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( Inkscape::IconSize 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 void injectCustomSize();
70 static GtkWidgetClass *parent_class;
72 static bool sizeDirty = true;
74 static bool sizeMapDone = false;
75 static GtkIconSize iconSizeLookup[] = {
76 GTK_ICON_SIZE_INVALID,
77 GTK_ICON_SIZE_MENU,
78 GTK_ICON_SIZE_SMALL_TOOLBAR,
79 GTK_ICON_SIZE_LARGE_TOOLBAR,
80 GTK_ICON_SIZE_BUTTON,
81 GTK_ICON_SIZE_DND,
82 GTK_ICON_SIZE_DIALOG,
83 GTK_ICON_SIZE_MENU, // for Inkscape::ICON_SIZE_DECORATION
84 };
86 GtkType
87 sp_icon_get_type()
88 {
89 static GtkType type = 0;
90 if (!type) {
91 GtkTypeInfo info = {
92 "SPIcon",
93 sizeof(SPIcon),
94 sizeof(SPIconClass),
95 (GtkClassInitFunc) sp_icon_class_init,
96 (GtkObjectInitFunc) sp_icon_init,
97 NULL, NULL, NULL
98 };
99 type = gtk_type_unique(GTK_TYPE_WIDGET, &info);
100 }
101 return type;
102 }
104 static void
105 sp_icon_class_init(SPIconClass *klass)
106 {
107 GtkObjectClass *object_class;
108 GtkWidgetClass *widget_class;
110 object_class = (GtkObjectClass *) klass;
111 widget_class = (GtkWidgetClass *) klass;
113 parent_class = (GtkWidgetClass*)g_type_class_peek_parent(klass);
115 object_class->destroy = sp_icon_destroy;
117 widget_class->size_request = sp_icon_size_request;
118 widget_class->size_allocate = sp_icon_size_allocate;
119 widget_class->expose_event = sp_icon_expose;
120 widget_class->screen_changed = sp_icon_screen_changed;
121 widget_class->style_set = sp_icon_style_set;
122 }
125 static void
126 sp_icon_init(SPIcon *icon)
127 {
128 GTK_WIDGET_FLAGS(icon) |= GTK_NO_WINDOW;
129 icon->lsize = Inkscape::ICON_SIZE_BUTTON;
130 icon->psize = 0;
131 icon->name = 0;
132 icon->pb = 0;
133 icon->pb_faded = 0;
134 }
136 static void
137 sp_icon_destroy(GtkObject *object)
138 {
139 SPIcon *icon = SP_ICON(object);
140 sp_icon_clear(icon);
141 if ( icon->name ) {
142 g_free( icon->name );
143 icon->name = 0;
144 }
146 ((GtkObjectClass *) (parent_class))->destroy(object);
147 }
149 static void sp_icon_reset( SPIcon *icon ) {
150 icon->psize = 0;
151 sp_icon_clear(icon);
152 }
154 static void sp_icon_clear( SPIcon *icon ) {
155 if (icon->pb) {
156 g_object_unref(G_OBJECT(icon->pb));
157 icon->pb = NULL;
158 }
159 if (icon->pb_faded) {
160 g_object_unref(G_OBJECT(icon->pb_faded));
161 icon->pb_faded = NULL;
162 }
163 }
165 static void
166 sp_icon_size_request(GtkWidget *widget, GtkRequisition *requisition)
167 {
168 SPIcon const *icon = SP_ICON(widget);
170 int const size = ( icon->psize
171 ? icon->psize
172 : sp_icon_get_phys_size(icon->lsize) );
173 requisition->width = size;
174 requisition->height = size;
175 }
177 static void
178 sp_icon_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
179 {
180 widget->allocation = *allocation;
182 if (GTK_WIDGET_DRAWABLE(widget)) {
183 gtk_widget_queue_draw(widget);
184 }
185 }
187 static int sp_icon_expose(GtkWidget *widget, GdkEventExpose *event)
188 {
189 if ( GTK_WIDGET_DRAWABLE(widget) ) {
190 SPIcon *icon = SP_ICON(widget);
191 if ( !icon->pb ) {
192 guchar *pixels = 0;
194 icon->psize = sp_icon_get_phys_size(icon->lsize);
196 pixels = sp_icon_image_load( icon, icon->name );
198 if (pixels) {
199 // don't pass the nr_free because we're caching the pixel
200 // space loaded through ...
