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b12401e0d5538ca037e5f4ead09e545f5f7dede2
wxWidgets/src/unix/fontutil.cpp
Mattia Barbon b12401e0d5 Fix indentation. 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35024 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2005-07-30 17:22:50 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: unix/fontutil.cpp
// Purpose: Font helper functions for X11 (GDK/X)
// Author: Vadim Zeitlin
// Modified by:
// Created: 05.11.99
// RCS-ID: $Id$
// Copyright: (c) Vadim Zeitlin
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "fontutil.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/font.h" // wxFont enums
#include "wx/encinfo.h"
#endif // PCH
#include "wx/fontutil.h"
#include "wx/fontmap.h"
#include "wx/tokenzr.h"
#include "wx/hash.h"
#include "wx/module.h"
#if wxUSE_PANGO
#include "pango/pango.h"
#ifdef __WXGTK20__
#include "wx/gtk/private.h"
#else
#include "wx/x11/private.h"
#endif
// ----------------------------------------------------------------------------
// wxNativeFontInfo
// ----------------------------------------------------------------------------
void wxNativeFontInfo::Init()
{
description = NULL;
}
void
wxNativeFontInfo::Init(const wxNativeFontInfo& info)
{
if (info.description)
description = pango_font_description_copy(info.description);
else
description = NULL;
}
void wxNativeFontInfo::Free()
{
if (description)
pango_font_description_free(description);
}
int wxNativeFontInfo::GetPointSize() const
{
return pango_font_description_get_size( description ) / PANGO_SCALE;
}
wxFontStyle wxNativeFontInfo::GetStyle() const
{
wxFontStyle m_style = wxFONTSTYLE_NORMAL;
switch (pango_font_description_get_style( description ))
{
case PANGO_STYLE_NORMAL:
m_style = wxFONTSTYLE_NORMAL;
break;
case PANGO_STYLE_ITALIC:
m_style = wxFONTSTYLE_ITALIC;
break;
case PANGO_STYLE_OBLIQUE:
m_style = wxFONTSTYLE_SLANT;
break;
}
return m_style;
}
wxFontWeight wxNativeFontInfo::GetWeight() const
{
#if 0
// We seem to currently initialize only by string.
// In that case PANGO_FONT_MASK_WEIGHT is always set.
if (!(pango_font_description_get_set_fields(description) & PANGO_FONT_MASK_WEIGHT))
return wxFONTWEIGHT_NORMAL;
#endif
PangoWeight pango_weight = pango_font_description_get_weight( description );
// Until the API can be changed the following ranges of weight values are used:
// wxFONTWEIGHT_LIGHT: 100 .. 349 - range of 250
// wxFONTWEIGHT_NORMAL: 350 .. 599 - range of 250
// wxFONTWEIGHT_BOLD: 600 .. 900 - range of 301 (600 is "semibold" already)
if (pango_weight >= 600)
return wxFONTWEIGHT_BOLD;
if (pango_weight < 350)
return wxFONTWEIGHT_LIGHT;
return wxFONTWEIGHT_NORMAL;
}
bool wxNativeFontInfo::GetUnderlined() const
{
return FALSE;
}
wxString wxNativeFontInfo::GetFaceName() const
{
wxString tmp = wxGTK_CONV_BACK( pango_font_description_get_family( description ) );
return tmp;
}
wxFontFamily wxNativeFontInfo::GetFamily() const
{
return wxFONTFAMILY_SWISS;
}
wxFontEncoding wxNativeFontInfo::GetEncoding() const
{
return wxFONTENCODING_SYSTEM;
}
void wxNativeFontInfo::SetPointSize(int WXUNUSED(pointsize))
{
wxFAIL_MSG( _T("not implemented") );
}
void wxNativeFontInfo::SetStyle(wxFontStyle WXUNUSED(style))
{
wxFAIL_MSG( _T("not implemented") );
}
void wxNativeFontInfo::SetWeight(wxFontWeight WXUNUSED(weight))
{
wxFAIL_MSG( _T("not implemented") );
}
void wxNativeFontInfo::SetUnderlined(bool WXUNUSED(underlined))
{
wxFAIL_MSG( _T("not implemented") );
}
void wxNativeFontInfo::SetFaceName(wxString WXUNUSED(facename))
{
wxFAIL_MSG( _T("not implemented") );
}
void wxNativeFontInfo::SetFamily(wxFontFamily WXUNUSED(family))
{
