1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 package android.support.v17.leanback.widget; 15 16 import android.content.Context; 17 import android.graphics.Canvas; 18 import android.graphics.drawable.ColorDrawable; 19 import android.graphics.drawable.Drawable; 20 import android.support.annotation.ColorInt; 21 import android.support.v17.leanback.R; 22 import android.util.AttributeSet; 23 import android.view.LayoutInflater; 24 import android.view.View; 25 import android.view.ViewGroup; 26 import android.widget.LinearLayout; 27 28 /** 29 * RowContainerView wraps header and user defined row view 30 */ 31 final class RowContainerView extends LinearLayout { 32 33 private ViewGroup mHeaderDock; 34 private Drawable mForeground; 35 private boolean mForegroundBoundsChanged = true; 36 RowContainerView(Context context)37 public RowContainerView(Context context) { 38 this(context, null, 0); 39 } 40 RowContainerView(Context context, AttributeSet attrs)41 public RowContainerView(Context context, AttributeSet attrs) { 42 this(context, attrs, 0); 43 } 44 RowContainerView(Context context, AttributeSet attrs, int defStyle)45 public RowContainerView(Context context, AttributeSet attrs, int defStyle) { 46 super(context, attrs, defStyle); 47 setOrientation(VERTICAL); 48 LayoutInflater inflater = LayoutInflater.from(context); 49 inflater.inflate(R.layout.lb_row_container, this); 50 51 mHeaderDock = findViewById(R.id.lb_row_container_header_dock); 52 setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); 53 } 54 addHeaderView(View headerView)55 public void addHeaderView(View headerView) { 56 if (mHeaderDock.indexOfChild(headerView) < 0) { 57 mHeaderDock.addView(headerView, 0); 58 } 59 } 60 removeHeaderView(View headerView)61 public void removeHeaderView(View headerView) { 62 if (mHeaderDock.indexOfChild(headerView) >= 0) { 63 mHeaderDock.removeView(headerView); 64 } 65 } 66 addRowView(View view)67 public void addRowView(View view) { 68 addView(view); 69 } 70 showHeader(boolean show)71 public void showHeader(boolean show) { 72 mHeaderDock.setVisibility(show ? View.VISIBLE : View.GONE); 73 } 74 75 @Override setForeground(Drawable d)76 public void setForeground(Drawable d) { 77 mForeground = d; 78 setWillNotDraw(mForeground == null); 79 invalidate(); 80 } 81 setForegroundColor(@olorInt int color)82 public void setForegroundColor(@ColorInt int color) { 83 if (mForeground instanceof ColorDrawable) { 84 ((ColorDrawable) mForeground.mutate()).setColor(color); 85 invalidate(); 86 } else { 87 setForeground(new ColorDrawable(color)); 88 } 89 } 90 91 @Override getForeground()92 public Drawable getForeground() { 93 return mForeground; 94 } 95 96 @Override onSizeChanged(int w, int h, int oldw, int oldh)97 protected void onSizeChanged(int w, int h, int oldw, int oldh) { 98 super.onSizeChanged(w, h, oldw, oldh); 99 mForegroundBoundsChanged = true; 100 } 101 102 @Override draw(Canvas canvas)103 public void draw(Canvas canvas) { 104 super.draw(canvas); 105 if (mForeground != null) { 106 if (mForegroundBoundsChanged) { 107 mForegroundBoundsChanged = false; 108 mForeground.setBounds(0, 0, getWidth(), getHeight()); 109 } 110 mForeground.draw(canvas); 111 } 112 } 113 114 @Override hasOverlappingRendering()115 public boolean hasOverlappingRendering() { 116 return false; 117 } 118 } 119