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iOS: convert touch positions to physical (#1551)

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Francesca Lovebloom 2020-05-04 15:55:58 -07:00 committed by GitHub
parent b4c6cdf9a3
commit 007b195a5e
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2 changed files with 11 additions and 2 deletions
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1
CHANGELOG.md
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@ -2,6 +2,7 @@
- On Windows, fix window intermittently hanging when `ControlFlow` was set to `Poll`.
- On Windows, fix `WindowBuilder::with_maximized` being ignored.
- On iOS, touch positions are now properly converted to physical pixels.
# 0.22.1 (2020-04-16)

12
src/platform_impl/ios/view.rs
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@ -6,6 +6,7 @@ use objc::{
};
use crate::{
dpi::PhysicalPosition,
event::{DeviceId as RootDeviceId, Event, Force, Touch, TouchPhase, WindowEvent},
platform::ios::MonitorHandleExtIOS,
platform_impl::platform::{
@ -209,7 +210,7 @@ unsafe fn get_view_class(root_view_class: &'static Class) -> &'static Class {
if touch == nil {
break;
}
let location: CGPoint = msg_send![touch, locationInView: nil];
let logical_location: CGPoint = msg_send![touch, locationInView: nil];
let touch_type: UITouchType = msg_send![touch, type];
let force = if os_supports_force {
let trait_collection: id = msg_send![object, traitCollection];
@ -248,12 +249,19 @@ unsafe fn get_view_class(root_view_class: &'static Class) -> &'static Class {
_ => panic!("unexpected touch phase: {:?}", phase as i32),
};
let physical_location = {
let scale_factor: CGFloat = msg_send![object, contentScaleFactor];
PhysicalPosition::from_logical::<(f64, f64), f64>(
(logical_location.x as _, logical_location.y as _),
scale_factor,
)
};
touch_events.push(EventWrapper::StaticEvent(Event::WindowEvent {
window_id: RootWindowId(window.into()),
event: WindowEvent::Touch(Touch {
device_id: RootDeviceId(DeviceId { uiscreen }),
id: touch_id,
location: (location.x as f64, location.y as f64).into(),
location: physical_location,
force,
phase,
}),