src/mac/carbon/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 #ifdef __GNUG__
  13 #pragma implementation "dcmemory.h"
  14 #endif
  15
  16 #include "wx/dcmemory.h"
  17 #include "wx/mac/private.h"
  18
  19 //-----------------------------------------------------------------------------
  20 // wxMemoryDC
  21 //-----------------------------------------------------------------------------
  22
  23 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxPaintDC)
  24
  25 wxMemoryDC::wxMemoryDC(void)
  26 : m_selected()
  27 {
  28     m_ok = TRUE;
  29     SetBackground(*wxWHITE_BRUSH);
  30     SetBrush(*wxWHITE_BRUSH);
  31     SetPen(*wxBLACK_PEN);
  32     m_ok = FALSE;
  33 };
  34
  35 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  36 : m_selected()
  37 {
  38     m_ok = TRUE;
  39     SetBackground(*wxWHITE_BRUSH);
  40     SetBrush(*wxWHITE_BRUSH);
  41     SetPen(*wxBLACK_PEN);
  42     m_ok = FALSE;
  43 };
  44
  45 wxMemoryDC::~wxMemoryDC()
  46 {
  47     if ( m_selected.Ok() )
  48     {
  49         UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
  50     }
  51 };
  52
  53 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  54 {
  55     if ( m_selected.Ok() )
  56     {
  57         UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
  58     }
  59     m_selected = bitmap;
  60     if (m_selected.Ok())
  61     {
  62         if ( m_selected.GetHBITMAP() )
  63         {
  64             m_macPort = (GrafPtr) m_selected.GetHBITMAP() ;
  65             LockPixels( GetGWorldPixMap(  (CGrafPtr)  m_macPort ) ) ;
  66             wxMask * mask = bitmap.GetMask() ;
  67             if ( mask )
  68             {
  69                 m_macMask = mask->GetMaskBitmap() ;
  70             }
  71             SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , 0 , 0 , m_selected.GetWidth() , m_selected.GetHeight() ) ;
  72             CopyRgn( (RgnHandle) m_macBoundaryClipRgn ,(RgnHandle)  m_macCurrentClipRgn ) ;
  73             m_ok = TRUE ;
  74         }
  75         else
  76         {
  77             m_ok = FALSE;
  78         }
  79     }
  80     else
  81     {
  82         m_ok = FALSE;
  83     }
  84 }
  85
  86 void wxMemoryDC::DoGetSize( int *width, int *height ) const
  87 {
  88     if (m_selected.Ok())
  89     {
  90         if (width) (*width) = m_selected.GetWidth();
  91         if (height) (*height) = m_selected.GetHeight();
  92     }
  93     else
  94     {
  95         if (width) (*width) = 0;
  96         if (height) (*height) = 0;
  97     }
  98 }
  99
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