2003 lines
72 KiB
Rust
2003 lines
72 KiB
Rust
use super::{
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display_map::{BlockContext, ToDisplayPoint},
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Anchor, DisplayPoint, Editor, EditorMode, EditorSnapshot, Input, Scroll, Select, SelectPhase,
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SoftWrap, ToPoint, MAX_LINE_LEN,
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};
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use crate::{
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display_map::{BlockStyle, DisplaySnapshot, TransformBlock},
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hover_popover::HoverAt,
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link_go_to_definition::{CmdChanged, GoToFetchedDefinition, UpdateGoToDefinitionLink},
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mouse_context_menu::DeployMouseContextMenu,
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EditorStyle,
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};
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use clock::ReplicaId;
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use collections::{BTreeMap, HashMap};
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use gpui::{
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color::Color,
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elements::*,
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fonts::{HighlightStyle, Underline},
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geometry::{
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rect::RectF,
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vector::{vec2f, Vector2F},
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PathBuilder,
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},
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json::{self, ToJson},
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platform::CursorStyle,
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text_layout::{self, Line, RunStyle, TextLayoutCache},
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AppContext, Axis, Border, CursorRegion, Element, ElementBox, Event, EventContext, KeyDownEvent,
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LayoutContext, ModifiersChangedEvent, MouseButton, MouseButtonEvent, MouseMovedEvent,
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MutableAppContext, PaintContext, Quad, Scene, ScrollWheelEvent, SizeConstraint, ViewContext,
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WeakViewHandle,
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};
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use json::json;
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use language::{Bias, DiagnosticSeverity, Selection};
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use project::ProjectPath;
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use settings::Settings;
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use smallvec::SmallVec;
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use std::{
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cmp::{self, Ordering},
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fmt::Write,
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iter,
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ops::Range,
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};
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const MIN_POPOVER_CHARACTER_WIDTH: f32 = 20.;
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const MIN_POPOVER_LINE_HEIGHT: f32 = 4.;
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const HOVER_POPOVER_GAP: f32 = 10.;
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struct SelectionLayout {
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head: DisplayPoint,
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range: Range<DisplayPoint>,
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}
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impl SelectionLayout {
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fn new<T: ToPoint + ToDisplayPoint + Clone>(
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selection: Selection<T>,
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line_mode: bool,
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map: &DisplaySnapshot,
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) -> Self {
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if line_mode {
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let selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
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let point_range = map.expand_to_line(selection.range());
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Self {
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head: selection.head().to_display_point(map),
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range: point_range.start.to_display_point(map)
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..point_range.end.to_display_point(map),
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}
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} else {
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let selection = selection.map(|p| p.to_display_point(map));
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Self {
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head: selection.head(),
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range: selection.range(),
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}
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}
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}
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}
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pub struct EditorElement {
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view: WeakViewHandle<Editor>,
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style: EditorStyle,
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cursor_shape: CursorShape,
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}
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impl EditorElement {
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pub fn new(
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view: WeakViewHandle<Editor>,
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style: EditorStyle,
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cursor_shape: CursorShape,
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) -> Self {
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Self {
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view,
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style,
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cursor_shape,
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}
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}
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fn view<'a>(&self, cx: &'a AppContext) -> &'a Editor {
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self.view.upgrade(cx).unwrap().read(cx)
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}
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fn update_view<F, T>(&self, cx: &mut MutableAppContext, f: F) -> T
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where
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F: FnOnce(&mut Editor, &mut ViewContext<Editor>) -> T,
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{
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self.view.upgrade(cx).unwrap().update(cx, f)
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}
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fn snapshot(&self, cx: &mut MutableAppContext) -> EditorSnapshot {
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self.update_view(cx, |view, cx| view.snapshot(cx))
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}
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fn mouse_down(
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&self,
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position: Vector2F,
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cmd: bool,
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alt: bool,
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shift: bool,
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mut click_count: usize,
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layout: &mut LayoutState,
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paint: &mut PaintState,
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cx: &mut EventContext,
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) -> bool {
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if cmd && paint.text_bounds.contains_point(position) {
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let (point, overshoot) = paint.point_for_position(&self.snapshot(cx), layout, position);
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if overshoot.is_zero() {
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cx.dispatch_action(GoToFetchedDefinition { point });
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return true;
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}
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}
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if paint.gutter_bounds.contains_point(position) {
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click_count = 3; // Simulate triple-click when clicking the gutter to select lines
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} else if !paint.text_bounds.contains_point(position) {
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return false;
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}
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let snapshot = self.snapshot(cx.app);
