wrlib/testrot.c

   1
   2
   3 #include <X11/Xlib.h>
   4 #include "wraster.h"
   5 #include <stdlib.h>
   6 #include <stdio.h>
   7 #include <unistd.h>
   8 #include "tile.xpm"
   9 Display *dpy;
  10 Window win;
  11 RContext *ctx;
  12 RImage *img;
  13 Pixmap pix;
  14
  15
  16 #define MAX(a,b) (a)>(b) ? (a) : (b)
  17
  18 int main(int argc, char **argv)
  19 {
  20     RContextAttributes attr;
  21     float a;
  22
  23     dpy = XOpenDisplay("");
  24     if (!dpy) {
  25         puts("cant open display");
  26         exit(1);
  27     }
  28
  29     attr.flags = RC_RenderMode | RC_ColorsPerChannel;
  30     attr.render_mode = RDitheredRendering;
  31     attr.colors_per_channel = 4;
  32     ctx = RCreateContext(dpy, DefaultScreen(dpy), &attr);
  33
  34     if (argc<2)
  35         img = RGetImageFromXPMData(ctx, image_name);
  36     else
  37         img = RLoadImage(ctx, argv[1], 0);
  38
  39     if (!img) {
  40         puts(RMessageForError(RErrorCode));
  41         exit(1);
  42     }
  43     win = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 10, 10,
  44                               MAX(img->width, img->height),
  45                               MAX(img->height, img->width), 0, 0, 0);
  46     XMapRaised(dpy, win);
  47     XFlush(dpy);
  48
  49     a = 0;
  50     while (1) {
  51         RImage *tmp;
  52
  53         a = a + 1.0;
  54
  55         tmp = RRotateImage(img, a);
  56         if (!RConvertImage(ctx, tmp, &pix)) {
  57             puts(RMessageForError(RErrorCode));
  58             exit(1);
  59         }
  60         RReleaseImage(tmp);
  61
  62         XSetWindowBackgroundPixmap(dpy, win, pix);
  63         XFreePixmap(dpy, pix);
  64         XClearWindow(dpy, win);
  65         XSync(dpy, 0);
  66         usleep(50000);
  67     }
  68     exit(0);
  69 }
  70