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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 #include "ui/views/controls/scrollbar/native_scroll_bar_views.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "ui/events/keycodes/keyboard_codes.h" | |
| 9 #include "ui/gfx/canvas.h" | |
| 10 #include "ui/gfx/path.h" | |
| 11 #include "ui/views/controls/button/custom_button.h" | |
| 12 #include "ui/views/controls/focusable_border.h" | |
| 13 #include "ui/views/controls/scrollbar/base_scroll_bar_button.h" | |
| 14 #include "ui/views/controls/scrollbar/base_scroll_bar_thumb.h" | |
| 15 #include "ui/views/controls/scrollbar/native_scroll_bar.h" | |
| 16 #include "ui/views/controls/scrollbar/scroll_bar.h" | |
| 17 | |
| 18 namespace views { | |
| 19 | |
| 20 namespace { | |
| 21 | |
| 22 // Wrapper for the scroll buttons. | |
| 23 class ScrollBarButton : public BaseScrollBarButton { | |
| 24 public: | |
| 25 enum Type { | |
| 26 UP, | |
| 27 DOWN, | |
| 28 LEFT, | |
| 29 RIGHT, | |
| 30 }; | |
| 31 | |
| 32 ScrollBarButton(ButtonListener* listener, Type type); | |
| 33 ~ScrollBarButton() override; | |
| 34 | |
| 35 gfx::Size GetPreferredSize() const override; | |
| 36 const char* GetClassName() const override { return "ScrollBarButton"; } | |
| 37 | |
| 38 protected: | |
| 39 void OnPaint(gfx::Canvas* canvas) override; | |
| 40 | |
| 41 private: | |
| 42 ui::NativeTheme::ExtraParams GetNativeThemeParams() const; | |
| 43 ui::NativeTheme::Part GetNativeThemePart() const; | |
| 44 ui::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 ~ScrollBarThumb() override; | |
| 54 | |
| 55 gfx::Size GetPreferredSize() const override; | |
| 56 const char* GetClassName() const override { return "ScrollBarThumb"; } | |
| 57 | |
| 58 protected: | |
| 59 void OnPaint(gfx::Canvas* canvas) override; | |
| 60 | |
| 61 private: | |
| 62 ui::NativeTheme::ExtraParams GetNativeThemeParams() const; | |
| 63 ui::NativeTheme::Part GetNativeThemePart() const; | |
| 64 ui::NativeTheme::State GetNativeThemeState() const; | |
| 65 | |
| 66 ScrollBar* scroll_bar_; | |
| 67 }; | |
| 68 | |
| 69 ///////////////////////////////////////////////////////////////////////////// | |
| 70 // ScrollBarButton | |
| 71 | |
| 72 ScrollBarButton::ScrollBarButton(ButtonListener* listener, Type type) | |
| 73 : BaseScrollBarButton(listener), | |
| 74 type_(type) { | |
| 75 SetFocusBehavior(FocusBehavior::NEVER); | |
| 76 } | |
| 77 | |
| 78 ScrollBarButton::~ScrollBarButton() { | |
| 79 } | |
| 80 | |
| 81 gfx::Size ScrollBarButton::GetPreferredSize() const { | |
| 82 return GetNativeTheme()->GetPartSize(GetNativeThemePart(), | |
| 83 GetNativeThemeState(), | |
| 84 GetNativeThemeParams()); | |
| 85 } | |
| 86 | |
| 87 void ScrollBarButton::OnPaint(gfx::Canvas* canvas) { | |
| 88 gfx::Rect bounds(GetPreferredSize()); | |
| 89 GetNativeTheme()->Paint(canvas->sk_canvas(), GetNativeThemePart(), | |
| 90 GetNativeThemeState(), bounds, | |
| 91 GetNativeThemeParams()); | |
| 92 } | |
| 93 | |
| 94 ui::NativeTheme::ExtraParams | |
