sp_icon_size_allocate(GtkWidget *widget, GtkAllocation *allocation);
50 static int sp_icon_expose(GtkWidget *widget, GdkEventExpose *event);
52 static void sp_icon_paint(SPIcon *icon, GdkRectangle const *area);
54 static void sp_icon_screen_changed( GtkWidget *widget, GdkScreen *previous_screen );
55 static void sp_icon_style_set( GtkWidget *widget, GtkStyle *previous_style );
56 static void sp_icon_theme_changed( SPIcon *icon );
58 static guchar *sp_icon_image_load_pixmap(gchar const *name, unsigned lsize, unsigned psize);
59 static guchar *sp_icon_image_load_svg(gchar const *name, unsigned lsize, unsigned psize);
61 static guchar *sp_icon_image_load(SPIcon *icon, gchar const *name);
63 static int sp_icon_get_phys_size(int size);
65 static void sp_icon_overlay_pixels( guchar *px, int width, int height, int stride,
66 unsigned r, unsigned g, unsigned b );
68 static GtkWidgetClass *parent_class;
70 static bool sizeDirty = true;
72 GtkType
73 sp_icon_get_type()
74 {
75 static GtkType type = 0;
76 if (!type) {
77 GtkTypeInfo info = {
78 "SPIcon",
79 sizeof(SPIcon),
80 sizeof(SPIconClass),
81 (GtkClassInitFunc) sp_icon_class_init,
82 (GtkObjectInitFunc) sp_icon_init,
83 NULL, NULL, NULL
84 };
85 type = gtk_type_unique(GTK_TYPE_WIDGET, &info);
86 }
87 return type;
88 }
90 static void
91 sp_icon_class_init(SPIconClass *klass)
92 {
93 GtkObjectClass *object_class;
94 GtkWidgetClass *widget_class;
96 object_class = (GtkObjectClass *) klass;
97 widget_class = (GtkWidgetClass *) klass;
99 parent_class = (GtkWidgetClass*)g_type_class_peek_parent(klass);
101 object_class->destroy = sp_icon_destroy;
103 widget_class->size_request = sp_icon_size_request;
104 widget_class->size_allocate = sp_icon_size_allocate;
105 widget_class->expose_event = sp_icon_expose;
106 widget_class->screen_changed = sp_icon_screen_changed;
107 widget_class->style_set = sp_icon_style_set;
108 }
111 static void
112 sp_icon_init(SPIcon *icon)
113 {
114 GTK_WIDGET_FLAGS(icon) |= GTK_NO_WINDOW;
115 icon->lsize = Inkscape::ICON_SIZE_BUTTON;
116 icon->psize = 0;
117 icon->name = 0;
118 icon->pb = 0;
119 icon->pb_faded = 0;
120 }
122 static void
123 sp_icon_destroy(GtkObject *object)
124 {
125 SPIcon *icon = SP_ICON(object);
126 sp_icon_clear(icon);
127 if ( icon->name ) {
128 g_free( icon->name );
129 icon->name = 0;
130 }
132 ((GtkObjectClass *) (parent_class))->destroy(object);
133 }
135 static void sp_icon_reset( SPIcon *icon ) {
136 icon->psize = 0;
137 sp_icon_clear(icon);
138 }
140 static void sp_icon_clear( SPIcon *icon ) {
141 if (icon->pb) {
142 g_object_unref(G_OBJECT(icon->pb));
143 icon->pb = NULL;
144 }
145 if (icon->pb_faded) {
146 g_object_unref(G_OBJECT(icon->pb_faded));
147 icon->pb_faded = NULL;
148 }
149 }
151 static void
152 sp_icon_size_request(GtkWidget *widget, GtkRequisition *requisition)
153 {
154 SPIcon const *icon = SP_ICON(widget);
156 int const size = ( icon->psize
157 ? icon->psize
158 : sp_icon_get_phys_size(icon->lsize) );
159 requisition->width = size;
160 requisition->height = size;
161 }
163 static void
164 sp_icon_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
165 {
166 widget->allocation = *allocation;
168 if (GTK_WIDGET_DRAWABLE(widget)) {
169 gtk_widget_queue_draw(widget);
170 }
171 }
173 static int sp_icon_expose(GtkWidget *widget, GdkEventExpose *event)
174 {
175 if ( GTK_WIDGET_DRAWABLE(widget) ) {
176 SPIcon *icon = SP_ICON(widget);
177 if ( !icon->pb ) {
178 guchar *pixels = 0;
180 icon->psize = sp_icon_get_phys_size(icon->lsize);
182 pixels = sp_icon_image_load( icon, icon->name );
184 if (pixels) {
185 // don't pass the nr_free because we're caching the pixel
186 // space loaded through ...
