#pragma implementation "image.h"
#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
#include "wx/image.h"
+#include "wx/bitmap.h"
#include "wx/debug.h"
#include "wx/log.h"
+#include "wx/app.h"
+#if wxUSE_LIBPNG
#include "../png/png.h"
+#endif
+#if wxUSE_LIBJPEG
+extern "C" {
+#include <jpeglib.h>
+}
+#endif
+#include "wx/filefn.h"
+#include "wx/wfstream.h"
+#include "wx/intl.h"
+#include "wx/module.h"
+
+#ifdef __SALFORDC__
+#ifdef FAR
+#undef FAR
+#endif
+#endif
+
+#ifdef __WXMSW__
+#include <windows.h>
+#endif
//-----------------------------------------------------------------------------
// wxImage
class wxImageRefData: public wxObjectRefData
{
- public:
-
+
+public:
wxImageRefData(void);
~wxImageRefData(void);
-
+
int m_width;
int m_height;
unsigned char *m_data;
wxImageRefData::wxImageRefData(void)
{
- m_width = 0;
- m_height = 0;
- m_data = (unsigned char*) NULL;
- m_ok = FALSE;
- m_maskRed = 0;
- m_maskGreen = 0;
- m_maskBlue = 0;
- m_hasMask = FALSE;
+ m_width = 0;
+ m_height = 0;
+ m_data = (unsigned char*) NULL;
+ m_ok = FALSE;
+ m_maskRed = 0;
+ m_maskGreen = 0;
+ m_maskBlue = 0;
+ m_hasMask = FALSE;
}
wxImageRefData::~wxImageRefData(void)
{
- if (m_data) free( m_data );
+ if (m_data) free( m_data );
}
wxList wxImage::sm_handlers;
wxImage::wxImage( int width, int height )
{
- Create( width, height );
+ Create( width, height );
}
wxImage::wxImage( const wxString& name, long type )
{
- LoadFile( name, type );
+ LoadFile( name, type );
}
-wxImage::wxImage( const wxImage& image )
-{
- Ref(image);
+#if wxUSE_STREAMS
+wxImage::wxImage( wxInputStream& stream, long type )
+{
+ LoadFile( stream, type );
+}
+#endif // wxUSE_STREAMS
+
+wxImage::wxImage( const wxImage& image )
+{
+ Ref(image);
}
-wxImage::wxImage( const wxImage* image )
-{
- if (image) Ref(*image);
+wxImage::wxImage( const wxImage* image )
+{
+ if (image) Ref(*image);
}
void wxImage::Create( int width, int height )
{
- m_refData = new wxImageRefData();
-
- M_IMGDATA->m_data = (unsigned char *) malloc( width*height*3 );
- if (M_IMGDATA->m_data)
- {
- for (int l = 0; l < width*height*3; l++) M_IMGDATA->m_data[l] = 0;
-
- M_IMGDATA->m_width = width;
- M_IMGDATA->m_height = height;
- M_IMGDATA->m_ok = TRUE;
- }
- else
- {
- UnRef();
- }
+ m_refData = new wxImageRefData();
+
+ M_IMGDATA->m_data = (unsigned char *) malloc( width*height*3 );
+ if (M_IMGDATA->m_data)
+ {
+ for (int l = 0; l < width*height*3; l++) M_IMGDATA->m_data[l] = 0;
+
+ M_IMGDATA->m_width = width;
+ M_IMGDATA->m_height = height;
+ M_IMGDATA->m_ok = TRUE;
+ }
+ else
+ {
+ UnRef();
+ }
}
void wxImage::Destroy()
{
- UnRef();
+ UnRef();
+}
+
+wxImage wxImage::Scale( int width, int height )
+{
+ wxImage image;
+
+ wxCHECK_MSG( Ok(), image, "invlaid image" );
+
+ wxCHECK_MSG( (width > 0) && (height > 0), image, "invalid image size" );
+
+ image.Create( width, height );
+
+ char unsigned *data = image.GetData();
+
+ wxCHECK_MSG( data, image, "unable to create image" );
+
+ if (M_IMGDATA->m_hasMask)
+ image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+
+ long old_height = M_IMGDATA->m_height;
+ long old_width = M_IMGDATA->m_width;
+
+ char unsigned *source_data = M_IMGDATA->m_data;
+ char unsigned *target_data = data;
+
+ for (long j = 0; j < height; j++)
+ {
+ long y_offset = (j * old_height / height) * old_width;
+
+ for (long i = 0; i < width; i++)
+ {
+ memcpy( target_data,
+ source_data + 3*(y_offset + ((i * old_width )/ width)),
+ 3 );
+ target_data += 3;
+ }
+ }
+
+ return image;
+}
+
+void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b )
+{
+ wxCHECK_RET( Ok(), "invalid image" );
+
+ int w = M_IMGDATA->m_width;
+ int h = M_IMGDATA->m_height;
+
+ wxCHECK_RET( (x>=0) && (y>=0) && (x<w) && (y<h), "invalid image index" );
+
+ long pos = (y * w + x) * 3;
+
+ M_IMGDATA->m_data[ pos ] = r;
+ M_IMGDATA->m_data[ pos+1 ] = g;
+ M_IMGDATA->m_data[ pos+2 ] = b;
+}
+
+unsigned char wxImage::GetRed( int x, int y )
+{
+ wxCHECK_MSG( Ok(), 0, "invalid image" );
+
+ int w = M_IMGDATA->m_width;
+ int h = M_IMGDATA->m_height;
+
+ wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, "invalid image index" );
+
+ long pos = (y * w + x) * 3;
+
+ return M_IMGDATA->m_data[pos];
+}
+
+unsigned char wxImage::GetGreen( int x, int y )
+{
+ wxCHECK_MSG( Ok(), 0, "invalid image" );
+
+ int w = M_IMGDATA->m_width;
+ int h = M_IMGDATA->m_height;
+
+ wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, "invalid image index" );
+
+ long pos = (y * w + x) * 3;
+
+ return M_IMGDATA->m_data[pos+1];
+}
+
+unsigned char wxImage::GetBlue( int x, int y )
+{
+ wxCHECK_MSG( Ok(), 0, "invalid image" );
+
+ int w = M_IMGDATA->m_width;
+ int h = M_IMGDATA->m_height;
+
+ wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, "invalid image index" );
+
+ long pos = (y * w + x) * 3;
+
+ return M_IMGDATA->m_data[pos+2];
}
-bool wxImage::Ok() const
-{
- return (M_IMGDATA && M_IMGDATA->m_ok);
+bool wxImage::Ok() const
+{
+ return (M_IMGDATA && M_IMGDATA->m_ok);
}
char unsigned *wxImage::GetData() const
{
- if (!Ok()) return (char unsigned *)NULL;
-
- return M_IMGDATA->m_data;
+ wxCHECK_MSG( Ok(), (char unsigned *)NULL, "invalid image" );
+
+ return M_IMGDATA->m_data;
}
void wxImage::SetData( char unsigned *WXUNUSED(data) )
{
+ wxCHECK_RET( Ok(), "invalid image" );
}
void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b )
{
- if (!Ok()) return;
-
- M_IMGDATA->m_maskRed = r;
- M_IMGDATA->m_maskGreen = g;
- M_IMGDATA->m_maskBlue = b;
- M_IMGDATA->m_hasMask = TRUE;
+ wxCHECK_RET( Ok(), "invalid image" );
+
+ M_IMGDATA->m_maskRed = r;
+ M_IMGDATA->m_maskGreen = g;
+ M_IMGDATA->m_maskBlue = b;
+ M_IMGDATA->m_hasMask = TRUE;
}
unsigned char wxImage::GetMaskRed() const
{
- if (!Ok()) return 0;
-
- return M_IMGDATA->m_maskRed;
+ wxCHECK_MSG( Ok(), 0, "invalid image" );
+
+ return M_IMGDATA->m_maskRed;
}
unsigned char wxImage::GetMaskGreen() const
{
- if (!Ok()) return 0;
-
- return M_IMGDATA->m_maskGreen;
+ wxCHECK_MSG( Ok(), 0, "invalid image" );
+
+ return M_IMGDATA->m_maskGreen;
}
unsigned char wxImage::GetMaskBlue() const
{
- if (!Ok()) return 0;
-
- return M_IMGDATA->m_maskBlue;
+ wxCHECK_MSG( Ok(), 0, "invalid image" );
+
+ return M_IMGDATA->m_maskBlue;
}
-
+
void wxImage::SetMask( bool mask )
{
- if (!Ok()) return;
-
- M_IMGDATA->m_hasMask = mask;
+ wxCHECK_RET( Ok(), "invalid image" );
+
+ M_IMGDATA->m_hasMask = mask;
}
bool wxImage::HasMask() const
{
- if (!Ok()) return FALSE;
-
- return M_IMGDATA->m_hasMask;
+ wxCHECK_MSG( Ok(), FALSE, "invalid image" );
+
+ return M_IMGDATA->m_hasMask;
}
-int wxImage::GetWidth() const
-{
- return (M_IMGDATA ? M_IMGDATA->m_width : 0);
+int wxImage::GetWidth() const
+{
+ wxCHECK_MSG( Ok(), 0, "invalid image" );
+
+ return M_IMGDATA->m_width;
}
-int wxImage::GetHeight() const
-{
- return (M_IMGDATA ? M_IMGDATA->m_height : 0);
+int wxImage::GetHeight() const
+{
+ wxCHECK_MSG( Ok(), 0, "invalid image" );
+
+ return M_IMGDATA->m_height;
}
bool wxImage::LoadFile( const wxString& filename, long type )
{
- UnRef();
-
- m_refData = new wxImageRefData;
-
- wxImageHandler *handler = FindHandler(type);
-
- if (handler == NULL)
- {
- wxLogWarning( "No image handler for type %d defined.", type );
-
+#if wxUSE_STREAMS
+ if (wxFileExists(filename))
+ {
+ wxFileInputStream stream(filename);
+ return LoadFile(stream, type);
+ }
+
+ else {
+ wxLogError( "Can't load image from file '%s': file does not exist.", filename.c_str() );
+
+ return FALSE;
+ }
+#else // !wxUSE_STREAMS
return FALSE;
- }
-
- return handler->LoadFile( this, filename );
+#endif // wxUSE_STREAMS
}
bool wxImage::SaveFile( const wxString& filename, int type )
{
- wxImageHandler *handler = FindHandler(type);
-
- if (handler == NULL)
- {
- wxLogWarning( "No image handler for type %d defined.", type );
+#if wxUSE_STREAMS
+ wxFileOutputStream stream(filename);
+
+ if ( stream.LastError() == wxStream_NOERROR )
+ return SaveFile(stream, type);
+ else
+#endif // wxUSE_STREAMS
+ return FALSE;
+}
- return FALSE;
- }
+#if wxUSE_STREAMS
+bool wxImage::LoadFile( wxInputStream& stream, long type )
+{
+ UnRef();
+
+ m_refData = new wxImageRefData;
+
+ wxImageHandler *handler = FindHandler(type);
+
+ if (handler == NULL)
+ {
