Add target for webkit_compositor_unittests

webkit/compositor/WebTransformAnimationCurveTest.cpp

Index: webkit/compositor/WebTransformAnimationCurveTest.cpp
diff --git a/webkit/compositor/WebTransformAnimationCurveTest.cpp b/webkit/compositor/WebTransformAnimationCurveTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..ee86d6170d71f8fee17845b8d4bb825835b8b4f0
--- /dev/null
+++ b/webkit/compositor/WebTransformAnimationCurveTest.cpp
@@ -0,0 +1,277 @@
+// Copyright 2012 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 "config.h"
+
+#include <public/WebTransformAnimationCurve.h>
+
+#include "CCTimingFunction.h"
+
+#include <gtest/gtest.h>
+#include <public/WebTransformOperations.h>
+#include <public/WebTransformationMatrix.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+
+using namespace WebKit;
+
+namespace {
+
+// Tests that a transform animation with one keyframe works as expected.
+TEST(WebTransformAnimationCurveTest, OneTransformKeyframe)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations;
+    operations.appendTranslate(2, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    EXPECT_FLOAT_EQ(2, curve->getValue(-1).m41());
+    EXPECT_FLOAT_EQ(2, curve->getValue(0).m41());
+    EXPECT_FLOAT_EQ(2, curve->getValue(0.5).m41());
+    EXPECT_FLOAT_EQ(2, curve->getValue(1).m41());
+    EXPECT_FLOAT_EQ(2, curve->getValue(2).m41());
+}
+
+// Tests that a transform animation with two keyframes works as expected.
+TEST(WebTransformAnimationCurveTest, TwoTransformKeyframe)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(2, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(4, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+    EXPECT_FLOAT_EQ(2, curve->getValue(-1).m41());
+    EXPECT_FLOAT_EQ(2, curve->getValue(0).m41());
+    EXPECT_FLOAT_EQ(3, curve->getValue(0.5).m41());
+    EXPECT_FLOAT_EQ(4, curve->getValue(1).m41());
+    EXPECT_FLOAT_EQ(4, curve->getValue(2).m41());
+}
+
+// Tests that a transform animation with three keyframes works as expected.
+TEST(WebTransformAnimationCurveTest, ThreeTransformKeyframe)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(2, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(4, 0, 0);
+    WebKit::WebTransformOperations operations3;
+    operations3.appendTranslate(8, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebTransformKeyframe(2, operations3), WebAnimationCurve::TimingFunctionTypeLinear);
+    EXPECT_FLOAT_EQ(2, curve->getValue(-1).m41());
+    EXPECT_FLOAT_EQ(2, curve->getValue(0).m41());
+    EXPECT_FLOAT_EQ(3, curve->getValue(0.5).m41());
+    EXPECT_FLOAT_EQ(4, curve->getValue(1).m41());
+    EXPECT_FLOAT_EQ(6, curve->getValue(1.5).m41());
+    EXPECT_FLOAT_EQ(8, curve->getValue(2).m41());
+    EXPECT_FLOAT_EQ(8, curve->getValue(3).m41());
+}
+
+// Tests that a transform animation with multiple keys at a given time works sanely.
+TEST(WebTransformAnimationCurveTest, RepeatedTransformKeyTimes)
+{
+    // A step function.
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(4, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(4, 0, 0);
+    WebKit::WebTransformOperations operations3;
+    operations3.appendTranslate(6, 0, 0);
+    WebKit::WebTransformOperations operations4;
+    operations4.appendTranslate(6, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebTransformKeyframe(1, operations3), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebTransformKeyframe(2, operations4), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    EXPECT_FLOAT_EQ(4, curve->getValue(-1).m41());
+    EXPECT_FLOAT_EQ(4, curve->getValue(0).m41());
+    EXPECT_FLOAT_EQ(4, curve->getValue(0.5).m41());
+
+    // There is a discontinuity at 1. Any value between 4 and 6 is valid.
+    WebTransformationMatrix value = curve->getValue(1);
+    EXPECT_TRUE(value.m41() >= 4 && value.m41() <= 6);
+
+    EXPECT_FLOAT_EQ(6, curve->getValue(1.5).m41());
+    EXPECT_FLOAT_EQ(6, curve->getValue(2).m41());
+    EXPECT_FLOAT_EQ(6, curve->getValue(3).m41());
+}
+
+// Tests that the keyframes may be added out of order.
