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-rw-r--r--src/Speedo/spglyph.c403
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diff --git a/src/Speedo/spglyph.c b/src/Speedo/spglyph.c
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+/* $Xorg: spglyph.c,v 1.4 2001/02/09 02:04:00 xorgcvs Exp $ */
+/*
+ * Copyright 1990, 1991 Network Computing Devices;
+ * Portions Copyright 1987 by Digital Equipment Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the names of Network Computing Devices or Digital
+ * not be used in advertising or publicity pertaining to distribution of
+ * the software without specific, written prior permission.
+ *
+ * NETWORK COMPUTING DEVICES AND DIGITAL DISCLAIM ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL NETWORK COMPUTING DEVICES OR DIGITAL BE
+ * LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Dave Lemke, Network Computing Devices Inc
+ */
+
+/*
+
+Copyright 1987, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+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 THE OPEN GROUP 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.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+#include <X11/X.h> /* for bit order #defines */
+#include "spint.h"
+
+#undef CLIP_BBOX_NOISE
+
+static CurrentFontValuesRec current_font_values;
+static CurrentFontValuesPtr cfv = &current_font_values;
+static int bit_order,
+ byte_order,
+ scan;
+
+unsigned long
+sp_compute_data_size(pfont, mappad, scanlinepad, start, end)
+ FontPtr pfont;
+ int mappad,
+ scanlinepad;
+ unsigned long start,
+ end;
+{
+ unsigned long ch;
+ unsigned long size = 0;
+ int bpr;
+ SpeedoFontPtr spf = (SpeedoFontPtr) pfont->fontPrivate;
+ FontInfoPtr pinfo = &pfont->info;
+ int firstChar;
+
+ firstChar = spf->master->first_char_id;
+
+ /* allocate the space */
+ switch (mappad) {
+ int charsize;
+ CharInfoPtr ci;
+ xCharInfo *cim;
+
+ case BitmapFormatImageRectMin:
+ cfv->bpr = 0;
+ for (ch = start; ch <= end; ch++) {
+ ci = &spf->encoding[ch - firstChar];
+ if (!ci)
+ ci = spf->pDefault;
+ cim = &ci->metrics;
+ charsize = GLYPH_SIZE(ci, scanlinepad);
+ charsize *= cim->ascent + cim->descent;
+ size += charsize;
+ }
+ break;
+ case BitmapFormatImageRectMaxWidth:
+ bpr = GLWIDTHBYTESPADDED(FONT_MAX_WIDTH(pinfo), scanlinepad);
+ cfv->bpr = bpr;
+ for (ch = start; ch <= end; ch++) {
+ ci = &spf->encoding[ch - firstChar];
+ if (!ci)
+ ci = spf->pDefault;
+ cim = &ci->metrics;
+ charsize = bpr * (cim->ascent + cim->descent);
+ size += charsize;
+ }
+ break;
+ case BitmapFormatImageRectMax:
+ bpr = GLWIDTHBYTESPADDED(FONT_MAX_WIDTH(pinfo), scanlinepad);
+ cfv->bpr = bpr;
+ size = (end - start + 1) * bpr * FONT_MAX_HEIGHT(pinfo);
+ break;
+ default:
+ assert(0);
+ }
+
+ return size;
+}
+
+static void
+finish_line(spf)
+ SpeedoFontPtr spf;
+{
+ int bpr = cfv->bpr;
+ CharInfoPtr ci = &spf->encoding[cfv->char_id - spf->master->first_char_id];
+
+ if (bpr == 0) {
+ bpr = GLYPH_SIZE(ci, cfv->scanpad);
+ }
+ if (bpr) { /* char may not have any metrics... */
+ cfv->bp += bpr;
+ }
+ assert(cfv->bp - sp_fp_cur->bitmaps <= sp_fp_cur->bitmap_size);
