549 lines
27 KiB
Rust
549 lines
27 KiB
Rust
//! `document.open`: every readable format into a new document.
|
||
|
||
use std::io::Cursor;
|
||
|
||
use serde_json::{Value, json};
|
||
use vectorcraft_doc::{Document, ImageBlob, ImageObject, Node, NodeKind};
|
||
use vectorcraft_geom::Affine;
|
||
|
||
use super::super::*;
|
||
use super::pdfimport::LoadOptions;
|
||
use super::{Format, SAVE_FORMATS, absolute_path, file_stamp, format, format_for_name, psdread, read_file};
|
||
use crate::cmd::links::Resolved;
|
||
use crate::{EngineError, Prefs};
|
||
|
||
/// A file read into a document, with its format and non-fatal import notes.
|
||
pub struct Loaded {
|
||
pub doc: Document,
|
||
pub format: &'static Format,
|
||
pub warnings: Vec<String>,
|
||
/// The document is the native one the file carries (SVG or PDF saved with Preserve Editing).
|
||
pub restored: bool,
|
||
/// An older native file (the former `.drawcraft` name or format version): saving it again
|
||
/// rewrites it in today's format.
|
||
pub converted: bool,
|
||
/// Only a stand-in picture of the file (an Affinity document whose native data couldn't be
|
||
/// read): Open shows it with its warning; Place, templates and libraries refuse it.
|
||
pub preview_only: bool,
|
||
}
|
||
|
||
impl Loaded {
|
||
/// The file with the grid of Preferences › Guides & Grid, unless it is a native document (also
|
||
/// one that an SVG, PDF, `.ai` or EPS file carries, `restored`), which keeps the grid it was
|
||
/// saved with.
|
||
pub(crate) fn with_grid_prefs(mut self, prefs: &Prefs) -> Self {
|
||
if !self.restored && !matches!(self.format.id, "vectorcraft" | "template") {
|
||
self.doc.grid = prefs.grid();
|
||
}
|
||
self
|
||
}
|
||
}
|
||
|
||
/// An image ready to embed: PNG/JPEG/GIF/WebP keep their bytes, other formats are stored as PNG
|
||
/// (what browsers, PDF and SVG viewers show).
|
||
pub struct RasterImage {
|
||
/// Content key for `Document::images` (identical files share one blob).
|
||
pub key: String,
|
||
pub blob: ImageBlob,
|
||
pub width: u32,
|
||
pub height: u32,
|
||
/// The resolution the file declares (see [`super::ppi::resolution`]).
|
||
pub ppi: Option<(f64, f64)>,
|
||
}
|
||
|
||
pub(super) fn err(e: impl std::fmt::Display) -> EngineError {
|
||
EngineError::Other(e.to_string())
|
||
}
|
||
|
||
/// The last component of a path or file name.
|
||
pub fn file_name(name: &str) -> String {
|
||
std::path::Path::new(name).file_name().map(|n| n.to_string_lossy().to_string()).unwrap_or_else(|| name.to_string())
|
||
}
|
||
|
||
/// The readable format of a file: from its content (magic bytes) when that tells, else from the
|
||
/// extension of `name`.
|
||
pub fn detect(name: &str, bytes: &[u8]) -> Option<&'static Format> {
|
||
let by_name = format_for_name(name).filter(|f| f.read);
|
||
if vectorcraft_affinity::is_affinity(bytes) {
|
||
return format("affinity");
|
||
}
|
||
if vectorcraft_format::sniff(bytes) {
|
||
// A template keeps its meaning from the extension, like .ait.
|
||
return by_name.filter(|f| f.id == "template").or_else(|| format("vectorcraft"));
|
||
}
|
||
if vectorcraft_svg::is_svgz(bytes) {
|
||
return format("svgz");
|
||
}
|
||
if vectorcraft_pdf::is_postscript(bytes) {
|
||
// PostScript (.eps, and .ai saved without PDF compatibility) by any name; .ai and .ait
|
||
// keep their meaning (a template), read as PostScript all the same.
|
||
return by_name.filter(|f| matches!(f.id, "ai" | "ait")).or_else(|| format("eps"));
|
||
}
|
||
if bytes.starts_with(b"%PDF") {
|
||
// .ai and .ait files are PDF inside; the extension keeps the template meaning.
