Difference between revisions of "love.textinput (简体中文)"
Line 29: | Line 29: | ||
end | end | ||
</source> | </source> | ||
+ | |||
+ | 打印用户输入的文字,并在按下退格键(backspace)时删除一个文字。 | ||
+ | |||
+ | <source lang="lua"> | ||
+ | local utf8 = require("utf8") | ||
+ | |||
+ | function love.load() | ||
+ | text = "Type away! -- " | ||
+ | |||
+ | -- enable key repeat so backspace can be held down to trigger love.keypressed multiple times. | ||
+ | love.keyboard.setKeyRepeat(true) | ||
+ | end | ||
+ | |||
+ | function love.textinput(t) | ||
+ | text = text .. t | ||
+ | end | ||
+ | |||
+ | function love.keypressed(key) | ||
+ | if key == "backspace" then | ||
+ | -- get the byte offset to the last UTF-8 character in the string. | ||
+ | local byteoffset = utf8.offset(text, -1) | ||
+ | |||
+ | if byteoffset then | ||
+ | -- remove the last UTF-8 character. | ||
+ | -- string.sub operates on bytes rather than UTF-8 characters, so we couldn't do string.sub(text, 1, -2). | ||
+ | text = string.sub(text, 1, byteoffset - 1) | ||
+ | end | ||
+ | end | ||
+ | end | ||
+ | |||
+ | function love.draw() | ||
+ | love.graphics.printf(text, 0, 0, love.graphics.getWidth()) | ||
+ | end | ||
+ | </source> | ||
+ | |||
+ | == 其他相关 == | ||
+ | * [[parent::love]] | ||
+ | * [[love.keypressed]] | ||
+ | * [[love.keyboard.setTextInput]] | ||
+ | * [[love.keyboard.hasTextInput]] | ||
+ | * [[utf8]] | ||
+ | * [https://wiki.libsdl.org/Tutorials/TextInput textinput vs keypressed] | ||
+ | [[Category:Callbacks]] | ||
+ | {{#set:Description=Called when text has been entered by the user.}} | ||
+ | {{#set:Subcategory=Keyboard}} | ||
+ | |||
+ | == 其他语言 == | ||
+ | {{i18n|love.textinput}} |
Revision as of 14:48, 18 August 2022
函数
概要
love.textinput( text )
参数
string text
- UTF-8 文本
Returns
无返回
注释
在 Android 和 iOS 上,默认禁用 textinput;调用love.keyboard.setTextInput来启用它。
例子
记录并打印用户输入的文本。
function love.load()
text = "Type away! -- "
end
function love.textinput(t)
text = text .. t
end
function love.draw()
love.graphics.printf(text, 0, 0, love.graphics.getWidth())
end
打印用户输入的文字,并在按下退格键(backspace)时删除一个文字。
local utf8 = require("utf8")
function love.load()
text = "Type away! -- "
-- enable key repeat so backspace can be held down to trigger love.keypressed multiple times.
love.keyboard.setKeyRepeat(true)
end
function love.textinput(t)
text = text .. t
end
function love.keypressed(key)
if key == "backspace" then
-- get the byte offset to the last UTF-8 character in the string.
local byteoffset = utf8.offset(text, -1)
if byteoffset then
-- remove the last UTF-8 character.
-- string.sub operates on bytes rather than UTF-8 characters, so we couldn't do string.sub(text, 1, -2).
text = string.sub(text, 1, byteoffset - 1)
end
end
end
function love.draw()
love.graphics.printf(text, 0, 0, love.graphics.getWidth())
end
其他相关
- love
- love.keypressed
- love.keyboard.setTextInput
- love.keyboard.hasTextInput
- utf8
- textinput vs keypressed
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