include/wx/generic/laywin.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        laywin.h
   3 // Purpose:     Implements a simple layout algorithm, plus
   4 //              wxSashLayoutWindow which is an example of a window with
   5 //              layout-awareness (via event handlers). This is suited to
   6 //              IDE-style window layout.
   7 // Author:      Julian Smart
   8 // Modified by:
   9 // Created:     04/01/98
  10 // RCS-ID:      $Id$
  11 // Copyright:   (c) Julian Smart
  12 // Licence:     wxWindows licence
  13 /////////////////////////////////////////////////////////////////////////////
  14
  15 #ifndef _WX_LAYWIN_H_G_
  16 #define _WX_LAYWIN_H_G_
  17
  18 #ifdef __GNUG__
  19 #pragma interface "laywin.h"
  20 #endif
  21
  22 #if wxUSE_SASH
  23     #include "wx/sashwin.h"
  24 #endif // wxUSE_SASH
  25
  26 const wxEventType wxEVT_QUERY_LAYOUT_INFO =     wxEVT_FIRST + 1500;
  27 const wxEventType wxEVT_CALCULATE_LAYOUT =      wxEVT_FIRST + 1501;
  28
  29 enum wxLayoutOrientation
  30 {
  31     wxLAYOUT_HORIZONTAL,
  32     wxLAYOUT_VERTICAL
  33 };
  34
  35 enum wxLayoutAlignment
  36 {
  37     wxLAYOUT_NONE,
  38     wxLAYOUT_TOP,
  39     wxLAYOUT_LEFT,
  40     wxLAYOUT_RIGHT,
  41     wxLAYOUT_BOTTOM
  42 };
  43
  44 // Not sure this is necessary
  45 // Tell window which dimension we're sizing on
  46 #define wxLAYOUT_LENGTH_Y       0x0008
  47 #define wxLAYOUT_LENGTH_X       0x0000
  48
  49 // Use most recently used length
  50 #define wxLAYOUT_MRU_LENGTH     0x0010
  51
  52 // Only a query, so don't actually move it.
  53 #define wxLAYOUT_QUERY          0x0100
  54
  55 /*
  56  * This event is used to get information about window alignment,
  57  * orientation and size.
  58  */
  59
  60 class WXDLLEXPORT wxQueryLayoutInfoEvent: public wxEvent
  61 {
  62 DECLARE_DYNAMIC_CLASS(wxQueryLayoutInfoEvent)
  63 public:
  64
  65     wxQueryLayoutInfoEvent(wxWindowID id = 0)
  66     {
  67         SetEventType(wxEVT_QUERY_LAYOUT_INFO);
  68         m_requestedLength = 0;
  69         m_flags = 0;
  70         m_id = id;
  71         m_alignment = wxLAYOUT_TOP;
  72         m_orientation = wxLAYOUT_HORIZONTAL;
  73     }
  74
  75     // Read by the app
  76     void SetRequestedLength(int length) { m_requestedLength = length; }
  77     int GetRequestedLength() const { return m_requestedLength; }
  78
  79     void SetFlags(int flags) { m_flags = flags; }
  80     int GetFlags() const { return m_flags; }
  81
  82     // Set by the app
  83     void SetSize(const wxSize& size) { m_size = size; }
  84     wxSize GetSize() const { return m_size; }
  85
  86     void SetOrientation(wxLayoutOrientation orient) { m_orientation = orient; }
  87     wxLayoutOrientation GetOrientation() const { return m_orientation; }
  88
  89     void SetAlignment(wxLayoutAlignment align) { m_alignment = align; }
  90     wxLayoutAlignment GetAlignment() const { return m_alignment; }
  91
  92 protected:
  93     int                     m_flags;
  94     int                     m_requestedLength;
  95     wxSize                  m_size;
  96     wxLayoutOrientation     m_orientation;
  97     wxLayoutAlignment       m_alignment;
  98
  99 };
 100
 101 typedef void (wxEvtHandler::*wxQueryLayoutInfoEventFunction)(wxQueryLayoutInfoEvent&);
 102
 103 #define EVT_QUERY_LAYOUT_INFO(func)  { wxEVT_QUERY_LAYOUT_INFO, -1, -1, (wxObjectEventFunction) (wxEventFunction) (wxQueryLayoutInfoEventFunction) & func, NULL },
 104
 105 /*
 106  * This event is used to take a bite out of the available client area.
 107  */
 108
 109 class WXDLLEXPORT wxCalculateLayoutEvent: public wxEvent
 110 {
 111 DECLARE_DYNAMIC_CLASS(wxCalculateLayoutEvent)
 112 public:
 113     wxCalculateLayoutEvent(wxWindowID id = 0)
 114     {
 115         SetEventType(wxEVT_CALCULATE_LAYOUT);
 116         m_flags = 0;
 117         m_id = id;
 118     }
 119 // Read by the app
 120     inline void SetFlags(int flags) { m_flags = flags; }
 121     inline int GetFlags() const { return m_flags; }
 122
 123 // Set by the app
 124     inline void SetRect(const wxRect& rect) { m_rect = rect; }
 125     inline wxRect GetRect() const { return m_rect; }
 126 protected:
 127     int                     m_flags;
 128     wxRect                  m_rect;
 129 };
 130
 131 typedef void (wxEvtHandler::*wxCalculateLayoutEventFunction)(wxCalculateLayoutEvent&);
 132
 133 #define EVT_CALCULATE_LAYOUT(func)  { wxEVT_CALCULATE_LAYOUT, -1, -1, (wxObjectEventFunction) (wxEventFunction) (wxCalculateLayoutEventFunction) & func, NULL },
 134
 135 #if wxUSE_SASH
 136
 137 // This is window that can remember alignment/orientation, does its own layout,
 138 // and can provide sashes too. Useful for implementing docked windows with sashes in
 139 // an IDE-style interface.
 140 class WXDLLEXPORT wxSashLayoutWindow: public wxSashWindow
 141 {
 142     DECLARE_CLASS(wxSashLayoutWindow)
 143 public:
 144     wxSashLayoutWindow(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition,
 145         const wxSize& size = wxDefaultSize, long style = wxSW_3D|wxCLIP_CHILDREN, const wxString& name = "layoutWindow");
 146
 147 // Accessors
 148     inline wxLayoutAlignment GetAlignment() const { return m_alignment; };
 149     inline wxLayoutOrientation GetOrientation() const { return m_orientation; };
 150
 151     inline void SetAlignment(wxLayoutAlignment align) { m_alignment = align; };
 152     inline void SetOrientation(wxLayoutOrientation orient) { m_orientation = orient; };
 153
 154     // Give the window default dimensions
 155     inline void SetDefaultSize(const wxSize& size) { m_defaultSize = size; }
 156
 157 // Event handlers
 158     // Called by layout algorithm to allow window to take a bit out of the
 159     // client rectangle, and size itself if not in wxLAYOUT_QUERY mode.
 160     void OnCalculateLayout(wxCalculateLayoutEvent& event);
 161
 162     // Called by layout algorithm to retrieve information about the window.
 163     void OnQueryLayoutInfo(wxQueryLayoutInfoEvent& event);
 164 protected:
 165     wxLayoutAlignment           m_alignment;
 166     wxLayoutOrientation         m_orientation;
 167     wxSize                      m_defaultSize;
 168
 169 DECLARE_EVENT_TABLE()
 170 };
 171
 172 #endif // wxUSE_SASH
 173
 174 class WXDLLEXPORT wxMDIParentFrame;
 175 class WXDLLEXPORT wxFrame;
 176
 177 // This class implements the layout algorithm
 178 class WXDLLEXPORT wxLayoutAlgorithm: public wxObject
 179 {
 180 public:
 181     wxLayoutAlgorithm() {}
 182
 183     // The MDI client window is sized to whatever's left over.
 184     bool LayoutMDIFrame(wxMDIParentFrame* frame, wxRect* rect = (wxRect*) NULL);
 185
 186     // mainWindow is sized to whatever's left over. This function for backward
 187     // compatibility; use LayoutWindow.
 188     bool LayoutFrame(wxFrame* frame, wxWindow* mainWindow = (wxWindow*) NULL)
 189     {
 190         return LayoutWindow(frame, mainWindow);
 191     }
 192
 193     // mainWindow is sized to whatever's left over. This function for backward
 194     bool LayoutWindow(wxWindow* frame, wxWindow* mainWindow = (wxWindow*) NULL);
 195 };
 196
 197 #endif
 198     // _WX_LAYWIN_H_G_