Dmitri Plotnikov | de3eec2 | 2011-01-17 18:23:37 -0800 | [diff] [blame] | 1 | /* |
Justin Klaassen | 4459516 | 2015-05-28 17:55:20 -0700 | [diff] [blame] | 2 | * Copyright (C) 2015 The Android Open Source Project |
Dmitri Plotnikov | de3eec2 | 2011-01-17 18:23:37 -0800 | [diff] [blame] | 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 | * |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
Dmitri Plotnikov | de3eec2 | 2011-01-17 18:23:37 -0800 | [diff] [blame] | 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.calculator2; |
| 18 | |
Hans Boehm | 4a6b7cb | 2015-04-03 18:41:52 -0700 | [diff] [blame] | 19 | import android.content.ClipData; |
Justin Klaassen | 4459516 | 2015-05-28 17:55:20 -0700 | [diff] [blame] | 20 | import android.content.ClipboardManager; |
Dmitri Plotnikov | de3eec2 | 2011-01-17 18:23:37 -0800 | [diff] [blame] | 21 | import android.content.Context; |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 22 | import android.content.res.TypedArray; |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 23 | import android.text.Layout; |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 24 | import android.text.TextPaint; |
Justin Klaassen | 4459516 | 2015-05-28 17:55:20 -0700 | [diff] [blame] | 25 | import android.text.method.ScrollingMovementMethod; |
Dmitri Plotnikov | de3eec2 | 2011-01-17 18:23:37 -0800 | [diff] [blame] | 26 | import android.util.AttributeSet; |
Hongwei Wang | 245925e | 2014-05-11 14:38:47 -0700 | [diff] [blame] | 27 | import android.util.TypedValue; |
Gilles Debunne | f57b8b4 | 2011-01-27 10:54:07 -0800 | [diff] [blame] | 28 | import android.view.ActionMode; |
| 29 | import android.view.Menu; |
Hans Boehm | 4a6b7cb | 2015-04-03 18:41:52 -0700 | [diff] [blame] | 30 | import android.view.MenuInflater; |
Gilles Debunne | f57b8b4 | 2011-01-27 10:54:07 -0800 | [diff] [blame] | 31 | import android.view.MenuItem; |
Hans Boehm | 76b7815 | 2015-04-17 10:50:35 -0700 | [diff] [blame] | 32 | import android.view.View; |
Justin Klaassen | fed941a | 2014-06-09 18:42:40 +0100 | [diff] [blame] | 33 | import android.widget.TextView; |
Dmitri Plotnikov | de3eec2 | 2011-01-17 18:23:37 -0800 | [diff] [blame] | 34 | |
Hans Boehm | 8461495 | 2014-11-25 18:46:17 -0800 | [diff] [blame] | 35 | /** |
Hans Boehm | 08e8f32 | 2015-04-21 13:18:38 -0700 | [diff] [blame] | 36 | * TextView adapted for Calculator display. |
Hans Boehm | 8461495 | 2014-11-25 18:46:17 -0800 | [diff] [blame] | 37 | */ |
Justin Klaassen | 4459516 | 2015-05-28 17:55:20 -0700 | [diff] [blame] | 38 | public class CalculatorText extends AlignedTextView implements View.OnLongClickListener { |
Alan Viverette | 461992d | 2014-03-07 13:29:56 -0800 | [diff] [blame] | 39 | |
Justin Klaassen | 4459516 | 2015-05-28 17:55:20 -0700 | [diff] [blame] | 40 | private final ActionMode.Callback mPasteActionModeCallback = new ActionMode.Callback() { |
Gilles Debunne | f57b8b4 | 2011-01-27 10:54:07 -0800 | [diff] [blame] | 41 | @Override |
| 42 | public boolean onActionItemClicked(ActionMode mode, MenuItem item) { |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 43 | if (item.getItemId() == R.id.menu_paste) { |
| 44 | paste(); |
Hans Boehm | 4a6b7cb | 2015-04-03 18:41:52 -0700 | [diff] [blame] | 45 | mode.finish(); |
| 46 | return true; |
Hans Boehm | 4a6b7cb | 2015-04-03 18:41:52 -0700 | [diff] [blame] | 47 | } |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 48 | return false; |
Gilles Debunne | f57b8b4 | 2011-01-27 10:54:07 -0800 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | @Override |
| 52 | public boolean onCreateActionMode(ActionMode mode, Menu menu) { |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 53 | final ClipboardManager clipboard = (ClipboardManager) getContext() |
| 54 | .getSystemService(Context.CLIPBOARD_SERVICE); |
Hans Boehm | 4a6b7cb | 2015-04-03 18:41:52 -0700 | [diff] [blame] | 55 | if (clipboard.hasPrimaryClip()) { |
| 56 | MenuInflater inflater = mode.getMenuInflater(); |
| 57 | inflater.inflate(R.menu.paste, menu); |
| 58 | return true; |
| 59 | } |
Gilles Debunne | f57b8b4 | 2011-01-27 10:54:07 -0800 | [diff] [blame] | 60 | // Prevents the selection action mode on double tap. |
| 61 | return false; |
| 62 | } |
| 63 | |
| 64 | @Override |
Gilles Debunne | f57b8b4 | 2011-01-27 10:54:07 -0800 | [diff] [blame] | 65 | public boolean onPrepareActionMode(ActionMode mode, Menu menu) { |
| 66 | return false; |
| 67 | } |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 68 | |
| 69 | @Override |
| 70 | public void onDestroyActionMode(ActionMode mode) { |
