annotate src/com/five_ten_sg/connectbot/TerminalView.java @ 257:8a6c7c7ffe0d

support 132 column mode
author Carl Byington <carl@five-ten-sg.com>
date Mon, 14 Jul 2014 14:25:03 -0700
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children 4dcc071e1feb
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1 /*
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2 * ConnectBot: simple, powerful, open-source SSH client for Android
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3 * Copyright 2007 Kenny Root, Jeffrey Sharkey
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4 *
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5 * Licensed under the Apache License, Version 2.0 (the "License");
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6 * you may not use this file except in compliance with the License.
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7 * You may obtain a copy of the License at
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8 *
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9 * http://www.apache.org/licenses/LICENSE-2.0
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10 *
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11 * Unless required by applicable law or agreed to in writing, software
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12 * distributed under the License is distributed on an "AS IS" BASIS,
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13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 * See the License for the specific language governing permissions and
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15 * limitations under the License.
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16 */
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17
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18 package com.five_ten_sg.connectbot;
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19
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20 import java.util.List;
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21 import java.util.regex.Matcher;
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22 import java.util.regex.Pattern;
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23
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24 import com.five_ten_sg.connectbot.bean.SelectionArea;
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25 import com.five_ten_sg.connectbot.service.FontSizeChangedListener;
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26 import com.five_ten_sg.connectbot.service.TerminalBridge;
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27 import com.five_ten_sg.connectbot.service.TerminalKeyListener;
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28 import android.app.Activity;
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29 import android.content.ContentResolver;
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30 import android.content.Context;
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31 import android.content.Intent;
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32 import android.content.pm.ResolveInfo;
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33 import android.database.Cursor;
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34 import android.graphics.Canvas;
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35 import android.graphics.Matrix;
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36 import android.graphics.Paint;
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37 import android.graphics.Path;
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38 import android.graphics.PixelXorXfermode;
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39 import android.graphics.RectF;
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40 import android.net.Uri;
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41 import android.os.AsyncTask;
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42 import android.view.KeyEvent;
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43 import android.view.View;
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44 import android.view.ViewGroup.LayoutParams;
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45 import android.view.accessibility.AccessibilityEvent;
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46 import android.view.accessibility.AccessibilityManager;
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47 import android.view.inputmethod.BaseInputConnection;
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48 import android.view.inputmethod.EditorInfo;
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49 import android.view.inputmethod.InputConnection;
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50 import android.view.ScaleGestureDetector;
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51 import android.widget.Toast;
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52 import de.mud.terminal.VDUBuffer;
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53
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54 /**
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55 * User interface {@link View} for showing a TerminalBridge in an
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56 * {@link Activity}. Handles drawing bitmap updates and passing keystrokes down
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57 * to terminal.
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58 *
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59 * @author jsharkey
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60 */
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61 public class TerminalView extends View implements FontSizeChangedListener {
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62
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63 private final Context context;
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64 public final TerminalBridge bridge;
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65 private final Paint paint;
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66 private final Paint cursorPaint;
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67 private final Paint cursorStrokePaint;
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68
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69 // Cursor paints to distinguish modes
