420 lines
14 KiB
C++
420 lines
14 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/generic/splitter.h
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// Purpose: wxSplitterWindow class
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// Author: Julian Smart
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// Modified by:
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// Created: 01/02/97
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_GENERIC_SPLITTER_H_
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#define _WX_GENERIC_SPLITTER_H_
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#include "wx/window.h" // base class declaration
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#include "wx/containr.h" // wxControlContainer
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class WXDLLIMPEXP_FWD_CORE wxSplitterEvent;
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// ---------------------------------------------------------------------------
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// splitter constants
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// ---------------------------------------------------------------------------
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enum wxSplitMode
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{
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wxSPLIT_HORIZONTAL = 1,
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wxSPLIT_VERTICAL
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};
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enum
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{
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wxSPLIT_DRAG_NONE,
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wxSPLIT_DRAG_DRAGGING,
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wxSPLIT_DRAG_LEFT_DOWN
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};
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// ---------------------------------------------------------------------------
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// wxSplitterWindow maintains one or two panes, with
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// an optional vertical or horizontal split which
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// can be used with the mouse or programmatically.
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// ---------------------------------------------------------------------------
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// TODO:
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// 1) Perhaps make the borders sensitive to dragging in order to create a split.
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// The MFC splitter window manages scrollbars as well so is able to
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// put sash buttons on the scrollbars, but we probably don't want to go down
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// this path.
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// 2) for wxWidgets 2.0, we must find a way to set the WS_CLIPCHILDREN style
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// to prevent flickering. (WS_CLIPCHILDREN doesn't work in all cases so can't be
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// standard).
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class WXDLLIMPEXP_CORE wxSplitterWindow: public wxNavigationEnabled<wxWindow>
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{
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public:
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////////////////////////////////////////////////////////////////////////////
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// Public API
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// Default constructor
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wxSplitterWindow()
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{
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Init();
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}
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// Normal constructor
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wxSplitterWindow(wxWindow *parent, wxWindowID id = wxID_ANY,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxSP_3D,
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const wxString& name = wxT("splitter"))
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{
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Init();
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Create(parent, id, pos, size, style, name);
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}
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virtual ~wxSplitterWindow();
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bool Create(wxWindow *parent, wxWindowID id = wxID_ANY,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxSP_3D,
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const wxString& name = wxT("splitter"));
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// Gets the only or left/top pane
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wxWindow *GetWindow1() const { return m_windowOne; }
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// Gets the right/bottom pane
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wxWindow *GetWindow2() const { return m_windowTwo; }
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// Sets the split mode
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void SetSplitMode(int mode)
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{
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wxASSERT_MSG( mode == wxSPLIT_VERTICAL || mode == wxSPLIT_HORIZONTAL,
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wxT("invalid split mode") );
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m_splitMode = (wxSplitMode)mode;
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}
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// Gets the split mode
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wxSplitMode GetSplitMode() const { return m_splitMode; }
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// Initialize with one window
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void Initialize(wxWindow *window);
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// Associates the given window with window 2, drawing the appropriate sash
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// and changing the split mode.
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// Does nothing and returns false if the window is already split.
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// A sashPosition of 0 means choose a default sash position,
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// negative sashPosition specifies the size of right/lower pane as its
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// absolute value rather than the size of left/upper pane.
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virtual bool SplitVertically(wxWindow *window1,
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wxWindow *window2,
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int sashPosition = 0)
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{ return DoSplit(wxSPLIT_VERTICAL, window1, window2, sashPosition); }
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virtual bool SplitHorizontally(wxWindow *window1,
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wxWindow *window2,
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int sashPosition = 0)
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{ return DoSplit(wxSPLIT_HORIZONTAL, window1, window2, sashPosition); }
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// Removes the specified (or second) window from the view
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// Doesn't actually delete the window.
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bool Unsplit(wxWindow *toRemove = NULL);
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// Replaces one of the windows with another one (neither old nor new
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// parameter should be NULL)
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bool ReplaceWindow(wxWindow *winOld, wxWindow *winNew);
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// Make sure the child window sizes are updated. This is useful
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// for reducing flicker by updating the sizes before a
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// window is shown, if you know the overall size is correct.
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void UpdateSize();
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// Is the window split?
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bool IsSplit() const { return (m_windowTwo != NULL); }
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// Sets the border size
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void SetBorderSize(int WXUNUSED(width)) { }
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// Hide or show the sash and test whether it's currently hidden.
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void SetSashInvisible(bool invisible = true);
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bool IsSashInvisible() const { return HasFlag(wxSP_NOSASH); }
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// Gets the current sash size which may be 0 if it's hidden and the default
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// sash size.