|
||
return by_name.filter(|f| matches!(f.id, "ai" | "ait")).or_else(|| format("pdf"));
|
||
}
|
||
if vectorcraft_cad::is_dxf(bytes) {
|
||
return format("dxf");
|
||
}
|
||
if let Some(kind) = vectorcraft_metafile::sniff(bytes) {
|
||
return format(kind.id());
|
||
}
|
||
if psdread::is_psd(bytes) {
|
||
return format(if psdread::is_psb(bytes) { "psb" } else { "psd" });
|
||
}
|
||
if let Some(f) = image::guess_format(bytes).ok().and_then(image_format) {
|
||
return Some(f);
|
||
}
|
||
if clipboard::looks_like_svg(&String::from_utf8_lossy(&bytes[..bytes.len().min(4096)])) {
|
||
return format("svg");
|
||
}
|
||
by_name
|
||
}
|
||
|
||
/// The readable raster format behind an `image` crate format.
|
||
fn image_format(f: image::ImageFormat) -> Option<&'static Format> {
|
||
f.extensions_str().iter().find_map(|e| format(e)).filter(|f| f.read && f.raster)
|
||
}
|
||
|
||
/// Why a file carrying editing data (an SVG or PDF saved with Preserve Editing) opened as plain
|
||
/// artwork: it was changed in another app after it was saved.
|
||
pub const EDITING_STALE: &str = "this file was changed in another app after it was saved with its editing data: it opened as plain artwork";
|
||
/// Why a file carrying editing data opened as plain artwork: the data can't be read.
|
||
pub const EDITING_DAMAGED: &str = "this file's editing data can't be read: it opened as plain artwork";
|
||
|
||
/// Preserve Editing, for every format that carries the native document: that document when the
|
||
/// file around it is unchanged (`editing`: whether it is, and how to get the document's bytes) and
|
||
/// it reads, else `import()`'s document with a first warning saying why the editing data wasn't
|
||
/// used → (document, warnings, restored).
|
||
fn restore_or_import(
|
||
editing: Option<(bool, impl FnOnce() -> Option<Vec<u8>>)>,
|
||
import: impl FnOnce() -> Result<(Document, Vec<String>)>,
|
||
) -> Result<(Document, Vec<String>, bool)> {
|
||
let mut fallback = None;
|
||
if let Some((intact, bytes)) = editing {
|
||
let native = if intact { bytes() } else { None };
|
||
match native.and_then(|b| native_file(&b).ok()) {
|
||
Some((doc, _, warnings)) => return Ok((doc, warnings, true)),
|
||
None => fallback = Some(if intact { EDITING_DAMAGED } else { EDITING_STALE }),
|
||
}
|
||
}
|
||
let (doc, mut warnings) = import()?;
|
||
if let Some(why) = fallback {
|
||
warnings.insert(0, why.to_string());
|
||
}
|
||
Ok((doc, warnings, false))
|
||
}
|
||
|
||
/// A native file's document and details, the colour profiles it carries installed where missing
|
||
/// (with a warning for each that can't be used).
|
||
pub(crate) fn native_file(bytes: &[u8]) -> Result<(Document, vectorcraft_format::FileInfo, Vec<String>)> {
|
||
let f = vectorcraft_format::load_file(bytes).map_err(err)?;
|
||
let mut warnings = super::native::install_profiles(f.profiles);
|
||
warnings.extend(f.depth_notes);
|
||
Ok((f.doc, f.info, warnings))
|
||
}
|
||
|
||
/// Read a file of any readable format (`name`: its file name or path, for the extension and title;
|
||
/// a path's folder is where an SVG's relative image links are found).
|
||
pub fn load(name: &str, bytes: &[u8]) -> Result<Loaded> {
|
||
load_with(name, bytes, &LoadOptions::default())
|
||
}
|
||
|
||
/// A PDF-compatible `.ai`, or a PDF saved with the editing data, read through the editor's own copy
|
||
/// of its art, which it carries: its layers and hidden objects as they were, and the art outside
|
||
/// its artboard (its PDF part has only what is on the artboards), as an EPS of the editor is read.
