chrome/browser/ui/gtk/infobars/infobar_container_gtk.h

   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_