201 // I just changed this. make sure sp_icon_image_load still does the right thing.
202 icon->pb = gdk_pixbuf_new_from_data(pixels, GDK_COLORSPACE_RGB, TRUE, 8,
203 icon->psize, icon->psize, icon->psize * 4,
204 /*(GdkPixbufDestroyNotify)nr_free*/NULL, NULL);
205 icon->pb_faded = gdk_pixbuf_copy(icon->pb);
207 pixels = gdk_pixbuf_get_pixels(icon->pb_faded);
208 size_t stride = gdk_pixbuf_get_rowstride(icon->pb_faded);
209 pixels += 3; // alpha
210 for ( int row = 0 ; row < icon->psize ; row++ ) {
211 guchar *row_pixels = pixels;
212 for ( int column = 0 ; column < icon->psize ; column++ ) {
213 *row_pixels = *row_pixels >> 1;
214 row_pixels += 4;
215 }
216 pixels += stride;
217 }
218 } else {
219 /* TODO: We should do something more useful if we can't load the image. */
220 g_warning ("failed to load icon '%s'", icon->name);
221 }
222 }
224 sp_icon_paint(SP_ICON(widget), &event->area);
225 }
227 return TRUE;
228 }
231 static void sp_icon_screen_changed( GtkWidget *widget, GdkScreen *previous_screen )
232 {
233 if ( GTK_WIDGET_CLASS( parent_class )->screen_changed ) {
234 GTK_WIDGET_CLASS( parent_class )->screen_changed( widget, previous_screen );
235 }
236 SPIcon *icon = SP_ICON(widget);
237 sp_icon_theme_changed(icon);
238 }
240 static void sp_icon_style_set( GtkWidget *widget, GtkStyle *previous_style )
241 {
242 if ( GTK_WIDGET_CLASS( parent_class )->style_set ) {
243 GTK_WIDGET_CLASS( parent_class )->style_set( widget, previous_style );
244 }
245 SPIcon *icon = SP_ICON(widget);
246 sp_icon_theme_changed(icon);
247 }
249 static void sp_icon_theme_changed( SPIcon *icon )
250 {
251 //g_message("Got a change bump for this icon");
252 sizeDirty = true;
253 sp_icon_reset(icon);
254 gtk_widget_queue_draw( GTK_WIDGET(icon) );
255 }
258 static GtkWidget *
259 sp_icon_new_full( Inkscape::IconSize lsize, gchar const *name )
260 {
261 static gint dump = prefs_get_int_attribute_limited( "debug.icons", "dumpGtk", 0, 0, 1 );
262 static gint fallback = prefs_get_int_attribute_limited( "debug.icons", "checkNames", 0, 0, 1 );
264 addPreRender( lsize, name );
266 GtkStockItem stock;
267 gboolean tryLoad = gtk_stock_lookup( name, &stock );
268 if ( !tryLoad && fallback ) {
269 tryLoad |= strncmp("gtk-", name, 4 ) == 0;
270 }
271 if ( !tryLoad && fallback ) {
272 tryLoad |= strncmp("gnome-", name, 6 ) == 0;
273 }
275 GtkWidget *widget = 0;
276 if ( tryLoad ) {
277 gint trySize = CLAMP( static_cast<gint>(lsize), 0, static_cast<gint>(G_N_ELEMENTS(iconSizeLookup) - 1) );
279 if ( !sizeMapDone ) {
280 injectCustomSize();
281 }
283 GtkWidget *img = gtk_image_new_from_stock( name, iconSizeLookup[trySize] );
284 if ( img ) {
285 GtkImageType type = gtk_image_get_storage_type( GTK_IMAGE(img) );
286 if ( type == GTK_IMAGE_STOCK ) {
287 widget = GTK_WIDGET(img);
288 img = 0;
290 if ( dump ) {
291 g_message( "loaded gtk '%s' %d (GTK_IMAGE_STOCK)", name, lsize );
292 }
293 } else {
294 if ( dump ) {
295 g_message( "skipped gtk '%s' %d (not GTK_IMAGE_STOCK)", name, lsize );
296 }
297 g_object_unref( (GObject *)img );
298 img = 0;
299 }
300 }
301 }
303 if ( !widget ) {
