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_NATIVE_THEME_NATIVE_THEME_AURA_H_ 6 #define UI_NATIVE_THEME_NATIVE_THEME_AURA_H_ 7 8 #include "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "ui/native_theme/fallback_theme.h" 11 12 namespace gfx { 13 class NineImagePainter; 14 } 15 16 namespace ui { 17 18 // Aura implementation of native theme support. 19 class NATIVE_THEME_EXPORT NativeThemeAura : public FallbackTheme { 20 public: 21 static NativeThemeAura* instance(); 22 23 protected: 24 NativeThemeAura(); 25 virtual ~NativeThemeAura(); 26 27 // Overridden from NativeThemeBase: 28 virtual void PaintMenuPopupBackground( 29 SkCanvas* canvas, 30 const gfx::Size& size, 31 const MenuBackgroundExtraParams& menu_background) const OVERRIDE; 32 virtual void PaintMenuItemBackground( 33 SkCanvas* canvas, 34 State state, 35 const gfx::Rect& rect, 36 const MenuListExtraParams& menu_list) const OVERRIDE; 37 virtual void PaintArrowButton(SkCanvas* gc, 38 const gfx::Rect& rect, 39 Part direction, 40 State state) const OVERRIDE; 41 virtual void PaintScrollbarTrack( 42 SkCanvas* sk_canvas, 43 Part part, 44 State state, 45 const ScrollbarTrackExtraParams& extra_params, 46 const gfx::Rect& rect) const OVERRIDE; 47 virtual void PaintScrollbarThumb(SkCanvas* sk_canvas, 48 Part part, 49 State state, 50 const gfx::Rect& rect) const OVERRIDE; 51 virtual void PaintScrollbarCorner(SkCanvas* canvas, 52 State state, 53 const gfx::Rect& rect) const OVERRIDE; 54 55 virtual void PaintScrollbarThumbStateTransition(SkCanvas* canvas, 56 State startState, 57 State endState, 58 double progress, 59 const gfx::Rect& rect) const 60 OVERRIDE; 61 62 // Returns the NineImagePainter used to paint the specified state, creating if 63 // necessary. If no image is provided for the specified state the normal state 64 // images are used. 65 gfx::NineImagePainter* GetOrCreatePainter( 66 const int image_ids[kNumStates][9], 67 State state, 68 scoped_ptr<gfx::NineImagePainter> painters[kNumStates]) const; 69 70 // Paints |painter| into the canvas using |rect|. 71 void PaintPainter(gfx::NineImagePainter* painter, 72 SkCanvas* sk_canvas, 73 const gfx::Rect& rect) const; 74 75 mutable scoped_ptr<gfx::NineImagePainter> scrollbar_track_painter_; 76 77 mutable scoped_ptr<gfx::NineImagePainter> 78 scrollbar_thumb_painters_[kNumStates]; 79 80 mutable scoped_ptr<gfx::NineImagePainter> 81 scrollbar_arrow_button_painters_[kNumStates]; 82 83 private: 84 struct DualPainter { 85 // For overlay scrollbar thumbs, fill and stroke are controlled separately, 86 // and each state is achieved by painting with different opacity. This 87 // struct bundles information of painter generated using assets and alpha 88 // value associated with each state, so that a DualPainter for overlay 89 // scrollbar thumb would only need state as input to paint correctly. 90 DualPainter(scoped_ptr<gfx::NineImagePainter> fill_painter, 91 const uint8 fill_alphas[kNumStates], 92 scoped_ptr<gfx::NineImagePainter> stroke_painter, 93 const uint8 stroke_alphas[kNumStates]); 94 ~DualPainter(); 95 96 scoped_ptr<gfx::NineImagePainter> fill_painter; 97 const uint8* const fill_alphas; 98 scoped_ptr<gfx::NineImagePainter> stroke_painter; 99 const uint8* const stroke_alphas; 100 }; 101 102 // Returns DualPainter from specific fill and stroke, creating if necessary. 103 scoped_ptr<DualPainter> CreateDualPainter( 104 const int fill_image_ids[9], 105 const uint8 fill_alphas[kNumStates], 106 const int stroke_image_ids[9], 107 const uint8 stroke_alphas[kNumStates]) const; 108 109 // Paints |dualPainter| into the canvas using |rect| and specific alpha. 110 void PaintDualPainter(DualPainter* dual_painter, 111 SkCanvas* sk_canvas, 112 const gfx::Rect& rect, 113 State state) const; 114 115 void PaintDualPainterTransition(DualPainter* dual_painter, 116 SkCanvas* sk_canvas, 117 const gfx::Rect& rect, 118 State startState, 119 State endState, 120 double progress) const; 121 122 mutable scoped_ptr<DualPainter> scrollbar_overlay_thumb_painter_; 123 124 DISALLOW_COPY_AND_ASSIGN(NativeThemeAura); 125 }; 126 127 } // namespace ui 128 129 #endif // UI_NATIVE_THEME_NATIVE_THEME_AURA_H_ 130