Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
8e991510c50ad0ee7e8d40101a7584ef151d7ac4
wxWidgets/src/unix/fontutil.cpp
Maarten Bent 0438ca19c1 Fix implicit-fallthrough warning
2020-12-23 17:03:05 +01:00

1408 lines
42 KiB
C++
Raw Blame History

/////////////////////////////////////////////////////////////////////////////
// Name: src/unix/fontutil.cpp
// Purpose: Font helper functions for wxX11, wxGTK, wxMotif
// Author: Vadim Zeitlin
// Modified by:
// Created: 05.11.99
// Copyright: (c) Vadim Zeitlin
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/fontutil.h"
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/font.h" // wxFont enums
#include "wx/hash.h"
#include "wx/utils.h" // for wxGetDisplay()
#include "wx/module.h"
#endif // PCH
#include "wx/encinfo.h"
#include "wx/fontmap.h"
#include "wx/math.h"
#include "wx/tokenzr.h"
#include "wx/fontenum.h"
#if wxUSE_PANGO
#include <pango/pango.h>
PangoContext* wxGetPangoContext();
#ifdef __WXGTK20__
#include "wx/gtk/private.h"
#define wxPANGO_CONV wxGTK_CONV_SYS
#define wxPANGO_CONV_BACK wxGTK_CONV_BACK_SYS
#else
#include "wx/x11/private.h"
#include "wx/gtk/private/string.h"
#define wxPANGO_CONV(s) s.utf8_str()
#define wxPANGO_CONV_BACK(s) wxString::FromUTF8Unchecked(s)
#endif
// ----------------------------------------------------------------------------
// wxNativeFontInfo
// ----------------------------------------------------------------------------
void wxNativeFontInfo::Init()
{
description = NULL;
m_underlined = false;
m_strikethrough = false;
}
void wxNativeFontInfo::Init(const wxNativeFontInfo& info)
{
if (info.description)
{
description = pango_font_description_copy(info.description);
m_underlined = info.GetUnderlined();
m_strikethrough = info.GetStrikethrough();
}
else
{
description = NULL;
m_underlined = false;
m_strikethrough = false;
}
}
void wxNativeFontInfo::Free()
{
if (description)
pango_font_description_free(description);
}
double wxNativeFontInfo::GetFractionalPointSize() const
{
return double(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;
}
int wxNativeFontInfo::GetNumericWeight() const
{
// 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;
PangoWeight pango_weight = pango_font_description_get_weight( description );
return pango_weight;
}
bool wxNativeFontInfo::GetUnderlined() const
{
return m_underlined;
}
bool wxNativeFontInfo::GetStrikethrough() const
{
return m_strikethrough;
}
wxString wxNativeFontInfo::GetFaceName() const
{
// the Pango "family" is the wx "face name"
return wxPANGO_CONV_BACK(pango_font_description_get_family(description));
}
wxFontFamily wxNativeFontInfo::GetFamily() const
{
wxFontFamily ret = wxFONTFAMILY_UNKNOWN;
const char *family_name = pango_font_description_get_family( description );
// note: not passing -1 as the 2nd parameter to g_ascii_strdown to work
// around a bug in the 64-bit glib shipped with solaris 10, -1 causes it
// to try to allocate 2^32 bytes.
