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 getSpanTypeIdInternal();
38    }
39
40    /** @hide */
41    public int getSpanTypeIdInternal() {
42        return TextUtils.SCALE_X_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 getScaleX() {
59        return mProportion;
60    }
61
62    @Override
63    public void updateDrawState(TextPaint ds) {
64        ds.setTextScaleX(ds.getTextScaleX() * mProportion);
65    }
66
67    @Override
68    public void updateMeasureState(TextPaint ds) {
69        ds.setTextScaleX(ds.getTextScaleX() * mProportion);
70    }
71}
72