304 SPIcon *icon = (SPIcon *)g_object_new(SP_TYPE_ICON, NULL);
305 icon->lsize = lsize;
306 icon->name = g_strdup(name);
307 icon->psize = sp_icon_get_phys_size(lsize);
309 widget = GTK_WIDGET(icon);
310 }
312 return widget;
313 }
315 GtkWidget *
316 sp_icon_new( Inkscape::IconSize lsize, gchar const *name )
317 {
318 return sp_icon_new_full( lsize, name );
319 }
321 Gtk::Widget *sp_icon_get_icon( Glib::ustring const &oid, Inkscape::IconSize size )
322 {
323 Gtk::Widget *result = 0;
324 GtkWidget *widget = sp_icon_new_full( size, oid.c_str() );
326 if ( widget ) {
327 if ( GTK_IS_IMAGE(widget) ) {
328 GtkImage *img = GTK_IMAGE(widget);
329 result = Glib::wrap( img );
330 } else {
331 result = Glib::wrap( widget );
332 }
333 }
335 return result;
336 }
338 // Try to load the named svg, falling back to pixmaps
339 guchar *
340 sp_icon_image_load( SPIcon *icon, gchar const *name )
341 {
342 guchar *px = sp_icon_image_load_svg( name, icon->lsize, icon->psize );
343 if (!px) {
344 px = sp_icon_image_load_pixmap(name, icon->lsize, icon->psize);
345 }
347 return px;
348 }
350 GtkIconSize
351 sp_icon_get_gtk_size(int size)
352 {
353 static GtkIconSize map[64] = {(GtkIconSize)0};
354 size = CLAMP(size, 4, 63);
355 if (!map[size]) {
356 static int count = 0;
357 char c[64];
358 g_snprintf(c, 64, "InkscapeIcon%d", count++);
359 map[size] = gtk_icon_size_register(c, size, size);
360 }
361 return map[size];
362 }
364 static void injectCustomSize()
365 {
366 // TODO - still need to handle the case of theme changes and resize, especially as we can't re-register a string.
367 if ( !sizeMapDone )
368 {
369 gint dump = prefs_get_int_attribute_limited( "debug.icons", "dumpDefault", 0, 0, 1 );
370 gint width = 0;
371 gint height = 0;
372 if ( gtk_icon_size_lookup(GTK_ICON_SIZE_MENU, &width, &height ) ) {
373 gint newWidth = ((width * 3) / 4);
374 gint newHeight = ((height * 3) / 4);
375 GtkIconSize newSizeEnum = gtk_icon_size_register( "inkscape-decoration", newWidth, newHeight );
376 if ( newSizeEnum ) {
377 if ( dump ) {
378 g_message("Registered (%d, %d) <= (%d, %d) as index %d", newWidth, newHeight, width, height, newSizeEnum);
379 }
380 guint index = static_cast<guint>(Inkscape::ICON_SIZE_DECORATION);
381 if ( index < G_N_ELEMENTS(iconSizeLookup) ) {
382 iconSizeLookup[index] = newSizeEnum;
383 } else if ( dump ) {
384 g_message("size lookup array too small to store entry");
385 }
386 }
387 }
388 sizeMapDone = true;
389 }
391 }
393 static int sp_icon_get_phys_size(int size)
394 {
395 static bool init = false;
396 static int lastSys[Inkscape::ICON_SIZE_DECORATION + 1];
397 static int vals[Inkscape::ICON_SIZE_DECORATION + 1];
399 size = CLAMP( size, GTK_ICON_SIZE_MENU, Inkscape::ICON_SIZE_DECORATION );
401 if ( !sizeMapDone ) {
402 injectCustomSize();
403 }
405 if ( sizeDirty && init ) {
406 GtkIconSize const gtkSizes[] = {
407 GTK_ICON_SIZE_MENU,
408 GTK_ICON_SIZE_SMALL_TOOLBAR,
409 GTK_ICON_SIZE_LARGE_TOOLBAR,
410 GTK_ICON_SIZE_BUTTON,
411 GTK_ICON_SIZE_DND,
412 GTK_ICON_SIZE_DIALOG,
413 static_cast<guint>(Inkscape::ICON_SIZE_DECORATION) < G_N_ELEMENTS(iconSizeLookup) ?
