contrib/include/wx/gizmos/dynamicsash.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dynamicsash.h
   3 // Purpose:     A window which can be dynamically split to an arbitrary depth
   4 //              and later reunified through the user interface
   5 // Author:      Matt Kimball
   6 // Modified by:
   7 // Created:     7/15/2001
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 2001 Matt Kimball
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef _WX_DYNAMICSASH_H_
  14 #define _WX_DYNAMICSASH_H_
  15
  16 /*
  17
  18     wxDynamicSashWindow
  19
  20     wxDynamicSashWindow widgets manages the way other widgets are viewed.
  21     When a wxDynamicSashWindow is first shown, it will contain one child
  22     view, a viewport for that child, and a pair of scrollbars to allow the
  23     user to navigate the child view area.  Next to each scrollbar is a small
  24     tab.  By clicking on either tab and dragging to the appropriate spot, a
  25     user can split the view area into two smaller views separated by a
  26     draggable sash.  Later, when the user wishes to reunify the two subviews,
  27     the user simply drags the sash to the side of the window.
  28     wxDynamicSashWindow will automatically reparent the appropriate child
  29     view back up the window hierarchy, and the wxDynamicSashWindow will have
  30     only one child view once again.
  31
  32     As an application developer, you will simply create a wxDynamicSashWindow
  33     using either the Create() function or the more complex constructor
  34     provided below, and then create a view window whose parent is the
  35     wxDynamicSashWindow.  The child should respond to
  36     wxDynamicSashSplitEvents -- perhaps with an OnSplit() event handler -- by
  37     constructing a new view window whose parent is also the
  38     wxDynamicSashWindow.  That's it!  Now your users can dynamically split
  39     and reunify the view you provided.
  40
  41     If you wish to handle the scrollbar events for your view, rather than
  42     allowing wxDynamicSashWindow to do it for you, things are a bit more
  43     complex.  (You might want to handle scrollbar events yourself, if,
  44     for instance, you wish to scroll a subwindow of the view you add to
  45     your wxDynamicSashWindow object, rather than scrolling the whole view.)
  46     In this case, you will need to construct your wxDynamicSashWindow without
  47     the wxDS_MANAGE_SCROLLBARS style and  you will need to use the
  48     GetHScrollBar() and GetVScrollBar() methods to retrieve the scrollbar
  49     controls and call SetEventHanler() on them to redirect the scrolling
  50     events whenever your window is reparented by wxDyanmicSashWindow.
  51     You will need to set the scrollbars' event handler at three times:
  52
  53         *  When your view is created
  54         *  When your view receives a wxDynamicSashSplitEvent
  55         *  When your view receives a wxDynamicSashUnifyEvent
  56
  57     See the dynsash_switch sample application for an example which does this.
  58
  59 */
  60
  61
  62 #include <wx/event.h>
  63 #include <wx/window.h>
  64 class wxScrollBar;
  65
  66
  67 #define wxEVT_DYNAMIC_SASH_BASE             (((int)('d' - 'a') << 11) | ((int)('s' - 'a') << 6) | ((int)('h' - 'a') << 1))
  68 #define wxEVT_DYNAMIC_SASH_SPLIT            (wxEVT_DYNAMIC_SASH_BASE + 1)
  69 #define wxEVT_DYNAMIC_SASH_UNIFY            (wxEVT_DYNAMIC_SASH_BASE + 2)
  70
  71 #define EVT_DYNAMIC_SASH_SPLIT(id, func)    EVT_CUSTOM(wxEVT_DYNAMIC_SASH_SPLIT, (id), (func))
  72 #define EVT_DYNAMIC_SASH_UNIFY(id, func)    EVT_CUSTOM(wxEVT_DYNAMIC_SASH_UNIFY, (id), (func))
  73
  74
  75 /*
  76     wxDS_MANAGE_SCROLLBARS is a default style of wxDynamicSashWindow which
  77     will cause it to respond to scrollbar events for your application by
  78     automatically scrolling the child view.
