diff options
Diffstat (limited to 'chrome/browser/views/tabs/tab_strip.h')
| -rw-r--r-- | chrome/browser/views/tabs/tab_strip.h | 280 |
1 files changed, 3 insertions, 277 deletions
diff --git a/chrome/browser/views/tabs/tab_strip.h b/chrome/browser/views/tabs/tab_strip.h index f7ec80f..4c24f8c 100644 --- a/chrome/browser/views/tabs/tab_strip.h +++ b/chrome/browser/views/tabs/tab_strip.h @@ -6,282 +6,8 @@ #define CHROME_BROWSER_VIEWS_TABS_TAB_STRIP_H_ #pragma once -#include "app/animation_container.h" -#include "base/ref_counted.h" -#include "base/timer.h" -#include "chrome/browser/views/tabs/base_tab_strip.h" -#include "gfx/point.h" -#include "gfx/rect.h" -#include "views/controls/button/image_button.h" -#include "views/mouse_watcher.h" - -class Tab; - -namespace views { -class ImageView; -#if defined(OS_LINUX) -class WidgetGtk; -#elif defined(OS_WIN) -class WidgetWin; -#endif -} - -/////////////////////////////////////////////////////////////////////////////// -// -// TabStrip -// -// A View that represents the TabStripModel. The TabStrip has the -// following responsibilities: -// - It implements the TabStripModelObserver interface, and acts as a -// container for Tabs, and is also responsible for creating them. -// - It takes part in Tab Drag & Drop with Tab, TabDragHelper and -// DraggedTab, focusing on tasks that require reshuffling other tabs -// in response to dragged tabs. -// -/////////////////////////////////////////////////////////////////////////////// -class TabStrip : public BaseTabStrip, - public views::ButtonListener, - public views::MouseWatcherListener { - public: - explicit TabStrip(TabStripController* controller); - virtual ~TabStrip(); - - // Creates the new tab button. - void InitTabStripButtons(); - - // Returns the bounds of the new tab button. - gfx::Rect GetNewTabButtonBounds(); - - // MouseWatcherListener overrides: - virtual void MouseMovedOutOfView(); - - // BaseTabStrip implementation: - virtual int GetPreferredHeight(); - virtual void SetBackgroundOffset(const gfx::Point& offset); - virtual bool IsPositionInWindowCaption(const gfx::Point& point); - virtual void SetDraggedTabBounds(int tab_index, - const gfx::Rect& tab_bounds); - virtual TabStrip* AsTabStrip(); - virtual void PrepareForCloseAt(int model_index); - virtual void RemoveTabAt(int model_index); - virtual void SelectTabAt(int old_model_index, int new_model_index); - virtual void TabTitleChangedNotLoading(int model_index); - virtual void StartHighlight(int model_index); - virtual void StopAllHighlighting(); - virtual BaseTab* CreateTabForDragging(); - - // views::View overrides: - virtual void PaintChildren(gfx::Canvas* canvas); - virtual views::View* GetViewByID(int id) const; - virtual gfx::Size GetPreferredSize(); - // NOTE: the drag and drop methods are invoked from FrameView. This is done to - // allow for a drop region that extends outside the bounds of the TabStrip. - virtual void OnDragEntered(const views::DropTargetEvent& event); - virtual int OnDragUpdated(const views::DropTargetEvent& event); - virtual void OnDragExited(); - virtual int OnPerformDrop(const views::DropTargetEvent& event); - virtual AccessibilityTypes::Role GetAccessibleRole(); - virtual views::View* GetViewForPoint(const gfx::Point& point); - virtual void OnThemeChanged(); - - protected: - // BaseTabStrip overrides: - virtual BaseTab* CreateTab(); - virtual void StartInsertTabAnimation(int model_index, bool foreground); - virtual void StartMoveTabAnimation(); - virtual void AnimateToIdealBounds(); - virtual bool ShouldHighlightCloseButtonAfterRemove(); - virtual void DoLayout(); - - // views::View implementation: - virtual void ViewHierarchyChanged(bool is_add, - views::View* parent, - views::View* child); - - // TabController overrides. - virtual bool IsTabSelected(const BaseTab* btr) const; - - // views::ButtonListener implementation: - virtual void ButtonPressed(views::Button* sender, const views::Event& event); - - // Horizontal gap between mini and non-mini-tabs. - static const int mini_to_non_mini_gap_; - - private: - friend class DraggedTabController; - - // Used during a drop session of a url. Tracks the position of the drop as - // well as a window used to highlight where the drop occurs. - struct DropInfo { - DropInfo(int index, bool drop_before, bool paint_down); - ~DropInfo(); - - // Index of the tab to drop on. If drop_before is true, the drop should - // occur between the tab at drop_index - 1 and drop_index. - // WARNING: if drop_before is true it is possible this will == tab_count, - // which indicates the drop should create a new tab at the end of the tabs. - int drop_index; - bool drop_before; - - // Direction the arrow should point in. If true, the arrow is displayed - // above the tab and points down. If false, the arrow is displayed beneath - // the tab and points up. - bool point_down; - - // Renders the drop indicator. - // TODO(beng): should be views::Widget. -#if defined(OS_WIN) - views::WidgetWin* arrow_window; -#else - views::WidgetGtk* arrow_window; -#endif - views::ImageView* arrow_view; - - private: - DISALLOW_COPY_AND_ASSIGN(DropInfo); - }; - - void Init(); - - // Set the images for the new tab button. - void LoadNewTabButtonImage(); - - // Retrieves the Tab at the specified index. Remember, the specified index - // is in terms of tab_data, *not* the model. - Tab* GetTabAtTabDataIndex(int tab_data_index) const; - - // Returns the tab at the specified index. If a remove animation is on going - // and the index is >= the index of the tab being removed, the index is - // incremented. While a remove operation is on going the indices of the model - // do not line up with the