| /* |
| * 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. |
| * <p> |
| * For example, the size of the text can be changed to 55dp like this: |
| * <pre>{@code |
| * SpannableString string = new SpannableString("Text with absolute size span"); |
| *string.setSpan(new AbsoluteSizeSpan(55, true), 10, 23, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);}</pre> |
| * <img src="{@docRoot}reference/android/images/text/style/absolutesizespan.png" /> |
| * <figcaption>Text with text size updated.</figcaption> |
| */ |
| public class AbsoluteSizeSpan extends MetricAffectingSpan implements ParcelableSpan { |
| |
| private final int mSize; |
| private final boolean mDip; |
| |
| /** |
| * Set the text size to <code>size</code> physical pixels. |
| */ |
| public AbsoluteSizeSpan(int size) { |
| this(size, false); |
| } |
| |
| /** |
| * Set the text size to <code>size</code> physical pixels, or to <code>size</code> |
| * device-independent pixels if <code>dip</code> 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 |
| * <code>dip</code> flag passed in {@link #AbsoluteSizeSpan(int, boolean)} |
| * |
| * @return <code>true</code> if the size is in device-independent pixels, <code>false</code> |
| * 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); |
| } |
| } |
| } |