187 // I just changed this. make sure sp_icon_image_load still does the right thing.
188 icon->pb = gdk_pixbuf_new_from_data(pixels, GDK_COLORSPACE_RGB, TRUE, 8,
189 icon->psize, icon->psize, icon->psize * 4,
190 /*(GdkPixbufDestroyNotify)nr_free*/NULL, NULL);
191 icon->pb_faded = gdk_pixbuf_copy(icon->pb);
193 pixels = gdk_pixbuf_get_pixels(icon->pb_faded);
194 size_t stride = gdk_pixbuf_get_rowstride(icon->pb_faded);
195 pixels += 3; // alpha
196 for ( int row = 0 ; row < icon->psize ; row++ ) {
197 guchar *row_pixels = pixels;
198 for ( int column = 0 ; column < icon->psize ; column++ ) {
199 *row_pixels = *row_pixels >> 1;
200 row_pixels += 4;
201 }
202 pixels += stride;
203 }
204 } else {
205 /* TODO: We should do something more useful if we can't load the image. */
206 g_warning ("failed to load icon '%s'", icon->name);
207 }
208 }
210 sp_icon_paint(SP_ICON(widget), &event->area);
211 }
213 return TRUE;
214 }
217 static void sp_icon_screen_changed( GtkWidget *widget, GdkScreen *previous_screen )
218 {
219 if ( GTK_WIDGET_CLASS( parent_class )->screen_changed ) {
220 GTK_WIDGET_CLASS( parent_class )->screen_changed( widget, previous_screen );
221 }
222 SPIcon *icon = SP_ICON(widget);
223 sp_icon_theme_changed(icon);
224 }
226 static void sp_icon_style_set( GtkWidget *widget, GtkStyle *previous_style )
227 {
228 if ( GTK_WIDGET_CLASS( parent_class )->style_set ) {
229 GTK_WIDGET_CLASS( parent_class )->style_set( widget, previous_style );
230 }
231 SPIcon *icon = SP_ICON(widget);
232 sp_icon_theme_changed(icon);
233 }
235 static void sp_icon_theme_changed( SPIcon *icon )
236 {
237 //g_message("Got a change bump for this icon");
238 sizeDirty = true;
239 sp_icon_reset(icon);
240 gtk_widget_queue_draw( GTK_WIDGET(icon) );
241 }
244 static GtkWidget *
245 sp_icon_new_full( GtkIconSize lsize, gchar const *name )
246 {
247 static gint dump = prefs_get_int_attribute_limited( "debug.icons", "dumpGtk", 0, 0, 1 );
248 static gint fallback = prefs_get_int_attribute_limited( "debug.icons", "checkNames", 0, 0, 1 );
250 addPreRender( lsize, name );
252 GtkStockItem stock;
253 gboolean tryLoad = gtk_stock_lookup( name, &stock );
254 if ( !tryLoad && fallback ) {
255 tryLoad |= strncmp("gtk-", name, 4 ) == 0;
256 }
257 if ( !tryLoad && fallback ) {
258 tryLoad |= strncmp("gnome-", name, 6 ) == 0;
259 }
261 GtkWidget *widget = 0;
262 if ( tryLoad ) {
263 GtkWidget *img = gtk_image_new_from_stock( name, lsize );
264 if ( img ) {
265 GtkImageType type = gtk_image_get_storage_type( GTK_IMAGE(img) );
266 if ( type == GTK_IMAGE_STOCK ) {
267 widget = GTK_WIDGET(img);
268 img = 0;
270 if ( dump ) {
271 g_message( "loaded gtk '%s' %d (GTK_IMAGE_STOCK)", name, lsize );
272 }
273 } else {
274 if ( dump ) {
275 g_message( "skipped gtk '%s' %d (not GTK_IMAGE_STOCK)", name, lsize );
276 }
277 g_object_unref( (GObject *)img );
278 img = 0;
279 }
280 }
281 }
283 if ( !widget ) {
