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const std = @import("std");
const c = @import("c.zig");
pub fn main() !void {
var mask: u32 = 0;
var values: [3]u32 = undefined;
const string = "hello, XCB!";
var rectangles = [_]c.xcb_rectangle_t{
.{ .x = 40, .y = 40, .width = 20, .height = 20 },
};
const conn = c.xcb_connect(null, null) orelse return error.FailedToConnectToXServer;
defer c.xcb_disconnect(conn);
const screen: *c.xcb_screen_t = @ptrCast(c.xcb_setup_roots_iterator(c.xcb_get_setup(conn)).data);
const foreground = c.xcb_generate_id(conn);
mask = c.XCB_GC_FOREGROUND | c.XCB_GC_GRAPHICS_EXPOSURES;
values[0] = screen.black_pixel;
values[1] = 0;
_ = c.xcb_create_gc(conn, foreground, screen.root, mask, @ptrCast(&values));
const background = c.xcb_generate_id(conn);
mask = c.XCB_GC_BACKGROUND | c.XCB_GC_GRAPHICS_EXPOSURES;
values[0] = screen.white_pixel;
values[1] = 0;
_ = c.xcb_create_gc(conn, background, screen.root, mask, @ptrCast(&values));
const win = c.xcb_generate_id(conn);
mask = c.XCB_CW_BACK_PIXEL | c.XCB_CW_WIN_GRAVITY | c.XCB_CW_EVENT_MASK;
values[0] = screen.white_pixel;
values[1] = c.XCB_GRAVITY_NORTH_WEST;
values[2] = c.XCB_EVENT_MASK_EXPOSURE | c.XCB_EVENT_MASK_KEY_PRESS;
_ = c.xcb_create_window(conn, c.XCB_COPY_FROM_PARENT, win, screen.root, 0, 0, 150, 150, 0, c.XCB_WINDOW_CLASS_INPUT_OUTPUT, screen.root_visual, mask, @ptrCast(&values));
_ = c.xcb_map_window(conn, win);
_ = c.xcb_flush(conn);
while (true) {
const e = c.xcb_wait_for_event(conn) orelse break;
defer std.c.free(e);
switch (e.*.response_type & ~@as(u8, 0x80)) {
c.XCB_EXPOSE => {
_ = c.xcb_clear_area(conn, 0, win, 0, 0, 0, 0);
_ = c.xcb_poly_rectangle(conn, win, foreground, 1, @ptrCast(&rectangles));
_ = c.xcb_image_text_8(conn, string.len, win, background, 20, 20, string);
_ = c.xcb_flush(conn);
},
c.XCB_KEY_PRESS => {
//break;
},
else => {},
}
}
}
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