// Tests that scrolling the viewport when the layout viewport is
// !userInputScrollable (as happens when overflow:hidden is set) works
// correctly, that is, the visual viewport can scroll, but not the layout.
TEST_F(RootFrameViewportTest, UserInputScrollable) {
IntSize viewportSize(100, 150);
RootFrameViewStub* layoutViewport =
RootFrameViewStub::create(viewportSize, IntSize(200, 300));
VisualViewportStub* visualViewport =
VisualViewportStub::create(viewportSize, viewportSize);
ScrollableArea* rootFrameViewport =
RootFrameViewport::create(*visualViewport, *layoutViewport);
visualViewport->setScale(2);
// Disable just the layout viewport's horizontal scrolling, the
// RootFrameViewport should remain scrollable overall.
layoutViewport->setUserInputScrollable(false, true);
visualViewport->setUserInputScrollable(true, true);
EXPECT_TRUE(rootFrameViewport->userInputScrollable(HorizontalScrollbar));
EXPECT_TRUE(rootFrameViewport->userInputScrollable(VerticalScrollbar));
// Layout viewport shouldn't scroll since it's not horizontally scrollable,
// but visual viewport should.
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(300, 0));
EXPECT_SIZE_EQ(ScrollOffset(0, 0), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 0), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 0), rootFrameViewport->getScrollOffset());
// Vertical scrolling should be unaffected.
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(0, 300));
EXPECT_SIZE_EQ(ScrollOffset(0, 150), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 75), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 225), rootFrameViewport->getScrollOffset());
// Try the same checks as above but for the vertical direction.
// ===============================================
rootFrameViewport->setScrollOffset(ScrollOffset(), ProgrammaticScroll);
// Disable just the layout viewport's vertical scrolling, the
// RootFrameViewport should remain scrollable overall.
layoutViewport->setUserInputScrollable(true, false);
visualViewport->setUserInputScrollable(true, true);
EXPECT_TRUE(rootFrameViewport->userInputScrollable(HorizontalScrollbar));
EXPECT_TRUE(rootFrameViewport->userInputScrollable(VerticalScrollbar));
// Layout viewport shouldn't scroll since it's not vertically scrollable,
// but visual viewport should.
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(0, 300));
EXPECT_SIZE_EQ(ScrollOffset(0, 0), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 75), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 75), rootFrameViewport->getScrollOffset());
// Horizontal scrolling should be unaffected.
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(300, 0));
EXPECT_SIZE_EQ(ScrollOffset(100, 0), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 75), visualViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(150, 75), rootFrameViewport->getScrollOffset());
}
// Make sure scrolls using the scroll animator (scroll(), setScrollOffset())
// work correctly when one of the subviewports is explicitly scrolled without
// using the // RootFrameViewport interface.
TEST_F(RootFrameViewportTest, TestScrollAnimatorUpdatedBeforeScroll) {
IntSize viewportSize(100, 150);
RootFrameViewStub* layoutViewport =
RootFrameViewStub::create(viewportSize, IntSize(200, 300));
VisualViewportStub* visualViewport =
VisualViewportStub::create(viewportSize, viewportSize);
ScrollableArea* rootFrameViewport =
RootFrameViewport::create(*visualViewport, *layoutViewport);
visualViewport->setScale(2);
visualViewport->setScrollOffset(ScrollOffset(50, 75), ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(50, 75), rootFrameViewport->getScrollOffset());
// If the scroll animator doesn't update, it will still think it's at (0, 0)
// and so it may early exit.
rootFrameViewport->setScrollOffset(ScrollOffset(0, 0), ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(0, 0), rootFrameViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 0), visualViewport->getScrollOffset());
// Try again for userScroll()
visualViewport->setScrollOffset(ScrollOffset(50, 75), ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(50, 75), rootFrameViewport->getScrollOffset());
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(-50, 0));
EXPECT_SIZE_EQ(ScrollOffset(0, 75), rootFrameViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 75), visualViewport->getScrollOffset());
// Make sure the layout viewport is also accounted for.
rootFrameViewport->setScrollOffset(ScrollOffset(0, 0), ProgrammaticScroll);
layoutViewport->setScrollOffset(ScrollOffset(100, 150), ProgrammaticScroll);
EXPECT_SIZE_EQ(ScrollOffset(100, 150), rootFrameViewport->getScrollOffset());
rootFrameViewport->userScroll(ScrollByPixel, FloatSize(-100, 0));
EXPECT_SIZE_EQ(ScrollOffset(0, 150), rootFrameViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 150), layoutViewport->getScrollOffset());
}