| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.systemui; |
| |
| import android.animation.ArgbEvaluator; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.res.Resources; |
| import android.content.res.TypedArray; |
| import android.database.ContentObserver; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Paint; |
| import android.graphics.Path; |
| import android.graphics.RectF; |
| import android.graphics.Typeface; |
| import android.net.Uri; |
| import android.os.BatteryManager; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.provider.Settings; |
| import android.util.AttributeSet; |
| import android.view.View; |
| |
| import com.android.systemui.statusbar.policy.BatteryController; |
| |
| public class BatteryMeterView extends View implements DemoMode, |
| BatteryController.BatteryStateChangeCallback { |
| public static final String TAG = BatteryMeterView.class.getSimpleName(); |
| public static final String ACTION_LEVEL_TEST = "com.android.systemui.BATTERY_LEVEL_TEST"; |
| public static final String SHOW_PERCENT_SETTING = "status_bar_show_battery_percent"; |
| |
| private static final boolean SINGLE_DIGIT_PERCENT = false; |
| |
| private static final int FULL = 96; |
| |
| private static final float BOLT_LEVEL_THRESHOLD = 0.3f; // opaque bolt below this fraction |
| |
| private final int[] mColors; |
| |
| private boolean mShowPercent; |
| private float mButtonHeightFraction; |
| private float mSubpixelSmoothingLeft; |
| private float mSubpixelSmoothingRight; |
| private final Paint mFramePaint, mBatteryPaint, mWarningTextPaint, mTextPaint, mBoltPaint; |
| private float mTextHeight, mWarningTextHeight; |
| private int mIconTint = Color.WHITE; |
| |
| private int mHeight; |
| private int mWidth; |
| private String mWarningString; |
| private final int mCriticalLevel; |
| private int mChargeColor; |
| private final float[] mBoltPoints; |
| private final Path mBoltPath = new Path(); |
| |
| private final RectF mFrame = new RectF(); |
| private final RectF mButtonFrame = new RectF(); |
| private final RectF mBoltFrame = new RectF(); |
| |
| private final Path mShapePath = new Path(); |
| private final Path mClipPath = new Path(); |
| private final Path mTextPath = new Path(); |
| |
| private BatteryController mBatteryController; |
| private boolean mPowerSaveEnabled; |
| |
| private int mDarkModeBackgroundColor; |
| private int mDarkModeFillColor; |
| |
| private int mLightModeBackgroundColor; |
| private int mLightModeFillColor; |
| |
| private BatteryTracker mTracker = new BatteryTracker(); |
| private final SettingObserver mSettingObserver = new SettingObserver(); |
| |
| public BatteryMeterView(Context context) { |
| this(context, null, 0); |
| } |
| |
| public BatteryMeterView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public BatteryMeterView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| |
| final Resources res = context.getResources(); |
| TypedArray atts = context.obtainStyledAttributes(attrs, R.styleable.BatteryMeterView, |
| defStyle, 0); |
| final int frameColor = atts.getColor(R.styleable.BatteryMeterView_frameColor, |
| context.getColor(R.color.batterymeter_frame_color)); |
| TypedArray levels = res.obtainTypedArray(R.array.batterymeter_color_levels); |
| TypedArray colors = res.obtainTypedArray(R.array.batterymeter_color_values); |
| |
| final int N = levels.length(); |
| mColors = new int[2*N]; |
| for (int i=0; i<N; i++) { |
| mColors[2*i] = levels.getInt(i, 0); |
| mColors[2*i+1] = colors.getColor(i, 0); |
| } |
| levels.recycle(); |
| colors.recycle(); |
| atts.recycle(); |