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let (position, overshoot) = paint.point_for_position(&snapshot, layout, position);
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if shift && alt {
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cx.dispatch_action(Select(SelectPhase::BeginColumnar {
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position,
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overshoot: overshoot.column(),
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}));
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} else if shift {
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cx.dispatch_action(Select(SelectPhase::Extend {
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position,
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click_count,
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}));
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} else {
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cx.dispatch_action(Select(SelectPhase::Begin {
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position,
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add: alt,
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click_count,
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}));
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}
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true
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}
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fn mouse_right_down(
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&self,
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position: Vector2F,
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layout: &mut LayoutState,
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paint: &mut PaintState,
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cx: &mut EventContext,
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) -> bool {
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if !paint.text_bounds.contains_point(position) {
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return false;
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}
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let snapshot = self.snapshot(cx.app);
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let (point, _) = paint.point_for_position(&snapshot, layout, position);
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cx.dispatch_action(DeployMouseContextMenu { position, point });
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true
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}
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fn mouse_up(&self, _position: Vector2F, cx: &mut EventContext) -> bool {
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if self.view(cx.app.as_ref()).is_selecting() {
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cx.dispatch_action(Select(SelectPhase::End));
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true
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} else {
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false
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}
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}
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fn mouse_dragged(
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&self,
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position: Vector2F,
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layout: &mut LayoutState,
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paint: &mut PaintState,
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cx: &mut EventContext,
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) -> bool {
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let view = self.view(cx.app.as_ref());
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if view.is_selecting() {
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let rect = paint.text_bounds;
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let mut scroll_delta = Vector2F::zero();
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let vertical_margin = layout.line_height.min(rect.height() / 3.0);
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let top = rect.origin_y() + vertical_margin;
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let bottom = rect.lower_left().y() - vertical_margin;
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if position.y() < top {
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scroll_delta.set_y(-scale_vertical_mouse_autoscroll_delta(top - position.y()))
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}
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if position.y() > bottom {
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scroll_delta.set_y(scale_vertical_mouse_autoscroll_delta(position.y() - bottom))
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}
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let horizontal_margin = layout.line_height.min(rect.width() / 3.0);
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let left = rect.origin_x() + horizontal_margin;
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let right = rect.upper_right().x() - horizontal_margin;
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if position.x() < left {
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scroll_delta.set_x(-scale_horizontal_mouse_autoscroll_delta(
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left - position.x(),
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))
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}
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if position.x() > right {
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scroll_delta.set_x(scale_horizontal_mouse_autoscroll_delta(
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position.x() - right,
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))
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}
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let snapshot = self.snapshot(cx.app);
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let (position, overshoot) = paint.point_for_position(&snapshot, layout, position);
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cx.dispatch_action(Select(SelectPhase::Update {
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position,
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overshoot: overshoot.column(),
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scroll_position: (snapshot.scroll_position() + scroll_delta)
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.clamp(Vector2F::zero(), layout.scroll_max),
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}));
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true
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} else {
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false
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}
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}
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fn mouse_moved(
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&self,
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position: Vector2F,
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cmd: bool,
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layout: &LayoutState,
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paint: &PaintState,
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cx: &mut EventContext,
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) -> bool {
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// This will be handled more correctly once https://github.com/zed-industries/zed/issues/1218 is completed
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// Don't trigger hover popover if mouse is hovering over context menu
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let point = if paint.text_bounds.contains_point(position) {
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let (point, overshoot) = paint.point_for_position(&self.snapshot(cx), layout, position);
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if overshoot.is_zero() {
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Some(point)
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} else {
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None
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}
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} else {
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None
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};
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cx.dispatch_action(UpdateGoToDefinitionLink {
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point,
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cmd_held: cmd,
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});
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if paint
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.context_menu_bounds
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.map_or(false, |context_menu_bounds| {
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context_menu_bounds.contains_point(position)
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})
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{
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return false;
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}
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if paint
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.hover_popover_bounds
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.iter()
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.any(|hover_bounds| hover_bounds.contains_point(position))
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{
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return false;
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}
