8cd79b7af0
Add a new private wxTextMeasure class implementing methods for measuring text and move the often duplicated (but not always identically) code for doing the same from wxDC and wxWindow into it. Currently this class is only really implemented in wxMSW and wxGTK. Also extend the test for text measuring functions and rename it to MeasuringTextTestCase from MeasuringContextTestCase as it's not wxGC-specific any more. Closes #14705. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72699 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
66 lines
2.0 KiB
C++
66 lines
2.0 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: 2012-19-05
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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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wxTextMeasure(const wxDC *dc, const wxFont *font)
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: wxTextMeasureBase(dc, font)
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{
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Init();
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}
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wxTextMeasure(const wxWindow *win, const wxFont *font)
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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();
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virtual void EndMeasuring();
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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);
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virtual bool DoGetPartialTextExtents(const wxString& text,
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wxArrayInt& widths,
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double scaleX);
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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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