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70 private Path ctrlCursor, altCursor, shiftCursor;
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71 private RectF tempSrc, tempDst;
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72 private Matrix scaleMatrix;
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73 private static final Matrix.ScaleToFit scaleType = Matrix.ScaleToFit.FILL;
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74
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75 private Toast notification = null;
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76 private String lastNotification = null;
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77 private volatile boolean notifications = true;
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78
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79 // Related to Accessibility Features
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80 private boolean mAccessibilityInitialized = false;
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81 private boolean mAccessibilityActive = true;
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82 private Object[] mAccessibilityLock = new Object[0];
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83 private StringBuffer mAccessibilityBuffer;
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84 private Pattern mControlCodes = null;
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85 private Matcher mCodeMatcher = null;
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86 private AccessibilityEventSender mEventSender = null;
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87
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88
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89 private static final String BACKSPACE_CODE = "\\x08\\x1b\\[K";
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90 private static final String CONTROL_CODE_PATTERN = "\\x1b\\[K[^m]+[m|:]";
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91
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92 private static final int ACCESSIBILITY_EVENT_THRESHOLD = 1000;
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93 private static final String SCREENREADER_INTENT_ACTION = "android.accessibilityservice.AccessibilityService";
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94 private static final String SCREENREADER_INTENT_CATEGORY = "android.accessibilityservice.category.FEEDBACK_SPOKEN";
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95
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96 public ScaleGestureDetector mScaleDetector;
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97
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98 public TerminalView(Context context, TerminalBridge bridge) {
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99 super(context);
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100 this.context = context;
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101 this.bridge = bridge;
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102 paint = new Paint();
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103 setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
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104 setFocusable(true);
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105 setFocusableInTouchMode(true);
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106 cursorPaint = new Paint();
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107 cursorPaint.setColor(bridge.color[bridge.defaultFg]);
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108 cursorPaint.setXfermode(new PixelXorXfermode(bridge.color[bridge.defaultBg]));
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109 cursorPaint.setAntiAlias(true);
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110 cursorStrokePaint = new Paint(cursorPaint);
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111 cursorStrokePaint.setStrokeWidth(0.1f);
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112 cursorStrokePaint.setStyle(Paint.Style.STROKE);
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113 /*
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114 * Set up our cursor indicators on a 1x1 Path object which we can later
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115 * transform to our character width and height
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116 */
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117 // TODO make this into a resource somehow
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118 shiftCursor = new Path();
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119 shiftCursor.lineTo(0.5f, 0.33f);
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120 shiftCursor.lineTo(1.0f, 0.0f);
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121 altCursor = new Path();
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122 altCursor.moveTo(0.0f, 1.0f);
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123 altCursor.lineTo(0.5f, 0.66f);
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124 altCursor.lineTo(1.0f, 1.0f);
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125 ctrlCursor = new Path();
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126 ctrlCursor.moveTo(0.0f, 0.25f);
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127 ctrlCursor.lineTo(1.0f, 0.5f);
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128 ctrlCursor.lineTo(0.0f, 0.75f);
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129 // For creating the transform when the terminal resizes
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130 tempSrc = new RectF();
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131 tempSrc.set(0.0f, 0.0f, 1.0f, 1.0f);
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132 tempDst = new RectF();
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133 scaleMatrix = new Matrix();
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134 bridge.addFontSizeChangedListener(this);
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135 // connect our view up to the bridge
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136 setOnKeyListener(bridge.getKeyHandler());
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137 mAccessibilityBuffer = new StringBuffer();
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138 // Enable accessibility features if a screen reader is active.
