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Diffstat (limited to 'libXpm/src/simx.c')
| -rw-r--r-- | libXpm/src/simx.c | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/libXpm/src/simx.c b/libXpm/src/simx.c new file mode 100644 index 000000000..97b3b5f03 --- /dev/null +++ b/libXpm/src/simx.c @@ -0,0 +1,293 @@ +/* + * 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. + */ + +/*****************************************************************************\ +* simx.c: 0.1a * +* * +* This emulates some Xlib functionality for MSW. It's not a general solution, * +* it is close related to XPM-lib. It is only intended to satisfy what is need * +* there. Thus allowing to read XPM files under MS windows. * +* * +* Developed by HeDu 3/94 (hedu@cul-ipn.uni-kiel.de) * +\*****************************************************************************/ + +#ifdef FOR_MSW + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "xpm.h" +#include "xpmi.h" /* for XpmMalloc */ + +/* + * On DOS size_t is only 2 bytes, thus malloc(size_t s) can only malloc + * 64K. BUT an expression data=malloc(width*height) may result in an + * overflow. So this function takes a long as input, and returns NULL if the + * request is larger than 64K, is size_t is only 2 bytes. + * + * This requires casts like XpmMalloc( (long)width*(long(height)), else it + * might have no effect at all. + */ + +void * +boundCheckingMalloc(long s) +{ + if (sizeof(size_t) == sizeof(long)) { /* same size, just do it */ + return (malloc((size_t) s)); + } else { + if (sizeof(size_t) == 2) { + if (s > 0xFFFF) + return (NULL); /* to large, size_t with 2 bytes + * only allows 16 bits */ + else + return (malloc((size_t) s)); + } else { /* it's not a long, not 2 bytes, + * what is it ??? */ + return (malloc((size_t) s)); + } + } +} +void * +boundCheckingCalloc(long num, long s) +{ + if (sizeof(size_t) == sizeof(long)) { /* same size, just do it */ + return (calloc((size_t) num, (size_t) s)); + } else { + if (sizeof(size_t) == 2) { + if (s > 0xFFFF || num * s > 0xFFFF) + return (NULL); /* to large, size_t with 2 bytes + * only allows 16 bits */ + else + return (calloc((size_t) num, (size_t) s)); + } else { /* it's not a long, not 2 bytes, + * what is it ??? */ + return (calloc((size_t) num, (size_t) s)); + } + } +} +void * +boundCheckingRealloc(void *p, long s) +{ + if (sizeof(size_t) == sizeof(long)) { /* same size, just do it */ + return (realloc(p, (size_t) s)); + } else { + if (sizeof(size_t) == 2) { + if (s > 0xFFFF) + return (NULL); /* to large, size_t with 2 bytes + * only allows 16 bits */ + else + return (realloc(p, (size_t) s)); + } else { /* it's not a long, not 2 bytes, + * what is it ??? */ + return (realloc(p, (size_t) s)); + } + } +} + +/* static Visual theVisual = { 0 }; */ +Visual * +XDefaultVisual(Display *display, Screen *screen) +{ + return (NULL); /* struct could contain info about + * MONO, GRAY, COLOR */ +} + +Screen * +XDefaultScreen(Display *d) +{ + return (NULL); +} + +/* I get only 1 plane but 8 bits per pixel, + so I think BITSPIXEL should be depth */ +int +XDefaultDepth(Display *display, Screen *screen) +{ + int d, b; + + b = GetDeviceCaps(*display, BITSPIXEL); + d = GetDeviceCaps(*display, PLANES); + return (b); +} + +Colormap * +XDefaultColormap(Display *display, Screen *screen) +{ + return (NULL); +} + +/* convert hex color names, + wrong digits (not a-f,A-F,0-9) are treated as zero */ +static int +hexCharToInt(c) +{ + int r; + + if (c >= '0' && c <= '9') + r = c - '0'; + else if (c >= 'a' && c <= 'f') + r = c - 'a' + 10; + else if (c >= 'A' && c <= 'F') + r = c - 'A' + 10; + else + r = 0; + + return (r); +} + +static int +rgbFromHex(char *hex, int *r, int *g, int *b) +{ + int len; + + if (hex == NULL || hex[0] != '#') + return (0); + + len = strlen(hex); + if (len == 3 + 1) { + *r = hexCharToInt(hex[1]); + *g = hexCharToInt(hex[2]); + *b = hexCharToInt(hex[3]); + } else if (len == 6 + 1) { + *r = hexCharToInt(hex[1]) * 16 + hexCharToInt(hex[2]); + *g = hexCharToInt(hex[3]) * 16 + hexCharToInt(hex[4]); + *b = hexCharToInt(hex[5]) * 16 + hexCharToInt(hex[6]); + } else if (len == 12 + 1) { + /* it's like c #32329999CCCC */ + /* so for now only take two digits */ + *r = hexCharToInt(hex[1]) * 16 + hexCharToInt(hex[2]); + *g = hexCharToInt(hex[5]) * 16 + hexCharToInt(hex[6]); + *b = hexCharToInt(hex[9]) * 16 + hexCharToInt(hex[10]); + } else + return (0); + + return (1); +} + +/* Color related functions */ +int +XParseColor(Display *d, Colormap *cmap, char *name, XColor *color) +{ + int r, g, b; /* only 8 bit values used */ + int okay; + +/* TODO: use colormap via PALETTE */ + /* parse name either in table or #RRGGBB #RGB */ + if (name == NULL) + return (0); + + if (name[0] == '#') { /* a hex string */ + okay = rgbFromHex(name, &r, &g, &b); + } else { + okay = xpmGetRGBfromName(name, &r, &g, &b); + } + + if (okay) { + color->pixel = RGB(r, g, b); + color->red = (BYTE) r; + color->green = (BYTE) g; + color->blue = (BYTE) b; + return (1); + } else + return (0); /* --> ColorError */ +} + + +int +XAllocColor(Display *d, Colormap cmap, XColor *color) +{ +/* colormap not used yet so color->pixel is the real COLORREF (RBG) and not an + index in some colormap as in X */ + return (1); +} +void +XQueryColors(Display *display, Colormap *colormap, + XColor *xcolors, int ncolors) +{ +/* under X this fills the rgb values to given .pixel */ +/* since there no colormap use FOR_MSW (not yet!!), rgb is plain encoded */ + XColor *xc = xcolors; + int i; + + for (i = 0; i < ncolors; i++, xc++) { + xc->red = GetRValue(xc->pixel); + xc->green = GetGValue(xc->pixel); + xc->blue = GetBValue(xc->pixel); + } + return; +} +int +XFreeColors(Display *d, Colormap cmap, + unsigned long pixels[], int npixels, unsigned long planes) +{ + /* no colormap yet */ + return (0); /* correct ??? */ +} + +/* XImage functions */ +XImage * +XCreateImage(Display *d, Visual *v, + int depth, int format, + int x, int y, int width, int height, + int pad, int foo) +{ + XImage *img = (XImage *) XpmMalloc(sizeof(XImage)); + + if (img) { + /*JW: This is what it should be, but the picture comes out + just black!? It appears to be doing monochrome reduction, + but I've got no clue why. Using CreateBitmap() is supposed + to be slower, but otherwise ok + if ( depth == GetDeviceCaps(*d, BITSPIXEL) ) { + img->bitmap = CreateCompatibleBitmap(*d, width, height); + } else*/ { + img->bitmap = CreateBitmap(width, height, 1 /* plane */ , + depth /* bits per pixel */ , NULL); + } + img->width = width; + img->height = height; + img->depth = depth; + } + return (img); + +} + +void +XImageFree(XImage *img) +{ + if (img) { + XpmFree(img); + } +} +void +XDestroyImage(XImage *img) +{ + if (img) { + DeleteObject(img->bitmap); /* check return ??? */ + XImageFree(img); + } +} + +#endif |