+ wxLogWarning( "No image handler for type %d defined.", type );
+
+ return FALSE;
+ }
+
+ return handler->LoadFile( this, stream );
+}
- return handler->SaveFile( this, filename );
+bool wxImage::SaveFile( wxOutputStream& stream, int type )
+{
+ wxCHECK_MSG( Ok(), FALSE, "invalid image" );
+
+ wxImageHandler *handler = FindHandler(type);
+
+ if (handler == NULL)
+ {
+ wxLogWarning( "No image handler for type %d defined.", type );
+
+ return FALSE;
+ }
+
+ return handler->SaveFile( this, stream );
}
+#endif // wxUSE_STREAMS
void wxImage::AddHandler( wxImageHandler *handler )
{
+ // make sure that the memory will be freed at the program end
+ sm_handlers.DeleteContents(TRUE);
+
sm_handlers.Append( handler );
}
void wxImage::InsertHandler( wxImageHandler *handler )
{
+ // make sure that the memory will be freed at the program end
+ sm_handlers.DeleteContents(TRUE);
+
sm_handlers.Insert( handler );
}
bool wxImage::RemoveHandler( const wxString& name )
{
- wxImageHandler *handler = FindHandler(name);
- if (handler)
- {
- sm_handlers.DeleteObject(handler);
- return TRUE;
- }
- else
- return FALSE;
+ wxImageHandler *handler = FindHandler(name);
+ if (handler)
+ {
+ sm_handlers.DeleteObject(handler);
+ return TRUE;
+ }
+ else
+ return FALSE;
}
wxImageHandler *wxImage::FindHandler( const wxString& name )
{
- wxNode *node = sm_handlers.First();
- while (node)
- {
- wxImageHandler *handler = (wxImageHandler*)node->Data();
- if (handler->GetName() == name) return handler;
- node = node->Next();
- }
- return (wxImageHandler *)NULL;
+ wxNode *node = sm_handlers.First();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler*)node->Data();
+ if (handler->GetName().Cmp(name) == 0) return handler;
+
+ node = node->Next();
+ }
+ return (wxImageHandler *)NULL;
}
wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType )
{
- wxNode *node = sm_handlers.First();
- while (node)
- {
- wxImageHandler *handler = (wxImageHandler*)node->Data();
- if ( handler->GetExtension() == extension &&
- (bitmapType == -1 || handler->GetType() == bitmapType) )
- return handler;
- node = node->Next();
- }
- return (wxImageHandler*)NULL;
+ wxNode *node = sm_handlers.First();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler*)node->Data();
+ if ( (handler->GetExtension().Cmp(extension) == 0) &&
+ (bitmapType == -1 || handler->GetType() == bitmapType) )
+ return handler;
+ node = node->Next();
+ }
+ return (wxImageHandler*)NULL;
}
wxImageHandler *wxImage::FindHandler( long bitmapType )
{
- wxNode *node = sm_handlers.First();
- while (node)
- {
- wxImageHandler *handler = (wxImageHandler *)node->Data();
- if (handler->GetType() == bitmapType) return handler;
- node = node->Next();
- }
- return NULL;
+ wxNode *node = sm_handlers.First();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler *)node->Data();
+ if (handler->GetType() == bitmapType) return handler;
+ node = node->Next();
+ }
+ return NULL;
+}
+
+void wxImage::InitStandardHandlers()
+{
+ AddHandler( new wxBMPHandler );
+#if wxUSE_LIBPNG
+ AddHandler( new wxPNGHandler );
+#endif
}
void wxImage::CleanUpHandlers()
{
- wxNode *node = sm_handlers.First();
- while (node)
- {
- wxImageHandler *handler = (wxImageHandler *)node->Data();
- wxNode *next = node->Next();
- delete handler;
- delete node;
- node = next;
- }
+ wxNode *node = sm_handlers.First();
+ while (node)
+ {
+ wxImageHandler *handler = (wxImageHandler *)node->Data();
+ wxNode *next = node->Next();
+ delete handler;
+ delete node;
+ node = next;
+ }
}
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxImageHandler,wxObject)
#endif
-bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), const wxString& WXUNUSED(name) )
+#if wxUSE_STREAMS
+bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream) )
{
- return FALSE;
+ return FALSE;
}
-bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), const wxString& WXUNUSED(name) )
+bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream) )
{
- return FALSE;
+ return FALSE;
}
+#endif // wxUSE_STREAMS
//-----------------------------------------------------------------------------
// wxPNGHandler
//-----------------------------------------------------------------------------
+#if wxUSE_LIBPNG
+
#if !USE_SHARED_LIBRARIES
IMPLEMENT_DYNAMIC_CLASS(wxPNGHandler,wxImageHandler)
#endif
-
-bool wxPNGHandler::LoadFile( wxImage *image, const wxString& name )
-{
- FILE *f;
- png_structp png_ptr;
- png_infop info_ptr;
- unsigned char *ptr, **lines, *ptr2;
- int transp,bit_depth,color_type,interlace_type;
- png_uint_32 width, height;
-
- image->Destroy();
-
- transp = 0;
- png_ptr = png_create_read_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL );
- if (!png_ptr) return FALSE;
-
- info_ptr = png_create_info_struct( png_ptr );
- if (!info_ptr)
- {
- png_destroy_read_struct( &png_ptr, NULL, NULL );
- return FALSE;
- }
-
- if (setjmp(png_ptr->jmpbuf))
- {
- png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
- return FALSE;
- }
-
- if (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- {
- png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
- return FALSE;
- }
-
- f = fopen( name, "rb" );
- png_init_io( png_ptr, f );
-
- png_read_info( png_ptr, info_ptr );
- png_get_IHDR( png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, NULL, NULL );
-
- if (color_type == PNG_COLOR_TYPE_PALETTE) png_set_expand( png_ptr );
-
- png_set_strip_16( png_ptr );
- png_set_packing( png_ptr );
- if (png_get_valid( png_ptr, info_ptr, PNG_INFO_tRNS)) png_set_expand( png_ptr );
- png_set_filler( png_ptr, 0xff, PNG_FILLER_AFTER );
-
- image->Create( width, height );
-
- if (!image->Ok())
- {
- png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
- return FALSE;
- }
-
- lines = (unsigned char **)malloc( height * sizeof(unsigned char *) );
- if (lines == NULL)
- {
- image->Destroy();
- png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
- return FALSE;
- }
-
- for (unsigned int i = 0; i < height; i++)
- {
- if ((lines[i] = (unsigned char *)malloc(width * (sizeof(unsigned char) * 4))) == NULL)
- {
- image->Destroy();
- for (unsigned int n = 0; n < i; n++) free( lines[n] );
- free( lines );
- png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
- return FALSE;
- }
- }
-
- png_read_image( png_ptr, lines );
- png_destroy_read_struct( &png_ptr, &info_ptr, NULL );
- ptr = image->GetData();
- if ((color_type == PNG_COLOR_TYPE_GRAY) ||
- (color_type == PNG_COLOR_TYPE_GRAY_ALPHA))
- {
- for (unsigned int y = 0; y < height; y++)
- {
- ptr2 = lines[y];
- for (unsigned int x = 0; x < width; x++)
- {
- unsigned char r = *ptr2++;
- unsigned char a = *ptr2++;
- if (a < 128)
- {
- *ptr++ = 255;
- *ptr++ = 0;
- *ptr++ = 255;
- transp = 1;
- }
- else
- {
- *ptr++ = r;
- *ptr++ = r;
- *ptr++ = r;
- }
- }
- }
- }
- else
- {
- for (unsigned int y = 0; y < height; y++)
- {
- ptr2 = lines[y];
- for (unsigned int x = 0; x < width; x++)
- {
- unsigned char r = *ptr2++;
- unsigned char g = *ptr2++;
- unsigned char b = *ptr2++;
- unsigned char a = *ptr2++;
- if (a < 128)
- {
- *ptr++ = 255;
- *ptr++ = 0;
- *ptr++ = 255;
- transp = 1;
- }
- else
- {
- if ((r == 255) && (g == 0) && (b == 255)) r = 254;
- *ptr++ = r;
- *ptr++ = g;
- *ptr++ = b;
- }
- }
- }
- }
- for (unsigned int i = 0; i < height; i++) free( lines[i] );
- free( lines );
- if (transp)
- image->SetMaskColour( 255, 0, 255 );
- else
- image->SetMask( FALSE );
-
- return TRUE;
+
+
+#if wxUSE_STREAMS
+static void _PNG_stream_reader( png_structp png_ptr, png_bytep data, png_size_t length )
+{
+ ((wxInputStream*) png_get_io_ptr( png_ptr )) -> Read(data, length);
}
+static void _PNG_stream_writer( png_structp png_ptr, png_bytep data, png_size_t length )
+{
+ ((wxOutputStream*) png_get_io_ptr( png_ptr )) -> Write(data, length);
+}
-bool wxPNGHandler::SaveFile( wxImage *image, const wxString& name )
+bool wxPNGHandler::LoadFile( wxImage *image, wxInputStream& stream )
{
- FILE *f = fopen( name, "wb" );
- if (f)
- {
- png_structp png_ptr = png_create_write_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
- if (!png_ptr)
- {
- fclose( f );
- return FALSE;
+ // VZ: as this function uses setjmp() the only fool proof error handling
+ // method is to use goto (setjmp is not really C++ dtors friendly...)
