wrlib/view.c

   1 #include <X11/Xlib.h>
   2 #include "wraster.h"
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include "tile.xpm"
   6 Display *dpy;
   7 Window win;
   8 RContext *ctx;
   9 RImage *img;
  10 Pixmap pix;
  11
  12
  13
  14 int main(int argc, char **argv)
  15 {
  16     RContextAttributes attr;
  17
  18     dpy = XOpenDisplay("");
  19     if (!dpy) {
  20         puts("cant open display");
  21         exit(1);
  22     }
  23
  24     attr.flags = RC_RenderMode | RC_ColorsPerChannel;
  25     attr.render_mode = RDitheredRendering;
  26     attr.colors_per_channel = 4;
  27     ctx = RCreateContext(dpy, DefaultScreen(dpy), &attr);
  28
  29     if (argc<2)
  30         img = RGetImageFromXPMData(ctx, image_name);
  31     else
  32         img = RLoadImage(ctx, argv[1], 0);
  33
  34     if (!img) {
  35         puts(RMessageForError(RErrorCode));
  36         exit(1);
  37     }
  38     /*
  39     if (argc > 2) {
  40         RImage *tmp = img;
  41
  42         img = RSmoothScaleImage(tmp, tmp->width*atol(argv[2]),
  43                                 tmp->height*atol(argv[2]));
  44         RDestroyImage(tmp);
  45     }
  46      */
  47 #if 1
  48     if (argc > 2) {
  49         img = RScaleImage(img, img->width*atof(argv[2]),
  50                           img->height*atof(argv[2]));
  51     }
  52
  53     {
  54         RImage *tmp = RCreateImage(200, 200, True);
  55         RColor col = {0,0,255,255};
  56
  57         if (img->format == RRGBAFormat)
  58             puts("aklpha");
  59         else
  60             puts("no alpha");
  61
  62         RClearImage(tmp, &col);
  63
  64         RCombineArea(tmp, img, 0, 0, 20, 20, 10, 10);
  65         img = tmp;
  66     }
  67 #endif
  68
  69     if (!RConvertImage(ctx, img, &pix)) {
  70         puts(RMessageForError(RErrorCode));
  71         exit(1);
  72     }
  73
  74     printf("%ix%i\n", img->width, img->height);
  75
  76
  77
  78     win = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 10, 10,
  79                               400, 400, 0, 0, 0);
  80     XSetWindowBackgroundPixmap(dpy, win, pix);
  81     XClearWindow(dpy, win);
  82     XMapRaised(dpy, win);
  83     XFlush(dpy);
  84     getchar();
  85     exit(0);
  86 }