wxX11 might compile now.

[wxWidgets.git] / src / common / image.cpp

diff --git a/src/common/image.cpp b/src/common/image.cpp
index ee46631c932cde21bfbfb9929b019e0b55533e9e..48b39581f5a6a69f1d13687d93e268061fb44db7 100644 (file)
--- a/src/common/image.cpp
+++ b/src/common/image.cpp
@@ -108,25 +108,25 @@ wxImage::wxImage( int width, int height, unsigned char* data, bool static_data )
     Create( width, height, data, static_data );
 }
 
-wxImage::wxImage( const wxString& name, long type )
+wxImage::wxImage( const wxString& name, long type, int index )
 {
-    LoadFile( name, type );
+    LoadFile( name, type, index );
 }
 
-wxImage::wxImage( const wxString& name, const wxString& mimetype )
+wxImage::wxImage( const wxString& name, const wxString& mimetype, int index )
 {
-    LoadFile( name, mimetype );
+    LoadFile( name, mimetype, index );
 }
 
 #if wxUSE_STREAMS
-wxImage::wxImage( wxInputStream& stream, long type )
+wxImage::wxImage( wxInputStream& stream, long type, int index )
 {
-    LoadFile( stream, type );
+    LoadFile( stream, type, index );
 }
 
-wxImage::wxImage( wxInputStream& stream, const wxString& mimetype )
+wxImage::wxImage( wxInputStream& stream, const wxString& mimetype, int index )
 {
-    LoadFile( stream, mimetype );
+    LoadFile( stream, mimetype, index );
 }
 #endif // wxUSE_STREAMS
 
@@ -723,12 +723,12 @@ int wxImage::GetHeight() const
 
 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;
@@ -736,7 +736,7 @@ bool wxImage::FindFirstUnusedColour(
     
     key = (r2 << 16) | (g2 << 8) | b2;
 
-    while ( (wxHNode *) hTable.Get(key) )
+    while ( histogram.find(key) != histogram.end() )
     {
         // color already used
         r2++;
@@ -890,14 +890,14 @@ bool wxImage::HasOption(const wxString& name) const
     return (M_IMGDATA->m_optionNames.Index(name, FALSE) != wxNOT_FOUND);
 }
 
-bool wxImage::LoadFile( const wxString& filename, long type )
+bool wxImage::LoadFile( const wxString& filename, long type, int index )
 {
 #if wxUSE_STREAMS
     if (wxFileExists(filename))
     {
         wxFileInputStream stream(filename);
         wxBufferedInputStream bstream( stream );
-        return LoadFile(bstream, type);
+        return LoadFile(bstream, type, index);
     }
     else
     {
@@ -910,14 +910,14 @@ bool wxImage::LoadFile( const wxString& filename, long type )
 #endif // wxUSE_STREAMS
 }
 
-bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype )
+bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype, int index )
 {
 #if wxUSE_STREAMS
     if (wxFileExists(filename))
     {
         wxFileInputStream stream(filename);
         wxBufferedInputStream bstream( stream );
-        return LoadFile(bstream, mimetype);
+        return LoadFile(bstream, mimetype, index);
     }
     else
     {
@@ -930,7 +930,7 @@ bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype )
 #endif // wxUSE_STREAMS
 }
 
-bool wxImage::SaveFile( const wxString& filename, int type )
+bool wxImage::SaveFile( const wxString& filename, int type ) const
 {
 #if wxUSE_STREAMS
     wxFileOutputStream stream(filename);
@@ -945,7 +945,7 @@ bool wxImage::SaveFile( const wxString& filename, int 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
     wxFileOutputStream stream(filename);
@@ -970,23 +970,72 @@ bool wxImage::CanRead( const wxString &name )
 #endif
 }
 
+int wxImage::GetImageCount( const wxString &name, long type )
+{
+#if wxUSE_STREAMS
+  wxFileInputStream stream(name);
+  return GetImageCount(stream, type);
+#else
+  return 0;
+#endif
+}
+
 #if wxUSE_STREAMS
 
 bool wxImage::CanRead( wxInputStream &stream )
 {
-  wxList &list=GetHandlers();
+    wxList &list=GetHandlers();
 
