wmaker/wrlib/view.c

#include <X11/Xlib.h>
#include "wraster.h"
#include <stdlib.h>
#include <stdio.h>
#include "tile.xpm"
Display *dpy;
Window win;
RContext *ctx;
RImage *img;
Pixmap pix;



int
main(int argc, char **argv)
{
    RContextAttributes attr;

    dpy = XOpenDisplay("");
    if (!dpy) {
        puts("cant open display");
        exit(1);
    }

    attr.flags = RC_RenderMode | RC_ColorsPerChannel;
    attr.render_mode = RDitheredRendering;
    attr.colors_per_channel = 4;
    ctx = RCreateContext(dpy, DefaultScreen(dpy), &attr);

    if (argc<2)
        img = RGetImageFromXPMData(ctx, image_name);
    else
        img = RLoadImage(ctx, argv[1], 0);

    if (!img) {
        puts(RMessageForError(RErrorCode));
        exit(1);
    }

    if (argc > 2) {
        RImage *tmp = img;

        img = RScaleImage(tmp, tmp->width*atol(argv[2]),
                          tmp->height*atol(argv[2]));
        /*img = RSmoothScaleImage(tmp, tmp->width*atol(argv[2]),
         tmp->height*atol(argv[2]));
         */

        RReleaseImage(tmp);
    }

#if 0
    if (argc > 2) {
        img = RScaleImage(img, img->width*atof(argv[2]),
                          img->height*atof(argv[2]));
    }

    {
        RImage *tmp = RCreateImage(200, 200, True);
        RColor col = {0,0,255,255};

        if (img->format == RRGBAFormat)
            puts("alpha");
        else
            puts("no alpha");

        RClearImage(tmp, &col);

        RCombineArea(tmp, img, 0, 0, 20, 20, 10, 10);
        img = tmp;
    }
#endif

    if (!RConvertImage(ctx, img, &pix)) {
        puts(RMessageForError(RErrorCode));
        exit(1);
    }

    printf("%ix%i\n", img->width, img->height);



    win = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 10, 10,
                              img->width, img->height, 0, 0, 0);
    XSetWindowBackgroundPixmap(dpy, win, pix);
    XClearWindow(dpy, win);
    XMapRaised(dpy, win);
    XFlush(dpy);
    getchar();

    return 0;
}