ui/gfx/paint_vector_icon_unittest.cc

// Copyright 2017 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/paint_vector_icon.h"

#include <gtest/gtest.h>
#include <vector>

#include "cc/paint/paint_record.h"
#include "cc/paint/paint_recorder.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkPath.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/vector_icon_types.h"

namespace gfx {

namespace {

class MockCanvas : public SkCanvas {
 public:
  MockCanvas(int width, int height) : SkCanvas(width, height) {}

  // SkCanvas overrides:
  void onDrawPath(const SkPath& path, const SkPaint& paint) override {
    paths_.push_back(path);
  }

  const std::vector<SkPath>& paths() const { return paths_; }

 private:
  std::vector<SkPath> paths_;

  DISALLOW_COPY_AND_ASSIGN(MockCanvas);
};

// Tests that a relative move to command (R_MOVE_TO) after a close command
// (CLOSE) uses the correct starting point. See crbug.com/697497
TEST(VectorIconTest, RelativeMoveToAfterClose) {
  cc::PaintRecorder recorder;
  Canvas canvas(recorder.beginRecording(100, 100), 1.0f);

  const PathElement elements[] = {
      MOVE_TO, 4, 5,
      LINE_TO, 10, 11,
      CLOSE,
      // This move should use (4, 5) as the start point rather than (10, 11).
      R_MOVE_TO, 20, 21,
      R_LINE_TO, 50, 51,
      END,
  };
  const VectorIcon icon = {elements, nullptr};

  PaintVectorIcon(&canvas, icon, 100, SK_ColorMAGENTA);
  sk_sp<cc::PaintRecord> record = recorder.finishRecordingAsPicture();

  MockCanvas mock(100, 100);
  record->Playback(&mock);

  ASSERT_EQ(1U, mock.paths().size());
  SkPoint last_point;
  EXPECT_TRUE(mock.paths()[0].getLastPt(&last_point));
  EXPECT_EQ(SkIntToScalar(74), last_point.x());
  EXPECT_EQ(SkIntToScalar(77), last_point.y());
}

}  // namespace

}  // namespace gfx