if ( !family_name )
return ret;
wxGtkString family_text(g_ascii_strdown(family_name, strlen(family_name)));
// Check for some common fonts, to salvage what we can from the current
// win32 centric wxFont API:
if (wxStrnicmp( family_text, "monospace", 9 ) == 0)
ret = wxFONTFAMILY_TELETYPE; // begins with "Monospace"
else if (wxStrnicmp( family_text, "courier", 7 ) == 0)
ret = wxFONTFAMILY_TELETYPE; // begins with "Courier"
#if defined(__WXGTK20__) || defined(HAVE_PANGO_FONT_FAMILY_IS_MONOSPACE)
else
{
PangoFontFamily **families;
PangoFontFamily *family = NULL;
int n_families;
PangoContext* context = wxGetPangoContext();
pango_context_list_families(context, &families, &n_families);
for (int i = 0; i < n_families; ++i)
{
if (g_ascii_strcasecmp(pango_font_family_get_name( families[i] ),
pango_font_description_get_family( description )) == 0 )
{
family = families[i];
break;
}
}
g_free(families);
g_object_unref(context);
// Some gtk+ systems might query for a non-existing font from
// wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT) on initialization,
// don't assert until wxSystemSettings::GetFont is checked for this - MR
// wxASSERT_MSG( family, "No appropriate PangoFontFamily found for ::description" );
if (family != NULL && pango_font_family_is_monospace( family ))
ret = wxFONTFAMILY_TELETYPE; // is deemed a monospace font by pango
}
#endif // GTK+ 2 || HAVE_PANGO_FONT_FAMILY_IS_MONOSPACE
if (ret == wxFONTFAMILY_UNKNOWN)
{
if (strstr( family_text, "sans" ) != NULL || strstr( family_text, "Sans" ) != NULL)
// checked before serif, so that "* Sans Serif" fonts are detected correctly
ret = wxFONTFAMILY_SWISS; // contains "Sans"
else if (strstr( family_text, "serif" ) != NULL || strstr( family_text, "Serif" ) != NULL)
ret = wxFONTFAMILY_ROMAN; // contains "Serif"
else if (wxStrnicmp( family_text, "times", 5 ) == 0)
ret = wxFONTFAMILY_ROMAN; // begins with "Times"
else if (wxStrnicmp( family_text, "old", 3 ) == 0)
ret = wxFONTFAMILY_DECORATIVE; // begins with "Old" - "Old English", "Old Town"
}
return ret;
}
wxFontEncoding wxNativeFontInfo::GetEncoding() const
{
return wxFONTENCODING_SYSTEM;
}
void wxNativeFontInfo::SetFractionalPointSize(double pointsize)
{
pango_font_description_set_size( description, wxRound(pointsize * PANGO_SCALE) );
}
void wxNativeFontInfo::SetStyle(wxFontStyle style)
{
switch (style)
{
case wxFONTSTYLE_ITALIC:
pango_font_description_set_style( description, PANGO_STYLE_ITALIC );
break;
case wxFONTSTYLE_SLANT:
pango_font_description_set_style( description, PANGO_STYLE_OBLIQUE );
break;
default:
wxFAIL_MSG( "unknown font style" );
wxFALLTHROUGH;
case wxFONTSTYLE_NORMAL:
pango_font_description_set_style( description, PANGO_STYLE_NORMAL );
break;
}
}
void wxNativeFontInfo::SetNumericWeight(int weight)
{
pango_font_description_set_weight(description, (PangoWeight) weight);
}
void wxNativeFontInfo::SetUnderlined(bool underlined)
{
// Pango doesn't have the underlined attribute so we store it separately
// (and handle it specially in wxWindowDCImpl::DoDrawText()).
m_underlined = underlined;
}
void wxNativeFontInfo::SetStrikethrough(bool strikethrough)
{
// As with the underlined attribute above, we handle this one separately as
// Pango doesn't support it as part of the font description.
