Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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.calculator2; |
| 18 | |
Annie Chin | 0e88baa | 2016-11-28 15:23:07 -0800 | [diff] [blame] | 19 | import android.animation.ArgbEvaluator; |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 20 | import android.support.v7.widget.RecyclerView; |
| 21 | import android.view.View; |
| 22 | import android.widget.TextView; |
| 23 | |
| 24 | /** |
| 25 | * Contains the logic for animating the recyclerview elements on drag. |
| 26 | */ |
| 27 | public final class DragController { |
| 28 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 29 | private static final String TAG = "DragController"; |
| 30 | |
Annie Chin | 0e88baa | 2016-11-28 15:23:07 -0800 | [diff] [blame] | 31 | private static final ArgbEvaluator mColorEvaluator = new ArgbEvaluator(); |
| 32 | |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 33 | // References to views from the Calculator Display. |
| 34 | private CalculatorFormula mDisplayFormula; |
| 35 | private CalculatorResult mDisplayResult; |
| 36 | private View mToolbar; |
| 37 | |
| 38 | private int mFormulaTranslationY; |
| 39 | private int mFormulaTranslationX; |
| 40 | private float mFormulaScale; |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 41 | private float mResultScale; |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 42 | |
Annie Chin | fe7a410 | 2016-12-02 16:21:04 -0800 | [diff] [blame] | 43 | private float mResultTranslationY; |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 44 | private int mResultTranslationX; |
| 45 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 46 | private int mDisplayHeight; |
| 47 | |
Annie Chin | 0e88baa | 2016-11-28 15:23:07 -0800 | [diff] [blame] | 48 | private int mFormulaStartColor; |
| 49 | private int mFormulaEndColor; |
| 50 | |
| 51 | private int mResultStartColor; |
| 52 | private int mResultEndColor; |
| 53 | |
Annie Chin | 3614798 | 2016-12-01 15:07:34 -0800 | [diff] [blame] | 54 | // The padding at the bottom of the RecyclerView itself. |
| 55 | private int mBottomPaddingHeight; |
| 56 | |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 57 | private boolean mAnimationInitialized; |
| 58 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 59 | private AnimationController mAnimationController; |
| 60 | |
| 61 | private Evaluator mEvaluator; |
| 62 | |
| 63 | public void setEvaluator(Evaluator evaluator) { |
| 64 | mEvaluator = evaluator; |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 65 | } |
| 66 | |
Annie Chin | 94c1bd9 | 2016-11-23 13:39:56 -0800 | [diff] [blame] | 67 | public void initializeController(boolean isResult) { |
| 68 | if (EvaluatorStateUtils.isDisplayEmpty(mEvaluator)) { |
| 69 | // Empty display |
| 70 | mAnimationController = new EmptyAnimationController(); |
| 71 | } else if (isResult) { |
| 72 | // Result |
| 73 | mAnimationController = new ResultAnimationController(); |
| 74 | } else { |
| 75 | // There is something in the formula field. There may or may not be |
| 76 | // a quick result. |
| 77 | mAnimationController = new AnimationController(); |
| 78 | } |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 79 | } |
| 80 | |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 81 | public void setDisplayFormula(CalculatorFormula formula) { |
| 82 | mDisplayFormula = formula; |
| 83 | } |
| 84 | |
| 85 | public void setDisplayResult(CalculatorResult result) { |
| 86 | mDisplayResult = result; |
| 87 | } |
| 88 | |
| 89 | public void setToolbar(View toolbar) { |
| 90 | mToolbar = toolbar; |
| 91 | } |
| 92 | |
Annie Chin | 0e88baa | 2016-11-28 15:23:07 -0800 | [diff] [blame] | 93 | public void animateViews(float yFraction, RecyclerView recyclerView) { |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 94 | final HistoryAdapter.ViewHolder vh = (HistoryAdapter.ViewHolder) |
