// Created: 2003/07/19
// RCS-ID: $Id$
// Copyright: (c) 2003 David Elliott
-// Licence: wxWindows licence
+// Licence: wxWidgets licence
/////////////////////////////////////////////////////////////////////////////
#include "wx/wxprec.h"
#include "wx/utils.h"
#include "wx/palette.h"
#include "wx/icon.h"
+ #include "wx/colour.h"
#endif //WX_PRECOMP
#include "wx/bitmap.h"
#include "wx/image.h"
#import <AppKit/NSBitmapImageRep.h>
#import <AppKit/NSGraphics.h>
+#import <AppKit/NSImage.h>
// ========================================================================
// wxBitmapRefData
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)
bytesPerRow: 0
bitsPerPixel: 0];
- 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;
wxImage wxBitmap::ConvertToImage() const
{
- if(!M_BITMAPDATA->m_ok)
- return wxImage(5,5)/*wxNullImage*/;
+ if(!Ok())
+ return /*wxImage(5,5)*/wxNullImage;
return wxImage(M_BITMAPDATA->m_width,M_BITMAPDATA->m_height);
}
M_BITMAPDATA->m_numColors = 0;
M_BITMAPDATA->m_quality = 0;
M_BITMAPDATA->m_cocoaNSBitmapImageRep = bitmapImage;
- M_BITMAPDATA->m_bitmapMask = NULL;
+ M_BITMAPDATA->m_bitmapMask = new wxMask(*this,wxColour(image.GetMaskRed(),image.GetMaskGreen(),image.GetMaskBlue()));
return true;
}
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)
{
-/* TODO
- m_maskBitmap = 0;
-*/
+ m_cocoaNSBitmapImageRep = nil;
Create(bitmap, colour);
}
// the transparent area
wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
{
-/* TODO
- m_maskBitmap = 0;
-*/
+ m_cocoaNSBitmapImageRep = nil;
Create(bitmap, paletteIndex);
}
// Construct a mask from a mono bitmap (copies the bitmap).
wxMask::wxMask(const wxBitmap& bitmap)
{
-/* TODO
- m_maskBitmap = 0;
-*/
+ m_cocoaNSBitmapImageRep = nil;
Create(bitmap);
}
wxMask::~wxMask()
{
-// TODO: delete mask bitmap
+ [m_cocoaNSBitmapImageRep release];
}
// Create a mask from a mono bitmap (copies the bitmap).
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)
{
-// 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
+ { wxCHECK_MSG(false,false,wxT("Unimplemented pixel format")); }
+
+ // maskRep was autoreleased in case we had to exit quickly
+ m_cocoaNSBitmapImageRep = [maskRep retain];
+ return true;
}
projects / wxWidgets.git / blobdiff