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/*
* Copyright (C) 2016 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.shortcuts;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.view.View;
import android.widget.ImageView;
import com.android.launcher3.BubbleTextView;
import com.android.launcher3.HolographicOutlineHelper;
import com.android.launcher3.Launcher;
import com.android.launcher3.R;
import com.android.launcher3.Utilities;
import com.android.launcher3.graphics.DragPreviewProvider;
/**
* Extension of {@link DragPreviewProvider} which generates bitmaps scaled to the default icon size.
*/
public class ShortcutDragPreviewProvider extends DragPreviewProvider {
private final Point mPositionShift;
public ShortcutDragPreviewProvider(View icon, Point shift) {
super(icon);
mPositionShift = shift;
}
@Override
public Bitmap createDragOutline(Canvas canvas) {
Bitmap b = drawScaledPreview(canvas);
final int outlineColor = mView.getResources().getColor(R.color.outline_color);
HolographicOutlineHelper.obtain(mView.getContext())
.applyExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor);
canvas.setBitmap(null);
return b;
}
@Override
public Bitmap createDragBitmap(Canvas canvas) {
Bitmap b = drawScaledPreview(canvas);
canvas.setBitmap(null);
return b;
}
private Bitmap drawScaledPreview(Canvas canvas) {
Drawable d = mView.getBackground();
Rect bounds = getDrawableBounds(d);
int size = Launcher.getLauncher(mView.getContext()).getDeviceProfile().iconSizePx;
final Bitmap b = Bitmap.createBitmap(
size + DRAG_BITMAP_PADDING,
size + DRAG_BITMAP_PADDING,
Bitmap.Config.ARGB_8888);
canvas.setBitmap(b);
canvas.save(Canvas.MATRIX_SAVE_FLAG);
canvas.translate(DRAG_BITMAP_PADDING / 2, DRAG_BITMAP_PADDING / 2);
canvas.scale(((float) size) / bounds.width(), ((float) size) / bounds.height(), 0, 0);
canvas.translate(bounds.left, bounds.top);
d.draw(canvas);
canvas.restore();
return b;
}
@Override
public float getScaleAndPosition(Bitmap preview, int[] outPos) {
Launcher launcher = Launcher.getLauncher(mView.getContext());
int iconSize = getDrawableBounds(mView.getBackground()).width();
float scale = launcher.getDragLayer().getLocationInDragLayer(mView, outPos);
int iconLeft = mView.getPaddingStart();
if (Utilities.isRtl(mView.getResources())) {
iconLeft = mView.getWidth() - iconSize - iconLeft;
}
outPos[0] += Math.round(scale * iconLeft + (scale * iconSize - preview.getWidth()) / 2 +
mPositionShift.x);
outPos[1] += Math.round((scale * mView.getHeight() - preview.getHeight()) / 2
+ mPositionShift.y);
float size = launcher.getDeviceProfile().iconSizePx;
return scale * iconSize / size;
}
}
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