Relax align typing for Blocks (#2108)

* relax alignment types to include numbers

* add test

* actually test

* add news

NEWS.md

@@ -1,5 +1,9 @@
 # News
 
+## master
+
+- Fixed regression where `Block` alignments could not be specified as numbers anymore [#2108](https://github.com/JuliaPlots/Makie.jl/pull/2108).
+
 ## v0.17.7
 
 - Improved `Menu` performance, now it should me much harder to reach the boundary of 255 scenes in GLMakie. `Menu` also takes a `default` keyword argument now and can be scrolled if there is too little space available.

src/makielayout/blocks.jl

@@ -332,8 +332,8 @@ function _block(T::Type{<:Block}, fig_or_scene::Union{Figure, Scene},
     layout_height = Observable{Any}(nothing)
     layout_tellwidth = Observable(true)
     layout_tellheight = Observable(true)
-    layout_halign = Observable(:center)
-    layout_valign = Observable(:center)
+    layout_halign = Observable{Union{Symbol, Float64}}(:center)
+    layout_valign = Observable{Union{Symbol, Float64}}(:center)
     layout_alignmode = Observable{Any}(Inside())
 
     lobservables = LayoutObservables(

test/makielayout.jl

@@ -175,3 +175,13 @@ end
     ax = Axis(f[1,1], xticks = 20:10:80)
     scatter!(ax, 30:10:100, rand(Float64, 8), color = :red)
 end
+
+# issues 1958 and 2006
+@testset "axislegend number align" begin
+    f = Figure()
+    ax = Axis(f[1,1], xticks = 20:10:80)
+    lines!(ax, 1:10, label = "A line")
+    leg = axislegend(ax, position = (0.4, 0.8))
+    @test leg.halign[] == 0.4
+    @test leg.valign[] == 0.8
+end