  79 */
  80 #define wxDS_MANAGE_SCROLLBARS  0x0010
  81
  82
  83 /*
  84   wxDS_DRAG_CORNER style indicates that the views can also be resized by
  85   dragging the corner piece between the scrollbars, and which is reflected up
  86   to the frame if necessary.
  87 */
  88 #define wxDS_DRAG_CORNER        0x0020
  89
  90
  91 /*
  92     wxDynamicSashSplitEvents are sent to your view by wxDynamicSashWindow
  93     whenever your view is being split by the user.  It is your
  94     responsibility to handle this event by creating a new view window as
  95     a child of the wxDynamicSashWindow.  wxDynamicSashWindow will
  96     automatically reparent it to the proper place in its window hierarchy.
  97 */
  98 class wxDynamicSashSplitEvent : public wxCommandEvent {
  99 public:
 100     wxDynamicSashSplitEvent();
 101     wxDynamicSashSplitEvent(const wxDynamicSashSplitEvent& event): wxCommandEvent(event) { }
 102     wxDynamicSashSplitEvent(wxObject *target);
 103
 104     virtual wxEvent* Clone() const { return new wxDynamicSashSplitEvent(*this); }
 105
 106 private:
 107     DECLARE_DYNAMIC_CLASS(wxDynamicSashSplitEvent)
 108 };
 109
 110 /*
 111     wxDynamicSashUnifyEvents are sent to your view by wxDynamicSashWindow
 112     whenever the sash which splits your view and its sibling is being
 113     reunified such that your view is expanding to replace its sibling.
 114     You needn't do anything with this event if you are allowing
 115     wxDynamicSashWindow to manage your view's scrollbars, but it is useful
 116     if you are managing the scrollbars yourself so that you can keep
 117     the scrollbars' event handlers connected to your view's event handler
 118     class.
 119 */
 120 class wxDynamicSashUnifyEvent : public wxCommandEvent {
 121 public:
 122     wxDynamicSashUnifyEvent();
 123     wxDynamicSashUnifyEvent(const wxDynamicSashUnifyEvent& event): wxCommandEvent(event) {}
 124     wxDynamicSashUnifyEvent(wxObject *target);
 125
 126     virtual wxEvent* Clone() const { return new wxDynamicSashUnifyEvent(*this); }
 127
 128 private:
 129     DECLARE_DYNAMIC_CLASS(wxDynamicSashUnifyEvent);
 130 };
 131
 132 /*
 133     wxDynamicSashWindow.  See above.
 134 */
 135 class wxDynamicSashWindow : public wxWindow {
 136 public:
 137     wxDynamicSashWindow();
 138     wxDynamicSashWindow(wxWindow *parent, wxWindowID id,
 139                         const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
 140                         long style = wxCLIP_CHILDREN | wxDS_MANAGE_SCROLLBARS | wxDS_DRAG_CORNER,
 141                         const wxString& name = "dynamicSashWindow");
 142     virtual ~wxDynamicSashWindow();
 143
 144     virtual bool Create(wxWindow *parent, wxWindowID id,
 145                         const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
 146                         long style = wxCLIP_CHILDREN | wxDS_MANAGE_SCROLLBARS | wxDS_DRAG_CORNER,
 147                         const wxString& name = "dynamicSashWindow");
 148     virtual wxScrollBar *GetHScrollBar(const wxWindow *child) const;
 149     virtual wxScrollBar *GetVScrollBar(const wxWindow *child) const;
 150
 151     /*  This is overloaded from wxWindowBase.  It's not here for you to
 152         call directly.  */
 153     virtual void AddChild(wxWindowBase *child);
 154
 155 private:
 156     class wxDynamicSashWindowImpl *m_impl;
 157
 158     DECLARE_DYNAMIC_CLASS(wxDynamicSashWindow)
 159 };
 160
 161
 162 #endif