Jason Monk | abe1974 | 2015-09-29 09:47:06 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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.systemui; |
| 18 | |
| 19 | import android.animation.ArgbEvaluator; |
| 20 | import android.annotation.Nullable; |
| 21 | import android.content.Context; |
| 22 | import android.content.res.Resources; |
| 23 | import android.content.res.TypedArray; |
| 24 | import android.database.ContentObserver; |
| 25 | import android.graphics.*; |
| 26 | import android.graphics.drawable.Drawable; |
| 27 | import android.net.Uri; |
| 28 | import android.os.Bundle; |
| 29 | import android.os.Handler; |
| 30 | import android.provider.Settings; |
| 31 | import com.android.systemui.statusbar.policy.BatteryController; |
| 32 | |
| 33 | public class BatteryMeterDrawable extends Drawable implements DemoMode, |
| 34 | BatteryController.BatteryStateChangeCallback { |
| 35 | |
| 36 | private static final float ASPECT_RATIO = 9.5f / 14.5f; |
| 37 | public static final String TAG = BatteryMeterDrawable.class.getSimpleName(); |
| 38 | public static final String SHOW_PERCENT_SETTING = "status_bar_show_battery_percent"; |
| 39 | |
| 40 | private static final boolean SINGLE_DIGIT_PERCENT = false; |
| 41 | |
| 42 | private static final int FULL = 96; |
| 43 | |
| 44 | private static final float BOLT_LEVEL_THRESHOLD = 0.3f; // opaque bolt below this fraction |
| 45 | |
| 46 | private final int[] mColors; |
| 47 | |
| 48 | private boolean mShowPercent; |
| 49 | private float mButtonHeightFraction; |
| 50 | private float mSubpixelSmoothingLeft; |
| 51 | private float mSubpixelSmoothingRight; |
| 52 | private final Paint mFramePaint, mBatteryPaint, mWarningTextPaint, mTextPaint, mBoltPaint; |
| 53 | private float mTextHeight, mWarningTextHeight; |
| 54 | private int mIconTint = Color.WHITE; |
| 55 | |
| 56 | private int mHeight; |
| 57 | private int mWidth; |
| 58 | private String mWarningString; |
| 59 | private final int mCriticalLevel; |
| 60 | private int mChargeColor; |
| 61 | private final float[] mBoltPoints; |
| 62 | private final Path mBoltPath = new Path(); |
| 63 | |
| 64 | private final RectF mFrame = new RectF(); |
| 65 | private final RectF mButtonFrame = new RectF(); |
| 66 | private final RectF mBoltFrame = new RectF(); |
| 67 | |
| 68 | private final Path mShapePath = new Path(); |
| 69 | private final Path mClipPath = new Path(); |
| 70 | private final Path mTextPath = new Path(); |
| 71 | |
| 72 | private BatteryController mBatteryController; |
| 73 | private boolean mPowerSaveEnabled; |
| 74 | |
| 75 | private int mDarkModeBackgroundColor; |
| 76 | private int mDarkModeFillColor; |
| 77 | |
| 78 | private int mLightModeBackgroundColor; |
| 79 | private int mLightModeFillColor; |
| 80 | |
| 81 | private final SettingObserver mSettingObserver = new SettingObserver(); |
| 82 | |
| 83 | private final Context mContext; |
| 84 | private final Handler mHandler; |
| 85 | |
| 86 | private int mLevel = -1; |
| 87 | private boolean mPluggedIn; |
| 88 | private boolean mListening; |
| 89 | |
| 90 | public BatteryMeterDrawable(Context context, Handler handler, int frameColor) { |
| 91 | mContext = context; |
| 92 | mHandler = handler; |
| 93 | final Resources res = context.getResources(); |
| 94 | TypedArray levels = res.obtainTypedArray(R.array.batterymeter_color_levels); |
| 95 | TypedArray colors = res.obtainTypedArray(R.array.batterymeter_color_values); |
| 96 | |
| 97 | final int N = levels.length(); |
| 98 | mColors = new int[2*N]; |
| 99 | for (int i=0; i<N; i++) { |
| 100 | mColors[2*i] = levels.getInt(i, 0); |
