309 lines
8.5 KiB
C
309 lines
8.5 KiB
C
/*
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* Copyright (C) 1989-95 GROUPE BULL
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of GROUPE BULL shall not be
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* used in advertising or otherwise to promote the sale, use or other dealings
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* in this Software without prior written authorization from GROUPE BULL.
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*/
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/*****************************************************************************\
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* Attrib.c: *
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* *
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* XPM library *
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* Functions related to the XpmAttributes structure *
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* *
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* Developed by Arnaud Le Hors *
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\*****************************************************************************/
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/* October 2004, source code review by Thomas Biege <thomas@suse.de> */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "XpmI.h"
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/* 3.2 backward compatibility code */
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LFUNC(CreateOldColorTable, int, (XpmColor *ct, unsigned int ncolors,
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XpmColor ***oldct));
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LFUNC(FreeOldColorTable, void, (XpmColor **colorTable, unsigned int ncolors));
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/*
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* Create a colortable compatible with the old style colortable
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*/
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static int
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CreateOldColorTable(
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XpmColor *ct,
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unsigned int ncolors,
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XpmColor ***oldct)
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{
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XpmColor **colorTable, **color;
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unsigned int a;
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if (ncolors >= UINT_MAX / sizeof(XpmColor *))
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return XpmNoMemory;
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colorTable = (XpmColor **) XpmMalloc(ncolors * sizeof(XpmColor *));
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if (!colorTable) {
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*oldct = NULL;
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return (XpmNoMemory);
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}
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for (a = 0, color = colorTable; a < ncolors; a++, color++, ct++)
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*color = ct;
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*oldct = colorTable;
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return (XpmSuccess);
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}
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static void
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FreeOldColorTable(
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XpmColor **colorTable,
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unsigned int ncolors)
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{
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unsigned int a, b;
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XpmColor **color;
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char **sptr;
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if (colorTable) {
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for (a = 0, color = colorTable; a < ncolors; a++, color++) {
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for (b = 0, sptr = (char **) *color; b <= NKEYS; b++, sptr++)
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if (*sptr)
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XpmFree(*sptr);
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}
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XpmFree(*colorTable);
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XpmFree(colorTable);
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}
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}
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/* end 3.2 bc */
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/*
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* Free the computed color table
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*/
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void
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xpmFreeColorTable(
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XpmColor *colorTable,
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int ncolors)
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{
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int a, b;
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XpmColor *color;
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char **sptr;
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if (colorTable) {
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for (a = 0, color = colorTable; a < ncolors; a++, color++) {
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for (b = 0, sptr = (char **) color; b <= NKEYS; b++, sptr++)
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if (*sptr)
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XpmFree(*sptr);
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}
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XpmFree(colorTable);
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}
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}
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/*
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* Free array of extensions
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*/
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void
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XpmFreeExtensions(
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XpmExtension *extensions,
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int nextensions)
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{
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unsigned int i, j, nlines;
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XpmExtension *ext;
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char **sptr;
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if (extensions && nextensions > 0) {
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for (i = 0, ext = extensions; i < nextensions; i++, ext++) {
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if (ext->name)
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XpmFree(ext->name);
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nlines = ext->nlines;
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for (j = 0, sptr = ext->lines; j < nlines; j++, sptr++)
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if (sptr && *sptr)
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XpmFree(*sptr);
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if (ext->lines)
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XpmFree(ext->lines);
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}
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XpmFree(extensions);
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}
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}
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/*
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* Return the XpmAttributes structure size
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*/
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int
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XpmAttributesSize(void)
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{
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return sizeof(XpmAttributes);
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}
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/*
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* Init returned data to free safely later on
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*/
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void
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xpmInitAttributes(XpmAttributes *attributes)
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{
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if (attributes) {
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attributes->pixels = NULL;
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attributes->npixels = 0;
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attributes->colorTable = NULL;
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attributes->ncolors = 0;
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/* 3.2 backward compatibility code */
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attributes->hints_cmt = NULL;
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attributes->colors_cmt = NULL;
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attributes->pixels_cmt = NULL;
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/* end 3.2 bc */
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if (attributes->valuemask & XpmReturnExtensions) {
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attributes->extensions = NULL;
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attributes->nextensions = 0;
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}
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if (attributes->valuemask & XpmReturnAllocPixels) {
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attributes->alloc_pixels = NULL;
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attributes->nalloc_pixels = 0;
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}
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}
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}
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/*
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* Fill in the XpmAttributes with the XpmImage and the XpmInfo
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*/
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void
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xpmSetAttributes(
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XpmAttributes *attributes,
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XpmImage *image,
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XpmInfo *info)
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{
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if (attributes->valuemask & XpmReturnColorTable) {
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attributes->colorTable = image->colorTable;
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attributes->ncolors = image->ncolors;
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/* avoid deletion of copied data */
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image->ncolors = 0;
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image->colorTable = NULL;
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}
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/* 3.2 backward compatibility code */
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else if (attributes->valuemask & XpmReturnInfos) {
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int ErrorStatus;
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ErrorStatus = CreateOldColorTable(image->colorTable, image->ncolors,
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(XpmColor ***)
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&attributes->colorTable);
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/* if error just say we can't return requested data */
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if (ErrorStatus != XpmSuccess) {
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attributes->valuemask &= ~XpmReturnInfos;
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if (!(attributes->valuemask & XpmReturnPixels)) {
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XpmFree(attributes->pixels);
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attributes->pixels = NULL;
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attributes->npixels = 0;
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}
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attributes->ncolors = 0;
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} else {
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attributes->ncolors = image->ncolors;
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attributes->hints_cmt = info->hints_cmt;
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attributes->colors_cmt = info->colors_cmt;
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attributes->pixels_cmt = info->pixels_cmt;
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/* avoid deletion of copied data */
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image->ncolors = 0;
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image->colorTable = NULL;
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info->hints_cmt = NULL;
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info->colors_cmt = NULL;
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info->pixels_cmt = NULL;
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}
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}
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/* end 3.2 bc */
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if (attributes->valuemask & XpmReturnExtensions) {
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attributes->extensions = info->extensions;
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attributes->nextensions = info->nextensions;
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/* avoid deletion of copied data */
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info->extensions = NULL;
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info->nextensions = 0;
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}
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if (info->valuemask & XpmHotspot) {
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attributes->valuemask |= XpmHotspot;
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attributes->x_hotspot = info->x_hotspot;
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attributes->y_hotspot = info->y_hotspot;
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}
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attributes->valuemask |= XpmCharsPerPixel;
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attributes->cpp = image->cpp;
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attributes->valuemask |= XpmSize;
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attributes->width = image->width;
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attributes->height = image->height;
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}
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/*
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* Free the XpmAttributes structure members
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* but the structure itself
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*/
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void
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XpmFreeAttributes(XpmAttributes *attributes)
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{
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if (attributes->valuemask & XpmReturnPixels && attributes->npixels) {
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XpmFree(attributes->pixels);
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attributes->pixels = NULL;
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attributes->npixels = 0;
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}
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if (attributes->valuemask & XpmReturnColorTable) {
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xpmFreeColorTable(attributes->colorTable, attributes->ncolors);
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attributes->colorTable = NULL;
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attributes->ncolors = 0;
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}
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/* 3.2 backward compatibility code */
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else if (attributes->valuemask & XpmInfos) {
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if (attributes->colorTable) {
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FreeOldColorTable((XpmColor **) attributes->colorTable,
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attributes->ncolors);
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attributes->colorTable = NULL;
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attributes->ncolors = 0;
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}
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if (attributes->hints_cmt) {
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XpmFree(attributes->hints_cmt);
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attributes->hints_cmt = NULL;
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}
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if (attributes->colors_cmt) {
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XpmFree(attributes->colors_cmt);
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attributes->colors_cmt = NULL;
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}
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if (attributes->pixels_cmt) {
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XpmFree(attributes->pixels_cmt);
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attributes->pixels_cmt = NULL;
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}
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if (attributes->pixels) {
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XpmFree(attributes->pixels);
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attributes->pixels = NULL;
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attributes->npixels = 0;
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}
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}
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/* end 3.2 bc */
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if (attributes->valuemask & XpmReturnExtensions
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&& attributes->nextensions) {
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XpmFreeExtensions(attributes->extensions, attributes->nextensions);
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attributes->extensions = NULL;
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attributes->nextensions = 0;
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}
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if (attributes->valuemask & XpmReturnAllocPixels
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&& attributes->nalloc_pixels) {
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XpmFree(attributes->alloc_pixels);
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attributes->alloc_pixels = NULL;
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attributes->nalloc_pixels = 0;
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}
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attributes->valuemask = 0;
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}
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