Added wxTreeCtrl::GetItemParent to deprecate GetParent.

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

diff --git a/include/wx/image.h b/include/wx/image.h
index af8b9995fb2309b1754b5a86e83523cbb06c59ca..ea439aab620057c79f0b619f2faa852ecf212f2c 100644 (file)
--- a/include/wx/image.h
+++ b/include/wx/image.h
@@ -10,7 +10,7 @@
 #ifndef _WX_IMAGE_H_
 #define _WX_IMAGE_H_
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(__APPLE__)
 #pragma interface "image.h"
 #endif
 
@@ -19,6 +19,7 @@
 #include "wx/string.h"
 #include "wx/gdicmn.h"
 #include "wx/bitmap.h"
+#include "wx/hashmap.h"
 
 #if wxUSE_STREAMS
 #  include "wx/stream.h"
@@ -26,6 +27,8 @@
 
 #if wxUSE_IMAGE
 
+#define wxIMAGE_OPTION_FILENAME wxString(_T("FileName"))
+
 //-----------------------------------------------------------------------------
 // classes
 //-----------------------------------------------------------------------------
@@ -40,15 +43,17 @@ class WXDLLEXPORT wxImage;
 class WXDLLEXPORT wxImageHandler: public wxObject
 {
 public:
-    wxImageHandler() { m_name = ""; m_extension = ""; m_type = 0; }
+    wxImageHandler()
+        : m_name(wxT("")), m_extension(wxT("")), m_mime(), m_type(0)
+        { }
 
 #if wxUSE_STREAMS
-    virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=0 );
+    virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=TRUE, int index=-1 );
     virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=TRUE );
 
     virtual int GetImageCount( wxInputStream& stream );
 
-    bool CanRead( wxInputStream& stream ) { return DoCanRead(stream); }
+    bool CanRead( wxInputStream& stream ) { return CallDoCanRead(stream); }
     bool CanRead( const wxString& name );
 #endif // wxUSE_STREAMS
 
@@ -64,6 +69,9 @@ public:
 protected:
 #if wxUSE_STREAMS
     virtual bool DoCanRead( wxInputStream& stream ) = 0;
+
+    // save the stream position, call DoCanRead() and restore the position
+    bool CallDoCanRead(wxInputStream& stream);
 #endif // wxUSE_STREAMS
 
     wxString  m_name;
@@ -76,35 +84,44 @@ private:
 };
 
 //-----------------------------------------------------------------------------
-// wxImage
+// wxImageHistogram
 //-----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxHNode
+class WXDLLEXPORT wxImageHistogramEntry
 {
 public:
+    wxImageHistogramEntry() : index(0), value(0) {}
     unsigned long index;
     unsigned long value;
 };
 
+WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry,
+                             wxIntegerHash, wxIntegerEqual,
+                             wxImageHistogram);
+
+//-----------------------------------------------------------------------------
+// wxImage
+//-----------------------------------------------------------------------------
+
 class WXDLLEXPORT wxImage: public wxObject
 {
 public:
     wxImage();
     wxImage( int width, int height );
     wxImage( int width, int height, unsigned char* data, bool static_data = FALSE );
-    wxImage( const wxString& name, long type = wxBITMAP_TYPE_ANY );
-    wxImage( const wxString& name, const wxString& mimetype );
+    wxImage( const wxString& name, long type = wxBITMAP_TYPE_ANY, int index = -1 );
+    wxImage( const wxString& name, const wxString& mimetype, int index = -1 );
 
 #if wxUSE_STREAMS
-    wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY );
-    wxImage( wxInputStream& stream, const wxString& mimetype );
+    wxImage( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY, int index = -1 );
+    wxImage( wxInputStream& stream, const wxString& mimetype, int index = -1 );
 #endif // wxUSE_STREAMS
 
     wxImage( const wxImage& image );
     wxImage( const wxImage* image );
 
-#if wxUSE_GUI
-    // convertion to/from wxBitmap (deprecated, use wxBitmap's methods instead):
+#if WXWIN_COMPATIBILITY_2_2 && wxUSE_GUI
+    // conversion to/from wxBitmap (deprecated, use wxBitmap's methods instead):
     wxImage( const wxBitmap &bitmap );
     wxBitmap ConvertToBitmap() const;
 #ifdef __WXGTK__
@@ -158,27 +175,30 @@ public:
     // RGB values than <startR,startG,startB>
     bool FindFirstUnusedColour( unsigned char *r, unsigned char *g, unsigned char *b,
                                 unsigned char startR = 1, unsigned char startG = 0,
-                                unsigned char startB = 0 );
+                                unsigned char startB = 0 ) const;
     // Set image's mask to the area of 'mask' that has <r,g,b> colour
     bool SetMaskFromImage(const wxImage & mask,
                           unsigned char mr, unsigned char mg, unsigned char mb);
 
     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 );
+    static int GetImageCount( const wxString& name, long type = wxBITMAP_TYPE_ANY );
+    virtual bool LoadFile( const wxString& name, long type = wxBITMAP_TYPE_ANY, int index = -1 );
+    virtual bool LoadFile( const wxString& name, const wxString& mimetype, int index = -1 );
 
 #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 );
+    static int GetImageCount( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY );
+    virtual bool LoadFile( wxInputStream& stream, long type = wxBITMAP_TYPE_ANY, int index = -1 );
+    virtual bool LoadFile( wxInputStream& stream, const wxString& mimetype, int index = -1 );
 #endif
 
-    virtual bool SaveFile( const wxString& name, int type );
-    virtual bool SaveFile( const wxString& name, const wxString& mimetype );
+    virtual bool SaveFile( const wxString& name ) const;
+    virtual bool SaveFile( const wxString& name, int type ) const;
+    virtual bool SaveFile( const wxString& name, const wxString& mimetype ) const;
 
 #if wxUSE_STREAMS
-    virtual bool SaveFile( wxOutputStream& stream, int type );
-    virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype );
+    virtual bool SaveFile( wxOutputStream& stream, int type ) const;
+    virtual bool SaveFile( wxOutputStream& stream, const wxString& mimetype ) const;
 #endif
 
     bool Ok() const;
@@ -211,8 +231,15 @@ public:
     int GetOptionInt(const wxString& name) const;
     bool HasOption(const wxString& name) const;
 
-    unsigned long CountColours( unsigned long stopafter = (unsigned long) -1 );
-    unsigned long ComputeHistogram( wxHashTable &h );
+    unsigned long CountColours( unsigned long stopafter = (unsigned long) -1 ) const;
+
+    // Computes the histogram of the image and fills a hash table, indexed
+    // with integer keys built as 0xRRGGBB, containing wxImageHistogramEntry
+    // objects. Each of them 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.
+    // Returned value: # of entries in the histogram
+    unsigned long ComputeHistogram( wxImageHistogram &h ) const;
 
     wxImage& operator = (const wxImage& image)
     {
@@ -221,9 +248,9 @@ public:
         return *this;
     }
 
-    bool operator == (const wxImage& image)
+    bool operator == (const wxImage& image) const
         { return m_refData == image.m_refData; }
-    bool operator != (const wxImage& image)
+    bool operator != (const wxImage& image) const
         { return m_refData != image.m_refData; }
 
     static wxList& GetHandlers() { return sm_handlers; }
@@ -264,6 +291,7 @@ WXDLLEXPORT_DATA(extern wxImage)    wxNullImage;
 #include "wx/imagtiff.h"
 #include "wx/imagpnm.h"
 #include "wx/imagxpm.h"
+#include "wx/imagiff.h"
 
 #endif // wxUSE_IMAGE