794 lines
34 KiB
Rust
794 lines
34 KiB
Rust
//! The Type tools: Type (T), Area Type and Type on a Path.
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//!
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//! Type: click places point type, drag draws an area-type frame, clicking into existing text
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//! places the caret. Area Type / Type on a Path: click a path to turn it into a text frame or a
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//! baseline (`text.createInPath`). Point type placed by a click and left empty is discarded when
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//! editing ends (`text.discardEmpty`); frames keep their shape. Where new type goes (the click, the
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//! frame's corners) snaps to Smart Guides ([`DrawSnap`]), hovering too.
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//!
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//! While editing: caret movement by character / word (Cmd or Alt) / line (Up/Down) / line ends
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//! (Home/End; Cmd = whole text), Shift extends the selection, drag selects, double-click selects a
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//! word and triple-click a paragraph, typing replaces the selection. Edits are coalesced into one
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//! undo step per typing session: the tool keeps the styled runs locally and previews a single
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//! `text.editRange` (the changed span, with its styled runs) against the session snapshot.
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//! Styling a selected range goes through `text.setRangeStyle` (the Character panel reads the
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//! selection from [`Tool::options`]); Alt+arrows step it by the Preferences › Type increments
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//! (`type.step`). New type starts with placeholder text, selected, when Fill New Type Objects With
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//! Placeholder Text is on.
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//!
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//! IME: the marked text of a composition is part of the typing session (so it lays out in place),
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//! underlined, until the IME commits it (it then goes through [`Tool::text_input`]) or clears it.
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use std::ops::Range;
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use std::sync::{Arc, Mutex};
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use serde_json::{Value, json};
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use vectorcraft_doc::hit::hit_test;
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use vectorcraft_doc::{NodeId, NodeKind, TextKind, TextObject, TextRun};
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use vectorcraft_geom::{BezPath, Point, Rect, Shape};
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use vectorcraft_text::{FontDb, TextLayout, edit};
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use crate::guides::DrawSnap;
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use crate::{Action, Cursor, Mods, Overlay, PointerEvent, PointerKind, Tool, ToolContext, ToolKey};
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/// Which of the Type tools this is.
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#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
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enum Mode {
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#[default]
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Type,
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Area,
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OnPath,
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}
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/// A coalesced typing session: the runs at its start and the runs now.
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struct Typing {
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base: Vec<TextRun>,
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cur: Vec<TextRun>,
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/// The first byte any edit of the session touched (the text before it is unchanged): the
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/// previewed span starts no later, so Return at a paragraph's end splits that paragraph (its
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/// style continues), not the next one.
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lo: usize,
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}
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/// IME marked text inside the typing session, not yet committed.
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#[derive(Clone, Debug, PartialEq)]
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struct Preedit {
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/// Byte range of the marked text in the session's runs.
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range: Range<usize>,
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/// The clause being converted, in bytes relative to `range.start` (empty: the IME's cursor).
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active: Option<Range<usize>>,
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}
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/// The edited text's layout, keyed by the font database's generation and the text.
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type CachedLayout = ((u64, TextObject), Arc<TextLayout>);
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#[derive(Default)]
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pub struct TypeTool {
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vertical: bool,
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mode: Mode,
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/// Text object being edited.
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editing: Option<NodeId>,
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/// The point type a click just placed (edited now): discarded if empty when editing ends.
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fresh: Option<NodeId>,
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/// Caret and selection anchor (byte offsets into the plain text).
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caret: usize,
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anchor: usize,
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/// Horizontal position kept by Up/Down (text space).
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goal_x: Option<f64>,
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typing: Option<Typing>,
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preedit: Option<Preedit>,
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/// Where the button went down, and where new type goes from there (snapped to Smart Guides).
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press: Option<(Point, Point)>,
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/// The other corner of an area dragged out (snapped).
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drag: Option<Point>,
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/// Smart Guides for where new type goes.
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snap: DrawSnap,
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/// The press landed in the edited text: dragging selects.
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selecting: bool,
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/// Click counting for double/triple click (position of the last click, count).
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clicks: (Option<Point>, u8),
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/// Styled copy of the last copied range (pasting the same plain text keeps its styles).
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clipboard: Vec<TextRun>,
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cache: Mutex<Option<CachedLayout>>,
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}
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impl TypeTool {
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pub fn new(id: &str) -> Self {
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let mode = match id {
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"areaType" | "verticalAreaType" => Mode::Area,
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"typeOnPath" | "verticalTypeOnPath" => Mode::OnPath,
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_ => Mode::Type,
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};
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Self { mode, vertical: id.starts_with("vertical"), ..Default::default() }
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}
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fn text<'a>(cx: &'a ToolContext, id: NodeId) -> Option<&'a TextObject> {
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match &cx.doc.node(id)?.kind {
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NodeKind::Text(t) => Some(t),
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_ => None,
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}
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}
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/// Layout of `t`, cached by content (overlays run every frame) and by the fonts available (the
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/// web build adds fonts after startup).
