src/mac/carbon/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/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 #include "wx/graphics.h"
  16
  17 #include "wx/mac/private.h"
  18
  19 //-----------------------------------------------------------------------------
  20 // wxMemoryDC
  21 //-----------------------------------------------------------------------------
  22
  23 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxPaintDC)
  24
  25 void wxMemoryDC::Init()
  26 {
  27     m_ok = true;
  28     SetBackground(*wxWHITE_BRUSH);
  29     SetBrush(*wxWHITE_BRUSH);
  30     SetPen(*wxBLACK_PEN);
  31     SetFont(*wxNORMAL_FONT);
  32     m_ok = false;
  33 }
  34
  35 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  36 : m_selected()
  37 {
  38     Init();
  39 }
  40
  41 wxMemoryDC::~wxMemoryDC()
  42 {
  43     if ( m_selected.Ok() )
  44     {
  45 #if wxMAC_USE_CORE_GRAPHICS
  46         m_selected.EndRawAccess() ;
  47         delete m_graphicContext ;
  48         m_graphicContext = NULL ;
  49 #else
  50 // TODO: UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
  51 #endif
  52     }
  53 }
  54
  55 void wxMemoryDC::DoSelect( const wxBitmap& bitmap )
  56 {
  57     if ( m_selected.Ok() )
  58     {
  59 #if wxMAC_USE_CORE_GRAPHICS
  60         m_selected.EndRawAccess() ;
  61         delete m_graphicContext ;
  62         m_graphicContext = NULL ;
  63 #else
  64 // TODO: UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
  65 #endif
  66     }
  67
  68     m_selected = bitmap;
  69     if (m_selected.Ok())
  70     {
  71 #if wxMAC_USE_CORE_GRAPHICS
  72         if ( m_selected.GetDepth() != 1 )
  73             m_selected.UseAlpha() ;
  74         m_selected.BeginRawAccess() ;
  75                 m_width = bitmap.GetWidth();
  76                 m_height = bitmap.GetHeight();
  77         CGColorSpaceRef genericColorSpace  = wxMacGetGenericRGBColorSpace();
  78         CGContextRef bmCtx = (CGContextRef) m_selected.GetHBITMAP();
  79
  80         if ( bmCtx )
  81         {
  82             CGContextSetFillColorSpace( bmCtx, genericColorSpace );
  83             CGContextSetStrokeColorSpace( bmCtx, genericColorSpace );
  84                         SetGraphicsContext( wxGraphicsContext::CreateFromNative( bmCtx ) );
  85         }
  86         m_ok = (m_graphicContext != NULL) ;
  87
  88 #else
  89         m_macPort = m_selected.GetHBITMAP( &m_macMask ) ;
  90         m_ok = (m_macPort != NULL) ;
  91         if (m_ok)
  92         {
  93             LockPixels( GetGWorldPixMap( (CGrafPtr) m_macPort ) ) ;
  94             SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , 0 , 0 , m_selected.GetWidth() , m_selected.GetHeight() ) ;
  95             CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
  96         }
  97 #endif
  98     }
  99     else
 100     {
 101         m_ok = false;
 102     }
 103 }
 104
 105 void wxMemoryDC::DoGetSize( int *width, int *height ) const
 106 {
 107     if (m_selected.Ok())
 108     {
 109         if (width)
 110             (*width) = m_selected.GetWidth();
 111         if (height)
 112             (*height) = m_selected.GetHeight();
 113     }
 114     else
 115     {
 116         if (width)
 117             (*width) = 0;
 118         if (height)
 119             (*height) = 0;
 120     }
 121 }