add virtual DoGetTextExtent() to allow calling the overloaded wxWindowBase::GetTextEx...

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

diff --git a/src/cocoa/bitmap.mm b/src/cocoa/bitmap.mm
index c57e24e4f907f1afffd576e06c33254a28e2de9b..b2569b01044dbc4e35ccfeba078af86cf4d4e1f0 100644 (file)
--- a/src/cocoa/bitmap.mm
+++ b/src/cocoa/bitmap.mm
@@ -1,34 +1,45 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        src/cocoa/bitmap.cpp
+// Name:        src/cocoa/bitmap.mm

 // Purpose:     wxBitmap
 // Author:      David Elliott
 // Modified by:
 // Created:     2003/07/19
 // RCS-ID:      $Id$
 // Copyright:   (c) 2003 David Elliott
 // Purpose:     wxBitmap
 // Author:      David Elliott
 // Modified by:
 // Created:     2003/07/19
 // RCS-ID:      $Id$
 // Copyright:   (c) 2003 David Elliott

-// Licence:     wxWindows licence
+// Licence:     wxWidgets licence

 /////////////////////////////////////////////////////////////////////////////
 
 #include "wx/wxprec.h"
 /////////////////////////////////////////////////////////////////////////////
 
 #include "wx/wxprec.h"

+
+#include "wx/bitmap.h"
+

 #ifndef WX_PRECOMP
     #include "wx/log.h"
     #include "wx/utils.h"
     #include "wx/palette.h"
     #include "wx/icon.h"
 #ifndef WX_PRECOMP
     #include "wx/log.h"
     #include "wx/utils.h"
     #include "wx/palette.h"
     #include "wx/icon.h"

+    #include "wx/colour.h"
+    #include "wx/image.h"

 #endif //WX_PRECOMP
 #endif //WX_PRECOMP

-#include "wx/bitmap.h"
-#include "wx/image.h"
+

 #include "wx/xpmdecod.h"
 #include "wx/xpmdecod.h"

+#include "wx/rawbmp.h"

 
 #include "wx/cocoa/autorelease.h"
 #include "wx/cocoa/string.h"
 
 #include "wx/cocoa/autorelease.h"
 #include "wx/cocoa/string.h"

+#include "wx/cocoa/ObjcRef.h"

 
 #import <AppKit/NSBitmapImageRep.h>
 #import <AppKit/NSGraphics.h>
 
 #import <AppKit/NSBitmapImageRep.h>
 #import <AppKit/NSGraphics.h>

+#import <AppKit/NSImage.h>
+#import <AppKit/NSColor.h>
+
+IMPLEMENT_ABSTRACT_CLASS(wxBitmapHandler, wxBitmapHandlerBase)

 
 // ========================================================================
 // wxBitmapRefData
 // ========================================================================
 
 // ========================================================================
 // wxBitmapRefData
 // ========================================================================

+

 class wxBitmapRefData: public wxGDIRefData
 {
     friend class wxBitmap;
 class wxBitmapRefData: public wxGDIRefData
 {
     friend class wxBitmap;


@@ -37,6 +48,8 @@ public:
     wxBitmapRefData( const wxBitmapRefData& data );
     virtual ~wxBitmapRefData();
 
     wxBitmapRefData( const wxBitmapRefData& data );
     virtual ~wxBitmapRefData();
 

+    virtual bool IsOk() const { return m_ok; }
+

 protected:
     int                 m_width;
     int                 m_height;
 protected:
     int                 m_width;
     int                 m_height;


@@ -49,8 +62,6 @@ protected:
     wxMask             *m_bitmapMask; // Optional mask
 };
 
     wxMask             *m_bitmapMask; // Optional mask
 };
 

-#define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
-

 wxBitmapRefData::wxBitmapRefData()
 {
     m_ok = FALSE;
 wxBitmapRefData::wxBitmapRefData()
 {
     m_ok = FALSE;


@@ -65,6 +76,8 @@ wxBitmapRefData::wxBitmapRefData()
 
 wxBitmapRefData::wxBitmapRefData( const wxBitmapRefData& data)
 {
 
 wxBitmapRefData::wxBitmapRefData( const wxBitmapRefData& data)
 {

+    wxAutoNSAutoreleasePool pool;
+

     m_width = data.m_width;
     m_height = data.m_height;
     m_depth = data.m_depth;
     m_width = data.m_width;
     m_height = data.m_height;
     m_depth = data.m_depth;


