mirror of
https://github.com/minetest/minetest.git
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216 lines
5.9 KiB
Lua
216 lines
5.9 KiB
Lua
--Minetest
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--Copyright (C) 2014 sapier
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--
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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 Lesser General Public License as published by
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--the Free Software Foundation; either version 2.1 of the License, or
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--(at your option) any later version.
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--
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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 Lesser General Public License for more details.
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--
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--You should have received a copy of the GNU Lesser General Public License along
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--with this program; if not, write to the Free Software Foundation, Inc.,
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--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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local function buttonbar_formspec(self)
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if self.hidden then
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return ""
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end
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local formspec = string.format("box[%f,%f;%f,%f;%s]",
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self.pos.x,self.pos.y ,self.size.x,self.size.y,self.bgcolor)
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for i=self.startbutton,#self.buttons,1 do
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local btn_name = self.buttons[i].name
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local btn_pos = {}
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if self.orientation == "horizontal" then
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btn_pos.x = self.pos.x + --base pos
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(i - self.startbutton) * self.btn_size + --button offset
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self.btn_initial_offset
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else
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btn_pos.x = self.pos.x + (self.btn_size * 0.05)
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end
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if self.orientation == "vertical" then
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btn_pos.y = self.pos.y + --base pos
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(i - self.startbutton) * self.btn_size + --button offset
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self.btn_initial_offset
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else
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btn_pos.y = self.pos.y + (self.btn_size * 0.05)
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end
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if (self.orientation == "vertical" and
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(btn_pos.y + self.btn_size <= self.pos.y + self.size.y)) or
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(self.orientation == "horizontal" and
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(btn_pos.x + self.btn_size <= self.pos.x + self.size.x)) then
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local borders="true"
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if self.buttons[i].image ~= nil then
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borders="false"
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end
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formspec = formspec ..
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string.format("image_button[%f,%f;%f,%f;%s;%s;%s;true;%s]tooltip[%s;%s]",
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btn_pos.x, btn_pos.y, self.btn_size, self.btn_size,
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self.buttons[i].image, btn_name, self.buttons[i].caption,
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borders, btn_name, self.buttons[i].tooltip)
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else
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--print("end of displayable buttons: orientation: " .. self.orientation)
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--print( "button_end: " .. (btn_pos.y + self.btn_size - (self.btn_size * 0.05)))
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--print( "bar_end: " .. (self.pos.x + self.size.x))
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break
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end
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end
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if (self.have_move_buttons) then
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local btn_dec_pos = {}
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btn_dec_pos.x = self.pos.x + (self.btn_size * 0.05)
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btn_dec_pos.y = self.pos.y + (self.btn_size * 0.05)
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local btn_inc_pos = {}
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local btn_size = {}
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if self.orientation == "horizontal" then
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btn_size.x = 0.5
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btn_size.y = self.btn_size
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btn_inc_pos.x = self.pos.x + self.size.x - 0.5
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btn_inc_pos.y = self.pos.y + (self.btn_size * 0.05)
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else
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btn_size.x = self.btn_size
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btn_size.y = 0.5
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btn_inc_pos.x = self.pos.x + (self.btn_size * 0.05)
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btn_inc_pos.y = self.pos.y + self.size.y - 0.5
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end
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local text_dec = "<"
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local text_inc = ">"
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if self.orientation == "vertical" then
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text_dec = "^"
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text_inc = "v"
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end
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formspec = formspec ..
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string.format("image_button[%f,%f;%f,%f;;btnbar_dec_%s;%s;true;true]",
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btn_dec_pos.x, btn_dec_pos.y, btn_size.x, btn_size.y,
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self.name, text_dec)
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formspec = formspec ..
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string.format("image_button[%f,%f;%f,%f;;btnbar_inc_%s;%s;true;true]",
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btn_inc_pos.x, btn_inc_pos.y, btn_size.x, btn_size.y,
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self.name, text_inc)
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end
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return formspec
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end
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local function buttonbar_buttonhandler(self, fields)
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if fields["btnbar_inc_" .. self.name] ~= nil and
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self.startbutton < #self.buttons then
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self.startbutton = self.startbutton + 1
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return true
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end
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if fields["btnbar_dec_" .. self.name] ~= nil and self.startbutton > 1 then
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self.startbutton = self.startbutton - 1
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return true
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end
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for i=1,#self.buttons,1 do
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if fields[self.buttons[i].name] ~= nil then
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return self.userbuttonhandler(fields)
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end
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end
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end
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local buttonbar_metatable = {
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handle_buttons = buttonbar_buttonhandler,
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handle_events = function(self, event) end,
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get_formspec = buttonbar_formspec,
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hide = function(self) self.hidden = true end,
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show = function(self) self.hidden = false end,
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delete = function(self) ui.delete(self) end,
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add_button = function(self, name, caption, image, tooltip)
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if caption == nil then caption = "" end
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if image == nil then image = "" end
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if tooltip == nil then tooltip = "" end
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self.buttons[#self.buttons + 1] = {
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name = name,
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caption = caption,
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image = image,
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tooltip = tooltip
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}
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if self.orientation == "horizontal" then
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if ( (self.btn_size * #self.buttons) + (self.btn_size * 0.05 *2)
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> self.size.x ) then
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self.btn_initial_offset = self.btn_size * 0.05 + 0.5
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self.have_move_buttons = true
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end
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else
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if ((self.btn_size * #self.buttons) + (self.btn_size * 0.05 *2)
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> self.size.y ) then
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self.btn_initial_offset = self.btn_size * 0.05 + 0.5
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self.have_move_buttons = true
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end
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end
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end,
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set_bgparams = function(self, bgcolor)
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if (type(bgcolor) == "string") then
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self.bgcolor = bgcolor
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end
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end,
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}
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buttonbar_metatable.__index = buttonbar_metatable
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function buttonbar_create(name, cbf_buttonhandler, pos, orientation, size)
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assert(name ~= nil)
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assert(cbf_buttonhandler ~= nil)
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assert(orientation == "vertical" or orientation == "horizontal")
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assert(pos ~= nil and type(pos) == "table")
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assert(size ~= nil and type(size) == "table")
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local self = {}
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self.name = name
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self.type = "addon"
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self.bgcolor = "#000000"
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self.pos = pos
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self.size = size
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self.orientation = orientation
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self.startbutton = 1
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self.have_move_buttons = false
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self.hidden = false
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if self.orientation == "horizontal" then
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self.btn_size = self.size.y
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else
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self.btn_size = self.size.x
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end
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if (self.btn_initial_offset == nil) then
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self.btn_initial_offset = self.btn_size * 0.05
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end
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self.userbuttonhandler = cbf_buttonhandler
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self.buttons = {}
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setmetatable(self,buttonbar_metatable)
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ui.add(self)
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return self
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end
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