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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/view.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 | |
| 9 #include "base/debug/trace_event.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/memory/scoped_ptr.h" | |
| 12 #include "base/message_loop.h" | |
| 13 #include "base/stringprintf.h" | |
| 14 #include "base/utf_string_conversions.h" | |
| 15 #include "third_party/skia/include/core/SkRect.h" | |
| 16 #include "ui/base/accessibility/accessibility_types.h" | |
| 17 #include "ui/base/dragdrop/drag_drop_types.h" | |
| 18 #include "ui/gfx/canvas_skia.h" | |
| 19 #include "ui/gfx/compositor/compositor.h" | |
| 20 #include "ui/gfx/compositor/layer.h" | |
| 21 #include "ui/gfx/compositor/layer_animator.h" | |
| 22 #include "ui/gfx/interpolated_transform.h" | |
| 23 #include "ui/gfx/path.h" | |
| 24 #include "ui/gfx/point3.h" | |
| 25 #include "ui/gfx/transform.h" | |
| 26 #include "ui/views/context_menu_controller.h" | |
| 27 #include "ui/views/drag_controller.h" | |
| 28 #include "ui/views/layout/layout_manager.h" | |
| 29 #include "ui/views/widget/native_widget_private.h" | |
| 30 #include "ui/views/widget/root_view.h" | |
| 31 #include "ui/views/widget/tooltip_manager.h" | |
| 32 #include "ui/views/widget/widget.h" | |
| 33 #include "views/background.h" | |
| 34 #include "views/views_delegate.h" | |
| 35 | |
| 36 #if defined(OS_WIN) | |
| 37 #include "base/win/scoped_gdi_object.h" | |
| 38 #include "ui/views/accessibility/native_view_accessibility_win.h" | |
| 39 #endif | |
| 40 #if defined(TOOLKIT_USES_GTK) | |
| 41 #include "ui/base/gtk/scoped_handle_gtk.h" | |
| 42 #endif | |
| 43 | |
| 44 namespace { | |
| 45 | |
| 46 // Whether to use accelerated compositing when necessary (e.g. when a view has a | |
| 47 // transformation). | |
| 48 #if defined(VIEWS_COMPOSITOR) | |
| 49 bool use_acceleration_when_possible = true; | |
| 50 #else | |
| 51 bool use_acceleration_when_possible = false; | |
| 52 #endif | |
| 53 | |
| 54 // Saves the drawing state, and restores the state when going out of scope. | |
| 55 class ScopedCanvas { | |
| 56 public: | |
| 57 explicit ScopedCanvas(gfx::Canvas* canvas) : canvas_(canvas) { | |
| 58 if (canvas_) | |
| 59 canvas_->Save(); | |
| 60 } | |
| 61 ~ScopedCanvas() { | |
| 62 if (canvas_) | |
| 63 canvas_->Restore(); | |
| 64 } | |
| 65 void SetCanvas(gfx::Canvas* canvas) { | |
| 66 if (canvas_) | |
| 67 canvas_->Restore(); | |
| 68 canvas_ = canvas; | |
| 69 canvas_->Save(); | |
| 70 } | |
| 71 | |
| 72 private: | |
| 73 gfx::Canvas* canvas_; | |
| 74 | |
| 75 DISALLOW_COPY_AND_ASSIGN(ScopedCanvas); | |
| 76 }; | |
| 77 | |
| 78 // Returns the top view in |view|'s hierarchy. | |
| 79 const views::View* GetHierarchyRoot(const views::View* view) { | |
| 80 const views::View* root = view; | |
| 81 while (root && root->parent()) | |
| 82 root = root->parent(); | |
| 83 return root; | |
| 84 } | |
| 85 | |
| 86 } // namespace | |
| 87 | |
| 88 namespace views { | |
| 89 | |
| 90 // static | |
| 91 ViewsDelegate* ViewsDelegate::views_delegate = NULL; | |
| 92 | |
| 93 // static | |
| 94 const char View::kViewClassName[] = "views/View"; | |
| 95 | |
| 96 //////////////////////////////////////////////////////////////////////////////// | |
| 97 // View, public: | |
| 98 | |
| 99 // TO BE MOVED ----------------------------------------------------------------- | |
| 100 | |
| 101 void View::SetHotTracked(bool flag) { | |
| 102 } | |
| 103 | |
| 104 bool View::IsHotTracked() const { | |
| 105 return false; | |
| 106 } | |
| 107 | |
| 108 // Creation and lifetime ------------------------------------------------------- | |
| 109 | |
| 110 View::View() | |
| 111 : parent_owned_(true), | |
| 112 id_(0), | |
| 113 group_(-1), | |
| 114 parent_(NULL), | |
| 115 visible_(true), | |
| 116 enabled_(true), | |
| 117 painting_enabled_(true), | |
| 118 registered_for_visible_bounds_notification_(false), | |
| 119 clip_x_(0.0), | |
| 120 clip_y_(0.0), | |
| 121 needs_layout_(true), | |
| 122 flip_canvas_on_paint_for_rtl_ui_(false), | |
| 123 paint_to_layer_(false), | |
| 124 accelerator_registration_delayed_(false), | |
| 125 accelerator_focus_manager_(NULL), | |
| 126 registered_accelerator_count_(0), | |
| 127 next_focusable_view_(NULL), | |
| 128 previous_focusable_view_(NULL), | |
| 129 focusable_(false), | |
| 130 accessibility_focusable_(false), | |
| 131 context_menu_controller_(NULL), | |
| 132 drag_controller_(NULL) { | |
| 133 } | |
| 134 | |
| 135 View::~View() { | |
| 136 if (parent_) | |
| 137 parent_->RemoveChildView(this); | |
| 138 | |
| 139 for (Views::const_iterator i(children_.begin()); i != children_.end(); ++i) { | |
| 140 (*i)->parent_ = NULL; | |
| 141 if ((*i)->parent_owned()) | |
| 142 delete *i; | |
| 143 } | |
| 144 | |
| 145 #if defined(OS_WIN) | |
| 146 if (native_view_accessibility_win_.get()) | |
| 147 native_view_accessibility_win_->set_view(NULL); | |
| 148 #endif | |
| 149 } | |
| 150 | |
| 151 // Tree operations ------------------------------------------------------------- | |
| 152 | |
| 153 const Widget* View::GetWidget() const { | |
| 154 // The root view holds a reference to this view hierarchy's Widget. | |
| 155 return parent_ ? parent_->GetWidget() : NULL; | |
| 156 } | |
| 157 | |
| 158 Widget* View::GetWidget() { | |
| 159 return const_cast<Widget*>(const_cast<const View*>(this)->GetWidget()); | |
| 160 } | |
| 161 | |
| 162 void View::AddChildView(View* view) { | |
| 163 AddChildViewAt(view, child_count()); | |
| 164 } | |
| 165 | |
| 166 void View::AddChildViewAt(View* view, int index) { | |
| 167 CHECK_NE(view, this) << "You cannot add a view as its own child"; | |
| 168 | |
| 169 // If |view| has a parent, remove it from its parent. | |
| 170 View* parent = view->parent_; | |
| 171 if (parent) | |
| 172 parent->RemoveChildView(view); | |
| 173 | |
| 174 // Sets the prev/next focus views. | |
| 175 InitFocusSiblings(view, index); | |
| 176 | |
| 177 // Let's insert the view. | |
| 178 view->parent_ = this; | |
| 179 children_.insert(children_.begin() + index, view); | |
| 180 | |
| 181 for (View* v = this; v; v = v->parent_) | |
| 182 v->ViewHierarchyChangedImpl(false, true, this, view); | |
| 183 | |
| 184 view->PropagateAddNotifications(this, view); | |
| 185 UpdateTooltip(); | |
| 186 if (GetWidget()) | |
| 187 RegisterChildrenForVisibleBoundsNotification(view); | |
| 188 | |
| 189 if (layout_manager_.get()) | |
| 190 layout_manager_->ViewAdded(this, view); | |
| 191 | |
| 192 if (use_acceleration_when_possible) | |
| 193 ReorderLayers(); | |
| 194 | |
| 195 // Make sure the visibility of the child layers are correct. | |
| 196 // If any of the parent View is hidden, then the layers of the subtree | |
| 197 // rooted at |this| should be hidden. Otherwise, all the child layers should | |
| 198 // inherit the visibility of the owner View. | |
| 199 UpdateLayerVisibility(); | |
| 200 } | |
| 201 | |
| 202 void View::ReorderChildView(View* view, int index) { | |
| 203 DCHECK_EQ(view->parent_, this); | |
| 204 if (index < 0) | |
| 205 index = child_count() - 1; | |
| 206 else if (index >= child_count()) | |
| 207 return; | |
| 208 if (children_[index] == view) | |
| 209 return; | |
| 210 | |
| 211 const Views::iterator i(std::find(children_.begin(), children_.end(), view)); | |
| 212 DCHECK(i != children_.end()); | |
| 213 children_.erase(i); | |
| 214 | |
| 215 // Unlink the view first | |
| 216 View* next_focusable = view->next_focusable_view_; | |
| 217 View* prev_focusable = view->previous_focusable_view_; | |
| 218 if (prev_focusable) | |
| 219 prev_focusable->next_focusable_view_ = next_focusable; | |
| 220 if (next_focusable) | |
| 221 next_focusable->previous_focusable_view_ = prev_focusable; | |
| 222 | |
| 223 // Add it in the specified index now. | |
| 224 InitFocusSiblings(view, index); | |
| 225 children_.insert(children_.begin() + index, view); | |
| 226 | |
| 227 if (use_acceleration_when_possible) | |
| 228 ReorderLayers(); | |
| 229 } | |
| 230 | |
| 231 void View::RemoveChildView(View* view) { | |
| 232 DoRemoveChildView(view, true, true, false); | |
| 233 } | |
| 234 | |
| 235 void View::RemoveAllChildViews(bool delete_children) { | |
| 236 while (!children_.empty()) | |
| 237 DoRemoveChildView(children_.front(), false, false, delete_children); | |
| 238 UpdateTooltip(); | |
| 239 } | |
| 240 | |
| 241 bool View::Contains(const View* view) const { | |
| 242 for (const View* v = view; v; v = v->parent_) { | |
| 243 if (v == this) | |
| 244 return true; | |
| 245 } | |
| 246 return false; | |
| 247 } | |
| 248 | |
| 249 int View::GetIndexOf(const View* view) const { | |
| 250 Views::const_iterator i(std::find(children_.begin(), children_.end(), view)); | |
| 251 return i != children_.end() ? static_cast<int>(i - children_.begin()) : -1; | |
| 252 } | |
| 253 | |
| 254 // Size and disposition -------------------------------------------------------- | |
| 255 | |
| 256 void View::SetBounds(int x, int y, int width, int height) { | |
| 257 SetBoundsRect(gfx::Rect(x, y, std::max(0, width), std::max(0, height))); | |
| 258 } | |
| 259 | |
| 260 void View::SetBoundsRect(const gfx::Rect& bounds) { | |
| 261 if (bounds == bounds_) { | |
| 262 if (needs_layout_) { | |
| 263 needs_layout_ = false; | |
| 264 Layout(); | |
| 265 SchedulePaint(); | |
| 266 } | |
| 267 return; | |
| 268 } | |
| 269 | |
| 270 if (IsVisible()) { | |
| 271 // Paint where the view is currently. | |
| 272 SchedulePaintBoundsChanged( | |