414 iconSizeLookup[static_cast<int>(Inkscape::ICON_SIZE_DECORATION)] :
415 GTK_ICON_SIZE_MENU
416 };
417 for (unsigned i = 0; i < G_N_ELEMENTS(gtkSizes) && init; ++i) {
418 guint const val_ix = (gtkSizes[i] <= GTK_ICON_SIZE_DIALOG) ? (guint)gtkSizes[i] : (guint)Inkscape::ICON_SIZE_DECORATION;
420 g_assert( val_ix < G_N_ELEMENTS(vals) );
422 gint width = 0;
423 gint height = 0;
424 if ( gtk_icon_size_lookup(gtkSizes[i], &width, &height ) ) {
425 init &= (lastSys[val_ix] == std::max(width, height));
426 }
427 }
428 }
430 if ( !init ) {
431 sizeDirty = false;
432 gint dump = prefs_get_int_attribute_limited( "debug.icons", "dumpDefault", 0, 0, 1 );
434 if ( dump ) {
435 g_message( "Default icon sizes:" );
436 }
437 memset( vals, 0, sizeof(vals) );
438 memset( lastSys, 0, sizeof(lastSys) );
439 GtkIconSize const gtkSizes[] = {
440 GTK_ICON_SIZE_MENU,
441 GTK_ICON_SIZE_SMALL_TOOLBAR,
442 GTK_ICON_SIZE_LARGE_TOOLBAR,
443 GTK_ICON_SIZE_BUTTON,
444 GTK_ICON_SIZE_DND,
445 GTK_ICON_SIZE_DIALOG,
446 static_cast<guint>(Inkscape::ICON_SIZE_DECORATION) < G_N_ELEMENTS(iconSizeLookup) ?
447 iconSizeLookup[static_cast<int>(Inkscape::ICON_SIZE_DECORATION)] :
448 GTK_ICON_SIZE_MENU
449 };
450 gchar const *const names[] = {
451 "GTK_ICON_SIZE_MENU",
452 "GTK_ICON_SIZE_SMALL_TOOLBAR",
453 "GTK_ICON_SIZE_LARGE_TOOLBAR",
454 "GTK_ICON_SIZE_BUTTON",
455 "GTK_ICON_SIZE_DND",
456 "GTK_ICON_SIZE_DIALOG",
457 "inkscape-decoration"
458 };
460 GtkWidget *icon = (GtkWidget *)g_object_new(SP_TYPE_ICON, NULL);
462 for (unsigned i = 0; i < G_N_ELEMENTS(gtkSizes); ++i) {
463 guint const val_ix = (gtkSizes[i] <= GTK_ICON_SIZE_DIALOG) ? (guint)gtkSizes[i] : (guint)Inkscape::ICON_SIZE_DECORATION;
465 g_assert( val_ix < G_N_ELEMENTS(vals) );
467 gint width = 0;
468 gint height = 0;
469 bool used = false;
470 if ( gtk_icon_size_lookup(gtkSizes[i], &width, &height ) ) {
471 vals[val_ix] = std::max(width, height);
472 lastSys[val_ix] = vals[val_ix];
473 used = true;
474 }
475 if (dump) {
476 g_message(" =-- %u size:%d %c(%d, %d) '%s'",
477 i, gtkSizes[i],
478 ( used ? ' ' : 'X' ), width, height, names[i]);
479 }
480 gchar const *id = GTK_STOCK_OPEN;
481 GdkPixbuf *pb = gtk_widget_render_icon( icon, id, gtkSizes[i], NULL);
482 if (pb) {
483 width = gdk_pixbuf_get_width(pb);
484 height = gdk_pixbuf_get_height(pb);
485 int newSize = std::max( width, height );
486 // TODO perhaps check a few more stock icons to get a range on sizes.