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fn layout(&self, t: &TextObject) -> Arc<TextLayout> {
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let fonts = FontDb::global().generation();
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let mut c = self.cache.lock().unwrap_or_else(|e| e.into_inner());
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if let Some(((g, k), l)) = c.as_ref()
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&& *g == fonts
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&& k == t
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{
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return l.clone();
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}
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let l = Arc::new(vectorcraft_text::layout(FontDb::global(), t));
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*c = Some(((fonts, t.clone()), l.clone()));
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l
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}
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fn plain(&self, cx: &ToolContext) -> String {
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match &self.typing {
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Some(ty) => ty.cur.iter().map(|r| r.text.as_str()).collect(),
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None => self.editing.and_then(|id| Self::text(cx, id)).map(|t| t.plain_text()).unwrap_or_default(),
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}
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}
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/// The edited object as it currently is (with the typing session's runs).
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fn current(&self, cx: &ToolContext) -> Option<TextObject> {
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let mut t = Self::text(cx, self.editing?)?.clone();
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if let Some(ty) = &self.typing {
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t.runs = ty.cur.clone();
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}
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Some(t)
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}
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fn sel(&self) -> (usize, usize) {
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(self.caret.min(self.anchor), self.caret.max(self.anchor))
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}
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/// End the typing session (one undo step). Marked text left by an IME stays as typed (as
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/// clicking away from a composition does in macOS text views); the UI interrupts the IME.
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fn commit(&mut self) -> Vec<Action> {
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self.preedit = None;
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if self.typing.take().is_some() { vec![Action::Commit] } else { vec![] }
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}
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/// Stop editing. Point type a click placed that is still empty is discarded, with the steps
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/// since its click (`text.discardEmpty`).
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fn finish(&mut self, cx: &ToolContext) -> Vec<Action> {
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let mut out = self.commit();
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if let Some(id) = self.fresh.take()
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&& self.editing == Some(id)
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&& Self::text(cx, id).is_some_and(|t| matches!(t.kind, TextKind::Point) && edit::runs_len(&t.runs) == 0)
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{
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out.push(Action::Exec("text.discardEmpty".into(), json!({"id": id.0})));
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}
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self.editing = None;
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self.selecting = false;
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self.goal_x = None;
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out
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}
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/// Replace the selection with `insert` (styled `runs` when given) inside the typing session.
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fn replace(&mut self, cx: &ToolContext, insert: &str, styled: Option<Vec<TextRun>>) -> Vec<Action> {
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let Some(id) = self.editing else { return vec![] };
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let Some(t) = Self::text(cx, id) else {
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self.editing = None;
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return vec![];
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};
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let mut out = vec![];
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// The document changed under us (undo, a panel edit): start a new session.
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if self.typing.as_ref().is_some_and(|ty| ty.cur != t.runs) {
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out.push(Action::Commit);
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self.typing = None;
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}
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if self.typing.is_none() {
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out.push(Action::Begin("Typing".into()));
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}
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let ty = self.typing.get_or_insert_with(|| Typing { base: t.runs.clone(), cur: t.runs.clone(), lo: usize::MAX });
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let len = edit::runs_len(&ty.cur);
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let (a, b) = (self.caret.min(self.anchor).min(len), self.caret.max(self.anchor).min(len));
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ty.lo = ty.lo.min(a);
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let caret = match &styled {
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Some(r) => edit::replace_range_styled(&mut ty.cur, a, b, r),
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None => edit::replace_range(&mut ty.cur, a, b, insert),
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};
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self.caret = caret;
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self.anchor = caret;
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self.goal_x = None;
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// One preview for the whole session: the changed span of base → cur, with its runs.
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let base: String = ty.base.iter().map(|r| r.text.as_str()).collect();
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let cur: String = ty.cur.iter().map(|r| r.text.as_str()).collect();
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let (p, s) = common_affixes(&base, &cur, ty.lo);
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let runs = edit::slice_runs(&ty.cur, p, cur.len() - s);
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let runs = if runs.is_empty() { json!([]) } else { serde_json::to_value(&runs).unwrap_or(json!([])) };
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out.push(Action::Preview("text.editRange".into(), json!({"id": id.0, "start": p, "end": base.len() - s, "runs": runs})));
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out
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}
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/// Move the caret (Shift keeps the anchor). Moving ends the typing session.
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fn move_to(&mut self, byte: usize, extend: bool) -> Vec<Action> {
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let out = self.commit();
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self.caret = byte;
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if !extend {
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self.anchor = byte;
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}
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out
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}
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fn start_editing(&mut self, id: NodeId, caret: usize) {
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self.editing = Some(id);
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self.fresh = None;
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self.caret = caret;
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self.anchor = caret;
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self.goal_x = None;
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self.typing = None;
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self.preedit = None;
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}
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/// Byte under `p` in the edited text if `p` is inside it (frame, path band or layout bounds).
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fn hit_edited(&self, cx: &ToolContext, p: Point) -> Option<usize> {
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let t = self.current(cx)?;
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let lay = self.layout(&t);
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let local = t.xf.inverse() * p;
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let tol = cx.tol(4.0);
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let inside = match &t.kind {
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TextKind::Area { frame } => frame.bounds().is_some_and(|b| b.inflate(tol, tol).contains(local)),
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_ => lay.bounds.inflate(tol, tol).contains(local),
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};
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inside.then(|| vectorcraft_text::hit_byte(&lay, local))
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}
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fn select_word_or_para(&mut self, cx: &ToolContext, para: bool) {
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let s = self.plain(cx);
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let r = if para { edit::paragraph_at(&s, self.caret) } else { edit::word_at(&s, self.caret) };
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self.anchor = r.start;
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self.caret = r.end;
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}
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/// Path under `p` for the Area Type / Type on a Path tools.
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fn path_at(cx: &ToolContext, p: Point, closed: bool) -> Option<NodeId> {
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let h = hit_test(cx.doc, p, vectorcraft_doc::hit::HitOptions { tol: cx.tol(4.0), outline: true, ..Default::default() })?;
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match &cx.doc.node(h.leaf)?.kind {
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NodeKind::Path { path, .. } if !closed || path.is_closed() => Some(h.leaf),
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_ => None,
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}
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}
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/// Start editing the type under `p` with the caret there → the actions (ending the previous
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/// edit, selecting the type); None when no type is under `p`. A click among the characters
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/// edits them, whatever Type Object Selection by Path Only says.
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fn edit_at(&mut self, cx: &ToolContext, p: Point) -> Option<Vec<Action>> {
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let h = hit_test(cx.doc, p, vectorcraft_doc::hit::HitOptions { type_path_only: false, ..cx.hit_options() })?;
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let Some(NodeKind::Text(t)) = cx.doc.node(h.leaf).map(|n| &n.kind) else { return None };
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let lay = self.layout(t);
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let byte = vectorcraft_text::hit_byte(&lay, t.xf.inverse() * p);
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let mut out = self.finish(cx);
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self.start_editing(h.leaf, byte);
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self.clicks = (Some(p), 1);
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out.push(Action::Exec("select.set".into(), json!({"ids": [h.leaf.0]})));
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Some(out)
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}
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/// The button released after a press at `start` (new type goes at `at`).
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fn on_up(&mut self, cx: &ToolContext, start: Point, at: Point) -> Vec<Action> {
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// Click into existing text: place the caret.
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if let Some(out) = self.edit_at(cx, start) {
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return out;
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}
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let mut out = self.finish(cx);
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let drag = self.drag.take();
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// Area Type / Type on a Path: click a path.
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if self.mode != Mode::Type && drag.is_none() {
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let on_path = self.mode == Mode::OnPath;
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if let Some(pid) = Self::path_at(cx, start, !on_path) {
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let mode = if on_path { "onPath" } else { "area" };
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out.push(Action::Exec(
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"text.createInPath".into(),
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json!({"path": pid.0, "mode": mode, "text": "", "at": [start.x, start.y], "vertical": self.vertical, "placeholder": cx.placeholder_text}),
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));
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out.push(Action::Notify("text.editNew".into()));
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return out;
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}
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}
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let area = drag.map(|d| Rect::from_points(at, d)).filter(|r| r.width() > cx.tol(6.0) && r.height() > cx.tol(6.0));
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let mut params = match area {
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Some(r) => json!({"x": r.x0, "y": r.y0, "text": "", "area": {"width": r.width(), "height": r.height()}}),
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None => json!({"x": at.x, "y": at.y, "text": ""}),
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};
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params["vertical"] = json!(self.vertical);
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params["placeholder"] = json!(cx.placeholder_text);
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out.push(Action::Exec("text.create".into(), params));
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out.push(Action::Notify("text.editNew".into()));
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out
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}
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fn overflow_marker(t: &TextObject, lay: &TextLayout, cx: &ToolContext, o: &mut Vec<Overlay>) {
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if !lay.overflow {
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return;
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}
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// The out port: bottom-right of the frame (end of the path for type on a path).
