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-rw-r--r--chromium/third_party/blink/renderer/core/paint/paint_layer_test.cc269
1 files changed, 269 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/core/paint/paint_layer_test.cc b/chromium/third_party/blink/renderer/core/paint/paint_layer_test.cc
index f0dc94a3304..0a92e59cf2f 100644
--- a/chromium/third_party/blink/renderer/core/paint/paint_layer_test.cc
+++ b/chromium/third_party/blink/renderer/core/paint/paint_layer_test.cc
@@ -4,7 +4,9 @@
#include "third_party/blink/renderer/core/paint/paint_layer.h"
+#include "base/test/scoped_feature_list.h"
#include "testing/gmock/include/gmock/gmock.h"
+#include "third_party/blink/public/common/features.h"
#include "third_party/blink/renderer/core/dom/pseudo_element.h"
#include "third_party/blink/renderer/core/html/html_iframe_element.h"
#include "third_party/blink/renderer/core/layout/layout_box_model_object.h"
@@ -2615,4 +2617,271 @@ TEST_P(PaintLayerTest, InlineWithBackdropFilterHasPaintLayer) {
EXPECT_NE(nullptr, paint_layer);
}
+TEST_P(PaintLayerTest, FixedDoesNotUseExpandedBoundingBoxForOverlap) {
+ // TODO(samfort): Remove this test after kMaxOverlapBoundsForFixed ships.
+ base::test::ScopedFeatureList feature_list;
+ feature_list.InitWithFeatureState(blink::features::kMaxOverlapBoundsForFixed,
+ false);
+
+ SetBodyInnerHTML(R"HTML(
+ <style>
+ * {
+ margin: 0;
+ }
+ body {
+ height: 610px;
+ width: 820px;
+ }
+ #fixed {
+ height: 10px;
+ left: 50px;
+ position: fixed;
+ top: 50px;
+ width: 10px;
+ }
+ </style>
+ <div id=fixed></div>
+ )HTML");
+
+ PaintLayer* fixed =
+ ToLayoutBoxModelObject(GetLayoutObjectByElementId("fixed"))->Layer();
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(0, 0, 10, 10));
+
+ // Modify the scroll offset and ensure that the bounding box is still the
+ // same.
+ GetDocument().View()->LayoutViewport()->SetScrollOffset(
+ ScrollOffset(10, 10), mojom::blink::ScrollType::kProgrammatic);
+ UpdateAllLifecyclePhasesForTest();
+
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(0, 0, 10, 10));
+}
+
+TEST_P(PaintLayerTest, FixedUsesExpandedBoundingBoxForOverlap) {
+ base::test::ScopedFeatureList feature_list;
+ feature_list.InitWithFeatureState(blink::features::kMaxOverlapBoundsForFixed,
+ true);
+
+ SetBodyInnerHTML(R"HTML(
+ <style>
+ * {
+ margin: 0;
+ }
+ body {
+ height: 610px;
+ width: 820px;
+ }
+ #fixed {
+ height: 10px;
+ left: 50px;
+ position: fixed;
+ top: 50px;
+ width: 10px;
+ }
+ </style>
+ <div id=fixed></div>
+ )HTML");
+
+ PaintLayer* fixed =
+ ToLayoutBoxModelObject(GetLayoutObjectByElementId("fixed"))->Layer();
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(0, 0, 30, 20));
+
+ // Modify the viewport scroll offset and ensure that the bounding box is still
+ // adjusted by the new amount the viewport can scroll in any direction.
+ GetDocument().View()->LayoutViewport()->SetScrollOffset(
+ ScrollOffset(10, 10), mojom::blink::ScrollType::kProgrammatic);
+ UpdateAllLifecyclePhasesForTest();
+
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(-10, -10, 30, 20));
+}
+
+TEST_P(PaintLayerTest, FixedInScrollerUsesExpandedBoundingBoxForOverlap) {
+ base::test::ScopedFeatureList feature_list;
+ feature_list.InitWithFeatureState(blink::features::kMaxOverlapBoundsForFixed,
+ true);
+
+ SetBodyInnerHTML(R"HTML(
+ <style>
+ * {
+ margin: 0;
+ }
+ body {
+ height: 610px;
+ width: 820px;
+ }
+ #scroller {
+ height: 100px;
+ left: 100px;
+ overflow: scroll;
+ position: absolute;
+ top: 100px;
+ width: 100px;
+ }
+ #spacer {
+ height: 500px;
+ }
+ #fixed {
+ height: 10px;
+ left: 50px;
+ position: fixed;
+ top: 50px;
+ width: 10px;
+ }
+ </style>
+ <div id=scroller>
+ <div id=fixed></div>
+ <div id=spacer></div>
+ </div>
+ )HTML");
+
+ PaintLayer* fixed =
+ ToLayoutBoxModelObject(GetLayoutObjectByElementId("fixed"))->Layer();
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(0, 0, 30, 20));
+
+ // Modify the inner scroll offset and ensure that the bounding box is still
+ // the same.