487 if ( newSize > 0 ) {
488 vals[val_ix] = newSize;
489 }
490 if (dump) {
491 g_message(" %u size:%d (%d, %d)", i, gtkSizes[i], width, height);
492 }
494 g_object_unref(G_OBJECT(pb));
495 }
496 }
497 //g_object_unref(icon);
498 init = true;
499 }
501 return vals[size];
502 }
504 static void sp_icon_paint(SPIcon *icon, GdkRectangle const *area)
505 {
506 GtkWidget &widget = *GTK_WIDGET(icon);
508 GdkPixbuf *image = GTK_WIDGET_IS_SENSITIVE(&widget) ? icon->pb : icon->pb_faded;
510 if (image) {
511 int const padx = ( ( widget.allocation.width > icon->psize )
512 ? ( widget.allocation.width - icon->psize ) / 2
513 : 0 );
514 int const pady = ( ( widget.allocation.height > icon->psize )
515 ? ( widget.allocation.height - icon->psize ) / 2
516 : 0 );
518 int const x0 = std::max(area->x, widget.allocation.x + padx);
519 int const y0 = std::max(area->y, widget.allocation.y + pady);
520 int const x1 = std::min(area->x + area->width, widget.allocation.x + padx + static_cast<int>(icon->psize) );
521 int const y1 = std::min(area->y + area->height, widget.allocation.y + pady + static_cast<int>(icon->psize) );
523 gdk_draw_pixbuf(GDK_DRAWABLE(widget.window), NULL, image,
524 x0 - widget.allocation.x - padx,
525 y0 - widget.allocation.y - pady,
526 x0, y0,
527 x1 - x0, y1 - y0,
528 GDK_RGB_DITHER_NORMAL, x0, y0);
529 }
530 }
532 static guchar *
533 sp_icon_image_load_pixmap(gchar const *name, unsigned lsize, unsigned psize)
534 {
535 gchar *path;
536 guchar *px;
537 GdkPixbuf *pb;
539 path = (gchar *) g_strdup_printf("%s/%s.png", INKSCAPE_PIXMAPDIR, name);
540 // TODO: bulia, please look over
541 gsize bytesRead = 0;
542 gsize bytesWritten = 0;
543 GError *error = NULL;
544 gchar *localFilename = g_filename_from_utf8( path,
545 -1,
546 &bytesRead,
547 &bytesWritten,
548 &error);
549 pb = gdk_pixbuf_new_from_file(localFilename, NULL);
550 g_free(localFilename);
551 g_free(path);
552 if (!pb) {
553 path = (gchar *) g_strdup_printf("%s/%s.xpm", INKSCAPE_PIXMAPDIR, name);
554 // TODO: bulia, please look over
555 gsize bytesRead = 0;
556 gsize bytesWritten = 0;
557 GError *error = NULL;
558 gchar *localFilename = g_filename_from_utf8( path,
559 -1,
560 &bytesRead,
561 &bytesWritten,
562 &error);
563 pb = gdk_pixbuf_new_from_file(localFilename, NULL);
564 g_free(localFilename);
565 g_free(path);
566 }
567 if (pb) {
568 if (!gdk_pixbuf_get_has_alpha(pb))
569 gdk_pixbuf_add_alpha(pb, FALSE, 0, 0, 0);
570 if ( ( static_cast<unsigned>(gdk_pixbuf_get_width(pb)) != psize )
571 || ( static_cast<unsigned>(gdk_pixbuf_get_height(pb)) != psize ) ) {
572 GdkPixbuf *spb = gdk_pixbuf_scale_simple(pb, psize, psize, GDK_INTERP_HYPER);
573 g_object_unref(G_OBJECT(pb));
574 pb = spb;
575 }
576 guchar *spx = gdk_pixbuf_get_pixels(pb);
577 int srs = gdk_pixbuf_get_rowstride(pb);
578 px = nr_new(guchar, 4 * psize * psize);
579 for (unsigned y = 0; y < psize; y++) {
580 memcpy(px + 4 * y * psize, spx + y * srs, 4 * psize);
581 }
582 g_object_unref(G_OBJECT(pb));
584 return px;
585 }
587 return NULL;
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 gint const dump = prefs_get_int_attribute_limited( "debug.icons", "dumpSvg", 0, 0, 1 );
596 guchar *px = NULL;
598 if (doc) {
599 SPObject *object = doc->getObjectById(name);
600 if (object && SP_IS_ITEM(object)) {
601 /* Find bbox in document */
602 NR::Matrix const i2doc(sp_item_i2doc_affine(SP_ITEM(object)));
603 NR::Rect dbox = SP_ITEM(object)->invokeBbox(i2doc);
605 if ( SP_OBJECT_PARENT(object) == NULL )
606 {
607 dbox = NR::Rect(NR::Point(0, 0),
