Added ComputeHistogram

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

diff --git a/include/wx/image.h b/include/wx/image.h
index 53618a1e19ce9eb80ee8fc509653caf03bed8026..04c131e040d4350dd0798ece799fe47de03b4a6e 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
 
 //-----------------------------------------------------------------------------
@@ -35,7 +35,19 @@ class WXDLLEXPORT wxPNGHandler;
 #if wxUSE_LIBJPEG
 class WXDLLEXPORT wxJPEGHandler;
 #endif
+#if wxUSE_LIBTIFF
+class WXDLLEXPORT wxTIFFHandler;
+#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;
 
 //-----------------------------------------------------------------------------
@@ -44,26 +56,33 @@ class WXDLLEXPORT wxImage;
 
 class WXDLLEXPORT wxImageHandler: public wxObject
 {
-  DECLARE_DYNAMIC_CLASS(wxImageHandler)
+  DECLARE_CLASS(wxImageHandler)
 
 public:
   wxImageHandler() { m_name = ""; m_extension = ""; m_type = 0; }
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
   virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  
+  virtual int GetImageCount( wxInputStream& stream );
+
+  bool CanRead( wxInputStream& stream ) { return DoCanRead(stream); }
+  bool CanRead( const wxString& name );
 #endif
 
-  inline void SetName(const wxString& name) { m_name = name; }
-  inline void SetExtension(const wxString& ext) { m_extension = ext; }
-  inline void SetType(long type) { m_type = type; }
-  inline void SetMimeType(const wxString& type) { m_mime = type; }
-  inline wxString GetName() const { return m_name; }
-  inline wxString GetExtension() const { return m_extension; }
-  inline long GetType() const { return m_type; }
-  inline wxString GetMimeType() const { return m_mime; }
+  void SetName(const wxString& name) { m_name = name; }
+  void SetExtension(const wxString& ext) { m_extension = ext; }
+  void SetType(long type) { m_type = type; }
+  void SetMimeType(const wxString& type) { m_mime = type; }
+  wxString GetName() const { return m_name; }
+  wxString GetExtension() const { return m_extension; }
+  long GetType() const { return m_type; }
+  wxString GetMimeType() const { return m_mime; }
 
 protected:
+  virtual bool DoCanRead( wxInputStream& stream ) = 0;
+
   wxString  m_name;
   wxString  m_extension;
   wxString  m_mime;
@@ -91,8 +110,9 @@ public:
   };
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
   virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool DoCanRead( wxInputStream& stream );
 #endif
 };
 #endif
@@ -117,8 +137,37 @@ public:
   };
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
   virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool DoCanRead( wxInputStream& stream );
+#endif
+};
+#endif
+
+//-----------------------------------------------------------------------------
+// wxTIFFHandler
+//-----------------------------------------------------------------------------
+
+#if wxUSE_LIBTIFF
+class WXDLLEXPORT wxTIFFHandler: public wxImageHandler
+{
+  DECLARE_DYNAMIC_CLASS(wxTIFFHandler)
+
+public:
+
+  inline wxTIFFHandler()
+  {
+      m_name = "TIFF file";
+      m_extension = "tif";
+      m_type = wxBITMAP_TYPE_TIF;
+      m_mime = "image/tiff";
+  };
+
+#if wxUSE_STREAMS
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
+  virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool DoCanRead( wxInputStream& stream );
+  virtual int GetImageCount( wxInputStream& stream );
 #endif
 };
 #endif
@@ -142,7 +191,8 @@ public:
   };
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
+  virtual bool DoCanRead( wxInputStream& stream );
 #endif
 };
 
@@ -150,6 +200,8 @@ public:
 // wxGIFHandler
 //-----------------------------------------------------------------------------
 
+#if wxUSE_GIF
+
 class WXDLLEXPORT wxGIFHandler : public wxImageHandler
 {
   DECLARE_DYNAMIC_CLASS(wxGIFHandler)
@@ -165,15 +217,81 @@ public:
   };
 
 #if wxUSE_STREAMS
-  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE );
+  virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
   virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool DoCanRead( wxInputStream& stream );
 #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, int index=0 );
+  virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool DoCanRead( wxInputStream& stream );
+#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, int index=0 );
+  virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
+  virtual bool DoCanRead( wxInputStream& stream );
+#endif // wxUSE_STREAMS
+};
+#endif // wxUSE_PCX
 
 //-----------------------------------------------------------------------------
 // wxImage
 //-----------------------------------------------------------------------------
 
+
+// GRG: Dic/99
+class WXDLLEXPORT wxHNode
+{
+public:
+    unsigned long index;
+    unsigned long value;
+};
+
+
 class WXDLLEXPORT wxImage: public wxObject
 {
   DECLARE_DYNAMIC_CLASS(wxImage)
@@ -200,6 +318,9 @@ 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;
 
@@ -212,10 +333,12 @@ public:
   unsigned char GetGreen( int x, int y );
   unsigned char GetBlue( int x, int y );
 
+  static bool CanRead( const wxString& name );
   virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_ANY );
   virtual bool LoadFile( const wxString& name, const wxString& mimetype );
 
 #if wxUSE_STREAMS
+  static bool CanRead( wxInputStream& stream );
   virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY );
   virtual bool LoadFile( wxInputStream& stream, const wxString& mimetype );
 #endif
@@ -266,12 +389,18 @@ public:
   static void CleanUpHandlers();
   static void InitStandardHandlers();
 
+  // GRG: Dic/99
+  unsigned long ComputeHistogram( wxHashTable &h );
+
+
 protected:
 
   static wxList sm_handlers;
 
 };
 
+extern void WXDLLEXPORT wxInitAllImageHandlers();
+
 #endif
   // _WX_IMAGE_H_