Avoid needless second string conversion when adding files to memory FS.

[wxWidgets.git] / interface / wx / colour.h

diff --git a/interface/wx/colour.h b/interface/wx/colour.h
index d6f3fa5f828f35f43d9792dce25c861667a2419f..bf051c3ff1fc9e85f1d5a3f617a980074b57becc 100644 (file)
--- a/interface/wx/colour.h
+++ b/interface/wx/colour.h
@@ -3,7 +3,7 @@
 // Purpose:     interface of wxColour
 // Author:      wxWidgets team
 // RCS-ID:      $Id$
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 
@@ -13,12 +13,16 @@
 
     @{
 */
-#define wxC2S_NAME              1   //!< Return colour name, when possible.
-#define wxC2S_CSS_SYNTAX        2   //!< Return colour in "rgb(r,g,b)" syntax.
-#define wxC2S_HTML_SYNTAX       4   //!< Return colour in "#rrggbb" syntax.
+enum {
+    wxC2S_NAME             = 1,   // return colour name, when possible
+    wxC2S_CSS_SYNTAX       = 2,   // return colour in rgb(r,g,b) syntax
+    wxC2S_HTML_SYNTAX      = 4    // return colour in #rrggbb syntax
+};
 
 //@}
 
+const unsigned char wxALPHA_TRANSPARENT = 0;
+const unsigned char wxALPHA_OPAQUE = 0xff;
 
 /**
     @class wxColour
@@ -37,6 +41,7 @@
 
     @stdobjects
     - ::wxNullColour - An empty, invalid colour.
+    - ::wxTransparentColour - Valid but fully transparent colour (new in 2.9.1).
     - ::wxBLACK
     - ::wxBLUE
     - ::wxCYAN
@@ -77,6 +82,12 @@ public:
     */
     wxColour(const wxString& colourName);
 
+    /**
+        @param colRGB
+            A packed RGB value.
+    */
+    wxColour(unsigned long colRGB);
+    
     /**
         Copy constructor.
     */
@@ -154,7 +165,7 @@ public:
         On X, an allocated pixel value is returned.
         If the pixel is invalid (on X, unallocated), @c -1 is returned.
     */
-    int GetPixel() const;
+    wxIntPtr GetPixel() const;
 
     /**
         Returns the green intensity.
@@ -176,13 +187,12 @@ public:
     /**
         Sets the RGB intensity values using the given values (first overload),
         extracting them from the packed long (second overload), using the given
-        string (third overloard).
+        string (third overload).
 
         When using third form, Set() accepts: colour names (those listed in
-        wxTheColourDatabase()), the CSS-like @c "rgb(r,g,b)" or
-        @c "rgba(r,g,b,a)" syntax (case insensitive) and the HTML-like syntax
-        (i.e. @c "#" followed by 6 hexadecimal digits for red, green, blue
-        components).
+        wxColourDatabase), the CSS-like @c "rgb(r,g,b)" or @c "rgba(r,g,b,a)" syntax 
+        (case insensitive) and the HTML-like syntax: @c "#" followed by 6 hexadecimal 
+        digits for red, green, blue components.
 
         Returns @true if the conversion was successful, @false otherwise.
 
@@ -213,12 +223,61 @@ public:
         colours and alpha values.
     */
     bool operator ==(const wxColour& colour) const;
+
+    /**
+        Assign 0 or 255 to rgb out parameters.
+        @since 2.9.0
+    */
+    static void MakeMono(unsigned char* r, unsigned char* g, unsigned char* b, bool on);
+    
+    /**
+        Create a disabled (dimmed) colour from (in/out) rgb parameters.
+        @since 2.9.0
+    */
+    static void MakeDisabled(unsigned char* r, unsigned char* g, unsigned char* b, unsigned char brightness = 255);
+    
+    /**
+        Create a grey colour from (in/out) rgb parameters using integer arithmetic.
+        @since 2.9.0
+    */
+    static void MakeGrey(unsigned char* r, unsigned char* g, unsigned char* b);
+    
+    /**
+        Create a grey colour from (in/out) rgb parameters using floating point arithmetic.
+        Defaults to using the standard ITU-T BT.601 when converting to YUV, where every pixel equals
+        (R * @a weight_r) + (G * @a weight_g) + (B * @a weight_b).
+        @since 2.9.0
+    */
+    static void MakeGrey(unsigned char* r, unsigned char* g, unsigned char* b,
+                         double weight_r, double weight_g, double weight_b);
+
+    /**
+        Blend colour, taking alpha into account.
+        @since 2.9.0
+    */
+    static unsigned char AlphaBlend(unsigned char fg, unsigned char bg, double alpha);
+    
+    /**
+        ChangeLightness() is a utility function that simply darkens
+        or lightens a color, based on the specified percentage
+        ialpha of 0 would be completely black, 200 completely white
+        an ialpha of 100 returns the same colour
+        @since 2.9.0
+    */
+    static void ChangeLightness(unsigned char* r, unsigned char* g, unsigned char* b, int ialpha);
+
+    /**
+        wxColour wrapper for ChangeLightness(r,g,b,ialpha).
+        @since 2.9.0
+    */
+    wxColour ChangeLightness(int ialpha) const;
 };
 
 
 /** @name Predefined colors. */
 //@{
 wxColour wxNullColour;
+wxColour wxTransparentColour;
 wxColour* wxBLACK;
 wxColour* wxBLUE;
 wxColour* wxCYAN;