608 NR::Point(sp_document_width(doc), sp_document_height(doc)));
609 }
611 /* This is in document coordinates, i.e. pixels */
612 if (dbox.isEmpty() == false) {
613 NRGC gc(NULL);
614 /* Update to renderable state */
615 double sf = 1.0;
616 NRMatrix t;
617 nr_matrix_set_scale(&t, sf, sf);
618 nr_arena_item_set_transform(root, &t);
619 nr_matrix_set_identity(&gc.transform);
620 nr_arena_item_invoke_update( root, NULL, &gc,
621 NR_ARENA_ITEM_STATE_ALL,
622 NR_ARENA_ITEM_STATE_NONE );
623 /* Item integer bbox in points */
624 NRRectL ibox;
625 ibox.x0 = (int) floor(sf * dbox.min()[NR::X] + 0.5);
626 ibox.y0 = (int) floor(sf * dbox.min()[NR::Y] + 0.5);
627 ibox.x1 = (int) floor(sf * dbox.max()[NR::X] + 0.5);
628 ibox.y1 = (int) floor(sf * dbox.max()[NR::Y] + 0.5);
630 if ( dump ) {
631 g_message( " box --'%s' (%f,%f)-(%f,%f)", name, (double)ibox.x0, (double)ibox.y0, (double)ibox.x1, (double)ibox.y1 );
632 }
634 /* Find button visible area */
635 int width = ibox.x1 - ibox.x0;
636 int height = ibox.y1 - ibox.y0;
638 if ( dump ) {
639 g_message( " vis --'%s' (%d,%d)", name, width, height );
640 }
642 {
643 int block = std::max(width, height);
644 if (block != static_cast<int>(psize) ) {
645 if ( dump ) {
646 g_message(" resizing" );
647 }
648 sf = (double)psize / (double)block;
650 nr_matrix_set_scale(&t, sf, sf);
651 nr_arena_item_set_transform(root, &t);
652 nr_matrix_set_identity(&gc.transform);
653 nr_arena_item_invoke_update( root, NULL, &gc,
654 NR_ARENA_ITEM_STATE_ALL,
655 NR_ARENA_ITEM_STATE_NONE );
656 /* Item integer bbox in points */
657 ibox.x0 = (int) floor(sf * dbox.min()[NR::X] + 0.5);
658 ibox.y0 = (int) floor(sf * dbox.min()[NR::Y] + 0.5);
659 ibox.x1 = (int) floor(sf * dbox.max()[NR::X] + 0.5);
660 ibox.y1 = (int) floor(sf * dbox.max()[NR::Y] + 0.5);
662 if ( dump ) {
663 g_message( " box2 --'%s' (%f,%f)-(%f,%f)", name, (double)ibox.x0, (double)ibox.y0, (double)ibox.x1, (double)ibox.y1 );
664 }
666 /* Find button visible area */
667 width = ibox.x1 - ibox.x0;
668 height = ibox.y1 - ibox.y0;
669 if ( dump ) {
670 g_message( " vis2 --'%s' (%d,%d)", name, width, height );
671 }
672 }
673 }
675 int dx, dy;
676 //dx = (psize - width) / 2;
677 //dy = (psize - height) / 2;
678 dx=dy=psize;
679 dx=(dx-width)/2; // watch out for psize, since 'unsigned'-'signed' can cause problems if the result is negative
680 dy=(dy-height)/2;
681 NRRectL area;
682 area.x0 = ibox.x0 - dx;
683 area.y0 = ibox.y0 - dy;
684 area.x1 = area.x0 + psize;
685 area.y1 = area.y0 + psize;
686 /* Actual renderable area */
687 NRRectL ua;
688 ua.x0 = MAX(ibox.x0, area.x0);
689 ua.y0 = MAX(ibox.y0, area.y0);
690 ua.x1 = MIN(ibox.x1, area.x1);
691 ua.y1 = MIN(ibox.y1, area.y1);
693 if ( dump ) {
694 g_message( " area --'%s' (%f,%f)-(%f,%f)", name, (double)area.x0, (double)area.y0, (double)area.x1, (double)area.y1 );
695 g_message( " ua --'%s' (%f,%f)-(%f,%f)", name, (double)ua.x0, (double)ua.y0, (double)ua.x1, (double)ua.y1 );
696 }
697 /* Set up pixblock */
698 px = nr_new(guchar, 4 * psize * psize);
699 memset(px, 0x00, 4 * psize * psize);
700 /* Render */
701 NRPixBlock B;
702 nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
703 ua.x0, ua.y0, ua.x1, ua.y1,
704 px + 4 * psize * (ua.y0 - area.y0) +
705 4 * (ua.x0 - area.x0),
706 4 * psize, FALSE, FALSE );
707 nr_arena_item_invoke_render( root, &ua, &B,
708 NR_ARENA_ITEM_RENDER_NO_CACHE );
709 nr_pixblock_release(&B);
711 gint useOverlay = prefs_get_int_attribute_limited( "debug.icons", "overlaySvg", 0, 0, 1 );
712 if ( useOverlay ) {