@@ -72,13 +85,13 @@ wxBitmapRefData::wxBitmapRefData( const wxBitmapRefData& data)
     m_numColors = data.m_numColors;
     m_bitmapPalette = data.m_bitmapPalette;
     m_quality = data.m_quality;
     m_numColors = data.m_numColors;
     m_bitmapPalette = data.m_bitmapPalette;
     m_quality = data.m_quality;

-    m_cocoaNSBitmapImageRep = [data.m_cocoaNSBitmapImageRep copyWithZone:nil];
+    m_cocoaNSBitmapImageRep = wxGCSafeRetain([[data.m_cocoaNSBitmapImageRep copyWithZone:nil] autorelease]);

     m_bitmapMask = data.m_bitmapMask?new wxMask(*data.m_bitmapMask):NULL;
 }
 
 wxBitmapRefData::~wxBitmapRefData()
 {
     m_bitmapMask = data.m_bitmapMask?new wxMask(*data.m_bitmapMask):NULL;
 }
 
 wxBitmapRefData::~wxBitmapRefData()
 {

-    [m_cocoaNSBitmapImageRep release];
+    wxGCSafeRelease(m_cocoaNSBitmapImageRep);

     m_cocoaNSBitmapImageRep = NULL;
 
     delete m_bitmapMask;
     m_cocoaNSBitmapImageRep = NULL;
 
     delete m_bitmapMask;


@@ -88,6 +101,9 @@ wxBitmapRefData::~wxBitmapRefData()
 // ========================================================================
 // wxBitmap
 // ========================================================================
 // ========================================================================
 // wxBitmap
 // ========================================================================

+
+#define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
+

 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
 
 wxBitmap::wxBitmap()
 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
 
 wxBitmap::wxBitmap()


@@ -111,12 +127,17 @@ wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits
     /* TODO: create the bitmap from data */
 }
 
     /* TODO: create the bitmap from data */
 }
 

-wxBitmap::wxBitmap(int w, int h, int d)
+wxBitmap::wxBitmap(NSImage* cocoaNSImage)

 {
 {

-    (void)Create(w, h, d);
+    (void) Create(cocoaNSImage);

 }
 
 }
 

-wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
+wxBitmap::wxBitmap(NSBitmapImageRep* cocoaNSBitmapImageRep)
+{
+    (void) Create(cocoaNSBitmapImageRep);
+}
+
+wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)

 {
     (void) Create(data, type, width, height, depth);
 }
 {
     (void) Create(data, type, width, height, depth);
 }


@@ -126,12 +147,12 @@ wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
     LoadFile(filename, type);
 }
 
     LoadFile(filename, type);
 }
 

-wxObjectRefData *wxBitmap::CreateRefData() const
+wxGDIRefData *wxBitmap::CreateGDIRefData() const

 {
     return new wxBitmapRefData;
 }
 
 {
     return new wxBitmapRefData;
 }
 

-wxObjectRefData *wxBitmap::CloneRefData(const wxObjectRefData *data) const
+wxGDIRefData *wxBitmap::CloneGDIRefData(const wxGDIRefData *data) const

 {
     return new wxBitmapRefData(*(wxBitmapRefData*)data);
 }
 {
     return new wxBitmapRefData(*(wxBitmapRefData*)data);
 }


@@ -143,13 +164,39 @@ WX_NSBitmapImageRep wxBitmap::GetNSBitmapImageRep()
     return M_BITMAPDATA->m_cocoaNSBitmapImageRep;
 }
 
     return M_BITMAPDATA->m_cocoaNSBitmapImageRep;
 }
 

+WX_NSImage wxBitmap::GetNSImage(bool useMask) const
+{
+    if(!Ok())
+        return nil;
+    NSImage *nsimage = [[[NSImage alloc]
+            initWithSize:NSMakeSize(GetWidth(), GetHeight())] autorelease];
+    if(!nsimage)
+        return nil;
+    [nsimage addRepresentation: M_BITMAPDATA->m_cocoaNSBitmapImageRep];
+    if(useMask && GetMask())
+    {
+        // Show before/after to prove that the bitmap itself is not changed
+        // even though we just composited onto the NSImage
+        wxLogTrace(wxTRACE_COCOA,wxT("Before: bpp=%d"),[M_BITMAPDATA->m_cocoaNSBitmapImageRep bitsPerPixel]);
+        NSImage *maskImage = [[NSImage alloc]
+                initWithSize:NSMakeSize(GetWidth(), GetHeight())];
+        [maskImage addRepresentation: GetMask()->GetNSBitmapImageRep()];
+        [nsimage lockFocus];
+        [maskImage compositeToPoint:NSZeroPoint operation:NSCompositeDestinationIn];
+        [nsimage unlockFocus];
+        [maskImage release];
+        wxLogTrace(wxTRACE_COCOA,wxT("After: bpp=%d"),[M_BITMAPDATA->m_cocoaNSBitmapImageRep bitsPerPixel]);
+    }
+    return nsimage;
+}
+

 void wxBitmap::SetNSBitmapImageRep(WX_NSBitmapImageRep bitmapImageRep)
 {
     if(!M_BITMAPDATA)
         return;
     // NOTE: No checking is done to make sure width/height agree
 void wxBitmap::SetNSBitmapImageRep(WX_NSBitmapImageRep bitmapImageRep)
 {
     if(!M_BITMAPDATA)
         return;
     // NOTE: No checking is done to make sure width/height agree

-    [bitmapImageRep retain];
-    [M_BITMAPDATA->m_cocoaNSBitmapImageRep release];
+    wxGCSafeRetain(bitmapImageRep);
+    wxGCSafeRelease(M_BITMAPDATA->m_cocoaNSBitmapImageRep);

     M_BITMAPDATA->m_cocoaNSBitmapImageRep = bitmapImageRep;
 }
 
     M_BITMAPDATA->m_cocoaNSBitmapImageRep = bitmapImageRep;
 }
 


@@ -209,11 +256,6 @@ void wxBitmap::SetMask(wxMask *mask)
     M_BITMAPDATA->m_bitmapMask = mask ;
 }
 
     M_BITMAPDATA->m_bitmapMask = mask ;
 }
 

-bool wxBitmap::Ok() const
-{
-    return m_refData && M_BITMAPDATA->m_ok;
-}
-

 wxPalette* wxBitmap::GetPalette() const
 {
     if(!m_refData)
 wxPalette* wxBitmap::GetPalette() const
 {
     if(!m_refData)


@@ -251,6 +293,8 @@ int wxBitmap::GetHeight() const
 
 bool wxBitmap::Create(int w, int h, int d)
 {
 
 bool wxBitmap::Create(int w, int h, int d)
 {

+    wxAutoNSAutoreleasePool pool;
+

     UnRef();
 
     m_refData = new wxBitmapRefData;
     UnRef();
 
     m_refData = new wxBitmapRefData;


@@ -260,7 +304,7 @@ bool wxBitmap::Create(int w, int h, int d)
     M_BITMAPDATA->m_depth = d;
 
     /* TODO: create new bitmap */
     M_BITMAPDATA->m_depth = d;
 
     /* TODO: create new bitmap */

-    M_BITMAPDATA->m_cocoaNSBitmapImageRep = [[NSBitmapImageRep alloc]
+    M_BITMAPDATA->m_cocoaNSBitmapImageRep = wxGCSafeRetain([[[NSBitmapImageRep alloc]

             initWithBitmapDataPlanes: NULL
             pixelsWide: w
             pixelsHigh: h
             initWithBitmapDataPlanes: NULL
             pixelsWide: w
             pixelsHigh: h


@@ -269,10 +313,11 @@ bool wxBitmap::Create(int w, int h, int d)
             hasAlpha: NO
             isPlanar: NO
             colorSpaceName: NSCalibratedRGBColorSpace
             hasAlpha: NO
             isPlanar: NO
             colorSpaceName: NSCalibratedRGBColorSpace

-            bytesPerRow: 0
-            bitsPerPixel: 0];
+            bytesPerRow: 0  // NOTE: Contrary to Apple documentation Mac OS
+                            // 10.4 will add padding bytes when 0 is used here
+            bitsPerPixel: 0] autorelease]);

 
 

-    wxLogDebug("M_BITMAPDATA=%p NSBitmapImageRep bitmapData=%p", M_BITMAPDATA, [M_BITMAPDATA->m_cocoaNSBitmapImageRep bitmapData]);
+    wxLogTrace(wxTRACE_COCOA,wxT("M_BITMAPDATA=%p NSBitmapImageRep bitmapData=%p"), M_BITMAPDATA, [M_BITMAPDATA->m_cocoaNSBitmapImageRep bitmapData]);

     M_BITMAPDATA->m_ok = true;
     M_BITMAPDATA->m_numColors = 0;
     M_BITMAPDATA->m_quality = 0;
     M_BITMAPDATA->m_ok = true;
     M_BITMAPDATA->m_numColors = 0;
     M_BITMAPDATA->m_quality = 0;


@@ -299,7 +344,7 @@ bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
         M_BITMAPDATA->m_ok = true;
         M_BITMAPDATA->m_numColors = 0;
         M_BITMAPDATA->m_quality = 0;
         M_BITMAPDATA->m_ok = true;
         M_BITMAPDATA->m_numColors = 0;
         M_BITMAPDATA->m_quality = 0;

-        M_BITMAPDATA->m_cocoaNSBitmapImageRep = [imageRep retain];
+        M_BITMAPDATA->m_cocoaNSBitmapImageRep = wxGCSafeRetain(imageRep);

         M_BITMAPDATA->m_bitmapMask = NULL;
         return true;
     }
         M_BITMAPDATA->m_bitmapMask = NULL;
         return true;
     }


@@ -312,7 +357,34 @@ bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
     return true;
 }
 
     return true;
 }
 

-bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
+bool wxBitmap::Create(NSImage* cocoaNSImage)
+{
+    wxAutoNSAutoreleasePool pool;
+    NSBitmapImageRep *bitmapImageRep = [NSBitmapImageRep imageRepWithData:[cocoaNSImage TIFFRepresentation]];
+    return Create(bitmapImageRep);
+}
+
+bool wxBitmap::Create(NSBitmapImageRep *imageRep)
+{
+    UnRef();
+    m_refData = new wxBitmapRefData;
+    if(imageRep != nil)
+    {
+        M_BITMAPDATA->m_width = [imageRep pixelsWide];
+        M_BITMAPDATA->m_height = [imageRep pixelsHigh];
+        M_BITMAPDATA->m_depth = [imageRep bitsPerPixel];
+        M_BITMAPDATA->m_ok = true;
+        M_BITMAPDATA->m_numColors = 0;
+        M_BITMAPDATA->m_quality = 0;
+        M_BITMAPDATA->m_cocoaNSBitmapImageRep = wxGCSafeRetain(imageRep);
+        M_BITMAPDATA->m_bitmapMask = NULL;
+        return true;
+    }
+    else
+        return false;
+}
+
+bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)

 {
     UnRef();
 
 {
     UnRef();
 


@@ -326,43 +398,82 @@ bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type, const wxPal
     return false;
 }
 
     return false;
 }
 

-bool wxBitmap::CopyFromIcon(const wxIcon& icno)
+bool wxBitmap::CopyFromIcon(const wxIcon& icon)

 {
 {

-    return false;
-}
+    // Pool here due to lack of one during wx init phase
+    wxAutoNSAutoreleasePool pool;

 
 

-wxBitmap wxBitmap::GetSubBitmap(wxRect const&) const
-{
-    return wxNullBitmap;
+    UnRef();
+    if(!icon.GetNSImage());
+    [icon.GetNSImage() lockFocus];
+    NSRect imageRect;
+    imageRect.origin.x = imageRect.origin.y = 0.0;
+    imageRect.size = [icon.GetNSImage() size];
+    NSBitmapImageRep *newBitmapRep = [[[NSBitmapImageRep alloc] initWithFocusedViewRect:imageRect] autorelease];
+    [icon.GetNSImage() unlockFocus];
+    if(!newBitmapRep)
+        return false;
+    m_refData = new wxBitmapRefData;
+    M_BITMAPDATA->m_cocoaNSBitmapImageRep = wxGCSafeRetain(newBitmapRep);
+    M_BITMAPDATA->m_width = [newBitmapRep pixelsWide];
+    M_BITMAPDATA->m_height = [newBitmapRep pixelsHigh];
+    M_BITMAPDATA->m_depth = [newBitmapRep bitsPerSample]*[newBitmapRep samplesPerPixel];
+    M_BITMAPDATA->m_ok = true;
+    M_BITMAPDATA->m_numColors = 0;
+    M_BITMAPDATA->m_quality = 0;
+    M_BITMAPDATA->m_bitmapMask = NULL;
+    return true;

 }
 
 }
 

-wxImage wxBitmap::ConvertToImage() const
+wxBitmap wxBitmap::GetSubBitmap(const wxRect& rect) const

 {
 {

-    if(!M_BITMAPDATA->m_ok)
-        return wxImage(5,5)/*wxNullImage*/;
-    return wxImage(M_BITMAPDATA->m_width,M_BITMAPDATA->m_height);
-}
+    wxAutoNSAutoreleasePool pool;
+    if(!Ok())
+        return wxNullBitmap;
+    NSImage *nsimage = GetNSImage(false);

 
 

-bool wxBitmap::CreateFromXpm(const char **xpm)
-{
-#if wxUSE_IMAGE && wxUSE_XPM
-    UnRef();
+    [nsimage lockFocus];
+    NSRect imageRect = {{0,0}, [nsimage size]};
+    imageRect.origin.x = imageRect.size.width * rect.x / GetWidth();
+    imageRect.origin.y = imageRect.size.height * rect.y / GetHeight();
+    imageRect.size.width *= static_cast<CGFloat>(rect.width) / GetWidth();
+    imageRect.size.height *= static_cast<CGFloat>(rect.height) / GetHeight();

 
 

-    wxCHECK_MSG( xpm, false, wxT("invalid XPM data") )
+    NSBitmapImageRep *newBitmapRep = [[NSBitmapImageRep alloc] initWithFocusedViewRect:imageRect];
+    [nsimage unlockFocus];

 
 

-    wxXPMDecoder decoder;
-    wxImage img = decoder.ReadData(xpm);
-    wxCHECK_MSG( img.Ok(), false, wxT("invalid XPM data") )
+    wxBitmap newBitmap(newBitmapRep);

 
 

-    *this = wxBitmap(img);
-    return true;
-#else
-    return false;
-#endif
+    return (newBitmap);
+}
+
+wxImage wxBitmap::ConvertToImage() const
+{
+    wxAutoNSAutoreleasePool pool;
+    if(!Ok())
+        return /*wxImage(5,5)*/wxNullImage;
+    NSImage *nsimage = GetNSImage(false /* don't use mask */);
+    wxImage newImage(M_BITMAPDATA->m_width,M_BITMAPDATA->m_height);
+    [nsimage lockFocus];
+    for(int i=0; i < M_BITMAPDATA->m_width; i++)
+    {
+        // Don't let the pool get too big as you'll notice we're creating
+        // two autoreleased NSColor objects with every iteration.
+        wxAutoNSAutoreleasePool loopPool;
+        for(int j=0; j < M_BITMAPDATA->m_height; j++)
+        {
+            NSColor *pixelColor = NSReadPixel(NSMakePoint(i,M_BITMAPDATA->m_height - j - 1));
+            NSColor *color = [pixelColor colorUsingColorSpaceName:NSCalibratedRGBColorSpace];
+            newImage.SetRGB(i,j,int([color redComponent]*255.0), int([color greenComponent]*255.0), int([color blueComponent]*255.0));
+        }
+    }
+    [nsimage unlockFocus];
+    return newImage;

 }
 
 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 {
 }
 
 bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 {

+    wxAutoNSAutoreleasePool pool;

     UnRef();
 
     wxCHECK_MSG(image.Ok(), false, wxT("invalid image"));
     UnRef();
 
     wxCHECK_MSG(image.Ok(), false, wxT("invalid image"));


@@ -372,7 +483,7 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
 
     M_BITMAPDATA->m_width = image.GetWidth();
     M_BITMAPDATA->m_height = image.GetHeight();
 
     M_BITMAPDATA->m_width = image.GetWidth();
     M_BITMAPDATA->m_height = image.GetHeight();

-    NSBitmapImageRep *bitmapImage = [[NSBitmapImageRep alloc]
+    NSBitmapImageRep *bitmapImage = [[[NSBitmapImageRep alloc]

             initWithBitmapDataPlanes: NULL
             pixelsWide: image.GetWidth()
             pixelsHigh: image.GetHeight()
             initWithBitmapDataPlanes: NULL
             pixelsWide: image.GetWidth()
             pixelsHigh: image.GetHeight()


@@ -381,9 +492,11 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
             hasAlpha: NO
             isPlanar: NO
             colorSpaceName: NSCalibratedRGBColorSpace
             hasAlpha: NO
             isPlanar: NO
             colorSpaceName: NSCalibratedRGBColorSpace

-            bytesPerRow: 0
-            bitsPerPixel: 0];
+            bytesPerRow: image.GetWidth()*3
+            bitsPerPixel: 0] autorelease];

 
 

+    // TODO: Specify bytesPerRow:0 and then use [bitmapImage bytesPerRow]
+    // so that the rows are aligned suitably for altivec by the OS (Tiger)

     const int numBytes = image.GetWidth()*image.GetHeight()*3;
     memcpy([bitmapImage bitmapData], image.GetData(), numBytes);
     // TODO: Alpha and convert to desired depth
     const int numBytes = image.GetWidth()*image.GetHeight()*3;
     memcpy([bitmapImage bitmapData], image.GetData(), numBytes);
     // TODO: Alpha and convert to desired depth


@@ -391,11 +504,42 @@ bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
     M_BITMAPDATA->m_ok = true;
     M_BITMAPDATA->m_numColors = 0;
     M_BITMAPDATA->m_quality = 0;
     M_BITMAPDATA->m_ok = true;
     M_BITMAPDATA->m_numColors = 0;
     M_BITMAPDATA->m_quality = 0;

-    M_BITMAPDATA->m_cocoaNSBitmapImageRep = bitmapImage;
-    M_BITMAPDATA->m_bitmapMask = NULL;
+    M_BITMAPDATA->m_cocoaNSBitmapImageRep = wxGCSafeRetain(bitmapImage);
+    M_BITMAPDATA->m_bitmapMask = new wxMask(*this,wxColour(image.GetMaskRed(),image.GetMaskGreen(),image.GetMaskBlue()));

     return true;
 }
 
     return true;
 }
 

+void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
+{
+    if(!Ok())
+        return NULL;
+
+    NSBitmapImageRep *bitmapRep = M_BITMAPDATA->m_cocoaNSBitmapImageRep;
+    if(!bitmapRep)
+        return NULL;
+
+    if([bitmapRep bitsPerPixel]!=bpp)
+    {
+        wxFAIL_MSG( _T("incorrect bitmap type in wxBitmap::GetRawData()") );
+        return NULL;
+    }
+    data.m_width = [bitmapRep pixelsWide];
+    data.m_height = [bitmapRep pixelsHigh];
+    data.m_stride = [bitmapRep bytesPerRow];
+    return [bitmapRep bitmapData];
+
+    // NOTE: It is up to the user to make sure they used the proper
+    // pixel format class that details what is actually inside the pixels
+    // We can only check to make sure that the total number of bits per
+    // pixel are being iterated over properly
+    // NSBitmapImageRep can contain grayscale or CMYK data and
+    // wxPixelDataBase doesn't really define the color format
+}
+
+void wxBitmap::UngetRawData(wxPixelDataBase& data)
+{   // TODO
+}
+

 // ========================================================================
 // wxMask
 // ========================================================================
 // ========================================================================
 // wxMask
 // ========================================================================


@@ -404,18 +548,14 @@ IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
 
 wxMask::wxMask()
 {
 
 wxMask::wxMask()
 {

-/* TODO
-    m_maskBitmap = 0;
-*/
+    m_cocoaNSBitmapImageRep = nil;

 }
 
 // Construct a mask from a bitmap and a colour indicating
 // the transparent area
 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
 {
 }
 
 // Construct a mask from a bitmap and a colour indicating
 // the transparent area
 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
 {

-/* TODO
-    m_maskBitmap = 0;
-*/
+    m_cocoaNSBitmapImageRep = nil;

     Create(bitmap, colour);
 }
 
     Create(bitmap, colour);
 }
 


@@ -423,9 +563,7 @@ wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
 // the transparent area
 wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
 {
 // the transparent area
 wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
 {

-/* TODO
-    m_maskBitmap = 0;
-*/
+    m_cocoaNSBitmapImageRep = nil;

 
     Create(bitmap, paletteIndex);
 }
 
     Create(bitmap, paletteIndex);
 }


@@ -433,22 +571,28 @@ wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
 // Construct a mask from a mono bitmap (copies the bitmap).
 wxMask::wxMask(const wxBitmap& bitmap)
 {
 // Construct a mask from a mono bitmap (copies the bitmap).
 wxMask::wxMask(const wxBitmap& bitmap)
 {

-/* TODO
-    m_maskBitmap = 0;
-*/
+    m_cocoaNSBitmapImageRep = nil;

 
     Create(bitmap);
 }
 
 
     Create(bitmap);
 }
 

+// Copy constructor
+wxMask::wxMask(const wxMask& src)
+:   wxObject(src)
+,   m_cocoaNSBitmapImageRep(wxGCSafeRetain(src.m_cocoaNSBitmapImageRep))
+{
+}
+

 wxMask::~wxMask()
 {
 wxMask::~wxMask()
 {

-// TODO: delete mask bitmap
+    wxGCSafeRelease(m_cocoaNSBitmapImageRep);

 }
 
 // Create a mask from a mono bitmap (copies the bitmap).
 bool wxMask::Create(const wxBitmap& bitmap)
 {
 // TODO
 }
 
 // Create a mask from a mono bitmap (copies the bitmap).
 bool wxMask::Create(const wxBitmap& bitmap)
 {
 // TODO

+    wxLogDebug(wxT("Cannot yet create a mask from a mono bitmap"));

     return FALSE;
 }
 
     return FALSE;
 }
 


@@ -457,14 +601,125 @@ bool wxMask::Create(const wxBitmap& bitmap)
 bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
 {
 // TODO
 bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
 {
 // TODO

+    wxLogDebug(wxT("Cannot yet create a mask from a palette bitmap"));

     return FALSE;
 }
 
     return FALSE;
 }
 

+template <typename PixelData>
+static bool wxMask_CreateFromBitmapData(PixelData srcData, const wxColour& colour, unsigned char *dstData)
+{
+    wxCHECK_MSG(dstData,false,wxT("Couldn't access mask data"));
+    typename PixelData::Iterator p(srcData);
+    const int nRows = srcData.GetHeight();
+    const int nCols = srcData.GetWidth();
+    // Total number of bytes per destination column
+    const int dstRowLength = (nCols+7)/8;
+    // Number of source columns that fit into a byte in the destination
+    const int width_aligned = nCols/8*8;
+    for(int y=0; y<nRows; ++y)
+    {
+        typename PixelData::Iterator rowStart(p);
+        unsigned char *dstRow = dstData + y*dstRowLength;
+        for(int x=0; x<width_aligned; x+=8)
+        {
+            unsigned char *dstByte = dstRow + x/8;
+            *dstByte = 0;
+            // Take source RGB, compare it with the wxColour
+            for(int j=0; j<8; ++j, ++p)
+            {
+                *dstByte +=
+                (   p.Red()!=colour.Red()
+                ||  p.Green()!=colour.Green()
+                ||  p.Blue()!=colour.Blue()
+                )   << (7-j);
+            }
+        }
+        // Handle the remaining 0-7 pixels in the row
+        unsigned char *dstByte = dstRow + width_aligned/8;
+        if(nCols%8>0)
+            *dstByte = 0;
+        for(int j=0; j<(nCols%8); ++j, ++p)
+        {
+            *dstByte +=
+            (   p.Red()!=colour.Red()
+            ||  p.Green()!=colour.Green()
+            ||  p.Blue()!=colour.Blue()
+            )   << (7-j);
+        }
+        p = rowStart;
+        p.OffsetY(srcData,1);
+    }
+    return true;
+}
+

 // Create a mask from a bitmap and a colour indicating
 // the transparent area
 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
 {
 // Create a mask from a bitmap and a colour indicating
 // the transparent area
 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
 {

-// TODO
-    return FALSE;
-}
+    wxAutoNSAutoreleasePool pool;
+    if(!bitmap.Ok())
+        return false;
+    int bmpWidth = bitmap.GetWidth();
+    int bmpHeight = bitmap.GetHeight();
+    int dstRowLength = (bmpWidth+7)/8;
+
+    // Create a bitmap image rep with 1-bit per pixel data representing
+    // the alpha channel padded such that rows end on byte boundaries
+    // Since NSBitmapImageRep doesn't have any sort of NSNullColorSpace
+    // we must have at least one channel of non-alpha data.  In order to
+    // make our life easy, we use planar data which results in two
+    // separate arrays.  We don't need to touch the first because it
+    // should never be used.  The second is the 1-bit "alpha" data.
+    NSBitmapImageRep *maskRep = [[[NSBitmapImageRep alloc]
+        initWithBitmapDataPlanes:NULL pixelsWide:bmpWidth
+        pixelsHigh:bmpHeight bitsPerSample:1
+        samplesPerPixel:2 hasAlpha:YES isPlanar:YES
+        colorSpaceName:NSCalibratedWhiteColorSpace
+        bytesPerRow:dstRowLength bitsPerPixel:1] autorelease];
+    wxCHECK(maskRep,false);
+
+    // We need the source NSBitmapImageRep to detemine its pixel format
+    NSBitmapImageRep *srcBitmapRep = const_cast<wxBitmap&>(bitmap).GetNSBitmapImageRep();
+    wxCHECK_MSG(srcBitmapRep,false,wxT("Can't create mask for an uninitialized bitmap"));
+
+    // Get a pointer to the destination data
+    unsigned char *dstPlanes[5] = {NULL,NULL,NULL,NULL,NULL};
+    [maskRep getBitmapDataPlanes:dstPlanes];
+    unsigned char *dstData = dstPlanes[1];
+    // The wxImage format (which we use whenever we imported from wxImage)
+    if([srcBitmapRep bitsPerPixel]==24 && [srcBitmapRep bitsPerSample]==8 && [srcBitmapRep samplesPerPixel]==3 && [srcBitmapRep hasAlpha]==NO)
+    {
+        wxPixelData<wxBitmap,wxNativePixelFormat> pixelData(const_cast<wxBitmap&>(bitmap));
+        wxCHECK_MSG(wxMask_CreateFromBitmapData(pixelData, colour, dstData),
+            false, wxT("Unable to access raw data"));
+    }
+    // 32-bpp RGBx (x=throw away, no alpha)
+    else if([srcBitmapRep bitsPerPixel]==32 && [srcBitmapRep bitsPerSample]==8 && [srcBitmapRep samplesPerPixel]==3 && [srcBitmapRep hasAlpha]==NO)
+    {
+        typedef wxPixelFormat<unsigned char,32,0,1,2> PixelFormat;
+        wxPixelData<wxBitmap,PixelFormat> pixelData(const_cast<wxBitmap&>(bitmap));
+        wxCHECK_MSG(wxMask_CreateFromBitmapData(pixelData, colour, dstData),
+            false, wxT("Unable to access raw data"));
+    }
+    // 32-bpp RGBA
+    else if([srcBitmapRep bitsPerPixel]==32 && [srcBitmapRep bitsPerSample]==8 && [srcBitmapRep samplesPerPixel]==4 && [srcBitmapRep hasAlpha]==YES)
+    {
+        wxPixelData<wxBitmap,wxAlphaPixelFormat> pixelData(const_cast<wxBitmap&>(bitmap));
+        wxCHECK_MSG(wxMask_CreateFromBitmapData(pixelData, colour, dstData),
+            false, wxT("Unable to access raw data"));
+    }
+    else if([srcBitmapRep bitsPerPixel]==8 && [srcBitmapRep bitsPerSample]==8 && [srcBitmapRep samplesPerPixel]==1 && [srcBitmapRep hasAlpha]==NO)
+    // 8-bpp Grayscale, no alpha
+    {   // Force all RGB to access the same grayscale component
+        typedef wxPixelFormat<unsigned char,8,0,0,0> PixelFormat;
+        wxPixelData<wxBitmap,PixelFormat> pixelData(const_cast<wxBitmap&>(bitmap));
+        wxCHECK_MSG(wxMask_CreateFromBitmapData(pixelData, colour, dstData),
+            false, wxT("Unable to access raw data"));
+    }
+    else
+    {   wxCHECK_MSG(false,false,wxT("Unimplemented pixel format")); }

 
 

+    // maskRep was autoreleased in case we had to exit quickly
+    m_cocoaNSBitmapImageRep = wxGCSafeRetain(maskRep);
+    return true;
+}