|
||
/// Anything else as it was.
|
||
fn through_editing_data(bytes: &[u8], opts: &LoadOptions, doc: Document, warnings: Vec<String>) -> (Document, Vec<String>) {
|
||
if opts.pages.is_some() || !opts.layers || !opts.editing_data {
|
||
return (doc, warnings);
|
||
}
|
||
let Some(private) = vectorcraft_pdf::illustrator_data(bytes, opts.password.as_deref()) else { return (doc, warnings) };
|
||
let outlined = opts.text_as == vectorcraft_pdf::TextAs::Outlines;
|
||
let (doc, mut warnings, read) = vectorcraft_eps::layered_ai(&private, doc, warnings, outlined, opts.trust_editing_data);
|
||
// The layers weren't read (or couldn't be): the notes of reading the PDF part still hold.
|
||
if !read {
|
||
return (doc, warnings);
|
||
}
|
||
// The layers hold the art that the PDF part leaves out or, in a PDF, that the import clipped
|
||
// to the page.
|
||
warnings.retain(|w| w != vectorcraft_pdf::OFF_ARTBOARD_NOTE && w != vectorcraft_pdf::PAST_PAGE_NOTE);
|
||
(doc, warnings)
|
||
}
|
||
|
||
/// A `.ai` saved without PDF compatibility (its PDF part is a placeholder page) from the editor's
|
||
/// own copy of its art alone: `None` when the file has none (or pages are picked, or layers or the
|
||
/// editing data are off), an error when it can't be read.
|
||
fn from_editing_data_alone(bytes: &[u8], opts: &LoadOptions) -> Option<Result<(Document, Vec<String>)>> {
|
||
if opts.pages.is_some() || !opts.layers || !opts.editing_data {
|
||
return None;
|
||
}
|
||
let private = vectorcraft_pdf::illustrator_data(bytes, opts.password.as_deref())?;
|
||
Some(
|
||
vectorcraft_eps::ai_alone(&private)
|
||
.map_err(|why| err(format!("this file was saved without PDF compatibility, and its editing data can't be read ({why})"))),
|
||
)
|
||
}
|
||
|
||
/// [`load`] with `document.open` options (the PDF pages, box and password; the DXF options).
|
||
pub fn load_with(name: &str, bytes: &[u8], opts: &LoadOptions) -> Result<Loaded> {
|
||
let format = detect(name, bytes).ok_or_else(|| match super::unsupported(&super::extension(name)) {
|
||
Some(u) => err(format!("can't open `{}`: {}", file_name(name), u.hint)),
|
||
None => err(format!("can't open `{name}`: not a format VectorCraft reads (see document.formats)")),
|
||
})?;
|
||
let title = file_name(name);
|
||
let mut converted = false;
|
||
let mut preview_only = false;
|
||
let (mut doc, mut warnings, restored) = match format.id {
|
||
// EPS and PostScript .ai: the document our EPS files carry, else the PostScript read.
|
||
_ if format.id == "eps" || vectorcraft_pdf::is_postscript(bytes) => {
|
||
let editing = vectorcraft_eps::has_native(bytes).then_some((true, || vectorcraft_eps::native(bytes)));
|
||
restore_or_import(editing, || {
|
||
let r = vectorcraft_eps::import_with(bytes, opts.editing_data).map_err(|e| err(format!("can't open `{}`: {e}", file_name(name))))?;
|
||
Ok((r.document, r.warnings))
|
||
})?
|
||
}
|
||
"vectorcraft" | "template" => {
|
||
let (d, info, warnings) = native_file(bytes)?;
|
||
converted = info.is_old() || super::extension(name) == vectorcraft_format::LEGACY_EXTENSION;
|
||
(d, warnings, false)
|
||
}
|
||
"svg" | "svgz" => {
|
||
let text = vectorcraft_svg::text_of(bytes).map_err(err)?;
|
||
let editing = vectorcraft_svg::editing(&text).map(|e| (e.intact, move || vectorcraft_format::base64_decode(&e.data)));
|
||
// Relative links are found in the SVG's folder (when `name` is a path).
