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embedded_view_params_unittests.cc
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// Copyright 2013 The Flutter 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 "flutter/flow/embedded_views.h"
#include "flutter/fml/logging.h"
#include "gtest/gtest.h"
namespace flutter {
namespace testing {
TEST(EmbeddedViewParams, GetBoundingRectAfterMutationsWithNoMutations) {
MutatorsStack stack;
SkMatrix matrix;
EmbeddedViewParams params(matrix, SkSize::Make(1, 1), stack);
const SkRect& rect = params.finalBoundingRect();
ASSERT_TRUE(SkScalarNearlyEqual(rect.x(), 0));
ASSERT_TRUE(SkScalarNearlyEqual(rect.y(), 0));
ASSERT_TRUE(SkScalarNearlyEqual(rect.width(), 1));
ASSERT_TRUE(SkScalarNearlyEqual(rect.height(), 1));
}
TEST(EmbeddedViewParams, GetBoundingRectAfterMutationsWithScale) {
MutatorsStack stack;
SkMatrix matrix = SkMatrix::Scale(2, 2);
stack.PushTransform(matrix);
EmbeddedViewParams params(matrix, SkSize::Make(1, 1), stack);
const SkRect& rect = params.finalBoundingRect();
ASSERT_TRUE(SkScalarNearlyEqual(rect.x(), 0));
ASSERT_TRUE(SkScalarNearlyEqual(rect.y(), 0));
ASSERT_TRUE(SkScalarNearlyEqual(rect.width(), 2));
ASSERT_TRUE(SkScalarNearlyEqual(rect.height(), 2));
}
TEST(EmbeddedViewParams, GetBoundingRectAfterMutationsWithTranslate) {
MutatorsStack stack;
SkMatrix matrix = SkMatrix::Translate(1, 1);
stack.PushTransform(matrix);
EmbeddedViewParams params(matrix, SkSize::Make(1, 1), stack);
const SkRect& rect = params.finalBoundingRect();
ASSERT_TRUE(SkScalarNearlyEqual(rect.x(), 1));
ASSERT_TRUE(SkScalarNearlyEqual(rect.y(), 1));
ASSERT_TRUE(SkScalarNearlyEqual(rect.width(), 1));
ASSERT_TRUE(SkScalarNearlyEqual(rect.height(), 1));
}
TEST(EmbeddedViewParams, GetBoundingRectAfterMutationsWithRotation90) {
MutatorsStack stack;
SkMatrix matrix;
matrix.setRotate(90);
stack.PushTransform(matrix);
EmbeddedViewParams params(matrix, SkSize::Make(1, 1), stack);
const SkRect& rect = params.finalBoundingRect();
ASSERT_TRUE(SkScalarNearlyEqual(rect.x(), -1));
ASSERT_TRUE(SkScalarNearlyEqual(rect.y(), 0));
ASSERT_TRUE(SkScalarNearlyEqual(rect.width(), 1));
ASSERT_TRUE(SkScalarNearlyEqual(rect.height(), 1));
}
TEST(EmbeddedViewParams, GetBoundingRectAfterMutationsWithRotation45) {
MutatorsStack stack;
SkMatrix matrix;
matrix.setRotate(45);
stack.PushTransform(matrix);
EmbeddedViewParams params(matrix, SkSize::Make(1, 1), stack);
const SkRect& rect = params.finalBoundingRect();
ASSERT_TRUE(SkScalarNearlyEqual(rect.x(), -sqrt(2) / 2));
ASSERT_TRUE(SkScalarNearlyEqual(rect.y(), 0));
ASSERT_TRUE(SkScalarNearlyEqual(rect.width(), sqrt(2)));
ASSERT_TRUE(SkScalarNearlyEqual(rect.height(), sqrt(2)));
}
TEST(EmbeddedViewParams,
GetBoundingRectAfterMutationsWithTranslateScaleAndRotation) {
SkMatrix matrix = SkMatrix::Translate(2, 2);
matrix.preScale(3, 3);
matrix.preRotate(90);
MutatorsStack stack;
stack.PushTransform(matrix);
EmbeddedViewParams params(matrix, SkSize::Make(1, 1), stack);
const SkRect& rect = params.finalBoundingRect();
ASSERT_TRUE(SkScalarNearlyEqual(rect.x(), -1));
ASSERT_TRUE(SkScalarNearlyEqual(rect.y(), 2));
ASSERT_TRUE(SkScalarNearlyEqual(rect.width(), 3));
ASSERT_TRUE(SkScalarNearlyEqual(rect.height(), 3));
}
} // namespace testing
} // namespace flutter