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// Copyright 2016 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 "third_party/blink/renderer/core/scroll/scrollbar_theme_overlay.h"
#include "third_party/blink/renderer/core/scroll/scroll_types.h"
#include "third_party/blink/renderer/core/scroll/scrollbar_test_suite.h"
#include "third_party/blink/renderer/platform/testing/testing_platform_support_with_mock_scheduler.h"
namespace blink {
using testing::NiceMock;
using testing::Return;
class ScrollbarThemeOverlayTest : public testing::Test {};
TEST_F(ScrollbarThemeOverlayTest, PaintInvalidation) {
ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler>
platform;
NiceMock<MockScrollableArea>* mock_scrollable_area =
MakeGarbageCollected<NiceMock<MockScrollableArea>>(
ScrollOffset(100, 100));
ScrollbarThemeOverlay theme(14, 0);
Scrollbar* vertical_scrollbar = Scrollbar::CreateForTesting(
mock_scrollable_area, kVerticalScrollbar, kRegularScrollbar, &theme);
Scrollbar* horizontal_scrollbar = Scrollbar::CreateForTesting(
mock_scrollable_area, kHorizontalScrollbar, kRegularScrollbar, &theme);
ON_CALL(*mock_scrollable_area, VerticalScrollbar())
.WillByDefault(Return(vertical_scrollbar));
ON_CALL(*mock_scrollable_area, HorizontalScrollbar())
.WillByDefault(Return(horizontal_scrollbar));
IntRect vertical_rect(1010, 0, 14, 768);
IntRect horizontal_rect(0, 754, 1024, 14);
vertical_scrollbar->SetFrameRect(vertical_rect);
horizontal_scrollbar->SetFrameRect(horizontal_rect);
ASSERT_EQ(vertical_scrollbar, mock_scrollable_area->VerticalScrollbar());
ASSERT_EQ(horizontal_scrollbar, mock_scrollable_area->HorizontalScrollbar());
vertical_scrollbar->ClearTrackNeedsRepaint();
vertical_scrollbar->ClearThumbNeedsRepaint();
horizontal_scrollbar->ClearTrackNeedsRepaint();
horizontal_scrollbar->ClearThumbNeedsRepaint();
mock_scrollable_area->ClearNeedsPaintInvalidationForScrollControls();
ASSERT_FALSE(vertical_scrollbar->ThumbNeedsRepaint());
ASSERT_FALSE(vertical_scrollbar->TrackNeedsRepaint());
ASSERT_FALSE(mock_scrollable_area->VerticalScrollbarNeedsPaintInvalidation());
ASSERT_FALSE(horizontal_scrollbar->ThumbNeedsRepaint());
ASSERT_FALSE(horizontal_scrollbar->TrackNeedsRepaint());
ASSERT_FALSE(
mock_scrollable_area->HorizontalScrollbarNeedsPaintInvalidation());
// Changing the scroll offset shouldn't invalid the thumb nor track, but it
// should cause a "general" invalidation for non-composited scrollbars.
// Ensure the horizontal scrollbar is unaffected.
mock_scrollable_area->UpdateScrollOffset(ScrollOffset(0, 5),
mojom::blink::ScrollType::kUser);
vertical_scrollbar->OffsetDidChange(mojom::blink::ScrollType::kUser);
horizontal_scrollbar->OffsetDidChange(mojom::blink::ScrollType::kUser);
EXPECT_FALSE(vertical_scrollbar->ThumbNeedsRepaint());
EXPECT_FALSE(vertical_scrollbar->TrackNeedsRepaint());
EXPECT_TRUE(mock_scrollable_area->VerticalScrollbarNeedsPaintInvalidation());
EXPECT_FALSE(horizontal_scrollbar->ThumbNeedsRepaint());
EXPECT_FALSE(horizontal_scrollbar->TrackNeedsRepaint());
EXPECT_FALSE(
mock_scrollable_area->HorizontalScrollbarNeedsPaintInvalidation());
// Try the horizontal scrollbar.
