TEST_F(CompositedLayerMappingTest, RotatedInterestRect)
{
setBodyInnerHTML(
"<div id='target' style='width: 200px; height: 200px; will-change: transform; transform: rotateZ(45deg)'></div>");
document().view()->updateAllLifecyclePhases();
Element* element = document().getElementById("target");
PaintLayer* paintLayer = toLayoutBoxModelObject(element->layoutObject())->layer();
ASSERT_TRUE(!!paintLayer->graphicsLayerBacking());
EXPECT_RECT_EQ(IntRect(0, 0, 200, 200), recomputeInterestRect(paintLayer->graphicsLayerBacking()));
}
TEST_F(CompositedLayerMappingTest, TallLayerInterestRect)
{
setBodyInnerHTML("<div id='target' style='width: 200px; height: 10000px; will-change: transform'></div>");
document().view()->updateAllLifecyclePhases();
Element* element = document().getElementById("target");
PaintLayer* paintLayer = toLayoutBoxModelObject(element->layoutObject())->layer();
ASSERT_TRUE(paintLayer->graphicsLayerBacking());
// Screen-space visible content rect is [8, 8, 200, 600]. Mapping back to local, adding 4000px in all directions, then
// clipping, yields this rect.
EXPECT_RECT_EQ(IntRect(0, 0, 200, 4592), recomputeInterestRect(paintLayer->graphicsLayerBacking()));
}
TEST_F(CompositedLayerMappingTest, TallLayerWholeDocumentInterestRect)
{
setBodyInnerHTML("<div id='target' style='width: 200px; height: 10000px; will-change: transform'></div>");
document().settings()->setMainFrameClipsContent(false);
document().view()->updateAllLifecyclePhases();
Element* element = document().getElementById("target");
PaintLayer* paintLayer = toLayoutBoxModelObject(element->layoutObject())->layer();
ASSERT_TRUE(paintLayer->graphicsLayerBacking());
ASSERT_TRUE(paintLayer->compositedLayerMapping());
// recomputeInterestRect computes the interest rect; computeInterestRect applies the extra setting to paint everything.
EXPECT_RECT_EQ(IntRect(0, 0, 200, 4592), recomputeInterestRect(paintLayer->graphicsLayerBacking()));
EXPECT_RECT_EQ(IntRect(0, 0, 200, 10000), computeInterestRect(paintLayer->compositedLayerMapping(), paintLayer->graphicsLayerBacking(), IntRect()));
}
TEST_P(CompositedLayerMappingTest, RotatedInterestRectNear90Degrees) {
setBodyInnerHTML(
"<div id='target' style='width: 10000px; height: 200px; will-change: "
"transform; transform: rotateY(89.9999deg)'></div>");
document().view()->updateAllLifecyclePhases();
Element* element = document().getElementById("target");
PaintLayer* paintLayer =
toLayoutBoxModelObject(element->layoutObject())->layer();
ASSERT_TRUE(!!paintLayer->graphicsLayerBacking());
// Because the layer is rotated to almost 90 degrees, floating-point error
// leads to a reverse-projected rect that is much much larger than the
// original layer size in certain dimensions. In such cases, we often fall
// back to the 4000px interest rect padding amount.
EXPECT_RECT_EQ(IntRect(0, 0, 4000, 200),
recomputeInterestRect(paintLayer->graphicsLayerBacking()));
}
TEST_P(CompositedLayerMappingTest, VerticalRightLeftWritingModeDocument) {
setBodyInnerHTML(
"<style>html,body { margin: 0px } html { -webkit-writing-mode: "
"vertical-rl}</style> <div id='target' style='width: 10000px; height: "
"200px;'></div>");
document().view()->updateAllLifecyclePhases();
document().view()->layoutViewportScrollableArea()->setScrollOffset(
ScrollOffset(-5000, 0), ProgrammaticScroll);
document().view()->updateAllLifecyclePhases();
PaintLayer* paintLayer = document().layoutViewItem().layer();
ASSERT_TRUE(paintLayer->graphicsLayerBacking());
ASSERT_TRUE(paintLayer->compositedLayerMapping());
// A scroll by -5000px is equivalent to a scroll by (10000 - 5000 - 800)px =
// 4200px in non-RTL mode. Expanding the resulting rect by 4000px in each
// direction yields this result.
