277 lines
7.5 KiB
Lua
277 lines
7.5 KiB
Lua
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-- grid :: a menu with arbitrary widget placement and size on a grid.
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--[[
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Copyright © 2019 Kazhnuz
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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]]
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local cwd = (...):gsub('%.grid$', '') .. "."
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local Menu = require(cwd .. "parent")
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local GridBox = Menu:extend()
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local menuutils = require(cwd .. "widgets.utils")
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-- INIT FUNCTIONS
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-- Initialize and configure the menu
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function GridBox:new(menusystem, name, x, y, w, h, colNumber, lineNumber)
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self.view = {}
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self.view.slotNumber = colNumber * lineNumber
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self.view.colNumber = colNumber
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self.view.lineNumber = lineNumber
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self.view.firstSlot = 1
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GridBox.super.new(self, menusystem, name, x, y, w, h)
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self.h = lineNumber * self.widget.h -- On fait en sorte que la hauteur
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self.w = colNumber * self.widget.w -- et la largeur
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-- soit un multiple du nombre de slot et de leur dimensions
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self.cursor = {}
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self.cursor.x = 0
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self.cursor.y = 0
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-- La gridbox possède la particularité de pouvoir fusioner des slots, on fait
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-- donc une liste de slots disponibles, qui serviront par la suite.
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self.slots = {}
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end
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function GridBox:addSlot(widgetID, x, y, w, h)
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local slot = {}
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slot.x = x
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slot.y = y
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slot.w = w
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slot.h = h
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slot.widgetID = widgetID
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table.insert(self.slots, slot)
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end
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function GridBox:updateWidgetSize()
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self.widget.h = math.floor( self.h / self.view.lineNumber )
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self.widget.w = math.floor( self.w / self.view.colNumber )
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end
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-- INFO FUNCTIONS
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-- Get the info of the widgets
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function GridBox:getWidgetSize(id)
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local slot = self:getWidgetSlot(id)
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if slot == 0 then
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return 1, 1
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else
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return self.widget.w * self.slots[slot].w, self.widget.h * self.slots[slot].h
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end
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end
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function GridBox:getSlotHitbox(slot)
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local x, y, w, h
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x = self.slots[slot].x * self.widget.w
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y = self.slots[slot].y * self.widget.h
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w = self.slots[slot].w * self.widget.w
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h = self.slots[slot].h * self.widget.h
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return x, y, w, h
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end
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function GridBox:getSlotCenter(slot)
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local x, y, w, h = self:getSlotHitbox(slot)
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return x + (w/2), y + (h/2)
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end
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function GridBox:getWidgetID(slot)
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local widgetID
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if self.slots[slot] ~= nil then
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widgetID = self.slots[slot].widgetID
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else
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widgetID = 0
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end
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return widgetID
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end
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function GridBox:haveWidget(slot)
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local id = self:getWidgetID(slot)
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return self.widget.list[id] ~= nil
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end
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function GridBox:getWidgetSlot(widgetID)
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local slot = 0
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for i,v in ipairs(self.slots) do
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if (self.slots[i].widgetID == widgetID) then
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slot = i
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end
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end
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return slot
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end
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function GridBox:getWidgetAtPoint(x, y)
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local x = x or 0
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local y = y or 0
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local widgetID = nil
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for i,v in ipairs(self.slots) do
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local xx, yy, ww, hh = self:getSlotHitbox(i)
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if (x >= xx) and (y >= yy) and (x < xx + ww) and (y < yy + hh) then
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widgetID = v.widgetID
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end
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end
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return widgetID
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end
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-- UPDATE FUNCTIONS
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-- Update the Grid and its view
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function GridBox:update(dt)
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self.view.firstSlot = 1
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end
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-- KEYS FUNCTIONS
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-- Handle the keyboard/manette functions
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function GridBox:keyreleased(key, code)
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slotID = self:getWidgetSlot(self.widget.selected)
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local col, line = self.cursor.x, self.cursor.y
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if key == 'left' then