Annie Chin | ab657d4 | 2016-11-03 16:43:59 -0700 | [diff] [blame] | 95 | recyclerView.findViewHolderForAdapterPosition(0); |
Annie Chin | efa259a | 2016-11-23 14:15:15 -0800 | [diff] [blame] | 96 | if (yFraction > 0) { |
| 97 | recyclerView.setVisibility(View.VISIBLE); |
| 98 | } |
Annie Chin | 9179623 | 2016-11-16 17:27:36 -0800 | [diff] [blame] | 99 | if (vh != null && !EvaluatorStateUtils.isDisplayEmpty(mEvaluator)) { |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 100 | final AlignedTextView formula = vh.getFormula(); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 101 | final CalculatorResult result = vh.getResult(); |
| 102 | final TextView date = vh.getDate(); |
Annie Chin | 3614798 | 2016-12-01 15:07:34 -0800 | [diff] [blame] | 103 | final View divider = vh.getDivider(); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 104 | |
| 105 | if (!mAnimationInitialized) { |
Annie Chin | 3614798 | 2016-12-01 15:07:34 -0800 | [diff] [blame] | 106 | mBottomPaddingHeight = recyclerView.getPaddingBottom(); |
| 107 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 108 | mAnimationController.initializeScales(formula, result); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 109 | |
Annie Chin | 0e88baa | 2016-11-28 15:23:07 -0800 | [diff] [blame] | 110 | mAnimationController.initializeColorAnimators(formula, result); |
| 111 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 112 | mAnimationController.initializeFormulaTranslationX(formula); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 113 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 114 | mAnimationController.initializeFormulaTranslationY(formula, result); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 115 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 116 | mAnimationController.initializeResultTranslationX(result); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 117 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 118 | mAnimationController.initializeResultTranslationY(result); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 119 | |
| 120 | mAnimationInitialized = true; |
| 121 | } |
| 122 | |
| 123 | if (mAnimationInitialized) { |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 124 | result.setScaleX(mAnimationController.getResultScale(yFraction)); |
| 125 | result.setScaleY(mAnimationController.getResultScale(yFraction)); |
| 126 | |
| 127 | formula.setScaleX(mAnimationController.getFormulaScale(yFraction)); |
| 128 | formula.setScaleY(mAnimationController.getFormulaScale(yFraction)); |
| 129 | |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 130 | formula.setPivotX(formula.getWidth() - formula.getPaddingEnd()); |
| 131 | formula.setPivotY(formula.getHeight() - formula.getPaddingBottom()); |
| 132 | |
| 133 | result.setPivotX(result.getWidth() - result.getPaddingEnd()); |
| 134 | result.setPivotY(result.getHeight() - result.getPaddingBottom()); |
| 135 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 136 | formula.setTranslationX(mAnimationController.getFormulaTranslationX(yFraction)); |
| 137 | formula.setTranslationY(mAnimationController.getFormulaTranslationY(yFraction)); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 138 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 139 | result.setTranslationX(mAnimationController.getResultTranslationX(yFraction)); |
| 140 | result.setTranslationY(mAnimationController.getResultTranslationY(yFraction)); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 141 | |
Annie Chin | 0e88baa | 2016-11-28 15:23:07 -0800 | [diff] [blame] | 142 | formula.setTextColor((int) mColorEvaluator.evaluate(yFraction, mFormulaStartColor, |
| 143 | mFormulaEndColor)); |
| 144 | |
| 145 | result.setTextColor((int) mColorEvaluator.evaluate(yFraction, mResultStartColor, |
| 146 | mResultEndColor)); |
| 147 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 148 | date.setTranslationY(mAnimationController.getDateTranslationY(yFraction)); |