|
||
let folder = std::path::Path::new(name).parent().map(|f| f.to_string_lossy()).filter(|f| !f.is_empty()).map(|f| absolute_path(&f));
|
||
restore_or_import(editing, || import_svg(&text, folder.as_deref()))?
|
||
}
|
||
"pdf" | "ai" | "ait" => {
|
||
// Saved with Preserve Editing: the document it carries, unless some pages are picked.
|
||
let editing = opts
|
||
.pages
|
||
.is_none()
|
||
.then(|| vectorcraft_pdf::editing_with(bytes, opts.password.as_deref()))
|
||
.flatten()
|
||
.map(|e| (e.intact, move || Some(e.data)));
|
||
restore_or_import(editing, || match super::pdfimport::import(bytes, opts, format.id != "pdf") {
|
||
Ok(r) => {
|
||
// Pages of text alone: the editing copy alone where it reads, as for a file
|
||
// saved without its PDF part (#1387: else the page, which is the art).
|
||
let alone = r.only_text.then(|| from_editing_data_alone(bytes, opts)).flatten().and_then(|read| read.ok());
|
||
Ok(alone.unwrap_or_else(|| through_editing_data(bytes, opts, r.document, r.warnings)))
|
||
}
|
||
// Saved without its PDF part: the editing copy is all the file has.
|
||
Err(e) if e.to_string() == vectorcraft_pdf::PdfError::PlaceholderOnly.to_string() => {
|
||
from_editing_data_alone(bytes, opts).unwrap_or(Err(e))
|
||
}
|
||
Err(e) => Err(e),
|
||
})?
|
||
}
|
||
"dxf" => {
|
||
let (doc, warnings) = super::dxfimport::import(bytes, &opts.dxf)?;
|
||
(doc, warnings, false)
|
||
}
|
||
"emf" | "wmf" => {
|
||
let (doc, warnings) = super::metafile::import(bytes)?;
|
||
(doc, warnings, false)
|
||
}
|
||
"affinity" => {
|
||
let i = super::affinity::import(&title, bytes)?;
|
||
preview_only = i.preview_only;
|
||
(i.doc, i.warnings, false)
|
||
}
|
||
_ if format.raster => (raster_doc(&title, bytes)?, vec![], false),
|
||
_ => return Err(err(format!("{} files can't be opened yet", format.label))),
|
||
};
|
||
// Threaded type read from a file flows through its frames.
|
||
if !doc.text_threads.is_empty() && !restored {
|
||
crate::cmd::threads::reflow(&Document::new(1.0, 1.0), &mut doc);
|
||
}
|
||
if let Some(mode) = opts.color_mode.filter(|m| *m != doc.color_mode) {
|
||
super::super::colormgmt::set_color_mode(&mut doc, mode, true, None, opts.grays);
|
||
}
|
||
// Imports are named after the file; a native document keeps its own title (the tab shows the
|
||
// file name once it has a path).
|
||
if !matches!(format.id, "vectorcraft" | "template") || doc.title.is_empty() {
|
||
doc.title = title;
|
||
}
|
||
warnings.extend(doc.images.values().filter_map(|b| too_large_note(&b.bytes)));
|
||
Ok(Loaded { doc, format, warnings, restored, converted, preview_only })
|
||
}
|
||
|
||
/// Import SVG text, reading the files its images link to (relative links from `folder`, the SVG's
|
||
/// own): rasters stay linked, SVG files become art, missing ones placeholders (see
|
||
/// [`vectorcraft_svg::ImportOptions`]).
|
||
pub(crate) fn import_svg(text: &str, folder: Option<&str>) -> Result<(Document, Vec<String>)> {
|
||
let read = |path: &str| {
|
||
// Only files (not folders or devices) are read.
