assert if ShowModal() is called after a previous Show() (#1416)

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

diff --git a/src/common/image.cpp b/src/common/image.cpp
index e739d5c71e09b2a1e92a59d1e989fa7a4a2d7fff..b41fee58f655546f95f6a5d70e59b1cda7c3ab2c 100644 (file)
--- a/src/common/image.cpp
+++ b/src/common/image.cpp
@@ -64,6 +64,7 @@ public:
 
     int             m_width;
     int             m_height;
+    wxBitmapType    m_type;
     unsigned char  *m_data;
 
     bool            m_hasMask;
@@ -94,6 +95,7 @@ wxImageRefData::wxImageRefData()
 {
     m_width = 0;
     m_height = 0;
+    m_type = wxBITMAP_TYPE_INVALID;
     m_data =
     m_alpha = (unsigned char *) NULL;
 
@@ -140,7 +142,7 @@ wxImage::wxImage( int width, int height, unsigned char* data, unsigned char* alp
     Create( width, height, data, alpha, static_data );
 }
 
-wxImage::wxImage( const wxString& name, long type, int index )
+wxImage::wxImage( const wxString& name, wxBitmapType type, int index )
 {
     LoadFile( name, type, index );
 }
@@ -151,7 +153,7 @@ wxImage::wxImage( const wxString& name, const wxString& mimetype, int index )
 }
 
 #if wxUSE_STREAMS
-wxImage::wxImage( wxInputStream& stream, long type, int index )
+wxImage::wxImage( wxInputStream& stream, wxBitmapType type, int index )
 {
     LoadFile( stream, type, index );
 }
@@ -1283,6 +1285,26 @@ void wxImage::Paste( const wxImage &image, int x, int y )
         return;
     }
 
+    // Copy over the alpha channel from the original image
+    if ( image.HasAlpha() )
+    {
+        if ( !HasAlpha() )
+            InitAlpha();
+
+        unsigned char* source_data = image.GetAlpha() + xx + yy*image.GetWidth();
+        int source_step = image.GetWidth();
+
+        unsigned char* target_data = GetAlpha() + (x+xx) + (y+yy)*M_IMGDATA->m_width;
+        int target_step = M_IMGDATA->m_width;
+
+        for (int j = 0; j < height; j++,
+                                    source_data += source_step,
+                                    target_data += target_step)
+        {
+            memcpy( target_data, source_data, width );
+        }
+    }
+
     if (!HasMask() && image.HasMask())
     {
         unsigned char r = image.GetMaskRed();
@@ -1439,6 +1461,13 @@ int wxImage::GetHeight() const
     return M_IMGDATA->m_height;
 }
 
+wxBitmapType wxImage::GetType() const
+{
+    wxCHECK_MSG( IsOk(), wxBITMAP_TYPE_INVALID, wxT("invalid image") );
+
+    return M_IMGDATA->m_type;
+}
+
 long wxImage::XYToIndex(int x, int y) const
 {
     if ( Ok() &&
@@ -1994,7 +2023,7 @@ bool wxImage::HasOption(const wxString& name) const
 // ----------------------------------------------------------------------------
 
 bool wxImage::LoadFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename),
-                        long WXUNUSED_UNLESS_STREAMS(type),
+                        wxBitmapType WXUNUSED_UNLESS_STREAMS(type),
                         int WXUNUSED_UNLESS_STREAMS(index) )
 {
 #if HAS_FILE_STREAMS
@@ -2038,25 +2067,23 @@ bool wxImage::LoadFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename),
 }
 
 
-
 bool wxImage::SaveFile( const wxString& filename ) const
 {
     wxString ext = filename.AfterLast('.').Lower();
 
-    wxImageHandler * pHandler = FindHandler(ext, -1);
-    if (pHandler)
+    wxImageHandler *handler = FindHandler(ext, wxBITMAP_TYPE_ANY);
+    if ( !handler)
     {
-        SaveFile(filename, pHandler->GetType());
-        return true;
+       wxLogError(_("Can't save image to file '%s': unknown extension."),
+                  filename);
+       return false;
     }
 
-    wxLogError(_("Can't save image to file '%s': unknown extension."), filename.c_str());
-
-    return false;
+    return SaveFile(filename, handler->GetType());
 }
 
 bool wxImage::SaveFile( const wxString& WXUNUSED_UNLESS_STREAMS(filename),
-                        int WXUNUSED_UNLESS_STREAMS(type) ) const
+                        wxBitmapType WXUNUSED_UNLESS_STREAMS(type) ) const
 {
 #if HAS_FILE_STREAMS
     wxCHECK_MSG( Ok(), false, wxT("invalid image") );
@@ -2106,7 +2133,7 @@ bool wxImage::CanRead( const wxString& WXUNUSED_UNLESS_STREAMS(name) )
 }
 
 int wxImage::GetImageCount( const wxString& WXUNUSED_UNLESS_STREAMS(name),
-                            long WXUNUSED_UNLESS_STREAMS(type) )
+                            wxBitmapType WXUNUSED_UNLESS_STREAMS(type) )
 {
 #if HAS_FILE_STREAMS
     wxImageFileInputStream stream(name);
@@ -2133,19 +2160,25 @@ bool wxImage::CanRead( wxInputStream &stream )
     return false;
 }
 
-int wxImage::GetImageCount( wxInputStream &stream, long type )
+int wxImage::GetImageCount( wxInputStream &stream, wxBitmapType type )
 {
     wxImageHandler *handler;
 
     if ( type == wxBITMAP_TYPE_ANY )
     {
-        wxList &list=GetHandlers();
+        const wxList& list = GetHandlers();
 
