Label in the bottom right corner showing the current view (#314)

Label shows the current view (only when zoomed in). This is selectable, allowing users to cut and paste into an editor (or the REPL).

Also includes a microoptimization in the hover label setter and a minor fix to the README.

Finally, require Julia 1.10 and bump version.

.github/workflows/CI.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macOS-latest]
-        version: ['1.6', '1']
+        version: ['1']
         arch: [x64, x86]
         include:
           - os: ubuntu-latest
@@ -27,7 +27,7 @@ jobs:
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: julia-actions/cache@v1
+      - uses: julia-actions/cache@v2
         env:
           cache-name: cache-artifacts
         with:

Project.toml

@@ -1,7 +1,7 @@
 name = "ImageView"
 uuid = "86fae568-95e7-573e-a6b2-d8a6b900c9ef"
 author = ["Tim Holy <tim.holy@gmail.com"]
-version = "0.12.6"
+version = "0.13.0"
 
 [deps]
 AxisArrays = "39de3d68-74b9-583c-8d2d-e117c070f3a9"
@@ -32,7 +32,8 @@ MultiChannelColors = "0.1.1"
 PrecompileTools = "1"
 RoundingIntegers = "0.2, 1"
 StatsBase = "0.28, 0.29, 0.30, 0.31, 0.32, 0.33, 0.34"
-julia = "1.6"
+julia = "1.10"
+TestImages = "1.9"
 
 [extras]
 ImageCore = "a09fc81d-aa75-5fe9-8630-4744c3626534"

README.md

@@ -384,6 +384,6 @@ manually close it with `CTRL + C`.
 If you are opening more than one window you will need to create more
 than one `Condition` object, if you wish to wait until the last one is
 closed. See 
-(here)[https://juliagtk.github.io/Gtk4.jl/dev/howto/nonreplusage/] for
+[here](https://juliagtk.github.io/Gtk4.jl/dev/howto/nonreplusage/) for
 more information.
 

src/ImageView.jl

@@ -228,6 +228,9 @@ Compat.@constprop :none function imshow(@nospecialize(img::AbstractArray), clim,
     guidict["hoverinfo"] = on(guidict["canvas"].mouse.motion) do btn
         hoverinfo(guidict["status"], btn, img, sd)
     end
+    guidict["zoomregion_info"]=on(zr; update=true) do z
+        viewinfo(guidict["viewlabel"], z, sd)
+    end
 
     roidict = imshow(guidict["frame"], guidict["canvas"], img,
                      wrap_signal(clim), zr, sd, anns)
@@ -379,12 +382,16 @@ Compat.@constprop :none function imshow_gui(canvassize::Tuple{Int,Int},
         g, frames, canvases = canvasgrid(gridsize, aspect)
     end
     push!(vbox, g)
+    cbox = GtkCenterBox()
+    push!(vbox, cbox)
     status = GtkLabel("")
-    set_gtk_property!(status, :halign, Gtk4.Align_START)
-    push!(vbox, status)
+    cbox[:start] = status
+    viewlabel = GtkLabel(""; selectable = true)
+    Gtk4.ellipsize(viewlabel, Gtk4.Pango.EllipsizeMode_MIDDLE)
+    cbox[:end] = viewlabel
 
     guidict = Dict("window"=>win, "vbox"=>vbox, "frame"=>frames, "status"=>status,
-                   "canvas"=>canvases)
+                   "canvas"=>canvases, "viewlabel"=>viewlabel)
 
     # Add the player controls
     if !isempty(slicedata)
@@ -526,10 +533,22 @@ function hoverinfo(lbl, btn, img, sd::SliceData{transpose}) where transpose
     if checkbounds(Bool, img, axes...)
         print(io, '[', y, ',', x, "] ")
         show(IOContext(io, :compact=>true), img[axes...])
-        set_gtk_property!(lbl, :label, String(take!(io)))
+        Gtk4.label(lbl, String(take!(io)))
+    else
+        Gtk4.label(lbl, "")
+    end
+end
+
+function viewinfo(lbl, zr, sd::SliceData{transpose}) where transpose
+    io = IOBuffer()
+    if zr.currentview == zr.fullview
+        print(io, "")
     else
-        set_gtk_property!(lbl, :label, "")
+        print(io, "view: ")
+        x, y = transpose ? (zr.currentview.x, zr.currentview.y) : (zr.currentview.y, zr.currentview.x)
+        print(io, '[', x.left, ':', x.right, ',', y.left, ':', y.right, ']')
     end
+    Gtk4.label(lbl, String(take!(io)))
 end
 
 function valuespan(img::AbstractMatrix)