Files
vectorcraft/crates/tools/src/select.rs
T
bflatasticandClaude Opus 5.5 1706e84829 Fix #429: Type on a path brackets, flip and Type on a Path Options that keep the type in place
Type on a path could only be repositioned by Type on a Path Options, whose menu item sent
`{start: 0}`, so OK threw the text to the start of its path; nothing showed or dragged its
brackets. Now, as in Illustrator:

- Type on a path flows between a start and an end bracket (`TextKind::OnPath { end }`, None:
  the end of the path or once round a closed one; `TextKind::path_span`). Flipping
  (`TextObject::flip_on_path`) reverses the path keeping a closed path's first anchor and swaps
  the brackets, so the type keeps its stretch of the path.
- Type on a Path Options gains Align to Path (ascender, descender, center, baseline) and
  Spacing (glyphs spaced as if set that far above the path: closed up round the outside of
  curves, opened up round the inside), laid out by the text engine.
- `type.pathOptions {start?, end?, flip?, effect?, alignToPath?, spacing?, ids?}` sets them in
  one undo step; with none of them it queries. The menu item opens the dialog with the selected
  type's Effect, Flip, Align to Path and Spacing (dropdowns for the choices) and leaves the
  brackets alone, so OK as opened changes nothing.
- The Selection and Direct Selection tools show selected type on a path's path and its start,
  centre and end brackets (`tools::pathtype`, with a bracket cursor): dragging the start or end
  bracket sets where the type runs, dragging the centre bracket slides it along the path and,
  across the path, flips it (Cmd/Ctrl held: it only slides). Each drag is one undo step.
- Arc-length measuring moved to `vectorcraft_geom::ArcPath` (layout, the tools and
  `text.createInPath` share it). SVG export outlines path type whose end bracket, alignment or
  spacing `<textPath>` can't express.
- docs/mcp.md documents the command and the drags; ROADMAP updated; dialog strings translated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-08 12:50:25 +07:00

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//! The Selection tool (V): click/shift-click, marquee, move (Alt copies, Shift constrains; Smart
//! Guides, or with them off View › Snap to Point, snap it),
//! bounding-box scale (Shift proportional, Alt from centre) and rotate (outside corners, Shift 45°),
//! drag a live rectangle's corner widget to round its corners (Alt-click cycles their kind,
//! double-click opens the Corners dialog), double-click to enter isolation mode (Double Click To
//! Isolate), Cmd/Ctrl-click to select the object behind (Command Click to Select Objects Behind),
//! click or drag a ruler guide ([`crate::rulerguide`]), drag the brackets of type on a path
//! ([`crate::pathtype`]).
//! The bounding box stands at the selection's own angle after a rotation, so its handles scale
//! along the objects' axes. A handle drag resizes area type's frame (the type area) instead of
//! scaling its type: the text reflows at its size.
use serde_json::{Value, json};
use vectorcraft_doc::hit::{hit_test, marquee, objects_at};
use vectorcraft_doc::{NodeId, OrientedBox};
use vectorcraft_geom::{Affine, Point, Rect, Vec2};
use crate::bbox::{Handle, hit_handle, in_rotate_zone, move_delta, rotate_for_drag, scale_for_drag};
use crate::corners::{self, CornerDrag, over_widget};
use crate::guides::Targets;
use crate::pathtype::{self, BracketDrag, over_bracket};
use crate::rulerguide::GuideEdit;
use crate::{Action, Cursor, Mods, Overlay, PointerEvent, PointerKind, Tool, ToolContext, json_ids};
#[derive(Clone, Debug, Default)]
enum State {
#[default]
Idle,
/// Pressed on an object; becomes Moving after the drag threshold.
Moving {
start: Point,
began: bool,
/// Shift-pressed on this selected object: released without a drag, it leaves the
/// selection.
deselect: Option<NodeId>,
},
Scaling {
handle: Handle,
bx: OrientedBox,
/// Area type is selected: its frame resizes (`typeAreas`), its type keeps its size.
areas: bool,
},
Rotating {
center: Point,
start: Point,
},
Marquee {
start: Point,
cur: Point,
add: bool,
},
/// Dragging a Live Corners widget.
Corner(CornerDrag),
/// Dragging a bracket of type on a path.
Bracket(BracketDrag),
}
#[derive(Default)]
pub struct SelectionTool {
state: State,
measure: Option<(Point, String)>,
guides: Vec<Overlay>,
/// What a bounding-box handle being dragged snaps to.
targets: Option<Targets>,
moving: Option<MoveSnap>,
guide: GuideEdit,
}
/// Snapping for the selection moved as a whole, its targets gathered when the move begins: Smart
/// Guides line its bounds up with the other art; with them off, View → Snap to Point lands the
/// point it was grabbed by on an anchor or a ruler guide; Snap to Pixel puts its top-left on whole
/// pixels.
pub(crate) struct MoveSnap {
bounds: Option<Rect>,
targets: Option<Targets>,
points: Option<Targets>,
}
impl MoveSnap {
pub(crate) fn new(cx: &ToolContext) -> Self {
Self {
bounds: selection_bounds(cx),
targets: cx.smart_guides.then(|| Targets::collect(cx.doc, &cx.selection.objects, None)),
points: Targets::snap_to_point(cx, &cx.selection.objects),
}
}
/// The move by `d` of the selection grabbed at `start`, snapped, and its guides.
pub(crate) fn snap(&self, cx: &ToolContext, start: Point, mut d: Vec2) -> (Vec2, Vec<Overlay>) {
let mut guides = vec![];
if let Some(t) = &self.points {
let (q, ov) = t.snap_point(start + d, cx.tol(cx.snap_tolerance));
d = q - start;
guides = ov;
}
if let (Some(t), Some(b)) = (&self.targets, self.bounds) {
let (adj, ov) = t.snap_rect(b + d, cx.tol(5.0));
d += adj;
guides = ov;
}
if cx.snap_to_pixel
&& let Some(b) = self.bounds
{
d = Vec2::new((b.x0 + d.x).round() - b.x0, (b.y0 + d.y).round() - b.y0);
guides.clear();
}
(d, guides)
}
}
pub fn matrix_json(a: Affine) -> Value {
let c = a.as_coeffs();
json!([c[0], c[1], c[2], c[3], c[4], c[5]])
}
/// Selection bounds used for the bounding box: visual bounds with Use Preview Bounds, else
/// geometric bounds.
pub fn selection_bounds(cx: &ToolContext) -> Option<Rect> {
cx.doc.bounds_of(&cx.selection.objects, cx.preview_bounds)
}
/// [`selection_bounds`] square to the selection's own angle: the bounding box the Selection tool
/// shows and drags (rotated after a rotation).
pub fn selection_box(cx: &ToolContext) -> Option<OrientedBox> {
cx.doc.oriented_bounds(&cx.selection.objects, cx.preview_bounds)
}
/// What of the bounding box is under the pointer.
enum BoxHit {
Handle(Handle),
/// Just outside a corner.
Rotate,
}
/// The bounding-box handle or rotate zone under `p`.
fn box_hit(cx: &ToolContext, b: &OrientedBox, p: Point) -> Option<BoxHit> {
let (tol, lp) = (cx.tol(5.0), b.to_local(p));
if let Some(h) = hit_handle(b.rect, lp, tol) {
return Some(BoxHit::Handle(h));
}
in_rotate_zone(b.rect, lp, tol, cx.tol(18.0)).map(|_| BoxHit::Rotate)
}
impl SelectionTool {
fn drag_threshold(cx: &ToolContext) -> f64 {
cx.tol(3.0)
}
}
impl Tool for SelectionTool {
fn id(&self) -> &'static str {
"selection"
}
fn busy(&self) -> bool {
!matches!(self.state, State::Idle) || self.guide.busy()
}
fn pointer(&mut self, cx: &ToolContext, ev: &PointerEvent) -> Vec<Action> {
if let Some(out) = self.guide.pointer(cx, ev) {
return out;
}
let p = ev.pos;
let m = ev.mods;
match (ev.kind, self.state.clone()) {
(PointerKind::DoubleClick, _) => {
self.state = State::Idle;
if let Some(a) = corners::double_click(cx, p) {
return vec![a];
}
if crate::rulerguide::guide_at(cx, p).is_some() {
return vec![];
}
if let Some(h) = hit_test(cx.doc, p, cx.hit_options()) {
let top = h.top_object(cx.isolation);
if cx.double_click_isolate && cx.doc.node(top).is_some_and(|n| matches!(n.kind, vectorcraft_doc::NodeKind::Group { .. })) {
return vec![Action::Exec("object.isolate".into(), json!({ "id": top.0 }))];
}
if cx.doc.node(top).is_some_and(|n| matches!(n.kind, vectorcraft_doc::NodeKind::Text(_))) {
return vec![Action::SwitchTool("type".into())];
}
} else if cx.isolation.is_some() {
return vec![Action::Exec("object.exitIsolation".into(), json!({}))];
}
vec![]
}
(PointerKind::Down, _) => {
// 1. Live Corners widgets and type on a path's brackets, then the bounding-box
// handles of the current selection.