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int GetSashSize() const;
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int GetDefaultSashSize() const;
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// Gets the border size
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int GetBorderSize() const;
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// Set the sash position
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void SetSashPosition(int position, bool redraw = true);
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// Gets the sash position
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int GetSashPosition() const { return m_sashPosition; }
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// Set the sash gravity
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void SetSashGravity(double gravity);
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// Gets the sash gravity
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double GetSashGravity() const { return m_sashGravity; }
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// If this is zero, we can remove panes by dragging the sash.
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void SetMinimumPaneSize(int min);
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int GetMinimumPaneSize() const { return m_minimumPaneSize; }
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// NB: the OnXXX() functions below are for backwards compatibility only,
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// don't use them in new code but handle the events instead!
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// called when the sash position is about to change, may return a new value
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// for the sash or -1 to prevent the change from happening at all
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virtual int OnSashPositionChanging(int newSashPosition);
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// Called when the sash position is about to be changed, return
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// false from here to prevent the change from taking place.
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// Repositions sash to minimum position if pane would be too small.
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// newSashPosition here is always positive or zero.
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virtual bool OnSashPositionChange(int newSashPosition);
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// If the sash is moved to an extreme position, a subwindow
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// is removed from the splitter window, and the app is
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// notified. The app should delete or hide the window.
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virtual void OnUnsplit(wxWindow *removed);
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// Called when the sash is double-clicked.
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// The default behaviour is to remove the sash if the
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// minimum pane size is zero.
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virtual void OnDoubleClickSash(int x, int y);
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////////////////////////////////////////////////////////////////////////////
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// Implementation
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// Paints the border and sash
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void OnPaint(wxPaintEvent& event);
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// Handles mouse events
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void OnMouseEvent(wxMouseEvent& ev);
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// Aborts dragging mode
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void OnMouseCaptureLost(wxMouseCaptureLostEvent& event);
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// Adjusts the panes
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void OnSize(wxSizeEvent& event);
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// In live mode, resize child windows in idle time
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void OnInternalIdle() wxOVERRIDE;
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// Draws the sash
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virtual void DrawSash(wxDC& dc);
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// Draws the sash tracker (for whilst moving the sash)
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virtual void DrawSashTracker(int x, int y);
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// Tests for x, y over sash
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virtual bool SashHitTest(int x, int y);
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// Resizes subwindows
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virtual void SizeWindows();
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#ifdef __WXMAC__
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virtual bool MacClipGrandChildren() const wxOVERRIDE { return true ; }
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#endif
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// Sets the sash size: this doesn't do anything and shouldn't be used at
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// all any more.
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wxDEPRECATED_INLINE( void SetSashSize(int WXUNUSED(width)), return; )
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protected:
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// event handlers
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#if defined(__WXMSW__) || defined(__WXMAC__)
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void OnSetCursor(wxSetCursorEvent& event);
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#endif // wxMSW
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// send the given event, return false if the event was processed and vetoed
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// by the user code
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bool DoSendEvent(wxSplitterEvent& event);
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// common part of all ctors
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void Init();
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// common part of SplitVertically() and SplitHorizontally()
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bool DoSplit(wxSplitMode mode,
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wxWindow *window1, wxWindow *window2,
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int sashPosition);
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// adjusts sash position with respect to min. pane and window sizes
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int AdjustSashPosition(int sashPos) const;
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// get either width or height depending on the split mode
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int GetWindowSize() const;
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// convert the user specified sash position which may be > 0 (as is), < 0
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// (specifying the size of the right pane) or 0 (use default) to the real
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// position to be passed to DoSetSashPosition()
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int ConvertSashPosition(int sashPos) const;
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// set the real sash position, sashPos here must be positive
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//
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// returns true if the sash position has been changed, false otherwise
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bool DoSetSashPosition(int sashPos);
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// set the sash position and send an event about it having been changed
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void SetSashPositionAndNotify(int sashPos);
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// callbacks executed when we detect that the mouse has entered or left
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// the sash
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virtual void OnEnterSash();
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virtual void OnLeaveSash();
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// set the cursor appropriate for the current split mode
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void SetResizeCursor();
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// redraw the splitter if its "hotness" changed if necessary
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void RedrawIfHotSensitive(bool isHot);
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// return the best size of the splitter equal to best sizes of its
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// subwindows
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virtual wxSize DoGetBestSize() const wxOVERRIDE;
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wxSplitMode m_splitMode;
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wxWindow* m_windowOne;
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wxWindow* m_windowTwo;
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int m_dragMode;
