Merge "MotionEvent: Round coordinates to a precision of 0.001"
diff --git a/include/input/Input.h b/include/input/Input.h
index 7ea2970..1eda981 100644
--- a/include/input/Input.h
+++ b/include/input/Input.h
@@ -818,6 +818,8 @@
const PointerCoords&);
static PointerCoords calculateTransformedCoords(uint32_t source, const ui::Transform&,
const PointerCoords&);
+ // The rounding precision for transformed motion events.
+ static constexpr float ROUNDING_PRECISION = 0.001f;
protected:
int32_t mAction;
diff --git a/libs/input/Input.cpp b/libs/input/Input.cpp
index 2b7483d..2581668 100644
--- a/libs/input/Input.cpp
+++ b/libs/input/Input.cpp
@@ -137,10 +137,23 @@
// --- InputEvent ---
+// Due to precision limitations when working with floating points, transforming - namely
+// scaling - floating points can lead to minute errors. We round transformed values to approximately
+// three decimal places so that values like 0.99997 show up as 1.0.
+inline float roundTransformedCoords(float val) {
+ // Use a power to two to approximate three decimal places to potentially reduce some cycles.
+ // This should be at least as precise as MotionEvent::ROUNDING_PRECISION.
+ return std::round(val * 1024.f) / 1024.f;
+}
+
+inline vec2 roundTransformedCoords(vec2 p) {
+ return {roundTransformedCoords(p.x), roundTransformedCoords(p.y)};
+}
+
vec2 transformWithoutTranslation(const ui::Transform& transform, const vec2& xy) {
const vec2 transformedXy = transform.transform(xy);
const vec2 transformedOrigin = transform.transform(0, 0);
- return transformedXy - transformedOrigin;
+ return roundTransformedCoords(transformedXy - transformedOrigin);
}
const char* inputEventTypeToString(int32_t type) {
@@ -548,12 +561,12 @@
float MotionEvent::getXCursorPosition() const {
vec2 vals = mTransform.transform(getRawXCursorPosition(), getRawYCursorPosition());
- return vals.x;
+ return roundTransformedCoords(vals.x);
}
float MotionEvent::getYCursorPosition() const {
vec2 vals = mTransform.transform(getRawXCursorPosition(), getRawYCursorPosition());
- return vals.y;
+ return roundTransformedCoords(vals.y);
}
void MotionEvent::setCursorPosition(float x, float y) {
@@ -875,7 +888,7 @@
static inline vec2 calculateTransformedXYUnchecked(uint32_t source, const ui::Transform& transform,
const vec2& xy) {
return shouldDisregardOffset(source) ? transformWithoutTranslation(transform, xy)
- : transform.transform(xy);
+ : roundTransformedCoords(transform.transform(xy));
}
vec2 MotionEvent::calculateTransformedXY(uint32_t source, const ui::Transform& transform,
diff --git a/libs/input/tests/InputEvent_test.cpp b/libs/input/tests/InputEvent_test.cpp
index 4b31246..597b389 100644
--- a/libs/input/tests/InputEvent_test.cpp
+++ b/libs/input/tests/InputEvent_test.cpp
@@ -29,6 +29,8 @@
// Default display id.
static constexpr int32_t DISPLAY_ID = ADISPLAY_ID_DEFAULT;
+static constexpr float EPSILON = MotionEvent::ROUNDING_PRECISION;
+
class BaseTest : public testing::Test {
protected:
static constexpr std::array<uint8_t, 32> HMAC = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
@@ -231,95 +233,107 @@
static constexpr float RAW_X_OFFSET = 12;
static constexpr float RAW_Y_OFFSET = -41.1;
+ void SetUp() override;
+
int32_t mId;
ui::Transform mTransform;
ui::Transform mRawTransform;
+ PointerProperties mPointerProperties[2];
+ struct Sample {
+ PointerCoords pointerCoords[2];
+ };
+ std::array<Sample, 3> mSamples{};
void initializeEventWithHistory(MotionEvent* event);
void assertEqualsEventWithHistory(const MotionEvent* event);
};
-void MotionEventTest::initializeEventWithHistory(MotionEvent* event) {
+void MotionEventTest::SetUp() {
mId = InputEvent::nextId();
mTransform.set({X_SCALE, 0, X_OFFSET, 0, Y_SCALE, Y_OFFSET, 0, 0, 1});
mRawTransform.set({RAW_X_SCALE, 0, RAW_X_OFFSET, 0, RAW_Y_SCALE, RAW_Y_OFFSET, 0, 0, 1});
- PointerProperties pointerProperties[2];
- pointerProperties[0].clear();
- pointerProperties[0].id = 1;
- pointerProperties[0].toolType = AMOTION_EVENT_TOOL_TYPE_FINGER;
- pointerProperties[1].clear();
- pointerProperties[1].id = 2;
- pointerProperties[1].toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
+ mPointerProperties[0].clear();
+ mPointerProperties[0].id = 1;
+ mPointerProperties[0].toolType = AMOTION_EVENT_TOOL_TYPE_FINGER;
+ mPointerProperties[1].clear();
+ mPointerProperties[1].id = 2;
+ mPointerProperties[1].toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
- PointerCoords pointerCoords[2];
- pointerCoords[0].clear();
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, 10);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, 11);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 12);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 13);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 14);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 15);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 16);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 17);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 18);
- pointerCoords[1].clear();
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_X, 20);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_Y, 21);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 22);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 23);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 24);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 25);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 26);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 27);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 28);
+ mSamples[0].pointerCoords[0].clear();
+ mSamples[0].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, 10);
+ mSamples[0].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, 11);
+ mSamples[0].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 12);
+ mSamples[0].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 13);
+ mSamples[0].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 14);
+ mSamples[0].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 15);
+ mSamples[0].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 16);
+ mSamples[0].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 17);
+ mSamples[0].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 18);
+ mSamples[0].pointerCoords[1].clear();
+ mSamples[0].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_X, 20);
+ mSamples[0].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_Y, 21);
+ mSamples[0].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 22);
+ mSamples[0].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 23);
+ mSamples[0].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 24);
+ mSamples[0].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 25);
+ mSamples[0].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 26);
+ mSamples[0].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 27);
+ mSamples[0].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 28);
+
+ mSamples[1].pointerCoords[0].clear();
+ mSamples[1].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, 110);
+ mSamples[1].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, 111);
+ mSamples[1].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 112);
+ mSamples[1].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 113);
+ mSamples[1].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 114);
+ mSamples[1].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 115);
+ mSamples[1].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 116);
+ mSamples[1].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 117);
+ mSamples[1].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 118);
+ mSamples[1].pointerCoords[1].clear();
+ mSamples[1].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_X, 120);
+ mSamples[1].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_Y, 121);
+ mSamples[1].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 122);
+ mSamples[1].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 123);
+ mSamples[1].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 124);
+ mSamples[1].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 125);
+ mSamples[1].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 126);
+ mSamples[1].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 127);
+ mSamples[1].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 128);
+
+ mSamples[2].pointerCoords[0].clear();
+ mSamples[2].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, 210);
+ mSamples[2].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, 211);
+ mSamples[2].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 212);
+ mSamples[2].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 213);
+ mSamples[2].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 214);
+ mSamples[2].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 215);
+ mSamples[2].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 216);
+ mSamples[2].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 217);
+ mSamples[2].pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 218);
+ mSamples[2].pointerCoords[1].clear();
+ mSamples[2].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_X, 220);
+ mSamples[2].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_Y, 221);
+ mSamples[2].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 222);
+ mSamples[2].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 223);
+ mSamples[2].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 224);
+ mSamples[2].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 225);
+ mSamples[2].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 226);
+ mSamples[2].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 227);
+ mSamples[2].pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 228);
+}
+
+void MotionEventTest::initializeEventWithHistory(MotionEvent* event) {
event->initialize(mId, 2, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID, HMAC,
AMOTION_EVENT_ACTION_MOVE, 0, AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED,
AMOTION_EVENT_EDGE_FLAG_TOP, AMETA_ALT_ON, AMOTION_EVENT_BUTTON_PRIMARY,
MotionClassification::NONE, mTransform, 2.0f, 2.1f,
AMOTION_EVENT_INVALID_CURSOR_POSITION, AMOTION_EVENT_INVALID_CURSOR_POSITION,
mRawTransform, ARBITRARY_DOWN_TIME, ARBITRARY_EVENT_TIME, 2,
- pointerProperties, pointerCoords);
-
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, 110);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, 111);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 112);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 113);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 114);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 115);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 116);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 117);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 118);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_X, 120);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_Y, 121);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 122);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 123);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 124);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 125);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 126);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 127);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 128);
- event->addSample(ARBITRARY_EVENT_TIME + 1, pointerCoords);
-
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, 210);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, 211);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 212);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 213);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 214);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 215);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 216);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 217);
- pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 218);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_X, 220);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_Y, 221);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_PRESSURE, 222);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_SIZE, 223);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, 224);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, 225);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 226);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 227);
- pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 228);
- event->addSample(ARBITRARY_EVENT_TIME + 2, pointerCoords);
+ mPointerProperties, mSamples[0].pointerCoords);
+ event->addSample(ARBITRARY_EVENT_TIME + 1, mSamples[1].pointerCoords);
+ event->addSample(ARBITRARY_EVENT_TIME + 2, mSamples[2].pointerCoords);
}
void MotionEventTest::assertEqualsEventWithHistory(const MotionEvent* event) {
@@ -356,51 +370,65 @@
ASSERT_EQ(ARBITRARY_EVENT_TIME + 1, event->getHistoricalEventTime(1));
ASSERT_EQ(ARBITRARY_EVENT_TIME + 2, event->getEventTime());
- ASSERT_EQ(11, event->getHistoricalRawPointerCoords(0, 0)->getAxisValue(AMOTION_EVENT_AXIS_Y));
- ASSERT_EQ(21, event->getHistoricalRawPointerCoords(1, 0)->getAxisValue(AMOTION_EVENT_AXIS_Y));
- ASSERT_EQ(111, event->getHistoricalRawPointerCoords(0, 1)->getAxisValue(AMOTION_EVENT_AXIS_Y));
- ASSERT_EQ(121, event->getHistoricalRawPointerCoords(1, 1)->getAxisValue(AMOTION_EVENT_AXIS_Y));
- ASSERT_EQ(211, event->getRawPointerCoords(0)->getAxisValue(AMOTION_EVENT_AXIS_Y));
- ASSERT_EQ(221, event->getRawPointerCoords(1)->getAxisValue(AMOTION_EVENT_AXIS_Y));
+ // Ensure the underlying PointerCoords are identical.
+ for (int sampleIdx = 0; sampleIdx < 3; sampleIdx++) {
+ for (int pointerIdx = 0; pointerIdx < 2; pointerIdx++) {
+ ASSERT_EQ(mSamples[sampleIdx].pointerCoords[pointerIdx],
+ event->getSamplePointerCoords()[sampleIdx * 2 + pointerIdx]);
+ }
+ }
- ASSERT_EQ(RAW_Y_OFFSET + 11 * RAW_Y_SCALE,
- event->getHistoricalRawAxisValue(AMOTION_EVENT_AXIS_Y, 0, 0));
- ASSERT_EQ(RAW_Y_OFFSET + 21 * RAW_Y_SCALE,
- event->getHistoricalRawAxisValue(AMOTION_EVENT_AXIS_Y, 1, 0));
- ASSERT_EQ(RAW_Y_OFFSET + 111 * RAW_Y_SCALE,
- event->getHistoricalRawAxisValue(AMOTION_EVENT_AXIS_Y, 0, 1));
- ASSERT_EQ(RAW_Y_OFFSET + 121 * RAW_Y_SCALE,
- event->getHistoricalRawAxisValue(AMOTION_EVENT_AXIS_Y, 1, 1));
- ASSERT_EQ(RAW_Y_OFFSET + 211 * RAW_Y_SCALE, event->getRawAxisValue(AMOTION_EVENT_AXIS_Y, 0));
- ASSERT_EQ(RAW_Y_OFFSET + 221 * RAW_Y_SCALE, event->getRawAxisValue(AMOTION_EVENT_AXIS_Y, 1));
+ ASSERT_NEAR(11, event->getHistoricalRawPointerCoords(0, 0)->getAxisValue(AMOTION_EVENT_AXIS_Y),
+ EPSILON);
+ ASSERT_NEAR(21, event->getHistoricalRawPointerCoords(1, 0)->getAxisValue(AMOTION_EVENT_AXIS_Y),
+ EPSILON);
+ ASSERT_NEAR(111, event->getHistoricalRawPointerCoords(0, 1)->getAxisValue(AMOTION_EVENT_AXIS_Y),
+ EPSILON);
+ ASSERT_NEAR(121, event->getHistoricalRawPointerCoords(1, 1)->getAxisValue(AMOTION_EVENT_AXIS_Y),
+ EPSILON);
+ ASSERT_NEAR(211, event->getRawPointerCoords(0)->getAxisValue(AMOTION_EVENT_AXIS_Y), EPSILON);
+ ASSERT_NEAR(221, event->getRawPointerCoords(1)->getAxisValue(AMOTION_EVENT_AXIS_Y), EPSILON);
- ASSERT_EQ(RAW_X_OFFSET + 10 * RAW_X_SCALE, event->getHistoricalRawX(0, 0));
- ASSERT_EQ(RAW_X_OFFSET + 20 * RAW_X_SCALE, event->getHistoricalRawX(1, 0));
- ASSERT_EQ(RAW_X_OFFSET + 110 * RAW_X_SCALE, event->getHistoricalRawX(0, 1));
- ASSERT_EQ(RAW_X_OFFSET + 120 * RAW_X_SCALE, event->getHistoricalRawX(1, 1));
- ASSERT_EQ(RAW_X_OFFSET + 210 * RAW_X_SCALE, event->getRawX(0));
- ASSERT_EQ(RAW_X_OFFSET + 220 * RAW_X_SCALE, event->getRawX(1));
+ ASSERT_NEAR(RAW_Y_OFFSET + 11 * RAW_Y_SCALE,
+ event->getHistoricalRawAxisValue(AMOTION_EVENT_AXIS_Y, 0, 0), EPSILON);
+ ASSERT_NEAR(RAW_Y_OFFSET + 21 * RAW_Y_SCALE,
+ event->getHistoricalRawAxisValue(AMOTION_EVENT_AXIS_Y, 1, 0), EPSILON);
+ ASSERT_NEAR(RAW_Y_OFFSET + 111 * RAW_Y_SCALE,
+ event->getHistoricalRawAxisValue(AMOTION_EVENT_AXIS_Y, 0, 1), EPSILON);
+ ASSERT_NEAR(RAW_Y_OFFSET + 121 * RAW_Y_SCALE,
+ event->getHistoricalRawAxisValue(AMOTION_EVENT_AXIS_Y, 1, 1), EPSILON);
+ ASSERT_NEAR(RAW_Y_OFFSET + 211 * RAW_Y_SCALE, event->getRawAxisValue(AMOTION_EVENT_AXIS_Y, 0),
+ EPSILON);
+ ASSERT_NEAR(RAW_Y_OFFSET + 221 * RAW_Y_SCALE, event->getRawAxisValue(AMOTION_EVENT_AXIS_Y, 1),
+ EPSILON);
- ASSERT_EQ(RAW_Y_OFFSET + 11 * RAW_Y_SCALE, event->getHistoricalRawY(0, 0));
- ASSERT_EQ(RAW_Y_OFFSET + 21 * RAW_Y_SCALE, event->getHistoricalRawY(1, 0));
- ASSERT_EQ(RAW_Y_OFFSET + 111 * RAW_Y_SCALE, event->getHistoricalRawY(0, 1));
- ASSERT_EQ(RAW_Y_OFFSET + 121 * RAW_Y_SCALE, event->getHistoricalRawY(1, 1));
- ASSERT_EQ(RAW_Y_OFFSET + 211 * RAW_Y_SCALE, event->getRawY(0));
- ASSERT_EQ(RAW_Y_OFFSET + 221 * RAW_Y_SCALE, event->getRawY(1));
+ ASSERT_NEAR(RAW_X_OFFSET + 10 * RAW_X_SCALE, event->getHistoricalRawX(0, 0), EPSILON);
+ ASSERT_NEAR(RAW_X_OFFSET + 20 * RAW_X_SCALE, event->getHistoricalRawX(1, 0), EPSILON);
+ ASSERT_NEAR(RAW_X_OFFSET + 110 * RAW_X_SCALE, event->getHistoricalRawX(0, 1), EPSILON);
+ ASSERT_NEAR(RAW_X_OFFSET + 120 * RAW_X_SCALE, event->getHistoricalRawX(1, 1), EPSILON);
+ ASSERT_NEAR(RAW_X_OFFSET + 210 * RAW_X_SCALE, event->getRawX(0), EPSILON);
+ ASSERT_NEAR(RAW_X_OFFSET + 220 * RAW_X_SCALE, event->getRawX(1), EPSILON);
- ASSERT_EQ(X_OFFSET + 10 * X_SCALE, event->getHistoricalX(0, 0));
- ASSERT_EQ(X_OFFSET + 20 * X_SCALE, event->getHistoricalX(1, 0));
- ASSERT_EQ(X_OFFSET + 110 * X_SCALE, event->getHistoricalX(0, 1));
- ASSERT_EQ(X_OFFSET + 120 * X_SCALE, event->getHistoricalX(1, 1));
- ASSERT_EQ(X_OFFSET + 210 * X_SCALE, event->getX(0));
- ASSERT_EQ(X_OFFSET + 220 * X_SCALE, event->getX(1));
+ ASSERT_NEAR(RAW_Y_OFFSET + 11 * RAW_Y_SCALE, event->getHistoricalRawY(0, 0), EPSILON);
+ ASSERT_NEAR(RAW_Y_OFFSET + 21 * RAW_Y_SCALE, event->getHistoricalRawY(1, 0), EPSILON);
+ ASSERT_NEAR(RAW_Y_OFFSET + 111 * RAW_Y_SCALE, event->getHistoricalRawY(0, 1), EPSILON);
+ ASSERT_NEAR(RAW_Y_OFFSET + 121 * RAW_Y_SCALE, event->getHistoricalRawY(1, 1), EPSILON);
+ ASSERT_NEAR(RAW_Y_OFFSET + 211 * RAW_Y_SCALE, event->getRawY(0), EPSILON);
+ ASSERT_NEAR(RAW_Y_OFFSET + 221 * RAW_Y_SCALE, event->getRawY(1), EPSILON);
- ASSERT_EQ(Y_OFFSET + 11 * Y_SCALE, event->getHistoricalY(0, 0));
- ASSERT_EQ(Y_OFFSET + 21 * Y_SCALE, event->getHistoricalY(1, 0));
- ASSERT_EQ(Y_OFFSET + 111 * Y_SCALE, event->getHistoricalY(0, 1));