| updateShowPercent(); |
| mWarningString = context.getString(R.string.battery_meter_very_low_overlay_symbol); |
| mCriticalLevel = mContext.getResources().getInteger( |
| com.android.internal.R.integer.config_criticalBatteryWarningLevel); |
| mButtonHeightFraction = context.getResources().getFraction( |
| R.fraction.battery_button_height_fraction, 1, 1); |
| mSubpixelSmoothingLeft = context.getResources().getFraction( |
| R.fraction.battery_subpixel_smoothing_left, 1, 1); |
| mSubpixelSmoothingRight = context.getResources().getFraction( |
| R.fraction.battery_subpixel_smoothing_right, 1, 1); |
| |
| mFramePaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| mFramePaint.setColor(frameColor); |
| mFramePaint.setDither(true); |
| mFramePaint.setStrokeWidth(0); |
| mFramePaint.setStyle(Paint.Style.FILL_AND_STROKE); |
| |
| mBatteryPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| mBatteryPaint.setDither(true); |
| mBatteryPaint.setStrokeWidth(0); |
| mBatteryPaint.setStyle(Paint.Style.FILL_AND_STROKE); |
| |
| mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| Typeface font = Typeface.create("sans-serif-condensed", Typeface.BOLD); |
| mTextPaint.setTypeface(font); |
| mTextPaint.setTextAlign(Paint.Align.CENTER); |
| |
| mWarningTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| mWarningTextPaint.setColor(mColors[1]); |
| font = Typeface.create("sans-serif", Typeface.BOLD); |
| mWarningTextPaint.setTypeface(font); |
| mWarningTextPaint.setTextAlign(Paint.Align.CENTER); |
| |
| mChargeColor = context.getColor(R.color.batterymeter_charge_color); |
| |
| mBoltPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| mBoltPaint.setColor(context.getColor(R.color.batterymeter_bolt_color)); |
| mBoltPoints = loadBoltPoints(res); |
| |
| mDarkModeBackgroundColor = |
| context.getColor(R.color.dark_mode_icon_color_dual_tone_background); |
| mDarkModeFillColor = context.getColor(R.color.dark_mode_icon_color_dual_tone_fill); |
| mLightModeBackgroundColor = |
| context.getColor(R.color.light_mode_icon_color_dual_tone_background); |
| mLightModeFillColor = context.getColor(R.color.light_mode_icon_color_dual_tone_fill); |
| } |
| |
| @Override |
| public void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(Intent.ACTION_BATTERY_CHANGED); |
| filter.addAction(ACTION_LEVEL_TEST); |
| final Intent sticky = getContext().registerReceiver(mTracker, filter); |
| if (sticky != null) { |
| // preload the battery level |
| mTracker.onReceive(getContext(), sticky); |
| } |
| mBatteryController.addStateChangedCallback(this); |
| getContext().getContentResolver().registerContentObserver( |
| Settings.System.getUriFor(SHOW_PERCENT_SETTING), false, mSettingObserver); |
| } |
| |
| @Override |
| public void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| |
| getContext().unregisterReceiver(mTracker); |
| mBatteryController.removeStateChangedCallback(this); |
| getContext().getContentResolver().unregisterContentObserver(mSettingObserver); |
| } |
| |
| public void setBatteryController(BatteryController batteryController) { |
| mBatteryController = batteryController; |
| mPowerSaveEnabled = mBatteryController.isPowerSave(); |
| } |
| |
| @Override |
| public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) { |
| // TODO: Use this callback instead of own broadcast receiver. |
| } |
| |
| @Override |
| public void onPowerSaveChanged() { |
| mPowerSaveEnabled = mBatteryController.isPowerSave(); |
| invalidate(); |
| } |
| |
| private static float[] loadBoltPoints(Resources res) { |