+
+ unsigned char **lines = (unsigned char **) NULL;
+ unsigned int i;
+ png_infop info_ptr = (png_infop) NULL;
+
+ image->Destroy();
+
+ png_structp png_ptr = png_create_read_struct( PNG_LIBPNG_VER_STRING,
+ (voidp) NULL,
+ (png_error_ptr) NULL,
+ (png_error_ptr) NULL );
+ if (!png_ptr)
+ goto error;
+
+ info_ptr = png_create_info_struct( png_ptr );
+ if (!info_ptr)
+ goto error;
+
+ if (setjmp(png_ptr->jmpbuf))
+ goto error;
+
+ if (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+ goto error;
+
+ png_set_read_fn( png_ptr, &stream, _PNG_stream_reader);
+
+ png_uint_32 width,height;
+ int bit_depth,color_type,interlace_type;
+
+ png_read_info( png_ptr, info_ptr );
+ png_get_IHDR( png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, (int*) NULL, (int*) NULL );
+
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ png_set_expand( png_ptr );
+
+ png_set_strip_16( png_ptr );
+ png_set_packing( png_ptr );
+ if (png_get_valid( png_ptr, info_ptr, PNG_INFO_tRNS))
+ png_set_expand( png_ptr );
+ png_set_filler( png_ptr, 0xff, PNG_FILLER_AFTER );
+
+ image->Create( width, height );
+
+ if (!image->Ok())
+ goto error;
+
+ lines = (unsigned char **)malloc( height * sizeof(unsigned char *) );
+ if (lines == NULL)
+ goto error;
+
+ for (i = 0; i < height; i++)
+ {
+ if ((lines[i] = (unsigned char *)malloc(width * (sizeof(unsigned char) * 4))) == NULL)
+ {
+ for ( unsigned int n = 0; n < i; n++ )
+ free( lines[n] );
+ goto error;
+ }
}
- png_infop info_ptr = png_create_info_struct(png_ptr);
- if (info_ptr == NULL)
+ // loaded successfully!
{
- fclose(f);
- png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
- return FALSE;
+ int transp = 0;
+ png_read_image( png_ptr, lines );
+ png_destroy_read_struct( &png_ptr, &info_ptr, (png_infopp) NULL );
+ unsigned char *ptr = image->GetData();
+ if ((color_type == PNG_COLOR_TYPE_GRAY) ||
+ (color_type == PNG_COLOR_TYPE_GRAY_ALPHA))
+ {
+ for (unsigned int y = 0; y < height; y++)
+ {
+ unsigned char *ptr2 = lines[y];
+ for (unsigned int x = 0; x < width; x++)
+ {
+ unsigned char r = *ptr2++;
+ unsigned char a = *ptr2++;
+ if (a < 128)
+ {
+ *ptr++ = 255;
+ *ptr++ = 0;
+ *ptr++ = 255;
+ transp = 1;
+ }
+ else
+ {
+ *ptr++ = r;
+ *ptr++ = r;
+ *ptr++ = r;
+ }
+ }
+ }
+ }
+ else
+ {
+ for (unsigned int y = 0; y < height; y++)
+ {
+ unsigned char *ptr2 = lines[y];
+ for (unsigned int x = 0; x < width; x++)
+ {
+ unsigned char r = *ptr2++;
+ unsigned char g = *ptr2++;
+ unsigned char b = *ptr2++;
+ unsigned char a = *ptr2++;
+ if (a < 128)
+ {
+ *ptr++ = 255;
+ *ptr++ = 0;
+ *ptr++ = 255;
+ transp = 1;
+ }
+ else
+ {
+ if ((r == 255) && (g == 0) && (b == 255)) r = 254;
+ *ptr++ = r;
+ *ptr++ = g;
+ *ptr++ = b;
+ }
+ }
+ }
+ }
+
+ for ( unsigned int j = 0; j < height; j++ )
+ free( lines[j] );
+ free( lines );
+
+ if (transp)
+ {
+ image->SetMaskColour( 255, 0, 255 );
+ }
+ else
+ {
+ image->SetMask( FALSE );
+ }
}
- if (setjmp(png_ptr->jmpbuf))
+ return TRUE;
+
+error:
+ wxLogError(_("Couldn't load a PNG image - probably file is corrupted."));
+
+ if ( image->Ok() )
{
- fclose( f );
- png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
- return FALSE;
- }
-
- png_init_io( png_ptr, f );
- png_set_IHDR( png_ptr, info_ptr, image->GetWidth(), image->GetHeight(), 8,
- PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE,
- PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
-
- png_color_8 sig_bit;
- sig_bit.red = 8;
- sig_bit.green = 8;
- sig_bit.blue = 8;
- sig_bit.alpha = 8;
- png_set_sBIT( png_ptr, info_ptr, &sig_bit );
- png_write_info( png_ptr, info_ptr );
- png_set_shift( png_ptr, &sig_bit );
- png_set_packing( png_ptr );
+ image->Destroy();
+ }
- unsigned char *data = (unsigned char *)malloc( image->GetWidth()*4 );
- if (!data)
+ if ( lines )
{
- fclose( f );
- png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
- return FALSE;
+ free( lines );
}
- for (int y = 0; y < image->GetHeight(); y++)
+ if ( png_ptr )
{
- unsigned char *ptr = image->GetData() + (y * image->GetWidth() * 3);
- for (int x = 0; x < image->GetWidth(); x++)
- {
- data[(x << 2) + 0] = *ptr++;
- data[(x << 2) + 1] = *ptr++;
- data[(x << 2) + 2] = *ptr++;
- if ((data[(x << 2) + 0] == image->GetMaskRed()) &&
- (data[(x << 2) + 1] == image->GetMaskGreen()) &&
- (data[(x << 2) + 2] == image->GetMaskBlue()))
- data[(x << 2) + 3] = 0;
- else
- data[(x << 2) + 3] = 255;
- }
- png_bytep row_ptr = data;
- png_write_rows( png_ptr, &row_ptr, 1 );
+ if ( info_ptr )
+ {
+ png_destroy_read_struct( &png_ptr, &info_ptr, (png_infopp) NULL );
+ free(info_ptr);
+ }
+ else
+ png_destroy_read_struct( &png_ptr, (png_infopp) NULL, (png_infopp) NULL );
}
- free(data);
- png_write_end( png_ptr, info_ptr );
- png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
+ return FALSE;
+}
- fclose(f);
- }
- return TRUE;
+
+bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream )
+{
+ {
+ png_structp png_ptr = png_create_write_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if (!png_ptr)
+ {
+ return FALSE;
+ }
+
+ png_infop info_ptr = png_create_info_struct(png_ptr);
+ if (info_ptr == NULL)
+ {
+ png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
+ return FALSE;
+ }
+
+ if (setjmp(png_ptr->jmpbuf))
+ {
+ png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
+ return FALSE;
+ }
+
+ png_set_write_fn( png_ptr, &stream, _PNG_stream_writer, NULL);
+
+ png_set_IHDR( png_ptr, info_ptr, image->GetWidth(), image->GetHeight(), 8,
+ PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE,
+ PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
+
+ png_color_8 sig_bit;
+ sig_bit.red = 8;
+ sig_bit.green = 8;
+ sig_bit.blue = 8;
+ sig_bit.alpha = 8;
+ png_set_sBIT( png_ptr, info_ptr, &sig_bit );
+ png_write_info( png_ptr, info_ptr );
+ png_set_shift( png_ptr, &sig_bit );
+ png_set_packing( png_ptr );
+
+ unsigned char *data = (unsigned char *)malloc( image->GetWidth()*4 );
+ if (!data)
+ {
+ png_destroy_write_struct( &png_ptr, (png_infopp)NULL );
+ return FALSE;
+ }
+
+ for (int y = 0; y < image->GetHeight(); y++)
+ {
+ unsigned char *ptr = image->GetData() + (y * image->GetWidth() * 3);
+ for (int x = 0; x < image->GetWidth(); x++)
+ {
+ data[(x << 2) + 0] = *ptr++;
+ data[(x << 2) + 1] = *ptr++;
+ data[(x << 2) + 2] = *ptr++;
+ if ((data[(x << 2) + 0] == image->GetMaskRed()) &&
+ (data[(x << 2) + 1] == image->GetMaskGreen()) &&
+ (data[(x << 2) + 2] == image->GetMaskBlue()))
+ {
+ data[(x << 2) + 3] = 0;
+ }
+ else
+ {
+ data[(x << 2) + 3] = 255;
+ }
+ }
+ png_bytep row_ptr = data;
+ png_write_rows( png_ptr, &row_ptr, 1 );
+ }
+
+ free(data);
+ png_write_end( png_ptr, info_ptr );
+ png_destroy_write_struct( &png_ptr, (png_infopp)&info_ptr );
+ }
+ return TRUE;
}
+#endif // wxUSE_STREAMS
+
+#endif
+
+// wxUSE_LIBPNG
+
//-----------------------------------------------------------------------------