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139 new AccessibilityStateTester().execute((Void) null);
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140 mScaleDetector = new ScaleGestureDetector(context, new ScaleListener());
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141 }
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142
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143 public void destroy() {
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144 // tell bridge to destroy its bitmap
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145 bridge.parentDestroyed();
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146 }
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147
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148 @Override
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149 protected void onSizeChanged(int w, int h, int oldw, int oldh) {
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150 super.onSizeChanged(w, h, oldw, oldh);
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151 bridge.parentChanged(this);
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152 scaleCursors();
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153 }
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154
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155 public void onFontSizeChanged(float size) {
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156 scaleCursors();
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157 }
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158
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159 private void scaleCursors() {
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160 // Create a scale matrix to scale our 1x1 representation of the cursor
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161 tempDst.set(0.0f, 0.0f, bridge.charWidth, bridge.charHeight);
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162 scaleMatrix.setRectToRect(tempSrc, tempDst, scaleType);
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163 }
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
164
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
165 @Override
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
166 public void onDraw(Canvas canvas) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
167 if (bridge.bitmap != null) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
168 // draw the bitmap
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
169 bridge.onDraw();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
170 // draw the bridge bitmap if it exists
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
171 canvas.drawBitmap(bridge.bitmap, 0, 0, paint);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
172
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
173 // also draw cursor if visible
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
174 if (bridge.buffer.isCursorVisible()) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
175 int cursorColumn = bridge.buffer.getCursorColumn();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
176 final int cursorRow = bridge.buffer.getCursorRow();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
177 final int columns = bridge.buffer.getColumns();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
178
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
179 if (cursorColumn == columns)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
180 cursorColumn = columns - 1;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
181
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
182 if (cursorColumn < 0 || cursorRow < 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
183 return;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
184
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
185 int currentAttribute = bridge.buffer.getAttributes(
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
186 cursorColumn, cursorRow);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
187 boolean onWideCharacter = (currentAttribute & VDUBuffer.FULLWIDTH) != 0;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
188 int x = cursorColumn * bridge.charWidth;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
189 int y = (bridge.buffer.getCursorRow()
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
190 + bridge.buffer.screenBase - bridge.buffer.windowBase)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
191 * bridge.charHeight;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
192 // Save the current clip and translation
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
193 canvas.save();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
194 canvas.translate(x, y);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
195 canvas.clipRect(0, 0,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
196 bridge.charWidth * (onWideCharacter ? 2 : 1),
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
197 bridge.charHeight);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
198 canvas.drawPaint(cursorPaint);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
199 final int deadKey = bridge.getKeyHandler().getDeadKey();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
200
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
201 if (deadKey != 0) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
202 canvas.drawText(new char[] { (char)deadKey }, 0, 1, 0, 0, cursorStrokePaint);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
203 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
204
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
205 // Make sure we scale our decorations to the correct size.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
206 canvas.concat(scaleMatrix);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
207 int metaState = bridge.getKeyHandler().getMetaState();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
208
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
209 if ((metaState & TerminalKeyListener.META_SHIFT_ON) != 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
210 canvas.drawPath(shiftCursor, cursorStrokePaint);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
211 else if ((metaState & TerminalKeyListener.META_SHIFT_LOCK) != 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
212 canvas.drawPath(shiftCursor, cursorPaint);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
213
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
214 if ((metaState & TerminalKeyListener.META_ALT_ON) != 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
215 canvas.drawPath(altCursor, cursorStrokePaint);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
216 else if ((metaState & TerminalKeyListener.META_ALT_LOCK) != 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
217 canvas.drawPath(altCursor, cursorPaint);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
218
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
219 if ((metaState & TerminalKeyListener.META_CTRL_ON) != 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
220 canvas.drawPath(ctrlCursor, cursorStrokePaint);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
221 else if ((metaState & TerminalKeyListener.META_CTRL_LOCK) != 0)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
222 canvas.drawPath(ctrlCursor, cursorPaint);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
223
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
224 // Restore previous clip region
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
225 canvas.restore();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
226 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
227
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
228 // draw any highlighted area
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
229 if (bridge.isSelectingForCopy()) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
230 SelectionArea area = bridge.getSelectionArea();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
231 canvas.save(Canvas.CLIP_SAVE_FLAG);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
232 canvas.clipRect(
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
233 area.getLeft() * bridge.charWidth,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
234 area.getTop() * bridge.charHeight,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
235 (area.getRight() + 1) * bridge.charWidth,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
236 (area.getBottom() + 1) * bridge.charHeight
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
237 );
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
238 canvas.drawPaint(cursorPaint);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
239 canvas.restore();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
240 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
241 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
242 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
243
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
244 public void notifyUser(String message) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
245 if (!notifications)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
246 return;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
247
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
248 if (notification != null) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
249 // Don't keep telling the user the same thing.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
250 if (lastNotification != null && lastNotification.equals(message))
