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Imgui crash in android player on touch — Gideros Forum
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    Imgui crash in android player on touch

    piepie Member
    in Plugins
    This is the output as soon as I touch the screen

    [1355] jni/../../Common/imgui_src/imgui.cpp: mouse_button >= 0 && mouse_button < ImGuiMouseButton_COUNT

    Should I do something I missed?

    Thank you
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    Comments

    • piepie Member
      I had no luck so far, I hope that someone else can try this project and confirm my experience.

      This is a very simple project that makes use only of the imgui demo window, and I get the same error message that I have in every other project I tried using imgui on android.

      They work in windows desktop player, but when I run them on android player they stop working as soon as I touch the screen; I even tried using a bluetooth mouse on the phone: as soon as I click the left button the player crashes
      [1355] jni/../../Common/imgui_src/imgui.cpp: mouse_button >= 0 && mouse_button < ImGuiMouseButton_COUNT
      To build the android player I exported the project as a player with imgui plugin and no assets as usual.

      thank you
      zip
      zip
      androidplayer_dummy.zip
      1M
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    • keszeghkeszegh Member
      edited November 2022
      i had the sameish issue, see
      https://forum.giderosmobile.com/discussion/8399/imgui-new-thread/p20

      Comment 67327

      my workaround is that i propagate the mouse/touch events manually to the imgui within ontouches begin/move/end/cancel events, and there i do something like this to change value 0 to 1 before sending to imgui:
      if event.touch.mouseButton==0 then event.touch.mouseButton=1 end	 
IO:setMouseDown(event.touch.mouseButton, true)
      (you need to disable automatic handling of mouse events to make this work, that is, you should initialize the gui like this:
      imgui = ImGui.new(nil, false, true, false) 
IO=getIO()
      see https://github.com/MultiPain/Gideros_ImGui/#constructor)

      Likes: pie, MoKaLux

      Longtitle Productions, creator of
      Fragmenter - animated loop machine and IKONOMIKON - the memory game
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    • keszeghkeszegh Member
      nevertheless it's a bug that probably @hgy29 and @rrraptor can correct.
      Longtitle Productions, creator of
      Fragmenter - animated loop machine and IKONOMIKON - the memory game
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    • piepie Member
      edited December 2022
      I found out that I was using gideros TOUCHES_BEGIN/END events, while I had to use ImGui events, and now it is almost working.

      -EDIT: partially answered my own question, removed the second question to keep forum cleaner. I cannot remove the not working attached example, therefore I will make a new post.

      zip
      zip
      imgui_test_touch_TTF.zip
      358K
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    • piepie Member
      The attached file is an almost working example for imgui android touch: buttons are selected on the first click/touch and need a second click/touch to act.
      @rraptor @keszegh do you know if I can change this behaviour and let them act as soon as they are pressed?
      zip
      zip
      Imgui_android_touch.zip
      3K
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    • keszeghkeszegh Member
      edited December 2022 Accepted Answer
      hi @pie, i don't have time to digest your code but i copy here more of my solution:
      stage:addEventListener(Event.TOUCHES_BEGIN, onTouch,self)
stage:addEventListener(Event.TOUCHES_MOVE, onTouch,self)  
stage:addEventListener(Event.TOUCHES_END, onTouch,self)
stage:addEventListener(Event.TOUCHES_CANCEL, onTouch,self)
stage:addEventListener(Event.MOUSE_HOVER, onTouch,self)
stage:addEventListener(Event.MOUSE_WHEEL, onTouch,self)
 
 
function onTouch(event)               
  local IO=gui.IO    
 
  if event.type=="mouseWheel" then      
    IO:setMouseWheel(event.wheel/300)
    IO:setMousePos(event.x,event.y)            
    return    
  end
 
  if event.type=="mouseHover" then      
    IO:setMousePos(event.x,event.y)        
    return    
  end
 
  local xGui=event.touch.x
  local yGui=event.touch.y
  IO:setMousePos(xGui,yGui)    
 
  guiHasMouse=IO:wantCaptureMouse()    
 
  if event.type=="touchesBegin" then           
	if event.touch.mouseButton==0 then event.touch.mouseButton=1 end	 --workaround
    IO:setMouseDown(event.touch.mouseButton, true)                       
  end
 
  if event.type=="touchesMove" then           
  end
 
 if event.type=="touchesEnd" then        
	  if event.touch.mouseButton==0 then event.touch.mouseButton=1 end     --workaround
    IO:setMouseDown(event.touch.mouseButton, false)           
    IO:setMouseDown(2, false)  --for safety, sometimes right-click got `stuck' 
  end        
 
  guiHasMouse=IO:wantCaptureMouse()  
  if guiHasMouse then return end
 end

      Likes: pie, MoKaLux

      Longtitle Productions, creator of
      Fragmenter - animated loop machine and IKONOMIKON - the memory game
      +1 -1 (+2 / -0 )Share on Facebook
    • piepie Member
      Thank you @keszegh this indeed works in a clean project, so my issue has probably to do with how I built my imgui based app until now :# It's faster to rewrite it than trying to discover what the issue was exactly.

      For the records my ui and IO instances were returned through a function from a local variable instanced in another lua file, but this approach didn't show any issue until now.
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    • keszeghkeszegh Member
      i'm glad it works.
      and also hope that this strange thing with event.touch.mouseButton returning 0 will be corrected.
      overall, imgui is really cool (along with gideros).
      Longtitle Productions, creator of
      Fragmenter - animated loop machine and IKONOMIKON - the memory game
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    • MoKaLuxMoKaLux Member
      keszegh said:

      i'm glad it works.
      and also hope that this strange thing with event.touch.mouseButton returning 0 will be corrected.
      overall, imgui is really cool (along with gideros).

      What do you want it to return instead of 0?
      I may have a look if I understand the issue, do you have gideros forum threads where you explain this?

      Likes: pie

      my growING GIDEROS github repositories: https://github.com/mokalux?tab=repositories
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    • keszeghkeszegh Member
      well, i think for a touch event 1 would be the correct value.
      Longtitle Productions, creator of
      Fragmenter - animated loop machine and IKONOMIKON - the memory game
      +1 -1Share on Facebook
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