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added a direct Xlib implementation of font bitmap generation, disabled

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by default, this could be enabled by any users who prefer it, it uses
the standard X font "fixed" at 8 pixel size


git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/trunk@151 8a3a26a2-13c4-0310-b231-cf6edde360e5
This commit is contained in:
Forest Hale 2007-03-05 23:40:22 +00:00
parent 8048d70866
commit e5de74a41f
1 changed files with 79 additions and 1 deletions
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80
libs/gtkutil/glfont.cpp
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@ -20,8 +20,85 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/ */
#include "glfont.h" #include "glfont.h"
#include <GL/gl.h>
#include "debugging/debugging.h"
// LordHavoc: this is code for direct Xlib bitmap character fetching, as an
// alternative to requiring gtkglarea, it was created due to a lack of this
// package on SuSE 9.x but this package is now commonly shipping in Linux
// distributions so this code may be unnecessary, feel free however to enable
// it when building packages for distros that do not ship with that package,
// or if you just prefer less dependencies...
#if 0
#include <X11/Xlib.h>
#include <gdk/gdkx.h>
#include <GL/glx.h>
GLFont glfont_create(const char* font_string)
{
GLuint font_list_base;
XFontStruct *fontInfo;
Display *dpy = GDK_DISPLAY ();
unsigned int i, first, last, firstrow, lastrow;
int maxchars;
int firstbitmap;
fontInfo = XLoadQueryFont (dpy, "-*-fixed-*-*-*-*-8-*-*-*-*-*-*-*");
if (fontInfo == NULL)
{
// try to load other fonts
fontInfo = XLoadQueryFont (dpy, "-*-fixed-*-*-*-*-*-*-*-*-*-*-*-*");
// any font will do !
if (fontInfo == NULL)
fontInfo = XLoadQueryFont(dpy, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*");
if (fontInfo == NULL)
ERROR_MESSAGE("couldn't create font");
}
first = (int)fontInfo->min_char_or_byte2;
last = (int)fontInfo->max_char_or_byte2;
firstrow = (int)fontInfo->min_byte1;
lastrow = (int)fontInfo->max_byte1;
/*
* How many chars in the charset
*/
maxchars = 256 * lastrow + last;
font_list_base = glGenLists(maxchars+1);
if (font_list_base == 0)
{
ERROR_MESSAGE( "couldn't create font" );
}
/*
* Get offset to first char in the charset
*/
firstbitmap = 256 * firstrow + first;
/*
* for each row of chars, call glXUseXFont to build the bitmaps.
*/
for(i=firstrow; i<=lastrow; i++)
{
glXUseXFont(fontInfo->fid, firstbitmap, last-first+1, font_list_base+firstbitmap);
firstbitmap += 256;
}
/* *height = fontInfo->ascent + fontInfo->descent;
*width = fontInfo->max_bounds.width; */
return GLFont(font_list_base, fontInfo->ascent + fontInfo->descent);
}
void glfont_release(GLFont& font)
{
glDeleteLists(font.getDisplayList(), 256);
font = GLFont(0, 0);
}
#else
#include "igl.h"
#include <gtk/gtkglwidget.h> #include <gtk/gtkglwidget.h>
GLFont glfont_create(const char* font_string) GLFont glfont_create(const char* font_string)
@ -58,3 +135,4 @@ void glfont_release(GLFont& font)
glDeleteLists(font.getDisplayList(), 256); glDeleteLists(font.getDisplayList(), 256);
font = GLFont(0, 0); font = GLFont(0, 0);
} }
#endif