wxFAIL_MSG( _T("not implemented") );
}
void wxNativeFontInfo::SetEncoding(wxFontEncoding WXUNUSED(encoding))
{
wxFAIL_MSG( _T("not implemented") );
}
bool wxNativeFontInfo::FromString(const wxString& s)
{
if (description)
pango_font_description_free( description );
description = pango_font_description_from_string( wxGTK_CONV( s ) );
return TRUE;
}
wxString wxNativeFontInfo::ToString() const
{
char *str = pango_font_description_to_string( description );
wxString tmp = wxGTK_CONV_BACK( str );
g_free( str );
return tmp;
}
bool wxNativeFontInfo::FromUserString(const wxString& s)
{
return FromString( s );
}
wxString wxNativeFontInfo::ToUserString() const
{
return ToString();
}
// ----------------------------------------------------------------------------
// wxNativeEncodingInfo
// ----------------------------------------------------------------------------
bool wxNativeEncodingInfo::FromString(const wxString& s)
{
return FALSE;
}
wxString wxNativeEncodingInfo::ToString() const
{
return wxEmptyString;
}
bool wxTestFontEncoding(const wxNativeEncodingInfo& info)
{
return TRUE;
}
bool wxGetNativeFontEncoding(wxFontEncoding encoding,
wxNativeEncodingInfo *info)
{
// we *must* return true for default encoding as otherwise wxFontMapper
// considers that we can't load any font and aborts with wxLogFatalError!
if ( encoding == wxFONTENCODING_SYSTEM )
{
info->facename.clear();
info->encoding = wxFONTENCODING_SYSTEM;
}
// pretend that we support everything, it's better than to always return
// false as the old code did
return true;
}
#else // GTK+ 1.x
#ifdef __X__
#ifdef __VMS__
#pragma message disable nosimpint
#endif
#include <X11/Xlib.h>
#ifdef __VMS__
#pragma message enable nosimpint
#endif
#include "wx/utils.h" // for wxGetDisplay()
#elif defined(__WXGTK__)
// we have to declare struct tm to avoid problems with first forward
// declaring it in C code (glib.h included from gdk.h does it) and then
// defining it when time.h is included from the headers below - this is
// known not to work at least with Sun CC 6.01
#include <time.h>
#include <gdk/gdk.h>
#endif
// ----------------------------------------------------------------------------
// private data
// ----------------------------------------------------------------------------
static wxHashTable *g_fontHash = (wxHashTable*) NULL;
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
// define the functions to create and destroy native fonts for this toolkit
#ifdef __X__
wxNativeFont wxLoadFont(const wxString& fontSpec)
{
return XLoadQueryFont((Display *)wxGetDisplay(), fontSpec);
}
inline void wxFreeFont(wxNativeFont font)
{
XFreeFont((Display *)wxGetDisplay(), (XFontStruct *)font);
}
#elif defined(__WXGTK__)
wxNativeFont wxLoadFont(const wxString& fontSpec)
{
// VZ: we should use gdk_fontset_load() instead of gdk_font_load()
// here to be able to display Japanese fonts correctly (at least
// this is what people report) but unfortunately doing it results
// in tons of warnings when using GTK with "normal" European
// languages and so we can't always do it and I don't know enough
// to determine when should this be done... (FIXME)
return gdk_font_load( wxConvertWX2MB(fontSpec) );
}
inline void wxFreeFont(wxNativeFont font)
{
gdk_font_unref(font);
}
#else
#error "Unknown GUI toolkit"
#endif
static bool wxTestFontSpec(const wxString& fontspec);
static wxNativeFont wxLoadQueryFont(int pointSize,
int family,
int style,
int weight,
bool underlined,
const wxString& facename,
const wxString& xregistry,
const wxString& xencoding,
wxString* xFontName);
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// wxNativeEncodingInfo
// ----------------------------------------------------------------------------
// convert to/from the string representation: format is
// encodingid;registry;encoding[;facename]
bool wxNativeEncodingInfo::FromString(const wxString& s)
{
// use ";", not "-" because it may be part of encoding name
wxStringTokenizer tokenizer(s, _T(";"));
wxString encid = tokenizer.GetNextToken();
long enc;
if ( !encid.ToLong(&enc) )
return FALSE;
encoding = (wxFontEncoding)enc;
xregistry = tokenizer.GetNextToken();
if ( !xregistry )
return FALSE;
xencoding = tokenizer.GetNextToken();
if ( !xencoding )
return FALSE;
// ok even if empty
facename = tokenizer.GetNextToken();
return TRUE;
}
wxString wxNativeEncodingInfo::ToString() const
{
wxString s;
s << (long)encoding << _T(';') << xregistry << _T(';') << xencoding;
if ( !!facename )
{
s << _T(';') << facename;
}
return s;
}
// ----------------------------------------------------------------------------
// wxNativeFontInfo
// ----------------------------------------------------------------------------
void wxNativeFontInfo::Init()
{
m_isDefault = TRUE;
}
bool wxNativeFontInfo::FromString(const wxString& s)
{
wxStringTokenizer tokenizer(s, _T(";"));
// check the version
wxString token = tokenizer.GetNextToken();
if ( token != _T('0') )
return FALSE;
xFontName = tokenizer.GetNextToken();
// this should be the end
if ( tokenizer.HasMoreTokens() )
return FALSE;
return FromXFontName(xFontName);
}
wxString wxNativeFontInfo::ToString() const
{
// 0 is the version
return wxString::Format(_T("%d;%s"), 0, GetXFontName().c_str());
}
bool wxNativeFontInfo::FromUserString(const wxString& s)
{
return FromXFontName(s);
}
wxString wxNativeFontInfo::ToUserString() const
{
return GetXFontName();
}
bool wxNativeFontInfo::HasElements() const
{
// we suppose that the foundry is never empty, so if it is it means that we
// had never parsed the XLFD
return !fontElements[0].empty();
}
wxString wxNativeFontInfo::GetXFontComponent(wxXLFDField field) const
{
wxCHECK_MSG( field < wxXLFD_MAX, _T(""), _T("invalid XLFD field") );
if ( !HasElements() )
{
// const_cast
if ( !((wxNativeFontInfo *)this)->FromXFontName(xFontName) )
return _T("");
}
return fontElements[field];
}
bool wxNativeFontInfo::FromXFontName(const wxString& fontname)
{
// TODO: we should be able to handle the font aliases here, but how?
wxStringTokenizer tokenizer(fontname, _T("-"));
// skip the leading, usually empty field (font name registry)
if ( !tokenizer.HasMoreTokens() )
return FALSE;
(void)tokenizer.GetNextToken();
for ( size_t n = 0; n < WXSIZEOF(fontElements); n++ )
{
if ( !tokenizer.HasMoreTokens() )
{
// not enough elements in the XLFD - or maybe an alias
return FALSE;
}
wxString field = tokenizer.GetNextToken();
if ( !field.empty() && field != _T('*') )
{
// we're really initialized now
m_isDefault = FALSE;
}
fontElements[n] = field;
}
// this should be all
if ( tokenizer.HasMoreTokens() )
return FALSE;
return TRUE;
}
wxString wxNativeFontInfo::GetXFontName() const
{
if ( xFontName.empty() )
{
for ( size_t n = 0; n < WXSIZEOF(fontElements); n++ )
{
// replace the non specified elements with '*' except for the
// additional style which is usually just omitted
wxString elt = fontElements[n];
if ( elt.empty() && n != wxXLFD_ADDSTYLE )
{
elt = _T('*');
}
// const_cast
((wxNativeFontInfo *)this)->xFontName << _T('-') << elt;
}
}
return xFontName;
}
void
wxNativeFontInfo::SetXFontComponent(wxXLFDField field, const wxString& value)
{
wxCHECK_RET( field < wxXLFD_MAX, _T("invalid XLFD field") );
// this class should be initialized with a valid font spec first and only
// then the fields may be modified!
