Redo "Remove pressure customization from some pointer events" (#30874)

* Revert "Revert "Remove pressure customization from some pointer events (#30414)" (#30873)"

This reverts commit f34c2ef0.

* Revert pressure removal of PointerUpEvent

* Replace PR with an issue

* Add tests for fromMouseEvent

packages/flutter/lib/src/gestures/converter.dart

@@ -337,7 +337,6 @@ class PointerEventConverter {
                 position: position,
                 buttons: datum.buttons,
                 obscured: datum.obscured,
-                pressure: datum.pressure,
                 pressureMin: datum.pressureMin,
                 pressureMax: datum.pressureMax,
                 distance: datum.distance,
@@ -364,7 +363,6 @@ class PointerEventConverter {
                 position: state.lastPosition, // Change position in Hover
                 buttons: datum.buttons,
                 obscured: datum.obscured,
-                pressure: datum.pressure,
                 pressureMin: datum.pressureMin,
                 pressureMax: datum.pressureMax,
                 distance: datum.distance,

packages/flutter/lib/src/gestures/events.dart

@@ -372,7 +372,6 @@ class PointerAddedEvent extends PointerEvent {
     int device = 0,
     Offset position = Offset.zero,
     bool obscured = false,
-    double pressure = 0.0,
     double pressureMin = 1.0,
     double pressureMax = 1.0,
     double distance = 0.0,
@@ -387,7 +386,7 @@ class PointerAddedEvent extends PointerEvent {
          device: device,
          position: position,
          obscured: obscured,
-         pressure: pressure,
+         pressure: 0.0,
          pressureMin: pressureMin,
          pressureMax: pressureMax,
          distance: distance,
@@ -412,7 +411,6 @@ class PointerRemovedEvent extends PointerEvent {
     PointerDeviceKind kind = PointerDeviceKind.touch,
     int device = 0,
     bool obscured = false,
-    double pressure = 0.0,
     double pressureMin = 1.0,
     double pressureMax = 1.0,
     double distanceMax = 0.0,
@@ -424,7 +422,7 @@ class PointerRemovedEvent extends PointerEvent {
          device: device,
          position: null,
          obscured: obscured,
-         pressure: pressure,
+         pressure: 0.0,
          pressureMin: pressureMin,
          pressureMax: pressureMax,
          distanceMax: distanceMax,
@@ -455,7 +453,6 @@ class PointerHoverEvent extends PointerEvent {
     Offset delta = Offset.zero,
     int buttons = 0,
     bool obscured = false,
-    double pressure = 0.0,
     double pressureMin = 1.0,
     double pressureMax = 1.0,
     double distance = 0.0,
@@ -477,7 +474,7 @@ class PointerHoverEvent extends PointerEvent {
          buttons: buttons,
          down: false,
          obscured: obscured,
-         pressure: pressure,
+         pressure: 0.0,
          pressureMin: pressureMin,
          pressureMax: pressureMax,
          distance: distance,
@@ -515,7 +512,6 @@ class PointerEnterEvent extends PointerEvent {
     Offset delta = Offset.zero,
     int buttons = 0,
     bool obscured = false,
-    double pressure = 0.0,
     double pressureMin = 1.0,
     double pressureMax = 1.0,
     double distance = 0.0,
@@ -537,7 +533,7 @@ class PointerEnterEvent extends PointerEvent {
          buttons: buttons,
          down: false,
          obscured: obscured,
-         pressure: pressure,
+         pressure: 0.0,
          pressureMin: pressureMin,
          pressureMax: pressureMax,
          distance: distance,
@@ -561,16 +557,14 @@ class PointerEnterEvent extends PointerEvent {
   /// Creates an enter event from a [PointerEvent].
   ///
   /// This is used by the [MouseTracker] to synthesize enter events.
-  PointerEnterEvent.fromMouseEvent(PointerEvent event) : super(
+  PointerEnterEvent.fromMouseEvent(PointerEvent event) : this(
     timeStamp: event?.timeStamp,
     kind: event?.kind,
     device: event?.device,
     position: event?.position,
     delta: event?.delta,
     buttons: event?.buttons,
-    down: event?.down,
     obscured: event?.obscured,
-    pressure: event?.pressure,
     pressureMin: event?.pressureMin,
     pressureMax: event?.pressureMax,
     distance: event?.distance,
@@ -608,7 +602,6 @@ class PointerExitEvent extends PointerEvent {
     Offset delta = Offset.zero,
     int buttons = 0,
     bool obscured = false,
-    double pressure = 0.0,
     double pressureMin = 1.0,
     double pressureMax = 1.0,
     double distance = 0.0,
@@ -630,7 +623,7 @@ class PointerExitEvent extends PointerEvent {
          buttons: buttons,
          down: false,
          obscured: obscured,
-         pressure: pressure,
+         pressure: 0.0,
          pressureMin: pressureMin,
          pressureMax: pressureMax,
          distance: distance,
@@ -654,16 +647,14 @@ class PointerExitEvent extends PointerEvent {
   /// Creates an exit event from a [PointerEvent].
   ///
   /// This is used by the [MouseTracker] to synthesize exit events.
-  PointerExitEvent.fromMouseEvent(PointerEvent event) : super(
+  PointerExitEvent.fromMouseEvent(PointerEvent event) : this(
     timeStamp: event?.timeStamp,
     kind: event?.kind,
     device: event?.device,
     position: event?.position,
     delta: event?.delta,
     buttons: event?.buttons,
-    down: event?.down,
     obscured: event?.obscured,
-    pressure: event?.pressure,
     pressureMin: event?.pressureMin,
     pressureMax: event?.pressureMax,
     distance: event?.distance,
@@ -800,6 +791,8 @@ class PointerUpEvent extends PointerEvent {
     Offset position = Offset.zero,
     int buttons = 0,
     bool obscured = false,
+    // Allow pressure customization here because PointerUpEvent can contain
+    // non-zero pressure. See https://github.com/flutter/flutter/issues/31340
     double pressure = 0.0,
     double pressureMin = 1.0,
     double pressureMax = 1.0,
@@ -908,7 +901,6 @@ class PointerCancelEvent extends PointerEvent {
     Offset position = Offset.zero,
     int buttons = 0,
     bool obscured = false,
-    double pressure = 0.0,
     double pressureMin = 1.0,
     double pressureMax = 1.0,
     double distance = 0.0,
@@ -929,7 +921,7 @@ class PointerCancelEvent extends PointerEvent {
          buttons: buttons,
          down: false,
          obscured: obscured,
-         pressure: pressure,
+         pressure: 0.0,
          pressureMin: pressureMin,
          pressureMax: pressureMax,
          distance: distance,

packages/flutter/test/gestures/events_test.dart

@@ -20,6 +20,83 @@ void main() {
     expect(nthStylusButton(2), kSecondaryStylusButton);
   });
 
+  group('fromMouseEvent', () {
+    const PointerEvent hover = PointerHoverEvent(
+      timeStamp: Duration(days: 1),
+      kind: PointerDeviceKind.unknown,
+      device: 10,
+      position: Offset(101.0, 202.0),
+      buttons: 7,
+      obscured: true,
+      pressureMax: 2.1,
+      pressureMin: 1.1,
+      distance: 11,
+      distanceMax: 110,
+      size: 11,
+      radiusMajor: 11,
+      radiusMinor: 9,
+      radiusMin: 1.1,
+      radiusMax: 22,
+      orientation: 1.1,
+      tilt: 1.1,
+      synthesized: true,
+    );
+
+    test('PointerEnterEvent.fromMouseEvent', () {
+      final PointerEnterEvent event = PointerEnterEvent.fromMouseEvent(hover);
+      const PointerEnterEvent empty = PointerEnterEvent();
+      expect(event.timeStamp,   hover.timeStamp);
+      expect(event.pointer,     empty.pointer);
+      expect(event.kind,        hover.kind);
+      expect(event.device,      hover.device);
+      expect(event.position,    hover.position);
+      expect(event.buttons,     hover.buttons);
+      expect(event.down,        empty.down);
+      expect(event.obscured,    hover.obscured);
+      expect(event.pressure,    empty.pressure);
+      expect(event.pressureMin, hover.pressureMin);
+      expect(event.pressureMax, hover.pressureMax);
+      expect(event.distance,    hover.distance);
+      expect(event.distanceMax, hover.distanceMax);
+      expect(event.distanceMax, hover.distanceMax);
+      expect(event.size,        hover.size);
+      expect(event.radiusMajor, hover.radiusMajor);
+      expect(event.radiusMinor, hover.radiusMinor);
+      expect(event.radiusMin,   hover.radiusMin);
+      expect(event.radiusMax,   hover.radiusMax);
+      expect(event.orientation, hover.orientation);
+      expect(event.tilt,        hover.tilt);
+      expect(event.synthesized, hover.synthesized);
+    });
+
+    test('PointerExitEvent.fromMouseEvent', () {
+      final PointerExitEvent event = PointerExitEvent.fromMouseEvent(hover);
+      const PointerExitEvent empty = PointerExitEvent();
+      expect(event.timeStamp,   hover.timeStamp);
+      expect(event.pointer,     empty.pointer);
+      expect(event.kind,        hover.kind);
+      expect(event.device,      hover.device);
+      expect(event.position,    hover.position);
+      expect(event.buttons,     hover.buttons);
+      expect(event.down,        empty.down);
+      expect(event.obscured,    hover.obscured);
+      expect(event.pressure,    empty.pressure);
+      expect(event.pressureMin, hover.pressureMin);
+      expect(event.pressureMax, hover.pressureMax);
+      expect(event.distance,    hover.distance);
+      expect(event.distanceMax, hover.distanceMax);
+      expect(event.distanceMax, hover.distanceMax);
+      expect(event.size,        hover.size);
+      expect(event.radiusMajor, hover.radiusMajor);
+      expect(event.radiusMinor, hover.radiusMinor);
+      expect(event.radiusMin,   hover.radiusMin);
+      expect(event.radiusMax,   hover.radiusMax);
+      expect(event.orientation, hover.orientation);
+      expect(event.tilt,        hover.tilt);
+      expect(event.synthesized, hover.synthesized);
+    });
+  });
+
   group('Default values of PointerEvents:', () {
     // Some parameters are intentionally set to a non-trivial value.