src/mac/classic/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dcmemory.cpp
   3 // Purpose:     wxMemoryDC class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/dcmemory.h"
  13 #include "wx/mac/private.h"
  14
  15 //-----------------------------------------------------------------------------
  16 // wxMemoryDC
  17 //-----------------------------------------------------------------------------
  18
  19 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxPaintDC)
  20
  21 wxMemoryDC::wxMemoryDC(void)
  22 : m_selected()
  23 {
  24     m_ok = TRUE;
  25     SetBackground(*wxWHITE_BRUSH);
  26     SetBrush(*wxWHITE_BRUSH);
  27     SetPen(*wxBLACK_PEN);
  28     m_ok = FALSE;
  29 };
  30
  31 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  32 : m_selected()
  33 {
  34     m_ok = TRUE;
  35     SetBackground(*wxWHITE_BRUSH);
  36     SetBrush(*wxWHITE_BRUSH);
  37     SetPen(*wxBLACK_PEN);
  38     m_ok = FALSE;
  39 };
  40
  41 wxMemoryDC::~wxMemoryDC()
  42 {
  43     if ( m_selected.Ok() )
  44     {
  45         UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
  46     }
  47 };
  48
  49 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  50 {
  51     if ( m_selected.Ok() )
  52     {
  53         UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
  54     }
  55     m_selected = bitmap;
  56     if (m_selected.Ok())
  57     {
  58         if ( m_selected.GetHBITMAP() )
  59         {
  60             m_macPort = (GrafPtr) m_selected.GetHBITMAP() ;
  61             LockPixels( GetGWorldPixMap(  (CGrafPtr)  m_macPort ) ) ;
  62             wxMask * mask = bitmap.GetMask() ;
  63             if ( mask )
  64             {
  65                 m_macMask = mask->GetMaskBitmap() ;
  66             }
  67             SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , 0 , 0 , m_selected.GetWidth() , m_selected.GetHeight() ) ;
  68             CopyRgn( (RgnHandle) m_macBoundaryClipRgn ,(RgnHandle)  m_macCurrentClipRgn ) ;
  69             m_ok = TRUE ;
  70         }
  71         else
  72         {
  73             m_ok = FALSE;
  74         }
  75     }
  76     else
  77     {
  78         m_ok = FALSE;
  79     }
  80 }
  81
  82 void wxMemoryDC::DoGetSize( int *width, int *height ) const
  83 {
  84     if (m_selected.Ok())
  85     {
  86         if (width) (*width) = m_selected.GetWidth();
  87         if (height) (*height) = m_selected.GetHeight();
  88     }
  89     else
  90     {
  91         if (width) (*width) = 0;
  92         if (height) (*height) = 0;
  93     }
  94 }
  95
  96