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william |
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///////////////////////////////////////////////////////////////////////////// |
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// Name: src/common/colourcmn.cpp |
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// Purpose: wxColourBase implementation |
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// Author: Francesco Montorsi |
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// Modified by: |
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// Created: 20/4/2006 |
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// RCS-ID: $Id: colourcmn.cpp 41538 2006-09-30 20:45:15Z RR $ |
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// Copyright: (c) Francesco Montorsi |
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// Licence: wxWindows licence |
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///////////////////////////////////////////////////////////////////////////// |
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// For compilers that support precompilation, includes "wx.h". |
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#include "wx/wxprec.h" |
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#ifdef __BORLANDC__ |
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#pragma hdrstop |
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#endif |
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#include "wx/colour.h" |
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#ifndef WX_PRECOMP |
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#include "wx/log.h" |
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#include "wx/utils.h" |
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#include "wx/gdicmn.h" |
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#endif |
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#if wxUSE_VARIANT |
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IMPLEMENT_VARIANT_OBJECT_EXPORTED(wxColour,WXDLLEXPORT) |
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#endif |
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// ============================================================================ |
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// wxString <-> wxColour conversions |
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// ============================================================================ |
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bool wxColourBase::FromString(const wxChar *str) |
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{ |
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if ( str == NULL || str[0] == wxT('\0')) |
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return false; // invalid or empty string |
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if ( wxStrncmp(str, wxT("RGB"), 3) == 0 || |
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wxStrncmp(str, wxT("rgb"), 3) == 0 ) |
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{ |
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// CSS-like RGB specification |
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// according to http://www.w3.org/TR/REC-CSS2/syndata.html#color-units |
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// values outside 0-255 range are allowed but should be clipped |
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int red, green, blue; |
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if (wxSscanf(&str[3], wxT("(%d, %d, %d)"), &red, &green, &blue) != 3) |
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return false; |
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Set((unsigned char)wxClip(red,0,255), |
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(unsigned char)wxClip(green,0,255), |
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(unsigned char)wxClip(blue,0,255)); |
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} |
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else if ( str[0] == wxT('#') && wxStrlen(str) == 7 ) |
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{ |
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// hexadecimal prefixed with # (HTML syntax) |
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unsigned long tmp; |
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if (wxSscanf(&str[1], wxT("%lx"), &tmp) != 1) |
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return false; |
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Set((unsigned char)(tmp >> 16), |
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(unsigned char)(tmp >> 8), |
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(unsigned char)tmp); |
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} |
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else if (wxTheColourDatabase) // a colour name ? |
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{ |
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// we can't do |
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// *this = wxTheColourDatabase->Find(str) |
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// because this place can be called from constructor |
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// and 'this' could not be available yet |
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wxColour clr = wxTheColourDatabase->Find(str); |
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if (clr.Ok()) |
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Set((unsigned char)clr.Red(), |
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(unsigned char)clr.Green(), |
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(unsigned char)clr.Blue()); |
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} |
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if (Ok()) |
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return true; |
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wxLogDebug(wxT("wxColour::Set - couldn't set to colour string '%s'"), str); |
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return false; |
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} |
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wxString wxColourBase::GetAsString(long flags) const |
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{ |
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wxString colName; |
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if (flags & wxC2S_NAME) |
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colName = wxTheColourDatabase->FindName((const wxColour &)(*this)).MakeLower(); |
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if ( colName.empty() && (flags & wxC2S_CSS_SYNTAX) ) |
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{ |
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// no name for this colour; return it in CSS syntax |
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colName.Printf(wxT("rgb(%d, %d, %d)"), |
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Red(), Green(), Blue()); |
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} |
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else if ( colName.empty() && (flags & wxC2S_HTML_SYNTAX) ) |
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{ |
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// no name for this colour; return it in HTML syntax |
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colName.Printf(wxT("#%02X%02X%02X"), |
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Red(), Green(), Blue()); |
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} |
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// this function always returns a non-empty string |
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wxASSERT_MSG(!colName.empty(), |
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wxT("Invalid wxColour -> wxString conversion flags")); |
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return colName; |
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} |
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#if WXWIN_COMPATIBILITY_2_6 |
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// static |
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wxColour wxColourBase::CreateByName(const wxString& name) |
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{ |
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return wxColour(name); |
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} |
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void wxColourBase::InitFromName(const wxString& col) |
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{ |
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Set(col); |
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} |
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#endif // WXWIN_COMPATIBILITY_2_6 |
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