-  for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
+    for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
     {
-      wxImageHandler *handler=(wxImageHandler*)node->GetData();
-      if (handler->CanRead( stream ))
-        return TRUE;
+        wxImageHandler *handler=(wxImageHandler*)node->GetData();
+        if (handler->CanRead( stream ))
+            return TRUE;
     }
 
-  return FALSE;
+    return FALSE;
 }
 
-bool wxImage::LoadFile( wxInputStream& stream, long type )
+int wxImage::GetImageCount( wxInputStream &stream, long type )
+{
+    wxImageHandler *handler;
+
+    if ( type == wxBITMAP_TYPE_ANY )
+    {
+        wxList &list=GetHandlers();
+
+        for (wxList::Node *node = list.GetFirst(); node; node = node->GetNext())
+        {
+             handler=(wxImageHandler*)node->GetData();
+             if ( handler->CanRead(stream) )
+                 return handler->GetImageCount(stream);
+
+        }
+
+        wxLogWarning(_("No handler found for image type."));
+        return 0;
+    }
+
+    handler = FindHandler(type);
+
+    if ( !handler )
+    {
+        wxLogWarning(_("No image handler for type %d defined."), type);
+        return FALSE;
+    }
+
+    if ( handler->CanRead(stream) )
+    {
+        return handler->GetImageCount(stream);
+    }
+    else
+    {
+        wxLogError(_("Image file is not of type %d."), type);
+        return 0;
+    }
+}
+
+bool wxImage::LoadFile( wxInputStream& stream, long type, int index )
 {
     UnRef();
 
@@ -994,15 +1043,15 @@ bool wxImage::LoadFile( wxInputStream& stream, long type )
 
     wxImageHandler *handler;
 
-    if (type==wxBITMAP_TYPE_ANY)
+    if ( type == wxBITMAP_TYPE_ANY )
     {
         wxList &list=GetHandlers();
 
         for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
         {
              handler=(wxImageHandler*)node->GetData();
-             if (handler->CanRead( stream ))
-                 return handler->LoadFile( this, stream );
+             if ( handler->CanRead(stream) )
+                 return handler->LoadFile(this, stream, TRUE/*verbose*/, index);
 
         }
 
@@ -1019,10 +1068,10 @@ bool wxImage::LoadFile( wxInputStream& stream, long type )
         return FALSE;
     }
 
-    return handler->LoadFile( this, stream );
+    return handler->LoadFile(this, stream, TRUE/*verbose*/, index);
 }
 
-bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype )
+bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int index )
 {
     UnRef();
 
@@ -1037,10 +1086,10 @@ bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype )
         return FALSE;
     }
 
-    return handler->LoadFile( this, stream );
+    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") );
 
@@ -1053,10 +1102,10 @@ bool wxImage::SaveFile( wxOutputStream& stream, int 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") );
 
@@ -1069,7 +1118,7 @@ bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype )
         return FALSE;
     }
 
-    return handler->SaveFile( this, stream );
+    return handler->SaveFile( (wxImage*)this, stream );
 }
 #endif // wxUSE_STREAMS
 
@@ -1154,7 +1203,10 @@ wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype )
 
 void wxImage::InitStandardHandlers()
 {
+#if wxUSE_STREAMS
     AddHandler(new wxBMPHandler);
+#endif // wxUSE_STREAMS
+
 #if wxUSE_XPM && !defined(__WXGTK__) && !defined(__WXMOTIF__)
     AddHandler(new wxXPMHandler);
 #endif
@@ -1270,7 +1322,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)
 // 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;
@@ -1300,19 +1352,13 @@ unsigned long wxImage::CountColours( unsigned long stopafter )
 }
 
 
-// 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();
@@ -1325,18 +1371,9 @@ unsigned long wxImage::ComputeHistogram( wxHashTable &h )
         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;