src/widgets/icon.cpp

   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  */
  13
  14 #ifdef HAVE_CONFIG_H
  15 # include "config.h"
  16 #endif
  17
  18 #include <cstring>
  19 #include <glib/gmem.h>
  20 #include <gtk/gtkiconfactory.h>
  21 #include <gtk/gtkstock.h>
  22 #include <gtk/gtkimage.h>
  23 #include <gtkmm/iconfactory.h>
  24 #include <gtkmm/iconset.h>
  25 #include <gtkmm/iconsource.h>
  26 #include <gtkmm/image.h>
  27
  28 #include "path-prefix.h"
  29 #include "prefs-utils.h"
  30 #include "inkscape.h"
  31 #include "document.h"
  32 #include "sp-item.h"
  33 #include "display/nr-arena.h"
  34 #include "display/nr-arena-item.h"
  35 #include "io/sys.h"
  36
  37 #include "icon.h"
  38
  39 static gboolean icon_prerender_task(gpointer data);
  40
  41 static void addPreRender( Inkscape::IconSize lsize, gchar const *name );
  42
  43 static void sp_icon_class_init(SPIconClass *klass);
  44 static void sp_icon_init(SPIcon *icon);
  45 static void sp_icon_destroy(GtkObject *object);
  46
  47 static void sp_icon_reset(SPIcon *icon);
  48 static void sp_icon_clear(SPIcon *icon);
  49
  50 static void sp_icon_size_request(GtkWidget *widget, GtkRequisition *requisition);
  51 static void sp_icon_size_allocate(GtkWidget *widget, GtkAllocation *allocation);
  52 static int sp_icon_expose(GtkWidget *widget, GdkEventExpose *event);
  53
  54 static void sp_icon_paint(SPIcon *icon, GdkRectangle const *area);
  55
  56 static void sp_icon_screen_changed( GtkWidget *widget, GdkScreen *previous_screen );
  57 static void sp_icon_style_set( GtkWidget *widget, GtkStyle *previous_style );
  58 static void sp_icon_theme_changed( SPIcon *icon );
  59
  60 static GdkPixbuf *sp_icon_image_load_pixmap(gchar const *name, unsigned lsize, unsigned psize);
  61 static GdkPixbuf *sp_icon_image_load_svg(gchar const *name, unsigned lsize, unsigned psize);
  62
  63 static void sp_icon_overlay_pixels( guchar *px, int width, int height, int stride,
  64                                     unsigned r, unsigned g, unsigned b );
  65
  66 static void injectCustomSize();
  67
  68 static GtkWidgetClass *parent_class;
  69
  70 static bool sizeDirty = true;
  71
  72 static bool sizeMapDone = false;
  73 static GtkIconSize iconSizeLookup[] = {
  74     GTK_ICON_SIZE_INVALID,
  75     GTK_ICON_SIZE_MENU,
  76     GTK_ICON_SIZE_SMALL_TOOLBAR,
  77     GTK_ICON_SIZE_LARGE_TOOLBAR,
  78     GTK_ICON_SIZE_BUTTON,
  79     GTK_ICON_SIZE_DND,
  80     GTK_ICON_SIZE_DIALOG,
  81     GTK_ICON_SIZE_MENU, // for Inkscape::ICON_SIZE_DECORATION
  82 };
  83
  84 static Glib::RefPtr<Gtk::IconFactory> inkyIcons;
  85 static std::map<Glib::ustring, Gtk::IconSet *> iconSetCache;
  86
  87
  88 GtkType
  89 sp_icon_get_type()
  90 {
  91     static GtkType type = 0;
  92     if (!type) {
  93         GtkTypeInfo info = {
  94             "SPIcon",
  95             sizeof(SPIcon),
  96             sizeof(SPIconClass),
  97             (GtkClassInitFunc) sp_icon_class_init,
  98             (GtkObjectInitFunc) sp_icon_init,
  99             NULL, NULL, NULL
 100         };
 101         type = gtk_type_unique(GTK_TYPE_WIDGET, &info);
 102     }
 103     return type;
 104 }
 105
 106 static void
 107 sp_icon_class_init(SPIconClass *klass)
 108 {
 109     GtkObjectClass *object_class;
 110     GtkWidgetClass *widget_class;
 111
 112     object_class = (GtkObjectClass *) klass;
 113     widget_class = (GtkWidgetClass *) klass;
 114
 115     parent_class = (GtkWidgetClass*)g_type_class_peek_parent(klass);
 116
 117     object_class->destroy = sp_icon_destroy;
 118
 119     widget_class->size_request = sp_icon_size_request;
 120     widget_class->size_allocate = sp_icon_size_allocate;
 121     widget_class->expose_event = sp_icon_expose;
 122     widget_class->screen_changed = sp_icon_screen_changed;
 123     widget_class->style_set = sp_icon_style_set;
 124 }
 125
 126
 127 static void
 128 sp_icon_init(SPIcon *icon)
 129 {
 130     GTK_WIDGET_FLAGS(icon) |= GTK_NO_WINDOW;
 131     icon->lsize = Inkscape::ICON_SIZE_BUTTON;
 132     icon->psize = 0;
 133     icon->name = 0;
 134     icon->pb = 0;
 135     icon->pb_faded = 0;
 136 }
 137
 138 static void
 139 sp_icon_destroy(GtkObject *object)
 140 {
 141     SPIcon *icon = SP_ICON(object);
 142     sp_icon_clear(icon);
 143     if ( icon->name ) {
 144         g_free( icon->name );
 145         icon->name = 0;
 146     }
 147
