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-rw-r--r--src/widgets/icon.cpp924
1 files changed, 924 insertions, 0 deletions
diff --git a/src/widgets/icon.cpp b/src/widgets/icon.cpp
new file mode 100644
index 000000000..32ebb4c57
--- /dev/null
+++ b/src/widgets/icon.cpp
@@ -0,0 +1,924 @@
+/** \file
+ * SPIcon: Generic icon widget
+ */
+/*
+ * Author:
+ * Lauris Kaplinski <lauris@kaplinski.com>
+ * Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2002 Lauris Kaplinski
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include "path-prefix.h"
+
+
+
+#include <gtk/gtkiconfactory.h>
+#include <gtk/gtkstock.h>
+#include <gtk/gtkimage.h>
+
+#include <gtkmm/image.h>
+
+#include "prefs-utils.h"
+#include "inkscape.h"
+#include "document.h"
+#include "sp-item.h"
+#include "display/nr-arena.h"
+#include "display/nr-arena-item.h"
+#include "io/sys.h"
+
+#include "icon.h"
+
+static gboolean icon_prerender_task(gpointer data);
+
+static void addPreRender( GtkIconSize lsize, gchar const *name );
+
+static void sp_icon_class_init(SPIconClass *klass);
+static void sp_icon_init(SPIcon *icon);
+static void sp_icon_destroy(GtkObject *object);
+
+static void sp_icon_reset(SPIcon *icon);
+static void sp_icon_clear(SPIcon *icon);
+
+static void sp_icon_size_request(GtkWidget *widget, GtkRequisition *requisition);
+static void sp_icon_size_allocate(GtkWidget *widget, GtkAllocation *allocation);
+static int sp_icon_expose(GtkWidget *widget, GdkEventExpose *event);
+
+static void sp_icon_paint(SPIcon *icon, GdkRectangle const *area);
+
+static void sp_icon_screen_changed( GtkWidget *widget, GdkScreen *previous_screen );
+static void sp_icon_style_set( GtkWidget *widget, GtkStyle *previous_style );
+static void sp_icon_theme_changed( SPIcon *icon );
+
+static guchar *sp_icon_image_load_pixmap(gchar const *name, unsigned lsize, unsigned psize);
+static guchar *sp_icon_image_load_svg(gchar const *name, unsigned lsize, unsigned psize);
+
+static guchar *sp_icon_image_load(SPIcon *icon, gchar const *name);
+
+static int sp_icon_get_phys_size(int size);
+
+static void sp_icon_overlay_pixels( guchar *px, int width, int height, int stride,
+ unsigned r, unsigned g, unsigned b );
+
+static GtkWidgetClass *parent_class;
+
+static bool sizeDirty = true;
+
+GtkType
+sp_icon_get_type()
+{
+ static GtkType type = 0;
+ if (!type) {
+ GtkTypeInfo info = {
+ "SPIcon",
+ sizeof(SPIcon),
+ sizeof(SPIconClass),
+ (GtkClassInitFunc) sp_icon_class_init,
+ (GtkObjectInitFunc) sp_icon_init,
+ NULL, NULL, NULL
+ };
+ type = gtk_type_unique(GTK_TYPE_WIDGET, &info);
+ }
+ return type;
+}
+
+static void
+sp_icon_class_init(SPIconClass *klass)
+{
+ GtkObjectClass *object_class;
+ GtkWidgetClass *widget_class;
+
+ object_class = (GtkObjectClass *) klass;
+ widget_class = (GtkWidgetClass *) klass;
+
+ parent_class = (GtkWidgetClass*)g_type_class_peek_parent(klass);
+
+ object_class->destroy = sp_icon_destroy;
+
+ widget_class->size_request = sp_icon_size_request;
+ widget_class->size_allocate = sp_icon_size_allocate;
+ widget_class->expose_event = sp_icon_expose;
+ widget_class->screen_changed = sp_icon_screen_changed;
+ widget_class->style_set = sp_icon_style_set;
+}
+
+
+static void
+sp_icon_init(SPIcon *icon)
+{
+ GTK_WIDGET_FLAGS(icon) |= GTK_NO_WINDOW;
+ icon->lsize = GTK_ICON_SIZE_BUTTON;
+ icon->psize = 0;
+ icon->name = 0;
+ icon->pb = 0;
+ icon->pb_faded = 0;
+}
+
+static void
+sp_icon_destroy(GtkObject *object)
+{
+ SPIcon *icon = SP_ICON(object);
+ sp_icon_clear(icon);
+ if ( icon->name ) {
+ g_free( icon->name );
+ icon->name = 0;
+ }
+
+ ((GtkObjectClass *) (parent_class))->destroy(object);
+}
+
+static void sp_icon_reset( SPIcon *icon ) {
+ icon->psize = 0;
+ sp_icon_clear(icon);
+}
+
+static void sp_icon_clear( SPIcon *icon ) {
+ if (icon->pb) {
+ g_object_unref(G_OBJECT(icon->pb));
+ icon->pb = NULL;
+ }
+ if (icon->pb_faded) {
+ g_object_unref(G_OBJECT(icon->pb_faded));
+ icon->pb_faded = NULL;
+ }
+}
+
+static void
+sp_icon_size_request(GtkWidget *widget, GtkRequisition *requisition)
+{
+ SPIcon const *icon = SP_ICON(widget);
+
+ int const size = ( icon->psize
+ ? icon->psize
+ : sp_icon_get_phys_size(icon->lsize) );
+ requisition->width = size;
+ requisition->height = size;
+}
+
+static void
+sp_icon_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
+{
+ widget->allocation = *allocation;
+
+ if (GTK_WIDGET_DRAWABLE(widget)) {
+ gtk_widget_queue_draw(widget);
+ }
+}
+
+static int sp_icon_expose(GtkWidget *widget, GdkEventExpose *event)
+{
+ if ( GTK_WIDGET_DRAWABLE(widget) ) {
+ SPIcon *icon = SP_ICON(widget);
+ if ( !icon->pb ) {
+ guchar *pixels = 0;
+
+ icon->psize = sp_icon_get_phys_size(icon->lsize);
+
+ pixels = sp_icon_image_load( icon, icon->name );
+
+ if (pixels) {
+ // don't pass the nr_free because we're caching the pixel
+ // space loaded through ...
+ // I just changed this. make sure sp_icon_image_load still does the right thing.
+ icon->pb = gdk_pixbuf_new_from_data(pixels, GDK_COLORSPACE_RGB, TRUE, 8,
+ icon->psize, icon->psize, icon->psize * 4,
+ /*(GdkPixbufDestroyNotify)nr_free*/NULL, NULL);
+ icon->pb_faded = gdk_pixbuf_copy(icon->pb);
+
+ pixels = gdk_pixbuf_get_pixels(icon->pb_faded);
+ size_t stride = gdk_pixbuf_get_rowstride(icon->pb_faded);
+ pixels += 3; // alpha
+ for ( int row = 0 ; row < icon->psize ; row++ ) {
+ guchar *row_pixels = pixels;
+ for ( int column = 0 ; column < icon->psize ; column++ ) {
+ *row_pixels = *row_pixels >> 1;
+ row_pixels += 4;
+ }
+ pixels += stride;
+ }
+ } else {
+ /* TODO: We should do something more useful if we can't load the image. */
+ g_warning ("failed to load icon '%s'", icon->name);
+ }
+ }
+
+ sp_icon_paint(SP_ICON(widget), &event->area);
+ }
+
+ return TRUE;
+}
+
+
+static void sp_icon_screen_changed( GtkWidget *widget, GdkScreen *previous_screen )
+{
+ if ( GTK_WIDGET_CLASS( parent_class )->screen_changed ) {
+ GTK_WIDGET_CLASS( parent_class )->screen_changed( widget, previous_screen );
+ }
+ SPIcon *icon = SP_ICON(widget);
+ sp_icon_theme_changed(icon);
+}
+
+static void sp_icon_style_set( GtkWidget *widget, GtkStyle *previous_style )
+{