284 SPIcon *icon = (SPIcon *)g_object_new(SP_TYPE_ICON, NULL);
285 icon->lsize = (Inkscape::IconSize)lsize;
286 icon->name = g_strdup(name);
287 icon->psize = sp_icon_get_phys_size(lsize);
289 widget = GTK_WIDGET(icon);
290 }
292 return widget;
293 }
295 GtkWidget *
296 sp_icon_new( Inkscape::IconSize lsize, gchar const *name )
297 {
298 // TODO FIX THIS
299 return sp_icon_new_full( (GtkIconSize)lsize, name );
300 }
302 Gtk::Widget *sp_icon_get_icon( Glib::ustring const &oid, Inkscape::IconSize size )
303 {
304 Gtk::Widget *result = 0;
305 GtkWidget *widget = sp_icon_new_full( (GtkIconSize)size, oid.c_str() );
307 if ( widget ) {
308 if ( GTK_IS_IMAGE(widget) ) {
309 GtkImage *img = GTK_IMAGE(widget);
310 result = Glib::wrap( img );
311 } else {
312 result = Glib::wrap( widget );
313 }
314 }
316 return result;
317 }
319 // Try to load the named svg, falling back to pixmaps
320 guchar *
321 sp_icon_image_load( SPIcon *icon, gchar const *name )
322 {
323 guchar *px = sp_icon_image_load_svg( name, icon->lsize, icon->psize );
324 if (!px) {
325 px = sp_icon_image_load_pixmap(name, icon->lsize, icon->psize);
326 }
328 return px;
329 }
331 GtkIconSize
332 sp_icon_get_gtk_size(int size)
333 {
334 static GtkIconSize map[64] = {(GtkIconSize)0};
335 size = CLAMP(size, 4, 63);
336 if (!map[size]) {
337 static int count = 0;
338 char c[64];
339 g_snprintf(c, 64, "InkscapeIcon%d", count++);
340 map[size] = gtk_icon_size_register(c, size, size);
341 }
342 return map[size];
343 }
345 static int sp_icon_get_phys_size(int size)
346 {
347 static bool init = false;
348 static int lastSys[GTK_ICON_SIZE_DIALOG + 1];
349 static int vals[GTK_ICON_SIZE_DIALOG + 1];
351 size = CLAMP( size, GTK_ICON_SIZE_MENU, GTK_ICON_SIZE_DIALOG );
353 if ( sizeDirty && init ) {
354 GtkIconSize const gtkSizes[] = {
355 GTK_ICON_SIZE_MENU,
356 GTK_ICON_SIZE_SMALL_TOOLBAR,
357 GTK_ICON_SIZE_LARGE_TOOLBAR,
358 GTK_ICON_SIZE_BUTTON,
359 GTK_ICON_SIZE_DND,
360 GTK_ICON_SIZE_DIALOG
361 };
362 for (unsigned i = 0; i < G_N_ELEMENTS(gtkSizes) && init; ++i) {
363 unsigned const val_ix(gtkSizes[i]);
364 g_assert( val_ix < G_N_ELEMENTS(vals) );
366 gint width = 0;
367 gint height = 0;
368 if ( gtk_icon_size_lookup(gtkSizes[i], &width, &height ) ) {
369 init &= (lastSys[val_ix] == std::max(width, height));
370 }
371 }
372 }
374 if ( !init ) {
375 sizeDirty = false;
376 gint dump = prefs_get_int_attribute_limited( "debug.icons", "dumpDefault", 0, 0, 1 );
377 if ( dump ) {
378 g_message( "Default icon sizes:" );
379 }
380 memset( vals, 0, sizeof(vals) );
381 memset( lastSys, 0, sizeof(lastSys) );
382 GtkIconSize const gtkSizes[] = {
383 GTK_ICON_SIZE_MENU,
384 GTK_ICON_SIZE_SMALL_TOOLBAR,
385 GTK_ICON_SIZE_LARGE_TOOLBAR,
386 GTK_ICON_SIZE_BUTTON,
387 GTK_ICON_SIZE_DND,
388 GTK_ICON_SIZE_DIALOG
389 };
390 gchar const *const names[] = {
391 "GTK_ICON_SIZE_MENU",
392 "GTK_ICON_SIZE_SMALL_TOOLBAR",
393 "GTK_ICON_SIZE_LARGE_TOOLBAR",
394 "GTK_ICON_SIZE_BUTTON",
