adding measuring contexts, streamlining printing code

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

diff --git a/include/wx/colour.h b/include/wx/colour.h
index b736ad8bbed48bc6a3e445ef80af6d6fbeb41b52..9c3cea2c90bb6559a2b2e888ec312b6ae89bf661 100644 (file)
--- a/include/wx/colour.h
+++ b/include/wx/colour.h
@@ -1,8 +1,8 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        wx/colour.h
-// Purpose:     Includes platform-specific wxColour file
+// Purpose:     wxColourBase definition
 // Author:      Julian Smart
-// Modified by:
+// Modified by: Francesco Montorsi
 // Created:
 // RCS-ID:      $Id$
 // Copyright:   Julian Smart
@@ -13,30 +13,142 @@
 #define _WX_COLOUR_H_BASE_
 
 #include "wx/defs.h"
+#include "wx/gdiobj.h"
+
+
+class WXDLLEXPORT wxColour;
+
+// 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( ChannelType red, ChannelType green, ChannelType blue,           \
+              ChannelType alpha = wxALPHA_OPAQUE )                            \
+        { Set(red, green, blue, alpha); }                                     \
+    wxColour( unsigned long colRGB ) { Set(colRGB); }                         \
+    wxColour(const wxString &colourName) { Set(colourName); }                 \
+    wxColour(const wxChar *colourName) { Set(colourName); }
+
+
+// flags for wxColour -> wxString conversion (see wxColour::GetAsString)
+#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
+
+
+const unsigned char wxALPHA_TRANSPARENT = 0;
+const unsigned char wxALPHA_OPAQUE = 0xff;
+
+// ----------------------------------------------------------------------------
+// wxVariant support
+// ----------------------------------------------------------------------------
+
+#if wxUSE_VARIANT
+#include "wx/variant.h"
+DECLARE_VARIANT_OBJECT_EXPORTED(wxColour,WXDLLEXPORT)
+#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
+{
+public:
+    // type of a single colour component
+    typedef unsigned char ChannelType;
+
+    wxColourBase() {}
+    virtual ~wxColourBase() {}
+
+
+    // Set() functions
+    // ---------------
+
+    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 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((ChannelType)colRGB,
+            (ChannelType)(colRGB >> 8),
+            (ChannelType)(colRGB >> 16));
+    }
+
+
+
+    // accessors
+    // ---------
+
+    virtual bool Ok() const { return IsOk(); }
+    virtual bool IsOk() 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;
+
+
+
+    // old, deprecated
+    // ---------------
+
+#if WXWIN_COMPATIBILITY_2_6
+    wxDEPRECATED( static wxColour CreateByName(const wxString& name) );
+    wxDEPRECATED( void InitFromName(const wxString& col) );
+#endif
+
+protected:
+    virtual void
+    InitRGBA(ChannelType r, ChannelType g, ChannelType b, ChannelType a) = 0;
+
+    virtual bool FromString(const wxChar *s);
+};
+
+
 
 #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/mac/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_