mock_scrollable_area->ClearNeedsPaintInvalidationForScrollControls();
mock_scrollable_area->UpdateScrollOffset(ScrollOffset(5, 5),
mojom::blink::ScrollType::kUser);
horizontal_scrollbar->OffsetDidChange(mojom::blink::ScrollType::kUser);
vertical_scrollbar->OffsetDidChange(mojom::blink::ScrollType::kUser);
EXPECT_FALSE(vertical_scrollbar->ThumbNeedsRepaint());
EXPECT_FALSE(vertical_scrollbar->TrackNeedsRepaint());
EXPECT_FALSE(mock_scrollable_area->VerticalScrollbarNeedsPaintInvalidation());
EXPECT_FALSE(horizontal_scrollbar->ThumbNeedsRepaint());
EXPECT_FALSE(horizontal_scrollbar->TrackNeedsRepaint());
EXPECT_TRUE(
mock_scrollable_area->HorizontalScrollbarNeedsPaintInvalidation());
mock_scrollable_area->ClearNeedsPaintInvalidationForScrollControls();
// Move the mouse over the vertical scrollbar's thumb. Ensure the thumb is
// invalidated as its state is changed to hover.
vertical_scrollbar->SetHoveredPart(kThumbPart);
EXPECT_TRUE(vertical_scrollbar->ThumbNeedsRepaint());
EXPECT_TRUE(mock_scrollable_area->VerticalScrollbarNeedsPaintInvalidation());
vertical_scrollbar->ClearThumbNeedsRepaint();
mock_scrollable_area->ClearNeedsPaintInvalidationForScrollControls();
// Pressing down should also cause an invalidation.
vertical_scrollbar->SetPressedPart(kThumbPart, WebInputEvent::kMouseDown);
EXPECT_TRUE(vertical_scrollbar->ThumbNeedsRepaint());
EXPECT_TRUE(mock_scrollable_area->VerticalScrollbarNeedsPaintInvalidation());
vertical_scrollbar->ClearThumbNeedsRepaint();
mock_scrollable_area->ClearNeedsPaintInvalidationForScrollControls();
// Release should cause invalidation.
vertical_scrollbar->SetPressedPart(kNoPart, WebInputEvent::kMouseDown);
EXPECT_TRUE(vertical_scrollbar->ThumbNeedsRepaint());
EXPECT_TRUE(mock_scrollable_area->VerticalScrollbarNeedsPaintInvalidation());
vertical_scrollbar->ClearThumbNeedsRepaint();
mock_scrollable_area->ClearNeedsPaintInvalidationForScrollControls();
// Move off should cause invalidation
vertical_scrollbar->SetHoveredPart(kNoPart);
EXPECT_TRUE(vertical_scrollbar->ThumbNeedsRepaint());
EXPECT_TRUE(mock_scrollable_area->VerticalScrollbarNeedsPaintInvalidation());
vertical_scrollbar->ClearThumbNeedsRepaint();
mock_scrollable_area->ClearNeedsPaintInvalidationForScrollControls();
// Hiding the scrollbar should invalidate the layer (SetNeedsDisplay) but not
// trigger repaint of the thumb resouce, since the compositor will give the
// entire layer opacity 0.
EXPECT_CALL(*mock_scrollable_area, ScrollbarsHiddenIfOverlay())
.WillOnce(Return(true));
vertical_scrollbar->SetEnabled(false);
EXPECT_FALSE(vertical_scrollbar->ThumbNeedsRepaint());
EXPECT_TRUE(mock_scrollable_area->VerticalScrollbarNeedsPaintInvalidation());
mock_scrollable_area->ClearNeedsPaintInvalidationForScrollControls();
// Showing the scrollbar needs to repaint the thumb resource, since it may
// have been repainted in the disabled state while hidden (e.g. from
// SetProportion on bounds changes).
EXPECT_CALL(*mock_scrollable_area, ScrollbarsHiddenIfOverlay())
.WillOnce(Return(false));
vertical_scrollbar->SetEnabled(true);
EXPECT_TRUE(vertical_scrollbar->ThumbNeedsRepaint());
EXPECT_TRUE(mock_scrollable_area->VerticalScrollbarNeedsPaintInvalidation());
ThreadState::Current()->CollectAllGarbageForTesting();
}
} // namespace blink
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