| 101 | mColors[2*i+1] = colors.getColor(i, 0); |
| 102 | } |
| 103 | levels.recycle(); |
| 104 | colors.recycle(); |
| 105 | updateShowPercent(); |
| 106 | mWarningString = context.getString(R.string.battery_meter_very_low_overlay_symbol); |
| 107 | mCriticalLevel = mContext.getResources().getInteger( |
| 108 | com.android.internal.R.integer.config_criticalBatteryWarningLevel); |
| 109 | mButtonHeightFraction = context.getResources().getFraction( |
| 110 | R.fraction.battery_button_height_fraction, 1, 1); |
| 111 | mSubpixelSmoothingLeft = context.getResources().getFraction( |
| 112 | R.fraction.battery_subpixel_smoothing_left, 1, 1); |
| 113 | mSubpixelSmoothingRight = context.getResources().getFraction( |
| 114 | R.fraction.battery_subpixel_smoothing_right, 1, 1); |
| 115 | |
| 116 | mFramePaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| 117 | mFramePaint.setColor(frameColor); |
| 118 | mFramePaint.setDither(true); |
| 119 | mFramePaint.setStrokeWidth(0); |
| 120 | mFramePaint.setStyle(Paint.Style.FILL_AND_STROKE); |
| 121 | |
| 122 | mBatteryPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| 123 | mBatteryPaint.setDither(true); |
| 124 | mBatteryPaint.setStrokeWidth(0); |
| 125 | mBatteryPaint.setStyle(Paint.Style.FILL_AND_STROKE); |
| 126 | |
| 127 | mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| 128 | Typeface font = Typeface.create("sans-serif-condensed", Typeface.BOLD); |
| 129 | mTextPaint.setTypeface(font); |
| 130 | mTextPaint.setTextAlign(Paint.Align.CENTER); |
| 131 | |
| 132 | mWarningTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| 133 | mWarningTextPaint.setColor(mColors[1]); |
| 134 | font = Typeface.create("sans-serif", Typeface.BOLD); |
| 135 | mWarningTextPaint.setTypeface(font); |
| 136 | mWarningTextPaint.setTextAlign(Paint.Align.CENTER); |
| 137 | |
| 138 | mChargeColor = context.getColor(R.color.batterymeter_charge_color); |
| 139 | |
| 140 | mBoltPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| 141 | mBoltPaint.setColor(context.getColor(R.color.batterymeter_bolt_color)); |
| 142 | mBoltPoints = loadBoltPoints(res); |
| 143 | |
| 144 | mDarkModeBackgroundColor = |
| 145 | context.getColor(R.color.dark_mode_icon_color_dual_tone_background); |
| 146 | mDarkModeFillColor = context.getColor(R.color.dark_mode_icon_color_dual_tone_fill); |
| 147 | mLightModeBackgroundColor = |
| 148 | context.getColor(R.color.light_mode_icon_color_dual_tone_background); |
| 149 | mLightModeFillColor = context.getColor(R.color.light_mode_icon_color_dual_tone_fill); |
| 150 | } |
| 151 | |
| 152 | public void startListening() { |
| 153 | mListening = true; |
| 154 | mContext.getContentResolver().registerContentObserver( |
| 155 | Settings.System.getUriFor(SHOW_PERCENT_SETTING), false, mSettingObserver); |
| 156 | if (mDemoMode) return; |
| 157 | mBatteryController.addStateChangedCallback(this); |
| 158 | } |
| 159 | |
| 160 | public void stopListening() { |
| 161 | mListening = false; |
| 162 | mContext.getContentResolver().unregisterContentObserver(mSettingObserver); |
| 163 | if (mDemoMode) return; |
| 164 | mBatteryController.removeStateChangedCallback(this); |
| 165 | } |
| 166 | |
| 167 | private void postInvalidate() { |
| 168 | mHandler.post(new Runnable() { |
| 169 | @Override |
| 170 | public void run() { |
| 171 | invalidateSelf(); |
| 172 | } |
| 173 | }); |
| 174 | } |
| 175 | |
| 176 | public void setBatteryController(BatteryController batteryController) { |
| 177 | mBatteryController = batteryController; |
| 178 | mPowerSaveEnabled = mBatteryController.isPowerSave(); |