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self:moveCol(-1)
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end
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if key == 'right' then
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self:moveCol(1)
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end
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if key == 'up' then
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self:moveLine(-1)
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end
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if key == 'down' then
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self:moveLine(1)
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end
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if key == "A" and self.widget.selected <= #self.widget.list then
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self.widget.list[self.widget.selected]:action("key")
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end
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end
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function GridBox:moveCol(direction)
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local orig_x, orig_y = self:getSlotCenter(self.widget.selected)
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local distance = self.w -- on met directement à la distance max possible le système
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local nearastWidget = 0
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for i,v in ipairs(self.slots) do
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local xx, yy = self:getSlotCenter(i)
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-- On commence par vérifier si le slot est bien positionné par rapport au
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-- widget de base
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if utils.math.sign(xx - orig_x) == direction then
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if utils.math.pointDistance(orig_x, orig_y, xx, yy) < distance then
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distance = utils.math.pointDistance(orig_x, orig_y, xx, yy)
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nearestWidget = v.widgetID
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end
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end
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end
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if nearestWidget ~= 0 then
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self.widget.selected = nearestWidget
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end
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end
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function GridBox:moveLine(direction)
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local orig_x, orig_y = self:getSlotCenter(self.widget.selected)
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local distance = self.h -- on met directement à la distance max possible le système
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local nearastWidget = 0
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for i,v in ipairs(self.slots) do
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local xx, yy = self:getSlotCenter(i)
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-- On commence par vérifier si le slot est bien positionné par rapport au
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-- widget de base
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if utils.math.sign(yy - orig_y) == direction then
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if utils.math.pointDistance(orig_x, orig_y, xx, yy) < distance then
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distance = utils.math.pointDistance(orig_x, orig_y, xx, yy)
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nearestWidget = v.widgetID
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end
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end
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end
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if nearestWidget ~= 0 then
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self.widget.selected = nearestWidget
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end
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end
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-- MOUSE FUNCTIONS
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-- Handle the mouse and activate the widgets with it
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function GridBox:mousemoved(x, y)
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local widgetID = self:getWidgetAtPoint(x, y)
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if widgetID ~= nil then
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self.widget.selected = widgetID
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self:getFocus()
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end
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if self.widget.selected < 1 then
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self.widget.selected = 1
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end
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if self.widget.selected > #self.widget.list then
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self.widget.selected = #self.widget.list
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end
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end
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function GridBox:mousepressed(x, y, button, isTouch)
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local widgetID = self:getWidgetAtPoint(x, y)
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if widgetID ~= nil then
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self.widget.selected = widgetID
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self:getFocus()
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if #self.widget.list > 0 and self.widget.selected > 1 and self.widget.selected <= #self.widget.list then
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self.widget.list[self.widget.selected]:action("pointer")
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end
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end
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end
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-- DRAW FUNCTIONS
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-- Draw the menu and its content
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function GridBox:draw()
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for i,v in ipairs(self.slots) do
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if self:haveWidget(i) then
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local widgetx = self.x + (v.x * self.widget.w)
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local widgety = self.y + (v.y * self.widget.h)
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if self.widget.selected == v.widgetID and self:haveFocus() == true then
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self.widget.list[v.widgetID]:drawSelected(widgetx, widgety)
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else
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self.widget.list[v.widgetID]:draw(widgetx, widgety)
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end
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end
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end
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end
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function GridBox:drawCursor()
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self:updateView()
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if (self.widget.selected >= 1 and self.widget.selected <= #self.widget.list) then
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local slot = self:getWidgetSlot(self.widget.selected)
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local w, h = self:getWidgetSize(slot)
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local x = self.slots[slot].x * self.widget.w
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local y = self.slots[slot].y * self.widget.h
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menuutils.drawCursor(self.x + x, self.y + y, w, h)
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end
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end
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return GridBox
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