| 95 ScrollBarButton::GetNativeThemeParams() const { | |
| 96 ui::NativeTheme::ExtraParams params; | |
| 97 | |
| 98 switch (state()) { | |
| 99 case CustomButton::STATE_HOVERED: | |
| 100 params.scrollbar_arrow.is_hovering = true; | |
| 101 break; | |
| 102 default: | |
| 103 params.scrollbar_arrow.is_hovering = false; | |
| 104 break; | |
| 105 } | |
| 106 | |
| 107 return params; | |
| 108 } | |
| 109 | |
| 110 ui::NativeTheme::Part | |
| 111 ScrollBarButton::GetNativeThemePart() const { | |
| 112 switch (type_) { | |
| 113 case UP: | |
| 114 return ui::NativeTheme::kScrollbarUpArrow; | |
| 115 case DOWN: | |
| 116 return ui::NativeTheme::kScrollbarDownArrow; | |
| 117 case LEFT: | |
| 118 return ui::NativeTheme::kScrollbarLeftArrow; | |
| 119 case RIGHT: | |
| 120 return ui::NativeTheme::kScrollbarRightArrow; | |
| 121 } | |
| 122 | |
| 123 NOTREACHED(); | |
| 124 return ui::NativeTheme::kScrollbarUpArrow; | |
| 125 } | |
| 126 | |
| 127 ui::NativeTheme::State | |
| 128 ScrollBarButton::GetNativeThemeState() const { | |
| 129 switch (state()) { | |
| 130 case CustomButton::STATE_HOVERED: | |
| 131 return ui::NativeTheme::kHovered; | |
| 132 case CustomButton::STATE_PRESSED: | |
| 133 return ui::NativeTheme::kPressed; | |
| 134 case CustomButton::STATE_DISABLED: | |
| 135 return ui::NativeTheme::kDisabled; | |
| 136 case CustomButton::STATE_NORMAL: | |
| 137 return ui::NativeTheme::kNormal; | |
| 138 case CustomButton::STATE_COUNT: | |
| 139 break; | |
| 140 } | |
| 141 | |
| 142 NOTREACHED(); | |
| 143 return ui::NativeTheme::kNormal; | |
| 144 } | |
| 145 | |
| 146 ///////////////////////////////////////////////////////////////////////////// | |
| 147 // ScrollBarThumb | |
| 148 | |
| 149 ScrollBarThumb::ScrollBarThumb(BaseScrollBar* scroll_bar) | |
| 150 : BaseScrollBarThumb(scroll_bar), | |
| 151 scroll_bar_(scroll_bar) { | |
| 152 } | |
| 153 | |
| 154 ScrollBarThumb::~ScrollBarThumb() { | |
| 155 } | |
| 156 | |
| 157 gfx::Size ScrollBarThumb::GetPreferredSize() const { | |
| 158 return GetNativeTheme()->GetPartSize(GetNativeThemePart(), | |
| 159 GetNativeThemeState(), | |
| 160 GetNativeThemeParams()); | |
| 161 } | |
| 162 | |
| 163 void ScrollBarThumb::OnPaint(gfx::Canvas* canvas) { | |
| 164 const gfx::Rect local_bounds(GetLocalBounds()); | |
| 165 const ui::NativeTheme::State theme_state = GetNativeThemeState(); | |
| 166 const ui::NativeTheme::ExtraParams extra_params(GetNativeThemeParams()); | |
| 167 GetNativeTheme()->Paint(canvas->sk_canvas(), | |
| 168 GetNativeThemePart(), | |
| 169 theme_state, | |
| 170 local_bounds, | |
| 171 extra_params); | |
| 172 const ui::NativeTheme::Part gripper_part = scroll_bar_->IsHorizontal() ? | |
| 173 ui::NativeTheme::kScrollbarHorizontalGripper : | |
| 174 ui::NativeTheme::kScrollbarVerticalGripper; | |
| 175 GetNativeTheme()->Paint(canvas->sk_canvas(), gripper_part, theme_state, | |
| 176 local_bounds, extra_params); | |
| 177 } | |
| 178 | |
| 179 ui::NativeTheme::ExtraParams ScrollBarThumb::GetNativeThemeParams() const { | |
