ui/gfx/test/test_screen.h

// Copyright 2015 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 <vector>

#include "base/macros.h"
#include "ui/gfx/display.h"
#include "ui/gfx/screen.h"

namespace gfx {
namespace test {

// A dummy implementation of gfx::Screen that contains a single gfx::Display
// only. The contained gfx::Display can be accessed and modified via
// TestScreen::display().
//
// NOTE: Adding and removing gfx::DisplayOberver's are no-ops and observers will
// NOT be notified ever.
class TestScreen : public gfx::Screen {
 public:
  TestScreen();
  ~TestScreen() override;

  gfx::Display* display() { return &display_; }

  // gfx::Screen:
  gfx::Point GetCursorScreenPoint() override;
  gfx::NativeWindow GetWindowUnderCursor() override;
  gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) override;
  int GetNumDisplays() const override;
  std::vector<gfx::Display> GetAllDisplays() const override;
  gfx::Display GetDisplayNearestWindow(gfx::NativeView view) const override;
  gfx::Display GetDisplayNearestPoint(const gfx::Point& point) const override;
  gfx::Display GetDisplayMatching(const gfx::Rect& match_rect) const override;
  gfx::Display GetPrimaryDisplay() const override;
  void AddObserver(gfx::DisplayObserver* observer) override;
  void RemoveObserver(gfx::DisplayObserver* observer) override;

 private:
  // The only display.
  gfx::Display display_;

  DISALLOW_COPY_AND_ASSIGN(TestScreen);
};

}  // namespace test
}  // namespace gfx