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108 lines
3.3 KiB
Rust
108 lines
3.3 KiB
Rust
//! DrawCraft PDF export and import.
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//!
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//! - [`export`] writes one PDF page per artboard with `krilla`: vector paths (fills, strokes with
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//! caps/joins/miter/dashes, non-zero/even-odd), opacity and blend modes (transparency groups),
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//! clip groups, linear/radial gradients (shadings), embedded images and text as outlined glyph
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//! paths. Hidden objects, guides and template layers are skipped.
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//! - [`import`] reads PDF (and PDF-compatible `.ai`) pages with `hayro-interpret` into a
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//! [`Document`]: one artboard and one layer per page, paths with fill/stroke, clip groups,
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//! transparency groups, axial/radial shadings → gradients, images (JPEG passthrough, others
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//! re-encoded as PNG) and text as glyph outlines.
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#![forbid(unsafe_code)]
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mod export;
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mod import;
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pub use export::{export, export_with_report};
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pub use import::{import, import_with_report};
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use drawcraft_doc::Document;
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/// PDF standard / version to target.
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#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
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pub enum Compatibility {
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/// Acrobat 5 (PDF 1.4).
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Pdf14,
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/// Acrobat 6 (PDF 1.5).
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Pdf15,
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/// Acrobat 7 (PDF 1.6).
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Pdf16,
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/// Acrobat 8+ (PDF 1.7). The default.
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#[default]
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Pdf17,
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/// PDF 2.0.
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Pdf20,
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/// PDF/A-2b (archival; validated by krilla).
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PdfA2b,
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/// PDF/X-4 — not supported by the writer yet; export returns [`PdfError::Unsupported`].
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PdfX4,
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}
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/// Export options.
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#[derive(Clone, Debug)]
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pub struct PdfOptions {
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/// 0-based artboard indices to export, in page order; `None` = all artboards.
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pub artboards: Option<Vec<usize>>,
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pub compatibility: Compatibility,
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/// Compress content streams (Flate).
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pub compress: bool,
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/// Document title for the metadata; `None` = the document's title.
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pub title: Option<String>,
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/// Creation date as Unix seconds (UTC); `None` = now (native) / omitted (wasm). PDF/A needs a date.
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pub created: Option<i64>,
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}
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impl Default for PdfOptions {
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fn default() -> Self {
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Self { artboards: None, compatibility: Compatibility::Pdf17, compress: true, title: None, created: None }
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}
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}
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/// Import options.
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#[derive(Clone, Debug)]
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pub struct ImportOptions {
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/// Import at most this many pages (from the first); `None` = all pages.
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pub max_pages: Option<usize>,
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/// Horizontal gap in points between the artboards created for consecutive pages.
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pub artboard_gap: f64,
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}
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impl Default for ImportOptions {
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fn default() -> Self {
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Self { max_pages: None, artboard_gap: 36.0 }
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}
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}
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/// Result of an import with non-fatal warnings (unsupported features, skipped content).
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#[derive(Clone, Debug)]
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pub struct ImportReport {
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pub document: Document,
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pub warnings: Vec<String>,
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}
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/// Result of an export with non-fatal warnings (features approximated or dropped).
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#[derive(Clone, Debug)]
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pub struct ExportReport {
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pub bytes: Vec<u8>,
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pub warnings: Vec<String>,
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}
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#[derive(Debug, thiserror::Error, PartialEq)]
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pub enum PdfError {
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#[error("the document has no artboards")]
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NoArtboards,
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#[error("artboard {0} does not exist")]
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BadArtboard(usize),
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#[error("unsupported: {0}")]
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Unsupported(String),
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#[error("PDF writer error: {0}")]
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Write(String),
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#[error("cannot read PDF: {0}")]
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Parse(String),
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#[error("the PDF has no pages")]
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NoPages,
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}
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#[cfg(test)]
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mod tests;
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