wxASSERT_MSG( !IsDefault(), _T("can't modify an uninitialized XLFD") );
if ( !HasElements() )
{
// const_cast
if ( !((wxNativeFontInfo *)this)->FromXFontName(xFontName) )
{
wxFAIL_MSG( _T("can't set font element for invalid XLFD") );
return;
}
}
fontElements[field] = value;
// invalidate the XFLD, it doesn't correspond to the font elements any more
xFontName.clear();
}
void wxNativeFontInfo::SetXFontName(const wxString& xFontName_)
{
// invalidate the font elements, GetXFontComponent() will reparse the XLFD
fontElements[0].clear();
xFontName = xFontName_;
m_isDefault = FALSE;
}
int wxNativeFontInfo::GetPointSize() const
{
const wxString s = GetXFontComponent(wxXLFD_POINTSIZE);
// return -1 to indicate that the size is unknown
long l;
return s.ToLong(&l) ? l : -1;
}
wxFontStyle wxNativeFontInfo::GetStyle() const
{
const wxString s = GetXFontComponent(wxXLFD_SLANT);
if ( s.length() != 1 )
{
// it is really unknown but we don't have any way to return it from
// here
return wxFONTSTYLE_NORMAL;
}
switch ( s[0] )
{
default:
// again, unknown but consider normal by default
case _T('r'):
return wxFONTSTYLE_NORMAL;
case _T('i'):
return wxFONTSTYLE_ITALIC;
case _T('o'):
return wxFONTSTYLE_SLANT;
}
}
wxFontWeight wxNativeFontInfo::GetWeight() const
{
const wxString s = GetXFontComponent(wxXLFD_WEIGHT).MakeLower();
if ( s.find(_T("bold")) != wxString::npos || s == _T("black") )
return wxFONTWEIGHT_BOLD;
else if ( s == _T("light") )
return wxFONTWEIGHT_LIGHT;
return wxFONTWEIGHT_NORMAL;
}
bool wxNativeFontInfo::GetUnderlined() const
{
// X fonts are never underlined
return FALSE;
}
wxString wxNativeFontInfo::GetFaceName() const
{
// wxWidgets facename probably more accurately corresponds to X family
return GetXFontComponent(wxXLFD_FAMILY);
}
wxFontFamily wxNativeFontInfo::GetFamily() const
{
// and wxWidgets family -- to X foundry, but we have to translate it to
// wxFontFamily somehow...
wxFAIL_MSG(_T("not implemented")); // GetXFontComponent(wxXLFD_FOUNDRY);
return wxFONTFAMILY_DEFAULT;
}
wxFontEncoding wxNativeFontInfo::GetEncoding() const
{
// we already have the code for this but need to refactor it first
wxFAIL_MSG( _T("not implemented") );
return wxFONTENCODING_MAX;
}
void wxNativeFontInfo::SetPointSize(int pointsize)
{
SetXFontComponent(wxXLFD_POINTSIZE, wxString::Format(_T("%d"), pointsize));
}
void wxNativeFontInfo::SetStyle(wxFontStyle style)
{
wxString s;
switch ( style )
{
case wxFONTSTYLE_ITALIC:
s = _T('i');
break;
case wxFONTSTYLE_SLANT:
s = _T('o');
break;
case wxFONTSTYLE_NORMAL:
s = _T('r');
default:
wxFAIL_MSG( _T("unknown wxFontStyle in wxNativeFontInfo::SetStyle") );
return;
}
SetXFontComponent(wxXLFD_SLANT, s);
}
void wxNativeFontInfo::SetWeight(wxFontWeight weight)
{
wxString s;
switch ( weight )
{
case wxFONTWEIGHT_BOLD:
s = _T("bold");
break;
case wxFONTWEIGHT_LIGHT:
s = _T("light");
break;
case wxFONTWEIGHT_NORMAL:
s = _T("medium");
break;
default:
wxFAIL_MSG( _T("unknown wxFontWeight in wxNativeFontInfo::SetWeight") );
return;
}
SetXFontComponent(wxXLFD_WEIGHT, s);
}
void wxNativeFontInfo::SetUnderlined(bool WXUNUSED(underlined))
{
// can't do this under X
}
void wxNativeFontInfo::SetFaceName(wxString facename)
{
SetXFontComponent(wxXLFD_FAMILY, facename);
}
void wxNativeFontInfo::SetFamily(wxFontFamily family)
{
// wxFontFamily -> X foundry, anyone?
