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 getSpanTypeIdInternal(); 38 } 39 40 /** @hide */ 41 public int getSpanTypeIdInternal() { 42 return TextUtils.RELATIVE_SIZE_SPAN; 43 } 44 45 public int describeContents() { 46 return 0; 47 } 48 49 public void writeToParcel(Parcel dest, int flags) { 50 writeToParcelInternal(dest, flags); 51 } 52 53 /** @hide */ 54 public void writeToParcelInternal(Parcel dest, int flags) { 55 dest.writeFloat(mProportion); 56 } 57 58 public float getSizeChange() { 59 return mProportion; 60 } 61 62 @Override 63 public void updateDrawState(TextPaint ds) { 64 ds.setTextSize(ds.getTextSize() * mProportion); 65 } 66 67 @Override 68 public void updateMeasureState(TextPaint ds) { 69 ds.setTextSize(ds.getTextSize() * mProportion); 70 } 71 } 72