 148     ((GtkObjectClass *) (parent_class))->destroy(object);
 149 }
 150
 151 static void sp_icon_reset( SPIcon *icon ) {
 152     icon->psize = 0;
 153     sp_icon_clear(icon);
 154 }
 155
 156 static void sp_icon_clear( SPIcon *icon ) {
 157     if (icon->pb) {
 158         g_object_unref(G_OBJECT(icon->pb));
 159         icon->pb = NULL;
 160     }
 161     if (icon->pb_faded) {
 162         g_object_unref(G_OBJECT(icon->pb_faded));
 163         icon->pb_faded = NULL;
 164     }
 165 }
 166
 167 static void
 168 sp_icon_size_request(GtkWidget *widget, GtkRequisition *requisition)
 169 {
 170     SPIcon const *icon = SP_ICON(widget);
 171
 172     int const size = ( icon->psize
 173                        ? icon->psize
 174                        : sp_icon_get_phys_size(icon->lsize) );
 175     requisition->width = size;
 176     requisition->height = size;
 177 }
 178
 179 static void
 180 sp_icon_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
 181 {
 182     widget->allocation = *allocation;
 183
 184     if (GTK_WIDGET_DRAWABLE(widget)) {
 185         gtk_widget_queue_draw(widget);
 186     }
 187 }
 188
 189 static int sp_icon_expose(GtkWidget *widget, GdkEventExpose *event)
 190 {
 191     if ( GTK_WIDGET_DRAWABLE(widget) ) {
 192         SPIcon *icon = SP_ICON(widget);
 193         if ( !icon->pb ) {
 194             sp_icon_fetch_pixbuf( icon );
 195         }
 196
 197         sp_icon_paint(SP_ICON(widget), &event->area);
 198     }
 199
 200     return TRUE;
 201 }
 202
 203 // PUBLIC CALL:
 204 void sp_icon_fetch_pixbuf( SPIcon *icon )
 205 {
 206     if ( icon ) {
 207         if ( !icon->pb ) {
 208             icon->psize = sp_icon_get_phys_size(icon->lsize);
 209
 210             GdkPixbuf *pb = sp_icon_image_load_svg( icon->name, icon->lsize, icon->psize );
 211             if (!pb) {
 212                 pb = sp_icon_image_load_pixmap( icon->name, icon->lsize, icon->psize );
 213             }
 214
 215             if ( pb ) {
 216                 icon->pb = pb;
 217                 icon->pb_faded = gdk_pixbuf_copy(icon->pb);
 218                 gdk_pixbuf_saturate_and_pixelate(icon->pb, icon->pb_faded, 0.5, TRUE);
 219             } else {
 220                 /* TODO: We should do something more useful if we can't load the image. */
 221                 g_warning ("failed to load icon '%s'", icon->name);
 222             }
 223         }
 224     }
 225 }
 226
 227 static void sp_icon_screen_changed( GtkWidget *widget, GdkScreen *previous_screen )
 228 {
 229     if ( GTK_WIDGET_CLASS( parent_class )->screen_changed ) {
 230         GTK_WIDGET_CLASS( parent_class )->screen_changed( widget, previous_screen );
 231     }
 232     SPIcon *icon = SP_ICON(widget);
 233     sp_icon_theme_changed(icon);
 234 }
 235
 236 static void sp_icon_style_set( GtkWidget *widget, GtkStyle *previous_style )
 237 {
 238     if ( GTK_WIDGET_CLASS( parent_class )->style_set ) {
 239         GTK_WIDGET_CLASS( parent_class )->style_set( widget, previous_style );
 240     }
 241     SPIcon *icon = SP_ICON(widget);
 242     sp_icon_theme_changed(icon);
 243 }
 244
 245 static void sp_icon_theme_changed( SPIcon *icon )
 246 {
 247     //g_message("Got a change bump for this icon");
 248     sizeDirty = true;
 249     sp_icon_reset(icon);
 250     gtk_widget_queue_draw( GTK_WIDGET(icon) );
 251 }
 252
 253
 254 static GtkWidget *
 255 sp_icon_new_full( Inkscape::IconSize lsize, gchar const *name )
 256 {
 257     static gint dump = prefs_get_int_attribute_limited( "debug.icons", "dumpGtk", 0, 0, 1 );
 258     static gint fallback = prefs_get_int_attribute_limited( "debug.icons", "checkNames", 0, 0, 1 );
 259
 260     addPreRender( lsize, name );
 261
 262     GtkStockItem stock;
 263     gboolean tryLoad = gtk_stock_lookup( name, &stock );
 264     if ( !tryLoad && fallback ) {
 265         tryLoad |= strncmp("gtk-", name, 4 ) == 0;
 266     }
 267     if ( !tryLoad && fallback ) {
 268         tryLoad |= strncmp("gnome-", name, 6 ) == 0;
 269     }
 270
 271     GtkWidget *widget = 0;
 272     if ( tryLoad ) {
 273         gint trySize = CLAMP( static_cast<gint>(lsize), 0, static_cast<gint>(G_N_ELEMENTS(iconSizeLookup) - 1) );
 274
 275         if ( !sizeMapDone ) {
 276             injectCustomSize();
 277         }
 278
 279         GtkWidget *img = gtk_image_new_from_stock( name, iconSizeLookup[trySize] );
 280         if ( img ) {