+ if ( GTK_WIDGET_CLASS( parent_class )->style_set ) {
+ GTK_WIDGET_CLASS( parent_class )->style_set( widget, previous_style );
+ }
+ SPIcon *icon = SP_ICON(widget);
+ sp_icon_theme_changed(icon);
+}
+
+static void sp_icon_theme_changed( SPIcon *icon )
+{
+ //g_message("Got a change bump for this icon");
+ sizeDirty = true;
+ sp_icon_reset(icon);
+ gtk_widget_queue_draw( GTK_WIDGET(icon) );
+}
+
+
+static GtkWidget *
+sp_icon_new_full( GtkIconSize lsize, gchar const *name )
+{
+ static gint dump = prefs_get_int_attribute_limited( "debug.icons", "dumpGtk", 0, 0, 1 );
+ static gint fallback = prefs_get_int_attribute_limited( "debug.icons", "checkNames", 0, 0, 1 );
+
+ addPreRender( lsize, name );
+
+ GtkStockItem stock;
+ gboolean tryLoad = gtk_stock_lookup( name, &stock );
+ if ( !tryLoad && fallback ) {
+ tryLoad |= strncmp("gtk-", name, 4 ) == 0;
+ }
+ if ( !tryLoad && fallback ) {
+ tryLoad |= strncmp("gnome-", name, 6 ) == 0;
+ }
+
+ GtkWidget *widget = 0;
+ if ( tryLoad ) {
+ GtkWidget *img = gtk_image_new_from_stock( name, lsize );
+ if ( img ) {
+ GtkImageType type = gtk_image_get_storage_type( GTK_IMAGE(img) );
+ if ( type == GTK_IMAGE_STOCK ) {
+ widget = GTK_WIDGET(img);
+ img = 0;
+
+ if ( dump ) {
+ g_message( "loaded gtk '%s' %d (GTK_IMAGE_STOCK)", name, lsize );
+ }
+ } else {
+ if ( dump ) {
+ g_message( "skipped gtk '%s' %d (not GTK_IMAGE_STOCK)", name, lsize );
+ }
+ g_object_unref( (GObject *)img );
+ img = 0;
+ }
+ }
+ }
+
+ if ( !widget ) {
+ SPIcon *icon = (SPIcon *)g_object_new(SP_TYPE_ICON, NULL);
+ icon->lsize = lsize;
+ icon->name = g_strdup(name);
+ icon->psize = sp_icon_get_phys_size(lsize);
+
+ widget = GTK_WIDGET(icon);
+ }
+
+ return widget;
+}
+
+GtkWidget *
+sp_icon_new( GtkIconSize lsize, gchar const *name )
+{
+ return sp_icon_new_full( lsize, name );
+}
+
+Gtk::Widget *sp_icon_get_icon( Glib::ustring const &oid, GtkIconSize size )
+{
+ Gtk::Widget *result = 0;
+ GtkWidget *widget = sp_icon_new_full( size, oid.c_str() );
+
+ if ( widget ) {
+ if ( GTK_IS_IMAGE(widget) ) {
+ GtkImage *img = GTK_IMAGE(widget);
+ result = Glib::wrap( img );
+ } else {
+ result = Glib::wrap( widget );
+ }
+ }
+
+ return result;
+}
+
+// Try to load the named svg, falling back to pixmaps
+guchar *
+sp_icon_image_load( SPIcon *icon, gchar const *name )
+{
+ guchar *px = sp_icon_image_load_svg( name, icon->lsize, icon->psize );
+ if (!px) {
+ px = sp_icon_image_load_pixmap(name, icon->lsize, icon->psize);
+ }
+
+ return px;
+}
+
+GtkIconSize
+sp_icon_get_gtk_size(int size)
+{
+ static GtkIconSize map[64] = {(GtkIconSize)0};
+ size = CLAMP(size, 4, 63);
+ if (!map[size]) {
+ static int count = 0;
+ char c[64];
+ g_snprintf(c, 64, "InkscapeIcon%d", count++);
+ map[size] = gtk_icon_size_register(c, size, size);
+ }
+ return map[size];
+}
+
+static int sp_icon_get_phys_size(int size)
+{
+ static bool init = false;
+ static int lastSys[GTK_ICON_SIZE_DIALOG + 1];
+ static int vals[GTK_ICON_SIZE_DIALOG + 1];
+
+ size = CLAMP( size, GTK_ICON_SIZE_MENU, GTK_ICON_SIZE_DIALOG );
+
+ if ( sizeDirty && init ) {
