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fcd72747cd
* M6: make list boxes directly selectable and scroll to selection (#1524) - In-place selection: List boxes are rendered directly on the page and selectable in place. Clicking an option row selects it immediately; Ctrl/Cmd-clicking toggles items in multi-select lists, and Shift-clicking selects ranges, without opening a popup menu. - Appearance and scroll (/TI): When options are selected, /TI (top index) is automatically adjusted so the selected items are scrolled into view within the widget's visible rows, and option rows and selection highlights are drawn into the appearance stream. - Unit and UI tests: Added tests in pdfcraft-forms verifying /TI scrolling and appearance generation for multi-select lists, and UI tests in pdfcraft-ui-egui covering in-place click and Ctrl-click toggling. Also ensured test harness in reload.rs explicitly sets language to en. Fixes #1524 * List boxes: keep the engine's page appearance, consume arrow keys Drop the overpaint of every fillable list box with an egui mock (it ignored the PDF's fonts, colours and /MK /R; the engine redraws the appearance with the new /TI), and consume ArrowUp/ArrowDown in the list overlay so they don't also scroll the page. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Brandon Thomas <echelon@gmail.com> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
673 lines
34 KiB
Rust
673 lines
34 KiB
Rust
//! Filling in forms on the page (execution plan M6; Acrobat fills fields in every viewing mode).
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//!
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//! Text fields open an in-place editor over the widget (Enter or clicking away commits, Escape
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//! cancels, Tab moves to the next field). Check boxes and radio buttons toggle on click. List
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//! boxes are directly selectable in-place on the page (clicking picks an option; Ctrl-click
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//! toggles on multi-select lists). Combo boxes open a list of their options. Every change is one
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//! undoable engine edit.
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use std::collections::HashSet;
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use egui::{Color32, CornerRadius, Rect, Stroke, vec2};
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use pdfcraft_engine::{Edit, FieldValue, FormField, FormFieldKind, FormWidget, field_flags, form_appearance};
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use pdfcraft_render::DocInfo;
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use crate::canvas::{DocView, PageXform};
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use crate::theme::Tokens;
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const FOCUS_BLUE: Color32 = Color32::from_rgb(0x14, 0x73, 0xE6);
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/// Background of the in-place text field editor, the same in every theme.
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const FIELD_FILL: Color32 = Color32::from_rgb(0xFF, 0xFF, 0xF4);
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/// The field being edited.
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#[derive(Clone, Debug, PartialEq)]
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pub struct Focus {
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pub name: String,
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/// Which of the field's widgets (a field can appear on several pages).
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pub widget: usize,
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/// Text being typed (text fields).
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pub text: String,
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/// Choices picked so far (list boxes with multiple selection).
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pub picked: Vec<String>,
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pub request_focus: bool,
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/// Select the whole value when the editor opens (entered with Tab), so typing replaces it.
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pub select_all: bool,
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/// Where the press that opened the editor landed: the editor puts its caret there and takes
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/// over the drag, so press-and-drag selects text in a field that was not focused (#2213).
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pub press: Option<egui::Pos2>,
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/// Date fields: the month the calendar shows (year, month 1–12), and where it was drawn.
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pub calendar: Option<(i32, u32)>,
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pub calendar_rect: Option<egui::Rect>,
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}
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#[derive(Clone, Debug, Default)]
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pub struct FormView {
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pub focus: Option<Focus>,
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/// The draft whose edit is queued (`DocView::pending_edit`): if the field refuses the value,
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/// the editor reopens with it rather than losing the typing.
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pub(crate) committed: Option<Focus>,
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/// A press on a text field committed the field before it (#2213). Until the button is
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/// released, that field losing focus to the same gesture must not commit it again: a
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/// refused value would be validated (and alerted) twice.
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pub(crate) pressed: bool,
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/// Fields modified by the user whose appearance stream has not been rasterized by the render worker yet.
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/// Tracked as (field_name, page_index) so committed edits stay immediately visible without flicker.
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pub unbaked: HashSet<(String, usize)>,
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/// A message for the app to show (e.g. "buttons run JavaScript").
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pub notice: Option<FormNotice>,
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/// A push button was clicked: (its field name, what it does).
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pub button: Option<(String, pdfcraft_engine::form_scripts::ButtonAction)>,
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}
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/// A form message for the app to show, with document data kept separate so the visible
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/// text follows the UI language.
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#[derive(Clone, Debug)]
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pub enum FormNotice {
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/// Filling is blocked by the document's security settings.
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Security,
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/// A read-only field was clicked (its name).
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ReadOnly(String),
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/// A push button with no action was clicked (its name).
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NoAction(String),
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}
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fn widget_rect(xf: &PageXform, info: &DocInfo, page: usize, r: [f64; 4]) -> Rect {
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xf.user_rect(info, page, [r[0] as f32, r[1] as f32, r[2] as f32, r[3] as f32])
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}
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fn fillable(f: &FormField) -> bool {
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!f.read_only() && !matches!(f.kind, FormFieldKind::PushButton | FormFieldKind::Signature)
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}
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fn open_focus(f: &FormField, widget: usize) -> Focus {
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Focus {
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name: f.name.clone(),
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widget,
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text: f.value.first().cloned().unwrap_or_default(),
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picked: f.value.clone(),
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request_focus: true,
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select_all: false,
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press: None,
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calendar: None,
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calendar_rect: None,
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}
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}
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/// Where the pointer is relative to one page's form widgets.
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#[derive(Clone, Copy, Debug, PartialEq, Eq)]
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pub(crate) enum FieldPointer {
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/// Not over a field.
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Away,
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/// Over a field, which has set the cursor. Nothing is pressed, so the layers below still see
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/// the hover, but they must not replace the cursor: a check box drawn with a glyph, or set
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/// on printed text, is a button, not text to select.
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Over,
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/// The field owns the press or click.
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Owned,
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}
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/// Clicks on form widgets of one page.
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#[allow(clippy::too_many_arguments)]
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pub(crate) fn page_input(
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ui: &egui::Ui,
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resp: &egui::Response,
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xf: &PageXform,
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page: usize,
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info: &DocInfo,
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form: &[FormField],
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allowed: bool,
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view: &mut DocView,
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) -> FieldPointer {
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let pointer = ui.input(|i| i.pointer.hover_pos());
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let Some(p) = pointer.filter(|p| xf.rect.contains(*p)) else { return FieldPointer::Away };
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let hit = form.iter().find_map(|f| {
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f.widgets
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.iter()
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.enumerate()
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.find(|(_, w)| w.page == Some(page) && !w.hidden && widget_rect(xf, info, page, w.rect).contains(p))
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.map(|(i, w)| (f, i, w))
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});
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let Some((f, wi, w)) = hit else { return FieldPointer::Away };
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// Empty signature fields are signed by clicking them (Use a certificate); push buttons run
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// their action.
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let pressable = f.kind == FormFieldKind::PushButton && !f.read_only() && f.button.is_some();
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let usable = allowed && (fillable(f) || pressable || f.kind == FormFieldKind::Signature);
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ui.ctx().set_cursor_icon(match (usable, f.kind) {
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(false, _) => egui::CursorIcon::NotAllowed,
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(true, FormFieldKind::Text) => egui::CursorIcon::Text,
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_ => egui::CursorIcon::PointingHand,
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});
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// A text field opens on the press rather than the click, so a drag that starts on it
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// selects its text (#2213).
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let pressed = f.kind == FormFieldKind::Text && usable && resp.is_pointer_button_down_on() && ui.input(|i| i.pointer.primary_pressed());
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if pressed && view.forms.focus.as_ref().is_none_or(|x| x.name != f.name || x.widget != wi) {
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commit(view, form);
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view.forms.focus = Some(Focus { press: Some(p), ..open_focus(f, wi) });
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view.forms.pressed = true;
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}
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if !resp.clicked() {
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return if resp.is_pointer_button_down_on() { FieldPointer::Owned } else { FieldPointer::Over };
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}
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if !allowed {
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view.forms.notice = Some(FormNotice::Security);
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return FieldPointer::Owned;
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}
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match f.kind {
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_ if f.read_only() => view.forms.notice = Some(FormNotice::ReadOnly(f.name.clone())),
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FormFieldKind::PushButton => match &f.button {
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Some(a) => view.forms.button = Some((f.name.clone(), a.clone())),
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None => view.forms.notice = Some(FormNotice::NoAction(f.name.clone())),
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},
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FormFieldKind::Signature => view.sign.field = Some(f.name.clone()),
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FormFieldKind::CheckBox => {
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view.forms.focus = None;
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view.pending_edit = Some(Edit::SetFieldValue { name: f.name.clone(), value: FieldValue::Check(f.value.is_empty()) });
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}
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FormFieldKind::Radio => {
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view.forms.focus = None;
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let on = w.on_state.clone();
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// Clicking the selected button again turns it off unless the group forbids it.
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let value = if f.value.first() == on.as_ref() && !f.has(field_flags::NO_TOGGLE_TO_OFF) { None } else { on };
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if value.as_ref() != f.value.first() {
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view.pending_edit = Some(Edit::SetFieldValue { name: f.name.clone(), value: FieldValue::Radio(value) });
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}
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}
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// The press already committed the previous field and opened this one (above), unless
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// press and release came in one frame. Committing again would re-run a validation that
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// refused the value on the press.