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let port = match &t.kind {
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TextKind::Area { frame } => frame.bounds().map(|b| t.xf * Point::new(b.x1, b.y1)),
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TextKind::OnPath { path, .. } => path.to_bezpath().segments().last().map(|s| t.xf * vectorcraft_geom::ParamCurve::end(&s)),
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TextKind::Point => None,
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};
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let Some(c) = port else { return };
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let h = cx.tol(4.5);
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let r = Rect::new(c.x - h, c.y - h, c.x + h, c.y + h);
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let red = [230, 30, 30];
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o.push(Overlay::Path { path: r.to_path(0.1), color: red, width: 1.0, dashed: false });
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let (k, m) = (cx.tol(2.5), r.center());
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o.push(Overlay::Line { a: Point::new(m.x - k, m.y), b: Point::new(m.x + k, m.y), color: red, dashed: false });
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o.push(Overlay::Line { a: Point::new(m.x, m.y - k), b: Point::new(m.x, m.y + k), color: red, dashed: false });
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}
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}
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/// Byte range in `s` of the characters `r` (IME ranges count characters; carets count bytes).
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/// `None` when `r` runs past the end of `s` or backwards.
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/// The `type.step` an Alt+arrow asks for, by one step: ←/→ kerning at a `caret`, else tracking;
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/// ↑/↓ leading (down opens it up); Shift+↑/↓ baseline shift.
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fn step_key(key: ToolKey, shift: bool, caret: bool) -> Option<(&'static str, f64)> {
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let sign = |up: bool| if up { 1.0 } else { -1.0 };
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Some(match (key, shift) {
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(ToolKey::Left | ToolKey::Right, false) => (if caret { "kerning" } else { "tracking" }, sign(key == ToolKey::Right)),
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(ToolKey::Up | ToolKey::Down, false) => ("leading", sign(key == ToolKey::Down)),
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(ToolKey::Up | ToolKey::Down, true) => ("baselineShift", sign(key == ToolKey::Up)),
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_ => return None,
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})
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}
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fn char_range_to_bytes(s: &str, r: Range<usize>) -> Option<Range<usize>> {
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let byte = |c: usize| if c == s.chars().count() { Some(s.len()) } else { s.char_indices().nth(c).map(|(i, _)| i) };
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let (a, b) = (byte(r.start)?, byte(r.end)?);
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(a <= b).then_some(a..b)
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}
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/// Lengths of the common prefix (at most `max_prefix`) and suffix of `a` and `b` (on char
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/// boundaries, not overlapping).
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fn common_affixes(a: &str, b: &str, max_prefix: usize) -> (usize, usize) {
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let mut p = 0;
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for ((i, x), y) in a.char_indices().zip(b.chars()) {
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if x != y || i + x.len_utf8() > max_prefix {
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break;
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}
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p = i + x.len_utf8();
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}
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let max_s = (a.len() - p).min(b.len() - p);
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let mut s = 0;
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for (x, y) in a[p..].chars().rev().zip(b[p..].chars().rev()) {
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if x != y || s + x.len_utf8() > max_s {
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break;
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}
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s += x.len_utf8();
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}
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(p, s)
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}
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impl Tool for TypeTool {
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fn id(&self) -> &'static str {
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match (self.mode, self.vertical) {
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(Mode::Type, false) => "type",
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(Mode::Type, true) => "verticalType",
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(Mode::Area, false) => "areaType",
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(Mode::Area, true) => "verticalAreaType",
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(Mode::OnPath, false) => "typeOnPath",
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(Mode::OnPath, true) => "verticalTypeOnPath",
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}
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}
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fn busy(&self) -> bool {
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self.press.is_some() || self.selecting
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}
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fn wants_text(&self) -> bool {
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self.editing.is_some()
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}
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fn pointer(&mut self, cx: &ToolContext, ev: &PointerEvent) -> Vec<Action> {
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match ev.kind {
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PointerKind::Down => {
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if let Some(byte) = self.hit_edited(cx, ev.pos) {
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let same = self.clicks.0.is_some_and(|q| (q - ev.pos).hypot() <= cx.tol(4.0));
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let n = if same { self.clicks.1 + 1 } else { 1 };
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self.clicks = (Some(ev.pos), n);
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let out = self.move_to(byte, ev.mods.shift);
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self.goal_x = None;
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if n >= 3 {
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self.select_word_or_para(cx, true);
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self.clicks.1 = 0;
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} else {
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self.selecting = true;
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}
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return out;
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}
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self.clicks = (None, 0);
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// A press on other type edits it from there, so a drag selects its text at once,
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// as it does in the type being edited.
