| /* |
| * 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.MaskFilter; |
| import android.text.TextPaint; |
| /** |
| * Span that allows setting a {@link MaskFilter} to the text it's attached to. |
| * <p> |
| * For example, to blur a text, a {@link android.graphics.BlurMaskFilter} can be used: |
| * <pre> |
| * MaskFilter blurMask = new BlurMaskFilter(5f, BlurMaskFilter.Blur.NORMAL); |
| * SpannableString string = new SpannableString("Text with blur mask"); |
| * string.setSpan(new MaskFilterSpan(blurMask), 10, 15, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| * </pre> |
| * <img src="{@docRoot}reference/android/images/text/style/maskfilterspan.png" /> |
| * <figcaption>Text blurred with the <code>MaskFilterSpan</code>.</figcaption> |
| */ |
| public class MaskFilterSpan extends CharacterStyle implements UpdateAppearance { |
| |
| private MaskFilter mFilter; |
| |
| /** |
| * Creates a {@link MaskFilterSpan} from a {@link MaskFilter}. |
| * |
| * @param filter the filter to be applied to the <code>TextPaint</code> |
| */ |
| public MaskFilterSpan(MaskFilter filter) { |
| mFilter = filter; |
| } |
| |
| /** |
| * Return the mask filter for this span. |
| * |
| * @return the mask filter for this span |
| */ |
| public MaskFilter getMaskFilter() { |
| return mFilter; |
| } |
| |
| @Override |
| public void updateDrawState(TextPaint ds) { |
| ds.setMaskFilter(mFilter); |
| } |
| } |