Marcel Taeumel uploaded a new version of MorphicExtras to project The Trunk:
http://source.squeak.org/trunk/MorphicExtras-mt.291.mcz

==================== Summary ====================

Name: MorphicExtras-mt.291
Author: mt
Time: 15 April 2021, 11:46:31.400208 am
UUID: a73067c7-c5a4-4d20-9981-c11affd02c65
Ancestors: MorphicExtras-mt.290, MorphicExtras-ct.260

Merges MorphicExtras-ct.260 with the updated postscript to update all existing instances of FrameRateMorph.

=============== Diff against MorphicExtras-mt.290 ===============

Item was changed:
  StringMorph subclass: #FrameRateMorph
+ 	instanceVariableNames: 'lastDisplayTime framesSinceLastDisplay updateInterval mSecsPerFrame framesPerSec'
- 	instanceVariableNames: 'lastDisplayTime framesSinceLastDisplay'
  	classVariableNames: ''
  	poolDictionaries: ''
  	category: 'MorphicExtras-Demo'!

Item was added:
+ ----- Method: FrameRateMorph>>framesPerSec (in category 'accessing') -----
+ framesPerSec
+ 
+ 	^ framesPerSec!

Item was changed:
  ----- Method: FrameRateMorph>>initialize (in category 'initialization') -----
  initialize
  "initialize the state of the receiver"
  	super initialize.
  ""
+ 	lastDisplayTime := TimeStamp new.
- 	lastDisplayTime := 0.
  	framesSinceLastDisplay := 0.
+ 	self updateInterval: 500 milliSeconds.
  	self font: (Preferences standardMenuFont emphasized: 1).
  !

Item was added:
+ ----- Method: FrameRateMorph>>mSecsPerFrame (in category 'accessing') -----
+ mSecsPerFrame
+ 
+ 	^ mSecsPerFrame!

Item was changed:
  ----- Method: FrameRateMorph>>step (in category 'stepping and presenter') -----
  step
  	"Compute and display (every half second or so) the current framerate"
  
+ 	| now timePassed newContents |
- 	| now mSecs mSecsPerFrame framesPerSec newContents |
  	framesSinceLastDisplay := framesSinceLastDisplay + 1.
+ 	now := TimeStamp now.
+ 	timePassed := now - lastDisplayTime.
+ 	(timePassed > self updateInterval) ifTrue: 
+ 		[| mSecs |
+ 		mSecs := timePassed asMilliSeconds.
+ 		mSecsPerFrame := mSecs // framesSinceLastDisplay.
- 	now := Time millisecondClockValue.
- 	mSecs := now - lastDisplayTime.
- 	(mSecs > 500 or: [mSecs < 0 "clock wrap-around"]) ifTrue: 
- 		[mSecsPerFrame := mSecs // framesSinceLastDisplay.
  		framesPerSec := (framesSinceLastDisplay * 1000) // mSecs.
  		newContents := mSecsPerFrame printString, ' mSecs (', framesPerSec printString, ' frame', (framesPerSec = 1 ifTrue: [''] ifFalse: ['s']), '/sec)'.
  		self contents: newContents.
  		lastDisplayTime := now.
  		framesSinceLastDisplay := 0]
  	ifFalse:
  		["Ensure at least one pixel is drawn per frame"
  		Preferences higherPerformance ifTrue: [self invalidRect: (self position extent: 1 at 1)]]!

Item was added:
+ ----- Method: FrameRateMorph>>updateInterval (in category 'accessing') -----
+ updateInterval
+ 
+ 	^ updateInterval!

Item was added:
+ ----- Method: FrameRateMorph>>updateInterval: (in category 'accessing') -----
+ updateInterval: aNumber
+ 
+ 	updateInterval := aNumber!

Item was changed:
+ (PackageInfo named: 'MorphicExtras') postscript: 'FrameRateMorph allSubInstances do: [:frm | | wasStepping |
+ 	wasStepping := frm isStepping.
+ 	wasStepping ifTrue: [frm stopStepping].
+ 	frm
+ 		instVarNamed: #lastDisplayTime
+ 			put: DateAndTime now;
+ 		updateInterval: 500 milliSeconds.
+ 	wasStepping ifTrue: [frm startStepping]].'!
- (PackageInfo named: 'MorphicExtras') postscript: 'TrashCanMorph preserveTrash: Preferences preserveTrash.
- TrashCanMorph slideDismissalsToTrash: Preferences slideDismissalsToTrash.
- 
- Preferences removePreference: #preserveTrash.
- Preferences removePreference: #slideDismissalsToTrash.'!