 281             GtkImageType type = gtk_image_get_storage_type( GTK_IMAGE(img) );
 282             if ( type == GTK_IMAGE_STOCK ) {
 283                 widget = GTK_WIDGET(img);
 284                 img = 0;
 285
 286                 if ( dump ) {
 287                     g_message( "loaded gtk  '%s' %d  (GTK_IMAGE_STOCK)", name, lsize );
 288                 }
 289             } else {
 290                 if ( dump ) {
 291                     g_message( "skipped gtk '%s' %d  (not GTK_IMAGE_STOCK)", name, lsize );
 292                 }
 293                 g_object_unref( (GObject *)img );
 294                 img = 0;
 295             }
 296         }
 297     }
 298
 299     if ( !widget ) {
 300         SPIcon *icon = (SPIcon *)g_object_new(SP_TYPE_ICON, NULL);
 301         icon->lsize = lsize;
 302         icon->name = g_strdup(name);
 303         icon->psize = sp_icon_get_phys_size(lsize);
 304
 305         widget = GTK_WIDGET(icon);
 306     }
 307
 308     return widget;
 309 }
 310
 311 GtkWidget *
 312 sp_icon_new( Inkscape::IconSize lsize, gchar const *name )
 313 {
 314     return sp_icon_new_full( lsize, name );
 315 }
 316
 317 // PUBLIC CALL:
 318 Gtk::Widget *sp_icon_get_icon( Glib::ustring const &oid, Inkscape::IconSize size )
 319 {
 320     Gtk::Widget *result = 0;
 321     GtkWidget *widget = sp_icon_new_full( size, oid.c_str() );
 322
 323     if ( widget ) {
 324         if ( GTK_IS_IMAGE(widget) ) {
 325             GtkImage *img = GTK_IMAGE(widget);
 326             result = Glib::wrap( img );
 327         } else {
 328             result = Glib::wrap( widget );
 329         }
 330     }
 331
 332     return result;
 333 }
 334
 335 GtkIconSize
 336 sp_icon_get_gtk_size(int size)
 337 {
 338     static GtkIconSize sizemap[64] = {(GtkIconSize)0};
 339     size = CLAMP(size, 4, 63);
 340     if (!sizemap[size]) {
 341         static int count = 0;
 342         char c[64];
 343         g_snprintf(c, 64, "InkscapeIcon%d", count++);
 344         sizemap[size] = gtk_icon_size_register(c, size, size);
 345     }
 346     return sizemap[size];
 347 }
 348
 349 static void injectCustomSize()
 350 {
 351     // TODO - still need to handle the case of theme changes and resize, especially as we can't re-register a string.
 352     if ( !sizeMapDone )
 353     {
 354         gint dump = prefs_get_int_attribute_limited( "debug.icons", "dumpDefault", 0, 0, 1 );
 355         gint width = 0;
 356         gint height = 0;
 357         if ( gtk_icon_size_lookup(GTK_ICON_SIZE_MENU, &width, &height ) ) {
 358             gint newWidth = ((width * 3) / 4);
 359             gint newHeight = ((height * 3) / 4);
 360             GtkIconSize newSizeEnum = gtk_icon_size_register( "inkscape-decoration", newWidth, newHeight );
 361             if ( newSizeEnum ) {
 362                 if ( dump ) {
 363                     g_message("Registered (%d, %d) <= (%d, %d) as index %d", newWidth, newHeight, width, height, newSizeEnum);
 364                 }
 365                 guint index = static_cast<guint>(Inkscape::ICON_SIZE_DECORATION);
 366                 if ( index < G_N_ELEMENTS(iconSizeLookup) ) {
 367                     iconSizeLookup[index] = newSizeEnum;
 368                 } else if ( dump ) {
 369                     g_message("size lookup array too small to store entry");
 370                 }
 371             }
 372         }
 373         sizeMapDone = true;
 374     }
 375
 376     static bool hit = false;
 377     if ( !hit ) {
 378         hit = true;
 379         inkyIcons = Gtk::IconFactory::create();
 380         inkyIcons->add_default();
 381     }
 382 }
 383
 384 // PUBLIC CALL:
 385 int sp_icon_get_phys_size(int size)
 386 {
 387     static bool init = false;
 388     static int lastSys[Inkscape::ICON_SIZE_DECORATION + 1];
 389     static int vals[Inkscape::ICON_SIZE_DECORATION + 1];
 390
 391     size = CLAMP( size, GTK_ICON_SIZE_MENU, Inkscape::ICON_SIZE_DECORATION );
 392
 393     if ( !sizeMapDone ) {
 394         injectCustomSize();
 395     }
 396
 397     if ( sizeDirty && init ) {
 398         GtkIconSize const gtkSizes[] = {
 399             GTK_ICON_SIZE_MENU,
 400             GTK_ICON_SIZE_SMALL_TOOLBAR,
 401             GTK_ICON_SIZE_LARGE_TOOLBAR,
 402             GTK_ICON_SIZE_BUTTON,
 403             GTK_ICON_SIZE_DND,
 404             GTK_ICON_SIZE_DIALOG,
 405             static_cast<guint>(Inkscape::ICON_SIZE_DECORATION) < G_N_ELEMENTS(iconSizeLookup) ?
