encconv.cpp: Remove comment about 5 being big enough value for ENC_PER_PLATFORM ...

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

diff --git a/include/wx/image.h b/include/wx/image.h
index 36843a4122bbd4f00cb4bf3dfc7ef5a9f2f6ecab..aa801035f6242be29b1565adafaff09ea3230e18 100644 (file)
--- a/include/wx/image.h
+++ b/include/wx/image.h
@@ -10,10 +10,6 @@
 #ifndef _WX_IMAGE_H_
 #define _WX_IMAGE_H_
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma interface "image.h"
-#endif
-
 #include "wx/defs.h"
 #include "wx/object.h"
 #include "wx/string.h"
@@ -157,6 +153,29 @@ public:
 class WXDLLEXPORT wxImage: public wxObject
 {
 public:
+    // red, green and blue are 8 bit unsigned integers in the range of 0..255
+    // We use the identifier RGBValue instead of RGB, since RGB is #defined
+    class RGBValue
+    {
+    public:
+      RGBValue(unsigned char r=0, unsigned char g=0, unsigned char b=0)
+        : red(r), green(g), blue(b) {}
+        unsigned char red;
+        unsigned char green;
+        unsigned char blue;
+    };
+
+    // hue, saturation and value are doubles in the range 0.0..1.0
+    class HSVValue
+    {
+    public:
+        HSVValue(double h=0.0, double s=0.0, double v=0.0)
+            : hue(h), saturation(s), value(v) {}
+        double hue;
+        double saturation;
+        double value;
+    };
+
     wxImage(){}
     wxImage( int width, int height, bool clear = true );
     wxImage( int width, int height, unsigned char* data, bool static_data = false );
@@ -171,9 +190,6 @@ public:
     wxImage( wxInputStream& stream, const wxString& mimetype, int index = -1 );
 #endif // wxUSE_STREAMS
 
-    wxImage( const wxImage& image );
-    wxImage( const wxImage* image );
-
     bool Create( int width, int height, bool clear = true );
     bool Create( int width, int height, unsigned char* data, bool static_data = false );
     bool Create( int width, int height, unsigned char* data, unsigned char* alpha, bool static_data = false );
@@ -222,6 +238,10 @@ public:
     void Replace( unsigned char r1, unsigned char g1, unsigned char b1,
                   unsigned char r2, unsigned char g2, unsigned char b2 );
 
+    // Convert to greyscale image. Uses the luminance component (Y) of the image.
+    // The luma value (YUV) is calculated using (R * lr) + (G * lg) + (B * lb), defaults to ITU-T BT.601
+    wxImage ConvertToGreyscale( double lr = 0.299, double lg = 0.587, double lb = 0.114 ) const;
+
     // convert to monochrome image (<r,g,b> will be replaced by white,
     // everything else by black)
     wxImage ConvertToMono( unsigned char r, unsigned char g, unsigned char b ) const;
@@ -337,12 +357,9 @@ public:
     // Returned value: # of entries in the histogram
     unsigned long ComputeHistogram( wxImageHistogram &h ) const;
 
-    wxImage& operator = (const wxImage& image)
-    {
-        if ( (*this) != image )
-            Ref(image);
-        return *this;
-    }
+    // Rotates the hue of each pixel of the image. angle is a double in the range
+    // -1.0..1.0 where -1.0 is -360 degrees and 1.0 is 360 degrees
+    void RotateHue(double angle);
 
     bool operator == (const wxImage& image) const
         { return m_refData == image.m_refData; }
@@ -363,6 +380,10 @@ public:
     static void CleanUpHandlers();
     static void InitStandardHandlers();
 
+    static HSVValue RGBtoHSV(const RGBValue& rgb);
+    static RGBValue HSVtoRGB(const HSVValue& hsv);
+
+
 protected:
     static wxList   sm_handlers;