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-rw-r--r--libs/input/Input.cpp80
1 files changed, 41 insertions, 39 deletions
diff --git a/libs/input/Input.cpp b/libs/input/Input.cpp
index ee121d53fe..b09814797f 100644
--- a/libs/input/Input.cpp
+++ b/libs/input/Input.cpp
@@ -96,6 +96,19 @@ int32_t resolveActionForSplitMotionEvent(
return AMOTION_EVENT_ACTION_DOWN;
}
+float transformOrientation(const ui::Transform& transform, const PointerCoords& coords,
+ int32_t motionEventFlags) {
+ if ((motionEventFlags & AMOTION_EVENT_PRIVATE_FLAG_SUPPORTS_ORIENTATION) == 0) {
+ return 0;
+ }
+
+ const bool isDirectionalAngle =
+ (motionEventFlags & AMOTION_EVENT_PRIVATE_FLAG_SUPPORTS_DIRECTIONAL_ORIENTATION) != 0;
+
+ return transformAngle(transform, coords.getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION),
+ isDirectionalAngle);
+}
+
} // namespace
const char* motionClassificationToString(MotionClassification classification) {
@@ -187,7 +200,7 @@ vec2 transformWithoutTranslation(const ui::Transform& transform, const vec2& xy)
return roundTransformedCoords(transformedXy - transformedOrigin);
}
-float transformAngle(const ui::Transform& transform, float angleRadians) {
+float transformAngle(const ui::Transform& transform, float angleRadians, bool isDirectional) {
// Construct and transform a vector oriented at the specified clockwise angle from vertical.
// Coordinate system: down is increasing Y, right is increasing X.
float x = sinf(angleRadians);
@@ -201,6 +214,11 @@ float transformAngle(const ui::Transform& transform, float angleRadians) {
transformedPoint.x -= origin.x;
transformedPoint.y -= origin.y;
+ if (!isDirectional && transformedPoint.y > 0) {
+ // Limit the range of atan2f to [-pi/2, pi/2] by reversing the direction of the vector.
+ transformedPoint *= -1;
+ }
+
// Derive the transformed vector's clockwise angle from vertical.
// The return value of atan2f is in range [-pi, pi] which conforms to the orientation API.
return atan2f(transformedPoint.x, -transformedPoint.y);
@@ -530,26 +548,6 @@ bool PointerCoords::operator==(const PointerCoords& other) const {
return true;
}
-void PointerCoords::transform(const ui::Transform& transform) {
- const vec2 xy = transform.transform(getXYValue());
- setAxisValue(AMOTION_EVENT_AXIS_X, xy.x);
- setAxisValue(AMOTION_EVENT_AXIS_Y, xy.y);
-
- if (BitSet64::hasBit(bits, AMOTION_EVENT_AXIS_RELATIVE_X) ||
- BitSet64::hasBit(bits, AMOTION_EVENT_AXIS_RELATIVE_Y)) {
- const ui::Transform rotation(transform.getOrientation());
- const vec2 relativeXy = rotation.transform(getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_X),
- getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_Y));
- setAxisValue(AMOTION_EVENT_AXIS_RELATIVE_X, relativeXy.x);
- setAxisValue(AMOTION_EVENT_AXIS_RELATIVE_Y, relativeXy.y);
- }
-
- if (BitSet64::hasBit(bits, AMOTION_EVENT_AXIS_ORIENTATION)) {
- const float val = getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION);
- setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, transformAngle(transform, val));
- }
-}
-
// --- MotionEvent ---
void MotionEvent::initialize(int32_t id, int32_t deviceId, uint32_t source,
@@ -723,13 +721,13 @@ const PointerCoords* MotionEvent::getHistoricalRawPointerCoords(
float MotionEvent::getHistoricalRawAxisValue(int32_t axis, size_t pointerIndex,
size_t historicalIndex) const {
const PointerCoords& coords = *getHistoricalRawPointerCoords(pointerIndex, historicalIndex);
- return calculateTransformedAxisValue(axis, mSource, mRawTransform, coords);
+ return calculateTransformedAxisValue(axis, mSource, mFlags, mRawTransform, coords);
}
float MotionEvent::getHistoricalAxisValue(int32_t axis, size_t pointerIndex,
size_t historicalIndex) const {
const PointerCoords& coords = *getHistoricalRawPointerCoords(pointerIndex, historicalIndex);
- return calculateTransformedAxisValue(axis, mSource, mTransform, coords);
+ return calculateTransformedAxisValue(axis, mSource, mFlags, mTransform, coords);
}
ssize_t MotionEvent::findPointerIndex(int32_t pointerId) const {
@@ -786,8 +784,9 @@ void MotionEvent::applyTransform(const std::array<float, 9>& matrix) {
transform.set(matrix);
// Apply the transformation to all samples.