Annie Chin | 3614798 | 2016-12-01 15:07:34 -0800 | [diff] [blame] | 149 | divider.setTranslationY(mAnimationController.getDateTranslationY(yFraction)); |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 150 | } |
Annie Chin | 9179623 | 2016-11-16 17:27:36 -0800 | [diff] [blame] | 151 | } else if (EvaluatorStateUtils.isDisplayEmpty(mEvaluator)) { |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 152 | // There is no current expression but we still need to collect information |
| 153 | // to translate the other viewholders. |
| 154 | if (!mAnimationInitialized) { |
| 155 | mAnimationController.initializeDisplayHeight(); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 156 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 157 | mAnimationInitialized = true; |
| 158 | } |
| 159 | } |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 160 | |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 161 | // Move up all ViewHolders above the current expression; if there is no current expression, |
| 162 | // we're translating all the viewholders. |
| 163 | for (int i = recyclerView.getChildCount() - 1; |
| 164 | i >= mAnimationController.getFirstTranslatedViewHolderIndex(); |
| 165 | --i) { |
| 166 | final RecyclerView.ViewHolder vh2 = |
| 167 | recyclerView.getChildViewHolder(recyclerView.getChildAt(i)); |
| 168 | if (vh2 != null) { |
| 169 | final View view = vh2.itemView; |
| 170 | if (view != null) { |
| 171 | view.setTranslationY( |
| 172 | mAnimationController.getHistoryElementTranslationY(yFraction)); |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 173 | } |
| 174 | } |
| 175 | } |
| 176 | } |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 177 | |
| 178 | /** |
Annie Chin | b2e9618 | 2016-11-28 13:14:54 -0800 | [diff] [blame] | 179 | * Reset all initialized values. |
| 180 | * If the DragLayout is closed, set recyclerview to INVISIBLE to avoid flickering. |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 181 | */ |
Annie Chin | b2e9618 | 2016-11-28 13:14:54 -0800 | [diff] [blame] | 182 | public void initializeAnimation(RecyclerView recyclerView, boolean isResult, boolean isOpen) { |
| 183 | recyclerView.setVisibility(isOpen ? View.VISIBLE : View.INVISIBLE); |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 184 | mAnimationInitialized = false; |
Annie Chin | 94c1bd9 | 2016-11-23 13:39:56 -0800 | [diff] [blame] | 185 | initializeController(isResult); |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | public interface AnimateTextInterface { |
| 189 | |
| 190 | void initializeDisplayHeight(); |
| 191 | |
Annie Chin | 0e88baa | 2016-11-28 15:23:07 -0800 | [diff] [blame] | 192 | void initializeColorAnimators(AlignedTextView formula, CalculatorResult result); |
| 193 | |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 194 | void initializeScales(AlignedTextView formula, CalculatorResult result); |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 195 | |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 196 | void initializeFormulaTranslationX(AlignedTextView formula); |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 197 | |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 198 | void initializeFormulaTranslationY(AlignedTextView formula, CalculatorResult result); |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 199 | |
| 200 | void initializeResultTranslationX(CalculatorResult result); |
| 201 | |
| 202 | void initializeResultTranslationY(CalculatorResult result); |
| 203 | |
| 204 | float getResultTranslationX(float yFraction); |
| 205 | |
| 206 | float getResultTranslationY(float yFraction); |
| 207 | |
| 208 | float getResultScale(float yFraction); |
| 209 | |
| 210 | float getFormulaScale(float yFraction); |
| 211 | |
| 212 | float getFormulaTranslationX(float yFraction); |
| 213 | |
| 214 | float getFormulaTranslationY(float yFraction); |
| 215 | |
