File	Doc	Category	Size	Date	Package
KeyguardClockPositionAlgorithm.java	API Doc	Android 5.1 API	8258	Thu Mar 12 22:22:42 GMT 2015	com.android.systemui.statusbar.phone

KeyguardClockPositionAlgorithm

• java.lang.Object

Fields Summary
private static final float	SLOW_DOWN_FACTOR
private static final float	CLOCK_RUBBERBAND_FACTOR_MIN
private static final float	CLOCK_RUBBERBAND_FACTOR_MAX
private static final float	CLOCK_SCALE_FADE_START
private static final float	CLOCK_SCALE_FADE_END
private static final float	CLOCK_SCALE_FADE_END_NO_NOTIFS
private static final float	CLOCK_ADJ_TOP_PADDING_MULTIPLIER_MIN
private static final float	CLOCK_ADJ_TOP_PADDING_MULTIPLIER_MAX
private int	mClockNotificationsMarginMin
private int	mClockNotificationsMarginMax
private float	mClockYFractionMin
private float	mClockYFractionMax
private int	mMaxKeyguardNotifications
private int	mMaxPanelHeight
private float	mExpandedHeight
private int	mNotificationCount
private int	mHeight
private int	mKeyguardStatusHeight
private float	mEmptyDragAmount
private float	mDensity
private float	mMoreCardNotificationAmount The number (fractional) of notifications the "more" card counts when calculating how many notifications are currently visible for the y positioning of the clock.
private static final android.view.animation.PathInterpolator	sSlowDownInterpolator
private android.view.animation.AccelerateInterpolator	mAccelerateInterpolator

Constructors Summary

Methods Summary
private float	getClockAlpha(float scale) float fadeEnd = getNotificationAmountT() == 0.0f ? CLOCK_SCALE_FADE_END_NO_NOTIFS : CLOCK_SCALE_FADE_END; float alpha = (scale - fadeEnd) / (CLOCK_SCALE_FADE_START - fadeEnd); return Math.max(0, Math.min(1, alpha));
private int	getClockNotificationsPadding() float t = getNotificationAmountT(); t = Math.min(t, 1.0f); return (int) (t * mClockNotificationsMarginMin + (1 - t) * mClockNotificationsMarginMax);
private float	getClockScale(int notificationPadding, int clockY, int startPadding) float scaleMultiplier = getNotificationAmountT() == 0 ? 6.0f : 5.0f; float scaleEnd = clockY - mKeyguardStatusHeight * scaleMultiplier; float distanceToScaleEnd = notificationPadding - scaleEnd; float progress = distanceToScaleEnd / (startPadding - scaleEnd); progress = Math.max(0.0f, Math.min(progress, 1.0f)); progress = mAccelerateInterpolator.getInterpolation(progress); progress *= Math.pow(1 + mEmptyDragAmount / mDensity / 300, 0.3f); return progress;
private int	getClockY() return (int) (getClockYFraction() * mHeight);
private float	getClockYExpansionAdjustment() float rubberbandFactor = getClockYExpansionRubberbandFactor(); float value = (rubberbandFactor * (mMaxPanelHeight - mExpandedHeight)); float t = value / mMaxPanelHeight; float slowedDownValue = -sSlowDownInterpolator.getInterpolation(t) * SLOW_DOWN_FACTOR * mMaxPanelHeight; if (mNotificationCount == 0) { return (-2*value + slowedDownValue)/3; } else { return slowedDownValue; }
private float	getClockYExpansionRubberbandFactor() float t = getNotificationAmountT(); t = Math.min(t, 1.0f); t = (float) Math.pow(t, 0.3f); return (1 - t) * CLOCK_RUBBERBAND_FACTOR_MAX + t * CLOCK_RUBBERBAND_FACTOR_MIN;
private float	getClockYFraction() float t = getNotificationAmountT(); t = Math.min(t, 1.0f); return (1 - t) * mClockYFractionMax + t * mClockYFractionMin;
private float	getNotificationAmountT() return a value from 0 to 1 depending on how many notification there are return mNotificationCount / (mMaxKeyguardNotifications + mMoreCardNotificationAmount);
private float	getTopPaddingAdjMultiplier() float t = getNotificationAmountT(); t = Math.min(t, 1.0f); return (1 - t) * CLOCK_ADJ_TOP_PADDING_MULTIPLIER_MIN + t * CLOCK_ADJ_TOP_PADDING_MULTIPLIER_MAX;
public void	loadDimens(android.content.res.Resources res) Refreshes the dimension values. mClockNotificationsMarginMin = res.getDimensionPixelSize( R.dimen.keyguard_clock_notifications_margin_min); mClockNotificationsMarginMax = res.getDimensionPixelSize( R.dimen.keyguard_clock_notifications_margin_max); mClockYFractionMin = res.getFraction(R.fraction.keyguard_clock_y_fraction_min, 1, 1); mClockYFractionMax = res.getFraction(R.fraction.keyguard_clock_y_fraction_max, 1, 1); mMoreCardNotificationAmount = (float) res.getDimensionPixelSize(R.dimen.notification_summary_height) / res.getDimensionPixelSize(R.dimen.notification_min_height); mDensity = res.getDisplayMetrics().density;
public void	run(com.android.systemui.statusbar.phone.KeyguardClockPositionAlgorithm$Result result) int y = getClockY() - mKeyguardStatusHeight / 2; float clockAdjustment = getClockYExpansionAdjustment(); float topPaddingAdjMultiplier = getTopPaddingAdjMultiplier(); result.stackScrollerPaddingAdjustment = (int) (clockAdjustment*topPaddingAdjMultiplier); int clockNotificationsPadding = getClockNotificationsPadding() + result.stackScrollerPaddingAdjustment; int padding = y + clockNotificationsPadding; result.clockY = y; result.stackScrollerPadding = mKeyguardStatusHeight + padding; result.clockScale = getClockScale(result.stackScrollerPadding, result.clockY, y + getClockNotificationsPadding() + mKeyguardStatusHeight); result.clockAlpha = getClockAlpha(result.clockScale);
public void	setup(int maxKeyguardNotifications, int maxPanelHeight, float expandedHeight, int notificationCount, int height, int keyguardStatusHeight, float emptyDragAmount) mMaxKeyguardNotifications = maxKeyguardNotifications; mMaxPanelHeight = maxPanelHeight; mExpandedHeight = expandedHeight; mNotificationCount = notificationCount; mHeight = height; mKeyguardStatusHeight = keyguardStatusHeight; mEmptyDragAmount = emptyDragAmount;