mirror of
https://github.com/LawnchairLauncher/lawnchair.git
synced 2026-02-20 11:18:21 +00:00
559 lines
21 KiB
Java
559 lines
21 KiB
Java
/*
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* Copyright (C) 2008 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.launcher3;
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import android.annotation.TargetApi;
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import android.app.Activity;
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import android.app.SearchManager;
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import android.appwidget.AppWidgetManager;
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import android.appwidget.AppWidgetProviderInfo;
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import android.content.ActivityNotFoundException;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.ApplicationInfo;
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import android.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import android.content.pm.PackageManager.NameNotFoundException;
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import android.content.pm.ResolveInfo;
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import android.content.res.Resources;
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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.Matrix;
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import android.graphics.Paint;
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import android.graphics.PaintFlagsDrawFilter;
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import android.graphics.Rect;
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import android.graphics.drawable.BitmapDrawable;
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import android.graphics.drawable.Drawable;
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import android.graphics.drawable.PaintDrawable;
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import android.os.Build;
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import android.util.Log;
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import android.util.Pair;
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import android.util.SparseArray;
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import android.view.View;
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import android.widget.Toast;
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import java.util.ArrayList;
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import java.util.Comparator;
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/**
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* Various utilities shared amongst the Launcher's classes.
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*/
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public final class Utilities {
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private static final String TAG = "Launcher.Utilities";
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private static int sIconWidth = -1;
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private static int sIconHeight = -1;
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private static final Rect sOldBounds = new Rect();
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private static final Canvas sCanvas = new Canvas();
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static {
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sCanvas.setDrawFilter(new PaintFlagsDrawFilter(Paint.DITHER_FLAG,
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Paint.FILTER_BITMAP_FLAG));
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}
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static int sColors[] = { 0xffff0000, 0xff00ff00, 0xff0000ff };
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static int sColorIndex = 0;
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static int[] sLoc0 = new int[2];
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static int[] sLoc1 = new int[2];
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// To turn on these properties, type
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// adb shell setprop log.tag.PROPERTY_NAME [VERBOSE | SUPPRESS]
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static final String FORCE_ENABLE_ROTATION_PROPERTY = "launcher_force_rotate";
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public static boolean sForceEnableRotation = isPropertyEnabled(FORCE_ENABLE_ROTATION_PROPERTY);
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/**
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* Returns a FastBitmapDrawable with the icon, accurately sized.
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*/
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public static FastBitmapDrawable createIconDrawable(Bitmap icon) {
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FastBitmapDrawable d = new FastBitmapDrawable(icon);
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d.setFilterBitmap(true);
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resizeIconDrawable(d);
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return d;
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}
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/**
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* Resizes an icon drawable to the correct icon size.
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*/
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static void resizeIconDrawable(Drawable icon) {
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icon.setBounds(0, 0, sIconWidth, sIconHeight);
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}
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public static boolean isPropertyEnabled(String propertyName) {
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return Log.isLoggable(propertyName, Log.VERBOSE);
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}
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public static boolean isRotationEnabled(Context c) {
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boolean enableRotation = sForceEnableRotation ||
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c.getResources().getBoolean(R.bool.allow_rotation);
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return enableRotation;
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}
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/**
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* Indicates if the device is running LMP or higher.
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*/
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public static boolean isLmpOrAbove() {
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return Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
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}
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public static boolean isLmpMr1() {
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return Build.VERSION.SDK_INT == 22;
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}
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/**
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* Returns a bitmap suitable for the all apps view. If the package or the resource do not
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* exist, it returns null.
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*/
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static Bitmap createIconBitmap(String packageName, String resourceName, IconCache cache,
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Context context) {
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PackageManager packageManager = context.getPackageManager();
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// the resource
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try {
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Resources resources = packageManager.getResourcesForApplication(packageName);
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if (resources != null) {
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final int id = resources.getIdentifier(resourceName, null, null);
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return createIconBitmap(
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resources.getDrawableForDensity(id, cache.getFullResIconDpi()), context);
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}
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} catch (Exception e) {
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// Icon not found.
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}
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return null;
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}
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/**
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* Returns a bitmap which is of the appropriate size to be displayed as an icon
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*/
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static Bitmap createIconBitmap(Bitmap icon, Context context) {
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synchronized (sCanvas) { // we share the statics :-(
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if (sIconWidth == -1) {
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initStatics(context);
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}
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}
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if (sIconWidth == icon.getWidth() && sIconHeight == icon.getHeight()) {
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return icon;
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}
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return createIconBitmap(new BitmapDrawable(context.getResources(), icon), context);
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}
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/**
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* Returns a bitmap suitable for the all apps view.
