PureBasic Forums - English

Posted: **Sat Oct 24, 2015 1:14 pm**

In Mac OS come no events from the timer or post event when the window is resized or in the menu is active.
Is it a system constraint or a bug.

On Windows or Linux, the event is not blocked.

Example

Code: Select all

;-TOP

Enumeration ;Window
  #Main
EndEnumeration

Enumeration ; Menu
  #Menu
EndEnumeration

Enumeration ; MenuItems
  #MenuExit
EndEnumeration
  
Enumeration ; Gadgets
  #List
EndEnumeration

Enumeration ; Statusbar
  #Status
EndEnumeration

Enumeration ; Timer
  #Timer
EndEnumeration

; Global Variable
Global exit

; ***************************************************************************************

; Functions
Procedure UpdateWindow()
  
  Protected x, y, dx, dy, menu, status
  
  menu = MenuHeight()
  If IsStatusBar(#Status)
    status = StatusBarHeight(#Status)
  Else
    status = 0
  EndIf
  x = 0
  y = 0
  dx = WindowWidth(#Main)
  dy = WindowHeight(#Main) - menu - status
  ResizeGadget(#List, x, y, dx, dy)
  
EndProcedure

; ***************************************************************************************

Procedure Logs(Text.s)
    
  Protected sTemp.s, c
  
    sTemp = FormatDate("%YYYY/%MM/%DD %HH.%II.%SS;", Date())
    sTemp + Text
    AddGadgetItem(#List, -1, sTemp)
    c = CountGadgetItems(#List)
    If c > 1000
      RemoveGadgetItem(#List, 0)
      c - 1
    EndIf
    c - 1
    SetGadgetState(#List, c)
    SetGadgetState(#List, -1)
  
EndProcedure


; ***************************************************************************************

Procedure EventTimerHandler()
  
  Static c
  
  c + 1
  Logs("Conter " + Str(c))
  
EndProcedure

; ***************************************************************************************

Procedure Main()
  
  Protected event, style, dx, dy
  
  style = #PB_Window_SystemMenu | #PB_Window_MinimizeGadget | #PB_Window_MaximizeGadget | #PB_Window_SizeGadget
  dx = 800
  dy = 600
  
  If OpenWindow(#Main, #PB_Ignore, #PB_Ignore, dx, dy, "Main", style)
    
    ; Menu
    CreateMenu(#Menu, WindowID(#Main))
    MenuTitle("&File")
    MenuItem(#MenuExit, "Ex&it")
    
    ; Gadgets
    ListViewGadget(#List, 0, 0, dx, dy)
    
    ; Statusbar
    CreateStatusBar(#Status, WindowID(#Main))
    AddStatusBarField(#PB_Ignore)
    
    ; For Mac
    CompilerIf #PB_Compiler_OS = #PB_OS_MacOS
      ; Enable Fullscreen
      Protected NewCollectionBehaviour
      NewCollectionBehaviour = CocoaMessage(0, WindowID(#Main), "collectionBehavior") | $80
      CocoaMessage(0, WindowID(#Main), "setCollectionBehavior:", NewCollectionBehaviour)
      ; Mac default menuÂ´s
      If Not IsMenu(#Menu)
        CreateMenu(#Menu, WindowID(#Main))
      EndIf
      MenuItem(#PB_Menu_About, "")
      MenuItem(#PB_Menu_Preferences, "")
    CompilerEndIf
    
    UpdateWindow()
    
    AddWindowTimer(#Main, #Timer, 1000)
    
    BindEvent(#PB_Event_SizeWindow, @UpdateWindow())
    BindEvent(#PB_Event_Timer, @EventTimerHandler())
    
    ; Main Loop
    Repeat
      event = WaitWindowEvent()
      Select event
        Case #PB_Event_Menu
          Select EventMenu()
            CompilerIf #PB_Compiler_OS = #PB_OS_MacOS   
              Case #PB_Menu_About
                MessageRequester("Info", "Testing of Modul Logging")
                
