include/wx/generic/splitter.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        splitter.h
   3 // Purpose:     wxSplitterWindow class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef __SPLITTERH_G__
  13 #define __SPLITTERH_G__
  14
  15 #ifdef __GNUG__
  16 #pragma interface "splitter.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20 #include "wx/window.h"
  21 #include "wx/string.h"
  22
  23 #define WXSPLITTER_VERSION      1.0
  24
  25 #define wxSPLIT_HORIZONTAL      1
  26 #define wxSPLIT_VERTICAL        2
  27
  28 #define wxSPLIT_DRAG_NONE       0
  29 #define wxSPLIT_DRAG_DRAGGING   1
  30 #define wxSPLIT_DRAG_LEFT_DOWN  2
  31
  32 /*
  33  * wxSplitterWindow maintains one or two panes, with
  34  * an optional vertical or horizontal split which
  35  * can be used with the mouse or programmatically.
  36  */
  37
  38 // TODO:
  39 // 1) Perhaps make the borders sensitive to dragging in order to create a split.
  40 //    The MFC splitter window manages scrollbars as well so is able to
  41 //    put sash buttons on the scrollbars, but we probably don't want to go down
  42 //    this path.
  43 // 2) for wxWindows 2.0, we must find a way to set the WS_CLIPCHILDREN style
  44 //    to prevent flickering. (WS_CLIPCHILDREN doesn't work in all cases so can't be
  45 //    standard).
  46
  47 class WXDLLEXPORT wxSplitterWindow: public wxWindow
  48 {
  49   DECLARE_DYNAMIC_CLASS(wxSplitterWindow)
  50
  51  public:
  52
  53 ////////////////////////////////////////////////////////////////////////////
  54 // Public API
  55
  56     // Default constructor
  57     wxSplitterWindow(void);
  58
  59     // Normal constructor
  60     wxSplitterWindow(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition,
  61         const wxSize& size = wxDefaultSize, long style = wxSP_3D|wxCLIP_CHILDREN, const wxString& name = "splitter");
  62     ~wxSplitterWindow(void);
  63
  64     // Gets the only or left/top pane
  65     inline wxWindow *GetWindow1(void) { return m_windowOne; }
  66
  67     // Gets the right/bottom pane
  68     inline wxWindow *GetWindow2(void) { return m_windowTwo; }
  69
  70     // Sets the split mode
  71     inline void SetSplitMode(int mode) { m_splitMode = mode; }
  72
  73     // Gets the split mode
  74     inline int GetSplitMode(void) const { return m_splitMode; };
  75
  76     // Initialize with one window
  77     void Initialize(wxWindow *window);
  78
  79     // Associates the given window with window 2, drawing the appropriate sash
  80     // and changing the split mode.
  81     // Does nothing and returns FALSE if the window is already split.
  82     // A sashPosition of -1 means choose a default sash position.
  83     bool SplitVertically(wxWindow *window1, wxWindow *window2, int sashPosition = -1);
  84     bool SplitHorizontally(wxWindow *window1, wxWindow *window2, int sashPosition = -1);
  85
  86     // Removes the specified (or second) window from the view
  87     // Doesn't actually delete the window.
  88     bool Unsplit(wxWindow *toRemove = NULL);
  89
  90     // Is the window split?
  91     inline bool IsSplit(void) const { return (m_windowTwo != NULL); }
  92
  93     // Sets the sash size
  94     inline void SetSashSize(int width) { m_sashSize = width; }
  95
  96     // Sets the border size
  97     inline void SetBorderSize(int width) { m_borderSize = width; }
  98
  99     // Gets the sash size
 100     inline int GetSashSize(void) const { return m_sashSize; }
 101
 102     // Gets the border size
 103     inline int GetBorderSize(void) const { return m_borderSize; }
 104
 105     // Set the sash position
 106     void SetSashPosition(int position, bool redaw = TRUE);
 107
 108     // Gets the sash position
 109     inline int GetSashPosition(void) const { return m_sashPosition; }
 110
 111     // If this is zero, we can remove panes by dragging the sash.
 112     inline void SetMinimumPaneSize(int min) { m_minimumPaneSize = min; }
 113     inline int GetMinimumPaneSize(void) const { return m_minimumPaneSize; }
 114
 115     // If the sash is moved to an extreme position, a subwindow
 116     // is removed from the splitter window, and the app is
 117     // notified. The app should delete or hide the window.
 118     virtual void OnUnsplit(wxWindow *removed) { removed->Show(FALSE); }
 119
 120     // Called when the sash is double-clicked.
 121     // The default behaviour is to remove the sash if the
 122     // minimum pane size is zero.
 123     virtual void OnDoubleClickSash(int x, int y);
 124
 125 ////////////////////////////////////////////////////////////////////////////
 126 // Implementation
 127
 128     // Paints the border and sash
 129     void OnPaint(wxPaintEvent& event);
 130
 131     // Handles mouse events
 132     void OnMouseEvent(wxMouseEvent& ev);
 133
 134     // Adjusts the panes
 135     void OnSize(wxSizeEvent& event);
 136
 137     // Draws borders
 138     void DrawBorders(wxDC& dc);
 139
 140     // Draws the sash
 141     void DrawSash(wxDC& dc);
 142
 143     // Draws the sash tracker (for whilst moving the sash)
 144     void DrawSashTracker(int x, int y);
 145
 146     // Tests for x, y over sash
 147     bool SashHitTest(int x, int y, int tolerance = 2);
 148
 149     // Resizes subwindows
 150     void SizeWindows(void);
 151
 152     // Initialize colours
 153     void InitColours(void);
 154
 155  protected:
 156     int         m_splitMode;
 157     wxWindow*   m_windowOne;
 158     wxWindow*   m_windowTwo;
 159     int         m_dragMode;
 160     int         m_oldX;
 161     int         m_oldY;
 162     int         m_borderSize;
 163     int         m_sashSize;     // Sash width or height
 164     int         m_sashPosition; // Number of pixels from left or top
 165     int         m_firstX;
 166     int         m_firstY;
 167     int         m_minimumPaneSize;
 168     wxCursor*   m_sashCursorWE;
 169     wxCursor*   m_sashCursorNS;
 170     wxPen*      m_sashTrackerPen;
 171     wxPen*      m_lightShadowPen;
 172     wxPen*      m_mediumShadowPen;
 173     wxPen*      m_darkShadowPen;
 174     wxPen*      m_hilightPen;
 175     wxBrush*    m_faceBrush;
 176     wxPen*      m_facePen;
 177 DECLARE_EVENT_TABLE()
 178 };
 179
 180 #endif