wxWidgets/include/wx/fontutil.h
Vadim Zeitlin 409d5a5860 better native font support for wxGTK
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13642 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2002-01-18 20:01:49 +00:00

198 lines
6.7 KiB
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/////////////////////////////////////////////////////////////////////////////
// Name: wx/fontutil.h
// Purpose: font-related helper functions
// Author: Vadim Zeitlin
// Modified by:
// Created: 05.11.99
// RCS-ID: $Id$
// Copyright: (c) wxWindows team
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// General note: this header is private to wxWindows and is not supposed to be
// included by user code. The functions declared here are implemented in
// msw/fontutil.cpp for Windows, unix/fontutil.cpp for GTK/Motif &c.
#ifndef _WX_FONTUTIL_H_
#define _WX_FONTUTIL_H_
#ifdef __GNUG__
#pragma interface "fontutil.h"
#endif
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "wx/font.h" // for wxFont and wxFontEncoding
#if defined(__WXMSW__)
#include <windows.h>
#include "wx/msw/winundef.h"
#endif
#if defined(_WX_X_FONTLIKE)
// the symbolic names for the XLFD fields (with examples for their value)
//
// NB: we suppose that the font always starts with the empty token (font name
// registry field) as we never use nor generate it anyhow
enum wxXLFDField
{
wxXLFD_FOUNDRY, // adobe
wxXLFD_FAMILY, // courier, times, ...
wxXLFD_WEIGHT, // black, bold, demibold, medium, regular, light
wxXLFD_SLANT, // r/i/o (roman/italique/oblique)
wxXLFD_SETWIDTH, // condensed, expanded, ...
wxXLFD_ADDSTYLE, // whatever - usually nothing
wxXLFD_PIXELSIZE, // size in pixels
wxXLFD_POINTSIZE, // size in points
wxXLFD_RESX, // 72, 75, 100, ...
wxXLFD_RESY,
wxXLFD_SPACING, // m/p/c (monospaced/proportional/character cell)
wxXLFD_AVGWIDTH, // average width in 1/10 pixels
wxXLFD_REGISTRY, // iso8859, rawin, koi8, ...
wxXLFD_ENCODING, // 1, r, r, ...
wxXLFD_MAX
};
#endif // _WX_X_FONTLIKE
// ----------------------------------------------------------------------------
// types
// ----------------------------------------------------------------------------
// wxNativeFontInfo is platform-specific font representation: this struct
// should be considered as opaque font description only used by the native
// functions, the user code can only get the objects of this type from
// somewhere and pass it somewhere else (possibly save them somewhere using
// ToString() and restore them using FromString())
//
// NB: it is a POD currently for max efficiency but if it continues to grow
// further it might make sense to make it a real class with virtual methods
struct WXDLLEXPORT wxNativeFontInfo
{
#if defined(_WX_X_FONTLIKE)
// the members can't be accessed directly as we only parse the
// xFontName on demand
private:
// the components of the XLFD
wxString fontElements[wxXLFD_MAX];
// the full XLFD
wxString xFontName;
// true until SetXFontName() is called
bool m_isDefault;
// return true if we have already initialized fontElements
inline bool HasElements() const;
public:
// init the elements from an XLFD, return TRUE if ok
bool FromXFontName(const wxString& xFontName);
// return false if we were never initialized with a valid XLFD
bool IsDefault() const { return m_isDefault; }
// return the XLFD (using the fontElements if necessary)
wxString GetXFontName() const;
// get the given XFLD component
wxString GetXFontComponent(wxXLFDField field) const;
// change the font component
void SetXFontComponent(wxXLFDField field, const wxString& value);
// set the XFLD
void SetXFontName(const wxString& xFontName);
#elif defined(__WXMSW__)
LOGFONT lf;
#elif defined(__WXPM__)
// OS/2 native structures that define a font
FATTRS fa;
FONTMETRICS fm;
FACENAMEDESC fn;
#else // other platforms
//
// This is a generic implementation that should work on all ports
// without specific support by the port.
//
#define wxNO_NATIVE_FONTINFO
int pointSize;
wxFontFamily family;
wxFontStyle style;
wxFontWeight weight;
bool underlined;
wxString faceName;
wxFontEncoding encoding;
#endif // platforms
// default ctor (default copy ctor is ok)
wxNativeFontInfo() { Init(); }
// reset to the default state
void Init();
// accessors and modifiers for the font elements
int GetPointSize() const;
wxFontStyle GetStyle() const;
wxFontWeight GetWeight() const;
bool GetUnderlined() const;
wxString GetFaceName() const;
wxFontFamily GetFamily() const;
wxFontEncoding GetEncoding() const;
void SetPointSize(int pointsize);
void SetStyle(wxFontStyle style);
void SetWeight(wxFontWeight weight);
void SetUnderlined(bool underlined);
void SetFaceName(wxString facename);
void SetFamily(wxFontFamily family);
void SetEncoding(wxFontEncoding encoding);
// it is important to be able to serialize wxNativeFontInfo objects to be
// able to store them (in config file, for example)
bool FromString(const wxString& s);
wxString ToString() const;
// we also want to present the native font descriptions to the user in some
// human-readable form (it is not platform independent neither, but can
// hopefully be understood by the user)
bool FromUserString(const wxString& s);
wxString ToUserString() const;
};
// ----------------------------------------------------------------------------
// font-related functions (common)
// ----------------------------------------------------------------------------
// translate a wxFontEncoding into native encoding parameter (defined above),
// returning TRUE if an (exact) macth could be found, FALSE otherwise (without
// attempting any substitutions)
extern bool wxGetNativeFontEncoding(wxFontEncoding encoding,
wxNativeEncodingInfo *info);
// test for the existence of the font described by this facename/encoding,
// return TRUE if such font(s) exist, FALSE otherwise
extern bool wxTestFontEncoding(const wxNativeEncodingInfo& info);
// ----------------------------------------------------------------------------
// font-related functions (X and GTK)
// ----------------------------------------------------------------------------
#ifdef _WX_X_FONTLIKE
#include "wx/unix/fontutil.h"
#endif // X || GDK
// ----------------------------------------------------------------------------
// font-related functions (MGL)
// ----------------------------------------------------------------------------
#ifdef __WXMGL__
#include "wx/mgl/fontutil.h"
#endif // __WXMGL__
#endif // _WX_FONTUTIL_H_