+ PaintLayerScrollableArea* scrollable_area =
+ ToLayoutBoxModelObject(GetLayoutObjectByElementId("scroller"))
+ ->Layer()
+ ->GetScrollableArea();
+ scrollable_area->ScrollToAbsolutePosition(FloatPoint(10, 10));
+ UpdateAllLifecyclePhasesForTest();
+
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(0, 0, 30, 20));
+
+ // Modify the viewport scroll offset and ensure that the bounding box is still
+ // adjusted by the newamount the viewport can scroll in any direction.
+ GetDocument().View()->LayoutViewport()->SetScrollOffset(
+ ScrollOffset(10, 10), mojom::blink::ScrollType::kProgrammatic);
+ UpdateAllLifecyclePhasesForTest();
+
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(-10, -10, 30, 20));
+}
+
+TEST_P(PaintLayerTest, FixedUnderTransformDoesNotExpandBoundingBoxForOverlap) {
+ base::test::ScopedFeatureList feature_list;
+ feature_list.InitWithFeatureState(blink::features::kMaxOverlapBoundsForFixed,
+ true);
+
+ SetBodyInnerHTML(R"HTML(
+ <style>
+ .anim {
+ animation: pulse 5s infinite;
+ }
+ @keyframes pulse {
+ 0% { opacity: 0.1; }
+ 100% { opacity: 0.9; }
+ }
+ .xform {
+ height: 100px;
+ left: 100px;
+ position: absolute;
+ top: 100px;
+ transform: rotate(20deg);
+ width: 100px;
+ }
+ .fixed {
+ height: 50px;
+ left: 25px;
+ position: fixed;
+ top: 25px;
+ width: 50px;
+ }
+ .spacer {
+ height: 2000px;
+ }
+ </style>
+ <div id=fixed-cb class=xform>
+ <div id=fixed class='fixed anim'></div>
+ </div>
+ <div class=spacer></div>
+ )HTML");
+
+ // The animation is to cause the fixed to be composited. However, even with
+ // fixed composited, it shouldn't have expanded bounds because its containing
+ // block isn't the viewport.
+ PaintLayer* fixed =
+ ToLayoutBoxModelObject(GetLayoutObjectByElementId("fixed"))->Layer();
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(0, 0, 50, 50));
+}
+
+TEST_P(PaintLayerTest, NestedFixedUsesExpandedBoundingBoxForOverlap) {
+ base::test::ScopedFeatureList feature_list;
+ feature_list.InitWithFeatureState(blink::features::kMaxOverlapBoundsForFixed,
+ true);
+
+ SetBodyInnerHTML(R"HTML(
+ <style>
+ * {
+ margin: 0;
+ }
+ body {
+ height: 610px;
+ width: 820px;
+ }
+ #iframe1 {
+ height: 100px;
+ left: 50px;
+ position: fixed;
+ top: 50px;
+ width: 100px;
+ }
+ </style>
+ <iframe id=iframe1></iframe>
+ )HTML");
+ SetChildFrameHTML(R"HTML(
+ <style>
+ * {
+ margin: 0;
+ }
+ body {
+ height: 500px;
+ width: 500px;
+ }
+ #fixed {
+ height: 10px;
+ left: 50px;
+ position: fixed;
+ top: 50px;
+ width: 10px;
+ }
+ </style>
+ <div id=fixed></div>
+ )HTML");
+ UpdateAllLifecyclePhasesForTest();
+
+ PaintLayer* fixed =
+ ToLayoutBoxModelObject(
+ ChildDocument().getElementById("fixed")->GetLayoutObject())
+ ->Layer();
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(0, 0, 410, 410));
+
+ // Modify the top-most viewport's scroll offset and ensure that the bounding
+ // box is still the same. This shows that we're not considering the wrong
+ // viewport's scroll offset when computing the bounding box.
+ GetDocument().View()->LayoutViewport()->SetScrollOffset(
+ ScrollOffset(10, 10), mojom::blink::ScrollType::kProgrammatic);
+ UpdateAllLifecyclePhasesForTest();
+
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(0, 0, 410, 410));
+
+ // Now modify the iframe's scroll offset. This one should affect the fixed's
+ // bounding box.
+ ChildDocument().View()->LayoutViewport()->SetScrollOffset(
+ ScrollOffset(10, 10), mojom::blink::ScrollType::kProgrammatic);
+ UpdateAllLifecyclePhasesForTest();
+
+ EXPECT_EQ(fixed->BoundingBoxForCompositingOverlapTest(),
+ PhysicalRect(-10, -10, 410, 410));
+}
+
} // namespace blink
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