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flat assembler > IDE Development > FASMW scrolling through time

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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 6253
Location: Kraków, Poland
FASMW scrolling through time
Inspired by today's xkcd I tried to make a quick patch to fedit control used by fasmw, which would allow to move through undo/redo space with the mouse wheel:

Code:
wm_mousewheel:
        lea     ebx,[kbstate]
        invoke  GetKeyboardState,ebx
        test    [kbstate+VK_MENU],80h
        jnz     time_scroll
        ; ...
    time_scroll:
        test    [editor_mode],FEMODE_READONLY
        jnz     ignore
        test    [editor_mode],FEMODE_NOUNDO
        jnz     enable_undo
      move_through_time:
        cmp     word [wparam+2],0
        jl      forward_in_time
        sub     word [wparam+2],120
        jc      time_scroll_done
        mov     eax,[undo_data]
        test    eax,eax
        jz      time_scroll_done
        call    undo_changes
        jmp     move_through_time
      forward_in_time:
        add     word [wparam+2],120
        jc      time_scroll_done
        mov     eax,[redo_data]
        test    eax,eax
        jz      time_scroll_done
        call    redo_changes
        jmp     move_through_time
      time_scroll_done:
        call    create_caret
        mov     [last_operation],0
        jmp     text_changed

It allows to "scroll through time" when mouse wheel is used while holding down ALT key.

After playing a bit with this trick I'm starting to think that this could in fact be treated seriously.


Description: Experimental FASMW with ALT+wheel allowing to "scroll through time"
Download
Filename: fasmw.zip
Filesize: 88.33 KB
Downloaded: 29 Time(s)

Post 03 Mar 2017, 10:49
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zhak



Joined: 12 Apr 2005
Posts: 453
Location: Belarus
This is a very cool idea!
Post 03 Mar 2017, 11:25
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AsmGuru62



Joined: 28 Jan 2004
Posts: 1381
Location: Toronto, Canada
Indeed! Nice feature.
Post 03 Mar 2017, 21:27
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 6253
Location: Kraków, Poland
After fixing a minor bug I have added it to the official release. To get it working you need to enable the "Time scrolling" from the "Options" menu and then hold either Ctrl+Alt or the right Alt while scrolling - I wanted to make sure that it would not get activated by accident.
Post 04 Mar 2017, 13:44
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