| 216 | float getDateTranslationY(float yFraction); |
| 217 | |
| 218 | float getHistoryElementTranslationY(float yFraction); |
| 219 | |
| 220 | // Return the lowest index of the first Viewholder to be translated upwards. |
| 221 | // If there is no current expression, we translate all the viewholders; otherwise, |
| 222 | // we start at index 1. |
| 223 | int getFirstTranslatedViewHolderIndex(); |
| 224 | } |
| 225 | |
| 226 | // The default AnimationController when Display is in INPUT state and DisplayFormula is not |
| 227 | // empty. There may or may not be a quick result. |
| 228 | public class AnimationController implements DragController.AnimateTextInterface { |
| 229 | |
| 230 | public void initializeDisplayHeight() { |
| 231 | // no-op |
| 232 | } |
| 233 | |
Annie Chin | 0e88baa | 2016-11-28 15:23:07 -0800 | [diff] [blame] | 234 | public void initializeColorAnimators(AlignedTextView formula, CalculatorResult result) { |
| 235 | mFormulaStartColor = mDisplayFormula.getCurrentTextColor(); |
| 236 | mFormulaEndColor = formula.getCurrentTextColor(); |
| 237 | |
| 238 | mResultStartColor = mDisplayResult.getCurrentTextColor(); |
| 239 | mResultEndColor = result.getCurrentTextColor(); |
| 240 | } |
| 241 | |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 242 | public void initializeScales(AlignedTextView formula, CalculatorResult result) { |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 243 | // Calculate the scale for the text |
| 244 | mFormulaScale = (mDisplayFormula.getTextSize() * 1.0f) / formula.getTextSize(); |
| 245 | } |
| 246 | |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 247 | public void initializeFormulaTranslationY(AlignedTextView formula, |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 248 | CalculatorResult result) { |
| 249 | // Baseline of formula moves by the difference in formula bottom padding and the |
| 250 | // difference in result height. |
| 251 | mFormulaTranslationY = |
| 252 | mDisplayFormula.getPaddingBottom() - formula.getPaddingBottom() |
Annie Chin | 3614798 | 2016-12-01 15:07:34 -0800 | [diff] [blame] | 253 | + mDisplayResult.getHeight() - result.getHeight() |
| 254 | - mBottomPaddingHeight; |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 255 | |
| 256 | } |
| 257 | |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 258 | public void initializeFormulaTranslationX(AlignedTextView formula) { |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 259 | // Right border of formula moves by the difference in formula end padding. |
| 260 | mFormulaTranslationX = mDisplayFormula.getPaddingEnd() - formula.getPaddingEnd(); |
| 261 | } |
| 262 | |
| 263 | public void initializeResultTranslationY(CalculatorResult result) { |
| 264 | // Baseline of result moves by the difference in result bottom padding. |
Annie Chin | 3614798 | 2016-12-01 15:07:34 -0800 | [diff] [blame] | 265 | mResultTranslationY = mDisplayResult.getPaddingBottom() - result.getPaddingBottom() |
| 266 | - mBottomPaddingHeight; |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 267 | } |
| 268 | |
| 269 | public void initializeResultTranslationX(CalculatorResult result) { |
| 270 | mResultTranslationX = mDisplayResult.getPaddingEnd() - result.getPaddingEnd(); |
| 271 | } |
| 272 | |
| 273 | public float getResultTranslationX(float yFraction) { |
| 274 | return (mResultTranslationX * yFraction) - mResultTranslationX; |
| 275 | } |
| 276 | |
| 277 | public float getResultTranslationY(float yFraction) { |
| 278 | return (mResultTranslationY * yFraction) - mResultTranslationY; |
| 279 | } |
| 280 | |
| 281 | public float getResultScale(float yFraction) { |
| 282 | return 1; |
| 283 | } |
| 284 | |
| 285 | public float getFormulaScale(float yFraction) { |
| 286 | return mFormulaScale - (mFormulaScale * yFraction) + yFraction; |
| 287 | } |
| 288 | |
| 289 | public float getFormulaTranslationX(float yFraction) { |
| 290 | return (mFormulaTranslationX * yFraction) - |
