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(void)
  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
  34 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  35           : m_selected()
  36 {
  37     m_ok = true;
  38     SetBackground(*wxWHITE_BRUSH);
  39     SetBrush(*wxWHITE_BRUSH);
  40     SetPen(*wxBLACK_PEN);
  41     m_ok = false;
  42 };
  43
  44 wxMemoryDC::~wxMemoryDC()
  45 {
  46     if ( m_selected.Ok() )
  47     {
  48         UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
  49     }
  50 };
  51
  52 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  53 {
  54     if ( m_selected.Ok() )
  55     {
  56         UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
  57     }
  58     m_selected = bitmap;
  59     if (m_selected.Ok())
  60     {
  61         if ( m_selected.GetHBITMAP() )
  62         {
  63             m_macPort = (GrafPtr) m_selected.GetHBITMAP() ;
  64             LockPixels( GetGWorldPixMap(  (CGrafPtr)  m_macPort ) ) ;
  65             wxMask * mask = bitmap.GetMask() ;
  66             if ( mask )
  67             {
  68                 m_macMask = mask->GetMaskBitmap() ;
  69             }
  70             SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , 0 , 0 , m_selected.GetWidth() , m_selected.GetHeight() ) ;
  71             CopyRgn( (RgnHandle) m_macBoundaryClipRgn ,(RgnHandle)  m_macCurrentClipRgn ) ;
  72             m_ok = true ;
  73         }
  74         else
  75         {
  76             m_ok = false;
  77         }
  78     }
  79     else
  80     {
  81         m_ok = false;
  82     }
  83 }
  84
  85 void wxMemoryDC::DoGetSize( int *width, int *height ) const
  86 {
  87     if (m_selected.Ok())
  88     {
  89         if (width) (*width) = m_selected.GetWidth();
  90         if (height) (*height) = m_selected.GetHeight();
  91     }
  92     else
  93     {
  94         if (width) (*width) = 0;
  95         if (height) (*height) = 0;
  96     }
  97 }