-// wxBMPHandler
+// wxJPEGHandler
//-----------------------------------------------------------------------------
+#if wxUSE_LIBJPEG
+
#if !USE_SHARED_LIBRARIES
-IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler)
+IMPLEMENT_DYNAMIC_CLASS(wxJPEGHandler,wxImageHandler)
#endif
-
-bool wxBMPHandler::LoadFile( wxImage *image, const wxString& name )
-{
- FILE *file;
- unsigned char *data, *ptr;
- int done, i, bpp, planes, comp, ncolors, line, column,
- linesize, linepos, rshift = 0, gshift = 0, bshift = 0;
- unsigned char byte;
- short int word;
- long int dbuf[4], dword, rmask = 0, gmask = 0, bmask = 0, offset,
- size;
- signed char bbuf[4];
- struct _cmap
- {
- unsigned char r, g, b;
- }
- *cmap = NULL;
-#define BI_RGB 0
-#define BI_RLE8 1
-#define BI_RLE4 2
-#define BI_BITFIELDS 3
+#if wxUSE_STREAMS
- image->Destroy();
- file = fopen(name, "r");
- if (!file)
- return NULL;
+//------------- JPEG Data Source Manager
- done = 0;
- /*
- * Reading the bmp header
- */
+typedef struct {
+ struct jpeg_source_mgr pub; /* public fields */
+
+ JOCTET* buffer; /* start of buffer */
+} my_source_mgr;
+
+typedef my_source_mgr * my_src_ptr;
+
+METHODDEF(void) my_init_source ( j_decompress_ptr cinfo )
+{
+}
+
+METHODDEF(boolean) my_fill_input_buffer ( j_decompress_ptr cinfo )
+{
+ return TRUE;
+}
- fread(&bbuf, 1, 2, file);
+METHODDEF(void) my_skip_input_data ( j_decompress_ptr cinfo, long num_bytes )
+{
+ my_src_ptr src = (my_src_ptr) cinfo->src;
+
+ src->pub.next_input_byte += (size_t) num_bytes;
+ src->pub.bytes_in_buffer -= (size_t) num_bytes;
+}
- fread(dbuf, 4, 4, file);
+METHODDEF(void) my_term_source ( j_decompress_ptr cinfo )
+{
+ my_src_ptr src = (my_src_ptr) cinfo->src;
+
+ free (src->buffer);
+}
- size = dbuf[0];
- offset = dbuf[2];
+void jpeg_wxio_src( j_decompress_ptr cinfo, wxInputStream& infile )
+{
+ my_src_ptr src;
+
+ if (cinfo->src == NULL) { /* first time for this JPEG object? */
+ cinfo->src = (struct jpeg_source_mgr *)
+ (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
+ sizeof(my_source_mgr));
+ src = (my_src_ptr) cinfo->src;
+ }
+ src = (my_src_ptr) cinfo->src;
+ src->pub.bytes_in_buffer = infile.StreamSize(); /* forces fill_input_buffer on first read */
+ src->buffer = (JOCTET *) malloc (infile.StreamSize());
+ src->pub.next_input_byte = src->buffer; /* until buffer loaded */
+ infile.Read(src->buffer, infile.StreamSize());
+
+ src->pub.init_source = my_init_source;
+ src->pub.fill_input_buffer = my_fill_input_buffer;
+ src->pub.skip_input_data = my_skip_input_data;
+ src->pub.resync_to_restart = jpeg_resync_to_restart; /* use default method */
+ src->pub.term_source = my_term_source;
+}
- fread(dbuf, 4, 2, file);
- int width = (int)dbuf[0];
- int height = (int)dbuf[1];
- if (width > 32767)
- {
- fprintf(stderr, "IMLIB ERROR: Image width > 32767 pixels for file\n");
- fclose(file);
- return FALSE;
- }
- if (height > 32767)
- {
- fprintf(stderr, "IMLIB ERROR: Image height > 32767 pixels for file\n");
- fclose(file);
- return FALSE;
- }
- fread(&word, 2, 1, file);
- planes = (int)word;
- fread(&word, 2, 1, file);
- bpp = (int)word;
- if (bpp != 1 && bpp != 4 && bpp != 8 && bpp && 16 && bpp != 24 && bpp != 32)
- {
- fprintf(stderr, "IMLIB ERROR: unknown bitdepth in file\n");
- fclose(file);
- return FALSE;
- }
- fread(dbuf, 4, 4, file);
- comp = (int)dbuf[0];
- if (comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 && comp != BI_BITFIELDS)
- {
- fprintf(stderr, "IMLIB ERROR: unknown encoding in Windows BMP file\n");
- fclose(file);
- return FALSE;
- }
- fread(dbuf, 4, 2, file);
- ncolors = (int)dbuf[0];
- if (ncolors == 0)
- ncolors = 1 << bpp;
- /* some more sanity checks */
- if (((comp == BI_RLE4) && (bpp != 4)) || ((comp == BI_RLE8) && (bpp != 8)) || ((comp == BI_BITFIELDS) && (bpp != 16 && bpp != 32)))
- {
- fprintf(stderr, "IMLIB ERROR: encoding of BMP doesn't match bitdepth\n");
- fclose(file);
- return FALSE;
- }
- if (bpp < 16)
- {
- cmap = (struct _cmap *)malloc(sizeof(struct _cmap) * ncolors);
-
- if (!cmap)
- {
- fprintf(stderr, "IMLIB ERROR: Cannot allocate RAM for color map in BMP file\n");
- fclose(file);
- return FALSE;
- }
- }
- else
- cmap = NULL;
-
- image->Create( width, height );
- ptr = image->GetData();
- if (!ptr)
- {
- fprintf(stderr, "IMLIB ERROR: Cannot allocate RAM for RGB data in file\n");
- fclose(file);
- if (cmap)
- free(cmap);
- return FALSE;
- }
- /*
- * Reading the palette, if it exists.
- */
- if (bpp < 16 && ncolors != 0)
- {
- for (i = 0; i < ncolors; i++)
- {
- fread(bbuf, 1, 4, file);
- cmap[i].b = bbuf[0];
- cmap[i].g = bbuf[1];
- cmap[i].r = bbuf[2];
- }
- }
- else if (bpp == 16 || bpp == 32)
- {
- if (comp == BI_BITFIELDS)
- {
- int bit = 0;
-
- fread(dbuf, 4, 3, file);
- bmask = dbuf[0];
- gmask = dbuf[1];
- rmask = dbuf[2];
- /* find shift amount.. ugly, but i can't think of a better way */
- for (bit = 0; bit < bpp; bit++)
- {
- if (bmask & (1 << bit))
- bshift = bit;
- if (gmask & (1 << bit))
- gshift = bit;
- if (rmask & (1 << bit))
- rshift = bit;
- }
- }
- else if (bpp == 16)
- {
- rmask = 0x7C00;
- gmask = 0x03E0;
- bmask = 0x001F;
- rshift = 10;
- gshift = 5;
- bshift = 0;
- }
- else if (bpp == 32)
- {
- rmask = 0x00FF0000;
- gmask = 0x0000FF00;
- bmask = 0x000000FF;
- rshift = 16;
- gshift = 8;
- bshift = 0;
- }
- }
- /*
- * REading the image data
- */
- fseek(file, offset, SEEK_SET);
- data = ptr;
-
- /* set the whole image to the background color */
- if (bpp < 16 && (comp == BI_RLE4 || comp == BI_RLE8))
- {
- for (i = 0; i < width * height; i++)
- {
- *ptr++ = cmap[0].r;
- *ptr++ = cmap[0].g;
- *ptr++ = cmap[0].b;
- }
- ptr = data;
- }
- line = 0;
- column = 0;
-#define poffset (line * width * 3 + column * 3)
+bool wxJPEGHandler::LoadFile( wxImage *image, wxInputStream& stream )
+{
+ struct jpeg_decompress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+ JSAMPARRAY tempbuf;
+ unsigned char *ptr;
+ unsigned stride;
+
+ image->Destroy();
+ cinfo.err = jpeg_std_error( &jerr );
+ jpeg_create_decompress( &cinfo );
+ jpeg_wxio_src( &cinfo, stream );
+ jpeg_read_header( &cinfo, TRUE );
+ cinfo.out_color_space = JCS_RGB;
+ jpeg_start_decompress( &cinfo );
+
+ image->Create( cinfo.image_width, cinfo.image_height );
+ if (!image->Ok()) {
+ jpeg_finish_decompress( &cinfo );
+ jpeg_destroy_decompress( &cinfo );
+ return FALSE;
+ }
+ image->SetMask( FALSE );
+ ptr = image->GetData();
+ stride = cinfo.output_width * 3;
+ tempbuf = (*cinfo.mem->alloc_sarray)
+ ((j_common_ptr) &cinfo, JPOOL_IMAGE, stride, 1 );
+
+ while ( cinfo.output_scanline < cinfo.output_height ) {
+ jpeg_read_scanlines( &cinfo, tempbuf, 1 );
+ memcpy( ptr, tempbuf[0], stride );
+ ptr += stride;
+ }
+ jpeg_finish_decompress( &cinfo );
+ jpeg_destroy_decompress( &cinfo );
+ return TRUE;
+}
- /*
- * BMPs are stored upside down... hmmmmmmmmmm....
- */
- linesize = ((width * bpp + 31) / 32) * 4;
- for (line = (height - 1); line >= 0; line--)
- {
- linepos = 0;
- for (column = 0; column < width;)
- {
- if (bpp < 16)
- {
- int index;
-
- linepos++;
- byte = getc(file);
- if (bpp == 1)
- {
- int bit = 0;
-
- for (bit = 0; bit < 8; bit++)
- {
- index = ((byte & (0x80 >> bit)) ? 1 : 0);
- ptr[poffset] = cmap[index].r;
- ptr[poffset + 1] = cmap[index].g;
- ptr[poffset + 2] = cmap[index].b;
- column++;
- }
- }
- else if (bpp == 4)
- {
- if (comp == BI_RLE4)
- {
- fprintf(stderr, "can't deal with 4bit encoded yet.\n");
- image->Destroy();
- free(cmap);
- return FALSE;
- }
- else
- {
- int nibble = 0;
-
- for (nibble = 0; nibble < 2; nibble++)
- {
- index = ((byte & (0xF0 >> nibble * 4)) >> (!nibble * 4));
- if (index >= 16)
- index = 15;
- ptr[poffset] = cmap[index].r;
- ptr[poffset + 1] = cmap[index].g;
- ptr[poffset + 2] = cmap[index].b;
- column++;
- }
- }
- }
- else if (bpp == 8)
- {
- if (comp == BI_RLE8)
- {
- unsigned char first;
-
- first = byte;
- byte = getc(file);
- if (first == 0)
- {
- if (byte == 0)
- {
-/* column = width; */
- }
- else if (byte == 1)
- {
- column = width;
- line = -1;
- }
- else if (byte == 2)
- {
- byte = getc(file);
- column += byte;
- linepos = column * bpp / 8;
- byte = getc(file);
- line += byte;
- }
- else
- {
- int absolute = byte;
-
- for (i = 0; i < absolute; i++)
- {
- +linepos++;
- byte = getc(file);
- ptr[poffset] = cmap[byte].r;
- ptr[poffset + 1] = cmap[byte].g;
- ptr[poffset + 2] = cmap[byte].b;
- column++;
- }
- if (absolute & 0x01)
- byte = getc(file);
- }
- }
- else
- {
- for (i = 0; i < first; i++)
- {
- ptr[poffset] = cmap[byte].r;
- ptr[poffset + 1] = cmap[byte].g;
- ptr[poffset + 2] = cmap[byte].b;
- column++;
- linepos++;
- }
- }
- }
- else
- {
- ptr[poffset] = cmap[byte].r;
- ptr[poffset + 1] = cmap[byte].g;
- ptr[poffset + 2] = cmap[byte].b;
- column++;
- linepos += size;
- }
- }
- }
- else if (bpp == 24)
- {
- linepos += fread(&bbuf, 1, 3, file);
- ptr[poffset] = (unsigned char)bbuf[2];
- ptr[poffset + 1] = (unsigned char)bbuf[1];
- ptr[poffset + 2] = (unsigned char)bbuf[0];
- column++;
- }
- else if (bpp == 16)
- {
- unsigned char temp;
-
- linepos += fread(&word, 2, 1, file);
- temp = (word & rmask) >> rshift;
- ptr[poffset] = temp;
- temp = (word & gmask) >> gshift;
- ptr[poffset + 1] = temp;
- temp = (word & bmask) >> gshift;
- ptr[poffset + 2] = temp;
- column++;
- }
- else
- {
- unsigned char temp;
-
- linepos += fread(&dword, 4, 1, file);
- temp = (dword & rmask) >> rshift;
- ptr[poffset] = temp;
- temp = (dword & gmask) >> gshift;
- ptr[poffset + 1] = temp;
- temp = (dword & bmask) >> bshift;
- ptr[poffset + 2] = temp;
- column++;
- }
- }
- while ((linepos < linesize) && (comp != 1) && (comp != 2))
- {
- int temp = fread(&byte, 1, 1, file);
-
- linepos += temp;
- if (!temp)
- break;
- }
- }
- if (cmap) free(cmap);
-
- image->SetMask( FALSE );
-
- fclose(file);
- return TRUE;
+
+
+
+typedef struct {
+ struct jpeg_destination_mgr pub;
+
+ wxOutputStream *stream;
+ JOCTET * buffer;
+} my_destination_mgr;
+
+typedef my_destination_mgr * my_dest_ptr;
+
+#define OUTPUT_BUF_SIZE 4096 /* choose an efficiently fwrite'able size */
+
+METHODDEF(void) init_destination (j_compress_ptr cinfo)
+{
+ my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
+
+ /* Allocate the output buffer --- it will be released when done with image */
+ dest->buffer = (JOCTET *)
+ (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+ OUTPUT_BUF_SIZE * sizeof(JOCTET));
+ dest->pub.next_output_byte = dest->buffer;
+ dest->pub.free_in_buffer = OUTPUT_BUF_SIZE;
+}
+
+METHODDEF(boolean) empty_output_buffer (j_compress_ptr cinfo)
+{
+ my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
+
+ dest->stream->Write(dest->buffer, OUTPUT_BUF_SIZE);
+ dest->pub.next_output_byte = dest->buffer;
+ dest->pub.free_in_buffer = OUTPUT_BUF_SIZE;
+ return TRUE;
+}
+
+METHODDEF(void) term_destination (j_compress_ptr cinfo)
+{
+ my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
+ size_t datacount = OUTPUT_BUF_SIZE - dest->pub.free_in_buffer;
+ /* Write any data remaining in the buffer */
+ if (datacount > 0)
+ dest->stream->Write(dest->buffer, datacount);
+}
+
+GLOBAL(void) jpeg_wxio_dest (j_compress_ptr cinfo, wxOutputStream& outfile)
+{
+ my_dest_ptr dest;
+
+ if (cinfo->dest == NULL) { /* first time for this JPEG object? */
+ cinfo->dest = (struct jpeg_destination_mgr *)
+ (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
+ sizeof(my_destination_mgr));
+ }
+
+ dest = (my_dest_ptr) cinfo->dest;
+ dest->pub.init_destination = init_destination;
+ dest->pub.empty_output_buffer = empty_output_buffer;
+ dest->pub.term_destination = term_destination;
+ dest->stream = &outfile;
}
+
+
+bool wxJPEGHandler::SaveFile( wxImage *image, wxOutputStream& stream )
+{
+ struct jpeg_compress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+ JSAMPROW row_pointer[1]; /* pointer to JSAMPLE row[s] */
+ JSAMPLE *image_buffer;
+ int stride; /* physical row width in image buffer */
+
+ cinfo.err = jpeg_std_error(&jerr);
+ jpeg_create_compress(&cinfo);
+ jpeg_wxio_dest(&cinfo, stream);
+
+ cinfo.image_width = image->GetWidth();
+ cinfo.image_height = image->GetHeight();
+ cinfo.input_components = 3;
+ cinfo.in_color_space = JCS_RGB;
+ jpeg_set_defaults(&cinfo);
+ jpeg_start_compress(&cinfo, TRUE);
+
+ stride = cinfo.image_width * 3; /* JSAMPLEs per row in image_buffer */
+ image_buffer = image->GetData();
+ while (cinfo.next_scanline < cinfo.image_height) {
+ row_pointer[0] = &image_buffer[cinfo.next_scanline * stride];
+ jpeg_write_scanlines( &cinfo, row_pointer, 1 );
+ }
+ jpeg_finish_compress(&cinfo);
+ jpeg_destroy_compress(&cinfo);
+
+ return TRUE;
+}
+#endif // wxUSE_STREAMS
+
+#endif
+
+// wxUSE_LIBJPEG
+
+
+
+//-----------------------------------------------------------------------------
+// wxBMPHandler
+//-----------------------------------------------------------------------------
+
+#if !USE_SHARED_LIBRARIES
+IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler)
+#endif
+
+#if wxUSE_STREAMS
+bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream )
+{
+ unsigned char *data, *ptr;
+ int done, i, bpp, planes, comp, ncolors, line, column,
+ linesize, linepos, rshift = 0, gshift = 0, bshift = 0;
+ unsigned char aByte;
+ short int word;
+ long int dbuf[4], dword, rmask = 0, gmask = 0, bmask = 0, offset,
+ size;
+ off_t start_offset = stream.TellI();
+ signed char bbuf[4];
+ struct _cmap
+ {
+ unsigned char r, g, b;
+ }
+ *cmap = NULL;
+#ifndef BI_RGB
+#define BI_RGB 0
+#define BI_RLE8 1
+#define BI_RLE4 2
+#endif
+
+#ifndef BI_BITFIELDS
+#define BI_BITFIELDS 3
+#endif
+
+ image->Destroy();
+
+ done = 0;
+ /*
+ * Reading the bmp header
+ */
+
+ stream.Read(&bbuf, 2);
+
+ stream.Read(dbuf, 4 * 4);
+
+ size = dbuf[0];
+ offset = dbuf[2];
+
+ stream.Read(dbuf, 4 * 2);
+ int width = (int)dbuf[0];
+ int height = (int)dbuf[1];
+ if (width > 32767)
+ {
+ wxLogError( "Image width > 32767 pixels for file\n" );
+ return FALSE;
+ }
+ if (height > 32767)
+ {
+ wxLogError( "Image height > 32767 pixels for file\n" );
+ return FALSE;
+ }
+ stream.Read(&word, 2);
+ planes = (int)word;
+ stream.Read(&word, 2);
+ bpp = (int)word;
+ if (bpp != 1 && bpp != 4 && bpp != 8 && bpp && 16 && bpp != 24 && bpp != 32)
+ {
+ wxLogError( "unknown bitdepth in file\n" );
+ return FALSE;
+ }
+ stream.Read(dbuf, 4 * 4);
+ comp = (int)dbuf[0];
+ if (comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 && comp != BI_BITFIELDS)
+ {
+ wxLogError( "unknown encoding in Windows BMP file\n" );
+ return FALSE;
+ }
+ stream.Read(dbuf, 4 * 2);
+ ncolors = (int)dbuf[0];
+ if (ncolors == 0)
+ ncolors = 1 << bpp;
+ /* some more sanity checks */
+ if (((comp == BI_RLE4) && (bpp != 4)) || ((comp == BI_RLE8) && (bpp != 8)) || ((comp == BI_BITFIELDS) && (bpp != 16 && bpp != 32)))
+ {
+ wxLogError( "encoding of BMP doesn't match bitdepth\n" );
+ return FALSE;
+ }
+ if (bpp < 16)
+ {
+ cmap = (struct _cmap *)malloc(sizeof(struct _cmap) * ncolors);
+
+ if (!cmap)
+ {
+ wxLogError( "Cannot allocate RAM for color map in BMP file\n" );
+ return FALSE;
+ }
+ }
+ else
+ cmap = NULL;
+
+ image->Create( width, height );
+ ptr = image->GetData();
+ if (!ptr)
+ {
+ wxLogError( "Cannot allocate RAM for RGB data in file\n" );
+ if (cmap)
+ free(cmap);
+ return FALSE;
+ }
+
+ /*
+ * Reading the palette, if it exists.
+ */
+ if (bpp < 16 && ncolors != 0)
+ {
+ for (i = 0; i < ncolors; i++)
+ {
+ stream.Read(bbuf, 4);
+ cmap[i].b = bbuf[0];
+ cmap[i].g = bbuf[1];
+ cmap[i].r = bbuf[2];
+ }
+ }
+ else if (bpp == 16 || bpp == 32)
+ {
+ if (comp == BI_BITFIELDS)
+ {
+ int bit = 0;
+
+ stream.Read(dbuf, 4 * 3);
+ bmask = dbuf[0];
+ gmask = dbuf[1];
+ rmask = dbuf[2];
+ /* find shift amount.. ugly, but i can't think of a better way */
+ for (bit = 0; bit < bpp; bit++)
+ {
+ if (bmask & (1 << bit))
+ bshift = bit;
+ if (gmask & (1 << bit))
+ gshift = bit;
+ if (rmask & (1 << bit))
+ rshift = bit;
+ }
+ }
+ else if (bpp == 16)
+ {
+ rmask = 0x7C00;
+ gmask = 0x03E0;
+ bmask = 0x001F;
+ rshift = 10;
+ gshift = 5;
+ bshift = 0;
+ }
+ else if (bpp == 32)
+ {
+ rmask = 0x00FF0000;
+ gmask = 0x0000FF00;
+ bmask = 0x000000FF;
+ rshift = 16;
+ gshift = 8;
+ bshift = 0;
+ }
+ }
+
+ /*
+ * Reading the image data
+ */
+ stream.SeekI(start_offset + offset);
+ data = ptr;
+
+ /* set the whole image to the background color */
+ if (bpp < 16 && (comp == BI_RLE4 || comp == BI_RLE8))
+ {
+ for (i = 0; i < width * height; i++)
+ {
+ *ptr++ = cmap[0].r;
+ *ptr++ = cmap[0].g;
+ *ptr++ = cmap[0].b;
+ }
+ ptr = data;
+ }
+ line = 0;
+ column = 0;
+#define poffset (line * width * 3 + column * 3)
+
+ /*
+ * BMPs are stored upside down... hmmmmmmmmmm....
+ */
+
+ linesize = ((width * bpp + 31) / 32) * 4;
+ for (line = (height - 1); line >= 0; line--)
+ {
+ linepos = 0;
+ for (column = 0; column < width;)
+ {
+ if (bpp < 16)
+ {
+ int index;
+
+ linepos++;
+ aByte = stream.GetC();
+ if (bpp == 1)
+ {
+ int bit = 0;
+
+ for (bit = 0; bit < 8; bit++)
+ {
+ index = ((aByte & (0x80 >> bit)) ? 1 : 0);
+ ptr[poffset] = cmap[index].r;
+ ptr[poffset + 1] = cmap[index].g;
+ ptr[poffset + 2] = cmap[index].b;
+ column++;
+ }
+ }
+ else if (bpp == 4)
+ {
+ if (comp == BI_RLE4)
+ {
+ wxLogError( "can't deal with 4bit encoded yet.\n");
+ image->Destroy();
+ free(cmap);
+ return FALSE;
+ }
+ else
+ {
+ int nibble = 0;
+
+ for (nibble = 0; nibble < 2; nibble++)
+ {
+ index = ((aByte & (0xF0 >> nibble * 4)) >> (!nibble * 4));
+ if (index >= 16)
+ index = 15;
+ ptr[poffset] = cmap[index].r;
+ ptr[poffset + 1] = cmap[index].g;
+ ptr[poffset + 2] = cmap[index].b;
+ column++;
+ }
+ }
+ }
+ else if (bpp == 8)
+ {
+ if (comp == BI_RLE8)
+ {
+ unsigned char first;
+
+ first = aByte;
+ aByte = stream.GetC();
+ if (first == 0)
+ {
+ if (aByte == 0)
+ {
+ /* column = width; */
+ }
+ else if (aByte == 1)
+ {
+ column = width;
+ line = -1;
+ }
+ else if (aByte == 2)
+ {
+ aByte = stream.GetC();
+ column += aByte;
+ linepos = column * bpp / 8;
+ aByte = stream.GetC();
+ line += aByte;
+ }
+ else
+ {
+ int absolute = aByte;
+
+ for (i = 0; i < absolute; i++)
+ {
+ linepos++;
+ aByte = stream.GetC();
+ ptr[poffset] = cmap[aByte].r;
+ ptr[poffset + 1] = cmap[aByte].g;
+ ptr[poffset + 2] = cmap[aByte].b;
+ column++;
+ }
+ if (absolute & 0x01)
+ aByte = stream.GetC();
+ }
+ }
+ else
+ {
+ for (i = 0; i < first; i++)
+ {
+ ptr[poffset] = cmap[aByte].r;
+ ptr[poffset + 1] = cmap[aByte].g;
+ ptr[poffset + 2] = cmap[aByte].b;
+ column++;
+ linepos++;
+ }
+ }
+ }
+ else
+ {
+ ptr[poffset] = cmap[aByte].r;
+ ptr[poffset + 1] = cmap[aByte].g;
+ ptr[poffset + 2] = cmap[aByte].b;
+ column++;
+ linepos += size;
+ }
+ }
+ }
+ else if (bpp == 24)
+ {
+ stream.Read(&bbuf, 3);
+ linepos += 3;
+ ptr[poffset] = (unsigned char)bbuf[2];
+ ptr[poffset + 1] = (unsigned char)bbuf[1];
+ ptr[poffset + 2] = (unsigned char)bbuf[0];
+ column++;
+ }
+ else if (bpp == 16)
+ {
+ unsigned char temp;
+
+ stream.Read(&word, 2);
+ linepos += 2;
+ temp = (word & rmask) >> rshift;
+ ptr[poffset] = temp;
+ temp = (word & gmask) >> gshift;
+ ptr[poffset + 1] = temp;
+ temp = (word & bmask) >> gshift;
+ ptr[poffset + 2] = temp;
+ column++;
+ }
+ else
+ {
+ unsigned char temp;
+
+ stream.Read(&dword, 4);
+ linepos += 4;
+ temp = (dword & rmask) >> rshift;
+ ptr[poffset] = temp;
+ temp = (dword & gmask) >> gshift;
+ ptr[poffset + 1] = temp;
+ temp = (dword & bmask) >> bshift;
+ ptr[poffset + 2] = temp;
+ column++;
+ }
+ }
+ while ((linepos < linesize) && (comp != 1) && (comp != 2))
+ {
+ stream.Read(&aByte, 1);
+ linepos += 1;
+ if (stream.LastError() != wxStream_NOERROR)
+ break;
+ }
+ }
+ if (cmap) free(cmap);
+
+ image->SetMask( FALSE );
+
+ return TRUE;
+}
+#endif // wxUSE_STREAMS
+
+#ifdef __WXMSW__
+
+wxBitmap wxImage::ConvertToBitmap() const
+{
+ // sizeLimit is the MS upper limit for the DIB size
+ int sizeLimit = 1024*768*3;
+
+ // width and height of the device-dependent bitmap
+ int width = GetWidth();
+ int bmpHeight = GetHeight();
+
+ // calc the number of bytes per scanline and padding
+ int bytePerLine = width*3;
+ int sizeDWORD = sizeof( DWORD );
+ div_t lineBoundary = div( bytePerLine, sizeDWORD );
+ int padding = 0;
+ if( lineBoundary.rem > 0 )
+ {
+ padding = sizeDWORD - lineBoundary.rem;
+ bytePerLine += padding;
+ }
+ // calc the number of DIBs and heights of DIBs
+ int numDIB = 1;
+ int hRemain = 0;
+ int height = sizeLimit/bytePerLine;
+ if( height >= bmpHeight )
+ height = bmpHeight;
+ else
+ {
+ div_t result = div( bmpHeight, height );
+ numDIB = result.quot;
+ hRemain = result.rem;
+ if( hRemain >0 ) numDIB++;
+ }
+
+ // set bitmap parameters
+ wxBitmap bitmap;
+ wxCHECK_MSG( Ok(), bitmap, "invalid image" );
+ bitmap.SetWidth( width );
+ bitmap.SetHeight( bmpHeight );
+ bitmap.SetDepth( wxDisplayDepth() );
+
+ // create a DIB header
+ int headersize = sizeof(BITMAPINFOHEADER);
+ LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
+ wxCHECK_MSG( lpDIBh, bitmap, "could not allocate memory for DIB header" );
+ // Fill in the DIB header
+ lpDIBh->bmiHeader.biSize = headersize;
+ lpDIBh->bmiHeader.biWidth = (DWORD)width;
+ lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
+ lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
+ // the general formula for biSizeImage:
+ // ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
+ lpDIBh->bmiHeader.biPlanes = 1;
+ lpDIBh->bmiHeader.biBitCount = 24;
+ lpDIBh->bmiHeader.biCompression = BI_RGB;
+ lpDIBh->bmiHeader.biClrUsed = 0;
+ // These seem not really needed for our purpose here.
+ lpDIBh->bmiHeader.biClrImportant = 0;
+ lpDIBh->bmiHeader.biXPelsPerMeter = 0;
+ lpDIBh->bmiHeader.biYPelsPerMeter = 0;
+ // memory for DIB data
+ unsigned char *lpBits;
+ lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
+ if( !lpBits )
+ {
+ wxFAIL_MSG( "could not allocate memory for DIB" );
+ free( lpDIBh );
+ return bitmap;
+ }
+
+ // create and set the device-dependent bitmap
+ HDC hdc = ::GetDC(NULL);
+ HDC memdc = ::CreateCompatibleDC( hdc );
+ HBITMAP hbitmap;
+ hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
+ ::SelectObject( memdc, hbitmap);
+
+ // copy image data into DIB data and then into DDB (in a loop)
+ unsigned char *data = GetData();
+ int i, j, n;
+ int origin = 0;
+ unsigned char *ptdata = data;
+ unsigned char *ptbits;
+
+ for( n=0; n<numDIB; n++ )
+ {
+ if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
+ {
+ // redefine height and size of the (possibly) last smaller DIB
+ // memory is not reallocated
+ height = hRemain;
+ lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
+ lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
+ }
+ ptbits = lpBits;
+
+ for( j=0; j<height; j++ )
+ {
+ for( i=0; i<width; i++ )
+ {
+ *(ptbits++) = *(ptdata+2);
+ *(ptbits++) = *(ptdata+1);
+ *(ptbits++) = *(ptdata );
+ ptdata += 3;
+ }
+ for( i=0; i< padding; i++ ) *(ptbits++) = 0;
+ }
+ ::StretchDIBits( memdc, 0, origin, width, height,\
+ 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
+ origin += height;
+ // if numDIB = 1, lines below can also be used
+ // hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
+ // The above line is equivalent to the following two lines.
+ // hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
+ // ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
+ // or the following lines
+ // hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
+ // HDC memdc = ::CreateCompatibleDC( hdc );
+ // ::SelectObject( memdc, hbitmap);
+ // ::SetDIBitsToDevice( memdc, 0, 0, width, height,
+ // 0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
+ // ::SelectObject( memdc, 0 );
+ // ::DeleteDC( memdc );
+ }
+ bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
+
+ // similarly, created an mono-bitmap for the possible mask
+ if( HasMask() )
+ {
+ hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
+ ::SelectObject( memdc, hbitmap);
+ if( numDIB == 1 ) height = bmpHeight;
+ else height = sizeLimit/bytePerLine;
+ lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
+ lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
+ origin = 0;
+ unsigned char r = GetMaskRed();
+ unsigned char g = GetMaskGreen();
+ unsigned char b = GetMaskBlue();
+ unsigned char zero = 0, one = 255;
+ ptdata = data;
+ for( n=0; n<numDIB; n++ )
+ {
+ if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
+ {
+ // redefine height and size of the (possibly) last smaller DIB
+ // memory is not reallocated
+ height = hRemain;
+ lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
+ lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
+ }
+ ptbits = lpBits;
+ for( int j=0; j<height; j++ )
+ {
+ for(i=0; i<width; i++ )
+ {
+ if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
+ {
+ *(ptbits++) = one;
+ *(ptbits++) = one;
+ *(ptbits++) = one;
+ }
+ else
+ {
+ *(ptbits++) = zero;
+ *(ptbits++) = zero;
+ *(ptbits++) = zero;
+ }
+ }
+ for( i=0; i< padding; i++ ) *(ptbits++) = zero;
+ }
+ ::StretchDIBits( memdc, 0, origin, width, height,\
+ 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
+ origin += height;
+ }
+ // create a wxMask object
+ wxMask *mask = new wxMask();
+ mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
+ bitmap.SetMask( mask );
+ // It will be deleted when the wxBitmap object is deleted (as of 01/1999)
+ /* The following can also be used but is slow to run
+ wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue());
+ wxMask *mask = new wxMask( bitmap, colour );
+ bitmap.SetMask( mask );
+ */
+ }
+
+ // free allocated resources
+ ::SelectObject( memdc, 0 );
+ ::DeleteDC( memdc );
+ ::ReleaseDC(NULL, hdc);
+ free(lpDIBh);
+ free(lpBits);
+
+ // check the wxBitmap object
+ if( bitmap.GetHBITMAP() )
+ bitmap.SetOk( TRUE );
+ else
+ bitmap.SetOk( FALSE );
+
+ return bitmap;
+}
+
+wxImage::wxImage( const wxBitmap &bitmap )
+{
+ // check the bitmap
+ if( !bitmap.Ok() )
+ {
+ wxFAIL_MSG( "invalid bitmap" );
+ return;
+ }
+
+ // create an wxImage object
+ int width = bitmap.GetWidth();
+ int height = bitmap.GetHeight();
+ Create( width, height );
+ unsigned char *data = GetData();
+ if( !data )
+ {
+ wxFAIL_MSG( "could not allocate data for image" );
+ return;
+ }
+
+ // calc the number of bytes per scanline and padding in the DIB
+ int bytePerLine = width*3;
+ int sizeDWORD = sizeof( DWORD );
+ div_t lineBoundary = div( bytePerLine, sizeDWORD );
+ int padding = 0;
+ if( lineBoundary.rem > 0 )
+ {
+ padding = sizeDWORD - lineBoundary.rem;
+ bytePerLine += padding;
+ }
+
+ // create a DIB header
+ int headersize = sizeof(BITMAPINFOHEADER);
+ LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
+ if( !lpDIBh )
+ {
+ wxFAIL_MSG( "could not allocate data for DIB header" );
+ free( data );
+ return;
+ }
+ // Fill in the DIB header
+ lpDIBh->bmiHeader.biSize = headersize;
+ lpDIBh->bmiHeader.biWidth = width;
+ lpDIBh->bmiHeader.biHeight = -height;
+ lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
+ lpDIBh->bmiHeader.biPlanes = 1;
+ lpDIBh->bmiHeader.biBitCount = 24;
+ lpDIBh->bmiHeader.biCompression = BI_RGB;
+ lpDIBh->bmiHeader.biClrUsed = 0;
+ // These seem not really needed for our purpose here.
+ lpDIBh->bmiHeader.biClrImportant = 0;
+ lpDIBh->bmiHeader.biXPelsPerMeter = 0;
+ lpDIBh->bmiHeader.biYPelsPerMeter = 0;
+ // memory for DIB data
+ unsigned char *lpBits;
+ lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
+ if( !lpBits )
+ {
+ wxFAIL_MSG( "could not allocate data for DIB" );
+ free( data );
+ free( lpDIBh );
+ return;
+ }
+
+ // copy data from the device-dependent bitmap to the DIB
+ HDC hdc = ::GetDC(NULL);
+ HBITMAP hbitmap;
+ hbitmap = (HBITMAP) bitmap.GetHBITMAP();
+ ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
+
+ // copy DIB data into the wxImage object
+ int i, j;
+ unsigned char *ptdata = data;
+ unsigned char *ptbits = lpBits;
+ for( i=0; i<height; i++ )
+ {
+ for( j=0; j<width; j++ )
+ {
+ *(ptdata++) = *(ptbits+2);
+ *(ptdata++) = *(ptbits+1);
+ *(ptdata++) = *(ptbits );
+ ptbits += 3;
+ }
+ ptbits += padding;
+ }
+
+ // similarly, set data according to the possible mask bitmap
+ if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
+ {
+ hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
+ // memory DC created, color set, data copied, and memory DC deleted
+ HDC memdc = ::CreateCompatibleDC( hdc );
+ ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
+ ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
+ ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
+ ::DeleteDC( memdc );
+ // background color set to RGB(16,16,16) in consistent with wxGTK
+ unsigned char r=16, g=16, b=16;
+ ptdata = data;
+ ptbits = lpBits;
+ for( i=0; i<height; i++ )
+ {
+ for( j=0; j<width; j++ )
+ {
+ if( *ptbits != 0 )
+ ptdata += 3;
+ else
+ {
+ *(ptdata++) = r;
+ *(ptdata++) = g;
+ *(ptdata++) = b;
+ }
+ ptbits += 3;
+ }
+ ptbits += padding;
+ }
+ SetMaskColour( r, g, b );
+ SetMask( TRUE );
+ }
+ else
+ {
+ SetMask( FALSE );
+ }
+ // free allocated resources
+ ::ReleaseDC(NULL, hdc);
+ free(lpDIBh);
+ free(lpBits);
+}
+
+#endif
+
+#ifdef __WXGTK__
+
+#include "gtk/gtk.h"
+#include "gdk/gdk.h"
+#include "gdk/gdkx.h"
+
+wxBitmap wxImage::ConvertToBitmap() const
+{
+ wxBitmap bitmap;
+
+ wxCHECK_MSG( Ok(), bitmap, "invalid image" );
+
+ int width = GetWidth();
+ int height = GetHeight();
+
+ bitmap.SetHeight( height );
+ bitmap.SetWidth( width );
+
+ // Create picture
+
+ GdkImage *data_image =
+ gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height );
+
+ bitmap.SetPixmap( gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 ) );
+
+ // Create mask
+
+ GdkImage *mask_image = (GdkImage*) NULL;
+
+ if (HasMask())
+ {
+ unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
+
+ mask_image = gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
+
+ wxMask *mask = new wxMask();
+ mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
+
+ bitmap.SetMask( mask );
+ }
+
+ // Retrieve depth
+
+ GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
+ if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
+ int bpp = visual->depth;
+
+ bitmap.SetDepth( bpp );
+
+ if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
+ if (bpp < 8) bpp = 8;
+
+ // Render
+
+ enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
+ byte_order b_o = RGB;
+
+ if (bpp >= 24)
+ {
+ GdkVisual *visual = gdk_visual_get_system();
+ if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask)) b_o = RGB;
+ else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask)) b_o = RGB;
+ else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask)) b_o = BRG;
+ else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
+ else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask)) b_o = GRB;
+ else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask)) b_o = GBR;
+ }
+
+ int r_mask = GetMaskRed();
+ int g_mask = GetMaskGreen();
+ int b_mask = GetMaskBlue();
+
+ unsigned char* data = GetData();
+
+ int index = 0;
+ for (int y = 0; y < height; y++)
+ {
+ for (int x = 0; x < width; x++)
+ {
+ int r = data[index];
+ index++;
+ int g = data[index];
+ index++;
+ int b = data[index];
+ index++;
+
+ if (HasMask())
+ {
+ if ((r == r_mask) && (b == b_mask) && (g == g_mask))
+ gdk_image_put_pixel( mask_image, x, y, 1 );
+ else
+ gdk_image_put_pixel( mask_image, x, y, 0 );
+ }
+
+ if (HasMask())
+ {
+ if ((r == r_mask) && (b == b_mask) && (g == g_mask))
+ gdk_image_put_pixel( mask_image, x, y, 1 );
+ else
+ gdk_image_put_pixel( mask_image, x, y, 0 );
+ }
+
+ switch (bpp)
+ {
+ case 8:
+ {
+ int pixel = -1;
+ if (wxTheApp->m_colorCube)
+ {
+ pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
+ }
+ else
+ {
+ GdkColormap *cmap = gtk_widget_get_default_colormap();
+ GdkColor *colors = cmap->colors;
+ int max = 3 * (65536);
+
+ for (int i = 0; i < cmap->size; i++)
+ {
+ int rdiff = (r << 8) - colors[i].red;
+ int gdiff = (g << 8) - colors[i].green;
+ int bdiff = (b << 8) - colors[i].blue;
+ int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
+ if (sum < max) { pixel = i; max = sum; }
+ }
+ }
+
+ gdk_image_put_pixel( data_image, x, y, pixel );
+
+ break;
+ }
+ case 15:
+ {
+ guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
+ gdk_image_put_pixel( data_image, x, y, pixel );
+ break;
+ }
+ case 16:
+ {
+ guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
+ gdk_image_put_pixel( data_image, x, y, pixel );
+ break;
+ }
+ case 32:
+ case 24:
+ {
+ guint32 pixel = 0;
+ switch (b_o)
+ {
+ case RGB: pixel = (r << 16) | (g << 8) | b; break;
+ case RBG: pixel = (r << 16) | (b << 8) | g; break;
+ case BRG: pixel = (b << 16) | (r << 8) | g; break;
+ case BGR: pixel = (b << 16) | (g << 8) | r; break;
+ case GRB: pixel = (g << 16) | (r << 8) | b; break;
+ case GBR: pixel = (g << 16) | (b << 8) | r; break;
+ }
+ gdk_image_put_pixel( data_image, x, y, pixel );
+ }
+ default: break;
+ }
+ } // for
+ } // for
+
+ // Blit picture
+
+ GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() );
+
+ gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
+
+ gdk_image_destroy( data_image );
+ gdk_gc_unref( data_gc );
+
+ // Blit mask
+
+ if (HasMask())
+ {
+ GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
+
+ gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
+
+ gdk_image_destroy( mask_image );
+ gdk_gc_unref( mask_gc );
+ }
+
+ return bitmap;
+}
+
+wxImage::wxImage( const wxBitmap &bitmap )
+{
+ wxCHECK_RET( bitmap.Ok(), "invalid bitmap" );
+
+ GdkImage *gdk_image = gdk_image_get( bitmap.GetPixmap(),
+ 0, 0,
+ bitmap.GetWidth(), bitmap.GetHeight() );
+
+ wxCHECK_RET( gdk_image, "couldn't create image" );
+
+ Create( bitmap.GetWidth(), bitmap.GetHeight() );
+ char unsigned *data = GetData();
+
+ if (!data)
+ {
+ gdk_image_destroy( gdk_image );
+ wxFAIL_MSG( "couldn't create image" );
+ return;
+ }
+
+ GdkImage *gdk_image_mask = (GdkImage*) NULL;
+ if (bitmap.GetMask())
+ {
+ gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
+ 0, 0,
+ bitmap.GetWidth(), bitmap.GetHeight() );
+
+ SetMaskColour( 16, 16, 16 ); // anything unlikely and dividable
+ }
+
+ GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
+ if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
+ int bpp = visual->depth;
+ if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
+
+ GdkColormap *cmap = gtk_widget_get_default_colormap();
+
+ long pos = 0;
+ for (int j = 0; j < bitmap.GetHeight(); j++)
+ {
+ for (int i = 0; i < bitmap.GetWidth(); i++)
+ {
+ int pixel = gdk_image_get_pixel( gdk_image, i, j );
+ if (bpp <= 8)
+ {
+ data[pos] = cmap->colors[pixel].red >> 8;
+ data[pos+1] = cmap->colors[pixel].green >> 8;
+ data[pos+2] = cmap->colors[pixel].blue >> 8;
+ } else if (bpp == 15)
+ {
+ data[pos] = (pixel >> 7) & 0xf8;
+ data[pos+1] = (pixel >> 2) & 0xf8;
+ data[pos+2] = (pixel << 3) & 0xf8;
+ } else if (bpp == 16)
+ {
+ data[pos] = (pixel >> 8) & 0xf8;
+ data[pos+1] = (pixel >> 3) & 0xfc;
+ data[pos+2] = (pixel << 3) & 0xf8;
+ } else
+ {
+ data[pos] = (pixel >> 16) & 0xff;
+ data[pos+1] = (pixel >> 8) & 0xff;
+ data[pos+2] = pixel & 0xff;
+ }
+
+ if (gdk_image_mask)
+ {
+ int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
+ if (mask_pixel == 0)
+ {
+ data[pos] = 16;
+ data[pos+1] = 16;
+ data[pos+2] = 16;
+ }
+ }
+
+ pos += 3;
+ }
+ }
+
+ gdk_image_destroy( gdk_image );
+ if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
+}
+
+#endif
+
+#ifdef __WXMOTIF__
+
+#include <Xm/Xm.h>
+#include "wx/utils.h"
+#include <math.h>
+
+wxBitmap wxImage::ConvertToBitmap() const
+{
+ wxBitmap bitmap;
+
+ wxCHECK_MSG( Ok(), bitmap, "invalid image" );
+
+ int width = GetWidth();
+ int height = GetHeight();
+
+ bitmap.SetHeight( height );
+ bitmap.SetWidth( width );
+
+ Display *dpy = (Display*) wxGetDisplay();
+ Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
+ int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
+
+ // Create image
+
+ XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 );
+ data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height );
+
+ bitmap.Create( width, height, bpp );
+
+ /*
+ // Create mask
+
+ GdkImage *mask_image = (GdkImage*) NULL;
+
+ if (HasMask())
+ {
+ unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
+
+ mask_image = gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
+
+ wxMask *mask = new wxMask();
+ mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
+
+ bitmap.SetMask( mask );
+ }
+ */
+
+ // Retrieve depth info
+
+ XVisualInfo vinfo_template;
+ XVisualInfo *vi;
+
+ vinfo_template.visual = vis;
+ vinfo_template.visualid = XVisualIDFromVisual( vis );
+ vinfo_template.depth = bpp;
+ int nitem = 0;
+
+ vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
+
+ if (!vi)
+ {
+ printf("no visual.\n" );
+ return wxNullBitmap;
+ }
+
+ XFree( vi );
+
+ if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
+ if (bpp < 8) bpp = 8;
+
+ // Render
+
+ enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
+ byte_order b_o = RGB;
+
+ if (bpp >= 24)
+ {
+ if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask)) b_o = RGB;
+ else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask)) b_o = RGB;
+ else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask)) b_o = BRG;
+ else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
+ else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask)) b_o = GRB;
+ else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask)) b_o = GBR;
+ }
+
+ /*
+ int r_mask = GetMaskRed();
+ int g_mask = GetMaskGreen();
+ int b_mask = GetMaskBlue();
+ */
+
+ XColor colors[256];
+ if (bpp == 8)
+ {
+ Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy );
+
+ for (int i = 0; i < 256; i++) colors[i].pixel = i;
+ XQueryColors( dpy, cmap, colors, 256 );
+ }
+
+ unsigned char* data = GetData();
+
+ int index = 0;
+ for (int y = 0; y < height; y++)
+ {
+ for (int x = 0; x < width; x++)
+ {
+ int r = data[index];
+ index++;
+ int g = data[index];
+ index++;
+ int b = data[index];
+ index++;
+
+ /*
+ if (HasMask())
+ {
+ if ((r == r_mask) && (b == b_mask) && (g == g_mask))
+ gdk_image_put_pixel( mask_image, x, y, 1 );
+ else
+ gdk_image_put_pixel( mask_image, x, y, 0 );
+ }
+ */
+
+ switch (bpp)
+ {
+ case 8:
+ {
+ int pixel = -1;
+ /*
+ if (wxTheApp->m_colorCube)
+ {
+ pixel = wxTheApp->m_colorCube
+ [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
+ }
+ else
+ {
+ */
+ int max = 3 * (65536);
+ for (int i = 0; i < 256; i++)
+ {
+ int rdiff = (r << 8) - colors[i].red;
+ int gdiff = (g << 8) - colors[i].green;
+ int bdiff = (b << 8) - colors[i].blue;
+ int sum = abs (rdiff) + abs (gdiff) + abs (bdiff);
+ if (sum < max) { pixel = i; max = sum; }
+ }
+ /*
+ }
+ */
+ XPutPixel( data_image, x, y, pixel );
+ break;
+ }
+ case 15:
+ {
+ int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
+ XPutPixel( data_image, x, y, pixel );
+ break;
+ }
+ case 16:
+ {
+ int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
+ XPutPixel( data_image, x, y, pixel );
+ break;
+ }
+ case 32:
+ case 24:
+ {
+ int pixel = 0;
+ switch (b_o)
+ {
+ case RGB: pixel = (r << 16) | (g << 8) | b; break;
+ case RBG: pixel = (r << 16) | (b << 8) | g; break;
+ case BRG: pixel = (b << 16) | (r << 8) | g; break;
+ case BGR: pixel = (b << 16) | (g << 8) | r; break;
+ case GRB: pixel = (g << 16) | (r << 8) | b; break;
+ case GBR: pixel = (g << 16) | (b << 8) | r; break;
+ }
+ XPutPixel( data_image, x, y, pixel );
+ }
+ default: break;
+ }
+ } // for
+ } // for
+
+ // Blit picture
+
+ XGCValues gcvalues;
+ gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) );
+ GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues );
+ XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height );
+
+ XDestroyImage( data_image );
+ XFreeGC( dpy, gc );
+
+ /*
+ // Blit mask
+
+ if (HasMask())
+ {
+ GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
+
+ gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
+
+ gdk_image_destroy( mask_image );
+ gdk_gc_unref( mask_gc );
+ }
+ */
+
+ return bitmap;
+}
+
+wxImage::wxImage( const wxBitmap &bitmap )
+{
+ wxCHECK_RET( bitmap.Ok(), "invalid bitmap" );
+
+ Display *dpy = (Display*) wxGetDisplay();
+ Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
+ int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
+
+ XImage *ximage = XGetImage( dpy,
+ (Drawable)bitmap.GetPixmap(),
+ 0, 0,
+ bitmap.GetWidth(), bitmap.GetHeight(),
+ AllPlanes, ZPixmap );
+
+ wxCHECK_RET( ximage, "couldn't create image" );
+
+ Create( bitmap.GetWidth(), bitmap.GetHeight() );
+ char unsigned *data = GetData();
+
+ if (!data)
+ {
+ XDestroyImage( ximage );
+ wxFAIL_MSG( "couldn't create image" );
+ return;
+ }
+
+ /*
+ GdkImage *gdk_image_mask = (GdkImage*) NULL;
+ if (bitmap.GetMask())
+ {
+ gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
+ 0, 0,
+ bitmap.GetWidth(), bitmap.GetHeight() );
+
+ SetMaskColour( 16, 16, 16 ); // anything unlikely and dividable
+ }
+ */
+
+ // Retrieve depth info
+
+ XVisualInfo vinfo_template;
+ XVisualInfo *vi;
+
+ vinfo_template.visual = vis;
+ vinfo_template.visualid = XVisualIDFromVisual( vis );
+ vinfo_template.depth = bpp;
+ int nitem = 0;
+
+ vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
+
+ if (!vi)
+ {
+ printf("no visual.\n" );
+ return;
+ }
+
+ if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
+
+ XFree( vi );
+
+ XColor colors[256];
+ if (bpp == 8)
+ {
+ Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy );
+
+ for (int i = 0; i < 256; i++) colors[i].pixel = i;
+ XQueryColors( dpy, cmap, colors, 256 );
+ }
+
+ long pos = 0;
+ for (int j = 0; j < bitmap.GetHeight(); j++)
+ {
+ for (int i = 0; i < bitmap.GetWidth(); i++)
+ {
+ int pixel = XGetPixel( ximage, i, j );
+ if (bpp <= 8)
+ {
+ data[pos] = colors[pixel].red >> 8;
+ data[pos+1] = colors[pixel].green >> 8;
+ data[pos+2] = colors[pixel].blue >> 8;
+ } else if (bpp == 15)
+ {
+ data[pos] = (pixel >> 7) & 0xf8;
+ data[pos+1] = (pixel >> 2) & 0xf8;
+ data[pos+2] = (pixel << 3) & 0xf8;
+ } else if (bpp == 16)
+ {
+ data[pos] = (pixel >> 8) & 0xf8;
+ data[pos+1] = (pixel >> 3) & 0xfc;
+ data[pos+2] = (pixel << 3) & 0xf8;
+ } else
+ {
+ data[pos] = (pixel >> 16) & 0xff;
+ data[pos+1] = (pixel >> 8) & 0xff;
+ data[pos+2] = pixel & 0xff;
+ }
+
+ /*
+ if (gdk_image_mask)
+ {
+ int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
+ if (mask_pixel == 0)
+ {
+ data[pos] = 16;
+ data[pos+1] = 16;
+ data[pos+2] = 16;
+ }
+ }
+ */
+
+ pos += 3;
+ }
+ }
+
+ XDestroyImage( ximage );
+ /*
+ if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
+ */
+}
+#endif
+
+// A module to allow wxImage initialization/cleanup
+// without calling these functions from app.cpp or from
+// the user's application.
+
+class wxImageModule: public wxModule
+{
+DECLARE_DYNAMIC_CLASS(wxImageModule)
+public:
+ wxImageModule() {}
+ bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
+ void OnExit() { wxImage::CleanUpHandlers(); };
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)
+
projects / wxWidgets.git / blobdiff