Struct ReportEngine 

pub struct ReportEngine { /* private fields */ }

Renders reports. Keep one around: it caches fonts and text measurements.

use ravenrs_report::{Band, Control, Report, ReportEngine};
use serde_json::json;

let report = Report::new("Hello").detail(Band::new(20.0).control(Control::field("[Name]").at(0.0, 0.0, 200.0, 20.0)));
let doc = ReportEngine::new().render(&report, &json!([{ "Name": "Ana" }, { "Name": "Bruno" }]));
assert_eq!(doc.pages.len(), 1);
assert!(doc.page_contains(0, "Bruno"));

Implementations

impl ReportEngine

pub fn new() -> Self

An engine with the embedded Inter font.

pub fn register_function( &mut self, name: &str, function: impl Fn(&[Value]) -> Result<Value, String> + 'static, )

Adds a function to the expressions of every report this engine renders.

pub fn render(&mut self, report: &Report, data: &Json) -> Document

Renders report over data with default parameters.

pub fn count_rows( &self, report: &Report, data: &Json, options: &RenderOptions, ) -> usize

How many rows of data the report would print: after its data member and filter, before grouping. Lets a scheduled job skip a report with nothing in it.

pub fn render_with( &mut self, report: &Report, data: &Json, options: &RenderOptions, ) -> Document

Renders report over data. Expression errors do not stop the render: they are listed in Document::errors and shown in place.

pub fn text_system(&mut self) -> &mut TextSystem

The text system used for measuring, to paint documents with the same metrics.

Trait Implementations

impl Debug for ReportEngine

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ReportEngine

fn default() -> Self

Returns the “default value” for a type.