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app: keep the draw tool's items around in a GimpCanvasGroup 

which reduces the number of invalidations on the canvas to one.
This commit is contained in:
Michael Natterer 2010-09-25 17:20:08 +02:00
parent e074d4d151
commit df44ced093
2 changed files with 26 additions and 31 deletions
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47
app/tools/gimpdrawtool.c
View File

@ -36,6 +36,7 @@
#include "display/gimpcanvasarc.h"
#include "display/gimpcanvasboundary.h"
#include "display/gimpcanvascorner.h"
#include "display/gimpcanvasgroup.h"
#include "display/gimpcanvasguide.h"
#include "display/gimpcanvashandle.h"
#include "display/gimpcanvasline.h"
@ -106,7 +107,7 @@ gimp_draw_tool_init (GimpDrawTool *draw_tool)
{
draw_tool->display = NULL;
draw_tool->paused_count = 0;
draw_tool->items = NULL;
draw_tool->item = NULL;
}
static void
@ -172,37 +173,40 @@ static void
gimp_draw_tool_add_item (GimpDrawTool *draw_tool,
GimpCanvasItem *item)
{
draw_tool->items = g_list_append (draw_tool->items, g_object_ref (item));
if (! draw_tool->item)
draw_tool->item = gimp_canvas_group_new ();
gimp_canvas_group_add_item (GIMP_CANVAS_GROUP (draw_tool->item), item);
}
static void
gimp_draw_tool_clear_items (GimpDrawTool *draw_tool)
{
if (draw_tool->items)
if (draw_tool->item)
{
g_list_foreach (draw_tool->items, (GFunc) g_object_unref, NULL);
g_list_free (draw_tool->items);
draw_tool->items = NULL;
g_object_unref (draw_tool->item);
draw_tool->item = NULL;
}
}
static void
gimp_draw_tool_invalidate_items (GimpDrawTool *draw_tool)
{
if (draw_tool->item)
{
GimpDisplayShell *shell = gimp_display_get_shell (draw_tool->display);
GdkWindow *window = gtk_widget_get_window (shell->canvas);
GList *list;
for (list = draw_tool->items; list; list = g_list_next (list))
{
GimpCanvasItem *item = list->data;
GdkRegion *region;
region = gimp_canvas_item_get_extents (item, shell);
region = gimp_canvas_item_get_extents (draw_tool->item, shell);
if (region)
{
gdk_window_invalidate_region (window, region, TRUE);
gdk_region_destroy (region);
}
}
}
static void
gimp_draw_tool_draw (GimpDrawTool *draw_tool)
@ -289,25 +293,16 @@ void
gimp_draw_tool_draw_items (GimpDrawTool *draw_tool,
cairo_t *cr)
{
GimpDisplayShell *shell;
GdkWindow *window;
GList *list;
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
g_return_if_fail (cr != NULL);
if (! gimp_draw_tool_is_active (draw_tool) ||
draw_tool->paused_count > 0)
return;
shell = gimp_display_get_shell (draw_tool->display);
window = gtk_widget_get_window (shell->canvas);
for (list = draw_tool->items; list; list = g_list_next (list))
if (draw_tool->item &&
gimp_draw_tool_is_active (draw_tool) &&
draw_tool->paused_count == 0)
{
GimpCanvasItem *item = list->data;
GimpDisplayShell *shell = gimp_display_get_shell (draw_tool->display);
gimp_canvas_item_draw (item, shell, cr);
gimp_canvas_item_draw (draw_tool->item, shell, cr);
}
}

2
app/tools/gimpdrawtool.h
View File

@ -42,7 +42,7 @@ struct _GimpDrawTool
gint paused_count; /* count to keep track of multiple pauses */
GList *items;
GimpCanvasItem *item;
};
struct _GimpDrawToolClass