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110a57983b
This change makes it so that we track all the motion events encountered by `FlutterView` and all of its subviews in the `MotionEventTracker` class, indexed by a unique `MotionEventId`. This identifier is then passed to the Flutter framework as seen in https://github.com/flutter/flutter/pull/60930. Once the gestures take part in gesture disambiguation and are sent back to the engine, we look-up the original motion event using the `MotionEventId` and dispatch it to the platform. Bug: https://github.com/flutter/flutter/issues/58837
97 lines
2.2 KiB
C++
97 lines
2.2 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_LIB_UI_WINDOW_POINTER_DATA_H_
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#define FLUTTER_LIB_UI_WINDOW_POINTER_DATA_H_
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#include <stdint.h>
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namespace flutter {
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// If this value changes, update the pointer data unpacking code in hooks.dart.
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static constexpr int kPointerDataFieldCount = 29;
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static constexpr int kBytesPerField = sizeof(int64_t);
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// Must match the button constants in events.dart.
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enum PointerButtonMouse : int64_t {
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kPointerButtonMousePrimary = 1 << 0,
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kPointerButtonMouseSecondary = 1 << 1,
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kPointerButtonMouseMiddle = 1 << 2,
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kPointerButtonMouseBack = 1 << 3,
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kPointerButtonMouseForward = 1 << 4,
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};
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enum PointerButtonTouch : int64_t {
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kPointerButtonTouchContact = 1 << 0,
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};
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enum PointerButtonStylus : int64_t {
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kPointerButtonStylusContact = 1 << 0,
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kPointerButtonStylusPrimary = 1 << 1,
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kPointerButtonStylusSecondary = 1 << 2,
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};
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// This structure is unpacked by hooks.dart.
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struct alignas(8) PointerData {
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// Must match the PointerChange enum in pointer.dart.
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enum class Change : int64_t {
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kCancel,
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kAdd,
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kRemove,
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kHover,
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kDown,
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kMove,
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kUp,
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};
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// Must match the PointerDeviceKind enum in pointer.dart.
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enum class DeviceKind : int64_t {
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kTouch,
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kMouse,
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kStylus,
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kInvertedStylus,
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};
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// Must match the PointerSignalKind enum in pointer.dart.
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enum class SignalKind : int64_t {
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kNone,
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kScroll,
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};
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int64_t embedder_id;
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int64_t time_stamp;
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Change change;
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DeviceKind kind;
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SignalKind signal_kind;
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int64_t device;
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int64_t pointer_identifier;
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double physical_x;
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double physical_y;
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double physical_delta_x;
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double physical_delta_y;
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int64_t buttons;
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int64_t obscured;
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int64_t synthesized;
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double pressure;
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double pressure_min;
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double pressure_max;
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double distance;
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double distance_max;
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double size;
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double radius_major;
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double radius_minor;
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double radius_min;
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double radius_max;
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double orientation;
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double tilt;
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int64_t platformData;
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double scroll_delta_x;
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double scroll_delta_y;
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void Clear();
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};
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} // namespace flutter
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#endif // FLUTTER_LIB_UI_WINDOW_POINTER_DATA_H_
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