              Case #PB_Menu_Preferences
                
              Case #PB_Menu_Quit
                exit = #True
                
            CompilerEndIf
              
            Case #MenuExit
              exit = #True
              
          EndSelect
          
        Case #PB_Event_CloseWindow
          Select EventWindow()
            Case #Main
              exit = #True
              
          EndSelect
          
      EndSelect
      
    Until exit
    
  EndIf
  
EndProcedure : Main()

End

Posted: **Sat Oct 24, 2015 4:43 pm**

mk-soft wrote:In Mac OS come no events from the timer or post event when the window is resized or in the menu is active.
Is it a system constraint or a bug.

It depends on what runloop mode(s) are used to monitor events.
kCFRunLoopDefaultMode does not detect events while resizing, kCFRunLoopCommonModes usually does as far as I can tell.
If not, NSEventTrackingRunLoopMode can be added to the common modes.

Here's an OSX example of a timer that keeps updating while resizing

Code: Select all

ImportC ""
  CFAbsoluteTimeGetCurrent .d()
  CFRunLoopAddCommonMode (rl, mode)
  CFRunLoopAddTimer (rl, timer, mode)
  CFRunLoopGetCurrent ()
  CFRunLoopGetMain ()
  CFRunLoopTimerGetNextFireDate .d(timer)
  CFRunLoopRemoveTimer (rl, timer, mode)
  CFRunLoopTimerCreate (allocator, fireDate.d, interval.d, flags, order, callout, *context)
  dlsym (handle, symbol.p-utf8)
EndImport

Global *NSEventTrackingRunLoopMode.Integer = dlsym(-2, "NSEventTrackingRunLoopMode")
Global *NSModalPanelRunLoopMode.Integer = dlsym(-2, "NSModalPanelRunLoopMode")
Global *kCFRunLoopCommonModes.Integer = dlsym(-2, "kCFRunLoopCommonModes")


; Timer callback

ProcedureC MyTimerCallback(timer, *info)
  AddGadgetItem(0, 0, StrD(CFRunLoopTimerGetNextFireDate(timer), 1))
EndProcedure


; Window resize callback

Procedure Window0_Resize()
  ResizeGadget(0, 10, 10, WindowWidth(0) - 20, WindowHeight(0) - 20)
EndProcedure


; Main

OpenWindow(0, 0, 0, 400, 300, "Runloop Timer Example", #PB_Window_SystemMenu | #PB_Window_ScreenCentered | #PB_Window_SizeGadget)

ListIconGadget(0, 10, 10, 380, 280, "Timer", 140)
BindEvent(#PB_Event_SizeWindow, @Window0_Resize())

runLoop = CFRunLoopGetCurrent()
CFRunLoopAddCommonMode(runLoop, *NSEventTrackingRunLoopMode\i)

myTimer = CFRunLoopTimerCreate(#Null, CFAbsoluteTimeGetCurrent(), 0.1, 0, 0, @MyTimerCallback(), 0) 
CFRunLoopAddTimer(runLoop, myTimer, *kCFRunLoopCommonModes\i)

Repeat
  Event = WaitWindowEvent()
Until Event = #PB_Event_CloseWindow

Posted: **Sat Oct 24, 2015 11:00 pm**

Thank you,
for timer events a good alternative.

For PostEvent Fed must have a look, because they are handled internally.

Posted: **Sun Oct 25, 2015 2:04 pm**

mk-soft wrote:For PostEvent Fred must have a look, because they are handled internally.

I think you are right. Fred knows how the PB event handler is coded.
I don't know if PostEvent really posts an event into the event stream of the OS or is something only the PB functions can pick up.

Posted: **Tue Nov 05, 2019 8:16 am**

Is Fred aware of this?

PostEvent and timer won't work when menu is active (and at least 1 other situation too). Can break logic for someone who uses PB timers and thinks they always 'tick'. Any workaround for postevent?

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