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 #ifdef GIZMOISDLL
  17 #define GIZMODLLEXPORT WXDLLEXPORT
  18 #else
  19 #define GIZMODLLEXPORT
  20 #endif
  21
  22
  23 /*
  24
  25     wxDynamicSashWindow
  26
  27     wxDynamicSashWindow widgets manages the way other widgets are viewed.
  28     When a wxDynamicSashWindow is first shown, it will contain one child
  29     view, a viewport for that child, and a pair of scrollbars to allow the
  30     user to navigate the child view area.  Next to each scrollbar is a small
  31     tab.  By clicking on either tab and dragging to the appropriate spot, a
  32     user can split the view area into two smaller views separated by a
  33     draggable sash.  Later, when the user wishes to reunify the two subviews,
  34     the user simply drags the sash to the side of the window.
  35     wxDynamicSashWindow will automatically reparent the appropriate child
  36     view back up the window hierarchy, and the wxDynamicSashWindow will have
  37     only one child view once again.
  38
  39     As an application developer, you will simply create a wxDynamicSashWindow
  40     using either the Create() function or the more complex constructor
  41     provided below, and then create a view window whose parent is the
  42     wxDynamicSashWindow.  The child should respond to
  43     wxDynamicSashSplitEvents -- perhaps with an OnSplit() event handler -- by
  44     constructing a new view window whose parent is also the
  45     wxDynamicSashWindow.  That's it!  Now your users can dynamically split
  46     and reunify the view you provided.
  47
  48     If you wish to handle the scrollbar events for your view, rather than
  49     allowing wxDynamicSashWindow to do it for you, things are a bit more
  50     complex.  (You might want to handle scrollbar events yourself, if,
  51     for instance, you wish to scroll a subwindow of the view you add to
  52     your wxDynamicSashWindow object, rather than scrolling the whole view.)
  53     In this case, you will need to construct your wxDynamicSashWindow without
  54     the wxDS_MANAGE_SCROLLBARS style and  you will need to use the
  55     GetHScrollBar() and GetVScrollBar() methods to retrieve the scrollbar
  56     controls and call SetEventHanler() on them to redirect the scrolling
  57     events whenever your window is reparented by wxDyanmicSashWindow.
  58     You will need to set the scrollbars' event handler at three times:
  59
  60         *  When your view is created
  61         *  When your view receives a wxDynamicSashSplitEvent
  62         *  When your view receives a wxDynamicSashUnifyEvent
  63
  64     See the dynsash_switch sample application for an example which does this.
  65
  66 */
  67
  68
  69 #include <wx/event.h>
  70 #include <wx/window.h>
  71 class wxScrollBar;
  72
  73
  74 #define wxEVT_DYNAMIC_SASH_BASE             (((int)('d' - 'a') << 11) | ((int)('s' - 'a') << 6) | ((int)('h' - 'a') << 1))
  75 #define wxEVT_DYNAMIC_SASH_SPLIT            (wxEVT_DYNAMIC_SASH_BASE + 1)
  76 #define wxEVT_DYNAMIC_SASH_UNIFY            (wxEVT_DYNAMIC_SASH_BASE + 2)
  77
  78 #define EVT_DYNAMIC_SASH_SPLIT(id, func)    EVT_CUSTOM(wxEVT_DYNAMIC_SASH_SPLIT, (id), (func))
  79 #define EVT_DYNAMIC_SASH_UNIFY(id, func)    EVT_CUSTOM(wxEVT_DYNAMIC_SASH_UNIFY, (id), (func))
  80
  81
  82 /*
  83     wxDS_MANAGE_SCROLLBARS is a default style of wxDynamicSashWindow which
  84     will cause it to respond to scrollbar events for your application by
  85     automatically scrolling the child view.
  86 */
  87 #define wxDS_MANAGE_SCROLLBARS  0x0010
  88
  89
  90 /*
  91   wxDS_DRAG_CORNER style indicates that the views can also be resized by
  92   dragging the corner piece between the scrollbars, and which is reflected up
  93   to the frame if necessary.
  94 */
  95 #define wxDS_DRAG_CORNER        0x0020
  96
  97
  98 /*
  99     wxDynamicSashSplitEvents are sent to your view by wxDynamicSashWindow
 100     whenever your view is being split by the user.  It is your
 101     responsibility to handle this event by creating a new view window as
 102     a child of the wxDynamicSashWindow.  wxDynamicSashWindow will
 103     automatically reparent it to the proper place in its window hierarchy.
 104 */
 105 class GIZMODLLEXPORT wxDynamicSashSplitEvent : public wxCommandEvent {
 106 public:
 107     wxDynamicSashSplitEvent();
 108     wxDynamicSashSplitEvent(const wxDynamicSashSplitEvent& event): wxCommandEvent(event) { }
 109     wxDynamicSashSplitEvent(wxObject *target);
 110
 111     virtual wxEvent* Clone() const { return new wxDynamicSashSplitEvent(*this); }
 112
 113 private:
 114     DECLARE_DYNAMIC_CLASS(wxDynamicSashSplitEvent)
 115 };
 116
 117 /*
 118     wxDynamicSashUnifyEvents are sent to your view by wxDynamicSashWindow
 119     whenever the sash which splits your view and its sibling is being
 120     reunified such that your view is expanding to replace its sibling.
 121     You needn't do anything with this event if you are allowing
 122     wxDynamicSashWindow to manage your view's scrollbars, but it is useful
 123     if you are managing the scrollbars yourself so that you can keep
 124     the scrollbars' event handlers connected to your view's event handler
 125     class.
 126 */
 127 class GIZMODLLEXPORT wxDynamicSashUnifyEvent : public wxCommandEvent {
 128 public:
 129     wxDynamicSashUnifyEvent();
 130     wxDynamicSashUnifyEvent(const wxDynamicSashUnifyEvent& event): wxCommandEvent(event) {}
 131     wxDynamicSashUnifyEvent(wxObject *target);
 132
 133     virtual wxEvent* Clone() const { return new wxDynamicSashUnifyEvent(*this); }
 134
 135 private:
 136     DECLARE_DYNAMIC_CLASS(wxDynamicSashUnifyEvent);
 137 };
 138
 139 typedef void (wxEvtHandler::*wxDynamicSashSplitEventFunction)(wxDynamicSashSplitEvent&);
 140 typedef void (wxEvtHandler::*wxDynamicSashUnifyEventFunction)(wxDynamicSashSplitEvent&);
 141
 142 /*
 143     wxDynamicSashWindow.  See above.
 144 */
 145 class GIZMODLLEXPORT wxDynamicSashWindow : public wxWindow {
 146 public:
 147     wxDynamicSashWindow();
 148     wxDynamicSashWindow(wxWindow *parent, wxWindowID id,
 149                         const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
 150                         long style = wxCLIP_CHILDREN | wxDS_MANAGE_SCROLLBARS | wxDS_DRAG_CORNER,
 151                         const wxString& name = "dynamicSashWindow");
 152     virtual ~wxDynamicSashWindow();
 153
 154     virtual bool Create(wxWindow *parent, wxWindowID id,
 155                         const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
 156                         long style = wxCLIP_CHILDREN | wxDS_MANAGE_SCROLLBARS | wxDS_DRAG_CORNER,
 157                         const wxString& name = "dynamicSashWindow");
 158     virtual wxScrollBar *GetHScrollBar(const wxWindow *child) const;
 159     virtual wxScrollBar *GetVScrollBar(const wxWindow *child) const;
 160
 161     /*  This is overloaded from wxWindowBase.  It's not here for you to
 162         call directly.  */
 163     virtual void AddChild(wxWindowBase *child);
 164
 165 private:
 166     class wxDynamicSashWindowImpl *m_impl;
 167
 168     DECLARE_DYNAMIC_CLASS(wxDynamicSashWindow)
 169 };
 170
 171
 172 #endif