1 /* 2 * Copyright (C) 2006 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 android.text.style; 18 19 import android.os.Parcel; 20 import android.text.ParcelableSpan; 21 import android.text.TextPaint; 22 import android.text.TextUtils; 23 24 public class RelativeSizeSpan extends MetricAffectingSpan implements ParcelableSpan { 25 26 private final float mProportion; 27 28 public RelativeSizeSpan(float proportion) { 29 mProportion = proportion; 30 } 31 32 public RelativeSizeSpan(Parcel src) { 33 mProportion = src.readFloat(); 34 } 35 36 public int getSpanTypeId() { 37 return TextUtils.RELATIVE_SIZE_SPAN; 38 } 39 40 public int describeContents() { 41 return 0; 42 } 43 44 public void writeToParcel(Parcel dest, int flags) { 45 dest.writeFloat(mProportion); 46 } 47 48 public float getSizeChange() { 49 return mProportion; 50 } 51 52 @Override 53 public void updateDrawState(TextPaint ds) { 54 ds.setTextSize(ds.getTextSize() * mProportion); 55 } 56 57 @Override 58 public void updateMeasureState(TextPaint ds) { 59 ds.setTextSize(ds.getTextSize() * mProportion); 60 } 61 } 62