713 sp_icon_overlay_pixels( px, psize, psize, 4 * psize, 0x00, 0x00, 0xff );
714 }
715 }
716 }
717 }
719 return px;
720 } // end of sp_icon_doc_icon()
724 struct svg_doc_cache_t
725 {
726 SPDocument *doc;
727 NRArenaItem *root;
728 };
730 static std::map<Glib::ustring, svg_doc_cache_t *> doc_cache;
731 static std::map<Glib::ustring, guchar *> px_cache;
733 static Glib::ustring icon_cache_key(gchar const *name,
734 unsigned lsize, unsigned psize)
735 {
736 Glib::ustring key=name;
737 key += ":";
738 key += lsize;
739 key += ":";
740 key += psize;
741 return key;
742 }
744 static guchar *get_cached_pixels(Glib::ustring const &key) {
745 std::map<Glib::ustring, guchar *>::iterator found=px_cache.find(key);
746 if ( found != px_cache.end() ) {
747 return found->second;
748 }
749 return NULL;
750 }
752 static guchar *load_svg_pixels(gchar const *name,
753 unsigned lsize, unsigned psize)
754 {
755 SPDocument *doc = NULL;
756 NRArenaItem *root = NULL;
757 svg_doc_cache_t *info = NULL;
759 // Fall back from user prefs dir into system locations.
760 Glib::ustring iconsvg = name;
761 iconsvg += ".svg";
762 std::list<gchar *> sources;
763 sources.push_back(g_build_filename(profile_path("icons"),iconsvg.c_str(), NULL));
764 sources.push_back(g_build_filename(profile_path("icons"),"icons.svg", NULL));
765 sources.push_back(g_build_filename(INKSCAPE_PIXMAPDIR, iconsvg.c_str(), NULL));
766 sources.push_back(g_build_filename(INKSCAPE_PIXMAPDIR, "icons.svg", NULL));
768 // Try each document in turn until we successfully load the icon from one
769 guchar *px=NULL;
770 while ( !sources.empty() && !px ) {
771 gchar *doc_filename = sources.front();
773 // Did we already load this doc?
774 Glib::ustring key(doc_filename);
775 info = 0;
776 {
777 std::map<Glib::ustring, svg_doc_cache_t *>::iterator i = doc_cache.find(key);
778 if ( i != doc_cache.end() ) {
779 info = i->second;
780 }
781 }
783 /* Try to load from document. */
784 if (!info &&
785 Inkscape::IO::file_test( doc_filename, G_FILE_TEST_IS_REGULAR ) &&
786 (doc = sp_document_new( doc_filename, FALSE )) ) {
788 // prep the document
789 sp_document_ensure_up_to_date(doc);
790 /* Create new arena */
791 NRArena *arena = NRArena::create();
792 /* Create ArenaItem and set transform */
793 unsigned visionkey = sp_item_display_key_new(1);
794 /* fixme: Memory manage root if needed (Lauris) */
795 root = sp_item_invoke_show( SP_ITEM(SP_DOCUMENT_ROOT(doc)),
796 arena, visionkey, SP_ITEM_SHOW_DISPLAY );
798 // store into the cache
799 info = new svg_doc_cache_t;
800 g_assert(info);
802 info->doc=doc;
803 info->root=root;
804 doc_cache[key]=info;
805 }
806 if (info) {
807 doc=info->doc;
808 root=info->root;
809 }
811 // toss the filename
812 g_free(doc_filename);
813 sources.pop_front();
815 // move on to the next document if we couldn't get anything
816 if (!info && !doc) continue;
818 px = sp_icon_doc_icon( doc, root, name, psize );
819 }
821 return px;
822 }
824 // returns true if icon needed preloading, false if nothing was done
825 static bool prerender_icon(gchar const *name, unsigned lsize, unsigned psize)
826 {
827 Glib::ustring key=icon_cache_key(name, lsize, psize);
828 guchar *px=get_cached_pixels(key);
829 if (px) {
830 return false;
831 } else {
832 px = load_svg_pixels(name, lsize, psize);
833 if (px) {
834 px_cache[key] = px;
835 }
836 return true;
837 }
838 }
840 static guchar *
841 sp_icon_image_load_svg(gchar const *name, unsigned lsize, unsigned psize)
842 {
843 Glib::ustring key=icon_cache_key(name, lsize, psize);
845 // did we already load this icon at this scale/size?
