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///////////////////////////////////////////////////////////////////////////////
// Name: wx/gtk/private/textmeasure.h
// Purpose: wxGTK-specific declaration of wxTextMeasure class
// Author: Manuel Martin
// Created: 2012-10-05
// Copyright: (c) 1997-2012 wxWidgets team
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_GTK_PRIVATE_TEXTMEASURE_H_
#define _WX_GTK_PRIVATE_TEXTMEASURE_H_
// ----------------------------------------------------------------------------
// wxTextMeasure
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_FWD_CORE wxWindowDCImpl;
class wxTextMeasure : public wxTextMeasureBase
{
public:
wxEXPLICIT wxTextMeasure(const wxDC *dc, const wxFont *font = NULL)
: wxTextMeasureBase(dc, font)
{
Init();
}
wxEXPLICIT wxTextMeasure(const wxWindow *win, const wxFont *font = NULL)
: wxTextMeasureBase(win, font)
{
Init();
}
protected:
// Common part of both ctors.
void Init();
virtual void BeginMeasuring();
virtual void EndMeasuring();
virtual void DoGetTextExtent(const wxString& string,
wxCoord *width,
wxCoord *height,
wxCoord *descent = NULL,
wxCoord *externalLeading = NULL);
virtual bool DoGetPartialTextExtents(const wxString& text,
wxArrayInt& widths,
double scaleX);
// This class is only used for DC text measuring with GTK+ 2 as GTK+ 3 uses
// Cairo and not Pango for this. However it's still used even with GTK+ 3
// for window text measuring, so the context and the layout are still
// needed.
#ifndef __WXGTK3__
wxWindowDCImpl *m_wdc;
#endif // GTK+ < 3
PangoContext *m_context;
PangoLayout *m_layout;
wxDECLARE_NO_COPY_CLASS(wxTextMeasure);
};
#endif // _WX_GTK_PRIVATE_TEXTMEASURE_H_
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