fixes to the sizers behaviour necessary to make the log dialog work again

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

diff --git a/src/common/image.cpp b/src/common/image.cpp
index d4f9ddac8cfe2a6020b03bf03dd412a70d28c4e8..3241ed03cd28b49cc16423fc9d1888c2f66e5241 100644 (file)
--- a/src/common/image.cpp
+++ b/src/common/image.cpp
@@ -131,6 +131,7 @@ wxImage::wxImage( wxInputStream& stream, const wxString& mimetype, int index )
 #endif // wxUSE_STREAMS
 
 wxImage::wxImage( const wxImage& image )
 #endif // wxUSE_STREAMS
 
 wxImage::wxImage( const wxImage& image )

+    : wxObject()

 {
     Ref(image);
 }
 {
     Ref(image);
 }


@@ -198,8 +199,8 @@ wxImage wxImage::Copy() const
 
     wxCHECK_MSG( data, image, wxT("unable to create 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 );
 
 
     memcpy( data, GetData(), M_IMGDATA->m_width*M_IMGDATA->m_height*3 );
 


@@ -1014,7 +1015,7 @@ int wxImage::GetImageCount( const wxString &name, long type )
 
 bool wxImage::CanRead( wxInputStream &stream )
 {
 
 bool wxImage::CanRead( wxInputStream &stream )
 {

-    wxList &list=GetHandlers();
+    const wxList& list = GetHandlers();

 
     for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
     {
 
     for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
     {


@@ -1285,12 +1286,32 @@ bool wxImageHandler::CanRead( const wxString& name )
         return CanRead(stream);
     }
 
         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;
+    }
+
+    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 FALSE;
     }

-//    return FALSE;
+
+    return ok;

 }
 
 #endif // wxUSE_STREAMS
 }
 
 #endif // wxUSE_STREAMS