1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "ui/gfx/path.h"
6
7 #include <gdk/gdk.h>
8
9 #include "base/command_line.h"
10 #include "base/memory/scoped_ptr.h"
11
12 namespace gfx {
13
CreateNativeRegion() const14 GdkRegion* Path::CreateNativeRegion() const {
15 int point_count = getPoints(NULL, 0);
16 if (point_count <= 1) {
17 // NOTE: ideally this would return gdk_empty_region, but that returns a
18 // region with nothing in it.
19 return NULL;
20 }
21
22 scoped_ptr<SkPoint[]> points(new SkPoint[point_count]);
23 getPoints(points.get(), point_count);
24
25 scoped_ptr<GdkPoint[]> gdk_points(new GdkPoint[point_count]);
26 for (int i = 0; i < point_count; ++i) {
27 gdk_points[i].x = SkScalarRound(points[i].fX);
28 gdk_points[i].y = SkScalarRound(points[i].fY);
29 }
30
31 return gdk_region_polygon(gdk_points.get(), point_count, GDK_EVEN_ODD_RULE);
32 }
33
34 // static
IntersectRegions(NativeRegion r1,NativeRegion r2)35 NativeRegion Path::IntersectRegions(NativeRegion r1, NativeRegion r2) {
36 GdkRegion* copy = gdk_region_copy(r1);
37 gdk_region_intersect(copy, r2);
38 return copy;
39 }
40
41 // static
CombineRegions(NativeRegion r1,NativeRegion r2)42 NativeRegion Path::CombineRegions(NativeRegion r1, NativeRegion r2) {
43 GdkRegion* copy = gdk_region_copy(r1);
44 gdk_region_union(copy, r2);
45 return copy;
46 }
47
48 // static
SubtractRegion(NativeRegion r1,NativeRegion r2)49 NativeRegion Path::SubtractRegion(NativeRegion r1, NativeRegion r2) {
50 GdkRegion* copy = gdk_region_copy(r1);
51 gdk_region_subtract(copy, r2);
52 return copy;
53 }
54
55 } // namespace gfx
56