| /* |
| * Copyright (C) 2015 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.content.Context; |
| import android.content.res.TypedArray; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.graphics.drawable.InsetDrawable; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.view.View; |
| import android.widget.FrameLayout; |
| |
| import com.android.launcher3.config.ProviderConfig; |
| |
| /** |
| * A base container view, which supports resizing. |
| */ |
| public abstract class BaseContainerView extends FrameLayout implements Insettable { |
| |
| private final static String TAG = "BaseContainerView"; |
| |
| // The window insets |
| private final Rect mInsets = new Rect(); |
| // The bounds of the search bar. Only the left, top, right are used to inset the |
| // search bar and the height is determined by the measurement of the layout |
| private final Rect mFixedSearchBarBounds = new Rect(); |
| // The computed bounds of the container |
| protected final Rect mContentBounds = new Rect(); |
| // The computed padding to apply to the container to achieve the container bounds |
| private final Rect mContentPadding = new Rect(); |
| // The inset to apply to the edges and between the search bar and the container |
| private final int mContainerBoundsInset; |
| |
| private final Drawable mRevealDrawable; |
| |
| private View mRevealView; |
| private View mContent; |
| |
| public BaseContainerView(Context context) { |
| this(context, null); |
| } |
| |
| public BaseContainerView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public BaseContainerView(Context context, AttributeSet attrs, int defStyleAttr) { |
| super(context, attrs, defStyleAttr); |
| mContainerBoundsInset = getResources().getDimensionPixelSize(R.dimen.container_bounds_inset); |
| |
| TypedArray a = context.obtainStyledAttributes(attrs, |
| R.styleable.BaseContainerView, defStyleAttr, 0); |
| mRevealDrawable = a.getDrawable(R.styleable.BaseContainerView_revealBackground); |
| a.recycle(); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| |
| mContent = findViewById(R.id.main_content); |
| mRevealView = findViewById(R.id.reveal_view); |
| } |
| |
| @Override |
| final public void setInsets(Rect insets) { |
| mInsets.set(insets); |
| updateBackgroundAndPaddings(); |
| } |
| |
| /** |
| * Sets the search bar bounds for this container view to match. |
| */ |
| final public void setSearchBarBounds(Rect bounds) { |
| if (ProviderConfig.IS_DOGFOOD_BUILD && !isValidSearchBarBounds(bounds)) { |
| Log.e(TAG, "Invalid search bar bounds: " + bounds); |
| } |
| |
| mFixedSearchBarBounds.set(bounds); |
| |
| // Post the updates since they can trigger a relayout, and this call can be triggered from |
| // a layout pass itself. |
| post(new Runnable() { |
| @Override |
| public void run() { |
| updateBackgroundAndPaddings(); |
| } |
| }); |
| } |
| |
| /** |
| * Update the backgrounds and padding in response to a change in the bounds or insets. |
| */ |
| protected void updateBackgroundAndPaddings() { |
| Rect padding; |
| if (isValidSearchBarBounds(mFixedSearchBarBounds)) { |
| padding = new Rect( |
| mFixedSearchBarBounds.left, |
| mInsets.top + mContainerBoundsInset, |
| getMeasuredWidth() - mFixedSearchBarBounds.right, |
| mInsets.bottom + mContainerBoundsInset |
| ); |
| } else { |
| padding = new Rect( |
| mInsets.left + mContainerBoundsInset, |
| mInsets.top + mContainerBoundsInset, |
| mInsets.right + mContainerBoundsInset, |
| mInsets.bottom + mContainerBoundsInset |
| ); |
| } |
| |
| // The container padding changed, notify the container. |
| if (!padding.equals(mContentPadding)) { |
| mContentPadding.set(padding); |
| mContentBounds.set(padding.left, padding.top, |
| getMeasuredWidth() - padding.right, |
| getMeasuredHeight() - padding.bottom); |
| onUpdateBackgroundAndPaddings(padding); |
| } |
| } |
| |
| private void onUpdateBackgroundAndPaddings(Rect padding) { |
| // Apply the top-bottom padding to itself so that the launcher transition is |
| // clipped correctly |
| setPadding(0, padding.top, 0, padding.bottom); |
| |
| InsetDrawable background = new InsetDrawable(mRevealDrawable, |
| padding.left, 0, padding.right, 0); |
| mRevealView.setBackground(background.getConstantState().newDrawable()); |
| mContent.setBackground(background); |
| |
| Rect bgPadding = new Rect(); |
| background.getPadding(bgPadding); |
| onUpdateBgPadding(padding, bgPadding); |
| } |
| |
| protected abstract void onUpdateBgPadding(Rect padding, Rect bgPadding); |
| |
| /** |
| * Returns whether the search bar bounds we got are considered valid. |
| */ |
| private boolean isValidSearchBarBounds(Rect searchBarBounds) { |
| return !searchBarBounds.isEmpty() && |
| searchBarBounds.right <= getMeasuredWidth() && |
| searchBarBounds.bottom <= getMeasuredHeight(); |
| } |
| |
| public final View getContentView() { |
| return mContent; |
| } |
| |
| public final View getRevealView() { |
| return mRevealView; |
| } |
| } |