|
||
file_stamp(path)?;
|
||
let bytes = read_file(path).ok()?;
|
||
let link = crate::cmd::links::link_info(path, &bytes);
|
||
Some((bytes, link))
|
||
};
|
||
vectorcraft_svg::import_with(text, &vectorcraft_svg::ImportOptions { folder, read: Some(&read) }).map_err(err)
|
||
}
|
||
|
||
/// Open a file's bytes as the new active document (what `document.open` does) →
|
||
/// `{index, title, format, warnings, restored, missingLinks, modifiedLinks, updatedLinks}`. The
|
||
/// document keeps `path` (and its format, for Save) when Save can write that format back: not a
|
||
/// template, a partly read PDF, or a `.ai` file whose native document didn't come back. The
|
||
/// document's linked files are looked for from `path` ([`crate::cmd::links::resolve`]).
|
||
pub fn open_bytes(s: &mut Session, name: &str, bytes: &[u8], path: Option<String>) -> Result<Value> {
|
||
open_bytes_with(s, name, bytes, path, &Value::Null)
|
||
}
|
||
|
||
/// [`open_bytes`] with the `document.open` options in `p` ([`LoadOptions::from_params`]).
|
||
pub fn open_bytes_with(s: &mut Session, name: &str, bytes: &[u8], path: Option<String>, p: &Value) -> Result<Value> {
|
||
let update_links = s.prefs.update_links == "automatically";
|
||
open_read(s, read_for_open(name, bytes, path, p, update_links)?)
|
||
}
|
||
|
||
/// A file read for `document.open` but not opened yet ([`read_for_open`], [`open_read`]).
|
||
pub struct ReadFile {
|
||
loaded: Loaded,
|
||
opts: LoadOptions,
|
||
/// Where the file was read from.
|
||
path: Option<String>,
|
||
/// What became of its linked files.
|
||
links: Resolved,
|
||
}
|
||
|
||
#[cfg(test)]
|
||
impl ReadFile {
|
||
/// The document as it was read, before it opens.
|
||
pub(crate) fn document(&self) -> &Document {
|
||
&self.loaded.doc
|
||
}
|
||
}
|
||
|
||
/// The first half of [`open_bytes_with`], which needs no session (an app may do it on another
|
||
/// thread): read and decode the file, read its linked files and lay out its type → what
|
||
/// [`open_read`] opens. The linked files are looked for from `path`, where the file was read from,
|
||
/// and modified ones are read again when `update_links` (Preferences › File Handling › Update
|
||
/// Links set to Automatically; see [`crate::cmd::links::resolve`]).
|
||
pub fn read_for_open(name: &str, bytes: &[u8], path: Option<String>, p: &Value, update_links: bool) -> Result<ReadFile> {
|
||
let opts = LoadOptions::from_params("document.open", p)?;
|
||
let mut loaded = load_with(name, bytes, &opts)?;
|
||
let links = crate::cmd::links::resolve(&mut loaded.doc, path.as_deref(), update_links);
|
||
Session::refresh_text_bounds(&mut loaded.doc);
|
||
Ok(ReadFile { loaded, opts, path, links })
|
||
}
|
||
|
||
/// The second half of [`open_bytes_with`]: open a file [`read_for_open`] read as the new active
|
||
/// document → `document.open`'s result.
|
||
pub fn open_read(s: &mut Session, file: ReadFile) -> Result<Value> {
|
||
open_loaded(s, file.loaded, file.links, file.path, &file.opts, false)
|
||
}
|
||
|
||
/// File → New from Template: any readable file (at `path`, if it is one: its links are looked for
|
||
/// from there) as a new untitled document.
|
||
pub fn open_template(s: &mut Session, name: &str, bytes: &[u8], path: Option<&str>) -> Result<Value> {
|
||
let mut loaded = load(name, bytes)?;
|
||
if loaded.preview_only {
|
||
return Err(err(
|
||
"only this Affinity file's embedded preview could be read: use File › Open to see it with its warning, or export SVG or PDF from Affinity first",
|
||
));
|
||
}
|
||
let links = crate::cmd::links::resolve(&mut loaded.doc, path, s.prefs.update_links == "automatically");
|
||
open_loaded(s, loaded, links, path.map(str::to_string), &LoadOptions::default(), true)
|
||
}
|
||
|
||
/// Make a loaded file the new active document; `links` is what became of its linked files, and
|
||
/// `opts` are the options it was read with.
