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Track clip_mask in GdkGC. Fix gdk_gc_add_drawable_clip to handle clip masks

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This commit is contained in:
Alexander Larsson 2008-12-04 21:38:19 +01:00 committed by Alexander Larsson
parent 864649157d
commit b647c6e5fd
1 changed files with 82 additions and 13 deletions
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95
gdk/gdkgc.c
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@ -48,12 +48,15 @@ struct _GdkGCPrivate
int region_tag_offset_y;
GdkRegion *old_clip_region;
GdkPixmap *old_clip_mask;
GdkSubwindowMode subwindow_mode;
GdkFill fill;
GdkBitmap *stipple;
GdkPixmap *tile;
GdkPixmap *clip_mask;
guint32 fg_pixel;
guint32 bg_pixel;
@ -158,6 +161,8 @@ _gdk_gc_init (GdkGC *gc,
gc->clip_x_origin = values->clip_x_origin;
if (values_mask & GDK_GC_CLIP_Y_ORIGIN)
gc->clip_y_origin = values->clip_y_origin;
if ((values_mask & GDK_GC_CLIP_MASK) && values->clip_mask)
priv->clip_mask = g_object_ref (values->clip_mask);
if (values_mask & GDK_GC_TS_X_ORIGIN)
gc->ts_x_origin = values->ts_x_origin;
if (values_mask & GDK_GC_TS_Y_ORIGIN)
@ -198,6 +203,10 @@ gdk_gc_finalize (GObject *object)
gdk_region_destroy (priv->clip_region);
if (priv->old_clip_region)
gdk_region_destroy (priv->old_clip_region);
if (priv->clip_mask)
g_object_unref (priv->clip_mask);
if (priv->old_clip_mask)
g_object_unref (priv->old_clip_mask);
if (gc->colormap)
g_object_unref (gc->colormap);
if (priv->tile)
@ -297,6 +306,14 @@ gdk_gc_set_values (GdkGC *gc,
gc->ts_y_origin = values->ts_y_origin;
if (values_mask & GDK_GC_CLIP_MASK)
{
if (priv->clip_mask)
{
g_object_unref (priv->clip_mask);
priv->clip_mask = NULL;
}
if (values->clip_mask)
priv->clip_mask = g_object_ref (values->clip_mask);
if (priv->clip_region)
{
gdk_region_destroy (priv->clip_region);
@ -570,6 +587,12 @@ _gdk_gc_set_clip_region_real (GdkGC *gc,
{
GdkGCPrivate *priv = GDK_GC_GET_PRIVATE (gc);
if (priv->clip_mask)
{
g_object_unref (priv->clip_mask);
priv->clip_mask = NULL;
}
if (priv->clip_region)
gdk_region_destroy (priv->clip_region);
@ -607,21 +630,48 @@ _gdk_gc_add_drawable_clip (GdkGC *gc,
if (priv->region_tag_applied)
_gdk_gc_remove_drawable_clip (gc);
priv->region_tag_applied = region_tag;
priv->region_tag_offset_x = offset_x;
priv->region_tag_offset_y = offset_y;
priv->old_clip_region = priv->clip_region;
region = gdk_region_copy (region);
if (offset_x != 0 || offset_y != 0)
gdk_region_offset (region, offset_x, offset_y);
priv->clip_region = region;
if (priv->old_clip_region)
gdk_region_intersect (region, priv->old_clip_region);
_gdk_windowing_gc_set_clip_region (gc, priv->clip_region, FALSE);
if (priv->clip_mask)
{
int w, h;
GdkPixmap *new_mask;
GdkGC *tmp_gc;
GdkColor black = {0, 0, 0, 0};
priv->old_clip_mask = g_object_ref (priv->clip_mask);
gdk_drawable_get_size (priv->old_clip_mask, &w, &h);
new_mask = gdk_pixmap_new (priv->old_clip_mask, w, h, -1);
tmp_gc = _gdk_drawable_get_scratch_gc ((GdkDrawable *)new_mask, FALSE);
gdk_gc_set_foreground (tmp_gc, &black);
gdk_draw_rectangle (new_mask, tmp_gc, TRUE, 0, 0, -1, -1);
_gdk_gc_set_clip_region_internal (tmp_gc, region, TRUE); /* Takes ownership of region */
gdk_draw_drawable (new_mask,
tmp_gc,
priv->old_clip_mask,
0, 0,
0, 0,
-1, -1);
gdk_gc_set_clip_region (tmp_gc, NULL);
gdk_gc_set_clip_mask (gc, new_mask);
}
else
{
priv->old_clip_region = priv->clip_region;
priv->clip_region = region;
if (priv->old_clip_region)
gdk_region_intersect (region, priv->old_clip_region);
_gdk_windowing_gc_set_clip_region (gc, priv->clip_region, FALSE);
}
priv->region_tag_applied = region_tag;
priv->region_tag_offset_x = offset_x;
priv->region_tag_offset_y = offset_y;
}
void
@ -631,9 +681,18 @@ _gdk_gc_remove_drawable_clip (GdkGC *gc)
if (priv->region_tag_applied)
{
_gdk_gc_set_clip_region_real (gc, priv->old_clip_region, FALSE);
priv->old_clip_region = NULL;
priv->region_tag_applied = 0;
if (priv->old_clip_mask)
{
gdk_gc_set_clip_mask (gc, priv->old_clip_mask);
g_object_unref (priv->old_clip_mask);
priv->old_clip_mask = NULL;
}
else
{
_gdk_gc_set_clip_region_real (gc, priv->old_clip_region, FALSE);
priv->old_clip_region = NULL;
}
}
}
@ -999,6 +1058,16 @@ gdk_gc_copy (GdkGC *dst_gc,
dst_priv->old_clip_region = gdk_region_copy (src_priv->old_clip_region);
else
dst_priv->old_clip_region = NULL;
if (src_priv->clip_mask)
dst_priv->clip_mask = g_object_ref (src_priv->clip_mask);
else
dst_priv->clip_mask = NULL;
if (src_priv->old_clip_mask)
dst_priv->old_clip_mask = g_object_ref (src_priv->old_clip_mask);
else
dst_priv->old_clip_mask = NULL;
dst_priv->fill = src_priv->fill;