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135 lines
2.8 KiB
135 lines
2.8 KiB
#include <X11/Xcms.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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Display*
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getDisplay() {
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/* Get a display to use */
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/* Currently just uses the default display */
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Display *display = XOpenDisplay(NULL);
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if (display == NULL) {
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fprintf(stderr, "Could not open the display! :(\n");
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exit(1);
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}
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return display;
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}
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XColor*
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getColor(Display *display,
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int screen,
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unsigned short red,
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unsigned short green,
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unsigned short blue) {
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/* Return a new XColor structure */
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/* Initialize it with RGB */
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XColor *xcolor = malloc(sizeof (XColor));
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xcolor->red = red;
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xcolor->green = green;
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xcolor->blue = blue;
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xcolor->flags = DoRed | DoGreen | DoBlue;
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XAllocColor(display,
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XDefaultColormap(display, screen),
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xcolor);
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return xcolor;
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}
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int
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main(void) {
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Window window;
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XEvent event;
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Display *display = getDisplay();
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int screen = DefaultScreen(display);
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GC gc = XDefaultGC(display, screen);
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XColor *xcolor = getColor(display, screen, 0xffff, 0xffff, 0xffff);
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window = XCreateSimpleWindow(display,
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RootWindow(display, screen),
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10,
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10,
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100,
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100,
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1,
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WhitePixel(display, screen),
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xcolor->pixel);
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XSelectInput(display,
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window,
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ExposureMask | KeyPressMask);
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XMapWindow(display, window);
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int depth = DefaultDepth(display, DefaultScreen(display));
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Pixmap pixmap;
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pixmap = XCreatePixmap(display,
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window,
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100,
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100,
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depth);
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int factor = 0;
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struct timespec req;
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struct timespec rem;
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req.tv_sec = 0;
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req.tv_nsec = 20000000;
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while (1) {
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/* Event loop that handles events from the X server's event queue */
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/* Will actually block if there are no events */
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XNextEvent(display, &event);
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if (event.type == Expose) {
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XColor *boxcolor = getColor(display, screen, 32000, 0, 32000);
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XSetForeground(display, gc, boxcolor->pixel);
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}
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//if (event.type == KeyPress) {
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//break;
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//}
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for(int x = 0; x < 100; x++) {
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for(int y = 0; y < 100; y++) {
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XDrawPoint(display, pixmap, gc, x, y);
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}
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}
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factor++;
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XClearWindow(display, window);
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XCopyArea(display,
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pixmap,
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window,
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gc,
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0,
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0,
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100,
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100,
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factor,
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factor);
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nanosleep(&req, &rem);
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}
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XCloseDisplay(display);
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return 0;
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}
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