crush compiler warnings and handle out of memory errors slightly better

[wxWidgets.git] / src / cocoa / cursor.mm

/////////////////////////////////////////////////////////////////////////////
// Name:        cursor.mm
// Purpose:     wxCursor class for wxCocoa
// Author:      Ryan Norton
// Modified by:
// Created:     2004-10-05
// RCS-ID:      $Id$
// Copyright:   (c) Ryan Norton
// Licence:   	wxWidgets licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "cursor.h"
#endif

#include "wx/wxprec.h"
#ifndef WX_PRECOMP
    #include "wx/icon.h"
    #include "wx/cursor.h"
#endif //WX_PRECOMP

#import <AppKit/NSCursor.h>
#import <AppKit/NSImage.h>
#include <wx/cocoa/string.h>

#if !USE_SHARED_LIBRARIES
IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxBitmap)
#endif

typedef struct tagClassicCursor
{
    wxUint16 bits[16];
    wxUint16 mask[16];
    wxInt16 hotspot[2];
}ClassicCursor;

const short kwxCursorBullseye = 0 ;
const short kwxCursorBlank = 1 ;
const short kwxCursorPencil = 2 ;
const short kwxCursorMagnifier = 3 ;
const short kwxCursorNoEntry = 4 ;
const short kwxCursorPaintBrush = 5 ;
const short kwxCursorPointRight = 6 ;
const short kwxCursorPointLeft = 7 ;
const short kwxCursorQuestionArrow = 8 ;
const short kwxCursorRightArrow = 9 ;
const short kwxCursorSizeNS = 10 ;
const short kwxCursorSize = 11 ;
const short kwxCursorSizeNESW = 12 ;
const short kwxCursorSizeNWSE = 13 ;
const short kwxCursorRoller = 14 ;
const short kwxCursorLast = kwxCursorRoller ;

ClassicCursor gMacCursors[kwxCursorLast+1] =
{

{
{0x0000, 0x03E0, 0x0630, 0x0808, 0x1004, 0x31C6, 0x2362, 0x2222,
0x2362, 0x31C6, 0x1004, 0x0808, 0x0630, 0x03E0, 0x0000, 0x0000},
{0x0000, 0x03E0, 0x07F0, 0x0FF8, 0x1FFC, 0x3FFE, 0x3FFE, 0x3FFE,
0x3FFE, 0x3FFE, 0x1FFC, 0x0FF8, 0x07F0, 0x03E0, 0x0000, 0x0000},
{0x0007, 0x0008}
},

{
{0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000},
{0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000},
{0x0000, 0x0000}
},

{
{0x00F0, 0x0088, 0x0108, 0x0190, 0x0270, 0x0220, 0x0440, 0x0440,
0x0880, 0x0880, 0x1100, 0x1E00, 0x1C00, 0x1800, 0x1000, 0x0000},
{0x00F0, 0x00F8, 0x01F8, 0x01F0, 0x03F0, 0x03E0, 0x07C0, 0x07C0,
0x0F80, 0x0F80, 0x1F00, 0x1E00, 0x1C00, 0x1800, 0x1000, 0x0000},
{0x000E, 0x0003}
},

{
{0x0000, 0x1E00, 0x2100, 0x4080, 0x4080, 0x4080, 0x4080, 0x2180,
0x1FC0, 0x00E0, 0x0070, 0x0038, 0x001C, 0x000E, 0x0006, 0x0000},
{0x3F00, 0x7F80, 0xFFC0, 0xFFC0, 0xFFC0, 0xFFC0, 0xFFC0, 0x7FC0,
0x3FE0, 0x1FF0, 0x00F8, 0x007C, 0x003E, 0x001F, 0x000F, 0x0007},
{0x0004, 0x0004}
},

{
{0x0000, 0x07E0, 0x1FF0, 0x3838, 0x3C0C, 0x6E0E, 0x6706, 0x6386,
0x61C6, 0x60E6, 0x7076, 0x303C, 0x1C1C, 0x0FF8, 0x07E0, 0x0000},
{0x0540, 0x0FF0, 0x3FF8, 0x3C3C, 0x7E0E, 0xFF0F, 0x6F86, 0xE7C7,
0x63E6, 0xE1F7, 0x70FE, 0x707E, 0x3C3C, 0x1FFC, 0x0FF0, 0x0540},
{0x0007, 0x0007}
},

{
{0x0000, 0x0380, 0x0380, 0x0380, 0x0380, 0x0380, 0x0380, 0x0FE0,
0x1FF0, 0x1FF0, 0x0000, 0x1FF0, 0x1FF0, 0x1550, 0x1550, 0x1550},
{0x07C0, 0x07C0, 0x07C0, 0x07C0, 0x07C0, 0x07C0, 0x0FE0, 0x1FF0,
0x3FF8, 0x3FF8, 0x3FF8, 0x3FF8, 0x3FF8, 0x3FF8, 0x3FF8, 0x3FF8},
{0x000B, 0x0007}
},

{
{0x00C0, 0x0140, 0x0640, 0x08C0, 0x3180, 0x47FE, 0x8001, 0x8001,
0x81FE, 0x8040, 0x01C0, 0x0040, 0x03C0, 0xC080, 0x3F80, 0x0000},
{0x00C0, 0x01C0, 0x07C0, 0x0FC0, 0x3F80, 0x7FFE, 0xFFFF, 0xFFFF,
0xFFFE, 0xFFC0, 0xFFC0, 0xFFC0, 0xFFC0, 0xFF80, 0x3F80, 0x0000},
{0x0006, 0x000F}
},

{
{0x0100, 0x0280, 0x0260, 0x0310, 0x018C, 0x7FE3, 0x8000, 0x8000,
0x7F80, 0x0200, 0x0380, 0x0200, 0x03C0, 0x0107, 0x01F8, 0x0000},
{0x0100, 0x0380, 0x03E0, 0x03F0, 0x01FC, 0x7FFF, 0xFFFF, 0xFFFF,
0xFFFF, 0x03FF, 0x03FF, 0x03FF, 0x03FF, 0x01FF, 0x01F8, 0x0000},
{0x0006, 0x0000}
},

{
{0x0000, 0x4078, 0x60FC, 0x71CE, 0x7986, 0x7C06, 0x7E0E, 0x7F1C,
0x7FB8, 0x7C30, 0x6C30, 0x4600, 0x0630, 0x0330, 0x0300, 0x0000},
{0xC078, 0xE0FC, 0xF1FE, 0xFBFF, 0xFFCF, 0xFF8F, 0xFF1F, 0xFFBE,
0xFFFC, 0xFE78, 0xFF78, 0xEFF8, 0xCFF8, 0x87F8, 0x07F8, 0x0300},
{0x0001, 0x0001}
},

{
{0x0000, 0x0002, 0x0006, 0x000E, 0x001E, 0x003E, 0x007E, 0x00FE,
0x01FE, 0x003E, 0x0036, 0x0062, 0x0060, 0x00C0, 0x00C0, 0x0000},
{0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, 0x01FF,
0x03FF, 0x07FF, 0x007F, 0x00F7, 0x00F3, 0x01E1, 0x01E0, 0x01C0},
{0x0001, 0x000E}
},

{
{0x0000, 0x0080, 0x01C0, 0x03E0, 0x0080, 0x0080, 0x0080, 0x1FFC,
0x1FFC, 0x0080, 0x0080, 0x0080, 0x03E0, 0x01C0, 0x0080, 0x0000},
{0x0080, 0x01C0, 0x03E0, 0x07F0, 0x0FF8, 0x01C0, 0x3FFE, 0x3FFE,
0x3FFE, 0x3FFE, 0x01C0, 0x0FF8, 0x07F0, 0x03E0, 0x01C0, 0x0080},
{0x0007, 0x0008}
},

{
{0x0000, 0x0080, 0x01C0, 0x03E0, 0x0080, 0x0888, 0x188C, 0x3FFE,
0x188C, 0x0888, 0x0080, 0x03E0, 0x01C0, 0x0080, 0x0000, 0x0000},
{0x0080, 0x01C0, 0x03E0, 0x07F0, 0x0BE8, 0x1DDC, 0x3FFE, 0x7FFF,
0x3FFE, 0x1DDC, 0x0BE8, 0x07F0, 0x03E0, 0x01C0, 0x0080, 0x0000},
{0x0007, 0x0008}
},

{
{0x0000, 0x001E, 0x000E, 0x060E, 0x0712, 0x03A0, 0x01C0, 0x00E0,
0x0170, 0x1238, 0x1C18, 0x1C00, 0x1E00, 0x0000, 0x0000, 0x0000},
{0x007F, 0x003F, 0x0E1F, 0x0F0F, 0x0F97, 0x07E3, 0x03E1, 0x21F0,
0x31F8, 0x3A7C, 0x3C3C, 0x3E1C, 0x3F00, 0x3F80, 0x0000, 0x0000},
{0x0006, 0x0009}
},

{
{0x0000, 0x7800, 0x7000, 0x7060, 0x48E0, 0x05C0, 0x0380, 0x0700,
0x0E80, 0x1C48, 0x1838, 0x0038, 0x0078, 0x0000, 0x0000, 0x0000},
{0xFE00, 0xFC00, 0xF870, 0xF0F0, 0xE9F0, 0xC7E0, 0x87C0, 0x0F84,
0x1F8C, 0x3E5C, 0x3C3C, 0x387C, 0x00FC, 0x01FC, 0x0000, 0x0000},
{0x0006, 0x0006}
},

{
{0x0006, 0x000E, 0x001C, 0x0018, 0x0020, 0x0040, 0x00F8, 0x0004,
0x1FF4, 0x200C, 0x2AA8, 0x1FF0, 0x1F80, 0x3800, 0x6000, 0x8000},
{0x000F, 0x001F, 0x003E, 0x007C, 0x0070, 0x00E0, 0x01FC, 0x3FF6,
0x7FF6, 0x7FFE, 0x7FFC, 0x7FF8, 0x3FF0, 0x7FC0, 0xF800, 0xE000},
{0x000A, 0x0006}
},

} ;

NSCursor* wxGetStockCursor( short sIndex )
{
    ClassicCursor* pCursor = &gMacCursors[sIndex];

    //Classic mac cursors are 1bps 16x16 black and white with a 
    //identical mask that is 1 for on and 0 for off
    NSImage *theImage = [[NSImage alloc] initWithSize:NSMakeSize(16.0,16.0)];
    
    //NSCursor takes an NSImage takes a number of Representations - here
    //we need only one for the raw data
    NSBitmapImageRep *theRep = 
    [[NSBitmapImageRep alloc] 
      initWithBitmapDataPlanes: nil  // Allocate the buffer for us :)
      pixelsWide: 16 
      pixelsHigh: 16
      bitsPerSample: 1
      samplesPerPixel: 2  
      hasAlpha: YES		// Well, more like a mask...
      isPlanar: NO 
      colorSpaceName: NSCalibratedWhiteColorSpace // Normal B/W - 0 black 1 white
      bytesPerRow: 0     // I don't care - figure it out for me :)
      bitsPerPixel: 2];  // bitsPerSample * samplesPerPixel
  
    //unsigned int is better to put data in then a void*
    //note that working with bitfields would be a lot better here -
    //but since it breaks some compilers...
    wxUint32 *data = (wxUint32 *)[theRep bitmapData];  
    
    //traverse through the bitmap data
    for (int i = 0; i < 16; ++i)
    {
        //bit alpha bit alpha ... :D
        
        //Notice the = instead of |= - 
        //this is to avoid doing a memset earlier
        data[i] = 0;
                
        //do the rest of those bits and alphas :)
        for (int shift = 0; shift < 32; ++shift)
        {
            data[i] |= ( !!( (pCursor->mask[i] & (1 << (shift >> 1) )) ) ) << shift;
            data[i] |= ( !( (pCursor->bits[i] & (1 << (shift >> 1) )) ) ) << ++shift;
        }
    }

    //add the representation (data) to the image
    [theImage addRepresentation:theRep];
    
    //create the new cursor
    NSCursor* theCursor =  [[NSCursor alloc] 	initWithImage:theImage 
                                    hotSpot:NSMakePoint(pCursor->hotspot[1], pCursor->hotspot[0])
                            ];
    
    //do the usual cleanups
    [theRep release];    
    [theImage release];
    
    //return the new cursor
    return theCursor;
}    

wxCursorRefData::wxCursorRefData() :
    m_width(32), m_height(32), m_hCursor(nil)
{
}

wxCursorRefData::~wxCursorRefData()
{
    if (m_hCursor)
        [m_hCursor release];
}

// Cursors
wxCursor::wxCursor()
{
}

wxCursor::wxCursor(const char WXUNUSED(bits)[], int WXUNUSED(width), int WXUNUSED(height),
    int WXUNUSED(hotSpotX), int WXUNUSED(hotSpotY), const char WXUNUSED(maskBits)[])
{
    
}

wxCursor::wxCursor(const wxString& cursor_file, long flags, int hotSpotX, int hotSpotY)
{
    m_refData = new wxCursorRefData;
    
    //TODO:  Not sure if this works or not
    NSImage* theImage;
    
    if (flags & wxBITMAP_TYPE_MACCURSOR_RESOURCE)
    {
        //[NSBundle bundleForClass:[self class]]?
        theImage = [[NSImage alloc] 
                        initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:wxNSStringWithWxString(cursor_file) ofType:nil]
                    ];
        
    }
    else 
        theImage = [[NSImage alloc] initByReferencingFile:wxNSStringWithWxString(cursor_file)
                ];
    
    wxASSERT(theImage);
    
    M_CURSORDATA->m_hCursor = [[NSCursor alloc] initWithImage:theImage
                                        hotSpot:NSMakePoint(hotSpotX, hotSpotY)
                                ];
    
    [theImage release];
}

// Cursors by stock number
wxCursor::wxCursor(int cursor_type)
{
  m_refData = new wxCursorRefData;

  switch (cursor_type)
  {
    case wxCURSOR_IBEAM:
      M_CURSORDATA->m_hCursor = [[NSCursor IBeamCursor] retain];
      break;
    case wxCURSOR_ARROW:
      M_CURSORDATA->m_hCursor = [[NSCursor arrowCursor] retain];
      break;
/*	TODO:
    case wxCURSOR_COPY_ARROW:
        M_CURSORDATA->m_themeCursor = kThemeCopyArrowCursor ;
        break;
    case wxCURSOR_WAIT:
        M_CURSORDATA->m_themeCursor = kThemeWatchCursor ;
        break;
    case wxCURSOR_CROSS:
        M_CURSORDATA->m_themeCursor = kThemeCrossCursor;
        break;
    case wxCURSOR_SIZENWSE:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorSizeNWSE);
        }
        break;
*/
    case wxCURSOR_SIZENESW:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorSizeNESW);
        }
        break;
/*	TODO:
    case wxCURSOR_SIZEWE:
        {
            M_CURSORDATA->m_themeCursor = kThemeResizeLeftRightCursor;
        }
        break;
*/
    case wxCURSOR_SIZENS:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorSizeNS);
        }
        break;
    case wxCURSOR_SIZING:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorSize);
        }
        break;
/*	TODO:
    case wxCURSOR_HAND:
        {
            M_CURSORDATA->m_themeCursor = kThemePointingHandCursor;
        }
        break;
*/
    case wxCURSOR_BULLSEYE:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorBullseye);
        }
        break;
    case wxCURSOR_PENCIL:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorPencil);
        }
        break;
    case wxCURSOR_MAGNIFIER:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorMagnifier);
        }
        break;
    case wxCURSOR_NO_ENTRY:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorNoEntry);
        }
        break;
/*  TODO:
    case wxCURSOR_WATCH:
        {
            M_CURSORDATA->m_themeCursor = kThemeWatchCursor;
            break;
        }
*/
    case wxCURSOR_PAINT_BRUSH:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorPaintBrush);
            break;
        }
    case wxCURSOR_POINT_LEFT:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorPointLeft);
            break;
        }
    case wxCURSOR_POINT_RIGHT:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorPointRight);
            break;
        }
    case wxCURSOR_QUESTION_ARROW:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorQuestionArrow);
            break;
        }
    case wxCURSOR_BLANK:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorBlank);
            break;
        }
    case wxCURSOR_RIGHT_ARROW:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorRightArrow);
            break;
        }
    case wxCURSOR_SPRAYCAN:
        {
            M_CURSORDATA->m_hCursor = wxGetStockCursor(kwxCursorRoller);
            break;
        }
    case wxCURSOR_CHAR:
    case wxCURSOR_LEFT_BUTTON:
    case wxCURSOR_RIGHT_BUTTON:
    case wxCURSOR_MIDDLE_BUTTON:
    default:
        break;
    }
}

wxCursor::~wxCursor()
{
}

// Global cursor setting
void wxSetCursor(const wxCursor& cursor)
{
    if (cursor.GetNSCursor())
        [cursor.GetNSCursor() push];
}

static int wxBusyCursorCount = 0;

// Set the cursor to the busy cursor for all windows
void wxBeginBusyCursor(wxCursor *cursor)
{
  wxBusyCursorCount ++;
  if (wxBusyCursorCount == 1)
  {
        // TODO
  }
  else
  {
        // TODO
  }
}

// Restore cursor to normal
void wxEndBusyCursor()
{
  if (wxBusyCursorCount == 0)
    return;
    
  wxBusyCursorCount --;
  if (wxBusyCursorCount == 0)
  {
    // TODO
  }
}

// TRUE if we're between the above two calls
bool wxIsBusy()
{
  return (wxBusyCursorCount > 0);
}