X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9a83f860948059b0273b5cc6d9e43fadad3ebfca..74a8f67d96591cec101def2a7d47c64072aff7fd:/src/common/colourcmn.cpp diff --git a/src/common/colourcmn.cpp b/src/common/colourcmn.cpp index 8fa9c927c2..013b17cee3 100644 --- a/src/common/colourcmn.cpp +++ b/src/common/colourcmn.cpp @@ -30,6 +30,59 @@ IMPLEMENT_VARIANT_OBJECT_EXPORTED(wxColour,WXDLLEXPORT) #endif + +// ---------------------------------------------------------------------------- +// XTI +// ---------------------------------------------------------------------------- + +#if wxUSE_EXTENDED_RTTI + +#include + +template<> void wxStringReadValue(const wxString &s, wxColour &data ) +{ + if ( !data.Set(s) ) + { + wxLogError(_("String To Colour : Incorrect colour specification : %s"), + s.c_str() ); + data = wxNullColour; + } +} + +template<> void wxStringWriteValue(wxString &s, const wxColour &data ) +{ + s = data.GetAsString(wxC2S_HTML_SYNTAX); +} + +wxTO_STRING_IMP( wxColour ) +wxFROM_STRING_IMP( wxColour ) + +wxIMPLEMENT_DYNAMIC_CLASS_WITH_COPY_AND_STREAMERS_XTI( wxColour, wxObject, \ + "wx/colour.h", &wxTO_STRING( wxColour ), &wxFROM_STRING( wxColour )) +//WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImpl) +wxBEGIN_PROPERTIES_TABLE(wxColour) +wxREADONLY_PROPERTY( Red, unsigned char, Red, wxEMPTY_PARAMETER_VALUE, \ + 0 /*flags*/, wxT("Helpstring"), wxT("group")) +wxREADONLY_PROPERTY( Green, unsigned char, Green, wxEMPTY_PARAMETER_VALUE, \ + 0 /*flags*/, wxT("Helpstring"), wxT("group")) +wxREADONLY_PROPERTY( Blue, unsigned char, Blue, wxEMPTY_PARAMETER_VALUE, \ + 0 /*flags*/, wxT("Helpstring"), wxT("group")) +wxEND_PROPERTIES_TABLE() + +wxDIRECT_CONSTRUCTOR_3( wxColour, unsigned char, Red, \ + unsigned char, Green, unsigned char, Blue ) + +wxEMPTY_HANDLERS_TABLE(wxColour) +#else + +#if wxCOLOUR_IS_GDIOBJECT +wxIMPLEMENT_DYNAMIC_CLASS(wxColour, wxGDIObject) +#else +wxIMPLEMENT_DYNAMIC_CLASS(wxColour, wxObject) +#endif + +#endif + // ============================================================================ // wxString <-> wxColour conversions // ============================================================================ @@ -48,10 +101,48 @@ bool wxColourBase::FromString(const wxString& str) alpha = wxALPHA_OPAQUE; if ( str.length() > 3 && (str[3] == wxT('a') || str[3] == wxT('A')) ) { - float a; - // TODO: use locale-independent function - if ( wxSscanf(str.wx_str() + 4, wxT("( %d , %d , %d , %f )"), - &red, &green, &blue, &a) != 4 ) + // We can't use sscanf() for the alpha value as sscanf() uses the + // current locale while the floating point numbers in CSS always + // use point as decimal separator, regardless of locale. So parse + // the tail of the string manually by putting it in a buffer and + // using wxString::ToCDouble() below. Notice that we can't use "%s" + // for this as it stops at white space and we need "%c" to avoid + // this and really get all the rest of the string into the buffer. + + const unsigned len = str.length(); // always big enough + wxCharBuffer alphaBuf(len); + char * const alphaPtr = alphaBuf.data(); + + for ( unsigned n = 0; n < len; n++ ) + alphaPtr[n] = '\0'; + + // Construct the format string which ensures that the last argument + // receives all the rest of the string. + wxString formatStr; + formatStr << wxS("( %d , %d , %d , %") << len << 'c'; + + // Notice that we use sscanf() here because if the string is not + // ASCII it can't represent a valid RGB colour specification anyhow + // and like this we can be sure that %c corresponds to "char *" + // while with wxSscanf() it depends on the type of the string + // passed as first argument: if it is a wide string, then %c + // expects "wchar_t *" matching parameter under MSW for example. + if ( sscanf(str.c_str() + 4, + formatStr.mb_str(), + &red, &green, &blue, alphaPtr) != 4 ) + return false; + + // Notice that we must explicitly specify the length to get rid of + // trailing NULs. + wxString alphaStr(alphaPtr, wxStrlen(alphaPtr)); + if ( alphaStr.empty() || alphaStr.Last() != ')' ) + return false; + + alphaStr.RemoveLast(); + alphaStr.Trim(); + + double a; + if ( !alphaStr.ToCDouble(&a) ) return false; alpha = wxRound(a * 255); @@ -86,13 +177,13 @@ bool wxColourBase::FromString(const wxString& str) // because this place can be called from constructor // and 'this' could not be available yet wxColour clr = wxTheColourDatabase->Find(str); - if (clr.Ok()) + if (clr.IsOk()) Set((unsigned char)clr.Red(), (unsigned char)clr.Green(), (unsigned char)clr.Blue()); } - if (Ok()) + if (IsOk()) return true; wxLogDebug(wxT("wxColour::Set - couldn't set to colour string '%s'"), str); @@ -128,9 +219,9 @@ wxString wxColourBase::GetAsString(long flags) const } else // use rgba() form { - // TODO: use locale-independent function - colName.Printf(wxT("rgba(%d, %d, %d, %.3f)"), - red, green, blue, Alpha() / 255.); + colName.Printf(wxT("rgba(%d, %d, %d, %s)"), + red, green, blue, + wxString::FromCDouble(Alpha() / 255., 3)); } } else if ( flags & wxC2S_HTML_SYNTAX ) @@ -149,6 +240,97 @@ wxString wxColourBase::GetAsString(long flags) const return colName; } +// static +void wxColourBase::MakeMono(unsigned char* r, unsigned char* g, unsigned char* b, + bool on) +{ + *r = *g = *b = on ? 255 : 0; +} + +// static +void wxColourBase::MakeGrey(unsigned char* r, unsigned char* g, unsigned char* b + /*, unsigned char brightness */ + ) +{ + *r = *g = *b = (wxByte)(((*b)*117UL + (*g)*601UL + (*r)*306UL) >> 10); +} + +// static +void wxColourBase::MakeGrey(unsigned char* r, unsigned char* g, unsigned char* b, + double weight_r, double weight_g, double weight_b) +{ + double luma = (*r) * weight_r + (*g) * weight_g + (*b) * weight_b; + *r = *g = *b = (wxByte)wxRound(luma); +} + +// static +void wxColourBase::MakeDisabled(unsigned char* r, unsigned char* g, unsigned char* b, + unsigned char brightness) +{ + //MakeGrey(r, g, b, brightness); // grey no-blend version + *r = AlphaBlend(*r, brightness, 0.4); + *g = AlphaBlend(*g, brightness, 0.4); + *b = AlphaBlend(*b, brightness, 0.4); +} + +// AlphaBlend is used by ChangeLightness and MakeDisabled + +// static +unsigned char wxColourBase::AlphaBlend(unsigned char fg, unsigned char bg, + double alpha) +{ + double result = bg + (alpha * (fg - bg)); + result = wxMax(result, 0.0); + result = wxMin(result, 255.0); + return (unsigned char)result; +} + +// ChangeLightness() is a utility function that simply darkens +// or lightens a color, based on the specified percentage +// ialpha of 0 would be completely black, 100 completely white +// an ialpha of 100 returns the same colour + +// static +void wxColourBase::ChangeLightness(unsigned char* r, unsigned char* g, unsigned char* b, + int ialpha) +{ + if (ialpha == 100) return; + + // ialpha is 0..200 where 0 is completely black + // and 200 is completely white and 100 is the same + // convert that to normal alpha 0.0 - 1.0 + ialpha = wxMax(ialpha, 0); + ialpha = wxMin(ialpha, 200); + double alpha = ((double)(ialpha - 100.0))/100.0; + + unsigned char bg; + if (ialpha > 100) + { + // blend with white + bg = 255; + alpha = 1.0 - alpha; // 0 = transparent fg; 1 = opaque fg + } + else + { + // blend with black + bg = 0; + alpha = 1.0 + alpha; // 0 = transparent fg; 1 = opaque fg + } + + *r = AlphaBlend(*r, bg, alpha); + *g = AlphaBlend(*g, bg, alpha); + *b = AlphaBlend(*b, bg, alpha); +} + +wxColour wxColourBase::ChangeLightness(int ialpha) const +{ + wxByte r = Red(); + wxByte g = Green(); + wxByte b = Blue(); + ChangeLightness(&r, &g, &b, ialpha); + return wxColour(r,g,b); +} + #if WXWIN_COMPATIBILITY_2_6 // static