|
||
fn open_loaded(s: &mut Session, loaded: Loaded, links: Resolved, path: Option<String>, opts: &LoadOptions, as_template: bool) -> Result<Value> {
|
||
let Loaded { mut doc, format, warnings, restored, converted, .. } = loaded.with_grid_prefs(&s.prefs);
|
||
// What reading the file left out of the document, if anything.
|
||
let losses: Vec<String> = warnings.iter().filter(|w| is_loss(w)).cloned().collect();
|
||
let source_path = path.clone().filter(|_| !losses.is_empty());
|
||
// A template (saved by Save as Template, or an .ait/.vctemplate file) opens as a new untitled
|
||
// document.
|
||
let template = as_template || doc.template || matches!(format.id, "ait" | "template");
|
||
if template {
|
||
doc.template = false;
|
||
doc.title = s.next_untitled();
|
||
}
|
||
// Save writes the file back only in a format it writes, only a whole PDF (see
|
||
// [`LoadOptions::is_partial`]), and a .ai file only when it carried the native document (Save
|
||
// writes .ai that way).
|
||
let partial = format.id == "pdf" && opts.is_partial();
|
||
let lossy_ai = format.id == "ai" && !restored;
|
||
let path = path.filter(|_| !template && !partial && !lossy_ai && SAVE_FORMATS.contains(&format.id));
|
||
let saves_back = path.is_some();
|
||
let converted = saves_back && converted && s.prefs.append_converted;
|
||
let index = s.add_document(doc, path);
|
||
let st = s.doc_mut()?;
|
||
if saves_back {
|
||
st.format = format.id;
|
||
}
|
||
st.converted = converted;
|
||
st.imported_from = source_path;
|
||
st.import_losses = losses;
|
||
let title = s.documents()[index].title();
|
||
Ok(super::merge(json!({ "index": index, "title": title, "format": format.id, "warnings": warnings, "restored": restored }), links.to_json()))
|
||
}
|
||
|
||
/// A file named by a command's params: `{path}` (read from disk) or `{name, dataBase64}`.
|
||
pub(crate) struct Source<'a> {
|
||
/// The path, or the given name (default "Untitled"): for the extension and the title.
|
||
pub name: &'a str,
|
||
pub bytes: Vec<u8>,
|
||
pub path: Option<&'a str>,
|
||
}
|
||
|
||
/// The file `p` names for command `cmd` (see [`Source`]).
|
||
pub(crate) fn source<'a>(p: &'a Value, cmd: &str) -> Result<Source<'a>> {
|
||
match (str_param(p, "path"), str_param(p, "dataBase64")) {
|
||
(Some(path), _) => Ok(Source { name: path, bytes: read_file(path)?, path: Some(path) }),
|
||
(None, Some(b64)) => {
|
||
let bytes = vectorcraft_format::base64_decode(b64).ok_or_else(|| bad(cmd, "bad base64"))?;
|
||
Ok(Source { name: str_param(p, "name").unwrap_or("Untitled"), bytes, path: None })
|
||
}
|
||
_ => Err(bad(cmd, "give path, or name and dataBase64")),
|
||
}
|
||
}
|
||
|
||
pub(super) fn open(s: &mut Session, p: &Value) -> Result<Value> {
|
||
let src = source(p, "document.open")?;
|
||
// A relative path is the file in the working directory: its folder is where relative links
|
||
// are found (a bare file name has no folder of its own).
|
||
let path = src.path.map(super::absolute_path);
|
||
open_bytes_with(s, path.as_deref().unwrap_or(src.name), &src.bytes, path.clone(), p)
|
||
}
|
||
|
||
pub(super) fn new_from_template(s: &mut Session, p: &Value) -> Result<Value> {
|
||
let src = source(p, "file.newFromTemplate")?;
|
||
let path = src.path.map(super::absolute_path);
|
||
open_template(s, path.as_deref().unwrap_or(src.name), &src.bytes, path.as_deref())
|
||
}
|
||
|
||
/// The most memory decoding one image may take: a 60 in print sheet at 300 ppi (18000 × 6600 px)
|
||
/// is ~475 MB as RGBA, past the decoder's 512 MB default once it is converted. The web app keeps
|
||
/// that default: wasm32 has 4 GB to address and aborts when an allocation fails.
