b3c5ee6219
* Fix no primary monitor panic in XWayland In this case try to use the first existing monitor instead of panicking. Fixes #317 * Shift no monitor panic to x11::get_primary_monitor * Update changelog with xll get_primary_monitor fallback
106 lines
3.9 KiB
Rust
106 lines
3.9 KiB
Rust
use std::sync::Arc;
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use std::slice;
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use super::XConnection;
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#[derive(Clone)]
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pub struct MonitorId {
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/// The actual id
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id: u32,
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/// The name of the monitor
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name: String,
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/// The size of the monitor
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dimensions: (u32, u32),
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/// The position of the monitor in the X screen
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position: (i32, i32),
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/// If the monitor is the primary one
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primary: bool,
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}
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pub fn get_available_monitors(x: &Arc<XConnection>) -> Vec<MonitorId> {
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let mut available = Vec::new();
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unsafe {
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let root = (x.xlib.XDefaultRootWindow)(x.display);
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let resources = (x.xrandr.XRRGetScreenResources)(x.display, root);
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let mut major = 0;
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let mut minor = 0;
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(x.xrandr.XRRQueryVersion)(x.display, &mut major, &mut minor);
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if ((major as u64)<<32)+(minor as u64) >= (1<<32)+5 {
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// We're in XRandR >= 1.5, enumerate Monitors to handle things like MST and videowalls
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let mut nmonitors = 0;
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let monitors = (x.xrandr.XRRGetMonitors)(x.display, root, 1, &mut nmonitors);
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for i in 0..nmonitors {
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let monitor = *(monitors.offset(i as isize));
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let output = (x.xrandr.XRRGetOutputInfo)(x.display, resources, *(monitor.outputs.offset(0)));
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let nameslice = slice::from_raw_parts((*output).name as *mut u8, (*output).nameLen as usize);
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let name = String::from_utf8_lossy(nameslice).into_owned();
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(x.xrandr.XRRFreeOutputInfo)(output);
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available.push(MonitorId{
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id: i as u32,
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name,
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dimensions: (monitor.width as u32, monitor.height as u32),
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position: (monitor.x as i32, monitor.y as i32),
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primary: (monitor.primary != 0),
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});
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}
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(x.xrandr.XRRFreeMonitors)(monitors);
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} else {
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// We're in XRandR < 1.5, enumerate CRTCs. Everything will work but MST and
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// videowall setups will show more monitors than the logical groups the user
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// cares about
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for i in 0..(*resources).ncrtc {
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let crtcid = *((*resources).crtcs.offset(i as isize));
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let crtc = (x.xrandr.XRRGetCrtcInfo)(x.display, resources, crtcid);
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if (*crtc).width > 0 && (*crtc).height > 0 && (*crtc).noutput > 0 {
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let output = (x.xrandr.XRRGetOutputInfo)(x.display, resources, *((*crtc).outputs.offset(0)));
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let nameslice = slice::from_raw_parts((*output).name as *mut u8, (*output).nameLen as usize);
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let name = String::from_utf8_lossy(nameslice).into_owned();
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(x.xrandr.XRRFreeOutputInfo)(output);
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available.push(MonitorId{
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id: crtcid as u32,
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name,
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dimensions: ((*crtc).width as u32, (*crtc).height as u32),
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position: ((*crtc).x as i32, (*crtc).y as i32),
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primary: true,
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});
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}
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(x.xrandr.XRRFreeCrtcInfo)(crtc);
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}
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}
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(x.xrandr.XRRFreeScreenResources)(resources);
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}
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available
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}
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#[inline]
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pub fn get_primary_monitor(x: &Arc<XConnection>) -> MonitorId {
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get_available_monitors(x).into_iter().find(|m| m.primary)
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// 'no primary' case is better handled picking some existing monitor
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.or_else(|| get_available_monitors(x).into_iter().next())
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.expect("[winit] Failed to find any x11 monitor")
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}
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impl MonitorId {
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pub fn get_name(&self) -> Option<String> {
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Some(self.name.clone())
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}
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#[inline]
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pub fn get_native_identifier(&self) -> u32 {
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self.id as u32
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}
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pub fn get_dimensions(&self) -> (u32, u32) {
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self.dimensions
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}
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pub fn get_position(&self) -> (i32, i32) {
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self.position
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}
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#[inline]
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pub fn get_hidpi_factor(&self) -> f32 {
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1.0
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}
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}
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