 406                 iconSizeLookup[static_cast<int>(Inkscape::ICON_SIZE_DECORATION)] :
 407                 GTK_ICON_SIZE_MENU
 408         };
 409         for (unsigned i = 0; i < G_N_ELEMENTS(gtkSizes) && init; ++i) {
 410             guint const val_ix = (gtkSizes[i] <= GTK_ICON_SIZE_DIALOG) ? (guint)gtkSizes[i] : (guint)Inkscape::ICON_SIZE_DECORATION;
 411
 412             g_assert( val_ix < G_N_ELEMENTS(vals) );
 413
 414             gint width = 0;
 415             gint height = 0;
 416             if ( gtk_icon_size_lookup(gtkSizes[i], &width, &height ) ) {
 417                 init &= (lastSys[val_ix] == std::max(width, height));
 418             }
 419         }
 420     }
 421
 422     if ( !init ) {
 423         sizeDirty = false;
 424         gint dump = prefs_get_int_attribute_limited( "debug.icons", "dumpDefault", 0, 0, 1 );
 425
 426         if ( dump ) {
 427             g_message( "Default icon sizes:" );
 428         }
 429         memset( vals, 0, sizeof(vals) );
 430         memset( lastSys, 0, sizeof(lastSys) );
 431         GtkIconSize const gtkSizes[] = {
 432             GTK_ICON_SIZE_MENU,
 433             GTK_ICON_SIZE_SMALL_TOOLBAR,
 434             GTK_ICON_SIZE_LARGE_TOOLBAR,
 435             GTK_ICON_SIZE_BUTTON,
 436             GTK_ICON_SIZE_DND,
 437             GTK_ICON_SIZE_DIALOG,
 438             static_cast<guint>(Inkscape::ICON_SIZE_DECORATION) < G_N_ELEMENTS(iconSizeLookup) ?
 439                 iconSizeLookup[static_cast<int>(Inkscape::ICON_SIZE_DECORATION)] :
 440                 GTK_ICON_SIZE_MENU
 441         };
 442         gchar const *const names[] = {
 443             "GTK_ICON_SIZE_MENU",
 444             "GTK_ICON_SIZE_SMALL_TOOLBAR",
 445             "GTK_ICON_SIZE_LARGE_TOOLBAR",
 446             "GTK_ICON_SIZE_BUTTON",
 447             "GTK_ICON_SIZE_DND",
 448             "GTK_ICON_SIZE_DIALOG",
 449             "inkscape-decoration"
 450         };
 451
 452         GtkWidget *icon = (GtkWidget *)g_object_new(SP_TYPE_ICON, NULL);
 453
 454         for (unsigned i = 0; i < G_N_ELEMENTS(gtkSizes); ++i) {
 455             guint const val_ix = (gtkSizes[i] <= GTK_ICON_SIZE_DIALOG) ? (guint)gtkSizes[i] : (guint)Inkscape::ICON_SIZE_DECORATION;
 456
 457             g_assert( val_ix < G_N_ELEMENTS(vals) );
 458
 459             gint width = 0;
 460             gint height = 0;
 461             bool used = false;
 462             if ( gtk_icon_size_lookup(gtkSizes[i], &width, &height ) ) {
 463                 vals[val_ix] = std::max(width, height);
 464                 lastSys[val_ix] = vals[val_ix];
 465                 used = true;
 466             }
 467             if (dump) {
 468                 g_message(" =--  %u  size:%d  %c(%d, %d)   '%s'",
 469                           i, gtkSizes[i],
 470                           ( used ? ' ' : 'X' ), width, height, names[i]);
 471             }
 472             gchar const *id = GTK_STOCK_OPEN;
 473             GdkPixbuf *pb = gtk_widget_render_icon( icon, id, gtkSizes[i], NULL);
 474             if (pb) {
 475                 width = gdk_pixbuf_get_width(pb);
 476                 height = gdk_pixbuf_get_height(pb);
 477                 int newSize = std::max( width, height );
 478                 // TODO perhaps check a few more stock icons to get a range on sizes.
 479                 if ( newSize > 0 ) {
 480                     vals[val_ix] = newSize;
 481                 }
 482                 if (dump) {
 483                     g_message("      %u  size:%d   (%d, %d)", i, gtkSizes[i], width, height);
 484                 }
 485
 486                 g_object_unref(G_OBJECT(pb));
 487             }
 488         }
 489         //g_object_unref(icon);
 490         init = true;
 491     }
 492
 493     return vals[size];
 494 }
 495
 496 static void sp_icon_paint(SPIcon *icon, GdkRectangle const *area)
 497 {
 498     GtkWidget &widget = *GTK_WIDGET(icon);
 499
 500     GdkPixbuf *image = GTK_WIDGET_IS_SENSITIVE(&widget) ? icon->pb : icon->pb_faded;
 501
 502     if (image) {
 503         int const padx = ( ( widget.allocation.width > icon->psize )
 504                            ? ( widget.allocation.width - icon->psize ) / 2
 505                            : 0 );
 506         int const pady = ( ( widget.allocation.height > icon->psize )
 507                            ? ( widget.allocation.height - icon->psize ) / 2
 508                            : 0 );
 509
 510         int const x0 = std::max(area->x, widget.allocation.x + padx);
 511         int const y0 = std::max(area->y, widget.allocation.y + pady);
 512         int const x1 = std::min(area->x + area->width,  widget.allocation.x + padx + static_cast<int>(icon->psize) );
 513         int const y1 = std::min(area->y + area->height, widget.allocation.y + pady + static_cast<int>(icon->psize) );
 514
 515         int width = x1 - x0;
 516         int height = y1 - y0;
 517         // Limit drawing to when we actually have something. Avoids some crashes.
 518         if ( (width > 0) && (height > 0) ) {
 519             gdk_draw_pixbuf(GDK_DRAWABLE(widget.window), NULL, image,
 520                             x0 - widget.allocation.x - padx,
 521                             y0 - widget.allocation.y - pady,
 522                             x0, y0,
 523                             width, height,
 524                             GDK_RGB_DITHER_NORMAL, x0, y0);
 525         }
 526     }
 527 }
 528
 529 GdkPixbuf *sp_icon_image_load_pixmap(gchar const *name, unsigned /*lsize*/, unsigned psize)
 530 {
 531     gchar *path = (gchar *) g_strdup_printf("%s/%s.png", INKSCAPE_PIXMAPDIR, name);
 532     // TODO: bulia, please look over
 533     gsize bytesRead = 0;
 534     gsize bytesWritten = 0;
 535     GError *error = NULL;
 536     gchar *localFilename = g_filename_from_utf8( path,
 537                                                  -1,
 538                                                  &bytesRead,
 539                                                  &bytesWritten,
 540                                                  &error);
 541     GdkPixbuf *pb = gdk_pixbuf_new_from_file(localFilename, NULL);
 542     g_free(localFilename);
 543     g_free(path);
 544     if (!pb) {
 545         path = (gchar *) g_strdup_printf("%s/%s.xpm", 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         pb = gdk_pixbuf_new_from_file(localFilename, NULL);
 556         g_free(localFilename);
 557         g_free(path);
 558     }
 559
 560     if (pb) {
 561         if (!gdk_pixbuf_get_has_alpha(pb)) {
 562             gdk_pixbuf_add_alpha(pb, FALSE, 0, 0, 0);
 563         }
 564
 565         if ( ( static_cast<unsigned>(gdk_pixbuf_get_width(pb)) != psize )
 566              || ( static_cast<unsigned>(gdk_pixbuf_get_height(pb)) != psize ) ) {
 567             GdkPixbuf *spb = gdk_pixbuf_scale_simple(pb, psize, psize, GDK_INTERP_HYPER);
 568             g_object_unref(G_OBJECT(pb));
 569             pb = spb;
 570         }
 571     }
 572
 573     return pb;
 574 }
 575
 576 // takes doc, root, icon, and icon name to produce pixels
 577 extern "C" guchar *
 578 sp_icon_doc_icon( SPDocument *doc, NRArenaItem *root,
 579                   gchar const *name, unsigned psize )
 580 {
 581     gint const dump = prefs_get_int_attribute_limited( "debug.icons", "dumpSvg", 0, 0, 1 );
 582     guchar *px = NULL;
 583
 584     if (doc) {
 585         SPObject *object = doc->getObjectById(name);
 586         if (object && SP_IS_ITEM(object)) {
 587             /* Find bbox in document */
 588             NR::Matrix const i2doc(from_2geom(sp_item_i2doc_affine(SP_ITEM(object))));
 589             NR::Maybe<NR::Rect> dbox = SP_ITEM(object)->getBounds(i2doc);
 590
 591             if ( SP_OBJECT_PARENT(object) == NULL )
 592             {
 593                 dbox = NR::Rect(NR::Point(0, 0),
 594                                 NR::Point(sp_document_width(doc), sp_document_height(doc)));
 595             }
 596
 597             /* This is in document coordinates, i.e. pixels */
 598             if ( dbox && !dbox->isEmpty() ) {
 599                 NRGC gc(NULL);
 600                 /* Update to renderable state */
 601                 double sf = 1.0;
 602                 nr_arena_item_set_transform(root, NR::Matrix(NR::scale(sf, sf)));
 603                 gc.transform.set_identity();
 604                 nr_arena_item_invoke_update( root, NULL, &gc,
 605                                              NR_ARENA_ITEM_STATE_ALL,
 606                                              NR_ARENA_ITEM_STATE_NONE );
 607                 /* Item integer bbox in points */
 608                 NRRectL ibox;
 609                 ibox.x0 = (int) floor(sf * dbox->min()[NR::X] + 0.5);
 610                 ibox.y0 = (int) floor(sf * dbox->min()[NR::Y] + 0.5);
 611                 ibox.x1 = (int) floor(sf * dbox->max()[NR::X] + 0.5);
 612                 ibox.y1 = (int) floor(sf * dbox->max()[NR::Y] + 0.5);
 613
 614                 if ( dump ) {
