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IABSD.fr/xenocara/lib/libXpm/src/Attrib.c
matthieu
- lib/libXpm/src/Attrib.c
-
/* * Copyright (C) 1989-95 GROUPE BULL * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * 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 * GROUPE BULL 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 GROUPE BULL shall not be * used in advertising or otherwise to promote the sale, use or other dealings * in this Software without prior written authorization from GROUPE BULL. */ /*****************************************************************************\ * Attrib.c: * * * * XPM library * * Functions related to the XpmAttributes structure * * * * Developed by Arnaud Le Hors * \*****************************************************************************/ /* October 2004, source code review by Thomas Biege <thomas@suse.de> */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "XpmI.h" /* 3.2 backward compatibility code */ LFUNC(CreateOldColorTable, int, (XpmColor *ct, unsigned int ncolors, XpmColor ***oldct)); LFUNC(FreeOldColorTable, void, (XpmColor **colorTable, unsigned int ncolors)); /* * Create a colortable compatible with the old style colortable */ static int CreateOldColorTable(ct, ncolors, oldct) XpmColor *ct; unsigned int ncolors; XpmColor ***oldct; { XpmColor **colorTable, **color; unsigned int a; if (ncolors >= UINT_MAX / sizeof(XpmColor *)) return XpmNoMemory; colorTable = (XpmColor **) XpmMalloc(ncolors * sizeof(XpmColor *)); if (!colorTable) { *oldct = NULL; return (XpmNoMemory); } for (a = 0, color = colorTable; a < ncolors; a++, color++, ct++) *color = ct; *oldct = colorTable; return (XpmSuccess); } static void FreeOldColorTable(colorTable, ncolors) XpmColor **colorTable; unsigned int ncolors; { unsigned int a, b; XpmColor **color; char **sptr; if (colorTable) { for (a = 0, color = colorTable; a < ncolors; a++, color++) { for (b = 0, sptr = (char **) *color; b <= NKEYS; b++, sptr++) if (*sptr) XpmFree(*sptr); } XpmFree(*colorTable); XpmFree(colorTable); } } /* end 3.2 bc */ /* * Free the computed color table */ void xpmFreeColorTable(colorTable, ncolors) XpmColor *colorTable; int ncolors; { int a, b; XpmColor *color; char **sptr; if (colorTable) { for (a = 0, color = colorTable; a < ncolors; a++, color++) { for (b = 0, sptr = (char **) color; b <= NKEYS; b++, sptr++) if (*sptr) XpmFree(*sptr); } XpmFree(colorTable); } } /* * Free array of extensions */ void XpmFreeExtensions(extensions, nextensions) XpmExtension *extensions; int nextensions; { unsigned int i, j, nlines; XpmExtension *ext; char **sptr; if (extensions && nextensions > 0) { for (i = 0, ext = extensions; i < nextensions; i++, ext++) { if (ext->name) XpmFree(ext->name); nlines = ext->nlines; for (j = 0, sptr = ext->lines; j < nlines; j++, sptr++) if (sptr && *sptr) XpmFree(*sptr); if (ext->lines) XpmFree(ext->lines); } XpmFree(extensions); } } /* * Return the XpmAttributes structure size */ int XpmAttributesSize() { return sizeof(XpmAttributes); } /* * Init returned data to free safely later on */ void xpmInitAttributes(attributes) XpmAttributes *attributes; { if (attributes) { attributes->pixels = NULL; attributes->npixels = 0; attributes->colorTable = NULL; attributes->ncolors = 0; /* 3.2 backward compatibility code */ attributes->hints_cmt = NULL; attributes->colors_cmt = NULL; attributes->pixels_cmt = NULL; /* end 3.2 bc */ if (attributes->valuemask & XpmReturnExtensions) { attributes->extensions = NULL; attributes->nextensions = 0; } if (attributes->valuemask & XpmReturnAllocPixels) { attributes->alloc_pixels = NULL; attributes->nalloc_pixels = 0; } } } /* * Fill in the XpmAttributes with the XpmImage and the XpmInfo */ void xpmSetAttributes(attributes, image, info) XpmAttributes *attributes; XpmImage *image; XpmInfo *info; { if (attributes->valuemask & XpmReturnColorTable) { attributes->colorTable = image->colorTable; attributes->ncolors = image->ncolors; /* avoid deletion of copied data */ image->ncolors = 0; image->colorTable = NULL; } /* 3.2 backward compatibility code */ else if (attributes->valuemask & XpmReturnInfos) { int ErrorStatus; ErrorStatus = CreateOldColorTable(image->colorTable, image->ncolors, (XpmColor ***) &attributes->colorTable); /* if error just say we can't return requested data */ if (ErrorStatus != XpmSuccess) { attributes->valuemask &= ~XpmReturnInfos; if (!(attributes->valuemask & XpmReturnPixels)) { XpmFree(attributes->pixels); attributes->pixels = NULL; attributes->npixels = 0; } attributes->ncolors = 0; } else { attributes->ncolors = image->ncolors; attributes->hints_cmt = info->hints_cmt; attributes->colors_cmt = info->colors_cmt; attributes->pixels_cmt = info->pixels_cmt; /* avoid deletion of copied data */ image->ncolors = 0; image->colorTable = NULL; info->hints_cmt = NULL; info->colors_cmt = NULL; info->pixels_cmt = NULL; } } /* end 3.2 bc */ if (attributes->valuemask & XpmReturnExtensions) { attributes->extensions = info->extensions; attributes->nextensions = info->nextensions; /* avoid deletion of copied data */ info->extensions = NULL; info->nextensions = 0; } if (info->valuemask & XpmHotspot) { attributes->valuemask |= XpmHotspot; attributes->x_hotspot = info->x_hotspot; attributes->y_hotspot = info->y_hotspot; } attributes->valuemask |= XpmCharsPerPixel; attributes->cpp = image->cpp; attributes->valuemask |= XpmSize; attributes->width = image->width; attributes->height = image->height; } /* * Free the XpmAttributes structure members * but the structure itself */ void XpmFreeAttributes(attributes) XpmAttributes *attributes; { if (attributes->valuemask & XpmReturnPixels && attributes->npixels) { XpmFree(attributes->pixels); attributes->pixels = NULL; attributes->npixels = 0; } if (attributes->valuemask & XpmReturnColorTable) { xpmFreeColorTable(attributes->colorTable, attributes->ncolors); attributes->colorTable = NULL; attributes->ncolors = 0; } /* 3.2 backward compatibility code */ else if (attributes->valuemask & XpmInfos) { if (attributes->colorTable) { FreeOldColorTable((XpmColor **) attributes->colorTable, attributes->ncolors); attributes->colorTable = NULL; attributes->ncolors = 0; } if (attributes->hints_cmt) { XpmFree(attributes->hints_cmt); attributes->hints_cmt = NULL; } if (attributes->colors_cmt) { XpmFree(attributes->colors_cmt); attributes->colors_cmt = NULL; } if (attributes->pixels_cmt) { XpmFree(attributes->pixels_cmt); attributes->pixels_cmt = NULL; } if (attributes->pixels) { XpmFree(attributes->pixels); attributes->pixels = NULL; attributes->npixels = 0; } } /* end 3.2 bc */ if (attributes->valuemask & XpmReturnExtensions && attributes->nextensions) { XpmFreeExtensions(attributes->extensions, attributes->nextensions); attributes->extensions = NULL; attributes->nextensions = 0; } if (attributes->valuemask & XpmReturnAllocPixels && attributes->nalloc_pixels) { XpmFree(attributes->alloc_pixels); attributes->alloc_pixels = NULL; attributes->nalloc_pixels = 0; } attributes->valuemask = 0; }