Merge pull request #36 from JuliaImages/cs/subarray

add custom summary for Colorant SubArray

src/show.jl

@@ -46,6 +46,28 @@ end
 
 Base.summary{T<:FixedPoint,N,AA,F}(A::MappedArray{T,N,AA,F,typeof(reinterpret)}) = summary_build(A)
 
+# SubArray of Colorant
+
+_showindices(io, indices) = print(io, indices)
+if VERSION < v"0.6.0-dev.2068" # PR #19730
+    _showindices(io, ::Colon) = print(io, ':')
+else
+    _showindices(io, ::Base.Slice) = print(io, ':')
+end
+function ShowItLikeYouBuildIt.showarg{T<:Colorant,N}(io::IO, A::SubArray{T,N})
+    print(io, "view(")
+    showarg(io, parent(A))
+    print(io, ", ")
+    for (i, indices) in enumerate(A.indexes)
+        _showindices(io, indices)
+        i < length(A.indexes) && print(io, ", ")
+    end
+    print(io, ')')
+end
+
+Base.summary{T<:Colorant,N}(A::SubArray{T,N}) = summary_build(A)
+
+
 ## Specializations of other containers based on a color or fixed-point eltype
 # These may be going too far, but let's see how it works out
 function ShowItLikeYouBuildIt.showarg{T<:Union{FixedPoint,Colorant},N}(io::IO, A::Array{T,N})

test/show.jl

@@ -8,6 +8,8 @@ end
 
 @testset "show" begin
     rgb32 = rand(RGB{Float32}, 3, 5)
+    v = view(rgb32, 2:3, :)
+    @test summary(v) == "2×5 view(::Array{RGB{Float32},2}, 2:3, :) with element type ColorTypes.RGB{Float32}"
     a = ChannelView(rgb32)
     @test summary(a) == "3×3×5 ChannelView(::Array{RGB{Float32},2}) with element type Float32"
     num64 = rand(3,5)