| 180 // This gives the behavior we want. | |
| 181 ui::NativeTheme::ExtraParams params; | |
| 182 params.scrollbar_thumb.is_hovering = | |
| 183 (GetState() != CustomButton::STATE_HOVERED); | |
| 184 return params; | |
| 185 } | |
| 186 | |
| 187 ui::NativeTheme::Part ScrollBarThumb::GetNativeThemePart() const { | |
| 188 if (scroll_bar_->IsHorizontal()) | |
| 189 return ui::NativeTheme::kScrollbarHorizontalThumb; | |
| 190 return ui::NativeTheme::kScrollbarVerticalThumb; | |
| 191 } | |
| 192 | |
| 193 ui::NativeTheme::State ScrollBarThumb::GetNativeThemeState() const { | |
| 194 switch (GetState()) { | |
| 195 case CustomButton::STATE_HOVERED: | |
| 196 return ui::NativeTheme::kHovered; | |
| 197 case CustomButton::STATE_PRESSED: | |
| 198 return ui::NativeTheme::kPressed; | |
| 199 case CustomButton::STATE_DISABLED: | |
| 200 return ui::NativeTheme::kDisabled; | |
| 201 case CustomButton::STATE_NORMAL: | |
| 202 return ui::NativeTheme::kNormal; | |
| 203 case CustomButton::STATE_COUNT: | |
| 204 break; | |
| 205 } | |
| 206 | |
| 207 NOTREACHED(); | |
| 208 return ui::NativeTheme::kNormal; | |
| 209 } | |
| 210 | |
| 211 } // namespace | |
| 212 | |
| 213 //////////////////////////////////////////////////////////////////////////////// | |
| 214 // NativeScrollBarViews, public: | |
| 215 | |
| 216 const char NativeScrollBarViews::kViewClassName[] = "NativeScrollBarViews"; | |
| 217 | |
| 218 NativeScrollBarViews::NativeScrollBarViews(NativeScrollBar* scroll_bar) | |
| 219 : BaseScrollBar(scroll_bar->IsHorizontal(), | |
| 220 new ScrollBarThumb(this)), | |
| 221 native_scroll_bar_(scroll_bar) { | |
| 222 set_controller(native_scroll_bar_->controller()); | |
| 223 | |
| 224 if (native_scroll_bar_->IsHorizontal()) { | |
| 225 prev_button_ = new ScrollBarButton(this, ScrollBarButton::LEFT); | |
| 226 next_button_ = new ScrollBarButton(this, ScrollBarButton::RIGHT); | |
| 227 | |
| 228 part_ = ui::NativeTheme::kScrollbarHorizontalTrack; | |
| 229 } else { | |
| 230 prev_button_ = new ScrollBarButton(this, ScrollBarButton::UP); | |
| 231 next_button_ = new ScrollBarButton(this, ScrollBarButton::DOWN); | |
| 232 | |
| 233 part_ = ui::NativeTheme::kScrollbarVerticalTrack; | |
| 234 } | |
| 235 | |
| 236 state_ = ui::NativeTheme::kNormal; | |
| 237 | |
| 238 AddChildView(prev_button_); | |
| 239 AddChildView(next_button_); | |
| 240 | |
| 241 prev_button_->set_context_menu_controller(this); | |
| 242 next_button_->set_context_menu_controller(this); | |
| 243 } | |
| 244 | |
| 245 NativeScrollBarViews::~NativeScrollBarViews() { | |
| 246 } | |
| 247 | |
| 248 //////////////////////////////////////////////////////////////////////////////// | |
| 249 // NativeScrollBarViews, View overrides: | |
| 250 | |
| 251 void NativeScrollBarViews::Layout() { | |
| 252 gfx::Size size = prev_button_->GetPreferredSize(); | |
| 253 prev_button_->SetBounds(0, 0, size.width(), size.height()); | |
| 254 | |
| 255 if (native_scroll_bar_->IsHorizontal()) { | |
