Files
vectorcraft/crates/tools/src/select.rs
T
bflatasticandClaude Opus 5.5 1d14f337db Fix #511: Live Corners on any path's corners (stars, polygons, pen paths)
Corner widgets only ever showed on live rectangles: CornerWidgets::of bailed
out unless the selection's live shape was LiveShape::Rectangle, and
object.setLiveShape only edited rectangle radii. A star is a plain path, so it
had no widgets with either selection tool.

- geom::corners: the corners of any path (anchors without handles between two
  straight sides) and the path with them cut round, inverted round or
  chamfered, each corner a circle tangent to both sides, its radius no larger
  than takes the cut halfway along its shorter side. Rectangles now cut their
  corners with it (bit-identical anchors and layout).
- doc::corners::LiveCorners/set_corners: one model for a live rectangle's,
  a live polygon's (new radii/kinds) and any other path's corners (new
  LiveShape::Path keeping the uncut outline, plain again once nothing is cut);
  radii scale with transforms (Scale Corners) and stay circular.
- object.setLiveShape takes anchor indices for `corners` on any path; polygons
  keep a shared radius as their sides change.
- Widgets: Direct Selection on any path, Selection on live rectangles and
  polygons; placed on each corner's bisector, the drag follows it, the red
  limit outline marks corners at their own limit; the angle preference and
  View > Hide Corner Widget apply. Corners dialog and the Properties and
  Transform panels' Corner Radius (now on polygons too) work on them.
- Tests for the star, the polygon and a pen path in geom, doc, tools, engine
  and ui-egui; docs and ROADMAP.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-08 23:05:41 +07:00

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//! The Selection tool (V): click/shift-click, marquee (Shift-drag toggles the objects it reaches:
//! the selected ones are deselected, the others selected), 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 or polygon'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`]), double-click the type widget to convert point type to area type and back
//! ([`crate::typewidget`]).
//! 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::typewidget;
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,
/// Shift: the objects inside leave the selection if selected, else join it.
toggle: 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).styled(cx)),
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.snap_tol());
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, false).or_else(|| typewidget::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, false) {
self.state = State::Corner(c);
return vec![];
}
if let Some(b) = BracketDrag::hit(cx, ev) {
self.state = State::Bracket(b);
return vec![];
}
// The type widget answers a double-click only: its clicks neither drag nor deselect.
if typewidget::over_widget(cx, p) {
self.state = State::Idle;
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).styled(cx));
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, toggle: 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 = cx.measurement_labels.then(|| (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.snap_tol());
}
let nr = a.transform_rect_bbox(bx.rect);
self.measure = cx.transform_tools_guides.then(|| (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 = cx.transform_tools_guides.then(|| (p, format!("{:.1}°", -deg)));
vec![Action::Preview("object.transform".into(), json!({ "matrix": matrix_json(a), "copy": false }))]
}
(PointerKind::Drag, State::Marquee { start, toggle, .. }) => {
self.state = State::Marquee { start, cur: p, toggle };
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, toggle, .. }) => {
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 toggle { vec![] } else { vec![Action::Exec("select.none".into(), json!({}))] };
}
let ids: Vec<NodeId> = marquee(cx.doc, r, cx.isolation, false);
vec![Action::Exec(if toggle { "select.toggle" } else { "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, false) {
return Cursor::CornerRadius;
}
if over_bracket(cx, p) {
return Cursor::PathBracket;
}
if typewidget::over_widget(cx, p) {
return Cursor::TypeWidget;
}
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::new(false, 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]}))]);
}
/// Shift-drag a marquee: the objects it reaches toggle (#483), so selected ones can be
/// taken out of the selection; a Shift-click on empty canvas leaves the selection alone.
#[test]
fn shift_marquee_toggles() {
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 shift = Mods { shift: true, ..Default::default() };
t.pointer(&cx, &ev(PointerKind::Down, 50.0, 50.0).with_mods(shift));
t.pointer(&cx, &ev(PointerKind::Drag, 120.0, 120.0).with_mods(shift));
let a = t.pointer(&cx, &ev(PointerKind::Up, 120.0, 120.0).with_mods(shift));
assert_eq!(a, vec![Action::Exec("select.toggle".into(), json!({"ids": [id.0]}))]);
t.pointer(&cx, &ev(PointerKind::Down, 50.0, 50.0).with_mods(shift));
assert!(t.pointer(&cx, &ev(PointerKind::Up, 50.0, 50.0).with_mods(shift)).is_empty());
}
#[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:?}");
}
/// Smart Guides › Measurement Labels, Transform Tools and Snapping Tolerance (#394): the
/// readouts while moving and while scaling each follow their option; the tolerance sets how
/// far a dragged handle is pulled.
#[test]
fn smart_guide_display_preferences_drive_the_readouts_and_the_pull() {
use vectorcraft_doc::{Appearance, Node};
let (mut d, _) = doc_with_rect();
let l = d.layers[0].id;
let id = d.alloc_id();
d.insert(Some(l), 1, Node::path(id, vectorcraft_geom::shapes::rectangle(Rect::new(250.0, 100.0, 300.0, 150.0)), Appearance::default_art()))
.unwrap();
let mut s = Selection::default();
s.add(id);
let p = paint();
let measures = |t: &SelectionTool, c: &ToolContext| t.overlays(c).iter().filter(|o| matches!(o, Overlay::Measure { .. })).count();
let height = |a: &[Action]| {
let Action::Preview(_, v) = &a[0] else { panic!("{a:?}") };
v["matrix"][3].as_f64().unwrap() * 50.0
};
// Moving: the offset readout is a measurement label.
for on in [true, false] {
let c = ToolContext { measurement_labels: on, ..cx(&d, &s, &p) };
let mut t = SelectionTool::default();
t.pointer(&c, &ev(PointerKind::Down, 275.0, 125.0));
t.pointer(&c, &ev(PointerKind::Drag, 285.0, 135.0));
assert_eq!(measures(&t, &c), usize::from(on), "measurement labels {on}");
t.pointer(&c, &ev(PointerKind::Up, 285.0, 135.0));
}
// Scaling by a handle: the size readout belongs to Transform Tools.
for on in [true, false] {
let c = ToolContext { transform_tools_guides: on, ..cx(&d, &s, &p) };
let mut t = SelectionTool::default();
t.pointer(&c, &ev(PointerKind::Down, 275.0, 150.0));
t.pointer(&c, &ev(PointerKind::Drag, 275.0, 180.0));
assert_eq!(measures(&t, &c), usize::from(on), "transform tools {on}");
t.pointer(&c, &ev(PointerKind::Up, 275.0, 180.0));
}
// Snapping Tolerance: 6 px from the neighbour's bottom edge is beyond 4, within 8.
for (tol, want) in [(4.0, 94.0), (8.0, 100.0), (0.0, 94.0)] {
let c = ToolContext { snapping_tolerance: tol, ..cx(&d, &s, &p) };
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, 194.0));
assert!((height(&a) - want).abs() < 1e-9, "tolerance {tol}: {a:?}");
t.pointer(&c, &ev(PointerKind::Up, 275.0, 194.0));
}
}
#[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!({}))]);
}
}