src/mac/carbon/dcclient.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/dcclient.cpp
   3 // Purpose:     wxClientDC 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 // constants
  32 //-----------------------------------------------------------------------------
  33
  34 //-----------------------------------------------------------------------------
  35 // wxPaintDC
  36 //-----------------------------------------------------------------------------
  37
  38 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
  39 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
  40 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxWindowDC)
  41
  42 /*
  43  * wxWindowDC
  44  */
  45
  46 #include "wx/mac/uma.h"
  47 #include "wx/notebook.h"
  48 #include "wx/tabctrl.h"
  49
  50
  51 static wxBrush MacGetBackgroundBrush( wxWindow* window )
  52 {
  53     wxBrush bkdBrush = window->MacGetBackgroundBrush() ;
  54
  55 #if !TARGET_API_MAC_OSX
  56     // transparency cannot be handled by the OS when not using composited windows
  57     wxWindow* parent = window->GetParent() ;
  58
  59     // if we have some 'pseudo' transparency
  60     if ( ! bkdBrush.Ok() || bkdBrush.GetStyle() == wxTRANSPARENT || window->GetBackgroundColour() == wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE ) )
  61     {
  62         // walk up until we find something
  63         while ( parent != NULL )
  64         {
  65             if ( parent->GetBackgroundColour() != wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE ) )
  66             {
  67                 // if we have any other colours in the hierarchy
  68                 bkdBrush.SetColour( parent->GetBackgroundColour() ) ;
  69                 break ;
  70             }
  71
  72             if ( parent->IsKindOf( CLASSINFO(wxTopLevelWindow) ) )
  73             {
  74                 bkdBrush = parent->MacGetBackgroundBrush() ;
  75                 break ;
  76             }
  77
  78             if ( parent->IsKindOf( CLASSINFO( wxNotebook ) )
  79 #if wxUSE_TAB_DIALOG
  80                  || parent->IsKindOf( CLASSINFO( wxTabCtrl ) )
  81 #endif // wxUSE_TAB_DIALOG
  82                 )
  83             {
  84                 Rect extent = { 0 , 0 , 0 , 0 } ;
  85                 int x , y ;
  86                 x = y = 0 ;
  87                 wxSize size = parent->GetSize() ;
  88                 parent->MacClientToRootWindow( &x , &y ) ;
  89                 extent.left = x ;
  90                 extent.top = y ;
  91                 extent.top-- ;
  92                 extent.right = x + size.x ;
  93                 extent.bottom = y + size.y ;
  94                 bkdBrush.MacSetThemeBackground( kThemeBackgroundTabPane , (WXRECTPTR) &extent ) ;
  95                 break ;
  96             }
  97
  98             parent = parent->GetParent() ;
  99         }
 100     }
 101
 102     if ( !bkdBrush.Ok() || bkdBrush.GetStyle() == wxTRANSPARENT )
 103     {
 104         // if we did not find something, use a default
 105         bkdBrush.MacSetTheme( kThemeBrushDialogBackgroundActive ) ;
 106     }
 107 #endif
 108
 109     return bkdBrush ;
 110 }
 111
 112 wxWindowDC::wxWindowDC()
 113 {
 114     m_window = NULL ;
 115 }
 116
 117 wxWindowDC::wxWindowDC(wxWindow *window)
 118 {
 119     m_window = window ;
 120     wxTopLevelWindowMac* rootwindow = window->MacGetTopLevelWindow() ;
 121     if (!rootwindow)
 122         return;
 123
 124     m_ok = true ;
 125
 126 #if wxMAC_USE_CORE_GRAPHICS
 127     m_window->GetSize( &m_width , &m_height);
 128     CGContextRef cg = (CGContextRef) window->MacGetCGContextRef();
 129     m_release = false;
 130     if ( cg == NULL )
 131     {
 132         SetGraphicsContext( wxGraphicsContext::Create( window ) ) ;
 133     }
 134     else
 135     {
 136         CGContextSaveGState( cg );
 137         m_release = true ;
 138         // make sure the context is having its origin at the wx-window coordinates of the
 139         // view (read at the top of window.cpp about the differences)
 140         if ( window->MacGetLeftBorderSize() != 0 || window->MacGetTopBorderSize() != 0 )
