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 #if wxMAC_USE_CORE_GRAPHICS
 116     m_release = false;
 117 #endif
 118 }
 119
 120 wxWindowDC::wxWindowDC(wxWindow *window)
 121 {
 122     m_window = window ;
 123     wxTopLevelWindowMac* rootwindow = window->MacGetTopLevelWindow() ;
 124     if (!rootwindow)
 125         return;
 126
 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     }
 137     else
 138     {
 139         CGContextSaveGState( cg );
 140         m_release = true ;
 141         // make sure the context is having its origin at the wx-window coordinates of the
 142         // view (read at the top of window.cpp about the differences)
 143         if ( window->MacGetLeftBorderSize() != 0 || window->MacGetTopBorderSize() != 0 )
 144             CGContextTranslateCTM( cg , -window->MacGetLeftBorderSize() , -window->MacGetTopBorderSize() );
 145
 146         SetGraphicsContext( wxGraphicsContext::CreateFromNative( cg ) );
 147     }
 148     m_graphicContext->SetPen( m_pen ) ;
 149     m_graphicContext->SetBrush( m_brush ) ;
 150     SetClippingRegion( 0 , 0 , m_width , m_height ) ;
 151 #else
 152     int x , y ;
 153     x = y = 0 ;
 154     window->MacWindowToRootWindow( &x , &y ) ;
 155     m_macLocalOrigin.x = x ;
 156     m_macLocalOrigin.y = y ;
 157     m_macPort = UMAGetWindowPort( (WindowRef) rootwindow->MacGetWindowRef() ) ;
 158
 159     CopyRgn( (RgnHandle) window->MacGetVisibleRegion(true).GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 160     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
 161     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 162 #endif
 163     SetBackground(MacGetBackgroundBrush(window));
 164
 165     SetFont( window->GetFont() ) ;
 166 }
 167
 168 wxWindowDC::~wxWindowDC()
 169 {
 170 #if wxMAC_USE_CORE_GRAPHICS
 171     if ( m_release )
 172     {
 173         // this must not necessarily be the current context, we must restore the state of the
 174         // cg we started with above (before the CGContextTranslateCTM call)
 175         CGContextRef cg = (CGContextRef) m_window->MacGetCGContextRef();
 176         CGContextRestoreGState(cg);
 177     }
 178 #endif
 179 }
 180
 181 void wxWindowDC::DoGetSize( int* width, int* height ) const
 182 {
 183 #if wxMAC_USE_CORE_GRAPHICS
 184     if ( width )
 185         *width = m_width;
 186     if ( height )
 187         *height = m_height;
 188 #else
 189     wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
 190     m_window->GetSize(width, height);
 191 #endif
 192 }
 193
 194 wxBitmap wxWindowDC::DoGetAsBitmap(const wxRect *subrect) const
 195 {
 196     ControlRef handle = (ControlRef) m_window->GetHandle();
 197     if ( !handle )
 198         return wxNullBitmap;
 199
 200     HIRect rect;
 201     CGImageRef image;
 202     CGContextRef context;
 203     void* data;
 204
 205     size_t bytesPerRow;
 206
 207     HIViewCreateOffscreenImage( handle, 0, &rect, &image);
 208
 209
 210     int width = subrect != NULL ? subrect->width : (int)rect.size.width;
 211     int height = subrect !=  NULL ? subrect->height : (int)rect.size.height ;
 212
 213     bytesPerRow = ( ( width * 8 * 4 + 7 ) / 8 );
 214
 215     data = calloc( 1, bytesPerRow * height );
 216     context = CGBitmapContextCreate( data, width, height, 8, bytesPerRow, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaPremultipliedFirst );
 217
 218     if ( subrect )
 219         rect = CGRectOffset( rect, -subrect->x, -subrect->y ) ;
 220     CGContextDrawImage( context, rect, image );
 221
 222     unsigned char* buffer = (unsigned char*) data;
 223     wxBitmap bmp = wxBitmap(width, height, 32);
 224     wxAlphaPixelData pixData(bmp, wxPoint(0,0), wxSize(width, height));
 225
 226     pixData.UseAlpha();
 227     wxAlphaPixelData::Iterator p(pixData);
 228     for (int y=0; y<height; y++) {
 229         wxAlphaPixelData::Iterator rowStart = p;
 230         for (int x=0; x<width; x++) {
 231             unsigned char a = buffer[3];
 232             p.Red()   = a; buffer++;
 233             p.Green() = a; buffer++;
 234             p.Blue()  = a; buffer++;
 235             p.Alpha() = a; buffer++;
 236             ++p;
 237         }
 238         p = rowStart;
 239         p.OffsetY(pixData, 1);
 240     }
 241
 242     return bmp;
 243 }
 244
 245 /*
 246  * wxClientDC
 247  */
 248
 249 wxClientDC::wxClientDC()
 250 {
 251     m_window = NULL ;
 252 }
 253
 254 #if wxMAC_USE_CORE_GRAPHICS
 255 wxClientDC::wxClientDC(wxWindow *window) :
 256     wxWindowDC( window )
 257 {
 258     wxPoint origin = window->GetClientAreaOrigin() ;
 259     m_window->GetClientSize( &m_width , &m_height);
 260     SetDeviceOrigin( origin.x, origin.y );
 261     SetClippingRegion( 0 , 0 , m_width , m_height ) ;
 262 }
 263 #else
 264 wxClientDC::wxClientDC(wxWindow *window)
 265 {
 266     m_window = window ;
 267     wxTopLevelWindowMac* rootwindow = window->MacGetTopLevelWindow() ;
 268     if (!rootwindow)
 269         return;
 270
 271     WindowRef windowref = (WindowRef) rootwindow->MacGetWindowRef() ;
 272     wxPoint origin = window->GetClientAreaOrigin() ;
 273     wxSize size = window->GetClientSize() ;
 274     int x , y ;
 275     x = origin.x ;
 276     y = origin.y ;
 277     window->MacWindowToRootWindow( &x , &y ) ;
 278     m_macPort = UMAGetWindowPort( windowref ) ;
 279     m_ok = true ;
 280
 281     m_macLocalOrigin.x = x ;
 282     m_macLocalOrigin.y = y ;
 283     SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , origin.x , origin.y , origin.x + size.x , origin.y + size.y ) ;
 284     SectRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) window->MacGetVisibleRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 285     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , -origin.x , -origin.y ) ;
 286     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
 287     CopyRgn( (RgnHandle) m_macBoundaryClipRgn ,(RgnHandle)  m_macCurrentClipRgn ) ;
 288
 289     SetBackground(MacGetBackgroundBrush(window));
 290     SetFont( window->GetFont() ) ;
 291 }
 292 #endif
 293
 294 wxClientDC::~wxClientDC()
 295 {
 296 }
 297
 298 #if !wxMAC_USE_CORE_GRAPHICS
 299 void wxClientDC::DoGetSize(int *width, int *height) const
 300 {
 301     wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
 302
 303     m_window->GetClientSize( width, height );
 304 }
 305 #endif
 306
 307 /*
 308  * wxPaintDC
 309  */
 310
 311 wxPaintDC::wxPaintDC()
 312 {
 313     m_window = NULL ;
 314 }
 315
 316 #if wxMAC_USE_CORE_GRAPHICS
 317 wxPaintDC::wxPaintDC(wxWindow *window) :
 318     wxWindowDC( window )
 319 {
 320     wxPoint origin = window->GetClientAreaOrigin() ;
 321     m_window->GetClientSize( &m_width , &m_height);
 322     SetDeviceOrigin( origin.x, origin.y );
 323     SetClippingRegion( 0 , 0 , m_width , m_height ) ;
 324 }
 325 #else
 326 wxPaintDC::wxPaintDC(wxWindow *window)
 327 {
 328     m_window = window ;
 329     wxTopLevelWindowMac* rootwindow = window->MacGetTopLevelWindow() ;
 330     WindowRef windowref = (WindowRef) rootwindow->MacGetWindowRef() ;
 331     wxPoint origin = window->GetClientAreaOrigin() ;
 332     wxSize size = window->GetClientSize() ;
 333     int x , y ;
 334     x = origin.x ;
 335     y = origin.y ;
 336     window->MacWindowToRootWindow( &x , &y ) ;
 337     m_macPort = UMAGetWindowPort( windowref ) ;
 338     m_ok = true ;
 339
 340 #if wxMAC_USE_CORE_GRAPHICS
 341     if ( window->MacGetCGContextRef() )
 342     {
 343         m_graphicContext = new wxMacCGContext( (CGContextRef) window->MacGetCGContextRef() ) ;
 344         m_graphicContext->SetPen( m_pen ) ;
 345         m_graphicContext->SetBrush( m_brush ) ;
 346         SetClippingRegion( 0 , 0 , size.x , size.y ) ;
 347         SetBackground(MacGetBackgroundBrush(window));
 348     }
 349     else
 350     {
 351         wxLogDebug(wxT("You cannot create a wxPaintDC outside an OS-draw event") ) ;
 352         m_graphicContext = NULL ;
 353     }
 354     // there is no out-of-order drawing on OSX
 355 #else
 356     m_macLocalOrigin.x = x ;
 357     m_macLocalOrigin.y = y ;
 358     SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , origin.x , origin.y , origin.x + size.x , origin.y + size.y ) ;
 359     SectRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) window->MacGetVisibleRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 360     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , -origin.x , -origin.y ) ;
 361     SectRgn( (RgnHandle) m_macBoundaryClipRgn  , (RgnHandle) window->GetUpdateRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
 362     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
 363     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 364     SetBackground(MacGetBackgroundBrush(window));
 365 #endif
 366
 367     SetFont( window->GetFont() ) ;
 368 }
 369 #endif
 370
 371 wxPaintDC::~wxPaintDC()
 372 {
 373 }
 374
 375 #if !wxMAC_USE_CORE_GRAPHICS
 376 void wxPaintDC::DoGetSize(int *width, int *height) const
 377 {
 378     wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
 379
 380     m_window->GetClientSize( width, height );
 381 }
 382 #endif