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*/
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public static Bitmap createIconBitmap(Drawable icon, Context context) {
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synchronized (sCanvas) { // we share the statics :-(
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if (sIconWidth == -1) {
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initStatics(context);
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}
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int width = sIconWidth;
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int height = sIconHeight;
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if (icon instanceof PaintDrawable) {
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PaintDrawable painter = (PaintDrawable) icon;
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painter.setIntrinsicWidth(width);
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painter.setIntrinsicHeight(height);
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} else if (icon instanceof BitmapDrawable) {
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// Ensure the bitmap has a density.
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BitmapDrawable bitmapDrawable = (BitmapDrawable) icon;
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Bitmap bitmap = bitmapDrawable.getBitmap();
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if (bitmap.getDensity() == Bitmap.DENSITY_NONE) {
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bitmapDrawable.setTargetDensity(context.getResources().getDisplayMetrics());
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}
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}
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int sourceWidth = icon.getIntrinsicWidth();
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int sourceHeight = icon.getIntrinsicHeight();
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if (sourceWidth > 0 && sourceHeight > 0) {
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// Scale the icon proportionally to the icon dimensions
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final float ratio = (float) sourceWidth / sourceHeight;
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if (sourceWidth > sourceHeight) {
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height = (int) (width / ratio);
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} else if (sourceHeight > sourceWidth) {
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width = (int) (height * ratio);
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}
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}
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// no intrinsic size --> use default size
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int textureWidth = sIconWidth;
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int textureHeight = sIconHeight;
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final Bitmap bitmap = Bitmap.createBitmap(textureWidth, textureHeight,
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Bitmap.Config.ARGB_8888);
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final Canvas canvas = sCanvas;
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canvas.setBitmap(bitmap);
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final int left = (textureWidth-width) / 2;
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final int top = (textureHeight-height) / 2;
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@SuppressWarnings("all") // suppress dead code warning
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final boolean debug = false;
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if (debug) {
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// draw a big box for the icon for debugging
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canvas.drawColor(sColors[sColorIndex]);
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if (++sColorIndex >= sColors.length) sColorIndex = 0;
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Paint debugPaint = new Paint();
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debugPaint.setColor(0xffcccc00);
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canvas.drawRect(left, top, left+width, top+height, debugPaint);
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}
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sOldBounds.set(icon.getBounds());
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icon.setBounds(left, top, left+width, top+height);
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icon.draw(canvas);
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icon.setBounds(sOldBounds);
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canvas.setBitmap(null);
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return bitmap;
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}
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}
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/**
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* Given a coordinate relative to the descendant, find the coordinate in a parent view's
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* coordinates.
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*
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* @param descendant The descendant to which the passed coordinate is relative.
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* @param root The root view to make the coordinates relative to.
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* @param coord The coordinate that we want mapped.
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* @param includeRootScroll Whether or not to account for the scroll of the descendant:
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* sometimes this is relevant as in a child's coordinates within the descendant.
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* @return The factor by which this descendant is scaled relative to this DragLayer. Caution
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* this scale factor is assumed to be equal in X and Y, and so if at any point this
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* assumption fails, we will need to return a pair of scale factors.
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*/
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public static float getDescendantCoordRelativeToParent(View descendant, View root,
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int[] coord, boolean includeRootScroll) {
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ArrayList<View> ancestorChain = new ArrayList<View>();
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float[] pt = {coord[0], coord[1]};
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View v = descendant;
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while(v != root && v != null) {
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ancestorChain.add(v);
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v = (View) v.getParent();
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}
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ancestorChain.add(root);
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float scale = 1.0f;
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int count = ancestorChain.size();
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for (int i = 0; i < count; i++) {
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View v0 = ancestorChain.get(i);
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// For TextViews, scroll has a meaning which relates to the text position
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// which is very strange... ignore the scroll.
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if (v0 != descendant || includeRootScroll) {
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pt[0] -= v0.getScrollX();
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pt[1] -= v0.getScrollY();
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}
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v0.getMatrix().mapPoints(pt);
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pt[0] += v0.getLeft();
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pt[1] += v0.getTop();
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scale *= v0.getScaleX();
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}
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coord[0] = (int) Math.round(pt[0]);
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coord[1] = (int) Math.round(pt[1]);
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return scale;
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}
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/**
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* Inverse of {@link #getDescendantCoordRelativeToSelf(View, int[])}.