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cx.dispatch_action(HoverAt { point });
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true
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}
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fn key_down(&self, input: Option<&str>, cx: &mut EventContext) -> bool {
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let view = self.view.upgrade(cx.app).unwrap();
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if view.is_focused(cx.app) {
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if let Some(input) = input {
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cx.dispatch_action(Input(input.to_string()));
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true
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} else {
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false
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}
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} else {
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false
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}
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}
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fn modifiers_changed(&self, cmd: bool, cx: &mut EventContext) -> bool {
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cx.dispatch_action(CmdChanged { cmd_down: cmd });
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false
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}
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fn scroll(
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&self,
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position: Vector2F,
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mut delta: Vector2F,
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precise: bool,
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layout: &mut LayoutState,
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paint: &mut PaintState,
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cx: &mut EventContext,
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) -> bool {
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if !paint.bounds.contains_point(position) {
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return false;
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}
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let snapshot = self.snapshot(cx.app);
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let max_glyph_width = layout.em_width;
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if !precise {
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delta *= vec2f(max_glyph_width, layout.line_height);
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}
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let scroll_position = snapshot.scroll_position();
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let x = (scroll_position.x() * max_glyph_width - delta.x()) / max_glyph_width;
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let y = (scroll_position.y() * layout.line_height - delta.y()) / layout.line_height;
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let scroll_position = vec2f(x, y).clamp(Vector2F::zero(), layout.scroll_max);
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cx.dispatch_action(Scroll(scroll_position));
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true
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}
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fn paint_background(
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&self,
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gutter_bounds: RectF,
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text_bounds: RectF,
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layout: &LayoutState,
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cx: &mut PaintContext,
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) {
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let bounds = gutter_bounds.union_rect(text_bounds);
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let scroll_top = layout.snapshot.scroll_position().y() * layout.line_height;
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let editor = self.view(cx.app);
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cx.scene.push_quad(Quad {
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bounds: gutter_bounds,
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background: Some(self.style.gutter_background),
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border: Border::new(0., Color::transparent_black()),
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corner_radius: 0.,
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});
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cx.scene.push_quad(Quad {
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bounds: text_bounds,
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background: Some(self.style.background),
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border: Border::new(0., Color::transparent_black()),
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corner_radius: 0.,
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});
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if let EditorMode::Full = editor.mode {
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let mut active_rows = layout.active_rows.iter().peekable();
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while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
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let mut end_row = *start_row;
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while active_rows.peek().map_or(false, |r| {
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*r.0 == end_row + 1 && r.1 == contains_non_empty_selection
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}) {
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active_rows.next().unwrap();
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end_row += 1;
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}
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if !contains_non_empty_selection {
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let origin = vec2f(
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bounds.origin_x(),
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bounds.origin_y() + (layout.line_height * *start_row as f32) - scroll_top,
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);
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let size = vec2f(
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bounds.width(),
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layout.line_height * (end_row - start_row + 1) as f32,
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);
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cx.scene.push_quad(Quad {
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bounds: RectF::new(origin, size),
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background: Some(self.style.active_line_background),
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border: Border::default(),
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corner_radius: 0.,
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});
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}
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}
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if let Some(highlighted_rows) = &layout.highlighted_rows {
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let origin = vec2f(
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bounds.origin_x(),
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bounds.origin_y() + (layout.line_height * highlighted_rows.start as f32)
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- scroll_top,
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);
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let size = vec2f(
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bounds.width(),
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layout.line_height * highlighted_rows.len() as f32,
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);
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cx.scene.push_quad(Quad {
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bounds: RectF::new(origin, size),
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background: Some(self.style.highlighted_line_background),
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border: Border::default(),
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corner_radius: 0.,
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});
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}
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}
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}
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fn paint_gutter(
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&mut self,
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bounds: RectF,
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visible_bounds: RectF,
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layout: &mut LayoutState,
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cx: &mut PaintContext,
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) {
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let scroll_top = layout.snapshot.scroll_position().y() * layout.line_height;
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for (ix, line) in layout.line_number_layouts.iter().enumerate() {
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if let Some(line) = line {
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let line_origin = bounds.origin()
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+ vec2f(
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bounds.width() - line.width() - layout.gutter_padding,
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ix as f32 * layout.line_height - (scroll_top % layout.line_height),
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);
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line.paint(line_origin, visible_bounds, layout.line_height, cx);
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}
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}
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if let Some((row, indicator)) = layout.code_actions_indicator.as_mut() {
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let mut x = bounds.width() - layout.gutter_padding;
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let mut y = *row as f32 * layout.line_height - scroll_top;
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x += ((layout.gutter_padding + layout.gutter_margin) - indicator.size().x()) / 2.;
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y += (layout.line_height - indicator.size().y()) / 2.;
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indicator.paint(bounds.origin() + vec2f(x, y), visible_bounds, cx);
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}
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}
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fn paint_text(
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&mut self,
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bounds: RectF,
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visible_bounds: RectF,
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layout: &mut LayoutState,
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paint: &mut PaintState,
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cx: &mut PaintContext,
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) {
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let view = self.view(cx.app);
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let style = &self.style;
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let local_replica_id = view.replica_id(cx);
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let scroll_position = layout.snapshot.scroll_position();
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let start_row = scroll_position.y() as u32;
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let scroll_top = scroll_position.y() * layout.line_height;
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let end_row = ((scroll_top + bounds.height()) / layout.line_height).ceil() as u32 + 1; // Add 1 to ensure selections bleed off screen
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let max_glyph_width = layout.em_width;
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let scroll_left = scroll_position.x() * max_glyph_width;
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let content_origin = bounds.origin() + vec2f(layout.gutter_margin, 0.);
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cx.scene.push_layer(Some(bounds));
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cx.scene.push_cursor_region(CursorRegion {
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bounds,
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style: if !view.link_go_to_definition_state.definitions.is_empty() {
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CursorStyle::PointingHand
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} else {
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CursorStyle::IBeam
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},
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});
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for (range, color) in &layout.highlighted_ranges {
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self.paint_highlighted_range(
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range.clone(),
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start_row,
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end_row,
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*color,
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0.,
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0.15 * layout.line_height,
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layout,
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content_origin,
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scroll_top,
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scroll_left,
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bounds,
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cx,
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);
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}
|
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let mut cursors = SmallVec::<[Cursor; 32]>::new();
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for (replica_id, selections) in &layout.selections {
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let selection_style = style.replica_selection_style(*replica_id);
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let corner_radius = 0.15 * layout.line_height;
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for selection in selections {
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self.paint_highlighted_range(
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selection.range.clone(),
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start_row,
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end_row,
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selection_style.selection,
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corner_radius,
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corner_radius * 2.,
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layout,
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content_origin,
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scroll_top,
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scroll_left,
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bounds,
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cx,
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);
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if view.show_local_cursors() || *replica_id != local_replica_id {
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let cursor_position = selection.head;
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if (start_row..end_row).contains(&cursor_position.row()) {
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let cursor_row_layout =
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&layout.line_layouts[(cursor_position.row() - start_row) as usize];
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let cursor_column = cursor_position.column() as usize;
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let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
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let mut block_width =
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cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
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if block_width == 0.0 {
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block_width = layout.em_width;
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}
|
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let block_text =
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if let CursorShape::Block = self.cursor_shape {
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layout.snapshot.chars_at(cursor_position).next().and_then(
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|character| {
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let font_id =
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cursor_row_layout.font_for_index(cursor_column)?;
|
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let text = character.to_string();
|
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Some(cx.text_layout_cache.layout_str(
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&text,
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cursor_row_layout.font_size(),
|
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&[(
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text.len(),
|
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RunStyle {
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font_id,
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|
color: style.background,
|
|
underline: Default::default(),
|
|
},
|
|
)],
|
|
))
|
|
},
|
|
)
|
|
} else {
|
|
None
|
|
};
|
|
|
|
let x = cursor_character_x - scroll_left;
|
|
let y = cursor_position.row() as f32 * layout.line_height - scroll_top;
|
|
cursors.push(Cursor {
|
|
color: selection_style.cursor,
|
|
block_width,
|
|
origin: vec2f(x, y),
|
|
line_height: layout.line_height,
|
|
shape: self.cursor_shape,
|
|
block_text,
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if let Some(visible_text_bounds) = bounds.intersection(visible_bounds) {
|
|
// Draw glyphs
|
|
for (ix, line) in layout.line_layouts.iter().enumerate() {
|
|
let row = start_row + ix as u32;
|
|
line.paint(
|
|
content_origin
|
|
+ vec2f(-scroll_left, row as f32 * layout.line_height - scroll_top),
|
|
visible_text_bounds,
|
|
layout.line_height,
|
|
cx,
|
|
);
|
|
}
|
|
}
|
|
|
|
cx.scene.push_layer(Some(bounds));
|
|
for cursor in cursors {
|
|
cursor.paint(content_origin, cx);
|
|
}
|
|
cx.scene.pop_layer();
|
|
|
|
if let Some((position, context_menu)) = layout.context_menu.as_mut() {
|
|
cx.scene.push_stacking_context(None);
|
|
let cursor_row_layout = &layout.line_layouts[(position.row() - start_row) as usize];
|
|
let x = cursor_row_layout.x_for_index(position.column() as usize) - scroll_left;
|
|
let y = (position.row() + 1) as f32 * layout.line_height - scroll_top;
|
|
let mut list_origin = content_origin + vec2f(x, y);
|
|
let list_width = context_menu.size().x();
|
|
let list_height = context_menu.size().y();
|
|
|
|
// Snap the right edge of the list to the right edge of the window if
|
|
// its horizontal bounds overflow.
|
|
if list_origin.x() + list_width > cx.window_size.x() {
|
|
list_origin.set_x((cx.window_size.x() - list_width).max(0.));
|
|
}
|
|
|
|
if list_origin.y() + list_height > bounds.max_y() {
|
|
list_origin.set_y(list_origin.y() - layout.line_height - list_height);
|
|
}
|
|
|
|
context_menu.paint(
|
|
list_origin,
|
|
RectF::from_points(Vector2F::zero(), vec2f(f32::MAX, f32::MAX)), // Let content bleed outside of editor
|
|
cx,
|
|
);
|
|
|
|
paint.context_menu_bounds = Some(RectF::new(list_origin, context_menu.size()));
|
|
|
|
cx.scene.pop_stacking_context();
|
|
}
|
|
|
|
if let Some((position, hover_popovers)) = layout.hover_popovers.as_mut() {
|
|
cx.scene.push_stacking_context(None);
|
|
|
|
// This is safe because we check on layout whether the required row is available
|
|
let hovered_row_layout = &layout.line_layouts[(position.row() - start_row) as usize];
|
|
|
|
// Minimum required size: Take the first popover, and add 1.5 times the minimum popover
|
|
// height. This is the size we will use to decide whether to render popovers above or below
|
|
// the hovered line.
|
|
let first_size = hover_popovers[0].size();
|
|
let height_to_reserve =
|
|
first_size.y() + 1.5 * MIN_POPOVER_LINE_HEIGHT as f32 * layout.line_height;
|
|
|
|
// Compute Hovered Point
|
|
let x = hovered_row_layout.x_for_index(position.column() as usize) - scroll_left;
|
|
let y = position.row() as f32 * layout.line_height - scroll_top;
|
|
let hovered_point = content_origin + vec2f(x, y);
|
|
|
|
paint.hover_popover_bounds.clear();
|
|
|
|
if hovered_point.y() - height_to_reserve > 0.0 {
|
|
// There is enough space above. Render popovers above the hovered point
|
|
let mut current_y = hovered_point.y();
|
|
for hover_popover in hover_popovers {
|
|
let size = hover_popover.size();
|
|
let mut popover_origin = vec2f(hovered_point.x(), current_y - size.y());
|
|
|
|
let x_out_of_bounds = bounds.max_x() - (popover_origin.x() + size.x());
|
|
if x_out_of_bounds < 0.0 {
|
|
popover_origin.set_x(popover_origin.x() + x_out_of_bounds);
|
|
}
|
|
|
|
hover_popover.paint(
|
|
popover_origin,
|
|
RectF::from_points(Vector2F::zero(), vec2f(f32::MAX, f32::MAX)), // Let content bleed outside of editor
|
|
cx,
|
|
);
|
|
|
|
paint.hover_popover_bounds.push(
|
|
RectF::new(popover_origin, hover_popover.size())
|
|
.dilate(Vector2F::new(0., 5.)),
|
|
);
|
|
|
|
current_y = popover_origin.y() - HOVER_POPOVER_GAP;
|
|
}
|
|
} else {
|
|
// There is not enough space above. Render popovers below the hovered point
|
|
let mut current_y = hovered_point.y() + layout.line_height;
|
|
for hover_popover in hover_popovers {
|
|
let size = hover_popover.size();
|
|
let mut popover_origin = vec2f(hovered_point.x(), current_y);
|
|
|
|
let x_out_of_bounds = bounds.max_x() - (popover_origin.x() + size.x());
|
|
if x_out_of_bounds < 0.0 {
|
|
popover_origin.set_x(popover_origin.x() + x_out_of_bounds);
|
|
}
|
|
|
|
hover_popover.paint(
|
|
popover_origin,
|
|
RectF::from_points(Vector2F::zero(), vec2f(f32::MAX, f32::MAX)), // Let content bleed outside of editor
|
|
cx,
|
|
);
|
|
|
|
paint.hover_popover_bounds.push(
|
|
RectF::new(popover_origin, hover_popover.size())
|
|
.dilate(Vector2F::new(0., 5.)),
|
|
);
|
|
|
|
current_y = popover_origin.y() + size.y() + HOVER_POPOVER_GAP;
|
|
}
|
|
}
|
|
|
|
cx.scene.pop_stacking_context();
|
|
}
|
|
|
|
cx.scene.pop_layer();
|
|
}
|
|
|
|
fn paint_highlighted_range(
|
|
&self,
|
|
range: Range<DisplayPoint>,
|
|
start_row: u32,
|
|
end_row: u32,
|
|
color: Color,
|
|
corner_radius: f32,
|
|
line_end_overshoot: f32,
|
|
layout: &LayoutState,
|
|
content_origin: Vector2F,
|
|
scroll_top: f32,
|
|
scroll_left: f32,
|
|
bounds: RectF,
|
|
cx: &mut PaintContext,
|
|
) {
|
|
if range.start != range.end {
|
|
let row_range = if range.end.column() == 0 {
|
|
cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
|
|
} else {
|
|
cmp::max(range.start.row(), start_row)..cmp::min(range.end.row() + 1, end_row)
|
|
};
|
|
|
|
let highlighted_range = HighlightedRange {
|
|
color,
|
|
line_height: layout.line_height,
|
|
corner_radius,
|
|
start_y: content_origin.y() + row_range.start as f32 * layout.line_height
|
|
- scroll_top,
|
|
lines: row_range
|
|
.into_iter()
|
|
.map(|row| {
|
|
let line_layout = &layout.line_layouts[(row - start_row) as usize];
|
|
HighlightedRangeLine {
|
|
start_x: if row == range.start.row() {
|
|
content_origin.x()
|
|
+ line_layout.x_for_index(range.start.column() as usize)
|
|
- scroll_left
|
|
} else {
|
|
content_origin.x() - scroll_left
|
|
},
|
|
end_x: if row == range.end.row() {
|
|
content_origin.x()
|
|
+ line_layout.x_for_index(range.end.column() as usize)
|
|
- scroll_left
|
|
} else {
|
|
content_origin.x() + line_layout.width() + line_end_overshoot
|
|
- scroll_left
|
|
},
|
|
}
|
|
})
|
|
.collect(),
|
|
};
|
|
|
|
highlighted_range.paint(bounds, cx.scene);
|
|
}
|
|
}
|
|
|
|
fn paint_blocks(
|
|
&mut self,
|
|
bounds: RectF,
|
|
visible_bounds: RectF,
|
|
layout: &mut LayoutState,
|
|
cx: &mut PaintContext,
|
|
) {
|
|
let scroll_position = layout.snapshot.scroll_position();
|
|
let scroll_left = scroll_position.x() * layout.em_width;
|
|
let scroll_top = scroll_position.y() * layout.line_height;
|
|
|
|
for block in &mut layout.blocks {
|
|
let mut origin =
|
|
bounds.origin() + vec2f(0., block.row as f32 * layout.line_height - scroll_top);
|
|
if !matches!(block.style, BlockStyle::Sticky) {
|
|
origin += vec2f(-scroll_left, 0.);
|
|
}
|
|
block.element.paint(origin, visible_bounds, cx);
|
|
}
|
|
}
|
|
|
|
fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &LayoutContext) -> f32 {
|
|
let digit_count = (snapshot.max_buffer_row() as f32).log10().floor() as usize + 1;
|
|
let style = &self.style;
|
|
|
|
cx.text_layout_cache
|
|
.layout_str(
|
|
"1".repeat(digit_count).as_str(),
|
|
style.text.font_size,
|
|
&[(
|
|
digit_count,
|
|
RunStyle {
|
|
font_id: style.text.font_id,
|
|
color: Color::black(),
|
|
underline: Default::default(),
|
|
},
|
|
)],
|
|
)
|
|
.width()
|
|
}
|
|
|
|
fn layout_line_numbers(
|
|
&self,
|
|
rows: Range<u32>,
