[CRD iOS] Move UI stuff into a subdirectory

remoting/client/desktop_viewport_unittest.cc

-// Copyright 2017 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 "remoting/client/desktop_viewport.h"
-
-#include "base/bind.h"
-#include "base/location.h"
-#include "base/strings/stringprintf.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace remoting {
-
-namespace {
-
-const float EPSILON = 0.001f;
-
-}  // namespace
-
-class DesktopViewportTest : public testing::Test {
- public:
-  void SetUp() override;
-  void TearDown() override;
-
- protected:
-  void AssertTransformationReceived(const tracked_objects::Location& from_here,
-                                    float scale,
-                                    float offset_x,
-                                    float offset_y);
-
-  ViewMatrix ReleaseReceivedTransformation();
-
-  DesktopViewport viewport_;
-
- private:
-  void OnTransformationChanged(const ViewMatrix& matrix);
-
-  ViewMatrix received_transformation_;
-};
-
-void DesktopViewportTest::SetUp() {
-  viewport_.RegisterOnTransformationChangedCallback(
-      base::Bind(&DesktopViewportTest::OnTransformationChanged,
-                 base::Unretained(this)),
-      true);
-}
-
-void DesktopViewportTest::TearDown() {
-  ASSERT_TRUE(received_transformation_.IsEmpty());
-}
-
-void DesktopViewportTest::AssertTransformationReceived(
-    const tracked_objects::Location& from_here,
-    float scale,
-    float offset_x,
-    float offset_y) {
-  ASSERT_FALSE(received_transformation_.IsEmpty())
-      << "Matrix has not been received yet."
-      << "Location: " << from_here.ToString();
-  ViewMatrix expected(scale, {offset_x, offset_y});
-  std::array<float, 9> expected_array = expected.ToMatrixArray();
-  std::array<float, 9> actual_array = received_transformation_.ToMatrixArray();
-
-  for (int i = 0; i < 9; i++) {
-    float diff = expected_array[i] - actual_array[i];
-    ASSERT_TRUE(diff > -EPSILON && diff < EPSILON)
-        << "Matrix doesn't match. \n"
-        << base::StringPrintf("Expected scale: %f, offset: (%f, %f)\n",
-                              expected_array[0], expected_array[2],
-                              expected_array[5])
-        << base::StringPrintf("Actual scale: %f, offset: (%f, %f)\n",
-                              actual_array[0], actual_array[2], actual_array[5])
-        << "Location: " << from_here.ToString();
-  }
-
-  received_transformation_ = ViewMatrix();
-}
-
-ViewMatrix DesktopViewportTest::ReleaseReceivedTransformation() {
-  EXPECT_FALSE(received_transformation_.IsEmpty());
-  ViewMatrix out = received_transformation_;
-  received_transformation_ = ViewMatrix();
-  return out;
-}
-
-void DesktopViewportTest::OnTransformationChanged(const ViewMatrix& matrix) {
-  ASSERT_TRUE(received_transformation_.IsEmpty())
-      << "Previous matrix has not been asserted.";
-  received_transformation_ = matrix;
-}
-
-TEST_F(DesktopViewportTest, TestViewportInitialization1) {
-  // VP < DP. Desktop shrinks to fit.
-  // +====+------+
-  // | VP | DP   |
-  // |    |      |
-  // +====+------+
-  viewport_.SetDesktopSize(8, 6);
-  viewport_.SetSurfaceSize(2, 3);
-  AssertTransformationReceived(FROM_HERE, 0.5f, 0.f, 0.f);
-}
-
-TEST_F(DesktopViewportTest, TestViewportInitialization2) {
-  // VP < DP. Desktop shrinks to fit.
-  // +-----------------+
-  // |       DP        |
-  // |                 |
-  // +=================+
-  // |       VP        |
-  // +=================+
-  viewport_.SetDesktopSize(8, 6);
-  viewport_.SetSurfaceSize(3, 2);
-  AssertTransformationReceived(FROM_HERE, 0.375, 0.f, 0.f);
-}
-
-TEST_F(DesktopViewportTest, TestViewportInitialization3) {
-  // VP < DP. Desktop shrinks to fit.
-  // +========+----+
-  // |  VP    | DP |
-  // +========+----+
-  viewport_.SetDesktopSize(9, 3);
-  viewport_.SetSurfaceSize(2, 1);
-  AssertTransformationReceived(FROM_HERE, 0.333f, 0.f, 0.f);
-}
-
-TEST_F(DesktopViewportTest, TestViewportInitialization4) {
-  // VP > DP. Desktop grows to fit.
-  // +====+------+
-  // | VP | DP   |
-  // |    |      |
-  // +====+------+
-  viewport_.SetDesktopSize(2, 1);
-  viewport_.SetSurfaceSize(3, 4);
-  AssertTransformationReceived(FROM_HERE, 4.f, 0.f, 0.f);
-}
-
-TEST_F(DesktopViewportTest, TestMoveDesktop) {
-  // +====+------+
-  // | VP | DP   |
-  // |    |      |
-  // +====+------+
-  viewport_.SetDesktopSize(8, 6);
-  viewport_.SetSurfaceSize(2, 3);
-  AssertTransformationReceived(FROM_HERE, 0.5f, 0.f, 0.f);
-
-  // <--- DP
-  // +------+====+
-  // | DP   | VP |
-  // |      |    |
-  // +------+====+
-  viewport_.MoveDesktop(-2.f, 0.f);
-  AssertTransformationReceived(FROM_HERE, 0.5f, -2.f, 0.f);
-
-  //      +====+
-  // +----| VP |
-  // | DP |    |
-  // |    +====+
-  // +--------+
-  // Bounces back.