 141             CGContextTranslateCTM( cg , -window->MacGetLeftBorderSize() , -window->MacGetTopBorderSize() );
 142
 143         SetGraphicsContext( wxGraphicsContext::CreateFromNative( cg ) );
 144     }
 145     m_graphicContext->SetPen( m_pen ) ;
 146     m_graphicContext->SetBrush( m_brush ) ;
 147     SetClippingRegion( 0 , 0 , m_width , m_height ) ;
 148 #else
 149     int x , y ;
 150     x = y = 0 ;
 151     window->MacWindowToRootWindow( &x , &y ) ;
 152     m_macLocalOrigin.x = x ;
 153     m_macLocalOrigin.y = y ;
 154     m_macPort = UMAGetWindowPort( (WindowRef) rootwindow->MacGetWindowRef() ) ;
 155
 156     CopyRgn( (RgnHandle) window->MacGetVisibleRegion(true).GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 157     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
 158     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 159 #endif
 160     SetBackground(MacGetBackgroundBrush(window));
 161
 162     SetFont( window->GetFont() ) ;
 163 }
 164
 165 wxWindowDC::~wxWindowDC()
 166 {
 167 #if wxMAC_USE_CORE_GRAPHICS
 168     if ( m_release )
 169     {
 170         // this must not necessarily be the current context, we must restore the state of the
 171         // cg we started with above (before the CGContextTranslateCTM call)
 172         CGContextRef cg = (CGContextRef) m_window->MacGetCGContextRef();
 173         CGContextRestoreGState(cg);
 174     }
 175 #endif
 176 }
 177
 178 void wxWindowDC::DoGetSize( int* width, int* height ) const
 179 {
 180 #if wxMAC_USE_CORE_GRAPHICS
 181     if ( width )
 182         *width = m_width;
 183     if ( height )
 184         *height = m_height;
 185 #else
 186     wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
 187     m_window->GetSize(width, height);
 188 #endif
 189 }
 190
 191 wxBitmap wxWindowDC::DoGetAsBitmap(const wxRect *subrect) const
 192 {
 193     ControlRef handle = (ControlRef) m_window->GetHandle();
 194     if ( !handle )
 195         return wxNullBitmap;
 196
 197     HIRect rect;
 198     CGImageRef image;
 199     CGContextRef context;
 200     void* data;
 201
 202     size_t bytesPerRow;
 203
 204     HIViewCreateOffscreenImage( handle, 0, &rect, &image);
 205
 206
 207     int width = subrect != NULL ? subrect->width : (int)rect.size.width;
 208     int height = subrect !=  NULL ? subrect->height : (int)rect.size.height ;
 209
 210     bytesPerRow = ( ( width * 8 * 4 + 7 ) / 8 );
 211
 212     data = calloc( 1, bytesPerRow * height );
 213     context = CGBitmapContextCreate( data, width, height, 8, bytesPerRow, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaPremultipliedFirst );
 214
 215     if ( subrect )
 216         rect = CGRectOffset( rect, -subrect->x, -subrect->y ) ;
 217     CGContextDrawImage( context, rect, image );
 218
 219     unsigned char* buffer = (unsigned char*) data;
 220     wxBitmap bmp = wxBitmap(width, height, 32);
 221     wxAlphaPixelData pixData(bmp, wxPoint(0,0), wxSize(width, height));
 222
 223     pixData.UseAlpha();
 224     wxAlphaPixelData::Iterator p(pixData);
 225     for (int y=0; y<height; y++) {
 226         wxAlphaPixelData::Iterator rowStart = p;
 227         for (int x=0; x<width; x++) {
 228             unsigned char a = buffer[3];
 229             p.Red()   = a; buffer++;
 230             p.Green() = a; buffer++;
 231             p.Blue()  = a; buffer++;
 232             p.Alpha() = a; buffer++;
 233             ++p;
 234         }
 235         p = rowStart;
 236         p.OffsetY(pixData, 1);
 237     }
 238
 239     return bmp;
 240 }
 241
 242 /*
 243  * wxClientDC
 244  */
 245
 246 wxClientDC::wxClientDC()
 247 {
 248     m_window = NULL ;
 249 }
 250
 251 #if wxMAC_USE_CORE_GRAPHICS
 252 wxClientDC::wxClientDC(wxWindow *window) :
 253     wxWindowDC( window )
 254 {
 255     wxPoint origin = window->GetClientAreaOrigin() ;
 256     m_window->GetClientSize( &m_width , &m_height);
 257     SetDeviceOrigin( origin.x, origin.y );
 258     SetClippingRegion( 0 , 0 , m_width , m_height ) ;
 259 }
 260 #else
 261 wxClientDC::wxClientDC(wxWindow *window)
 262 {
 263     m_window = window ;
 264     wxTopLevelWindowMac* rootwindow = window->MacGetTopLevelWindow() ;
 265     if (!rootwindow)
