root/ui/aura/test/test_screen.cc

DEFINITIONS

1. Create
2. CreateFullscreen
3. CreateHostForPrimaryDisplay
4. SetDeviceScaleFactor
5. SetDisplayRotation
6. SetUIScale
7. GetRotationTransform
8. GetUIScaleTransform
9. IsDIPEnabled
10. OnWindowBoundsChanged
11. OnWindowDestroying
12. GetCursorScreenPoint
13. GetWindowUnderCursor
14. GetWindowAtScreenPoint
15. GetNumDisplays
16. GetAllDisplays
17. GetDisplayNearestWindow
18. GetDisplayNearestPoint
19. GetDisplayMatching
20. GetPrimaryDisplay
21. AddObserver
22. RemoveObserver
23. ui_scale_

// Copyright (c) 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 "ui/aura/test/test_screen.h"

#include "base/logging.h"
#include "ui/aura/env.h"
#include "ui/aura/window.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/aura/window_tree_host.h"
#include "ui/gfx/geometry/size_conversions.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/rect_conversions.h"
#include "ui/gfx/screen.h"

namespace aura {

// static
TestScreen* TestScreen::Create() {
  // Use (0,0) because the desktop aura tests are executed in
  // native environment where the display's origin is (0,0).
  return new TestScreen(gfx::Rect(0, 0, 800, 600));
}

// static
TestScreen* TestScreen::CreateFullscreen() {
  return new TestScreen(gfx::Rect(WindowTreeHost::GetNativeScreenSize()));
}

TestScreen::~TestScreen() {
}

WindowTreeHost* TestScreen::CreateHostForPrimaryDisplay() {
  DCHECK(!host_);
  host_ = WindowTreeHost::Create(gfx::Rect(display_.GetSizeInPixel()));
  host_->window()->AddObserver(this);
  host_->InitHost();
  return host_;
}

void TestScreen::SetDeviceScaleFactor(float device_scale_factor) {
  gfx::Rect bounds_in_pixel(display_.GetSizeInPixel());
  display_.SetScaleAndBounds(device_scale_factor, bounds_in_pixel);
  host_->OnHostResized(bounds_in_pixel.size());
}

void TestScreen::SetDisplayRotation(gfx::Display::Rotation rotation) {
  display_.set_rotation(rotation);
  // TODO(oshima|mukai): Update the display_ as well.
  host_->SetTransform(GetRotationTransform() * GetUIScaleTransform());
}

void TestScreen::SetUIScale(float ui_scale) {
  ui_scale_ = ui_scale;
  gfx::Rect bounds_in_pixel(display_.GetSizeInPixel());
  gfx::Rect new_bounds = gfx::ToNearestRect(
      gfx::ScaleRect(bounds_in_pixel, 1.0f / ui_scale));
  display_.SetScaleAndBounds(display_.device_scale_factor(), new_bounds);
  host_->SetTransform(GetRotationTransform() * GetUIScaleTransform());
}

gfx::Transform TestScreen::GetRotationTransform() const {
  gfx::Transform rotate;
  float one_pixel = 1.0f / display_.device_scale_factor();
  switch (display_.rotation()) {
    case gfx::Display::ROTATE_0:
      break;
    case gfx::Display::ROTATE_90:
      rotate.Translate(display_.bounds().height() - one_pixel, 0);
      rotate.Rotate(90);
      break;
    case gfx::Display::ROTATE_270:
      rotate.Translate(0, display_.bounds().width() - one_pixel);
      rotate.Rotate(270);
      break;
    case gfx::Display::ROTATE_180:
      rotate.Translate(display_.bounds().width() - one_pixel,
                       display_.bounds().height() - one_pixel);
      rotate.Rotate(180);
      break;
  }

  return rotate;
}

gfx::Transform TestScreen::GetUIScaleTransform() const {
  gfx::Transform ui_scale;
  ui_scale.Scale(1.0f / ui_scale_, 1.0f / ui_scale_);
  return ui_scale;
}

bool TestScreen::IsDIPEnabled() {
  return true;
}

void TestScreen::OnWindowBoundsChanged(
    Window* window, const gfx::Rect& old_bounds, const gfx::Rect& new_bounds) {
  DCHECK_EQ(host_->window(), window);
  display_.SetSize(gfx::ToFlooredSize(
      gfx::ScaleSize(new_bounds.size(), display_.device_scale_factor())));
}

void TestScreen::OnWindowDestroying(Window* window) {
  if (host_->window() == window)
    host_ = NULL;
}

gfx::Point TestScreen::GetCursorScreenPoint() {
  return Env::GetInstance()->last_mouse_location();
}

gfx::NativeWindow TestScreen::GetWindowUnderCursor() {
  return GetWindowAtScreenPoint(GetCursorScreenPoint());
}

gfx::NativeWindow TestScreen::GetWindowAtScreenPoint(const gfx::Point& point) {
  return host_->window()->GetTopWindowContainingPoint(point);
}

int TestScreen::GetNumDisplays() const {
  return 1;
}

std::vector<gfx::Display> TestScreen::GetAllDisplays() const {
  return std::vector<gfx::Display>(1, display_);
}

gfx::Display TestScreen::GetDisplayNearestWindow(
    gfx::NativeWindow window) const {
  return display_;
}

gfx::Display TestScreen::GetDisplayNearestPoint(const gfx::Point& point) const {
  return display_;
}

gfx::Display TestScreen::GetDisplayMatching(const gfx::Rect& match_rect) const {
  return display_;
}

gfx::Display TestScreen::GetPrimaryDisplay() const {
  return display_;
}

void TestScreen::AddObserver(gfx::DisplayObserver* observer) {
}

void TestScreen::RemoveObserver(gfx::DisplayObserver* observer) {
}

TestScreen::TestScreen(const gfx::Rect& screen_bounds)
    : host_(NULL),
      ui_scale_(1.0f) {
  static int64 synthesized_display_id = 2000;
  display_.set_id(synthesized_display_id++);
  display_.SetScaleAndBounds(1.0f, screen_bounds);
}

}  // namespace aura