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 #include "wx/gizmos/gizmos.h"
  17
  18 /*
  19
  20     wxDynamicSashWindow
  21
  22     wxDynamicSashWindow widgets manages the way other widgets are viewed.
  23     When a wxDynamicSashWindow is first shown, it will contain one child
  24     view, a viewport for that child, and a pair of scrollbars to allow the
  25     user to navigate the child view area.  Next to each scrollbar is a small
  26     tab.  By clicking on either tab and dragging to the appropriate spot, a
  27     user can split the view area into two smaller views separated by a
  28     draggable sash.  Later, when the user wishes to reunify the two subviews,
  29     the user simply drags the sash to the side of the window.
  30     wxDynamicSashWindow will automatically reparent the appropriate child
  31     view back up the window hierarchy, and the wxDynamicSashWindow will have
  32     only one child view once again.
  33
  34     As an application developer, you will simply create a wxDynamicSashWindow
  35     using either the Create() function or the more complex constructor
  36     provided below, and then create a view window whose parent is the
  37     wxDynamicSashWindow.  The child should respond to
  38     wxDynamicSashSplitEvents -- perhaps with an OnSplit() event handler -- by
  39     constructing a new view window whose parent is also the
  40     wxDynamicSashWindow.  That's it!  Now your users can dynamically split
  41     and reunify the view you provided.
  42
  43     If you wish to handle the scrollbar events for your view, rather than
  44     allowing wxDynamicSashWindow to do it for you, things are a bit more
  45     complex.  (You might want to handle scrollbar events yourself, if,
  46     for instance, you wish to scroll a subwindow of the view you add to
  47     your wxDynamicSashWindow object, rather than scrolling the whole view.)
  48     In this case, you will need to construct your wxDynamicSashWindow without
  49     the wxDS_MANAGE_SCROLLBARS style and  you will need to use the
  50     GetHScrollBar() and GetVScrollBar() methods to retrieve the scrollbar
  51     controls and call SetEventHanler() on them to redirect the scrolling
  52     events whenever your window is reparented by wxDyanmicSashWindow.
  53     You will need to set the scrollbars' event handler at three times:
  54
  55         *  When your view is created
  56         *  When your view receives a wxDynamicSashSplitEvent
  57         *  When your view receives a wxDynamicSashUnifyEvent
  58
  59     See the dynsash_switch sample application for an example which does this.
  60
  61 */
  62
  63
  64 #include <wx/event.h>
  65 #include <wx/window.h>
  66 class wxScrollBar;
  67
  68
  69 #define wxEVT_DYNAMIC_SASH_BASE             (((int)('d' - 'a') << 11) | ((int)('s' - 'a') << 6) | ((int)('h' - 'a') << 1))
  70 #define wxEVT_DYNAMIC_SASH_SPLIT            (wxEVT_DYNAMIC_SASH_BASE + 1)
  71 #define wxEVT_DYNAMIC_SASH_UNIFY            (wxEVT_DYNAMIC_SASH_BASE + 2)
  72
  73 #define EVT_DYNAMIC_SASH_SPLIT(id, func)    EVT_CUSTOM(wxEVT_DYNAMIC_SASH_SPLIT, (id), (func))
  74 #define EVT_DYNAMIC_SASH_UNIFY(id, func)    EVT_CUSTOM(wxEVT_DYNAMIC_SASH_UNIFY, (id), (func))
  75
  76
  77 /*
  78     wxDS_MANAGE_SCROLLBARS is a default style of wxDynamicSashWindow which
  79     will cause it to respond to scrollbar events for your application by
  80     automatically scrolling the child view.
  81 */
  82 #define wxDS_MANAGE_SCROLLBARS  0x0010
  83
  84
  85 /*
  86   wxDS_DRAG_CORNER style indicates that the views can also be resized by
  87   dragging the corner piece between the scrollbars, and which is reflected up
  88   to the frame if necessary.