846 guchar *px=get_cached_pixels(key);
847 if (!px) {
848 px = load_svg_pixels(name, lsize, psize);
849 if (px) {
850 px_cache[key] = px;
851 }
852 }
853 return px;
854 }
856 void sp_icon_overlay_pixels(guchar *px, int width, int height, int stride,
857 unsigned r, unsigned g, unsigned b)
858 {
859 for ( int y = 0; y < height; y += 4 ) {
860 guchar *ptr = px + y * stride;
861 for ( int x = 0; x < width; x += 4 ) {
862 *(ptr++) = r;
863 *(ptr++) = g;
864 *(ptr++) = b;
865 *(ptr++) = 0xff;
867 ptr += 4 * 3;
868 }
869 }
871 if ( width > 1 && height > 1 ) {
872 // point at the last pixel
873 guchar *ptr = px + ((height-1) * stride) + ((width - 1) * 4);
875 if ( width > 2 ) {
876 px[4] = r;
877 px[5] = g;
878 px[6] = b;
879 px[7] = 0xff;
881 ptr[-12] = r;
882 ptr[-11] = g;
883 ptr[-10] = b;
884 ptr[-9] = 0xff;
885 }
887 ptr[-4] = r;
888 ptr[-3] = g;
889 ptr[-2] = b;
890 ptr[-1] = 0xff;
892 px[0 + stride] = r;
893 px[1 + stride] = g;
894 px[2 + stride] = b;
895 px[3 + stride] = 0xff;
897 ptr[0 - stride] = r;
898 ptr[1 - stride] = g;
899 ptr[2 - stride] = b;
900 ptr[3 - stride] = 0xff;
902 if ( height > 2 ) {
903 ptr[0 - stride * 3] = r;
904 ptr[1 - stride * 3] = g;
905 ptr[2 - stride * 3] = b;
906 ptr[3 - stride * 3] = 0xff;
907 }
908 }
909 }
911 class preRenderItem
912 {
913 public:
914 preRenderItem( Inkscape::IconSize lsize, gchar const *name ) :
915 _lsize( lsize ),
916 _name( name )
917 {}
918 Inkscape::IconSize _lsize;
919 Glib::ustring _name;
920 };
923 #include <queue>
925 static std::queue<preRenderItem> pendingRenders;
926 static bool callbackHooked = false;
928 static void addPreRender( Inkscape::IconSize lsize, gchar const *name )
929 {
931 if ( !callbackHooked )
932 {
933 callbackHooked = true;
934 g_idle_add_full( G_PRIORITY_LOW, &icon_prerender_task, NULL, NULL );
935 }
937 pendingRenders.push(preRenderItem(lsize, name));
938 }
940 gboolean icon_prerender_task(gpointer data) {
941 if (!pendingRenders.empty()) {
942 preRenderItem single=pendingRenders.front();
943 pendingRenders.pop();
944 int psize = sp_icon_get_phys_size(single._lsize);
945 prerender_icon(single._name.c_str(), single._lsize, psize);
946 }
948 if (!pendingRenders.empty()) {
949 return TRUE;
950 } else {
951 callbackHooked = false;
952 return FALSE;
953 }
954 }
956 /*
957 Local Variables:
958 mode:c++
959 c-file-style:"stroustrup"
960 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
961 indent-tabs-mode:nil
962 fill-column:99
963 End:
964 */
965 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :