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;
  DlMatrix matrix;
 
  EmbeddedViewParams params(matrix, DlSize(1, 1), stack);
  EXPECT_EQ(params.finalBoundingRect(), DlRect::MakeXYWH(0, 0, 1, 1));
}
 
TEST(EmbeddedViewParams, GetBoundingRectAfterMutationsWithScale) {
  MutatorsStack stack;
  DlMatrix matrix = DlMatrix::MakeScale({2, 2, 1});
  stack.PushTransform(matrix);
 
  EmbeddedViewParams params(matrix, DlSize(1, 1), stack);
  EXPECT_EQ(params.finalBoundingRect(), DlRect::MakeXYWH(0, 0, 2, 2));
}
 
TEST(EmbeddedViewParams, GetBoundingRectAfterMutationsWithTranslate) {
  MutatorsStack stack;
  DlMatrix matrix = DlMatrix::MakeTranslation({1, 1});
  stack.PushTransform(matrix);
 
  EmbeddedViewParams params(matrix, DlSize(1, 1), stack);
  EXPECT_EQ(params.finalBoundingRect(), DlRect::MakeXYWH(1, 1, 1, 1));
}
 
TEST(EmbeddedViewParams, GetBoundingRectAfterMutationsWithRotation90) {
  MutatorsStack stack;
  DlMatrix matrix = DlMatrix::MakeRotationZ(DlDegrees(90));
  stack.PushTransform(matrix);
 
  EmbeddedViewParams params(matrix, DlSize(1, 1), stack);
  EXPECT_EQ(params.finalBoundingRect(), DlRect::MakeXYWH(-1, 0, 1, 1));
}
 
TEST(EmbeddedViewParams, GetBoundingRectAfterMutationsWithRotation45) {
  MutatorsStack stack;
  DlMatrix matrix = DlMatrix::MakeRotationZ(DlDegrees(45));
  stack.PushTransform(matrix);
 
  EmbeddedViewParams params(matrix, DlSize(1, 1), stack);
  EXPECT_EQ(params.finalBoundingRect(),
            DlRect::MakeXYWH(-sqrt(2) / 2, 0, sqrt(2), sqrt(2)));
}
 
TEST(EmbeddedViewParams,
     GetBoundingRectAfterMutationsWithTranslateScaleAndRotation) {
  DlMatrix matrix = DlMatrix::MakeTranslation({2, 2}) *
                    DlMatrix::MakeScale({3, 3, 1}) *
                    DlMatrix::MakeRotationZ(DlDegrees(90));
 
  MutatorsStack stack;
  stack.PushTransform(matrix);
 
  EmbeddedViewParams params(matrix, DlSize(1, 1), stack);
  EXPECT_EQ(params.finalBoundingRect(), DlRect::MakeXYWH(-1, 2, 3, 3));
}
 
}  // namespace testing
}  // namespace flutter