diff options
Diffstat (limited to 'libX11/src/RdBitF.c')
| -rw-r--r-- | libX11/src/RdBitF.c | 519 |
1 files changed, 262 insertions, 257 deletions
diff --git a/libX11/src/RdBitF.c b/libX11/src/RdBitF.c index e9a509c55..6b920c609 100644 --- a/libX11/src/RdBitF.c +++ b/libX11/src/RdBitF.c @@ -1,257 +1,262 @@ -/* - -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. - -*/ - -/* - * Code to read bitmaps from disk files. Interprets - * data from X10 and X11 bitmap files and creates - * Pixmap representations of files. Returns Pixmap - * ID and specifics about image. - * - * Modified for speedup by Jim Becker, changed image - * data parsing logic (removed some fscanf()s). - * Aug 5, 1988 - * - * Note that this file and ../Xmu/RdBitF.c look very similar.... Keep them - * that way (but don't use common source code so that people can have one - * without the other). - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include "Xlibint.h" -#include <X11/Xos.h> -#include "Xutil.h" -#include <stdio.h> -#include <ctype.h> - - -#define MAX_SIZE 255 - -/* shared data for the image read/parse logic */ -static const signed char hexTable[256] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - ,-1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0 - , 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0 - , 0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - , 0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 - , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; - -/* - * read next hex value in the input stream, return -1 if EOF - */ -static int -NextInt ( - FILE *fstream) -{ - int ch; - int value = 0; - int gotone = 0; - int done = 0; - - /* loop, accumulate hex value until find delimiter */ - /* skip any initial delimiters found in read stream */ - - while (!done) { - ch = getc(fstream); - if (ch == EOF) { - value = -1; - done++; - } else { - /* trim high bits, check type and accumulate */ - ch &= 0xff; - if (isascii(ch) && isxdigit(ch)) { - value = (value << 4) + hexTable[ch]; - gotone++; - } else if ((hexTable[ch]) < 0 && gotone) - done++; - } - } - return value; -} - -int -XReadBitmapFileData ( - _Xconst char *filename, - unsigned int *width, /* RETURNED */ - unsigned int *height, /* RETURNED */ - unsigned char **data, /* RETURNED */ - int *x_hot, /* RETURNED */ - int *y_hot) /* RETURNED */ -{ - FILE *fstream; /* handle on file */ - unsigned char *bits = NULL; /* working variable */ - char line[MAX_SIZE]; /* input line from file */ - int size; /* number of bytes of data */ - char name_and_type[MAX_SIZE]; /* an input line */ - char *type; /* for parsing */ - int value; /* from an input line */ - int version10p; /* boolean, old format */ - int padding; /* to handle alignment */ - int bytes_per_line; /* per scanline of data */ - unsigned int ww = 0; /* width */ - unsigned int hh = 0; /* height */ - int hx = -1; /* x hotspot */ - int hy = -1; /* y hotspot */ - -#ifdef __UNIXOS2__ - filename = __XOS2RedirRoot(filename); -#endif - if (!(fstream = fopen(filename, "r"))) - return BitmapOpenFailed; - - /* error cleanup and return macro */ -#define RETURN(code) \ -{ if (bits) Xfree ((char *)bits); fclose (fstream); return code; } - - while (fgets(line, MAX_SIZE, fstream)) { - if (strlen(line) == MAX_SIZE-1) - RETURN (BitmapFileInvalid); - if (sscanf(line,"#define %s %d",name_and_type,&value) == 2) { - if (!(type = strrchr(name_and_type, '_'))) - type = name_and_type; - else - type++; - - if (!strcmp("width", type)) - ww = (unsigned int) value; - if (!strcmp("height", type)) - hh = (unsigned int) value; - if (!strcmp("hot", type)) { - if (type-- == name_and_type || type-- == name_and_type) - continue; - if (!strcmp("x_hot", type)) - hx = value; - if (!strcmp("y_hot", type)) - hy = value; - } - continue; - } - - if (sscanf(line, "static short %s = {", name_and_type) == 1) - version10p = 1; - else if (sscanf(line,"static unsigned char %s = {",name_and_type) == 1) - version10p = 0; - else if (sscanf(line, "static char %s = {", name_and_type) == 1) - version10p = 0; - else - continue; - - if (!