| 291 | mFormulaTranslationX; |
| 292 | } |
| 293 | |
| 294 | public float getFormulaTranslationY(float yFraction) { |
| 295 | // Scale linearly between -FormulaTranslationY and 0. |
| 296 | return (mFormulaTranslationY * yFraction) - mFormulaTranslationY; |
| 297 | } |
| 298 | |
| 299 | public float getDateTranslationY(float yFraction) { |
| 300 | // We also want the date to start out above the visible screen with |
| 301 | // this distance decreasing as it's pulled down. |
Annie Chin | 5a2bebb | 2016-12-06 14:38:49 -0800 | [diff] [blame^] | 302 | // Account for the scaled formula height. |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 303 | return -mToolbar.getHeight() * (1 - yFraction) |
Annie Chin | 5a2bebb | 2016-12-06 14:38:49 -0800 | [diff] [blame^] | 304 | + getFormulaTranslationY(yFraction) |
| 305 | - mDisplayFormula.getHeight() /getFormulaScale(yFraction) * (1 - yFraction); |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 306 | } |
| 307 | |
| 308 | public float getHistoryElementTranslationY(float yFraction) { |
| 309 | return getDateTranslationY(yFraction); |
| 310 | } |
| 311 | |
| 312 | public int getFirstTranslatedViewHolderIndex() { |
| 313 | return 1; |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | // The default AnimationController when Display is in RESULT state. |
| 318 | public class ResultAnimationController extends AnimationController |
| 319 | implements DragController.AnimateTextInterface { |
| 320 | @Override |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 321 | public void initializeScales(AlignedTextView formula, CalculatorResult result) { |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 322 | final float textSize = mDisplayResult.getTextSize() * mDisplayResult.getScaleX(); |
| 323 | mResultScale = textSize / result.getTextSize(); |
| 324 | |
| 325 | mFormulaScale = 1; |
| 326 | } |
| 327 | |
| 328 | @Override |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 329 | public void initializeFormulaTranslationY(AlignedTextView formula, |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 330 | CalculatorResult result) { |
| 331 | // Baseline of formula moves by the difference in formula bottom padding and the |
| 332 | // difference in the result height. |
| 333 | mFormulaTranslationY = mDisplayFormula.getPaddingBottom() - formula.getPaddingBottom() |
Annie Chin | 3614798 | 2016-12-01 15:07:34 -0800 | [diff] [blame] | 334 | + mDisplayResult.getHeight() - result.getHeight() |
| 335 | - mBottomPaddingHeight; |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 336 | } |
| 337 | |
| 338 | @Override |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 339 | public void initializeFormulaTranslationX(AlignedTextView formula) { |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 340 | // Right border of formula moves by the difference in formula end padding. |
| 341 | mFormulaTranslationX = mDisplayFormula.getPaddingEnd() - formula.getPaddingEnd(); |
| 342 | } |
| 343 | |
| 344 | @Override |
| 345 | public void initializeResultTranslationY(CalculatorResult result) { |
| 346 | // Baseline of result moves by the difference in result bottom padding. |
Annie Chin | fe7a410 | 2016-12-02 16:21:04 -0800 | [diff] [blame] | 347 | mResultTranslationY = mDisplayResult.getPaddingBottom() - result.getPaddingBottom() |
| 348 | - mDisplayResult.getTranslationY() |
| 349 | - mBottomPaddingHeight; |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 350 | } |
| 351 | |
| 352 | @Override |
| 353 | public void initializeResultTranslationX(CalculatorResult result) { |
| 354 | mResultTranslationX = mDisplayResult.getPaddingEnd() - result.getPaddingEnd(); |
| 355 | } |
| 356 | |
| 357 | @Override |
| 358 | public float getResultTranslationX(float yFraction) { |
| 359 | return (mResultTranslationX * yFraction) - mResultTranslationX; |
| 360 | } |
| 361 | |
| 362 | @Override |