+}
+
+
+void
+sp_set_bitmap_bits(y, xbit1, xbit2)
+ fix15 y;
+ fix15 xbit1,
+ xbit2;
+{
+ int nmiddle;
+ CARD8 startmask,
+ endmask;
+ CARD8 *dst;
+
+ if (xbit1 > cfv->bit_width) {
+
+#ifdef CLIP_BBOX_NOISE
+ SpeedoErr("Run wider than bitmap width -- truncated\n");
+#endif
+
+ xbit1 = cfv->bit_width;
+ }
+ if (xbit2 > cfv->bit_width) {
+
+#ifdef CLIP_BBOX_NOISE
+ SpeedoErr("Run wider than bitmap width -- truncated\n");
+#endif
+
+ xbit2 = cfv->bit_width;
+ }
+
+ if (xbit2 < xbit1) {
+ xbit2 = xbit1;
+ }
+
+ while (cfv->cur_y != y) {
+ finish_line(sp_fp_cur);
+ cfv->cur_y++;
+ }
+
+ cfv->last_y = y;
+ if (y >= cfv->bit_height) {
+
+#ifdef CLIP_BBOX_NOISE
+ SpeedoErr("Y larger than bitmap height -- truncated\n");
+#endif
+
+ cfv->trunc = 1;
+ return;
+ }
+ if (xbit1 < 0) /* XXX this is more than a little bit rude... */
+ xbit1 = 0;
+
+ nmiddle = (xbit1 >> 3);
+ dst = (CARD8 *) (cfv->bp + nmiddle);
+ xbit2 -= (xbit1 & ~7);
+ nmiddle = (xbit2 >> 3);
+ xbit1 &= 7;
+ xbit2 &= 7;
+ if (bit_order == MSBFirst) {
+ startmask = ((CARD8) ~0) >> xbit1;
+ endmask = ~(((CARD8) ~0) >> xbit2);
+ } else {
+ startmask = ((CARD8) ~0) << xbit1;
+ endmask = ~(((CARD8) ~0) << xbit2);
+ }
+ if (nmiddle == 0)
+ *dst |= endmask & startmask;
+ else {
+ *dst++ |= startmask;
+ while (--nmiddle)
+ *dst++ = (CARD8)~0;
+ *dst |= endmask;
+ }
+}
+
+/* ARGSUSED */
+void
+sp_open_bitmap(x_set_width, y_set_width, xorg, yorg, xsize, ysize)
+ fix31 x_set_width;
+ fix31 y_set_width;
+ fix31 xorg;
+ fix31 yorg;
+ fix15 xsize;
+ fix15 ysize;
+{
+ CharInfoPtr ci = &sp_fp_cur->encoding[cfv->char_id - sp_fp_cur->master->first_char_id];
+
+/*-
+ * this is set to provide better quality bitmaps. since the Speedo
+ * sp_get_bbox() function returns an approximate (but guarenteed to contain)
+ * set of metrics, some of the bitmaps can be place poorly inside and
+ * look bad.
+ *
+ * with this set, the actual bitmap values are used instead of the bboxes.
+ * it makes things look better, but causes two possible problems:
+ *
+ * 1 - the reported min & max bounds may not correspond to the extents
+ * reported
+ * 2 - if the extents are reported before the character is generated,
+ * a client could see them change. this currently never happens,
+ * but will when a desired enhancement (don't reneder till needed)
+ * is made.
+ */
+
+#define BBOX_FIXUP 1
+
+#ifdef BBOX_FIXUP
+ int off_horz;
+ int off_vert;
+
+ if (xorg < 0)
+ off_horz = (fix15) ((xorg - 32768L) / 65536);
+ else
+ off_horz = (fix15) ((xorg + 32768L) / 65536);
+ if (yorg < 0)
+ off_vert = (fix15) ((yorg - 32768L) / 65536);
+ else
+ off_vert = (fix15) ((yorg + 32768L) / 65536);
+ if (xsize != 0 || ysize != 0 || ci->metrics.characterWidth)
+ {
+ ci->metrics.leftSideBearing = off_horz;
+ ci->metrics.descent = -off_vert;
+ ci->metrics.rightSideBearing = xsize + off_horz;
+ ci->metrics.ascent = ysize + off_vert;
+ }
+ else
+ {
+ /* If setting the proper size would cause the character to appear to
+ be non-existent, fudge things by giving it a pixel to occupy. */
+ xsize = ysize = 1;
+ ci->metrics.leftSideBearing = ci->metrics.descent = 0;
+ ci->metrics.rightSideBearing = ci->metrics.ascent = 1;
+ }
+
+ cfv->bit_width = xsize;
+ cfv->bit_height = ysize;
+#else
+ cfv->bit_width = ci->metrics.rightSideBearing -
+ ci->metrics.leftSideBearing;
+ cfv->bit_height = ci->metrics.ascent + ci->metrics.descent;
+#endif
+
+ assert(cfv->bp - sp_fp_cur->bitmaps <= sp_fp_cur->bitmap_size);
+ ci->bits = (char *) cfv->bp;
+
+ cfv->cur_y = 0;
+}
+
+void
+sp_close_bitmap()
+{
+ CharInfoPtr ci = &sp_fp_cur->encoding[cfv->char_id - sp_fp_cur->master->first_char_id];
+ int bpr = cfv->bpr;
+
+ if (bpr == 0)
+ bpr = GLYPH_SIZE(ci, cfv->scanpad);
+ if (!cfv->trunc)
+ finish_line(sp_fp_cur);
+ cfv->trunc = 0;
+ cfv->last_y++;
+ while (cfv->last_y < cfv->bit_height) {
+ finish_line(sp_fp_cur);
+ cfv->last_y++;
+ }
+ if (byte_order != bit_order) {
+ switch (scan) {
+ case 1:
+ break;
+ case 2:
+ TwoByteSwap(cfv->bp, bpr * cfv->bit_height);
+ break;
+ case 4:
+ FourByteSwap(cfv->bp, bpr * cfv->bit_height);
+ break;
+ }
+ }
+}
+
+int
+sp_build_all_bitmaps(pfont, format, fmask)
+ FontPtr pfont;
+ fsBitmapFormat format;
+ fsBitmapFormatMask fmask;
+{
+ int ret,
+ glyph = 1,
+ image = BitmapFormatImageRectMin;
+ unsigned long glyph_size;
+ SpeedoFontPtr spf = (SpeedoFontPtr) pfont->fontPrivate;
+ SpeedoMasterFontPtr spmf = spf->master;
+ pointer bitmaps;
+ int start,
+ end,
+ i;
+
+ scan = 1;
+ ret = CheckFSFormat(format, fmask,
+ &bit_order, &byte_order, &scan, &glyph, &image);
+
+ pfont->bit = bit_order;
+ pfont->byte = byte_order;
+ pfont->glyph = glyph;
+ pfont->scan = scan;
+ if (ret != Successful)
+ return BadFontFormat;
+
+ start = spmf->first_char_id;
+ end = spmf->max_id;
+ glyph_size = sp_compute_data_size(pfont, image, glyph, start, end);
+
+ /* XXX -- MONDO KLUDGE -- add some slop */
+ /*
+ * not sure why this is wanted, but it keeps the packer from going off the
+ * end and toasting us down the line
+ */
+ glyph_size += 20;
+
+#ifdef DEBUG
+ spf->bitmap_size = glyph_size;
+#endif
+
+ bitmaps = (pointer) xalloc(glyph_size);
+ if (!bitmaps)
+ return AllocError;
+ bzero((char *) bitmaps, glyph_size);
+
+ /* set up some state */
+ sp_fp_cur = spf;
+ spf->bitmaps = bitmaps;
+ cfv->format = format;
+ cfv->scanpad = glyph;
+ cfv->bp = bitmaps;
+
+ for (i = 0; i < spmf->num_chars; i++) {
+ int j;
+ cfv->char_index = spmf->enc[i * 2 + 1];
+ cfv->char_id = spmf->enc[i * 2];
+#if DEBUG
+fprintf(stderr, "build_all_sp_bitmaps:i = %d, Char ID = %d\n", i, cfv->char_id);
+#endif
+ if (!cfv->char_id)
+ continue;
+
+ /*
+ * See if this character is in the list of ranges specified in the
+ * XLFD name
+ */
+ for (j = 0; j < spf->vals.nranges; j++)
+ if (cfv->char_id >= mincharno(spf->vals.ranges[j]) &&
+ cfv->char_id <= maxcharno(spf->vals.ranges[j]))
+ break;
+
+ /* If not, don't realize it. */
+ if (spf->vals.nranges && j == spf->vals.nranges)
+ continue;
+
+ if (!sp_make_char(cfv->char_index)) {
+
+#ifdef DEBUG /* can be very common with some encodings */
+ SpeedoErr("Can't make char %d\n", cfv->char_index);
+#endif
+ }
+ }
+
+ return Successful;
+}
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