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 71
