112 lines
2.8 KiB
Lua
112 lines
2.8 KiB
Lua
-- simple calculator on LUA for KolibriOS
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--init global variables
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disp=0 --display
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stack=0 --stack
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will=0 --operation
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function drawwin()
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--here we draw window
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paintstart()
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--begin redraw
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window(10,10,153,180,65069280)
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--define window
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textout(3,13,0,"LuaCalc")
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--print title
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textout(6, 30, 0, disp)
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--and display
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--then we need make buttons and print labels of buttons
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makebutton(6,60,20,20,17,13619151)
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textout(9,63,0,"7")
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makebutton(6,90,20,20,14,13619151)
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textout(9,93,0,"4")
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makebutton(6,120,20,20,11,13619151)
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textout(9,123,0,"1")
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makebutton(6,150,50,20,10,13619151)
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textout(9,153,0,"0")
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makebutton(36,60,20,20,18,13619151)
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textout(39,63,0,"8")
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makebutton(36,90,20,20,15,13619151)
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textout(39,93,0,"5")
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makebutton(36,120,20,20,12,13619151)
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textout(39,123,0,"2")
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makebutton(66,60,20,20,19,13619151)
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textout(69,63,0,"9")
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makebutton(66,90,20,20,16,13619151)
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textout(69,93,0,"6")
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makebutton(66,120,20,20,13,13619151)
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textout(69,123,0,"3")
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makebutton(96,60,20,20,20,13619151)
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textout(99,63,0,"*")
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makebutton(96,90,20,20,21,13619151)
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textout(99,93,0,"/")
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makebutton(96,120,20,20,22,13619151)
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textout(99,123,0,"-")
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makebutton(96,150,20,20,23,13619151)
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textout(99,153,0,"+")
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makebutton(126,60,20,20,30,13619151)
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textout(129,63,0,"C")
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makebutton(126,90,20,20,31,13619151)
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textout(129,93,0,"CE")
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makebutton(126,120,20,50,32,13619151)
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textout(129,123,0,"=")
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paintend()
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--and finish redraw
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end
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--main loop
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while 1==1 do --loop until exit
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event=waitevent() --check the event
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if event==1 then drawwin() end --redraw needed
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if event==2 then key=getkey() end --get keyboard scancode
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if event==3 then button=getbutton() --button pressed
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if button==1 then sysexit() end --close button
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if button==10 then disp=disp*10 end --numerical buttons - 0
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if button==11 then disp=disp*10+1 end --1
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if button==12 then disp=disp*10+2 end --2
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if button==13 then disp=disp*10+3 end --3
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if button==14 then disp=disp*10+4 end
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if button==15 then disp=disp*10+5 end
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if button==16 then disp=disp*10+6 end
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if button==17 then disp=disp*10+7 end
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if button==18 then disp=disp*10+8 end
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if button==19 then disp=disp*10+9 end --and 9
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if button==30 then disp=0
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stack=0 end -- C button - clear disp and memory
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if button==31 then disp=0 end -- CE button - clear disp
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if button==20 then will=1
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stack=disp
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disp=0
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end -- next is multiple
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if button==21 then will=2
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stack=disp
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disp=0
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end --next is divison
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if button==22 then will=3
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stack=disp
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disp=0
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end -- next is substraction
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if button==23 then will=4
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stack=disp
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disp=0
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end -- next is addition
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if button==32 then --evalute
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if will==1 then disp=stack*disp end
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if will==2 then disp=stack/disp end
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if will==3 then disp=stack-disp end
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if will==4 then disp=stack+disp end
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end
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drawwin() --redraw... we need it after pressing buttons
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end
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end
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