wxWidgets/include/wx/generic/splitter.h

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/////////////////////////////////////////////////////////////////////////////
// Name: splitter.h
// Purpose: wxSplitterWindow class
// Author: Julian Smart
// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) Julian Smart and Markus Holzem
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#ifndef __SPLITTERH_G__
#define __SPLITTERH_G__
#ifdef __GNUG__
#pragma interface "splitter.h"
#endif
#include "wx/window.h" // base class declaration
class WXDLLEXPORT wxSplitterEvent;
// ---------------------------------------------------------------------------
// splitter constants
// ---------------------------------------------------------------------------
enum
{
wxSPLIT_HORIZONTAL = 1,
wxSPLIT_VERTICAL
};
enum
{
wxSPLIT_DRAG_NONE,
wxSPLIT_DRAG_DRAGGING,
wxSPLIT_DRAG_LEFT_DOWN
};
// ---------------------------------------------------------------------------
// wxSplitterWindow maintains one or two panes, with
// an optional vertical or horizontal split which
// can be used with the mouse or programmatically.
// ---------------------------------------------------------------------------
// TODO:
// 1) Perhaps make the borders sensitive to dragging in order to create a split.
// The MFC splitter window manages scrollbars as well so is able to
// put sash buttons on the scrollbars, but we probably don't want to go down
// this path.
// 2) for wxWindows 2.0, we must find a way to set the WS_CLIPCHILDREN style
// to prevent flickering. (WS_CLIPCHILDREN doesn't work in all cases so can't be
// standard).
class WXDLLEXPORT wxSplitterWindow: public wxWindow
{
public:
////////////////////////////////////////////////////////////////////////////
// Public API
// Default constructor
wxSplitterWindow();
// Normal constructor
wxSplitterWindow(wxWindow *parent, wxWindowID id = -1,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = wxSP_3D|wxCLIP_CHILDREN,
const wxString& name = "splitter");
~wxSplitterWindow();
// Gets the only or left/top pane
wxWindow *GetWindow1() const { return m_windowOne; }
// Gets the right/bottom pane
wxWindow *GetWindow2() const { return m_windowTwo; }
// Sets the split mode
void SetSplitMode(int mode) { m_splitMode = mode; }
// Gets the split mode
int GetSplitMode() const { return m_splitMode; };
// Initialize with one window
void Initialize(wxWindow *window);
// Associates the given window with window 2, drawing the appropriate sash
// and changing the split mode.
// Does nothing and returns FALSE if the window is already split.
// A sashPosition of 0 means choose a default sash position,
// negative sashPosition specifies the size of right/lower pane as it's
// absolute value rather than the size of left/upper pane.
virtual bool SplitVertically(wxWindow *window1,
wxWindow *window2,
int sashPosition = 0);
virtual bool SplitHorizontally(wxWindow *window1,
wxWindow *window2,
int sashPosition = 0);
// Removes the specified (or second) window from the view
// Doesn't actually delete the window.
bool Unsplit(wxWindow *toRemove = (wxWindow *) NULL);
// Replaces one of the windows with another one (neither old nor new
// parameter should be NULL)
bool ReplaceWindow(wxWindow *winOld, wxWindow *winNew);
// Is the window split?
bool IsSplit() const { return (m_windowTwo != NULL); }
// Sets the sash size
void SetSashSize(int width) { m_sashSize = width; }
// Sets the border size
void SetBorderSize(int width) { m_borderSize = width; }
// Gets the sash size
int GetSashSize() const { return m_sashSize; }
// Gets the border size
int GetBorderSize() const { return m_borderSize; }
// Set the sash position
void SetSashPosition(int position, bool redraw = TRUE);
// Gets the sash position
int GetSashPosition() const { return m_sashPosition; }
// If this is zero, we can remove panes by dragging the sash.
void SetMinimumPaneSize(int min) { m_minimumPaneSize = min; }
int GetMinimumPaneSize() const { return m_minimumPaneSize; }
// Called when the sash position is about to be changed, return
// FALSE from here to prevent the change from taking place.
// Repositions sash to minimum position if pane would be too small.
// newSashPosition here is always positive or zero.
virtual bool OnSashPositionChange(int WXUNUSED(newSashPosition))
{ return TRUE; }
// If the sash is moved to an extreme position, a subwindow
// is removed from the splitter window, and the app is
// notified. The app should delete or hide the window.
virtual void OnUnsplit(wxWindow *WXUNUSED(removed)) { }
// Called when the sash is double-clicked.
