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