summaryrefslogtreecommitdiffstats
path: root/src/glut/glx/capturexfont.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/glut/glx/capturexfont.c')
-rw-r--r--src/glut/glx/capturexfont.c357
1 files changed, 0 insertions, 357 deletions
diff --git a/src/glut/glx/capturexfont.c b/src/glut/glx/capturexfont.c
deleted file mode 100644
index fd63fb7..0000000
--- a/src/glut/glx/capturexfont.c
+++ /dev/null
@@ -1,357 +0,0 @@
-
-/* Copyright (c) Mark J. Kilgard, 1994. */
-
-/* This program is freely distributable without licensing fees
- and is provided without guarantee or warrantee expressed or
- implied. This program is -not- in the public domain. */
-
-/* capturexfont.c connects to an X server and downloads a
- bitmap font from which a C source file is generated,
- encoding the font for GLUT's use. Example usage:
- capturexfont.c 9x15 glutBitmap9By15 > glut_9x15.c */
-
-#ifdef __VMS
-#include <GL/vms_x_fix.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <GL/gl.h>
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-
-#define MAX_GLYPHS_PER_GRAB 512 /* This is big enough for 2^9
- glyph character sets */
-
-static void
-outputChar(int num, int width, int height,
- int xoff, int yoff, int advance, int data)
-{
- if (width == 0 || height == 0) {
- printf("#ifdef _WIN32\n");
- printf("/* XXX Work around Microsoft OpenGL 1.1 bug where glBitmap with\n");
- printf(" a height or width of zero does not advance the raster position\n");
- printf(" as specified by OpenGL. (Cosmo OpenGL does not have this bug.) */\n");
- printf("static const GLubyte ch%ddata[] = { 0x0 };\n", num);
- printf("static const BitmapCharRec ch%d = {", num);
- printf("%d,", 0);
- printf("%d,", 0);
- printf("%d,", xoff);
- printf("%d,", yoff);
- printf("%d,", advance);
- printf("ch%ddata", num);
- printf("};\n");
- printf("#else\n");
- }
- printf("static const BitmapCharRec ch%d = {", num);
- printf("%d,", width);
- printf("%d,", height);
- printf("%d,", xoff);
- printf("%d,", yoff);
- printf("%d,", advance);
- if (data) {
- printf("ch%ddata", num);
- } else {
- printf("0");
- }
- printf("};\n");
- if (width == 0 || height == 0) {
- printf("#endif\n");
- }
- printf("\n");
-}
-
-/* Can't just use isprint because it only works for the range
- of ASCII characters (ie, TRUE for isascii) and capturexfont
- might be run on 16-bit fonts. */
-#define PRINTABLE(ch) (isascii(ch) ? isprint(ch) : 0)
-
-void
-captureXFont(Display * dpy, Font font, char *xfont, char *name)
-{
- int first, last, count;
- int cnt, len;
- Pixmap offscreen;
- Window drawable;
- XFontStruct *fontinfo;
- XImage *image;
- GC xgc;
- XGCValues values;
- int width, height;
- int i, j, k;
- XCharStruct *charinfo;
- XChar2b character;
- GLubyte *bitmapData;
- int x, y;
- int spanLength;
- int charWidth, charHeight, maxSpanLength, pixwidth;
- int grabList[MAX_GLYPHS_PER_GRAB];
- int glyphsPerGrab = MAX_GLYPHS_PER_GRAB;
- int numToGrab;
- int rows, pages, byte1, byte2, index;
- int nullBitmap;
-
- drawable = RootWindow(dpy, DefaultScreen(dpy));
-
- fontinfo = XQueryFont(dpy, font);
- pages = fontinfo->max_char_or_byte2 - fontinfo->min_char_or_byte2 + 1;
- first = (fontinfo->min_byte1 << 8) + fontinfo->min_char_or_byte2;
- last = (fontinfo->max_byte1 << 8) + fontinfo->max_char_or_byte2;
- count = last - first + 1;
-
- width = fontinfo->max_bounds.rbearing -
- fontinfo->min_bounds.lbearing;
- height = fontinfo->max_bounds.ascent +
- fontinfo->max_bounds.descent;
- /* 16-bit fonts have more than one row; indexing into
- per_char is trickier. */
- rows = fontinfo->max_byte1 - fontinfo->min_byte1 + 1;
-
- maxSpanLength = (width + 7) / 8;
- /* For portability reasons we don't use alloca for
- bitmapData, but we could. */
- bitmapData = malloc(height * maxSpanLength);
- /* Be careful determining the width of the pixmap; the X
- protocol allows pixmaps of width 2^16-1 (unsigned short
- size) but drawing coordinates max out at 2^15-1 (signed
- short size). If the width is too large, we need to limit
- the glyphs per grab. */
- if ((glyphsPerGrab * 8 * maxSpanLength) >= (1 << 15)) {
- glyphsPerGrab = (1 << 15) / (8 * maxSpanLength);
- }
- pixwidth = glyphsPerGrab * 8 * maxSpanLength;
- offscreen = XCreatePixmap(dpy, drawable, pixwidth, height, 1);
-
- values.font = font;
- values.background = 0;
- values.foreground = 0;
- xgc = XCreateGC(dpy, offscreen,
- GCFont | GCBackground | GCForeground, &values);
- XFillRectangle(dpy, offscreen, xgc, 0, 0,
- 8 * maxSpanLength * glyphsPerGrab, height);
- XSetForeground(dpy, xgc, 1);
-
- numToGrab = 0;
- if (fontinfo->per_char == NULL) {
- charinfo = &(fontinfo->min_bounds);
- charWidth = charinfo->rbearing - charinfo->lbearing;
- charHeight = charinfo->ascent + charinfo->descent;
- spanLength = (charWidth + 7) / 8;
- }
- printf("\n/* GENERATED FILE -- DO NOT MODIFY */\n\n");
- printf("#include \"glutbitmap.h\"\n\n");
- for (i = first; count; i++, count--) {
- int undefined;
- if (rows == 1) {
- undefined = (fontinfo->min_char_or_byte2 > i ||
- fontinfo->max_char_or_byte2 < i);
- } else {
- byte2 = i & 0xff;
- byte1 = i >> 8;
- undefined = (fontinfo->min_char_or_byte2 > byte2 ||
- fontinfo->max_char_or_byte2 < byte2 ||
- fontinfo->min_byte1 > byte1 ||
- fontinfo->max_byte1 < byte1);
-
- }
- if (undefined) {
- goto PossiblyDoGrab;
- }
- if (fontinfo->per_char != NULL) {
- if (rows == 1) {
- index = i - fontinfo->min_char_or_byte2;
- } else {
- byte2 = i & 0xff;
- byte1 = i >> 8;
- index =
- (byte1 - fontinfo->min_byte1) * pages +
- (byte2 - fontinfo->min_char_or_byte2);
- }
- charinfo = &(fontinfo->per_char[index]);
- charWidth = charinfo->rbearing - charinfo->lbearing;
- charHeight = charinfo->ascent + charinfo->descent;
- if (charWidth == 0 || charHeight == 0) {
- if (charinfo->width != 0) {
- /* Still must move raster pos even if empty character
-
- */
- outputChar(i, 0, 0, 0, 0, charinfo->width, 0);
- }
- goto PossiblyDoGrab;
- }
- }
- grabList[numToGrab] = i;
- character.byte2 = i & 255;
- character.byte1 = i >> 8;
-
- /* XXX We could use XDrawImageString16 which would also
- paint the backing rectangle but X server bugs in some
- scalable font rasterizers makes it more effective to do
- XFillRectangles to clear the pixmap and then
- XDrawImage16 for the text. */
- XDrawString16(dpy, offscreen, xgc,
- -charinfo->lbearing + 8 * maxSpanLength * numToGrab,
- charinfo->ascent, &character, 1);
-
- numToGrab++;
-
- PossiblyDoGrab:
-
- if (numToGrab >= glyphsPerGrab || count == 1) {
- image = XGetImage(dpy, offscreen,
- 0, 0, pixwidth, height, 1, XYPixmap);
- for (j = numToGrab - 1; j >= 0; j--) {
- if (fontinfo->per_char != NULL) {
- byte2 = grabList[j] & 0xff;
- byte1 = grabList[j] >> 8;
- index =
- (byte1 - fontinfo->min_byte1) * pages +
- (byte2 - fontinfo->min_char_or_byte2);
- charinfo = &(fontinfo->per_char[index]);
- charWidth = charinfo->rbearing - charinfo->lbearing;
- charHeight = charinfo->ascent + charinfo->descent;
- spanLength = (charWidth + 7) / 8;
- }
- memset(bitmapData, 0, height * spanLength);
- for (y = 0; y < charHeight; y++) {
- for (x = 0; x < charWidth; x++) {
- if (XGetPixel(image, j * maxSpanLength * 8 + x,
- charHeight - 1 - y)) {
- /* Little endian machines (such as DEC Alpha)
- could benefit from reversing the bit order
- here and changing the GL_UNPACK_LSB_FIRST
- parameter in glutBitmapCharacter to GL_TRUE. */
- bitmapData[y * spanLength + x / 8] |=
- (1 << (7 - (x & 7)));
- }
- }
- }
- if (PRINTABLE(grabList[j])) {
- printf("/* char: 0x%x '%c' */\n\n",
- grabList[j], grabList[j]);
- } else {
- printf("/* char: 0x%x */\n\n", grabList[j]);
- }
-
- /* Determine if the bitmap is null. */
- nullBitmap = 1;
- len = (charinfo->ascent + charinfo->descent) *
- ((charinfo->rbearing - charinfo->lbearing + 7) / 8);
- cnt = 0;
- while (cnt < len) {
- for (k = 0; k < 16 && cnt < len; k++, cnt++) {
- if (bitmapData[cnt] != 0) {
- nullBitmap = 0;
- }
- }
- }
-
- if (!nullBitmap) {
- printf("static const GLubyte ch%ddata[] = {\n", grabList[j]);
- len = (charinfo->ascent + charinfo->descent) *
- ((charinfo->rbearing - charinfo->lbearing + 7) / 8);
- cnt = 0;
- while (cnt < len) {
- for (k = 0; k < 16 && cnt < len; k++, cnt++) {
- printf("0x%x,", bitmapData[cnt]);
- }
- printf("\n");
- }
- printf("};\n\n");
- } else {
- charWidth = 0;
- charHeight = 0;
- }
-
- outputChar(grabList[j], charWidth, charHeight,
- -charinfo->lbearing, charinfo->descent,
- charinfo->width, !nullBitmap);
- }
- XDestroyImage(image);
- numToGrab = 0;
- if (count > 0) {
- XSetForeground(dpy, xgc, 0);
- XFillRectangle(dpy, offscreen, xgc, 0, 0,
- 8 * maxSpanLength * glyphsPerGrab, height);
- XSetForeground(dpy, xgc, 1);
- }
- }
- }
- XFreeGC(dpy, xgc);
- XFreePixmap(dpy, offscreen);
- /* For portability reasons we don't use alloca for
- bitmapData, but we could. */
- free(bitmapData);
-
- printf("static const BitmapCharRec * const chars[] = {\n");
- for (i = first; i <= last; i++) {
- int undefined;
- byte2 = i & 0xff;
- byte1 = i >> 8;
- undefined = (fontinfo->min_char_or_byte2 > byte2 ||
- fontinfo->max_char_or_byte2 < byte2 ||
- fontinfo->min_byte1 > byte1 ||
- fontinfo->max_byte1 < byte1);
- if (undefined) {
- printf("0,\n");
- } else {
- if (fontinfo->per_char != NULL) {
- if (rows == 1) {
- index = i - fontinfo->min_char_or_byte2;
- } else {
- byte2 = i & 0xff;
- byte1 = i >> 8;
- index =
- (byte1 - fontinfo->min_byte1) * pages +
- (byte2 - fontinfo->min_char_or_byte2);
- }
- charinfo = &(fontinfo->per_char[index]);
- charWidth = charinfo->rbearing - charinfo->lbearing;
- charHeight = charinfo->ascent + charinfo->descent;
- if (charWidth == 0 || charHeight == 0) {
- if (charinfo->width == 0) {
- printf("0,\n");
- continue;
- }
- }
- }
- printf("&ch%d,\n", i);
- }
- }
- printf("};\n\n");
- printf("GLUTAPI const BitmapFontRec %s;\n", name);
- printf("const BitmapFontRec %s = {\n", name);
- printf("\"%s\",\n", xfont);
- printf("%d,\n", last - first + 1);
- printf("%d,\n", first);
- printf("chars\n");
- printf("};\n\n");
- XFreeFont(dpy, fontinfo);
-}
-
-int
-main(int argc, char **argv)
-{
- Display *dpy;
- Font font;
-
- if (argc != 3) {
- fprintf(stderr, "usage: capturexfont XFONT NAME\n");
- exit(1);
- }
- dpy = XOpenDisplay(NULL);
- if (dpy == NULL) {
- fprintf(stderr, "capturexfont: could not open X display\n");
- exit(1);
- }
- font = XLoadFont(dpy, argv[1]);
- if (font == None) {
- fprintf(stderr, "capturexfont: bad font\n");
- exit(1);
- }
- captureXFont(dpy, font, argv[1], argv[2]);
- XCloseDisplay(dpy);
- return 0;
-}
generated by cgit v1.1 at 2024-10-30 09:43:52 +0000