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// Copyright 2018 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/animation/css/css_animations.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/core/animation/animation.h"
#include "third_party/blink/renderer/core/animation/element_animations.h"
#include "third_party/blink/renderer/core/dom/node_computed_style.h"
#include "third_party/blink/renderer/core/layout/layout_object.h"
#include "third_party/blink/renderer/core/testing/core_unit_test_helper.h"
#include "third_party/blink/renderer/platform/animation/compositor_animation_delegate.h"
namespace blink {
class CSSAnimationsTest : public RenderingTest {
public:
CSSAnimationsTest() {
EnablePlatform();
platform()->SetThreadedAnimationEnabled(true);
}
void SetUp() override {
platform()->SetAutoAdvanceNowToPendingTasks(false);
// Advance timer manually as RenderingTest expects the time to be non-zero.
platform()->AdvanceClockSeconds(1.);
RenderingTest::SetUp();
EnableCompositing();
}
void TearDown() override {
platform()->SetAutoAdvanceNowToPendingTasks(true);
platform()->RunUntilIdle();
}
void StartAnimationOnCompositor(Animation* animation) {
static_cast<CompositorAnimationDelegate*>(animation)
->NotifyAnimationStarted(
(CurrentTimeTicks() - base::TimeTicks()).InSecondsF(),
animation->CompositorGroup());
}
void AdvanceClockSeconds(double seconds) {
platform()->AdvanceClockSeconds(seconds);
platform()->RunUntilIdle();
}
double GetContrastFilterAmount(Element* element) {
EXPECT_EQ(1u, element->GetComputedStyle()->Filter().size());
const FilterOperation* filter =
element->GetComputedStyle()->Filter().Operations()[0];
EXPECT_EQ(FilterOperation::OperationType::CONTRAST, filter->GetType());
return static_cast<const BasicComponentTransferFilterOperation*>(filter)
->Amount();
}
};
// Verify that a composited animation is retargeted according to its composited
// time.
TEST_F(CSSAnimationsTest, RetargetedTransition) {
SetBodyInnerHTML(R"HTML(
<style>
#test { transition: filter linear 1s; }
.contrast1 { filter: contrast(50%); }
.contrast2 { filter: contrast(0%); }
</style>
<div id='test'></div>
)HTML");
Element* element = GetDocument().getElementById("test");
element->setAttribute(html_names::kClassAttr, "contrast1");
UpdateAllLifecyclePhasesForTest();
ElementAnimations* animations = element->GetElementAnimations();
EXPECT_EQ(1u, animations->Animations().size());
Animation* animation = (*animations->Animations().begin()).key;
// Start animation on compositor and advance .8 seconds.
StartAnimationOnCompositor(animation);
EXPECT_TRUE(animation->HasActiveAnimationsOnCompositor());
AdvanceClockSeconds(0.8);
// Starting the second transition should retarget the active transition.
element->setAttribute(html_names::kClassAttr, "contrast2");
GetPage().Animator().ServiceScriptedAnimations(CurrentTimeTicks());
UpdateAllLifecyclePhasesForTest();
EXPECT_NEAR(0.6, GetContrastFilterAmount(element), 0.00000000001);
// As it has been retargeted, advancing halfway should go to 0.3.
AdvanceClockSeconds(0.5);
GetPage().Animator().ServiceScriptedAnimations(CurrentTimeTicks());
UpdateAllLifecyclePhasesForTest();
EXPECT_NEAR(0.3, GetContrastFilterAmount(element), 0.00000000001);
}
// Test that when an incompatible in progress compositor transition
// would be retargeted it does not incorrectly combine with a new
// transition target.
TEST_F(CSSAnimationsTest, IncompatibleRetargetedTransition) {
SetBodyInnerHTML(R"HTML(
<style>
#test { transition: filter 1s; }
.saturate { filter: saturate(20%); }
.contrast { filter: contrast(20%); }
</style>
<div id='test'></div>
)HTML");
Element* element = GetDocument().getElementById("test");
element->setAttribute(html_names::kClassAttr, "saturate");
UpdateAllLifecyclePhasesForTest();
ElementAnimations* animations = element->GetElementAnimations();
EXPECT_EQ(1u, animations->Animations().size());
Animation* animation = (*animations->Animations().begin()).key;
// Start animation on compositor and advance partially.
StartAnimationOnCompositor(animation);
EXPECT_TRUE(animation->HasActiveAnimationsOnCompositor());
AdvanceClockSeconds(0.003);
// The computed style still contains no filter until the next frame.
EXPECT_TRUE(element->GetComputedStyle()->Filter().IsEmpty());
// Now we start a contrast filter. Since it will try to combine with
// the in progress saturate filter, and be incompatible, there should
// be no transition and it should immediately apply on the next frame.
element->setAttribute(html_names::kClassAttr, "contrast");
EXPECT_TRUE(element->GetComputedStyle()->Filter().IsEmpty());
UpdateAllLifecyclePhasesForTest();
EXPECT_EQ(0.2, GetContrastFilterAmount(element));
}
} // namespace blink
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