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| 1 // Copyright 2013 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 <algorithm> |
| 8 #include <vector> |
| 9 |
| 10 #include "base/logging.h" |
| 11 #include "base/win/scoped_gdi_object.h" |
| 12 #include "skia/ext/skia_utils_win.h" |
| 13 #include "testing/gtest/include/gtest/gtest.h" |
| 14 #include "third_party/skia/include/core/SkPath.h" |
| 15 #include "third_party/skia/include/core/SkRegion.h" |
| 16 |
| 17 namespace gfx { |
| 18 namespace { |
| 19 |
| 20 std::vector<SkIRect> GetRectsFromHRGN(HRGN region) { |
| 21 // Determine the size of output buffer required to receive the region. |
| 22 DWORD bytes_size = GetRegionData(region, 0, NULL); |
| 23 CHECK(bytes_size != 0); |
| 24 |
| 25 // Fetch the Windows RECTs that comprise the region. |
| 26 std::vector<char> buffer(bytes_size);; |
| 27 LPRGNDATA region_data = reinterpret_cast<LPRGNDATA>(buffer.data()); |
| 28 DWORD result = GetRegionData(region, bytes_size, region_data); |
| 29 CHECK(result == bytes_size); |
| 30 |
| 31 // Pull out the rectangles into a SkIRect vector to pass to setRects(). |
| 32 const LPRECT rects = reinterpret_cast<LPRECT>(®ion_data->Buffer[0]); |
| 33 std::vector<SkIRect> sk_rects(region_data->rdh.nCount); |
| 34 std::transform(rects, rects + region_data->rdh.nCount, |
| 35 sk_rects.begin(), skia::RECTToSkIRect); |
| 36 |
| 37 return sk_rects; |
| 38 } |
| 39 |
| 40 TEST(PathWinTest, BasicSkPathToHRGN) { |
| 41 SkPath path; |
| 42 path.moveTo(0.0f, 0.0f); |
| 43 path.rLineTo(100.0f, 0.0f); |
| 44 path.rLineTo(0.0f, 100.0f); |
| 45 path.rLineTo(-100.0f, 0.0f); |
| 46 path.rLineTo(0.0f, -100.0f); |
| 47 base::win::ScopedRegion region(CreateHRGNFromSkPath(path)); |
| 48 std::vector<SkIRect> result = GetRectsFromHRGN(region); |
| 49 EXPECT_EQ(1U, result.size()); |
| 50 EXPECT_EQ(0, result[0].left()); |
| 51 EXPECT_EQ(0, result[0].top()); |
| 52 EXPECT_EQ(100, result[0].right()); |
| 53 EXPECT_EQ(100, result[0].bottom()); |
| 54 } |
| 55 |
| 56 TEST(PathWinTest, NonContiguousSkPathToHRGN) { |
| 57 SkPath path; |
| 58 path.moveTo(0.0f, 0.0f); |
| 59 path.rLineTo(100.0f, 0.0f); |
| 60 path.rLineTo(0.0f, 100.0f); |
| 61 path.rLineTo(-100.0f, 0.0f); |
| 62 path.rLineTo(0.0f, -100.0f); |
| 63 path.moveTo(150.0f, 0.0f); |
| 64 path.rLineTo(100.0f, 0.0f); |
| 65 path.rLineTo(0.0f, 100.0f); |
| 66 path.rLineTo(-100.0f, 0.0f); |
| 67 path.rLineTo(0.0f, -100.0f); |
| 68 base::win::ScopedRegion region(CreateHRGNFromSkPath(path)); |
| 69 std::vector<SkIRect> result = GetRectsFromHRGN(region); |
| 70 EXPECT_EQ(2U, result.size()); |
| 71 EXPECT_EQ(0, result[0].left()); |
| 72 EXPECT_EQ(0, result[0].top()); |
| 73 EXPECT_EQ(100, result[0].right()); |
| 74 EXPECT_EQ(100, result[0].bottom()); |
| 75 EXPECT_EQ(150, result[1].left()); |
| 76 EXPECT_EQ(0, result[1].top()); |
| 77 EXPECT_EQ(250, result[1].right()); |
| 78 EXPECT_EQ(100, result[1].bottom()); |
| 79 } |
| 80 |
| 81 } // namespace |
| 82 } // namespace gfx |
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