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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 #ifndef CHROME_BROWSER_UI_GTK_INFOBARS_INFOBAR_CONTAINER_GTK_H_
      6 #define CHROME_BROWSER_UI_GTK_INFOBARS_INFOBAR_CONTAINER_GTK_H_
      7 
      8 #include <vector>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/compiler_specific.h"
     12 #include "chrome/browser/infobars/infobar_container.h"
     13 #include "ui/base/gtk/owned_widget_gtk.h"
     14 
     15 class InfoBar;
     16 class InfoBarGtk;
     17 class InfoBarDelegate;
     18 class Profile;
     19 
     20 namespace gfx {
     21 class Rect;
     22 }
     23 
     24 typedef struct _GdkColor GdkColor;
     25 typedef struct _GdkEventExpose GdkEventExpose;
     26 typedef struct _GtkWidget GtkWidget;
     27 
     28 // Container that both contains the currently displaying infobars, and does
     29 // drawing of infobar arrows on other widgets.
     30 //
     31 // Due to how X11/GTK+ works, this class owns the methods to draw arrows on top
     32 // of other widgets. Since most bars in the top of the window have their own
     33 // event boxes, we can't just draw over the coordinates in the toplevel window
     34 // as event boxes get their own canvases (and they need to have their own event
     35 // boxes for a mixture of handling mouse events and themeing). And because they
     36 // have their own event boxes and event boxes can't be partially transparent,
     37 // we can't just overlap the widgets.
     38 class InfoBarContainerGtk : public InfoBarContainer {
     39  public:
     40   InfoBarContainerGtk(InfoBarContainer::Delegate* delegate,
     41                       Profile* profile);
     42   virtual ~InfoBarContainerGtk();
     43 
     44   // Get the native widget.
     45   GtkWidget* widget() const { return container_.get(); }
     46 
     47   // Remove the specified InfoBarDelegate from the selected WebContents. This
     48   // will notify us back and cause us to close the View. This is called from
     49   // the InfoBar's close button handler.
     50   void RemoveDelegate(InfoBarDelegate* delegate);
     51 
     52   // Returns the total pixel height of all infobars in this container that
     53   // are currently animating.
     54   int TotalHeightOfAnimatingBars() const;
     55 
     56   // True if we are displaying any infobars.
     57   bool ContainsInfobars() const;
     58 
     59   // Paints parts of infobars that aren't inside the infobar's widget. This
     60   // method is called with |widget|/|expose| pairs for both infobars and
     61   // toolbars. All infobars starting from |infobar| (NULL for the first) to the
     62   // end of the list will be rendered.
     63   void PaintInfobarBitsOn(GtkWidget* widget,
     64                           GdkEventExpose* expose,
     65                           InfoBarGtk* infobar);
     66 
     67  protected:
     68   // InfoBarContainer:
     69   virtual void PlatformSpecificAddInfoBar(InfoBar* infobar,
     70                                           size_t position) OVERRIDE;
     71   virtual void PlatformSpecificRemoveInfoBar(InfoBar* infobar) OVERRIDE;
     72   virtual void PlatformSpecificInfoBarStateChanged(bool is_animating) OVERRIDE;
     73 
     74  private:
     75   // Performs the actual painting of the arrow in an expose event.
     76   void PaintArrowOn(GtkWidget* widget,
     77                     GdkEventExpose* expose,
     78                     const gfx::Rect& bounds,
     79                     InfoBarGtk* source);
     80 
     81   // The profile for the browser that hosts this InfoBarContainer.
     82   Profile* profile_;
     83 
     84   // A list of the InfoBarGtk* instances. Used during drawing to determine
     85   // which InfoBarGtk supplies information about drawing the arrows.
     86   std::vector<InfoBarGtk*> infobars_gtk_;
     87 
     88   // VBox that holds the info bars.
     89   ui::OwnedWidgetGtk container_;
     90 
     91   DISALLOW_COPY_AND_ASSIGN(InfoBarContainerGtk);
     92 };
     93 
     94 #endif  // CHROME_BROWSER_UI_GTK_INFOBARS_INFOBAR_CONTAINER_GTK_H_
     95