if let Some(c) = CornerDrag::hit(cx, ev) {
self.state = State::Corner(c);
return vec![];
}
if let Some(b) = BracketDrag::hit(cx, ev) {
self.state = State::Bracket(b);
return vec![];
}
if cx.show_bbox
&& let Some(bx) = selection_box(cx)
{
match box_hit(cx, &bx, p) {
Some(BoxHit::Handle(handle)) => {
let is_area = |id: &NodeId| cx.doc.node(*id).is_some_and(is_area_type);
let areas = cx.selection.objects.iter().any(is_area);
// Only area type: the step resizes type areas; anything else scales.
let label = if areas && cx.selection.objects.iter().all(is_area) { "Resize Type Area" } else { "Scale" };
// Smart Guides align what the handle moves with the other objects.
self.targets = cx.smart_guides.then(|| Targets::collect(cx.doc, &cx.selection.objects, None));
self.state = State::Scaling { handle, bx, areas };
return vec![Action::Begin(label.into())];
}
Some(BoxHit::Rotate) => {
self.state = State::Rotating { center: bx.center(), start: p };
return vec![Action::Begin("Rotate".into())];
}
None => {}
}
}
// 2. Ruler guides (over the art, as they are drawn).
if let Some(out) = self.guide.press(cx, ev) {
self.state = State::Idle;
return out;
}
// 3. Objects: Cmd/Ctrl-click selects the one under the selected one (cycling).
if m.cmd
&& cx.select_behind
&& let Some(behind) = object_behind(cx, p)
{
self.state = State::Moving { start: p, began: false, deselect: None };
return vec![Action::Exec("select.set".into(), json!({ "ids": [behind.0] }))];
}
match hit_test(cx.doc, p, cx.hit_options()) {
Some(h) => {
let top = h.top_object(cx.isolation);
let mut out = vec![];
let mut deselect = None;
if m.shift {
// A Shift-click takes a selected object out of the selection when it
// is released; a Shift-drag moves the selection, constrained.
if cx.selection.contains(top) {
deselect = Some(top);
} else {
out.push(Action::Exec("select.toggle".into(), json!({ "id": top.0 })));
}
} else if !cx.selection.contains(top) {
out.push(Action::Exec("select.set".into(), json!({ "ids": [top.0] })));
}
self.state = State::Moving { start: p, began: false, deselect };
out
}
None => {
self.state = State::Marquee { start: p, cur: p, add: m.shift };
vec![]
}
}
}
(PointerKind::Drag, State::Moving { start, began, .. }) => {
let mut out = vec![];
if !began {
if p.distance(start) < Self::drag_threshold(cx) {
return out;
}
out.push(Action::Begin(if m.alt { "Copy".into() } else { "Move".into() }));
self.moving = Some(MoveSnap::new(cx));
}
let mut d = move_delta(start, p, m.shift);
if let Some(snap) = &self.moving {
(d, self.guides) = snap.snap(cx, start, d);
}
self.state = State::Moving { start, began: true, deselect: None };
self.measure = Some((p, cx.offset_label(d.x, d.y)));
out.push(Action::Preview("object.transform".into(), json!({ "matrix": matrix_json(Affine::translate(d)), "copy": m.alt })));
out
}
(PointerKind::Drag, State::Scaling { handle, bx, areas }) => {
// Scale in the box's own frame: along the objects' axes when it is rotated.