 615                     g_message( "   box    --'%s'  (%f,%f)-(%f,%f)", name, (double)ibox.x0, (double)ibox.y0, (double)ibox.x1, (double)ibox.y1 );
 616                 }
 617
 618                 /* Find button visible area */
 619                 int width = ibox.x1 - ibox.x0;
 620                 int height = ibox.y1 - ibox.y0;
 621
 622                 if ( dump ) {
 623                     g_message( "   vis    --'%s'  (%d,%d)", name, width, height );
 624                 }
 625
 626                 {
 627                     int block = std::max(width, height);
 628                     if (block != static_cast<int>(psize) ) {
 629                         if ( dump ) {
 630                             g_message("      resizing" );
 631                         }
 632                         sf = (double)psize / (double)block;
 633
 634                         nr_arena_item_set_transform(root, NR::Matrix(NR::scale(sf, sf)));
 635                         gc.transform.set_identity();
 636                         nr_arena_item_invoke_update( root, NULL, &gc,
 637                                                      NR_ARENA_ITEM_STATE_ALL,
 638                                                      NR_ARENA_ITEM_STATE_NONE );
 639                         /* Item integer bbox in points */
 640                         ibox.x0 = (int) floor(sf * dbox->min()[NR::X] + 0.5);
 641                         ibox.y0 = (int) floor(sf * dbox->min()[NR::Y] + 0.5);
 642                         ibox.x1 = (int) floor(sf * dbox->max()[NR::X] + 0.5);
 643                         ibox.y1 = (int) floor(sf * dbox->max()[NR::Y] + 0.5);
 644
 645                         if ( dump ) {
 646                             g_message( "   box2   --'%s'  (%f,%f)-(%f,%f)", name, (double)ibox.x0, (double)ibox.y0, (double)ibox.x1, (double)ibox.y1 );
 647                         }
 648
 649                         /* Find button visible area */
 650                         width = ibox.x1 - ibox.x0;
 651                         height = ibox.y1 - ibox.y0;
 652                         if ( dump ) {
 653                             g_message( "   vis2   --'%s'  (%d,%d)", name, width, height );
 654                         }
 655                     }
 656                 }
 657
 658                 int dx, dy;
 659                 //dx = (psize - width) / 2;
 660                 //dy = (psize - height) / 2;
 661                 dx=dy=psize;
 662                 dx=(dx-width)/2; // watch out for psize, since 'unsigned'-'signed' can cause problems if the result is negative
 663                 dy=(dy-height)/2;
 664                 NRRectL area;
 665                 area.x0 = ibox.x0 - dx;
 666                 area.y0 = ibox.y0 - dy;
 667                 area.x1 = area.x0 + psize;
 668                 area.y1 = area.y0 + psize;
 669                 /* Actual renderable area */
 670                 NRRectL ua;
 671                 ua.x0 = MAX(ibox.x0, area.x0);
 672                 ua.y0 = MAX(ibox.y0, area.y0);
 673                 ua.x1 = MIN(ibox.x1, area.x1);
 674                 ua.y1 = MIN(ibox.y1, area.y1);
 675
 676                 if ( dump ) {
 677                     g_message( "   area   --'%s'  (%f,%f)-(%f,%f)", name, (double)area.x0, (double)area.y0, (double)area.x1, (double)area.y1 );
 678                     g_message( "   ua     --'%s'  (%f,%f)-(%f,%f)", name, (double)ua.x0, (double)ua.y0, (double)ua.x1, (double)ua.y1 );
 679                 }
 680                 /* Set up pixblock */
 681                 px = g_new(guchar, 4 * psize * psize);
 682                 memset(px, 0x00, 4 * psize * psize);
 683                 /* Render */
 684                 NRPixBlock B;
 685                 nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
 686                                           ua.x0, ua.y0, ua.x1, ua.y1,
 687                                           px + 4 * psize * (ua.y0 - area.y0) +
 688                                           4 * (ua.x0 - area.x0),
 689                                           4 * psize, FALSE, FALSE );
 690                 nr_arena_item_invoke_render(NULL, root, &ua, &B,
 691                                              NR_ARENA_ITEM_RENDER_NO_CACHE );
 692                 nr_pixblock_release(&B);
 693
 694                 gint useOverlay = prefs_get_int_attribute_limited( "debug.icons", "overlaySvg", 0, 0, 1 );
 695                 if ( useOverlay ) {
 696                     sp_icon_overlay_pixels( px, psize, psize, 4 * psize, 0x00, 0x00, 0xff );
 697                 }
 698             }
 699         }
 700     }
 701
 702     return px;
 703 } // end of sp_icon_doc_icon()
 704
 705
 706
 707 struct svg_doc_cache_t
 708 {
 709     SPDocument *doc;
 710     NRArenaItem *root;
 711 };
 712
 713 static std::map<Glib::ustring, svg_doc_cache_t *> doc_cache;
 714 static std::map<Glib::ustring, GdkPixbuf *> pb_cache;
 715
 716 static Glib::ustring icon_cache_key(gchar const *name,
 717                                     unsigned lsize, unsigned psize)
 718 {
 719     Glib::ustring key=name;
 720     key += ":";
 721     key += lsize;
 722     key += ":";
 723     key += psize;
 724     return key;
 725 }
 726
 727 static GdkPixbuf *get_cached_pixbuf(Glib::ustring const &key) {
 728     std::map<Glib::ustring, GdkPixbuf *>::iterator found = pb_cache.find(key);
 729     if ( found != pb_cache.end() ) {
 730         return found->second;
 731     }
 732     return NULL;
 733 }
 734
 735 static guchar *load_svg_pixels(gchar const *name,
 736                                unsigned /*lsize*/, unsigned psize)
 737 {
 738     SPDocument *doc = NULL;
 739     NRArenaItem *root = NULL;
 740     svg_doc_cache_t *info = NULL;
 741
 742     // Fall back from user prefs dir into system locations.
 743     Glib::ustring iconsvg = name;
 744     iconsvg += ".svg";
 745     std::list<gchar *> sources;
 746     sources.push_back(g_build_filename(profile_path("icons"),iconsvg.c_str(), NULL));
 747     sources.push_back(g_build_filename(profile_path("icons"),"icons.svg", NULL));
 748     sources.push_back(g_build_filename(INKSCAPE_PIXMAPDIR, iconsvg.c_str(), NULL));
 749     sources.push_back(g_build_filename(INKSCAPE_PIXMAPDIR, "icons.svg", NULL));
 750
 751     // Try each document in turn until we successfully load the icon from one
 752     guchar *px=NULL;
 753     while ( !sources.empty() && !px ) {
 754         gchar *doc_filename = sources.front();
 755
 756         // Did we already load this doc?
 757         Glib::ustring key(doc_filename);
 758         info = 0;
 759         {
 760             std::map<Glib::ustring, svg_doc_cache_t *>::iterator i = doc_cache.find(key);
 761             if ( i != doc_cache.end() ) {
 762                 info = i->second;
 763             }
 764         }
 765
 766         /* Try to load from document. */
 767         if (!info &&
 768             Inkscape::IO::file_test( doc_filename, G_FILE_TEST_IS_REGULAR ) &&
 769             (doc = sp_document_new( doc_filename, FALSE )) ) {
 770
 771             // prep the document
 772             sp_document_ensure_up_to_date(doc);
 773             /* Create new arena */
 774             NRArena *arena = NRArena::create();
 775             /* Create ArenaItem and set transform */
 776             unsigned visionkey = sp_item_display_key_new(1);
 777             /* fixme: Memory manage root if needed (Lauris) */
 778             root = sp_item_invoke_show( SP_ITEM(SP_DOCUMENT_ROOT(doc)),
 779                                         arena, visionkey, SP_ITEM_SHOW_DISPLAY );
 780
 781             // store into the cache
 782             info = new svg_doc_cache_t;
 783             g_assert(info);
 784
 785             info->doc=doc;
 786             info->root=root;
 787             doc_cache[key]=info;
 788         }
 789         if (info) {
 790             doc=info->doc;
 791             root=info->root;
 792         }
 793
 794         // toss the filename
 795         g_free(doc_filename);
 796         sources.pop_front();
 797
 798         // move on to the next document if we couldn't get anything
 799         if (!info && !doc) continue;
 800
 801         px = sp_icon_doc_icon( doc, root, name, psize );
 802     }
 803
 804     return px;
 805 }
 806
 807 static void addToIconSet(GdkPixbuf* pb, gchar const* name, unsigned lsize, unsigned /*psize*/) {
 808     Gtk::IconSet* icnset = 0;
 809     if ( iconSetCache.find(name) == iconSetCache.end() ) {
 810         icnset = new Gtk::IconSet();
 811         iconSetCache[name] = icnset;
 812         inkyIcons->add(Gtk::StockID(name), *icnset);
 813     } else {
 814         icnset = iconSetCache[name];
 815     }
 816     Gtk::IconSource src;
 817     src.set_pixbuf( Glib::wrap(pb) );
 818     src.set_size( Gtk::IconSize(lsize) );
 819     //src.set_state_wildcarded();
 820     icnset->add_source(src);
 821 }
 822
 823 // returns true if icon needed preloading, false if nothing was done
 824 static bool prerender_icon(gchar const *name, unsigned lsize, unsigned psize)
 825 {
 826     Glib::ustring key = icon_cache_key(name, lsize, psize);
 827     GdkPixbuf *pb = get_cached_pixbuf(key);
 828     if (pb) {
 829         return false;
 830     } else {
 831         guchar* px = load_svg_pixels(name, lsize, psize);
 832         if (px) {
 833             pb = gdk_pixbuf_new_from_data(px, GDK_COLORSPACE_RGB, TRUE, 8,
 834                                           psize, psize, psize * 4,
 835                                           /*(GdkPixbufDestroyNotify)g_free*/NULL, NULL);
 836
 837             pb_cache[key] = pb;
 838             addToIconSet(pb, name, lsize, psize);
 839         }
 840         return true;
 841     }
 842 }
 843
 844 static GdkPixbuf *sp_icon_image_load_svg(gchar const *name, unsigned lsize, unsigned psize)
 845 {
 846     Glib::ustring key = icon_cache_key(name, lsize, psize);
 847
 848     // did we already load this icon at this scale/size?
