diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.2/src/glut/glx/capturexfont.c')
| -rw-r--r-- | nx-X11/extras/Mesa_6.4.2/src/glut/glx/capturexfont.c | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.2/src/glut/glx/capturexfont.c b/nx-X11/extras/Mesa_6.4.2/src/glut/glx/capturexfont.c new file mode 100644 index 000000000..b99e79305 --- /dev/null +++ b/nx-X11/extras/Mesa_6.4.2/src/glut/glx/capturexfont.c @@ -0,0 +1,356 @@ + +/* 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("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; +} |