#endif // wxUSE_STREAMS
wxImage::wxImage( const wxImage& image )
+ : wxObject()
{
Ref(image);
}
wxCHECK_MSG( data, image, wxT("unable to create image") );
- if (M_IMGDATA->m_hasMask)
- image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+ image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
+ image.SetMask( M_IMGDATA->m_hasMask );
memcpy( data, GetData(), M_IMGDATA->m_width*M_IMGDATA->m_height*3 );
}
#endif
+ // In case this is a cursor, make sure the hotspot is scalled accordingly:
+ if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X) )
+ image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X,
+ (GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X)*width)/old_width);
+ if ( HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y) )
+ image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y,
+ (GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y)*height)/old_height);
+
return image;
}
bool wxImage::FindFirstUnusedColour(
unsigned char *r, unsigned char *g, unsigned char *b,
- unsigned char startR, unsigned char startG, unsigned char startB)
+ unsigned char startR, unsigned char startG, unsigned char startB) const
{
- wxHashTable hTable;
+ wxImageHistogram histogram;
unsigned long key;
- ComputeHistogram( hTable );
+ ComputeHistogram(histogram);
unsigned char r2 = startR;
unsigned char g2 = startG;
key = (r2 << 16) | (g2 << 8) | b2;
- while ( (wxHNode *) hTable.Get(key) )
+ while ( histogram.find(key) != histogram.end() )
{
// color already used
r2++;
#endif // wxUSE_STREAMS
}
-bool wxImage::SaveFile( const wxString& filename, int type )
+
+
+bool wxImage::SaveFile( const wxString& filename ) const
+{
+ wxString ext = filename.AfterLast('.').Lower();
+
+ wxImageHandler * pHandler = FindHandler(ext, -1);
+ if (pHandler)
+ {
+ SaveFile(filename, pHandler->GetType());
+ return TRUE;
+ }
+
+ wxLogError(_("Can't save image to file '%s': unknown extension."), filename.c_str());
+
+ return FALSE;
+}
+
+bool wxImage::SaveFile( const wxString& filename, int type ) const
{
#if wxUSE_STREAMS
+ ((wxImage*)this)->SetOption(wxIMAGE_OPTION_FILENAME, filename);
+
wxFileOutputStream stream(filename);
- if ( stream.LastError() == wxStream_NOERROR )
+ if ( stream.IsOk() )
{
wxBufferedOutputStream bstream( stream );
return SaveFile(bstream, type);
return FALSE;
}
-bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype )
+bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype ) const
{
#if wxUSE_STREAMS
+ ((wxImage*)this)->SetOption(wxIMAGE_OPTION_FILENAME, filename);
+
wxFileOutputStream stream(filename);
- if ( stream.LastError() == wxStream_NOERROR )
+ if ( stream.IsOk() )
{
wxBufferedOutputStream bstream( stream );
return SaveFile(bstream, mimetype);
{
#if wxUSE_STREAMS
wxFileInputStream stream(name);
- return GetImageCount(stream, type);
-#else
- return 0;
+ if (stream.Ok())
+ return GetImageCount(stream, type);
#endif
+
+ return 0;
}
#if wxUSE_STREAMS
bool wxImage::CanRead( wxInputStream &stream )
{
- wxList &list=GetHandlers();
+ const wxList& list = GetHandlers();
for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
{
handler = FindHandler(type);
- if (handler == NULL)
+ if (handler == 0)
{
wxLogWarning( _("No image handler for type %d defined."), type );
wxImageHandler *handler = FindHandlerMime(mimetype);
- if (handler == NULL)
+ if (handler == 0)
{
wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );
return handler->LoadFile( this, stream, TRUE/*verbose*/, index );
}
-bool wxImage::SaveFile( wxOutputStream& stream, int type )
+bool wxImage::SaveFile( wxOutputStream& stream, int type ) const
{
wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
wxImageHandler *handler = FindHandler(type);
- if (handler == NULL)
+ if (handler == 0)
{
wxLogWarning( _("No image handler for type %d defined."), type );
return FALSE;
}
- return handler->SaveFile( this, stream );
+ return handler->SaveFile( (wxImage*)this, stream );
}
-bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype )
+bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const
{
wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
wxImageHandler *handler = FindHandlerMime(mimetype);
- if (handler == NULL)
+ if (handler == 0)
{
wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );
return FALSE;
}
- return handler->SaveFile( this, stream );
+ return handler->SaveFile( (wxImage*)this, stream );
}
#endif // wxUSE_STREAMS
// make sure that the memory will be freed at the program end
sm_handlers.DeleteContents(TRUE);
- sm_handlers.Append( handler );
+ // Check for an existing handler of the type being added.
