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/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.text.style;
import android.graphics.Paint;
import android.graphics.Typeface;
import android.os.Parcel;
import android.text.ParcelableSpan;
import android.text.TextPaint;
import android.text.TextUtils;
/**
* Changes the typeface family of the text to which the span is attached.
*/
public class TypefaceSpan extends MetricAffectingSpan implements ParcelableSpan {
private final String mFamily;
/**
* @param family The font family for this typeface. Examples include
* "monospace", "serif", and "sans-serif".
*/
public TypefaceSpan(String family) {
mFamily = family;
}
public TypefaceSpan(Parcel src) {
mFamily = src.readString();
}
public int getSpanTypeId() {
return TextUtils.TYPEFACE_SPAN;
}
public int describeContents() {
return 0;
}
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(mFamily);
}
/**
* Returns the font family name.
*/
public String getFamily() {
return mFamily;
}
@Override
public void updateDrawState(TextPaint ds) {
apply(ds, mFamily);
}
@Override
public void updateMeasureState(TextPaint paint) {
apply(paint, mFamily);
}
private static void apply(Paint paint, String family) {
int oldStyle;
Typeface old = paint.getTypeface();
if (old == null) {
oldStyle = 0;
} else {
oldStyle = old.getStyle();
}
Typeface tf = Typeface.create(family, oldStyle);
int fake = oldStyle & ~tf.getStyle();
if ((fake & Typeface.BOLD) != 0) {
paint.setFakeBoldText(true);
}
if ((fake & Typeface.ITALIC) != 0) {
paint.setTextSkewX(-0.25f);
}
paint.setTypeface(tf);
}
}
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