wxRegion::IsEmpty() added

[wxWidgets.git] / include / wx / image.h

diff --git a/include/wx/image.h b/include/wx/image.h
index 7db3f34479e8fe8f0f671bdd3af52318f1a96e73..e4d78863ab2df78fab0a09fcd878aeab2d280acf 100644 (file)
--- a/include/wx/image.h
+++ b/include/wx/image.h
@@ -21,7 +21,7 @@
 #include "wx/bitmap.h"
 
 #if wxUSE_STREAMS
-    #include "wx/stream.h"
+#  include "wx/stream.h"
 #endif
 
 //-----------------------------------------------------------------------------
@@ -36,6 +36,15 @@ class WXDLLEXPORT wxPNGHandler;
 class WXDLLEXPORT wxJPEGHandler;
 #endif
 class WXDLLEXPORT wxBMPHandler;
+#if wxUSE_GIF
+class WXDLLEXPORT wxGIFHandler;
+#endif
+#if wxUSE_PNM
+class WXDLLEXPORT wxPNMHandler;
+#endif
+#if wxUSE_PCX
+class WXDLLEXPORT wxPCXHandler;
+#endif
 class WXDLLEXPORT wxImage;
 
 //-----------------------------------------------------------------------------
@@ -50,8 +59,11 @@ public:
   wxImageHandler() { m_name = ""; m_extension = ""; m_type = 0; }
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxImage *image, wxInputStream& stream );
-  virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+
+  virtual bool CanRead( wxInputStream& stream );
+  virtual bool CanRead( const wxString& name );
 #endif
 
   inline void SetName(const wxString& name) { m_name = name; }
@@ -91,8 +103,12 @@ public:
   };
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxImage *image, wxInputStream& stream );
-  virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool CanRead( wxInputStream& stream );
+private:
+   // hiding base class virtuals again!
+  inline bool CanRead( const wxString& name ) { return(wxImageHandler::CanRead(name)); };
 #endif
 };
 #endif
@@ -117,8 +133,12 @@ public:
   };
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxImage *image, wxInputStream& stream );
-  virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool CanRead( wxInputStream& stream );
+private:
+   // hiding base class virtuals again!
+  inline bool CanRead( const wxString& name ) { return(wxImageHandler::CanRead(name)); };
 #endif
 };
 #endif
@@ -142,7 +162,11 @@ public:
   };
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxImage *image, wxInputStream& stream );
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool CanRead( wxInputStream& stream );
+private:
+   // hiding base class virtuals again!
+  inline bool CanRead( const wxString& name ) { return(wxImageHandler::CanRead(name)); };
 #endif
 };
 
@@ -150,6 +174,8 @@ public:
 // wxGIFHandler
 //-----------------------------------------------------------------------------
 
+#if wxUSE_GIF
+
 class WXDLLEXPORT wxGIFHandler : public wxImageHandler
 {
   DECLARE_DYNAMIC_CLASS(wxGIFHandler)
@@ -165,10 +191,72 @@ public:
   };
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxImage *image, wxInputStream& stream );
-  virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool CanRead( wxInputStream& stream );
+private:
+   // hiding base class virtuals again!
+  inline bool CanRead( const wxString& name ) { return(wxImageHandler::CanRead(name)); };
+#endif
+};
+#endif
+
+//-----------------------------------------------------------------------------
+// wxPNMHandler
+//-----------------------------------------------------------------------------
+
+#if wxUSE_PNM
+class WXDLLEXPORT wxPNMHandler : public wxImageHandler
+{
+  DECLARE_DYNAMIC_CLASS(wxPNMHandler)
+
+public:
+
+  inline wxPNMHandler()
+  {
+      m_name = "PNM file";
+      m_extension = "pnm";
+      m_type = wxBITMAP_TYPE_PNM;
+      m_mime = "image/pnm";
+  };
+
+#if wxUSE_STREAMS
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool CanRead( wxInputStream& stream );
+private:
+   // hiding base class virtuals again!
+  inline bool CanRead( const wxString& name ) { return(wxImageHandler::CanRead(name)); };
 #endif
 };
+#endif
+
+//-----------------------------------------------------------------------------
+// wxPCXHandler
+//-----------------------------------------------------------------------------
+
+#if wxUSE_PCX
+class WXDLLEXPORT wxPCXHandler : public wxImageHandler
+{
+  DECLARE_DYNAMIC_CLASS(wxPCXHandler)
+
+public:
+
+  inline wxPCXHandler()
+  {
+      m_name = "PCX file";
+      m_extension = "pcx";
+      m_type = wxBITMAP_TYPE_PCX;
+      m_mime = "image/pcx";
+  };
+
+#if wxUSE_STREAMS
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool CanRead( wxInputStream& stream );
+#endif
+};
+#endif
 
 //-----------------------------------------------------------------------------
 // wxImage
@@ -184,8 +272,8 @@ public:
 
   wxImage();
   wxImage( int width, int height );
-  wxImage( const wxString& name, long type = wxBITMAP_TYPE_PNG );
-  wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_PNG );
+  wxImage( const wxString& name, long type = wxBITMAP_TYPE_ANY );
+  wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY );
   wxImage( const wxString& name, const wxString& mimetype );
   wxImage( wxInputStream& stream, const wxString& mimetype );
 
@@ -200,6 +288,9 @@ public:
   void Create( int width, int height );
   void Destroy();
 
+  // return the new image with size width*height
+  wxImage GetSubImage( const wxRect& ) const;
+
   // return the new image with size width*height
   wxImage Scale( int width, int height ) const;
 
@@ -212,11 +303,11 @@ public:
   unsigned char GetGreen( int x, int y );
   unsigned char GetBlue( int x, int y );
 
-  virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_PNG );
+  virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_ANY );
   virtual bool LoadFile( const wxString& name, const wxString& mimetype );
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_PNG );
+  virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY );
   virtual bool LoadFile( wxInputStream& stream, const wxString& mimetype );
 #endif
 
@@ -265,13 +356,15 @@ public:
 
   static void CleanUpHandlers();
   static void InitStandardHandlers();
-
+ 
 protected:
 
   static wxList sm_handlers;
 
 };
 
+extern void wxInitAllImageHandlers();
+
 #endif
   // _WX_IMAGE_H_