| 273 bounds_.size() == bounds.size() ? SCHEDULE_PAINT_SIZE_SAME : | |
| 274 SCHEDULE_PAINT_SIZE_CHANGED); | |
| 275 } | |
| 276 | |
| 277 gfx::Rect prev = bounds_; | |
| 278 bounds_ = bounds; | |
| 279 BoundsChanged(prev); | |
| 280 } | |
| 281 | |
| 282 void View::SetSize(const gfx::Size& size) { | |
| 283 SetBounds(x(), y(), size.width(), size.height()); | |
| 284 } | |
| 285 | |
| 286 void View::SetPosition(const gfx::Point& position) { | |
| 287 SetBounds(position.x(), position.y(), width(), height()); | |
| 288 } | |
| 289 | |
| 290 void View::SetX(int x) { | |
| 291 SetBounds(x, y(), width(), height()); | |
| 292 } | |
| 293 | |
| 294 void View::SetY(int y) { | |
| 295 SetBounds(x(), y, width(), height()); | |
| 296 } | |
| 297 | |
| 298 gfx::Rect View::GetContentsBounds() const { | |
| 299 gfx::Rect contents_bounds(GetLocalBounds()); | |
| 300 if (border_.get()) { | |
| 301 gfx::Insets insets; | |
| 302 border_->GetInsets(&insets); | |
| 303 contents_bounds.Inset(insets); | |
| 304 } | |
| 305 return contents_bounds; | |
| 306 } | |
| 307 | |
| 308 gfx::Rect View::GetLocalBounds() const { | |
| 309 return gfx::Rect(gfx::Point(), size()); | |
| 310 } | |
| 311 | |
| 312 gfx::Insets View::GetInsets() const { | |
| 313 gfx::Insets insets; | |
| 314 if (border_.get()) | |
| 315 border_->GetInsets(&insets); | |
| 316 return insets; | |
| 317 } | |
| 318 | |
| 319 gfx::Rect View::GetVisibleBounds() const { | |
| 320 if (!IsVisibleInRootView()) | |
| 321 return gfx::Rect(); | |
| 322 gfx::Rect vis_bounds(0, 0, width(), height()); | |
| 323 gfx::Rect ancestor_bounds; | |
| 324 const View* view = this; | |
| 325 ui::Transform transform; | |
| 326 | |
| 327 while (view != NULL && !vis_bounds.IsEmpty()) { | |
| 328 transform.ConcatTransform(view->GetTransform()); | |
| 329 transform.ConcatTranslate(static_cast<float>(view->GetMirroredX()), | |
| 330 static_cast<float>(view->y())); | |
| 331 | |
| 332 vis_bounds = view->ConvertRectToParent(vis_bounds); | |
| 333 const View* ancestor = view->parent_; | |
| 334 if (ancestor != NULL) { | |
| 335 ancestor_bounds.SetRect(0, 0, ancestor->width(), ancestor->height()); | |
| 336 vis_bounds = vis_bounds.Intersect(ancestor_bounds); | |
| 337 } else if (!view->GetWidget()) { | |
| 338 // If the view has no Widget, we're not visible. Return an empty rect. | |
| 339 return gfx::Rect(); | |
| 340 } | |
| 341 view = ancestor; | |
| 342 } | |
| 343 if (vis_bounds.IsEmpty()) | |
| 344 return vis_bounds; | |
| 345 // Convert back to this views coordinate system. | |
| 346 transform.TransformRectReverse(&vis_bounds); | |
| 347 return vis_bounds; | |
| 348 } | |
| 349 | |
| 350 gfx::Rect View::GetScreenBounds() const { | |
| 351 gfx::Point origin; | |
| 352 View::ConvertPointToScreen(this, &origin); | |
| 353 return gfx::Rect(origin, size()); | |
| 354 } | |
| 355 | |
| 356 gfx::Size View::GetPreferredSize() { | |
| 357 if (layout_manager_.get()) | |
| 358 return layout_manager_->GetPreferredSize(this); | |
| 359 return gfx::Size(); | |
| 360 } | |
| 361 | |
| 362 int View::GetBaseline() const { | |
| 363 return -1; | |
| 364 } | |
| 365 | |
| 366 void View::SizeToPreferredSize() { | |
| 367 gfx::Size prefsize = GetPreferredSize(); | |
| 368 if ((prefsize.width() != width()) || (prefsize.height() != height())) | |
| 369 SetBounds(x(), y(), prefsize.width(), prefsize.height()); | |
| 370 } | |
| 371 | |
| 372 gfx::Size View::GetMinimumSize() { | |
| 373 return GetPreferredSize(); | |
| 374 } | |
| 375 | |
| 376 int View::GetHeightForWidth(int w) { | |
| 377 if (layout_manager_.get()) | |
| 378 return layout_manager_->GetPreferredHeightForWidth(this, w); | |
| 379 return GetPreferredSize().height(); | |
| 380 } | |
| 381 | |
| 382 void View::SetVisible(bool visible) { | |
| 383 if (visible != visible_) { | |
| 384 // If the View is currently visible, schedule paint to refresh parent. | |
| 385 // TODO(beng): not sure we should be doing this if we have a layer. | |
| 386 if (visible_) | |
| 387 SchedulePaint(); | |
| 388 | |
| 389 visible_ = visible; | |
| 390 | |
| 391 // This notifies all sub-views recursively. | |
| 392 PropagateVisibilityNotifications(this, visible_); | |
| 393 UpdateLayerVisibility(); | |
| 394 | |
| 395 // If we are newly visible, schedule paint. | |
| 396 if (visible_) | |
| 397 SchedulePaint(); | |
| 398 } | |
| 399 } | |
| 400 | |
| 401 bool View::IsVisible() const { | |
| 402 return visible_; | |
| 403 } | |
| 404 | |
| 405 bool View::IsVisibleInRootView() const { | |
| 406 return IsVisible() && parent_ ? parent_->IsVisibleInRootView() : false; | |
| 407 } | |
| 408 | |
| 409 void View::SetEnabled(bool enabled) { | |
| 410 if (enabled != enabled_) { | |
| 411 enabled_ = enabled; | |
| 412 OnEnabledChanged(); | |
| 413 } | |
| 414 } | |
| 415 | |
| 416 bool View::IsEnabled() const { | |
| 417 return enabled_; | |
| 418 } | |
| 419 | |
| 420 void View::OnEnabledChanged() { | |
| 421 SchedulePaint(); | |
| 422 } | |
| 423 | |
| 424 // Transformations ------------------------------------------------------------- | |
| 425 | |
| 426 const ui::Transform& View::GetTransform() const { | |
| 427 static const ui::Transform* no_op = new ui::Transform; | |
| 428 return layer() ? layer()->transform() : *no_op; | |
| 429 } | |
| 430 | |
| 431 void View::SetTransform(const ui::Transform& transform) { | |
| 432 if (!transform.HasChange()) { | |
| 433 if (layer()) { | |
| 434 layer()->SetTransform(transform); | |
| 435 if (!paint_to_layer_) | |
| 436 DestroyLayer(); | |
| 437 } else { | |
| 438 // Nothing. | |
| 439 } | |
| 440 } else { | |
| 441 if (!layer()) | |
| 442 CreateLayer(); | |
| 443 layer()->SetTransform(transform); | |
| 444 layer()->ScheduleDraw(); | |
| 445 } | |
| 446 } | |
| 447 | |
| 448 void View::SetPaintToLayer(bool paint_to_layer) { | |
| 449 paint_to_layer_ = paint_to_layer; | |
| 450 if (paint_to_layer_ && !layer()) { | |
| 451 CreateLayer(); | |
| 452 } else if (!paint_to_layer_ && layer()) { | |
| 453 DestroyLayer(); | |
| 454 } | |
| 455 } | |
| 456 | |
| 457 // RTL positioning ------------------------------------------------------------- | |
| 458 | |
| 459 gfx::Rect View::GetMirroredBounds() const { | |
| 460 gfx::Rect bounds(bounds_); | |
| 461 bounds.set_x(GetMirroredX()); | |
| 462 return bounds; | |
| 463 } | |
| 464 | |
| 465 gfx::Point View::GetMirroredPosition() const { | |
| 466 return gfx::Point(GetMirroredX(), y()); | |
| 467 } | |
| 468 | |
| 469 int View::GetMirroredX() const { | |
| 470 return parent_ ? parent_->GetMirroredXForRect(bounds_) : x(); | |
| 471 } | |
| 472 | |
| 473 int View::GetMirroredXForRect(const gfx::Rect& bounds) const { | |
| 474 return base::i18n::IsRTL() ? | |
| 475 (width() - bounds.x() - bounds.width()) : bounds.x(); | |
| 476 } | |
| 477 | |
| 478 int View::GetMirroredXInView(int x) const { | |
| 479 return base::i18n::IsRTL() ? width() - x : x; | |
| 480 } | |
| 481 | |
| 482 int View::GetMirroredXWithWidthInView(int x, int w) const { | |
| 483 return base::i18n::IsRTL() ? width() - x - w : x; | |
| 484 } | |
| 485 | |
| 486 // Layout ---------------------------------------------------------------------- | |
| 487 | |
| 488 void View::Layout() { | |
| 489 needs_layout_ = false; | |
| 490 | |
| 491 // If we have a layout manager, let it handle the layout for us. | |
| 492 if (layout_manager_.get()) | |
| 493 layout_manager_->Layout(this); | |
| 494 | |
| 495 // Make sure to propagate the Layout() call to any children that haven't | |
| 496 // received it yet through the layout manager and need to be laid out. This | |
| 497 // is needed for the case when the child requires a layout but its bounds | |
| 498 // weren't changed by the layout manager. If there is no layout manager, we | |
| 499 // just propagate the Layout() call down the hierarchy, so whoever receives | |
| 500 // the call can take appropriate action. | |
| 501 for (int i = 0, count = child_count(); i < count; ++i) { | |
| 502 View* child = child_at(i); | |
| 503 if (child->needs_layout_ || !layout_manager_.get()) { | |
| 504 child->needs_layout_ = false; | |
| 505 child->Layout(); | |
| 506 } | |
| 507 } | |
| 508 } | |
| 509 | |
| 510 void View::InvalidateLayout() { | |
| 511 // Always invalidate up. This is needed to handle the case of us already being | |
| 512 // valid, but not our parent. | |
| 513 needs_layout_ = true; | |
| 514 if (parent_) | |
| 515 parent_->InvalidateLayout(); | |
| 516 } | |
| 517 | |
| 518 LayoutManager* View::GetLayoutManager() const { | |
| 519 return layout_manager_.get(); | |
| 520 } | |
| 521 | |
| 522 void View::SetLayoutManager(LayoutManager* layout_manager) { | |
| 523 if (layout_manager_.get()) | |
| 524 layout_manager_->Uninstalled(this); | |
| 525 | |
| 526 layout_manager_.reset(layout_manager); | |
| 527 if (layout_manager_.get()) | |
| 528 layout_manager_->Installed(this); | |
| 529 } | |
| 530 | |
| 531 // Attributes ------------------------------------------------------------------ | |
| 532 | |
| 533 std::string View::GetClassName() const { | |
| 534 return kViewClassName; | |
| 535 } | |
| 536 | |
| 537 View* View::GetAncestorWithClassName(const std::string& name) { | |
| 538 for (View* view = this; view; view = view->parent_) { | |
| 539 if (view->GetClassName() == name) | |
| 540 return view; | |
| 541 } | |
| 542 return NULL; | |
| 543 } | |
| 544 | |
| 545 const View* View::GetViewByID(int id) const { | |
| 546 if (id == id_) | |
| 547 return const_cast<View*>(this); | |
| 548 | |
| 549 for (int i = 0, count = child_count(); i < count; ++i) { | |
| 550 const View* view = child_at(i)->GetViewByID(id); | |
