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generated by cgit v1.2.3 (git 2.39.1) at 2025-01-27 10:43:52 +0000
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--Minetest
--Copyright (C) 2014 sapier
--
--self program is free software; you can redistribute it and/or modify
--it under the terms of the GNU Lesser General Public License as published by
--the Free Software Foundation; either version 2.1 of the License, or
--(at your option) any later version.
--
--self 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 Lesser General Public License for more details.
--
--You should have received a copy of the GNU Lesser General Public License along
--with self program; if not, write to the Free Software Foundation, Inc.,
--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


local function buttonbar_formspec(self)

	if self.hidden then
		return ""
	end

	local formspec = string.format("box[%f,%f;%f,%f;%s]",
			self.pos.x,self.pos.y ,self.size.x,self.size.y,self.bgcolor)
		
	for i=self.startbutton,#self.buttons,1 do
		local btn_name = self.buttons[i].name
		local btn_pos = {}
		
		if self.orientation == "horizontal" then
			btn_pos.x = self.pos.x + --base pos
			(i - self.startbutton) * self.btn_size +       --button offset
			self.btn_initial_offset
		else
			btn_pos.x = self.pos.x + (self.btn_size * 0.05)
		end
		
		if self.orientation == "vertical" then
			btn_pos.y = self.pos.y + --base pos
			(i - self.startbutton) * self.btn_size +       --button offset
			self.btn_initial_offset
		else
			btn_pos.y = self.pos.y + (self.btn_size * 0.05)
		end
		
		if (self.orientation == "vertical" and
			(btn_pos.y + self.btn_size <= self.pos.y + self.size.y)) or
			(self.orientation == "horizontal" and
			(btn_pos.x + self.btn_size <= self.pos.x + self.size.x)) then
			
		local borders="true"
		
		if self.buttons[i].image ~= nil then
			borders="false"
		end
			
		formspec = formspec ..
			string.format("image_button[%f,%f;%f,%f;%s;%s;%s;true;%s]",
					btn_pos.x, btn_pos.y, self.btn_size, self.btn_size,
					self.buttons[i].image, btn_name, self.buttons[i].caption,
					borders)
		else
			--print("end of displayable buttons: orientation: " .. self.orientation)
			--print( "button_end: " .. (btn_pos.y + self.btn_size - (self.btn_size * 0.05)))
			--print( "bar_end: " .. (self.pos.x + self.size.x))
			break
		end
	end

	if (self.have_move_buttons) then
		local btn_dec_pos = {}
		btn_dec_pos.x = self.pos.x + (self.btn_size * 0.05)
		btn_dec_pos.y = self.pos.y + (self.btn_size * 0.05)
		local btn_inc_pos = {}
		local btn_size = {}
		
		if self.orientation == "horizontal" then
			btn_size.x = 0.5
			btn_size.y = self.btn_size
			btn_inc_pos.x = self.pos.x + self.size.x - 0.5
			btn_inc_pos.y = self.pos.y + (self.btn_size * 0.05)
		else
			btn_size.x = self.btn_size
			btn_size.y = 0.5
			btn_inc_pos.x = self.pos.x + (self.btn_size * 0.05)
			btn_inc_pos.y = self.pos.y + self.size.y - 0.5
		end
		
		local text_dec = "<"
		local text_inc = ">"
		if self.orientation == "vertical" then
			text_dec = "^"
			text_inc = "v"
		end
		
		formspec = formspec ..
			string.format("image_button[%f,%f;%f,%f;;btnbar_dec_%s;%s;true;true]",
					btn_dec_pos.x, btn_dec_pos.y, btn_size.x, btn_size.y,
					self.name, text_dec)
				
		formspec = formspec ..
			string.format("image_button[%f,%f;%f,%f;;btnbar_inc_%s;%s;true;true]",
					btn_inc_pos.x, btn_inc_pos.y, btn_size.x, btn_size.y,
					 self.name, text_inc)
	end
	
	return formspec
end

local function buttonbar_buttonhandler(self, fields)

	if fields["btnbar_inc_" .. self.name] ~= nil and
		self.startbutton < #self.buttons then
		
		self.startbutton = self.startbutton + 1
		return true
	end
	
	if fields["btnbar_dec_" .. self.name] ~= nil and self.startbutton > 1 then
		self.startbutton = self.startbutton - 1
		return true
	end
	
	for i=1,#self.buttons,1 do
		if fields[self.buttons[i].name] ~= nil then
			return self.userbuttonhandler(fields)
		end
	end
end

local buttonbar_metatable = {
	handle_buttons = buttonbar_buttonhandler,
	handle_events  = function(self, event) end,
	get_formspec   = buttonbar_formspec,
	
	hide = function(self) self.hidden = true end,
	show = function(self) self.hidden = false end,

	delete = function(self) ui.delete(self) end,
	
	add_button = function(self, name, caption, image)
			if caption == nil then caption = "" end
			if image == nil then image = "" end
			
			table.insert(self.buttons,{ name=name, caption=caption, image=image})