+ GtkIconSize const gtkSizes[] = {
+ GTK_ICON_SIZE_MENU,
+ GTK_ICON_SIZE_SMALL_TOOLBAR,
+ GTK_ICON_SIZE_LARGE_TOOLBAR,
+ GTK_ICON_SIZE_BUTTON,
+ GTK_ICON_SIZE_DND,
+ GTK_ICON_SIZE_DIALOG
+ };
+ for (unsigned i = 0; i < G_N_ELEMENTS(gtkSizes) && init; ++i) {
+ unsigned const val_ix(gtkSizes[i]);
+ g_assert( val_ix < G_N_ELEMENTS(vals) );
+
+ gint width = 0;
+ gint height = 0;
+ if ( gtk_icon_size_lookup(gtkSizes[i], &width, &height ) ) {
+ init &= (lastSys[val_ix] == std::max(width, height));
+ }
+ }
+ }
+
+ if ( !init ) {
+ sizeDirty = false;
+ gint dump = prefs_get_int_attribute_limited( "debug.icons", "dumpDefault", 0, 0, 1 );
+ if ( dump ) {
+ g_message( "Default icon sizes:" );
+ }
+ memset( vals, 0, sizeof(vals) );
+ memset( lastSys, 0, sizeof(lastSys) );
+ GtkIconSize const gtkSizes[] = {
+ GTK_ICON_SIZE_MENU,
+ GTK_ICON_SIZE_SMALL_TOOLBAR,
+ GTK_ICON_SIZE_LARGE_TOOLBAR,
+ GTK_ICON_SIZE_BUTTON,
+ GTK_ICON_SIZE_DND,
+ GTK_ICON_SIZE_DIALOG
+ };
+ gchar const *const names[] = {
+ "GTK_ICON_SIZE_MENU",
+ "GTK_ICON_SIZE_SMALL_TOOLBAR",
+ "GTK_ICON_SIZE_LARGE_TOOLBAR",
+ "GTK_ICON_SIZE_BUTTON",
+ "GTK_ICON_SIZE_DND",
+ "GTK_ICON_SIZE_DIALOG"
+ };
+
+ GtkWidget *icon = (GtkWidget *)g_object_new(SP_TYPE_ICON, NULL);
+
+ for (unsigned i = 0; i < G_N_ELEMENTS(gtkSizes); ++i) {
+ unsigned const val_ix(gtkSizes[i]);
+ g_assert( val_ix < G_N_ELEMENTS(vals) );
+
+ gint width = 0;
+ gint height = 0;
+ bool used = false;
+ if ( gtk_icon_size_lookup(gtkSizes[i], &width, &height ) ) {
+ vals[val_ix] = std::max(width, height);
+ lastSys[val_ix] = vals[val_ix];
+ used = true;
+ }
+ if (dump) {
+ g_message(" =-- %u size:%d %c(%d, %d) '%s'",
+ i, gtkSizes[i],
+ ( used ? ' ' : 'X' ), width, height, names[i]);
+ }
+ gchar const *id = GTK_STOCK_OPEN;
+ GdkPixbuf *pb = gtk_widget_render_icon( icon, id, gtkSizes[i], NULL);
+ if (pb) {
+ width = gdk_pixbuf_get_width(pb);
+ height = gdk_pixbuf_get_height(pb);
+ int newSize = std::max( width, height );
+ // TODO perhaps check a few more stock icons to get a range on sizes.
+ if ( newSize > 0 ) {
+ vals[val_ix] = newSize;
+ }
+ if (dump) {
+ g_message(" %u size:%d (%d, %d)", i, gtkSizes[i], width, height);
+ }
+
+ g_object_unref(G_OBJECT(pb));
+ }
+ }
+ //g_object_unref(icon);
+ init = true;
+ }
+
+ return vals[size];
+}
+
+static void sp_icon_paint(SPIcon *icon, GdkRectangle const *area)
+{
+ GtkWidget &widget = *GTK_WIDGET(icon);
+
+ GdkPixbuf *image = GTK_WIDGET_IS_SENSITIVE(&widget) ? icon->pb : icon->pb_faded;
+
+ if (image) {
+ int const padx = ( ( widget.allocation.width > icon->psize )
+ ? ( widget.allocation.width - icon->psize ) / 2
+ : 0 );
+ int const pady = ( ( widget.allocation.height > icon->psize )
+ ? ( widget.allocation.height - icon->psize ) / 2
+ : 0 );
+
+ int const x0 = std::max(area->x, widget.allocation.x + padx);
+ int const y0 = std::max(area->y, widget.allocation.y + pady);
+ int const x1 = std::min(area->x + area->width, widget.allocation.x + padx + static_cast<int>(icon->psize) );
+ int const y1 = std::min(area->y + area->height, widget.allocation.y + pady + static_cast<int>(icon->psize) );