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FormFieldKind::Text if !ui.input(|i| i.pointer.primary_pressed()) => {
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// An editor opened by the press cannot be hit until a frame has laid it out: the
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// release lands on the page and would take its focus away.
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if let Some(x) = view.forms.focus.as_mut().filter(|x| x.name == f.name && x.widget == wi) {
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x.request_focus = true;
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}
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}
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FormFieldKind::Text | FormFieldKind::Combo => {
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if view.forms.focus.as_ref().is_none_or(|x| x.name != f.name || x.widget != wi) {
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commit(view, form);
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view.forms.focus = Some(open_focus(f, wi));
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}
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}
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FormFieldKind::List => {
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commit(view, form);
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view.forms.focus = Some(open_focus(f, wi));
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let r = widget_rect(xf, info, page, w.rect);
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let height_pt = if matches!(w.rotation, 90 | 270) { (w.rect[2] - w.rect[0]).max(1.0) } else { (w.rect[3] - w.rect[1]).max(1.0) };
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let zoom = (r.height() as f64) / height_pt;
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let y_pt = (p.y - r.min.y) as f64 / zoom;
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let rows = w.list.unwrap_or(form_appearance::ListRows { top: 0, inset: 2.0, row: 12.0 * 1.15, size: 12.0 });
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let picked_indices: Vec<usize> = f.value.iter().filter_map(|v| f.options.iter().position(|(e, _)| e == v)).collect();
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let top = form_appearance::ListRows::top_showing(rows.top, &picked_indices, rows.visible(height_pt), f.options.len());
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if let Some(opt_idx) = rows.option_at(top, y_pt).filter(|&i| i < f.options.len()) {
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let export = &f.options[opt_idx].0;
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let ctrl = ui.input(|i| i.modifiers.command || i.modifiers.ctrl);
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let shift = ui.input(|i| i.modifiers.shift);
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let multi = f.has(field_flags::MULTI_SELECT);
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let new_value = if multi && ctrl {
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let mut picked = f.value.clone();
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if let Some(pos) = picked.iter().position(|x| x == export) {
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picked.remove(pos);
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} else {
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picked.push(export.clone());
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}
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FieldValue::Choice(picked)
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} else if multi && shift && !f.value.is_empty() {
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let anchor = f.value.last().and_then(|last| f.options.iter().position(|(e, _)| e == last)).unwrap_or(opt_idx);
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let (min, max) = (anchor.min(opt_idx), anchor.max(opt_idx));
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let picked = f.options[min..=max].iter().map(|(e, _)| e.clone()).collect();
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FieldValue::Choice(picked)
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} else {
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FieldValue::Choice(vec![export.clone()])
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};
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if new_value != FieldValue::Choice(f.value.clone()) {
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view.pending_edit = Some(Edit::SetFieldValue { name: f.name.clone(), value: new_value });
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}
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}
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}
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}
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FieldPointer::Owned
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}
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/// The edit the focused field's draft makes, if it differs from the field's value.
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pub(crate) fn draft_edit(focus: &Focus, form: &[FormField]) -> Option<Edit> {
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let f = form.iter().find(|f| f.name == focus.name)?;
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let value = match f.kind {
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FormFieldKind::Text if f.value.first().map(String::as_str).unwrap_or("") != focus.text => FieldValue::Text(focus.text.clone()),
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_ => return None,
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};
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Some(Edit::SetFieldValue { name: f.name.clone(), value })
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}
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/// Close the focused field's editor, queueing the edit for its draft if it differs from the
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/// field's value.
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pub(crate) fn commit(view: &mut DocView, form: &[FormField]) {
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let Some(focus) = view.forms.focus.take() else { return };
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if let Some(edit) = draft_edit(&focus, form) {
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view.pending_edit = Some(edit);
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view.forms.committed = Some(focus);
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}
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}
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const MONTHS: [&str; 12] = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
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/// The date picker under a focused date field. Returns the picked date, formatted with the
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/// field's own format.
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fn calendar(ctx: &egui::Context, view: &mut DocView, field: egui::Rect, fmt: &str, today: (i64, u32, u32)) -> Option<String> {
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use pdfcraft_engine::form_scripts::{DateTime, format_date, parse_date};
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let fx = view.forms.focus.as_mut()?;
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let (mut y, mut m) = fx.calendar.unwrap_or_else(|| match parse_date(&fx.text, fmt) {
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Some(d) => (d.y, d.m),
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None => (today.0 as i32, today.1),
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});
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let current = parse_date(&fx.text, fmt);
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let mut picked = None;
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let area = egui::Area::new(egui::Id::new(("date-picker", view.id.0)))
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.order(egui::Order::Foreground)
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.fixed_pos(field.left_bottom() + vec2(0.0, 2.0))
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.show(ctx, |ui| {
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egui::Frame::popup(ui.style()).show(ui, |ui| {
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ui.horizontal(|ui| {
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if ui.small_button("‹").on_hover_text(tl!("Previous month")).clicked() {
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(y, m) = if m == 1 { (y - 1, 12) } else { (y, m - 1) };
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}
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ui.label(
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egui::RichText::new(crate::i18n::fmt(
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tl!("{month} {y}"),
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&[("month", tl!(MONTHS[(m.clamp(1, 12) - 1) as usize])), ("y", &y.to_string())],
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))
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.strong(),
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);
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if ui.small_button("›").on_hover_text(tl!("Next month")).clicked() {
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(y, m) = if m == 12 { (y + 1, 1) } else { (y, m + 1) };
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}
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});
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// Weekday of the 1st (0 = Sunday), Zeller-style via days since 1970-01-01 (a Thursday).
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let days_from_civil = |y: i32, m: u32, d: u32| -> i64 {
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let (y, m) = if m <= 2 { (y as i64 - 1, m as i64 + 9) } else { (y as i64, m as i64 - 3) };
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let era = y.div_euclid(400);
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let yoe = y - era * 400;
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let doy = (153 * m + 2) / 5 + d as i64 - 1;
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era * 146_097 + yoe * 365 + yoe / 4 - yoe / 100 + doy - 719_468
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};
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let first = (days_from_civil(y, m, 1) + 4).rem_euclid(7) as usize;
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let len = (days_from_civil(if m == 12 { y + 1 } else { y }, if m == 12 { 1 } else { m + 1 }, 1) - days_from_civil(y, m, 1)) as usize;
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egui::Grid::new(("date-grid", view.id.0)).spacing([4.0, 2.0]).show(ui, |ui| {
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for d in ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"] {
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ui.label(egui::RichText::new(tl_ctx!("calendar weekday", d)).small());
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}
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ui.end_row();
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for cell in 0..(first + len).div_ceil(7) * 7 {
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if cell >= first && cell < first + len {
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let day = (cell - first + 1) as u32;
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let selected = current.is_some_and(|c| (c.y, c.m, c.d) == (y, m, day));
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let is_today = (today.0 as i32, today.1, today.2) == (y, m, day);
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let mut text = egui::RichText::new(day.to_string());
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if is_today {
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text = text.strong();
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}
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if ui
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.selectable_label(selected, text)
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.on_hover_text(crate::i18n::fmt(
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tl!("{month} {day}, {y}"),
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&[
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("month", tl_ctx!("calendar date", MONTHS[(m - 1) as usize])),
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("day", &day.to_string()),
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("y", &y.to_string()),
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],
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))
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.clicked()
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{
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picked = Some(format_date(DateTime { y, m, d: day, hh: 0, mm: 0, ss: 0 }, fmt));
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}
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} else {
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ui.label("");
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}
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if cell % 7 == 6 {
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ui.end_row();
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}
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}
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});
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});
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});
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if let Some(fx) = view.forms.focus.as_mut() {
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fx.calendar = Some((y, m));
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fx.calendar_rect = Some(area.response.rect);
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}
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picked
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}
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/// Paint focus and hover frames on a page.
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pub(crate) fn paint_page(ui: &egui::Ui, painter: &egui::Painter, xf: &PageXform, page: usize, info: &DocInfo, form: &[FormField], view: &DocView) {
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let pointer = ui.input(|i| i.pointer.hover_pos());
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for f in form {
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for (wi, w) in f.widgets.iter().enumerate().filter(|(_, w)| w.page == Some(page) && !w.hidden) {
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let r = widget_rect(xf, info, page, w.rect);
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let focused = view.forms.focus.as_ref().is_some_and(|x| x.name == f.name && x.widget == wi);
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if focused {
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painter.rect_stroke(r.expand(1.0), CornerRadius::same(2), Stroke::new(2.0, FOCUS_BLUE), egui::StrokeKind::Outside);
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}
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if view.forms.unbaked.contains(&(f.name.clone(), page)) {
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paint_unbaked_widget(painter, xf, f, w, r);
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} else if fillable(f) && pointer.is_some_and(|p| r.contains(p)) {
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painter.rect_stroke(r, CornerRadius::same(1), Stroke::new(1.0, FOCUS_BLUE.gamma_multiply(0.8)), egui::StrokeKind::Outside);
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}
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}
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}
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}
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/// The size, in points, a text field shows `text` at on screen: its `/DA` size, or for auto size
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/// (`0 Tf`) the page appearance's fit, measured in the font the screen draws with so the text
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/// stays inside the box (the interface font runs wider than the page's Helvetica).
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pub fn field_text_size(painter: &egui::Painter, f: &FormField, w: &FormWidget, text: &str) -> f32 {
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let da = f.da.split_whitespace().collect::<Vec<_>>();
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let fixed = da
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.iter()
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.position(|x| *x == "Tf")
|
||
.and_then(|i| i.checked_sub(1))
|
||
.and_then(|i| da.get(i))
|
||
.and_then(|s| s.parse::<f64>().ok())
|
||
.filter(|s| s.is_finite() && *s > 0.0);
|
||
let size = fixed.unwrap_or_else(|| {
|
||
// The appearance's padding: 2 pt inside a 1 pt border.
|
||
let pad = 3.0;
|
||
let (width, height) = ((w.rect[2] - w.rect[0]).abs() - 2.0 * pad, (w.rect[3] - w.rect[1]).abs() - 2.0 * pad);
|
||
// Comb cells hold one character each, so only the height limits them.
|
||
let comb = f.has(field_flags::COMB) && f.max_len.is_some_and(|m| m > 0);
|
||
let fit = if comb { "" } else { text };
|
||
let font = |size: f64| egui::FontId::proportional(size as f32);
|
||
let line_width = |size: f64| f64::from(painter.layout_no_wrap(fit.to_string(), font(size), Color32::BLACK).size().x);
|
||
// Wrapped as the editor and the page preview wrap it.
|
||
let wrap = width.max(1.0) as f32;
|
||
let wrapped_height = |size: f64| f64::from(painter.layout(fit.to_string(), font(size), Color32::BLACK, wrap).size().y);
|
||
pdfcraft_engine::field_auto_text_size_by(width, height, f.has(field_flags::MULTILINE), line_width, wrapped_height)
|
||
});
|
||
size.min(300.0) as f32
|
||
}
|
||
|
||
fn paint_unbaked_widget(painter: &egui::Painter, xf: &PageXform, f: &FormField, w: &FormWidget, r: Rect) {
|
||
match f.kind {
|
||
FormFieldKind::Text | FormFieldKind::Combo => {
|
||
let text = f.value.first().map(String::as_str).unwrap_or("");
|
||
painter.rect_filled(r, CornerRadius::same(1), Color32::from_rgb(0xFF, 0xFF, 0xF4));
|
||
painter.rect_stroke(r, CornerRadius::same(1), Stroke::new(1.0, Color32::from_gray(180)), egui::StrokeKind::Inside);
|
||
if !text.is_empty() {
|
||
let unrotated_w = if xf.rot % 180 == 90 { xf.ph } else { xf.pw };
|
||
let zoom = xf.rect.width() / unrotated_w.max(1.0);
|
||
let font_size = (field_text_size(painter, f, w, text) * zoom).clamp(3.0, 64.0);
|
||
let display_text = if f.has(field_flags::PASSWORD) { "•".repeat(text.chars().count()) } else { text.to_string() };
|
||
let p = painter.with_clip_rect(r);
|
||
let (align, pos) = match f.quadding {
|
||
1 => (egui::Align2::CENTER_TOP, egui::pos2(r.center().x, r.min.y + 1.0)),
|
||
2 => (egui::Align2::RIGHT_TOP, egui::pos2(r.max.x - 3.0, r.min.y + 1.0)),
|
||
_ => (egui::Align2::LEFT_TOP, egui::pos2(r.min.x + 3.0, r.min.y + 1.0)),
|
||
};
|
||
// Multiline fields wrap at the box, as their page appearance does.
|
||
// At the width the size was fitted to: the box less 3 pt each side, scaled.
