ScaleXSpan.java revision 9066cfe9886ac131c34d59ed0e2d287b0e3c0087 
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
17package android.text.style;
18
19import android.os.Parcel;
20import android.text.ParcelableSpan;
21import android.text.TextPaint;
22import android.text.TextUtils;
23
24public class ScaleXSpan extends MetricAffectingSpan implements ParcelableSpan {
25
26	private final float mProportion;
27
28	public ScaleXSpan(float proportion) {
29		mProportion = proportion;
30	}
31
32    public ScaleXSpan(Parcel src) {
33        mProportion = src.readFloat();
34    }
35
36    public int getSpanTypeId() {
37        return TextUtils.SCALE_X_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 getScaleX() {
49		return mProportion;
50	}
51
52	@Override
53	public void updateDrawState(TextPaint ds) {
54		ds.setTextScaleX(ds.getTextScaleX() * mProportion);
55	}
56
57	@Override
58	public void updateMeasureState(TextPaint ds) {
59		ds.setTextScaleX(ds.getTextScaleX() * mProportion);
60	}
61}
62