2 * Copyright (C) 1989-95 GROUPE BULL
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to
6 * deal in the Software without restriction, including without limitation the
7 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
8 * sell copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21 * Except as contained in this notice, the name of GROUPE BULL shall not be
22 * used in advertising or otherwise to promote the sale, use or other dealings
23 * in this Software without prior written authorization from GROUPE BULL.
26 /*****************************************************************************\
29 * This emulates some Xlib functionality for MSW. It's not a general solution, *
30 * it is close related to XPM-lib. It is only intended to satisfy what is need *
31 * there. Thus allowing to read XPM files under MS windows. *
33 * Developed by HeDu 3/94 (hedu@cul-ipn.uni-kiel.de) *
34 \*****************************************************************************/
42 #include "xpmi.h" /* for XpmMalloc */
45 * On DOS size_t is only 2 bytes, thus malloc(size_t s) can only malloc
46 * 64K. BUT an expression data=malloc(width*height) may result in an
47 * overflow. So this function takes a long as input, and returns NULL if the
48 * request is larger than 64K, is size_t is only 2 bytes.
50 * This requires casts like XpmMalloc( (long)width*(long(height)), else it
51 * might have no effect at all.
55 boundCheckingMalloc(long s)
57 if (sizeof(size_t) == sizeof(long)) { /* same size, just do it */
58 return (malloc((size_t) s));
60 if (sizeof(size_t) == 2) {
62 return (NULL); /* to large, size_t with 2 bytes
63 * only allows 16 bits */
65 return (malloc((size_t) s));
66 } else { /* it's not a long, not 2 bytes,
68 return (malloc((size_t) s));
73 boundCheckingCalloc(long num, long s)
75 if (sizeof(size_t) == sizeof(long)) { /* same size, just do it */
76 return (calloc((size_t) num, (size_t) s));
78 if (sizeof(size_t) == 2) {
79 if (s > 0xFFFF || num * s > 0xFFFF)
80 return (NULL); /* to large, size_t with 2 bytes
81 * only allows 16 bits */
83 return (calloc((size_t) num, (size_t) s));
84 } else { /* it's not a long, not 2 bytes,
86 return (calloc((size_t) num, (size_t) s));
91 boundCheckingRealloc(void *p, long s)
93 if (sizeof(size_t) == sizeof(long)) { /* same size, just do it */
94 return (realloc(p, (size_t) s));
96 if (sizeof(size_t) == 2) {
98 return (NULL); /* to large, size_t with 2 bytes
99 * only allows 16 bits */
101 return (realloc(p, (size_t) s));
102 } else { /* it's not a long, not 2 bytes,
104 return (realloc(p, (size_t) s));
109 /* static Visual theVisual = { 0 }; */
111 XDefaultVisual(Display *display, Screen *screen)
113 return (NULL); /* struct could contain info about
114 * MONO, GRAY, COLOR */
118 XDefaultScreen(Display *d)
123 /* I get only 1 plane but 8 bits per pixel,
124 so I think BITSPIXEL should be depth */
126 XDefaultDepth(Display *display, Screen *screen)
130 b = GetDeviceCaps(*display, BITSPIXEL);
131 d = GetDeviceCaps(*display, PLANES);
136 XDefaultColormap(Display *display, Screen *screen)
141 /* convert hex color names,
142 wrong digits (not a-f,A-F,0-9) are treated as zero */
148 if (c >= '0' && c <= '9')
150 else if (c >= 'a' && c <= 'f')
152 else if (c >= 'A' && c <= 'F')
161 rgbFromHex(char *hex, int *r, int *g, int *b)
165 if (hex == NULL || hex[0] != '#')
170 *r = hexCharToInt(hex[1]);
171 *g = hexCharToInt(hex[2]);
172 *b = hexCharToInt(hex[3]);
173 } else if (len == 6 + 1) {
174 *r = hexCharToInt(hex[1]) * 16 + hexCharToInt(hex[2]);
175 *g = hexCharToInt(hex[3]) * 16 + hexCharToInt(hex[4]);
176 *b = hexCharToInt(hex[5]) * 16 + hexCharToInt(hex[6]);
177 } else if (len == 12 + 1) {
178 /* it's like c #32329999CCCC */
179 /* so for now only take two digits */
180 *r = hexCharToInt(hex[1]) * 16 + hexCharToInt(hex[2]);
181 *g = hexCharToInt(hex[5]) * 16 + hexCharToInt(hex[6]);
182 *b = hexCharToInt(hex[9]) * 16 + hexCharToInt(hex[10]);
189 /* Color related functions */
191 XParseColor(Display *d, Colormap *cmap, char *name, XColor *color)
193 int r, g, b; /* only 8 bit values used */
196 /* TODO: use colormap via PALETTE */
197 /* parse name either in table or #RRGGBB #RGB */
201 if (name[0] == '#') { /* a hex string */
202 okay = rgbFromHex(name, &r, &g, &b);
204 okay = xpmGetRGBfromName(name, &r, &g, &b);
208 color->pixel = RGB(r, g, b);
209 color->red = (BYTE) r;
210 color->green = (BYTE) g;
211 color->blue = (BYTE) b;
214 return (0); /* --> ColorError */
219 XAllocColor(Display *d, Colormap cmap, XColor *color)
221 /* colormap not used yet so color->pixel is the real COLORREF (RBG) and not an
222 index in some colormap as in X */
226 XQueryColors(Display *display, Colormap *colormap,
227 XColor *xcolors, int ncolors)
229 /* under X this fills the rgb values to given .pixel */
230 /* since there no colormap use FOR_MSW (not yet!!), rgb is plain encoded */
231 XColor *xc = xcolors;
234 for (i = 0; i < ncolors; i++, xc++) {
235 xc->red = GetRValue(xc->pixel);
236 xc->green = GetGValue(xc->pixel);
237 xc->blue = GetBValue(xc->pixel);
242 XFreeColors(Display *d, Colormap cmap,
243 unsigned long pixels[], int npixels, unsigned long planes)
245 /* no colormap yet */
246 return (0); /* correct ??? */
249 /* XImage functions */
251 XCreateImage(Display *d, Visual *v,
252 int depth, int format,
253 int x, int y, int width, int height,
256 XImage *img = (XImage *) XpmMalloc(sizeof(XImage));
259 /*JW: This is what it should be, but the picture comes out
260 just black!? It appears to be doing monochrome reduction,
261 but I've got no clue why. Using CreateBitmap() is supposed
262 to be slower, but otherwise ok
263 if ( depth == GetDeviceCaps(*d, BITSPIXEL) ) {
264 img->bitmap = CreateCompatibleBitmap(*d, width, height);
266 img->bitmap = CreateBitmap(width, height, 1 /* plane */ ,
267 depth /* bits per pixel */ , NULL);
270 img->height = height;
278 XImageFree(XImage *img)
285 XDestroyImage(XImage *img)
288 DeleteObject(img->bitmap); /* check return ??? */