Java tutorial
/* * Copyright (C) 2011 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.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.animation.ArgbEvaluator; import android.animation.ValueAnimator; import android.content.Context; import android.graphics.Color; import android.graphics.Rect; import android.graphics.drawable.ColorDrawable; import android.graphics.drawable.Drawable; import android.support.v4.content.ContextCompat; import android.support.v4.graphics.ColorUtils; import android.util.AttributeSet; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.ViewDebug; import android.widget.FrameLayout; import android.widget.TextView; import com.android.launcher3.config.FeatureFlags; import com.android.launcher3.dynamicui.ExtractedColors; import com.android.launcher3.logging.UserEventDispatcher; import com.android.launcher3.userevent.nano.LauncherLogProto; import com.android.launcher3.userevent.nano.LauncherLogProto.Target; public class Hotseat extends FrameLayout implements UserEventDispatcher.LaunchSourceProvider { public static boolean isHotseatTouched = false; private CellLayout mContent; private Launcher mLauncher; @ViewDebug.ExportedProperty(category = "launcher") private final boolean mHasVerticalHotseat; @ViewDebug.ExportedProperty(category = "launcher") private int mBackgroundColor; @ViewDebug.ExportedProperty(category = "launcher") private ColorDrawable mBackground; private ValueAnimator mBackgroundColorAnimator; public Hotseat(Context context) { this(context, null); } public Hotseat(Context context, AttributeSet attrs) { this(context, attrs, 0); } public Hotseat(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); mLauncher = Launcher.getLauncher(context); mHasVerticalHotseat = mLauncher.getDeviceProfile().isVerticalBarLayout(); mBackgroundColor = ColorUtils .setAlphaComponent(ContextCompat.getColor(context, R.color.all_apps_container_color), 0); mBackground = new ColorDrawable(mBackgroundColor); if (Utilities.getDockBackgroundPrefEnabled(getContext()) != -1) { setBackgroundColor(Utilities.getDockBackgroundPrefEnabled(getContext())); } else { setBackground(mBackground); } //setBackgroundColor(ContextCompat.getColor(context, R.color.colorPrimary)); } public CellLayout getLayout() { return mContent; } /** * Returns whether there are other icons than the all apps button in the hotseat. */ public boolean hasIcons() { return mContent.getShortcutsAndWidgets().getChildCount() > 1; } /** * Registers the specified listener on the cell layout of the hotseat. */ @Override public void setOnLongClickListener(OnLongClickListener l) { mContent.setOnLongClickListener(l); } /* Get the orientation invariant order of the item in the hotseat for persistence. */ int getOrderInHotseat(int x, int y) { return mHasVerticalHotseat ? (mContent.getCountY() - y - 1) : x; } /* Get the orientation specific coordinates given an invariant order in the hotseat. */ int getCellXFromOrder(int rank) { return mHasVerticalHotseat ? 0 : rank; } int getCellYFromOrder(int rank) { return mHasVerticalHotseat ? (mContent.getCountY() - (rank + 1)) : 0; } @Override protected void onFinishInflate() { super.onFinishInflate(); DeviceProfile grid = mLauncher.getDeviceProfile(); mContent = (CellLayout) findViewById(R.id.layout); if (grid.isLandscape && !grid.isLargeTablet) { mContent.setGridSize(1, (int) grid.inv.numHotseatIcons); } else { mContent.setGridSize((int) grid.inv.numHotseatIcons, 1); } mContent.setIsHotseat(true); resetLayout(); } void resetLayout() { mContent.removeAllViewsInLayout(); if (!FeatureFlags.NO_ALL_APPS_ICON) { // Add the Apps button Context context = getContext(); int allAppsButtonRank = mLauncher.getDeviceProfile().inv.getAllAppsButtonRank(); LayoutInflater inflater = LayoutInflater.from(context); TextView allAppsButton = (TextView) inflater.inflate(R.layout.all_apps_button, mContent, false); Drawable d = context.getResources().getDrawable(R.drawable.all_apps_button_icon); mLauncher.resizeIconDrawable(d); int scaleDownPx = getResources().getDimensionPixelSize(R.dimen.all_apps_button_scale_down); Rect bounds = d.getBounds(); d.setBounds(bounds.left, bounds.top + scaleDownPx / 2, bounds.right - scaleDownPx, bounds.bottom - scaleDownPx / 2); allAppsButton.setCompoundDrawables(null, d, null, null); allAppsButton.setContentDescription(context.getString(R.string.all_apps_button_label)); allAppsButton.setOnKeyListener(new HotseatIconKeyEventListener()); if (mLauncher != null) { mLauncher.setAllAppsButton(allAppsButton); allAppsButton.setOnTouchListener(mLauncher.getHapticFeedbackTouchListener()); allAppsButton.setOnClickListener(mLauncher); allAppsButton.setOnLongClickListener(mLauncher); allAppsButton.setOnFocusChangeListener(mLauncher.mFocusHandler); } // Note: We do this to ensure that the hotseat is always laid out in the orientation of // the hotseat in order regardless of which orientation they were added int x = getCellXFromOrder(allAppsButtonRank); int y = getCellYFromOrder(allAppsButtonRank); CellLayout.LayoutParams lp = new CellLayout.LayoutParams(x, y, 1, 1); lp.canReorder = false; mContent.addViewToCellLayout(allAppsButton, -1, allAppsButton.getId(), lp, true); } } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { // We don't want any clicks to go through to the hotseat unless the workspace is in // the normal state or an accessible drag is in progress. isHotseatTouched = true; return mLauncher.getWorkspace().workspaceInModalState() && !mLauncher.getAccessibilityDelegate().isInAccessibleDrag(); } @Override public void fillInLaunchSourceData(View v, ItemInfo info, Target target, Target targetParent) { target.gridX = info.cellX; target.gridY = info.cellY; targetParent.containerType = LauncherLogProto.HOTSEAT; } public void updateColor(ExtractedColors extractedColors, boolean animate) { if (!mHasVerticalHotseat) { int color = extractedColors.getColor(ExtractedColors.HOTSEAT_INDEX, Color.TRANSPARENT); if (mBackgroundColorAnimator != null) { mBackgroundColorAnimator.cancel(); } if (!animate) { setBackgroundColor(color); } else { mBackgroundColorAnimator = ValueAnimator.ofInt(mBackgroundColor, color); mBackgroundColorAnimator.setEvaluator(new ArgbEvaluator()); mBackgroundColorAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animation) { mBackground.setColor((Integer) animation.getAnimatedValue()); } }); mBackgroundColorAnimator.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { mBackgroundColorAnimator = null; } }); mBackgroundColorAnimator.start(); } mBackgroundColor = color; } } public void setBackgroundTransparent(boolean enable) { if (enable) { mBackground.setAlpha(0); } else { mBackground.setAlpha(255); } } public int getBackgroundDrawableColor() { return mBackgroundColor; } }