X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Fblitspin.c;h=ec31aa09875d8fe41326f4c2c37e8c66b6cb4147;hb=a94197e76a5dea5cb60542840809d6c20d0abbf3;hp=df7ce8aeeb840bc6aeb188ea38a4bfcbd74603e2;hpb=0cac953ce8d5139c1a264b417951ee15a3176b51;p=xscreensaver diff --git a/hacks/blitspin.c b/hacks/blitspin.c index df7ce8ae..ec31aa09 100644 --- a/hacks/blitspin.c +++ b/hacks/blitspin.c @@ -1,4 +1,4 @@ -/* xscreensaver, Copyright (c) 1992 Jamie Zawinski +/* xscreensaver, Copyright (c) 1992-1997 Jamie Zawinski * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that @@ -25,18 +25,10 @@ */ #include "screenhack.h" +#include "xpm-pixmap.h" #include -#ifdef HAVE_XPM -# include -# ifndef PIXEL_ALREADY_TYPEDEFED -# define PIXEL_ALREADY_TYPEDEFED /* Sigh, Xmu/Drawing.h needs this... */ -# endif -#endif - -#include - -#include "default.xbm" +#include "images/som.xbm" static Display *dpy; static Window window; @@ -49,7 +41,7 @@ static Pixmap bitmap; static int depth; static unsigned int fg, bg; -static void rotate(), init (), display (); +static void display (Pixmap); #define copy_all_to(from, xoff, yoff, to, gc) \ XCopyArea (dpy, (from), (to), (gc), 0, 0, \ @@ -60,7 +52,7 @@ static void rotate(), init (), display (); size-(xoff), size-(yoff), 0, 0) static void -rotate () +rotate (void) { int qwad; /* fuckin' C, man... who needs namespaces? */ XFillRectangle (dpy, mask, CLR, 0, 0, size, size); @@ -87,72 +79,58 @@ rotate () } } -static void -read_bitmap (bitmap_name, widthP, heightP) - char *bitmap_name; - int *widthP, *heightP; +static Pixmap +read_screen (Display *dpy, Window window, int *widthP, int *heightP) { -#ifdef HAVE_XPM - XpmAttributes xpmattrs; - int result; - xpmattrs.valuemask = 0; - bitmap = 0; - result = XpmReadFileToPixmap (dpy, window, bitmap_name, &bitmap, 0, - &xpmattrs); - switch (result) - { - case XpmColorError: - fprintf (stderr, "%s: warning: xpm color substitution performed\n", - progname); - /* fall through */ - case XpmSuccess: - *widthP = xpmattrs.width; - *heightP = xpmattrs.height; - break; - case XpmFileInvalid: - case XpmOpenFailed: - bitmap = 0; - break; - case XpmColorFailed: - fprintf (stderr, "%s: xpm: color allocation failed\n", progname); - exit (-1); - case XpmNoMemory: - fprintf (stderr, "%s: xpm: out of memory\n", progname); - exit (-1); - default: - fprintf (stderr, "%s: xpm: unknown error code %d\n", progname, result); - exit (-1); - } - if (! bitmap) -#endif - { - int xh, yh; - Pixmap b2; - bitmap = XmuLocateBitmapFile (DefaultScreenOfDisplay (dpy), bitmap_name, - 0, 0, widthP, heightP, &xh, &yh); - if (! bitmap) - { - fprintf (stderr, "%s: couldn't find bitmap %s\n", progname, - bitmap_name); - exit (1); - } - b2 = XmuCreatePixmapFromBitmap (dpy, window, bitmap, *widthP, *heightP, - depth, fg, bg); - XFreePixmap (dpy, bitmap); - bitmap = b2; - } + Pixmap p; + XWindowAttributes xgwa; + XGCValues gcv; + GC gc; + XGetWindowAttributes (dpy, window, &xgwa); + *widthP = xgwa.width; + *heightP = xgwa.height; + + grab_screen_image(xgwa.screen, window); + p = XCreatePixmap(dpy, window, *widthP, *heightP, xgwa.depth); + gcv.function = GXcopy; + gc = XCreateGC (dpy, window, GCFunction, &gcv); + XCopyArea (dpy, window, p, gc, 0, 0, *widthP, *heightP, 0, 0); + + /* Reset the window's background color... */ + XSetWindowBackground (dpy, window, + get_pixel_resource ("background", "Background", + dpy, xgwa.colormap)); + XCopyArea (dpy, p, window, gc, 0, 0, *widthP, *heightP, 0, 0); + XFreeGC (dpy, gc); + + return p; +} + + +static int +to_pow2(int n, Bool up) +{ + /* sizeof(Dimension) == 2. */ + int powers_of_2[] = { 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, + 2048, 4096, 8192, 16384, 32768, 65536 }; + int i = 0; + if (n > 65536) size = 65536; + while (n >= powers_of_2[i]) i++; + if (n == powers_of_2[i-1]) + return n; + else + return powers_of_2[up ? i : i-1]; } static void -init () +init (void) { XWindowAttributes xgwa; Colormap cmap; XGCValues gcv; int width, height; - unsigned int real_size; char *bitmap_name; - int i; + Bool scale_up; XGetWindowAttributes (dpy, window, &xgwa); cmap = xgwa.colormap; @@ -170,24 +148,34 @@ init () if (!strcmp (bitmap_name, "(default)")) { - width = logo_width; - height = logo_height; - bitmap = XCreatePixmapFromBitmapData (dpy, window, (char *) logo_bits, + width = som_width; + height = som_height; + bitmap = XCreatePixmapFromBitmapData (dpy, window, (char *) som_bits, width, height, fg, bg, depth); + scale_up = True; /* definitely. */ + } + else if (!strcmp (bitmap_name, "(screen)")) + { + bitmap = read_screen (dpy, window, &width, &height); + scale_up = True; /* maybe? */ } else { - read_bitmap (bitmap_name, &width, &height); + bitmap = xpm_file_to_pixmap (dpy, window, bitmap_name, + &width, &height, 0); + scale_up = True; /* probably? */ } - real_size = (width > height) ? width : height; + size = (width < height) ? height : width; /* make it square */ + size = to_pow2(size, scale_up); /* round up to power of 2 */ + { /* don't exceed screen size */ + int s = XScreenNumberOfScreen(xgwa.screen); + int w = to_pow2(XDisplayWidth(dpy, s), False); + int h = to_pow2(XDisplayHeight(dpy, s), False); + if (size > w) size = w; + if (size > h) size = h; + } - size = real_size; - /* semi-sleazy way of doing (setq size (expt 2 (ceiling (log size 2)))). */ - for (i = 31; i > 0; i--) - if (size & (1<>i)<<(i+1); self = XCreatePixmap (dpy, window, size, size, depth); temp = XCreatePixmap (dpy, window, size, size, depth); mask = XCreatePixmap (dpy, window, size, size, depth); @@ -207,11 +195,15 @@ init () XCopyArea (dpy, bitmap, self, CPY, 0, 0, width, height, (size - width)>>1, (size - height)>>1); + XFreePixmap(dpy, bitmap); + + display (self); + XSync(dpy, False); + screenhack_handle_events (dpy); } static void -display (pixmap) - Pixmap pixmap; +display (Pixmap pixmap) { XWindowAttributes xgwa; static int last_w = 0, last_h = 0; @@ -222,12 +214,10 @@ display (pixmap) last_w = xgwa.width; last_h = xgwa.height; } -#ifdef HAVE_XPM if (depth != 1) XCopyArea (dpy, pixmap, window, gc, 0, 0, size, size, (xgwa.width-size)>>1, (xgwa.height-size)>>1); else -#endif XCopyPlane (dpy, pixmap, window, gc, 0, 0, size, size, (xgwa.width-size)>>1, (xgwa.height-size)>>1, 1); /* @@ -235,39 +225,42 @@ display (pixmap) ((xgwa.width-size)>>1)-1, ((xgwa.height-size)>>1)-1, size+2, size+2); */ - XSync (dpy, True); + XSync (dpy, False); + screenhack_handle_events (dpy); } char *progclass = "BlitSpin"; char *defaults [] = { - "*background: black", - "*foreground: white", + ".background: black", + ".foreground: white", "*delay: 500000", "*delay2: 500000", "*bitmap: (default)", + "*geometry: 512x512", 0 }; XrmOptionDescRec options [] = { { "-delay", ".delay", XrmoptionSepArg, 0 }, { "-delay2", ".delay2", XrmoptionSepArg, 0 }, - { "-bitmap", ".bitmap", XrmoptionSepArg, 0 } + { "-bitmap", ".bitmap", XrmoptionSepArg, 0 }, + { "-grab-screen", ".bitmap", XrmoptionNoArg, "(screen)" }, + { 0, 0, 0, 0 } }; -int options_size = (sizeof (options) / sizeof (options[0])); void -screenhack (d, w) - Display *d; - Window w; +screenhack (Display *d, Window w) { dpy = d; window = w; init (); + if (delay2) usleep (delay2 * 2); while (1) { rotate (); + screenhack_handle_events (d); if (delay2) usleep (delay2); } }