+///////////////////////////////////////////////////////////////////////////////
+// Name: wx/osx/cocoa/private/markuptoattr.h
+// Purpose: Class to convert markup to Cocoa attributed strings.
+// Author: Vadim Zeitlin
+// Created: 2011-02-22
+// RCS-ID: $Id: wxhead.h,v 1.12 2010-04-22 12:44:51 zeitlin Exp $
+// Copyright: (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence: wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_OSX_COCOA_PRIVATE_MARKUPTOATTR_H_
+#define _WX_OSX_COCOA_PRIVATE_MARKUPTOATTR_H_
+
+#include "wx/private/markupparserattr.h"
+
+// ----------------------------------------------------------------------------
+// wxMarkupToAttrString: create NSAttributedString from markup.
+// ----------------------------------------------------------------------------
+
+class wxMarkupToAttrString : public wxMarkupParserAttrOutput
+{
+public:
+ // We don't care about the original colours because we never use them but
+ // we do need the correct initial font as we apply modifiers (e.g. create a
+ // font larger than it) to it and so it must be valid.
+ wxMarkupToAttrString(wxWindow *win, const wxString& markup)
+ : wxMarkupParserAttrOutput(win->GetFont(), wxColour(), wxColour())
+ {
+ const wxCFStringRef
+ label(wxControl::RemoveMnemonics(wxMarkupParser::Strip(markup)));
+ m_attrString = [[NSMutableAttributedString alloc]
+ initWithString: label.AsNSString()];
+
+ m_pos = 0;
+
+ [m_attrString beginEditing];
+
+ // First thing we do is change the default string font: as mentioned in
+ // Apple documentation, attributed strings use "Helvetica 12" font by
+ // default which is different from the system "Lucida Grande" font. So
+ // we need to explicitly change the font for the entire string.
+ [m_attrString addAttribute:NSFontAttributeName
+ value:win->GetFont().OSXGetNSFont()
+ range:NSMakeRange(0, [m_attrString length])];
+
+ // Now translate the markup tags to corresponding attributes.
+ wxMarkupParser parser(*this);
+ parser.Parse(markup);
+
+ [m_attrString endEditing];
+ }
+
+ ~wxMarkupToAttrString()
+ {
+ [m_attrString release];
+ }
+
+ // Accessor for the users of this class.
+ //
+ // We keep ownership of the returned string.
+ NSMutableAttributedString *GetNSAttributedString() const
+ {
+ return m_attrString;
+ }
+
+
+ // Implement base class pure virtual methods to process markup tags.
+ virtual void OnText(const wxString& text)
+ {
+ m_pos += wxControl::RemoveMnemonics(text).length();
+ }
+
+ virtual void OnAttrStart(const Attr& WXUNUSED(attr))
+ {
+ // Just remember the starting position of the range, we can't really
+ // set the attribute until we find the end of it.
+ m_rangeStarts.push(m_pos);
+ }
+
+ virtual void OnAttrEnd(const Attr& attr)
+ {
+ unsigned start = m_rangeStarts.top();
+ m_rangeStarts.pop();
+
+ const NSRange range = NSMakeRange(start, m_pos - start);
+
+ [m_attrString addAttribute:NSFontAttributeName
+ value:attr.font.OSXGetNSFont()
+ range:range];
+
+ if ( attr.foreground.IsOk() )
+ {
+ [m_attrString addAttribute:NSForegroundColorAttributeName
+ value:attr.foreground.OSXGetNSColor()
+ range:range];
+ }
+
+ if ( attr.background.IsOk() )
+ {
+ [m_attrString addAttribute:NSBackgroundColorAttributeName
+ value:attr.background.OSXGetNSColor()
+ range:range];
+ }
+ }
+
+private:
+ // The attributed string we're building.
+ NSMutableAttributedString *m_attrString;
+
+ // The current position in the output string.
+ unsigned m_pos;
+
+ // The positions of starting ranges.
+ wxStack<unsigned> m_rangeStarts;
+
+
+ wxDECLARE_NO_COPY_CLASS(wxMarkupToAttrString);
+};
+
+#endif // _WX_OSX_COCOA_PRIVATE_MARKUPTOATTR_H_
projects / wxWidgets.git / commitdiff
