diff options
| -rw-r--r-- | src/glx/x11/xfont.c | 423 |
1 files changed, 212 insertions, 211 deletions
diff --git a/src/glx/x11/xfont.c b/src/glx/x11/xfont.c index 886fb8efd0..8e46063a32 100644 --- a/src/glx/x11/xfont.c +++ b/src/glx/x11/xfont.c @@ -49,59 +49,56 @@ int debug_xfonts = 0; static void -dump_char_struct (XCharStruct *ch, char *prefix) +dump_char_struct(XCharStruct * ch, char *prefix) { - printf ("%slbearing = %d, rbearing = %d, width = %d\n", + printf("%slbearing = %d, rbearing = %d, width = %d\n", prefix, ch->lbearing, ch->rbearing, ch->width); - printf ("%sascent = %d, descent = %d, attributes = %u\n", + printf("%sascent = %d, descent = %d, attributes = %u\n", prefix, ch->ascent, ch->descent, (unsigned int) ch->attributes); } static void -dump_font_struct (XFontStruct *font) +dump_font_struct(XFontStruct * font) { - printf ("ascent = %d, descent = %d\n", font->ascent, font->descent); - printf ("char_or_byte2 = (%u,%u)\n", + printf("ascent = %d, descent = %d\n", font->ascent, font->descent); + printf("char_or_byte2 = (%u,%u)\n", font->min_char_or_byte2, font->max_char_or_byte2); - printf ("byte1 = (%u,%u)\n", font->min_byte1, font->max_byte1); - printf ("all_chars_exist = %s\n", font->all_chars_exist ? "True" : -"False"); - printf ("default_char = %c (\\%03o)\n", - (char) (isprint (font->default_char) ? font->default_char : ' '), + printf("byte1 = (%u,%u)\n", font->min_byte1, font->max_byte1); + printf("all_chars_exist = %s\n", font->all_chars_exist ? "True" : "False"); + printf("default_char = %c (\\%03o)\n", + (char) (isprint(font->default_char) ? font->default_char : ' '), font->default_char); - dump_char_struct (&font->min_bounds, "min> "); - dump_char_struct (&font->max_bounds, "max> "); + dump_char_struct(&font->min_bounds, "min> "); + dump_char_struct(&font->max_bounds, "max> "); #if 0 - for (c = font->min_char_or_byte2; c <= font->max_char_or_byte2; c++) - { + for (c = font->min_char_or_byte2; c <= font->max_char_or_byte2; c++) { char prefix[8]; - sprintf (prefix, "%d> ", c); - dump_char_struct (&font->per_char[c], prefix); - } + sprintf(prefix, "%d> ", c); + dump_char_struct(&font->per_char[c], prefix); + } #endif } static void -dump_bitmap (unsigned int width, unsigned int height, GLubyte *bitmap) +dump_bitmap(unsigned int width, unsigned int height, GLubyte * bitmap) { - unsigned int x, y; - - printf (" "); - for (x = 0; x < 8*width; x++) - printf ("%o", 7 - (x % 8)); - putchar ('\n'); - for (y = 0; y < height; y++) - { - printf ("%3o:", y); - for (x = 0; x < 8*width; x++) - putchar ((bitmap[width*(height - y - 1) + x/8] & (1 << (7 - (x % -8)))) + unsigned int x, y; + + printf(" "); + for (x = 0; x < 8 * width; x++) + printf("%o", 7 - (x % 8)); + putchar('\n'); + for (y = 0; y < height; y++) { + printf("%3o:", y); + for (x = 0; x < 8 * width; x++) + putchar((bitmap[width * (height - y - 1) + x / 8] & (1 << (7 - (x % + 8)))) ? '*' : '.'); - printf (" "); + printf(" "); for (x = 0; x < width; x++) - printf ("0x%02x, ", bitmap[width*(height - y - 1) + x]); - putchar ('\n'); - } + printf("0x%02x, ", bitmap[width * (height - y - 1) + x]); + putchar('\n'); + } } #endif /* DEBUG */ @@ -133,169 +130,172 @@ dump_bitmap (unsigned int width, unsigned int height, GLubyte *bitmap) * Generate OpenGL-compatible bitmap. */ static void -fill_bitmap (Display *dpy, Window win, GC gc, - unsigned int width, unsigned int height, - int x0, int y0, unsigned int c, GLubyte *bitmap) +fill_bitmap(Display * dpy, Window win, GC gc, + unsigned int width, unsigned int height, + int x0, int y0, unsigned int c, GLubyte * bitmap) { - XImage *image; - unsigned int x, y; - Pixmap pixmap; - XChar2b char2b; - - pixmap = XCreatePixmap (dpy, win, 8*width, height, 1); - XSetForeground(dpy, gc, 0); - XFillRectangle (dpy, pixmap, gc, 0, 0, 8*width, height); - XSetForeground(dpy, gc, 1); - - char2b.byte1 = (c >> 8) & 0xff; - char2b.byte2 = (c & 0xff); - - XDrawString16 (dpy, pixmap, gc, x0, y0, &char2b, 1); - - image = XGetImage (dpy, pixmap, 0, 0, 8*width, height, 1, XYPixmap); - if (image) { - /* Fill the bitmap (X11 and OpenGL are upside down wrt each other). */ - for (y = 0; y < height; y++) - for (x = 0; x < 8*width; x++) - if (XGetPixel (image, x, y)) - bitmap[width*(height - y - 1) + x/8] |= (1 << (7 - (x % 8))); - XDestroyImage (image); - } - - XFreePixmap (dpy, pixmap); + XImage *image; + unsigned int x, y; + Pixmap pixmap; + XChar2b char2b; + + pixmap = XCreatePixmap(dpy, win, 8 * width, height, 1); + XSetForeground(dpy, gc, 0); + XFillRectangle(dpy, pixmap, gc, 0, 0, 8 * width, height); + XSetForeground(dpy, gc, 1); + + char2b.byte1 = (c >> 8) & 0xff; + char2b.byte2 = (c & 0xff); + + XDrawString16(dpy, pixmap, gc, x0, y0, &char2b, 1); + + image = XGetImage(dpy, pixmap, 0, 0, 8 * width, height, 1, XYPixmap); + if (image) { + /* Fill the bitmap (X11 and OpenGL are upside down wrt each other). */ + for (y = 0; y < height; y++) + for (x = 0; x < 8 * width; x++) + if (XGetPixel(image, x, y)) + bitmap[width * (height - y - 1) + x / 8] |= + (1 << (7 - (x % 8))); + XDestroyImage(image); + } + + XFreePixmap(dpy, pixmap); } /* * determine if a given glyph is valid and return the * corresponding XCharStruct. */ -static XCharStruct *isvalid(XFontStruct *fs, int which) +static XCharStruct * +isvalid(XFontStruct * fs, int which) { - unsigned int rows,pages; - int byte1 = 0, byte2 = 0; - int i,valid = 1; - - rows = fs->max_byte1 - fs->min_byte1 + 1; - pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1; - - if (rows == 1) { - /* "linear" fonts */ - if ((fs->min_char_or_byte2 > which) || - (fs->max_char_or_byte2 < which)) valid = 0; - } else { - /* "matrix" fonts */ - byte2 = which & 0xff; - byte1 = which >> 8; - if ((fs->min_char_or_byte2 > byte2) || - (fs->max_char_or_byte2 < byte2) || - (fs->min_byte1 > byte1) || - (fs->max_byte1 < byte1)) valid = 0; - } - - if (valid) { - if (fs->per_char) { - if (rows == 1) { - /* "linear" fonts */ - return(fs->per_char + (which-fs->min_char_or_byte2) ); - } else { - /* "matrix" fonts */ - i = ((byte1 - fs->min_byte1) * pages) + - (byte2 - fs->min_char_or_byte2); - return(fs->per_char + i); + unsigned int rows, pages; + int byte1 = 0, byte2 = 0; + int i, valid = 1; + + rows = fs->max_byte1 - fs->min_byte1 + 1; + pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1; + + if (rows == 1) { + /* "linear" fonts */ + if ((fs->min_char_or_byte2 > which) || (fs->max_char_or_byte2 < which)) + valid = 0; + } + else { + /* "matrix" fonts */ + byte2 = which & 0xff; + byte1 = which >> 8; + if ((fs->min_char_or_byte2 > byte2) || + (fs->max_char_or_byte2 < byte2) || + (fs->min_byte1 > byte1) || (fs->max_byte1 < byte1)) + valid = 0; + } + + if (valid) { + if (fs->per_char) { + if (rows == 1) { + /* "linear" fonts */ + return (fs->per_char + (which - fs->min_char_or_byte2)); + } + else { + /* "matrix" fonts */ + i = ((byte1 - fs->min_byte1) * pages) + + (byte2 - fs->min_char_or_byte2); + return (fs->per_char + i); + } } - } else { - return(&fs->min_bounds); - } - } - return(NULL); + else { + return (&fs->min_bounds); + } + } + return (NULL); } -_X_HIDDEN void DRI_glXUseXFont( Font font, int first, int count, int listbase ) +_X_HIDDEN void +DRI_glXUseXFont(Font font, int first, int count, int listbase) { - GLXContext CC; - Display *dpy; - Window win; - Pixmap pixmap; - GC gc; - XGCValues values; - unsigned long valuemask; - XFontStruct *fs; - - GLint swapbytes, lsbfirst, rowlength; - GLint skiprows, skippixels, alignment; - - unsigned int max_width, max_height, max_bm_width, max_bm_height; - GLubyte *bm; - - int i; - - CC = __glXGetCurrentContext(); - dpy = CC->currentDpy; - win = CC->currentDrawable; - - fs = XQueryFont (dpy, font); - if (!fs) - { + GLXContext CC; + Display *dpy; + Window win; + Pixmap pixmap; + GC gc; + XGCValues values; + unsigned long valuemask; + XFontStruct *fs; + + GLint swapbytes, lsbfirst, rowlength; + GLint skiprows, skippixels, alignment; + + unsigned int max_width, max_height, max_bm_width, max_bm_height; + GLubyte *bm; + + int i; + + CC = __glXGetCurrentContext(); + dpy = CC->currentDpy; + win = CC->currentDrawable; + + fs = XQueryFont(dpy, font); + if (!fs) { __glXSetError(CC, GL_INVALID_VALUE); return; - } - - /* Allocate a bitmap that can fit all characters. */ - max_width = fs->max_bounds.rbearing - fs->min_bounds.lbearing; - max_height = fs->max_bounds.ascent + fs->max_bounds.descent; - max_bm_width = (max_width + 7) / 8; - max_bm_height = max_height; - - bm = (GLubyte *) Xmalloc((max_bm_width * max_bm_height) * sizeof -(GLubyte)); - if (!bm) { - XFreeFontInfo( NULL, fs, 1 ); + } + + /* Allocate a bitmap that can fit all characters. */ + max_width = fs->max_bounds.rbearing - fs->min_bounds.lbearing; + max_height = fs->max_bounds.ascent + fs->max_bounds.descent; + max_bm_width = (max_width + 7) / 8; + max_bm_height = max_height; + + bm = (GLubyte *) Xmalloc((max_bm_width * max_bm_height) * sizeof(GLubyte)); + if (!bm) { + XFreeFontInfo(NULL, fs, 1); __glXSetError(CC, GL_OUT_OF_MEMORY); return; - } + } #if 0 - /* get the page info */ - pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1; - firstchar = (fs->min_byte1 << 8) + fs->min_char_or_byte2; - lastchar = (fs->max_byte1 << 8) + fs->max_char_or_byte2; - rows = fs->max_byte1 - fs->min_byte1 + 1; - unsigned int first_char, last_char, pages, rows; + /* get the page info */ + pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1; + firstchar = (fs->min_byte1 << 8) + fs->min_char_or_byte2; + lastchar = (fs->max_byte1 << 8) + fs->max_char_or_byte2; + rows = fs->max_byte1 - fs->min_byte1 + 1; + unsigned int first_char, last_char, pages, rows; #endif - /* Save the current packing mode for bitmaps. */ - glGetIntegerv (GL_UNPACK_SWAP_BYTES, &swapbytes); - glGetIntegerv (GL_UNPACK_LSB_FIRST, &lsbfirst); - glGetIntegerv (GL_UNPACK_ROW_LENGTH, &rowlength); - glGetIntegerv (GL_UNPACK_SKIP_ROWS, &skiprows); - glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &skippixels); - glGetIntegerv (GL_UNPACK_ALIGNMENT, &alignment); - - /* Enforce a standard packing mode which is compatible with - fill_bitmap() from above. This is actually the default mode, - except for the (non)alignment. */ - glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE); - glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE); - glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); - glPixelStorei (GL_UNPACK_SKIP_ROWS, 0); - glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0); - glPixelStorei (GL_UNPACK_ALIGNMENT, 1); - - pixmap = XCreatePixmap (dpy, win, 10, 10, 1); - values.foreground = BlackPixel (dpy, DefaultScreen (dpy)); - values.background = WhitePixel (dpy, DefaultScreen (dpy)); - values.font = fs->fid; - valuemask = GCForeground | GCBackground | GCFont; - gc = XCreateGC (dpy, pixmap, valuemask, &values); - XFreePixmap (dpy, pixmap); + /* Save the current packing mode for bitmaps. */ + glGetIntegerv(GL_UNPACK_SWAP_BYTES, &swapbytes); + glGetIntegerv(GL_UNPACK_LSB_FIRST, &lsbfirst); + glGetIntegerv(GL_UNPACK_ROW_LENGTH, &rowlength); + glGetIntegerv(GL_UNPACK_SKIP_ROWS, &skiprows); + glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &skippixels); + glGetIntegerv(GL_UNPACK_ALIGNMENT, &alignment); + + /* Enforce a standard packing mode which is compatible with + fill_bitmap() from above. This is actually the default mode, + except for the (non)alignment. */ + glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE); + glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE); + glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); + glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); + glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + + pixmap = XCreatePixmap(dpy, win, 10, 10, 1); + values.foreground = BlackPixel(dpy, DefaultScreen(dpy)); + values.background = WhitePixel(dpy, DefaultScreen(dpy)); + values.font = fs->fid; + valuemask = GCForeground | GCBackground | GCFont; + gc = XCreateGC(dpy, pixmap, valuemask, &values); + XFreePixmap(dpy, pixmap); #ifdef DEBUG - if (debug_xfonts) - dump_font_struct (fs); + if (debug_xfonts) + dump_font_struct(fs); #endif - for (i = 0; i < count; i++) - { + for (i = 0; i < count; i++) { unsigned int width, height, bm_width, bm_height; GLfloat x0, y0, dx, dy; XCharStruct *ch; @@ -307,17 +307,18 @@ _X_HIDDEN void DRI_glXUseXFont( Font font, int first, int count, int listbase ) /* check on index validity and get the bounds */ ch = isvalid(fs, c); if (!ch) { - ch = &fs->max_bounds; - valid = 0; - } else { - valid = 1; + ch = &fs->max_bounds; + valid = 0; + } + else { + valid = 1; } #ifdef DEBUG if (debug_xfonts) { - char s[7]; - sprintf (s, isprint (c) ? "%c> " : "\\%03o> ", c); - dump_char_struct (ch, s); + char s[7]; + sprintf(s, isprint(c) ? "%c> " : "\\%03o> ", c); + dump_char_struct(ch, s); } #endif @@ -325,13 +326,13 @@ _X_HIDDEN void DRI_glXUseXFont( Font font, int first, int count, int listbase ) straight from the glXUseXFont(3) manpage. */ width = ch->rbearing - ch->lbearing; height = ch->ascent + ch->descent; - x0 = - ch->lbearing; + x0 = -ch->lbearing; y0 = ch->descent - 1; dx = ch->width; dy = 0; /* X11's starting point. */ - x = - ch->lbearing; + x = -ch->lbearing; y = ch->ascent; /* Round the width to a multiple of eight. We will use this also @@ -340,38 +341,38 @@ _X_HIDDEN void DRI_glXUseXFont( Font font, int first, int count, int listbase ) bm_width = (width + 7) / 8; bm_height = height; - glNewList (list, GL_COMPILE); - if (valid && (bm_width > 0) && (bm_height > 0)) { + glNewList(list, GL_COMPILE); + if (valid && (bm_width > 0) && (bm_height > 0)) { - memset (bm, '\0', bm_width * bm_height); - fill_bitmap (dpy, win, gc, bm_width, bm_height, x, y, c, bm); + memset(bm, '\0', bm_width * bm_height); + fill_bitmap(dpy, win, gc, bm_width, bm_height, x, y, c, bm); - glBitmap (width, height, x0, y0, dx, dy, bm); + glBitmap(width, height, x0, y0, dx, dy, bm); #ifdef DEBUG - if (debug_xfonts) { - printf ("width/height = %u/%u\n", width, height); - printf ("bm_width/bm_height = %u/%u\n", bm_width, -bm_height); - dump_bitmap (bm_width, bm_height, bm); - } + if (debug_xfonts) { + printf("width/height = %u/%u\n", width, height); + printf("bm_width/bm_height = %u/%u\n", bm_width, bm_height); + dump_bitmap(bm_width, bm_height, bm); + } #endif - } else { - glBitmap (0, 0, 0.0, 0.0, dx, dy, NULL); - } - glEndList (); - } - - Xfree(bm); - XFreeFontInfo( NULL, fs, 1 ); - XFreeGC (dpy, gc); - - /* Restore saved packing modes. */ - glPixelStorei(GL_UNPACK_SWAP_BYTES, swapbytes); - glPixelStorei(GL_UNPACK_LSB_FIRST, lsbfirst); - glPixelStorei(GL_UNPACK_ROW_LENGTH, rowlength); - glPixelStorei(GL_UNPACK_SKIP_ROWS, skiprows); - glPixelStorei(GL_UNPACK_SKIP_PIXELS, skippixels); - glPixelStorei(GL_UNPACK_ALIGNMENT, alignment); + } + else { + glBitmap(0, 0, 0.0, 0.0, dx, dy, NULL); + } + glEndList(); + } + + Xfree(bm); + XFreeFontInfo(NULL, fs, 1); + XFreeGC(dpy, gc); + + /* Restore saved packing modes. */ + glPixelStorei(GL_UNPACK_SWAP_BYTES, swapbytes); + glPixelStorei(GL_UNPACK_LSB_FIRST, lsbfirst); + glPixelStorei(GL_UNPACK_ROW_LENGTH, rowlength); + glPixelStorei(GL_UNPACK_SKIP_ROWS, skiprows); + glPixelStorei(GL_UNPACK_SKIP_PIXELS, skippixels); + glPixelStorei(GL_UNPACK_ALIGNMENT, alignment); } #endif |