mirror of
https://github.com/LawnchairLauncher/lawnchair.git
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Adding outlines to side pages for widgets and wallpaper pages in the customization tray.
Change-Id: Ib2ec5e630c1c861003d0e0b5672ed69ef25c0b47
This commit is contained in:
Winson Chung
218
src/com/android/launcher2/PagedViewWidget.java
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218
src/com/android/launcher2/PagedViewWidget.java
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/*
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* Copyright (C) 2010 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.launcher2;
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import android.appwidget.AppWidgetProviderInfo;
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import android.content.Context;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.content.res.TypedArray;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Paint;
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import android.graphics.drawable.Drawable;
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import android.os.Handler;
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import android.os.HandlerThread;
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import android.os.Message;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import android.widget.ImageView;
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import android.widget.LinearLayout;
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import android.widget.TextView;
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import com.android.launcher.R;
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import com.android.launcher2.PagedView.PagedViewIconCache;
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/**
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* The linear layout used strictly for the widget/wallpaper tab of the customization tray
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*/
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public class PagedViewWidget extends LinearLayout {
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static final String TAG = "PagedViewWidgetLayout";
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private final Paint mPaint = new Paint();
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private static HolographicOutlineHelper sHolographicOutlineHelper;
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private Bitmap mHolographicOutline;
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private final Canvas mHolographicOutlineCanvas = new Canvas();
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private FastBitmapDrawable mPreview;
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private int mAlpha = 255;
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private int mHolographicAlpha;
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// Highlight colors
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private int mHoloBlurColor;
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private int mHoloOutlineColor;
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private static final HandlerThread sWorkerThread = new HandlerThread("pagedviewwidget-helper");
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static {
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sWorkerThread.start();
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}
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private static final int MESSAGE_CREATE_HOLOGRAPHIC_OUTLINE = 1;
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private static final Handler sWorker = new Handler(sWorkerThread.getLooper()) {
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private DeferredHandler mHandler = new DeferredHandler();
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public void handleMessage(Message msg) {
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final PagedViewWidget widget = (PagedViewWidget) msg.obj;
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final int prevAlpha = widget.mPreview.getAlpha();
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final Bitmap outline = Bitmap.createBitmap(widget.getWidth(), widget.getHeight(),
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Bitmap.Config.ARGB_8888);
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widget.mHolographicOutlineCanvas.setBitmap(outline);
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widget.mHolographicOutlineCanvas.save();
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widget.mHolographicOutlineCanvas.translate(widget.mPaddingLeft, widget.mPaddingTop);
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widget.mPreview.setAlpha(255);
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widget.mPreview.draw(widget.mHolographicOutlineCanvas);
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widget.mPreview.setAlpha(prevAlpha);
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widget.mHolographicOutlineCanvas.restore();
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sHolographicOutlineHelper.applyExpensiveOutlineWithBlur(outline,
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widget.mHolographicOutlineCanvas, widget.mHoloBlurColor,
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widget.mHoloOutlineColor);
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mHandler.post(new Runnable() {
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public void run() {
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widget.mHolographicOutline = outline;
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widget.invalidate();
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}
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});
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}
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};
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public PagedViewWidget(Context context) {
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this(context, null);
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}
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public PagedViewWidget(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public PagedViewWidget(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.PagedViewWidget,
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defStyle, 0);
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mHoloBlurColor = a.getColor(R.styleable.PagedViewWidget_blurColor, 0);
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mHoloOutlineColor = a.getColor(R.styleable.PagedViewWidget_outlineColor, 0);
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a.recycle();
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if (sHolographicOutlineHelper == null) {
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sHolographicOutlineHelper = new HolographicOutlineHelper();
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}
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setFocusable(true);
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setWillNotDraw(false);
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setClipToPadding(false);
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}
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private void queueHolographicOutlineCreation() {
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// Generate the outline in the background
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if (mHolographicOutline == null) {
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Message m = sWorker.obtainMessage(MESSAGE_CREATE_HOLOGRAPHIC_OUTLINE);
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m.obj = this;
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sWorker.sendMessage(m);
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}
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}
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public void applyFromAppWidgetProviderInfo(AppWidgetProviderInfo info,
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FastBitmapDrawable preview, int maxWidth, int[] cellSpan) {
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final ImageView image = (ImageView) findViewById(R.id.widget_preview);
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image.setMaxWidth(maxWidth);
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image.setImageDrawable(preview);
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final TextView name = (TextView) findViewById(R.id.widget_name);
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name.setText(info.label);
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final TextView dims = (TextView) findViewById(R.id.widget_dims);
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dims.setText(mContext.getString(R.string.widget_dims_format, cellSpan[0], cellSpan[1]));
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mPreview = preview;
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}
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public void applyFromWallpaperInfo(ResolveInfo info, PackageManager packageManager,
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FastBitmapDrawable preview, int maxWidth) {
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ImageView image = (ImageView) findViewById(R.id.wallpaper_preview);
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image.setMaxWidth(maxWidth);
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image.setImageDrawable(preview);
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TextView name = (TextView) findViewById(R.id.wallpaper_name);
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name.setText(info.loadLabel(packageManager));
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mPreview = preview;
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}
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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// We eat up the touch events here, since the PagedView (which uses the same swiping
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// touch code as Workspace previously) uses onInterceptTouchEvent() to determine when
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// the user is scrolling between pages. This means that if the pages themselves don't
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// handle touch events, it gets forwarded up to PagedView itself, and it's own
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// onTouchEvent() handling will prevent further intercept touch events from being called
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// (it's the same view in that case). This is not ideal, but to prevent more changes,
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// we just always mark the touch event as handled.
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return super.onTouchEvent(event) || true;
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}
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@Override
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protected void onDraw(Canvas canvas) {
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if (mAlpha > 0) {
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super.onDraw(canvas);
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}
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// draw any blended overlays
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if (mHolographicOutline != null && mHolographicAlpha > 0) {
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mPaint.setAlpha(mHolographicAlpha);
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canvas.drawBitmap(mHolographicOutline, 0, 0, mPaint);
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}
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}
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@Override
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protected boolean onSetAlpha(int alpha) {
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return true;
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}
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@Override
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public void setAlpha(float alpha) {
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final float viewAlpha = sHolographicOutlineHelper.viewAlphaInterpolator(alpha);
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final float holographicAlpha = sHolographicOutlineHelper.highlightAlphaInterpolator(alpha);
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int newViewAlpha = (int) (viewAlpha * 255);
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int newHolographicAlpha = (int) (holographicAlpha * 255);
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if ((mAlpha != newViewAlpha) || (mHolographicAlpha != newHolographicAlpha)) {
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mAlpha = newViewAlpha;
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mHolographicAlpha = newHolographicAlpha;
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setChildrenAlpha(viewAlpha);
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super.setAlpha(viewAlpha);
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}
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}
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private void setChildrenAlpha(float alpha) {
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final int childCount = getChildCount();
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for (int i = 0; i < childCount; i++) {
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getChildAt(i).setAlpha(alpha);
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}
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}
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@Override
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protected void onSizeChanged(int w, int h, int oldw, int oldh) {
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if (w > 0 && h > 0) {
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queueHolographicOutlineCreation();
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}
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super.onSizeChanged(w, h, oldw, oldh);
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}
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@Override
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public void onDetachedFromWindow() {
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super.onDetachedFromWindow();
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sWorker.removeMessages(MESSAGE_CREATE_HOLOGRAPHIC_OUTLINE, this);
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}
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}
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