| 256 next_button_->SetBounds(width() - size.width(), 0, | |
| 257 size.width(), size.height()); | |
| 258 } else { | |
| 259 next_button_->SetBounds(0, height() - size.height(), | |
| 260 size.width(), size.height()); | |
| 261 } | |
| 262 | |
| 263 GetThumb()->SetBoundsRect(GetTrackBounds()); | |
| 264 } | |
| 265 | |
| 266 void NativeScrollBarViews::OnPaint(gfx::Canvas* canvas) { | |
| 267 gfx::Rect bounds = GetTrackBounds(); | |
| 268 | |
| 269 if (bounds.IsEmpty()) | |
| 270 return; | |
| 271 | |
| 272 params_.scrollbar_track.track_x = bounds.x(); | |
| 273 params_.scrollbar_track.track_y = bounds.y(); | |
| 274 params_.scrollbar_track.track_width = bounds.width(); | |
| 275 params_.scrollbar_track.track_height = bounds.height(); | |
| 276 params_.scrollbar_track.classic_state = 0; | |
| 277 | |
| 278 GetNativeTheme()->Paint(canvas->sk_canvas(), part_, state_, bounds, params_); | |
| 279 } | |
| 280 | |
| 281 gfx::Size NativeScrollBarViews::GetPreferredSize() const { | |
| 282 const ui::NativeTheme* theme = native_scroll_bar_->GetNativeTheme(); | |
| 283 if (native_scroll_bar_->IsHorizontal()) | |
| 284 return gfx::Size(0, GetHorizontalScrollBarHeight(theme)); | |
| 285 return gfx::Size(GetVerticalScrollBarWidth(theme), 0); | |
| 286 } | |
| 287 | |
| 288 const char* NativeScrollBarViews::GetClassName() const { | |
| 289 return kViewClassName; | |
| 290 } | |
| 291 | |
| 292 int NativeScrollBarViews::GetLayoutSize() const { | |
| 293 gfx::Size size = prev_button_->GetPreferredSize(); | |
| 294 return IsHorizontal() ? size.height() : size.width(); | |
| 295 } | |
| 296 | |
| 297 void NativeScrollBarViews::ScrollToPosition(int position) { | |
| 298 controller()->ScrollToPosition(native_scroll_bar_, position); | |
| 299 } | |
| 300 | |
| 301 int NativeScrollBarViews::GetScrollIncrement(bool is_page, bool is_positive) { | |
| 302 return controller()->GetScrollIncrement(native_scroll_bar_, | |
| 303 is_page, | |
| 304 is_positive); | |
| 305 } | |
| 306 | |
| 307 ////////////////////////////////////////////////////////////////////////////// | |
| 308 // BaseButton::ButtonListener overrides: | |
| 309 | |
| 310 void NativeScrollBarViews::ButtonPressed(Button* sender, | |
| 311 const ui::Event& event) { | |
| 312 if (sender == prev_button_) { | |
| 313 ScrollByAmount(SCROLL_PREV_LINE); | |
| 314 } else if (sender == next_button_) { | |
| 315 ScrollByAmount(SCROLL_NEXT_LINE); | |
| 316 } | |
| 317 } | |
| 318 | |
| 319 //////////////////////////////////////////////////////////////////////////////// | |
| 320 // NativeScrollBarViews, NativeScrollBarWrapper overrides: | |
| 321 | |
| 322 int NativeScrollBarViews::GetPosition() const { | |
| 323 return BaseScrollBar::GetPosition(); | |
| 324 } | |
| 325 | |
| 326 View* NativeScrollBarViews::GetView() { | |
| 327 return this; | |
| 328 } | |
| 329 | |
| 330 void NativeScrollBarViews::Update(int viewport_size, | |
| 331 int content_size, | |
| 332 int current_pos) { | |
| 333 BaseScrollBar::Update(viewport_size, content_size, current_pos); | |
| 334 } | |