|
||
pub(crate) use vectorcraft_doc::MAX_RASTER_ALLOC;
|
||
|
||
/// What to say of encoded image `bytes` that need more than [`MAX_RASTER_ALLOC`] to decode (its
|
||
/// header says so; the pixels aren't read): the renderer, which has the same allowance, draws
|
||
/// nothing for them, so Open, Place and the Links panel say it (#1479). `None` for images that
|
||
/// decode, and for bytes that aren't an image.
|
||
pub(crate) fn too_large_note(bytes: &[u8]) -> Option<String> {
|
||
use image::ImageDecoder as _;
|
||
let d = image::ImageReader::new(Cursor::new(bytes)).with_guessed_format().ok()?.into_decoder().ok()?;
|
||
let (w, h) = d.dimensions();
|
||
(d.total_bytes() > MAX_RASTER_ALLOC).then(|| format!("an image of {w} × {h} pixels is too large to draw"))
|
||
}
|
||
|
||
/// Decode an image's header (and, for formats stored as PNG, its pixels). CMYK TIFFs are kept as
|
||
/// they are, with their ink amounts ([`ImageBlob::cmyk`]); CMYK TIFFs with an alpha channel, which
|
||
/// the decoder can't read, become RGBA in the active colour settings' CMYK, as do CMYK Photoshop
|
||
/// documents, whose merged image is read ([`psdread`]). Grayscale TIFFs with an alpha channel or
|
||
/// other extra channels, which the decoder can't read either, become RGBA too.
|
||
pub fn raster_image(bytes: &[u8]) -> Result<RasterImage> {
|
||
let ppi = super::ppi::resolution(bytes);
|
||
if psdread::is_psd(bytes) {
|
||
let cms = vectorcraft_color::cms::active();
|
||
return as_png(psdread::decode(bytes, MAX_RASTER_ALLOC, |c| cms.cmyk_to_srgb(c, false)).map_err(err)?, ppi);
|
||
}
|
||
let mut reader = image::ImageReader::new(Cursor::new(bytes)).with_guessed_format().map_err(err)?;
|
||
let mut limits = image::Limits::default();
|
||
limits.max_alloc = Some(MAX_RASTER_ALLOC);
|
||
reader.limits(limits);
|
||
let kind = reader.format().ok_or_else(|| err("not an image VectorCraft reads (see document.formats)"))?;
|
||
let f = image_format(kind).ok_or_else(|| err(format!("{kind:?} images can't be opened (see document.formats)")))?;
|
||
let cmyk = || ImageBlob::new(f.mime, bytes.to_vec()).cmyk().is_some();
|
||
if matches!(f.id, "png" | "jpg" | "gif" | "webp") || (f.id == "tiff" && cmyk()) {
|
||
let (width, height) = reader.into_dimensions().map_err(err)?;
|
||
return stored(bytes.to_vec(), f.mime, (width, height), ppi);
|
||
}
|
||
let extra_samples = || {
|
||
let cms = vectorcraft_color::cms::active();
|
||
vectorcraft_doc::cmyk::extra_samples_tiff_rgba(bytes, |c| cms.cmyk_to_srgb(c, false))
|
||
};
|
||
let img = match (f.id == "tiff").then(extra_samples).flatten() {
|
||
Some(img) => img,
|
||
None => reader.decode().map_err(err)?.to_rgba8(),
|
||
};
|
||
as_png(img, ppi)
|
||
}
|
||
|
||
/// `img` stored as a PNG that keeps the file's resolution.
|
||
fn as_png(img: image::RgbaImage, ppi: Option<(f64, f64)>) -> Result<RasterImage> {
|
||
let size = img.dimensions();
|
||
let mut png = Vec::new();
|
||
img.write_to(&mut Cursor::new(&mut png), image::ImageFormat::Png).map_err(err)?;
|
||
let png = match ppi {
|
||
Some(r) => super::ppi::with_png_resolution(&png, r),
|
||
None => png,
|
||
};
|
||
stored(png, "image/png", size, ppi)
|
||
}
|
||
|
||
/// An image's encoded `bytes`, `width` × `height` pixels, ready to embed.