indices of the view. This method adjusts the index - // accordingly. - // - // Use this instead of GetTabAtTabDataIndex if the index comes from the model. - Tab* GetTabAtModelIndex(int model_index) const; - - // Returns the number of mini-tabs. - int GetMiniTabCount() const; - - // -- Tab Resize Layout ----------------------------------------------------- - - // Returns the exact (unrounded) current width of each tab. - void GetCurrentTabWidths(double* unselected_width, - double* selected_width) const; - - // Returns the exact (unrounded) desired width of each tab, based on the - // desired strip width and number of tabs. If - // |width_of_tabs_for_mouse_close_| is nonnegative we use that value in - // calculating the desired strip width; otherwise we use the current width. - // |mini_tab_count| gives the number of mini-tabs and |tab_count| the number - // of mini and non-mini-tabs. - void GetDesiredTabWidths(int tab_count, - int mini_tab_count, - double* unselected_width, - double* selected_width) const; - - // Perform an animated resize-relayout of the TabStrip immediately. - void ResizeLayoutTabs(); - - // Ensure that the message loop observer used for event spying is added and - // removed appropriately so we can tell when to resize layout the tab strip. - void AddMessageLoopObserver(); - void RemoveMessageLoopObserver(); - - // -- Link Drag & Drop ------------------------------------------------------ - - // Returns the bounds to render the drop at, in screen coordinates. Sets - // |is_beneath| to indicate whether the arrow is beneath the tab, or above - // it. - gfx::Rect GetDropBounds(int drop_index, bool drop_before, bool* is_beneath); - - // Updates the location of the drop based on the event. - void UpdateDropIndex(const views::DropTargetEvent& event); - - // Sets the location of the drop, repainting as necessary. - void SetDropIndex(int tab_data_index, bool drop_before); - - // Returns the drop effect for dropping a URL on the tab strip. This does - // not query the data in anyway, it only looks at the source operations. - int GetDropEffect(const views::DropTargetEvent& event); - - // Returns the image to use for indicating a drop on a tab. If is_down is - // true, this returns an arrow pointing down. - static SkBitmap* GetDropArrowImage(bool is_down); - - // -- Animations ------------------------------------------------------------ - - // Generates the ideal bounds of the TabStrip when all Tabs have finished - // animating to their desired position/bounds. This is used by the standard - // Layout method and other callers like the DraggedTabController that need - // stable representations of Tab positions. - void GenerateIdealBounds(); - - // Starts various types of TabStrip animations. - void StartResizeLayoutAnimation(); - void StartMoveTabAnimation(int from_model_index, - int to_model_index); - void StartMiniTabAnimation(); - void StartMouseInitiatedRemoveTabAnimation(int model_index); - - // Stops any ongoing animations. If |layout| is true and an animation is - // ongoing this does a layout. - virtual void StopAnimating(bool layout); - - // Calculates the available width for tabs, assuming a Tab is to be closed. - int GetAvailableWidthForTabs(Tab* last_tab) const; - - // Returns true if the specified point in TabStrip coords is within the - // hit-test region of the specified Tab. - bool IsPointInTab(Tab* tab, const gfx::Point& point_in_tabstrip_coords); - - // -- Member Variables ------------------------------------------------------ - - // The "New Tab" button. - views::ImageButton* newtab_button_; - - // Ideal bounds of the new tab button. - gfx::Rect newtab_button_bounds_; - - // The current widths of various types of tabs. We save these so that, as - // users close tabs while we're holding them at the same size, we can lay out - // tabs exactly and eliminate the "pixel jitter" we'd get from just leaving - // them all at their existing, rounded widths. - double current_unselected_width_; - double current_selected_width_; - - // If this value is nonnegative, it is used in GetDesiredTabWidths() to - // calculate how much space in the tab strip to use for tabs. Most of the - // time this will be -1, but while we're handling closing a tab via the mouse, - // we'll set this to the edge of the last tab before closing, so that if we - // are closing the last tab and need to resize immediately, we'll resize only - // back to this width, thus once again placing the last tab under the mouse - // cursor. - int available_width_for_tabs_; - - // True if PrepareForCloseAt has been invoked. When true remove animations - // preserve current tab bounds. - bool in_tab_close_; - - // The size of the new tab button must be hardcoded because we need to be - // able to lay it out before we are able to get its image from the - // ThemeProvider. It also makes sense to do this, because the size of the - // new tab button should not need to be calculated dynamically. - static const int kNewTabButtonWidth = 28; - static const int kNewTabButtonHeight = 18; - - // Valid for the lifetime of a drag over us. - scoped_ptr<DropInfo> drop_info_; - - // To ensure all tabs pulse at the same time they share the same animation - // container. This is that animation container. - scoped_refptr<AnimationContainer> animation_container_; - - // Used for stage 1 of new tab animation. - base::OneShotTimer<TabStrip> new_tab_timer_; - - scoped_ptr<views::MouseWatcher> mouse_watcher_; - - DISALLOW_COPY_AND_ASSIGN(TabStrip); -}; +#include "chrome/browser/ui/views/tabs/tab_strip.h" +// TODO(beng): remove this file once all includes have been updated. #endif // CHROME_BROWSER_VIEWS_TABS_TAB_STRIP_H_ + |