Allow persistence of input device calibration (d6396d67) · Commits · e / os / android_frameworks_base

core/java/android/hardware/input/IInputManager.aidl

+6 −0

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@ package android.hardware.input;
		import android.hardware.input.InputDeviceIdentifier;
		import android.hardware.input.KeyboardLayout;
		import android.hardware.input.IInputDevicesChangedListener;
		import android.hardware.input.TouchCalibration;
		import android.os.IBinder;
		import android.view.InputDevice;
		import android.view.InputEvent;
		@@ -39,6 +40,11 @@ interface IInputManager {
		// applications, the caller must have the INJECT_EVENTS permission.
		boolean injectInputEvent(in InputEvent ev, int mode);

		// Calibrate input device position
		TouchCalibration getTouchCalibrationForInputDevice(String inputDeviceDescriptor);
		void setTouchCalibrationForInputDevice(String inputDeviceDescriptor,
		in TouchCalibration calibration);

		// Keyboard layouts configuration.
		KeyboardLayout[] getKeyboardLayouts();
		KeyboardLayout getKeyboardLayout(String keyboardLayoutDescriptor);

core/java/android/hardware/input/InputManager.java

+38 −0

Original line number	Diff line number	Diff line
		@@ -499,6 +499,44 @@ public final class InputManager {
		}
		}

		/**
		* Gets the TouchCalibration applied to the specified input device's coordinates.
		*
		* @param inputDeviceDescriptor The input device descriptor.
		* @return The TouchCalibration currently assigned for use with the given
		* input device. If none is set, an identity TouchCalibration is returned.
		*
		* @hide
		*/
		public TouchCalibration getTouchCalibration(String inputDeviceDescriptor) {
		try {
		return mIm.getTouchCalibrationForInputDevice(inputDeviceDescriptor);
		} catch (RemoteException ex) {
		Log.w(TAG, "Could not get calibration matrix for input device.", ex);
		return TouchCalibration.IDENTITY;
		}
		}

		/**
		* Sets the TouchCalibration to apply to the specified input device's coordinates.
		* <p>
		* This method may have the side-effect of causing the input device in question
		* to be reconfigured. Requires {@link android.Manifest.permissions.SET_INPUT_CALIBRATION}.
		* </p>
		*
		* @param inputDeviceDescriptor The input device descriptor.
		* @param calibration The calibration to be applied
		*
		* @hide
		*/
		public void setTouchCalibration(String inputDeviceDescriptor, TouchCalibration calibration) {
		try {
		mIm.setTouchCalibrationForInputDevice(inputDeviceDescriptor, calibration);
		} catch (RemoteException ex) {
		Log.w(TAG, "Could not set calibration matrix for input device.", ex);
		}
		}

		/**
		* Gets the mouse pointer speed.
		* <p>

core/java/android/hardware/input/TouchCalibration.aidl

0 → 100644

+19 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2014 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.hardware.input;

		parcelable TouchCalibration;

core/java/android/hardware/input/TouchCalibration.java

0 → 100644

+126 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2014 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.hardware.input;

		import android.os.Parcel;
		import android.os.Parcelable;

		/**
		* Encapsulates calibration data for input devices.
		*
		* @hide
		*/
		public class TouchCalibration implements Parcelable {

		public static final TouchCalibration IDENTITY = new TouchCalibration();

		public static final Parcelable.Creator<TouchCalibration> CREATOR
		= new Parcelable.Creator<TouchCalibration>() {
		public TouchCalibration createFromParcel(Parcel in) {
		return new TouchCalibration(in);
		}

		public TouchCalibration[] newArray(int size) {
		return new TouchCalibration[size];
		}
		};

		private final float mXScale, mXYMix, mXOffset;
		private final float mYXMix, mYScale, mYOffset;

		/**
		* Create a new TouchCalibration initialized to the identity transformation.
		*/
		public TouchCalibration() {
		this(1,0,0,0,1,0);
		}

		/**
		* Create a new TouchCalibration from affine transformation paramters.
		* @param xScale Influence of input x-axis value on output x-axis value.
		* @param xyMix Influence of input y-axis value on output x-axis value.
		* @param xOffset Constant offset to be applied to output x-axis value.
		* @param yXMix Influence of input x-axis value on output y-axis value.
		* @param yScale Influence of input y-axis value on output y-axis value.
		* @param yOffset Constant offset to be applied to output y-axis value.
		*/
		public TouchCalibration(float xScale, float xyMix, float xOffset,
		float yxMix, float yScale, float yOffset) {
		mXScale = xScale;
		mXYMix = xyMix;
		mXOffset = xOffset;
		mYXMix = yxMix;
		mYScale = yScale;
		mYOffset = yOffset;
		}

		public TouchCalibration(Parcel in) {
		mXScale = in.readFloat();
		mXYMix = in.readFloat();
		mXOffset = in.readFloat();
		mYXMix = in.readFloat();
		mYScale = in.readFloat();
		mYOffset = in.readFloat();
		}

		@Override
		public void writeToParcel(Parcel dest, int flags) {
		dest.writeFloat(mXScale);
		dest.writeFloat(mXYMix);
		dest.writeFloat(mXOffset);
		dest.writeFloat(mYXMix);
		dest.writeFloat(mYScale);
		dest.writeFloat(mYOffset);
		}

		@Override
		public int describeContents() {
		return 0;
		}

		public float[] getAffineTransform() {
		return new float[] { mXScale, mXYMix, mXOffset, mYXMix, mYScale, mYOffset };
		}

		@Override
		public boolean equals(Object obj) {
		if (obj == this) {
		return true;
		} else if (obj instanceof TouchCalibration) {
		TouchCalibration cal = (TouchCalibration)obj;

		return (cal.mXScale == mXScale) &&
		(cal.mXYMix == mXYMix) &&
		(cal.mXOffset == mXOffset) &&
		(cal.mYXMix == mYXMix) &&
		(cal.mYScale == mYScale) &&
		(cal.mYOffset == mYOffset);
		} else {
		return false;
		}
		}

		@Override
		public int hashCode() {
		return Float.floatToIntBits(mXScale) ^
		Float.floatToIntBits(mXYMix) ^
		Float.floatToIntBits(mXOffset) ^
		Float.floatToIntBits(mYXMix) ^
		Float.floatToIntBits(mYScale) ^
		Float.floatToIntBits(mYOffset);
		}
		}

core/res/AndroidManifest.xml

+8 −0

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		@@ -2069,6 +2069,14 @@
		android:description="@string/permdesc_setPointerSpeed"
		android:protectionLevel="signature" />

		<!-- Allows low-level access to setting input device calibration.
		<p>Not for use by normal applications.
		@hide -->
		<permission android:name="android.permission.SET_INPUT_CALIBRATION"
		android:label="@string/permlab_setInputCalibration"
		android:description="@string/permdesc_setInputCalibration"
		android:protectionLevel="signature" />

		<!-- Allows low-level access to setting the keyboard layout.
		<p>Not for use by third-party applications.
		@hide -->