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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef UI_AURA_TEST_TEST_SCREEN_H_
      6 #define UI_AURA_TEST_TEST_SCREEN_H_
      7 
      8 #include "base/compiler_specific.h"
      9 #include "ui/aura/window_observer.h"
     10 #include "ui/gfx/display.h"
     11 #include "ui/gfx/screen.h"
     12 
     13 namespace gfx {
     14 class Insets;
     15 class Rect;
     16 class Transform;
     17 }
     18 
     19 namespace aura {
     20 class Window;
     21 class WindowTreeHost;
     22 
     23 // A minimal, testing Aura implementation of gfx::Screen.
     24 class TestScreen : public gfx::Screen,
     25                    public WindowObserver {
     26  public:
     27   // Creates a gfx::Screen of the specified size. If no size is specified, then
     28   // creates a 800x600 screen. |size| is in physical pixels.
     29   static TestScreen* Create(const gfx::Size& size);
     30   // Creates a TestScreen that uses fullscreen for the display.
     31   static TestScreen* CreateFullscreen();
     32   virtual ~TestScreen();
     33 
     34   WindowTreeHost* CreateHostForPrimaryDisplay();
     35 
     36   void SetDeviceScaleFactor(float device_scale_fator);
     37   void SetDisplayRotation(gfx::Display::Rotation rotation);
     38   void SetUIScale(float ui_scale);
     39   void SetWorkAreaInsets(const gfx::Insets& insets);
     40 
     41  protected:
     42   gfx::Transform GetRotationTransform() const;
     43   gfx::Transform GetUIScaleTransform() const;
     44 
     45   // WindowObserver overrides:
     46   virtual void OnWindowBoundsChanged(Window* window,
     47                                      const gfx::Rect& old_bounds,
     48                                      const gfx::Rect& new_bounds) OVERRIDE;
     49   virtual void OnWindowDestroying(Window* window) OVERRIDE;
     50 
     51   // gfx::Screen overrides:
     52   virtual bool IsDIPEnabled() OVERRIDE;
     53   virtual gfx::Point GetCursorScreenPoint() OVERRIDE;
     54   virtual gfx::NativeWindow GetWindowUnderCursor() OVERRIDE;
     55   virtual gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point)
     56       OVERRIDE;
     57   virtual int GetNumDisplays() const OVERRIDE;
     58   virtual std::vector<gfx::Display> GetAllDisplays() const OVERRIDE;
     59   virtual gfx::Display GetDisplayNearestWindow(
     60       gfx::NativeView view) const OVERRIDE;
     61   virtual gfx::Display GetDisplayNearestPoint(
     62       const gfx::Point& point) const OVERRIDE;
     63   virtual gfx::Display GetDisplayMatching(
     64       const gfx::Rect& match_rect) const OVERRIDE;
     65   virtual gfx::Display GetPrimaryDisplay() const OVERRIDE;
     66   virtual void AddObserver(gfx::DisplayObserver* observer) OVERRIDE;
     67   virtual void RemoveObserver(gfx::DisplayObserver* observer) OVERRIDE;
     68 
     69  private:
     70   explicit TestScreen(const gfx::Rect& screen_bounds);
     71 
     72   aura::WindowTreeHost* host_;
     73 
     74   gfx::Display display_;
     75 
     76   float ui_scale_;
     77 
     78   DISALLOW_COPY_AND_ASSIGN(TestScreen);
     79 };
     80 
     81 }  // namespace aura
     82 
     83 #endif  // UI_AURA_TEST_TEST_SCREEN_H_
     84