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
251 return;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
252
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
253 notification.setText(message);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
254 notification.show();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
255 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
256 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
257 notification = Toast.makeText(context, message, Toast.LENGTH_SHORT);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
258 notification.show();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
259 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
260
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
261 lastNotification = message;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
262 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
263
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
264 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
265 * Ask the {@link TerminalBridge} we're connected to to resize to a specific size.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
266 * @param width
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
267 * @param height
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
268 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
269 public void forceSize(int width, int height) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
270 bridge.resizeComputed(width, height, getWidth(), getHeight());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
271 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
272
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
273 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
274 * Sets the ability for the TerminalView to display Toast notifications to the user.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
275 * @param value whether to enable notifications or not
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
276 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
277 public void setNotifications(boolean value) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
278 notifications = value;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
279 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
280
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
281 @Override
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
282 public boolean onCheckIsTextEditor() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
283 return true;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
284 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
285
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
286 @Override
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
287 public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
288 outAttrs.imeOptions |=
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
289 EditorInfo.IME_FLAG_NO_EXTRACT_UI |
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
290 EditorInfo.IME_FLAG_NO_ENTER_ACTION |
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
291 EditorInfo.IME_ACTION_NONE;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
292 outAttrs.inputType = EditorInfo.TYPE_NULL;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
293 return new BaseInputConnection(this, false) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
294 @Override
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
295 public boolean deleteSurroundingText(int leftLength, int rightLength) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
296 if (rightLength == 0 && leftLength == 0) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
297 return this.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
298 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
299
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
300 for (int i = 0; i < leftLength; i++) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
301 this.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
302 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
303
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
304 // TODO: forward delete
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
305 return true;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
306 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
307 };
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
308 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
309
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
310 public void propagateConsoleText(char[] rawText, int length) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
311 if (mAccessibilityActive) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
312 synchronized (mAccessibilityLock) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
313 mAccessibilityBuffer.append(rawText, 0, length);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
314 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
315
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
316 if (mAccessibilityInitialized) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
317 if (mEventSender != null) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
318 removeCallbacks(mEventSender);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
319 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
320 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
321 mEventSender = new AccessibilityEventSender();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
322 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
323
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
324 postDelayed(mEventSender, ACCESSIBILITY_EVENT_THRESHOLD);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
325 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
326 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
327 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
328
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
329 private class AccessibilityEventSender implements Runnable {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
330 public void run() {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
331 synchronized (mAccessibilityLock) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
332 if (mCodeMatcher == null) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
333 mCodeMatcher = mControlCodes.matcher(mAccessibilityBuffer);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
334 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
335 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
336 mCodeMatcher.reset(mAccessibilityBuffer);
0ce5cc452d02 initial version
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337 }
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338
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339 // Strip all control codes out.
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340 mAccessibilityBuffer = new StringBuffer(mCodeMatcher.replaceAll(" "));
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341 // Apply Backspaces using backspace character sequence
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342 int i = mAccessibilityBuffer.indexOf(BACKSPACE_CODE);
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343
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344 while (i != -1) {
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345 mAccessibilityBuffer = mAccessibilityBuffer.replace(i == 0 ? 0 : i - 1, i
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346 + BACKSPACE_CODE.length(), "");
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347 i = mAccessibilityBuffer.indexOf(BACKSPACE_CODE);
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348 }
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349
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350 if (mAccessibilityBuffer.length() > 0) {
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351 AccessibilityEvent event = AccessibilityEvent.obtain(
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352 AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED);
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353 event.setFromIndex(0);
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354 event.setAddedCount(mAccessibilityBuffer.length());
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355 event.getText().add(mAccessibilityBuffer);
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356 sendAccessibilityEventUnchecked(event);
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357 mAccessibilityBuffer.setLength(0);
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358 }
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359 }
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Carl Byington <carl@five-ten-sg.com>
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360 }
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361 }
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362
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363 private class AccessibilityStateTester extends AsyncTask<Void, Void, Boolean> {
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364 @Override
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365 protected Boolean doInBackground(Void... params) {
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366 /*
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367 * Presumably if the accessibility manager is not enabled, we don't
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Carl Byington <carl@five-ten-sg.com>
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368 * need to send accessibility events.
