1 /* xscreensaver, Copyright (c) 2001-2002 Jamie Zawinski <jwz@jwz.org>
3 * Permission to use, copy, modify, distribute, and sell this software and its
4 * documentation for any purpose is hereby granted without fee, provided that
5 * the above copyright notice appear in all copies and that both that
6 * copyright notice and this permission notice appear in supporting
7 * documentation. No representations are made about the suitability of this
8 * software for any purpose. It is provided "as is" without express or
12 /* XScreenSaver Logo designed by Angela Goodman <rzr_grl@yahoo.com>
15 /* I basically implemented libXPM here, because I don't want the
16 xscreensaver daemon to depend on libXPM for two reasons: first,
17 because I want the logo to show up even if libXPM is not installed
18 on the system; and second, I don't want to have to security-audit
19 libXPM. The fewer libraries that are linked into the xscreensaver
20 daemon, the more likely to be secure it is.
23 /* If you are looking in here because you're trying to figure out how to
24 change the logo that xscreensaver displays on the splash screen and
25 password dialog, please don't. The logo is xscreensaver's identity.
26 You wouldn't alter the name or copyright notice on a program that
27 you didn't write; please don't alter its logo either.
31 #include "resources.h"
35 #include <X11/Xutil.h>
37 #include "images/logo-50.xpm"
38 #include "images/logo-180.xpm"
40 static const char hex[128] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
41 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
42 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
43 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0,
44 0, 10,11,12,13,14,15,0, 0, 0, 0, 0, 0, 0, 0, 0,
45 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
46 0, 10,11,12,13,14,15,0, 0, 0, 0, 0, 0, 0, 0, 0,
47 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
50 parse_xpm_data (Display *dpy, Visual *visual, Colormap colormap, int depth,
51 unsigned long transparent_color,
52 unsigned const char * const * data,
53 int *width_ret, int *height_ret,
54 unsigned long **pixels_ret, int *npixels_ret,
55 unsigned char **mask_ret)
57 int w, w8, h, ncolors, nbytes;
62 int cr; int cg; int cb;
63 int mr; int mg; int mb;
65 unsigned char rmap[256];
67 unsigned long *pixels;
70 if (4 != sscanf ((const char *) *data,
71 "%d %d %d %d %c", &w, &h, &ncolors, &nbytes, &c))
73 if (ncolors < 1 || ncolors > 255)
84 *mask_ret = (unsigned char *) malloc (s);
88 memset (*mask_ret, 255, s);
91 for (i = 0; i < ncolors; i++)
93 const unsigned char *line = *data;
94 cmap[i].byte = *line++;
99 while (*line == ' ' || *line == '\t')
102 if (which != 'c' && which != 'm')
104 while (*line == ' ' || *line == '\t')
106 if (!strncasecmp(line, "None", 4))
115 r = (hex[(int) line[0]] << 4) | hex[(int) line[1]]; line += 2;
116 g = (hex[(int) line[0]] << 4) | hex[(int) line[1]]; line += 2;
117 b = (hex[(int) line[0]] << 4) | hex[(int) line[1]]; line += 2;
137 if (depth == 1) transparent_color = 1;
139 pixels = (unsigned long *) calloc (ncolors+1, sizeof(*pixels));
141 for (i = 0; i < ncolors; i++)
143 if (cmap[i].cr == -1) /* transparent */
145 rmap[(int) cmap[i].byte] = 255;
150 color.flags = DoRed|DoGreen|DoBlue;
151 color.red = (cmap[i].cr << 8) | cmap[i].cr;
152 color.green = (cmap[i].cg << 8) | cmap[i].cg;
153 color.blue = (cmap[i].cb << 8) | cmap[i].cb;
155 !XAllocColor (dpy, colormap, &color))
157 color.red = (cmap[i].mr << 8) | cmap[i].mr;
158 color.green = (cmap[i].mg << 8) | cmap[i].mg;
159 color.blue = (cmap[i].mb << 8) | cmap[i].mb;
160 if (!XAllocColor (dpy, colormap, &color))
163 pixels[pixel_count] = color.pixel;
164 rmap[(int) cmap[i].byte] = pixel_count;
169 ximage = XCreateImage (dpy, visual, depth,
170 (depth == 1 ? XYBitmap : ZPixmap),
175 ximage->data = (char *) calloc (ximage->height, ximage->bytes_per_line);
176 for (y = 0; y < h; y++)
178 const unsigned char *line = *data++;
179 for (x = 0; x < w; x++)
181 int p = rmap[*line++];
182 XPutPixel (ximage, x, y,
183 (p == 255 ? transparent_color : pixels[p]));
185 if (p == 255 && mask_ret)
186 (*mask_ret)[(y * w8) + (x >> 3)] &= (~(1 << (x % 8)));
193 *pixels_ret = pixels;
194 *npixels_ret = pixel_count;
200 /* Returns a pixmap of the xscreensaver logo.
203 xscreensaver_logo (Screen *screen, Visual *visual,
204 Drawable drawable, Colormap cmap,
205 unsigned long background_color,
206 unsigned long **pixels_ret, int *npixels_ret,
210 Display *dpy = DisplayOfScreen (screen);
211 int depth = visual_depth (screen, visual);
215 unsigned char *mask = 0;
217 image = parse_xpm_data (dpy, visual, cmap, depth, background_color,
218 (big_p ? logo_180_xpm : logo_50_xpm),
219 &iw, &ih, pixels_ret, npixels_ret,
220 (mask_ret ? &mask : 0));
226 p = XCreatePixmap (dpy, drawable, iw, ih, depth);
227 gc = XCreateGC (dpy, p, 0, &gcv);
228 XPutImage (dpy, p, gc, image, 0, 0, 0, 0, iw, ih);
231 XDestroyImage (image);
234 if (mask_ret && mask)
237 XCreatePixmapFromBitmapData (dpy, drawable, (char *) mask,