Hi Holger,
There is no such component in DT Lua API, however you can create simply
workaround just putting list of the check buttons. You can make it a bit
better If you add horizontal box with two buttons to change order and
checkbox to make it selectable. I've prepare simple example.
BR,
Dominik
sob., 17 lut 2018 o 10:35 użytkownik Holger Klemm <
darkta...@multimedia4linux.de> napisał:
> Hello,
> I wrote a lua script to export a slideshow.
> https://www.multimedia4linux.de/images/darktable/plugins/
> slideshow_export-1.1.0.tar
>
>
> https://www.multimedia4linux.de/index.php/bildbearbeitung/darktable/darktable-plugin-diashow-export
>
> At the moment you can only attach one audio file.
>
> I would like to attach several audio files and put them in a list box (as
> used
> in the tag module). The files should then be selectable in the list box
> to be
> able to change the order, to be able to remove the file or to be able to
> play
> the selected file.
>
> Unfortunately, I found no way in Lua to create such a listbox.
> A multi-line label or text_view does not work and does not look like a
> listbox.
>
> Does anyone have an idea how I can implement the listbox or could you
> integrate the GUI element in LUA?
>
> greeting
> Holger
> ___________________________________________________________________________
> darktable developer mailing list
> to unsubscribe send a mail to
> darktable-dev+unsubscr...@lists.darktable.org
>
> --
Best Regards,
Dominik Markiewicz
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local dt = require 'darktable'
--- List component
-- private utils methods
local list_metatable = {}
list_metatable.__index = list_metatable
function list_metatable._add_single_row(self, id)
local function check_callback(w)
self.values[id].value = w.value
if self.on_select then
self.on_select(id, self.values[id].text, self.values[id].value)
end
end
local function up_callback(w)
self.values[id - 1], self.values[id] = self.values[id], self.values[id - 1]
self:_update()
if self.on_change_order then
self.on_change_order(id-1, id, self.values)
end
end
local function down_callback(w)
self.values[id + 1], self.values[id] = self.values[id], self.values[id + 1]
self:_update()
if self.on_change_order then
self.on_change_order(id, id + 1, self.values)
end
end
local hbox = dt.new_widget('box'){orientation='horizontal'}
self._boxes[id] = {
box = hbox,
up = dt.new_widget('button'){label='â²', sensitive=id>1, clicked_callback=up_callback},
down = dt.new_widget('button'){label='â¼', sensitive=#self.values>id, clicked_callback=down_callback},
cb = dt.new_widget('check_button'){label='', clicked_callback=check_callback, value=false}
}
hbox[1] = self._boxes[id].up
hbox[2] = self._boxes[id].down
hbox[3] = self._boxes[id].cb
self.widget[id] = hbox
end
function list_metatable._remove_single_row(self, idx)
self._boxes[idx].box[3] = nil
self._boxes[idx].box[2] = nil
self._boxes[idx].box[1] = nil
self._boxes[idx] = nil
self.widget[idx] = nil
end
function list_metatable._clear_container(self)
old_values_num = #self.values
for idx = #self.values,1,-1 do
self:_remove_single_row(idx)
end
end
function list_metatable._update_items_number(self, new)
local old = #self.values
if old == new then return end
if old < new then
for idx = old+1,new do
if idx > 1 then
self._boxes[idx-1].down.sensitive = true
end
self:_add_single_row(idx)
end
else
for idx = old,new+1,-1 do
self:_remove_single_row(idx)
end
if new >= 1 then
self._boxes[new].down.sensitive = false
end
end
end
function list_metatable._update(self)
local len = #self.values
for id, entry in ipairs(self.values) do
self._boxes[id].cb.label = entry.text
self._boxes[id].cb.value = entry.value
end
end
-- public API
function list_metatable.insert_value(self, idx, value)
if idx > #self.values then
idx = #self.values + 1
elseif idx < 1 then
idx = 1
end
self:_update_items_number(#self.values + 1)
table.insert(self.values, idx, {text=value, value=false})
self:_update()
end
function list_metatable.remove_value(self, idx)
self:_update_items_number(#self.values - 1)
table.remove(self.values, idx)
self:_update()
end
function list_metatable.remove_values(self, idxs)
self:_update_items_number(#self.values - #idxs)
table.sort(idxs, function(a,b) return a > b end)
for _, idx in ipairs(idxs) do
table.remove(self.values, idx)
end
self:_update()
end
function list_metatable.append_values(self, values)
self:_update_items_number(#self.values + #values)
for _, v in ipairs(values) do
table.insert(self.values, {text= v, value= false})
end
self:_update()
end
local function List(selection_callback, change_order_callback)
local container = dt.new_widget('box'){}
local obj = {
widget = container,
values = {},
on_select = selection_callback,
on_change_order = change_order_callback,
_boxes = {} -- this is dueto bug that is fixed in #1496 - I cannot access member of the collection by id...
}
return setmetatable(obj, list_metatable)
end
-- usage example stuff
local function selection_callback(id, txt, value)
dt.print(string.format("%s %s %s", id, txt, value))
end
local function change_order_callback(id1, id2, values)
dt.print(string.format("%s (%s) <-> %s (%s)", values[id1].text, values[id2].text, id1, id2))
end
local l1 = List(selection_callback, change_order_callback)
l1:append_values({'Lorem ipsum dolor sit amet', 'consectetur adipiscing elit', 'consectetur adipiscing elit'})
local add_random = dt.new_widget('button'){
label='+',
clicked_callback=function()
local label = "test " .. tostring(math.random(0, 1000))
local position = math.random(0, 10)
l1:insert_value(position, label)
end
}
local remove_selected = dt.new_widget('button'){
label='remove selected',
clicked_callback = function()
local to_remove = {}
for idx, entry in ipairs(l1.values) do
if entry.value then
table.insert(to_remove, idx)
end
end
l1:remove_values(to_remove)
end
}
local box = dt.new_widget('box'){}
box[1] = l1.widget -- GOTCHA, you need to get widget out of the table
box[2] = add_random
box[3] = remove_selected
dt.register_lib(
'test_lib',
'test',
true,
false,
{[dt.gui.views.lighttable] = {"DT_UI_CONTAINER_PANEL_LEFT_CENTER", 100}},
box,
nil,
nil
)