// The default behaviour is to remove the sash if the
// minimum pane size is zero.
virtual void OnDoubleClickSash(int WXUNUSED(x), int WXUNUSED(y)) { }
////////////////////////////////////////////////////////////////////////////
// Implementation
// Paints the border and sash
void OnPaint(wxPaintEvent& event);
// Handles mouse events
void OnMouseEvent(wxMouseEvent& ev);
// Adjusts the panes
void OnSize(wxSizeEvent& event);
// In live mode, resize child windows in idle time
void OnIdle(wxIdleEvent& event);
// Draws borders
void DrawBorders(wxDC& dc);
// Draws the sash
void DrawSash(wxDC& dc);
// Draws the sash tracker (for whilst moving the sash)
void DrawSashTracker(int x, int y);
// Tests for x, y over sash
bool SashHitTest(int x, int y, int tolerance = 2);
// Resizes subwindows
void SizeWindows();
// Initialize colours
void InitColours();
protected:
// our event handlers
void OnSashPosChanged(wxSplitterEvent& event);
void OnSashPosChanging(wxSplitterEvent& event);
void OnDoubleClick(wxSplitterEvent& event);
void OnUnsplitEvent(wxSplitterEvent& event);
void SendUnsplitEvent(wxWindow *winRemoved);
int m_splitMode;
bool m_permitUnsplitAlways;
bool m_needUpdating; // when in live mode, set the to TRUE to resize children in idle
wxWindow* m_windowOne;
wxWindow* m_windowTwo;
int m_dragMode;
int m_oldX;
int m_oldY;
int m_borderSize;
int m_sashSize; // Sash width or height
int m_sashPosition; // Number of pixels from left or top
int m_firstX;
int m_firstY;
int m_minimumPaneSize;
wxCursor* m_sashCursorWE;
wxCursor* m_sashCursorNS;
wxPen* m_sashTrackerPen;
wxPen* m_lightShadowPen;
wxPen* m_mediumShadowPen;
wxPen* m_darkShadowPen;
wxPen* m_hilightPen;
wxBrush* m_faceBrush;
wxPen* m_facePen;
private:
DECLARE_DYNAMIC_CLASS(wxSplitterWindow)
DECLARE_EVENT_TABLE()
};
// ----------------------------------------------------------------------------
// event class and macros
// ----------------------------------------------------------------------------
// we reuse the same class for all splitter event types because this is the
// usual wxWin convention, but the three event types have different kind of
// data associated with them, so the accessors can be only used if the real
// event type matches with the one for which the accessors make sense
class WXDLLEXPORT wxSplitterEvent : public wxCommandEvent
{
public:
wxSplitterEvent(wxEventType type = wxEVT_NULL,
wxSplitterWindow *splitter = (wxSplitterWindow *)NULL)
: wxCommandEvent(type)
{
SetEventObject(splitter);
}
// SASH_POS_CHANGED methods
// setting the sash position to -1 prevents the change from taking place at
// all
void SetSashPosition(int pos)
{
wxASSERT( GetEventType() == wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED
|| GetEventType() == wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING);
m_data.pos = pos;
}
int GetSashPosition() const
{
wxASSERT( GetEventType() == wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED
|| GetEventType() == wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING);
return m_data.pos;
}
// UNSPLIT event methods
wxWindow *GetWindowBeingRemoved() const
{
wxASSERT( GetEventType() == wxEVT_COMMAND_SPLITTER_UNSPLIT );
return m_data.win;
}
// DCLICK event methods
int GetX() const
{
wxASSERT( GetEventType() == wxEVT_COMMAND_SPLITTER_DOUBLECLICKED );
return m_data.pt.x;
}
int GetY() const
{
wxASSERT( GetEventType() == wxEVT_COMMAND_SPLITTER_DOUBLECLICKED );
return m_data.pt.y;
}
private:
friend class WXDLLEXPORT wxSplitterWindow;
// data for the different types of event
union
{
int pos; // position for SASH_POS_CHANGED event
wxWindow *win; // window being removed for UNSPLIT event
struct
{
int x, y;
} pt; // position of double click for DCLICK event
} m_data;
DECLARE_DYNAMIC_CLASS(wxSplitterEvent)
};
typedef void (wxEvtHandler::*wxSplitterEventFunction)(wxSplitterEvent&);
#define EVT_SPLITTER_SASH_POS_CHANGED(id, fn) \
{ \
wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED, \
id, \
-1, \
(wxObjectEventFunction)(wxEventFunction)(wxSplitterEventFunction) &fn, \
NULL \
},
#define EVT_SPLITTER_SASH_POS_CHANGING(id, fn) \
{ \
wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING, \
id, \
-1, \
(wxObjectEventFunction)(wxEventFunction)(wxSplitterEventFunction) &fn, \
NULL \
},
#define EVT_SPLITTER_DCLICK(id, fn) \
{ \
wxEVT_COMMAND_SPLITTER_DOUBLECLICKED, \
id, \
-1, \
(wxObjectEventFunction)(wxEventFunction)(wxSplitterEventFunction) &fn, \
NULL \
},
#define EVT_SPLITTER_UNSPLIT(id, fn) \
{ \
wxEVT_COMMAND_SPLITTER_UNSPLIT, \
id, \
-1, \
(wxObjectEventFunction)(wxEventFunction)(wxSplitterEventFunction) &fn, \
NULL \
},
#endif // __SPLITTERH_G__