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DisplayArray provides arrays that index character in text width unit. And therefore maintains an immutable display size for terminal emulators.

The package can be installed with the Julia package manager. From the Julia REPL, type ] to enter the Pkg REPL mode and run:

pkg> add DisplayStructure

1. Using package

julia> using DisplayStructure; const DS = DisplayStructure;

2. Declare an area

julia> area = DS.DisplayArray(DS.Rectangle(20, 100))
DisplayArray(size=(20, 100), background char=Char(32))

3. Declare a label

julia> str = "會動的字串"; width = textwidth(str); label = DS.DisplayRow(width)
DisplayRow(size=10, background char=Char(32))

julia> label[1:end] = str
"會動的字串"

4. Render area and label

julia> DS.render(area, pos=(1, 1)); DS.render(label, pos=(5, 5))

Hint: The result may be different from the picture showing bellow. One may need to integrate Terming.jl to completely dominate terminal control.

with DisplayStack, one can easily construct a hierarchical display structure.

1. Using package

julia> using DisplayStructure; const DS = DisplayStructure;

2. Define a function that returns a DisplayStack

julia> function gen_form()
    display_stack =  DS.DisplayStack()
    push!(display_stack, :form => DS.Panel("Title", [20, 100], [1, 1]))
    push!(display_stack, :str => DS.Label("會動的字串", [5, 5]))

    return display_stack
end;

julia> form = gen_form();

3. Render it!!

julia> DS.render(form)

The example demonstrates a minimum viable product that shows a border and a string. Integrate with keyboard key reading feature (implemented under Terming.jl), the movable string can be controlled by pressing w, s, a and d, press ESC to quit.

It is recommended that one use Crayons.jl to gain more decorations. A example shows how to integrate with Crayons.