| final int[] pts = res.getIntArray(R.array.batterymeter_bolt_points); |
| int maxX = 0, maxY = 0; |
| for (int i = 0; i < pts.length; i += 2) { |
| maxX = Math.max(maxX, pts[i]); |
| maxY = Math.max(maxY, pts[i + 1]); |
| } |
| final float[] ptsF = new float[pts.length]; |
| for (int i = 0; i < pts.length; i += 2) { |
| ptsF[i] = (float)pts[i] / maxX; |
| ptsF[i + 1] = (float)pts[i + 1] / maxY; |
| } |
| return ptsF; |
| } |
| |
| @Override |
| protected void onSizeChanged(int w, int h, int oldw, int oldh) { |
| mHeight = h; |
| mWidth = w; |
| mWarningTextPaint.setTextSize(h * 0.75f); |
| mWarningTextHeight = -mWarningTextPaint.getFontMetrics().ascent; |
| } |
| |
| private void updateShowPercent() { |
| mShowPercent = 0 != Settings.System.getInt(getContext().getContentResolver(), |
| SHOW_PERCENT_SETTING, 0); |
| } |
| |
| private int getColorForLevel(int percent) { |
| |
| // If we are in power save mode, always use the normal color. |
| if (mPowerSaveEnabled) { |
| return mColors[mColors.length-1]; |
| } |
| int thresh, color = 0; |
| for (int i=0; i<mColors.length; i+=2) { |
| thresh = mColors[i]; |
| color = mColors[i+1]; |
| if (percent <= thresh) { |
| |
| // Respect tinting for "normal" level |
| if (i == mColors.length-2) { |
| return mIconTint; |
| } else { |
| return color; |
| } |
| } |
| } |
| return color; |
| } |
| |
| public void setDarkIntensity(float darkIntensity) { |
| int backgroundColor = getBackgroundColor(darkIntensity); |
| int fillColor = getFillColor(darkIntensity); |
| mIconTint = fillColor; |
| mFramePaint.setColor(backgroundColor); |
| mBoltPaint.setColor(fillColor); |
| mChargeColor = fillColor; |
| invalidate(); |
| } |
| |
| private int getBackgroundColor(float darkIntensity) { |
| return getColorForDarkIntensity( |
| darkIntensity, mLightModeBackgroundColor, mDarkModeBackgroundColor); |
| } |
| |
| private int getFillColor(float darkIntensity) { |
| return getColorForDarkIntensity( |
| darkIntensity, mLightModeFillColor, mDarkModeFillColor); |
| } |
| |
| private int getColorForDarkIntensity(float darkIntensity, int lightColor, int darkColor) { |
| return (int) ArgbEvaluator.getInstance().evaluate(darkIntensity, lightColor, darkColor); |
| } |
| |
| @Override |
| public void draw(Canvas c) { |
| BatteryTracker tracker = mDemoMode ? mDemoTracker : mTracker; |
| final int level = tracker.level; |
| |
| if (level == BatteryTracker.UNKNOWN_LEVEL) return; |
| |
| float drawFrac = (float) level / 100f; |
| final int pt = getPaddingTop(); |
| final int pl = getPaddingLeft(); |
| final int pr = getPaddingRight(); |
| final int pb = getPaddingBottom(); |
| final int height = mHeight - pt - pb; |
| final int width = mWidth - pl - pr; |
| |
| final int buttonHeight = (int) (height * mButtonHeightFraction); |
| |
| mFrame.set(0, 0, width, height); |
| mFrame.offset(pl, pt); |
| |
| // button-frame: area above the battery body |
| mButtonFrame.set( |
| mFrame.left + Math.round(width * 0.25f), |
| mFrame.top, |
| mFrame.right - Math.round(width * 0.25f), |
| mFrame.top + buttonHeight); |
| |
| mButtonFrame.top += mSubpixelSmoothingLeft; |
| mButtonFrame.left += mSubpixelSmoothingLeft; |
| mButtonFrame.right -= mSubpixelSmoothingRight; |
| |
| // frame: battery body area |
| mFrame.top += buttonHeight; |
| mFrame.left += mSubpixelSmoothingLeft; |
| mFrame.top += mSubpixelSmoothingLeft; |
| mFrame.right -= mSubpixelSmoothingRight; |
| mFrame.bottom -= mSubpixelSmoothingRight; |
| |
| // set the battery charging color |
| mBatteryPaint.setColor(tracker.plugged ? mChargeColor : getColorForLevel(level)); |
| |
| if (level >= FULL) { |
