fix for GetParent() in wxTR_HIDE_ROOT case

[wxWidgets.git] / src / mac / dcmemory.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        dcmemory.cpp
// Purpose:     wxMemoryDC class
// Author:      AUTHOR
// Modified by:
// Created:     01/02/97
// RCS-ID:      $Id$
// Copyright:   (c) AUTHOR
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "dcmemory.h"
#endif

#include "wx/dcmemory.h"
#include "wx/mac/private.h"

//-----------------------------------------------------------------------------
// wxMemoryDC
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxPaintDC)

wxMemoryDC::wxMemoryDC(void)
{
  m_ok = TRUE;
    SetBackground(*wxWHITE_BRUSH);
    SetBrush(*wxWHITE_BRUSH);
    SetPen(*wxBLACK_PEN);
  m_ok = FALSE;
};

wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
{
 m_ok = TRUE;
    SetBackground(*wxWHITE_BRUSH);
    SetBrush(*wxWHITE_BRUSH);
    SetPen(*wxBLACK_PEN);
  m_ok = FALSE;
};

wxMemoryDC::~wxMemoryDC()
{
	if ( m_selected.Ok() )
	{
 		UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
	}
};

void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
{
	if ( m_selected.Ok() )
	{
 		UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
	}
    m_selected = bitmap;
    if (m_selected.Ok())
    {
		if ( m_selected.GetHBITMAP() )
		{
			m_macPort = (GrafPtr) m_selected.GetHBITMAP() ;
			LockPixels( GetGWorldPixMap(  (CGrafPtr)  m_macPort ) ) ;
			wxMask * mask = bitmap.GetMask() ;
			if ( mask )
			{
				m_macMask = mask->GetMaskBitmap() ;
			}
        	SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , 0 , 0 , m_selected.GetWidth() , m_selected.GetHeight() ) ;
        	CopyRgn( (RgnHandle) m_macBoundaryClipRgn ,(RgnHandle)  m_macCurrentClipRgn ) ;
 			m_ok = TRUE ;
 		}
 		else
 		{
	        m_ok = FALSE;
 		}
  }
  else
  {
    m_ok = FALSE;
  }
}

void wxMemoryDC::DoGetSize( int *width, int *height ) const
{
  if (m_selected.Ok())
  {
    if (width) (*width) = m_selected.GetWidth();
    if (height) (*height) = m_selected.GetHeight();
  }
  else
  {
    if (width) (*width) = 0;
    if (height) (*height) = 0;
  }
}