+/* $Id: xfont.c,v 1.2 1999/11/05 08:00:49 brianp Exp $ */
+
/*
- * (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.
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999 Brian Paul All Rights Reserved.
+ *
+ * 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.
*
- * 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- * Unpublished-- rights reserved under the copyright laws of the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.
+ * 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
+ * BRIAN PAUL 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.
*/
+
+
/*
- * xfont.c
- * Draws some text in a bitmapped font. Uses glBitmap()
- * and other pixel routines. Also demonstrates use of
- * display lists.
+ * Example of using glXUseXFont().
+ * 5 November 1999
+ * Brian Paul
*/
+
+
#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 <stdlib.h>
#include <string.h>
-#include "glaux.h"
-GLuint base;
-void makeRasterFont(void)
+static const char *ProgramName = "xfont";
+
+static const char *FontName = "fixed";
+
+static GLuint FontBase = 0;
+
+
+
+static void redraw( Display *dpy, Window w )
+{
+ static const char *text = "This is glXUseXFont()";
+ printf("Redraw event\n");
+
+ glClear( GL_COLOR_BUFFER_BIT );
+
+ /* triangle */
+ glColor3f( 0.2, 0.2, 1.0 );
+ glBegin(GL_TRIANGLES);
+ glVertex2f( 0, 0.8 );
+ glVertex2f( -0.8, -0.7 );
+ glVertex2f( 0.8, -0.7 );
+ glEnd();
+
+ /* text */
+ glColor3f( 1, 1, 1 );
+ glRasterPos2f(-0.8, 0);
+ glListBase(FontBase);
+ glCallLists(strlen(text), GL_UNSIGNED_BYTE, (GLubyte *) text);
+
+ glXSwapBuffers( dpy, w );
+}
+
+
+
+static void resize( unsigned int width, unsigned int height )
+{
+ printf("Resize event\n");
+ glViewport( 0, 0, width, height );
+ glMatrixMode( GL_PROJECTION );
+ glLoadIdentity();
+ glOrtho( -1.0, 1.0, -1.0, 1.0, -1.0, 1.0 );
+}
+
+
+
+static void setup_font( Display *dpy )
{
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);
+
+ fontInfo = XLoadQueryFont(dpy, FontName);
+ if (!fontInfo) {
+ printf("Error: font %s not found\n", FontName);
+ 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);
+ FontBase = glGenLists((GLuint) last + 1);
+ if (!FontBase) {
+ printf("Error: unable to allocate display lists\n");
+ exit(0);
}
- glXUseXFont(id, first, last-first+1, base+first);
-/* *height = fontInfo->ascent + fontInfo->descent;
- *width = fontInfo->max_bounds.width; */
+ glXUseXFont(id, first, last - first + 1, FontBase + first);
}
-void printString(char *s)
+static Window make_rgb_db_window( Display *dpy, int xpos, int ypos,
+ unsigned int width, unsigned int height )
{
- glPushAttrib (GL_LIST_BIT);
- glListBase(base);
- glCallLists(strlen(s), GL_UNSIGNED_BYTE, (GLubyte *)s);
- glPopAttrib ();
-}
+ int attrib[] = { GLX_RGBA,
+ GLX_RED_SIZE, 1,
+ GLX_GREEN_SIZE, 1,
+ GLX_BLUE_SIZE, 1,
+ GLX_DOUBLEBUFFER,
+ None };
+ int scrnum;
+ XSetWindowAttributes attr;
+ unsigned long mask;
+ Window root;
+ Window win;
+ GLXContext ctx;
+ XVisualInfo *visinfo;
-void myinit (void)
-{
- makeRasterFont ();
- glShadeModel (GL_FLAT);
-}
+ scrnum = DefaultScreen( dpy );
+ root = RootWindow( dpy, scrnum );
-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 ();
+ visinfo = glXChooseVisual( dpy, scrnum, attrib );
+ if (!visinfo) {
+ printf("Error: couldn't get an RGB, Double-buffered visual\n");
+ exit(1);
+ }
+
+ /* window attributes */
+ attr.background_pixel = 0;
+ attr.border_pixel = 0;
+ attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone);
+ attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+ mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+ win = XCreateWindow( dpy, root, 0, 0, width, height,
+ 0, visinfo->depth, InputOutput,
+ visinfo->visual, mask, &attr );
+
+ {
+ XSizeHints sizehints;
+ sizehints.x = xpos;
+ sizehints.y = ypos;
+ sizehints.width = width;
+ sizehints.height = height;
+ sizehints.flags = USSize | USPosition;
+ XSetNormalHints(dpy, win, &sizehints);
+ XSetStandardProperties(dpy, win, ProgramName, ProgramName,
+ None, (char **)NULL, 0, &sizehints);
+ }
+
+
+ ctx = glXCreateContext( dpy, visinfo, NULL, True );
+
+ glXMakeCurrent( dpy, win, ctx );
+
+ return win;
}
-void myReshape(int w, int h)
+
+static void event_loop( Display *dpy )
{
- 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();
+ XEvent event;
+
+ while (1) {
+ XNextEvent( dpy, &event );
+
+ switch (event.type) {
+ case Expose:
+ redraw( dpy, event.xany.window );
+ break;
+ case ConfigureNotify:
+ resize( event.xconfigure.width, event.xconfigure.height );
+ break;
+ case KeyPress:
+ exit(0);
+ default:
+ ; /* no-op */
+ }
+ }
}
-/* Main Loop
- * Open window with initial window size, title bar,
- * RGBA display mode, and handle input events.
- */
-int main(int argc, char** argv)
+
+
+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;
-}
+ Display *dpy;
+ Window win;
+
+ dpy = XOpenDisplay(NULL);
+ win = make_rgb_db_window( dpy, 0, 0, 300, 300 );
+ setup_font( dpy );
+ glShadeModel( GL_FLAT );
+ glClearColor( 0.5, 0.5, 1.0, 1.0 );
+ XMapWindow( dpy, win );
+ event_loop( dpy );
+ return 0;
+}
projects / mesa.git / commitdiff