+TEST(WebTransformAnimationCurveTest, UnsortedKeyframes)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(2, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(4, 0, 0);
+    WebKit::WebTransformOperations operations3;
+    operations3.appendTranslate(8, 0, 0);
+    curve->add(WebTransformKeyframe(2, operations3), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebTransformKeyframe(0, operations1), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    EXPECT_FLOAT_EQ(2, curve->getValue(-1).m41());
+    EXPECT_FLOAT_EQ(2, curve->getValue(0).m41());
+    EXPECT_FLOAT_EQ(3, curve->getValue(0.5).m41());
+    EXPECT_FLOAT_EQ(4, curve->getValue(1).m41());
+    EXPECT_FLOAT_EQ(6, curve->getValue(1.5).m41());
+    EXPECT_FLOAT_EQ(8, curve->getValue(2).m41());
+    EXPECT_FLOAT_EQ(8, curve->getValue(3).m41());
+}
+
+// Tests that a cubic bezier timing function works as expected.
+TEST(WebTransformAnimationCurveTest, CubicBezierTimingFunction)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(0, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(1, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1), 0.25, 0, 0.75, 1);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+    EXPECT_FLOAT_EQ(0, curve->getValue(0).m41());
+    EXPECT_LT(0, curve->getValue(0.25).m41());
+    EXPECT_GT(0.25, curve->getValue(0.25).m41());
+    EXPECT_FLOAT_EQ(0.5, curve->getValue(0.5).m41());
+    EXPECT_LT(0.75, curve->getValue(0.75).m41());
+    EXPECT_GT(1, curve->getValue(0.75).m41());
+    EXPECT_FLOAT_EQ(1, curve->getValue(1).m41());
+}
+
+// Tests that an ease timing function works as expected.
+TEST(WebTransformAnimationCurveTest, EaseTimingFunction)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(0, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(1, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1), WebAnimationCurve::TimingFunctionTypeEase);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCEaseTimingFunction::create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->getValue(time), curve->getValue(time).m41());
+    }
+}
+
+// Tests using a linear timing function.
+TEST(WebTransformAnimationCurveTest, LinearTimingFunction)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(0, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(1, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(time, curve->getValue(time).m41());
+    }
+}
+
+// Tests that an ease in timing function works as expected.
+TEST(WebTransformAnimationCurveTest, EaseInTimingFunction)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(0, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(1, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1), WebAnimationCurve::TimingFunctionTypeEaseIn);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCEaseInTimingFunction::create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->getValue(time), curve->getValue(time).m41());
+    }
+}
+
+// Tests that an ease in timing function works as expected.
+TEST(WebTransformAnimationCurveTest, EaseOutTimingFunction)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(0, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(1, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1), WebAnimationCurve::TimingFunctionTypeEaseOut);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCEaseOutTimingFunction::create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->getValue(time), curve->getValue(time).m41());
+    }
+}
+
+// Tests that an ease in timing function works as expected.
+TEST(WebTransformAnimationCurveTest, EaseInOutTimingFunction)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(0, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(1, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1), WebAnimationCurve::TimingFunctionTypeEaseInOut);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCEaseInOutTimingFunction::create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->getValue(time), curve->getValue(time).m41());
+    }
+}
+
+// Tests that an ease in timing function works as expected.
+TEST(WebTransformAnimationCurveTest, CustomBezierTimingFunction)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    double x1 = 0.3;
+    double y1 = 0.2;
+    double x2 = 0.8;
+    double y2 = 0.7;
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(0, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(1, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1), x1, y1, x2, y2);
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCCubicBezierTimingFunction::create(x1, y1, x2, y2));
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->getValue(time), curve->getValue(time).m41());
+    }
+}
+
+// Tests that the default timing function is indeed ease.
+TEST(WebTransformAnimationCurveTest, DefaultTimingFunction)
+{
+    OwnPtr<WebTransformAnimationCurve> curve = adoptPtr(WebTransformAnimationCurve::create());
+    WebKit::WebTransformOperations operations1;
+    operations1.appendTranslate(0, 0, 0);
+    WebKit::WebTransformOperations operations2;
+    operations2.appendTranslate(1, 0, 0);
+    curve->add(WebTransformKeyframe(0, operations1));
+    curve->add(WebTransformKeyframe(1, operations2), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCEaseTimingFunction::create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->getValue(time), curve->getValue(time).m41());
+    }
+}
+
+} // namespace