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// XftFontImp.cc Xft font implementation for FbTk
// Copyright (c) 2002 Henrik Kinnunen (fluxgen@linuxmail.org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//$Id: XftFontImp.cc,v 1.5 2004/09/10 16:12:49 akir Exp $
#include "XftFontImp.hh"
#include "App.hh"
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif //HAVE_CONFIG_H
namespace FbTk {
XftFontImp::XftFontImp(const char *name, bool utf8):m_xftfont(0),
m_utf8mode(utf8) {
if (name != 0)
load(name);
}
XftFontImp::~XftFontImp() {
if (m_xftfont != 0)
XftFontClose(App::instance()->display(), m_xftfont);
}
bool XftFontImp::load(const std::string &name) {
//Note: assumes screen 0 for now, changes on draw if needed
Display *disp = App::instance()->display();
XftFont *newxftfont = XftFontOpenName(disp, 0, name.c_str());
if (newxftfont == 0) { // failed to open font, lets test with XLFD
newxftfont = XftFontOpenXlfd(disp, 0, name.c_str());
if (newxftfont == 0)
return false;
}
// destroy old font and set new
if (m_xftfont != 0)
XftFontClose(disp, m_xftfont);
m_xftfont = newxftfont;
return true;
}
void XftFontImp::drawText(Drawable w, int screen, GC gc, const char *text, size_t len, int x, int y) const {
if (m_xftfont == 0)
return;
Display *disp = App::instance()->display();
XftDraw *draw = XftDrawCreate(disp,
w,
DefaultVisual(disp, screen),
DefaultColormap(disp, screen));
XGCValues gc_val;
// get foreground pixel value and convert it to XRenderColor value
// TODO: we should probably check return status
XGetGCValues(disp, gc, GCForeground, &gc_val);
// get red, green, blue values
XColor xcol;
xcol.pixel = gc_val.foreground;
XQueryColor(disp, DefaultColormap(disp, screen), &xcol);
// convert xcolor to XftColor
XRenderColor rendcol;
rendcol.red = xcol.red;
rendcol.green = xcol.green;
rendcol.blue = xcol.blue;
rendcol.alpha = 0xFFFF;
XftColor xftcolor;
XftColorAllocValue(disp, DefaultVisual(disp, screen), DefaultColormap(disp, screen),
&rendcol, &xftcolor);
// draw string
#ifdef HAVE_XFT_UTF8_STRING
if (m_utf8mode) {
// check the string size,
// if the size is zero we use the XftDrawString8 function instead.
XGlyphInfo ginfo;
XftTextExtentsUtf8(App::instance()->display(),
m_xftfont,
(XftChar8 *)text, len,
&ginfo);
if (ginfo.xOff != 0) {
XftDrawStringUtf8(draw,
&xftcolor,
m_xftfont,
x, y,
(XftChar8 *)(text), len);
XftColorFree(disp, DefaultVisual(disp, screen),
DefaultColormap(disp, screen), &xftcolor);
XftDrawDestroy(draw);
return;
}
}
#endif // HAVE_XFT_UTF8_STRING
XftDrawString8(draw,
&xftcolor,
m_xftfont,
x, y,
(XftChar8 *)(text), len);
XftColorFree(disp, DefaultVisual(disp, screen),
DefaultColormap(disp, screen), &xftcolor);
XftDrawDestroy(draw);
}
unsigned int XftFontImp::textWidth(const char * const text, unsigned int len) const {
if (m_xftfont == 0)
return 0;
XGlyphInfo ginfo;
Display* disp = App::instance()->display();
#ifdef HAVE_XFT_UTF8_STRING
if (m_utf8mode) {
XftTextExtentsUtf8(disp,
m_xftfont,
(XftChar8 *)text, len,
&ginfo);
if (ginfo.xOff != 0)
return ginfo.xOff;
// the utf8 failed, try normal extents
}
#endif //HAVE_XFT_UTF8_STRING
XftTextExtents8(disp,
m_xftfont,
(XftChar8 *)text, len,
&ginfo);
return ginfo.xOff;
}
unsigned int XftFontImp::height() const {
if (m_xftfont == 0)
return 0;
return m_xftfont->height;
//m_xftfont->ascent + m_xftfont->descent;
// curiously, fonts seem to have a smaller height, but the "height"
// is specified within the actual font, so it must be right, right?
}
}; // end namespace FbTk
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