| drawFrac = 1f; |
| } else if (level <= mCriticalLevel) { |
| drawFrac = 0f; |
| } |
| |
| final float levelTop = drawFrac == 1f ? mButtonFrame.top |
| : (mFrame.top + (mFrame.height() * (1f - drawFrac))); |
| |
| // define the battery shape |
| mShapePath.reset(); |
| mShapePath.moveTo(mButtonFrame.left, mButtonFrame.top); |
| mShapePath.lineTo(mButtonFrame.right, mButtonFrame.top); |
| mShapePath.lineTo(mButtonFrame.right, mFrame.top); |
| mShapePath.lineTo(mFrame.right, mFrame.top); |
| mShapePath.lineTo(mFrame.right, mFrame.bottom); |
| mShapePath.lineTo(mFrame.left, mFrame.bottom); |
| mShapePath.lineTo(mFrame.left, mFrame.top); |
| mShapePath.lineTo(mButtonFrame.left, mFrame.top); |
| mShapePath.lineTo(mButtonFrame.left, mButtonFrame.top); |
| |
| if (tracker.plugged) { |
| // define the bolt shape |
| final float bl = mFrame.left + mFrame.width() / 4.5f; |
| final float bt = mFrame.top + mFrame.height() / 6f; |
| final float br = mFrame.right - mFrame.width() / 7f; |
| final float bb = mFrame.bottom - mFrame.height() / 10f; |
| if (mBoltFrame.left != bl || mBoltFrame.top != bt |
| || mBoltFrame.right != br || mBoltFrame.bottom != bb) { |
| mBoltFrame.set(bl, bt, br, bb); |
| mBoltPath.reset(); |
| mBoltPath.moveTo( |
| mBoltFrame.left + mBoltPoints[0] * mBoltFrame.width(), |
| mBoltFrame.top + mBoltPoints[1] * mBoltFrame.height()); |
| for (int i = 2; i < mBoltPoints.length; i += 2) { |
| mBoltPath.lineTo( |
| mBoltFrame.left + mBoltPoints[i] * mBoltFrame.width(), |
| mBoltFrame.top + mBoltPoints[i + 1] * mBoltFrame.height()); |
| } |
| mBoltPath.lineTo( |
| mBoltFrame.left + mBoltPoints[0] * mBoltFrame.width(), |
| mBoltFrame.top + mBoltPoints[1] * mBoltFrame.height()); |
| } |
| |
| float boltPct = (mBoltFrame.bottom - levelTop) / (mBoltFrame.bottom - mBoltFrame.top); |
| boltPct = Math.min(Math.max(boltPct, 0), 1); |
| if (boltPct <= BOLT_LEVEL_THRESHOLD) { |
| // draw the bolt if opaque |
| c.drawPath(mBoltPath, mBoltPaint); |
| } else { |
| // otherwise cut the bolt out of the overall shape |
| mShapePath.op(mBoltPath, Path.Op.DIFFERENCE); |
| } |
| } |
| |
| // compute percentage text |
| boolean pctOpaque = false; |
| float pctX = 0, pctY = 0; |
| String pctText = null; |
| if (!tracker.plugged && level > mCriticalLevel && mShowPercent) { |
| mTextPaint.setColor(getColorForLevel(level)); |
| mTextPaint.setTextSize(height * |
| (SINGLE_DIGIT_PERCENT ? 0.75f |
| : (tracker.level == 100 ? 0.38f : 0.5f))); |
| mTextHeight = -mTextPaint.getFontMetrics().ascent; |
| pctText = String.valueOf(SINGLE_DIGIT_PERCENT ? (level/10) : level); |
| pctX = mWidth * 0.5f; |
| pctY = (mHeight + mTextHeight) * 0.47f; |
| pctOpaque = levelTop > pctY; |
| if (!pctOpaque) { |
| mTextPath.reset(); |
| mTextPaint.getTextPath(pctText, 0, pctText.length(), pctX, pctY, mTextPath); |
| // cut the percentage text out of the overall shape |
| mShapePath.op(mTextPath, Path.Op.DIFFERENCE); |
| } |
| } |
| |
| // draw the battery shape background |
| c.drawPath(mShapePath, mFramePaint); |
| |
| // draw the battery shape, clipped to charging level |
| mFrame.top = levelTop; |
| mClipPath.reset(); |
| mClipPath.addRect(mFrame, Path.Direction.CCW); |
| mShapePath.op(mClipPath, Path.Op.INTERSECT); |
| c.drawPath(mShapePath, mBatteryPaint); |
| |
| if (!tracker.plugged) { |
| if (level <= mCriticalLevel) { |
| // draw the warning text |
| final float x = mWidth * 0.5f; |
| final float y = (mHeight + mWarningTextHeight) * 0.48f; |
| c.drawText(mWarningString, x, y, mWarningTextPaint); |
| } else if (pctOpaque) { |
| // draw the percentage text |
