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workaround missing hidpifactor event notification on linux

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This commit is contained in:
Wez Furlong 2019-02-23 23:37:24 -08:00
parent af882a1762
commit df8b415faa
1 changed files with 17 additions and 1 deletions
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18
src/gliumwindows.rs
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@ -802,13 +802,29 @@ impl GliumTerminalWindow {
} => {
// Assuming that this is dragging a window between hidpi and
// normal dpi displays. Treat this as a resize event of sorts
eprintln!("HiDpiFactorChanged {}", factor);
self.scaling_changed(None, Some(factor), self.width, self.height)?;
}
Event::WindowEvent {
event: WindowEvent::Resized(size),
..
} => {
self.resize_surfaces_logical(size)?;
// On Linux we may get here when HiDpiFactorChanged occurs, but
// without ever receiving a HiDpiFactorChanged event.
// We need to synthesize that event here by checking what we
// think we know, otherwise we will use the wrong font size.
let old_dpi_scale = self.fonts.get_dpi_scale();
let dpi_scale = self.host.display.gl_window().get_hidpi_factor();
if old_dpi_scale != dpi_scale {
let (width, height): (u32, u32) = size.to_physical(dpi_scale).into();
eprintln!(
"Synthesize HiDpiFactorChanged {} -> {}",
old_dpi_scale, dpi_scale
);
self.scaling_changed(None, Some(dpi_scale), width as u16, height as u16)?;
} else {
self.resize_surfaces_logical(size)?;
}
}
Event::WindowEvent {
event: WindowEvent::Moved(position),