A src/XftFontImp.cc

@@ -0,0 +1,112 @@ 
+// 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 1.1 2002/10/14 18:14:20 fluxgen Exp $
+
+#include "XftFontImp.hh"
+#include "BaseDisplay.hh"
+
+XftFontImp::XftFontImp(const char *name):m_xftfont(0) {
+	if (name != 0)
+		load(name);
+}
+
+XftFontImp::~XftFontImp() {
+	if (m_xftfont != 0)
+		XftFontClose(BaseDisplay::getXDisplay(), m_xftfont);
+}
+
+bool XftFontImp::load(const std::string &name) {
+	//Note: assumes screen 0 for now, changes on draw if needed
+	
+	Display *disp = BaseDisplay::getXDisplay();
+	XftFont *newxftfont = XftFontOpenName(disp, 0, name.c_str());
+		
+	if (newxftfont == 0) // failed to open font, use old fon
+		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 = BaseDisplay::getXDisplay();
+	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
+	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 *text, unsigned int len) const {
+	if (m_xftfont == 0)
+		return 0;
+	XGlyphInfo ginfo;
+	XftTextExtents8(BaseDisplay::getXDisplay(),
+		m_xftfont,
+		(XftChar8 *)text, len,
+		&ginfo);
+	return ginfo.xOff;
+}
+
+unsigned int XftFontImp::height() const {
+	if (m_xftfont == 0)
+		return 0;
+	return m_xftfont->ascent + m_xftfont->descent;
+}

A src/XftFontImp.hh

@@ -0,0 +1,42 @@ 
+// XftFontImp.hh  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.hh,v 1.1 2002/10/14 18:14:13 fluxgen Exp $
+
+#ifndef XFTFONTIMP_HH
+#define XFTFONTIMP_HH
+
+#include "FontImp.hh"
+#include <X11/Xft/Xft.h>
+
+class XftFontImp:public FbTk::FontImp {
+public:
+	explicit XftFontImp(const char *fontname=0);
+	~XftFontImp();
+	bool load(const std::string &name);
+	void drawText(Drawable w, int screen, GC gc, const char *text, size_t len, int x, int y) const;
+	unsigned int textWidth(const char *text, unsigned int len) const;
+	unsigned int height() const;
+private:
+	XftFont *m_xftfont;	
+};
+
+#endif // XFTFONTIMP_HH