Struct qrcode::render::Renderer

pub struct Renderer<'a, P: Pixel> { /* private fields */ }

A QR code renderer. This is a builder type which converts a bool-vector into an image.

Implementations

impl<'a, P: Pixel> Renderer<'a, P>

pub fn new( content: &'a [Color], modules_count: usize, quiet_zone: u32 ) -> Renderer<'a, P>

Creates a new renderer.

Panics

Panics if the length of content is not exactly modules_count * modules_count.

pub fn dark_color(&mut self, color: P) -> &mut Self

Sets color of a dark module. Default is opaque black.

pub fn light_color(&mut self, color: P) -> &mut Self

Sets color of a light module. Default is opaque white.

pub fn quiet_zone(&mut self, has_quiet_zone: bool) -> &mut Self

Whether to include the quiet zone in the generated image.

pub fn module_size(&mut self, width: u32) -> &mut Self

👎Deprecated since 0.4.0: use .module_dimensions(width, width) instead

Sets the size of each module in pixels. Default is 8px.

pub fn module_dimensions(&mut self, width: u32, height: u32) -> &mut Self

Sets the size of each module in pixels. Default is 8×8.

pub fn min_width(&mut self, width: u32) -> &mut Self

👎Deprecated since 0.4.0: use .min_dimensions(width, width) instead

pub fn min_dimensions(&mut self, width: u32, height: u32) -> &mut Self

Sets the minimum total image size in pixels, including the quiet zone if applicable. The renderer will try to find the dimension as small as possible, such that each module in the QR code has uniform size (no distortion).

For instance, a version 1 QR code has 19 modules across including the quiet zone. If we request an image of size ≥200×200, we get that each module’s size should be 11×11, so the actual image size will be 209×209.

pub fn max_dimensions(&mut self, width: u32, height: u32) -> &mut Self

Sets the maximum total image size in pixels, including the quiet zone if applicable. The renderer will try to find the dimension as large as possible, such that each module in the QR code has uniform size (no distortion).

For instance, a version 1 QR code has 19 modules across including the quiet zone. If we request an image of size ≤200×200, we get that each module’s size should be 10×10, so the actual image size will be 190×190.

The module size is at least 1×1, so if the restriction is too small, the final image can be larger than the input.

pub fn to_image(&self) -> P::Image

👎Deprecated since 0.4.0: renamed to .build() to de-emphasize the image connection

Renders the QR code into an image.

pub fn build(&self) -> P::Image

Renders the QR code into an image.