Struct captcha_a::CaptchaBuilder

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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

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

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

build a captcha in png format

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

build captcha and save in png format

Trait Implementations

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

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fn default() -> Self

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

Auto Trait Implementations

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>where
'a: 'b,

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

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<Src, Scheme> ApproxFrom<Src, Scheme> for Srcwhere
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 Srcwhere
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.

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

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: ApproxInto<Dst, DefaultApprox>,

Approximate the subject with the default scheme.

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

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

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

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

fn into_as<Dst>(self) -> Dstwhere
Self: Into<Dst>,

Convert the subject to a given type.

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

Attempt to convert the subject to a given type.

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

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

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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 = mem::align_of::<T>()

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

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impl<T> Same<T> for T

type Output = T

Should always be Self

impl<SS, SP> SupersetOf<SS> for SPwhere
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

fn is_in_subset(&self) -> bool

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

fn to_subset_unchecked(&self) -> SS

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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impl<T, U> TryFrom for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

impl<Src, Dst> TryInto<Dst> for Srcwhere
Dst: TryFrom<Src>,

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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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

impl<V, T> VZip<V> for Twhere
V: MultiLane<T>,

fn vzip(self) -> V

impl<Src> ValueFrom<Src> for Src

type Err = NoError

The error type produced by a failed conversion.

fn value_from(src: Src) -> Result<Src, <Src as ValueFrom<Src>>::Err>

Convert the given value into an exactly equivalent representation.

impl<Src, Dst> ValueInto<Dst> for Srcwhere
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.

Struct captcha_a::CaptchaBuilder

Fields

Implementations

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

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

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

Trait Implementations

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

fn default() -> Self

Auto Trait Implementations

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>where 'a: 'b,

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

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

type Err = NoError

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

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

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

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

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

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

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

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

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

impl<T> ConvUtil for T

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

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

fn into_as<Dst>(self) -> Dstwhere Self: Into<Dst>,

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

type Init = T

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

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

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

unsafe fn drop(ptr: usize)

impl<T> Same<T> for T

type Output = T

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

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

fn is_in_subset(&self) -> bool

fn to_subset_unchecked(&self) -> SS

fn from_subset(element: &SS) -> SP

impl<Src> TryFrom<Src> for Src

type Err = NoError

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

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

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

impl<Src, Dst> TryInto<Dst> for Srcwhere Dst: TryFrom<Src>,

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

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

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

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

impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

fn vzip(self) -> V

impl<Src> ValueFrom<Src> for Src

type Err = NoError

fn value_from(src: Src) -> Result<Src, <Src as ValueFrom<Src>>::Err>

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

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

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

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

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

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

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

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

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

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

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

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

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

fn into_as<Dst>(self) -> Dstwhere
Self: Into<Dst>,

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

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

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

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

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<Src, Dst> TryInto<Dst> for Srcwhere
Dst: TryFrom<Src>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

impl<V, T> VZip<V> for Twhere
V: MultiLane<T>,

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