sonic-bluestreak/sonic-bluestreak.love/birb/modules/menusystem/flowbox.lua

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-- flowbox :: flexible box menu, that handle in grid the widgets
--[[
Copyright © 2019 Kazhnuz
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
]]
local cwd = (...):gsub('%.flowbox$', '') .. "."
local Menu = require(cwd .. "parent")
local FlowBox = Menu:extend()
local menuutils = require(cwd .. "widgets.utils")
-- INIT FUNCTIONS
-- Initialize and configure the flowbox
function FlowBox:new(menusystem, name, x, y, w, h, slots_hor, slots_vert)
self.view = {}
self.view.slotNumber = slots_hor * slots_vert
self.view.lineNumber = slots_vert
self.view.colNumber = slots_hor
self.view.firstSlot = 1
FlowBox.super.new(self, menusystem, name, x, y, w, h)
self.widget.h = math.floor( self.h / slots_vert )
self.widget.w = math.floor( self.w / slots_hor )
self.h = slots_vert * self.widget.h -- On fait en sorte que la hauteur
self.w = slots_hor * self.widget.w -- et la largeur
-- soit un multiple du nombre de slot et de leur dimensions
end
-- UPDATE FUNCTIONS
-- Update the menu and its view
function FlowBox:updateWidgetSize()
self.widget.h = math.floor( self.h / self.view.lineNumber )
self.widget.w = math.floor( self.w / self.view.colNumber )
end
function FlowBox:update(dt)
self:updateView()
self:updateSelectedWidget(dt)
end
function FlowBox:updateView()
local col, line = self:getCoord(self.widget.selected)
local begincol, beginline = self:getCoord(self.view.firstSlot)
if line < beginline then
beginline = line
end
if line > beginline + self.view.lineNumber - 1 then
beginline = line - self.view.lineNumber + 1
end
if beginline < 0 then
beginline = 0
end
self.view.firstSlot = beginline * self.view.colNumber + 1
end
-- INFO FUNCTIONS
-- Get informations
function FlowBox:getCoord(id_selected)
id_selected = id_selected - 1 -- On simplifie les calcul en prenant 0 comme départ
local line, col
line = math.floor(id_selected / self.view.colNumber)
col = id_selected - (line * self.view.colNumber)
return col, line
end
-- CURSOR FUNCTIONS
-- Handle the cursor in a 2D menu
function FlowBox:moveCursor(new_col, new_line)
local col, line = self:getCoord(self.widget.selected)
local lastcol, lastline = self:getCoord(#self.widget.list)
if new_line < 0 then
new_line = lastline
end
if new_line > lastline then
new_line = 0
end
if (new_line == lastline) then
if new_col < 0 then
new_col = lastcol
end
if new_col > lastcol then
if (line == lastline) then
new_col = 0
else
new_col = lastcol
end
end
else
if new_col < 0 then
new_col = self.view.colNumber - 1
end
if new_col == self.view.colNumber then
new_col = 0
end
end
self.widget.selected = (new_line * self.view.colNumber) + new_col + 1
end
-- KEYS FUNCTIONS
-- Handle the keyboard/controller inputs
function FlowBox:keyreleased(key, code)
local col, line = self:getCoord(self.widget.selected)
if key == 'left' then
self:moveCursor(col - 1, line)
end
if key == 'right' then
self:moveCursor(col + 1, line)
end
if key == 'up' then
self:moveCursor(col, line - 1)
end
if key == 'down' then
self:moveCursor(col, line + 1)
end
if key == "A" then
if (self.widget.selected >= 1 and self.widget.selected <= #self.widget.list) then
self.widget.list[self.widget.selected]:action("key")
end
end
end
-- MOUSE FUNCTIONS
-- Handle the mouse/touch pointer
function FlowBox:mousemoved(x, y)
local col, line = self:getCoord(self.widget.selected)
local begincol, beginline = self:getCoord(self.view.firstSlot)
local newcol, newline, widget_selected
newline = beginline + math.floor(y / self.widget.h)
newcol = math.floor(x / self.widget.w)
widget_selected = (newline * self.view.colNumber) + newcol + 1
if widget_selected >= 1 and widget_selected <= #self.widget.list then
self.widget.selected = widget_selected
self:getFocus()
end
end
function FlowBox:mousepressed(x, y, button, isTouch)
local col, line = self:getCoord(self.widget.selected)
local begincol, beginline = self:getCoord(self.view.firstSlot)
local newline, newcol, widget_selected
newline = beginline + math.floor(y / self.widget.h)
newcol = math.floor(x / self.widget.w)
widget_selected = (newline * self.view.colNumber) + newcol + 1
if widget_selected >= 1 and widget_selected <= #self.widget.list then
self.widget.selected = widget_selected
self:getFocus()
self.widget.list[self.widget.selected]:action("pointer")
end
end
-- DRAW FUNCTIONS
-- Draw the menu and its content
function FlowBox:draw()
self:updateView()
local widgety = self.y
local widgetx = self.x
for i,v in ipairs(self.widget.list) do
if (i >= self.view.firstSlot) and (i < self.view.firstSlot + self.view.slotNumber) then
v:draw(widgetx, widgety, self.widget.w, self.widget.h)
if self.widget.selected == i and self:haveFocus() == true then
v:drawSelected(widgetx, widgety, self.widget.w, self.widget.h)
else
v:draw(widgetx, widgety, self.widget.w, self.widget.h)
end
widgetx = widgetx + self.widget.w
if widgetx == (self.x + self.w) then
widgetx = self.x
widgety = widgety + self.widget.h
end
end
end
end
function FlowBox:drawCursor()
self:updateView()
local begincol, beginline = self:getCoord(self.view.firstSlot)
if (self.widget.selected >= 1 and self.widget.selected <= #self.widget.list) then
local w, h = self:getWidgetSize()
local col, line = self:getCoord(self.widget.selected)
local x = (col) * h
local y = (line - beginline) * h
menuutils.drawCursor(self.x + x, self.y + y, w, h)
end
end
return FlowBox