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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_win.h" | |
6 | |
7 #include "base/memory/scoped_ptr.h" | |
8 #include "base/win/scoped_gdi_object.h" | |
9 #include "third_party/skia/include/core/SkRegion.h" | |
10 #include "ui/gfx/path.h" | |
11 | |
12 namespace gfx { | |
13 | |
14 HRGN CreateHRGNFromSkRegion(const SkRegion& region) { | |
15 base::win::ScopedRegion temp(::CreateRectRgn(0, 0, 0, 0)); | |
16 base::win::ScopedRegion result(::CreateRectRgn(0, 0, 0, 0)); | |
17 | |
18 for (SkRegion::Iterator i(region); !i.done(); i.next()) { | |
19 const SkIRect& rect = i.rect(); | |
20 ::SetRectRgn(temp, rect.left(), rect.top(), rect.right(), rect.bottom()); | |
21 ::CombineRgn(result, result, temp, RGN_OR); | |
22 } | |
23 | |
24 return result.release(); | |
25 } | |
26 | |
27 HRGN CreateHRGNFromSkPath(const SkPath& path) { | |
28 int point_count = path.getPoints(NULL, 0); | |
29 scoped_ptr<SkPoint[]> points(new SkPoint[point_count]); | |
30 path.getPoints(points.get(), point_count); | |
31 scoped_ptr<POINT[]> windows_points(new POINT[point_count]); | |
32 for (int i = 0; i < point_count; ++i) { | |
33 windows_points[i].x = SkScalarRoundToInt(points[i].fX); | |
34 windows_points[i].y = SkScalarRoundToInt(points[i].fY); | |
35 } | |
36 | |
37 return ::CreatePolygonRgn(windows_points.get(), point_count, ALTERNATE); | |
38 } | |
39 | |
40 // See path_aura.cc for Aura definition of these methods: | |
41 #if !defined(USE_AURA) | |
42 | |
43 NativeRegion Path::CreateNativeRegion() const { | |
44 return CreateHRGNFromSkPath(*this); | |
45 } | |
46 | |
47 // static | |
48 NativeRegion Path::IntersectRegions(NativeRegion r1, NativeRegion r2) { | |
49 HRGN dest = CreateRectRgn(0, 0, 1, 1); | |
50 CombineRgn(dest, r1, r2, RGN_AND); | |
51 return dest; | |
52 } | |
53 | |
54 // static | |
55 NativeRegion Path::CombineRegions(NativeRegion r1, NativeRegion r2) { | |
56 HRGN dest = CreateRectRgn(0, 0, 1, 1); | |
57 CombineRgn(dest, r1, r2, RGN_OR); | |
58 return dest; | |
59 } | |
60 | |
61 // static | |
62 NativeRegion Path::SubtractRegion(NativeRegion r1, NativeRegion r2) { | |
63 HRGN dest = CreateRectRgn(0, 0, 1, 1); | |
64 CombineRgn(dest, r1, r2, RGN_DIFF); | |
65 return dest; | |
66 } | |
67 | |
68 #endif | |
69 | |
70 } // namespace gfx | |
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