X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4b6b4dfcf48af89d910df5a21786fbcd02db8c97..cfa822b8f1736a137a4189470ec90f4b95095381:/include/wx/image.h?ds=inline

diff --git a/include/wx/image.h b/include/wx/image.h
index 05cee7069d..cf69aa743a 100644
--- a/include/wx/image.h
+++ b/include/wx/image.h
@@ -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
 //-----------------------------------------------------------------------------
@@ -76,16 +79,25 @@ 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:
@@ -158,7 +170,7 @@ 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);
@@ -175,12 +187,12 @@ public:
     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, 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;
@@ -213,8 +225,15 @@ 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)
     {