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*/
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public static float mapCoordInSelfToDescendent(View descendant, View root,
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int[] coord) {
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ArrayList<View> ancestorChain = new ArrayList<View>();
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float[] pt = {coord[0], coord[1]};
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View v = descendant;
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while(v != root) {
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ancestorChain.add(v);
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v = (View) v.getParent();
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}
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ancestorChain.add(root);
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float scale = 1.0f;
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Matrix inverse = new Matrix();
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int count = ancestorChain.size();
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for (int i = count - 1; i >= 0; i--) {
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View ancestor = ancestorChain.get(i);
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View next = i > 0 ? ancestorChain.get(i-1) : null;
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pt[0] += ancestor.getScrollX();
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pt[1] += ancestor.getScrollY();
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if (next != null) {
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pt[0] -= next.getLeft();
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pt[1] -= next.getTop();
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next.getMatrix().invert(inverse);
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inverse.mapPoints(pt);
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scale *= next.getScaleX();
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}
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}
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coord[0] = (int) Math.round(pt[0]);
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coord[1] = (int) Math.round(pt[1]);
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return scale;
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}
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/**
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* Utility method to determine whether the given point, in local coordinates,
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* is inside the view, where the area of the view is expanded by the slop factor.
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* This method is called while processing touch-move events to determine if the event
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* is still within the view.
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*/
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public static boolean pointInView(View v, float localX, float localY, float slop) {
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return localX >= -slop && localY >= -slop && localX < (v.getWidth() + slop) &&
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localY < (v.getHeight() + slop);
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}
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private static void initStatics(Context context) {
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final Resources resources = context.getResources();
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sIconWidth = sIconHeight = (int) resources.getDimension(R.dimen.app_icon_size);
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}
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public static void setIconSize(int widthPx) {
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sIconWidth = sIconHeight = widthPx;
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}
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public static void scaleRect(Rect r, float scale) {
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if (scale != 1.0f) {
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r.left = (int) (r.left * scale + 0.5f);
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r.top = (int) (r.top * scale + 0.5f);
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r.right = (int) (r.right * scale + 0.5f);
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r.bottom = (int) (r.bottom * scale + 0.5f);
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}
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}
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public static int[] getCenterDeltaInScreenSpace(View v0, View v1, int[] delta) {
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v0.getLocationInWindow(sLoc0);
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v1.getLocationInWindow(sLoc1);
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sLoc0[0] += (v0.getMeasuredWidth() * v0.getScaleX()) / 2;
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sLoc0[1] += (v0.getMeasuredHeight() * v0.getScaleY()) / 2;
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sLoc1[0] += (v1.getMeasuredWidth() * v1.getScaleX()) / 2;
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sLoc1[1] += (v1.getMeasuredHeight() * v1.getScaleY()) / 2;
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if (delta == null) {
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delta = new int[2];
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}
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delta[0] = sLoc1[0] - sLoc0[0];
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delta[1] = sLoc1[1] - sLoc0[1];
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return delta;
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}
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public static void scaleRectAboutCenter(Rect r, float scale) {
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int cx = r.centerX();
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int cy = r.centerY();
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r.offset(-cx, -cy);
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Utilities.scaleRect(r, scale);
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r.offset(cx, cy);
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}
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public static void startActivityForResultSafely(
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Activity activity, Intent intent, int requestCode) {
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try {
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activity.startActivityForResult(intent, requestCode);
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} catch (ActivityNotFoundException e) {
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Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
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} catch (SecurityException e) {
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Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
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Log.e(TAG, "Launcher does not have the permission to launch " + intent +
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". Make sure to create a MAIN intent-filter for the corresponding activity " +
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"or use the exported attribute for this activity.", e);
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}
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}
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static boolean isSystemApp(Context context, Intent intent) {
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PackageManager pm = context.getPackageManager();
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ComponentName cn = intent.getComponent();
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String packageName = null;
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if (cn == null) {
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ResolveInfo info = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
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if ((info != null) && (info.activityInfo != null)) {
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packageName = info.activityInfo.packageName;
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}
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} else {
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packageName = cn.getPackageName();
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}
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if (packageName != null) {
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try {
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PackageInfo info = pm.getPackageInfo(packageName, 0);
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return (info != null) && (info.applicationInfo != null) &&
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((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0);
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} catch (NameNotFoundException e) {
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return false;
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}
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} else {
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return false;
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}
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}
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/**
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* This picks a dominant color, looking for high-saturation, high-value, repeated hues.
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* @param bitmap The bitmap to scan
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* @param samples The approximate max number of samples to use.
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*/
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static int findDominantColorByHue(Bitmap bitmap, int samples) {
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final int height = bitmap.getHeight();
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final int width = bitmap.getWidth();
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int sampleStride = (int) Math.sqrt((height * width) / samples);
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if (sampleStride < 1) {
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sampleStride = 1;
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}
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// This is an out-param, for getting the hsv values for an rgb
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float[] hsv = new float[3];
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// First get the best hue, by creating a histogram over 360 hue buckets,
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// where each pixel contributes a score weighted by saturation, value, and alpha.
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float[] hueScoreHistogram = new float[360];
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float highScore = -1;
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int bestHue = -1;
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for (int y = 0; y < height; y += sampleStride) {
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for (int x = 0; x < width; x += sampleStride) {
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int argb = bitmap.getPixel(x, y);
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int alpha = 0xFF & (argb >> 24);
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if (alpha < 0x80) {
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// Drop mostly-transparent pixels.
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continue;
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}
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// Remove the alpha channel.
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int rgb = argb | 0xFF000000;
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Color.colorToHSV(rgb, hsv);
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// Bucket colors by the 360 integer hues.
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int hue = (int) hsv[0];
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if (hue < 0 || hue >= hueScoreHistogram.length) {
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// Defensively avoid array bounds violations.
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continue;
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}
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float score = hsv[1] * hsv[2];
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hueScoreHistogram[hue] += score;
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if (hueScoreHistogram[hue] > highScore) {
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highScore = hueScoreHistogram[hue];
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bestHue = hue;
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}
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}
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}
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SparseArray<Float> rgbScores = new SparseArray<Float>();
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int bestColor = 0xff000000;
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highScore = -1;
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// Go back over the RGB colors that match the winning hue,
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// creating a histogram of weighted s*v scores, for up to 100*100 [s,v] buckets.
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// The highest-scoring RGB color wins.
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for (int y = 0; y < height; y += sampleStride) {
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for (int x = 0; x < width; x += sampleStride) {
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int rgb = bitmap.getPixel(x, y) | 0xff000000;
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Color.colorToHSV(rgb, hsv);
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int hue = (int) hsv[0];
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if (hue == bestHue) {
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float s = hsv[1];
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float v = hsv[2];
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int bucket = (int) (s * 100) + (int) (v * 10000);
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// Score by cumulative saturation * value.
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float score = s * v;
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Float oldTotal = rgbScores.get(bucket);
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float newTotal = oldTotal == null ? score : oldTotal + score;
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rgbScores.put(bucket, newTotal);
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if (newTotal > highScore) {
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highScore = newTotal;
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// All the colors in the winning bucket are very similar. Last in wins.
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bestColor = rgb;
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}
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}
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}
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}
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return bestColor;
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}
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/*
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* Finds a system apk which had a broadcast receiver listening to a particular action.
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* @param action intent action used to find the apk
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* @return a pair of apk package name and the resources.
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*/
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static Pair<String, Resources> findSystemApk(String action, PackageManager pm) {
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final Intent intent = new Intent(action);
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for (ResolveInfo info : pm.queryBroadcastReceivers(intent, 0)) {
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if (info.activityInfo != null &&
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(info.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
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final String packageName = info.activityInfo.packageName;
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try {
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final Resources res = pm.getResourcesForApplication(packageName);
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return Pair.create(packageName, res);
|
|
} catch (NameNotFoundException e) {
|
|
Log.w(TAG, "Failed to find resources for " + packageName);
|
|
}
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
@TargetApi(Build.VERSION_CODES.KITKAT)
|
|
public static boolean isViewAttachedToWindow(View v) {
|
|
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
|
|
return v.isAttachedToWindow();
|
|
} else {
|
|
// A proxy call which returns null, if the view is not attached to the window.
|
|
return v.getKeyDispatcherState() != null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns a widget with category {@link AppWidgetProviderInfo#WIDGET_CATEGORY_SEARCHBOX}
|
|
* provided by the same package which is set to be global search activity.
|
|
* If widgetCategory is not supported, or no such widget is found, returns the first widget
|
|
* provided by the package.
|
|
*/
|
|
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
|
|
public static AppWidgetProviderInfo getSearchWidgetProvider(Context context) {
|
|
SearchManager searchManager =
|
|
(SearchManager) context.getSystemService(Context.SEARCH_SERVICE);
|
|
ComponentName searchComponent = searchManager.getGlobalSearchActivity();
|
|
if (searchComponent == null) return null;
|
|
String providerPkg = searchComponent.getPackageName();
|
|
|
|
AppWidgetProviderInfo defaultWidgetForSearchPackage = null;
|
|
|
|
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
|
|
for (AppWidgetProviderInfo info : appWidgetManager.getInstalledProviders()) {
|
|
if (info.provider.getPackageName().equals(providerPkg)) {
|
|
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
|
|
if ((info.widgetCategory & AppWidgetProviderInfo.WIDGET_CATEGORY_SEARCHBOX) != 0) {
|
|
return info;
|
|
} else if (defaultWidgetForSearchPackage == null) {
|
|
defaultWidgetForSearchPackage = info;
|
|
}
|
|
} else {
|
|
return info;
|
|
}
|
|
}
|
|
}
|
|
return defaultWidgetForSearchPackage;
|
|
}
|
|
|
|
public static final Comparator<ItemInfo> RANK_COMPARATOR = new Comparator<ItemInfo>() {
|
|
|
|
@Override
|
|
public int compare(ItemInfo lhs, ItemInfo rhs) {
|
|
return lhs.rank - rhs.rank;
|
|
}
|
|
};
|
|
}
|