DPI() - writing friendlier DPI-Aware AutoHotkey GUIs

[lexikos]

@ahk7
I think this is ingenious, but I'm confused about how you use it. If I'm reading your posts correctly, you use DPI() to increase the scaling that's already done by +DPIScale. Does it scale the numbers by the same amount again that +DPIScale would already scale it? So if the scale is 150%, you end up at %225?

If 150% is too small for you in AutoHotkey GUIs, wouldn't everything else be too small as well? Why have the scale set so low?

If you're using the function, I think it would be more sensible to apply -DPIScale and increase the scaling factor of DPI(), which I presume is done by supplying a second parameter. That way the coordinates returned by Gui commands and variables will be actual coordinates, instead of modified coordinates that are half-way between reality and the original coordinates since only one scaling factor is reversed (+DPIScale, not DPI()).

It would probably be trivial to extend +DPIScale to accept a value, overriding the system DPI...

[ahk7]

I think this is ingenious, but I'm confused about how you use it. If I'm reading your posts correctly, you use DPI() to increase the scaling that's already done by +DPIScale.

Most other programs I work with deal with text and they have the standard zoom in/out options for the text and decent buttonbars - of course some dialogs will remain "small" but I don't have to use these that often (the dialogs) so it is acceptable.

Does it scale the numbers by the same amount again that +DPIScale would already scale it? So if the scale is 150%, you end up at %225?

Yes, that should be the case. (w100 -> dpi() -> w150 -> +DPIScale -> w225)

If 150% is too small for you in AutoHotkey GUIs, wouldn't everything else be too small as well? Why have the scale set so low?

It is the standard / recommended setting here and messing with other computers (apart from my own) by changing it "all the time" would be(come) tedious.

If you're using the function, I think it would be more sensible to apply -DPIScale ...

Maybe, I don't think it matters that much and I haven't run into any weird results. You can already use dpi() and set your preferred DPI so you can choose how you'd like to use it.

Here are various GUIs with -/+DPIScale and various DPI("",dpisetting) including making it smaller (72dpi). Result as image below. (screenshots taken at 150%/144dpi). Gui 1 & 3 are standard AHK GUIs with -/+DPIScale the rest variations with DPI()

Code: Select all

Gui, 1:-DPIScale
Gui, 1:Font       , s10
Gui, 1:Add, Text  , x5 y5                  , Hello
Gui, 1:Add, Edit  , xp yp+20 w200 h100 vVar, -DPIScale`nA_ScreenDPI: %A_ScreenDPI%
Gui, 1:Add, Button, xp yp+110 w100         , OK
Gui, 1:Add, Button, xp+110 yp w50          , Cancel
Gui, 1:Show       , w220 h200              , 1

Gui, 2:-DPIScale
Gui, 2:Font       , % dpi("s10                    ")
Gui, 2:Add, Text  , % dpi("x5 y5                  "), Hello
Gui, 2:Add, Edit  , % dpi("xp yp+20 w200 h100 vVar"), DPI()`n-DPIScale`nA_ScreenDPI: %A_ScreenDPI% (150`%)
Gui, 2:Add, Button, % dpi("xp yp+110 w100         "), OK
Gui, 2:Add, Button, % dpi("xp+110 yp w50          "), Cancel
Gui, 2:Show       , % dpi("w220 h200              "), 2

Gui, 3:+DPIScale
Gui, 3:Font       , s10
Gui, 3:Add, Text  , x5 y5                  , Hello
Gui, 3:Add, Edit  , xp yp+20 w200 h100 vVar, +DPIScale`nA_ScreenDPI: %A_ScreenDPI% (150`%)
Gui, 3:Add, Button, xp yp+110 w100         , OK
Gui, 3:Add, Button, xp+110 yp w50          , Cancel
Gui, 3:Show       , w220 h200              , 3

Gui, 4:+DPIScale
Gui, 4:Font       , % dpi("s10                    ")
Gui, 4:Add, Text  , % dpi("x5 y5                  "), Hello
Gui, 4:Add, Edit  , % dpi("xp yp+20 w200 h100 vVar"), DPI()`n+DPIScale`nA_ScreenDPI: %A_ScreenDPI% (150`%)
Gui, 4:Add, Button, % dpi("xp yp+110 w100         "), OK
Gui, 4:Add, Button, % dpi("xp+110 yp w50          "), Cancel
Gui, 4:Show       , % dpi("w220 h200              "), 4

Gui, 5:-DPIScale
Gui, 5:Font       , % dpi("s10                    ",144)
Gui, 5:Add, Text  , % dpi("x5 y5                  ",144), Hello
Gui, 5:Add, Edit  , % dpi("xp yp+20 w200 h100 vVar",144), DPI(,144)`n-DPIScale`nA_ScreenDPI: %A_ScreenDPI% (150`%)
Gui, 5:Add, Button, % dpi("xp yp+110 w100         ",144), OK
Gui, 5:Add, Button, % dpi("xp+110 yp w50          ",144), Cancel
Gui, 5:Show       , % dpi("w220 h200              ",144), 5 (same as 2)

