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| 1 // Copyright (c) 2006-2008 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 "gfx/path.h" | |
| 6 | |
| 7 #include "base/scoped_ptr.h" | |
| 8 | |
| 9 namespace gfx { | |
| 10 | |
| 11 HRGN Path::CreateNativeRegion() const { | |
| 12 int point_count = getPoints(NULL, 0); | |
| 13 scoped_array<SkPoint> points(new SkPoint[point_count]); | |
| 14 getPoints(points.get(), point_count); | |
| 15 scoped_array<POINT> windows_points(new POINT[point_count]); | |
| 16 for (int i = 0; i < point_count; ++i) { | |
| 17 windows_points[i].x = SkScalarRound(points[i].fX); | |
| 18 windows_points[i].y = SkScalarRound(points[i].fY); | |
| 19 } | |
| 20 | |
| 21 return ::CreatePolygonRgn(windows_points.get(), point_count, ALTERNATE); | |
| 22 } | |
| 23 | |
| 24 // static | |
| 25 NativeRegion Path::IntersectRegions(NativeRegion r1, NativeRegion r2) { | |
| 26 HRGN dest = CreateRectRgn(0, 0, 1, 1); | |
| 27 CombineRgn(dest, r1, r2, RGN_AND); | |
| 28 return dest; | |
| 29 } | |
| 30 | |
| 31 // static | |
| 32 NativeRegion Path::CombineRegions(NativeRegion r1, NativeRegion r2) { | |
| 33 HRGN dest = CreateRectRgn(0, 0, 1, 1); | |
| 34 CombineRgn(dest, r1, r2, RGN_OR); | |
| 35 return dest; | |
| 36 } | |
| 37 | |
| 38 // static | |
| 39 NativeRegion Path::SubtractRegion(NativeRegion r1, NativeRegion r2) { | |
| 40 HRGN dest = CreateRectRgn(0, 0, 1, 1); | |
| 41 CombineRgn(dest, r1, r2, RGN_DIFF); | |
| 42 return dest; | |
| 43 } | |
| 44 | |
| 45 } // namespace gfx | |
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