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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 android.animation.ObjectAnimator;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.widget.Checkable;
import android.widget.TextView;
import com.android.launcher.R;
/**
* An icon on a PagedView, specifically for items in the launcher's paged view (with compound
* drawables on the top).
*/
public class PagedViewIcon extends TextView implements Checkable {
private static final String TAG = "PagedViewIcon";
// holographic outline
private final Paint mPaint = new Paint();
private Bitmap mCheckedOutline;
private Bitmap mHolographicOutline;
private Bitmap mIcon;
private int mAlpha = 255;
private int mHolographicAlpha;
private boolean mIsChecked;
private ObjectAnimator mCheckedAlphaAnimator;
private float mCheckedAlpha = 1.0f;
private int mCheckedFadeInDuration;
private int mCheckedFadeOutDuration;
HolographicPagedViewIcon mHolographicOutlineView;
private HolographicOutlineHelper mHolographicOutlineHelper;
public PagedViewIcon(Context context) {
this(context, null);
}
public PagedViewIcon(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public PagedViewIcon(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// Set up fade in/out constants
final Resources r = context.getResources();
final int alpha = r.getInteger(R.integer.config_dragAppsCustomizeIconFadeAlpha);
if (alpha > 0) {
mCheckedAlpha = r.getInteger(R.integer.config_dragAppsCustomizeIconFadeAlpha) / 256.0f;
mCheckedFadeInDuration =
r.getInteger(R.integer.config_dragAppsCustomizeIconFadeInDuration);
mCheckedFadeOutDuration =
r.getInteger(R.integer.config_dragAppsCustomizeIconFadeOutDuration);
}
mHolographicOutlineView = new HolographicPagedViewIcon(context, this);
}
protected HolographicPagedViewIcon getHolographicOutlineView() {
return mHolographicOutlineView;
}
protected Bitmap getHolographicOutline() {
return mHolographicOutline;
}
public void applyFromApplicationInfo(ApplicationInfo info, boolean scaleUp,
HolographicOutlineHelper holoOutlineHelper) {
mHolographicOutlineHelper = holoOutlineHelper;
mIcon = info.iconBitmap;
setCompoundDrawablesWithIntrinsicBounds(null, new FastBitmapDrawable(mIcon), null, null);
setText(info.title);
setTag(info);
}
public void setHolographicOutline(Bitmap holoOutline) {
mHolographicOutline = holoOutline;
getHolographicOutlineView().invalidate();
}
@Override
public void setAlpha(float alpha) {
final float viewAlpha = HolographicOutlineHelper.viewAlphaInterpolator(alpha);
final float holographicAlpha = HolographicOutlineHelper.highlightAlphaInterpolator(alpha);
int newViewAlpha = (int) (viewAlpha * 255);
int newHolographicAlpha = (int) (holographicAlpha * 255);
if ((mAlpha != newViewAlpha) || (mHolographicAlpha != newHolographicAlpha)) {
mAlpha = newViewAlpha;
mHolographicAlpha = newHolographicAlpha;
super.setAlpha(viewAlpha);
}
}
public void invalidateCheckedImage() {
if (mCheckedOutline != null) {
mCheckedOutline.recycle();
mCheckedOutline = null;
}
}
@Override
protected void onDraw(Canvas canvas) {
if (mAlpha > 0) {
super.onDraw(canvas);
}
Bitmap overlay = null;
// draw any blended overlays
if (mCheckedOutline != null) {
mPaint.setAlpha(255);
overlay = mCheckedOutline;
}
if (overlay != null) {
final int offset = getScrollX();
final int compoundPaddingLeft = getCompoundPaddingLeft();
final int compoundPaddingRight = getCompoundPaddingRight();
int hspace = getWidth() - compoundPaddingRight - compoundPaddingLeft;
canvas.drawBitmap(overlay,
offset + compoundPaddingLeft + (hspace - overlay.getWidth()) / 2,
mPaddingTop,
mPaint);
}
}
@Override
public boolean isChecked() {
return mIsChecked;
}
void setChecked(boolean checked, boolean animate) {
if (mIsChecked != checked) {
mIsChecked = checked;
float alpha;
int duration;
if (mIsChecked) {
alpha = mCheckedAlpha;
duration = mCheckedFadeInDuration;
} else {
alpha = 1.0f;
duration = mCheckedFadeOutDuration;
}
// Initialize the animator
if (mCheckedAlphaAnimator != null) {
mCheckedAlphaAnimator.cancel();
}
if (animate) {
mCheckedAlphaAnimator = ObjectAnimator.ofFloat(this, "alpha", getAlpha(), alpha);
mCheckedAlphaAnimator.setDuration(duration);
mCheckedAlphaAnimator.start();
} else {
setAlpha(alpha);
}
invalidate();
}
}
@Override
public void setChecked(boolean checked) {
setChecked(checked, true);
}
@Override
public void toggle() {
setChecked(!mIsChecked);
}
}
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