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| 1 // Copyright (c) 2011 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 #include "views/controls/scrollbar/native_scroll_bar_views.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "ui/base/keycodes/keyboard_codes.h" | |
| 9 #include "ui/gfx/canvas.h" | |
| 10 #include "ui/gfx/canvas_skia.h" | |
| 11 #include "ui/gfx/path.h" | |
| 12 #include "views/controls/button/custom_button.h" | |
| 13 #include "views/controls/focusable_border.h" | |
| 14 #include "views/controls/scrollbar/native_scroll_bar.h" | |
| 15 #include "views/controls/scrollbar/scroll_bar.h" | |
| 16 #include "views/controls/scrollbar/base_scroll_bar_button.h" | |
| 17 #include "views/controls/scrollbar/base_scroll_bar_thumb.h" | |
| 18 | |
| 19 namespace views { | |
| 20 | |
| 21 namespace { | |
| 22 | |
| 23 // Wrapper for the scroll buttons. | |
| 24 class ScrollBarButton : public BaseScrollBarButton { | |
| 25 public: | |
| 26 enum Type { | |
| 27 UP, | |
| 28 DOWN, | |
| 29 LEFT, | |
| 30 RIGHT, | |
| 31 }; | |
| 32 | |
| 33 ScrollBarButton(ButtonListener* listener, Type type); | |
| 34 virtual ~ScrollBarButton(); | |
| 35 | |
| 36 virtual gfx::Size GetPreferredSize() OVERRIDE; | |
| 37 | |
| 38 protected: | |
| 39 virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE; | |
| 40 | |
| 41 private: | |
| 42 gfx::NativeTheme::ExtraParams GetNativeThemeParams() const; | |
| 43 gfx::NativeTheme::Part GetNativeThemePart() const; | |
| 44 gfx::NativeTheme::State GetNativeThemeState() const; | |
| 45 | |
| 46 Type type_; | |
| 47 }; | |
| 48 | |
| 49 // Wrapper for the scroll thumb | |
| 50 class ScrollBarThumb : public BaseScrollBarThumb { | |
| 51 public: | |
| 52 explicit ScrollBarThumb(BaseScrollBar* scroll_bar); | |
| 53 virtual ~ScrollBarThumb(); | |
| 54 | |
| 55 virtual gfx::Size GetPreferredSize() OVERRIDE; | |
| 56 | |
| 57 protected: | |
| 58 virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE; | |
| 59 | |
| 60 private: | |
| 61 gfx::NativeTheme::ExtraParams GetNativeThemeParams() const; | |
| 62 gfx::NativeTheme::Part GetNativeThemePart() const; | |
| 63 gfx::NativeTheme::State GetNativeThemeState() const; | |
| 64 | |
| 65 ScrollBar* scroll_bar_; | |
| 66 }; | |
| 67 | |
| 68 ///////////////////////////////////////////////////////////////////////////// | |
| 69 // ScrollBarButton | |
| 70 | |
| 71 ScrollBarButton::ScrollBarButton( | |
| 72 ButtonListener* listener, | |
| 73 Type type) | |
| 74 : BaseScrollBarButton(listener), | |
| 75 type_(type) { | |
| 76 } | |
| 77 | |
| 78 ScrollBarButton::~ScrollBarButton() { | |
| 79 } | |
| 80 | |
| 81 gfx::Size ScrollBarButton::GetPreferredSize() { | |
| 82 const gfx::NativeTheme* native_theme = gfx::NativeTheme::instance(); | |
| 83 return native_theme->GetPartSize(GetNativeThemePart(), | |
| 84 GetNativeThemeState(), | |
| 85 GetNativeThemeParams()); | |
| 86 } | |
| 87 | |
| 88 void ScrollBarButton::OnPaint(gfx::Canvas* canvas) { | |
| 89 const gfx::NativeTheme* native_theme = gfx::NativeTheme::instance(); | |
| 90 gfx::Rect bounds; | |
| 91 bounds.set_size(GetPreferredSize()); | |
| 92 | |
| 93 native_theme->Paint(canvas->AsCanvasSkia(), | |
| 94 GetNativeThemePart(), | |
| 95 GetNativeThemeState(), | |
| 96 bounds, | |
| 97 GetNativeThemeParams()); | |
