/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.shortcuts;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Point;
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import android.graphics.Rect;
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import android.graphics.drawable.Drawable;
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import android.view.View;
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import com.android.launcher3.Launcher;
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import com.android.launcher3.Utilities;
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import com.android.launcher3.graphics.DragPreviewProvider;
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/**
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* Extension of {@link DragPreviewProvider} which generates bitmaps scaled to the default icon size.
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*/
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public class ShortcutDragPreviewProvider extends DragPreviewProvider {
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private final Point mPositionShift;
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public ShortcutDragPreviewProvider(View icon, Point shift) {
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super(icon);
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mPositionShift = shift;
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}
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public Bitmap createDragBitmap() {
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Drawable d = mView.getBackground();
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Rect bounds = getDrawableBounds(d);
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int size = Launcher.getLauncher(mView.getContext()).getDeviceProfile().iconSizePx;
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final Bitmap b = Bitmap.createBitmap(
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size + blurSizeOutline,
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size + blurSizeOutline,
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Bitmap.Config.ARGB_8888);
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Canvas canvas = new Canvas(b);
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canvas.translate(blurSizeOutline / 2, blurSizeOutline / 2);
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canvas.scale(((float) size) / bounds.width(), ((float) size) / bounds.height(), 0, 0);
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canvas.translate(bounds.left, bounds.top);
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d.draw(canvas);
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return b;
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}
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@Override
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public float getScaleAndPosition(Bitmap preview, int[] outPos) {
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Launcher launcher = Launcher.getLauncher(mView.getContext());
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int iconSize = getDrawableBounds(mView.getBackground()).width();
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float scale = launcher.getDragLayer().getLocationInDragLayer(mView, outPos);
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int iconLeft = mView.getPaddingStart();
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if (Utilities.isRtl(mView.getResources())) {
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iconLeft = mView.getWidth() - iconSize - iconLeft;
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}
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outPos[0] += Math.round(scale * iconLeft + (scale * iconSize - preview.getWidth()) / 2 +
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mPositionShift.x);
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outPos[1] += Math.round((scale * mView.getHeight() - preview.getHeight()) / 2
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+ mPositionShift.y);
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float size = launcher.getDeviceProfile().iconSizePx;
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return scale * iconSize / size;
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}
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}
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