|
||
let wrap = if f.has(field_flags::MULTILINE) { (r.width() - 6.0 * zoom).max(1.0) } else { f32::INFINITY };
|
||
let galley = p.layout(display_text, egui::FontId::proportional(font_size), Color32::BLACK, wrap);
|
||
p.galley(align.anchor_size(pos, galley.size()).min, galley, Color32::BLACK);
|
||
}
|
||
}
|
||
FormFieldKind::List => {
|
||
painter.rect_filled(r, CornerRadius::same(1), Color32::from_rgb(0xFF, 0xFF, 0xF4));
|
||
painter.rect_stroke(r, CornerRadius::same(1), Stroke::new(1.0, Color32::from_gray(180)), egui::StrokeKind::Inside);
|
||
let unrotated_w = if xf.rot % 180 == 90 { xf.ph } else { xf.pw };
|
||
let zoom = (xf.rect.width() / unrotated_w.max(1.0)) as f64;
|
||
let rows = w.list.unwrap_or(form_appearance::ListRows { top: 0, inset: 2.0, row: 12.0 * 1.15, size: 12.0 });
|
||
let height_pt = if matches!(w.rotation, 90 | 270) { (w.rect[2] - w.rect[0]).max(1.0) } else { (w.rect[3] - w.rect[1]).max(1.0) };
|
||
let picked_indices: Vec<usize> = f.value.iter().filter_map(|v| f.options.iter().position(|(e, _)| e == v)).collect();
|
||
let top = form_appearance::ListRows::top_showing(rows.top, &picked_indices, rows.visible(height_pt), f.options.len());
|
||
let font_size = (rows.size * zoom).clamp(6.0, 64.0) as f32;
|
||
let row_h = (rows.row * zoom) as f32;
|
||
let inset = (rows.inset * zoom) as f32;
|
||
let p = painter.with_clip_rect(r);
|
||
let mut y = r.min.y + inset;
|
||
for (export, display) in f.options.iter().skip(top) {
|
||
if y + row_h > r.max.y {
|
||
break;
|
||
}
|
||
let row_rect = Rect::from_min_size(egui::pos2(r.min.x + 1.0, y), egui::vec2(r.width() - 2.0, row_h));
|
||
if f.value.contains(export) {
|
||
p.rect_filled(row_rect, CornerRadius::ZERO, Color32::from_rgb(0x99, 0xC0, 0xDC));
|
||
}
|
||
p.text(
|
||
egui::pos2(r.min.x + 3.0, y + font_size * 0.15),
|
||
egui::Align2::LEFT_TOP,
|
||
display,
|
||
egui::FontId::proportional(font_size),
|
||
Color32::BLACK,
|
||
);
|
||
y += row_h;
|
||
}
|
||
}
|
||
FormFieldKind::CheckBox => {
|
||
painter.rect_filled(r, CornerRadius::same(1), Color32::from_rgb(0xFF, 0xFF, 0xF4));
|
||
painter.rect_stroke(r, CornerRadius::same(1), Stroke::new(1.0, Color32::from_gray(180)), egui::StrokeKind::Inside);
|
||
let checked = f.value.first().is_some_and(|v| v != "Off" && !v.is_empty());
|
||
if checked {
|
||
let sz = (r.height() * 0.75).clamp(8.0, 32.0);
|
||
painter.text(r.center(), egui::Align2::CENTER_CENTER, "✔", egui::FontId::proportional(sz), Color32::BLACK);
|
||
}
|
||
}
|
||
FormFieldKind::Radio => {
|
||
painter.rect_filled(r, CornerRadius::same(1), Color32::from_rgb(0xFF, 0xFF, 0xF4));
|
||
painter.rect_stroke(r, CornerRadius::same(1), Stroke::new(1.0, Color32::from_gray(180)), egui::StrokeKind::Inside);
|
||
let selected = f.value.first().map(String::as_str) == w.on_state.as_deref();
|
||
if selected {
|
||
let radius = (r.height().min(r.width()) * 0.25).clamp(2.0, 16.0);
|
||
painter.circle_filled(r.center(), radius, Color32::BLACK);
|
||
}
|
||
}
|
||
_ => {}
|
||
}
|
||
}
|
||
|
||
/// The in-place editor or option list for the focused field. Returns an edit to apply.
|
||
pub(crate) fn overlay(ctx: &egui::Context, view: &mut DocView, info: &DocInfo, form: &[FormField], today: (i64, u32, u32)) -> Option<Edit> {
|
||
let pressed = view.forms.pressed;
|
||
if !ctx.input(|i| i.pointer.primary_down()) {
|
||
view.forms.pressed = false;
|
||
}
|
||
let focus = view.forms.focus.clone()?;
|
||
let Some(f) = form.iter().find(|f| f.name == focus.name) else {
|
||
view.forms.focus = None;
|
||
return None;
|
||
};
|
||
let w = f.widgets.get(focus.widget)?;
|
||
let page = w.page?;
|
||
let xf = view.page_xform(page)?;
|
||
let rect = widget_rect(&xf, info, page, w.rect);
|
||
let zoom = xf.rect.width() / xf.pw.max(1.0);
|
||
let t = Tokens::get(ctx);
|
||
let mut edit = None;
|
||
let mut close = false;
|
||
let mut next: Option<bool> = None; // Tab / Shift+Tab
|
||
match f.kind {
|
||
FormFieldKind::Text => {
|
||
let multiline = f.has(field_flags::MULTILINE);
|
||
egui::Area::new(egui::Id::new(("form-editor", view.id.0))).order(egui::Order::Foreground).fixed_pos(rect.min).show(ctx, |ui| {
|
||
ui.set_min_size(rect.size());
|
||
let Some(fx) = view.forms.focus.as_mut() else { return };
|
||
// Sized from the text being typed, so an auto-sized field shrinks to keep it in view.
|
||
let font = (field_text_size(ui.painter(), f, w, &fx.text) * zoom).clamp(3.0, 64.0);
|
||
// The field is pale yellow in every theme, so the caret must not follow the theme (pale in dark mode) (#655).