| 98 } | |
| 99 | |
| 100 gfx::NativeTheme::ExtraParams | |
| 101 ScrollBarButton::GetNativeThemeParams() const { | |
| 102 gfx::NativeTheme::ExtraParams params; | |
| 103 | |
| 104 switch (state_) { | |
| 105 case CustomButton::BS_HOT: | |
| 106 params.scrollbar_arrow.is_hovering = true; | |
| 107 break; | |
| 108 default: | |
| 109 params.scrollbar_arrow.is_hovering = false; | |
| 110 break; | |
| 111 } | |
| 112 | |
| 113 return params; | |
| 114 } | |
| 115 | |
| 116 gfx::NativeTheme::Part | |
| 117 ScrollBarButton::GetNativeThemePart() const { | |
| 118 switch (type_) { | |
| 119 case UP: | |
| 120 return gfx::NativeTheme::kScrollbarUpArrow; | |
| 121 case DOWN: | |
| 122 return gfx::NativeTheme::kScrollbarDownArrow; | |
| 123 case LEFT: | |
| 124 return gfx::NativeTheme::kScrollbarLeftArrow; | |
| 125 case RIGHT: | |
| 126 return gfx::NativeTheme::kScrollbarRightArrow; | |
| 127 default: | |
| 128 return gfx::NativeTheme::kScrollbarUpArrow; | |
| 129 } | |
| 130 } | |
| 131 | |
| 132 gfx::NativeTheme::State | |
| 133 ScrollBarButton::GetNativeThemeState() const { | |
| 134 gfx::NativeTheme::State state; | |
| 135 | |
| 136 switch (state_) { | |
| 137 case CustomButton::BS_HOT: | |
| 138 state = gfx::NativeTheme::kHovered; | |
| 139 break; | |
| 140 case CustomButton::BS_PUSHED: | |
| 141 state = gfx::NativeTheme::kPressed; | |
| 142 break; | |
| 143 case CustomButton::BS_DISABLED: | |
| 144 state = gfx::NativeTheme::kDisabled; | |
| 145 break; | |
| 146 case CustomButton::BS_NORMAL: | |
| 147 default: | |
| 148 state = gfx::NativeTheme::kNormal; | |
| 149 break; | |
| 150 } | |
| 151 | |
| 152 return state; | |
| 153 } | |
| 154 | |
| 155 ///////////////////////////////////////////////////////////////////////////// | |
| 156 // ScrollBarThumb | |
| 157 | |
| 158 ScrollBarThumb::ScrollBarThumb(BaseScrollBar* scroll_bar) | |
| 159 : BaseScrollBarThumb(scroll_bar), | |
| 160 scroll_bar_(scroll_bar) { | |
| 161 } | |
| 162 | |
| 163 ScrollBarThumb::~ScrollBarThumb() { | |
| 164 } | |
| 165 | |
| 166 gfx::Size ScrollBarThumb::GetPreferredSize() { | |
| 167 const gfx::NativeTheme* native_theme = gfx::NativeTheme::instance(); | |
| 168 return native_theme->GetPartSize(GetNativeThemePart(), | |
| 169 GetNativeThemeState(), | |
| 170 GetNativeThemeParams()); | |
| 171 } | |
| 172 | |
| 173 void ScrollBarThumb::OnPaint(gfx::Canvas* canvas) { | |
| 174 const gfx::NativeTheme* native_theme = gfx::NativeTheme::instance(); | |
| 175 | |
| 176 native_theme->Paint(canvas->AsCanvasSkia(), | |
| 177 GetNativeThemePart(), | |
| 178 GetNativeThemeState(), | |
| 179 GetLocalBounds(), | |
| 180 GetNativeThemeParams()); | |
| 181 } | |
| 182 | |
| 183 gfx::NativeTheme::ExtraParams | |
| 184 ScrollBarThumb::GetNativeThemeParams() const { | |
| 185 gfx::NativeTheme::ExtraParams params; | |
| 186 | |
| 187 switch (GetState()) { | |
| 188 case CustomButton::BS_HOT: | |
| 189 params.scrollbar_thumb.is_hovering = true; | |
| 190 break; | |
| 191 default: | |
| 192 params.scrollbar_thumb.is_hovering = false; | |
| 193 break; | |
| 194 } | |
| 195 | |
| 196 return params; | |
| 197 } | |
| 198 | |
| 199 gfx::NativeTheme::Part ScrollBarThumb::GetNativeThemePart() const { | |
| 200 if (scroll_bar_->IsHorizontal()) | |
| 201 return gfx::NativeTheme::kScrollbarHorizontalThumb; | |