+
+ gdk_draw_pixbuf(GDK_DRAWABLE(widget.window), NULL, image,
+ x0 - widget.allocation.x - padx,
+ y0 - widget.allocation.y - pady,
+ x0, y0,
+ x1 - x0, y1 - y0,
+ GDK_RGB_DITHER_NORMAL, x0, y0);
+ }
+}
+
+static guchar *
+sp_icon_image_load_pixmap(gchar const *name, unsigned lsize, unsigned psize)
+{
+ gchar *path;
+ guchar *px;
+ GdkPixbuf *pb;
+
+ path = (gchar *) g_strdup_printf("%s/%s.png", INKSCAPE_PIXMAPDIR, name);
+ // TODO: bulia, please look over
+ gsize bytesRead = 0;
+ gsize bytesWritten = 0;
+ GError *error = NULL;
+ gchar *localFilename = g_filename_from_utf8( path,
+ -1,
+ &bytesRead,
+ &bytesWritten,
+ &error);
+ pb = gdk_pixbuf_new_from_file(localFilename, NULL);
+ g_free(localFilename);
+ g_free(path);
+ if (!pb) {
+ path = (gchar *) g_strdup_printf("%s/%s.xpm", INKSCAPE_PIXMAPDIR, name);
+ // TODO: bulia, please look over
+ gsize bytesRead = 0;
+ gsize bytesWritten = 0;
+ GError *error = NULL;
+ gchar *localFilename = g_filename_from_utf8( path,
+ -1,
+ &bytesRead,
+ &bytesWritten,
+ &error);
+ pb = gdk_pixbuf_new_from_file(localFilename, NULL);
+ g_free(localFilename);
+ g_free(path);
+ }
+ if (pb) {
+ if (!gdk_pixbuf_get_has_alpha(pb))
+ gdk_pixbuf_add_alpha(pb, FALSE, 0, 0, 0);
+ if ( ( static_cast<unsigned>(gdk_pixbuf_get_width(pb)) != psize )
+ || ( static_cast<unsigned>(gdk_pixbuf_get_height(pb)) != psize ) ) {
+ GdkPixbuf *spb = gdk_pixbuf_scale_simple(pb, psize, psize, GDK_INTERP_HYPER);
+ g_object_unref(G_OBJECT(pb));
+ pb = spb;
+ }
+ guchar *spx = gdk_pixbuf_get_pixels(pb);
+ int srs = gdk_pixbuf_get_rowstride(pb);
+ px = nr_new(guchar, 4 * psize * psize);
+ for (unsigned y = 0; y < psize; y++) {
+ memcpy(px + 4 * y * psize, spx + y * srs, 4 * psize);
+ }
+ g_object_unref(G_OBJECT(pb));
+
+ return px;
+ }
+
+ return NULL;
+}
+
+// takes doc, root, icon, and icon name to produce pixels
+extern "C" guchar *
+sp_icon_doc_icon( SPDocument *doc, NRArenaItem *root,
+ gchar const *name, unsigned psize )
+{
+ gint const dump = prefs_get_int_attribute_limited( "debug.icons", "dumpSvg", 0, 0, 1 );
+ guchar *px = NULL;
+
+ if (doc) {
+ SPObject *object = doc->getObjectById(name);
+ if (object && SP_IS_ITEM(object)) {
+ /* Find bbox in document */
+ NR::Matrix const i2doc(sp_item_i2doc_affine(SP_ITEM(object)));
+ NR::Rect dbox = SP_ITEM(object)->invokeBbox(i2doc);
+
+ if ( SP_OBJECT_PARENT(object) == NULL )
+ {
+ dbox = NR::Rect(NR::Point(0, 0),
+ NR::Point(sp_document_width(doc), sp_document_height(doc)));
+ }
+
+ /* This is in document coordinates, i.e. pixels */
+ if (dbox.isEmpty() == false) {
+ NRGC gc(NULL);
+ /* Update to renderable state */
+ double sf = 1.0;
+ NRMatrix t;
+ nr_matrix_set_scale(&t, sf, sf);
+ nr_arena_item_set_transform(root, &t);
+ nr_matrix_set_identity(&gc.transform);
+ nr_arena_item_invoke_update( root, NULL, &gc,
+ NR_ARENA_ITEM_STATE_ALL,
+ NR_ARENA_ITEM_STATE_NONE );
+ /* Item integer bbox in points */
+ NRRectL ibox;
+ ibox.x0 = (int) floor(sf * dbox.min()[NR::X] + 0.5);
+ ibox.y0 = (int) floor(sf * dbox.min()[NR::Y] + 0.5);
