| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "ui/gfx/path_win.h" |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "base/win/scoped_gdi_object.h" |
| #include "third_party/skia/include/core/SkRegion.h" |
| #include "ui/gfx/path.h" |
| |
| namespace gfx { |
| |
| HRGN CreateHRGNFromSkRegion(const SkRegion& region) { |
| base::win::ScopedRegion temp(::CreateRectRgn(0, 0, 0, 0)); |
| base::win::ScopedRegion result(::CreateRectRgn(0, 0, 0, 0)); |
| |
| for (SkRegion::Iterator i(region); !i.done(); i.next()) { |
| const SkIRect& rect = i.rect(); |
| ::SetRectRgn(temp, rect.left(), rect.top(), rect.right(), rect.bottom()); |
| ::CombineRgn(result, result, temp, RGN_OR); |
| } |
| |
| return result.release(); |
| } |
| |
| HRGN CreateHRGNFromSkPath(const SkPath& path) { |
| int point_count = path.getPoints(NULL, 0); |
| scoped_ptr<SkPoint[]> points(new SkPoint[point_count]); |
| path.getPoints(points.get(), point_count); |
| scoped_ptr<POINT[]> windows_points(new POINT[point_count]); |
| for (int i = 0; i < point_count; ++i) { |
| windows_points[i].x = SkScalarRound(points[i].fX); |
| windows_points[i].y = SkScalarRound(points[i].fY); |
| } |
| |
| return ::CreatePolygonRgn(windows_points.get(), point_count, ALTERNATE); |
| } |
| |
| // See path_aura.cc for Aura definition of these methods: |
| #if !defined(USE_AURA) |
| |
| NativeRegion Path::CreateNativeRegion() const { |
| return CreateHRGNFromSkPath(*this); |
| } |
| |
| // static |
| NativeRegion Path::IntersectRegions(NativeRegion r1, NativeRegion r2) { |
| HRGN dest = CreateRectRgn(0, 0, 1, 1); |
| CombineRgn(dest, r1, r2, RGN_AND); |
| return dest; |
| } |
| |
| // static |
| NativeRegion Path::CombineRegions(NativeRegion r1, NativeRegion r2) { |
| HRGN dest = CreateRectRgn(0, 0, 1, 1); |
| CombineRgn(dest, r1, r2, RGN_OR); |
| return dest; |
| } |
| |
| // static |
| NativeRegion Path::SubtractRegion(NativeRegion r1, NativeRegion r2) { |
| HRGN dest = CreateRectRgn(0, 0, 1, 1); |
| CombineRgn(dest, r1, r2, RGN_DIFF); |
| return dest; |
| } |
| |
| #endif |
| |
| } // namespace gfx |