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     int x , y ;
 125     x = y = 0 ;
 126     window->MacWindowToRootWindow( &x , &y ) ;
 127     m_ok = true ;
 128
 129 #if wxMAC_USE_CORE_GRAPHICS
 130     m_window->GetSize( &m_width , &m_height);
 131     CGContextRef cg = (CGContextRef) window->MacGetCGContextRef();
 132     m_release = false;
 133     if ( cg == NULL )
 134     {
 135         SetGraphicsContext( wxGraphicsContext::Create( window ) ) ;
 136         SetDeviceOrigin( x, y );
 137     }
 138     else
 139     {
 140         CGContextSaveGState( cg );
 141         m_release = true ;
 142         // make sure the context is having its origin at the wx-window coordinates of the
 143         // view (read at the top of window.cpp about the differences)
 144         if ( window->MacGetLeftBorderSize() != 0 || window->MacGetTopBorderSize() != 0 )
 145             CGContextTranslateCTM( cg , -window->MacGetLeftBorderSize() , -window->MacGetTopBorderSize() );
 146
 147         SetGraphicsContext( wxGraphicsContext::CreateFromNative( cg ) );
 148     }
 149     m_graphicContext->SetPen( m_pen ) ;
 150     m_graphicContext->SetBrush( m_brush ) ;
 151     SetClippingRegion( 0 , 0 , m_width , m_height ) ;
 152 #else
 153     m_macLocalOrigin.x = x ;
 154     m_macLocalOrigin.y = y ;
 155     m_macPort = UMAGetWindowPort( (WindowRef) rootwindow->MacGetWindowRef() ) ;
 156
 157     CopyRgn( (RgnHandle) window->MacGetVisibleRegion(true).GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 158     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
 159     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 160 #endif
 161     SetBackground(MacGetBackgroundBrush(window));
 162
 163     SetFont( window->GetFont() ) ;
 164 }
 165
 166 wxWindowDC::~wxWindowDC()
 167 {
 168 #if wxMAC_USE_CORE_GRAPHICS
 169     if ( m_release && m_graphicContext )
 170     {
 171         CGContextRef cg = (CGContextRef) m_window->MacGetCGContextRef();
 172         CGContextRestoreGState(cg);
 173         //CGContextRef cg = (CGContextRef) m_graphicContext->GetNativeContext() ;
 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
 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     int width = rect.size.width;
 207     int height = rect.size.height;
 208
 209     bytesPerRow = ( ( width * 8 * 4 + 7 ) / 8 );
 210
 211     data = calloc( 1, bytesPerRow * height );
 212     context = CGBitmapContextCreate( data, width, height, 8, bytesPerRow, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaPremultipliedFirst );
 213
 214     CGContextDrawImage( context, rect, image );
 215
 216     unsigned char* buffer = (unsigned char*) data;
 217     wxBitmap bmp = wxBitmap(width, height, 32);
 218     wxAlphaPixelData pixData(bmp, wxPoint(0,0), wxSize(width, height));
 219
 220     pixData.UseAlpha();
 221     wxAlphaPixelData::Iterator p(pixData);
 222     for (int y=0; y<height; y++) {
 223         wxAlphaPixelData::Iterator rowStart = p;
 224         for (int x=0; x<width; x++) {
 225             unsigned char a = buffer[3];
 226             p.Red()   = a; buffer++;
 227             p.Green() = a; buffer++;
 228             p.Blue()  = a; buffer++;
 229             p.Alpha() = a; buffer++;
 230             ++p;
 231         }
 232         p = rowStart;
 233         p.OffsetY(pixData, 1);
 234     }
 235
 236     return bmp;
 237 }
 238
 239 /*
 240  * wxClientDC
 241  */
 242
 243 wxClientDC::wxClientDC()
 244 {
 245     m_window = NULL ;
 246 }
 247
 248 #if wxMAC_USE_CORE_GRAPHICS
 249 wxClientDC::wxClientDC(wxWindow *window) :
 250     wxWindowDC( window )
 251 {
 252     wxPoint origin = window->GetClientAreaOrigin() ;
 253     wxSize size = window->GetClientSize() ;
 254     int x , y ;
 255     x = origin.x ;
 256     y = origin.y ;
 257     window->MacWindowToRootWindow( &x , &y ) ;
 258     m_window->GetClientSize( &m_width , &m_height);
 259     SetDeviceOrigin( origin.x, origin.y );
 260     SetClippingRegion( 0 , 0 , m_width , m_height ) ;
 261 }
 262 #else
 263 wxClientDC::wxClientDC(wxWindow *window)
 264 {
 265     m_window = window ;
 266     wxTopLevelWindowMac* rootwindow = window->MacGetTopLevelWindow() ;
 267     if (!rootwindow)
 268         return;
 269
 270     WindowRef windowref = (WindowRef) rootwindow->MacGetWindowRef() ;
 271     wxPoint origin = window->GetClientAreaOrigin() ;
 272     wxSize size = window->GetClientSize() ;
 273     int x , y ;
 274     x = origin.x ;
 275     y = origin.y ;
 276     window->MacWindowToRootWindow( &x , &y ) ;
 277     m_macPort = UMAGetWindowPort( windowref ) ;
 278     m_ok = true ;
 279
 280     m_macLocalOrigin.x = x ;
 281     m_macLocalOrigin.y = y ;
 282     SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , origin.x , origin.y , origin.x + size.x , origin.y + size.y ) ;
 283     SectRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) window->MacGetVisibleRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 284     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , -origin.x , -origin.y ) ;
 285     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
 286     CopyRgn( (RgnHandle) m_macBoundaryClipRgn ,(RgnHandle)  m_macCurrentClipRgn ) ;
 287
 288     SetBackground(MacGetBackgroundBrush(window));
 289     SetFont( window->GetFont() ) ;
 290 }
 291 #endif
 292
 293 wxClientDC::~wxClientDC()
 294 {
 295 }
 296
 297 #if !wxMAC_USE_CORE_GRAPHICS
 298 void wxClientDC::DoGetSize(int *width, int *height) const
 299 {
 300     wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
 301
 302     m_window->GetClientSize( width, height );
 303 }
 304 #endif
 305
 306 /*
 307  * wxPaintDC
 308  */
 309
 310 wxPaintDC::wxPaintDC()
 311 {
 312     m_window = NULL ;
 313 }
 314
 315 #if wxMAC_USE_CORE_GRAPHICS
 316 wxPaintDC::wxPaintDC(wxWindow *window) :
 317     wxWindowDC( window )
 318 {
 319     wxPoint origin = window->GetClientAreaOrigin() ;
 320     wxSize size = window->GetClientSize() ;
 321     int x , y ;
 322     x = origin.x ;
 323     y = origin.y ;
 324     window->MacWindowToRootWindow( &x , &y ) ;
 325     m_window->GetClientSize( &m_width , &m_height);
 326     SetDeviceOrigin( origin.x, origin.y );
 327     SetClippingRegion( 0 , 0 , m_width , m_height ) ;
 328 }
 329 #else
 330 wxPaintDC::wxPaintDC(wxWindow *window)
 331 {
 332     m_window = window ;
 333     wxTopLevelWindowMac* rootwindow = window->MacGetTopLevelWindow() ;
 334     WindowRef windowref = (WindowRef) rootwindow->MacGetWindowRef() ;
 335     wxPoint origin = window->GetClientAreaOrigin() ;
 336     wxSize size = window->GetClientSize() ;
 337     int x , y ;
 338     x = origin.x ;
 339     y = origin.y ;
 340     window->MacWindowToRootWindow( &x , &y ) ;
 341     m_macPort = UMAGetWindowPort( windowref ) ;
 342     m_ok = true ;
 343
 344 #if wxMAC_USE_CORE_GRAPHICS
 345     if ( window->MacGetCGContextRef() )
 346     {
 347         m_graphicContext = new wxMacCGContext( (CGContextRef) window->MacGetCGContextRef() ) ;
 348         m_graphicContext->SetPen( m_pen ) ;
 349         m_graphicContext->SetBrush( m_brush ) ;
 350         SetClippingRegion( 0 , 0 , size.x , size.y ) ;
 351         SetBackground(MacGetBackgroundBrush(window));
 352     }
 353     else
 354     {
 355         wxLogDebug(wxT("You cannot create a wxPaintDC outside an OS-draw event") ) ;
 356         m_graphicContext = NULL ;
 357     }
 358     // there is no out-of-order drawing on OSX
 359 #else
 360     m_macLocalOrigin.x = x ;
 361     m_macLocalOrigin.y = y ;
 362     SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , origin.x , origin.y , origin.x + size.x , origin.y + size.y ) ;
 363     SectRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) window->MacGetVisibleRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 364     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , -origin.x , -origin.y ) ;
 365     SectRgn( (RgnHandle) m_macBoundaryClipRgn  , (RgnHandle) window->GetUpdateRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 366     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
 367     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 368     SetBackground(MacGetBackgroundBrush(window));
 369 #endif
 370
 371     SetFont( window->GetFont() ) ;
 372 }
 373 #endif
 374
 375 wxPaintDC::~wxPaintDC()
 376 {
 377 }
 378
 379 #if !wxMAC_USE_CORE_GRAPHICS
 380 void wxPaintDC::DoGetSize(int *width, int *height) const
 381 {
 382     wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
 383
 384     m_window->GetClientSize( width, height );
 385 }
 386 #endif