|
||
fn stored(bytes: Vec<u8>, mime: &'static str, (width, height): (u32, u32), ppi: Option<(f64, f64)>) -> Result<RasterImage> {
|
||
if width == 0 || height == 0 {
|
||
return Err(err("the image is empty"));
|
||
}
|
||
let blob = ImageBlob::new(mime, bytes);
|
||
Ok(RasterImage { key: blob.content_key(), blob, width, height, ppi })
|
||
}
|
||
|
||
/// An image as a document of its physical size at the resolution it declares (as Place sizes it;
|
||
/// 72 ppi, 1 px = 1 pt, when it declares none), the image named after the file.
|
||
pub(super) fn raster_doc(name: &str, bytes: &[u8]) -> Result<Document> {
|
||
let RasterImage { key, blob, width, height, ppi } = raster_image(bytes)?;
|
||
let (sx, sy) = crate::cmd::place::pt_per_px(ppi);
|
||
let mut d = Document::new(width as f64 * sx, height as f64 * sy);
|
||
let layer = d.layers[0].id;
|
||
let id = d.alloc_id();
|
||
let xf = Affine::scale_non_uniform(sx, sy);
|
||
let mut n =
|
||
Node::new(id, NodeKind::Image(Box::new(ImageObject { key: key.clone(), width, height, xf, link: None, placement: Default::default() })));
|
||
n.name = Some(name.to_string());
|
||
d.images.insert(key, blob);
|
||
d.insert(Some(layer), 0, n).map_err(err)?;
|
||
Ok(d)
|
||
}
|
||
|
||
/// Does this import note say that the file has something the document doesn't?
|
||
fn is_loss(note: &str) -> bool {
|
||
note == vectorcraft_pdf::OFF_ARTBOARD_NOTE || vectorcraft_eps::is_loss(note)
|
||
}
|
||
|
||
/// Writing the file `target` for document `st`: not over the file `st` was read from when reading
|
||
/// it left something out (hidden text, art or layers), unless `p` has `acknowledgeLoss: true`.
|
||
/// Another name keeps the original file, with all it has.
|
||
pub(crate) fn check_not_lossy_overwrite(st: &crate::DocState, target: &str, p: &Value, cmd: &str) -> Result<()> {
|
||
let Some(losses) = overwrite_losses(st, target, p) else { return Ok(()) };
|
||
let what = losses_summary(losses);
|
||
Err(bad(
|
||
cmd,
|
||
format!(
|
||
"{target} is the file this document was read from, and reading it left things out ({what}): writing over it would lose them for good. Write another file instead, or pass acknowledgeLoss: true to replace it anyway"
|
||
),
|
||
))
|
||
}
|
||
|
||
/// What writing the file `target` for document `st` would lose for good: the notes of what reading
|
||
/// it left out when `target` is the file `st` was read from, unless `p` has `acknowledgeLoss: true`.
|
||
/// The UI asks before such a write and repeats it with `acknowledgeLoss` ([`check_not_lossy_overwrite`]).
|
||
pub fn overwrite_losses<'a>(st: &'a crate::DocState, target: &str, p: &Value) -> Option<&'a [String]> {
|
||
let source = st.imported_from.as_deref().filter(|_| !st.import_losses.is_empty())?;
|
||
(!bool_or(p, "acknowledgeLoss", false) && same_file(source, target)).then_some(st.import_losses.as_slice())
|
||
}
|
||
|
||
/// Up to three of `losses`, quoted, and how many more.
|
||
pub fn losses_summary(losses: &[String]) -> String {
|
||
let mut what = losses.iter().take(3).map(|n| format!("“{n}”")).collect::<Vec<_>>().join("; ");
|
||
if losses.len() > 3 {
|
||
what.push_str(&format!("; {} more", losses.len() - 3));
|
||
}
|
||
what
|
||
}
|
||
|
||
/// Do `a` and `b` name one file (spelled differently, or through a link)?
|
||
fn same_file(a: &str, b: &str) -> bool {
|
||
match (std::fs::canonicalize(a), std::fs::canonicalize(b)) {
|
||
(Ok(a), Ok(b)) => a == b,
|
||
_ => a == b,
|
||
}
|
||
}
|