Gui, 6:-DPIScale
Gui, 6:Font       , % dpi("s10                    ",192)
Gui, 6:Add, Text  , % dpi("x5 y5                  ",192), Hello
Gui, 6:Add, Edit  , % dpi("xp yp+20 w200 h100 vVar",192), DPI(,192)`n-DPIScale`nA_ScreenDPI: %A_ScreenDPI% (200`%)
Gui, 6:Add, Button, % dpi("xp yp+110 w100         ",192), OK
Gui, 6:Add, Button, % dpi("xp+110 yp w50          ",192), Cancel
Gui, 6:Show       , % dpi("w220 h200              ",192), 6

Gui, 7:-DPIScale
Gui, 7:Font       , % dpi("s10                    ",216)
Gui, 7:Add, Text  , % dpi("x5 y5                  ",216), Hello
Gui, 7:Add, Edit  , % dpi("xp yp+20 w200 h100 vVar",216), DPI(,216)`n-DPIScale`nA_ScreenDPI: %A_ScreenDPI% (225`%)
Gui, 7:Add, Button, % dpi("xp yp+110 w100         ",216), OK
Gui, 7:Add, Button, % dpi("xp+110 yp w50          ",216), Cancel
Gui, 7:Show       , % dpi("w220 h200              ",216), 7

Gui, 8:+DPIScale
Gui, 8:Font       , % dpi("s10                    ",72)
Gui, 8:Add, Text  , % dpi("x5 y5                  ",72), Hello
Gui, 8:Add, Edit  , % dpi("xp yp+20 w200 h100 vVar",72), DPI(,72)`n+DPIScale`nA_ScreenDPI: %A_ScreenDPI% (75`%)
Gui, 8:Add, Button, % dpi("xp yp+110 w100         ",72), OK
Gui, 8:Add, Button, % dpi("xp+110 yp w50          ",72), Cancel
Gui, 8:Show       , % dpi("w220 h200              ",72), 8

Gui, 9:-DPIScale
Gui, 9:Font       , % dpi("s10                    ",72)
Gui, 9:Add, Text  , % dpi("x5 y5                  ",72), Hello
Gui, 9:Add, Edit  , % dpi("xp yp+20 w200 h100 vVar",72), DPI(,72)`n+DPIScale`nA_ScreenDPI: %A_ScreenDPI% (75`%)
Gui, 9:Add, Button, % dpi("xp yp+110 w100         ",72), OK
Gui, 9:Add, Button, % dpi("xp+110 yp w50          ",72), Cancel
Gui, 9:Show       , % dpi("w220 h200              ",72), 9

Return

Esc::
GuiClose:
ExitApp

And a "fun" little script showing how you could cycle through various GUIs sizes with -/+DPIScale side by side

Code: Select all

sizes:=[72,96,120,144,192,216]
count:=1
dpiset:=sizes[count]
Gosub, DrawGui

^k::
count++
if (count > sizes.length())
	count:=1
dpiset:=sizes[count]
Gosub, DrawGui
Return

Esc::ExitApp

DrawGui:
Gui, 10:Destroy
Gui, 10:-DPIScale
Gui, 10:Font       , % dpi("s10                    ",dpiset)
Gui, 10:Add, Text  , % dpi("x5 y5                  ",dpiset), Hello
Gui, 10:Add, Edit  , % dpi("xp yp+20 w200 h100 vVar",dpiset), DPI(,%dpiset%)`n-DPIScale`nA_ScreenDPI: %A_ScreenDPI%
Gui, 10:Add, Button, % dpi("xp yp+110 w100         ",dpiset), OK
Gui, 10:Add, Button, % dpi("xp+110 yp w50          ",dpiset), Cancel
Gui, 10:Show       , % dpi("w220 h200              ",dpiset) " x100", DPI() test

Gui, 11:Destroy
Gui, 11:+DPIScale
Gui, 11:Font       , % dpi("s10                    ",dpiset)
Gui, 11:Add, Text  , % dpi("x5 y5                  ",dpiset), Hello
Gui, 11:Add, Edit  , % dpi("xp yp+20 w200 h100 vVar",dpiset), DPI(,%dpiset%)`n+DPIScale`nA_ScreenDPI: %A_ScreenDPI%
Gui, 11:Add, Button, % dpi("xp yp+110 w100         ",dpiset), OK
Gui, 11:Add, Button, % dpi("xp+110 yp w50          ",dpiset), Cancel
Gui, 11:Show       , % dpi("w220 h200              ",dpiset) " x700", DPI() test

Return

Script 1 result: