1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.layoutlib.bridge.bars; 18 19 import com.android.layoutlib.bridge.android.BridgeContext; 20 import com.android.resources.Density; 21 22 import android.content.Context; 23 import android.content.pm.ApplicationInfo; 24 import android.util.AttributeSet; 25 import android.util.DisplayMetrics; 26 import android.view.View; 27 import android.widget.LinearLayout; 28 import android.widget.TextView; 29 30 public class NavigationBar extends CustomBar { 31 32 /** Navigation bar background color attribute name. */ 33 private static final String ATTR_COLOR = "navigationBarColor"; 34 /** Attribute for translucency property. */ 35 public static final String ATTR_TRANSLUCENT = "windowTranslucentNavigation"; 36 // These correspond to @dimen/navigation_side_padding in the system ui code. 37 private static final int PADDING_WIDTH_DEFAULT = 36; 38 private static final int PADDING_WIDTH_SW360 = 40; 39 private static final int PADDING_WIDTH_SW400 = 50; 40 // These corresponds to @dimen/navigation_key_width in the system ui code. 41 private static final int WIDTH_DEFAULT = 36; 42 private static final int WIDTH_SW360 = 40; 43 private static final int WIDTH_SW600 = 48; 44 private static final String LAYOUT_XML = "/bars/navigation_bar.xml"; 45 private static final String LAYOUT_600DP_XML = "/bars/navigation_bar600dp.xml"; 46 47 48 /** 49 * Constructor to be used when creating the {@link NavigationBar} as a regular control. 50 * This is currently used by the theme editor. 51 */ 52 @SuppressWarnings("unused") NavigationBar(Context context, AttributeSet attrs)53 public NavigationBar(Context context, AttributeSet attrs) { 54 this((BridgeContext) context, 55 Density.getEnum(((BridgeContext) context).getMetrics().densityDpi), 56 LinearLayout.HORIZONTAL, // In this mode, it doesn't need to be render vertically 57 ((BridgeContext) context).getConfiguration().getLayoutDirection() == 58 View.LAYOUT_DIRECTION_RTL, 59 (context.getApplicationInfo().flags & ApplicationInfo.FLAG_SUPPORTS_RTL) != 0, 60 0); 61 } 62 NavigationBar(BridgeContext context, Density density, int orientation, boolean isRtl, boolean rtlEnabled, int simulatedPlatformVersion)63 public NavigationBar(BridgeContext context, Density density, int orientation, boolean isRtl, 64 boolean rtlEnabled, int simulatedPlatformVersion) { 65 super(context, orientation, getShortestWidth(context)>= 600 ? LAYOUT_600DP_XML : LAYOUT_XML, 66 "navigation_bar.xml", simulatedPlatformVersion); 67 68 int color = getBarColor(ATTR_COLOR, ATTR_TRANSLUCENT); 69 setBackgroundColor(color == 0 ? 0xFF000000 : color); 70 71 // Cannot access the inside items through id because no R.id values have been 72 // created for them. 73 // We do know the order though. 74 // 0 is a spacer. 75 int back = 1; 76 int recent = 5; 77 if (orientation == LinearLayout.VERTICAL || (isRtl && !rtlEnabled)) { 78 // If RTL is enabled, then layoutlib mirrors the layout for us. 79 back = 5; 80 recent = 1; 81 } 82 83 //noinspection SpellCheckingInspection 84 loadIcon(back, "ic_sysbar_back.png", density, isRtl); 85 //noinspection SpellCheckingInspection 86 loadIcon(3, "ic_sysbar_home.png", density, isRtl); 87 //noinspection SpellCheckingInspection 88 loadIcon(recent, "ic_sysbar_recent.png", density, isRtl); 89 setupNavBar(context, orientation); 90 } 91 setupNavBar(BridgeContext context, int orientation)92 private void setupNavBar(BridgeContext context, int orientation) { 93 float sw = getShortestWidth(context); 94 View leftPadding = getChildAt(0); 95 View rightPadding = getChildAt(6); 96 setSize(context, leftPadding, orientation, getSidePadding(sw)); 97 setSize(context, rightPadding, orientation, getSidePadding(sw)); 98 int navButtonWidth = getWidth(sw); 99 for (int i = 1; i < 6; i += 2) { 100 View navButton = getChildAt(i); 101 setSize(context, navButton, orientation, navButtonWidth); 102 } 103 if (sw >= 600) { 104 setSize(context, getChildAt(2), orientation, 128); 105 setSize(context, getChildAt(4), orientation, 128); 106 } 107 } 108 setSize(BridgeContext context, View view, int orientation, int size)109 private static void setSize(BridgeContext context, View view, int orientation, int size) { 110 size *= context.getMetrics().density; 111 LayoutParams layoutParams = (LayoutParams) view.getLayoutParams(); 112 if (orientation == HORIZONTAL) { 113 layoutParams.width = size; 114 } else { 115 layoutParams.height = size; 116 } 117 view.setLayoutParams(layoutParams); 118 } 119 getSidePadding(float sw)120 private static int getSidePadding(float sw) { 121 if (sw >= 400) { 122 return PADDING_WIDTH_SW400; 123 } 124 if (sw >= 360) { 125 return PADDING_WIDTH_SW360; 126 } 127 return PADDING_WIDTH_DEFAULT; 128 } 129 getWidth(float sw)130 private static int getWidth(float sw) { 131 if (sw >= 600) { 132 return WIDTH_SW600; 133 } 134 if (sw >= 360) { 135 return WIDTH_SW360; 136 } 137 return WIDTH_DEFAULT; 138 } 139 getShortestWidth(BridgeContext context)140 private static float getShortestWidth(BridgeContext context) { 141 DisplayMetrics metrics = context.getMetrics(); 142 float sw = metrics.widthPixels < metrics.heightPixels ? 143 metrics.widthPixels : metrics.heightPixels; 144 sw /= metrics.density; 145 return sw; 146 } 147 148 @Override 149 protected TextView getStyleableTextView() { 150 return null; 151 } 152 } 153