- std::for_each(mSamplePointerCoords.begin(), mSamplePointerCoords.end(),
- [&transform](PointerCoords& c) { c.transform(transform); });
+ std::for_each(mSamplePointerCoords.begin(), mSamplePointerCoords.end(), [&](PointerCoords& c) {
+ calculateTransformedCoordsInPlace(c, mSource, mFlags, transform);
+ });
if (mRawXCursorPosition != AMOTION_EVENT_INVALID_CURSOR_POSITION &&
mRawYCursorPosition != AMOTION_EVENT_INVALID_CURSOR_POSITION) {
@@ -1059,7 +1058,7 @@ vec2 MotionEvent::calculateTransformedXY(uint32_t source, const ui::Transform& t
}
// Keep in sync with calculateTransformedCoords.
-float MotionEvent::calculateTransformedAxisValue(int32_t axis, uint32_t source,
+float MotionEvent::calculateTransformedAxisValue(int32_t axis, uint32_t source, int32_t flags,
const ui::Transform& transform,
const PointerCoords& coords) {
if (shouldDisregardTransformation(source)) {
@@ -1081,7 +1080,7 @@ float MotionEvent::calculateTransformedAxisValue(int32_t axis, uint32_t source,
}
if (axis == AMOTION_EVENT_AXIS_ORIENTATION) {
- return transformAngle(transform, coords.getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION));
+ return transformOrientation(transform, coords, flags);
}
return coords.getAxisValue(axis);
@@ -1089,29 +1088,32 @@ float MotionEvent::calculateTransformedAxisValue(int32_t axis, uint32_t source,
// Keep in sync with calculateTransformedAxisValue. This is an optimization of
// calculateTransformedAxisValue for all PointerCoords axes.
-PointerCoords MotionEvent::calculateTransformedCoords(uint32_t source,
- const ui::Transform& transform,
- const PointerCoords& coords) {
+void MotionEvent::calculateTransformedCoordsInPlace(PointerCoords& coords, uint32_t source,
+ int32_t flags, const ui::Transform& transform) {
if (shouldDisregardTransformation(source)) {
- return coords;
+ return;
}
- PointerCoords out = coords;
const vec2 xy = calculateTransformedXYUnchecked(source, transform, coords.getXYValue());
- out.setAxisValue(AMOTION_EVENT_AXIS_X, xy.x);
- out.setAxisValue(AMOTION_EVENT_AXIS_Y, xy.y);
+ coords.setAxisValue(AMOTION_EVENT_AXIS_X, xy.x);
+ coords.setAxisValue(AMOTION_EVENT_AXIS_Y, xy.y);
const vec2 relativeXy =
transformWithoutTranslation(transform,
{coords.getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_X),
coords.getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_Y)});
- out.setAxisValue(AMOTION_EVENT_AXIS_RELATIVE_X, relativeXy.x);
- out.setAxisValue(AMOTION_EVENT_AXIS_RELATIVE_Y, relativeXy.y);
+ coords.setAxisValue(AMOTION_EVENT_AXIS_RELATIVE_X, relativeXy.x);
+ coords.setAxisValue(AMOTION_EVENT_AXIS_RELATIVE_Y, relativeXy.y);
- out.setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION,
- transformAngle(transform,
- coords.getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)));
+ coords.setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION,
+ transformOrientation(transform, coords, flags));
+}
+PointerCoords MotionEvent::calculateTransformedCoords(uint32_t source, int32_t flags,
+ const ui::Transform& transform,
+ const PointerCoords& coords) {
+ PointerCoords out = coords;
+ calculateTransformedCoordsInPlace(out, source, flags, transform);
return out;
}
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-12-09 00:48:25 +0000