| 551 if (view) | |
| 552 return view; | |
| 553 } | |
| 554 return NULL; | |
| 555 } | |
| 556 | |
| 557 View* View::GetViewByID(int id) { | |
| 558 return const_cast<View*>(const_cast<const View*>(this)->GetViewByID(id)); | |
| 559 } | |
| 560 | |
| 561 void View::SetGroup(int gid) { | |
| 562 // Don't change the group id once it's set. | |
| 563 DCHECK(group_ == -1 || group_ == gid); | |
| 564 group_ = gid; | |
| 565 } | |
| 566 | |
| 567 int View::GetGroup() const { | |
| 568 return group_; | |
| 569 } | |
| 570 | |
| 571 bool View::IsGroupFocusTraversable() const { | |
| 572 return true; | |
| 573 } | |
| 574 | |
| 575 void View::GetViewsInGroup(int group, Views* views) { | |
| 576 if (group_ == group) | |
| 577 views->push_back(this); | |
| 578 | |
| 579 for (int i = 0, count = child_count(); i < count; ++i) | |
| 580 child_at(i)->GetViewsInGroup(group, views); | |
| 581 } | |
| 582 | |
| 583 View* View::GetSelectedViewForGroup(int group) { | |
| 584 Views views; | |
| 585 GetWidget()->GetRootView()->GetViewsInGroup(group, &views); | |
| 586 return views.empty() ? NULL : views[0]; | |
| 587 } | |
| 588 | |
| 589 // Coordinate conversion ------------------------------------------------------- | |
| 590 | |
| 591 // static | |
| 592 void View::ConvertPointToView(const View* source, | |
| 593 const View* target, | |
| 594 gfx::Point* point) { | |
| 595 if (source == target) | |
| 596 return; | |
| 597 | |
| 598 // |source| can be NULL. | |
| 599 const View* root = GetHierarchyRoot(target); | |
| 600 if (source) { | |
| 601 CHECK_EQ(GetHierarchyRoot(source), root); | |
| 602 | |
| 603 if (source != root) | |
| 604 source->ConvertPointForAncestor(root, point); | |
| 605 } | |
| 606 | |
| 607 if (target != root) | |
| 608 target->ConvertPointFromAncestor(root, point); | |
| 609 | |
| 610 // API defines NULL |source| as returning the point in screen coordinates. | |
| 611 if (!source) { | |
| 612 *point = point->Subtract( | |
| 613 root->GetWidget()->GetClientAreaScreenBounds().origin()); | |
| 614 } | |
| 615 } | |
| 616 | |
| 617 // static | |
| 618 void View::ConvertPointToWidget(const View* src, gfx::Point* p) { | |
| 619 DCHECK(src); | |
| 620 DCHECK(p); | |
| 621 | |
| 622 src->ConvertPointForAncestor(NULL, p); | |
| 623 } | |
| 624 | |
| 625 // static | |
| 626 void View::ConvertPointFromWidget(const View* dest, gfx::Point* p) { | |
| 627 DCHECK(dest); | |
| 628 DCHECK(p); | |
| 629 | |
| 630 dest->ConvertPointFromAncestor(NULL, p); | |
| 631 } | |
| 632 | |
| 633 // static | |
| 634 void View::ConvertPointToScreen(const View* src, gfx::Point* p) { | |
| 635 DCHECK(src); | |
| 636 DCHECK(p); | |
| 637 | |
| 638 // If the view is not connected to a tree, there's nothing we can do. | |
| 639 const Widget* widget = src->GetWidget(); | |
| 640 if (widget) { | |
| 641 ConvertPointToWidget(src, p); | |
| 642 gfx::Rect r = widget->GetClientAreaScreenBounds(); | |
| 643 p->SetPoint(p->x() + r.x(), p->y() + r.y()); | |
| 644 } | |
| 645 } | |
| 646 | |
| 647 gfx::Rect View::ConvertRectToParent(const gfx::Rect& rect) const { | |
| 648 gfx::Rect x_rect = rect; | |
| 649 GetTransform().TransformRect(&x_rect); | |
| 650 x_rect.Offset(GetMirroredPosition()); | |
| 651 return x_rect; | |
| 652 } | |
| 653 | |
| 654 gfx::Rect View::ConvertRectToWidget(const gfx::Rect& rect) const { | |
| 655 gfx::Rect x_rect = rect; | |
| 656 for (const View* v = this; v; v = v->parent_) | |
| 657 x_rect = v->ConvertRectToParent(x_rect); | |
| 658 return x_rect; | |
| 659 } | |
| 660 | |
| 661 // Painting -------------------------------------------------------------------- | |
| 662 | |
| 663 void View::SchedulePaint() { | |
| 664 SchedulePaintInRect(GetLocalBounds()); | |
| 665 } | |
| 666 | |
| 667 void View::SchedulePaintInRect(const gfx::Rect& rect) { | |
| 668 if (!IsVisible() || !painting_enabled_) | |
| 669 return; | |
| 670 | |
| 671 if (layer()) { | |
| 672 layer()->SchedulePaint(rect); | |
| 673 } else if (parent_) { | |
| 674 // Translate the requested paint rect to the parent's coordinate system | |
| 675 // then pass this notification up to the parent. | |
| 676 parent_->SchedulePaintInRect(ConvertRectToParent(rect)); | |
| 677 } | |
| 678 } | |
| 679 | |
| 680 void View::Paint(gfx::Canvas* canvas) { | |
| 681 TRACE_EVENT0("views", "View::Paint"); | |
| 682 | |
| 683 ScopedCanvas scoped_canvas(canvas); | |
| 684 | |
| 685 // Paint this View and its children, setting the clip rect to the bounds | |
| 686 // of this View and translating the origin to the local bounds' top left | |
| 687 // point. | |
| 688 // | |
| 689 // Note that the X (or left) position we pass to ClipRectInt takes into | |
| 690 // consideration whether or not the view uses a right-to-left layout so that | |
| 691 // we paint our view in its mirrored position if need be. | |
| 692 if (!canvas->ClipRect(gfx::Rect(GetMirroredX(), y(), | |
| 693 width() - static_cast<int>(clip_x_), | |
| 694 height() - static_cast<int>(clip_y_)))) { | |
| 695 return; | |
| 696 } | |
| 697 // Non-empty clip, translate the graphics such that 0,0 corresponds to | |
| 698 // where this view is located (related to its parent). | |
| 699 canvas->Translate(GetMirroredPosition()); | |
| 700 canvas->Transform(GetTransform()); | |
| 701 | |
| 702 PaintCommon(canvas); | |
| 703 } | |
| 704 | |
| 705 ThemeProvider* View::GetThemeProvider() const { | |
| 706 const Widget* widget = GetWidget(); | |
| 707 return widget ? widget->GetThemeProvider() : NULL; | |
| 708 } | |
| 709 | |
| 710 // Accelerated Painting -------------------------------------------------------- | |
| 711 | |
| 712 // static | |
| 713 void View::set_use_acceleration_when_possible(bool use) { | |
| 714 use_acceleration_when_possible = use; | |
| 715 } | |
| 716 | |
| 717 // static | |
| 718 bool View::get_use_acceleration_when_possible() { | |
| 719 return use_acceleration_when_possible; | |
| 720 } | |
| 721 | |
| 722 // Input ----------------------------------------------------------------------- | |
| 723 | |
| 724 View* View::GetEventHandlerForPoint(const gfx::Point& point) { | |
| 725 // Walk the child Views recursively looking for the View that most | |
| 726 // tightly encloses the specified point. | |
| 727 for (int i = child_count() - 1; i >= 0; --i) { | |
| 728 View* child = child_at(i); | |
| 729 if (!child->IsVisible()) | |
| 730 continue; | |
| 731 | |
| 732 gfx::Point point_in_child_coords(point); | |
| 733 View::ConvertPointToView(this, child, &point_in_child_coords); | |
| 734 if (child->HitTest(point_in_child_coords)) | |
| 735 return child->GetEventHandlerForPoint(point_in_child_coords); | |
| 736 } | |
| 737 return this; | |
| 738 } | |
| 739 | |
| 740 gfx::NativeCursor View::GetCursor(const MouseEvent& event) { | |
| 741 #if defined(OS_WIN) && !defined(USE_AURA) | |
| 742 static HCURSOR arrow = LoadCursor(NULL, IDC_ARROW); | |
| 743 return arrow; | |
| 744 #else | |
| 745 return gfx::kNullCursor; | |
| 746 #endif | |
| 747 } | |
| 748 | |
| 749 bool View::HitTest(const gfx::Point& l) const { | |
| 750 if (GetLocalBounds().Contains(l)) { | |
| 751 if (HasHitTestMask()) { | |
| 752 gfx::Path mask; | |
| 753 GetHitTestMask(&mask); | |
| 754 #if defined(USE_AURA) | |
| 755 // TODO: should we use this every where? | |
| 756 SkRegion clip_region; | |
| 757 clip_region.setRect(0, 0, width(), height()); | |
| 758 SkRegion mask_region; | |
| 759 return mask_region.setPath(mask, clip_region) && | |
| 760 mask_region.contains(l.x(), l.y()); | |
| 761 #elif defined(OS_WIN) | |
| 762 base::win::ScopedRegion rgn(mask.CreateNativeRegion()); | |
| 763 return !!PtInRegion(rgn, l.x(), l.y()); | |
| 764 #elif defined(TOOLKIT_USES_GTK) | |
| 765 ui::ScopedRegion rgn(mask.CreateNativeRegion()); | |
| 766 return gdk_region_point_in(rgn.Get(), l.x(), l.y()); | |
| 767 #endif | |
| 768 } | |
| 769 // No mask, but inside our bounds. | |
| 770 return true; | |
| 771 } | |
| 772 // Outside our bounds. | |
| 773 return false; | |
| 774 } | |
| 775 | |
| 776 bool View::OnMousePressed(const MouseEvent& event) { | |
| 777 return false; | |
| 778 } | |
| 779 | |
| 780 bool View::OnMouseDragged(const MouseEvent& event) { | |
| 781 return false; | |
| 782 } | |
| 783 | |
| 784 void View::OnMouseReleased(const MouseEvent& event) { | |
| 785 } | |
| 786 | |
| 787 void View::OnMouseCaptureLost() { | |
| 788 } | |
| 789 | |
| 790 void View::OnMouseMoved(const MouseEvent& event) { | |
| 791 } | |
| 792 | |
| 793 void View::OnMouseEntered(const MouseEvent& event) { | |
| 794 } | |
| 795 | |
| 796 void View::OnMouseExited(const MouseEvent& event) { | |
| 797 } | |
| 798 | |
| 799 ui::TouchStatus View::OnTouchEvent(const TouchEvent& event) { | |
| 800 DVLOG(1) << "visited the OnTouchEvent"; | |
| 801 return ui::TOUCH_STATUS_UNKNOWN; | |
| 802 } | |
| 803 | |
| 804 void View::SetMouseHandler(View *new_mouse_handler) { | |
| 805 // It is valid for new_mouse_handler to be NULL | |
| 806 if (parent_) | |
| 807 parent_->SetMouseHandler(new_mouse_handler); | |
| 808 } | |
| 809 | |
| 810 bool View::OnKeyPressed(const KeyEvent& event) { | |
| 811 return false; | |
| 812 } | |
| 813 | |
| 814 bool View::OnKeyReleased(const KeyEvent& event) { | |
| 815 return false; | |
| 816 } | |
| 817 | |
| 818 bool View::OnMouseWheel(const MouseWheelEvent& event) { | |
| 819 return false; | |
| 820 } | |
| 821 | |
| 822 ui::TextInputClient* View::GetTextInputClient() { | |
| 823 return NULL; | |
| 824 } | |
| 825 | |
| 826 InputMethod* View::GetInputMethod() { | |
| 827 Widget* widget = GetWidget(); | |
