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cc / animation / filter_animation_curve_unittest.cc [blame]
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/animation/filter_animation_curve.h"
#include <memory>
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/animation/tween.h"
#include "ui/gfx/geometry/box_f.h"
#include "ui/gfx/geometry/transform_operations.h"
namespace cc {
namespace {
#define SAMPLE(curve, time) \
curve->GetTransformedValue(time, \
time < base::TimeDelta() \
? gfx::TimingFunction::LimitDirection::LEFT \
: gfx::TimingFunction::LimitDirection::RIGHT)
void ExpectBrightness(double brightness, const FilterOperations& filter) {
EXPECT_EQ(1u, filter.size());
EXPECT_EQ(FilterOperation::BRIGHTNESS, filter.at(0).type());
EXPECT_FLOAT_EQ(brightness, filter.at(0).amount());
}
// Tests that a filter animation with one keyframe works as expected.
TEST(FilterAnimationCurveTest, OneFilterKeyframe) {
std::unique_ptr<KeyframedFilterAnimationCurve> curve(
KeyframedFilterAnimationCurve::Create());
FilterOperations operations;
operations.Append(FilterOperation::CreateBrightnessFilter(2.f));
curve->AddKeyframe(
FilterKeyframe::Create(base::TimeDelta(), operations, nullptr));
ExpectBrightness(2.f, SAMPLE(curve, base::Seconds(-1.f)));
ExpectBrightness(2.f, SAMPLE(curve, base::Seconds(0.f)));
ExpectBrightness(2.f, SAMPLE(curve, base::Seconds(0.5f)));
ExpectBrightness(2.f, SAMPLE(curve, base::Seconds(1.f)));
ExpectBrightness(2.f, SAMPLE(curve, base::Seconds(2.f)));
}
// Tests that a filter animation with two keyframes works as expected.
TEST(FilterAnimationCurveTest, TwoFilterKeyframe) {
std::unique_ptr<KeyframedFilterAnimationCurve> curve(
KeyframedFilterAnimationCurve::Create());
FilterOperations operations1;
operations1.Append(FilterOperation::CreateBrightnessFilter(2.f));
FilterOperations operations2;
operations2.Append(FilterOperation::CreateBrightnessFilter(4.f));
curve->AddKeyframe(
FilterKeyframe::Create(base::TimeDelta(), operations1, nullptr));
curve->AddKeyframe(
FilterKeyframe::Create(base::Seconds(1.f), operations2, nullptr));
ExpectBrightness(2.f, SAMPLE(curve, base::Seconds(-1.f)));
ExpectBrightness(2.f, SAMPLE(curve, base::Seconds(0.f)));
ExpectBrightness(3.f, SAMPLE(curve, base::Seconds(0.5f)));
ExpectBrightness(4.f, SAMPLE(curve, base::Seconds(1.f)));
ExpectBrightness(4.f, SAMPLE(curve, base::Seconds(2.f)));
}
// Tests that a filter animation with three keyframes works as expected.
TEST(FilterAnimationCurveTest, ThreeFilterKeyframe) {
std::unique_ptr<KeyframedFilterAnimationCurve> curve(
KeyframedFilterAnimationCurve::Create());
FilterOperations operations1;
operations1.Append(FilterOperation::CreateBrightnessFilter(2.f));
FilterOperations operations2;
operations2.Append(FilterOperation::CreateBrightnessFilter(4.f));
FilterOperations operations3;
operations3.Append(FilterOperation::CreateBrightnessFilter(8.f));
curve->AddKeyframe(
FilterKeyframe::Create(base::TimeDelta(), operations1, nullptr));
curve->AddKeyframe(
FilterKeyframe::Create(base::Seconds(1.f), operations2, nullptr));
curve->AddKeyframe(
FilterKeyframe::Create(base::Seconds(2.f), operations3, nullptr));
ExpectBrightness(2.f, SAMPLE(curve, base::Seconds(-1.f)));
ExpectBrightness(2.f, SAMPLE(curve, base::Seconds(0.f)));
ExpectBrightness(3.f, SAMPLE(curve, base::Seconds(0.5f)));
ExpectBrightness(4.f, SAMPLE(curve, base::Seconds(1.f)));
ExpectBrightness(6.f, SAMPLE(curve, base::Seconds(1.5f)));
ExpectBrightness(8.f, SAMPLE(curve, base::Seconds(2.f)));
ExpectBrightness(8.f, SAMPLE(curve, base::Seconds(3.f)));
}
// Tests that a filter animation with multiple keys at a given time works
// sanely.
TEST(FilterAnimationCurveTest, RepeatedFilterKeyTimes) {
std::unique_ptr<KeyframedFilterAnimationCurve> curve(
KeyframedFilterAnimationCurve::Create());
// A step function.
FilterOperations operations1;
operations1.Append(FilterOperation::CreateBrightnessFilter(4.f));
FilterOperations operations2;
operations2.Append(FilterOperation::CreateBrightnessFilter(4.f));
FilterOperations operations3;
operations3.Append(FilterOperation::CreateBrightnessFilter(6.f));
FilterOperations operations4;
operations4.Append(FilterOperation::CreateBrightnessFilter(6.f));
curve->AddKeyframe(
FilterKeyframe::Create(base::TimeDelta(), operations1, nullptr));
curve->AddKeyframe(
FilterKeyframe::Create(base::Seconds(1.f), operations2, nullptr));
curve->AddKeyframe(
FilterKeyframe::Create(base::Seconds(1.f), operations3, nullptr));
curve->AddKeyframe(
FilterKeyframe::Create(base::Seconds(2.f), operations4, nullptr));
ExpectBrightness(4.f, SAMPLE(curve, base::Seconds(-1.f)));
ExpectBrightness(4.f, SAMPLE(curve, base::Seconds(0.f)));
ExpectBrightness(4.f, SAMPLE(curve, base::Seconds(0.5f)));
// There is a discontinuity at 1. Any value between 4 and 6 is valid.
FilterOperations value = SAMPLE(curve, base::Seconds(1.f));
EXPECT_EQ(1u, value.size());
EXPECT_EQ(FilterOperation::BRIGHTNESS, value.at(0).type());
EXPECT_GE(value.at(0).amount(), 4);
EXPECT_LE(value.at(0).amount(), 6);
ExpectBrightness(6.f, SAMPLE(curve, base::Seconds(1.5f)));
ExpectBrightness(6.f, SAMPLE(curve, base::Seconds(2.f)));
ExpectBrightness(6.f, SAMPLE(curve, base::Seconds(3.f)));
}
} // namespace
} // namespace cc