395 "GTK_ICON_SIZE_DND",
396 "GTK_ICON_SIZE_DIALOG"
397 };
399 GtkWidget *icon = (GtkWidget *)g_object_new(SP_TYPE_ICON, NULL);
401 for (unsigned i = 0; i < G_N_ELEMENTS(gtkSizes); ++i) {
402 unsigned const val_ix(gtkSizes[i]);
403 g_assert( val_ix < G_N_ELEMENTS(vals) );
405 gint width = 0;
406 gint height = 0;
407 bool used = false;
408 if ( gtk_icon_size_lookup(gtkSizes[i], &width, &height ) ) {
409 vals[val_ix] = std::max(width, height);
410 lastSys[val_ix] = vals[val_ix];
411 used = true;
412 }
413 if (dump) {
414 g_message(" =-- %u size:%d %c(%d, %d) '%s'",
415 i, gtkSizes[i],
416 ( used ? ' ' : 'X' ), width, height, names[i]);
417 }
418 gchar const *id = GTK_STOCK_OPEN;
419 GdkPixbuf *pb = gtk_widget_render_icon( icon, id, gtkSizes[i], NULL);
420 if (pb) {
421 width = gdk_pixbuf_get_width(pb);
422 height = gdk_pixbuf_get_height(pb);
423 int newSize = std::max( width, height );
424 // TODO perhaps check a few more stock icons to get a range on sizes.
425 if ( newSize > 0 ) {
426 vals[val_ix] = newSize;
427 }
428 if (dump) {
429 g_message(" %u size:%d (%d, %d)", i, gtkSizes[i], width, height);
430 }
432 g_object_unref(G_OBJECT(pb));
433 }
434 }
435 //g_object_unref(icon);
436 init = true;
437 }
439 return vals[size];
440 }
442 static void sp_icon_paint(SPIcon *icon, GdkRectangle const *area)
443 {
444 GtkWidget &widget = *GTK_WIDGET(icon);
446 GdkPixbuf *image = GTK_WIDGET_IS_SENSITIVE(&widget) ? icon->pb : icon->pb_faded;
448 if (image) {
449 int const padx = ( ( widget.allocation.width > icon->psize )
450 ? ( widget.allocation.width - icon->psize ) / 2
451 : 0 );
452 int const pady = ( ( widget.allocation.height > icon->psize )
453 ? ( widget.allocation.height - icon->psize ) / 2
454 : 0 );
456 int const x0 = std::max(area->x, widget.allocation.x + padx);
457 int const y0 = std::max(area->y, widget.allocation.y + pady);
458 int const x1 = std::min(area->x + area->width, widget.allocation.x + padx + static_cast<int>(icon->psize) );
459 int const y1 = std::min(area->y + area->height, widget.allocation.y + pady + static_cast<int>(icon->psize) );
461 gdk_draw_pixbuf(GDK_DRAWABLE(widget.window), NULL, image,
462 x0 - widget.allocation.x - padx,
463 y0 - widget.allocation.y - pady,
464 x0, y0,
465 x1 - x0, y1 - y0,
466 GDK_RGB_DITHER_NORMAL, x0, y0);
467 }
468 }
470 static guchar *
471 sp_icon_image_load_pixmap(gchar const *name, unsigned lsize, unsigned psize)
472 {
473 gchar *path;
474 guchar *px;
475 GdkPixbuf *pb;
477 path = (gchar *) g_strdup_printf("%s/%s.png", INKSCAPE_PIXMAPDIR, name);
478 // TODO: bulia, please look over
479 gsize bytesRead = 0;
480 gsize bytesWritten = 0;
481 GError *error = NULL;
482 gchar *localFilename = g_filename_from_utf8( path,
483 -1,
484 &bytesRead,
485 &bytesWritten,
486 &error);
487 pb = gdk_pixbuf_new_from_file(localFilename, NULL);
488 g_free(localFilename);
489 g_free(path);
490 if (!pb) {
491 path = (gchar *) g_strdup_printf("%s/%s.xpm", INKSCAPE_PIXMAPDIR, name);