| 179 | } |
| 180 | |
| 181 | @Override |
| 182 | public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) { |
| 183 | mLevel = level; |
| 184 | mPluggedIn = pluggedIn; |
| 185 | |
| 186 | postInvalidate(); |
| 187 | } |
| 188 | |
| 189 | @Override |
| 190 | public void onPowerSaveChanged() { |
| 191 | mPowerSaveEnabled = mBatteryController.isPowerSave(); |
| 192 | invalidateSelf(); |
| 193 | } |
| 194 | |
| 195 | private static float[] loadBoltPoints(Resources res) { |
| 196 | final int[] pts = res.getIntArray(R.array.batterymeter_bolt_points); |
| 197 | int maxX = 0, maxY = 0; |
| 198 | for (int i = 0; i < pts.length; i += 2) { |
| 199 | maxX = Math.max(maxX, pts[i]); |
| 200 | maxY = Math.max(maxY, pts[i + 1]); |
| 201 | } |
| 202 | final float[] ptsF = new float[pts.length]; |
| 203 | for (int i = 0; i < pts.length; i += 2) { |
| 204 | ptsF[i] = (float)pts[i] / maxX; |
| 205 | ptsF[i + 1] = (float)pts[i + 1] / maxY; |
| 206 | } |
| 207 | return ptsF; |
| 208 | } |
| 209 | |
| 210 | @Override |
| 211 | public void setBounds(int left, int top, int right, int bottom) { |
| 212 | super.setBounds(left, top, right, bottom); |
| 213 | mHeight = bottom - top; |
| 214 | mWidth = right - left; |
| 215 | mWarningTextPaint.setTextSize(mHeight * 0.75f); |
| 216 | mWarningTextHeight = -mWarningTextPaint.getFontMetrics().ascent; |
| 217 | } |
| 218 | |
| 219 | private void updateShowPercent() { |
| 220 | mShowPercent = 0 != Settings.System.getInt(mContext.getContentResolver(), |
| 221 | SHOW_PERCENT_SETTING, 0); |
| 222 | } |
| 223 | |
| 224 | private int getColorForLevel(int percent) { |
| 225 | |
| 226 | // If we are in power save mode, always use the normal color. |
| 227 | if (mPowerSaveEnabled) { |
| 228 | return mColors[mColors.length-1]; |
| 229 | } |
| 230 | int thresh, color = 0; |
| 231 | for (int i=0; i<mColors.length; i+=2) { |
| 232 | thresh = mColors[i]; |
| 233 | color = mColors[i+1]; |
| 234 | if (percent <= thresh) { |
| 235 | |
| 236 | // Respect tinting for "normal" level |
| 237 | if (i == mColors.length-2) { |
| 238 | return mIconTint; |
| 239 | } else { |
| 240 | return color; |
| 241 | } |
| 242 | } |
| 243 | } |
| 244 | return color; |
| 245 | } |
| 246 | |
| 247 | public void setDarkIntensity(float darkIntensity) { |
| 248 | int backgroundColor = getBackgroundColor(darkIntensity); |
| 249 | int fillColor = getFillColor(darkIntensity); |
| 250 | mIconTint = fillColor; |
| 251 | mFramePaint.setColor(backgroundColor); |
| 252 | mBoltPaint.setColor(fillColor); |
| 253 | mChargeColor = fillColor; |
| 254 | invalidateSelf(); |
| 255 | } |
| 256 | |
| 257 | private int getBackgroundColor(float darkIntensity) { |
| 258 | return getColorForDarkIntensity( |
| 259 | darkIntensity, mLightModeBackgroundColor, mDarkModeBackgroundColor); |
| 260 | } |
| 261 | |
| 262 | private int getFillColor(float darkIntensity) { |
| 263 | return getColorForDarkIntensity( |
| 264 | darkIntensity, mLightModeFillColor, mDarkModeFillColor); |
| 265 | } |
| 266 | |
| 267 | private int getColorForDarkIntensity(float darkIntensity, int lightColor, int darkColor) { |
| 268 | return (int) ArgbEvaluator.getInstance().evaluate(darkIntensity, lightColor, darkColor); |
| 269 | } |
| 270 | |
| 271 | @Override |
| 272 | public void draw(Canvas c) { |
| 273 | final int level = mLevel; |
| 274 | |
| 275 | if (level == -1) return; |
| 276 | |
| 277 | float drawFrac = (float) level / 100f; |
| 278 | final int height = mHeight; |
| 279 | final int width = (int) (ASPECT_RATIO * mHeight); |
| 280 | int px = (mWidth - width) / 2; |
| 281 | |
| 282 | final int buttonHeight = (int) (height * mButtonHeightFraction); |
| 283 | |
| 284 | mFrame.set(0, 0, width, height); |
| 285 | mFrame.offset(px, 0); |
| 286 | |
| 287 | // button-frame: area above the battery body |
| 288 | mButtonFrame.set( |
| 289 | mFrame.left + Math.round(width * 0.25f), |
| 290 | mFrame.top, |
| 291 | mFrame.right - Math.round(width * 0.25f), |
| 292 | mFrame.top + buttonHeight); |
| 293 | |
| 294 | mButtonFrame.top += mSubpixelSmoothingLeft; |
| 295 | mButtonFrame.left += mSubpixelSmoothingLeft; |
| 296 | mButtonFrame.right -= mSubpixelSmoothingRight; |
| 297 | |
| 298 | // frame: battery body area |
| 299 | mFrame.top += buttonHeight; |
| 300 | mFrame.left += mSubpixelSmoothingLeft; |
| 301 | mFrame.top += mSubpixelSmoothingLeft; |
| 302 | mFrame.right -= mSubpixelSmoothingRight; |
| 303 | mFrame.bottom -= mSubpixelSmoothingRight; |
| 304 | |
| 305 | // set the battery charging color |
| 306 | mBatteryPaint.setColor(mPluggedIn ? mChargeColor : getColorForLevel(level)); |
| 307 | |
| 308 | if (level >= FULL) { |
| 309 | drawFrac = 1f; |
| 310 | } else if (level <= mCriticalLevel) { |
| 311 | drawFrac = 0f; |
| 312 | } |
| 313 | |
| 314 | final float levelTop = drawFrac == 1f ? mButtonFrame.top |
| 315 | : (mFrame.top + (mFrame.height() * (1f - drawFrac))); |
| 316 | |
| 317 | // define the battery shape |
| 318 | mShapePath.reset(); |
| 319 | mShapePath.moveTo(mButtonFrame.left, mButtonFrame.top); |
| 320 | mShapePath.lineTo(mButtonFrame.right, mButtonFrame.top); |
| 321 | mShapePath.lineTo(mButtonFrame.right, mFrame.top); |
| 322 | mShapePath.lineTo(mFrame.right, mFrame.top); |
| 323 | mShapePath.lineTo(mFrame.right, mFrame.bottom); |
| 324 | mShapePath.lineTo(mFrame.left, mFrame.bottom); |
| 325 | mShapePath.lineTo(mFrame.left, mFrame.top); |
| 326 | mShapePath.lineTo(mButtonFrame.left, mFrame.top); |
| 327 | mShapePath.lineTo(mButtonFrame.left, mButtonFrame.top); |
| 328 | |
| 329 | if (mPluggedIn) { |
| 330 | // define the bolt shape |
| 331 | final float bl = mFrame.left + mFrame.width() / 4.5f; |
| 332 | final float bt = mFrame.top + mFrame.height() / 6f; |
| 333 | final float br = mFrame.right - mFrame.width() / 7f; |
| 334 | final float bb = mFrame.bottom - mFrame.height() / 10f; |
| 335 | if (mBoltFrame.left != bl || mBoltFrame.top != bt |
| 336 | || mBoltFrame.right != br || mBoltFrame.bottom != bb) { |
| 337 | mBoltFrame.set(bl, bt, br, bb); |
| 338 | mBoltPath.reset(); |
| 339 | mBoltPath.moveTo( |
| 340 | mBoltFrame.left + mBoltPoints[0] * mBoltFrame.width(), |
| 341 | mBoltFrame.top + mBoltPoints[1] * mBoltFrame.height()); |
| 342 | for (int i = 2; i < mBoltPoints.length; i += 2) { |
| 343 | mBoltPath.lineTo( |
| 344 | mBoltFrame.left + mBoltPoints[i] * mBoltFrame.width(), |
| 345 | mBoltFrame.top + mBoltPoints[i + 1] * mBoltFrame.height()); |
| 346 | } |
| 347 | mBoltPath.lineTo( |
| 348 | mBoltFrame.left + mBoltPoints[0] * mBoltFrame.width(), |
| 349 | mBoltFrame.top + mBoltPoints[1] * mBoltFrame.height()); |
| 350 | } |
| 351 | |
| 352 | float boltPct = (mBoltFrame.bottom - levelTop) / (mBoltFrame.bottom - mBoltFrame.top); |
| 353 | boltPct = Math.min(Math.max(boltPct, 0), 1); |
| 354 | if (boltPct <= BOLT_LEVEL_THRESHOLD) { |
| 355 | // draw the bolt if opaque |
| 356 | c.drawPath(mBoltPath, mBoltPaint); |
| 357 | } else { |
| 358 | // otherwise cut the bolt out of the overall shape |
| 359 | mShapePath.op(mBoltPath, Path.Op.DIFFERENCE); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | // compute percentage text |
| 364 | boolean pctOpaque = false; |