|
||
if let Some(out) = self.edit_at(cx, ev.pos) {
|
||
self.selecting = true;
|
||
return out;
|
||
}
|
||
self.press = Some((ev.pos, self.snap.press(cx, ev.pos, self.editing.as_slice(), None)));
|
||
self.drag = None;
|
||
vec![]
|
||
}
|
||
PointerKind::Drag => {
|
||
if self.selecting {
|
||
if let Some(t) = self.current(cx) {
|
||
let lay = self.layout(&t);
|
||
self.caret = vectorcraft_text::hit_byte(&lay, t.xf.inverse() * ev.pos);
|
||
self.clicks = (None, 0);
|
||
}
|
||
} else if self.press.is_some() {
|
||
self.drag = Some(self.snap.drag(cx, ev.pos, None));
|
||
}
|
||
vec![]
|
||
}
|
||
PointerKind::Up => {
|
||
if self.selecting {
|
||
self.selecting = false;
|
||
return vec![];
|
||
}
|
||
self.snap.clear();
|
||
let Some((start, at)) = self.press.take() else { return vec![] };
|
||
self.on_up(cx, start, at)
|
||
}
|
||
PointerKind::DoubleClick => {
|
||
if self.editing.is_some() && self.hit_edited(cx, ev.pos).is_some() {
|
||
self.select_word_or_para(cx, false);
|
||
self.clicks = (Some(ev.pos), 2);
|
||
}
|
||
vec![]
|
||
}
|
||
PointerKind::Move => {
|
||
// The type being edited is no target: its guides would only point at itself.
|
||
self.snap.hover(cx, ev.pos, self.editing.as_slice(), None);
|
||
vec![]
|
||
}
|
||
}
|
||
}
|
||
fn text_input(&mut self, cx: &ToolContext, s: &str) -> Vec<Action> {
|
||
if self.editing.is_none() {
|
||
return vec![];
|
||
}
|
||
let s: String = s.chars().filter(|c| !c.is_control() || matches!(c, '\n' | '\t')).map(|c| if c == '\r' { '\n' } else { c }).collect();
|
||
// An IME commit replaces its marked text (an empty commit just removes it).
|
||
let committing = self.preedit.is_some();
|
||
if committing && s.is_empty() {
|
||
return self.ime_preedit(cx, "", None);
|
||
}
|
||
if let Some(p) = self.preedit.take() {
|
||
self.anchor = p.range.start;
|
||
self.caret = p.range.end;
|
||
}
|
||
if s.is_empty() {
|
||
return vec![];
|
||
}
|
||
// Use Typographer's Quotes (Document Setup): a typed straight quote becomes the document's
|
||
// opening or closing quote, by the character before it.
|
||
let setup = &cx.doc.setup;
|
||
let s = if setup.typographers_quotes && matches!(s.as_str(), "\"" | "'") {
|
||
let text = self.plain(cx);
|
||
let mut prev = text.get(..self.caret.min(self.anchor)).and_then(|b| b.chars().next_back());
|
||
setup.quotes.apply(&s, &mut prev)
|
||
} else {
|
||
s
|
||
};
|
||
self.clicks = (None, 0);
|
||
// Pasting what we copied keeps its formatting (unless pasted text is kept plain).
|
||
let clip: String = self.clipboard.iter().map(|r| r.text.as_str()).collect();
|
||
if !committing && s.len() > 1 && s == clip && !cx.paste_plain_text {
|
||
let runs = self.clipboard.clone();
|
||
return self.replace(cx, "", Some(runs));
|
||
}
|
||
self.replace(cx, &s, None)
|
||
}
|
||
fn key(&mut self, cx: &ToolContext, key: ToolKey, mods: Mods) -> Vec<Action> {
|
||
// The IME owns the keys while it composes (the UI doesn't send them; this is a guard).
|
||
if self.preedit.is_some() {
|
||
return vec![];
|
||
}
|
||
let Some(t) = self.current(cx) else {
|
||
self.editing = None;
|
||
return vec![];
|
||
};
|
||
let text = t.plain_text();
|
||
let len = text.len();
|
||
self.caret = self.caret.min(len);
|
||
self.anchor = self.anchor.min(len);
|
||
let (a, b) = self.sel();
|
||
// Alt+arrows step the type by the Preferences › Type increments (Cmd/Ctrl too: five steps).
