[Bug] Resizable/Fullscreen blank screen

[Matthew SmithParticipant]

This might be a possible bug.  If you start with the window as Resizable then change to Fullscreen (F12) it renders ok, but if you start on Fullscreen it displays nothing.

Can anyone confirm this is the case? if so i’ll raise it.

[Matthew SmithParticipant]

Monkey

[crayon-5cba82b5ce622365430000 inline="true" ]'System #Import "<std>" #Import "<mojo>" Using mojo.. Using std.. ' Globals Global window:MainWindow Function Main() New AppInstance() window = New MainWindow("Main Window",1024,768,WindowFlags.Resizable) 'Fullscreen/Resizable App.Run() End Class MainWindow Extends Window Field IsPaused:Bool Field IsSuspended:Bool Field ShowFPS:Bool=True Method New(title:String, width:Int, height:Int, flags:WindowFlags) ' Setup display Super.New(title, width, height, flags) 'Virtual Resolution Layout = "letterbox" MinSize=New Vec2i(640,480) MaxSize=New Vec2i(width,height) ClearColor = Color.Black Mouse.PointerVisible=False End Method Method OnRender(canvas:Canvas) Override 'Render App.RequestRender() 'Message Local message:String="Hello from Monkey2!" canvas.Color=Color.White canvas.DrawText(message,Width/2-Style.DefaultFont.TextWidth(message)/2,Height/2) 'System If (ShowFPS) canvas.DrawText("FPS-" + App.FPS,0,0) End Method Method OnKeyEvent( event:KeyEvent ) Override Select event.Type Case EventType.KeyDown Select event.Key Case Key.F12 Fullscreen = Not Fullscreen Case Key.Escape App.Terminate() Case Key.F ShowFPS=Not ShowFPS End End End Method OnWindowEvent(event:WindowEvent) Override Select event.Type Case EventType.WindowMoved Case EventType.WindowResized App.RequestRender() Case EventType.WindowGainedFocus Self.IsSuspended = False Case EventType.WindowLostFocus Self.IsSuspended = True Default Super.OnWindowEvent(event) End End End Class

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[crayon-5cba82b5ce622365430000 inline="true" ]'System #Import "<std>" #Import "<mojo>"   Using mojo.. Using std..   ' Globals Global window:MainWindow   Function Main() New AppInstance() window = New MainWindow("Main Window",1024,768,WindowFlags.Resizable) 'Fullscreen/Resizable App.Run() End   Class MainWindow Extends Window Field IsPaused:Bool Field IsSuspended:Bool Field ShowFPS:Bool=True   Method New(title:String, width:Int, height:Int, flags:WindowFlags) ' Setup display Super.New(title, width, height, flags) 'Virtual Resolution Layout = "letterbox" MinSize=New Vec2i(640,480) MaxSize=New Vec2i(width,height) ClearColor = Color.Black Mouse.PointerVisible=False End Method Method OnRender(canvas:Canvas) Override 'Render App.RequestRender() 'Message Local message:String="Hello from Monkey2!" canvas.Color=Color.White canvas.DrawText(message,Width/2-Style.DefaultFont.TextWidth(message)/2,Height/2) 'System If (ShowFPS) canvas.DrawText("FPS-" + App.FPS,0,0) End Method Method OnKeyEvent( event:KeyEvent ) Override Select event.Type Case EventType.KeyDown Select event.Key Case Key.F12 Fullscreen = Not Fullscreen Case Key.Escape App.Terminate() Case Key.F ShowFPS=Not ShowFPS End End End Method OnWindowEvent(event:WindowEvent) Override Select event.Type Case EventType.WindowMoved Case EventType.WindowResized App.RequestRender() Case EventType.WindowGainedFocus Self.IsSuspended = False Case EventType.WindowLostFocus Self.IsSuspended = True Default Super.OnWindowEvent(event) End End End Class

[/crayon]

[PakzParticipant]

I found that if you change the layout=”letterbox” line to something else then it works. I have not delved deep into Monkey2 to know what the problem might be.

edit:

btw – when I tried the fullscreen mode the first time my computer became very slow after ending the program. This for around 10 seconds. The mouse moved really slow and the music in the background played very weird. Never seen anything like this before on this gaming laptop.

[Matthew SmithParticipant]

@pakz
Thanks for checking! Hopefully Mark can determine the problem here.

Also haven’t seen any slow downs like that myself.

[Matthew SmithParticipant]

I’ve raised an issue for this:
https://github.com/blitz-research/monkey2/issues/24

[Mark SiblyKeymaster]

To use “letterbox” layout, you need to also provide an ‘OnMeasure:Vec2i() Override’ method, or mojo wont know what size you want the letterbox ‘content’ to be, ie: the size of the window and the size of the letterbox are 2 different things. Adding this fixes the problem here:

Monkey

Method OnMeasure:Vec2i() Override Return New Vec2i( 1024,768 ) End

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Method OnMeasure:Vec2i() Override Return New Vec2i( 1024,768 ) End

The default OnMeasure() returns (0,0) which is likely to cause problems! I may change this (or maybe add a check for silly letterbox sizes?) but the solution remains the same – OnMeasure should be implemented when using “letterbox” layout.

Note the Fullscreen property is @hidden as it’s still under development (sorry if I used it in a banana). There will definitely be *some* way to do this (I quite like the idea of a ‘Flags’ property so you can update any flag after window creation) so use it for now but it may be flaky. Actually, the fact that it’s working here means that it’s broken(!) as it’s ignoring the (0,0) letterbox size you requested!

[Matthew SmithParticipant]

Ok – thanks for taking a look Mark!

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