graphics.lua

button = {
    bkgColor = colors.blue,
    tColor = colors.white,
    text = "Text",
    w = 6,
    h = 3,
    textx = 1,
    texty = 1,
    x = 2,
    y = 2,
    visible = false,

    trigger = function()
        print("Default trigger function. :)")
    end,

    new = function(self)
        local new = {}
        setmetatable(new, {__index = self})
        return new
    end,

    detect = function(self, x, y, trig)
        if self.visible then
            if x >= self.x and x <= (self.x + self.w) and y >= self.y and y <= (self.y + self.h) then
                if trig then
                    self.trigger()
                end
                return true
            end
        end
    end,

    draw = function(self)
        local x = self.x
        local y = self.y
        local bkgColor = self.bkgColor
        local tColor = self.tColor
        local text = self.text
        local w = self.w
        local h = self.h
        local textx = self.textx
        local texty = self.texty
        local tColor = self.tColor
        local oldBkgColor = term.getBackgroundColor()
        local oldTColor = term.getTextColor()
        term.setBackgroundColor(bkgColor)
        term.setTextColor(tColor)
        term.setCursorPos(x, y)
        for i=0, h do
            for i=0, w - 1 do
                term.write(" ")
            end
            term.setCursorPos(x, y + i)
        end
        term.setCursorPos(x + textx, y + texty)
        term.setTextColor(tColor)
        term.write(text)
        term.setBackgroundColor(oldBkgColor)
        term.setTextColor(oldTColor)
        self.visible = true
        return true
    end
}

label = {
    bkgColor = colors.black,
    tColor = colors.white,
    text = "Label",
    x = 2,
    y = 2,

    new = function(self)
        local new = {}
        setmetatable(new, {__index = self})
        return new
    end,

    draw = function(self)
        local bkgColor = self.bkgColor
        local tColor = self.tColor
        local text = self.text
        local x = self.x
        local y = self.y
        local oldBkgColor = term.getBackgroundColor()
        local oldTColor = term.getTextColor()
        term.setCursorPos(x, y)
        term.setBackgroundColor(bkgColor)
        term.setTextColor(tColor)
        term.write(text)
        term.setBackgroundColor(oldBkgColor)
        term.setTextColor(oldTColor)
        return true
    end,

    drawCentered = function(self, xoff)
        local bkgColor = self.bkgColor
        local tColor = self.tColor
        local text = self.text
        local termw, termh = term.getSize()
        local oldBkgColor = term.getBackgroundColor()
        local oldTColor = term.getTextColor()

        local x = termw / 2 - #text / 2
        if type(xoff) == "number" then
            x = x + xoff
        end
        term.setCursorPos(x, self.y)
        term.setBackgroundColor(bkgColor)
        term.setTextColor(tColor)
        term.write(text)
        term.setBackgroundColor(oldBkgColor)
        term.setTextColor(oldTColor)
        return true
    end,

    drawCornered = function(self, horcorner, vercorner)
        local bkgColor = self.bkgColor
        local tColor = self.tColor
        local text = self.text
        local x = self.x
        local y = self.y
        local oldBkgColor = term.getBackgroundColor()
        local oldTColor = term.getTextColor()
        local w, h = term.getSize()

        if vercorner == "top" then
            if horcorner == "left" then
                local termx, termy = 1, 1
                term.setCursorPos(termx, termy)
                term.setBackgroundColor(bkgColor)
                term.setTextColor(tColor)
                term.write(text)
                term.setBackgroundColor(oldBkgColor)
                term.setTextColor(oldTColor)
                return true
            elseif horcorner == "right" then
                local termx = w - #text + 1
                local termy = 1
                term.setCursorPos(termx, termy)
                term.setBackgroundColor(bkgColor)
                term.setTextColor(tColor)
                term.write(text)
                term.setBackgroundColor(oldBkgColor)
                term.setTextColor(oldTColor)
                return true
            end
            return false
        elseif vercorner == "bottom" then
            if horcorner == "left" then
                local termx = 1
                local termy = h
                term.setCursorPos(termx, termy)
                term.setBackgroundColor(bkgColor)
                term.setTextColor(tColor)
                term.write(text)
                term.setBackgroundColor(oldBkgColor)
                term.setTextColor(oldTColor)
                return true
            elseif horcorner == "right" then
                local termx = w - #text + 1
                local termy = h
                term.setCursorPos(termx, termy)
                term.setBackgroundColor(bkgColor)
                term.setTextColor(tColor)
                term.write(text)
                term.setBackgroundColor(oldBkgColor)
                term.setTextColor(oldTColor)
                return true
            end
            return false
        end
        return false
    end
}

checkbox = {
    text = "Check Box",
    x = 2,
    y = 2,
    checked = false,
    bkgColor = colors.black,
    w = 0,
    h = 0,

    new = function(self)
        local new = {}
        setmetatable(new, {__index = self})
        return new
    end,

    draw = function(self)
        local bkgColor = self.bkgColor
        local text = self.text
        local x = self.x
        local y = self.y
        term.setCursorPos(x, y)
        if self.checked == false then
            term.setBackgroundColor(colors.gray)
            term.write(" ")
        else
            term.setBackgroundColor(colors.blue)
            term.write(" ")
        end
        term.setBackgroundColor(bkgColor)
        term.write(" ")
        term.write(text)
        w = 2 + string.len(text)
        h = 1
    end,

    trigger = function()
        print("Default trigger function. :)")
    end,

    detect = function(self, x, y, trig)
        if x >= self.x and x <= (self.x + self.w) and y >= self.y and y <= (self.y + self.h) then
            if self.checked == false then
                self.checked = true
                self:draw()
                if trig then
                    self.trigger()
                end
            else
                self.checked = false
                self:draw()
                if trig then
                    self.trigger()
                end
            end
        end
    end,
}

backgroundimg = {
    path = "",

    new = function(self)
        local new = {}
        setmetatable(new, {__index = self})
        return new
    end,

    draw = function(self)
        local image = paintutils.loadImage(self.path)
        paintutils.drawImage(image, 1, 1)
    end
}

textinput = {
    bkgColor = colors.white,
    tColor = colors.black,
    phColor = colors.gray,
    x = 2,
    y = 2,
    text = "",
    placeholder = "",
    pwdchar = nil,
    w = 10,

    new = function(self)
        local new = {}
        setmetatable(new, {__index = self})
        return new
    end,

    draw = function(self)
        term.setCursorPos(self.x, self.y)
        term.setBackgroundColor(self.bkgColor)
        term.setTextColor(self.phColor)
        for i=1, self.w do
            term.write(" ")
        end
        term.setCursorPos(self.x, self.y)
        term.write(self.placeholder)
        return true
    end,

    detect = function(self, x, y)
        if x >= self.x and x <= (self.x + self.w) and y == self.y then
            term.setCursorPos(self.x, self.y)
            term.setBackgroundColor(self.bkgColor)
            term.setTextColor(self.tColor)
            for i=1, self.w do
                term.write(" ")
            end
            term.setCursorPos(self.x, self.y)
            self.text = self.pwdchar ~= nil and read(self.pwdchar) or read()
        end
    end

}

function fillScreen(color)
    term.clear()
    term.setCursorPos(1, 1)
    local w, h = term.getSize()
    paintutils.drawFilledBox(1, 1, w, h, color)
end