|
||
if mods.alt
|
||
&& let Some(id) = self.editing
|
||
&& let Some((attribute, by)) = step_key(key, mods.shift, a == b)
|
||
{
|
||
let mut out = self.commit();
|
||
let by = if mods.cmd { by * 5.0 } else { by };
|
||
out.push(Action::Exec("type.step".into(), json!({"id": id.0, "start": a, "end": b, "attribute": attribute, "by": by})));
|
||
return out;
|
||
}
|
||
let word = mods.cmd || mods.alt;
|
||
let lay = self.layout(&t);
|
||
let key = if lay.vertical {
|
||
match key {
|
||
ToolKey::Up => ToolKey::Left,
|
||
ToolKey::Down => ToolKey::Right,
|
||
ToolKey::Right => ToolKey::Up,
|
||
ToolKey::Left => ToolKey::Down,
|
||
other => other,
|
||
}
|
||
} else {
|
||
key
|
||
};
|
||
let vertical = matches!(key, ToolKey::Up | ToolKey::Down);
|
||
if !vertical {
|
||
self.goal_x = None;
|
||
}
|
||
match key {
|
||
ToolKey::Escape => self.finish(cx),
|
||
ToolKey::Enter => self.replace(cx, "\n", None),
|
||
ToolKey::Tab => self.replace(cx, "\t", None),
|
||
ToolKey::Backspace | ToolKey::Delete if a != b => self.replace(cx, "", None),
|
||
ToolKey::Backspace if self.caret > 0 => {
|
||
self.anchor = if word { edit::prev_word(&text, self.caret) } else { edit::prev_char(&text, self.caret) };
|
||
self.replace(cx, "", None)
|
||
}
|
||
ToolKey::Delete if self.caret < len => {
|
||
self.anchor = if word { edit::next_word(&text, self.caret) } else { edit::next_char(&text, self.caret) };
|
||
self.replace(cx, "", None)
|
||
}
|
||
ToolKey::Left => {
|
||
let to = if a != b && !mods.shift {
|
||
if lay.glyphs.iter().any(|g| g.rtl)
|
||
&& vectorcraft_text::caret_position(&lay, a).0.x > vectorcraft_text::caret_position(&lay, b).0.x
|
||
{
|
||
b
|
||
} else {
|
||
a
|
||
}
|
||
} else if word {
|
||
edit::prev_word(&text, self.caret)
|
||
} else {
|
||
if lay.glyphs.iter().any(|g| g.rtl) {
|
||
vectorcraft_text::caret_horizontal(&lay, self.caret, false)
|
||
} else {
|
||
edit::prev_char(&text, self.caret)
|
||
}
|
||
};
|
||
self.move_to(to, mods.shift)
|
||
}
|
||
ToolKey::Right => {
|
||
let to = if a != b && !mods.shift {
|
||
if lay.glyphs.iter().any(|g| g.rtl)
|
||
&& vectorcraft_text::caret_position(&lay, a).0.x > vectorcraft_text::caret_position(&lay, b).0.x
|
||
{
|
||
a
|
||
} else {
|
||
b
|
||
}
|
||
} else if word {
|
||
edit::next_word(&text, self.caret)
|
||
} else {
|
||
if lay.glyphs.iter().any(|g| g.rtl) {
|
||
vectorcraft_text::caret_horizontal(&lay, self.caret, true)
|
||
} else {
|
||
edit::next_char(&text, self.caret)
|
||
}
|
||
};
|
||
self.move_to(to, mods.shift)
|
||
}
|
||
ToolKey::Up | ToolKey::Down => {
|
||
let d = if key == ToolKey::Up { -1 } else { 1 };
|
||
let from = if a != b && !mods.shift { if d < 0 { a } else { b } } else { self.caret };
|
||
let x = self.goal_x.unwrap_or_else(|| lay.logical_point(vectorcraft_text::caret_position(&lay, from).0).x);
|
||
let to = if mods.cmd {
|
||
// Cmd+Up/Down: paragraph start / end.
|
||
let p = edit::paragraph_at(&text, from);
|
||
if d < 0 {
|
||
if from == p.start { edit::paragraph_at(&text, p.start.saturating_sub(1)).start } else { p.start }
|
||
} else if from == p.end {
|
||
edit::paragraph_at(&text, (p.end + 1).min(len)).end
|
||
} else {
|
||
p.end
|
||
}
|
||
} else {
|
||
vectorcraft_text::caret_vertical(&lay, from, d, x)
|
||
};
|
||
let out = self.move_to(to, mods.shift);
|
||
self.goal_x = Some(x);
|
||
out
|
||
}
|
||
ToolKey::Home => {
|
||
let to = if mods.cmd { 0 } else { vectorcraft_text::line_home(&lay, self.caret) };
|
||
self.move_to(to, mods.shift)
|
||
}
|
||
ToolKey::End => {
|
||
let to = if mods.cmd { len } else { vectorcraft_text::line_end_of(&lay, self.caret) };
|
||
self.move_to(to, mods.shift)
|
||
}
|
||
_ => vec![],
|
||
}
|
||
}
|
||
fn ime_preedit(&mut self, cx: &ToolContext, text: &str, active_chars: Option<Range<usize>>) -> Vec<Action> {
|
||
if self.editing.is_none() {
|
||
return vec![];
|
||
}
|
||
// A clear with nothing marked (some integrations send one when the IME is enabled) must
|
||
// not delete the selection.
