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FontTable.C
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1998-11-23
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// $Id: FontTable.C,v 1.10 1998/11/23 17:43:25 zeller Exp $
// Font tables
// Copyright (C) 1995 Technische Universitaet Braunschweig, Germany.
// Written by Andreas Zeller <zeller@ips.cs.tu-bs.de>.
//
// This file is part of DDD.
//
// DDD is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// DDD is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with DDD -- see the file COPYING.
// If not, write to the Free Software Foundation, Inc.,
// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// DDD is the data display debugger.
// For details, see the DDD World-Wide-Web page,
// `http://www.cs.tu-bs.de/softech/ddd/',
// or send a mail to the DDD developers <ddd@ips.cs.tu-bs.de>.
char FontTable_rcsid[] =
"$Id: FontTable.C,v 1.10 1998/11/23 17:43:25 zeller Exp $";
#ifdef __GNUG__
#pragma implementation
#endif
#include "assert.h"
#include "hash.h"
#include "strclass.h"
#include <iostream.h>
#include <X11/Xlib.h>
#include <X11/Intrinsic.h>
#include "FontTable.h"
DEFINE_TYPE_INFO_0(FontTable)
// FontTable
// Return hash code
inline unsigned hash(const char *name)
{
return hashpjw(name) % MAX_FONTS;
}
// Return XFontStruct for given font name NAME
XFontStruct *FontTable::operator[](string& name)
{
int i = hash(name);
while (table[i].font != 0 && name != table[i].name)
{
assert (i < MAX_FONTS); // Too many fonts
i = (i >= MAX_FONTS) ? 0 : i + 1;
}
if (table[i].font == 0 && name != table[i].name)
{
// Insert new font
table[i].name = name;
table[i].font = XLoadQueryFont(_display, name);
if (table[i].font == 0)
{
cerr << "Warning: Could not load font \"" << name << "\"";
// Try default font
GC default_gc =
DefaultGCOfScreen(DefaultScreenOfDisplay(_display));
XGCValues gc_values;
if (XGetGCValues(_display, default_gc, GCFont, &gc_values))
{
const Font& font_id = gc_values.font;
XFontStruct *font = XQueryFont(_display, font_id);
if (font != 0)
{
cerr << ", using default font instead\n";
table[i].font = font;
}
}
}
if (table[i].font == 0)
{
// Try "fixed" font
XFontStruct *font = XLoadQueryFont(_display, "fixed");
if (font != 0)
{
cerr << ", using font \"fixed\" instead\n";
table[i].font = font;
}
}
if (table[i].font == 0)
cerr << "\n";
}
return table[i].font;
}