| 828 return widget ? widget->GetInputMethod() : NULL; | |
| 829 } | |
| 830 | |
| 831 // Accelerators ---------------------------------------------------------------- | |
| 832 | |
| 833 void View::AddAccelerator(const ui::Accelerator& accelerator) { | |
| 834 if (!accelerators_.get()) | |
| 835 accelerators_.reset(new std::vector<ui::Accelerator>()); | |
| 836 | |
| 837 DCHECK(std::find(accelerators_->begin(), accelerators_->end(), accelerator) == | |
| 838 accelerators_->end()) | |
| 839 << "Registering the same accelerator multiple times"; | |
| 840 | |
| 841 accelerators_->push_back(accelerator); | |
| 842 RegisterPendingAccelerators(); | |
| 843 } | |
| 844 | |
| 845 void View::RemoveAccelerator(const ui::Accelerator& accelerator) { | |
| 846 if (!accelerators_.get()) { | |
| 847 NOTREACHED() << "Removing non-existing accelerator"; | |
| 848 return; | |
| 849 } | |
| 850 | |
| 851 std::vector<ui::Accelerator>::iterator i( | |
| 852 std::find(accelerators_->begin(), accelerators_->end(), accelerator)); | |
| 853 if (i == accelerators_->end()) { | |
| 854 NOTREACHED() << "Removing non-existing accelerator"; | |
| 855 return; | |
| 856 } | |
| 857 | |
| 858 size_t index = i - accelerators_->begin(); | |
| 859 accelerators_->erase(i); | |
| 860 if (index >= registered_accelerator_count_) { | |
| 861 // The accelerator is not registered to FocusManager. | |
| 862 return; | |
| 863 } | |
| 864 --registered_accelerator_count_; | |
| 865 | |
| 866 // Providing we are attached to a Widget and registered with a focus manager, | |
| 867 // we should de-register from that focus manager now. | |
| 868 if (GetWidget() && accelerator_focus_manager_) | |
| 869 accelerator_focus_manager_->UnregisterAccelerator(accelerator, this); | |
| 870 } | |
| 871 | |
| 872 void View::ResetAccelerators() { | |
| 873 if (accelerators_.get()) | |
| 874 UnregisterAccelerators(false); | |
| 875 } | |
| 876 | |
| 877 bool View::AcceleratorPressed(const ui::Accelerator& accelerator) { | |
| 878 return false; | |
| 879 } | |
| 880 | |
| 881 // Focus ----------------------------------------------------------------------- | |
| 882 | |
| 883 bool View::HasFocus() const { | |
| 884 const FocusManager* focus_manager = GetFocusManager(); | |
| 885 return focus_manager && (focus_manager->GetFocusedView() == this); | |
| 886 } | |
| 887 | |
| 888 View* View::GetNextFocusableView() { | |
| 889 return next_focusable_view_; | |
| 890 } | |
| 891 | |
| 892 const View* View::GetNextFocusableView() const { | |
| 893 return next_focusable_view_; | |
| 894 } | |
| 895 | |
| 896 View* View::GetPreviousFocusableView() { | |
| 897 return previous_focusable_view_; | |
| 898 } | |
| 899 | |
| 900 void View::SetNextFocusableView(View* view) { | |
| 901 view->previous_focusable_view_ = this; | |
| 902 next_focusable_view_ = view; | |
| 903 } | |
| 904 | |
| 905 bool View::IsFocusableInRootView() const { | |
| 906 return IsFocusable() && IsVisibleInRootView(); | |
| 907 } | |
| 908 | |
| 909 bool View::IsAccessibilityFocusableInRootView() const { | |
| 910 return (focusable_ || accessibility_focusable_) && IsEnabled() && | |
| 911 IsVisibleInRootView(); | |
| 912 } | |
| 913 | |
| 914 FocusManager* View::GetFocusManager() { | |
| 915 Widget* widget = GetWidget(); | |
| 916 return widget ? widget->GetFocusManager() : NULL; | |
| 917 } | |
| 918 | |
| 919 const FocusManager* View::GetFocusManager() const { | |
| 920 const Widget* widget = GetWidget(); | |
| 921 return widget ? widget->GetFocusManager() : NULL; | |
| 922 } | |
| 923 | |
| 924 void View::RequestFocus() { | |
| 925 FocusManager* focus_manager = GetFocusManager(); | |
| 926 if (focus_manager && IsFocusableInRootView()) | |
| 927 focus_manager->SetFocusedView(this); | |
| 928 } | |
| 929 | |
| 930 bool View::SkipDefaultKeyEventProcessing(const KeyEvent& event) { | |
| 931 return false; | |
| 932 } | |
| 933 | |
| 934 FocusTraversable* View::GetFocusTraversable() { | |
| 935 return NULL; | |
| 936 } | |
| 937 | |
| 938 FocusTraversable* View::GetPaneFocusTraversable() { | |
| 939 return NULL; | |
| 940 } | |
| 941 | |
| 942 // Tooltips -------------------------------------------------------------------- | |
| 943 | |
| 944 bool View::GetTooltipText(const gfx::Point& p, string16* tooltip) const { | |
| 945 return false; | |
| 946 } | |
| 947 | |
| 948 bool View::GetTooltipTextOrigin(const gfx::Point& p, gfx::Point* loc) const { | |
| 949 return false; | |
| 950 } | |
| 951 | |
| 952 // Context menus --------------------------------------------------------------- | |
| 953 | |
| 954 void View::ShowContextMenu(const gfx::Point& p, bool is_mouse_gesture) { | |
| 955 if (!context_menu_controller_) | |
| 956 return; | |
| 957 | |
| 958 context_menu_controller_->ShowContextMenuForView(this, p, is_mouse_gesture); | |
| 959 } | |
| 960 | |
| 961 // Drag and drop --------------------------------------------------------------- | |
| 962 | |
| 963 bool View::GetDropFormats( | |
| 964 int* formats, | |
| 965 std::set<OSExchangeData::CustomFormat>* custom_formats) { | |
| 966 return false; | |
| 967 } | |
| 968 | |
| 969 bool View::AreDropTypesRequired() { | |
| 970 return false; | |
| 971 } | |
| 972 | |
| 973 bool View::CanDrop(const OSExchangeData& data) { | |
| 974 // TODO(sky): when I finish up migration, this should default to true. | |
| 975 return false; | |
| 976 } | |
| 977 | |
| 978 void View::OnDragEntered(const DropTargetEvent& event) { | |
| 979 } | |
| 980 | |
| 981 int View::OnDragUpdated(const DropTargetEvent& event) { | |
| 982 return ui::DragDropTypes::DRAG_NONE; | |
| 983 } | |
| 984 | |
| 985 void View::OnDragExited() { | |
| 986 } | |
| 987 | |
| 988 int View::OnPerformDrop(const DropTargetEvent& event) { | |
| 989 return ui::DragDropTypes::DRAG_NONE; | |
| 990 } | |
| 991 | |
| 992 void View::OnDragDone() { | |
| 993 } | |
| 994 | |
| 995 // static | |
| 996 bool View::ExceededDragThreshold(int delta_x, int delta_y) { | |
| 997 return (abs(delta_x) > GetHorizontalDragThreshold() || | |
| 998 abs(delta_y) > GetVerticalDragThreshold()); | |
| 999 } | |
| 1000 | |
| 1001 // Scrolling ------------------------------------------------------------------- | |
| 1002 | |
| 1003 void View::ScrollRectToVisible(const gfx::Rect& rect) { | |
| 1004 // We must take RTL UI mirroring into account when adjusting the position of | |
| 1005 // the region. | |
| 1006 if (parent_) { | |
| 1007 gfx::Rect scroll_rect(rect); | |
| 1008 scroll_rect.Offset(GetMirroredX(), y()); | |
| 1009 parent_->ScrollRectToVisible(scroll_rect); | |
| 1010 } | |
| 1011 } | |
| 1012 | |
| 1013 int View::GetPageScrollIncrement(ScrollView* scroll_view, | |
| 1014 bool is_horizontal, bool is_positive) { | |
| 1015 return 0; | |
| 1016 } | |
| 1017 | |
| 1018 int View::GetLineScrollIncrement(ScrollView* scroll_view, | |
| 1019 bool is_horizontal, bool is_positive) { | |
| 1020 return 0; | |
| 1021 } | |
| 1022 | |
| 1023 //////////////////////////////////////////////////////////////////////////////// | |
| 1024 // View, protected: | |
| 1025 | |
| 1026 // Size and disposition -------------------------------------------------------- | |
| 1027 | |
| 1028 void View::OnBoundsChanged(const gfx::Rect& previous_bounds) { | |
| 1029 } | |
| 1030 | |
| 1031 void View::PreferredSizeChanged() { | |
| 1032 InvalidateLayout(); | |
| 1033 if (parent_) | |
| 1034 parent_->ChildPreferredSizeChanged(this); | |
| 1035 } | |
| 1036 | |
| 1037 bool View::NeedsNotificationWhenVisibleBoundsChange() const { | |
| 1038 return false; | |
| 1039 } | |
| 1040 | |
| 1041 void View::OnVisibleBoundsChanged() { | |
| 1042 } | |
| 1043 | |
| 1044 // Tree operations ------------------------------------------------------------- | |
| 1045 | |
| 1046 void View::ViewHierarchyChanged(bool is_add, View* parent, View* child) { | |
| 1047 } | |
| 1048 | |
| 1049 void View::VisibilityChanged(View* starting_from, bool is_visible) { | |
| 1050 } | |
| 1051 | |
| 1052 void View::NativeViewHierarchyChanged(bool attached, | |
| 1053 gfx::NativeView native_view, | |
| 1054 internal::RootView* root_view) { | |
| 1055 FocusManager* focus_manager = GetFocusManager(); | |
| 1056 if (!accelerator_registration_delayed_ && | |
| 1057 accelerator_focus_manager_ && | |
| 1058 accelerator_focus_manager_ != focus_manager) { | |
| 1059 UnregisterAccelerators(true); | |
| 1060 accelerator_registration_delayed_ = true; | |
| 1061 } | |
| 1062 if (accelerator_registration_delayed_ && attached) { | |
| 1063 if (focus_manager) { | |
| 1064 RegisterPendingAccelerators(); | |
| 1065 accelerator_registration_delayed_ = false; | |
| 1066 } | |
| 1067 } | |
| 1068 } | |
| 1069 | |
| 1070 // Painting -------------------------------------------------------------------- | |
| 1071 | |
| 1072 void View::PaintChildren(gfx::Canvas* canvas) { | |
| 1073 TRACE_EVENT0("views", "View::PaintChildren"); | |
| 1074 for (int i = 0, count = child_count(); i < count; ++i) | |
| 1075 if (!child_at(i)->layer()) | |
| 1076 child_at(i)->Paint(canvas); | |
| 1077 } | |
| 1078 | |
| 1079 void View::OnPaint(gfx::Canvas* canvas) { | |
| 1080 TRACE_EVENT0("views", "View::OnPaint"); | |
| 1081 OnPaintBackground(canvas); | |
| 1082 OnPaintFocusBorder(canvas); | |
| 1083 OnPaintBorder(canvas); | |
| 1084 } | |
| 1085 | |
| 1086 void View::OnPaintBackground(gfx::Canvas* canvas) { | |
| 1087 if (background_.get()) { | |
| 1088 TRACE_EVENT2("views", "View::OnPaintBackground", | |
| 1089 "width", canvas->GetSkCanvas()->getDevice()->width(), | |
| 1090 "height", canvas->GetSkCanvas()->getDevice()->height()); | |
