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Diffstat (limited to 'src/com/android/launcher3/FastBitmapView.java')
-rw-r--r-- | src/com/android/launcher3/FastBitmapView.java | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/com/android/launcher3/FastBitmapView.java b/src/com/android/launcher3/FastBitmapView.java new file mode 100644 index 000000000..0937eb75e --- /dev/null +++ b/src/com/android/launcher3/FastBitmapView.java @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2014 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 com.android.launcher3; + +import android.content.Context; +import android.graphics.Bitmap; +import android.graphics.Canvas; +import android.graphics.Paint; +import android.view.View; + +public class FastBitmapView extends View { + + private final Paint mPaint = new Paint(Paint.FILTER_BITMAP_FLAG); + private Bitmap mBitmap; + + public FastBitmapView(Context context) { + super(context); + } + + /** + * Applies the new bitmap. + * @return true if the view was invalidated. + */ + public boolean setBitmap(Bitmap b) { + if (b != mBitmap){ + if (mBitmap != null) { + invalidate(0, 0, mBitmap.getWidth(), mBitmap.getHeight()); + } + mBitmap = b; + if (mBitmap != null) { + invalidate(0, 0, mBitmap.getWidth(), mBitmap.getHeight()); + } + return true; + } + return false; + } + + @Override + protected void onDraw(Canvas canvas) { + if (mBitmap != null) { + canvas.drawBitmap(mBitmap, 0, 0, mPaint); + } + } +} |