 849     GdkPixbuf* pb = get_cached_pixbuf(key);
 850     if (!pb) {
 851         guchar *px = load_svg_pixels(name, lsize, psize);
 852         if (px) {
 853             // don't pass the g_free because we're caching the pixel
 854             // space loaded through ...
 855             // I just changed this. make sure sp_icon_image_load still does the right thing.
 856             pb = gdk_pixbuf_new_from_data(px, GDK_COLORSPACE_RGB, TRUE, 8,
 857                                           psize, psize, psize * 4,
 858                                           /*(GdkPixbufDestroyNotify)g_free*/NULL, NULL);
 859             pb_cache[key] = pb;
 860             addToIconSet(pb, name, lsize, psize);
 861         }
 862     }
 863
 864     // increase refcount since we're hading out ownership
 865     g_object_ref(G_OBJECT(pb));
 866     return pb;
 867 }
 868
 869 void sp_icon_overlay_pixels(guchar *px, int width, int height, int stride,
 870                             unsigned r, unsigned g, unsigned b)
 871 {
 872     for ( int y = 0; y < height; y += 4 ) {
 873         guchar *ptr = px + y * stride;
 874         for ( int x = 0; x < width; x += 4 ) {
 875             *(ptr++) = r;
 876             *(ptr++) = g;
 877             *(ptr++) = b;
 878             *(ptr++) = 0xff;
 879
 880             ptr += 4 * 3;
 881         }
 882     }
 883
 884     if ( width > 1 && height > 1 ) {
 885         // point at the last pixel
 886         guchar *ptr = px + ((height-1) * stride) + ((width - 1) * 4);
 887
 888         if ( width > 2 ) {
 889             px[4] = r;
 890             px[5] = g;
 891             px[6] = b;
 892             px[7] = 0xff;
 893
 894             ptr[-12] = r;
 895             ptr[-11] = g;
 896             ptr[-10] = b;
 897             ptr[-9] = 0xff;
 898         }
 899
 900         ptr[-4] = r;
 901         ptr[-3] = g;
 902         ptr[-2] = b;
 903         ptr[-1] = 0xff;
 904
 905         px[0 + stride] = r;
 906         px[1 + stride] = g;
 907         px[2 + stride] = b;
 908         px[3 + stride] = 0xff;
 909
 910         ptr[0 - stride] = r;
 911         ptr[1 - stride] = g;
 912         ptr[2 - stride] = b;
 913         ptr[3 - stride] = 0xff;
 914
 915         if ( height > 2 ) {
 916             ptr[0 - stride * 3] = r;
 917             ptr[1 - stride * 3] = g;
 918             ptr[2 - stride * 3] = b;
 919             ptr[3 - stride * 3] = 0xff;
 920         }
 921     }
 922 }
 923
 924 class preRenderItem
 925 {
 926 public:
 927     preRenderItem( Inkscape::IconSize lsize, gchar const *name ) :
 928         _lsize( lsize ),
 929         _name( name )
 930     {}
 931     Inkscape::IconSize _lsize;
 932     Glib::ustring _name;
 933 };
 934
 935
 936 #include <queue>
 937
 938 static std::queue<preRenderItem> pendingRenders;
 939 static bool callbackHooked = false;
 940
 941 static void addPreRender( Inkscape::IconSize lsize, gchar const *name )
 942 {
 943
 944     if ( !callbackHooked )
 945     {
 946         callbackHooked = true;
 947         g_idle_add_full( G_PRIORITY_LOW, &icon_prerender_task, NULL, NULL );
 948     }
 949
 950     pendingRenders.push(preRenderItem(lsize, name));
 951 }
 952
 953 gboolean icon_prerender_task(gpointer /*data*/) {
 954     if (!pendingRenders.empty()) {
 955         preRenderItem single=pendingRenders.front();
 956         pendingRenders.pop();
 957         int psize = sp_icon_get_phys_size(single._lsize);
 958         prerender_icon(single._name.c_str(), single._lsize, psize);
 959     }
 960
 961     if (!pendingRenders.empty()) {
 962         return TRUE;
 963     } else {
 964         callbackHooked = false;
 965         return FALSE;
 966     }
 967 }
 968
 969 /*
 970   Local Variables:
 971   mode:c++
 972   c-file-style:"stroustrup"
 973   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 974   indent-tabs-mode:nil
 975   fill-column:99
 976   End:
 977 */
 978 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :