Struct CaptchaBuilder

pub struct CaptchaBuilder<'a, 'b> {
    pub width: u32,
    pub height: u32,
    pub length: u32,
    pub source: String,
    pub background_color: Option<Rgba<u8>>,
    pub fonts: &'b [Font<'a>],
    pub max_behind_lines: Option<u32>,
    pub max_front_lines: Option<u32>,
    pub max_ellipse_lines: Option<u32>,
}

Expand description

the builder of captcha

Fields§

§width: u32

captcha image width

§height: u32

captcha image height

§length: u32

random string length.

§source: String

source is a unicode which is the rand string from.

§background_color: Option<Rgba<u8>>

image background color (optional)

§fonts: &'b [Font<'a>]

fonts collection for text

§max_behind_lines: Option<u32>

The maximum number of lines to draw behind of the image

§max_front_lines: Option<u32>

The maximum number of lines to draw in front of the image

§max_ellipse_lines: Option<u32>

The maximum number of ellipse lines to draw in front of the image

Implementations§

impl<'a, 'b> CaptchaBuilder<'a, 'b>

pub fn build(&self) -> ImageResult<Captcha>

build a captcha in png format

pub fn save<P: AsRef<Path>>(&self, path: P) -> ImageResult<String>

build captcha and save in png format

Trait Implementations§

impl<'a, 'b> Default for CaptchaBuilder<'a, 'b>

fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

impl<'a, 'b> Freeze for CaptchaBuilder<'a, 'b>

impl<'a, 'b> RefUnwindSafe for CaptchaBuilder<'a, 'b>

impl<'a, 'b> Send for CaptchaBuilder<'a, 'b>

impl<'a, 'b> Sync for CaptchaBuilder<'a, 'b>

impl<'a, 'b> Unpin for CaptchaBuilder<'a, 'b>

impl<'a, 'b> UnwindSafe for CaptchaBuilder<'a, 'b>

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<Src, Scheme> ApproxFrom<Src, Scheme> for Src
where Scheme: ApproxScheme,

type Err = NoError

The error type produced by a failed conversion.

fn approx_from(src: Src) -> Result<Src, <Src as ApproxFrom<Src, Scheme>>::Err>

Convert the given value into an approximately equivalent representation.

impl<Dst, Src, Scheme> ApproxInto<Dst, Scheme> for Src
where Dst: ApproxFrom<Src, Scheme>, Scheme: ApproxScheme,

type Err = <Dst as ApproxFrom<Src, Scheme>>::Err

The error type produced by a failed conversion.

fn approx_into(self) -> Result<Dst, <Src as ApproxInto<Dst, Scheme>>::Err>

Convert the subject into an approximately equivalent representation.

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T, Dst> ConvAsUtil<Dst> for T

fn approx(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst>,

Approximate the subject with the default scheme.

fn approx_by<Scheme>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst, Scheme>, Scheme: ApproxScheme,

Approximate the subject with a specific scheme.

impl<T> ConvUtil for T

fn approx_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst>,

Approximate the subject to a given type with the default scheme.

fn approx_as_by<Dst, Scheme>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst, Scheme>, Scheme: ApproxScheme,

Approximate the subject to a given type with a specific scheme.

fn into_as<Dst>(self) -> Dst
where Self: Sized + Into<Dst>,

Convert the subject to a given type.

fn try_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + TryInto<Dst>,

Attempt to convert the subject to a given type.

fn value_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + ValueInto<Dst>,

Attempt a value conversion of the subject to a given type.

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Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> Pointable for T

const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> Same for T

type Output = T

Should always be Self

impl<SS, SP> SupersetOf<SS> for SP
where SS: SubsetOf<SP>,

fn to_subset(&self) -> Option<SS>

The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more

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Checks if self is actually part of its subset T (and can be converted to it).

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Use with care! Same as self.to_subset but without any property checks. Always succeeds.

fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.

impl<Src> TryFrom<Src> for Src

type Err = NoError

The error type produced by a failed conversion.

fn try_from(src: Src) -> Result<Src, <Src as TryFrom<Src>>::Err>

Convert the given value into the subject type.

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where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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type Err = <Dst as TryFrom<Src>>::Err

The error type produced by a failed conversion.

fn try_into(self) -> Result<Dst, <Src as TryInto<Dst>>::Err>

Convert the subject into the destination type.

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where U: TryFrom<T>,

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The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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fn vzip(self) -> V

impl<Src> ValueFrom<Src> for Src

type Err = NoError

The error type produced by a failed conversion.

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Convert the given value into an exactly equivalent representation.

impl<Src, Dst> ValueInto<Dst> for Src
where Dst: ValueFrom<Src>,

type Err = <Dst as ValueFrom<Src>>::Err

The error type produced by a failed conversion.

fn value_into(self) -> Result<Dst, <Src as ValueInto<Dst>>::Err>

Convert the subject into an exactly equivalent representation.