90 lines
1.9 KiB
Lua
90 lines
1.9 KiB
Lua
local utf8 = require("utf8")
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local function backspace(text)
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local byteoffset = utf8.offset(text, -1)
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if byteoffset then
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-- remove the last UTF-8 character.
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-- string.sub operates on bytes rather than UTF-8 characters,
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-- so we couldn't do string.sub(text, 1, -2).
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return string.sub(text, 1, byteoffset - 1)
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end
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return ""
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end
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Prompt = {
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-- defaults for instance variables
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pos = { x = 10, y = 10 },
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input = "",
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name = "input",
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canceled = false,
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closing = false,
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color = {1,1,1,1},
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background_color = {0,0,0,1},
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active_prompt = nil,
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}
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function Prompt:new(o)
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o = o or {}
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setmetatable(o, self)
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self.__index = self
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return o
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end
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function Prompt:keypressed(key, scancode, isrepeat)
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if key == "backspace" then
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self.input = backspace(self.input)
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elseif key == "return" or key == "kpenter" or key == "escape" then
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if key == "escape" then
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self.canceled = true
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end
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self.closing = true
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self:func()
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end
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end
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function Prompt:update()
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end
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function Prompt:textinput(text)
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self.input = self.input .. text
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end
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function Prompt:draw()
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local c1, c2, c3, a = love.graphics.getColor()
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local text = self.name .. ": " .. self.input
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local width = locale_font:getWidth(text)
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local height = locale_font:getHeight(text)
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local margin = 10
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love.graphics.setColor(unpack(self.color))
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love.graphics.rectangle("fill",
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self.pos.x-margin-1,
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self.pos.y-1,
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width+margin*2+2,
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height+margin+2
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)
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love.graphics.setColor(unpack(self.background_color))
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love.graphics.rectangle("fill",
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self.pos.x-margin,
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self.pos.y,
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width+margin*2,
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height+margin
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)
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love.graphics.setColor(unpack(self.color))
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love.graphics.print(text, self.pos.x, self.pos.y)
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love.graphics.setColor(c1,c2,c3,a)
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end
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function Prompt:activate()
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Prompt.active_prompt = self
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love.keyboard.setTextInput(true)
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end
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-- demonstration of how default values work
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local test_prompt = Prompt:new()
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assert(test_prompt.name == "input")
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test_prompt.name = "foobar"
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assert(Prompt.name == "input")
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