| 1091 background_->Paint(canvas, this); | |
| 1092 } | |
| 1093 } | |
| 1094 | |
| 1095 void View::OnPaintBorder(gfx::Canvas* canvas) { | |
| 1096 if (border_.get()) { | |
| 1097 TRACE_EVENT2("views", "View::OnPaintBorder", | |
| 1098 "width", canvas->GetSkCanvas()->getDevice()->width(), | |
| 1099 "height", canvas->GetSkCanvas()->getDevice()->height()); | |
| 1100 border_->Paint(*this, canvas); | |
| 1101 } | |
| 1102 } | |
| 1103 | |
| 1104 void View::OnPaintFocusBorder(gfx::Canvas* canvas) { | |
| 1105 if ((IsFocusable() || IsAccessibilityFocusableInRootView()) && HasFocus()) { | |
| 1106 TRACE_EVENT2("views", "views::OnPaintFocusBorder", | |
| 1107 "width", canvas->GetSkCanvas()->getDevice()->width(), | |
| 1108 "height", canvas->GetSkCanvas()->getDevice()->height()); | |
| 1109 canvas->DrawFocusRect(GetLocalBounds()); | |
| 1110 } | |
| 1111 } | |
| 1112 | |
| 1113 // Accelerated Painting -------------------------------------------------------- | |
| 1114 | |
| 1115 void View::SetFillsBoundsOpaquely(bool fills_bounds_opaquely) { | |
| 1116 // This method should not have the side-effect of creating the layer. | |
| 1117 if (layer()) | |
| 1118 layer()->SetFillsBoundsOpaquely(fills_bounds_opaquely); | |
| 1119 } | |
| 1120 | |
| 1121 bool View::SetExternalTexture(ui::Texture* texture) { | |
| 1122 DCHECK(texture); | |
| 1123 SetPaintToLayer(true); | |
| 1124 | |
| 1125 layer()->SetExternalTexture(texture); | |
| 1126 | |
| 1127 // Child views must not paint into the external texture. So make sure each | |
| 1128 // child view has its own layer to paint into. | |
| 1129 for (Views::iterator i = children_.begin(); i != children_.end(); ++i) | |
| 1130 (*i)->SetPaintToLayer(true); | |
| 1131 | |
| 1132 SchedulePaintInRect(GetLocalBounds()); | |
| 1133 return true; | |
| 1134 } | |
| 1135 | |
| 1136 void View::CalculateOffsetToAncestorWithLayer(gfx::Point* offset, | |
| 1137 ui::Layer** layer_parent) { | |
| 1138 if (layer()) { | |
| 1139 if (layer_parent) | |
| 1140 *layer_parent = layer(); | |
| 1141 return; | |
| 1142 } | |
| 1143 if (!parent_) | |
| 1144 return; | |
| 1145 | |
| 1146 offset->Offset(x(), y()); | |
| 1147 parent_->CalculateOffsetToAncestorWithLayer(offset, layer_parent); | |
| 1148 } | |
| 1149 | |
| 1150 void View::MoveLayerToParent(ui::Layer* parent_layer, | |
| 1151 const gfx::Point& point) { | |
| 1152 gfx::Point local_point(point); | |
| 1153 if (parent_layer != layer()) | |
| 1154 local_point.Offset(x(), y()); | |
| 1155 if (layer() && parent_layer != layer()) { | |
| 1156 parent_layer->Add(layer()); | |
| 1157 layer()->SetBounds(gfx::Rect(local_point.x(), local_point.y(), | |
| 1158 width(), height())); | |
| 1159 } else { | |
| 1160 for (int i = 0, count = child_count(); i < count; ++i) | |
| 1161 child_at(i)->MoveLayerToParent(parent_layer, local_point); | |
| 1162 } | |
| 1163 } | |
| 1164 | |
| 1165 void View::UpdateLayerVisibility() { | |
| 1166 if (!use_acceleration_when_possible) | |
| 1167 return; | |
| 1168 bool visible = IsVisible(); | |
| 1169 for (const View* v = parent_; visible && v && !v->layer(); v = v->parent_) | |
| 1170 visible = v->IsVisible(); | |
| 1171 | |
| 1172 UpdateChildLayerVisibility(visible); | |
| 1173 } | |
| 1174 | |
| 1175 void View::UpdateChildLayerVisibility(bool ancestor_visible) { | |
| 1176 if (layer()) { | |
| 1177 layer()->SetVisible(ancestor_visible && IsVisible()); | |
| 1178 } else { | |
| 1179 for (int i = 0, count = child_count(); i < count; ++i) | |
| 1180 child_at(i)->UpdateChildLayerVisibility(ancestor_visible && IsVisible()); | |
| 1181 } | |
| 1182 } | |
| 1183 | |
| 1184 void View::UpdateChildLayerBounds(const gfx::Point& offset) { | |
| 1185 if (layer()) { | |
| 1186 layer()->SetBounds(gfx::Rect(offset.x(), offset.y(), width(), height())); | |
| 1187 } else { | |
| 1188 for (int i = 0, count = child_count(); i < count; ++i) { | |
| 1189 gfx::Point new_offset(offset.x() + child_at(i)->x(), | |
| 1190 offset.y() + child_at(i)->y()); | |
| 1191 child_at(i)->UpdateChildLayerBounds(new_offset); | |
| 1192 } | |
| 1193 } | |
| 1194 } | |
| 1195 | |
| 1196 void View::OnPaintLayer(gfx::Canvas* canvas) { | |
| 1197 if (!layer() || !layer()->fills_bounds_opaquely()) | |
| 1198 canvas->GetSkCanvas()->drawColor(SK_ColorBLACK, SkXfermode::kClear_Mode); | |
| 1199 PaintCommon(canvas); | |
| 1200 } | |
| 1201 | |
| 1202 void View::ReorderLayers() { | |
| 1203 View* v = this; | |
| 1204 while (v && !v->layer()) | |
| 1205 v = v->parent(); | |
| 1206 | |
| 1207 // Forward to widget in case we're in a NativeWidgetView. | |
| 1208 if (!v) { | |
| 1209 if (GetWidget()) | |
| 1210 GetWidget()->ReorderLayers(); | |
| 1211 } else { | |
| 1212 for (Views::const_iterator i(v->children_.begin()); | |
| 1213 i != v->children_.end(); | |
| 1214 ++i) | |
| 1215 (*i)->ReorderChildLayers(v->layer()); | |
| 1216 } | |
| 1217 } | |
| 1218 | |
| 1219 void View::ReorderChildLayers(ui::Layer* parent_layer) { | |
| 1220 if (layer()) { | |
| 1221 DCHECK_EQ(parent_layer, layer()->parent()); | |
| 1222 parent_layer->StackAtTop(layer()); | |
| 1223 } else { | |
| 1224 for (Views::const_iterator i(children_.begin()); i != children_.end(); ++i) | |
| 1225 (*i)->ReorderChildLayers(parent_layer); | |
| 1226 } | |
| 1227 } | |
| 1228 | |
| 1229 // Input ----------------------------------------------------------------------- | |
| 1230 | |
| 1231 bool View::HasHitTestMask() const { | |
| 1232 return false; | |
| 1233 } | |
| 1234 | |
| 1235 void View::GetHitTestMask(gfx::Path* mask) const { | |
| 1236 DCHECK(mask); | |
| 1237 } | |
| 1238 | |
| 1239 // Focus ----------------------------------------------------------------------- | |
| 1240 | |
| 1241 bool View::IsFocusable() const { | |
| 1242 return focusable_ && IsEnabled() && IsVisible(); | |
| 1243 } | |
| 1244 | |
| 1245 void View::OnFocus() { | |
| 1246 // TODO(beng): Investigate whether it's possible for us to move this to | |
| 1247 // Focus(). | |
| 1248 // By default, we clear the native focus. This ensures that no visible native | |
| 1249 // view as the focus and that we still receive keyboard inputs. | |
| 1250 FocusManager* focus_manager = GetFocusManager(); | |
| 1251 if (focus_manager) | |
| 1252 focus_manager->ClearNativeFocus(); | |
| 1253 | |
| 1254 // TODO(beng): Investigate whether it's possible for us to move this to | |
| 1255 // Focus(). | |
| 1256 // Notify assistive technologies of the focus change. | |
| 1257 GetWidget()->NotifyAccessibilityEvent( | |
| 1258 this, ui::AccessibilityTypes::EVENT_FOCUS, true); | |
| 1259 } | |
| 1260 | |
| 1261 void View::OnBlur() { | |
| 1262 } | |
| 1263 | |
| 1264 void View::Focus() { | |
| 1265 SchedulePaint(); | |
| 1266 OnFocus(); | |
| 1267 } | |
| 1268 | |
| 1269 void View::Blur() { | |
| 1270 SchedulePaint(); | |
| 1271 OnBlur(); | |
| 1272 } | |
| 1273 | |
| 1274 // Tooltips -------------------------------------------------------------------- | |
| 1275 | |
| 1276 void View::TooltipTextChanged() { | |
| 1277 Widget* widget = GetWidget(); | |
| 1278 // TooltipManager may be null if there is a problem creating it. | |
| 1279 if (widget && widget->native_widget_private()->GetTooltipManager()) { | |
| 1280 widget->native_widget_private()->GetTooltipManager()-> | |
| 1281 TooltipTextChanged(this); | |
| 1282 } | |
| 1283 } | |
| 1284 | |
| 1285 // Context menus --------------------------------------------------------------- | |
| 1286 | |
| 1287 gfx::Point View::GetKeyboardContextMenuLocation() { | |
| 1288 gfx::Rect vis_bounds = GetVisibleBounds(); | |
| 1289 gfx::Point screen_point(vis_bounds.x() + vis_bounds.width() / 2, | |
| 1290 vis_bounds.y() + vis_bounds.height() / 2); | |
| 1291 ConvertPointToScreen(this, &screen_point); | |
| 1292 return screen_point; | |
| 1293 } | |
| 1294 | |
| 1295 // Drag and drop --------------------------------------------------------------- | |
| 1296 | |
| 1297 int View::GetDragOperations(const gfx::Point& press_pt) { | |
| 1298 return drag_controller_ ? | |
| 1299 drag_controller_->GetDragOperationsForView(this, press_pt) : | |
| 1300 ui::DragDropTypes::DRAG_NONE; | |
| 1301 } | |
| 1302 | |
| 1303 void View::WriteDragData(const gfx::Point& press_pt, OSExchangeData* data) { | |
| 1304 DCHECK(drag_controller_); | |
| 1305 drag_controller_->WriteDragDataForView(this, press_pt, data); | |
| 1306 } | |
| 1307 | |
| 1308 bool View::InDrag() { | |
| 1309 Widget* widget = GetWidget(); | |
| 1310 return widget ? widget->dragged_view() == this : false; | |
| 1311 } | |
| 1312 | |
| 1313 // Debugging ------------------------------------------------------------------- | |
| 1314 | |
| 1315 #if !defined(NDEBUG) | |
| 1316 | |
| 1317 std::string View::PrintViewGraph(bool first) { | |
| 1318 return DoPrintViewGraph(first, this); | |
| 1319 } | |
| 1320 | |
| 1321 std::string View::DoPrintViewGraph(bool first, View* view_with_children) { | |
| 1322 // 64-bit pointer = 16 bytes of hex + "0x" + '\0' = 19. | |
| 1323 const size_t kMaxPointerStringLength = 19; | |
| 1324 | |
| 1325 std::string result; | |
| 1326 | |
| 1327 if (first) | |
| 1328 result.append("digraph {\n"); | |
| 1329 | |
| 1330 // Node characteristics. | |
| 1331 char p[kMaxPointerStringLength]; | |
| 1332 | |
| 1333 size_t baseNameIndex = GetClassName().find_last_of('/'); | |
| 1334 if (baseNameIndex == std::string::npos) | |
| 1335 baseNameIndex = 0; | |
| 1336 else | |
| 1337 baseNameIndex++; | |
| 1338 | |
| 1339 char bounds_buffer[512]; | |
| 1340 | |
| 1341 // Information about current node. | |
| 1342 base::snprintf(p, arraysize(bounds_buffer), "%p", view_with_children); | |
| 1343 result.append(" N"); | |
| 1344 result.append(p+2); | |
| 1345 result.append(" [label=\""); | |
| 1346 | |
| 1347 result.append(GetClassName().substr(baseNameIndex).c_str()); | |
| 1348 | |
| 1349 base::snprintf(bounds_buffer, | |
| 1350 arraysize(bounds_buffer), | |
| 1351 "\\n bounds: (%d, %d), (%dx%d)", | |
| 1352 this->bounds().x(), | |
| 1353 this->bounds().y(), | |
| 1354 this->bounds().width(), | |
| 1355 this->bounds().height()); | |
| 1356 result.append(bounds_buffer); | |
| 1357 | |
| 1358 if (layer() && !layer()->hole_rect().IsEmpty()) { | |
| 1359 base::snprintf(bounds_buffer, | |
| 1360 arraysize(bounds_buffer), | |
| 1361 "\\n hole bounds: (%d, %d), (%dx%d)", | |
| 1362 layer()->hole_rect().x(), | |
| 1363 layer()->hole_rect().y(), | |
| 1364 layer()->hole_rect().width(), | |
| 1365 layer()->hole_rect().height()); | |
| 1366 result.append(bounds_buffer); | |
| 1367 } | |
| 1368 | |
| 1369 if (GetTransform().HasChange()) { | |
| 1370 gfx::Point translation; | |
| 1371 float rotation; | |
| 1372 gfx::Point3f scale; | |
| 1373 if (ui::InterpolatedTransform::FactorTRS(GetTransform(), | |
| 1374 &translation, | |
| 1375 &rotation, | |
| 1376 &scale)) { | |
| 1377 if (translation != gfx::Point(0, 0)) { | |
| 1378 base::snprintf(bounds_buffer, | |
| 1379 arraysize(bounds_buffer), | |
| 1380 "\\n translation: (%d, %d)", | |
| 1381 translation.x(), | |
| 1382 translation.y()); | |
| 1383 result.append(bounds_buffer); | |
| 1384 } | |
| 1385 | |
| 1386 if (fabs(rotation) > 1e-5) { | |
| 1387 base::snprintf(bounds_buffer, | |
| 1388 arraysize(bounds_buffer), | |
| 1389 "\\n rotation: %3.2f", rotation); | |
| 1390 result.append(bounds_buffer); | |
| 1391 } | |
| 1392 | |
| 1393 if (scale.AsPoint() != gfx::Point(0, 0)) { | |
| 1394 base::snprintf(bounds_buffer, | |
| 1395 arraysize(bounds_buffer), | |
| 1396 "\\n scale: (%2.4f, %2.4f)", | |
| 1397 scale.x(), | |
| 1398 scale.y()); | |
| 1399 result.append(bounds_buffer); | |
| 1400 } | |
| 1401 } | |
| 1402 } | |
| 1403 | |
| 1404 result.append("\""); | |
| 1405 if (!parent_) | |
| 1406 result.append(", shape=box"); | |
| 1407 if (layer()) { | |
| 1408 if (layer()->texture()) | |
| 1409 result.append(", color=green"); | |
| 1410 else | |
| 1411 result.append(", color=red"); | |
| 1412 | |
| 1413 if (layer()->fills_bounds_opaquely()) | |
| 1414 result.append(", style=filled"); | |
| 1415 } | |
| 1416 result.append("]\n"); | |
| 1417 | |
| 1418 // Link to parent. | |
| 1419 if (parent_) { | |
| 1420 char pp[kMaxPointerStringLength]; | |
| 1421 | |
| 1422 base::snprintf(pp, kMaxPointerStringLength, "%p", parent_); | |
| 1423 result.append(" N"); | |
| 1424 result.append(pp+2); | |
| 1425 result.append(" -> N"); | |
| 1426 result.append(p+2); | |
| 1427 result.append("\n"); | |
| 1428 } | |
| 1429 | |
| 1430 // Children. | |
| 1431 for (int i = 0, count = view_with_children->child_count(); i < count; ++i) | |
| 1432 result.append(view_with_children->child_at(i)->PrintViewGraph(false)); | |
| 1433 | |
| 1434 if (first) | |
| 1435 result.append("}\n"); | |
| 1436 | |
| 1437 return result; | |
| 1438 } | |
| 1439 | |
| 1440 #endif | |
| 1441 | |
| 1442 //////////////////////////////////////////////////////////////////////////////// | |
| 1443 // View, private: | |
| 1444 | |
| 1445 // DropInfo -------------------------------------------------------------------- | |
| 1446 | |
| 1447 void View::DragInfo::Reset() { | |
| 1448 possible_drag = false; | |
| 1449 start_pt = gfx::Point(); | |
| 1450 } | |
| 1451 | |
| 1452 void View::DragInfo::PossibleDrag(const gfx::Point& p) { | |
| 1453 possible_drag = true; | |
| 1454 start_pt = p; | |
| 1455 } | |
| 1456 | |
| 1457 // Painting -------------------------------------------------------------------- | |
| 1458 | |
| 1459 void View::SchedulePaintBoundsChanged(SchedulePaintType type) { | |
| 1460 // If we have a layer and the View's size did not change, we do not need to | |
| 1461 // schedule any paints since the layer will be redrawn at its new location | |
| 1462 // during the next Draw() cycle in the compositor. | |
| 1463 if (!layer() || type == SCHEDULE_PAINT_SIZE_CHANGED) { | |
| 1464 // Otherwise, if the size changes or we don't have a layer then we need to | |
| 1465 // use SchedulePaint to invalidate the area occupied by the View. | |
| 1466 SchedulePaint(); | |
| 1467 } else if (parent_ && type == SCHEDULE_PAINT_SIZE_SAME) { | |
| 1468 // The compositor doesn't Draw() until something on screen changes, so | |
| 1469 // if our position changes but nothing is being animated on screen, then | |
| 1470 // tell the compositor to redraw the scene. We know layer() exists due to | |
| 1471 // the above if clause. | |
| 1472 layer()->ScheduleDraw(); | |
| 1473 } | |
| 1474 } | |
| 1475 | |
| 1476 void View::PaintCommon(gfx::Canvas* canvas) { | |
| 1477 if (!IsVisible() || !painting_enabled_) | |
| 1478 return; | |
| 1479 | |
| 1480 { | |
| 1481 // If the View we are about to paint requested the canvas to be flipped, we | |
| 1482 // should change the transform appropriately. | |
| 1483 // The canvas mirroring is undone once the View is done painting so that we | |
| 1484 // don't pass the canvas with the mirrored transform to Views that didn't | |
| 1485 // request the canvas to be flipped. | |
| 1486 ScopedCanvas scoped(canvas); | |
| 1487 if (FlipCanvasOnPaintForRTLUI()) { | |
| 1488 canvas->Translate(gfx::Point(width(), 0)); | |
| 1489 canvas->Scale(-1, 1); | |
| 1490 } | |
| 1491 | |
| 1492 OnPaint(canvas); | |
| 1493 } | |
| 1494 | |
| 1495 PaintChildren(canvas); | |
| 1496 } | |
| 1497 | |
| 1498 // Tree operations ------------------------------------------------------------- | |
| 1499 | |
| 1500 void View::DoRemoveChildView(View* view, | |
| 1501 bool update_focus_cycle, | |
| 1502 bool update_tool_tip, | |
| 1503 bool delete_removed_view) { | |
| 1504 DCHECK(view); | |
| 1505 const Views::iterator i(std::find(children_.begin(), children_.end(), view)); | |
| 1506 scoped_ptr<View> view_to_be_deleted; | |
| 1507 if (i != children_.end()) { | |
| 1508 if (update_focus_cycle) { | |
| 1509 // Let's remove the view from the focus traversal. | |
| 1510 View* next_focusable = view->next_focusable_view_; | |
| 1511 View* prev_focusable = view->previous_focusable_view_; | |
| 1512 if (prev_focusable) | |
| 1513 prev_focusable->next_focusable_view_ = next_focusable; | |
| 1514 if (next_focusable) | |
| 1515 next_focusable->previous_focusable_view_ = prev_focusable; | |
| 1516 } | |
| 1517 | |
| 1518 if (GetWidget()) | |
| 1519 UnregisterChildrenForVisibleBoundsNotification(view); | |
| 1520 view->PropagateRemoveNotifications(this); | |
| 1521 view->parent_ = NULL; | |
| 1522 view->UpdateLayerVisibility(); | |
| 1523 | |
| 1524 if (delete_removed_view && view->parent_owned()) | |
| 1525 view_to_be_deleted.reset(view); | |
| 1526 | |
| 1527 children_.erase(i); | |
| 1528 } | |
| 1529 | |
| 1530 if (update_tool_tip) | |
| 1531 UpdateTooltip(); | |
| 1532 | |
| 1533 if (layout_manager_.get()) | |
| 1534 layout_manager_->ViewRemoved(this, view); | |
| 1535 } | |
| 1536 | |
| 1537 void View::PropagateRemoveNotifications(View* parent) { | |
| 1538 for (int i = 0, count = child_count(); i < count; ++i) | |
| 1539 child_at(i)->PropagateRemoveNotifications(parent); | |
| 1540 | |
| 1541 for (View* v = this; v; v = v->parent_) | |
| 1542 v->ViewHierarchyChangedImpl(true, false, parent, this); | |
| 1543 } | |
| 1544 | |
| 1545 void View::PropagateAddNotifications(View* parent, View* child) { | |
| 1546 for (int i = 0, count = child_count(); i < count; ++i) | |
| 1547 child_at(i)->PropagateAddNotifications(parent, child); | |
| 1548 ViewHierarchyChangedImpl(true, true, parent, child); | |
| 1549 } | |
| 1550 | |
| 1551 void View::PropagateNativeViewHierarchyChanged(bool attached, | |
| 1552 gfx::NativeView native_view, | |
| 1553 internal::RootView* root_view) { | |
| 1554 for (int i = 0, count = child_count(); i < count; ++i) | |
| 1555 child_at(i)->PropagateNativeViewHierarchyChanged(attached, | |
| 1556 native_view, | |
| 1557 root_view); | |
| 1558 NativeViewHierarchyChanged(attached, native_view, root_view); | |
| 1559 } | |
| 1560 | |
| 1561 void View::ViewHierarchyChangedImpl(bool register_accelerators, | |
| 1562 bool is_add, | |
| 1563 View* parent, | |
| 1564 View* child) { | |
| 1565 if (register_accelerators) { | |
| 1566 if (is_add) { | |
| 1567 // If you get this registration, you are part of a subtree that has been | |
| 1568 // added to the view hierarchy. | |
| 1569 if (GetFocusManager()) { | |
| 1570 RegisterPendingAccelerators(); | |
| 1571 } else { | |
| 1572 // Delay accelerator registration until visible as we do not have | |
| 1573 // focus manager until then. | |
| 1574 accelerator_registration_delayed_ = true; | |
| 1575 } | |
| 1576 } else { | |
| 1577 if (child == this) | |
| 1578 UnregisterAccelerators(true); | |
| 1579 } | |
| 1580 } | |
| 1581 | |
| 1582 if (is_add && layer() && !layer()->parent()) { | |
| 1583 UpdateParentLayer(); | |
| 1584 } else if (!is_add && child == this) { | |
| 1585 // Make sure the layers beloning to the subtree rooted at |child| get | |
| 1586 // removed from layers that do not belong in the same subtree. | |
| 1587 OrphanLayers(); | |
| 1588 } | |
| 1589 | |
| 1590 ViewHierarchyChanged(is_add, parent, child); | |
| 1591 parent->needs_layout_ = true; | |
| 1592 } | |
| 1593 | |
| 1594 // Size and disposition -------------------------------------------------------- | |
| 1595 | |
| 1596 void View::PropagateVisibilityNotifications(View* start, bool is_visible) { | |
| 1597 for (int i = 0, count = child_count(); i < count; ++i) | |
| 1598 child_at(i)->PropagateVisibilityNotifications(start, is_visible); | |
| 1599 VisibilityChangedImpl(start, is_visible); | |
| 1600 } | |
| 1601 | |
| 1602 void View::VisibilityChangedImpl(View* starting_from, bool is_visible) { | |
| 1603 if (is_visible) | |
| 1604 RegisterPendingAccelerators(); | |
| 1605 else | |
| 1606 UnregisterAccelerators(true); | |
| 1607 VisibilityChanged(starting_from, is_visible); | |
| 1608 } | |
| 1609 | |
| 1610 void View::BoundsChanged(const gfx::Rect& previous_bounds) { | |
| 1611 if (IsVisible()) { | |
| 1612 // Paint the new bounds. | |
| 1613 SchedulePaintBoundsChanged( | |
| 1614 bounds_.size() == previous_bounds.size() ? SCHEDULE_PAINT_SIZE_SAME : | |
| 1615 SCHEDULE_PAINT_SIZE_CHANGED); | |
| 1616 } | |
| 1617 | |
| 1618 if (use_acceleration_when_possible) { | |
| 1619 if (layer()) { | |
| 1620 if (parent_) { | |
| 1621 gfx::Point offset; | |
| 1622 parent_->CalculateOffsetToAncestorWithLayer(&offset, NULL); | |
| 1623 offset.Offset(x(), y()); | |
| 1624 layer()->SetBounds(gfx::Rect(offset, size())); | |
| 1625 } else { | |
| 1626 layer()->SetBounds(bounds_); | |
| 1627 } | |
| 1628 // TODO(beng): this seems redundant with the SchedulePaint at the top of | |
| 1629 // this function. explore collapsing. | |
| 1630 if (previous_bounds.size() != bounds_.size() && | |
| 1631 !layer()->layer_updated_externally()) { | |
| 1632 // If our bounds have changed then we need to update the complete | |
| 1633 // texture. | |
| 1634 layer()->SchedulePaint(GetLocalBounds()); | |
| 1635 } | |
| 1636 } else { | |
| 1637 // If our bounds have changed, then any descendant layer bounds may | |
| 1638 // have changed. Update them accordingly. | |
| 1639 gfx::Point offset; | |
| 1640 CalculateOffsetToAncestorWithLayer(&offset, NULL); | |
| 1641 UpdateChildLayerBounds(offset); | |
| 1642 } | |
| 1643 } | |
| 1644 | |
| 1645 OnBoundsChanged(previous_bounds); | |
| 1646 | |
| 1647 if (previous_bounds.size() != size()) { | |
| 1648 needs_layout_ = false; | |
| 1649 Layout(); | |
| 1650 } | |
| 1651 | |
| 1652 if (NeedsNotificationWhenVisibleBoundsChange()) | |
| 1653 OnVisibleBoundsChanged(); | |
| 1654 | |
| 1655 // Notify interested Views that visible bounds within the root view may have | |
| 1656 // changed. | |
| 1657 if (descendants_to_notify_.get()) { | |
| 1658 for (Views::iterator i(descendants_to_notify_->begin()); | |
| 1659 i != descendants_to_notify_->end(); ++i) { | |
| 1660 (*i)->OnVisibleBoundsChanged(); | |
| 1661 } | |
| 1662 } | |
| 1663 } | |
| 1664 | |
| 1665 // static | |
| 1666 void View::RegisterChildrenForVisibleBoundsNotification(View* view) { | |
| 1667 if (view->NeedsNotificationWhenVisibleBoundsChange()) | |
| 1668 view->RegisterForVisibleBoundsNotification(); | |
| 1669 for (int i = 0; i < view->child_count(); ++i) | |
| 1670 RegisterChildrenForVisibleBoundsNotification(view->child_at(i)); | |
| 1671 } | |
| 1672 | |
| 1673 // static | |
| 1674 void View::UnregisterChildrenForVisibleBoundsNotification(View* view) { | |
| 1675 if (view->NeedsNotificationWhenVisibleBoundsChange()) | |
| 1676 view->UnregisterForVisibleBoundsNotification(); | |
| 1677 for (int i = 0; i < view->child_count(); ++i) | |
| 1678 UnregisterChildrenForVisibleBoundsNotification(view->child_at(i)); | |
| 1679 } | |
| 1680 | |
| 1681 void View::RegisterForVisibleBoundsNotification() { | |
| 1682 if (registered_for_visible_bounds_notification_) | |
| 1683 return; | |
| 1684 | |
| 1685 registered_for_visible_bounds_notification_ = true; | |
| 1686 for (View* ancestor = parent_; ancestor; ancestor = ancestor->parent_) | |
| 1687 ancestor->AddDescendantToNotify(this); | |
| 1688 } | |
| 1689 | |
| 1690 void View::UnregisterForVisibleBoundsNotification() { | |
| 1691 if (!registered_for_visible_bounds_notification_) | |
| 1692 return; | |
| 1693 | |
| 1694 registered_for_visible_bounds_notification_ = false; | |
| 1695 for (View* ancestor = parent_; ancestor; ancestor = ancestor->parent_) | |
| 1696 ancestor->RemoveDescendantToNotify(this); | |
| 1697 } | |
| 1698 | |
| 1699 void View::AddDescendantToNotify(View* view) { | |
| 1700 DCHECK(view); | |
| 1701 if (!descendants_to_notify_.get()) | |
| 1702 descendants_to_notify_.reset(new Views); | |
| 1703 descendants_to_notify_->push_back(view); | |
| 1704 } | |
| 1705 | |
| 1706 void View::RemoveDescendantToNotify(View* view) { | |
| 1707 DCHECK(view && descendants_to_notify_.get()); | |
| 1708 Views::iterator i(std::find( | |
| 1709 descendants_to_notify_->begin(), descendants_to_notify_->end(), view)); | |
| 1710 DCHECK(i != descendants_to_notify_->end()); | |
| 1711 descendants_to_notify_->erase(i); | |
| 1712 if (descendants_to_notify_->empty()) | |
| 1713 descendants_to_notify_.reset(); | |
| 1714 } | |
| 1715 | |
| 1716 // Transformations ------------------------------------------------------------- | |
| 1717 | |
| 1718 bool View::GetTransformRelativeTo(const View* ancestor, | |
| 1719 ui::Transform* transform) const { | |
| 1720 const View* p = this; | |
| 1721 | |
| 1722 while (p && p != ancestor) { | |
| 1723 transform->ConcatTransform(p->GetTransform()); | |
| 1724 transform->ConcatTranslate(static_cast<float>(p->GetMirroredX()), | |
| 1725 static_cast<float>(p->y())); | |
| 1726 | |
| 1727 p = p->parent_; | |
| 1728 } | |
| 1729 | |
| 1730 return p == ancestor; | |
| 1731 } | |
| 1732 | |
| 1733 // Coordinate conversion ------------------------------------------------------- | |
| 1734 | |
| 1735 bool View::ConvertPointForAncestor(const View* ancestor, | |
| 1736 gfx::Point* point) const { | |
| 1737 ui::Transform trans; | |
| 1738 // TODO(sad): Have some way of caching the transformation results. | |
| 1739 bool result = GetTransformRelativeTo(ancestor, &trans); | |
| 1740 gfx::Point3f p(*point); | |
| 1741 trans.TransformPoint(p); | |
| 1742 *point = p.AsPoint(); | |
| 1743 return result; | |
| 1744 } | |
| 1745 | |
| 1746 bool View::ConvertPointFromAncestor(const View* ancestor, | |
| 1747 gfx::Point* point) const { | |
| 1748 ui::Transform trans; | |
| 1749 bool result = GetTransformRelativeTo(ancestor, &trans); | |
| 1750 gfx::Point3f p(*point); | |
| 1751 trans.TransformPointReverse(p); | |
| 1752 *point = p.AsPoint(); | |
| 1753 return result; | |
| 1754 } | |
| 1755 | |
| 1756 // Accelerated painting -------------------------------------------------------- | |
| 1757 | |
| 1758 void View::CreateLayer() { | |
| 1759 // A new layer is being created for the view. So all the layers of the | |
| 1760 // sub-tree can inherit the visibility of the corresponding view. | |
| 1761 for (int i = 0, count = child_count(); i < count; ++i) | |
| 1762 child_at(i)->UpdateChildLayerVisibility(true); | |
| 1763 | |
| 1764 layer_.reset(new ui::Layer()); | |
| 1765 layer_->set_delegate(this); | |
| 1766 #if !defined(NDEBUG) | |
| 1767 layer_->set_name(GetClassName()); | |
| 1768 #endif | |
| 1769 | |
| 1770 UpdateParentLayers(); | |
| 1771 UpdateLayerVisibility(); | |
| 1772 | |
| 1773 // The new layer needs to be ordered in the layer tree according | |
| 1774 // to the view tree. Children of this layer were added in order | |
| 1775 // in UpdateParentLayers(). | |
| 1776 if (parent()) | |
| 1777 parent()->ReorderLayers(); | |
| 1778 } | |
| 1779 | |
| 1780 void View::UpdateParentLayers() { | |
| 1781 // Attach all top-level un-parented layers. | |
| 1782 if (layer() && !layer()->parent()) { | |
| 1783 UpdateParentLayer(); | |
| 1784 } else { | |
| 1785 for (int i = 0, count = child_count(); i < count; ++i) | |
| 1786 child_at(i)->UpdateParentLayers(); | |
| 1787 } | |
| 1788 } | |
| 1789 | |
| 1790 void View::UpdateParentLayer() { | |
| 1791 if (!layer()) | |
| 1792 return; | |
| 1793 | |
| 1794 ui::Layer* parent_layer = NULL; | |
| 1795 gfx::Point offset(x(), y()); | |
| 1796 | |
| 1797 // TODO(sad): The NULL check here for parent_ essentially is to check if this | |
| 1798 // is the RootView. Instead of doing this, this function should be made | |
| 1799 // virtual and overridden from the RootView. | |
| 1800 if (parent_) | |
| 1801 parent_->CalculateOffsetToAncestorWithLayer(&offset, &parent_layer); | |
| 1802 else if (!parent_ && GetWidget()) | |
| 1803 GetWidget()->CalculateOffsetToAncestorWithLayer(&offset, &parent_layer); | |
| 1804 | |
| 1805 ReparentLayer(offset, parent_layer); | |
| 1806 } | |
| 1807 | |
| 1808 void View::OrphanLayers() { | |
| 1809 if (layer()) { | |
| 1810 if (layer()->parent()) | |
| 1811 layer()->parent()->Remove(layer()); | |
| 1812 | |
| 1813 // The layer belonging to this View has already been orphaned. It is not | |
| 1814 // necessary to orphan the child layers. | |
| 1815 return; | |
| 1816 } | |
| 1817 for (int i = 0, count = child_count(); i < count; ++i) | |
| 1818 child_at(i)->OrphanLayers(); | |
| 1819 } | |
| 1820 | |
| 1821 void View::ReparentLayer(const gfx::Point& offset, ui::Layer* parent_layer) { | |
| 1822 layer_->SetBounds(gfx::Rect(offset.x(), offset.y(), width(), height())); | |
| 1823 DCHECK_NE(layer(), parent_layer); | |
| 1824 if (parent_layer) | |
| 1825 parent_layer->Add(layer()); | |
| 1826 layer_->SchedulePaint(GetLocalBounds()); | |
| 1827 MoveLayerToParent(layer(), gfx::Point()); | |
| 1828 } | |
| 1829 | |
| 1830 void View::DestroyLayer() { | |
| 1831 ui::Layer* new_parent = layer()->parent(); | |
| 1832 std::vector<ui::Layer*> children = layer()->children(); | |
| 1833 for (size_t i = 0; i < children.size(); ++i) { | |
| 1834 layer()->Remove(children[i]); | |
| 1835 if (new_parent) | |
| 1836 new_parent->Add(children[i]); | |
| 1837 } | |
| 1838 | |
| 1839 layer_.reset(); | |
| 1840 | |
| 1841 if (new_parent) | |
| 1842 ReorderLayers(); | |
| 1843 | |
| 1844 gfx::Point offset; | |
| 1845 CalculateOffsetToAncestorWithLayer(&offset, NULL); | |
| 1846 UpdateChildLayerBounds(offset); | |
| 1847 | |
| 1848 SchedulePaint(); | |
| 1849 } | |
| 1850 | |
| 1851 // Input ----------------------------------------------------------------------- | |
| 1852 | |
| 1853 bool View::ProcessMousePressed(const MouseEvent& event, DragInfo* drag_info) { | |
| 1854 const bool enabled = IsEnabled(); | |
| 1855 int drag_operations = | |
| 1856 (enabled && event.IsOnlyLeftMouseButton() && HitTest(event.location())) ? | |
| 1857 GetDragOperations(event.location()) : 0; | |
| 1858 ContextMenuController* context_menu_controller = event.IsRightMouseButton() ? | |
| 1859 context_menu_controller_ : 0; | |
| 1860 | |
| 1861 const bool result = OnMousePressed(event); | |
| 1862 // WARNING: we may have been deleted, don't use any View variables. | |
| 1863 | |
| 1864 if (!enabled) | |
| 1865 return result; | |
| 1866 | |
| 1867 if (drag_operations != ui::DragDropTypes::DRAG_NONE) { | |
| 1868 drag_info->PossibleDrag(event.location()); | |
| 1869 return true; | |
| 1870 } | |
| 1871 return !!context_menu_controller || result; | |
| 1872 } | |
| 1873 | |
| 1874 bool View::ProcessMouseDragged(const MouseEvent& event, DragInfo* drag_info) { | |
| 1875 // Copy the field, that way if we're deleted after drag and drop no harm is | |
| 1876 // done. | |
| 1877 ContextMenuController* context_menu_controller = context_menu_controller_; | |
| 1878 const bool possible_drag = drag_info->possible_drag; | |
| 1879 if (possible_drag && ExceededDragThreshold( | |
| 1880 drag_info->start_pt.x() - event.x(), | |
| 1881 drag_info->start_pt.y() - event.y())) { | |
| 1882 if (!drag_controller_ || | |
| 1883 drag_controller_->CanStartDragForView( | |
| 1884 this, drag_info->start_pt, event.location())) | |
| 1885 DoDrag(event, drag_info->start_pt); | |
| 1886 } else { | |
| 1887 if (OnMouseDragged(event)) | |
| 1888 return true; | |
| 1889 // Fall through to return value based on context menu controller. | |
| 1890 } | |
| 1891 // WARNING: we may have been deleted. | |
| 1892 return (context_menu_controller != NULL) || possible_drag; | |
| 1893 } | |
| 1894 | |
| 1895 void View::ProcessMouseReleased(const MouseEvent& event) { | |
| 1896 if (context_menu_controller_ && event.IsOnlyRightMouseButton()) { | |
| 1897 // Assume that if there is a context menu controller we won't be deleted | |
| 1898 // from mouse released. | |
| 1899 gfx::Point location(event.location()); | |
| 1900 OnMouseReleased(event); | |
| 1901 if (HitTest(location)) { | |
| 1902 ConvertPointToScreen(this, &location); | |
| 1903 ShowContextMenu(location, true); | |
| 1904 } | |
| 1905 } else { | |
| 1906 OnMouseReleased(event); | |
| 1907 } | |
| 1908 // WARNING: we may have been deleted. | |
| 1909 } | |
| 1910 | |
| 1911 ui::TouchStatus View::ProcessTouchEvent(const TouchEvent& event) { | |
| 1912 // TODO(rjkroege): Implement a grab scheme similar to as as is found in | |
| 1913 // MousePressed. | |
| 1914 return OnTouchEvent(event); | |
| 1915 } | |
| 1916 | |
| 1917 // Accelerators ---------------------------------------------------------------- | |
| 1918 | |
| 1919 void View::RegisterPendingAccelerators() { | |
| 1920 if (!accelerators_.get() || | |
| 1921 registered_accelerator_count_ == accelerators_->size()) { | |
| 1922 // No accelerators are waiting for registration. | |
| 1923 return; | |
| 1924 } | |
| 1925 | |
| 1926 if (!GetWidget()) { | |
| 1927 // The view is not yet attached to a widget, defer registration until then. | |
| 1928 return; | |
| 1929 } | |
| 1930 | |
| 1931 accelerator_focus_manager_ = GetFocusManager(); | |
| 1932 if (!accelerator_focus_manager_) { | |
| 1933 // Some crash reports seem to show that we may get cases where we have no | |
| 1934 // focus manager (see bug #1291225). This should never be the case, just | |
| 1935 // making sure we don't crash. | |
| 1936 | |
| 1937 // TODO(jcampan): This fails for a view under NativeWidgetGtk with | |
| 1938 // TYPE_CHILD. (see http://crbug.com/21335) reenable | |
| 1939 // NOTREACHED assertion and verify accelerators works as | |
| 1940 // expected. | |
| 1941 #if defined(OS_WIN) | |
| 1942 NOTREACHED(); | |
| 1943 #endif | |
| 1944 return; | |
| 1945 } | |
| 1946 // Only register accelerators if we are visible. | |
| 1947 if (!IsVisibleInRootView() || !GetWidget()->IsVisible()) | |
| 1948 return; | |
| 1949 for (std::vector<ui::Accelerator>::const_iterator i( | |
| 1950 accelerators_->begin() + registered_accelerator_count_); | |
| 1951 i != accelerators_->end(); ++i) { | |
| 1952 accelerator_focus_manager_->RegisterAccelerator(*i, this); | |
| 1953 } | |
| 1954 registered_accelerator_count_ = accelerators_->size(); | |
| 1955 } | |
| 1956 | |
| 1957 void View::UnregisterAccelerators(bool leave_data_intact) { | |
| 1958 if (!accelerators_.get()) | |
| 1959 return; | |
| 1960 | |
| 1961 if (GetWidget()) { | |
| 1962 if (accelerator_focus_manager_) { | |
| 1963 // We may not have a FocusManager if the window containing us is being | |
| 1964 // closed, in which case the FocusManager is being deleted so there is | |
| 1965 // nothing to unregister. | |
| 1966 accelerator_focus_manager_->UnregisterAccelerators(this); | |
| 1967 accelerator_focus_manager_ = NULL; | |
| 1968 } | |
| 1969 if (!leave_data_intact) { | |
| 1970 accelerators_->clear(); | |
| 1971 accelerators_.reset(); | |
| 1972 } | |
| 1973 registered_accelerator_count_ = 0; | |
| 1974 } | |
| 1975 } | |
| 1976 | |
| 1977 // Focus ----------------------------------------------------------------------- | |
| 1978 | |
| 1979 void View::InitFocusSiblings(View* v, int index) { | |
| 1980 int count = child_count(); | |
| 1981 | |
| 1982 if (count == 0) { | |
| 1983 v->next_focusable_view_ = NULL; | |
| 1984 v->previous_focusable_view_ = NULL; | |
| 1985 } else { | |
| 1986 if (index == count) { | |
| 1987 // We are inserting at the end, but the end of the child list may not be | |
| 1988 // the last focusable element. Let's try to find an element with no next | |
| 1989 // focusable element to link to. | |
| 1990 View* last_focusable_view = NULL; | |
| 1991 for (Views::iterator i(children_.begin()); i != children_.end(); ++i) { | |
| 1992 if (!(*i)->next_focusable_view_) { | |
| 1993 last_focusable_view = *i; | |
| 1994 break; | |
| 1995 } | |
| 1996 } | |
| 1997 if (last_focusable_view == NULL) { | |
| 1998 // Hum... there is a cycle in the focus list. Let's just insert ourself | |
| 1999 // after the last child. | |
| 2000 View* prev = children_[index - 1]; | |
| 2001 v->previous_focusable_view_ = prev; | |
| 2002 v->next_focusable_view_ = prev->next_focusable_view_; | |
| 2003 prev->next_focusable_view_->previous_focusable_view_ = v; | |
| 2004 prev->next_focusable_view_ = v; | |
| 2005 } else { | |
| 2006 last_focusable_view->next_focusable_view_ = v; | |
| 2007 v->next_focusable_view_ = NULL; | |
| 2008 v->previous_focusable_view_ = last_focusable_view; | |
| 2009 } | |
| 2010 } else { | |
| 2011 View* prev = children_[index]->GetPreviousFocusableView(); | |
| 2012 v->previous_focusable_view_ = prev; | |
| 2013 v->next_focusable_view_ = children_[index]; | |
| 2014 if (prev) | |
| 2015 prev->next_focusable_view_ = v; | |
| 2016 children_[index]->previous_focusable_view_ = v; | |
| 2017 } | |
| 2018 } | |
| 2019 } | |
| 2020 | |
| 2021 // System events --------------------------------------------------------------- | |
| 2022 | |
| 2023 void View::PropagateThemeChanged() { | |
| 2024 for (int i = child_count() - 1; i >= 0; --i) | |
| 2025 child_at(i)->PropagateThemeChanged(); | |
| 2026 OnThemeChanged(); | |
| 2027 } | |
| 2028 | |
| 2029 void View::PropagateLocaleChanged() { | |
| 2030 for (int i = child_count() - 1; i >= 0; --i) | |
| 2031 child_at(i)->PropagateLocaleChanged(); | |
| 2032 OnLocaleChanged(); | |
| 2033 } | |
| 2034 | |
| 2035 // Tooltips -------------------------------------------------------------------- | |
| 2036 | |
| 2037 void View::UpdateTooltip() { | |
| 2038 Widget* widget = GetWidget(); | |
| 2039 // TODO(beng): The TooltipManager NULL check can be removed when we | |
| 2040 // consolidate Init() methods and make views_unittests Init() all | |
| 2041 // Widgets that it uses. | |
| 2042 if (widget && widget->native_widget_private()->GetTooltipManager()) | |
| 2043 widget->native_widget_private()->GetTooltipManager()->UpdateTooltip(); | |
| 2044 } | |
| 2045 | |
| 2046 // Drag and drop --------------------------------------------------------------- | |
| 2047 | |
| 2048 void View::DoDrag(const MouseEvent& event, const gfx::Point& press_pt) { | |
| 2049 int drag_operations = GetDragOperations(press_pt); | |
| 2050 if (drag_operations == ui::DragDropTypes::DRAG_NONE) | |
| 2051 return; | |
| 2052 | |
| 2053 OSExchangeData data; | |
| 2054 WriteDragData(press_pt, &data); | |
| 2055 | |
| 2056 // Message the RootView to do the drag and drop. That way if we're removed | |
| 2057 // the RootView can detect it and avoid calling us back. | |
| 2058 GetWidget()->RunShellDrag(this, data, drag_operations); | |
| 2059 } | |
| 2060 | |
| 2061 } // namespace views | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 8742030:
views: Move view.h to ui/views/. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src