src/mac/classic/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/classic/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/wxprec.h"
  13
  14 #include "wx/dcmemory.h"
  15
  16 #include "wx/mac/private.h"
  17
  18 //-----------------------------------------------------------------------------
  19 // wxMemoryDC
  20 //-----------------------------------------------------------------------------
  21
  22 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxPaintDC)
  23
  24 wxMemoryDC::wxMemoryDC( const wxBitmap& bitmap )
  25           : m_selected()
  26 {
  27     m_ok = true;
  28     SetBackground(*wxWHITE_BRUSH);
  29     SetBrush(*wxWHITE_BRUSH);
  30     SetPen(*wxBLACK_PEN);
  31     m_ok = false;
  32
  33     if ( bitmap.IsOk() )
  34         SelectObject(bitmap);
  35 };
  36
  37 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  38           : m_selected()
  39 {
  40     m_ok = true;
  41     SetBackground(*wxWHITE_BRUSH);
  42     SetBrush(*wxWHITE_BRUSH);
  43     SetPen(*wxBLACK_PEN);
  44     m_ok = false;
  45 };
  46
  47 wxMemoryDC::~wxMemoryDC()
  48 {
  49     if ( m_selected.Ok() )
  50     {
  51         UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
  52     }
  53 };
  54
  55 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  56 {
  57     if ( m_selected.Ok() )
  58     {
  59         UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
  60     }
  61     m_selected = bitmap;
  62     if (m_selected.Ok())
  63     {
  64         if ( m_selected.GetHBITMAP() )
  65         {
  66             m_macPort = (GrafPtr) m_selected.GetHBITMAP() ;
  67             LockPixels( GetGWorldPixMap(  (CGrafPtr)  m_macPort ) ) ;
  68             wxMask * mask = bitmap.GetMask() ;
  69             if ( mask )
  70             {
  71                 m_macMask = mask->GetMaskBitmap() ;
  72             }
  73             SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , 0 , 0 , m_selected.GetWidth() , m_selected.GetHeight() ) ;
  74             CopyRgn( (RgnHandle) m_macBoundaryClipRgn ,(RgnHandle)  m_macCurrentClipRgn ) ;
  75             m_ok = true ;
  76         }
  77         else
  78         {
  79             m_ok = false;
  80         }
  81     }
  82     else
  83     {
  84         m_ok = false;
  85     }
  86 }
  87
  88 void wxMemoryDC::DoGetSize( int *width, int *height ) const
  89 {
  90     if (m_selected.Ok())
  91     {
  92         if (width) (*width) = m_selected.GetWidth();
  93         if (height) (*height) = m_selected.GetHeight();
  94     }
  95     else
  96     {
  97         if (width) (*width) = 0;
  98         if (height) (*height) = 0;
  99     }
 100 }