59 lines
2.9 KiB
Java
59 lines
2.9 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.keyboard.internal;
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import android.content.res.TypedArray;
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import com.android.inputmethod.latin.R;
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/**
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* This class holds parameters to control how a gesture stroke is sampled and drawn on the screen.
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*
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* @attr ref R.styleable#MainKeyboardView_gestureTrailMinSamplingDistance
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* @attr ref R.styleable#MainKeyboardView_gestureTrailMaxInterpolationAngularThreshold
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* @attr ref R.styleable#MainKeyboardView_gestureTrailMaxInterpolationDistanceThreshold
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* @attr ref R.styleable#MainKeyboardView_gestureTrailMaxInterpolationSegments
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*/
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public final class GestureStrokeDrawingParams {
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public final double mMinSamplingDistance; // in pixel
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public final double mMaxInterpolationAngularThreshold; // in radian
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public final double mMaxInterpolationDistanceThreshold; // in pixel
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public final int mMaxInterpolationSegments;
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private static final float DEFAULT_MIN_SAMPLING_DISTANCE = 0.0f; // dp
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private static final int DEFAULT_MAX_INTERPOLATION_ANGULAR_THRESHOLD = 15; // in degree
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private static final float DEFAULT_MAX_INTERPOLATION_DISTANCE_THRESHOLD = 0.0f; // dp
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private static final int DEFAULT_MAX_INTERPOLATION_SEGMENTS = 4;
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public GestureStrokeDrawingParams(final TypedArray mainKeyboardViewAttr) {
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mMinSamplingDistance = mainKeyboardViewAttr.getDimension(
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R.styleable.MainKeyboardView_gestureTrailMinSamplingDistance,
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DEFAULT_MIN_SAMPLING_DISTANCE);
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final int interpolationAngularDegree = mainKeyboardViewAttr.getInteger(R.styleable
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.MainKeyboardView_gestureTrailMaxInterpolationAngularThreshold, 0);
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mMaxInterpolationAngularThreshold = (interpolationAngularDegree <= 0)
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? Math.toRadians(DEFAULT_MAX_INTERPOLATION_ANGULAR_THRESHOLD)
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: Math.toRadians(interpolationAngularDegree);
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mMaxInterpolationDistanceThreshold = mainKeyboardViewAttr.getDimension(R.styleable
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.MainKeyboardView_gestureTrailMaxInterpolationDistanceThreshold,
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DEFAULT_MAX_INTERPOLATION_DISTANCE_THRESHOLD);
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mMaxInterpolationSegments = mainKeyboardViewAttr.getInteger(
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R.styleable.MainKeyboardView_gestureTrailMaxInterpolationSegments,
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DEFAULT_MAX_INTERPOLATION_SEGMENTS);
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}
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}
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