|
||
ui.visuals_mut().text_cursor.stroke.color = crate::edit_text_ui::caret_color_on(FIELD_FILL);
|
||
let mut te = if multiline { egui::TextEdit::multiline(&mut fx.text) } else { egui::TextEdit::singleline(&mut fx.text) };
|
||
te = te
|
||
// Wraps (inside the 3 px side margins) at the width the size was fitted to:
|
||
// the box less 3 pt each side, scaled.
|
||
.desired_width((rect.width() - 6.0 * zoom + 6.0).max(1.0))
|
||
.font(egui::FontId::proportional(font))
|
||
.background_color(FIELD_FILL)
|
||
.text_color(Color32::BLACK)
|
||
.margin(egui::Margin::symmetric(3, 1))
|
||
.password(f.has(field_flags::PASSWORD))
|
||
.id(egui::Id::new(("form-field", view.id.0, &f.name, focus.widget)));
|
||
if let Some(max) = f.max_len {
|
||
te = te.char_limit(max);
|
||
}
|
||
if multiline {
|
||
te = te.desired_rows(((rect.height() / (font * 1.3)).floor() as usize).max(1));
|
||
}
|
||
let mut laid_out = None;
|
||
let r = ui.add_sized(rect.size(), |ui: &mut egui::Ui| {
|
||
let out = te.show(ui);
|
||
laid_out = Some((out.galley, out.galley_pos));
|
||
out.response.response
|
||
});
|
||
if let Some(press) = fx.press.take()
|
||
&& let Some((galley, pos)) = laid_out
|
||
&& let Some(mut st) = egui::TextEdit::load_state(ui.ctx(), r.id)
|
||
{
|
||
// The press went to the page, not to this editor, which did not exist yet.
|
||
let at = galley.cursor_from_pos(press - pos + vec2(galley.rect.left(), 0.0));
|
||
st.cursor.set_char_range(Some(egui::text::CCursorRange::one(at)));
|
||
st.store(ui.ctx(), r.id);
|
||
if ui.input(|i| i.pointer.primary_down()) {
|
||
ui.ctx().set_dragged_id(r.id);
|
||
}
|
||
}
|
||
if fx.request_focus {
|
||
r.request_focus();
|
||
fx.request_focus = false;
|
||
if std::mem::take(&mut fx.select_all)
|
||
&& let Some(mut st) = egui::TextEdit::load_state(ui.ctx(), r.id)
|
||
{
|
||
let n = fx.text.chars().count();
|
||
st.cursor.set_char_range(Some(egui::text::CCursorRange::two(egui::text::CCursor::new(0), egui::text::CCursor::new(n))));
|
||
st.store(ui.ctx(), r.id);
|
||
}
|
||
}
|
||
let (enter, esc, tab, shift) = ui
|
||
.input(|i| (i.key_pressed(egui::Key::Enter), i.key_pressed(egui::Key::Escape), i.key_pressed(egui::Key::Tab), i.modifiers.shift));
|
||
if esc {
|
||
close = true;
|
||
} else if tab {
|
||
next = Some(!shift);
|
||
} else if r.lost_focus()
|
||
&& (!multiline || !enter)
|
||
&& !fx.calendar_rect.is_some_and(|c| ui.input(|i| i.pointer.interact_pos().is_some_and(|p| c.contains(p))))
|
||
{
|
||
if pressed {
|
||
// The field reopened with a refused value; keep it open and focused.
|
||
fx.request_focus = true;
|
||
} else {
|
||
// Enter in a single-line field, or clicking elsewhere, commits.
|
||
commit(view, form);
|
||
}
|
||
}
|
||
});
|
||
// Date fields: a calendar under the field (Acrobat's date picker).
