Commit c14dd913d43368b759a012100ccad7fda4679160 - knurling

very basic rust statusbar Getty Ritter 5 years ago

6 changed file(s) with 603 addition(s) and 0 deletion(s). Collapse all Expand all

-0

.gitignore less more

	1	/target
	2	*/.rs.bk*~
	3	*~

+208

-0

Cargo.lock less more

	1	# This file is automatically @generated by Cargo.
	2	# It is not intended for manual editing.
	3	[[package]]
	4	name = "bitflags"
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	6	source = "registry+https://github.com/rust-lang/crates.io-index"
	7
	8	[[package]]
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	12	dependencies = [
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	14	"cairo-sys-rs 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
	15	"glib 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
	16	"glib-sys 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
	17	"gobject-sys 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
	18	"libc 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)",
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	20
	21	[[package]]
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	28	"pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
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	32
	33	[[package]]
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+20

-0

Cargo.toml less more

	1	[package]
	2	name = "xsamp"
	3	version = "0.1.0"
	4	authors = ["Getty Ritter <samothes@infinitenegativeutility.com>"]
	5	edition = "2018"
	6
	7	[dependencies]
	8	cairo-rs = "*"
	9	pango = "*"
	10	pangocairo = "*"
	11	time = "*"
	12	libc = "*"
	13
	14	[dependencies.cairo-sys-rs]
	15	version = "*"
	16	features = ["xlib"]
	17
	18	[dependencies.x11]
	19	version = "*"
	20	features = ["xlib", "xinput"]

-0

build.rs less more

	1	fn main() {
	2	println!("cargo:rustc-flags=-l X11");
	3	}

+154

-0

src/main.rs less more

	1	mod window;
	2
	3	use x11::xlib;
	4	use x11::xinput2;
	5
	6	use std::ffi::CString;
	7	use std::os::raw::{c_int,c_uchar};
	8	use std::ptr;
	9
	10	use pango::LayoutExt;
	11
	12	use window::{Event,Window};
	13
	14	fn main() {
	15	unsafe {
	16	let mut w = Window::create();
	17	w.change_property("_NET_WM_WINDOW_TYPE", "_NET_WM_WINDOW_TYPE_DOCK");
	18
	19	{
	20	let prop = w.intern("_NET_WM_STRUT_PARTIAL");
	21	let val = [
	22	0i64, 0, 36, 0,
	23	0, 0, 0, 0,
	24	0, 3840, 0, 0,
	25	];
	26	xlib::XChangeProperty(
	27	w.display,
	28	w.window,
	29	prop,
	30	xlib::XA_CARDINAL,
	31	32,
	32	xlib::PropModeReplace,
	33	std::mem::transmute(val.as_ptr()),
	34	val.len() as c_int,
	35	);
	36	}
	37
	38	{
	39	let prop = w.intern("_NET_WM_STRUT");
	40	let val = &[
	41	0i64, 0, 36, 0,
	42	];
	43	xlib::XChangeProperty(
	44	w.display,
	45	w.window,
	46	prop,
	47	xlib::XA_CARDINAL,
	48	32,
	49	xlib::PropModeReplace,