492 // TODO: bulia, please look over
493 gsize bytesRead = 0;
494 gsize bytesWritten = 0;
495 GError *error = NULL;
496 gchar *localFilename = g_filename_from_utf8( path,
497 -1,
498 &bytesRead,
499 &bytesWritten,
500 &error);
501 pb = gdk_pixbuf_new_from_file(localFilename, NULL);
502 g_free(localFilename);
503 g_free(path);
504 }
505 if (pb) {
506 if (!gdk_pixbuf_get_has_alpha(pb))
507 gdk_pixbuf_add_alpha(pb, FALSE, 0, 0, 0);
508 if ( ( static_cast<unsigned>(gdk_pixbuf_get_width(pb)) != psize )
509 || ( static_cast<unsigned>(gdk_pixbuf_get_height(pb)) != psize ) ) {
510 GdkPixbuf *spb = gdk_pixbuf_scale_simple(pb, psize, psize, GDK_INTERP_HYPER);
511 g_object_unref(G_OBJECT(pb));
512 pb = spb;
513 }
514 guchar *spx = gdk_pixbuf_get_pixels(pb);
515 int srs = gdk_pixbuf_get_rowstride(pb);
516 px = nr_new(guchar, 4 * psize * psize);
517 for (unsigned y = 0; y < psize; y++) {
518 memcpy(px + 4 * y * psize, spx + y * srs, 4 * psize);
519 }
520 g_object_unref(G_OBJECT(pb));
522 return px;
523 }
525 return NULL;
526 }
528 // takes doc, root, icon, and icon name to produce pixels
529 extern "C" guchar *
530 sp_icon_doc_icon( SPDocument *doc, NRArenaItem *root,
531 gchar const *name, unsigned psize )
532 {
533 gint const dump = prefs_get_int_attribute_limited( "debug.icons", "dumpSvg", 0, 0, 1 );
534 guchar *px = NULL;
536 if (doc) {
537 SPObject *object = doc->getObjectById(name);
538 if (object && SP_IS_ITEM(object)) {
539 /* Find bbox in document */
540 NR::Matrix const i2doc(sp_item_i2doc_affine(SP_ITEM(object)));
541 NR::Rect dbox = SP_ITEM(object)->invokeBbox(i2doc);
543 if ( SP_OBJECT_PARENT(object) == NULL )
544 {
545 dbox = NR::Rect(NR::Point(0, 0),
546 NR::Point(sp_document_width(doc), sp_document_height(doc)));
547 }
549 /* This is in document coordinates, i.e. pixels */
550 if (dbox.isEmpty() == false) {
551 NRGC gc(NULL);
552 /* Update to renderable state */
553 double sf = 1.0;
554 NRMatrix t;
555 nr_matrix_set_scale(&t, sf, sf);
556 nr_arena_item_set_transform(root, &t);
557 nr_matrix_set_identity(&gc.transform);
558 nr_arena_item_invoke_update( root, NULL, &gc,
559 NR_ARENA_ITEM_STATE_ALL,
560 NR_ARENA_ITEM_STATE_NONE );
561 /* Item integer bbox in points */
562 NRRectL ibox;
563 ibox.x0 = (int) floor(sf * dbox.min()[NR::X] + 0.5);
564 ibox.y0 = (int) floor(sf * dbox.min()[NR::Y] + 0.5);
565 ibox.x1 = (int) floor(sf * dbox.max()[NR::X] + 0.5);
566 ibox.y1 = (int) floor(sf * dbox.max()[NR::Y] + 0.5);
568 if ( dump ) {
569 g_message( " box --'%s' (%f,%f)-(%f,%f)", name, (double)ibox.x0, (double)ibox.y0, (double)ibox.x1, (double)ibox.y1 );
570 }
572 /* Find button visible area */
573 int width = ibox.x1 - ibox.x0;
574 int height = ibox.y1 - ibox.y0;
576 if ( dump ) {
577 g_message( " vis --'%s' (%d,%d)", name, width, height );
578 }
580 {
581 int block = std::max(width, height);
582 if (block != static_cast<int>(psize) ) {
583 if ( dump ) {
584 g_message(" resizing" );
