fix tests

GLMakie/src/screen.jl

@@ -361,7 +361,9 @@ function apply_config!(screen::Screen, config::ScreenConfig; start_renderloop::B
     else
         stop_renderloop!(screen)
     end
-
+    if !isnothing(screen.root_scene)
+        resize!(screen, size(screen.root_scene)...)
+    end
     set_screen_visibility!(screen, config.visible)
     return screen
 end

GLMakie/test/unit_tests.jl

@@ -319,7 +319,7 @@ end
 
         # save at current size
         @test screen.px_per_unit[] == 1
-        save(file, fig)
+        save(file, fig; px_per_unit=1)
         img = load(file)
         @test size(img) == (W, H)
         # save with a different resolution
@@ -328,6 +328,10 @@ end
         @test size(img) == (2W, 2H)
         # writing to file should not effect the visible figure
         @test_broken screen.px_per_unit[] == 1
+        # Make sure switching back resizes the screen correctly!
+        save(file, fig; px_per_unit=1)
+        img = load(file)
+        @test size(img) == (W, H)
     end
 
     # make sure there isn't a race between changing the scale factor and window_area updater

src/display.jl

@@ -456,20 +456,20 @@ function colorbuffer(fig::FigureLike, format::ImageStorageFormat = JuliaNative;
 end
 
 # Fallback for any backend that will just use colorbuffer to write out an image
-function backend_show(screen::MakieScreen, io::IO, m::MIME"image/png", scene::Scene)
+function backend_show(screen::MakieScreen, io::IO, ::MIME"image/png", scene::Scene)
     img = colorbuffer(screen)
     FileIO.save(FileIO.Stream{FileIO.format"PNG"}(Makie.raw_io(io)), img)
     return
 end
 
-function backend_show(screen::MakieScreen, io::IO, m::MIME"image/jpeg", scene::Scene)
-    img = colorbuffer(scene)
+function backend_show(screen::MakieScreen, io::IO, ::MIME"image/jpeg", scene::Scene)
+    img = colorbuffer(screen)
     FileIO.save(FileIO.Stream{FileIO.format"JPEG"}(Makie.raw_io(io)), img)
     return
 end
 
 function backend_show(screen::MakieScreen, io::IO, ::Union{WEB_MIMES...}, scene::Scene)
-    w, h = widths(scene.px_area[])
+    w, h = size(scene)
     png_io = IOBuffer()
     backend_show(screen, png_io, MIME"image/png"(), scene)
     b64 = Base64.base64encode(String(take!(png_io)))