1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.inputmethod.keyboard.internal; 18 19 import android.content.res.TypedArray; 20 21 import com.android.inputmethod.latin.R; 22 23 /** 24 * This class holds parameters to control how a gesture stroke is sampled and drawn on the screen. 25 * 26 * @attr ref R.styleable#MainKeyboardView_gestureTrailMinSamplingDistance 27 * @attr ref R.styleable#MainKeyboardView_gestureTrailMaxInterpolationAngularThreshold 28 * @attr ref R.styleable#MainKeyboardView_gestureTrailMaxInterpolationDistanceThreshold 29 * @attr ref R.styleable#MainKeyboardView_gestureTrailMaxInterpolationSegments 30 */ 31 public final class GestureStrokeDrawingParams { 32 public final double mMinSamplingDistance; // in pixel 33 public final double mMaxInterpolationAngularThreshold; // in radian 34 public final double mMaxInterpolationDistanceThreshold; // in pixel 35 public final int mMaxInterpolationSegments; 36 37 private static final float DEFAULT_MIN_SAMPLING_DISTANCE = 0.0f; // dp 38 private static final int DEFAULT_MAX_INTERPOLATION_ANGULAR_THRESHOLD = 15; // in degree 39 private static final float DEFAULT_MAX_INTERPOLATION_DISTANCE_THRESHOLD = 0.0f; // dp 40 private static final int DEFAULT_MAX_INTERPOLATION_SEGMENTS = 4; 41 42 public GestureStrokeDrawingParams(final TypedArray mainKeyboardViewAttr) { 43 mMinSamplingDistance = mainKeyboardViewAttr.getDimension( 44 R.styleable.MainKeyboardView_gestureTrailMinSamplingDistance, 45 DEFAULT_MIN_SAMPLING_DISTANCE); 46 final int interpolationAngularDegree = mainKeyboardViewAttr.getInteger(R.styleable 47 .MainKeyboardView_gestureTrailMaxInterpolationAngularThreshold, 0); 48 mMaxInterpolationAngularThreshold = (interpolationAngularDegree <= 0) 49 ? Math.toRadians(DEFAULT_MAX_INTERPOLATION_ANGULAR_THRESHOLD) 50 : Math.toRadians(interpolationAngularDegree); 51 mMaxInterpolationDistanceThreshold = mainKeyboardViewAttr.getDimension(R.styleable 52 .MainKeyboardView_gestureTrailMaxInterpolationDistanceThreshold, 53 DEFAULT_MAX_INTERPOLATION_DISTANCE_THRESHOLD); 54 mMaxInterpolationSegments = mainKeyboardViewAttr.getInteger( 55 R.styleable.MainKeyboardView_gestureTrailMaxInterpolationSegments, 56 DEFAULT_MAX_INTERPOLATION_SEGMENTS); 57 } 58 } 59