let mut a = scale_for_drag(bx.rect, handle, bx.to_local(p), m.shift, m.alt);
self.guides.clear();
if let Some(t) = &self.targets {
(a, self.guides) = t.snap_scale(&bx, handle, a, m.shift, m.alt, cx.tol(5.0));
}
let nr = a.transform_rect_bbox(bx.rect);
self.measure = Some((p, cx.size_label(nr.width(), nr.height())));
let mut params = json!({ "matrix": matrix_json(bx.conjugate(a)), "copy": false });
if areas {
params["typeAreas"] = json!(true);
}
vec![Action::Preview("object.transform".into(), params)]
}
(PointerKind::Drag, State::Rotating { center, start, .. }) => {
let (a, deg) = rotate_for_drag(center, start, p, m.shift);
self.measure = Some((p, format!("{:.1}°", -deg)));
vec![Action::Preview("object.transform".into(), json!({ "matrix": matrix_json(a), "copy": false }))]
}
(PointerKind::Drag, State::Marquee { start, add, .. }) => {
self.state = State::Marquee { start, cur: p, add };
vec![]
}
(PointerKind::Drag, State::Corner(mut c)) => {
let out = c.drag(cx, p);
self.state = State::Corner(c);
out
}
(PointerKind::Up, State::Corner(c)) => {
self.state = State::Idle;
c.finish()
}
(PointerKind::Drag, State::Bracket(mut b)) => {
let out = b.drag(cx, p, m.cmd);
self.state = State::Bracket(b);
out
}
(PointerKind::Up, State::Bracket(b)) => {
self.state = State::Idle;
b.finish()
}
(PointerKind::Up, State::Moving { began, deselect, .. }) => {
self.state = State::Idle;
self.measure = None;
self.guides.clear();
self.moving = None;
match (began, deselect) {
(true, _) => vec![Action::Commit],
(false, Some(id)) => vec![Action::Exec("select.toggle".into(), json!({ "id": id.0 }))],
(false, None) => vec![],
}
}
(PointerKind::Up, State::Scaling { .. } | State::Rotating { .. }) => {
self.state = State::Idle;
self.measure = None;
self.guides.clear();
self.targets = None;
vec![Action::Commit]
}
(PointerKind::Up, State::Marquee { start, add, .. }) => {
self.state = State::Idle;
let r = Rect::from_points(start, p);
if r.width() < Self::drag_threshold(cx) && r.height() < Self::drag_threshold(cx) {
return if add { vec![] } else { vec![Action::Exec("select.none".into(), json!({}))] };
}
let ids: Vec<NodeId> = marquee(cx.doc, r, cx.isolation, false);
if add {
vec![Action::Exec("select.add".into(), json!({ "ids": json_ids(&ids) }))]
} else {
vec![Action::Exec("select.set".into(), json!({ "ids": json_ids(&ids) }))]
}
}
_ => vec![],
}
}
fn overlays(&self, cx: &ToolContext) -> Vec<Overlay> {
let mut o = pathtype::overlays(cx);
match &self.state {
State::Marquee { start, cur, .. } => o.push(Overlay::Marquee(Rect::from_points(*start, *cur))),
State::Corner(c) => o.extend(c.overlays(cx)),
_ => {}
}
o.extend(self.guides.iter().cloned());
o.extend(self.guide.overlays(cx));
if let Some((p, t)) = &self.measure {
o.push(Overlay::Measure { p: *p, text: t.clone() });
}
o
}
fn cursor(&self, cx: &ToolContext, p: Point, m: Mods) -> Cursor {
match self.state {
State::Rotating { .. } => return Cursor::Rotate,
State::Scaling { handle, bx, .. } => return handle_cursor(handle, bx.angle),
State::Moving { began: true, .. } => return Cursor::Arrow,
State::Corner(_) => return Cursor::CornerRadius,
State::Bracket(_) => return Cursor::PathBracket,
_ => {}
}
if self.guide.busy() {
return self.guide.cursor(cx, p).unwrap_or_default();
}
if over_widget(cx, p) {
return Cursor::CornerRadius;
}
if over_bracket(cx, p) {
return Cursor::PathBracket;
}
if cx.show_bbox
&& let Some(bx) = selection_box(cx)
{
match box_hit(cx, &bx, p) {
Some(BoxHit::Handle(h)) => return handle_cursor(h, bx.angle),
Some(BoxHit::Rotate) => return Cursor::Rotate,
None => {}
}
}
if let Some(c) = self.guide.cursor(cx, p) {
return c;
}
if let Some(h) = hit_test(cx.doc, p, cx.hit_options()) {
if cx.selection.contains(h.top_object(cx.isolation)) || m.alt {
return Cursor::Move;
}
return Cursor::Arrow;
}
Cursor::Arrow
}
}
/// Select Behind: of the objects under `p` (topmost first), the one below the lowest selected
/// one, back to the topmost after the bottom one; the topmost when none is selected.