m_strikethrough = strikethrough;
}
bool wxNativeFontInfo::SetFaceName(const wxString& facename)
{
pango_font_description_set_family(description, wxPANGO_CONV(facename));
// we return true because Pango doesn't tell us if the call failed or not;
// instead on wxGTK wxFont::SetFaceName() will call wxFontBase::SetFaceName()
// which does the check
return true;
}
void wxNativeFontInfo::SetFamily(wxFontFamily family)
{
wxArrayString facename;
// the list of fonts associated with a family was partially
// taken from http://www.codestyle.org/css/font-family
switch ( family )
{
case wxFONTFAMILY_SCRIPT:
// corresponds to the cursive font family in the page linked above
facename.Add(wxS("URW Chancery L"));
facename.Add(wxS("Comic Sans MS"));
break;
case wxFONTFAMILY_DECORATIVE:
// corresponds to the fantasy font family in the page linked above
facename.Add(wxS("Impact"));
break;
case wxFONTFAMILY_ROMAN:
// corresponds to the serif font family in the page linked above
facename.Add(wxS("Serif"));
facename.Add(wxS("DejaVu Serif"));
facename.Add(wxS("DejaVu LGC Serif"));
facename.Add(wxS("Bitstream Vera Serif"));
facename.Add(wxS("Liberation Serif"));
facename.Add(wxS("FreeSerif"));
facename.Add(wxS("Luxi Serif"));
facename.Add(wxS("Times New Roman"));
facename.Add(wxS("Century Schoolbook L"));
facename.Add(wxS("URW Bookman L"));
facename.Add(wxS("URW Palladio L"));
facename.Add(wxS("Times"));
break;
case wxFONTFAMILY_TELETYPE:
case wxFONTFAMILY_MODERN:
// corresponds to the monospace font family in the page linked above
facename.Add(wxS("Monospace"));
facename.Add(wxS("DejaVu Sans Mono"));
facename.Add(wxS("DejaVu LGC Sans Mono"));
facename.Add(wxS("Bitstream Vera Sans Mono"));
facename.Add(wxS("Liberation Mono"));
facename.Add(wxS("FreeMono"));
facename.Add(wxS("Luxi Mono"));
facename.Add(wxS("Courier New"));
facename.Add(wxS("Lucida Sans Typewriter"));
facename.Add(wxS("Nimbus Mono L"));
facename.Add(wxS("Andale Mono"));
facename.Add(wxS("Courier"));
break;
case wxFONTFAMILY_SWISS:
case wxFONTFAMILY_DEFAULT:
default:
// corresponds to the sans-serif font family in the page linked above
facename.Add(wxS("Sans"));
facename.Add(wxS("DejaVu Sans"));
facename.Add(wxS("DejaVu LGC Sans"));
facename.Add(wxS("Bitstream Vera Sans"));
facename.Add(wxS("Liberation Sans"));
facename.Add(wxS("FreeSans"));
facename.Add(wxS("Luxi Sans"));
facename.Add(wxS("Arial"));
facename.Add(wxS("Lucida Sans"));
facename.Add(wxS("Nimbus Sans L"));
facename.Add(wxS("URW Gothic L"));
break;
}
SetFaceName(facename);
}
void wxNativeFontInfo::SetEncoding(wxFontEncoding WXUNUSED(encoding))
{
wxFAIL_MSG( "not implemented: Pango encoding is always UTF8" );
}
bool wxNativeFontInfo::FromString(const wxString& s)
{
wxString str(s);
// Pango font description doesn't have 'underlined' or 'strikethrough'
// attributes, so we handle them specially by extracting them from the
// string before passing it to Pango.
m_underlined = str.StartsWith(wxS("underlined "), &str);
m_strikethrough = str.StartsWith(wxS("strikethrough "), &str);
if (description)
pango_font_description_free( description );
// there is a bug in at least pango <= 1.13 which makes it (or its backends)
// segfault for very big point sizes and for negative point sizes.
// To workaround that bug for pango <= 1.13
// (see http://bugzilla.gnome.org/show_bug.cgi?id=340229)
// we do the check on the size here using same (arbitrary) limits used by
// pango > 1.13. Note that the segfault could happen also for pointsize
// smaller than this limit !!
const size_t pos = str.find_last_of(wxS(" "));
double size;
if ( pos != wxString::npos && wxString(str, pos + 1).ToDouble(&size) )
{
wxString sizeStr;
if ( size < 1 )
sizeStr = wxS("1");
else if ( size >= 1E6 )
sizeStr = wxS("1E6");
if ( !sizeStr.empty() )
{
// replace the old size with the adjusted one
str = wxString(s, 0, pos) + sizeStr;
}
}
description = pango_font_description_from_string(wxPANGO_CONV(str));
#if wxUSE_FONTENUM
// ensure a valid facename is selected
if (!wxFontEnumerator::IsValidFacename(GetFaceName()))
SetFaceName(wxNORMAL_FONT->GetFaceName());
#endif // wxUSE_FONTENUM
return true;
}
wxString wxNativeFontInfo::ToString() const
{
wxGtkString str(pango_font_description_to_string( description ));
wxString desc = wxPANGO_CONV_BACK(str);
// Augment the string with the attributes not handled by Pango.
