src/cocoa/dc.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/dc.mm
   3 // Purpose:     wxDC
   4 // Author:      David Elliott
   5 // Modified by:
   6 // Created:     2003/04/01
   7 // Copyright:   (c) 2003 David Elliott
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/cocoa/dc.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/log.h"
  17     #include "wx/math.h" //math constants
  18 #endif //WX_PRECOMP
  19
  20 #include "wx/cocoa/autorelease.h"
  21 #include "wx/cocoa/string.h"
  22 #include "wx/cocoa/ObjcRef.h"
  23
  24 #import <AppKit/NSBezierPath.h>
  25 #import <AppKit/NSTextStorage.h>
  26 #import <AppKit/NSLayoutManager.h>
  27 #import <AppKit/NSTextContainer.h>
  28 #import <AppKit/NSGraphicsContext.h>
  29 #import <AppKit/NSAffineTransform.h>
  30 #import <AppKit/NSColor.h>
  31 #import <AppKit/NSTypesetter.h>
  32 #import <AppKit/NSImage.h>
  33
  34 #include "wx/listimpl.cpp"
  35 WX_DEFINE_LIST(wxCocoaDCStack);
  36
  37 IMPLEMENT_ABSTRACT_CLASS(wxCocoaDCImpl, wxDCImpl)
  38
  39 WX_NSTextStorage wxCocoaDCImpl::sm_cocoaNSTextStorage = nil;
  40 WX_NSLayoutManager wxCocoaDCImpl::sm_cocoaNSLayoutManager = nil;
  41 WX_NSTextContainer wxCocoaDCImpl::sm_cocoaNSTextContainer = nil;
  42 wxCocoaDCStack wxCocoaDCImpl::sm_cocoaDCStack;
  43
  44 inline void CocoaSetPenForNSBezierPath(wxPen &pen, NSBezierPath *bezpath)
  45 {
  46     [pen.GetNSColor() set];
  47     const CGFloat *pattern;
  48     [bezpath setLineDash:pattern count:pen.GetCocoaLineDash(&pattern) phase:0.0];
  49     [bezpath setLineWidth:pen.GetWidth()];
  50     switch(pen.GetJoin())
  51     {
  52     case wxJOIN_BEVEL:
  53         [bezpath setLineJoinStyle:NSBevelLineJoinStyle];
  54         break;
  55     case wxJOIN_ROUND:
  56         [bezpath setLineJoinStyle:NSRoundLineJoinStyle];
  57         break;
  58     case wxJOIN_MITER:
  59         [bezpath setLineJoinStyle:NSMiterLineJoinStyle];
  60         break;
  61     }
  62     switch(pen.GetCap())
  63     {
  64     case wxCAP_ROUND:
  65         [bezpath setLineCapStyle:NSRoundLineCapStyle];
  66         break;
  67     case wxCAP_PROJECTING:
  68         [bezpath setLineCapStyle:NSSquareLineCapStyle];
  69         break;
  70     case wxCAP_BUTT:
  71         [bezpath setLineCapStyle:NSButtLineCapStyle];
  72         break;
  73     }
  74 }
  75
  76 void wxCocoaDCImpl::CocoaInitializeTextSystem()
  77 {
  78     wxAutoNSAutoreleasePool pool;
  79
  80     wxASSERT_MSG(!sm_cocoaNSTextStorage && !sm_cocoaNSLayoutManager && !sm_cocoaNSTextContainer,wxT("Text system already initalized!  BAD PROGRAMMER!"));
  81
  82     // FIXME: Never released
  83     sm_cocoaNSTextStorage = wxGCSafeRetain([[[NSTextStorage alloc] init] autorelease]);
  84
  85     // FIXME: Never released
  86     sm_cocoaNSLayoutManager = wxGCSafeRetain([[[NSLayoutManager alloc] init] autorelease]);
  87
  88     [sm_cocoaNSTextStorage addLayoutManager:sm_cocoaNSLayoutManager];
  89     // NSTextStorage retains NSLayoutManager, but so do we
  90     // [sm_cocoaNSLayoutManager release]; [sm_cocoaNSLayoutManager retain];
  91
  92     // NOTE:  initWithContainerSize is the designated initializer, but the
  93     // Apple CircleView sample gets away with just calling init, which
  94     // is all we really need for our purposes.
  95     // FIXME: Never released
  96     sm_cocoaNSTextContainer = wxGCSafeRetain([[[NSTextContainer alloc] init] autorelease]);
  97     [sm_cocoaNSLayoutManager addTextContainer:sm_cocoaNSTextContainer];
  98     // NSLayoutManager retains NSTextContainer, but so do we
  99     // [sm_cocoaNSTextContainer release]; [sm_cocoaNSTextContainer retain];
 100 }
 101
 102 void wxCocoaDCImpl::CocoaShutdownTextSystem()
 103 {
 104     [sm_cocoaNSTextContainer release]; sm_cocoaNSTextContainer = nil;
 105     [sm_cocoaNSLayoutManager release]; sm_cocoaNSLayoutManager = nil;
 106     [sm_cocoaNSTextStorage release]; sm_cocoaNSTextStorage = nil;
 107 }
 108
 109 void wxCocoaDCImpl::CocoaUnwindStackAndLoseFocus()
 110 {
 111     wxCocoaDCStack::compatibility_iterator ourNode=sm_cocoaDCStack.Find(this);
 112     if(ourNode)
 113     {
 114         wxCocoaDCStack::compatibility_iterator node=sm_cocoaDCStack.GetFirst();
 115         for(;node!=ourNode; node=sm_cocoaDCStack.GetFirst())
 116         {
 117             wxCocoaDCImpl *dc = node->GetData();
 118             wxASSERT(dc);
 119             wxASSERT(dc!=this);
 120             if(!dc->CocoaUnlockFocus())
 121             {
 122                 wxFAIL_MSG(wxT("Unable to unlock focus on higher-level DC!"));
 123             }
 124             sm_cocoaDCStack.Erase(node);
 125         }
 126         wxASSERT(node==ourNode);
 127         wxASSERT(ourNode->GetData() == this);
 128         ourNode->GetData()->CocoaUnlockFocus();
 129         sm_cocoaDCStack.Erase(ourNode);
 130     }
 131 }
 132
 133 bool wxCocoaDCImpl::CocoaUnwindStackAndTakeFocus()
 134 {
 135     wxCocoaDCStack::compatibility_iterator node=sm_cocoaDCStack.GetFirst();
 136     for(;node;node = sm_cocoaDCStack.GetFirst())
 137     {
 138         wxCocoaDCImpl *dc = node->GetData();
 139         wxASSERT(dc);
 140         // If we're on the stack, then it's unwound enough and we have focus
 141         if(dc==this)
 142             return true;
 143         // If unable to unlockFocus (e.g. wxPaintDC) stop here
 144         if(!dc->CocoaUnlockFocus())
 145             break;
 146         sm_cocoaDCStack.Erase(node);
 147     }
 148     return CocoaLockFocus();
 149 }
 150
 151 wxCocoaDCImpl::wxCocoaDCImpl(wxDC *owner)
 152 :   wxDCImpl(owner)
 153 {
 154     m_cocoaWxToBoundsTransform = nil;
 155     m_pen = *wxBLACK_PEN;
 156 }
 157
 158 wxCocoaDCImpl::~wxDC(void)
 159 {
 160     [m_cocoaWxToBoundsTransform release];
 161 }
 162
 163 bool wxCocoaDCImpl::CocoaLockFocus()
 164 {
 165     return false;
 166 }
 167
 168 bool wxCocoaDCImpl::CocoaUnlockFocus()
 169 {
 170     return false;
 171 }
 172
 173 /*static*/ WX_NSAffineTransform wxCocoaDCImpl::CocoaGetWxToBoundsTransform(bool isFlipped, float height)
 174 {
 175     NSAffineTransform *transform = nil;
 176     // This transform flips the graphics since wxDC uses top-left origin
 177     if(!isFlipped)
 178     {
 179         // The transform is auto released
 180         transform = [NSAffineTransform transform];
 181         /*  x' = 1x + 0y + 0
 182             y' = 0x + -1y + window's height
 183         */
 184         NSAffineTransformStruct matrix = {
 185             1,  0
 186         ,   0, -1
 187         ,   0, height
 188         };
 189         [transform setTransformStruct: matrix];
 190     }
 191     return transform;
 192 }
 193
 194 void wxCocoaDCImpl::CocoaApplyTransformations()
 195 {
 196     [m_cocoaWxToBoundsTransform concat];
 197     // TODO: Apply device/logical/user position/scaling transformations
 198 }
 199
 200 void wxCocoaDCImpl::CocoaUnapplyTransformations()
 201 {
 202     // NOTE: You *must* call this with focus held.
 203     // Undo all transforms so we're back in true Cocoa coords with
 204     // no scaling or flipping.
 205     NSAffineTransform *invertTransform;
 206     invertTransform = [m_cocoaWxToBoundsTransform copy];
 207     [invertTransform invert];
 208     [invertTransform concat];
 209     [invertTransform release];
 210 }
 211
 212 bool wxCocoaDCImpl::CocoaGetBounds(void *rectData)
 213 {
 214     // We don't know what we are so we can't return anything.
 215     return false;
 216 }
 217
 218 void wxCocoaDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 219 {
 220     wxAutoNSAutoreleasePool pool;
 221     if(!CocoaTakeFocus()) return;
 222     NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(x,y,width,height)];
 223     CocoaSetPenForNSBezierPath(m_pen,bezpath);
 224     [bezpath stroke];
 225     [m_brush.GetNSColor() set];
 226     [bezpath fill];
 227 }
 228
 229 void wxCocoaDCImpl::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 230 {
 231     wxAutoNSAutoreleasePool pool;
 232     if(!CocoaTakeFocus()) return;
 233     NSBezierPath *bezpath = [NSBezierPath bezierPath];
 234     [bezpath moveToPoint:NSMakePoint(x1,y1)];
 235     [bezpath lineToPoint:NSMakePoint(x2,y2)];
 236
 237     CocoaSetPenForNSBezierPath(m_pen,bezpath);
 238     [bezpath stroke];
 239 }
 240
 241 void wxCocoaDCImpl::DoGetTextExtent(const wxString& text, wxCoord *x, wxCoord *y, wxCoord *descent, wxCoord *externalLeading, const wxFont *theFont) const
 242 {
 243     wxAutoNSAutoreleasePool pool;
 244 // FIXME: Cache this so it can be used for DoDrawText
 245     wxASSERT_MSG(sm_cocoaNSTextStorage && sm_cocoaNSLayoutManager && sm_cocoaNSTextContainer, wxT("Text system has not been initialized.  BAD PROGRAMMER!"));
 246     NSAttributedString *attributedString = [[NSAttributedString alloc]
 247             initWithString:wxNSStringWithWxString(text.c_str())];
 248     [sm_cocoaNSTextStorage setAttributedString:attributedString];
 249     [attributedString release];
 250
 251     NSRange glyphRange = [sm_cocoaNSLayoutManager glyphRangeForTextContainer:sm_cocoaNSTextContainer];
 252     NSRect usedRect = [sm_cocoaNSLayoutManager usedRectForTextContainer:sm_cocoaNSTextContainer];
 253     if(x)
 254         *x=(int)usedRect.size.width;
 255     if(y)
 256         *y=(int)usedRect.size.height;
 257     if(descent)
 258         *descent=0;
 259     if(externalLeading)
 260         *externalLeading=0;
 261 }
 262
 263 void wxCocoaDCImpl::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
 264 {
 265     wxAutoNSAutoreleasePool pool;
 266     if(!CocoaTakeFocus()) return;
 267     wxASSERT_MSG(sm_cocoaNSTextStorage && sm_cocoaNSLayoutManager && sm_cocoaNSTextContainer, wxT("Text system has not been initialized.  BAD PROGRAMMER!"));
 268     NSAttributedString *attributedString = [[NSAttributedString alloc]
 269             initWithString:wxNSStringWithWxString(text.c_str())];
 270     [sm_cocoaNSTextStorage setAttributedString:attributedString];
 271     [attributedString release];
 272
 273     // Set the color (and later font) attributes
 274     NSColor *fgColor = m_textForegroundColour.GetNSColor();
 275     NSColor *bgColor = m_textBackgroundColour.GetNSColor();
 276     if(!fgColor)
 277         fgColor = [NSColor clearColor];
 278     if(!bgColor)
 279         bgColor = [NSColor clearColor];
 280     NSDictionary *attrDict = [[NSDictionary alloc] initWithObjectsAndKeys:
 281             fgColor, NSForegroundColorAttributeName,
 282             bgColor, NSBackgroundColorAttributeName,
 283             nil];
 284     [sm_cocoaNSTextStorage addAttributes: attrDict range:NSMakeRange(0,[sm_cocoaNSTextStorage length])];
 285     [attrDict release];
 286
 287     NSRange glyphRange = [sm_cocoaNSLayoutManager glyphRangeForTextContainer:sm_cocoaNSTextContainer];
 288     NSRect usedRect = [sm_cocoaNSLayoutManager usedRectForTextContainer:sm_cocoaNSTextContainer];
 289     // NOTE: We'll crash trying to get the location of glyphAtIndex:0 if
 290     // there is no length or we don't start at zero
 291     if(!glyphRange.length)
 292         return;
 293     wxASSERT_MSG(glyphRange.location==0,wxT("glyphRange must begin at zero"));
 294
 295     NSAffineTransform *transform = [NSAffineTransform transform];
 296     [transform translateXBy:x yBy:y];
 297
 298     NSAffineTransform *flipTransform = [NSAffineTransform transform];
 299     /*  x' = 1x + 0y + 0
 300         y' = 0x + -1y + window's height
 301     */
 302     NSAffineTransformStruct matrix = {
 303         1,  0
 304     ,   0, -1
 305     ,   0, usedRect.size.height
 306     };
 307     [flipTransform setTransformStruct: matrix];
 308
 309     NSGraphicsContext *context = [NSGraphicsContext currentContext];
 310     [context saveGraphicsState];
 311     [transform concat];
 312     [flipTransform concat];
 313     #if 0
 314     // Draw+fill a rectangle so we can see where the shit is supposed to be.
 315     wxLogTrace(wxTRACE_COCOA,wxT("(%f,%f) (%fx%f)"),usedRect.origin.x,usedRect.origin.y,usedRect.size.width,usedRect.size.height);
 316     NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(0,0,usedRect.size.width,usedRect.size.height)];
 317     [[NSColor blackColor] set];
 318     [bezpath stroke];
 319     [[NSColor blueColor] set];
 320     [bezpath fill];
 321     #endif
 322
 323     NSPoint layoutLocation = [sm_cocoaNSLayoutManager locationForGlyphAtIndex:0];
 324     layoutLocation.x = 0.0;
 325     layoutLocation.y *= -1.0;
 326
 327     // Save the location as is for underlining
 328     NSPoint underlineLocation = layoutLocation;
 329
 330     // Offset the location by the baseline for drawing the glyphs.
 331     layoutLocation.y += [[sm_cocoaNSLayoutManager typesetter] baselineOffsetInLayoutManager:sm_cocoaNSLayoutManager glyphIndex:0];
 332
 333     if(m_backgroundMode==wxSOLID)
 334         [sm_cocoaNSLayoutManager drawBackgroundForGlyphRange:glyphRange  atPoint:NSZeroPoint];
 335     [sm_cocoaNSLayoutManager drawGlyphsForGlyphRange:glyphRange  atPoint:layoutLocation];
 336
 337     int underlineStyle = GetFont().GetUnderlined() ? NSUnderlineStyleSingle : NSUnderlineStyleNone;
 338     NSRange lineGlyphRange;
 339     NSRect lineRect = [sm_cocoaNSLayoutManager lineFragmentRectForGlyphAtIndex:0 effectiveRange:&lineGlyphRange];
 340
 341     [sm_cocoaNSLayoutManager underlineGlyphRange:glyphRange underlineType:underlineStyle
 342         lineFragmentRect:lineRect lineFragmentGlyphRange:lineGlyphRange
 343         containerOrigin:underlineLocation];
 344
 345     [context restoreGraphicsState];
 346 }
 347
 348 ///////////////////////////////////////////////////////////////////////////
 349 // cut here, the rest is stubs
 350 ///////////////////////////////////////////////////////////////////////////
 351
 352 //-----------------------------------------------------------------------------
 353 // wxDC
 354 //-----------------------------------------------------------------------------
 355
 356 void wxCocoaDCImpl::DoDrawIcon( const wxIcon &WXUNUSED(icon), int WXUNUSED(x), int WXUNUSED(y) )
 357 {
 358 };
 359
 360 void wxCocoaDCImpl::DoDrawPoint( int x, int y )
 361 {
 362 };
 363
 364 void wxCocoaDCImpl::DoDrawPolygon( int, const wxPoint *, int, int, wxPolygonFillMode)
 365 {
 366 };
 367
 368 void wxCocoaDCImpl::DoDrawLines( int, const wxPoint *, int, int )
 369 {
 370 }
 371
 372 int wxCocoaDCImpl::GetDepth() const
 373 {
 374     return 0;
 375 }
 376
 377 wxSize wxCocoaDCImpl::GetPPI() const
 378 {
 379     return wxSize(0,0);
 380 }
 381
 382 bool wxCocoaDCImpl::CanGetTextExtent() const
 383 {
 384     return false;
 385 }
 386
 387 wxCoord wxCocoaDCImpl::GetCharHeight() const
 388 {
 389     return 0;
 390 }
 391
 392 wxCoord wxCocoaDCImpl::GetCharWidth() const
 393 {
 394     return 0;
 395 }
 396
 397 bool wxCocoaDCImpl::CanDrawBitmap() const
 398 {
 399     return true;
 400 }
 401
 402 bool wxCocoaDCImpl::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
 403 {
 404     return false;
 405 }
 406
 407 void wxCocoaDCImpl::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc)
 408 {
 409 }
 410
 411 void wxCocoaDCImpl::SetFont(const wxFont& font)
 412 {
 413     m_font = font;
 414 }
 415
 416 void wxCocoaDCImpl::SetPen(const wxPen& pen)
 417 {
 418     m_pen = pen;
 419 }
 420
 421 void wxCocoaDCImpl::SetBrush(const wxBrush& brush)
 422 {
 423     m_brush = brush;
 424 }
 425
 426 void wxCocoaDCImpl::DoSetClippingRegionAsRegion(const wxRegion& region)
 427 {
 428 }
 429
 430 void wxCocoaDCImpl::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 431 {
 432 }
 433
 434 void wxCocoaDCImpl::DestroyClippingRegion()
 435 {
 436 }
 437
 438 void wxCocoaDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
 439 {
 440 }
 441
 442 void wxCocoaDCImpl::DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
 443 {
 444 }
 445
 446 void wxCocoaDCImpl::DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, double sa, double ea)
 447 {
 448 }
 449
 450 void wxCocoaDCImpl::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 451 {
 452 }
 453
 454 void wxCocoaDCImpl::DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask)
 455 {
 456     wxAutoNSAutoreleasePool pool;
 457     if(!CocoaTakeFocus()) return;
 458     if(!bmp.IsOk())
 459         return;
 460
 461 #if 0
 462     // Draw a rect so we can see where it's supposed to be
 463     wxLogTrace(wxTRACE_COCOA,wxT("image at (%d,%d) size %dx%d"),x,y,bmp.GetWidth(),bmp.GetHeight());
 464     NSBezierPath *bezpath = [NSBezierPath bezierPathWithRect:NSMakeRect(x,y,bmp.GetWidth(),bmp.GetHeight())];
 465     [[NSColor blackColor] set];
 466     [bezpath stroke];
 467     [[NSColor blueColor] set];
 468     [bezpath fill];
 469 #endif // 0
 470
 471     NSAffineTransform *transform = [NSAffineTransform transform];
 472     [transform translateXBy:x yBy:y];
 473
 474     NSAffineTransform *flipTransform = [NSAffineTransform transform];
 475     /*  x' = 1x + 0y + 0
 476         y' = 0x + -1y + window's height
 477     */
 478     NSAffineTransformStruct matrix = {
 479         1,  0
 480     ,   0, -1
 481     ,   0, bmp.GetHeight()
 482     };
 483     [flipTransform setTransformStruct: matrix];
 484
 485     NSGraphicsContext *context = [NSGraphicsContext currentContext];
 486     [context saveGraphicsState];
 487     [transform concat];
 488     [flipTransform concat];
 489
 490     NSImage *nsimage = [bmp.GetNSImage(useMask) retain];
 491
 492     [nsimage drawAtPoint: NSMakePoint(0,0)
 493         fromRect: NSMakeRect(0.0,0.0,bmp.GetWidth(),bmp.GetHeight())
 494         operation: NSCompositeSourceOver
 495         fraction: 1.0];
 496
 497     [nsimage release];
 498     [context restoreGraphicsState];
 499 }
 500
 501 bool wxCocoaDCImpl::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, wxFloodFillStyle style)
 502 {
 503     return false;
 504 }
 505
 506 void wxCocoaDCImpl::DoCrossHair(wxCoord x, wxCoord y)
 507 {
 508 }
 509
 510
 511 bool wxCocoaDCImpl::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, wxDC *source, wxCoord xsrc, wxCoord ysrc, wxRasterOperationMode rop, bool useMask , wxCoord xsrcMask, wxCoord ysrcMask)
 512 {
 513     if(!CocoaTakeFocus()) return false;
 514     if(!source) return false;
 515     wxCocoaDCImpl *sourceImpl = static_cast<wxCocoaDCImpl*>(source->GetImpl());
 516     return sourceImpl->CocoaDoBlitOnFocusedDC(xdest,ydest,width,height,
 517         xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
 518 }
 519
 520 bool wxCocoaDCImpl::CocoaDoBlitOnFocusedDC(wxCoord xdest, wxCoord ydest,
 521     wxCoord width, wxCoord height, wxCoord xsrc, wxCoord ysrc,
 522     int logicalFunc, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask)
 523 {
 524     return false;
 525 }
 526
 527 void wxCocoaDCImpl::DoGetSize( int* width, int* height ) const
 528 {
 529   *width = m_maxX-m_minX;
 530   *height = m_maxY-m_minY;
 531 };
 532
 533 void wxCocoaDCImpl::DoGetSizeMM( int* width, int* height ) const
 534 {
 535   int w = 0;
 536   int h = 0;
 537   DoGetSize( &w, &h );
 538 };
 539
 540 void wxCocoaDCImpl::SetTextForeground( const wxColour &col )
 541 {
 542 //  if (!IsOk()) return;
 543   m_textForegroundColour = col;
 544 };
 545
 546 void wxCocoaDCImpl::SetTextBackground( const wxColour &col )
 547 {
 548 //  if (!IsOk()) return;
 549   m_textBackgroundColour = col;
 550 };
 551
 552 void wxCocoaDCImpl::Clear()
 553 {
 554     if(!CocoaTakeFocus()) return;
 555
 556     NSRect boundsRect;
 557     if(!CocoaGetBounds(&boundsRect)) return;
 558
 559     NSGraphicsContext *context = [NSGraphicsContext currentContext];
 560     [context saveGraphicsState];
 561
 562     // Undo all transforms so when we draw our bounds rect we
 563     // really overwrite our bounds rect.
 564     CocoaUnapplyTransformations();
 565
 566     [m_backgroundBrush.GetNSColor() set];
 567     [NSBezierPath fillRect:boundsRect];
 568
 569     [context restoreGraphicsState];
 570 }
 571
 572 void wxCocoaDCImpl::SetBackground(const wxBrush& brush)
 573 {
 574     m_backgroundBrush = brush;
 575 }
 576
 577 void wxCocoaDCImpl::SetPalette(const wxPalette&)
 578 {
 579 }
 580
 581 void wxCocoaDCImpl::SetLogicalFunction(wxRasterOperationMode)
 582 {
 583 }
 584
 585
 586 void wxCocoaDCImpl::SetMapMode( wxMappingMode mode )
 587 {
 588   switch (mode)
 589   {
 590     case wxMM_TWIPS:
 591       break;
 592     case wxMM_POINTS:
 593       break;
 594     case wxMM_METRIC:
 595       break;
 596     case wxMM_LOMETRIC:
 597       break;
 598     default:
 599     case wxMM_TEXT:
 600       SetLogicalScale( 1.0, 1.0 );
 601       break;
 602   };
 603   if (mode != wxMM_TEXT)
 604   {
 605   };
 606 };
 607
 608 void wxCocoaDCImpl::SetUserScale( double x, double y )
 609 {
 610   // allow negative ? -> no
 611   m_userScaleX = x;
 612   m_userScaleY = y;
 613   ComputeScaleAndOrigin();
 614 };
 615
 616 void wxCocoaDCImpl::SetLogicalScale( double x, double y )
 617 {
 618   // allow negative ?
 619   m_logicalScaleX = x;
 620   m_logicalScaleY = y;
 621   ComputeScaleAndOrigin();
 622 };
 623
 624 void wxCocoaDCImpl::SetLogicalOrigin( wxCoord x, wxCoord y )
 625 {
 626   m_logicalOriginX = x * m_signX;   // is this still correct ?
 627   m_logicalOriginY = y * m_signY;
 628   ComputeScaleAndOrigin();
 629 };
 630
 631 void wxCocoaDCImpl::SetDeviceOrigin( wxCoord x, wxCoord y )
 632 {
 633   ComputeScaleAndOrigin();
 634 };
 635
 636 void wxCocoaDCImpl::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
 637 {
 638   m_signX = (xLeftRight ?  1 : -1);
 639   m_signY = (yBottomUp  ? -1 :  1);
 640   ComputeScaleAndOrigin();
 641 };
 642
 643 void wxCocoaDCImpl::ComputeScaleAndOrigin(void)
 644 {
 645   // CMB: copy scale to see if it changes
 646   double origScaleX = m_scaleX;
 647   double origScaleY = m_scaleY;
 648
 649   m_scaleX = m_logicalScaleX * m_userScaleX;
 650   m_scaleY = m_logicalScaleY * m_userScaleY;
 651
 652   // CMB: if scale has changed call SetPen to recalculate the line width
 653   if (m_scaleX != origScaleX || m_scaleY != origScaleY)
 654   {
 655 #if 0
 656     // this is a bit artificial, but we need to force wxDC to think
 657     // the pen has changed
 658     const wxPen* pen = & GetPen();
 659     wxPen tempPen;
 660     m_pen = tempPen;
 661     SetPen(* pen);
 662 #endif
 663   }
 664 };