| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_APP_LIST_VIEWS_APP_LIST_ITEM_VIEW_H_ |
| #define UI_APP_LIST_VIEWS_APP_LIST_ITEM_VIEW_H_ |
| |
| #include <string> |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/timer/timer.h" |
| #include "ui/app_list/app_list_export.h" |
| #include "ui/app_list/app_list_item_observer.h" |
| #include "ui/app_list/views/cached_label.h" |
| #include "ui/gfx/shadow_value.h" |
| #include "ui/views/context_menu_controller.h" |
| #include "ui/views/controls/button/custom_button.h" |
| |
| class SkBitmap; |
| |
| namespace views { |
| class ImageView; |
| class Label; |
| class MenuRunner; |
| } |
| |
| namespace app_list { |
| |
| class AppListItem; |
| class AppsGridView; |
| class ProgressBarView; |
| |
| class APP_LIST_EXPORT AppListItemView : public views::CustomButton, |
| public views::ContextMenuController, |
| public AppListItemObserver { |
| public: |
| // Internal class name. |
| static const char kViewClassName[]; |
| |
| AppListItemView(AppsGridView* apps_grid_view, AppListItem* item); |
| virtual ~AppListItemView(); |
| |
| void SetIconSize(const gfx::Size& size); |
| |
| void Prerender(); |
| |
| void CancelContextMenu(); |
| |
| gfx::ImageSkia GetDragImage(); |
| void OnDragEnded(); |
| gfx::Point GetDragImageOffset(); |
| |
| void SetAsAttemptedFolderTarget(bool is_target_folder); |
| |
| AppListItem* item() const { return item_; } |
| |
| const views::Label* title() const { return title_; } |
| |
| // In a synchronous drag the item view isn't informed directly of the drag |
| // ending, so the runner of the drag should call this. |
| void OnSyncDragEnd(); |
| |
| // Returns the icon bounds relative to AppListItemView. |
| const gfx::Rect& GetIconBounds() const; |
| |
| // Sets UI state to dragging state. |
| void SetDragUIState(); |
| |
| // Returns the icon bounds for the given |target_bounds| as |
| // the assuming bounds of this view. |
| gfx::Rect GetIconBoundsForTargetViewBounds(const gfx::Rect& target_bounds); |
| |
| private: |
| enum UIState { |
| UI_STATE_NORMAL, // Normal UI (icon + label) |
| UI_STATE_DRAGGING, // Dragging UI (scaled icon only) |
| UI_STATE_DROPPING_IN_FOLDER, // Folder dropping preview UI |
| }; |
| |
| // Get icon from |item_| and schedule background processing. |
| void UpdateIcon(); |
| |
| // Update the tooltip text from |item_|. |
| void UpdateTooltip(); |
| |
| void SetUIState(UIState state); |
| |
| // Sets |touch_dragging_| flag and updates UI. |
| void SetTouchDragging(bool touch_dragging); |
| |
| // Invoked when |mouse_drag_timer_| fires to show dragging UI. |
| void OnMouseDragTimer(); |
| |
| // If the item is not in a folder, not highlighted, not being dragged, and not |
| // having something dropped onto it, enables subpixel AA for the title. |
| void SetTitleSubpixelAA(); |
| |
| // AppListItemObserver overrides: |
| virtual void ItemIconChanged() OVERRIDE; |
| virtual void ItemNameChanged() OVERRIDE; |
| virtual void ItemHighlightedChanged() OVERRIDE; |
| virtual void ItemIsInstallingChanged() OVERRIDE; |
| virtual void ItemPercentDownloadedChanged() OVERRIDE; |
| |
| // views::View overrides: |
| virtual const char* GetClassName() const OVERRIDE; |
| virtual void Layout() OVERRIDE; |
| virtual void SchedulePaintInRect(const gfx::Rect& r) OVERRIDE; |
| virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE; |
| |
| // views::ContextMenuController overrides: |
| virtual void ShowContextMenuForView(views::View* source, |
| const gfx::Point& point, |
| ui::MenuSourceType source_type) OVERRIDE; |
| |
| // views::CustomButton overrides: |
| virtual void StateChanged() OVERRIDE; |
| virtual bool ShouldEnterPushedState(const ui::Event& event) OVERRIDE; |
| |
| // views::View overrides: |
| virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE; |
| virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE; |
| virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE; |
| virtual void OnMouseCaptureLost() OVERRIDE; |
| virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE; |
| |
| // ui::EventHandler overrides: |
| virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE; |
| |
| AppListItem* item_; // Owned by AppListModel. |
| |
| AppsGridView* apps_grid_view_; // Owned by views hierarchy. |
| views::ImageView* icon_; // Owned by views hierarchy. |
| CachedLabel* title_; // Owned by views hierarchy. |
| ProgressBarView* progress_bar_; // Owned by views hierarchy. |
| |
| scoped_ptr<views::MenuRunner> context_menu_runner_; |
| |
| gfx::Size icon_size_; |
| gfx::ShadowValues icon_shadows_; |
| |
| UIState ui_state_; |
| |
| // True if scroll gestures should contribute to dragging. |
| bool touch_dragging_; |
| |
| // A timer to defer showing drag UI when mouse is pressed. |
| base::OneShotTimer<AppListItemView> mouse_drag_timer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AppListItemView); |
| }; |
| |
| } // namespace app_list |
| |
| #endif // UI_APP_LIST_VIEWS_APP_LIST_ITEM_VIEW_H_ |