fn object_behind(cx: &ToolContext, p: Point) -> Option<NodeId> {
let stack = objects_at(cx.doc, p, cx.hit_options(), cx.isolation);
let next = stack.iter().rposition(|id| cx.selection.contains(*id)).map_or(0, |i| i + 1);
stack.get(next).or(stack.first()).copied()
}
/// Is `n` area type (text in a frame) whose frame the tools reshape? Type in perspective isn't:
/// it transforms whole.
pub(crate) fn is_area_type(n: &vectorcraft_doc::Node) -> bool {
n.perspective.is_none() && matches!(&n.kind, vectorcraft_doc::NodeKind::Text(t) if matches!(t.kind, vectorcraft_doc::TextKind::Area { .. }))
}
/// The resize cursor for handle `h` of a box turned by `angle` (counter-clockwise degrees): the
/// handle that sits where `h` appears on screen, in 45° steps.
fn handle_cursor(h: Handle, angle: f64) -> Cursor {
let steps = if angle.is_finite() { (angle / 45.0).round() as i64 } else { 0 };
let h = Handle::ALL.get((h as i64 - steps).rem_euclid(8) as usize).copied().unwrap_or(h);
match h {
Handle::Top | Handle::Bottom => Cursor::ResizeV,
Handle::Left | Handle::Right => Cursor::ResizeH,
Handle::TopLeft | Handle::BottomRight => Cursor::ResizeNwSe,
Handle::TopRight | Handle::BottomLeft => Cursor::ResizeNeSw,
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::testutil::*;
use vectorcraft_doc::Selection;
fn ev(kind: PointerKind, x: f64, y: f64) -> PointerEvent {
PointerEvent::new(kind, x, y)
}
#[test]
fn click_selects_object() {
let (d, id) = doc_with_rect();
let s = Selection::default();
let p = paint();
let cx = cx(&d, &s, &p);
let mut t = SelectionTool::default();
let a = t.pointer(&cx, &ev(PointerKind::Down, 150.0, 150.0));
assert_eq!(a, vec![Action::Exec("select.set".into(), json!({"ids": [id.0]}))]);
assert!(t.pointer(&cx, &ev(PointerKind::Up, 150.0, 150.0)).is_empty());
}
/// #414: a press on a ruler guide picks it over the art, and drags it.
#[test]
fn a_press_on_a_ruler_guide_picks_it_over_the_art() {
let (mut d, _) = doc_with_rect();
d.guides.push(vectorcraft_doc::Guide { vertical: false, pos: 150.0 });
let s = Selection::default();
let p = paint();
let cx = cx(&d, &s, &p);
let mut t = SelectionTool::default();
assert_eq!(t.cursor(&cx, Point::new(160.0, 151.0), Mods::default()), Cursor::ResizeV);
let a = t.pointer(&cx, &ev(PointerKind::Down, 160.0, 151.0));
assert_eq!(a, vec![Action::Exec("guide.select".into(), json!({"indexes": [0]}))]);
assert!(t.busy());
let a = t.pointer(&cx, &ev(PointerKind::Drag, 160.0, 171.0));
assert_eq!(a[1], Action::Preview("guide.move".into(), json!({"dx": 0.0, "dy": 20.0, "copy": false})));
assert_eq!(t.pointer(&cx, &ev(PointerKind::Up, 160.0, 171.0)), vec![Action::Commit]);
assert!(!t.busy());
// A double-click there doesn't go through to the art.
