src/mac/carbon/dcclient.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/dcclient.cpp
   3 // Purpose:     wxClientDCImpl 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/dcclient.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/log.h"
  18     #include "wx/window.h"
  19     #include "wx/dcmemory.h"
  20     #include "wx/settings.h"
  21     #include "wx/toplevel.h"
  22     #include "wx/math.h"
  23     #include "wx/region.h"
  24 #endif
  25
  26 #include "wx/graphics.h"
  27 #include "wx/rawbmp.h"
  28 #include "wx/mac/private.h"
  29
  30 //-----------------------------------------------------------------------------
  31 // wxWindowDCImpl
  32 //-----------------------------------------------------------------------------
  33
  34 IMPLEMENT_ABSTRACT_CLASS(wxWindowDCImpl, wxGCDCImpl)
  35
  36 wxWindowDCImpl::wxWindowDCImpl( wxDC *owner )
  37    : wxGCDCImpl( owner )
  38 {
  39     m_release = false;
  40 }
  41
  42 wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window )
  43    : wxGCDCImpl( owner )
  44 {
  45     m_window = window;
  46
  47     WindowRef rootwindow = (WindowRef) window->MacGetTopLevelWindowRef() ;
  48     if (!rootwindow)
  49         return;
  50
  51     m_ok = true ;
  52
  53     m_window->GetSize( &m_width , &m_height);
  54     CGContextRef cg = (CGContextRef) window->MacGetCGContextRef();
  55     m_release = false;
  56     if ( cg == NULL )
  57     {
  58         SetGraphicsContext( wxGraphicsContext::Create( window ) ) ;
  59     }
  60     else
  61     {
  62         CGContextSaveGState( cg );
  63         m_release = true ;
  64         // make sure the context is having its origin at the wx-window coordinates of the
  65         // view (read at the top of window.cpp about the differences)
  66         if ( window->MacGetLeftBorderSize() != 0 || window->MacGetTopBorderSize() != 0 )
  67             CGContextTranslateCTM( cg , -window->MacGetLeftBorderSize() , -window->MacGetTopBorderSize() );
  68
  69         SetGraphicsContext( wxGraphicsContext::CreateFromNative( cg ) );
  70     }
  71     DoSetClippingRegion( 0 , 0 , m_width , m_height ) ;
  72
  73     SetBackground(wxBrush(window->GetBackgroundColour(),wxSOLID));
  74
  75     SetFont( window->GetFont() ) ;
  76 }
  77
  78 wxWindowDCImpl::~wxWindowDCImpl()
  79 {
  80     if ( m_release )
  81     {
  82         // this must not necessarily be the current context, we must restore the state of the
  83         // cg we started with above (before the CGContextTranslateCTM call)
  84         CGContextRef cg = (CGContextRef) m_window->MacGetCGContextRef();
  85         CGContextRestoreGState(cg);
  86     }
  87 }
  88
  89 void wxWindowDCImpl::DoGetSize( int* width, int* height ) const
  90 {
  91     if ( width )
  92         *width = m_width;
  93     if ( height )
  94         *height = m_height;
  95 }
  96
  97 wxBitmap wxWindowDCImpl::DoGetAsBitmap(const wxRect *subrect) const
  98 {
  99     // wxScreenDC is derived from wxWindowDC, so a screen dc will
 100     // call this method when a Blit is performed with it as a source.
 101     if (!m_window)
 102         return wxNullBitmap;
 103
 104 #ifdef __LP64__
 105     return wxNullBitmap;
 106 #else
 107     ControlRef handle = (ControlRef) m_window->GetHandle();
 108     if ( !handle )
 109         return wxNullBitmap;
 110
 111     HIRect rect;
 112     CGImageRef image;
 113     CGContextRef context;
 114     void* data;
 115
 116     size_t bytesPerRow;
 117
 118     HIViewCreateOffscreenImage( handle, 0, &rect, &image);
 119
 120
 121     int width = subrect != NULL ? subrect->width : (int)rect.size.width;
 122     int height = subrect !=  NULL ? subrect->height : (int)rect.size.height ;
 123
 124     wxBitmap bmp = wxBitmap(width, height, 32);
 125
 126     context = (CGContextRef)bmp.GetHBITMAP();
 127
 128     CGContextSaveGState(context);
 129
 130     CGContextTranslateCTM( context, 0,  height );
 131     CGContextScaleCTM( context, 1, -1 );
 132
 133     if ( subrect )
 134         rect = CGRectOffset( rect, -subrect->x, -subrect->y ) ;
 135     CGContextDrawImage( context, rect, image );
 136
 137     CGContextRestoreGState(context);
 138
 139     return bmp;
 140 #endif
 141 }
 142
 143 /*
 144  * wxClientDCImpl
 145  */
 146
 147 IMPLEMENT_ABSTRACT_CLASS(wxClientDCImpl, wxWindowDCImpl)
 148
 149 wxClientDCImpl::wxClientDCImpl( wxDC *owner )
 150  : wxWindowDCImpl( owner )
 151 {
 152 }
 153
 154 wxClientDCImpl::wxClientDCImpl( wxDC *owner, wxWindow *window ) :
 155     wxWindowDCImpl( owner, window )
 156 {
 157     wxCHECK_RET( window, _T("invalid window in wxClientDCImpl") );
 158     wxPoint origin = window->GetClientAreaOrigin() ;
 159     m_window->GetClientSize( &m_width , &m_height);
 160     SetDeviceOrigin( origin.x, origin.y );
 161     DoSetClippingRegion( 0 , 0 , m_width , m_height ) ;
 162 }
 163
 164 wxClientDCImpl::~wxClientDCImpl()
 165 {
 166 }
 167
 168 /*
 169  * wxPaintDCImpl
 170  */
 171
 172 IMPLEMENT_ABSTRACT_CLASS(wxPaintDCImpl, wxWindowDCImpl)
 173
 174 wxPaintDCImpl::wxPaintDCImpl( wxDC *owner )
 175  : wxWindowDCImpl( owner )
 176 {
 177 }
 178
 179 wxPaintDCImpl::wxPaintDCImpl( wxDC *owner, wxWindow *window ) :
 180     wxWindowDCImpl( owner, window )
 181 {
 182     wxPoint origin = window->GetClientAreaOrigin() ;
 183     m_window->GetClientSize( &m_width , &m_height);
 184     SetDeviceOrigin( origin.x, origin.y );
 185     DoSetClippingRegion( 0 , 0 , m_width , m_height ) ;
 186 }
 187
 188 wxPaintDCImpl::~wxPaintDCImpl()
 189 {
 190 }