- ASSERT_EQ(Y_OFFSET + 121 * Y_SCALE, event->getHistoricalY(1, 1));
- ASSERT_EQ(Y_OFFSET + 211 * Y_SCALE, event->getY(0));
- ASSERT_EQ(Y_OFFSET + 221 * Y_SCALE, event->getY(1));
+ ASSERT_NEAR(X_OFFSET + 10 * X_SCALE, event->getHistoricalX(0, 0), EPSILON);
+ ASSERT_NEAR(X_OFFSET + 20 * X_SCALE, event->getHistoricalX(1, 0), EPSILON);
+ ASSERT_NEAR(X_OFFSET + 110 * X_SCALE, event->getHistoricalX(0, 1), EPSILON);
+ ASSERT_NEAR(X_OFFSET + 120 * X_SCALE, event->getHistoricalX(1, 1), EPSILON);
+ ASSERT_NEAR(X_OFFSET + 210 * X_SCALE, event->getX(0), EPSILON);
+ ASSERT_NEAR(X_OFFSET + 220 * X_SCALE, event->getX(1), EPSILON);
+
+ ASSERT_NEAR(Y_OFFSET + 11 * Y_SCALE, event->getHistoricalY(0, 0), EPSILON);
+ ASSERT_NEAR(Y_OFFSET + 21 * Y_SCALE, event->getHistoricalY(1, 0), EPSILON);
+ ASSERT_NEAR(Y_OFFSET + 111 * Y_SCALE, event->getHistoricalY(0, 1), EPSILON);
+ ASSERT_NEAR(Y_OFFSET + 121 * Y_SCALE, event->getHistoricalY(1, 1), EPSILON);
+ ASSERT_NEAR(Y_OFFSET + 211 * Y_SCALE, event->getY(0), EPSILON);
+ ASSERT_NEAR(Y_OFFSET + 221 * Y_SCALE, event->getY(1), EPSILON);
ASSERT_EQ(12, event->getHistoricalPressure(0, 0));
ASSERT_EQ(22, event->getHistoricalPressure(1, 0));
@@ -532,10 +560,10 @@
ASSERT_EQ(X_OFFSET * 2, event.getXOffset());
ASSERT_EQ(Y_OFFSET * 2, event.getYOffset());
- ASSERT_EQ((RAW_X_OFFSET + 210 * RAW_X_SCALE) * 2, event.getRawX(0));
- ASSERT_EQ((RAW_Y_OFFSET + 211 * RAW_Y_SCALE) * 2, event.getRawY(0));
- ASSERT_EQ((X_OFFSET + 210 * X_SCALE) * 2, event.getX(0));
- ASSERT_EQ((Y_OFFSET + 211 * Y_SCALE) * 2, event.getY(0));
+ ASSERT_NEAR((RAW_X_OFFSET + 210 * RAW_X_SCALE) * 2, event.getRawX(0), EPSILON);
+ ASSERT_NEAR((RAW_Y_OFFSET + 211 * RAW_Y_SCALE) * 2, event.getRawY(0), EPSILON);
+ ASSERT_NEAR((X_OFFSET + 210 * X_SCALE) * 2, event.getX(0), EPSILON);
+ ASSERT_NEAR((Y_OFFSET + 211 * Y_SCALE) * 2, event.getY(0), EPSILON);
ASSERT_EQ(212, event.getPressure(0));
ASSERT_EQ(213, event.getSize(0));
ASSERT_EQ(214 * 2, event.getTouchMajor(0));
@@ -773,18 +801,18 @@
// The x and y axes should have the window transform applied.
const auto newPoint = transform.transform(60, 100);
- ASSERT_EQ(newPoint.x, event.getX(0));
- ASSERT_EQ(newPoint.y, event.getY(0));
+ ASSERT_NEAR(newPoint.x, event.getX(0), EPSILON);
+ ASSERT_NEAR(newPoint.y, event.getY(0), EPSILON);
// The raw values should have the display transform applied.
const auto raw = rawTransform.transform(60, 100);
- ASSERT_EQ(raw.x, event.getRawX(0));
- ASSERT_EQ(raw.y, event.getRawY(0));
+ ASSERT_NEAR(raw.x, event.getRawX(0), EPSILON);
+ ASSERT_NEAR(raw.y, event.getRawY(0), EPSILON);
// Relative values should have the window transform applied without any translation.
const auto rel = transformWithoutTranslation(transform, 42, 96);
- ASSERT_EQ(rel.x, event.getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_X, 0));
- ASSERT_EQ(rel.y, event.getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_Y, 0));
+ ASSERT_NEAR(rel.x, event.getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_X, 0), EPSILON);
+ ASSERT_NEAR(rel.y, event.getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_Y, 0), EPSILON);
}
TEST_F(MotionEventTest, Initialize_SetsClassification) {
@@ -851,4 +879,42 @@
ASSERT_EQ(4, event.getYCursorPosition());
}
+TEST_F(MotionEventTest, CoordinatesAreRoundedAppropriately) {
+ // These are specifically integral values, since we are testing for rounding.
+ const vec2 EXPECTED{400.f, 700.f};
+
+ // Pick a transform such that transforming the point with its inverse and bringing that
+ // back to the original coordinate space results in a non-zero error amount due to the
+ // nature of floating point arithmetics. This can happen when the display is scaled.
+ // For example, the 'adb shell wm size' command can be used to set an override for the
+ // logical display size, which could result in the display being scaled.
+ constexpr float scale = 720.f / 1080.f;
+ ui::Transform transform;
+ transform.set(scale, 0, 0, scale);
+ ASSERT_NE(EXPECTED, transform.transform(transform.inverse().transform(EXPECTED)));
+
+ // Store the inverse-transformed values in the motion event.
+ const vec2 rawCoords = transform.inverse().transform(EXPECTED);
+ PointerCoords pc{};
+ pc.setAxisValue(AMOTION_EVENT_AXIS_X, rawCoords.x);
+ pc.setAxisValue(AMOTION_EVENT_AXIS_Y, rawCoords.y);
+ PointerProperties pp{};
+ MotionEvent event;
+ event.initialize(InputEvent::nextId(), 2, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID, HMAC,
+ AMOTION_EVENT_ACTION_MOVE, 0, AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED,
+ AMOTION_EVENT_EDGE_FLAG_TOP, AMETA_ALT_ON, AMOTION_EVENT_BUTTON_PRIMARY,
+ MotionClassification::NONE, transform, 2.0f, 2.1f, rawCoords.x, rawCoords.y,
+ transform, ARBITRARY_DOWN_TIME, ARBITRARY_EVENT_TIME, 1, &pp, &pc);
+
+ // When using the getters from the MotionEvent to obtain the coordinates, the transformed
+ // values should be rounded by an appropriate amount so that they now precisely equal the
+ // original coordinates.
+ ASSERT_EQ(EXPECTED.x, event.getX(0));
+ ASSERT_EQ(EXPECTED.y, event.getY(0));
+ ASSERT_EQ(EXPECTED.x, event.getRawX(0));
+ ASSERT_EQ(EXPECTED.y, event.getRawY(0));
+ ASSERT_EQ(EXPECTED.x, event.getXCursorPosition());
+ ASSERT_EQ(EXPECTED.y, event.getYCursorPosition());
+}
+
} // namespace android
diff --git a/libs/input/tests/InputPublisherAndConsumer_test.cpp b/libs/input/tests/InputPublisherAndConsumer_test.cpp
index 05bc0bc..8393e99 100644
--- a/libs/input/tests/InputPublisherAndConsumer_test.cpp
+++ b/libs/input/tests/InputPublisherAndConsumer_test.cpp
@@ -32,6 +32,8 @@
namespace android {
+constexpr static float EPSILON = MotionEvent::ROUNDING_PRECISION;
+
class InputPublisherAndConsumerTest : public testing::Test {
protected:
std::shared_ptr<InputChannel> mServerChannel, mClientChannel;
@@ -233,10 +235,10 @@
EXPECT_EQ(yOffset, motionEvent->getYOffset());
EXPECT_EQ(xPrecision, motionEvent->getXPrecision());
EXPECT_EQ(yPrecision, motionEvent->getYPrecision());
- EXPECT_EQ(xCursorPosition, motionEvent->getRawXCursorPosition());
- EXPECT_EQ(yCursorPosition, motionEvent->getRawYCursorPosition());
- EXPECT_EQ(xCursorPosition * xScale + xOffset, motionEvent->getXCursorPosition());
- EXPECT_EQ(yCursorPosition * yScale + yOffset, motionEvent->getYCursorPosition());
+ EXPECT_NEAR(xCursorPosition, motionEvent->getRawXCursorPosition(), EPSILON);
+ EXPECT_NEAR(yCursorPosition, motionEvent->getRawYCursorPosition(), EPSILON);
+ EXPECT_NEAR(xCursorPosition * xScale + xOffset, motionEvent->getXCursorPosition(), EPSILON);
+ EXPECT_NEAR(yCursorPosition * yScale + yOffset, motionEvent->getYCursorPosition(), EPSILON);
EXPECT_EQ(rawTransform, motionEvent->getRawTransform());
EXPECT_EQ(downTime, motionEvent->getDownTime());
EXPECT_EQ(eventTime, motionEvent->getEventTime());
@@ -249,10 +251,12 @@
EXPECT_EQ(pointerProperties[i].toolType, motionEvent->getToolType(i));
const auto& pc = pointerCoords[i];
- EXPECT_EQ(pc.getX() * rawXScale + rawXOffset, motionEvent->getRawX(i));
- EXPECT_EQ(pc.getY() * rawYScale + rawYOffset, motionEvent->getRawY(i));
- EXPECT_EQ(pc.getX() * xScale + xOffset, motionEvent->getX(i));
- EXPECT_EQ(pc.getY() * yScale + yOffset, motionEvent->getY(i));
+ EXPECT_EQ(pc, motionEvent->getSamplePointerCoords()[i]);
+
+ EXPECT_NEAR(pc.getX() * rawXScale + rawXOffset, motionEvent->getRawX(i), EPSILON);
+ EXPECT_NEAR(pc.getY() * rawYScale + rawYOffset, motionEvent->getRawY(i), EPSILON);
+ EXPECT_NEAR(pc.getX() * xScale + xOffset, motionEvent->getX(i), EPSILON);
+ EXPECT_NEAR(pc.getY() * yScale + yOffset, motionEvent->getY(i), EPSILON);
EXPECT_EQ(pc.getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), motionEvent->getPressure(i));
EXPECT_EQ(pc.getAxisValue(AMOTION_EVENT_AXIS_SIZE), motionEvent->getSize(i));
EXPECT_EQ(pc.getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), motionEvent->getTouchMajor(i));
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index bcef62c..e860e3c 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -128,10 +128,10 @@
const auto& motionEvent = static_cast<const MotionEvent&>(event);
EXPECT_EQ(motionEvent.getEventTime(), args.eventTime);
EXPECT_EQ(motionEvent.getAction(), args.action);
- EXPECT_EQ(motionEvent.getX(0), point.x);
- EXPECT_EQ(motionEvent.getY(0), point.y);
- EXPECT_EQ(motionEvent.getRawX(0), point.x);
- EXPECT_EQ(motionEvent.getRawY(0), point.y);
+ EXPECT_NEAR(motionEvent.getX(0), point.x, MotionEvent::ROUNDING_PRECISION);
+ EXPECT_NEAR(motionEvent.getY(0), point.y, MotionEvent::ROUNDING_PRECISION);
+ EXPECT_NEAR(motionEvent.getRawX(0), point.x, MotionEvent::ROUNDING_PRECISION);
+ EXPECT_NEAR(motionEvent.getRawY(0), point.y, MotionEvent::ROUNDING_PRECISION);
});
}