sokoban.love/0071-duplicate_pane_button

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duplicate_pane_button = function(x)
local w = App.width('dup')+10
button(Global_state, 'duplicate', {x=x, y=Menu_top+5, w=w, h=Line_height, bg={r=0.6, g=0.8, b=0.6},
icon = function(p)
App.color(Normal_color)
love.graphics.rectangle('line', p.x,p.y, p.w,p.h, 2,2)
love.graphics.print('dup', p.x+5,p.y+2)
end,
onpress1 = function()
local new_pane = {
editor_state = copy_editor(Current_pane.editor_state)
}
new_pane.output_editor_state = output_editor_state(new_pane.editor_state)
Current_pane_index = Current_pane_index+1
table.insert(Panes, Current_pane_index, new_pane)
Current_pane = Panes[Current_pane_index]
end,
})
return x+w+10
end