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-rw-r--r--src/bitmap/pcfwrite.c494
1 files changed, 494 insertions, 0 deletions
diff --git a/src/bitmap/pcfwrite.c b/src/bitmap/pcfwrite.c
new file mode 100644
index 0000000..39f79bc
--- /dev/null
+++ b/src/bitmap/pcfwrite.c
@@ -0,0 +1,494 @@
+/* $Xorg: pcfwrite.c,v 1.5 2001/02/09 02:04:02 xorgcvs Exp $ */
+
+/*
+
+Copyright 1990, 1994, 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.
+
+*/
+
+/*
+ * Author: Keith Packard, MIT X Consortium
+ */
+
+
+#include "fntfilst.h"
+#include "bitmap.h"
+#include "pcf.h"
+
+extern void pcfError(
+#if NeedVarargsPrototypes
+ char* message, ...
+#endif
+);
+
+/* Write PCF font files */
+
+static int current_position;
+
+static int
+pcfWrite(file, b, c)
+ FontFilePtr file;
+ char *b;
+ int c;
+{
+ current_position += c;
+ return FontFileWrite(file, b, c);
+}
+
+static int
+pcfPutLSB32(file, c)
+ FontFilePtr file;
+{
+ current_position += 4;
+ (void) FontFilePutc(c, file);
+ (void) FontFilePutc(c >> 8, file);
+ (void) FontFilePutc(c >> 16, file);
+ return FontFilePutc(c >> 24, file);
+}
+
+static int
+pcfPutINT32(file, format, c)
+ FontFilePtr file;
+ CARD32 format;
+{
+ current_position += 4;
+ if (PCF_BYTE_ORDER(format) == MSBFirst) {
+ (void) FontFilePutc(c >> 24, file);
+ (void) FontFilePutc(c >> 16, file);
+ (void) FontFilePutc(c >> 8, file);
+ return FontFilePutc(c, file);
+ } else {
+ (void) FontFilePutc(c, file);
+ (void) FontFilePutc(c >> 8, file);
+ (void) FontFilePutc(c >> 16, file);
+ return FontFilePutc(c >> 24, file);
+ }
+}
+
+static int
+pcfPutINT16(file, format, c)
+ FontFilePtr file;
+ CARD32 format;
+{
+ current_position += 2;
+ if (PCF_BYTE_ORDER(format) == MSBFirst) {
+ (void) FontFilePutc(c >> 8, file);
+ return FontFilePutc(c, file);
+ } else {
+ (void) FontFilePutc(c, file);
+ return FontFilePutc(c >> 8, file);
+ }
+}
+
+/*ARGSUSED*/
+static int
+pcfPutINT8(file, format, c)
+ FontFilePtr file;
+ CARD32 format;
+{
+ current_position += 1;
+ return FontFilePutc(c, file);
+}
+
+static void
+pcfWriteTOC(file, table, count)
+ FontFilePtr file;
+ PCFTablePtr table;
+ int count;
+{
+ CARD32 version;
+ int i;
+
+ version = PCF_FILE_VERSION;
+ pcfPutLSB32(file, version);
+ pcfPutLSB32(file, count);
+ for (i = 0; i < count; i++) {
+ pcfPutLSB32(file, table->type);
+ pcfPutLSB32(file, table->format);
+ pcfPutLSB32(file, table->size);
+ pcfPutLSB32(file, table->offset);
+ table++;
+ }
+}
+
+static void
+pcfPutCompressedMetric(file, format, metric)
+ FontFilePtr file;
+ CARD32 format;
+ xCharInfo *metric;
+{
+ pcfPutINT8(file, format, metric->leftSideBearing + 0x80);
+ pcfPutINT8(file, format, metric->rightSideBearing + 0x80);
+ pcfPutINT8(file, format, metric->characterWidth + 0x80);
+ pcfPutINT8(file, format, metric->ascent + 0x80);
+ pcfPutINT8(file, format, metric->descent + 0x80);
+}
+
+static void
+pcfPutMetric(file, format, metric)
+ FontFilePtr file;
+ CARD32 format;
+ xCharInfo *metric;
+{
+ pcfPutINT16(file, format, metric->leftSideBearing);
+ pcfPutINT16(file, format, metric->rightSideBearing);
+ pcfPutINT16(file, format, metric->characterWidth);
+ pcfPutINT16(file, format, metric->ascent);
+ pcfPutINT16(file, format, metric->descent);
+ pcfPutINT16(file, format, metric->attributes);
+}
+
+static void
+pcfPutBitmap(file, format, pCI)
+ FontFilePtr file;
+ CARD32 format;
+ CharInfoPtr pCI;
+{
+ int count;
+ unsigned char *bits;
+
+ count = BYTES_FOR_GLYPH(pCI, PCF_GLYPH_PAD(format));
+ bits = (unsigned char *) pCI->bits;
+ current_position += count;
+ while (count--)
+ FontFilePutc(*bits++, file);
+}
+
+static void
+pcfPutAccel(file, format, pFontInfo)
+ FontFilePtr file;
+ CARD32 format;
+ FontInfoPtr pFontInfo;
+{
+ pcfPutINT8(file, format, pFontInfo->noOverlap);
+ pcfPutINT8(file, format, pFontInfo->constantMetrics);
+ pcfPutINT8(file, format, pFontInfo->terminalFont);
+ pcfPutINT8(file, format, pFontInfo->constantWidth);
+ pcfPutINT8(file, format, pFontInfo->inkInside);
+ pcfPutINT8(file, format, pFontInfo->inkMetrics);
+ pcfPutINT8(file, format, pFontInfo->drawDirection);
+ pcfPutINT8(file, format, 0);
+ pcfPutINT32(file, format, pFontInfo->fontAscent);
+ pcfPutINT32(file, format, pFontInfo->fontDescent);
+ pcfPutINT32(file, format, pFontInfo->maxOverlap);
+ pcfPutMetric(file, format, &pFontInfo->minbounds);
+ pcfPutMetric(file, format, &pFontInfo->maxbounds);
+ if (PCF_FORMAT_MATCH(format, PCF_ACCEL_W_INKBOUNDS)) {
+ pcfPutMetric(file, format, &pFontInfo->ink_minbounds);
+ pcfPutMetric(file, format, &pFontInfo->ink_maxbounds);
+ }
+}
+
+#define S32 4
+#define S16 2
+#define S8 1
+
+#define Pad(s) (RoundUp(s) - (s))
+#define RoundUp(s) (((s) + 3) & ~3)
+
+#define Compressable(i) (-128 <= (i) && (i) <= 127)
+
+#define CanCompressMetric(m) (Compressable((m)->leftSideBearing) && \
+ Compressable((m)->rightSideBearing) && \
+ Compressable((m)->characterWidth) && \
+ Compressable((m)->ascent) && \
+ Compressable((m)->descent) && \
+ (m)->attributes == 0)
+
+#define CanCompressMetrics(min,max) (CanCompressMetric(min) && CanCompressMetric(max))
+
+static char *
+pcfNameForAtom(a)
+ Atom a;
+{
+ return NameForAtom(a);
+}
+
+int
+pcfWriteFont(pFont, file)
+ FontPtr pFont;
+ FontFilePtr file;
+{
+ PCFTableRec tables[32],
+ *table;
+ CARD32 mask,
+ bit;
+ int ntables;
+ int size;
+ CARD32 format;
+ int i;
+ int cur_table;
+ int prop_string_size;
+ int glyph_string_size;
+ xCharInfo *minbounds,
+ *maxbounds;
+ xCharInfo *ink_minbounds,
+ *ink_maxbounds;
+ BitmapFontPtr bitmapFont;
+ int nencodings;
+ int header_size;
+ FontPropPtr offsetProps;
+ int prop_pad;
+ char *atom_name;
+ int glyph;
+ int offset;
+
+ bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
+ if (bitmapFont->bitmapExtra) {
+ minbounds = &bitmapFont->bitmapExtra->info.minbounds;
+ maxbounds = &bitmapFont->bitmapExtra->info.maxbounds;
+ ink_minbounds = &bitmapFont->bitmapExtra->info.ink_minbounds;
+ ink_maxbounds = &bitmapFont->bitmapExtra->info.ink_maxbounds;
+ } else {
+ minbounds = &pFont->info.minbounds;
+ maxbounds = &pFont->info.maxbounds;
+ ink_minbounds = &pFont->info.ink_minbounds;
+ ink_maxbounds = &pFont->info.ink_maxbounds;
+ }
+ offsetProps = (FontPropPtr) xalloc(pFont->info.nprops * sizeof(FontPropRec));
+ if (!offsetProps) {
+ pcfError("pcfWriteFont(): Couldn't allocate offsetProps (%d*%d)", pFont->info.nprops, sizeof(FontPropRec));
+ return AllocError;
+ }
+ prop_string_size = 0;
+ for (i = 0; i < pFont->info.nprops; i++) {
+ offsetProps[i].name = prop_string_size;
+ prop_string_size += strlen(pcfNameForAtom(pFont->info.props[i].name)) + 1;
+ if (pFont->info.isStringProp[i]) {
+ offsetProps[i].value = prop_string_size;
+ prop_string_size += strlen(pcfNameForAtom(pFont->info.props[i].value)) + 1;
+ } else
+ offsetProps[i].value = pFont->info.props[i].value;
+ }
+ format = PCF_FORMAT(pFont->bit, pFont->byte, pFont->glyph, pFont->scan);
