src/osx/carbon/utilscocoa.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/utils.mm
   3 // Purpose:     various cocoa mixin utility functions
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id: utilscocoa.mm 48805 2007-09-19 14:52:25Z SC $
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxOSX_USE_COCOA_OR_CARBON
  15 #include <Cocoa/Cocoa.h>
  16 #else
  17 #import <UIKit/UIKit.h>
  18 #endif
  19
  20 #ifdef __WXMAC__
  21 #include "wx/osx/private.h"
  22 #endif
  23
  24 #include "wx/fontutil.h"
  25
  26 #ifdef __WXMAC__
  27
  28 #if wxOSX_USE_CARBON
  29 bool wxMacInitCocoa()
  30 {
  31     bool cocoaLoaded = NSApplicationLoad();
  32     wxASSERT_MSG(cocoaLoaded,wxT("Couldn't load Cocoa in Carbon Environment")) ;
  33     return cocoaLoaded;
  34 }
  35 #endif
  36
  37 wxMacAutoreleasePool::wxMacAutoreleasePool()
  38 {
  39     m_pool = [[NSAutoreleasePool alloc] init];
  40 }
  41
  42 wxMacAutoreleasePool::~wxMacAutoreleasePool()
  43 {
  44     [(NSAutoreleasePool*)m_pool release];
  45 }
  46
  47 #endif
  48
  49 #if wxOSX_USE_COCOA
  50
  51 CGContextRef wxOSXGetContextFromCurrentContext()
  52 {
  53     CGContextRef context = (CGContextRef)[[NSGraphicsContext currentContext]
  54                                           graphicsPort];
  55     return context;
  56 }
  57
  58 bool wxOSXLockFocus( WXWidget view)
  59 {
  60     return [view lockFocusIfCanDraw];
  61 }
  62
  63 void wxOSXUnlockFocus( WXWidget view)
  64 {
  65     [view unlockFocus];
  66 }
  67
  68 #endif
  69
  70 #if wxOSX_USE_IPHONE
  71
  72 CGContextRef wxOSXGetContextFromCurrentContext()
  73 {
  74     CGContextRef context = UIGraphicsGetCurrentContext();
  75     return context;
  76 }
  77
  78 #endif
  79
  80 // ----------------------------------------------------------------------------
  81 // NSObject Utils
  82 // ----------------------------------------------------------------------------
  83
  84 void wxMacCocoaRelease( void* obj )
  85 {
  86     [(NSObject*)obj release];
  87 }
  88
  89 void wxMacCocoaAutorelease( void* obj )
  90 {
  91     [(NSObject*)obj autorelease];
  92 }
  93
  94 void* wxMacCocoaRetain( void* obj )
  95 {
  96     [(NSObject*)obj retain];
  97     return obj;
  98 }
  99
 100 // ----------------------------------------------------------------------------
 101 // NSFont Utils
 102 // ----------------------------------------------------------------------------
 103
 104 #if wxOSX_USE_COCOA
 105
 106 WX_NSFont wxFont::OSXCreateNSFont(wxOSXSystemFont font, wxNativeFontInfo* info)
 107 {
 108     NSFont* nsfont = nil;
 109     switch( font )
 110     {
 111         case wxOSX_SYSTEM_FONT_NORMAL:
 112             nsfont = [NSFont systemFontOfSize:[NSFont systemFontSize]];
 113             break;
 114         case wxOSX_SYSTEM_FONT_BOLD:
 115             nsfont = [NSFont boldSystemFontOfSize:[NSFont systemFontSize]];
 116             break;
 117         case wxOSX_SYSTEM_FONT_SMALL:
 118             nsfont = [NSFont systemFontOfSize:[NSFont smallSystemFontSize]];
 119             break;
 120         case wxOSX_SYSTEM_FONT_SMALL_BOLD:
 121             nsfont = [NSFont boldSystemFontOfSize:[NSFont smallSystemFontSize]];
 122             break;
 123         case wxOSX_SYSTEM_FONT_MINI:
 124             nsfont = [NSFont systemFontOfSize:
 125                 [NSFont systemFontSizeForControlSize:NSMiniControlSize]];
 126             break;
 127        case wxOSX_SYSTEM_FONT_MINI_BOLD:
 128             nsfont = [NSFont boldSystemFontOfSize:
 129                 [NSFont systemFontSizeForControlSize:NSMiniControlSize]];
 130             break;
 131         case wxOSX_SYSTEM_FONT_LABELS:
 132             nsfont = [NSFont labelFontOfSize:[NSFont labelFontSize]];
 133             break;
 134        case wxOSX_SYSTEM_FONT_VIEWS:
 135             nsfont = [NSFont controlContentFontOfSize:0];
 136             break;
 137         default:
 138             break;
 139     }
 140     [nsfont retain];
 141     NSFontDescriptor*desc = [[nsfont fontDescriptor] retain];
 142     if ( info->m_faceName.empty())
 143     {
 144         wxFontStyle fontstyle = wxFONTSTYLE_NORMAL;
 145         wxFontWeight fontweight = wxFONTWEIGHT_NORMAL;
 146         bool underlined = false;
 147
 148         int size = (int) ([desc pointSize]+0.5);
 149         NSFontSymbolicTraits traits = [desc symbolicTraits];
 150
 151         if ( traits & NSFontBoldTrait )
 152             fontweight = wxFONTWEIGHT_BOLD ;
 153         else
 154             fontweight = wxFONTWEIGHT_NORMAL ;
 155         if ( traits & NSFontItalicTrait )
 156             fontstyle = wxFONTSTYLE_ITALIC ;
 157
 158         wxCFStringRef fontname( [desc postscriptName] );
 159         info->Init(size,wxFONTFAMILY_DEFAULT,fontstyle,fontweight,underlined,
 160             fontname.AsString(), wxFONTENCODING_DEFAULT);
 161
 162     }
 163     info->m_nsFontDescriptor = desc;
 164     return nsfont;
 165 }
 166
 167 void wxNativeFontInfo::OSXValidateNSFontDescriptor()
 168 {
 169     NSFontDescriptor* desc  = [NSFontDescriptor fontDescriptorWithName:wxCFStringRef(m_faceName).AsNSString() size:m_pointSize];
 170     NSFontSymbolicTraits traits = 0;
 171
 172     if (m_weight == wxFONTWEIGHT_BOLD)
 173         traits |= NSFontBoldTrait;
 174     if (m_style == wxFONTSTYLE_ITALIC || m_style == wxFONTSTYLE_SLANT)
 175         traits |= NSFontItalicTrait;
 176
 177     if ( traits != 0 )
 178     {
 179         desc = [desc fontDescriptorWithSymbolicTraits:traits];
 180     }
 181     wxMacCocoaRetain(desc);
 182     m_nsFontDescriptor = desc;
 183 }
 184
 185 WX_NSFont wxFont::OSXCreateNSFont(const wxNativeFontInfo* info)
 186 {
 187     NSFont* nsFont;
 188     nsFont = [NSFont fontWithDescriptor:info->m_nsFontDescriptor size:info->m_pointSize];
 189     wxMacCocoaRetain(nsFont);
 190     return nsFont;
 191 }
 192
 193 #endif
 194
 195 #if wxOSX_USE_IPHONE
 196
 197 WX_UIFont wxFont::OSXCreateUIFont(wxOSXSystemFont font, wxNativeFontInfo* info)
 198 {
 199     UIFont* uifont;
 200     switch( font )
 201     {
 202         case wxOSX_SYSTEM_FONT_NORMAL:
 203             uifont = [UIFont systemFontOfSize:[UIFont systemFontSize]];
 204             break;
 205         case wxOSX_SYSTEM_FONT_BOLD:
 206             uifont = [UIFont boldSystemFontOfSize:[UIFont systemFontSize]];
 207             break;
 208         case wxOSX_SYSTEM_FONT_MINI:
 209         case wxOSX_SYSTEM_FONT_SMALL:
 210             uifont = [UIFont systemFontOfSize:[UIFont smallSystemFontSize]];
 211             break;
 212         case wxOSX_SYSTEM_FONT_MINI_BOLD:
 213         case wxOSX_SYSTEM_FONT_SMALL_BOLD:
 214             uifont = [UIFont boldSystemFontOfSize:[UIFont smallSystemFontSize]];
 215             break;
 216         case wxOSX_SYSTEM_FONT_VIEWS:
 217         case wxOSX_SYSTEM_FONT_LABELS:
 218             uifont = [UIFont systemFontOfSize:[UIFont labelFontSize]];
 219             break;
 220         default:
 221             break;
 222     }
 223     [uifont retain];
 224     if ( info->m_faceName.empty())
 225     {
 226         wxFontStyle fontstyle = wxFONTSTYLE_NORMAL;
 227         wxFontWeight fontweight = wxFONTWEIGHT_NORMAL;
 228         bool underlined = false;
 229
 230         int size = (int) ([uifont pointSize]+0.5);
 231         /*
 232         NSFontSymbolicTraits traits = [desc symbolicTraits];
 233
 234         if ( traits & NSFontBoldTrait )
 235             fontweight = wxFONTWEIGHT_BOLD ;
 236         else
 237             fontweight = wxFONTWEIGHT_NORMAL ;
 238         if ( traits & NSFontItalicTrait )
 239             fontstyle = wxFONTSTYLE_ITALIC ;
 240         */
 241         wxCFStringRef fontname( [uifont familyName] );
 242         info->Init(size,wxFONTFAMILY_DEFAULT,fontstyle,fontweight,underlined,
 243             fontname.AsString(), wxFONTENCODING_DEFAULT);
 244
 245     }
 246     return uifont;
 247 }
 248
 249 WX_UIFont wxFont::OSXCreateUIFont(const wxNativeFontInfo* info)
 250 {
 251     UIFont* uiFont;
 252     uiFont = [UIFont fontWithName:wxCFStringRef(info->m_faceName).AsNSString() size:info->m_pointSize];
 253     wxMacCocoaRetain(uiFont);
 254     return uiFont;
 255 }
 256
 257 #endif
 258 // ----------------------------------------------------------------------------
 259 // NSImage Utils
 260 // ----------------------------------------------------------------------------
 261
 262 #if wxOSX_USE_COCOA
 263
 264 //  From "Cocoa Drawing Guide:Working with Images"
 265 WX_NSImage  wxOSXCreateNSImageFromCGImage( CGImageRef image )
 266 {
 267     NSRect      imageRect    = NSMakeRect(0.0, 0.0, 0.0, 0.0);
 268
 269     // Get the image dimensions.
 270     imageRect.size.height = CGImageGetHeight(image);
 271     imageRect.size.width = CGImageGetWidth(image);
 272
 273     // Create a new image to receive the Quartz image data.
 274     NSImage  *newImage = [[NSImage alloc] initWithSize:imageRect.size];
 275     [newImage lockFocus];
 276
 277     // Get the Quartz context and draw.
 278     CGContextRef  imageContext = (CGContextRef) [[NSGraphicsContext currentContext] graphicsPort];
 279     CGContextDrawImage( imageContext, *(CGRect*)&imageRect, image );
 280     [newImage unlockFocus];
 281
 282     /*
 283         // Create a bitmap rep from the image...
 284         NSBitmapImageRep *bitmapRep = [[NSBitmapImageRep alloc] initWithCGImage:cgImage];
 285         // Create an NSImage and add the bitmap rep to it...
 286         NSImage *image = [[NSImage alloc] init];
 287         [image addRepresentation:bitmapRep];
 288         [bitmapRep release];
 289     */
 290     [newImage autorelease];
 291     return( newImage );
 292 }
 293
 294 // ----------------------------------------------------------------------------
 295 // NSCursor Utils
 296 // ----------------------------------------------------------------------------
 297
 298 // copied from cursor.mm
 299
 300 static NSCursor* wxGetStockCursor( short sIndex )
 301 {
 302     ClassicCursor* pCursor = &gMacCursors[sIndex];
 303
 304     //Classic mac cursors are 1bps 16x16 black and white with a
 305     //identical mask that is 1 for on and 0 for off
 306     NSImage *theImage = [[NSImage alloc] initWithSize:NSMakeSize(16.0,16.0)];
 307
 308     //NSCursor takes an NSImage takes a number of Representations - here
 309     //we need only one for the raw data
 310     NSBitmapImageRep *theRep = [[NSBitmapImageRep alloc]
 311         initWithBitmapDataPlanes: NULL  // Tell Cocoa to allocate the planes for us.
 312         pixelsWide: 16      // All classic cursors are 16x16
 313         pixelsHigh: 16
 314         bitsPerSample: 1    // All classic cursors are bitmaps with bitmasks
 315         samplesPerPixel: 2  // Sample 0:image 1:mask
 316         hasAlpha: YES       // Identify last sample as a mask
 317         isPlanar: YES       // Use a separate array for each sample
 318         colorSpaceName: NSCalibratedWhiteColorSpace // 0.0=black 1.0=white
 319         bytesPerRow: 2      // Rows in each plane are on 2-byte boundaries (no pad)
 320         bitsPerPixel: 1];   // same as bitsPerSample since data is planar
 321
 322     // Ensure that Cocoa allocated 2 and only 2 of the 5 possible planes
 323     unsigned char *planes[5];
 324     [theRep getBitmapDataPlanes:planes];
 325     wxASSERT(planes[0] != NULL);
 326     wxASSERT(planes[1] != NULL);
 327     wxASSERT(planes[2] == NULL);
 328     wxASSERT(planes[3] == NULL);
 329     wxASSERT(planes[4] == NULL);
 330
 331     // NOTE1: The Cursor's bits field is white=0 black=1.. thus the bitwise-not
 332     // Why not use NSCalibratedBlackColorSpace?  Because that reverses the
 333     // sense of the alpha (mask) plane.
 334     // NOTE2: The mask data is 0=off 1=on
 335     // NOTE3: Cocoa asks for "premultiplied" color planes.  Since we have a
 336     // 1-bit color plane and a 1-bit alpha plane we can just do a bitwise-and
 337     // on the two.  The original cursor bitmaps have 0 (white actually) for
 338     // any masked-off pixels.  Therefore every masked-off pixel would be wrong
 339     // since we bit-flip all of the picture bits.  In practice, Cocoa doesn't
 340     // seem to care, but we are following the documentation.
 341
 342     // Fill in the color (black/white) plane
 343     for(int i=0; i<16; ++i)
 344     {
 345         planes[0][2*i  ] = (~pCursor->bits[i] & pCursor->mask[i]) >> 8 & 0xff;
 346         planes[0][2*i+1] = (~pCursor->bits[i] & pCursor->mask[i]) & 0xff;
 347     }
 348     // Fill in the alpha (i.e. mask) plane
 349     for(int i=0; i<16; ++i)
 350     {
 351         planes[1][2*i  ] = pCursor->mask[i] >> 8 & 0xff;
 352         planes[1][2*i+1] = pCursor->mask[i] & 0xff;
 353     }
 354
 355     //add the representation (data) to the image
 356     [theImage addRepresentation:theRep];
 357
 358     //create the new cursor
 359     NSCursor* theCursor =  [[NSCursor alloc]  initWithImage:theImage
 360                                     hotSpot:NSMakePoint(pCursor->hotspot[1], pCursor->hotspot[0])
 361                             ];
 362
 363     //do the usual cleanups
 364     [theRep release];
 365     [theImage release];
 366
 367     //return the new cursor
 368     return theCursor;
 369 }
 370
 371 WX_NSCursor wxMacCocoaCreateStockCursor( int cursor_type )
 372 {
 373     WX_NSCursor cursor = nil;
 374     switch (cursor_type)
 375     {
 376     case wxCURSOR_COPY_ARROW:
 377         cursor = [[NSCursor arrowCursor] retain];
 378         break;
 379
 380     case wxCURSOR_WATCH:
 381     case wxCURSOR_WAIT:
 382         // should be displayed by the system when things are running
 383         cursor = [[NSCursor arrowCursor] retain];
 384         break;
 385
 386     case wxCURSOR_IBEAM:
 387         cursor = [[NSCursor IBeamCursor] retain];
 388         break;
 389
 390     case wxCURSOR_CROSS:
 391         cursor = [[NSCursor crosshairCursor] retain];
 392         break;
 393
 394     case wxCURSOR_SIZENWSE:
 395         cursor = wxGetStockCursor(kwxCursorSizeNWSE);
 396         break;
 397
 398     case wxCURSOR_SIZENESW:
 399         cursor = wxGetStockCursor(kwxCursorSizeNESW);
 400         break;
 401
 402     case wxCURSOR_SIZEWE:
 403         cursor = [[NSCursor resizeLeftRightCursor] retain];
 404         break;
 405
 406     case wxCURSOR_SIZENS:
 407         cursor = [[NSCursor resizeUpDownCursor] retain];
 408         break;
 409
 410     case wxCURSOR_SIZING:
 411         cursor = wxGetStockCursor(kwxCursorSize);
 412         break;
 413
 414     case wxCURSOR_HAND:
 415         cursor = [[NSCursor pointingHandCursor] retain];
 416         break;
 417
 418     case wxCURSOR_BULLSEYE:
 419         cursor = wxGetStockCursor(kwxCursorBullseye);
 420         break;
 421
 422     case wxCURSOR_PENCIL:
 423         cursor = wxGetStockCursor(kwxCursorPencil);
 424         break;
 425
 426     case wxCURSOR_MAGNIFIER:
 427         cursor = wxGetStockCursor(kwxCursorMagnifier);
 428         break;
 429
 430     case wxCURSOR_NO_ENTRY:
 431         cursor = wxGetStockCursor(kwxCursorNoEntry);
 432         break;
 433
 434     case wxCURSOR_PAINT_BRUSH:
 435         cursor = wxGetStockCursor(kwxCursorPaintBrush);
 436         break;
 437
 438     case wxCURSOR_POINT_LEFT:
 439         cursor = wxGetStockCursor(kwxCursorPointLeft);
 440         break;
 441
 442     case wxCURSOR_POINT_RIGHT:
 443         cursor = wxGetStockCursor(kwxCursorPointRight);
 444         break;
 445
 446     case wxCURSOR_QUESTION_ARROW:
 447         cursor = wxGetStockCursor(kwxCursorQuestionArrow);
 448         break;
 449
 450     case wxCURSOR_BLANK:
 451         cursor = wxGetStockCursor(kwxCursorBlank);
 452         break;
 453
 454     case wxCURSOR_RIGHT_ARROW:
 455         cursor = wxGetStockCursor(kwxCursorRightArrow);
 456         break;
 457
 458     case wxCURSOR_SPRAYCAN:
 459         cursor = wxGetStockCursor(kwxCursorRoller);
 460         break;
 461
 462     case wxCURSOR_OPEN_HAND:
 463         cursor = [[NSCursor openHandCursor] retain];
 464         break;
 465
 466     case wxCURSOR_CLOSED_HAND:
 467         cursor = [[NSCursor closedHandCursor] retain];
 468         break;
 469
 470     case wxCURSOR_CHAR:
 471     case wxCURSOR_ARROW:
 472     case wxCURSOR_LEFT_BUTTON:
 473     case wxCURSOR_RIGHT_BUTTON:
 474     case wxCURSOR_MIDDLE_BUTTON:
 475     default:
 476         cursor = [[NSCursor arrowCursor] retain];
 477         break;
 478     }
 479     return cursor;
 480 }
 481
 482 //  C-based style wrapper routines around NSCursor
 483 WX_NSCursor  wxMacCocoaCreateCursorFromCGImage( CGImageRef cgImageRef, float hotSpotX, float hotSpotY )
 484 {
 485     static BOOL    firstTime  = YES;
 486
 487     if ( firstTime )
 488     {
 489         //  Must first call [[[NSWindow alloc] init] release] to get the NSWindow machinery set up so that NSCursor can use a window to cache the cursor image
 490         [[[NSWindow alloc] init] release];
 491         firstTime = NO;
 492     }
 493
 494     NSImage    *nsImage  = wxOSXCreateNSImageFromCGImage( cgImageRef );
 495     NSCursor  *cursor    = [[NSCursor alloc] initWithImage:nsImage hotSpot:NSMakePoint( hotSpotX, hotSpotY )];
 496
 497     [nsImage release];
 498
 499     return cursor;
 500 }
 501
 502 void  wxMacCocoaSetCursor( WX_NSCursor cursor )
 503 {
 504     [cursor set];
 505 }
 506
 507 void  wxMacCocoaHideCursor()
 508 {
 509     [NSCursor hide];
 510 }
 511
 512 void  wxMacCocoaShowCursor()
 513 {
 514     [NSCursor unhide];
 515 }
 516
 517 #endif
 518