wxFAIL_MSG( _T("not implemented") );
// SetXFontComponent(wxXLFD_FOUNDRY, ...);
}
void wxNativeFontInfo::SetEncoding(wxFontEncoding encoding)
{
wxNativeEncodingInfo info;
if ( wxGetNativeFontEncoding(encoding, &info) )
{
SetXFontComponent(wxXLFD_ENCODING, info.xencoding);
SetXFontComponent(wxXLFD_REGISTRY, info.xregistry);
}
}
// ----------------------------------------------------------------------------
// common functions
// ----------------------------------------------------------------------------
bool wxGetNativeFontEncoding(wxFontEncoding encoding,
wxNativeEncodingInfo *info)
{
wxCHECK_MSG( info, FALSE, _T("bad pointer in wxGetNativeFontEncoding") );
if ( encoding == wxFONTENCODING_DEFAULT )
{
encoding = wxFont::GetDefaultEncoding();
}
switch ( encoding )
{
case wxFONTENCODING_ISO8859_1:
case wxFONTENCODING_ISO8859_2:
case wxFONTENCODING_ISO8859_3:
case wxFONTENCODING_ISO8859_4:
case wxFONTENCODING_ISO8859_5:
case wxFONTENCODING_ISO8859_6:
case wxFONTENCODING_ISO8859_7:
case wxFONTENCODING_ISO8859_8:
case wxFONTENCODING_ISO8859_9:
case wxFONTENCODING_ISO8859_10:
case wxFONTENCODING_ISO8859_11:
case wxFONTENCODING_ISO8859_12:
case wxFONTENCODING_ISO8859_13:
case wxFONTENCODING_ISO8859_14:
case wxFONTENCODING_ISO8859_15:
{
int cp = encoding - wxFONTENCODING_ISO8859_1 + 1;
info->xregistry = wxT("iso8859");
info->xencoding.Printf(wxT("%d"), cp);
}
break;
case wxFONTENCODING_UTF8:
info->xregistry = wxT("iso10646");
info->xencoding = wxT("*");
break;
case wxFONTENCODING_GB2312:
info->xregistry = wxT("GB2312"); // or the otherway round?
info->xencoding = wxT("*");
break;
case wxFONTENCODING_KOI8:
case wxFONTENCODING_KOI8_U:
info->xregistry = wxT("koi8");
// we don't make distinction between koi8-r, koi8-u and koi8-ru (so far)
info->xencoding = wxT("*");
break;
case wxFONTENCODING_CP1250:
case wxFONTENCODING_CP1251:
case wxFONTENCODING_CP1252:
case wxFONTENCODING_CP1253:
case wxFONTENCODING_CP1254:
case wxFONTENCODING_CP1255:
case wxFONTENCODING_CP1256:
case wxFONTENCODING_CP1257:
{
int cp = encoding - wxFONTENCODING_CP1250 + 1250;
info->xregistry = wxT("microsoft");
info->xencoding.Printf(wxT("cp%d"), cp);
}
break;
case wxFONTENCODING_SYSTEM:
info->xregistry =
info->xencoding = wxT("*");
break;
default:
// don't know how to translate this encoding into X fontspec
return FALSE;
}
info->encoding = encoding;
return TRUE;
}
bool wxTestFontEncoding(const wxNativeEncodingInfo& info)
{
wxString fontspec;
fontspec.Printf(_T("-*-%s-*-*-*-*-*-*-*-*-*-*-%s-%s"),
!info.facename ? _T("*") : info.facename.c_str(),
info.xregistry.c_str(),
info.xencoding.c_str());
return wxTestFontSpec(fontspec);
}
// ----------------------------------------------------------------------------
// X-specific functions
// ----------------------------------------------------------------------------
wxNativeFont wxLoadQueryNearestFont(int pointSize,
int family,
int style,
int weight,
bool underlined,
const wxString &facename,
wxFontEncoding encoding,
wxString* xFontName)
{
if ( encoding == wxFONTENCODING_DEFAULT )
{
encoding = wxFont::GetDefaultEncoding();
}
// first determine the encoding - if the font doesn't exist at all in this
// encoding, it's useless to do all other approximations (i.e. size,
// family &c don't matter much)
wxNativeEncodingInfo info;
if ( encoding == wxFONTENCODING_SYSTEM )
{
// This will always work so we don't test to save time
wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
}
else
{
if ( !wxGetNativeFontEncoding(encoding, &info) ||
!wxTestFontEncoding(info) )
{
#if wxUSE_FONTMAP
if ( !wxFontMapper::Get()->GetAltForEncoding(encoding, &info) )
#endif // wxUSE_FONTMAP
{
// unspported encoding - replace it with the default
//
// NB: we can't just return 0 from here because wxGTK code doesn't
// check for it (i.e. it supposes that we'll always succeed),
// so it would provoke a crash
wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
}
}
}
// OK, we have the correct xregistry/xencoding in info structure
wxNativeFont font = 0;
// if we already have the X font name, try to use it
if( xFontName && !xFontName->IsEmpty() )
{
//
// Make sure point size is correct for scale factor.
//
wxStringTokenizer tokenizer(*xFontName, _T("-"), wxTOKEN_RET_DELIMS);
wxString newFontName;
for(int i = 0; i < 8; i++)
newFontName += tokenizer.NextToken();
(void) tokenizer.NextToken();
newFontName += wxString::Format(wxT("%d-"), pointSize);
while(tokenizer.HasMoreTokens())
newFontName += tokenizer.GetNextToken();
font = wxLoadFont(newFontName);
if(font)
*xFontName = newFontName;
}
if ( !font )
{
// search up and down by stepsize 10
int max_size = pointSize + 20 * (1 + (pointSize/180));
int min_size = pointSize - 20 * (1 + (pointSize/180));
int i, round; // counters
// first round: search for equal, then for smaller and for larger size with the given weight and style
int testweight = weight;
int teststyle = style;
for ( round = 0; round < 3; round++ )
{
// second round: use normal weight
if ( round == 1 )
{
if ( testweight != wxNORMAL )
{
testweight = wxNORMAL;
}
else
{
++round; // fall through to third round
}
}
// third round: ... and use normal style
if ( round == 2 )
{
if ( teststyle != wxNORMAL )
{
teststyle = wxNORMAL;
}
else
{
break;
}
}
// Search for equal or smaller size (approx.)
for ( i = pointSize; !font && i >= 10 && i >= min_size; i -= 10 )
{
font = wxLoadQueryFont(i, family, teststyle, testweight, underlined,
facename, info.xregistry, info.xencoding,
xFontName);
}
// Search for larger size (approx.)
for ( i = pointSize + 10; !font && i <= max_size; i += 10 )
{
font = wxLoadQueryFont(i, family, teststyle, testweight, underlined,
facename, info.xregistry, info.xencoding,
xFontName);
}
}
// Try default family
if ( !font && family != wxDEFAULT )
{
font = wxLoadQueryFont(pointSize, wxDEFAULT, style, weight,
underlined, facename,
info.xregistry, info.xencoding,
xFontName );
}
// ignore size, family, style and weight but try to find font with the
// given facename and encoding
if ( !font )
{
font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
underlined, facename,
info.xregistry, info.xencoding,
xFontName);
// ignore family as well
if ( !font )
{
font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
underlined, wxEmptyString,
info.xregistry, info.xencoding,
xFontName);
// if it still failed, try to get the font of any size but
// with the requested encoding: this can happen if the
// encoding is only available in one size which happens to be
// different from 120
if ( !font )
{
font = wxLoadQueryFont(-1, wxDEFAULT, wxNORMAL, wxNORMAL,
FALSE, wxEmptyString,
info.xregistry, info.xencoding,
xFontName);
// this should never happen as we had tested for it in the
// very beginning, but if it does, do return something non
// NULL or we'd crash in wxFont code
if ( !font )
{
wxFAIL_MSG( _T("this encoding should be available!") );
font = wxLoadQueryFont(-1,
wxDEFAULT, wxNORMAL, wxNORMAL,
FALSE, wxEmptyString,
_T("*"), _T("*"),
xFontName);
}
}
}
}
}
return font;
}
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
// returns TRUE if there are any fonts matching this font spec
static bool wxTestFontSpec(const wxString& fontspec)
{
// some X servers will fail to load this font because there are too many
// matches so we must test explicitly for this
if ( fontspec == _T("-*-*-*-*-*-*-*-*-*-*-*-*-*-*") )
{
return TRUE;
}
wxNativeFont test = (wxNativeFont) g_fontHash->Get( fontspec );
if (test)
{
return TRUE;
}
test = wxLoadFont(fontspec);
g_fontHash->Put( fontspec, (wxObject*) test );
if ( test )
{
wxFreeFont(test);
return TRUE;
}
else
{
return FALSE;
}
}
static wxNativeFont wxLoadQueryFont(int pointSize,
int family,
int style,
int weight,
bool WXUNUSED(underlined),
const wxString& facename,
const wxString& xregistry,
const wxString& xencoding,
wxString* xFontName)
{
wxString xfamily;
switch (family)
{
case wxDECORATIVE: xfamily = wxT("lucida"); break;
case wxROMAN: xfamily = wxT("times"); break;
case wxMODERN: xfamily = wxT("courier"); break;
case wxSWISS: xfamily = wxT("helvetica"); break;
case wxTELETYPE: xfamily = wxT("lucidatypewriter"); break;
case wxSCRIPT: xfamily = wxT("utopia"); break;
default: xfamily = wxT("*");
}
#if wxUSE_NANOX
int xweight;
switch (weight)
{
case wxBOLD:
{
xweight = MWLF_WEIGHT_BOLD;
break;
}
case wxLIGHT:
{
xweight = MWLF_WEIGHT_LIGHT;
break;
}
case wxNORMAL:
{
xweight = MWLF_WEIGHT_NORMAL;
break;
}
default:
{
xweight = MWLF_WEIGHT_DEFAULT;
break;
}
}
GR_SCREEN_INFO screenInfo;
GrGetScreenInfo(& screenInfo);
int yPixelsPerCM = screenInfo.ydpcm;
// A point is 1/72 of an inch.
// An inch is 2.541 cm.
// So pixelHeight = (pointSize / 72) (inches) * 2.541 (for cm) * yPixelsPerCM (for pixels)
// In fact pointSize is 10 * the normal point size so
// divide by 10.
int pixelHeight = (int) ( (((float)pointSize) / 720.0) * 2.541 * (float) yPixelsPerCM) ;
// An alternative: assume that the screen is 72 dpi.
//int pixelHeight = (int) (((float)pointSize / 720.0) * 72.0) ;
//int pixelHeight = (int) ((float)pointSize / 10.0) ;
GR_LOGFONT logFont;
logFont.lfHeight = pixelHeight;
logFont.lfWidth = 0;
logFont.lfEscapement = 0;
logFont.lfOrientation = 0;
logFont.lfWeight = xweight;
logFont.lfItalic = (style == wxNORMAL ? 0 : 1) ;
logFont.lfUnderline = 0;
logFont.lfStrikeOut = 0;
logFont.lfCharSet = MWLF_CHARSET_DEFAULT; // TODO: select appropriate one
logFont.lfOutPrecision = MWLF_TYPE_DEFAULT;
logFont.lfClipPrecision = 0; // Not used
logFont.lfRoman = (family == wxROMAN ? 1 : 0) ;
logFont.lfSerif = (family == wxSWISS ? 0 : 1) ;
logFont.lfSansSerif = !logFont.lfSerif ;
logFont.lfModern = (family == wxMODERN ? 1 : 0) ;
logFont.lfProportional = (family == wxTELETYPE ? 0 : 1) ;
logFont.lfOblique = 0;
logFont.lfSmallCaps = 0;
logFont.lfPitch = 0; // 0 = default
strcpy(logFont.lfFaceName, facename.c_str());
XFontStruct* fontInfo = (XFontStruct*) malloc(sizeof(XFontStruct));
fontInfo->fid = GrCreateFont((GR_CHAR*) facename.c_str(), pixelHeight, & logFont);
GrGetFontInfo(fontInfo->fid, & fontInfo->info);
return (wxNativeFont) fontInfo;
#else
wxString fontSpec;
if (!facename.IsEmpty())
{
fontSpec.Printf(wxT("-*-%s-*-*-normal-*-*-*-*-*-*-*-*-*"),
facename.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xfamily = facename;
}
//else: no such family, use default one instead
}
wxString xstyle;
switch (style)
{
case wxSLANT:
fontSpec.Printf(wxT("-*-%s-*-o-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xstyle = wxT("o");
break;
}
// fall through - try wxITALIC now
case wxITALIC:
fontSpec.Printf(wxT("-*-%s-*-i-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xstyle = wxT("i");
}
else if ( style == wxITALIC ) // and not wxSLANT
{
// try wxSLANT
fontSpec.Printf(wxT("-*-%s-*-o-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xstyle = wxT("o");
}
else
{
// no italic, no slant - leave default
xstyle = wxT("*");
}
}
break;
default:
wxFAIL_MSG(_T("unknown font style"));
// fall back to normal
case wxNORMAL:
xstyle = wxT("r");
break;
}
wxString xweight;
switch (weight)
{
case wxBOLD:
{
fontSpec.Printf(wxT("-*-%s-bold-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("bold");
break;
}
fontSpec.Printf(wxT("-*-%s-heavy-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("heavy");
break;
}
fontSpec.Printf(wxT("-*-%s-extrabold-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("extrabold");
break;
}
fontSpec.Printf(wxT("-*-%s-demibold-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("demibold");
break;
}
fontSpec.Printf(wxT("-*-%s-black-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("black");
break;
}
fontSpec.Printf(wxT("-*-%s-ultrablack-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("ultrablack");
break;
}
}
break;
case wxLIGHT:
{
fontSpec.Printf(wxT("-*-%s-light-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("light");
break;
}
fontSpec.Printf(wxT("-*-%s-thin-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("thin");
break;
}
}
break;
case wxNORMAL:
{
fontSpec.Printf(wxT("-*-%s-medium-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("medium");
break;
}
fontSpec.Printf(wxT("-*-%s-normal-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("normal");
break;
}
fontSpec.Printf(wxT("-*-%s-regular-*-*-*-*-*-*-*-*-*-*-*"),
xfamily.c_str());
if ( wxTestFontSpec(fontSpec) )
{
xweight = wxT("regular");
break;
}
xweight = wxT("*");
}
break;
default: xweight = wxT("*"); break;
}
// if pointSize is -1, don't specify any
wxString sizeSpec;
if ( pointSize == -1 )
{
sizeSpec = _T('*');
}
else
{
sizeSpec.Printf(_T("%d"), pointSize);
}
// construct the X font spec from our data
fontSpec.Printf(wxT("-*-%s-%s-%s-normal-*-*-%s-*-*-*-*-%s-%s"),
xfamily.c_str(), xweight.c_str(), xstyle.c_str(),
sizeSpec.c_str(), xregistry.c_str(), xencoding.c_str());
if( xFontName )
*xFontName = fontSpec;
return wxLoadFont(fontSpec);
#endif
// wxUSE_NANOX
}
// ----------------------------------------------------------------------------
// wxFontModule
// ----------------------------------------------------------------------------
class wxFontModule : public wxModule
{
public:
bool OnInit();
void OnExit();
private:
DECLARE_DYNAMIC_CLASS(wxFontModule)
};
IMPLEMENT_DYNAMIC_CLASS(wxFontModule, wxModule)
bool wxFontModule::OnInit()
{
g_fontHash = new wxHashTable( wxKEY_STRING );
return TRUE;
}
void wxFontModule::OnExit()
{
delete g_fontHash;
g_fontHash = (wxHashTable *)NULL;
}
#endif // GTK 2.0/1.x
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