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 CHROME_BROWSER_CHROMEOS_DISPLAY_OVERSCAN_CALIBRATOR_H_ 6 #define CHROME_BROWSER_CHROMEOS_DISPLAY_OVERSCAN_CALIBRATOR_H_ 7 8 #include "base/basictypes.h" 9 #include "base/memory/scoped_ptr.h" 10 #include "ui/compositor/layer_delegate.h" 11 #include "ui/gfx/display.h" 12 #include "ui/gfx/insets.h" 13 #include "ui/gfx/rect.h" 14 15 namespace ui { 16 class Layer; 17 } 18 19 namespace chromeos { 20 21 // This is used to show the visible feedback to the user's operations for 22 // calibrating display overscan settings. 23 class OverscanCalibrator : public ui::LayerDelegate { 24 public: 25 OverscanCalibrator(const gfx::Display& target_display, 26 const gfx::Insets& initial_insets); 27 virtual ~OverscanCalibrator(); 28 29 // Commits the current insets data to the system. 30 void Commit(); 31 32 // Reset the overscan insets to default value. If the display has 33 // overscan, the default value is the display's default overscan 34 // value. Otherwise, the default value is the old |initial_insets_|. 35 void Reset(); 36 37 // Updates the insets and redraw the visual feedback. 38 void UpdateInsets(const gfx::Insets& insets); 39 40 const gfx::Insets& insets() const { return insets_; } 41 42 private: 43 // ui::LayerDelegate overrides: 44 virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE; 45 virtual void OnDelegatedFrameDamage( 46 const gfx::Rect& damage_rect_in_dip) OVERRIDE; 47 virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE; 48 virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE; 49 50 // The target display. 51 const gfx::Display display_; 52 53 // The current insets. 54 gfx::Insets insets_; 55 56 // The insets initially given. Stored so we can undo the insets later. 57 gfx::Insets initial_insets_; 58 59 // Whether the current insets are committed to the system or not. 60 bool committed_; 61 62 // The visualization layer for the current calibration region. 63 scoped_ptr<ui::Layer> calibration_layer_; 64 65 DISALLOW_COPY_AND_ASSIGN(OverscanCalibrator); 66 }; 67 68 } // namespace chromeos 69 70 #endif // CHROME_BROWSER_CHROMEOS_DISPLAY_OVERSCAN_CALIBRATOR_H_ 71
