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/*
* x11_support.c
*
* Created by buzzert <buzzert@buzzert.net> 2019-01-18
*/
#include "x11_support.h"
#include <stdio.h>
#include <stdlib.h>
static Window __window = { 0 };
static Display *__display = NULL;
cairo_surface_t* x11_helper_acquire_cairo_surface(int width, int height)
{
__display = XOpenDisplay(NULL);
if (__display == NULL) {
fprintf(stderr, "Error opening display\n");
return NULL;
}
Window root_window = DefaultRootWindow(__display);
__window = XCreateSimpleWindow(
__display, // display
root_window, // parent window
0, 0, // x, y
width, // width
height, // height
0, // border_width
0, // border
0 // background
);
// Enable key events
XSelectInput(__display, __window, ButtonPressMask | KeyPressMask | StructureNotifyMask);
// Map window to display
XMapWindow(__display, __window);
// Create cairo surface
int screen = DefaultScreen(__display);
Visual *visual = DefaultVisual(__display, screen);
cairo_surface_t *surface = cairo_xlib_surface_create(
__display,
__window,
visual,
width,
height
);
return surface;
}
void x11_helper_destroy_surface(cairo_surface_t *surface)
{
cairo_surface_destroy(surface);
XCloseDisplay(__display);
}
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