//
// Notice that we must add them in the same order they are extracted in
// FromString() above.
if (m_strikethrough)
desc.insert(0, wxS("strikethrough "));
if (m_underlined)
desc.insert(0, wxS("underlined "));
return desc;
}
bool wxNativeFontInfo::FromUserString(const wxString& s)
{
return FromString( s );
}
wxString wxNativeFontInfo::ToUserString() const
{
return ToString();
}
#else // GTK+ 1.x
#ifdef __X__
#ifdef __VMS__
#pragma message disable nosimpint
#endif
#include <X11/Xlib.h>
#ifdef __VMS__
#pragma message enable nosimpint
#endif
#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 = 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(double pointSize,
wxFontFamily family,
wxFontStyle 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, wxT(";"));
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 << wxT(';') << xregistry << wxT(';') << xencoding;
if ( !facename.empty() )
{
s << wxT(';') << facename;
}
return s;
}
// ----------------------------------------------------------------------------
// wxNativeFontInfo
// ----------------------------------------------------------------------------
void wxNativeFontInfo::Init()
{
m_isDefault = true;
}
bool wxNativeFontInfo::FromString(const wxString& s)
{
wxStringTokenizer tokenizer(s, wxT(";"));
// check the version
wxString token = tokenizer.GetNextToken();
if ( token != wxT('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(wxT("%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, wxEmptyString, wxT("invalid XLFD field") );
if ( !HasElements() )
{
if ( !const_cast<wxNativeFontInfo *>(this)->FromXFontName(xFontName) )
return wxEmptyString;
}
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, wxT("-"));
// 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 != wxT('*') )
{
// 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 = wxT('*');
}
const_cast<wxNativeFontInfo *>(this)->xFontName << wxT('-') << elt;
}
}
return xFontName;
}
void
wxNativeFontInfo::SetXFontComponent(wxXLFDField field, const wxString& value)
{
wxCHECK_RET( field < wxXLFD_MAX, wxT("invalid XLFD field") );
if ( !HasElements() )
{
for ( int field = 0; field < wxXLFD_MAX; field++ )
fontElements[field] = '*';
}
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;
}
double wxNativeFontInfo::GetFractionalPointSize() 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].GetValue() )
{
default:
// again, unknown but consider normal by default
case wxT('r'):
return wxFONTSTYLE_NORMAL;
case wxT('i'):
return wxFONTSTYLE_ITALIC;
case wxT('o'):
return wxFONTSTYLE_SLANT;
}
}
int wxNativeFontInfo::GetNumericWeight() const
{
const wxString weight = GetXFontComponent(wxXLFD_WEIGHT).MakeLower();
if (weight == wxT("thin") || weight == wxT("ultralight"))
return wxFONTWEIGHT_THIN;
else if (weight == wxT("extralight"))
return wxFONTWEIGHT_EXTRALIGHT;
else if (weight == wxT("light"))
return wxFONTWEIGHT_LIGHT;
else if (weight == wxT("book") || weight == wxT("semilight") || weight == wxT("demilight"))
return 350;
else if (weight == wxT("medium"))
return wxFONTWEIGHT_MEDIUM;
else if (weight == wxT("semibold") || weight == wxT("demibold"))
return wxFONTWEIGHT_SEMIBOLD;
else if (weight == wxT("bold"))
return wxFONTWEIGHT_BOLD;
else if (weight == wxT("extrabold"))
return wxFONTWEIGHT_EXTRABOLD;
else if (weight == wxT("heavy"))
return wxFONTWEIGHT_HEAVY;
else if (weight == wxT("extraheavy") || weight == wxT("black") || weight == wxT("ultrabold"))
return wxFONTWEIGHT_EXTRAHEAVY;
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(wxT("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( wxT("not implemented") );
return wxFONTENCODING_MAX;
}
void wxNativeFontInfo::SetFractionalPointSize(double pointsize)
{
wxString s;
if ( pointsize < 0 )
s = '*';
else
s.Printf("%d", wxRound(10*pointsize));
SetXFontComponent(wxXLFD_POINTSIZE, s);
}
void wxNativeFontInfo::SetStyle(wxFontStyle style)
{
wxString s;
switch ( style )
{
case wxFONTSTYLE_ITALIC:
s = wxT('i');
break;
case wxFONTSTYLE_SLANT:
s = wxT('o');
break;
case wxFONTSTYLE_NORMAL:
s = wxT('r');
break;
default:
wxFAIL_MSG( wxT("unknown wxFontStyle in wxNativeFontInfo::SetStyle") );
return;
}
SetXFontComponent(wxXLFD_SLANT, s);
}
void wxNativeFontInfo::SetNumericWeight(int weight)
{
wxString s;
switch ( wxFontInfo::GetWeightClosestToNumericValue(weight) )
{
case wxFONTWEIGHT_THIN:
s = "thin";
break;
case wxFONTWEIGHT_EXTRALIGHT:
s = "extralight";
break;
case wxFONTWEIGHT_LIGHT:
s = "light";
break;
case wxFONTWEIGHT_NORMAL:
s = "normal";
break;
case wxFONTWEIGHT_MEDIUM:
s = "medium";
break;
case wxFONTWEIGHT_SEMIBOLD:
s = "semibold";
break;
case wxFONTWEIGHT_BOLD:
s = "bold";
break;
case wxFONTWEIGHT_EXTRABOLD:
s = "extrabold";
break;
case wxFONTWEIGHT_HEAVY:
s = "heavy";
break;
case wxFONTWEIGHT_EXTRAHEAVY:
s = "extraheavy";
break;
case wxFONTWEIGHT_INVALID:
wxFAIL_MSG( "Invalid font weight" );
break;
}
wxCHECK_RET( !s.empty(), "unknown weight value" );
SetXFontComponent(wxXLFD_WEIGHT, s);
}
void wxNativeFontInfo::SetUnderlined(bool WXUNUSED(underlined))
{
// can't do this under X
}
void wxNativeFontInfo::SetStrikethrough(bool WXUNUSED(strikethrough))
{
// this is not supported by Pango fonts neither
}
bool wxNativeFontInfo::SetFaceName(const wxString& facename)
{
SetXFontComponent(wxXLFD_FAMILY, facename);
return true;
}
void wxNativeFontInfo::SetFamily(wxFontFamily family)
{
wxString xfamily;
switch (family)
{
case wxFONTFAMILY_DECORATIVE: xfamily = "lucida"; break;
case wxFONTFAMILY_ROMAN: xfamily = "times"; break;
case wxFONTFAMILY_MODERN: xfamily = "courier"; break;
case wxFONTFAMILY_DEFAULT:
case wxFONTFAMILY_SWISS: xfamily = "helvetica"; break;
case wxFONTFAMILY_TELETYPE: xfamily = "lucidatypewriter"; break;
case wxFONTFAMILY_SCRIPT: xfamily = "utopia"; break;
case wxFONTFAMILY_UNKNOWN: break;
}
wxCHECK_RET( !xfamily.empty(), "Unknown wxFontFamily" );
SetXFontComponent(wxXLFD_FAMILY, xfamily);
}
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, wxT("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_EUC_JP:
case wxFONTENCODING_SHIFT_JIS:
info->xregistry = "jis*";
info->xencoding = "*";
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(wxT("-*-%s-*-*-*-*-*-*-*-*-*-*-%s-%s"),
info.facename.empty() ? wxString("*") : info.facename,
info.xregistry,
info.xencoding);
return wxTestFontSpec(fontspec);
}
// ----------------------------------------------------------------------------
// X-specific functions
// ----------------------------------------------------------------------------
wxNativeFont wxLoadQueryNearestFont(double pointSize,
wxFontFamily family,
wxFontStyle 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->empty() )
{
//
// Make sure point size is correct for scale factor.
//
wxStringTokenizer tokenizer(*xFontName, wxT("-"), 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;
wxFontStyle teststyle = style;
for ( round = 0; round < 3; round++ )
{
// second round: use normal weight
if ( round == 1 )
{
if ( testweight != wxFONTWEIGHT_NORMAL )
{
testweight = wxFONTWEIGHT_NORMAL;
}
else
{
++round; // fall through to third round
}
}
// third round: ... and use normal style
if ( round == 2 )
{
if ( teststyle != wxFONTSTYLE_NORMAL )
{
teststyle = wxFONTSTYLE_NORMAL;
}
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 != wxFONTFAMILY_DEFAULT )
{
font = wxLoadQueryFont(pointSize, wxFONTFAMILY_DEFAULT, 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, wxFONTFAMILY_DEFAULT,
wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL,
underlined, facename,
info.xregistry, info.xencoding,
xFontName);
// ignore family as well
if ( !font )
{
font = wxLoadQueryFont(120, wxFONTFAMILY_DEFAULT,
wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL,
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, wxFONTFAMILY_DEFAULT,
wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL,
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( wxT("this encoding should be available!") );
font = wxLoadQueryFont(-1, wxFONTFAMILY_DEFAULT,
wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL,
false, wxEmptyString,
wxT("*"), wxT("*"),
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 == wxT("-*-*-*-*-*-*-*-*-*-*-*-*-*-*") )
{
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(double pointSize,
wxFontFamily family,
wxFontStyle style,
int weight,
bool WXUNUSED(underlined),
const wxString& facename,
const wxString& xregistry,
const wxString& xencoding,
wxString* xFontName)
{
#if wxUSE_NANOX
int xweight;
switch (weight)
{
case wxFONTWEIGHT_BOLD:
{
xweight = MWLF_WEIGHT_BOLD;
break;
}
case wxFONTWEIGHT_LIGHT:
{
xweight = MWLF_WEIGHT_LIGHT;
break;
}
case wxFONTWEIGHT_NORMAL:
{
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 == wxFONTSTYLE_ITALIC ? 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 == wxFONTFAMILY_ROMAN ? 1 : 0) ;
logFont.lfSerif = (family == wxFONTFAMILY_SWISS ? 0 : 1) ;
logFont.lfSansSerif = !logFont.lfSerif ;
logFont.lfModern = (family == wxFONTFAMILY_MODERN ? 1 : 0) ;
logFont.lfProportional = (family == wxFONTFAMILY_TELETYPE ? 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
wxNativeFontInfo info;
info.SetFractionalPointSize(pointSize);
if ( !facename.empty() )
{
info.SetFaceName(facename);
if ( !wxTestFontSpec(info.GetXFontName()) )
{
// No such face name, use just the family (we assume this will
// never fail).
info.SetFamily(family);
}
}
else
{
info.SetFamily(family);
}
wxNativeFontInfo infoWithStyle(info);
infoWithStyle.SetStyle(style);
if ( wxTestFontSpec(infoWithStyle.GetXFontName()) )
info = infoWithStyle;
wxNativeFontInfo infoWithWeight(info);
infoWithWeight.SetNumericWeight(weight);
if ( wxTestFontSpec(infoWithWeight.GetXFontName()) )
info = infoWithWeight;
// construct the X font spec from our data
wxString fontSpec;
fontSpec.Printf("-*-%s-%s-%s-normal-*-*-%s-*-*-*-*-%s-%s",
info.GetXFontComponent(wxXLFD_FAMILY),
info.GetXFontComponent(wxXLFD_WEIGHT),
info.GetXFontComponent(wxXLFD_SLANT),
info.GetXFontComponent(wxXLFD_POINTSIZE),
xregistry,
xencoding);
if( xFontName )
*xFontName = fontSpec;
return wxLoadFont(fontSpec);
#endif
// wxUSE_NANOX
}
// ----------------------------------------------------------------------------
// wxFontModule
// ----------------------------------------------------------------------------
class wxFontModule : public wxModule
{
public:
bool OnInit();
void OnExit();
private:
wxDECLARE_DYNAMIC_CLASS(wxFontModule);
};
wxIMPLEMENT_DYNAMIC_CLASS(wxFontModule, wxModule);
bool wxFontModule::OnInit()
{
g_fontHash = new wxHashTable( wxKEY_STRING );
return true;
}
void wxFontModule::OnExit()
{
wxDELETE(g_fontHash);
}
#endif // GTK 2.0/1.x
Reference in New Issue View Git Blame Copy Permalink