123 lines
3.6 KiB
Elixir
123 lines
3.6 KiB
Elixir
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---------------------------------------------------------------------
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--# Progress bar
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--
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-- Normally the progress percentage would be set by some code
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-- during a long process, such as reading a file, processing data, etc.
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-- perhaps being called as a separate 'watchdog' task using Eu tasks.
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-- For demo purposes we take the easy way out and provide up and down
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-- buttons, just so you can see how it works.
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---------------------------------------------------------------------
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include GtkEngine.e
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include std/math.e -- for ensure_in_range
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enum STEP=0, PULSE
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boolean mode = STEP
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constant win = create(GtkWindow,"title=`Progress Bar`,border=10,position=1,$destroy=Quit")
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constant panel = add(win,create(GtkBox,"orientation=VERTICAL,spacing=10"))
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constant pb = pack(panel,create(GtkProgressBar,"show_text=TRUE"))
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constant bot = add(panel,create(GtkBox,"orientation=HORIZONTAL,spacing=10"))
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constant leftbtnbox = create(GtkButtonBox,"orientation=VERTICAL,layout=3")
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constant rightbtnbox = create(GtkButtonBox,"orientation=VERTICAL")
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constant dnbtn = create(GtkButton,"back#_Back",_("Update"))
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set(dnbtn,"tooltip text= Click to subtract 10%,sensitive=FALSE")
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constant upbtn = create(GtkButton,"forward#_Forward",_("Update"))
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set(upbtn,"tooltip text=Click to add 10%,sensitive=TRUE")
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add(leftbtnbox,{dnbtn,upbtn})
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constant perbtn = create(GtkRadioButton,0,"_Percentage",_("SelectMode"),0)
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set(perbtn,"tooltip text=Select this button to show % of progress")
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constant actbtn = create(GtkRadioButton,perbtn,"_Activity",_("SelectMode"),1)
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set(actbtn,"tooltip text=Select this button to show activity mode")
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constant showtxt = create(GtkCheckButton,"Show _Txt",_("ShowText"))
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set(showtxt,"active",TRUE)
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add(rightbtnbox,{actbtn,perbtn,showtxt})
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pack(bot,{leftbtnbox,rightbtnbox})
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-- Important: you must always call timeout with a call_back address
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constant tick = create(GTimeout,100,_("Pulse"))
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show_all(win)
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main()
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-------------------------------------------------------------
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function Update(atom ctl)
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-------------------------------------------------------------
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-- get current setting;
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atom percentage = get(pb,"fraction")
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switch ctl do -- respond to buttons by adjusting percentage
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case upbtn then percentage += .1
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case dnbtn then percentage -= .1
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end switch
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-- limit percentage to range of 0..100%;
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percentage = ensure_in_range(percentage,{0,1})
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-- enable/disable buttons as needed;
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if percentage < .01 then -- can't go down any lower, so
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set(dnbtn,"sensitive",FALSE) -- disable down button
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set(upbtn,"sensitive",TRUE) -- enable up button
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elsif percentage > .99 then -- can't go up any higher
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set(upbtn,"sensitive",FALSE)
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set(dnbtn,"sensitive",TRUE)
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else -- somewhere in middle of range, can go either way
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set(upbtn,"sensitive",TRUE)
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set(dnbtn,"sensitive",TRUE)
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end if
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-- update displayed values. progress text can be anything, not just %
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set(pb,"text",sprintf("%2.0f%%",percentage*100))
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set(pb,"fraction",percentage)
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return 1
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end function
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--------------------------------------------------
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function SelectMode(atom ctl, boolean x)
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--------------------------------------------------
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if get(ctl,"active") then
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mode = x
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if mode = PULSE then
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set(upbtn,"sensitive",FALSE)
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set(dnbtn,"sensitive",FALSE)
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end if
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end if
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return 1
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end function
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-------------------------
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function Pulse()
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-------------------------
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if mode = 1 then
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set(pb,"pulse")
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set(pb,"text","Working...")
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else
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Update(pb)
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end if
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return 1
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end function
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------------------------------------
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function ShowText(atom ctl)
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------------------------------------
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set(pb,"show text",get(ctl,"active"))
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return 1
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end function
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