wxWidgets/include/wx/x11/window.h

/////////////////////////////////////////////////////////////////////////////
// Name:        window.h
// Purpose:     wxWindow class
// Author:      Julian Smart
// Modified by:
// Created:     17/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_WINDOW_H_
#define _WX_WINDOW_H_

#ifdef __GNUG__
#pragma interface "window.h"
#endif

#include "wx/region.h"

// ----------------------------------------------------------------------------
// wxWindow class for Motif - see also wxWindowBase
// ----------------------------------------------------------------------------

class wxWindowX11 : public wxWindowBase
{
    friend class WXDLLEXPORT wxDC;
    friend class WXDLLEXPORT wxWindowDC;
    
public:
    wxWindowX11() { Init(); }
    
    wxWindowX11(wxWindow *parent,
        wxWindowID id,
        const wxPoint& pos = wxDefaultPosition,
        const wxSize& size = wxDefaultSize,
        long style = 0,
        const wxString& name = wxPanelNameStr)
    {
        Init();
        Create(parent, id, pos, size, style, name);
    }
    
    virtual ~wxWindowX11();
    
    bool Create(wxWindow *parent,
        wxWindowID id,
        const wxPoint& pos = wxDefaultPosition,
        const wxSize& size = wxDefaultSize,
        long style = 0,
        const wxString& name = wxPanelNameStr);
    
    virtual void Raise();
    virtual void Lower();
    
    virtual bool Show( bool show = TRUE );
    virtual bool Enable( bool enable = TRUE );
    
    virtual void SetFocus();
    
    virtual void WarpPointer(int x, int y);
    
    virtual void Refresh( bool eraseBackground = TRUE,
        const wxRect *rect = (const wxRect *) NULL );
    virtual void Update();
    
    virtual void Clear();
    
    virtual bool SetBackgroundColour( const wxColour &colour );
    virtual bool SetForegroundColour( const wxColour &colour );
    
    virtual bool SetCursor( const wxCursor &cursor );
    virtual bool SetFont( const wxFont &font );
    
    virtual int GetCharHeight() const;
    virtual int GetCharWidth() const;
    virtual void GetTextExtent(const wxString& string,
        int *x, int *y,
        int *descent = (int *) NULL,
        int *externalLeading = (int *) NULL,
        const wxFont *theFont = (const wxFont *) NULL)
        const;
    
    virtual void ScrollWindow( int dx, int dy,
        const wxRect* rect = (wxRect *) NULL );
    
    virtual void SetSizeHints(int minW, int minH,
        int maxW = -1, int maxH = -1,
        int incW = -1, int incH = -1);
#if wxUSE_DRAG_AND_DROP
    virtual void SetDropTarget( wxDropTarget *dropTarget );
#endif // wxUSE_DRAG_AND_DROP
    
    // Accept files for dragging
    virtual void DragAcceptFiles(bool accept);
    
    // Get the unique identifier of a window
    virtual WXWindow GetHandle() const { return GetMainWindow(); }
    
    // implementation from now on
    // --------------------------
    
    // accessors
    // ---------
    
    // Get main widget for this window, e.g. a text widget
    virtual WXWindow GetMainWindow() const;
    
    // Get the underlying X window and display
    WXWindow GetXWindow() const;
    WXDisplay *GetXDisplay() const;
    
    void SetLastClick(int button, long timestamp)
        { m_lastButton = button; m_lastTS = timestamp; }
    
    int GetLastClickedButton() const { return m_lastButton; }
    long GetLastClickTime() const { return m_lastTS; }
    
    // Gives window a chance to do something in response to a size message, e.g.
    // arrange status bar, toolbar etc.
    virtual bool PreResize();
    
    // Generates paint events from m_updateRegion
    void SendPaintEvents();
    
    // Generates erase events from m_clearRegion
    void SendEraseEvents();
    
    // Clip to paint region?
    bool GetClipPaintRegion() { return m_clipPaintRegion; }
    
    // Return clear region
    wxRegion &GetClearRegion() { return m_clearRegion; }
    
    // sets the fore/background colour for the given widget
    static void DoChangeForegroundColour(WXWindow widget, wxColour& foregroundColour);
    static void DoChangeBackgroundColour(WXWindow widget, wxColour& backgroundColour, bool changeArmColour = FALSE);
    
    // For implementation purposes - sometimes decorations make the client area
    // smaller
    virtual wxPoint GetClientAreaOrigin() const;
    
    // I don't want users to override what's done in idle so everything that
    // has to be done in idle time in order for wxX11 to work is done in
    // OnInternalIdle
    virtual void OnInternalIdle();
    
    // For compatibility across platforms (not in event table)
    void OnIdle(wxIdleEvent& WXUNUSED(event)) {}
    
    // Go up to a toplevel window and query which window has the focus.
    // May return NULL.
    wxWindow *GetFocusWidget();
    
protected:
    // Makes an adjustment to the window position (for example, a frame that has
    // a toolbar that it manages itself).
    virtual void AdjustForParentClientOrigin(int& x, int& y, int sizeFlags);
    
    // Responds to colour changes: passes event on to children.
    void OnSysColourChanged(wxSysColourChangedEvent& event);
    
    // For double-click detection
    long   m_lastTS;         // last timestamp
    int    m_lastButton;     // last pressed button
    
protected:
    WXWindow              m_mainWidget;
    wxRegion              m_clearRegion;
    bool                  m_clipPaintRegion;
    bool                  m_winCaptured;  // ????
    bool                  m_needsInputFocus; // Input focus set in OnIdle

    // implement the base class pure virtuals
    virtual void DoClientToScreen( int *x, int *y ) const;
    virtual void DoScreenToClient( int *x, int *y ) const;
    virtual void DoGetPosition( int *x, int *y ) const;
    virtual void DoGetSize( int *width, int *height ) const;
    virtual void DoGetClientSize( int *width, int *height ) const;
    virtual void DoSetSize(int x, int y,
        int width, int height,
        int sizeFlags = wxSIZE_AUTO);
    virtual void DoSetClientSize(int width, int height);
    virtual void DoMoveWindow(int x, int y, int width, int height);
    virtual void DoCaptureMouse();
    virtual void DoReleaseMouse();

#if wxUSE_TOOLTIPS
    virtual void DoSetToolTip( wxToolTip *tip );
#endif // wxUSE_TOOLTIPS
    
private:
    // common part of all ctors
    void Init();
    
    DECLARE_DYNAMIC_CLASS(wxWindowX11)
    DECLARE_NO_COPY_CLASS(wxWindowX11)
    DECLARE_EVENT_TABLE()
};

// ----------------------------------------------------------------------------
// A little class to switch off `size optimization' while an instance of the
// object exists: this may be useful to temporarily disable the optimisation
// which consists to do nothing when the new size is equal to the old size -
// although quite useful usually to avoid flicker, sometimes it leads to
// undesired effects.
//
// Usage: create an instance of this class on the stack to disable the size
// optimisation, it will be reenabled as soon as the object goes out from scope.
// ----------------------------------------------------------------------------

class WXDLLEXPORT wxNoOptimize
{
public:
    wxNoOptimize() { ms_count++; }
    ~wxNoOptimize() { ms_count--; }
    
    static bool CanOptimize() { return ms_count == 0; }
    
protected:
    static int ms_count;
};

#endif
// _WX_WINDOW_H_