66a089a07f
1) [input.lua] Pressing backspace while the cursor was at the beggining of the text removed the first character. Fixed thanks to riidom. 2) [LÖVE 0.9] Use setLine(Width|Style) instead of setLine. Split keyboard.pressed() into keyboard.pressed() and keyboard.textinput(). (see readme) 3) [utf8.lua] Add support for UTF-8 text editing. May still fail spectacurlarly with invalid UTF-8 strings.
80 lines
3.3 KiB
Lua
80 lines
3.3 KiB
Lua
--[[
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Copyright (c) 2012 Matthias Richter
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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Except as contained in this notice, the name(s) of the above copyright holders
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shall not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization.
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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,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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]]--
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local BASE = (...):match("(.-)[^%.]+$")
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local core = require(BASE .. 'core')
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local group = require(BASE .. 'group')
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local mouse = require(BASE .. 'mouse')
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local keyboard = require(BASE .. 'keyboard')
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local utf8 = require(BASE .. 'utf8')
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-- {info = {text = "", cursor = text:len()}, pos = {x, y}, size={w, h}, widgetHit=widgetHit, draw=draw}
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return function(w)
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assert(type(w) == "table" and type(w.info) == "table", "Invalid argument")
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w.info.text = w.info.text or ""
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w.info.cursor = math.min(w.info.cursor or w.info.text:len(), w.info.text:len())
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local id = w.id or core.generateID()
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local pos, size = group.getRect(w.pos, w.size)
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mouse.updateWidget(id, pos, size, w.widgetHit)
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keyboard.makeCyclable(id)
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if mouse.isActive(id) then keyboard.setFocus(id) end
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if not keyboard.hasFocus(id) then
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--[[nothing]]
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-- editing
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elseif keyboard.key == 'backspace' and w.info.cursor > 0 then
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w.info.cursor = math.max(0, w.info.cursor-1)
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local left, right = utf8.split(w.info.text, w.info.cursor)
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w.info.text = left .. utf8.sub(right, 2)
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elseif keyboard.key == 'delete' then
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local left, right = utf8.split(w.info.text, w.info.cursor)
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w.info.text = left .. utf8.sub(right, 2)
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w.info.cursor = math.min(w.info.text:len(), w.info.cursor)
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-- movement
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elseif keyboard.key == 'left' then
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w.info.cursor = math.max(0, w.info.cursor-1)
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elseif keyboard.key == 'right' then
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w.info.cursor = math.min(w.info.text:len(), w.info.cursor+1)
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elseif keyboard.key == 'home' then
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w.info.cursor = 0
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elseif keyboard.key == 'end' then
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w.info.cursor = w.info.text:len()
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-- info
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elseif keyboard.key == 'return' then
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keyboard.clearFocus()
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keyboard.pressed('', -1)
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elseif keyboard.str then
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local left, right = utf8.split(w.info.text, w.info.cursor)
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w.info.text = left .. keyboard.str .. right
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w.info.cursor = w.info.cursor + 1
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end
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core.registerDraw(id, w.draw or core.style.Input,
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w.info.text, w.info.cursor, pos[1],pos[2], size[1],size[2])
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return mouse.releasedOn(id) or keyboard.pressedOn(id, 'return')
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end
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