Buttons Barebone Library

[darkfrei]

Hi all!

There is a buttons barebone library, it supports what you want it to support.

For example:

Code: Select all

-- main.lua
local myButtons = require ('myButtons')

function love.load()
	local color = {1,1,1}
	local function onButtonHovered (button)
		button.hovered = true
		button.lineWidth = 4
	end

	local function onButtonNotHovered (button)
		button.hovered = false
		button.lineWidth = 2
	end

	local function onToggle (button)
		button.toggled = not button.toggled
		if button.toggled then
			button.color = {0,1,0}
		else
			button.color = {1,0,0}
		end
		myButtons.buttons[2].enabled = button.toggled
	end

	local function drawButton (button)
		love.graphics.setColor (button.color)
		love.graphics.setLineWidth (button.lineWidth)
		love.graphics.rectangle ('line', button.x, button.y, button.w, button.h)
		if button.textColor  then
			love.graphics.setColor (button.textColor)
		end
		if button.text then
			love.graphics.print (button.text, button.x, button.y)
		end
	end

	local function drawDisabledButton (button)
		love.graphics.setColor ({0.5,0.5,0.5})
		love.graphics.setLineWidth (button.lineWidth)
		love.graphics.rectangle ('line', button.x, button.y, button.w, button.h)
		if button.textColor  then
			love.graphics.setColor (button.textColor)
		end
		if button.text then
			love.graphics.print (button.text, button.x, button.y)
		end
	end

	local function drawButton2 (button)
		love.graphics.setColor (1,1,1)
		love.graphics.draw (button.image, button.x, button.y)
		if button.hovered then
			love.graphics.rectangle ('line', button.x, button.y, button.w, button.h)
		end
		if button.text then
			love.graphics.print (button.text, button.x, button.y)
		end
	end

	local image = love.graphics.newCanvas (100, 100)
	love.graphics.setCanvas (image)
	love.graphics.setLineStyle ('rough')
	love.graphics.line (10,20, 90,20, 55,90)
	love.graphics.setCanvas ()

	myButtons:new {x=50, y=10, w=100, h=100, color=color, 
		drawButton=drawButton, 
		onButtonHovered=onButtonHovered, 
		onButtonNotHovered=onButtonNotHovered,
		onToggle = onToggle,
		text = "First",
		textColor = {1,1,1},
	}

	myButtons:new {x=200, y=10, w=100, h=100, color=color, 
		drawButton=drawButton, 
		onButtonHovered=onButtonHovered, 
		onButtonNotHovered=onButtonNotHovered,
		onToggle = onToggle,
		text = "Second",
		enabled = false,
		drawDisabledButton = drawDisabledButton,
	}

	myButtons:new {
		x=350, y=10, w=100, h=100, 
		drawButton=drawButton2,
		image=image, 
		onButtonHovered = onButtonHovered,
		onButtonNotHovered=onButtonNotHovered,
		text = "Third"}

	myButtons:new {
		x=500, y=10, w=100, h=100,
		color={0,1,1},
		drawButton=drawButton,
		onButtonHovered = onButtonHovered,
		onButtonNotHovered=onButtonNotHovered,
		onButtonPressed = love.event.quit,
		text = "Exit",
		textColor = {1,1,1},
	}
end

function love.update(dt)
	myButtons.update (dt)
end

function love.draw()
	myButtons.draw ()
end

function love.keypressed(key, scancode, isrepeat)
	if false then
	elseif key == "escape" then
		love.event.quit()
	end
end

function love.mousepressed( x, y, button, istouch, presses )
	myButtons.mousepressed(x, y, button)
end

function love.mousemoved( x, y, dx, dy, istouch )
	myButtons.mousemoved (x, y, dx, dy)
end

function love.mousereleased( x, y, button, istouch, presses )
	myButtons.mousereleased(x, y, button)
end

Code: Select all

-- myButtons.lua
local myButtons = {}

myButtons.buttons = {} -- default button set
myButtons.buttonSets = {myButtons.buttons}

function myButtons:newButtonsSet ()
	local buttonSet = {}
	myButtons.buttons = buttonSet
	table.insert (myButtons.buttonSets, buttonSet)
	return buttonSet
end

function myButtons:setButtonsSet (buttonSet)
	myButtons.buttons = buttonSet
	return buttonSet
end

function myButtons:new (data)
	local button = {}
	for i, v in pairs (data) do
		button[i] = v
	end
	if not (button.enabled == false) then
		button.enabled = true
	end
	if button.onButtonNotHovered then
		button:onButtonNotHovered ()
	end
	table.insert(myButtons.buttons, button)
	return button
end

function myButtons.update(dt)
	for i, button in ipairs(myButtons.buttons) do
		if button.enabled and button.updateButton then
			button:updateButton(dt)
		end
	end
end

local function isOn (mx, my, x, y, w, h)
	if (mx > x) and (mx < (x + w)) and (my > y) and (my < (y + h)) then
		return true
	end
end

function myButtons.mousepressed(mx, my, mbutton)
	for i, button in ipairs(myButtons.buttons) do
		local x, y, w, h = button.x, button.y, button.w, button.h
		if button.enabled and isOn (mx, my, x, y, w, h) then
			if button.onToggle then
				button:onToggle(mx, my, mbutton, button.value)
			elseif button.onButtonPressed then
				button:onButtonPressed(mx, my, mbutton)
			end
		end
	end
end

function myButtons.mousereleased(mx, my, mbutton)
	for i, button in ipairs(myButtons.buttons) do
		local x, y, w, h = button.x, button.y, button.w, button.h
		if button.enabled and isOn (mx, my, x, y, w, h) then
			if button.onButtonrReleased then
				button:onButtonrReleased(mx, my, mbutton)
			end
		elseif button.enabled and button.onOtherButtonReleased then
			button:onOtherButtonReleased (mx, my, mbutton)
		end
	end
end

function myButtons.mousemoved (mx, my, dx, dy)
	for i, button in ipairs(myButtons.buttons) do
		local x, y, w, h = button.x, button.y, button.w, button.h
		if button.enabled and isOn (mx, my, x, y, w, h) then
			if button.onButtonHovered then
				button:onButtonHovered(mx, my, dx, dy)
			end
		elseif button.enabled and button.onButtonNotHovered then
			button:onButtonNotHovered(mx, my, dx, dy)
		end
	end
end

function myButtons.draw ()
	for i, button in ipairs(myButtons.buttons) do
		if button.enabled and button.drawButton then
			button:drawButton ()
		elseif button.drawDisabledButton then
			button:drawDisabledButton ()
		end
	end
end

return myButtons

https://github.com/darkfrei/love2d-lua- ... /myButtons