-  viewport_.MoveDesktop(-1.f, 1.f);
-  AssertTransformationReceived(FROM_HERE, 0.5f, -2.f, 0.f);
-}
-
-TEST_F(DesktopViewportTest, TestMoveAndScaleDesktop) {
-  // Number in surface coordinate.
-  //
-  // +====+------+
-  // | VP | DP   |
-  // |    |      | 3
-  // +====+------+
-  //        4
-  viewport_.SetDesktopSize(8, 6);
-  viewport_.SetSurfaceSize(2, 3);
-  AssertTransformationReceived(FROM_HERE, 0.5f, 0.f, 0.f);
-
-  // Scale at pivot point (2, 3) by 1.5x.
-  // +------------------+
-  // |                  |
-  // |   +====+   DP    | 4.5
-  // |   | VP |         |
-  // |   |    |         |
-  // +---+====+---------+
-  //       2     6
-  viewport_.ScaleDesktop(2.f, 3.f, 1.5f);
-  AssertTransformationReceived(FROM_HERE, 0.75f, -1.f, -1.5f);
-
-  // Move VP to the top-right.
-  // +-------------+====+
-  // |             | VP |
-  // |     DP      |    |
-  // |             +====+ 4.5
-  // |               2  |
-  // +------------------+
-  //         6
-  viewport_.MoveDesktop(-10000.f, 10000.f);
-  AssertTransformationReceived(FROM_HERE, 0.75f, -4.f, 0.f);
-
-  // Scale at (2, 0) by 0.5x.
-  //      VP
-  //       +====+
-  //    +--+----+
-  // DP |  |    |
-  //    +--+----+
-  //       +====+
-  viewport_.ScaleDesktop(2.f, 0.f, 0.5f);
-  AssertTransformationReceived(FROM_HERE, 0.375, -1.f, 0.375f);
-
-  // Scale all the way down.
-  // +========+
-  // |   VP   |
-  // +--------+
-  // |   DP   |
-  // +--------+
-  // |        |
-  // +========+
-  viewport_.ScaleDesktop(20.f, 0.f, 0.0001f);
-  AssertTransformationReceived(FROM_HERE, 0.25f, 0.f, 0.75f);
-}
-
-TEST_F(DesktopViewportTest, TestSetViewportCenter) {
-  // Numbers in desktop coordinates.
-  //
-  // +====+------+
-  // | VP | DP   |
-  // |    |      | 6
-  // +====+------+
-  //        8
-  viewport_.SetDesktopSize(8, 6);
-  viewport_.SetSurfaceSize(2, 3);
-  AssertTransformationReceived(FROM_HERE, 0.5f, 0.f, 0.f);
-
-  //  1.6
-  // +==+--------+
-  // |VP|2.4  DP |
-  // +==+        | 6
-  // +-----------+
-  //       8
-  viewport_.ScaleDesktop(0.f, 0.f, 2.5f);
-  AssertTransformationReceived(FROM_HERE, 1.25f, 0.f, 0.f);
-
-  // Move VP to center of the desktop.
-  // +------------------+
-  // |      +1.6=+      |
-  // |      | VP |2.4   | 6
-  // |      +====+      |
-  // +------------------+
-  //          8
-  viewport_.SetViewportCenter(4.f, 3.f);
-  AssertTransformationReceived(FROM_HERE, 1.25f, -4.f, -2.25f);
-
-  // Move it out of bound and bounce it back.
-  // +------------------+
-  // |                  |
-  // |     DP           |
-  // |               +====+
-  // |               | VP |
-  // +---------------|    |
-  //                 +====+
-  viewport_.SetViewportCenter(1000.f, 1000.f);
-  AssertTransformationReceived(FROM_HERE, 1.25f, -8.f, -4.5f);
-}
-
-TEST_F(DesktopViewportTest, TestScaleDesktop) {
-  // Number in surface coordinate.
-  //
-  // +====+------+
-  // | VP | DP   |
-  // |    |      | 3
-  // +====+------+
-  //        4
-  viewport_.SetDesktopSize(8, 6);
-  viewport_.SetSurfaceSize(2, 3);
-  AssertTransformationReceived(FROM_HERE, 0.5f, 0.f, 0.f);
-
-  ViewMatrix old_transformation(0.5f, {0.f, 0.f});
-
-  ViewMatrix::Point surface_point = old_transformation.MapPoint({1.2f, 1.3f});
-
-  // Scale a little bit at a pivot point.
-  viewport_.ScaleDesktop(surface_point.x, surface_point.y, 1.1f);
-
-  ViewMatrix new_transformation = ReleaseReceivedTransformation();
-
-  // Verify the pivot point is fixed.
-  ViewMatrix::Point new_surface_point =
-      new_transformation.MapPoint({1.2f, 1.3f});
-  ASSERT_FLOAT_EQ(surface_point.x, new_surface_point.x);
-  ASSERT_FLOAT_EQ(surface_point.y, new_surface_point.y);
-
-  // Verify the scale is correct.
-  ASSERT_FLOAT_EQ(old_transformation.GetScale() * 1.1f,
-                  new_transformation.GetScale());
-}
-
-}  // namespace remoting