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Support pinch, double tap and rotation gestures on iOS (#3130)

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This is off by default on iOS. Note that pinch delta may be NaN.

Co-authored-by: Mads Marquart <mads@marquart.dk>
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François 2024-01-16 21:31:18 +01:00 • committed by GitHub
parent 30775f4982
commit 6b29253797
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10 changed files with 362 additions and 34 deletions
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34
src/event.rs
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@ -447,21 +447,23 @@ pub enum WindowEvent {
button: MouseButton,
},
/// Touchpad magnification event with two-finger pinch gesture.
///
/// Positive delta values indicate magnification (zooming in) and
/// negative delta values indicate shrinking (zooming out).
/// Two-finger pinch gesture, often used for magnification.
///
/// ## Platform-specific
///
/// - Only available on **macOS**.
TouchpadMagnify {
/// - Only available on **macOS** and **iOS**.
/// - On iOS, not recognized by default. It must be enabled when needed.
PinchGesture {
device_id: DeviceId,
/// Positive values indicate magnification (zooming in) and negative
/// values indicate shrinking (zooming out).
///
/// This value may be NaN.
delta: f64,
phase: TouchPhase,
},
/// Smart magnification event.
/// Double tap gesture.
///
/// On a Mac, smart magnification is triggered by a double tap with two fingers
/// on the trackpad and is commonly used to zoom on a certain object
@ -477,18 +479,20 @@ pub enum WindowEvent {
///
/// ## Platform-specific
///
/// - Only available on **macOS 10.8** and later.
SmartMagnify { device_id: DeviceId },
/// - Only available on **macOS 10.8** and later, and **iOS**.
/// - On iOS, not recognized by default. It must be enabled when needed.
DoubleTapGesture { device_id: DeviceId },
/// Touchpad rotation event with two-finger rotation gesture.
/// Two-finger rotation gesture.
///
/// Positive delta values indicate rotation counterclockwise and
/// negative delta values indicate rotation clockwise.
///
/// ## Platform-specific
///
/// - Only available on **macOS**.
TouchpadRotate {
/// - Only available on **macOS** and **iOS**.
/// - On iOS, not recognized by default. It must be enabled when needed.
RotationGesture {
device_id: DeviceId,
delta: f32,
phase: TouchPhase,
@ -1201,13 +1205,13 @@ mod tests {
state: event::ElementState::Pressed,
button: event::MouseButton::Other(0),
});
with_window_event(TouchpadMagnify {
with_window_event(PinchGesture {
device_id: did,
delta: 0.0,
phase: event::TouchPhase::Started,
});
with_window_event(SmartMagnify { device_id: did });
with_window_event(TouchpadRotate {
with_window_event(DoubleTapGesture { device_id: did });
with_window_event(RotationGesture {
device_id: did,
delta: 0.0,
phase: event::TouchPhase::Started,