| c.drawText(pctText, pctX, pctY, mTextPaint); |
| } |
| } |
| } |
| |
| @Override |
| public boolean hasOverlappingRendering() { |
| return false; |
| } |
| |
| private boolean mDemoMode; |
| private BatteryTracker mDemoTracker = new BatteryTracker(); |
| |
| @Override |
| public void dispatchDemoCommand(String command, Bundle args) { |
| if (!mDemoMode && command.equals(COMMAND_ENTER)) { |
| mDemoMode = true; |
| mDemoTracker.level = mTracker.level; |
| mDemoTracker.plugged = mTracker.plugged; |
| } else if (mDemoMode && command.equals(COMMAND_EXIT)) { |
| mDemoMode = false; |
| postInvalidate(); |
| } else if (mDemoMode && command.equals(COMMAND_BATTERY)) { |
| String level = args.getString("level"); |
| String plugged = args.getString("plugged"); |
| if (level != null) { |
| mDemoTracker.level = Math.min(Math.max(Integer.parseInt(level), 0), 100); |
| } |
| if (plugged != null) { |
| mDemoTracker.plugged = Boolean.parseBoolean(plugged); |
| } |
| postInvalidate(); |
| } |
| } |
| |
| private final class BatteryTracker extends BroadcastReceiver { |
| public static final int UNKNOWN_LEVEL = -1; |
| |
| // current battery status |
| int level = UNKNOWN_LEVEL; |
| String percentStr; |
| int plugType; |
| boolean plugged; |
| int health; |
| int status; |
| String technology; |
| int voltage; |
| int temperature; |
| boolean testmode = false; |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| final String action = intent.getAction(); |
| if (action.equals(Intent.ACTION_BATTERY_CHANGED)) { |
| if (testmode && ! intent.getBooleanExtra("testmode", false)) return; |
| |
| level = (int)(100f |
| * intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0) |
| / intent.getIntExtra(BatteryManager.EXTRA_SCALE, 100)); |
| |
| plugType = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0); |
| plugged = plugType != 0; |
| health = intent.getIntExtra(BatteryManager.EXTRA_HEALTH, |
| BatteryManager.BATTERY_HEALTH_UNKNOWN); |
| status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, |
| BatteryManager.BATTERY_STATUS_UNKNOWN); |
| technology = intent.getStringExtra(BatteryManager.EXTRA_TECHNOLOGY); |
| voltage = intent.getIntExtra(BatteryManager.EXTRA_VOLTAGE, 0); |
| temperature = intent.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, 0); |
| |
| setContentDescription( |
| context.getString(R.string.accessibility_battery_level, level)); |
| postInvalidate(); |
| } else if (action.equals(ACTION_LEVEL_TEST)) { |
| testmode = true; |
| post(new Runnable() { |
| int curLevel = 0; |
| int incr = 1; |
| int saveLevel = level; |
| int savePlugged = plugType; |
| Intent dummy = new Intent(Intent.ACTION_BATTERY_CHANGED); |
| @Override |
| public void run() { |
| if (curLevel < 0) { |
| testmode = false; |
| dummy.putExtra("level", saveLevel); |
| dummy.putExtra("plugged", savePlugged); |
| dummy.putExtra("testmode", false); |
| } else { |
| dummy.putExtra("level", curLevel); |
| dummy.putExtra("plugged", incr > 0 ? BatteryManager.BATTERY_PLUGGED_AC |
| : 0); |
| dummy.putExtra("testmode", true); |
| } |
| getContext().sendBroadcast(dummy); |
| |
| if (!testmode) return; |
| |
| curLevel += incr; |
| if (curLevel == 100) { |
| incr *= -1; |
| } |
| postDelayed(this, 200); |
| } |
| }); |
| } |
| } |
| } |
| |
| private final class SettingObserver extends ContentObserver { |
| public SettingObserver() { |
| super(new Handler()); |
| } |
| |
| @Override |
| public void onChange(boolean selfChange, Uri uri) { |
| super.onChange(selfChange, uri); |
| updateShowPercent(); |
| postInvalidate(); |
| } |
| } |
| |
| } |