+ ibox.x1 = (int) floor(sf * dbox.max()[NR::X] + 0.5);
+ ibox.y1 = (int) floor(sf * dbox.max()[NR::Y] + 0.5);
+
+ if ( dump ) {
+ g_message( " box --'%s' (%f,%f)-(%f,%f)", name, (double)ibox.x0, (double)ibox.y0, (double)ibox.x1, (double)ibox.y1 );
+ }
+
+ /* Find button visible area */
+ int width = ibox.x1 - ibox.x0;
+ int height = ibox.y1 - ibox.y0;
+
+ if ( dump ) {
+ g_message( " vis --'%s' (%d,%d)", name, width, height );
+ }
+
+ {
+ int block = std::max(width, height);
+ if (block != static_cast<int>(psize) ) {
+ if ( dump ) {
+ g_message(" resizing" );
+ }
+ sf = (double)psize / (double)block;
+
+ nr_matrix_set_scale(&t, sf, sf);
+ nr_arena_item_set_transform(root, &t);
+ nr_matrix_set_identity(&gc.transform);
+ nr_arena_item_invoke_update( root, NULL, &gc,
+ NR_ARENA_ITEM_STATE_ALL,
+ NR_ARENA_ITEM_STATE_NONE );
+ /* Item integer bbox in points */
+ ibox.x0 = (int) floor(sf * dbox.min()[NR::X] + 0.5);
+ ibox.y0 = (int) floor(sf * dbox.min()[NR::Y] + 0.5);
+ ibox.x1 = (int) floor(sf * dbox.max()[NR::X] + 0.5);
+ ibox.y1 = (int) floor(sf * dbox.max()[NR::Y] + 0.5);
+
+ if ( dump ) {
+ g_message( " box2 --'%s' (%f,%f)-(%f,%f)", name, (double)ibox.x0, (double)ibox.y0, (double)ibox.x1, (double)ibox.y1 );
+ }
+
+ /* Find button visible area */
+ width = ibox.x1 - ibox.x0;
+ height = ibox.y1 - ibox.y0;
+ if ( dump ) {
+ g_message( " vis2 --'%s' (%d,%d)", name, width, height );
+ }
+ }
+ }
+
+ int dx, dy;
+ //dx = (psize - width) / 2;
+ //dy = (psize - height) / 2;
+ dx=dy=psize;
+ dx=(dx-width)/2; // watch out for psize, since 'unsigned'-'signed' can cause problems if the result is negative
+ dy=(dy-height)/2;
+ NRRectL area;
+ area.x0 = ibox.x0 - dx;
+ area.y0 = ibox.y0 - dy;
+ area.x1 = area.x0 + psize;
+ area.y1 = area.y0 + psize;
+ /* Actual renderable area */
+ NRRectL ua;
+ ua.x0 = MAX(ibox.x0, area.x0);
+ ua.y0 = MAX(ibox.y0, area.y0);
+ ua.x1 = MIN(ibox.x1, area.x1);
+ ua.y1 = MIN(ibox.y1, area.y1);
+
+ if ( dump ) {
+ g_message( " area --'%s' (%f,%f)-(%f,%f)", name, (double)area.x0, (double)area.y0, (double)area.x1, (double)area.y1 );
+ g_message( " ua --'%s' (%f,%f)-(%f,%f)", name, (double)ua.x0, (double)ua.y0, (double)ua.x1, (double)ua.y1 );
+ }
+ /* Set up pixblock */
+ px = nr_new(guchar, 4 * psize * psize);
+ memset(px, 0x00, 4 * psize * psize);
+ /* Render */
+ NRPixBlock B;
+ nr_pixblock_setup_extern( &B, NR_PIXBLOCK_MODE_R8G8B8A8N,
+ ua.x0, ua.y0, ua.x1, ua.y1,
+ px + 4 * psize * (ua.y0 - area.y0) +
+ 4 * (ua.x0 - area.x0),
+ 4 * psize, FALSE, FALSE );
+ nr_arena_item_invoke_render( root, &ua, &B,
+ NR_ARENA_ITEM_RENDER_NO_CACHE );
+ nr_pixblock_release(&B);
+
+ gint useOverlay = prefs_get_int_attribute_limited( "debug.icons", "overlaySvg", 0, 0, 1 );
+ if ( useOverlay ) {
+ sp_icon_overlay_pixels( px, psize, psize, 4 * psize, 0x00, 0x00, 0xff );
+ }
+ }
+ }
+ }
+
+ return px;
+} // end of sp_icon_doc_icon()
+
+
+
+struct svg_doc_cache_t
+{
+ SPDocument *doc;
+ NRArenaItem *root;
+};
+
+static std::map<Glib::ustring, svg_doc_cache_t *> doc_cache;
+static std::map<Glib::ustring, guchar *> px_cache;