585 }
586 sf = (double)psize / (double)block;
588 nr_matrix_set_scale(&t, sf, sf);
589 nr_arena_item_set_transform(root, &t);
590 nr_matrix_set_identity(&gc.transform);
591 nr_arena_item_invoke_update( root, NULL, &gc,
592 NR_ARENA_ITEM_STATE_ALL,
593 NR_ARENA_ITEM_STATE_NONE );
594 /* Item integer bbox in points */
595 ibox.x0 = (int) floor(sf * dbox.min()[NR::X] + 0.5);
596 ibox.y0 = (int) floor(sf * dbox.min()[NR::Y] + 0.5);
597 ibox.x1 = (int) floor(sf * dbox.max()[NR::X] + 0.5);
598 ibox.y1 = (int) floor(sf * dbox.max()[NR::Y] + 0.5);
600 if ( dump ) {
601 g_message( " box2 --'%s' (%f,%f)-(%f,%f)", name, (double)ibox.x0, (double)ibox.y0, (double)ibox.x1, (double)ibox.y1 );
602 }
604 /* Find button visible area */
605 width = ibox.x1 - ibox.x0;
606 height = ibox.y1 - ibox.y0;
607 if ( dump ) {
608 g_message( " vis2 --'%s' (%d,%d)", name, width, height );
609 }
610 }
611 }
613 int dx, dy;
614 //dx = (psize - width) / 2;
615 //dy = (psize - height) / 2;
616 dx=dy=psize;
617 dx=(dx-width)/2; // watch out for psize, since 'unsigned'-'signed' can cause problems if the result is negative
618 dy=(dy-height)/2;
619 NRRectL area;
620 area.x0 = ibox.x0 - dx;
621 area.y0 = ibox.y0 - dy;
622 area.x1 = area.x0 + psize;
623 area.y1 = area.y0 + psize;
624 /* Actual renderable area */
625 NRRectL ua;
626 ua.x0 = MAX(ibox.x0, area.x0);
627 ua.y0 = MAX(ibox.y0, area.y0);
628 ua.x1 = MIN(ibox.x1, area.x1);
629 ua.y1 = MIN(ibox.y1, area.y1);
631 if ( dump ) {
632 g_message( " area --'%s' (%f,%f)-(%f,%f)", name, (double)area.x0, (double)area.y0, (double)area.x1, (double)area.y1 );
633 g_message( " ua --'%s' (%f,%f)-(%f,%f)", name, (double)ua.x0, (double)ua.y0, (double)ua.x1, (double)ua.y1 );
634 }
635 /* Set up pixblock */
636 px = nr_new(guchar, 4 * psize * psize);
637 memset(px, 0x00, 4 * psize * psize);
638 /* Render */
639 NRPixBlock B;
640 nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
641 ua.x0, ua.y0, ua.x1, ua.y1,
642 px + 4 * psize * (ua.y0 - area.y0) +
643 4 * (ua.x0 - area.x0),
644 4 * psize, FALSE, FALSE );
645 nr_arena_item_invoke_render( root, &ua, &B,
646 NR_ARENA_ITEM_RENDER_NO_CACHE );
647 nr_pixblock_release(&B);
649 gint useOverlay = prefs_get_int_attribute_limited( "debug.icons", "overlaySvg", 0, 0, 1 );
650 if ( useOverlay ) {
651 sp_icon_overlay_pixels( px, psize, psize, 4 * psize, 0x00, 0x00, 0xff );
652 }
653 }
654 }
655 }
657 return px;
658 } // end of sp_icon_doc_icon()
662 struct svg_doc_cache_t
663 {
664 SPDocument *doc;
665 NRArenaItem *root;
666 };
668 static std::map<Glib::ustring, svg_doc_cache_t *> doc_cache;
669 static std::map<Glib::ustring, guchar *> px_cache;
671 static Glib::ustring icon_cache_key(gchar const *name,
672 unsigned lsize, unsigned psize)
673 {
674 Glib::ustring key=name;
675 key += ":";
676 key += lsize;
677 key += ":";
678 key += psize;
679 return key;
680 }
682 static guchar *get_cached_pixels(Glib::ustring const &key) {
683 std::map<Glib::ustring, guchar *>::iterator found=px_cache.find(key);
684 if ( found != px_cache.end() ) {
685 return found->second;
686 }
687 return NULL;
688 }
690 static guchar *load_svg_pixels(gchar const *name,
691 unsigned lsize, unsigned psize)
692 {
693 SPDocument *doc = NULL;
694 NRArenaItem *root = NULL;
695 svg_doc_cache_t *info = NULL;
697 // Fall back from user prefs dir into system locations.
698 Glib::ustring iconsvg = name;
699 iconsvg += ".svg";
700 std::list<gchar *> sources;
701 sources.push_back(g_build_filename(profile_path("icons"),iconsvg.c_str(), NULL));
702 sources.push_back(g_build_filename(profile_path("icons"),"icons.svg", NULL));
703 sources.push_back(g_build_filename(INKSCAPE_PIXMAPDIR, iconsvg.c_str(), NULL));
704 sources.push_back(g_build_filename(INKSCAPE_PIXMAPDIR, "icons.svg", NULL));
706 // Try each document in turn until we successfully load the icon from one
707 guchar *px=NULL;
708 while ( !sources.empty() && !px ) {
709 gchar *doc_filename = sources.front();
711 // Did we already load this doc?
712 Glib::ustring key(doc_filename);
713 info = 0;
714 {
715 std::map<Glib::ustring, svg_doc_cache_t *>::iterator i = doc_cache.find(key);
716 if ( i != doc_cache.end() ) {
717 info = i->second;
718 }
719 }
721 /* Try to load from document. */
722 if (!info &&
723 Inkscape::IO::file_test( doc_filename, G_FILE_TEST_IS_REGULAR ) &&
724 (doc = sp_document_new( doc_filename, FALSE )) ) {
726 // prep the document
727 sp_document_ensure_up_to_date(doc);
728 /* Create new arena */
729 NRArena *arena = NRArena::create();
730 /* Create ArenaItem and set transform */
731 unsigned visionkey = sp_item_display_key_new(1);
732 /* fixme: Memory manage root if needed (Lauris) */
733 root = sp_item_invoke_show( SP_ITEM(SP_DOCUMENT_ROOT(doc)),
734 arena, visionkey, SP_ITEM_SHOW_DISPLAY );
736 // store into the cache
737 info = new svg_doc_cache_t;
738 g_assert(info);
740 info->doc=doc;
741 info->root=root;
742 doc_cache[key]=info;
743 }
744 if (info) {
745 doc=info->doc;
746 root=info->root;
747 }
749 // toss the filename
750 g_free(doc_filename);
751 sources.pop_front();
753 // move on to the next document if we couldn't get anything
754 if (!info && !doc) continue;
756 px = sp_icon_doc_icon( doc, root, name, psize );
757 }
759 return px;
760 }
762 // returns true if icon needed preloading, false if nothing was done
763 static bool prerender_icon(gchar const *name, unsigned lsize, unsigned psize)
764 {
765 Glib::ustring key=icon_cache_key(name, lsize, psize);
766 guchar *px=get_cached_pixels(key);
767 if (px) {
768 return false;
769 } else {
770 px = load_svg_pixels(name, lsize, psize);
771 if (px) {
772 px_cache[key] = px;
773 }
774 return true;
775 }
776 }
778 static guchar *
779 sp_icon_image_load_svg(gchar const *name, unsigned lsize, unsigned psize)
780 {
781 Glib::ustring key=icon_cache_key(name, lsize, psize);
783 // did we already load this icon at this scale/size?
