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New font selection formspec
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171
font_api/fontform.lua
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171
font_api/fontform.lua
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--[[
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font_api mod for Minetest - Library to add font display capability
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to display_api mod.
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(c) Pierre-Yves Rollo
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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--]]
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local modname = minetest.get_current_modname()
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-- Context management functions (surely many improvements to do)
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local contexts = {}
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local function get_player_name(player)
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if type(player) == 'string' then return player end
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if type(player) == 'userdata' and player.get_player_name then
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return player:get_player_name()
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end
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minetest.log('warning', '['..modname..'] get_player_name could not identify player.')
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end
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minetest.register_on_leaveplayer(function(player)
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local playername = get_player_name(player)
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if playername then contexts[playername] = nil end
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end)
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local function new_context(player, context)
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local playername = get_player_name(player)
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if playername then
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contexts[playername] = context
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contexts[playername].playername = playername
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return contexts[playername]
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end
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end
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local function get_context(player)
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local playername = get_player_name(player)
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if playername then
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if contexts[playername] then
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return contexts[playername]
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else
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minetest.log('warning', '['..modname..'] Context not found for player "'..playername..'"')
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end
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end
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end
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local function update_context(player, changes)
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local playername = get_player_name(player)
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if playername then
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if not contexts[playername] then
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contexts[playername] = { playername = playername }
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end
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for key, value in pairs(changes) do
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contexts[playername][key] = value
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end
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end
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end
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-- Show node formspec functions
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local function show_node_formspec(player, pos)
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local meta = minetest.get_meta(pos)
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local playername = get_player_name(player)
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-- Decontextualize formspec
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local fs = meta:get_string('formspec')
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-- Change context and currrent_name references to nodemeta references
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fs = fs:gsub("current_name", "nodemeta:"..pos.x..","..pos.y..","..pos.z)
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fs = fs:gsub("context", "nodemeta:"..pos.x..","..pos.y..","..pos.z)
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-- Change all ${} to their corresponding metadata values
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local s, e
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repeat
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s, e = fs:find('%${.*}')
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if s and e then
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fs = fs:sub(1, s-1)..
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minetest.formspec_escape(meta:get_string(fs:sub(s+2,e-1)))..
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fs:sub(e+1)
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end
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until s == nil
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-- Find node on_receive_fields
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local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
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if ndef and ndef.on_receive_fields then
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update_context(player, { on_receive_fields = ndef.on_receive_fields } )
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end
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update_context(player, { node_pos = pos } )
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-- Show formspec
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minetest.show_formspec(playername, modname..':context_formspec', fs)
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end
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minetest.register_on_player_receive_fields(function(player, formname, fields)
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if formname == modname..':context_formspec' then
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local context = get_context(player)
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if context == nil then return end
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if context.on_receive_fields then
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context.on_receive_fields(context.pos, '', fields, player)
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end
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end
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end)
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-- Specific functions
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local function font_list_prepare()
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local list = {}
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for name, _ in pairs(font_api.registered_fonts) do
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list[#list+1] = name
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end
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table.sort(list)
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return list
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end
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local function show_fs(player)
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local context = get_context(player)
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if context == nil then return end
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local fonts = font_list_prepare()
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local fs = 'size[4,'..(#fonts + 0.8)..']'
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..default.gui_bg..default.gui_bg_img..default.gui_slots
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..'button_exit[0,'..(#fonts)..';4,1;cancel;Cancel]'
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for line = 1, #fonts do
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local font = font_api.get_font(fonts[line])
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fs = fs..'image[0.1,'..(line-0.9)..';4.5,0.8;'
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..font:make_text_texture(font.name, font:get_height()*5,
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font:get_height()*1.2, 1, "center", "top", "#fff")
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..']button_exit[0,'..(line-1)..';4,1;font_'..font.name..';]'
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end
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minetest.show_formspec(context.playername, modname..':font_list', fs)
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end
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minetest.register_on_player_receive_fields(function(player, formname, fields)
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if formname == modname..':font_list' then
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local context = get_context(player)
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if context == nil then return end
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if fields.quit == 'true' then
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for name, _ in pairs(font_api.registered_fonts) do
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if fields['font_'..name] then
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local meta = minetest.get_meta(context.pos)
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meta:set_string("font", name)
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display_api.update_entities(context.pos)
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end
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end
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-- Using after to avoid the "double close" bug
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minetest.after(0, show_node_formspec, player, context.pos)
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end
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end
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end)
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function font_api.show_font_list(player, pos)
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new_context(player, { pos = pos })
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show_fs(player)
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end
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@ -29,6 +29,7 @@ font_api.path = minetest.get_modpath(font_api.name)
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dofile(font_api.path.."/font.lua")
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dofile(font_api.path.."/registry.lua")
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dofile(font_api.path.."/fontform.lua")
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--- Standard on_display_update entity callback.
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-- Node should have a corresponding display_entity with size, resolution and
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@ -62,4 +63,3 @@ end
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-- Compatibility
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font_lib = font_api
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