+ mask = 0xFFFFFFF;
+ ntables = 0;
+ table = tables;
+ while (mask) {
+ bit = lowbit(mask);
+ mask &= ~bit;
+ table->type = bit;
+ switch (bit) {
+ case PCF_PROPERTIES:
+ table->format = PCF_DEFAULT_FORMAT | format;
+ size = S32 + S32 + (S32 + S8 + S32) * pFont->info.nprops;
+ prop_pad = Pad(size);
+ table->size = RoundUp(size) + S32 +
+ RoundUp(prop_string_size);
+ table++;
+ break;
+ case PCF_ACCELERATORS:
+ if (bitmapFont->bitmapExtra->info.inkMetrics)
+ table->format = PCF_ACCEL_W_INKBOUNDS | format;
+ else
+ table->format = PCF_DEFAULT_FORMAT | format;
+ table->size = 100;
+ table++;
+ break;
+ case PCF_METRICS:
+ if (CanCompressMetrics(minbounds, maxbounds)) {
+ table->format = PCF_COMPRESSED_METRICS | format;
+ size = S32 + S16 + bitmapFont->num_chars * (5 * S8);
+ table->size = RoundUp(size);
+ } else {
+ table->format = PCF_DEFAULT_FORMAT | format;
+ table->size = S32 + S32 + bitmapFont->num_chars * (6 * S16);
+ }
+ table++;
+ break;
+ case PCF_BITMAPS:
+ table->format = PCF_DEFAULT_FORMAT | format;
+ size = S32 + S32 + bitmapFont->num_chars * S32 +
+ GLYPHPADOPTIONS * S32 +
+ bitmapFont->bitmapExtra->bitmapsSizes[PCF_GLYPH_PAD_INDEX(format)];
+ table->size = RoundUp(size);
+ table++;
+ break;
+ case PCF_INK_METRICS:
+ if (bitmapFont->ink_metrics) {
+ if (CanCompressMetrics(ink_minbounds, ink_maxbounds)) {
+ table->format = PCF_COMPRESSED_METRICS | format;
+ size = S32 + S16 + bitmapFont->num_chars * (5 * S8);
+ table->size = RoundUp(size);
+ } else {
+ table->format = PCF_DEFAULT_FORMAT | format;
+ table->size = S32 + S32 + bitmapFont->num_chars * (6 * S16);
+ }
+ table++;
+ }
+ break;
+ case PCF_BDF_ENCODINGS:
+ table->format = PCF_DEFAULT_FORMAT | format;
+ nencodings = (pFont->info.lastRow - pFont->info.firstRow + 1) *
+ (pFont->info.lastCol - pFont->info.firstCol + 1);
+ size = S32 + 5 * S16 + nencodings * S16;
+ table->size = RoundUp(size);
+ table++;
+ break;
+ case PCF_SWIDTHS:
+ table->format = PCF_DEFAULT_FORMAT | format;
+ table->size = S32 + S32 + bitmapFont->num_chars * S32;
+ table++;
+ break;
+ case PCF_GLYPH_NAMES:
+ table->format = PCF_DEFAULT_FORMAT | format;
+ glyph_string_size = 0;
+ for (i = 0; i < bitmapFont->num_chars; i++)
+ glyph_string_size += strlen(pcfNameForAtom(bitmapFont->bitmapExtra->glyphNames[i])) + 1;
+ table->size = S32 + S32 + bitmapFont->num_chars * S32 +
+ S32 + RoundUp(glyph_string_size);
+ table++;
+ break;
+ case PCF_BDF_ACCELERATORS:
+ if (pFont->info.inkMetrics)
+ table->format = PCF_ACCEL_W_INKBOUNDS | format;
+ else
+ table->format = PCF_DEFAULT_FORMAT | format;
+ table->size = 100;
+ table++;
+ break;
+ }
+ }
+ ntables = table - tables;
+ offset = 0;
+ header_size = S32 + S32 + ntables * (4 * S32);
+ offset = header_size;
+ for (cur_table = 0, table = tables;
+ cur_table < ntables;
+ cur_table++, table++) {
+ table->offset = offset;
+ offset += table->size;
+ }
+ current_position = 0;
+ pcfWriteTOC(file, tables, ntables);
+ for (cur_table = 0, table = tables;
+ cur_table < ntables;
+ cur_table++, table++) {
+ if (current_position > table->offset) {
+ printf("can't go backwards... %d > %d\n",
+ current_position, table->offset);
+ return BadFontName;
+ }
+ while (current_position < table->offset)
+ pcfPutINT8(file, format, '\0');
+ pcfPutLSB32(file, table->format);
+ switch (table->type) {
+ case PCF_PROPERTIES:
+ pcfPutINT32(file, format, pFont->info.nprops);
+ for (i = 0; i < pFont->info.nprops; i++) {
+ pcfPutINT32(file, format, offsetProps[i].name);
+ pcfPutINT8(file, format, pFont->info.isStringProp[i]);
+ pcfPutINT32(file, format, offsetProps[i].value);
+ }
+ for (i = 0; i < prop_pad; i++)
+ pcfPutINT8(file, format, 0);
+ pcfPutINT32(file, format, prop_string_size);
+ for (i = 0; i < pFont->info.nprops; i++) {
+ atom_name = pcfNameForAtom(pFont->info.props[i].name);
+ pcfWrite(file, atom_name, strlen(atom_name) + 1);
+ if (pFont->info.isStringProp[i]) {
+ atom_name = pcfNameForAtom(pFont->info.props[i].value);
+ pcfWrite(file, atom_name, strlen(atom_name) + 1);
+ }
+ }
+ break;
+ case PCF_ACCELERATORS:
+ pcfPutAccel(file, table->format, &bitmapFont->bitmapExtra->info);
+ break;
+ case PCF_METRICS:
+ if (PCF_FORMAT_MATCH(table->format, PCF_COMPRESSED_METRICS)) {
+ pcfPutINT16(file, format, bitmapFont->num_chars);
+ for (i = 0; i < bitmapFont->num_chars; i++)
+ pcfPutCompressedMetric(file, format, &bitmapFont->metrics[i].metrics);
+ } else {
+ pcfPutINT32(file, format, bitmapFont->num_chars);
+ for (i = 0; i < bitmapFont->num_chars; i++)
+ pcfPutMetric(file, format, &bitmapFont->metrics[i].metrics);
+ }
+ break;
+ case PCF_BITMAPS:
+ pcfPutINT32(file, format, bitmapFont->num_chars);
+ glyph = PCF_GLYPH_PAD(format);
+ offset = 0;
+ for (i = 0; i < bitmapFont->num_chars; i++) {
+ pcfPutINT32(file, format, offset);
+ offset += BYTES_FOR_GLYPH(&bitmapFont->metrics[i], glyph);
+ }
+ for (i = 0; i < GLYPHPADOPTIONS; i++) {
+ pcfPutINT32(file, format,
+ bitmapFont->bitmapExtra->bitmapsSizes[i]);
+ }
+ for (i = 0; i < bitmapFont->num_chars; i++)
+ pcfPutBitmap(file, format, &bitmapFont->metrics[i]);
+ break;
+ case PCF_INK_METRICS:
+ if (PCF_FORMAT_MATCH(table->format, PCF_COMPRESSED_METRICS)) {
+ pcfPutINT16(file, format, bitmapFont->num_chars);
+ for (i = 0; i < bitmapFont->num_chars; i++)
+ pcfPutCompressedMetric(file, format, &bitmapFont->ink_metrics[i]);
+ } else {
+ pcfPutINT32(file, format, bitmapFont->num_chars);
+ for (i = 0; i < bitmapFont->num_chars; i++)
+ pcfPutMetric(file, format, &bitmapFont->ink_metrics[i]);
+ }
+ break;
+ case PCF_BDF_ENCODINGS:
+ pcfPutINT16(file, format, pFont->info.firstCol);
+ pcfPutINT16(file, format, pFont->info.lastCol);
+ pcfPutINT16(file, format, pFont->info.firstRow);
+ pcfPutINT16(file, format, pFont->info.lastRow);
+ pcfPutINT16(file, format, pFont->info.defaultCh);
+ for (i = 0; i < nencodings; i++) {
+ if (bitmapFont->encoding[i])
+ pcfPutINT16(file, format, bitmapFont->encoding[i] - bitmapFont->metrics);
+ else
+ pcfPutINT16(file, format, 0xFFFF);
+ }
+ break;
+ case PCF_SWIDTHS:
+ pcfPutINT32(file, format, bitmapFont->num_chars);
+ for (i = 0; i < bitmapFont->num_chars; i++)
+ pcfPutINT32(file, format, bitmapFont->bitmapExtra->sWidths[i]);
+ break;
+ case PCF_GLYPH_NAMES:
+ pcfPutINT32(file, format, bitmapFont->num_chars);
+ offset = 0;
+ for (i = 0; i < bitmapFont->num_chars; i++) {
+ pcfPutINT32(file, format, offset);
+ offset += strlen(pcfNameForAtom(bitmapFont->bitmapExtra->glyphNames[i])) + 1;
+ }
+ pcfPutINT32(file, format, offset);
+ for (i = 0; i < bitmapFont->num_chars; i++) {
+ atom_name = pcfNameForAtom(bitmapFont->bitmapExtra->glyphNames[i]);
+ pcfWrite(file, atom_name, strlen(atom_name) + 1);
+ }
+ break;
+ case PCF_BDF_ACCELERATORS:
+ pcfPutAccel(file, table->format, &pFont->info);
+ break;
+ }
+ }
+ return Successful;
+}
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