+
+static Glib::ustring icon_cache_key(gchar const *name,
+ unsigned lsize, unsigned psize)
+{
+ Glib::ustring key=name;
+ key += ":";
+ key += lsize;
+ key += ":";
+ key += psize;
+ return key;
+}
+
+static guchar *get_cached_pixels(Glib::ustring const &key) {
+ std::map<Glib::ustring, guchar *>::iterator found=px_cache.find(key);
+ if ( found != px_cache.end() ) {
+ return found->second;
+ }
+ return NULL;
+}
+
+static guchar *load_svg_pixels(gchar const *name,
+ unsigned lsize, unsigned psize)
+{
+ SPDocument *doc = NULL;
+ NRArenaItem *root = NULL;
+ svg_doc_cache_t *info = NULL;
+
+ // Fall back from user prefs dir into system locations.
+ Glib::ustring iconsvg = name;
+ iconsvg += ".svg";
+ std::list<gchar *> sources;
+ sources.push_back(g_build_filename(profile_path("icons"),iconsvg.c_str(), NULL));
+ sources.push_back(g_build_filename(profile_path("icons"),"icons.svg", NULL));
+ sources.push_back(g_build_filename(INKSCAPE_PIXMAPDIR, iconsvg.c_str(), NULL));
+ sources.push_back(g_build_filename(INKSCAPE_PIXMAPDIR, "icons.svg", NULL));
+
+ // Try each document in turn until we successfully load the icon from one
+ guchar *px=NULL;
+ while ( !sources.empty() && !px ) {
+ gchar *doc_filename = sources.front();
+
+ // Did we already load this doc?
+ Glib::ustring key(doc_filename);
+ info = 0;
+ {
+ std::map<Glib::ustring, svg_doc_cache_t *>::iterator i = doc_cache.find(key);
+ if ( i != doc_cache.end() ) {
+ info = i->second;
+ }
+ }
+
+ /* Try to load from document. */
+ if (!info &&
+ Inkscape::IO::file_test( doc_filename, G_FILE_TEST_IS_REGULAR ) &&
+ (doc = sp_document_new( doc_filename, FALSE )) ) {
+
+ // prep the document
+ sp_document_ensure_up_to_date(doc);
+ /* Create new arena */
+ NRArena *arena = NRArena::create();
+ /* Create ArenaItem and set transform */
+ unsigned visionkey = sp_item_display_key_new(1);
+ /* fixme: Memory manage root if needed (Lauris) */
+ root = sp_item_invoke_show( SP_ITEM(SP_DOCUMENT_ROOT(doc)),
+ arena, visionkey, SP_ITEM_SHOW_DISPLAY );
+
+ // store into the cache
+ info = new svg_doc_cache_t;
+ g_assert(info);
+
+ info->doc=doc;
+ info->root=root;
+ doc_cache[key]=info;
+ }
+ if (info) {
+ doc=info->doc;
+ root=info->root;
+ }
+
+ // toss the filename
+ g_free(doc_filename);
+ sources.pop_front();
+
+ // move on to the next document if we couldn't get anything
+ if (!info && !doc) continue;
+
+ px = sp_icon_doc_icon( doc, root, name, psize );
+ }
+
+ return px;
+}
+
+// returns true if icon needed preloading, false if nothing was done
+static bool prerender_icon(gchar const *name, unsigned lsize, unsigned psize)
+{
+ Glib::ustring key=icon_cache_key(name, lsize, psize);
+ guchar *px=get_cached_pixels(key);
+ if (px) {
+ return false;
+ } else {
+ px = load_svg_pixels(name, lsize, psize);
+ if (px) {
+ px_cache[key] = px;
+ }
+ return true;
+ }
+}
+
+static guchar *
+sp_icon_image_load_svg(gchar const *name, unsigned lsize, unsigned psize)
+{
+ Glib::ustring key=icon_cache_key(name, lsize, psize);
+
+ // did we already load this icon at this scale/size?