+ if (FindHandler( handler->GetType() ) == 0)
+ {
+ sm_handlers.Append( handler );
+ }
+ else
+ {
+ // This is not documented behaviour, merely the simplest 'fix'
+ // for preventing duplicate additions. If someone ever has
+ // a good reason to add and remove duplicate handlers (and they
+ // may) we should probably refcount the duplicates.
+ // also an issue in InsertHandler below.
+
+ wxLogDebug( _T("Adding duplicate image handler for '%s'"),
+ handler->GetName().c_str() );
+ delete 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 );
+ // Check for an existing handler of the type being added.
+ if (FindHandler( handler->GetType() ) == 0)
+ {
+ sm_handlers.Insert( handler );
+ }
+ else
+ {
+ // see AddHandler for additional comments.
+ wxLogDebug( _T("Inserting duplicate image handler for '%s'"),
+ handler->GetName().c_str() );
+ delete handler;
+ }
}
bool wxImage::RemoveHandler( const wxString& name )
node = node->Next();
}
- return (wxImageHandler *)NULL;
+ return 0;
}
wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType )
return handler;
node = node->Next();
}
- return (wxImageHandler*)NULL;
+ return 0;
}
wxImageHandler *wxImage::FindHandler( long bitmapType )
if (handler->GetType() == bitmapType) return handler;
node = node->Next();
}
- return NULL;
+ return 0;
}
wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype )
if (handler->GetMimeType().IsSameAs(mimetype, FALSE)) return handler;
node = node->Next();
}
- return NULL;
+ return 0;
}
void wxImage::InitStandardHandlers()
#if wxUSE_STREAMS
AddHandler(new wxBMPHandler);
#endif // wxUSE_STREAMS
-
-#if wxUSE_XPM && !defined(__WXGTK__) && !defined(__WXMOTIF__)
- AddHandler(new wxXPMHandler);
-#endif
}
void wxImage::CleanUpHandlers()
return CanRead(stream);
}
- else {
- wxLogError( _("Can't check image format of file '%s': file does not exist."), name.c_str() );
+ wxLogError( _("Can't check image format of file '%s': file does not exist."), name.c_str() );
+ return FALSE;
+}
+
+bool wxImageHandler::CallDoCanRead(wxInputStream& stream)
+{
+ off_t posOld = stream.TellI();
+ if ( posOld == wxInvalidOffset )
+ {
+ // can't test unseekable stream
return FALSE;
}
-// return FALSE;
+
+ bool ok = DoCanRead(stream);
+
+ // restore the old position to be able to test other formats and so on
+ if ( stream.SeekI(posOld) == wxInvalidOffset )
+ {
+ wxLogDebug(_T("Failed to rewind the stream in wxImageHandler!"));
+
+ // reading would fail anyhow as we're not at the right position
+ return FALSE;
+ }
+
+ return ok;
}
#endif // wxUSE_STREAMS
//-----------------------------------------------------------------------------
-// wxBitmap convertion routines
+// Deprecated wxBitmap conversion routines
//-----------------------------------------------------------------------------
-#if wxUSE_GUI
+#if WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI
#ifdef __WXGTK__
wxBitmap wxImage::ConvertToMonoBitmap( unsigned char red, unsigned char green, unsigned char blue ) const
*this = bitmap.ConvertToImage();
}
-#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)
+#endif // WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI
//-----------------------------------------------------------------------------
// less, in this case it would be invoked as CountColours(256)). Default
// value for stopafter is -1 (don't care).
//
-unsigned long wxImage::CountColours( unsigned long stopafter )
+unsigned long wxImage::CountColours( unsigned long stopafter ) const
{
wxHashTable h;
wxObject dummy;
}
-// GRG, Dic/99
-// Computes the histogram of the image and fills a hash table, indexed
-// with integer keys built as 0xRRGGBB, containing wxHNode objects. Each
-// wxHNode contains an 'index' (useful to build a palette with the image
-// colours) and a 'value', which is the number of pixels in the image with
-// that colour.
-//
-unsigned long wxImage::ComputeHistogram( wxHashTable &h )
+unsigned long wxImage::ComputeHistogram( wxImageHistogram &h ) const
{
unsigned char r, g, b;
unsigned char *p;
unsigned long size, nentries, key;
- wxHNode *hnode;
+
+ h.clear();
p = GetData();
size = GetWidth() * GetHeight();
b = *(p++);
key = (r << 16) | (g << 8) | b;
- hnode = (wxHNode *) h.Get(key);
-
- if (hnode)
- hnode->value++;
- else
- {
- hnode = new wxHNode();
- hnode->index = nentries++;
- hnode->value = 1;
-
- h.Put(key, (wxObject *)hnode);
- }
+ wxImageHistogramEntry& entry = h[key];
+ if ( entry.value++ == 0 )
+ entry.index = nentries++;
}
return nentries;
return rotated;
}
+
+
+
+
+// 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)
+
+
#endif // wxUSE_IMAGE
projects / wxWidgets.git / blobdiff