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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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