本文整理汇总了C++中ScrollableArea::scrollIntoView方法的典型用法代码示例。如果您正苦于以下问题：C++ ScrollableArea::scrollIntoView方法的具体用法？C++ ScrollableArea::scrollIntoView怎么用？C++ ScrollableArea::scrollIntoView使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ScrollableArea的用法示例。
在下文中一共展示了ScrollableArea::scrollIntoView方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: viewportSize
// Test that the scrollIntoView correctly scrolls the main frame
// and visual viewport such that the given rect is centered in the viewport.
TEST_F(RootFrameViewportTest, ScrollIntoView) {
IntSize viewportSize(100, 150);
RootFrameViewStub* layoutViewport =
RootFrameViewStub::create(viewportSize, IntSize(200, 300));
VisualViewportStub* visualViewport =
VisualViewportStub::create(viewportSize, viewportSize);
ScrollableArea* rootFrameViewport =
RootFrameViewport::create(*visualViewport, *layoutViewport);
// Test that the visual viewport is scrolled if the viewport has been
// resized (as is the case when the ChromeOS keyboard comes up) but not
// scaled.
visualViewport->setViewportSize(IntSize(100, 100));
rootFrameViewport->scrollIntoView(LayoutRect(100, 250, 50, 50),
ScrollAlignment::alignToEdgeIfNeeded,
ScrollAlignment::alignToEdgeIfNeeded);
EXPECT_SIZE_EQ(ScrollOffset(50, 150), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 50), visualViewport->getScrollOffset());
rootFrameViewport->scrollIntoView(LayoutRect(25, 75, 50, 50),
ScrollAlignment::alignToEdgeIfNeeded,
ScrollAlignment::alignToEdgeIfNeeded);
EXPECT_SIZE_EQ(ScrollOffset(25, 75), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 0), visualViewport->getScrollOffset());
// Reset the visual viewport's size, scale the page, and repeat the test
visualViewport->setViewportSize(IntSize(100, 150));
visualViewport->setScale(2);
rootFrameViewport->setScrollOffset(ScrollOffset(), ProgrammaticScroll);
rootFrameViewport->scrollIntoView(LayoutRect(50, 75, 50, 75),
ScrollAlignment::alignToEdgeIfNeeded,
ScrollAlignment::alignToEdgeIfNeeded);
EXPECT_SIZE_EQ(ScrollOffset(0, 0), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 75), visualViewport->getScrollOffset());
rootFrameViewport->scrollIntoView(LayoutRect(190, 290, 10, 10),
ScrollAlignment::alignToEdgeIfNeeded,
ScrollAlignment::alignToEdgeIfNeeded);
EXPECT_SIZE_EQ(ScrollOffset(100, 150), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(50, 75), visualViewport->getScrollOffset());
// Scrolling into view the viewport rect itself should be a no-op.
visualViewport->setViewportSize(IntSize(100, 100));
visualViewport->setScale(1.5f);
visualViewport->setScrollOffset(ScrollOffset(0, 10), ProgrammaticScroll);
layoutViewport->setScrollOffset(ScrollOffset(50, 50), ProgrammaticScroll);
rootFrameViewport->setScrollOffset(rootFrameViewport->getScrollOffset(),
ProgrammaticScroll);
rootFrameViewport->scrollIntoView(
LayoutRect(rootFrameViewport->visibleContentRect(ExcludeScrollbars)),
ScrollAlignment::alignToEdgeIfNeeded,
ScrollAlignment::alignToEdgeIfNeeded);
EXPECT_SIZE_EQ(ScrollOffset(50, 50), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 10), visualViewport->getScrollOffset());
rootFrameViewport->scrollIntoView(
LayoutRect(rootFrameViewport->visibleContentRect(ExcludeScrollbars)),
ScrollAlignment::alignCenterAlways, ScrollAlignment::alignCenterAlways);
EXPECT_SIZE_EQ(ScrollOffset(50, 50), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 10), visualViewport->getScrollOffset());
rootFrameViewport->scrollIntoView(
LayoutRect(rootFrameViewport->visibleContentRect(ExcludeScrollbars)),
ScrollAlignment::alignTopAlways, ScrollAlignment::alignTopAlways);
EXPECT_SIZE_EQ(ScrollOffset(50, 50), layoutViewport->getScrollOffset());
EXPECT_SIZE_EQ(ScrollOffset(0, 10), visualViewport->getScrollOffset());
}