|
||
if text.is_empty() && self.preedit.is_none() {
|
||
return vec![];
|
||
}
|
||
let text: String = text.chars().filter(|c| !c.is_control()).collect();
|
||
// The new marked text replaces the previous one, or the selection when it starts.
|
||
if let Some(p) = self.preedit.take() {
|
||
self.anchor = p.range.start;
|
||
self.caret = p.range.end;
|
||
}
|
||
self.clicks = (None, 0);
|
||
let mut out = self.replace(cx, &text, None);
|
||
if text.is_empty() {
|
||
// Cancelled before anything else was typed: no empty undo step.
|
||
if self.typing.as_ref().is_some_and(|ty| ty.cur == ty.base) {
|
||
self.typing = None;
|
||
out.push(Action::Cancel);
|
||
}
|
||
return out;
|
||
}
|
||
let end = self.caret;
|
||
let start = end.saturating_sub(text.len());
|
||
self.preedit = Some(Preedit { range: start..end, active: active_chars.and_then(|r| char_range_to_bytes(&text, r)) });
|
||
out
|
||
}
|
||
fn composing(&self) -> bool {
|
||
self.preedit.is_some()
|
||
}
|
||
fn ime_caret(&self, cx: &ToolContext) -> Option<(Point, Point)> {
|
||
let t = self.current(cx)?;
|
||
let lay = self.layout(&t);
|
||
let len = t.plain_text().len();
|
||
// The candidate window follows the clause being converted, else the caret.
|
||
let at = match &self.preedit {
|
||
Some(p) => p.range.start + p.active.as_ref().map_or(0, |r| r.start),
|
||
None => self.caret.min(self.anchor),
|
||
};
|
||
let (a, b) = vectorcraft_text::caret_position(&lay, at.min(len));
|
||
Some((t.xf * a, t.xf * b))
|
||
}
|
||
fn deactivate(&mut self, cx: &ToolContext) -> Vec<Action> {
|
||
self.finish(cx)
|
||
}
|
||
/// Editing ends when a command takes the text out of the selection (Deselect, another object
|
||
/// picked in the Layers panel) or removes it.
|
||
fn after_command(&mut self, cx: &ToolContext) -> Vec<Action> {
|
||
let Some(id) = self.editing else { return vec![] };
|
||
let mut cur = Some(id).filter(|i| cx.doc.node(*i).is_some());
|
||
while let Some(c) = cur {
|
||
if cx.selection.contains(c) {
|
||
return vec![];
|
||
}
|
||
cur = cx.doc.parent_of(c);
|
||
}
|
||
self.finish(cx)
|
||
}
|
||
/// After `text.create` / `text.createInPath` the engine selects the new object; edit it.
|
||
fn notify(&mut self, cx: &ToolContext, what: &str) {
|
||
if what == "text.editNew"
|
||
&& let Some(id) = cx.selection.objects.first().copied()
|
||
{
|
||
self.start_editing(id, 0);
|
||
let t = Self::text(cx, id);
|
||
self.fresh = t.filter(|t| matches!(t.kind, TextKind::Point)).map(|_| id);
|
||
// Placeholder text comes selected: typing replaces it.
|
||
self.caret = t.map_or(0, |t| edit::runs_len(&t.runs));
|
||
}
|
||
}
|
||
/// `{editing, start, end, caret, anchor, typing, composing}` — the Character panel styles
|
||
/// `start..end`.
|
||
fn options(&self) -> Value {
|
||
match self.editing {
|
||
Some(id) => {
|
||
// Offsets may exceed the text after Select All; callers clamp to the text length.
|
||
let (a, b) = self.sel();
|
||
json!({"editing": id.0, "start": a, "end": b, "caret": self.caret, "anchor": self.anchor, "typing": self.typing.is_some(), "composing": self.preedit.is_some()})
|
||
}
|
||
None => json!({"editing": null}),
|
||
}
|
||
}
|
||
/// `select {start, end}` / `selectAll` / `copy` (with `runs` of the selection) /
|
||
/// `commitTyping` (the caller commits the engine interaction).
