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 
RelativeSizeSpan(float proportion)28     public RelativeSizeSpan(float proportion) {
29         mProportion = proportion;
30     }
31 
RelativeSizeSpan(Parcel src)32     public RelativeSizeSpan(Parcel src) {
33         mProportion = src.readFloat();
34     }
35 
getSpanTypeId()36     public int getSpanTypeId() {
37         return getSpanTypeIdInternal();
38     }
39 
40     /** @hide */
getSpanTypeIdInternal()41     public int getSpanTypeIdInternal() {
42         return TextUtils.RELATIVE_SIZE_SPAN;
43     }
44 
describeContents()45     public int describeContents() {
46         return 0;
47     }
48 
writeToParcel(Parcel dest, int flags)49     public void writeToParcel(Parcel dest, int flags) {
50         writeToParcelInternal(dest, flags);
51     }
52 
53     /** @hide */
writeToParcelInternal(Parcel dest, int flags)54     public void writeToParcelInternal(Parcel dest, int flags) {
55         dest.writeFloat(mProportion);
56     }
57 
getSizeChange()58     public float getSizeChange() {
59         return mProportion;
60     }
61 
62     @Override
updateDrawState(TextPaint ds)63     public void updateDrawState(TextPaint ds) {
64         ds.setTextSize(ds.getTextSize() * mProportion);
65     }
66 
67     @Override
updateMeasureState(TextPaint ds)68     public void updateMeasureState(TextPaint ds) {
69         ds.setTextSize(ds.getTextSize() * mProportion);
70     }
71 }
72