(type = strrchr(name_and_type, '_'))) - type = name_and_type; - else - type++; - - if (strcmp("bits[]", type)) - continue; - - if (!ww || !hh) - RETURN (BitmapFileInvalid); - - if ((ww % 16) && ((ww % 16) < 9) && version10p) - padding = 1; - else - padding = 0; - - bytes_per_line = (ww+7)/8 + padding; - - size = bytes_per_line * hh; - bits = (unsigned char *) Xmalloc ((unsigned int) size); - if (!bits) - RETURN (BitmapNoMemory); - - if (version10p) { - unsigned char *ptr; - int bytes; - - for (bytes=0, ptr=bits; bytes<size; (bytes += 2)) { - if ((value = NextInt(fstream)) < 0) - RETURN (BitmapFileInvalid); - *(ptr++) = value; - if (!padding || ((bytes+2) % bytes_per_line)) - *(ptr++) = value >> 8; - } - } else { - unsigned char *ptr; - int bytes; - - for (bytes=0, ptr=bits; bytes<size; bytes++, ptr++) { - if ((value = NextInt(fstream)) < 0) - RETURN (BitmapFileInvalid); - *ptr=value; - } - } - } /* end while */ - - fclose(fstream); - if (!bits) - return (BitmapFileInvalid); - - *data = bits; - *width = ww; - *height = hh; - if (x_hot) *x_hot = hx; - if (y_hot) *y_hot = hy; - - return (BitmapSuccess); -} - -int -XReadBitmapFile ( - Display *display, - Drawable d, - _Xconst char *filename, - unsigned int *width, /* RETURNED */ - unsigned int *height, /* RETURNED */ - Pixmap *pixmap, /* RETURNED */ - int *x_hot, /* RETURNED */ - int *y_hot) /* RETURNED */ -{ - unsigned char *data; - int res; - - res = XReadBitmapFileData(filename, width, height, &data, x_hot, y_hot); - if (res != BitmapSuccess) - return res; - *pixmap = XCreateBitmapFromData(display, d, (char *)data, *width, *height); - Xfree((char *)data); - if (*pixmap == None) - return (BitmapNoMemory); - return (BitmapSuccess); -} +/*
+
+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.
+
+*/
+
+/*
+ * Code to read bitmaps from disk files. Interprets
+ * data from X10 and X11 bitmap files and creates
+ * Pixmap representations of files. Returns Pixmap
+ * ID and specifics about image.
+ *
+ * Modified for speedup by Jim Becker, changed image
+ * data parsing logic (removed some fscanf()s).
+ * Aug 5, 1988
+ *
+ * Note that this file and ../Xmu/RdBitF.c look very similar.... Keep them
+ * that way (but don't use common source code so that people can have one
+ * without the other).
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "Xlibint.h"
+#include <X11/Xos.h>
+#include "Xutil.h"
+#include <stdio.h>
+#include <ctype.h>
+
+
+#define MAX_SIZE 255
+
+/* shared data for the image read/parse logic */
+static const signed char hexTable[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ ,-1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0
+ , 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0
+ , 0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ , 0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/*
+ * read next hex value in the input stream, return -1 if EOF
+ */
+static int
+NextInt (
+ FILE *fstream)
+{
+ int ch;
+ int value = 0;
+ int gotone = 0;
+ int done = 0;
+
+ /* loop, accumulate hex value until find delimiter */
+ /* skip any initial delimiters found in read stream */
+
+ while (!done) {
+ ch = getc(fstream);
+ if (ch == EOF) {
+ value = -1;
+ done++;
+ } else {
+ /* trim high bits, check type and accumulate */
+ ch &= 0xff;
+ if (isascii(ch) && isxdigit(ch)) {
+ value = (value << 4) + hexTable[ch];
+ gotone++;
+ } else if ((hexTable[ch]) < 0 && gotone)
+ done++;
+ }
+ }
+ return value;
+}
+
+int
+XReadBitmapFileData (
+ _Xconst char *filename,
+ unsigned int *width, /* RETURNED */
+ unsigned int *height, /* RETURNED */
+ unsigned char **data, /* RETURNED */
+ int *x_hot, /* RETURNED */
+ int *y_hot) /* RETURNED */
+{
+ FILE *fstream; /* handle on file */
+ unsigned char *bits = NULL; /* working variable */
+ char line[MAX_SIZE]; /* input line from file */
+ int size; /* number of bytes of data */
+ char name_and_type[MAX_SIZE]; /* an input line */
+ char *type; /* for parsing */
+ int value; /* from an input line */
+ int version10p; /* boolean, old format */
+ int padding; /* to handle alignment */
+ int bytes_per_line; /* per scanline of data */
+ unsigned int ww = 0; /* width */
+ unsigned int hh = 0; /* height */
+ int hx = -1; /* x hotspot */
+ int hy = -1; /* y hotspot */
+
+#ifdef __UNIXOS2__
+ filename = __XOS2RedirRoot(filename);
+#endif
+ if (!(fstream = fopen(filename, "r")))
+ return BitmapOpenFailed;
+
+ /* error cleanup and return macro */
+#define RETURN(code) \
+{ if (bits) Xfree ((char *)bits); fclose (fstream); return code; }
+
+ while (fgets(line, MAX_SIZE, fstream)) {
+ if (strlen(line) == MAX_SIZE-1)
+ RETURN (BitmapFileInvalid);
+ if (sscanf(line,"#define %s %d",name_and_type,&value) == 2) {
+ if (!(type = strrchr(name_and_type, '_')))
+ type = name_and_type;
+ else
+ type++;
+
+ if (!strcmp("width", type))
+ ww = (unsigned int) value;
+ if (!strcmp("height", type))
+ hh = (unsigned int) value;
+ if (!strcmp("hot", type)) {
+ if (type-- == name_and_type || type-- == name_and_type)
+ continue;
+ if (!strcmp("x_hot", type))
+ hx = value;
+ if (!strcmp("y_hot", type))
+ hy = value;
+ }
+ continue;
+ }
+
+ if (sscanf(line, "static short %s = {", name_and_type) == 1)
+ version10p = 1;
+ else if (sscanf(line,"static unsigned char %s = {",name_and_type) == 1)
+ version10p = 0;
+ else if (sscanf(line, "static char %s = {", name_and_type) == 1)
+ version10p = 0;
+ else
+ continue;
+
+ if (!(type = strrchr(name_and_type, '_')))
+ type = name_and_type;
+ else
+ type++;
+
+ if (strcmp("bits[]", type))
+ continue;
+
+ if (!ww || !hh)
+ RETURN (BitmapFileInvalid);
+
+ if ((ww % 16) && ((ww % 16) < 9) && version10p)
+ padding = 1;
+ else
+ padding = 0;
+
+ bytes_per_line = (ww+7)/8 + padding;
+
+ size = bytes_per_line * hh;
+ bits = (unsigned char *) Xmalloc ((unsigned int) size);
+ if (!bits)
+ RETURN (BitmapNoMemory);
+
+ if (version10p) {
+ unsigned char *ptr;
+ int bytes;
+
+ for (bytes=0, ptr=bits; bytes<size; (bytes += 2)) {
+ if ((value = NextInt(fstream)) < 0)
+ RETURN (BitmapFileInvalid);
+ *(ptr++) = value;
+ if (!padding || ((bytes+2) % bytes_per_line))
+ *(ptr++) = value >> 8;
+ }
+ } else {
+ unsigned char *ptr;
+ int bytes;
+
+ for (bytes=0, ptr=bits; bytes<size; bytes++, ptr++) {
+ if ((value = NextInt(fstream)) < 0)
+ RETURN (BitmapFileInvalid);
+ *ptr=value;
+ }
+ }
+
+ /* If we got to this point, we read a full bitmap file. Break so we don't
+ * start reading another one from the same file and leak the memory
+ * allocated for the previous one. */
+ break;
+ } /* end while */
+
+ fclose(fstream);
+ if (!bits)
+ return (BitmapFileInvalid);
+
+ *data = bits;
+ *width = ww;
+ *height = hh;
+ if (x_hot) *x_hot = hx;
+ if (y_hot) *y_hot = hy;
+
+ return (BitmapSuccess);
+}
+
+int
+XReadBitmapFile (
+ Display *display,
+ Drawable d,
+ _Xconst char *filename,
+ unsigned int *width, /* RETURNED */
+ unsigned int *height, /* RETURNED */
+ Pixmap *pixmap, /* RETURNED */
+ int *x_hot, /* RETURNED */
+ int *y_hot) /* RETURNED */
+{
+ unsigned char *data;
+ int res;
+
+ res = XReadBitmapFileData(filename, width, height, &data, x_hot, y_hot);
+ if (res != BitmapSuccess)
+ return res;
+ *pixmap = XCreateBitmapFromData(display, d, (char *)data, *width, *height);
+ Xfree((char *)data);
+ if (*pixmap == None)
+ return (BitmapNoMemory);
+ return (BitmapSuccess);
+}
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