Struct easy_captcha::captcha::arithmetic::ArithmeticCaptcha

pub struct ArithmeticCaptcha { /* private fields */ }

算数验证码

Implementations

impl ArithmeticCaptcha

pub fn alphas(&mut self) -> Vec<char>

生成一个算式

Generate a new arithmetic problem.

pub fn get_arithmetic_string(&mut self) -> String

获取算式的字符串

Get the String of the arithmetic problem

pub fn set_difficulty(&mut self, difficulty: usize)

设置算术的难度；默认值为10

Set the difficulty of the arithmetic problem; default as 10.

pub fn support_algorithm_sign(&mut self, algorithm_sign: usize)

设置包含的算术符号。可选2~5，难度依次由低到高（加-减-乘-除）

Set the arithmetic symbol used in the arithmetic problem; Available from 2 to 5, which includes Plus, Minus, Multiply and Divide.

Trait Implementations

impl AbstractCaptcha for ArithmeticCaptcha

type Error = EncodingError

错误类型

fn out(&mut self, out: impl Write) -> Result<(), Self::Error>

输出验证码到指定位置

fn get_chars(&mut self) -> Vec<char>

获取验证码中的字符（即正确答案）

fn base64(&mut self) -> Result<String, Self::Error>

输出Base64编码。注意，返回值会带编码头（例如data:image/png;base64,），可以直接在浏览器中显示；如不需要编码头， 请使用base64_with_head方法并传入空参数以去除编码头。

fn get_content_type(&mut self) -> String

获取验证码的MIME类型

fn base64_with_head(&mut self, head: &str) -> Result<String, Self::Error>

输出Base64编码（指定编码头）

impl NewCaptcha for ArithmeticCaptcha

fn new() -> Self

用默认参数初始化

fn with_size(width: i32, height: i32) -> Self

使用输出图像大小初始化

fn with_size_and_len(width: i32, height: i32, len: usize) -> Self

使用输出图像大小和验证码字符长度初始化

fn with_all( width: i32, height: i32, len: usize, font: CaptchaFont, font_size: f32 ) -> Self

使用完整的参数来初始化，包括输出图像大小、验证码字符长度和输出字体及其大小