| 365 | float pctX = 0, pctY = 0; |
| 366 | String pctText = null; |
| 367 | if (!mPluggedIn && level > mCriticalLevel && mShowPercent) { |
| 368 | mTextPaint.setColor(getColorForLevel(level)); |
| 369 | mTextPaint.setTextSize(height * |
| 370 | (SINGLE_DIGIT_PERCENT ? 0.75f |
| 371 | : (mLevel == 100 ? 0.38f : 0.5f))); |
| 372 | mTextHeight = -mTextPaint.getFontMetrics().ascent; |
| 373 | pctText = String.valueOf(SINGLE_DIGIT_PERCENT ? (level/10) : level); |
| 374 | pctX = mWidth * 0.5f; |
| 375 | pctY = (mHeight + mTextHeight) * 0.47f; |
| 376 | pctOpaque = levelTop > pctY; |
| 377 | if (!pctOpaque) { |
| 378 | mTextPath.reset(); |
| 379 | mTextPaint.getTextPath(pctText, 0, pctText.length(), pctX, pctY, mTextPath); |
| 380 | // cut the percentage text out of the overall shape |
| 381 | mShapePath.op(mTextPath, Path.Op.DIFFERENCE); |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | // draw the battery shape background |
| 386 | c.drawPath(mShapePath, mFramePaint); |
| 387 | |
| 388 | // draw the battery shape, clipped to charging level |
| 389 | mFrame.top = levelTop; |
| 390 | mClipPath.reset(); |
| 391 | mClipPath.addRect(mFrame, Path.Direction.CCW); |
| 392 | mShapePath.op(mClipPath, Path.Op.INTERSECT); |
| 393 | c.drawPath(mShapePath, mBatteryPaint); |
| 394 | |
| 395 | if (!mPluggedIn) { |
| 396 | if (level <= mCriticalLevel) { |
| 397 | // draw the warning text |
| 398 | final float x = mWidth * 0.5f; |
| 399 | final float y = (mHeight + mWarningTextHeight) * 0.48f; |
| 400 | c.drawText(mWarningString, x, y, mWarningTextPaint); |
| 401 | } else if (pctOpaque) { |
| 402 | // draw the percentage text |
| 403 | c.drawText(pctText, pctX, pctY, mTextPaint); |
| 404 | } |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | // Some stuff required by Drawable. |
| 409 | @Override |
| 410 | public void setAlpha(int alpha) { |
| 411 | } |
| 412 | |
| 413 | @Override |
| 414 | public void setColorFilter(@Nullable ColorFilter colorFilter) { |
| 415 | } |
| 416 | |
| 417 | @Override |
| 418 | public int getOpacity() { |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | private boolean mDemoMode; |
| 423 | |
| 424 | @Override |
| 425 | public void dispatchDemoCommand(String command, Bundle args) { |
| 426 | if (!mDemoMode && command.equals(COMMAND_ENTER)) { |
| 427 | mBatteryController.removeStateChangedCallback(this); |
| 428 | mDemoMode = true; |
| 429 | if (mListening) { |
| 430 | mBatteryController.removeStateChangedCallback(this); |
| 431 | } |
| 432 | } else if (mDemoMode && command.equals(COMMAND_EXIT)) { |
| 433 | mDemoMode = false; |
| 434 | postInvalidate(); |
| 435 | if (mListening) { |
| 436 | mBatteryController.addStateChangedCallback(this); |
| 437 | } |
| 438 | } else if (mDemoMode && command.equals(COMMAND_BATTERY)) { |
| 439 | String level = args.getString("level"); |
| 440 | String plugged = args.getString("plugged"); |
| 441 | if (level != null) { |
| 442 | mLevel = Math.min(Math.max(Integer.parseInt(level), 0), 100); |
| 443 | } |
| 444 | if (plugged != null) { |
| 445 | mPluggedIn = Boolean.parseBoolean(plugged); |
| 446 | } |
| 447 | postInvalidate(); |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | private final class SettingObserver extends ContentObserver { |
| 452 | public SettingObserver() { |
| 453 | super(new Handler()); |
| 454 | } |
| 455 | |
| 456 | @Override |
| 457 | public void onChange(boolean selfChange, Uri uri) { |
| 458 | super.onChange(selfChange, uri); |
| 459 | updateShowPercent(); |
| 460 | postInvalidate(); |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | } |