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--[[
font_api mod for Minetest - Library to add font display capability
to display_api mod.
(c) Pierre-Yves Rollo
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
--]]
local modname = minetest.get_current_modname()
local contexts = {}
minetest.register_on_leaveplayer(function(player)
if minetest.is_player(player) then
contexts[player:get_player_name()] = nil
end
end)
local function get_context(playername)
if not contexts[playername] then
contexts[playername] = { playername = playername }
end
return contexts[playername]
end
-- Show node formspec functions
local function show_node_formspec(playername, pos)
local meta = minetest.get_meta(pos)
-- Decontextualize formspec
local fs = meta:get_string('formspec')
if not fs then
return
end
-- Change context and currrent_name references to nodemeta references
-- Change context and currrent_name references to nodemeta references
local nodemeta = string.format("nodemeta:%i,%i,%i", pos.x, pos.y ,pos.z)
fs = fs:gsub("current_name", nodemeta)
fs = fs:gsub("context", nodemeta)
-- Change all ${} to their corresponding metadata values
local s, e
repeat
s, e = fs:find('%${.*}')
if s and e then
fs = fs:sub(1, s-1)..
minetest.formspec_escape(meta:get_string(fs:sub(s+2,e-1)))..
fs:sub(e+1)
end
until s == nil
local context = get_context(playername)
context.node_pos = pos
-- Find node on_receive_fields
local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
if ndef and ndef.on_receive_fields then
context.on_receive_fields = ndef.on_receive_fields
end
-- Show formspec
minetest.show_formspec(playername, modname..':context_formspec', fs)
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname ~= modname..':context_formspec' then
return
end
if not minetest.is_player(player) then
return true
end
local context = get_context(player:get_player_name())
if context.on_receive_fields then
context.on_receive_fields(context.pos, '', fields, player)
end
return true
end)
-- Specific functions
local function show_font_formspec(playername)
local context = get_context(playername)
local fonts = {}
for name, _ in pairs(font_api.registered_fonts) do
fonts[#fonts+1] = name
end
table.sort(fonts)
local fs = string.format(
"size[4,%s]%s%s%sbutton_exit[0,%s;4,1;cancel;Cancel]",
#fonts + 0.8, default.gui_bg, default.gui_bg_img, default.gui_slots,
#fonts)
for line = 1, #fonts do
local font = font_api.get_font(fonts[line])
local texture = font:make_text_texture(font.name, font:get_height()*5,
font:get_height()*1.2, 1, "center", "top", "#fff")
fs = string.format(
"%simage[0.1,%s;4.5,0.8;%s]button_exit[0,%s;4,1;font_%s;]",
fs, line-0.9, texture, line-1, font.name)
end
minetest.show_formspec(context.playername, modname..':font_list', fs)
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname ~= modname..':font_list' then
return
end
if not minetest.is_player(player) then
return true
end
local playername = player:get_player_name()
local context = get_context(playername)
if not context.pos
or minetest.is_protected(context.pos, playername) then
return true
end
if fields.quit == 'true' then
for name, _ in pairs(font_api.registered_fonts) do
if fields['font_'..name] then
local meta = minetest.get_meta(context.pos)
meta:set_string("font", name)
display_api.update_entities(context.pos)
end
end
if context.callback and type(context.callback) == "function" then
-- Using after to avoid the "double close" bug
minetest.after(0, context.callback, playername, context.pos)
else
-- Using after to avoid the "double close" bug
minetest.after(0, show_node_formspec, playername, context.pos)
end
end
return true
end)
-- @param player Player viewing the form
-- @param pos Node pos
-- @param callback function(playername, pos) to be called on form close
function font_api.show_font_list(player, pos, callback)
if minetest.is_player(player) then
local context = get_context(player:get_player_name())
context.pos = pos
context.callback = callback
show_font_formspec(player:get_player_name())
end
end
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