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int m_oldX; // current tracker position if not live mode
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int m_oldY; // current tracker position if not live mode
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int m_sashPosition; // Number of pixels from left or top
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double m_sashGravity;
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wxSize m_lastSize;
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int m_requestedSashPosition;
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int m_sashPositionCurrent; // while dragging
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wxPoint m_ptStart; // mouse position when dragging started
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int m_sashStart; // sash position when dragging started
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int m_minimumPaneSize;
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wxCursor m_sashCursorWE;
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wxCursor m_sashCursorNS;
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wxPen *m_sashTrackerPen;
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// when in live mode, set this to true to resize children in idle
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bool m_needUpdating:1;
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bool m_permitUnsplitAlways:1;
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bool m_isHot:1;
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private:
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wxDECLARE_DYNAMIC_CLASS(wxSplitterWindow);
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wxDECLARE_EVENT_TABLE();
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wxDECLARE_NO_COPY_CLASS(wxSplitterWindow);
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};
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// ----------------------------------------------------------------------------
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// event class and macros
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// ----------------------------------------------------------------------------
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// we reuse the same class for all splitter event types because this is the
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// usual wxWin convention, but the three event types have different kind of
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// data associated with them, so the accessors can be only used if the real
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// event type matches with the one for which the accessors make sense
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class WXDLLIMPEXP_CORE wxSplitterEvent : public wxNotifyEvent
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{
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public:
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wxSplitterEvent(wxEventType type = wxEVT_NULL,
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wxSplitterWindow *splitter = NULL)
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: wxNotifyEvent(type)
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{
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SetEventObject(splitter);
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if (splitter) m_id = splitter->GetId();
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}
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wxSplitterEvent(const wxSplitterEvent& event)
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: wxNotifyEvent(event), m_data(event.m_data) { }
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// SASH_POS_CHANGED methods
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// setting the sash position to -1 prevents the change from taking place at
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// all
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void SetSashPosition(int pos)
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{
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wxASSERT( GetEventType() == wxEVT_SPLITTER_SASH_POS_CHANGED
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|| GetEventType() == wxEVT_SPLITTER_SASH_POS_CHANGING);
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m_data.pos = pos;
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}
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int GetSashPosition() const
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{
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wxASSERT( GetEventType() == wxEVT_SPLITTER_SASH_POS_CHANGED
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|| GetEventType() == wxEVT_SPLITTER_SASH_POS_CHANGING);
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return m_data.pos;
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}
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// UNSPLIT event methods
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wxWindow *GetWindowBeingRemoved() const
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{
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wxASSERT( GetEventType() == wxEVT_SPLITTER_UNSPLIT );
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return m_data.win;
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}
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// DCLICK event methods
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int GetX() const
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{
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wxASSERT( GetEventType() == wxEVT_SPLITTER_DOUBLECLICKED );
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return m_data.pt.x;
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}
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int GetY() const
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{
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wxASSERT( GetEventType() == wxEVT_SPLITTER_DOUBLECLICKED );
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return m_data.pt.y;
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}
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virtual wxEvent *Clone() const wxOVERRIDE { return new wxSplitterEvent(*this); }
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private:
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friend class WXDLLIMPEXP_FWD_CORE wxSplitterWindow;
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// data for the different types of event
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union
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{
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int pos; // position for SASH_POS_CHANGED event
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wxWindow *win; // window being removed for UNSPLIT event
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struct
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{
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int x, y;
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} pt; // position of double click for DCLICK event
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} m_data;
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wxDECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxSplitterEvent);
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};
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typedef void (wxEvtHandler::*wxSplitterEventFunction)(wxSplitterEvent&);
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#define wxSplitterEventHandler(func) \
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wxEVENT_HANDLER_CAST(wxSplitterEventFunction, func)
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#define wx__DECLARE_SPLITTEREVT(evt, id, fn) \
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wx__DECLARE_EVT1(wxEVT_SPLITTER_ ## evt, id, wxSplitterEventHandler(fn))
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#define EVT_SPLITTER_SASH_POS_CHANGED(id, fn) \
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wx__DECLARE_SPLITTEREVT(SASH_POS_CHANGED, id, fn)
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#define EVT_SPLITTER_SASH_POS_CHANGING(id, fn) \
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wx__DECLARE_SPLITTEREVT(SASH_POS_CHANGING, id, fn)
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#define EVT_SPLITTER_DCLICK(id, fn) \
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wx__DECLARE_SPLITTEREVT(DOUBLECLICKED, id, fn)
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#define EVT_SPLITTER_UNSPLIT(id, fn) \
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wx__DECLARE_SPLITTEREVT(UNSPLIT, id, fn)
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// old wxEVT_COMMAND_* constants
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#define wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED wxEVT_SPLITTER_SASH_POS_CHANGED
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#define wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING wxEVT_SPLITTER_SASH_POS_CHANGING
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#define wxEVT_COMMAND_SPLITTER_DOUBLECLICKED wxEVT_SPLITTER_DOUBLECLICKED
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#define wxEVT_COMMAND_SPLITTER_UNSPLIT wxEVT_SPLITTER_UNSPLIT
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#endif // _WX_GENERIC_SPLITTER_H_
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