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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.launcher2;
import com.android.launcher.R;
import android.animation.Animator;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.Animator.AnimatorListener;
import android.content.ComponentName;
import android.content.Context;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffColorFilter;
import android.util.AttributeSet;
import android.view.View;
/**
* Implements a DropTarget which allows applications to be dropped on it,
* in order to launch the application info for that app.
*/
public class ApplicationInfoDropTarget extends IconDropTarget {
private static final int sFadeInAnimationDuration = 200;
private static final int sFadeOutAnimationDuration = 100;
private AnimatorSet mFadeAnimator;
public ApplicationInfoDropTarget(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public ApplicationInfoDropTarget(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// Set the hover paint colour
int colour = getContext().getResources().getColor(R.color.app_info_filter);
mHoverPaint.setColorFilter(new PorterDuffColorFilter(colour, PorterDuff.Mode.SRC_ATOP));
if (LauncherApplication.isScreenLarge()) {
// For the application info drop target, we just ignore the left padding since we don't want
// to overlap with the delete zone padding
int tb = getResources().getDimensionPixelSize(
R.dimen.delete_zone_vertical_drag_padding);
int lr = getResources().getDimensionPixelSize(
R.dimen.delete_zone_horizontal_drag_padding);
setDragPadding(tb, lr, tb, 0);
}
}
public boolean acceptDrop(DragSource source, int x, int y, int xOffset, int yOffset,
DragView dragView, Object dragInfo) {
// acceptDrop is called just before onDrop. We do the work here, rather than
// in onDrop, because it allows us to reject the drop (by returning false)
// so that the object being dragged isn't removed from the home screen.
if (getVisibility() != VISIBLE) return false;
ComponentName componentName = null;
if (dragInfo instanceof ApplicationInfo) {
componentName = ((ApplicationInfo)dragInfo).componentName;
} else if (dragInfo instanceof ShortcutInfo) {
componentName = ((ShortcutInfo)dragInfo).intent.getComponent();
}
mLauncher.startApplicationDetailsActivity(componentName);
return false;
}
public void onDragEnter(DragSource source, int x, int y, int xOffset, int yOffset,
DragView dragView, Object dragInfo) {
if (!mDragAndDropEnabled) return;
dragView.setPaint(mHoverPaint);
}
public void onDragExit(DragSource source, int x, int y, int xOffset, int yOffset,
DragView dragView, Object dragInfo) {
if (!mDragAndDropEnabled) return;
dragView.setPaint(null);
}
public void onDragStart(DragSource source, Object info, int dragAction) {
if (info != null && mDragAndDropEnabled) {
final int itemType = ((ItemInfo)info).itemType;
mActive = (itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION);
if (mActive) {
// Fade in this icon
if (mFadeAnimator != null) mFadeAnimator.cancel();
mFadeAnimator = new AnimatorSet();
Animator infoButtonAnimator = ObjectAnimator.ofFloat(this, "alpha", 0.0f, 1.0f);
infoButtonAnimator.setDuration(sFadeInAnimationDuration);
mFadeAnimator.play(infoButtonAnimator);
setVisibility(VISIBLE);
// Fade out the overlapping views
if (mOverlappingViews != null) {
for (View view : mOverlappingViews) {
ObjectAnimator oa = ObjectAnimator.ofFloat(view, "alpha", 0.0f);
oa.setDuration(sFadeOutAnimationDuration);
mFadeAnimator.play(oa);
}
mFadeAnimator.addListener(new AnimatorListener() {
public void onAnimationStart(Animator animation) {}
public void onAnimationRepeat(Animator animation) {}
public void onAnimationEnd(Animator animation) {
onEndOrCancel();
}
public void onAnimationCancel(Animator animation) {
onEndOrCancel();
}
private void onEndOrCancel() {
for (View view : mOverlappingViews) {
view.setVisibility(INVISIBLE);
}
mFadeAnimator = null;
}
});
}
mFadeAnimator.start();
}
}
}
public void onDragEnd() {
if (!mDragAndDropEnabled) return;
if (mActive) mActive = false;
// Fade out this icon
if (mFadeAnimator != null) mFadeAnimator.cancel();
mFadeAnimator = new AnimatorSet();
Animator infoButtonAnimator = ObjectAnimator.ofFloat(this, "alpha", 0.0f);
infoButtonAnimator.setDuration(sFadeOutAnimationDuration);
mFadeAnimator.addListener(new AnimatorListener() {
public void onAnimationStart(Animator animation) {}
public void onAnimationRepeat(Animator animation) {}
public void onAnimationEnd(Animator animation) {
onEndOrCancel();
}
public void onAnimationCancel(Animator animation) {
onEndOrCancel();
}
private void onEndOrCancel() {
setVisibility(GONE);
mFadeAnimator = null;
}
});
mFadeAnimator.play(infoButtonAnimator);
// Fade in the overlapping views
if (mOverlappingViews != null) {
for (View view : mOverlappingViews) {
// Check whether the views are enabled first, before trying to fade them in
if (view.isEnabled()) {
ObjectAnimator oa = ObjectAnimator.ofFloat(view, "alpha", 1.0f);
oa.setDuration(sFadeInAnimationDuration);
mFadeAnimator.play(oa);
view.setVisibility(VISIBLE);
}
}
}
mFadeAnimator.start();
}
}
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