EXPECT_RECT_EQ(
IntRect(200, 0, 8800, 600),
recomputeInterestRect(paintLayer->graphicsLayerBackingForScrolling()));
}
TEST_P(CompositedLayerMappingTest, 3D90DegRotatedTallInterestRect) {
// It's rotated 90 degrees about the X axis, which means its visual content
// rect is empty, and so the interest rect is the default (0, 0, 4000, 4000)
// intersected with the layer bounds.
setBodyInnerHTML(
"<div id='target' style='width: 200px; height: 10000px; will-change: "
"transform; transform: rotateY(90deg)'></div>");
document().view()->updateAllLifecyclePhases();
Element* element = document().getElementById("target");
PaintLayer* paintLayer =
toLayoutBoxModelObject(element->layoutObject())->layer();
ASSERT_TRUE(!!paintLayer->graphicsLayerBacking());
EXPECT_RECT_EQ(IntRect(0, 0, 200, 4000),
recomputeInterestRect(paintLayer->graphicsLayerBacking()));
}
TEST_P(CompositedLayerMappingTest, 3D45DegRotatedTallInterestRect) {
setBodyInnerHTML(
"<div id='target' style='width: 200px; height: 10000px; will-change: "
"transform; transform: rotateY(45deg)'></div>");
document().view()->updateAllLifecyclePhases();
Element* element = document().getElementById("target");
PaintLayer* paintLayer =
toLayoutBoxModelObject(element->layoutObject())->layer();
ASSERT_TRUE(!!paintLayer->graphicsLayerBacking());
EXPECT_RECT_EQ(IntRect(0, 0, 200, 4592),
recomputeInterestRect(paintLayer->graphicsLayerBacking()));
}
ASSERT_TRUE(!!paintLayer->graphicsLayerBacking());
EXPECT_RECT_EQ(IntRect(0, 0, 200, 200), recomputeInterestRect(paintLayer->graphicsLayerBacking()));
}
TEST_F(CompositedLayerMappingTest, 3D90DegRotatedTallInterestRect)
{
// It's rotated 90 degrees about the X axis, which means its visual content rect is empty, and so the interest rect is the
// default (0, 0, 4000, 4000) intersected with the layer bounds.
setBodyInnerHTML(
"<div id='target' style='width: 200px; height: 10000px; will-change: transform; transform: rotateY(90deg)'></div>");
document().view()->updateAllLifecyclePhases();
Element* element = document().getElementById("target");
PaintLayer* paintLayer = toLayoutBoxModelObject(element->layoutObject())->layer();
ASSERT_TRUE(!!paintLayer->graphicsLayerBacking());
EXPECT_RECT_EQ(IntRect(0, 0, 200, 4000), recomputeInterestRect(paintLayer->graphicsLayerBacking()));
}
TEST_F(CompositedLayerMappingTest, 3D45DegRotatedTallInterestRect)
{
setBodyInnerHTML(
"<div id='target' style='width: 200px; height: 10000px; will-change: transform; transform: rotateY(45deg)'></div>");
document().view()->updateAllLifecyclePhases();
Element* element = document().getElementById("target");
PaintLayer* paintLayer = toLayoutBoxModelObject(element->layoutObject())->layer();
ASSERT_TRUE(!!paintLayer->graphicsLayerBacking());
EXPECT_RECT_EQ(IntRect(0, 0, 200, 4592), recomputeInterestRect(paintLayer->graphicsLayerBacking()));
}
TEST_F(CompositedLayerMappingTest, RotatedTallInterestRect)