784 guchar *px=get_cached_pixels(key);
785 if (!px) {
786 px = load_svg_pixels(name, lsize, psize);
787 if (px) {
788 px_cache[key] = px;
789 }
790 }
791 return px;
792 }
794 void sp_icon_overlay_pixels(guchar *px, int width, int height, int stride,
795 unsigned r, unsigned g, unsigned b)
796 {
797 for ( int y = 0; y < height; y += 4 ) {
798 guchar *ptr = px + y * stride;
799 for ( int x = 0; x < width; x += 4 ) {
800 *(ptr++) = r;
801 *(ptr++) = g;
802 *(ptr++) = b;
803 *(ptr++) = 0xff;
805 ptr += 4 * 3;
806 }
807 }
809 if ( width > 1 && height > 1 ) {
810 // point at the last pixel
811 guchar *ptr = px + ((height-1) * stride) + ((width - 1) * 4);
813 if ( width > 2 ) {
814 px[4] = r;
815 px[5] = g;
816 px[6] = b;
817 px[7] = 0xff;
819 ptr[-12] = r;
820 ptr[-11] = g;
821 ptr[-10] = b;
822 ptr[-9] = 0xff;
823 }
825 ptr[-4] = r;
826 ptr[-3] = g;
827 ptr[-2] = b;
828 ptr[-1] = 0xff;
830 px[0 + stride] = r;
831 px[1 + stride] = g;
832 px[2 + stride] = b;
833 px[3 + stride] = 0xff;
835 ptr[0 - stride] = r;
836 ptr[1 - stride] = g;
837 ptr[2 - stride] = b;
838 ptr[3 - stride] = 0xff;
840 if ( height > 2 ) {
841 ptr[0 - stride * 3] = r;
842 ptr[1 - stride * 3] = g;
843 ptr[2 - stride * 3] = b;
844 ptr[3 - stride * 3] = 0xff;
845 }
846 }
847 }
849 class preRenderItem
850 {
851 public:
852 preRenderItem( GtkIconSize lsize, gchar const *name ) :
853 _lsize( lsize ),
854 _name( name )
855 {}
856 GtkIconSize _lsize;
857 Glib::ustring _name;
858 };
861 #include <queue>
863 static std::queue<preRenderItem> pendingRenders;
864 static bool callbackHooked = false;
866 static void addPreRender( GtkIconSize lsize, gchar const *name )
867 {
869 if ( !callbackHooked )
870 {
871 callbackHooked = true;
872 g_idle_add_full( G_PRIORITY_LOW, &icon_prerender_task, NULL, NULL );
873 }
875 pendingRenders.push(preRenderItem(lsize, name));
876 }
878 gboolean icon_prerender_task(gpointer data) {
879 if (!pendingRenders.empty()) {
880 preRenderItem single=pendingRenders.front();
881 pendingRenders.pop();
882 int psize = sp_icon_get_phys_size(single._lsize);
883 prerender_icon(single._name.c_str(), single._lsize, psize);
884 }
886 if (!pendingRenders.empty()) {
887 return TRUE;
888 } else {
889 callbackHooked = false;
890 return FALSE;
891 }
892 }
894 /*
895 Local Variables:
896 mode:c++
897 c-file-style:"stroustrup"
898 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
899 indent-tabs-mode:nil
900 fill-column:99
901 End:
902 */
903 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :