diff options
Diffstat (limited to 'libXfont/src/bitmap/fontink.c')
| -rw-r--r-- | libXfont/src/bitmap/fontink.c | 432 |
1 files changed, 216 insertions, 216 deletions
diff --git a/libXfont/src/bitmap/fontink.c b/libXfont/src/bitmap/fontink.c index 551b81b28..ad7091fa6 100644 --- a/libXfont/src/bitmap/fontink.c +++ b/libXfont/src/bitmap/fontink.c @@ -1,216 +1,216 @@ -/*
-
-Copyright 1990, 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
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <X11/fonts/fntfilst.h>
-#include <X11/fonts/bitmap.h>
-#include <X11/fonts/bdfint.h>
-
-static unsigned char ink_mask_msb[8] = {
- 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01,
-};
-
-static unsigned char ink_mask_lsb[8] = {
- 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
-};
-
-void
-FontCharInkMetrics(FontPtr pFont, CharInfoPtr pCI, xCharInfo *pInk)
-{
- int leftBearing,
- ascent,
- descent;
- register int vpos,
- hpos,
- bpos = 0;
- int bitmapByteWidth,
- bitmapByteWidthPadded;
- int bitmapBitWidth;
- int span;
- register unsigned char *p;
- unsigned char *ink_mask = 0;
- register int bmax;
- register unsigned char charbits;
-
- if (pFont->bit == MSBFirst)
- ink_mask = ink_mask_msb;
- else if (pFont->bit == LSBFirst)
- ink_mask = ink_mask_lsb;
- pInk->characterWidth = pCI->metrics.characterWidth;
- pInk->attributes = pCI->metrics.attributes;
-
- leftBearing = pCI->metrics.leftSideBearing;
- ascent = pCI->metrics.ascent;
- descent = pCI->metrics.descent;
- bitmapBitWidth = GLYPHWIDTHPIXELS(pCI);
- bitmapByteWidth = GLYPHWIDTHBYTES(pCI);
- bitmapByteWidthPadded = BYTES_PER_ROW(bitmapBitWidth, pFont->glyph);
- span = bitmapByteWidthPadded - bitmapByteWidth;
-
- p = (unsigned char *) pCI->bits;
- for (vpos = descent + ascent; --vpos >= 0;) {
- for (hpos = bitmapByteWidth; --hpos >= 0;) {
- if (*p++ != 0)
- goto found_ascent;
- }
- p += span;
- }
- /*
- * special case -- font with no bits gets all zeros
- */
- pInk->leftSideBearing = leftBearing;
- pInk->rightSideBearing = leftBearing;
- pInk->ascent = 0;
- pInk->descent = 0;
- return;
-found_ascent:
- pInk->ascent = vpos - descent + 1;
-
- p = ((unsigned char *) pCI->bits) + bitmapByteWidthPadded *
- (descent + ascent - 1) + bitmapByteWidth;
-
- for (vpos = descent + ascent; --vpos >= 0;) {
- for (hpos = bitmapByteWidth; --hpos >= 0;) {
- if (*--p != 0)
- goto found_descent;
- }
- p -= span;
- }
-found_descent:
- pInk->descent = vpos - ascent + 1;
-
- bmax = 8;
- for (hpos = 0; hpos < bitmapByteWidth; hpos++) {
- charbits = 0;
- p = (unsigned char *) pCI->bits + hpos;
- for (vpos = descent + ascent; --vpos >= 0; p += bitmapByteWidthPadded)
- charbits |= *p;
- if (charbits) {
- if (hpos == bitmapByteWidth - 1)
- bmax = bitmapBitWidth - (hpos << 3);
- p = ink_mask;
- for (bpos = bmax; --bpos >= 0;) {
- if (charbits & *p++)
- goto found_left;
- }
- }
- }
-found_left:
- pInk->leftSideBearing = leftBearing + (hpos << 3) + bmax - bpos - 1;
-
- bmax = bitmapBitWidth - ((bitmapByteWidth - 1) << 3);
- for (hpos = bitmapByteWidth; --hpos >= 0;) {
- charbits = 0;
- p = (unsigned char *) pCI->bits + hpos;
- for (vpos = descent + ascent; --vpos >= 0; p += bitmapByteWidthPadded)
- charbits |= *p;
- if (charbits) {
- p = ink_mask + bmax;
- for (bpos = bmax; --bpos >= 0;) {
- if (charbits & *--p)
- goto found_right;
- }
- }
- bmax = 8;
- }
-found_right:
- pInk->rightSideBearing = leftBearing + (hpos << 3) + bpos + 1;
-}
-
-#define ISBITONMSB(x, line) ((line)[(x)/8] & (1 << (7-((x)%8))))
-#define SETBITMSB(x, line) ((line)[(x)/8] |= (1 << (7-((x)%8))))
-#define ISBITONLSB(x, line) ((line)[(x)/8] & (1 << ((x)%8)))
-#define SETBITLSB(x, line) ((line)[(x)/8] |= (1 << ((x)%8)))
-
-#define Min(a,b) ((a)<(b)?(a):(b))
-#define Max(a,b) ((a)>(b)?(a):(b))
-
-void
-FontCharReshape(FontPtr pFont, CharInfoPtr pSrc, CharInfoPtr pDst)
-{
- int x,
- y;
- unsigned char *in_line,
- *out_line;
- unsigned char *oldglyph,
- *newglyph;
- int inwidth;
- int outwidth,
- outheight;
- int out_bytes,
- in_bytes;
- int y_min,
- y_max,
- x_min,
- x_max;
-
- newglyph = (unsigned char *) pDst->bits;
- outwidth = pDst->metrics.rightSideBearing - pDst->metrics.leftSideBearing;
- outheight = pDst->metrics.descent + pDst->metrics.ascent;
- out_bytes = BYTES_PER_ROW(outwidth, pFont->glyph);
-
- oldglyph = (unsigned char *) pSrc->bits;
- inwidth = pSrc->metrics.rightSideBearing - pSrc->metrics.leftSideBearing;
- in_bytes = BYTES_PER_ROW(inwidth, pFont->glyph);
-
- bzero(newglyph, out_bytes * outheight);
- in_line = oldglyph;
- out_line = newglyph;
- y_min = Max(-pSrc->metrics.ascent, -pDst->metrics.ascent);
- y_max = Min(pSrc->metrics.descent, pDst->metrics.descent);
- x_min = Max(pSrc->metrics.leftSideBearing, pDst->metrics.leftSideBearing);
- x_max = Min(pSrc->metrics.rightSideBearing, pDst->metrics.rightSideBearing);
- in_line += (y_min + pSrc->metrics.ascent) * in_bytes;
- out_line += (y_min + pDst->metrics.ascent) * out_bytes;
- if (pFont->bit == MSBFirst) {
- for (y = y_min; y < y_max; y++) {
- for (x = x_min; x < x_max; x++) {
- if (ISBITONMSB(x - pSrc->metrics.leftSideBearing, in_line))
- SETBITMSB(x - pDst->metrics.leftSideBearing, out_line);
- }
- in_line += in_bytes;
- out_line += out_bytes;
- }
- } else {
- for (y = y_min; y < y_max; y++) {
- for (x = x_min; x < x_max; x++) {
- if (ISBITONLSB(x - pSrc->metrics.leftSideBearing, in_line))
- SETBITLSB(x - pDst->metrics.leftSideBearing, out_line);
- }
- in_line += in_bytes;
- out_line += out_bytes;
- }
- }
-}
+/* + +Copyright 1990, 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 + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <X11/fonts/fntfilst.h> +#include <X11/fonts/bitmap.h> +#include <X11/fonts/bdfint.h> + +static unsigned char ink_mask_msb[8] = { + 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01, +}; + +static unsigned char ink_mask_lsb[8] = { + 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, +}; + +void +FontCharInkMetrics(FontPtr pFont, CharInfoPtr pCI, xCharInfo *pInk) +{ + int leftBearing, + ascent, + descent; + register int vpos, + hpos, + bpos = 0; + int bitmapByteWidth, + bitmapByteWidthPadded; + int bitmapBitWidth; + int span; + register unsigned char *p; + unsigned char *ink_mask = 0; + register int bmax; + register unsigned char charbits; + + if (pFont->bit == MSBFirst) + ink_mask = ink_mask_msb; + else if (pFont->bit == LSBFirst) + ink_mask = ink_mask_lsb; + pInk->characterWidth = pCI->metrics.characterWidth; + pInk->attributes = pCI->metrics.attributes; + + leftBearing = pCI->metrics.leftSideBearing; + ascent = pCI->metrics.ascent; + descent = pCI->metrics.descent; + bitmapBitWidth = GLYPHWIDTHPIXELS(pCI); + bitmapByteWidth = GLYPHWIDTHBYTES(pCI); + bitmapByteWidthPadded = BYTES_PER_ROW(bitmapBitWidth, pFont->glyph); + span = bitmapByteWidthPadded - bitmapByteWidth; + + p = (unsigned char *) pCI->bits; + for (vpos = descent + ascent; --vpos >= 0;) { + for (hpos = bitmapByteWidth; --hpos >= 0;) { + if (*p++ != 0) + goto found_ascent; + } + p += span; + } + /* + * special case -- font with no bits gets all zeros + */ + pInk->leftSideBearing = leftBearing; + pInk->rightSideBearing = leftBearing; + pInk->ascent = 0; + pInk->descent = 0; + return; +found_ascent: + pInk->ascent = vpos - descent + 1; + + p = ((unsigned char *) pCI->bits) + bitmapByteWidthPadded * + (descent + ascent - 1) + bitmapByteWidth; + + for (vpos = descent + ascent; --vpos >= 0;) { + for (hpos = bitmapByteWidth; --hpos >= 0;) { + if (*--p != 0) + goto found_descent; + } + p -= span; + } +found_descent: + pInk->descent = vpos - ascent + 1; + + bmax = 8; + for (hpos = 0; hpos < bitmapByteWidth; hpos++) { + charbits = 0; + p = (unsigned char *) pCI->bits + hpos; + for (vpos = descent + ascent; --vpos >= 0; p += bitmapByteWidthPadded) + charbits |= *p; + if (charbits) { + if (hpos == bitmapByteWidth - 1) + bmax = bitmapBitWidth - (hpos << 3); + p = ink_mask; + for (bpos = bmax; --bpos >= 0;) { + if (charbits & *p++) + goto found_left; + } + } + } +found_left: + pInk->leftSideBearing = leftBearing + (hpos << 3) + bmax - bpos - 1; + + bmax = bitmapBitWidth - ((bitmapByteWidth - 1) << 3); + for (hpos = bitmapByteWidth; --hpos >= 0;) { + charbits = 0; + p = (unsigned char *) pCI->bits + hpos; + for (vpos = descent + ascent; --vpos >= 0; p += bitmapByteWidthPadded) + charbits |= *p; + if (charbits) { + p = ink_mask + bmax; + for (bpos = bmax; --bpos >= 0;) { + if (charbits & *--p) + goto found_right; + } + } + bmax = 8; + } +found_right: + pInk->rightSideBearing = leftBearing + (hpos << 3) + bpos + 1; +} + +#define ISBITONMSB(x, line) ((line)[(x)/8] & (1 << (7-((x)%8)))) +#define SETBITMSB(x, line) ((line)[(x)/8] |= (1 << (7-((x)%8)))) +#define ISBITONLSB(x, line) ((line)[(x)/8] & (1 << ((x)%8))) +#define SETBITLSB(x, line) ((line)[(x)/8] |= (1 << ((x)%8))) + +#define Min(a,b) ((a)<(b)?(a):(b)) +#define Max(a,b) ((a)>(b)?(a):(b)) + +void +FontCharReshape(FontPtr pFont, CharInfoPtr pSrc, CharInfoPtr pDst) +{ + int x, + y; + unsigned char *in_line, + *out_line; + unsigned char *oldglyph, + *newglyph; + int inwidth; + int outwidth, + outheight; + int out_bytes, + in_bytes; + int y_min, + y_max, + x_min, + x_max; + + newglyph = (unsigned char *) pDst->bits; + outwidth = pDst->metrics.rightSideBearing - pDst->metrics.leftSideBearing; + outheight = pDst->metrics.descent + pDst->metrics.ascent; + out_bytes = BYTES_PER_ROW(outwidth, pFont->glyph); + + oldglyph = (unsigned char *) pSrc->bits; + inwidth = pSrc->metrics.rightSideBearing - pSrc->metrics.leftSideBearing; + in_bytes = BYTES_PER_ROW(inwidth, pFont->glyph); + + bzero(newglyph, out_bytes * outheight); + in_line = oldglyph; + out_line = newglyph; + y_min = Max(-pSrc->metrics.ascent, -pDst->metrics.ascent); + y_max = Min(pSrc->metrics.descent, pDst->metrics.descent); + x_min = Max(pSrc->metrics.leftSideBearing, pDst->metrics.leftSideBearing); + x_max = Min(pSrc->metrics.rightSideBearing, pDst->metrics.rightSideBearing); + in_line += (y_min + pSrc->metrics.ascent) * in_bytes; + out_line += (y_min + pDst->metrics.ascent) * out_bytes; + if (pFont->bit == MSBFirst) { + for (y = y_min; y < y_max; y++) { + for (x = x_min; x < x_max; x++) { + if (ISBITONMSB(x - pSrc->metrics.leftSideBearing, in_line)) + SETBITMSB(x - pDst->metrics.leftSideBearing, out_line); + } + in_line += in_bytes; + out_line += out_bytes; + } + } else { + for (y = y_min; y < y_max; y++) { + for (x = x_min; x < x_max; x++) { + if (ISBITONLSB(x - pSrc->metrics.leftSideBearing, in_line)) + SETBITLSB(x - pDst->metrics.leftSideBearing, out_line); + } + in_line += in_bytes; + out_line += out_bytes; + } + } +} |