  89 */
  90 #define wxDS_DRAG_CORNER        0x0020
  91
  92
  93 /*
  94     wxDynamicSashSplitEvents are sent to your view by wxDynamicSashWindow
  95     whenever your view is being split by the user.  It is your
  96     responsibility to handle this event by creating a new view window as
  97     a child of the wxDynamicSashWindow.  wxDynamicSashWindow will
  98     automatically reparent it to the proper place in its window hierarchy.
  99 */
 100 class WXDLLIMPEXP_GIZMOS wxDynamicSashSplitEvent : public wxCommandEvent {
 101 public:
 102     wxDynamicSashSplitEvent();
 103     wxDynamicSashSplitEvent(const wxDynamicSashSplitEvent& event): wxCommandEvent(event) { }
 104     wxDynamicSashSplitEvent(wxObject *target);
 105
 106     virtual wxEvent* Clone() const { return new wxDynamicSashSplitEvent(*this); }
 107
 108 private:
 109     DECLARE_DYNAMIC_CLASS(wxDynamicSashSplitEvent)
 110 };
 111
 112 /*
 113     wxDynamicSashUnifyEvents are sent to your view by wxDynamicSashWindow
 114     whenever the sash which splits your view and its sibling is being
 115     reunified such that your view is expanding to replace its sibling.
 116     You needn't do anything with this event if you are allowing
 117     wxDynamicSashWindow to manage your view's scrollbars, but it is useful
 118     if you are managing the scrollbars yourself so that you can keep
 119     the scrollbars' event handlers connected to your view's event handler
 120     class.
 121 */
 122 class WXDLLIMPEXP_GIZMOS wxDynamicSashUnifyEvent : public wxCommandEvent {
 123 public:
 124     wxDynamicSashUnifyEvent();
 125     wxDynamicSashUnifyEvent(const wxDynamicSashUnifyEvent& event): wxCommandEvent(event) {}
 126     wxDynamicSashUnifyEvent(wxObject *target);
 127
 128     virtual wxEvent* Clone() const { return new wxDynamicSashUnifyEvent(*this); }
 129
 130 private:
 131     DECLARE_DYNAMIC_CLASS(wxDynamicSashUnifyEvent);
 132 };
 133
 134 typedef void (wxEvtHandler::*wxDynamicSashSplitEventFunction)(wxDynamicSashSplitEvent&);
 135 typedef void (wxEvtHandler::*wxDynamicSashUnifyEventFunction)(wxDynamicSashUnifyEvent&);
 136
 137 /*
 138     wxDynamicSashWindow.  See above.
 139 */
 140 WXDLLIMPEXP_GIZMOS extern const wxChar* wxDynamicSashWindowNameStr;
 141
 142 class WXDLLIMPEXP_GIZMOS wxDynamicSashWindow : public wxWindow {
 143 public:
 144     wxDynamicSashWindow();
 145     wxDynamicSashWindow(wxWindow *parent, wxWindowID id,
 146                         const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
 147                         long style = wxCLIP_CHILDREN | wxDS_MANAGE_SCROLLBARS | wxDS_DRAG_CORNER,
 148                         const wxString& name = wxDynamicSashWindowNameStr);
 149     virtual ~wxDynamicSashWindow();
 150
 151     virtual bool Create(wxWindow *parent, wxWindowID id,
 152                         const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
 153                         long style = wxCLIP_CHILDREN | wxDS_MANAGE_SCROLLBARS | wxDS_DRAG_CORNER,
 154                         const wxString& name = wxDynamicSashWindowNameStr);
 155     virtual wxScrollBar *GetHScrollBar(const wxWindow *child) const;
 156     virtual wxScrollBar *GetVScrollBar(const wxWindow *child) const;
 157
 158     /*  This is overloaded from wxWindowBase.  It's not here for you to
 159         call directly.  */
 160     virtual void AddChild(wxWindowBase *child);
 161
 162 private:
 163     class wxDynamicSashWindowImpl *m_impl;
 164
 165     DECLARE_DYNAMIC_CLASS(wxDynamicSashWindow)
 166 };
 167
 168
 169 #endif