| 71 | mActionMode = null; |
| 72 | } |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 73 | }; |
| 74 | |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 75 | // Temporary paint for use in layout methods. |
| 76 | private final TextPaint mTempPaint = new TextPaint(); |
Hans Boehm | 4a6b7cb | 2015-04-03 18:41:52 -0700 | [diff] [blame] | 77 | |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 78 | private final float mMaximumTextSize; |
| 79 | private final float mMinimumTextSize; |
| 80 | private final float mStepTextSize; |
| 81 | |
| 82 | private int mWidthConstraint = -1; |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 83 | |
| 84 | private ActionMode mActionMode; |
| 85 | |
| 86 | private OnPasteListener mOnPasteListener; |
Justin Klaassen | fed941a | 2014-06-09 18:42:40 +0100 | [diff] [blame] | 87 | private OnTextSizeChangeListener mOnTextSizeChangeListener; |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 88 | |
Hans Boehm | 08e8f32 | 2015-04-21 13:18:38 -0700 | [diff] [blame] | 89 | public CalculatorText(Context context) { |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 90 | this(context, null /* attrs */); |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 91 | } |
| 92 | |
Hans Boehm | 08e8f32 | 2015-04-21 13:18:38 -0700 | [diff] [blame] | 93 | public CalculatorText(Context context, AttributeSet attrs) { |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 94 | this(context, attrs, 0 /* defStyleAttr */); |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 95 | } |
| 96 | |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 97 | public CalculatorText(Context context, AttributeSet attrs, int defStyleAttr) { |
| 98 | super(context, attrs, defStyleAttr); |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 99 | |
| 100 | final TypedArray a = context.obtainStyledAttributes( |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 101 | attrs, R.styleable.CalculatorText, defStyleAttr, 0); |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 102 | mMaximumTextSize = a.getDimension( |
Hans Boehm | 08e8f32 | 2015-04-21 13:18:38 -0700 | [diff] [blame] | 103 | R.styleable.CalculatorText_maxTextSize, getTextSize()); |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 104 | mMinimumTextSize = a.getDimension( |
Hans Boehm | 08e8f32 | 2015-04-21 13:18:38 -0700 | [diff] [blame] | 105 | R.styleable.CalculatorText_minTextSize, getTextSize()); |
| 106 | mStepTextSize = a.getDimension(R.styleable.CalculatorText_stepTextSize, |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 107 | (mMaximumTextSize - mMinimumTextSize) / 3); |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 108 | a.recycle(); |
| 109 | |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 110 | // Allow scrolling by default. |
Hans Boehm | 08e8f32 | 2015-04-21 13:18:38 -0700 | [diff] [blame] | 111 | setMovementMethod(ScrollingMovementMethod.getInstance()); |
| 112 | |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 113 | // Reset the clickable flag, which is added when specifying a movement method. |
| 114 | setClickable(false); |
| 115 | |
| 116 | // Add a long click to start the ActionMode manually. |
| 117 | setOnLongClickListener(this); |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | @Override |
Hans Boehm | 76b7815 | 2015-04-17 10:50:35 -0700 | [diff] [blame] | 121 | public boolean onLongClick(View v) { |
Hans Boehm | 1176f23 | 2015-05-11 16:26:03 -0700 | [diff] [blame] | 122 | mActionMode = startActionMode(mPasteActionModeCallback, ActionMode.TYPE_FLOATING); |
Hans Boehm | 76b7815 | 2015-04-17 10:50:35 -0700 | [diff] [blame] | 123 | return true; |
| 124 | } |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 125 | |
| 126 | @Override |
| 127 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
Justin Klaassen | 4459516 | 2015-05-28 17:55:20 -0700 | [diff] [blame] | 128 | // Prevent shrinking/resizing with our variable textSize. |
| 129 | if (!isLaidOut()) { |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 130 | setTextSize(TypedValue.COMPLEX_UNIT_PX, mMaximumTextSize); |
Justin Klaassen | 4459516 | 2015-05-28 17:55:20 -0700 | [diff] [blame] | 131 | setMinHeight(getLineHeight() + getCompoundPaddingBottom() + getCompoundPaddingTop()); |
| 132 | } |
| 133 | |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 134 | // Re-calculate our textSize based on new width. |
| 135 | final int width = MeasureSpec.getSize(widthMeasureSpec) |
Justin Klaassen | 4459516 | 2015-05-28 17:55:20 -0700 | [diff] [blame] | 136 | - getPaddingLeft() - getPaddingRight(); |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 137 | if (mWidthConstraint != width) { |
