Struct LaTeXImages 

pub struct LaTeXImages { /* private fields */ }

LaTeX image generation processor.

Port of LaTeXML::Post::LaTeXImages.

Implementations

impl LaTeXImages

pub fn new( resource_directory: &str, resource_prefix: &str, image_type: &str, ) -> Self

pub fn clean_tex(tex: &str) -> String

Clean a TeX string for image generation.

Port of LaTeXImages::cleanTeX.

pub fn set_tex_image( node: &mut Node, path: &str, width: u32, height: u32, depth: Option<u32>, )

Set the image attributes on a node.

Port of LaTeXImages::setTeXImage.

pub fn generate_images( &self, doc: &mut PostDocument, nodes: &[Node], extract_tex: &dyn Fn(&PostDocument, &Node) -> Option<String>, ) -> Result<(), PostError>

Generate images for the given nodes.

Port of LaTeXImages::generateImages. This is the main pipeline entry point.

pub fn dvi_command(&self) -> String

Get the DVI command string.

pub fn parse_log_dimensions(log_content: &str) -> Vec<Option<(f64, f64, f64)>>

Parse LXIMAGE dimension lines from a LaTeX log file.

Port of the log parsing in generateImages. Each line has format: LXIMAGE N = Wpt x Hpt + Dpt Returns a vector indexed by image number: (width_pt, height_pt, depth_pt).

pub fn output_filename(&self, index: u32) -> String

Compute the output filename for a given image index.

Port of sprintf($$self{dvicmd_output_name}, $index).

pub fn output_type(&self) -> &str

Get the output image type for the DVI method.

pub fn needs_frame_output(&self) -> bool

Whether the DVI output needs frame-based cropping.

pub fn pt_to_pixels(&self, pt: f64) -> f64

Convert TeX points to pixels at the configured DPI and magnification.

pub fn can_process(&self) -> bool

Check whether this processor has the needed external tools.

Port of LaTeXImages::canProcess. Checks for:

• Image processing library (ImageMagick or similar)
• LaTeX command availability

pub fn convert_image(&self, src: &str, dest: &str) -> Option<(u32, u32)>

Convert a DVI-output image (EPS/PNG) to final format with cropping.

Port of LaTeXImages::convert_image. For dvipng output: already cropped, just copy. For dvips output (EPS): needs ImageMagick conversion + trim. For dvisvgm output (SVG): already in final format.

Returns (width, height) in pixels, or None on failure.

pub fn pixels_per_pt(&self) -> f64

Compute pixels-per-point for dimension conversions.

Trait Implementations

impl Processor for LaTeXImages

fn get_name(&self) -> &str

Human-readable name for this processor.

fn resource_directory(&self) -> Option<&str>

Resource directory for generated resources (images, etc.).

fn resource_prefix(&self) -> Option<&str>

Resource prefix for generated resource filenames.

fn process(&mut self, doc: PostDocument, nodes: Vec<Node>) -> ProcessResult

Process the document given the nodes returned by to_process. Returns the resulting document(s) — splitting may produce multiple.

fn to_process(&self, doc: &PostDocument) -> Vec<Node>

Return the nodes to be processed; by default the document element. This allows processors to focus on specific kinds of nodes, or to skip processing if there are none to process.

fn desired_resource_pathname( &self, _doc: &PostDocument, _node: &Node, _source: Option<&str>, _type_ext: Option<&str>, ) -> Option<PathBuf>

Hint for a desired resource pathname.

fn generate_resource_pathname( &self, doc: &mut PostDocument, _node: &Node, _source: Option<&str>, type_ext: Option<&str>, ) -> PathBuf

Auto-generate a unique resource pathname using a counter from the doc cache.