/////////////////////////////////////////////////////////////////////////////
-// Name: bitmap.cpp
+// Name: src/cocoa/bitmap.mm
// Purpose: wxBitmap
-// Author: AUTHOR
+// Author: David Elliott
// Modified by:
-// Created: ??/??/98
+// Created: 2003/07/19
// RCS-ID: $Id$
-// Copyright: (c) AUTHOR
-// Licence: wxWindows licence
+// Copyright: (c) 2003 David Elliott
+// Licence: wxWidgets licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "bitmap.h"
-#endif
+#include "wx/wxprec.h"
-#include "wx/setup.h"
-#include "wx/utils.h"
-#include "wx/palette.h"
#include "wx/bitmap.h"
-#include "wx/icon.h"
-#include "wx/log.h"
-#include "wx/image.h"
-#if !USE_SHARED_LIBRARIES
-IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
-IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
-#endif
+#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
+
+#include "wx/xpmdecod.h"
+#include "wx/rawbmp.h"
+
+#include "wx/cocoa/autorelease.h"
+#include "wx/cocoa/string.h"
+
+#import <AppKit/NSBitmapImageRep.h>
+#import <AppKit/NSGraphics.h>
+#import <AppKit/NSImage.h>
+#import <AppKit/NSColor.h>
+
+IMPLEMENT_ABSTRACT_CLASS(wxBitmapHandler, wxBitmapHandlerBase)
+
+// ========================================================================
+// wxBitmapRefData
+// ========================================================================
+class wxBitmapRefData: public wxGDIRefData
+{
+ friend class wxBitmap;
+public:
+ wxBitmapRefData();
+ wxBitmapRefData( const wxBitmapRefData& data );
+ virtual ~wxBitmapRefData();
+
+protected:
+ int m_width;
+ int m_height;
+ int m_depth;
+ bool m_ok;
+ int m_numColors;
+ wxPalette m_bitmapPalette;
+ int m_quality;
+ WX_NSBitmapImageRep m_cocoaNSBitmapImageRep;
+ wxMask *m_bitmapMask; // Optional mask
+};
+
+#define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
wxBitmapRefData::wxBitmapRefData()
{
m_depth = 0;
m_quality = 0;
m_numColors = 0;
+ m_cocoaNSBitmapImageRep = nil;
m_bitmapMask = NULL;
}
+wxBitmapRefData::wxBitmapRefData( const wxBitmapRefData& data)
+{
+ m_width = data.m_width;
+ m_height = data.m_height;
+ m_depth = data.m_depth;
+ m_ok = data.m_ok;
+ m_numColors = data.m_numColors;
+ m_bitmapPalette = data.m_bitmapPalette;
+ m_quality = data.m_quality;
+ m_cocoaNSBitmapImageRep = [data.m_cocoaNSBitmapImageRep copyWithZone:nil];
+ m_bitmapMask = data.m_bitmapMask?new wxMask(*data.m_bitmapMask):NULL;
+}
+
wxBitmapRefData::~wxBitmapRefData()
{
- /*
- * TODO: delete the bitmap data here.
- */
+ [m_cocoaNSBitmapImageRep release];
+ m_cocoaNSBitmapImageRep = NULL;
- if (m_bitmapMask)
- delete m_bitmapMask;
+ delete m_bitmapMask;
m_bitmapMask = NULL;
}
+// ========================================================================
+// wxBitmap
+// ========================================================================
+IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
+
wxBitmap::wxBitmap()
{
m_refData = NULL;
-
- if ( wxTheBitmapList )
- wxTheBitmapList->AddBitmap(this);
}
wxBitmap::~wxBitmap()
{
- if (wxTheBitmapList)
- wxTheBitmapList->DeleteObject(this);
}
wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
M_BITMAPDATA->m_numColors = 0;
/* TODO: create the bitmap from data */
-
- if ( wxTheBitmapList )
- wxTheBitmapList->AddBitmap(this);
}
wxBitmap::wxBitmap(int w, int h, int d)
{
(void)Create(w, h, d);
-
- if ( wxTheBitmapList )
- wxTheBitmapList->AddBitmap(this);
}
-wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
+wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)
{
(void) Create(data, type, width, height, depth);
-
- if ( wxTheBitmapList )
- wxTheBitmapList->AddBitmap(this);
}
wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
{
LoadFile(filename, type);
-
- if ( wxTheBitmapList )
- wxTheBitmapList->AddBitmap(this);
-}
-
-wxBitmap::wxBitmap(const wxImage& image, int depth)
-{
-}
-
-wxBitmap::wxBitmap(char **bits)
-{
}
-/* TODO: maybe allow creation from XPM
-// Create from data
-wxBitmap::wxBitmap(const char **data)
+wxObjectRefData *wxBitmap::CreateRefData() const
{
- (void) Create((void *)data, wxBITMAP_TYPE_XPM_DATA, 0, 0, 0);
+ return new wxBitmapRefData;
}
-*/
-bool wxBitmap::Create(int w, int h, int d)
+wxObjectRefData *wxBitmap::CloneRefData(const wxObjectRefData *data) const
{
- UnRef();
-
- m_refData = new wxBitmapRefData;
-
- M_BITMAPDATA->m_width = w;
- M_BITMAPDATA->m_height = h;
- M_BITMAPDATA->m_depth = d;
-
- /* TODO: create new bitmap */
-
- return M_BITMAPDATA->m_ok;
+ return new wxBitmapRefData(*(wxBitmapRefData*)data);
}
-bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
+WX_NSBitmapImageRep wxBitmap::GetNSBitmapImageRep()
{
- UnRef();
-
- m_refData = new wxBitmapRefData;
-
- wxBitmapHandler *handler = FindHandler(type);
-
- if ( handler == NULL ) {
- wxLogWarning("no bitmap handler for type %d defined.", type);
-
- return FALSE;
- }
-
- return handler->LoadFile(this, filename, type, -1, -1);
+ if(!M_BITMAPDATA)
+ return NULL;
+ return M_BITMAPDATA->m_cocoaNSBitmapImageRep;
}
-bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
+WX_NSImage wxBitmap::GetNSImage(bool useMask) const
{
- UnRef();
-
- m_refData = new wxBitmapRefData;
-
- wxBitmapHandler *handler = FindHandler(type);
-
- if ( handler == NULL ) {
- wxLogWarning("no bitmap handler for type %d defined.", type);
-
- return FALSE;
+ 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 handler->Create(this, data, type, width, height, depth);
+ return nsimage;
}
-bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type, const wxPalette *palette) const
+void wxBitmap::SetNSBitmapImageRep(WX_NSBitmapImageRep bitmapImageRep)
{
- wxBitmapHandler *handler = FindHandler(type);
-
- if ( handler == NULL ) {
- wxLogWarning("no bitmap handler for type %d defined.", type);
-
- return FALSE;
- }
-
- return handler->SaveFile(this, filename, type, palette);
+ if(!M_BITMAPDATA)
+ return;
+ // NOTE: No checking is done to make sure width/height agree
+ [bitmapImageRep retain];
+ [M_BITMAPDATA->m_cocoaNSBitmapImageRep release];
+ M_BITMAPDATA->m_cocoaNSBitmapImageRep = bitmapImageRep;
}
void wxBitmap::SetWidth(int w)
M_BITMAPDATA->m_bitmapMask = mask ;
}
-/*
- * wxMask
- */
-
-wxMask::wxMask()
+bool wxBitmap::IsOk() const
{
-/* TODO
- m_maskBitmap = 0;
-*/
+ return m_refData && M_BITMAPDATA->m_ok;
}
-// Construct a mask from a bitmap and a colour indicating
-// the transparent area
-wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
+wxPalette* wxBitmap::GetPalette() const
{
-/* TODO
- m_maskBitmap = 0;
-*/
- Create(bitmap, colour);
+ if(!m_refData)
+ return NULL;
+ return &M_BITMAPDATA->m_bitmapPalette;
}
-// Construct a mask from a bitmap and a palette index indicating
-// the transparent area
-wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
+wxMask* wxBitmap::GetMask() const
{
-/* TODO
- m_maskBitmap = 0;
-*/
-
- Create(bitmap, paletteIndex);
+ if(!m_refData)
+ return NULL;
+ return M_BITMAPDATA->m_bitmapMask;
}
-// Construct a mask from a mono bitmap (copies the bitmap).
-wxMask::wxMask(const wxBitmap& bitmap)
+int wxBitmap::GetDepth() const
{
-/* TODO
- m_maskBitmap = 0;
-*/
-
- Create(bitmap);
+ if(!m_refData)
+ return 0;
+ return M_BITMAPDATA->m_depth;
}
-wxMask::~wxMask()
+int wxBitmap::GetWidth() const
{
-// TODO: delete mask bitmap
+ if(!m_refData)
+ return 0;
+ return M_BITMAPDATA->m_width;
}
-// Create a mask from a mono bitmap (copies the bitmap).
-bool wxMask::Create(const wxBitmap& bitmap)
+int wxBitmap::GetHeight() const
{
-// TODO
- return FALSE;
+ if(!m_refData)
+ return 0;
+ return M_BITMAPDATA->m_height;
}
-// Create a mask from a bitmap and a palette index indicating
-// the transparent area
-bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
+bool wxBitmap::Create(int w, int h, int d)
{
-// TODO
- return FALSE;
+ UnRef();
+
+ m_refData = new wxBitmapRefData;
+
+ M_BITMAPDATA->m_width = w;
+ M_BITMAPDATA->m_height = h;
+ M_BITMAPDATA->m_depth = d;
+
+ /* TODO: create new bitmap */
+ M_BITMAPDATA->m_cocoaNSBitmapImageRep = [[NSBitmapImageRep alloc]
+ initWithBitmapDataPlanes: NULL
+ pixelsWide: w
+ pixelsHigh: h
+ bitsPerSample: 8
+ samplesPerPixel: 3
+ hasAlpha: NO
+ isPlanar: NO
+ colorSpaceName: NSCalibratedRGBColorSpace
+ bytesPerRow: 0 // NOTE: Contrary to Apple documentation Mac OS
+ // 10.4 will add padding bytes when 0 is used here
+ bitsPerPixel: 0];
+
+ 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_bitmapMask = NULL;
+
+ return M_BITMAPDATA->m_ok;
}
-// Create a mask from a bitmap and a colour indicating
-// the transparent area
-bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
+bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
{
-// TODO
- return FALSE;
+ wxAutoNSAutoreleasePool pool;
+ UnRef();
+
+ m_refData = new wxBitmapRefData;
+
+ NSBitmapImageRep *imageRep = [NSBitmapImageRep
+ imageRepWithContentsOfFile:wxNSStringWithWxString(filename)];
+
+ if(imageRep)
+ {
+ M_BITMAPDATA->m_width = [imageRep pixelsWide];
+ M_BITMAPDATA->m_height = [imageRep pixelsHigh];
+ M_BITMAPDATA->m_depth = 24; // FIXME
+ M_BITMAPDATA->m_ok = true;
+ M_BITMAPDATA->m_numColors = 0;
+ M_BITMAPDATA->m_quality = 0;
+ M_BITMAPDATA->m_cocoaNSBitmapImageRep = [imageRep retain];
+ M_BITMAPDATA->m_bitmapMask = NULL;
+ return true;
+ }
+ wxImage image;
+ if(!image.LoadFile(filename,type))
+ return false;
+ if(!image.Ok())
+ return false;
+ *this = wxBitmap(image);
+ return true;
}
-/*
- * wxBitmapHandler
- */
+bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)
+{
+ UnRef();
+
+ m_refData = new wxBitmapRefData;
-IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
+ return false;
+}
-wxBitmapHandler::~wxBitmapHandler()
+bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type, const wxPalette *palette) const
{
+ return false;
}
-bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
+bool wxBitmap::CopyFromIcon(const wxIcon& icon)
{
- return FALSE;
+ 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];
+ [icon.GetNSImage() unlockFocus];
+ if(!newBitmapRep)
+ return false;
+ m_refData = new wxBitmapRefData;
+ M_BITMAPDATA->m_cocoaNSBitmapImageRep = 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;
}
-bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long type,
- int desiredWidth, int desiredHeight)
+wxBitmap wxBitmap::GetSubBitmap(wxRect const&) const
{
- return FALSE;
+ return wxNullBitmap;
}
-bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
+wxImage wxBitmap::ConvertToImage() const
{
- return FALSE;
+ 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;
}
-/*
- * Standard handlers
- */
+bool wxBitmap::CreateFromImage(const wxImage& image, int depth)
+{
+ UnRef();
-/* TODO: bitmap handlers, a bit like this:
-class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler
+ wxCHECK_MSG(image.Ok(), false, wxT("invalid image"));
+ wxCHECK_MSG(depth == -1 || depth == 1, false, wxT("invalid bitmap depth"));
+
+ m_refData = new wxBitmapRefData();
+
+ M_BITMAPDATA->m_width = image.GetWidth();
+ M_BITMAPDATA->m_height = image.GetHeight();
+ NSBitmapImageRep *bitmapImage = [[NSBitmapImageRep alloc]
+ initWithBitmapDataPlanes: NULL
+ pixelsWide: image.GetWidth()
+ pixelsHigh: image.GetHeight()
+ bitsPerSample: 8
+ samplesPerPixel: 3
+ hasAlpha: NO
+ isPlanar: NO
+ colorSpaceName: NSCalibratedRGBColorSpace
+ bytesPerRow: image.GetWidth()*3
+ bitsPerPixel: 0];
+
+ // 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
+ M_BITMAPDATA->m_depth = 24;
+ M_BITMAPDATA->m_ok = true;
+ M_BITMAPDATA->m_numColors = 0;
+ M_BITMAPDATA->m_quality = 0;
+ M_BITMAPDATA->m_cocoaNSBitmapImageRep = bitmapImage;
+ M_BITMAPDATA->m_bitmapMask = new wxMask(*this,wxColour(image.GetMaskRed(),image.GetMaskGreen(),image.GetMaskBlue()));
+ return true;
+}
+
+void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
{
- DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler)
-public:
- inline wxBMPResourceHandler()
+ if(!Ok())
+ return NULL;
+
+ NSBitmapImageRep *bitmapRep = M_BITMAPDATA->m_cocoaNSBitmapImageRep;
+ if(!bitmapRep)
+ return NULL;
+
+ if([bitmapRep bitsPerPixel]!=bpp)
{
- m_name = "Windows bitmap resource";
- m_extension = "";
- m_type = wxBITMAP_TYPE_BMP_RESOURCE;
- };
+ 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];
- virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
- int desiredWidth, int desiredHeight);
-};
-IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler)
-*/
+ // 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::InitStandardHandlers()
-{
-/* TODO: initialize all standard bitmap or derive class handlers here.
- AddHandler(new wxBMPResourceHandler);
- AddHandler(new wxBMPFileHandler);
- AddHandler(new wxXPMFileHandler);
- AddHandler(new wxXPMDataHandler);
- AddHandler(new wxICOResourceHandler);
- AddHandler(new wxICOFileHandler);
-*/
+void wxBitmap::UngetRawData(wxPixelDataBase& data)
+{ // TODO
}
-bool wxBitmap::CopyFromIcon(const wxIcon& icno)
-{
- return false;
+void wxBitmap::UseAlpha()
+{ // TODO
}
-wxPalette* wxBitmap::GetPalette() const
+// ========================================================================
+// wxMask
+// ========================================================================
+
+IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
+
+wxMask::wxMask()
{
- return NULL;
+ m_cocoaNSBitmapImageRep = nil;
}
-wxBitmap wxBitmap::GetSubBitmap(wxRect const&) const
+// Construct a mask from a bitmap and a colour indicating
+// the transparent area
+wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
{
- return wxNullBitmap;
+ m_cocoaNSBitmapImageRep = nil;
+ Create(bitmap, colour);
}
-wxImage wxBitmap::ConvertToImage() const
+// Construct a mask from a bitmap and a palette index indicating
+// the transparent area
+wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
{
- return wxNullImage;
+ m_cocoaNSBitmapImageRep = nil;
+
+ Create(bitmap, paletteIndex);
}
-bool wxBitmap::Ok() const
+// Construct a mask from a mono bitmap (copies the bitmap).
+wxMask::wxMask(const wxBitmap& bitmap)
{
- return FALSE;
+ m_cocoaNSBitmapImageRep = nil;
+
+ Create(bitmap);
}
-wxMask* wxBitmap::GetMask() const
+wxMask::~wxMask()
{
- return NULL;
+ [m_cocoaNSBitmapImageRep release];
}
-int wxBitmap::GetDepth() const
+// Create a mask from a mono bitmap (copies the bitmap).
+bool wxMask::Create(const wxBitmap& bitmap)
{
- return 0;
+// TODO
+ return FALSE;
}
-int wxBitmap::GetWidth() const
+// Create a mask from a bitmap and a palette index indicating
+// the transparent area
+bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
{
- return 0;
+// TODO
+ return FALSE;
}
-int wxBitmap::GetHeight() const
+template <typename PixelData>
+static bool wxMask_CreateFromBitmapData(PixelData srcData, const wxColour& colour, unsigned char *dstData)
{
- return 0;
+ 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;
}
-
-bool wxBitmap::CreateFromXpm(const char **)
+// Create a mask from a bitmap and a colour indicating
+// the transparent area
+bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
{
- 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")); }
-// vim:sts=4:sw=4:syn=cpp:et
+ // maskRep was autoreleased in case we had to exit quickly
+ m_cocoaNSBitmapImageRep = [maskRep retain];
+ return true;
+}
projects / wxWidgets.git / blobdiff