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369 */
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370 final AccessibilityManager accessibility = (AccessibilityManager) context
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371 .getSystemService(Context.ACCESSIBILITY_SERVICE);
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372
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373 if (!accessibility.isEnabled()) {
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374 return false;
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Carl Byington <carl@five-ten-sg.com>
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375 }
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376
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Carl Byington <carl@five-ten-sg.com>
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377 /*
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378 * Restrict the set of intents to only accessibility services that
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379 * have the category FEEDBACK_SPOKEN (aka, screen readers).
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Carl Byington <carl@five-ten-sg.com>
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380 */
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381 final Intent screenReaderIntent = new Intent(SCREENREADER_INTENT_ACTION);
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382 screenReaderIntent.addCategory(SCREENREADER_INTENT_CATEGORY);
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Carl Byington <carl@five-ten-sg.com>
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383 final ContentResolver cr = context.getContentResolver();
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Carl Byington <carl@five-ten-sg.com>
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384 final List<ResolveInfo> screenReaders = context.getPackageManager().queryIntentServices(
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Carl Byington <carl@five-ten-sg.com>
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385 screenReaderIntent, 0);
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Carl Byington <carl@five-ten-sg.com>
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386 boolean foundScreenReader = false;
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Carl Byington <carl@five-ten-sg.com>
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387 final int N = screenReaders.size();
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388
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389 for (int i = 0; i < N; i++) {
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390 final ResolveInfo screenReader = screenReaders.get(i);
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Carl Byington <carl@five-ten-sg.com>
parents:
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391 /*
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392 * All screen readers are expected to implement a content
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Carl Byington <carl@five-ten-sg.com>
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393 * provider that responds to:
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Carl Byington <carl@five-ten-sg.com>
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394 * content://<nameofpackage>.providers.StatusProvider
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Carl Byington <carl@five-ten-sg.com>
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395 */
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396 final Cursor cursor = cr.query(
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Carl Byington <carl@five-ten-sg.com>
parents:
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397 Uri.parse("content://" + screenReader.serviceInfo.packageName
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
398 + ".providers.StatusProvider"), null, null, null, null);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
399
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Carl Byington <carl@five-ten-sg.com>
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diff changeset
400 if (cursor != null && cursor.moveToFirst()) {
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
401 /*
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
402 * These content providers use a special cursor that only has
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
403 * one element, an integer that is 1 if the screen reader is
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
404 * running.
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
405 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
406 final int status = cursor.getInt(0);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
407 cursor.close();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
408
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
409 if (status == 1) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
410 foundScreenReader = true;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
411 break;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
412 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
413 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
414 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
415
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
416 if (foundScreenReader) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
417 mControlCodes = Pattern.compile(CONTROL_CODE_PATTERN);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
418 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
419
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parents:
diff changeset
420 return foundScreenReader;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
421 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
422
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
423 @Override
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
424 protected void onPostExecute(Boolean result) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
425 mAccessibilityActive = result;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
426 mAccessibilityInitialized = true;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
427
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
428 if (result) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
429 mEventSender = new AccessibilityEventSender();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
430 postDelayed(mEventSender, ACCESSIBILITY_EVENT_THRESHOLD);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
431 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
432 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
433 mAccessibilityBuffer = null;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
434 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
435 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
436 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
437
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
438 private class ScaleListener extends ScaleGestureDetector.SimpleOnScaleGestureListener {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
439 @Override
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
440 public boolean onScale(ScaleGestureDetector detector) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
441 float mScaleFactor = detector.getScaleFactor();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
442
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
443 if (mScaleFactor > 1.1) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
444 bridge.increaseFontSize();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
445 return true;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
446 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
447 else if (mScaleFactor < 0.9) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
448 bridge.decreaseFontSize();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
449 return true;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
450 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
451
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
452 return (false);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
453 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
454 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
455
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
456 }