79 lines
2.3 KiB
Lua
79 lines
2.3 KiB
Lua
-- This file is part of SUIT, copyright (c) 2016 Matthias Richter
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local BASE = (...):match('(.-)[^%.]+$')
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local core = require(BASE .. 'core')
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local utf8 = require 'utf8'
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local function split(str, pos)
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local offset = utf8.offset(str, pos) or 0
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return str:sub(1, offset-1), str:sub(offset)
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end
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return function(input, ...)
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local font = love.graphics.getFont()
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local opt, x,y,w,h = core.getOptionsAndSize(...)
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opt.id = opt.id or input
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opt.font = opt.font or love.graphics.getFont()
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w = w or opt.font:getWidth(text) + 4
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h = h or opt.font:getHeight() + 4
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input.text = input.text or ""
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input.cursor = math.max(1, math.min(utf8.len(input.text)+1, input.cursor or utf8.len(input.text)+1))
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-- cursor is position *before* the character (including EOS) i.e. in "hello":
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-- position 1: |hello
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-- position 2: h|ello
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-- ...
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-- position 6: hello|
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core.registerHitbox(opt.id, x,y,w,h)
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core.grabKeyboardFocus(opt.id)
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opt.hasKeyboardFocus = core.hasKeyboardFocus(opt.id)
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if opt.hasKeyboardFocus then
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local keycode,char = core.getPressedKey()
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-- text input
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if char ~= "" then
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local a,b = split(input.text, input.cursor)
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input.text = table.concat{a, char, b}
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input.cursor = input.cursor + 1
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end
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-- text editing
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if keycode == 'backspace' then
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local a,b = split(input.text, input.cursor)
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input.text = table.concat{split(a,utf8.len(a)), b}
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input.cursor = math.max(1, input.cursor-1)
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elseif keycode == 'delete' then
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local a,b = split(input.text, input.cursor)
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local _,b = split(b, 2)
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input.text = table.concat{a, b}
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end
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-- cursor movement
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if keycode =='left' then
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input.cursor = math.max(0, input.cursor-1)
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elseif keycode =='right' then -- cursor movement
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input.cursor = math.min(utf8.len(input.text)+1, input.cursor+1)
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elseif keycode =='home' then -- cursor movement
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input.cursor = 1
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elseif keycode =='end' then -- cursor movement
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input.cursor = utf8.len(input.text)+1
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end
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-- mouse cursor position
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-- TODO
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end
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core.registerDraw(core.theme.Input, input, opt, x,y,w,h)
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return {
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id = opt.id,
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hit = core.mouseReleasedOn(opt.id),
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submitted = core.keyPressedOn(opt.id, "return"),
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hovered = core.isHot(opt.id),
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entered = core.isHot(opt.id) and not core.wasHot(opt.id),
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left = not core.isHot(opt.id) and core.wasHot(opt.id)
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}
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end
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