b0a173a460
* Switch to using PostScriptNames internally, keeping font family name on public API * solving roundTrip Problem of wxNativeFontInfo only
361 lines
12 KiB
C++
361 lines
12 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/fontutil.h
|
|
// Purpose: font-related helper functions
|
|
// Author: Vadim Zeitlin
|
|
// Modified by:
|
|
// Created: 05.11.99
|
|
// Copyright: (c) wxWidgets team
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
// General note: this header is private to wxWidgets 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_
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// headers
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#include "wx/font.h" // for wxFont and wxFontEncoding
|
|
|
|
#if defined(__WXMSW__)
|
|
#include "wx/msw/wrapwin.h"
|
|
#endif
|
|
|
|
#if defined(__WXQT__)
|
|
#include <QtGui/QFont>
|
|
#endif
|
|
|
|
#if defined(__WXOSX__)
|
|
#include "wx/osx/core/cfref.h"
|
|
#endif
|
|
|
|
class WXDLLIMPEXP_FWD_BASE wxArrayString;
|
|
struct WXDLLIMPEXP_FWD_CORE wxNativeEncodingInfo;
|
|
|
|
#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())
|
|
|
|
class WXDLLIMPEXP_CORE wxNativeFontInfo
|
|
{
|
|
public:
|
|
#if wxUSE_PANGO
|
|
PangoFontDescription *description;
|
|
|
|
// Pango font description doesn't have these attributes, so we store them
|
|
// separately and handle them ourselves in {To,From}String() methods.
|
|
bool m_underlined;
|
|
bool m_strikethrough;
|
|
#elif 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__)
|
|
wxNativeFontInfo(const LOGFONT& lf_)
|
|
: lf(lf_),
|
|
pointSize(GetPointSizeFromLogFontHeight(lf.lfHeight))
|
|
{
|
|
}
|
|
|
|
// MSW-specific: get point size from LOGFONT height using the default DPI.
|
|
static float GetPointSizeFromLogFontHeight(int height);
|
|
|
|
// MSW-specific: get the height value in pixels using LOGFONT convention
|
|
// (i.e. negative) corresponding to the given size in points and DPI.
|
|
static int GetLogFontHeightAtPPI(float size, int ppi)
|
|
{
|
|
return -wxRound(size * ppi / 72.0);
|
|
}
|
|
|
|
// And the same thing for the size of this font.
|
|
int GetLogFontHeightAtPPI(int ppi) const
|
|
{
|
|
return GetLogFontHeightAtPPI(pointSize, ppi);
|
|
}
|
|
|
|
LOGFONT lf;
|
|
|
|
// MSW only has limited support for fractional point sizes and we need to
|
|
// store the fractional point size separately if it was initially specified
|
|
// as we can't losslessly recover it from LOGFONT later.
|
|
float pointSize;
|
|
#elif defined(__WXOSX__)
|
|
public:
|
|
wxNativeFontInfo(const wxNativeFontInfo& info) { Init(info); }
|
|
|
|
~wxNativeFontInfo() { Free(); }
|
|
|
|
wxNativeFontInfo& operator=(const wxNativeFontInfo& info)
|
|
{
|
|
if (this != &info)
|
|
{
|
|
Free();
|
|
Init(info);
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
void InitFromFont(CTFontRef font);
|
|
void InitFromFontDescriptor(CTFontDescriptorRef font);
|
|
void Init(const wxNativeFontInfo& info);
|
|
|
|
void Free();
|
|
|
|
// not all style attributes like condensed etc, are exposed in the public API methods
|
|
// for best fidelity PostScript names are useful, they are also used in the toString/fromString methods
|
|
wxString GetPostScriptName() const;
|
|
bool SetPostScriptName(const wxString& postScriptName);
|
|
|
|
static CGFloat GetCTWeight( CTFontRef font );
|
|
static CGFloat GetCTWeight( CTFontDescriptorRef font );
|
|
static CGFloat GetCTSlant( CTFontDescriptorRef font );
|
|
|
|
CTFontDescriptorRef GetCTFontDescriptor() const;
|
|
|
|
void RealizeResource() const;
|
|
private:
|
|
// attributes for regenerating a CTFontDescriptor, stay close to native values
|
|
// for better roundtrip fidelity
|
|
CGFloat m_ctWeight;
|
|
wxFontStyle m_style;
|
|
CGFloat m_ctSize;
|
|
wxFontFamily m_family;
|
|
|
|
wxString m_familyName;
|
|
wxString m_postScriptName;
|
|
|
|
// native font description
|
|
wxCFRef<CTFontDescriptorRef> m_descriptor;
|
|
void CreateCTFontDescriptor();
|
|
|
|
// these attributes are not part of a CTFont
|
|
bool m_underlined;
|
|
bool m_strikethrough;
|
|
wxFontEncoding m_encoding;
|
|
|
|
public :
|
|
#elif defined(__WXQT__)
|
|
QFont m_qtFont;
|
|
#else // other platforms
|
|
//
|
|
// This is a generic implementation that should work on all ports
|
|
// without specific support by the port.
|
|
//
|
|
#define wxNO_NATIVE_FONTINFO
|
|
|
|
float pointSize;
|
|
wxFontFamily family;
|
|
wxFontStyle style;
|
|
int weight;
|
|
bool underlined;
|
|
bool strikethrough;
|
|
wxString faceName;
|
|
wxFontEncoding encoding;
|
|
#endif // platforms
|
|
|
|
// default ctor (default copy ctor is ok)
|
|
wxNativeFontInfo() { Init(); }
|
|
|
|
#if wxUSE_PANGO
|
|
private:
|
|
void Init(const wxNativeFontInfo& info);
|
|
void Free();
|
|
|
|
public:
|
|
wxNativeFontInfo(const wxNativeFontInfo& info) { Init(info); }
|
|
~wxNativeFontInfo() { Free(); }
|
|
|
|
wxNativeFontInfo& operator=(const wxNativeFontInfo& info)
|
|
{
|
|
if (this != &info)
|
|
{
|
|
Free();
|
|
Init(info);
|
|
}
|
|
return *this;
|
|
}
|
|
#endif // wxUSE_PANGO
|
|
|
|
// reset to the default state
|
|
void Init();
|
|
|
|
// init with the parameters of the given font
|
|
void InitFromFont(const wxFont& font)
|
|
{
|
|
#if wxUSE_PANGO || defined(__WXOSX__)
|
|
Init(*font.GetNativeFontInfo());
|
|
#else
|
|
// translate all font parameters
|
|
SetStyle((wxFontStyle)font.GetStyle());
|
|
SetNumericWeight(font.GetNumericWeight());
|
|
SetUnderlined(font.GetUnderlined());
|
|
SetStrikethrough(font.GetStrikethrough());
|
|
#if defined(__WXMSW__)
|
|
if ( font.IsUsingSizeInPixels() )
|
|
SetPixelSize(font.GetPixelSize());
|
|
else
|
|
SetFractionalPointSize(font.GetFractionalPointSize());
|
|
#else
|
|
SetFractionalPointSize(font.GetFractionalPointSize());
|
|
#endif
|
|
|
|
// set the family/facename
|
|
SetFamily((wxFontFamily)font.GetFamily());
|
|
const wxString& facename = font.GetFaceName();
|
|
if ( !facename.empty() )
|
|
{
|
|
SetFaceName(facename);
|
|
}
|
|
|
|
// deal with encoding now (it may override the font family and facename
|
|
// so do it after setting them)
|
|
SetEncoding(font.GetEncoding());
|
|
#endif // !wxUSE_PANGO
|
|
}
|
|
|
|
// accessors and modifiers for the font elements
|
|
int GetPointSize() const;
|
|
float GetFractionalPointSize() const;
|
|
wxSize GetPixelSize() const;
|
|
wxFontStyle GetStyle() const;
|
|
wxFontWeight GetWeight() const;
|
|
int GetNumericWeight() const;
|
|
bool GetUnderlined() const;
|
|
bool GetStrikethrough() const;
|
|
wxString GetFaceName() const;
|
|
wxFontFamily GetFamily() const;
|
|
wxFontEncoding GetEncoding() const;
|
|
|
|
void SetPointSize(int pointsize);
|
|
void SetFractionalPointSize(float pointsize);
|
|
void SetPixelSize(const wxSize& pixelSize);
|
|
void SetStyle(wxFontStyle style);
|
|
void SetNumericWeight(int weight);
|
|
void SetWeight(wxFontWeight weight);
|
|
void SetUnderlined(bool underlined);
|
|
void SetStrikethrough(bool strikethrough);
|
|
bool SetFaceName(const wxString& facename);
|
|
void SetFamily(wxFontFamily family);
|
|
void SetEncoding(wxFontEncoding encoding);
|
|
|
|
// Helper used in many ports: use the normal font size if the input is
|
|
// negative, as we handle -1 as meaning this for compatibility.
|
|
void SetSizeOrDefault(float size)
|
|
{
|
|
SetFractionalPointSize
|
|
(
|
|
size < 0 ? wxNORMAL_FONT->GetFractionalPointSize()
|
|
: size
|
|
);
|
|
}
|
|
|
|
// sets the first facename in the given array which is found
|
|
// to be valid. If no valid facename is given, sets the
|
|
// first valid facename returned by wxFontEnumerator::GetFacenames().
|
|
// Does not return a bool since it cannot fail.
|
|
void SetFaceName(const wxArrayString &facenames);
|
|
|
|
|
|
// 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)
|
|
WXDLLIMPEXP_CORE 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
|
|
WXDLLIMPEXP_CORE bool wxTestFontEncoding(const wxNativeEncodingInfo& info);
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// font-related functions (X and GTK)
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#ifdef _WX_X_FONTLIKE
|
|
#include "wx/unix/fontutil.h"
|
|
#endif // X || GDK
|
|
|
|
#endif // _WX_FONTUTIL_H_
|