| 138 | mWidthConstraint = width; |
| 139 | setTextSize(TypedValue.COMPLEX_UNIT_PX, getVariableTextSize(getText())); |
| 140 | } |
| 141 | |
| 142 | super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 143 | } |
| 144 | |
Hans Boehm | 8461495 | 2014-11-25 18:46:17 -0800 | [diff] [blame] | 145 | public int getWidthConstraint() { return mWidthConstraint; } |
| 146 | |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 147 | @Override |
| 148 | protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) { |
| 149 | super.onTextChanged(text, start, lengthBefore, lengthAfter); |
Justin Klaassen | bfc4e4d | 2014-08-27 10:56:49 -0700 | [diff] [blame] | 150 | |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 151 | setTextSize(TypedValue.COMPLEX_UNIT_PX, getVariableTextSize(text.toString())); |
| 152 | } |
| 153 | |
Justin Klaassen | fed941a | 2014-06-09 18:42:40 +0100 | [diff] [blame] | 154 | @Override |
| 155 | public void setTextSize(int unit, float size) { |
| 156 | final float oldTextSize = getTextSize(); |
| 157 | super.setTextSize(unit, size); |
| 158 | |
| 159 | if (mOnTextSizeChangeListener != null && getTextSize() != oldTextSize) { |
| 160 | mOnTextSizeChangeListener.onTextSizeChanged(this, oldTextSize); |
| 161 | } |
| 162 | } |
| 163 | |
Justin Klaassen | 4459516 | 2015-05-28 17:55:20 -0700 | [diff] [blame] | 164 | public float getMinimumTextSize() { |
| 165 | return mMinimumTextSize; |
| 166 | } |
| 167 | |
| 168 | public float getMaximumTextSize() { |
| 169 | return mMaximumTextSize; |
| 170 | } |
| 171 | |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 172 | public float getVariableTextSize(CharSequence text) { |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 173 | if (mWidthConstraint < 0 || mMaximumTextSize <= mMinimumTextSize) { |
| 174 | // Not measured, bail early. |
| 175 | return getTextSize(); |
| 176 | } |
| 177 | |
Justin Klaassen | 2be4fdb | 2014-08-06 19:54:09 -0700 | [diff] [blame] | 178 | // Capture current paint state. |
| 179 | mTempPaint.set(getPaint()); |
| 180 | |
| 181 | // Step through increasing text sizes until the text would no longer fit. |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 182 | float lastFitTextSize = mMinimumTextSize; |
| 183 | while (lastFitTextSize < mMaximumTextSize) { |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 184 | mTempPaint.setTextSize(Math.min(lastFitTextSize + mStepTextSize, mMaximumTextSize)); |
| 185 | if (Layout.getDesiredWidth(text, mTempPaint) > mWidthConstraint) { |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 186 | break; |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 187 | } |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 188 | lastFitTextSize = mTempPaint.getTextSize(); |
Justin Klaassen | 4b3af05 | 2014-05-27 17:53:10 -0700 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | return lastFitTextSize; |
| 192 | } |
| 193 | |
Hans Boehm | 1176f23 | 2015-05-11 16:26:03 -0700 | [diff] [blame] | 194 | public boolean stopActionMode() { |
| 195 | if (mActionMode != null) { |
| 196 | mActionMode.finish(); |
| 197 | return true; |
| 198 | } |
| 199 | return false; |
| 200 | } |
| 201 | |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 202 | public void setOnTextSizeChangeListener(OnTextSizeChangeListener listener) { |
| 203 | mOnTextSizeChangeListener = listener; |
| 204 | } |
| 205 | |
| 206 | public void setOnPasteListener(OnPasteListener listener) { |
| 207 | mOnPasteListener = listener; |
| 208 | } |
| 209 | |
| 210 | private void paste() { |
| 211 | final ClipboardManager clipboard = (ClipboardManager) getContext() |
| 212 | .getSystemService(Context.CLIPBOARD_SERVICE); |
| 213 | final ClipData primaryClip = clipboard.getPrimaryClip(); |
| 214 | if (primaryClip != null && mOnPasteListener != null) { |
| 215 | mOnPasteListener.onPaste(primaryClip); |
| 216 | } |
| 217 | } |
| 218 | |
Justin Klaassen | fed941a | 2014-06-09 18:42:40 +0100 | [diff] [blame] | 219 | public interface OnTextSizeChangeListener { |
| 220 | void onTextSizeChanged(TextView textView, float oldSize); |
| 221 | } |
Hans Boehm | 4a6b7cb | 2015-04-03 18:41:52 -0700 | [diff] [blame] | 222 | |
Justin Klaassen | fc5ac82 | 2015-06-18 13:15:17 -0700 | [diff] [blame^] | 223 | public interface OnPasteListener { |
| 224 | boolean onPaste(ClipData clip); |
Hans Boehm | 4a6b7cb | 2015-04-03 18:41:52 -0700 | [diff] [blame] | 225 | } |
Dmitri Plotnikov | de3eec2 | 2011-01-17 18:23:37 -0800 | [diff] [blame] | 226 | } |