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_BASE_H_ 6 #define UI_NATIVE_THEME_NATIVE_THEME_BASE_H_ 7 8 #include "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "skia/ext/platform_canvas.h" 11 #include "ui/native_theme/native_theme.h" 12 13 namespace gfx { 14 class ImageSkia; 15 class Rect; 16 class Size; 17 } 18 19 namespace ui { 20 21 // Theme support for non-Windows toolkits. 22 class NATIVE_THEME_EXPORT NativeThemeBase : public NativeTheme { 23 public: 24 // NativeTheme implementation: 25 virtual gfx::Size GetPartSize(Part part, 26 State state, 27 const ExtraParams& extra) const OVERRIDE; 28 virtual void Paint(SkCanvas* canvas, 29 Part part, 30 State state, 31 const gfx::Rect& rect, 32 const ExtraParams& extra) const OVERRIDE; 33 34 protected: 35 NativeThemeBase(); 36 virtual ~NativeThemeBase(); 37 38 // Draw the arrow. Used by scrollbar and inner spin button. 39 virtual void PaintArrowButton( 40 SkCanvas* gc, 41 const gfx::Rect& rect, 42 Part direction, 43 State state) const; 44 // Paint the scrollbar track. Done before the thumb so that it can contain 45 // alpha. 46 virtual void PaintScrollbarTrack( 47 SkCanvas* canvas, 48 Part part, 49 State state, 50 const ScrollbarTrackExtraParams& extra_params, 51 const gfx::Rect& rect) const; 52 // Draw the scrollbar thumb over the track. 53 virtual void PaintScrollbarThumb( 54 SkCanvas* canvas, 55 Part part, 56 State state, 57 const gfx::Rect& rect) const; 58 59 virtual void PaintCheckbox( 60 SkCanvas* canvas, 61 State state, 62 const gfx::Rect& rect, 63 const ButtonExtraParams& button) const; 64 65 virtual void PaintRadio( 66 SkCanvas* canvas, 67 State state, 68 const gfx::Rect& rect, 69 const ButtonExtraParams& button) const; 70 71 virtual void PaintButton( 72 SkCanvas* canvas, 73 State state, 74 const gfx::Rect& rect, 75 const ButtonExtraParams& button) const; 76 77 virtual void PaintTextField( 78 SkCanvas* canvas, 79 State state, 80 const gfx::Rect& rect, 81 const TextFieldExtraParams& text) const; 82 83 virtual void PaintMenuList( 84 SkCanvas* canvas, 85 State state, 86 const gfx::Rect& rect, 87 const MenuListExtraParams& menu_list) const; 88 89 virtual void PaintMenuPopupBackground( 90 SkCanvas* canvas, 91 const gfx::Size& size, 92 const MenuBackgroundExtraParams& menu_background) const; 93 94 virtual void PaintMenuItemBackground( 95 SkCanvas* canvas, 96 State state, 97 const gfx::Rect& rect, 98 const MenuListExtraParams& menu_list) const; 99 100 virtual void PaintSliderTrack( 101 SkCanvas* canvas, 102 State state, 103 const gfx::Rect& rect, 104 const SliderExtraParams& slider) const; 105 106 virtual void PaintSliderThumb( 107 SkCanvas* canvas, 108 State state, 109 const gfx::Rect& rect, 110 const SliderExtraParams& slider) const; 111 112 virtual void PaintInnerSpinButton( 113 SkCanvas* canvas, 114 State state, 115 const gfx::Rect& rect, 116 const InnerSpinButtonExtraParams& spin_button) const; 117 118 virtual void PaintProgressBar( 119 SkCanvas* canvas, 120 State state, 121 const gfx::Rect& rect, 122 const ProgressBarExtraParams& progress_bar) const; 123 124 protected: set_scrollbar_button_length(unsigned int length)125 void set_scrollbar_button_length(unsigned int length) { 126 scrollbar_button_length_ = length; 127 } 128 129 bool IntersectsClipRectInt(SkCanvas* canvas, 130 int x, int y, int w, int h) const; 131 132 void DrawImageInt(SkCanvas* canvas, const gfx::ImageSkia& image, 133 int src_x, int src_y, int src_w, int src_h, 134 int dest_x, int dest_y, int dest_w, int dest_h) const; 135 136 void DrawTiledImage(SkCanvas* canvas, 137 const gfx::ImageSkia& image, 138 int src_x, int src_y, 139 float tile_scale_x, float tile_scale_y, 140 int dest_x, int dest_y, int w, int h) const; 141 142 SkColor SaturateAndBrighten(SkScalar* hsv, 143 SkScalar saturate_amount, 144 SkScalar brighten_amount) const; 145 private: 146 void DrawVertLine(SkCanvas* canvas, 147 int x, 148 int y1, 149 int y2, 150 const SkPaint& paint) const; 151 void DrawHorizLine(SkCanvas* canvas, 152 int x1, 153 int x2, 154 int y, 155 const SkPaint& paint) const; 156 void DrawBox(SkCanvas* canvas, 157 const gfx::Rect& rect, 158 const SkPaint& paint) const; 159 SkScalar Clamp(SkScalar value, 160 SkScalar min, 161 SkScalar max) const; 162 SkColor OutlineColor(SkScalar* hsv1, SkScalar* hsv2) const; 163 164 // Paint the common parts of the checkboxes and radio buttons. 165 // borderRadius specifies how rounded the corners should be. 166 SkRect PaintCheckboxRadioCommon( 167 SkCanvas* canvas, 168 State state, 169 const gfx::Rect& rect, 170 const SkScalar borderRadius) const; 171 172 unsigned int scrollbar_width_; 173 unsigned int scrollbar_button_length_; 174 175 DISALLOW_COPY_AND_ASSIGN(NativeThemeBase); 176 }; 177 178 } // namespace ui 179 180 #endif // UI_NATIVE_THEME_NATIVE_THEME_BASE_H_ 181