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/*
* Copyright (C) 2010 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.content.res.Resources;
import android.graphics.PointF;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.View;
import android.widget.TextView;
/**
* Implements a DropTarget.
*/
public class ButtonDropTarget extends TextView implements DropTarget, DragController.DragListener {
protected final int mTransitionDuration;
protected Launcher mLauncher;
private int mBottomDragPadding;
protected TextView mText;
protected SearchDropTargetBar mSearchDropTargetBar;
/** Whether this drop target is active for the current drag */
protected boolean mActive;
/** The paint applied to the drag view on hover */
protected int mHoverColor = 0;
public ButtonDropTarget(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public ButtonDropTarget(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
Resources r = getResources();
mTransitionDuration = r.getInteger(R.integer.config_dropTargetBgTransitionDuration);
mBottomDragPadding = r.getDimensionPixelSize(R.dimen.drop_target_drag_padding);
}
void setLauncher(Launcher launcher) {
mLauncher = launcher;
}
public boolean acceptDrop(DragObject d) {
return false;
}
public void setSearchDropTargetBar(SearchDropTargetBar searchDropTargetBar) {
mSearchDropTargetBar = searchDropTargetBar;
}
protected Drawable getCurrentDrawable() {
Drawable[] drawables = getCompoundDrawablesRelative();
for (int i = 0; i < drawables.length; ++i) {
if (drawables[i] != null) {
return drawables[i];
}
}
System.out.println("No drawable, returning null " + this);
return null;
}
public void onDrop(DragObject d) {
}
public void onFlingToDelete(DragObject d, int x, int y, PointF vec) {
// Do nothing
}
public void onDragEnter(DragObject d) {
d.dragView.setColor(mHoverColor);
}
public void onDragOver(DragObject d) {
// Do nothing
}
public void onDragExit(DragObject d) {
d.dragView.setColor(0);
}
public void onDragStart(DragSource source, Object info, int dragAction) {
// Do nothing
}
public boolean isDropEnabled() {
return mActive;
}
public void onDragEnd() {
// Do nothing
}
@Override
public void getHitRectRelativeToDragLayer(android.graphics.Rect outRect) {
super.getHitRect(outRect);
outRect.bottom += mBottomDragPadding;
int[] coords = new int[2];
mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, coords);
outRect.offsetTo(coords[0], coords[1]);
}
private boolean isRtl() {
return (getLayoutDirection() == View.LAYOUT_DIRECTION_RTL);
}
Rect getIconRect(int viewWidth, int viewHeight, int drawableWidth, int drawableHeight) {
DragLayer dragLayer = mLauncher.getDragLayer();
// Find the rect to animate to (the view is center aligned)
Rect to = new Rect();
dragLayer.getViewRectRelativeToSelf(this, to);
final int width = drawableWidth;
final int height = drawableHeight;
final int left;
final int right;
if (isRtl()) {
right = to.right - getPaddingRight();
left = right - width;
} else {
left = to.left + getPaddingLeft();
right = left + width;
}
final int top = to.top + (getMeasuredHeight() - height) / 2;
final int bottom = top + height;
to.set(left, top, right, bottom);
// Center the destination rect about the trash icon
final int xOffset = (int) -(viewWidth - width) / 2;
final int yOffset = (int) -(viewHeight - height) / 2;
to.offset(xOffset, yOffset);
return to;
}
public void getLocationInDragLayer(int[] loc) {
mLauncher.getDragLayer().getLocationInDragLayer(this, loc);
}
}
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