|
||
if let pdfcraft_engine::form_scripts::Format::Date(fmt) = &f.actions.format
|
||
&& let Some(picked) = calendar(ctx, view, rect, fmt, today)
|
||
{
|
||
if let Some(fx) = view.forms.focus.as_mut() {
|
||
fx.text = picked;
|
||
}
|
||
commit(view, form);
|
||
return view.pending_edit.take();
|
||
}
|
||
}
|
||
FormFieldKind::Combo => {
|
||
let resp = egui::Area::new(egui::Id::new(("form-choices", view.id.0)))
|
||
.order(egui::Order::Foreground)
|
||
.fixed_pos(rect.left_bottom() + vec2(0.0, 2.0))
|
||
.show(ctx, |ui| {
|
||
egui::Frame::popup(ui.style()).show(ui, |ui| {
|
||
ui.set_min_width(rect.width().max(160.0));
|
||
ui.label(egui::RichText::new(&f.name).small().color(t.text_faint));
|
||
egui::ScrollArea::vertical().max_height(260.0).show(ui, |ui| {
|
||
for (export, display) in &f.options {
|
||
let on = f.value.first() == Some(export);
|
||
if ui.selectable_label(on, display).clicked() {
|
||
edit = Some(Edit::SetFieldValue { name: f.name.clone(), value: FieldValue::Choice(vec![export.clone()]) });
|
||
close = true;
|
||
}
|
||
}
|
||
});
|
||
});
|
||
});
|
||
let clicked_away = ctx.input(|i| i.pointer.any_click())
|
||
&& !resp.response.contains_pointer()
|
||
&& !ctx.input(|i| i.pointer.hover_pos()).is_some_and(|p| rect.contains(p));
|
||
let (tab, shift) = ctx.input(|i| (i.key_pressed(egui::Key::Tab), i.modifiers.shift));
|
||
if ctx.input(|i| i.key_pressed(egui::Key::Escape)) {
|
||
close = true;
|
||
} else if tab {
|
||
next = Some(!shift);
|
||
} else if clicked_away {
|
||
commit(view, form);
|
||
close = true;
|
||
}
|
||
}
|
||
FormFieldKind::List => {
|
||
let (up, down, esc, tab, shift) = ctx.input_mut(|i| {
|
||
(
|
||
// Consumed, so the arrows move the selection without also scrolling the page.
|
||
i.consume_key(egui::Modifiers::NONE, egui::Key::ArrowUp),
|
||
i.consume_key(egui::Modifiers::NONE, egui::Key::ArrowDown),
|
||
i.key_pressed(egui::Key::Escape),
|
||
i.key_pressed(egui::Key::Tab),
|
||
i.modifiers.shift,
|
||
)
|
||
});
|
||
if esc {
|
||
close = true;
|
||
} else if tab {
|
||
next = Some(!shift);
|
||
} else if (up || down) && !f.options.is_empty() {
|
||
let current_idx = f.value.last().and_then(|v| f.options.iter().position(|(e, _)| e == v)).unwrap_or(0);
|
||
let next_idx = if up { current_idx.saturating_sub(1) } else { (current_idx + 1).min(f.options.len().saturating_sub(1)) };
|
||
if next_idx != current_idx && next_idx < f.options.len() {
|
||
let export = f.options[next_idx].0.clone();
|
||
edit = Some(Edit::SetFieldValue { name: f.name.clone(), value: FieldValue::Choice(vec![export]) });
|
||
}
|
||
}
|
||
let clicked_away = ctx.input(|i| i.pointer.any_click()) && !ctx.input(|i| i.pointer.hover_pos()).is_some_and(|p| rect.contains(p));
|
||
if clicked_away {
|
||
close = true;
|
||
}
|
||
}
|
||
_ => close = true,
|
||
}
|
||
if close {
|
||
view.forms.focus = None;
|
||
}
|
||
if let Some(forward) = next {
|
||
commit(view, form);
|
||
let pending = view.pending_edit.take();
|
||
// The next widget that takes typing or a choice, in the document's tab order (each
|
||
// page's /Tabs: rows, columns or structure), wrapping.
|
||
let mut order: Vec<(usize, &FormField, usize)> = form
|
||
.iter()
|
||
.filter(|x| fillable(x) && matches!(x.kind, FormFieldKind::Text | FormFieldKind::Combo | FormFieldKind::List))
|
||
.flat_map(|x| x.widgets.iter().enumerate().filter(|(_, w)| w.page.is_some() && !w.hidden).map(move |(wi, w)| (w.tab, x, wi)))
|
||
.collect();
|
||
order.sort_by_key(|o| o.0);
|
||
if let Some(pos) = order
|
||
.iter()
|
||
.position(|(_, x, wi)| x.name == f.name && *wi == focus.widget)
|
||
.or_else(|| order.iter().position(|(_, x, _)| x.name == f.name))
|
||
{
|
||
let k = if forward { (pos + 1) % order.len() } else { (pos + order.len() - 1) % order.len() };
|
||
let (_, target, wi) = order[k];
|
||
view.forms.focus = Some(Focus { select_all: true, ..open_focus(target, wi) });
|
||
if let Some(p) = target.widgets[wi].page
|
||
&& view.page_screen_rect(p).is_none()
|
||
{
|
||
view.go_to_page(p);
|
||
}
|
||
}
|
||
edit = edit.or(pending);
|
||
}
|
||
edit.or_else(|| view.pending_edit.take())
|
||
}
|
||
|
||
/// Where a field's widget is on screen (tests and automation).
|
||
pub fn field_screen_rect(view: &DocView, info: &DocInfo, f: &FormField, widget: usize) -> Option<Rect> {
|
||
let w = f.widgets.get(widget)?;
|
||
let page = w.page?;
|
||
let xf = view.page_xform(page)?;
|
||
Some(widget_rect(&xf, info, page, w.rect))
|
||
}
|