|
||
fn set_option(&mut self, key: &str, v: &Value) {
|
||
match key {
|
||
"commitTyping" | "endTyping" => {
|
||
self.typing = None;
|
||
self.preedit = None;
|
||
}
|
||
"selectAll" if self.editing.is_some() => {
|
||
self.anchor = 0;
|
||
self.caret = usize::MAX / 4;
|
||
}
|
||
"select" if self.editing.is_some() => {
|
||
let g = |k: &str| v.get(k).and_then(Value::as_u64).map(|x| x as usize);
|
||
if let (Some(a), Some(b)) = (g("start"), g("end")) {
|
||
self.anchor = a;
|
||
self.caret = b;
|
||
}
|
||
}
|
||
"copy" => {
|
||
if let Ok(runs) = serde_json::from_value::<Vec<TextRun>>(v.clone()) {
|
||
self.clipboard = runs;
|
||
}
|
||
}
|
||
"stopEditing" => {
|
||
self.typing = None;
|
||
self.preedit = None;
|
||
self.editing = None;
|
||
}
|
||
_ => {}
|
||
}
|
||
}
|
||
fn overlays(&self, cx: &ToolContext) -> Vec<Overlay> {
|
||
let mut o = self.snap.guides().to_vec();
|
||
if let (Some((_, s)), Some(d)) = (self.press, self.drag) {
|
||
o.push(Overlay::Marquee(Rect::from_points(s, d)));
|
||
}
|
||
// Overflow markers on selected text.
|
||
for id in &cx.selection.objects {
|
||
if Some(*id) == self.editing {
|
||
continue;
|
||
}
|
||
if let Some(t) = Self::text(cx, *id) {
|
||
let lay = self.layout(t);
|
||
Self::overflow_marker(t, &lay, cx, &mut o);
|
||
}
|
||
}
|
||
let Some(t) = self.current(cx) else { return o };
|
||
let lay = self.layout(&t);
|
||
let len = t.plain_text().len();
|
||
// Frame / baseline path of the edited object.
|
||
let frame: Option<BezPath> = match &t.kind {
|
||
TextKind::Area { frame } => Some(frame.to_bezpath()),
|
||
TextKind::OnPath { path, .. } => Some(path.to_bezpath()),
|
||
TextKind::Point => None,
|
||
};
|
||
if let Some(mut f) = frame {
|
||
f.apply_affine(t.xf);
|
||
o.push(Overlay::Path { path: f, color: [79, 128, 255], width: 1.0, dashed: false });
|
||
}
|
||
let (a, b) = (self.caret.min(self.anchor).min(len), self.caret.max(self.anchor).min(len));
|
||
if let Some(pe) = &self.preedit {
|
||
// Marked text: a thin underline, a thick one under the clause being converted.
|
||
let under = |o: &mut Vec<Overlay>, r: Range<usize>, width: f32| {
|
||
for q in vectorcraft_text::selection_quads(&lay, r.start.min(len), r.end.min(len)) {
|
||
let (l, rr) = (t.xf * q[3], t.xf * q[2]);
|
||
o.push(Overlay::Path { path: vectorcraft_geom::Line::new(l, rr).to_path(0.1), color: [0, 0, 0], width, dashed: false });
|
||
}
|
||
};
|
||
under(&mut o, pe.range.clone(), 1.0);
|
||
match &pe.active {
|
||
Some(r) if !r.is_empty() => under(&mut o, pe.range.start + r.start..pe.range.start + r.end, 2.5),
|
||
_ => {
|
||
let at = pe.range.start + pe.active.as_ref().map_or(pe.range.len(), |r| r.start);
|
||
let (p, q) = vectorcraft_text::caret_position(&lay, at.min(len));
|
||
o.push(Overlay::Line { a: t.xf * p, b: t.xf * q, color: [0, 0, 0], dashed: false });
|
||
}
|
||
}
|
||
} else if a == b {
|
||
let (p, q) = vectorcraft_text::caret_position(&lay, self.caret.min(len));
|
||
o.push(Overlay::Line { a: t.xf * p, b: t.xf * q, color: [0, 0, 0], dashed: false });
|
||
} else {
|
||
for q in vectorcraft_text::selection_quads(&lay, a, b) {
|
||
o.push(Overlay::Highlight { quad: q.map(|p| t.xf * p), color: [60, 120, 255, 90] });
|
||
}
|
||
}
|
||
Self::overflow_marker(&t, &lay, cx, &mut o);
|
||
o
|
||
}
|
||
fn cursor(&self, cx: &ToolContext, p: Point, _m: Mods) -> Cursor {
|
||
if self.mode != Mode::Type && Self::path_at(cx, p, self.mode == Mode::Area).is_some() {
|
||
return Cursor::Crosshair;
|
||
}
|
||
Cursor::Text
|
||
}
|
||
}
|
||
|
||
#[cfg(test)]
|
||
#[path = "text_tests.rs"]
|
||
mod tests;
|