| 363 | public float getResultTranslationY(float yFraction) { |
| 364 | return (mResultTranslationY * yFraction) - mResultTranslationY; |
| 365 | } |
| 366 | |
| 367 | @Override |
| 368 | public float getFormulaTranslationX(float yFraction) { |
| 369 | return (mFormulaTranslationX * yFraction) - |
| 370 | mFormulaTranslationX; |
| 371 | } |
| 372 | |
| 373 | @Override |
| 374 | public float getFormulaTranslationY(float yFraction) { |
| 375 | return getDateTranslationY(yFraction); |
| 376 | } |
| 377 | |
| 378 | @Override |
| 379 | public float getResultScale(float yFraction) { |
| 380 | return mResultScale - (mResultScale * yFraction) + yFraction; |
| 381 | } |
| 382 | |
| 383 | @Override |
| 384 | public float getFormulaScale(float yFraction) { |
| 385 | return 1; |
| 386 | } |
| 387 | |
| 388 | @Override |
| 389 | public float getDateTranslationY(float yFraction) { |
| 390 | // We also want the date to start out above the visible screen with |
| 391 | // this distance decreasing as it's pulled down. |
| 392 | return -mToolbar.getHeight() * (1 - yFraction) |
| 393 | + (mResultTranslationY * yFraction) - mResultTranslationY |
| 394 | - mDisplayFormula.getPaddingTop() + |
| 395 | (mDisplayFormula.getPaddingTop() * yFraction); |
| 396 | } |
| 397 | |
| 398 | @Override |
| 399 | public int getFirstTranslatedViewHolderIndex() { |
| 400 | return 1; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | // The default AnimationController when Display is completely empty. |
| 405 | public class EmptyAnimationController extends AnimationController |
| 406 | implements DragController.AnimateTextInterface { |
| 407 | @Override |
| 408 | public void initializeDisplayHeight() { |
| 409 | mDisplayHeight = mToolbar.getHeight() + mDisplayResult.getHeight() |
| 410 | + mDisplayFormula.getHeight(); |
| 411 | } |
| 412 | |
| 413 | @Override |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 414 | public void initializeScales(AlignedTextView formula, CalculatorResult result) { |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 415 | // no-op |
| 416 | } |
| 417 | |
| 418 | @Override |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 419 | public void initializeFormulaTranslationY(AlignedTextView formula, |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 420 | CalculatorResult result) { |
| 421 | // no-op |
| 422 | } |
| 423 | |
| 424 | @Override |
Annie Chin | 8149c8c | 2016-11-28 13:44:09 -0800 | [diff] [blame] | 425 | public void initializeFormulaTranslationX(AlignedTextView formula) { |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 426 | // no-op |
| 427 | } |
| 428 | |
| 429 | @Override |
| 430 | public void initializeResultTranslationY(CalculatorResult result) { |
| 431 | // no-op |
| 432 | } |
| 433 | |
| 434 | @Override |
| 435 | public void initializeResultTranslationX(CalculatorResult result) { |
| 436 | // no-op |
| 437 | } |
| 438 | |
| 439 | @Override |
| 440 | public float getResultTranslationX(float yFraction) { |
| 441 | return 0; |
| 442 | } |
| 443 | |
| 444 | @Override |
| 445 | public float getResultTranslationY(float yFraction) { |
| 446 | return 0; |
| 447 | } |
| 448 | |
| 449 | @Override |
| 450 | public float getFormulaScale(float yFraction) { |
| 451 | return 1; |
| 452 | } |
| 453 | |
| 454 | @Override |
| 455 | public float getDateTranslationY(float yFraction) { |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | @Override |
| 460 | public float getHistoryElementTranslationY(float yFraction) { |
Annie Chin | 3614798 | 2016-12-01 15:07:34 -0800 | [diff] [blame] | 461 | return -mDisplayHeight * (1 - yFraction) - mBottomPaddingHeight; |
Annie Chin | bc00188 | 2016-11-09 19:41:21 -0800 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | @Override |
| 465 | public int getFirstTranslatedViewHolderIndex() { |
| 466 | return 0; |
| 467 | } |
| 468 | } |
Annie Chin | d0f87d2 | 2016-10-24 09:04:12 -0700 | [diff] [blame] | 469 | } |