 266         return;
 267
 268     WindowRef windowref = (WindowRef) rootwindow->MacGetWindowRef() ;
 269     wxPoint origin = window->GetClientAreaOrigin() ;
 270     wxSize size = window->GetClientSize() ;
 271     int x , y ;
 272     x = origin.x ;
 273     y = origin.y ;
 274     window->MacWindowToRootWindow( &x , &y ) ;
 275     m_macPort = UMAGetWindowPort( windowref ) ;
 276     m_ok = true ;
 277
 278     m_macLocalOrigin.x = x ;
 279     m_macLocalOrigin.y = y ;
 280     SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , origin.x , origin.y , origin.x + size.x , origin.y + size.y ) ;
 281     SectRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) window->MacGetVisibleRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 282     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , -origin.x , -origin.y ) ;
 283     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
 284     CopyRgn( (RgnHandle) m_macBoundaryClipRgn ,(RgnHandle)  m_macCurrentClipRgn ) ;
 285
 286     SetBackground(MacGetBackgroundBrush(window));
 287     SetFont( window->GetFont() ) ;
 288 }
 289 #endif
 290
 291 wxClientDC::~wxClientDC()
 292 {
 293 }
 294
 295 #if !wxMAC_USE_CORE_GRAPHICS
 296 void wxClientDC::DoGetSize(int *width, int *height) const
 297 {
 298     wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
 299
 300     m_window->GetClientSize( width, height );
 301 }
 302 #endif
 303
 304 /*
 305  * wxPaintDC
 306  */
 307
 308 wxPaintDC::wxPaintDC()
 309 {
 310     m_window = NULL ;
 311 }
 312
 313 #if wxMAC_USE_CORE_GRAPHICS
 314 wxPaintDC::wxPaintDC(wxWindow *window) :
 315     wxWindowDC( window )
 316 {
 317     wxPoint origin = window->GetClientAreaOrigin() ;
 318     m_window->GetClientSize( &m_width , &m_height);
 319     SetDeviceOrigin( origin.x, origin.y );
 320     SetClippingRegion( 0 , 0 , m_width , m_height ) ;
 321 }
 322 #else
 323 wxPaintDC::wxPaintDC(wxWindow *window)
 324 {
 325     m_window = window ;
 326     wxTopLevelWindowMac* rootwindow = window->MacGetTopLevelWindow() ;
 327     WindowRef windowref = (WindowRef) rootwindow->MacGetWindowRef() ;
 328     wxPoint origin = window->GetClientAreaOrigin() ;
 329     wxSize size = window->GetClientSize() ;
 330     int x , y ;
 331     x = origin.x ;
 332     y = origin.y ;
 333     window->MacWindowToRootWindow( &x , &y ) ;
 334     m_macPort = UMAGetWindowPort( windowref ) ;
 335     m_ok = true ;
 336
 337 #if wxMAC_USE_CORE_GRAPHICS
 338     if ( window->MacGetCGContextRef() )
 339     {
 340         m_graphicContext = new wxMacCGContext( (CGContextRef) window->MacGetCGContextRef() ) ;
 341         m_graphicContext->SetPen( m_pen ) ;
 342         m_graphicContext->SetBrush( m_brush ) ;
 343         SetClippingRegion( 0 , 0 , size.x , size.y ) ;
 344         SetBackground(MacGetBackgroundBrush(window));
 345     }
 346     else
 347     {
 348         wxLogDebug(wxT("You cannot create a wxPaintDC outside an OS-draw event") ) ;
 349         m_graphicContext = NULL ;
 350     }
 351     // there is no out-of-order drawing on OSX
 352 #else
 353     m_macLocalOrigin.x = x ;
 354     m_macLocalOrigin.y = y ;
 355     SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , origin.x , origin.y , origin.x + size.x , origin.y + size.y ) ;
 356     SectRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) window->MacGetVisibleRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 357     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , -origin.x , -origin.y ) ;
 358     SectRgn( (RgnHandle) m_macBoundaryClipRgn  , (RgnHandle) window->GetUpdateRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 359     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
 360     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 361     SetBackground(MacGetBackgroundBrush(window));
 362 #endif
 363
 364     SetFont( window->GetFont() ) ;
 365 }
 366 #endif
 367
 368 wxPaintDC::~wxPaintDC()
 369 {
 370 }
 371
 372 #if !wxMAC_USE_CORE_GRAPHICS
 373 void wxPaintDC::DoGetSize(int *width, int *height) const
 374 {
 375     wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
 376
 377     m_window->GetClientSize( width, height );
 378 }
 379 #endif