assert!(t.pointer(&cx, &ev(PointerKind::DoubleClick, 160.0, 150.0)).is_empty());
}
#[test]
fn drag_moves_with_single_undo() {
let (d, id) = doc_with_rect();
let mut s = Selection::default();
s.add(id);
let p = paint();
let cx = cx(&d, &s, &p);
let mut t = SelectionTool::default();
assert!(t.pointer(&cx, &ev(PointerKind::Down, 150.0, 150.0)).is_empty());
let a = t.pointer(&cx, &ev(PointerKind::Drag, 160.0, 150.0));
assert_eq!(a[0], Action::Begin("Move".into()));
assert!(matches!(&a[1], Action::Preview(c, v) if c == "object.transform" && v["matrix"][4] == 10.0));
let a = t.pointer(&cx, &ev(PointerKind::Up, 160.0, 150.0));
assert_eq!(a, vec![Action::Commit]);
}
#[test]
fn shift_drag_on_a_selected_object_moves_it_constrained() {
let (d, id) = doc_with_rect();
let mut s = Selection::default();
s.add(id);
let p = paint();
let cx = cx(&d, &s, &p);
let mut t = SelectionTool::default();
let shift = |kind, x, y| ev(kind, x, y).with_mods(Mods { shift: true, ..Mods::default() });
// Pressing keeps the selection: nothing is toggled yet.
assert!(t.pointer(&cx, &shift(PointerKind::Down, 150.0, 150.0)).is_empty());
let a = t.pointer(&cx, &shift(PointerKind::Drag, 190.0, 160.0));
assert_eq!(a[0], Action::Begin("Move".into()));
assert!(
matches!(&a[1], Action::Preview(c, v) if c == "object.transform"
&& v["matrix"][4].as_f64().is_some_and(|x| x > 39.0) && v["matrix"][5] == 0.0),
"moved right, constrained to horizontal: {a:?}"
);
assert_eq!(t.pointer(&cx, &shift(PointerKind::Up, 190.0, 160.0)), vec![Action::Commit]);
}
#[test]
fn shift_click_toggles_an_object_on_release() {
let (d, id) = doc_with_rect();
let p = paint();
let shift = |kind, x, y| ev(kind, x, y).with_mods(Mods { shift: true, ..Mods::default() });
let toggle = vec![Action::Exec("select.toggle".into(), json!({"id": id.0}))];
// Selected: it leaves the selection when the click is released.
let mut s = Selection::default();
s.add(id);
let cx1 = cx(&d, &s, &p);
let mut t = SelectionTool::default();
assert!(t.pointer(&cx1, &shift(PointerKind::Down, 150.0, 150.0)).is_empty());
assert_eq!(t.pointer(&cx1, &shift(PointerKind::Up, 150.0, 150.0)), toggle);
// Not selected: it joins the selection at once, ready to be dragged.
let s = Selection::default();
let cx2 = cx(&d, &s, &p);
let mut t = SelectionTool::default();
assert_eq!(t.pointer(&cx2, &shift(PointerKind::Down, 150.0, 150.0)), toggle);
assert!(t.pointer(&cx2, &shift(PointerKind::Up, 150.0, 150.0)).is_empty());
}
#[test]
fn marquee_selects() {
let (d, id) = doc_with_rect();
let s = Selection::default();
let p = paint();
let cx = cx(&d, &s, &p);
let mut t = SelectionTool::default();
t.pointer(&cx, &ev(PointerKind::Down, 50.0, 50.0));
t.pointer(&cx, &ev(PointerKind::Drag, 120.0, 120.0));
assert_eq!(t.overlays(&cx).len(), 1);
let a = t.pointer(&cx, &ev(PointerKind::Up, 120.0, 120.0));
assert_eq!(a, vec![Action::Exec("select.set".into(), json!({"ids": [id.0]}))]);
}
#[test]
fn handle_drag_scales() {
let (d, id) = doc_with_rect();
let mut s = Selection::default();
s.add(id);
let p = paint();
let cx = cx(&d, &s, &p);
let mut t = SelectionTool::default();
assert_eq!(t.cursor(&cx, Point::new(200.0, 200.0), Mods::default()), Cursor::ResizeNwSe);
assert_eq!(t.pointer(&cx, &ev(PointerKind::Down, 200.0, 200.0)), vec![Action::Begin("Scale".into())]);
let a = t.pointer(&cx, &ev(PointerKind::Drag, 300.0, 300.0));
assert!(matches!(&a[0], Action::Preview(_, v) if v["matrix"][0] == 2.0));
assert_eq!(t.pointer(&cx, &ev(PointerKind::Up, 300.0, 300.0)), vec![Action::Commit]);
}
#[test]
fn handle_drag_snaps_to_the_other_objects_with_smart_guides() {
use vectorcraft_doc::{Appearance, Node};
let (mut d, _) = doc_with_rect();
let l = d.layers[0].id;
let id = d.alloc_id();
let r = Rect::new(250.0, 100.0, 300.0, 150.0);
d.insert(Some(l), 1, Node::path(id, vectorcraft_geom::shapes::rectangle(r), Appearance::default_art())).unwrap();
let mut s = Selection::default();
s.add(id);
let p = paint();
let mut c = cx(&d, &s, &p);
let height = |a: &[Action]| {
let Action::Preview(_, v) = &a[0] else { panic!("{a:?}") };
v["matrix"][3].as_f64().unwrap() * 50.0
};
// The bottom handle, dragged near the neighbour's bottom edge (y = 200), lands on it.