+ guchar *px=get_cached_pixels(key);
+ if (!px) {
+ px = load_svg_pixels(name, lsize, psize);
+ if (px) {
+ px_cache[key] = px;
+ }
+ }
+ return px;
+}
+
+void sp_icon_overlay_pixels(guchar *px, int width, int height, int stride,
+ unsigned r, unsigned g, unsigned b)
+{
+ for ( int y = 0; y < height; y += 4 ) {
+ guchar *ptr = px + y * stride;
+ for ( int x = 0; x < width; x += 4 ) {
+ *(ptr++) = r;
+ *(ptr++) = g;
+ *(ptr++) = b;
+ *(ptr++) = 0xff;
+
+ ptr += 4 * 3;
+ }
+ }
+
+ if ( width > 1 && height > 1 ) {
+ // point at the last pixel
+ guchar *ptr = px + ((height-1) * stride) + ((width - 1) * 4);
+
+ if ( width > 2 ) {
+ px[4] = r;
+ px[5] = g;
+ px[6] = b;
+ px[7] = 0xff;
+
+ ptr[-12] = r;
+ ptr[-11] = g;
+ ptr[-10] = b;
+ ptr[-9] = 0xff;
+ }
+
+ ptr[-4] = r;
+ ptr[-3] = g;
+ ptr[-2] = b;
+ ptr[-1] = 0xff;
+
+ px[0 + stride] = r;
+ px[1 + stride] = g;
+ px[2 + stride] = b;
+ px[3 + stride] = 0xff;
+
+ ptr[0 - stride] = r;
+ ptr[1 - stride] = g;
+ ptr[2 - stride] = b;
+ ptr[3 - stride] = 0xff;
+
+ if ( height > 2 ) {
+ ptr[0 - stride * 3] = r;
+ ptr[1 - stride * 3] = g;
+ ptr[2 - stride * 3] = b;
+ ptr[3 - stride * 3] = 0xff;
+ }
+ }
+}
+
+class preRenderItem
+{
+public:
+ preRenderItem( GtkIconSize lsize, gchar const *name ) :
+ _lsize( lsize ),
+ _name( name )
+ {}
+ GtkIconSize _lsize;
+ Glib::ustring _name;
+};
+
+
+#include <queue>
+
+static std::queue<preRenderItem> pendingRenders;
+static bool callbackHooked = false;
+static Glib::Timer *prerender_timer=NULL;
+
+static void addPreRender( GtkIconSize lsize, gchar const *name )
+{
+
+ if ( !callbackHooked )
+ {
+ g_message("Beginning icon prerendering");
+ prerender_timer = new Glib::Timer();
+ callbackHooked = true;
+ g_idle_add_full( G_PRIORITY_LOW, &icon_prerender_task, NULL, NULL );
+ }
+
+ pendingRenders.push(preRenderItem(lsize, name));
+}
+
+// in seconds; 10msec is roughly the threshold for human-perceptible lag,
+// but up to 60-70msec is tolerable
+#define INTERACTIVE_LIMIT 0.07
+
+static inline int seconds_to_msec(double seconds) {
+ return (int)(seconds * 1000 + 0.5);
+}
+
+gboolean icon_prerender_task(gpointer data) {
+ Glib::Timer timer;
+
+ if (!pendingRenders.empty()) {
+ preRenderItem single=pendingRenders.front();
+ pendingRenders.pop();
+ int psize = sp_icon_get_phys_size(single._lsize);
+ prerender_icon(single._name.c_str(), single._lsize, psize);
+
+ double elapsed=timer.elapsed();
+ if ( elapsed > INTERACTIVE_LIMIT ) {
+ g_warning("Prerendering of icon \"%s\" at %dx%d pixels exceeded %dmsec (%dmsec)", single._name.c_str(), psize, psize, seconds_to_msec(INTERACTIVE_LIMIT), seconds_to_msec(elapsed));
+ }
+ }
+
+ if (!pendingRenders.empty()) {
+ return TRUE;
+ } else {
+ prerender_timer->stop();
+ g_message("Icon prerendering complete after %g seconds", prerender_timer->elapsed());
+ delete prerender_timer;
+ prerender_timer = NULL;
+ callbackHooked = false;
+ return FALSE;
+ }
+}
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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