| 202 return gfx::NativeTheme::kScrollbarVerticalThumb; | |
| 203 } | |
| 204 | |
| 205 gfx::NativeTheme::State ScrollBarThumb::GetNativeThemeState() const { | |
| 206 gfx::NativeTheme::State state; | |
| 207 | |
| 208 switch (GetState()) { | |
| 209 case CustomButton::BS_HOT: | |
| 210 state = gfx::NativeTheme::kHovered; | |
| 211 break; | |
| 212 case CustomButton::BS_PUSHED: | |
| 213 state = gfx::NativeTheme::kPressed; | |
| 214 break; | |
| 215 case CustomButton::BS_DISABLED: | |
| 216 state = gfx::NativeTheme::kDisabled; | |
| 217 break; | |
| 218 case CustomButton::BS_NORMAL: | |
| 219 default: | |
| 220 state = gfx::NativeTheme::kNormal; | |
| 221 break; | |
| 222 } | |
| 223 | |
| 224 return state; | |
| 225 } | |
| 226 | |
| 227 } // namespace | |
| 228 | |
| 229 //////////////////////////////////////////////////////////////////////////////// | |
| 230 // NativeScrollBarViews, public: | |
| 231 | |
| 232 NativeScrollBarViews::NativeScrollBarViews(NativeScrollBar* scroll_bar) | |
| 233 : BaseScrollBar(scroll_bar->IsHorizontal(), | |
| 234 new ScrollBarThumb(this)), | |
| 235 native_scroll_bar_(scroll_bar) { | |
| 236 SetController(native_scroll_bar_->GetController()); | |
| 237 | |
| 238 if (native_scroll_bar_->IsHorizontal()) { | |
| 239 prev_button_ = new ScrollBarButton(this, ScrollBarButton::LEFT); | |
| 240 next_button_ = new ScrollBarButton(this, ScrollBarButton::RIGHT); | |
| 241 | |
| 242 part_ = gfx::NativeTheme::kScrollbarHorizontalTrack; | |
| 243 } else { | |
| 244 prev_button_ = new ScrollBarButton(this, ScrollBarButton::UP); | |
| 245 next_button_ = new ScrollBarButton(this, ScrollBarButton::DOWN); | |
| 246 | |
| 247 part_ = gfx::NativeTheme::kScrollbarVerticalTrack; | |
| 248 } | |
| 249 | |
| 250 state_ = gfx::NativeTheme::kNormal; | |
| 251 | |
| 252 AddChildView(prev_button_); | |
| 253 AddChildView(next_button_); | |
| 254 | |
| 255 prev_button_->set_context_menu_controller(this); | |
| 256 next_button_->set_context_menu_controller(this); | |
| 257 } | |
| 258 | |
| 259 NativeScrollBarViews::~NativeScrollBarViews() { | |
| 260 } | |
| 261 | |
| 262 //////////////////////////////////////////////////////////////////////////////// | |
| 263 // NativeScrollBarViews, View overrides: | |
| 264 | |
| 265 void NativeScrollBarViews::Layout() { | |
| 266 SetBoundsRect(native_scroll_bar_->GetLocalBounds()); | |
| 267 | |
| 268 gfx::Size size = prev_button_->GetPreferredSize(); | |
| 269 prev_button_->SetBounds(0, 0, size.width(), size.height()); | |
| 270 | |
| 271 if (native_scroll_bar_->IsHorizontal()) { | |
| 272 next_button_->SetBounds(width() - size.width(), 0, | |
| 273 size.width(), size.height()); | |
| 274 } else { | |
| 275 next_button_->SetBounds(0, height() - size.height(), | |
| 276 size.width(), size.height()); | |
| 277 } | |
| 278 | |
| 279 GetThumb()->SetBoundsRect(GetTrackBounds()); | |
| 280 } | |
| 281 | |
| 282 void NativeScrollBarViews::OnPaint(gfx::Canvas* canvas) { | |
| 283 const gfx::NativeTheme* native_theme = gfx::NativeTheme::instance(); | |
| 284 gfx::Rect bounds = GetTrackBounds(); | |
| 285 | |
| 286 params_.scrollbar_track.track_x = bounds.x(); | |
| 287 params_.scrollbar_track.track_y = bounds.y(); | |
| 288 params_.scrollbar_track.track_width = bounds.width(); | |