let mut t = SelectionTool::default();
t.pointer(&c, &ev(PointerKind::Down, 275.0, 150.0));
let a = t.pointer(&c, &ev(PointerKind::Drag, 275.0, 197.0));
assert!((height(&a) - 100.0).abs() < 1e-9, "{a:?}");
assert!(t.overlays(&c).iter().any(|o| matches!(o, Overlay::Line { .. })));
t.pointer(&c, &ev(PointerKind::Up, 275.0, 197.0));
assert!(!t.overlays(&c).iter().any(|o| matches!(o, Overlay::Line { .. })));
// Smart Guides off: the edge follows the pointer.
c.smart_guides = false;
t.pointer(&c, &ev(PointerKind::Down, 275.0, 150.0));
let a = t.pointer(&c, &ev(PointerKind::Drag, 275.0, 197.0));
assert!((height(&a) - 97.0).abs() < 1e-9, "{a:?}");
}
#[test]
fn handle_drag_of_a_turned_box_snaps_on_the_page() {
use vectorcraft_doc::{Appearance, Node};
let matrix = |a: &[Action]| {
let Action::Preview(_, v) = &a[0] else { panic!("{a:?}") };
let m: Vec<f64> = v["matrix"].as_array().unwrap().iter().map(|x| x.as_f64().unwrap()).collect();
Affine::new([m[0], m[1], m[2], m[3], m[4], m[5]])
};
// A 50 pt square beside the 100..200 rect, turned about its centre (275, 125).
for (turn, low) in [(90.0_f64, 150.0), (45.0, 125.0 + 25.0 * std::f64::consts::SQRT_2)] {
let (mut d, _) = doc_with_rect();
let l = d.layers[0].id;
let id = d.alloc_id();
let r = Rect::new(250.0, 100.0, 300.0, 150.0);
d.insert(Some(l), 1, Node::path(id, vectorcraft_geom::shapes::rectangle(r), Appearance::default_art())).unwrap();
let c = Point::new(275.0, 125.0);
d.node_mut(id)
.unwrap()
.transform(Affine::translate(c.to_vec2()) * Affine::rotate(turn.to_radians()) * Affine::translate(-c.to_vec2()), false);
let mut s = Selection::default();
s.add(id);
let p = paint();
let cx = cx(&d, &s, &p);
let bx = selection_box(&cx).unwrap();
assert_ne!(bx.angle, 0.0);
// The handle at the lowest point of the shape: a side at 90°, a corner at 45°.
let grab = Point::new(275.0, low);
assert!(Handle::ALL.iter().any(|h| (bx.to_doc() * h.pos(bx.rect)).distance(grab) < 1e-6), "{bx:?}");
let mut t = SelectionTool::default();
assert_eq!(t.pointer(&cx, &ev(PointerKind::Down, grab.x, grab.y)), vec![Action::Begin("Scale".into())]);
// Dragged near the neighbour's bottom edge (y = 200), it lands on it.
let a = t.pointer(&cx, &ev(PointerKind::Drag, 275.0, 197.0));
let landed = matrix(&a) * grab;
assert!((landed.y - 200.0).abs() < 1e-6 && (landed.x - 275.0).abs() < 1e-6, "{turn}: {landed:?}");
assert!(t.overlays(&cx).iter().any(|o| matches!(o, Overlay::Line { .. })));
t.pointer(&cx, &ev(PointerKind::Up, 275.0, 197.0));
}
}
#[test]
fn handle_drag_on_area_type_resizes_its_frame() {
let (d, text) = doc_with_area_type();
let p = paint();
let mut s = Selection::default();
s.add(text);
let cx1 = cx(&d, &s, &p);
let mut t = SelectionTool::default();
// Bottom-right handle of the 120 × 40 frame at (300, 300).
assert_eq!(t.pointer(&cx1, &ev(PointerKind::Down, 420.0, 340.0)), vec![Action::Begin("Resize Type Area".into())]);
let a = t.pointer(&cx1, &ev(PointerKind::Drag, 460.0, 400.0));
assert!(matches!(&a[0], Action::Preview(c, v) if c == "object.transform" && v["typeAreas"] == true), "{a:?}");
assert_eq!(t.pointer(&cx1, &ev(PointerKind::Up, 460.0, 400.0)), vec![Action::Commit]);
// With another object the step is a scale, still resizing the type area.
let rect = d.layers[0].children().unwrap()[0].id;
s.add(rect);
let cx2 = cx(&d, &s, &p);
assert_eq!(t.pointer(&cx2, &ev(PointerKind::Down, 420.0, 340.0)), vec![Action::Begin("Scale".into())]);
let a = t.pointer(&cx2, &ev(PointerKind::Drag, 460.0, 400.0));
assert!(matches!(&a[0], Action::Preview(_, v) if v["typeAreas"] == true), "{a:?}");
t.pointer(&cx2, &ev(PointerKind::Up, 460.0, 400.0));
// Without area type the drag scales as before.
let mut s = Selection::default();
s.add(rect);
let cx3 = cx(&d, &s, &p);
t.pointer(&cx3, &ev(PointerKind::Down, 200.0, 200.0));
let a = t.pointer(&cx3, &ev(PointerKind::Drag, 300.0, 300.0));
assert!(matches!(&a[0], Action::Preview(_, v) if v.get("typeAreas").is_none()), "{a:?}");
}
#[test]
fn turned_box_handles_turn_and_scale_along_the_object() {
let (mut d, id) = doc_with_rect();
let c = Point::new(150.0, 150.0);
let turn = Affine::translate(c.to_vec2()) * Affine::rotate(-std::f64::consts::FRAC_PI_4) * Affine::translate(-c.to_vec2());
d.node_mut(id).unwrap().transform(turn, false);
let mut s = Selection::default();
s.add(id);
let p = paint();
let cx = cx(&d, &s, &p);
// The Right handle sits up and to the right, where a diagonal cursor fits it.
let k = 50.0 * std::f64::consts::FRAC_1_SQRT_2;
let right = Point::new(150.0 + k, 150.0 - k);
let mut t = SelectionTool::default();
assert_eq!(t.cursor(&cx, right, Mods::default()), Cursor::ResizeNeSw);
// The page box's corner is no handle any more.
assert_ne!(t.cursor(&cx, Point::new(150.0 + 2.0 * k, 150.0 - 2.0 * k), Mods::default()), Cursor::ResizeNeSw);
assert_eq!(t.pointer(&cx, &ev(PointerKind::Down, right.x, right.y)), vec![Action::Begin("Scale".into())]);
let a = t.pointer(&cx, &ev(PointerKind::Drag, right.x + k, right.y - k));
let Action::Preview(_, v) = &a[0] else { panic!("{a:?}") };
// Doubling the width along 45° about the left side: the left handle stays put.
let m: Vec<f64> = v["matrix"].as_array().unwrap().iter().map(|x| x.as_f64().unwrap()).collect();
let m = Affine::new([m[0], m[1], m[2], m[3], m[4], m[5]]);
let left = Point::new(150.0 - k, 150.0 + k);
assert!((m * left).distance(left) < 1e-9);
assert!((m * right).distance(Point::new(right.x + k, right.y - k)) < 1e-9);
}
#[test]
fn click_empty_deselects() {
let (d, _) = doc_with_rect();
let s = Selection::default();
let p = paint();
let cx = cx(&d, &s, &p);
let mut t = SelectionTool::default();
t.pointer(&cx, &ev(PointerKind::Down, 400.0, 400.0));
assert_eq!(t.pointer(&cx, &ev(PointerKind::Up, 400.0, 400.0)), vec![Action::Exec("select.none".into(), json!({}))]);
}
}