// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/ozone/platform/wayland/common/wayland_util.h"

#include <memory>

#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkPath.h"
#include "third_party/skia/include/core/SkPathBuilder.h"
#include "third_party/skia/include/core/SkRRect.h"
#include "third_party/skia/include/core/SkRect.h"

namespace ui {

class WaylandUtilTest : public testing::Test {};

TEST_F(WaylandUtilTest, TestCreateRectsFromSkPath) {
  constexpr int width = 100;
  constexpr int height = 100;

  // Test1 consists of 2 rectangles from SkPath.
  std::vector<gfx::Rect> expectedFor2Rects = {gfx::Rect(1, 0, 99, 1),
                                              gfx::Rect(0, 1, 100, 99)};
  const SkRect rect = SkRect::MakeIWH(width, height);
  constexpr SkScalar corner_radius_scalar = 2.0;
  constexpr SkVector radii[4] = {
      {corner_radius_scalar, corner_radius_scalar},  // top-left
      {corner_radius_scalar, corner_radius_scalar},  // top-right
      {0, 0},                                        // bottom-right
      {0, 0}};                                       // bottom-left
  const SkPath pathFor2Rects =
      SkPath::RRect(SkRRect::MakeRectRadii(rect, radii));
  EXPECT_EQ(expectedFor2Rects, wl::CreateRectsFromSkPath(pathFor2Rects));

  // Test2 consists of 5 rectangles from SkPath.
  std::vector<gfx::Rect> expectedFor5Rects = {
      gfx::Rect(3, 0, 94, 1), gfx::Rect(1, 1, 98, 2), gfx::Rect(0, 3, 100, 94),
      gfx::Rect(1, 97, 98, 2), gfx::Rect(3, 99, 94, 1)};
  SkPathBuilder pathFor5Rects;
  pathFor5Rects.moveTo(0, 3);
  pathFor5Rects.lineTo(1, 3);
  pathFor5Rects.lineTo(1, 1);
  pathFor5Rects.lineTo(3, 1);
  pathFor5Rects.lineTo(3, 0);

  pathFor5Rects.lineTo(width - 3, 0);
  pathFor5Rects.lineTo(width - 3, 1);
  pathFor5Rects.lineTo(width - 1, 1);
  pathFor5Rects.lineTo(width - 1, 3);
  pathFor5Rects.lineTo(width, 3);

  pathFor5Rects.lineTo(width, height - 3);
  pathFor5Rects.lineTo(width - 1, height - 3);
  pathFor5Rects.lineTo(width - 1, height - 1);
  pathFor5Rects.lineTo(width - 3, height - 1);
  pathFor5Rects.lineTo(width - 3, height);

  pathFor5Rects.lineTo(3, height);
  pathFor5Rects.lineTo(3, height - 1);
  pathFor5Rects.lineTo(1, height - 1);
  pathFor5Rects.lineTo(1, height - 3);
  pathFor5Rects.lineTo(0, height - 3);
  pathFor5Rects.close();

  EXPECT_EQ(expectedFor5Rects,
            wl::CreateRectsFromSkPath(pathFor5Rects.detach()));
}

}  // namespace ui