Initial revision

1 files changed, 148 insertions, 0 deletions

diff --git a/progs/xdemos/xfont.c b/progs/xdemos/xfont.c
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+/*
+ * (c) Copyright 1993, Silicon Graphics, Inc.
+ * ALL RIGHTS RESERVED 
+ * Permission to use, copy, modify, and distribute this software for 
+ * any purpose and without fee is hereby granted, provided that the above
+ * copyright notice appear in all copies and that both the copyright notice
+ * and this permission notice appear in supporting documentation, and that 
+ * the name of Silicon Graphics, Inc. not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission. 
+ *
+ * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
+ * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
+ * FITNESS FOR A PARTICULAR PURPOSE.  IN NO EVENT SHALL SILICON
+ * GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
+ * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
+ * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
+ * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
+ * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC.  HAS BEEN
+ * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
+ * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
+ * 
+ * US Government Users Restricted Rights 
+ * Use, duplication, or disclosure by the Government is subject to
+ * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+ * (c)(1)(ii) of the Rights in Technical Data and Computer Software
+ * clause at DFARS 252.227-7013 and/or in similar or successor
+ * clauses in the FAR or the DOD or NASA FAR Supplement.
+ * Unpublished-- rights reserved under the copyright laws of the
+ * United States.  Contractor/manufacturer is Silicon Graphics,
+ * Inc., 2011 N.  Shoreline Blvd., Mountain View, CA 94039-7311.
+ *
+ * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
+ */
+/*
+ *  xfont.c
+ *  Draws some text in a bitmapped font.  Uses glBitmap() 
+ *  and other pixel routines.  Also demonstrates use of 
+ *  display lists.
+ */
+#include <GL/gl.h>
+#include <GL/glu.h>
+#include <GL/glx.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "glaux.h"
+
+GLuint base;
+
+void makeRasterFont(void)
+{
+    XFontStruct *fontInfo;
+    Font id;
+    unsigned int first, last;
+    Display *xdisplay;
+
+    xdisplay = auxXDisplay ();
+    fontInfo = XLoadQueryFont(xdisplay, 
+	"-adobe-helvetica-medium-r-normal--17-120-100-100-p-88-iso8859-1");
+    if (fontInfo == NULL) {
+        printf ("no font found\n");
+	exit (0);
+    }
+
+    id = fontInfo->fid;
+    first = fontInfo->min_char_or_byte2;
+    last = fontInfo->max_char_or_byte2;
+
+    base = glGenLists((GLuint) last+1);
+    if (base == 0) {
+        printf ("out of display lists\n");
+	exit (0);
+    }
+    glXUseXFont(id, first, last-first+1, base+first);
+/*    *height = fontInfo->ascent + fontInfo->descent;
+    *width = fontInfo->max_bounds.width;  */
+}
+
+void printString(char *s)
+{
+    glPushAttrib (GL_LIST_BIT);
+    glListBase(base);
+    glCallLists(strlen(s), GL_UNSIGNED_BYTE, (GLubyte *)s);
+    glPopAttrib ();
+}
+
+void myinit (void) 
+{
+    makeRasterFont ();
+    glShadeModel (GL_FLAT);    
+}
+
+void display(void)
+{
+    GLfloat white[3] = { 1.0, 1.0, 1.0 };
+    int i, j;
+    char teststring[33];
+
+    glClear(GL_COLOR_BUFFER_BIT);
+    glColor3fv(white);
+    for (i = 32; i < 127; i += 32) {
+	glRasterPos2i(20, 200 - 18*(GLint) i/32);
+	for (j = 0; j < 32; j++)
+	    teststring[j] = (char) (i+j);
+	teststring[32] = 0;
+	printString(teststring);
+    }
+    glRasterPos2i(20, 100);
+    printString("The quick brown fox jumps");
+    glRasterPos2i(20, 82);
+    printString("over a lazy dog.");
+    glFlush ();
+}
+
+void myReshape(int w, int h)
+{
+    glViewport(0, 0, w, h);
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho (0.0, (GLfloat) w, 0.0, (GLfloat) h, -1.0, 1.0);
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+}
+
+/*  Main Loop
+ *  Open window with initial window size, title bar, 
+ *  RGBA display mode, and handle input events.
+ */
+int main(int argc, char** argv)
+{
+    auxInitDisplayMode (AUX_SINGLE | AUX_RGB);
+    auxInitPosition (0, 0, 500, 500);
+    if (!auxInitWindow (argv[0]))
+       auxQuit();
+    auxReshapeFunc (myReshape);
+    myinit ();
+    auxMainLoop(display);
+    return 0;
+}
+
+
+
+