-        for (wxList::compatibility_iterator node = list.GetFirst(); node; node = node->GetNext())
+        for ( wxList::compatibility_iterator node = list.GetFirst();
+              node;
+              node = node->GetNext() )
         {
-             handler=(wxImageHandler*)node->GetData();
+             handler = (wxImageHandler*)node->GetData();
              if ( handler->CanRead(stream) )
-                 return handler->GetImageCount(stream);
+             {
+                 const int count = handler->GetImageCount(stream);
+                 if ( count >= 0 )
+                     return count;
+             }
 
         }
 
@@ -2172,7 +2205,16 @@ int wxImage::GetImageCount( wxInputStream &stream, long type )
     }
 }
 
-bool wxImage::LoadFile( wxInputStream& stream, long type, int index )
+bool wxImage::DoLoad(wxImageHandler& handler, wxInputStream& stream, int index)
+{
+    if ( !handler.LoadFile(this, stream, true/*verbose*/, index) )
+        return false;
+
+    M_IMGDATA->m_type = handler.GetType();
+    return true;
+}
+
+bool wxImage::LoadFile( wxInputStream& stream, wxBitmapType type, int index )
 {
     UnRef();
 
@@ -2182,36 +2224,36 @@ bool wxImage::LoadFile( wxInputStream& stream, long type, int index )
 
     if ( type == wxBITMAP_TYPE_ANY )
     {
-        wxList &list=GetHandlers();
-
-        for ( wxList::compatibility_iterator node = list.GetFirst(); node; node = node->GetNext() )
+        const wxList& list = GetHandlers();
+        for ( wxList::compatibility_iterator node = list.GetFirst();
+              node;
+              node = node->GetNext() )
         {
-             handler=(wxImageHandler*)node->GetData();
-             if ( handler->CanRead(stream) )
-                 return handler->LoadFile(this, stream, true/*verbose*/, index);
-
+             handler = (wxImageHandler*)node->GetData();
+             if ( handler->CanRead(stream) && DoLoad(*handler, stream, index) )
+                 return true;
         }
 
         wxLogWarning( _("No handler found for image type.") );
+
         return false;
     }
+    //else: have specific type
 
     handler = FindHandler(type);
-
-    if (handler == 0)
+    if ( !handler )
     {
         wxLogWarning( _("No image handler for type %ld defined."), type );
-
         return false;
     }
 
-    if (stream.IsSeekable() && !handler->CanRead(stream))
+    if ( stream.IsSeekable() && !handler->CanRead(stream) )
     {
         wxLogError(_("Image file is not of type %ld."), type);
         return false;
     }
-    else
-        return handler->LoadFile(this, stream, true/*verbose*/, index);
+
+    return DoLoad(*handler, stream, index);
 }
 
 bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int index )
@@ -2222,23 +2264,32 @@ bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype, int ind
 
     wxImageHandler *handler = FindHandlerMime(mimetype);
 
-    if (handler == 0)
+    if ( !handler )
     {
         wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );
-
         return false;
     }
 
-    if (stream.IsSeekable() && !handler->CanRead(stream))
+    if ( stream.IsSeekable() && !handler->CanRead(stream) )
     {
         wxLogError(_("Image file is not of type %s."), mimetype);
         return false;
     }
-    else
-        return handler->LoadFile( this, stream, true/*verbose*/, index );
+
+    return DoLoad(*handler, stream, index);
 }
 
-bool wxImage::SaveFile( wxOutputStream& stream, int type ) const
+bool wxImage::DoSave(wxImageHandler& handler, wxOutputStream& stream) const
+{
+    wxImage * const self = wx_const_cast(wxImage *, this);
+    if ( !handler.SaveFile(self, stream) )
+        return false;
+
+    M_IMGDATA->m_type = handler.GetType();
+    return true;
+}
+
+bool wxImage::SaveFile( wxOutputStream& stream, wxBitmapType type ) const
 {
     wxCHECK_MSG( Ok(), false, wxT("invalid image") );
 
@@ -2246,11 +2297,10 @@ bool wxImage::SaveFile( wxOutputStream& stream, int type ) const
     if ( !handler )
     {
         wxLogWarning( _("No image handler for type %d defined."), type );
-
         return false;
     }
 
-    return handler->SaveFile( (wxImage*)this, stream );
+    return DoSave(*handler, stream);
 }
 
 bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const
@@ -2261,12 +2311,11 @@ bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype ) const
     if ( !handler )
     {
         wxLogWarning( _("No image handler for type %s defined."), mimetype.GetData() );
-
-        return false;
     }
 
-    return handler->SaveFile( (wxImage*)this, stream );
+    return DoSave(*handler, stream);
 }
+
 #endif // wxUSE_STREAMS
 
 // ----------------------------------------------------------------------------
@@ -2336,21 +2385,23 @@ wxImageHandler *wxImage::FindHandler( const wxString& name )
     return NULL;
 }
 
-wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType )
+wxImageHandler *wxImage::FindHandler( const wxString& extension, wxBitmapType bitmapType )
 {
     wxList::compatibility_iterator node = sm_handlers.GetFirst();
     while (node)
     {
         wxImageHandler *handler = (wxImageHandler*)node->GetData();
         if ( (handler->GetExtension().Cmp(extension) == 0) &&
-            (bitmapType == -1 || handler->GetType() == bitmapType) )
+             ( (bitmapType == wxBITMAP_TYPE_ANY) || (handler->GetType() == bitmapType)) )
+        {
             return handler;
+        }
         node = node->GetNext();
     }
     return NULL;
 }
 
-wxImageHandler *wxImage::FindHandler( long bitmapType )
+wxImageHandler *wxImage::FindHandler(wxBitmapType bitmapType )
 {
     wxList::compatibility_iterator node = sm_handlers.GetFirst();
     while (node)