/* * Copyright (C) 2008 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.annotation.NonNull; import android.os.Parcel; import android.text.ParcelableSpan; import android.text.TextPaint; import android.text.TextUtils; /** * A span that changes the size of the text it's attached to. *
* For example, the size of the text can be changed to 55dp like this: *
{@code * SpannableString string = new SpannableString("Text with absolute size span"); *string.setSpan(new AbsoluteSizeSpan(55, true), 10, 23, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);}* *
size
physical pixels.
*/
public AbsoluteSizeSpan(int size) {
this(size, false);
}
/**
* Set the text size to size
physical pixels, or to size
* device-independent pixels if dip
is true.
*/
public AbsoluteSizeSpan(int size, boolean dip) {
mSize = size;
mDip = dip;
}
/**
* Creates an {@link AbsoluteSizeSpan} from a parcel.
*/
public AbsoluteSizeSpan(@NonNull Parcel src) {
mSize = src.readInt();
mDip = src.readInt() != 0;
}
@Override
public int getSpanTypeId() {
return getSpanTypeIdInternal();
}
/** @hide */
@Override
public int getSpanTypeIdInternal() {
return TextUtils.ABSOLUTE_SIZE_SPAN;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(@NonNull Parcel dest, int flags) {
writeToParcelInternal(dest, flags);
}
/** @hide */
@Override
public void writeToParcelInternal(@NonNull Parcel dest, int flags) {
dest.writeInt(mSize);
dest.writeInt(mDip ? 1 : 0);
}
/**
* Get the text size. This is in physical pixels if {@link #getDip()} returns false or in
* device-independent pixels if {@link #getDip()} returns true.
*
* @return the text size, either in physical pixels or device-independent pixels.
* @see AbsoluteSizeSpan#AbsoluteSizeSpan(int, boolean)
*/
public int getSize() {
return mSize;
}
/**
* Returns whether the size is in device-independent pixels or not, depending on the
* dip
flag passed in {@link #AbsoluteSizeSpan(int, boolean)}
*
* @return true
if the size is in device-independent pixels, false
* otherwise
*
* @see #AbsoluteSizeSpan(int, boolean)
*/
public boolean getDip() {
return mDip;
}
@Override
public void updateDrawState(@NonNull TextPaint ds) {
if (mDip) {
ds.setTextSize(mSize * ds.density);
} else {
ds.setTextSize(mSize);
}
}
@Override
public void updateMeasureState(@NonNull TextPaint ds) {
if (mDip) {
ds.setTextSize(mSize * ds.density);
} else {
ds.setTextSize(mSize);
}
}
}