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gdk: Refactor redirection code

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This will make future patches easier
This commit is contained in:
Benjamin Otte 2010-07-20 02:02:26 +02:00
parent 755bd51757
commit 56e7abb8a4
1 changed files with 12 additions and 10 deletions
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22
gdk/gdkwindow.c
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@ -3027,9 +3027,8 @@ gdk_window_begin_paint_region (GdkWindow *window,
#endif /* USE_BACKING_STORE */
}
static void
static cairo_region_t *
setup_redirect_clip (GdkWindow *window,
GdkGC *gc,
int *x_offset_out,
int *y_offset_out)
{
@ -3062,15 +3061,10 @@ setup_redirect_clip (GdkWindow *window,
x_offset += private->redirect->dest_x;
y_offset += private->redirect->dest_y;
gdk_gc_set_clip_region (gc, visible_region); /* This resets clip origin! */
/* offset clip and tiles from window coords to pixmaps coords */
gdk_gc_offset (gc, -x_offset, -y_offset);
cairo_region_destroy (visible_region);
*x_offset_out = x_offset;
*y_offset_out = y_offset;
return visible_region;
}
/**
@ -3148,15 +3142,23 @@ gdk_window_end_paint (GdkWindow *window)
if (private->redirect)
{
int x_offset, y_offset;
cairo_region_t *region;
/* TODO: Should also use paint->region for clipping */
setup_redirect_clip (window, tmp_gc, &x_offset, &y_offset);
region = setup_redirect_clip (window, &x_offset, &y_offset);
gdk_gc_set_clip_region (tmp_gc, region); /* This resets clip origin! */
/* offset clip and tiles from window coords to pixmaps coords */
gdk_gc_offset (tmp_gc, -x_offset, -y_offset);
gdk_draw_drawable (private->redirect->pixmap, tmp_gc, paint->pixmap,
clip_box.x - paint->x_offset,
clip_box.y - paint->y_offset,
clip_box.x + x_offset,
clip_box.y + y_offset,
clip_box.width, clip_box.height);
cairo_region_destroy (region);
}
/* Reset clip region of the cached GdkGC */