	50	std::mem::transmute(val.as_ptr()),
	51	val.len() as c_int,
	52	);
	53	}
	54
	55	w.set_title("rbar");
	56
	57	{
	58	let mut opcode = 0;
	59	let mut event = 0;
	60	let mut error = 0;
	61	let xinput_str = CString::new("XInputExtension").unwrap();
	62	let _xinput_available =
	63	xlib::XQueryExtension(w.display, xinput_str.as_ptr(), &mut opcode, &mut event, &mut error);
	64
	65	let mut mask: [c_uchar;1] = [0];
	66	let mut input_event_mask = xinput2::XIEventMask {
	67	deviceid: xinput2::XIAllMasterDevices,
	68	mask_len: mask.len() as i32,
	69	mask: mask.as_mut_ptr(),
	70	};
	71	let events = &[
	72	xinput2::XI_ButtonPress,
	73	xinput2::XI_ButtonRelease,
	74	];
	75	for &event in events {
	76	xinput2::XISetMask(&mut mask, event);
	77	}
	78
	79
	80	match xinput2::XISelectEvents(w.display, w.window, &mut input_event_mask, 1) {
	81	status if status as u8 == xlib::Success => (),
	82	err => panic!("Failed to select events {:?}", err)
	83	}
	84	}
	85
	86	w.set_protocols();
	87	w.map();
	88
	89	let surf = w.get_cairo_surface();
	90	let ctx = cairo::Context::new(&surf);
	91
	92	let window_fd = w.get_fd();
	93
	94	let mut fds = std::mem::uninitialized();
	95	let mut input = format!("Loading...");
	96	let mut stdin = std::io::BufReader::new(std::io::stdin());
	97	let mut timer = libc::timeval {
	98	tv_sec: 5,
	99	tv_usec: 0,
	100	};
	101	draw(&ctx, "[1]");
	102
	103	loop {
	104	use std::io::BufRead;
	105
	106	libc::FD_ZERO(&mut fds);
	107	libc::FD_SET(window_fd, &mut fds);
	108	libc::FD_SET(1, &mut fds);
	109
	110	libc::select(window_fd + 1, &mut fds, ptr::null_mut(), ptr::null_mut(), &mut timer);
	111
	112	if libc::FD_ISSET(1, &mut fds) {
	113	input = String::new();
	114	stdin.read_line(&mut input).unwrap();
	115	if input == "" {
	116	break;
	117	}
	118	draw(&ctx, &input);
	119	}
	120
	121	while w.has_events() {
	122	draw(&ctx, &input);
	123	match w.handle() {
	124	Event::QuitEvent => break,
	125	e => (),
	126	}
	127	}
	128
	129	}
	130	}
	131	}
	132
	133
	134	fn draw(ctx: &cairo::Context, left: &str) {
	135	let now = time::now();
	136
	137	ctx.set_source_rgb(0.1, 0.1, 0.1);
	138	ctx.paint();
	139	ctx.set_source_rgb(1.0, 1.0, 1.0);
	140
	141	let layout = pangocairo::functions::create_layout(&ctx).unwrap();
	142	layout.set_alignment(pango::Alignment::Right);
	143	layout.set_width((3840 - 20) * pango::SCALE);
	144	let mut font = pango::FontDescription::from_string("Fira Mono 18");
	145	font.set_weight(pango::Weight::Bold);
	146	layout.set_font_description(&font);
	147	ctx.move_to(10.0, 4.0);
	148	layout.set_text(&time::strftime("%a %b %d %H:%M", &now).unwrap());
	149	pangocairo::functions::show_layout(&ctx, &layout);
	150
	151	layout.set_alignment(pango::Alignment::Left);
	152	layout.set_text(left);
	153	pangocairo::functions::show_layout(&ctx, &layout);
	154	}

+215

-0

src/window.rs less more

	1	use x11::{xlib,xinput2};
	2
	3	use std::ffi::CString;
	4	use std::{mem,ptr};
	5	use std::os::raw::c_int;
	6
	7	pub struct Window {
	8	pub display: *mut xlib::_XDisplay,
	9	pub screen: i32,
	10	pub window: u64,
	11	pub wm_protocols: u64,
	12	pub wm_delete_window: u64,
	13	}
	14
	15	impl Window {
	16	pub fn create() -> Window {
	17	unsafe {
	18	let display = xlib::XOpenDisplay(ptr::null());
	19	let screen = xlib::XDefaultScreen(display);
	20	let window = xlib::XCreateSimpleWindow(
	21	display,
	22	xlib::XRootWindow(display, screen),
	23	0,
	24	0,
	25	3840,
	26	36,
	27	1,
	28	xlib::XBlackPixel(display, screen),
	29	xlib::XWhitePixel(display, screen),
	30	);
	31	let wm_protocols = {
	32	let cstr = CString::new("WM_PROTOCOLS").unwrap();
	33	xlib::XInternAtom(display, cstr.as_ptr(), 0)
	34	};
	35	let wm_delete_window = {
	36	let cstr = CString::new("WM_DELETE_WINDOW").unwrap();
	37	xlib::XInternAtom(display, cstr.as_ptr(), 0)
	38	};
	39	Window {
	40	display,
	41	screen,
	42	window,
	43	wm_protocols,
	44	wm_delete_window,
	45	}
	46	}
	47	}
	48
	49	pub fn set_protocols(&mut self) {
	50	let mut protocols = [self.intern("WM_DELETE_WINDOW")];
	51	unsafe {
	52	xlib::XSetWMProtocols(
	53	self.display,
	54	self.window,
	55	protocols.as_mut_ptr(),
	56	protocols.len() as c_int,
	57	);
	58	}
	59	}
	60
	61	pub fn set_title(&mut self, name: &str) {
	62	unsafe {
	63	xlib::XStoreName(
	64	self.display,
	65	self.window,
	66	CString::new(name).unwrap().as_ptr(),
	67	);
	68	}
	69	}
	70
	71	pub fn map(&mut self) {
	72	unsafe {
	73	xlib::XMapWindow(self.display, self.window);
	74	}
	75	}
	76
	77	pub fn intern(&mut self, s: &str) -> u64 {
	78	unsafe {
	79	let cstr = CString::new(s).unwrap();
	80	xlib::XInternAtom(self.display, cstr.as_ptr(), 0)
	81	}
	82	}
	83
	84	pub fn change_property(&mut self, prop: &str, val: &str) {
	85	let prop = self.intern(prop);
	86	let val = self.intern(val);
	87	unsafe {
	88	xlib::XChangeProperty(
	89	self.display,
	90	self.window,
	91	prop,
	92	xlib::XA_ATOM,
	93	32,
	94	xlib::PropModeReplace,
	95	mem::transmute(&val),
	96	1,
	97	);
	98	}
	99	}
	100
	101	pub fn get_cairo_surface(&mut self) -> cairo::Surface {
	102	unsafe {
	103	let s = cairo_sys::cairo_xlib_surface_create(
	104	self.display,
	105	self.window,
	106	xlib::XDefaultVisual(self.display, self.screen),
	107	3840,
	108	64,
	109	);
	110	cairo::Surface::from_raw_none(s)
	111	}
	112	}
	113
	114	pub fn handle(&mut self) -> Event {
	115	// to find out if we're getting a delete window event
	116
	117	let mut e = unsafe { mem::uninitialized() };
	118	unsafe { xlib::XNextEvent(self.display, &mut e) };
	119	match e.get_type() {
	120	xlib::ClientMessage => {
	121	let xclient: xlib::XClientMessageEvent = From::from(e);
	122	if xclient.message_type == self.wm_protocols && xclient.format == 32 {
	123	let protocol = xclient.data.get_long(0) as xlib::Atom;
	124	if protocol == self.wm_delete_window {
	125	return Event::QuitEvent;
	126	}
	127	}
	128	}
	129
	130	xlib::Expose => return Event::ShowEvent,
	131
	132	xlib::GenericEvent => {
	133	let mut cookie: xlib::XGenericEventCookie = From::from(e);
	134	unsafe { xlib::XGetEventData(self.display, &mut cookie) };
	135	match cookie.evtype {
	136	xinput2::XI_ButtonPress => {
	137	let data: &xinput2::XIDeviceEvent = unsafe { mem::transmute(cookie.data) };
	138	return Event::MouseEvent { x: data.event_x, y: data.event_y };
	139	}
	140	_ => (),
	141	}
	142	}
	143	_ => (),
	144	}
	145
	146	Event::Other
	147	}
	148
	149	pub fn has_events(&mut self) -> bool {
	150	unsafe {
	151	xlib::XPending(self.display) != 0
	152	}
	153	}
	154
	155	pub fn show(&mut self) {
	156	unsafe {
	157	xlib::XClearArea(
	158	self.display,
	159	self.window,
	160	0,
	161	0,
	162	3840,
	163	36,
	164	1
	165	);
	166	}
	167	}
	168
	169	pub fn get_fd(&mut self) -> i32 {
	170	unsafe {
	171	xlib::XConnectionNumber(self.display)
	172	}
	173	}
	174	}
	175
	176
	177	impl Drop for Window {
	178	fn drop(&mut self) {
	179	unsafe {
	180	xlib::XCloseDisplay(self.display);
	181	}
	182	}
	183	}
	184
	185	#[derive(Debug)]
	186	pub enum Event {
	187	MouseEvent { x:f64, y: f64 },
	188	ShowEvent,
	189	QuitEvent,
	190	Other,
	191	}
	192
	193	/*
	194	cairo_surface_t *cairo_create_x11_surface0(int x, int y)
	195	{
	196	Display *dsp;
	197	Drawable da;
	198	int screen;
	199	cairo_surface_t *sfc;
	200
	201	if ((dsp = XOpenDisplay(NULL)) == NULL)
	202	exit(1);
	203	screen = DefaultScreen(dsp);
	204	da = XCreateSimpleWindow(dsp, DefaultRootWindow(dsp),
	205	0, 0, x, y, 0, 0, 0);
	206	XSelectInput(dsp, da, ButtonPressMask \| KeyPressMask);
	207	XMapWindow(dsp, da);
	208
	209	sfc = cairo_xlib_surface_create(dsp, da,
	210	DefaultVisual(dsp, screen), x, y);
	211	cairo_xlib_surface_set_size(sfc, x, y);
	212
	213	return sfc;
	214	}
	215	*/