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eat mouse wheel events destimed for map zoom

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stop propagation, prevent default
This commit is contained in:
Daniel Barlow 2024-11-15 22:08:12 +00:00
parent 5b9697e283
commit 6e092a83ae
1 changed files with 14 additions and 7 deletions
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21
frontend/src/Main.elm
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@ -404,12 +404,19 @@ canvas centre zoom width height track =
portalWidth = 600 portalWidth = 600
portalHeight = 600 portalHeight = 600
wheelDecoder : D.Decoder Msg withSwallowing m =
wheelDecoder = { message = m
D.map3 MapZoomWheel , stopPropagation = True
(D.field "deltaX" D.float) , preventDefault = True
(D.field "deltaY" D.float) }
(D.field "deltaMode" D.int)
mapWheelDecoder =
D.map withSwallowing
(D.map3 MapZoomWheel
(D.field "deltaX" D.float)
(D.field "deltaY" D.float)
(D.field "deltaMode" D.int))
viewDiv : Model -> Html Msg viewDiv : Model -> Html Msg
viewDiv model = viewDiv model =
@ -419,7 +426,7 @@ viewDiv model =
, style "column-gap" "15px" , style "column-gap" "15px"
] ]
[ div [ style "display" "flex" [ div [ style "display" "flex"
, on "wheel" wheelDecoder , Html.Events.custom "wheel" mapWheelDecoder
, style "flex-direction" "column"] , style "flex-direction" "column"]
[ div [ style "width" (px portalWidth) [ div [ style "width" (px portalWidth)
, style "height" (px portalHeight) , style "height" (px portalHeight)