| 289 params_.scrollbar_track.track_height = bounds.height(); | |
| 290 | |
| 291 | |
| 292 native_theme->Paint(canvas->AsCanvasSkia(), | |
| 293 part_, | |
| 294 state_, | |
| 295 bounds, | |
| 296 params_); | |
| 297 } | |
| 298 | |
| 299 gfx::Size NativeScrollBarViews::GetPreferredSize() { | |
| 300 if (native_scroll_bar_->IsHorizontal()) | |
| 301 return gfx::Size(0, GetHorizontalScrollBarHeight()); | |
| 302 return gfx::Size(GetVerticalScrollBarWidth(), 0); | |
| 303 } | |
| 304 | |
| 305 int NativeScrollBarViews::GetLayoutSize() const { | |
| 306 gfx::Size size = prev_button_->GetPreferredSize(); | |
| 307 return IsHorizontal() ? size.height() : size.width(); | |
| 308 } | |
| 309 | |
| 310 void NativeScrollBarViews::ScrollToPosition(int position) { | |
| 311 GetController()->ScrollToPosition(native_scroll_bar_, position); | |
| 312 } | |
| 313 | |
| 314 int NativeScrollBarViews::GetScrollIncrement(bool is_page, | |
| 315 bool is_positive) { | |
| 316 return GetController()->GetScrollIncrement(native_scroll_bar_, | |
| 317 is_page, | |
| 318 is_positive); | |
| 319 } | |
| 320 | |
| 321 ////////////////////////////////////////////////////////////////////////////// | |
| 322 // BaseButton::ButtonListener overrides: | |
| 323 | |
| 324 void NativeScrollBarViews::ButtonPressed(Button* sender, | |
| 325 const views::Event& event) { | |
| 326 if (sender == prev_button_) { | |
| 327 ScrollByAmount(SCROLL_PREV_LINE); | |
| 328 } else if (sender == next_button_) { | |
| 329 ScrollByAmount(SCROLL_NEXT_LINE); | |
| 330 } | |
| 331 } | |
| 332 | |
| 333 //////////////////////////////////////////////////////////////////////////////// | |
| 334 // NativeScrollBarViews, NativeScrollBarWrapper overrides: | |
| 335 | |
| 336 int NativeScrollBarViews::GetPosition() const { | |
| 337 return BaseScrollBar::GetPosition(); | |
| 338 } | |
| 339 | |
| 340 View* NativeScrollBarViews::GetView() { | |
| 341 return this; | |
| 342 } | |
| 343 | |
| 344 void NativeScrollBarViews::Update(int viewport_size, | |
| 345 int content_size, | |
| 346 int current_pos) { | |
| 347 BaseScrollBar::Update(viewport_size, content_size, current_pos); | |
| 348 } | |
| 349 | |
| 350 //////////////////////////////////////////////////////////////////////////////// | |
| 351 // NativeScrollBarViews, private: | |
| 352 | |
| 353 gfx::Rect NativeScrollBarViews::GetTrackBounds() const { | |
| 354 gfx::Rect bounds = GetLocalBounds(); | |
| 355 gfx::Size size = prev_button_->GetPreferredSize(); | |
| 356 BaseScrollBarThumb* thumb = GetThumb(); | |
| 357 | |
| 358 if (native_scroll_bar_->IsHorizontal()) { | |
| 359 bounds.set_x(bounds.x() + size.width()); | |
| 360 bounds.set_width(bounds.width() - 2 * size.width()); | |
| 361 bounds.set_height(thumb->GetPreferredSize().height()); | |
| 362 } else { | |
| 363 bounds.set_y(bounds.y() + size.height()); | |
| 364 bounds.set_height(bounds.height() - 2 * size.height()); | |
| 365 bounds.set_width(thumb->GetPreferredSize().width()); | |
| 366 } | |
| 367 | |
| 368 return bounds; | |
| 369 } | |
| 370 | |
| 371 } // namespace views | |
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Chromium Code Reviews
Issue 7767002:
Revert 98434 - Adding a Views scrollbar implementation. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/