X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d9c2755704058b73567f30d28bd7df2fe5c4c591..3d4e20dd0baa3399b72b66a12ddcb0f898c43989:/include/wx/colour.h

diff --git a/include/wx/colour.h b/include/wx/colour.h
index df13b09baf..e3dd34ee80 100644
--- a/include/wx/colour.h
+++ b/include/wx/colour.h
@@ -15,17 +15,23 @@
 #include "wx/defs.h"
 #include "wx/gdiobj.h"
 
-
-// the standard wxColour constructors;
-// this macro avoids to repeat these lines across all colour.h files, since
-// Set() is a virtual function and thus cannot be called by wxColourBase
-// constructors
-#define DEFINE_STD_WXCOLOUR_CONSTRUCTORS                                    \
-    wxColour( unsigned char red, unsigned char green, unsigned char blue )  \
-        { Set(red, green, blue); }                                          \
-    wxColour( unsigned long colRGB ) { Set(colRGB); }                       \
-    wxColour(const wxString &colourName) { Set(colourName); }               \
-    wxColour(const wxChar *colourName) { Set(colourName); }
+class WXDLLIMPEXP_FWD_CORE wxColour;
+
+// A macro to define the standard wxColour constructors:
+//
+// It avoids the need to repeat these lines across all colour.h files, since
+// Set() is a virtual function and thus cannot be called by wxColourBase ctors
+#define DEFINE_STD_WXCOLOUR_CONSTRUCTORS                                      \
+    wxColour() { Init(); }                                                    \
+    wxColour(ChannelType red,                                                 \
+             ChannelType green,                                               \
+             ChannelType blue,                                                \
+             ChannelType alpha = wxALPHA_OPAQUE)                              \
+        { Init(); Set(red, green, blue, alpha); }                             \
+    wxColour(unsigned long colRGB) { Init(); Set(colRGB    ); }               \
+    wxColour(const wxString& colourName) { Init(); Set(colourName); }         \
+    wxColour(const char *colourName) { Init(); Set(colourName); }             \
+    wxColour(const wchar_t *colourName) { Init(); Set(colourName); }
 
 
 // flags for wxColour -> wxString conversion (see wxColour::GetAsString)
@@ -34,22 +40,48 @@
 #define wxC2S_HTML_SYNTAX       4   // return colour in #rrggbb syntax
 
 
-class WXDLLEXPORT wxColour;
+const unsigned char wxALPHA_TRANSPARENT = 0;
+const unsigned char wxALPHA_OPAQUE = 0xff;
+
+// a valid but fully transparent colour
+#define wxTransparentColour wxColour(0, 0, 0, wxALPHA_TRANSPARENT)
+#define wxTransparentColor wxTransparentColour
+
+// ----------------------------------------------------------------------------
+// wxVariant support
+// ----------------------------------------------------------------------------
 
+#if wxUSE_VARIANT
+#include "wx/variant.h"
+DECLARE_VARIANT_OBJECT_EXPORTED(wxColour,WXDLLIMPEXP_CORE)
+#endif
 
 //-----------------------------------------------------------------------------
 // wxColourBase: this class has no data members, just some functions to avoid
 //               code redundancy in all native wxColour implementations
 //-----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxColourBase : public wxGDIObject
-{
-protected:
-
-    virtual void InitWith(unsigned char red, unsigned char green, unsigned char blue) = 0;
-    virtual bool FromString(const wxChar *);
+/*  Transition from wxGDIObject to wxObject is incomplete.  If your port does
+    not need the wxGDIObject machinery to handle colors, please add it to the
+    list of ports which do not need it.
+ */
+#if defined( __WXMAC__ ) || defined( __WXMSW__ ) || defined( __WXPM__ ) || defined( __WXCOCOA__ )
+#define wxCOLOUR_IS_GDIOBJECT 0
+#else
+#define wxCOLOUR_IS_GDIOBJECT 1
+#endif
 
+class WXDLLIMPEXP_CORE wxColourBase : public
+#if wxCOLOUR_IS_GDIOBJECT
+    wxGDIObject
+#else
+    wxObject
+#endif
+{
 public:
+    // type of a single colour component
+    typedef unsigned char ChannelType;
+
     wxColourBase() {}
     virtual ~wxColourBase() {}
 
@@ -57,23 +89,23 @@ public:
     // Set() functions
     // ---------------
 
-    void Set(unsigned char red, unsigned char green, unsigned char blue)
-        { InitWith(red,green,blue); }
+    void Set(ChannelType red,
+             ChannelType green,
+             ChannelType blue,
+             ChannelType alpha = wxALPHA_OPAQUE)
+        { InitRGBA(red, green, blue, alpha); }
 
     // implemented in colourcmn.cpp
-    bool Set(const wxChar *str)
-        { return FromString(str); }
-
     bool Set(const wxString &str)
-        { return Set((const wxChar *)str); }
+        { return FromString(str); }
 
     void Set(unsigned long colRGB)
     {
         // we don't need to know sizeof(long) here because we assume that the three
         // least significant bytes contain the R, G and B values
-        Set((unsigned char)colRGB,
-            (unsigned char)(colRGB >> 8),
-            (unsigned char)(colRGB >> 16));
+        Set((ChannelType)(0xFF & colRGB),
+            (ChannelType)(0xFF & (colRGB >> 8)),
+            (ChannelType)(0xFF & (colRGB >> 16)));
     }
 
 
@@ -81,16 +113,59 @@ public:
     // accessors
     // ---------
 
-    virtual bool Ok() const = 0;
-
-    virtual unsigned char Red() const = 0;
-    virtual unsigned char Green() const = 0;
-    virtual unsigned char Blue() const = 0;
+    virtual ChannelType Red() const = 0;
+    virtual ChannelType Green() const = 0;
+    virtual ChannelType Blue() const = 0;
+    virtual ChannelType Alpha() const
+        { return wxALPHA_OPAQUE ; }
 
     // implemented in colourcmn.cpp
     virtual wxString GetAsString(long flags = wxC2S_NAME | wxC2S_CSS_SYNTAX) const;
 
+    void SetRGB(wxUint32 colRGB)
+    {
+        Set((ChannelType)(0xFF & colRGB),
+            (ChannelType)(0xFF & (colRGB >> 8)),
+            (ChannelType)(0xFF & (colRGB >> 16)));
+    }
+
+    void SetRGBA(wxUint32 colRGBA)
+    {
+        Set((ChannelType)(0xFF & colRGBA),
+            (ChannelType)(0xFF & (colRGBA >> 8)),
+            (ChannelType)(0xFF & (colRGBA >> 16)),
+            (ChannelType)(0xFF & (colRGBA >> 24)));
+    }
+
+    wxUint32 GetRGB() const
+        { return Red() | (Green() << 8) | (Blue() << 16); }
+
+    wxUint32 GetRGBA() const
+        { return Red() | (Green() << 8) | (Blue() << 16) | (Alpha() << 24); }
 
+#if !wxCOLOUR_IS_GDIOBJECT
+    virtual bool IsOk() const= 0;
+
+    // older version, for backwards compatibility only (but not deprecated
+    // because it's still widely used)
+    bool Ok() const { return IsOk(); }
+#endif
+
+    // manipulation
+    // ------------
+
+    // These methods are static because they are mostly used
+    // within tight loops (where we don't want to instantiate wxColour's)
+
+    static void          MakeMono    (unsigned char* r, unsigned char* g, unsigned char* b, bool on);
+    static void          MakeDisabled(unsigned char* r, unsigned char* g, unsigned char* b, unsigned char brightness = 255);
+    static void          MakeGrey    (unsigned char* r, unsigned char* g, unsigned char* b); // integer version
+    static void          MakeGrey    (unsigned char* r, unsigned char* g, unsigned char* b,
+                                      double weight_r, double weight_g, double weight_b); // floating point version
+    static unsigned char AlphaBlend  (unsigned char fg, unsigned char bg, double alpha);
+    static void          ChangeLightness(unsigned char* r, unsigned char* g, unsigned char* b, int ialpha);
+
+    wxColour ChangeLightness(int ialpha) const;
 
     // old, deprecated
     // ---------------
@@ -99,33 +174,68 @@ public:
     wxDEPRECATED( static wxColour CreateByName(const wxString& name) );
     wxDEPRECATED( void InitFromName(const wxString& col) );
 #endif
+
+protected:
+    // Some ports need Init() and while we don't, provide a stub so that the
+    // ports which don't need it are not forced to define it
+    void Init() { }
+
+    virtual void
+    InitRGBA(ChannelType r, ChannelType g, ChannelType b, ChannelType a) = 0;
+
+    virtual bool FromString(const wxString& s);
+
+#if wxCOLOUR_IS_GDIOBJECT
+    // wxColour doesn't use reference counted data (at least not in all ports)
+    // so provide stubs for the functions which need to be defined if we do use
+    // them
+    virtual wxGDIRefData *CreateGDIRefData() const
+    {
+        wxFAIL_MSG( "must be overridden if used" );
+
+        return NULL;
+    }
+
+    virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *WXUNUSED(data)) const
+    {
+        wxFAIL_MSG( "must be overridden if used" );
+
+        return NULL;
+    }
+#endif
 };
 
 
+// wxColour <-> wxString utilities, used by wxConfig, defined in colourcmn.cpp
+WXDLLIMPEXP_CORE wxString wxToString(const wxColourBase& col);
+WXDLLIMPEXP_CORE bool wxFromString(const wxString& str, wxColourBase* col);
+
+
 
 #if defined(__WXPALMOS__)
-#include "wx/palmos/colour.h"
+    #include "wx/generic/colour.h"
 #elif defined(__WXMSW__)
-#include "wx/msw/colour.h"
+    #include "wx/msw/colour.h"
 #elif defined(__WXMOTIF__)
-#include "wx/motif/colour.h"
+    #include "wx/motif/colour.h"
 #elif defined(__WXGTK20__)
-#include "wx/gtk/colour.h"
+    #include "wx/gtk/colour.h"
 #elif defined(__WXGTK__)
-#include "wx/gtk1/colour.h"
+    #include "wx/gtk1/colour.h"
 #elif defined(__WXMGL__)
-#include "wx/mgl/colour.h"
+    #include "wx/generic/colour.h"
+#elif defined(__WXDFB__)
+    #include "wx/generic/colour.h"
 #elif defined(__WXX11__)
-#include "wx/x11/colour.h"
+    #include "wx/x11/colour.h"
 #elif defined(__WXMAC__)
-#include "wx/mac/colour.h"
+    #include "wx/osx/colour.h"
 #elif defined(__WXCOCOA__)
-#include "wx/cocoa/colour.h"
+    #include "wx/cocoa/colour.h"
 #elif defined(__WXPM__)
-#include "wx/os2/colour.h"
+    #include "wx/os2/colour.h"
 #endif
 
 #define wxColor wxColour
 
-#endif
-    // _WX_COLOUR_H_BASE_
+#endif // _WX_COLOUR_H_BASE_