| 335 | |
| 336 //////////////////////////////////////////////////////////////////////////////// | |
| 337 // NativeScrollBarViews, private: | |
| 338 | |
| 339 gfx::Rect NativeScrollBarViews::GetTrackBounds() const { | |
| 340 gfx::Rect bounds = GetLocalBounds(); | |
| 341 gfx::Size size = prev_button_->GetPreferredSize(); | |
| 342 BaseScrollBarThumb* thumb = GetThumb(); | |
| 343 | |
| 344 if (native_scroll_bar_->IsHorizontal()) { | |
| 345 bounds.set_x(bounds.x() + size.width()); | |
| 346 bounds.set_width(std::max(0, bounds.width() - 2 * size.width())); | |
| 347 bounds.set_height(thumb->GetPreferredSize().height()); | |
| 348 } else { | |
| 349 bounds.set_y(bounds.y() + size.height()); | |
| 350 bounds.set_height(std::max(0, bounds.height() - 2 * size.height())); | |
| 351 bounds.set_width(thumb->GetPreferredSize().width()); | |
| 352 } | |
| 353 | |
| 354 return bounds; | |
| 355 } | |
| 356 | |
| 357 //////////////////////////////////////////////////////////////////////////////// | |
| 358 // NativewScrollBarWrapper, public: | |
| 359 | |
| 360 // static | |
| 361 NativeScrollBarWrapper* NativeScrollBarWrapper::CreateWrapper( | |
| 362 NativeScrollBar* scroll_bar) { | |
| 363 return new NativeScrollBarViews(scroll_bar); | |
| 364 } | |
| 365 | |
| 366 // static | |
| 367 int NativeScrollBarWrapper::GetHorizontalScrollBarHeight( | |
| 368 const ui::NativeTheme* theme) { | |
| 369 ui::NativeTheme::ExtraParams button_params; | |
| 370 button_params.scrollbar_arrow.is_hovering = false; | |
| 371 gfx::Size button_size = theme->GetPartSize( | |
| 372 ui::NativeTheme::kScrollbarLeftArrow, | |
| 373 ui::NativeTheme::kNormal, | |
| 374 button_params); | |
| 375 | |
| 376 ui::NativeTheme::ExtraParams thumb_params; | |
| 377 thumb_params.scrollbar_thumb.is_hovering = false; | |
| 378 gfx::Size track_size = theme->GetPartSize( | |
| 379 ui::NativeTheme::kScrollbarHorizontalThumb, | |
| 380 ui::NativeTheme::kNormal, | |
| 381 thumb_params); | |
| 382 | |
| 383 return std::max(track_size.height(), button_size.height()); | |
| 384 } | |
| 385 | |
| 386 // static | |
| 387 int NativeScrollBarWrapper::GetVerticalScrollBarWidth( | |
| 388 const ui::NativeTheme* theme) { | |
| 389 ui::NativeTheme::ExtraParams button_params; | |
| 390 button_params.scrollbar_arrow.is_hovering = false; | |
| 391 gfx::Size button_size = theme->GetPartSize( | |
| 392 ui::NativeTheme::kScrollbarUpArrow, | |
| 393 ui::NativeTheme::kNormal, | |
| 394 button_params); | |
| 395 | |
| 396 ui::NativeTheme::ExtraParams thumb_params; | |
| 397 thumb_params.scrollbar_thumb.is_hovering = false; | |
| 398 gfx::Size track_size = theme->GetPartSize( | |
| 399 ui::NativeTheme::kScrollbarVerticalThumb, | |
| 400 ui::NativeTheme::kNormal, | |
| 401 thumb_params); | |
| 402 | |
| 403 return std::max(track_size.width(), button_size.width()); | |
| 404 } | |
| 405 | |
| 406 } // namespace views | |
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Chromium Code Reviews
Issue 2480763005:
Remove NativeScrollBar*. (Closed)