|
|
active_rows: &BTreeMap<u32, bool>,
|
|
snapshot: &EditorSnapshot,
|
|
cx: &LayoutContext,
|
|
) -> Vec<Option<text_layout::Line>> {
|
|
let style = &self.style;
|
|
let include_line_numbers = snapshot.mode == EditorMode::Full;
|
|
let mut line_number_layouts = Vec::with_capacity(rows.len());
|
|
let mut line_number = String::new();
|
|
for (ix, row) in snapshot
|
|
.buffer_rows(rows.start)
|
|
.take((rows.end - rows.start) as usize)
|
|
.enumerate()
|
|
{
|
|
let display_row = rows.start + ix as u32;
|
|
let color = if active_rows.contains_key(&display_row) {
|
|
style.line_number_active
|
|
} else {
|
|
style.line_number
|
|
};
|
|
if let Some(buffer_row) = row {
|
|
if include_line_numbers {
|
|
line_number.clear();
|
|
write!(&mut line_number, "{}", buffer_row + 1).unwrap();
|
|
line_number_layouts.push(Some(cx.text_layout_cache.layout_str(
|
|
&line_number,
|
|
style.text.font_size,
|
|
&[(
|
|
line_number.len(),
|
|
RunStyle {
|
|
font_id: style.text.font_id,
|
|
color,
|
|
underline: Default::default(),
|
|
},
|
|
)],
|
|
)));
|
|
}
|
|
} else {
|
|
line_number_layouts.push(None);
|
|
}
|
|
}
|
|
|
|
line_number_layouts
|
|
}
|
|
|
|
fn layout_lines(
|
|
&mut self,
|
|
rows: Range<u32>,
|
|
snapshot: &EditorSnapshot,
|
|
cx: &LayoutContext,
|
|
) -> Vec<text_layout::Line> {
|
|
if rows.start >= rows.end {
|
|
return Vec::new();
|
|
}
|
|
|
|
// When the editor is empty and unfocused, then show the placeholder.
|
|
if snapshot.is_empty() && !snapshot.is_focused() {
|
|
let placeholder_style = self
|
|
.style
|
|
.placeholder_text
|
|
.as_ref()
|
|
.unwrap_or_else(|| &self.style.text);
|
|
let placeholder_text = snapshot.placeholder_text();
|
|
let placeholder_lines = placeholder_text
|
|
.as_ref()
|
|
.map_or("", AsRef::as_ref)
|
|
.split('\n')
|
|
.skip(rows.start as usize)
|
|
.chain(iter::repeat(""))
|
|
.take(rows.len());
|
|
return placeholder_lines
|
|
.map(|line| {
|
|
cx.text_layout_cache.layout_str(
|
|
line,
|
|
placeholder_style.font_size,
|
|
&[(
|
|
line.len(),
|
|
RunStyle {
|
|
font_id: placeholder_style.font_id,
|
|
color: placeholder_style.color,
|
|
underline: Default::default(),
|
|
},
|
|
)],
|
|
)
|
|
})
|
|
.collect();
|
|
} else {
|
|
let style = &self.style;
|
|
let chunks = snapshot.chunks(rows.clone(), true).map(|chunk| {
|
|
let mut highlight_style = chunk
|
|
.syntax_highlight_id
|
|
.and_then(|id| id.style(&style.syntax));
|
|
|
|
if let Some(chunk_highlight) = chunk.highlight_style {
|
|
if let Some(highlight_style) = highlight_style.as_mut() {
|
|
highlight_style.highlight(chunk_highlight);
|
|
} else {
|
|
highlight_style = Some(chunk_highlight);
|
|
}
|
|
}
|
|
|
|
let mut diagnostic_highlight = HighlightStyle::default();
|
|
|
|
if chunk.is_unnecessary {
|
|
diagnostic_highlight.fade_out = Some(style.unnecessary_code_fade);
|
|
}
|
|
|
|
if let Some(severity) = chunk.diagnostic_severity {
|
|
// Omit underlines for HINT/INFO diagnostics on 'unnecessary' code.
|
|
if severity <= DiagnosticSeverity::WARNING || !chunk.is_unnecessary {
|
|
let diagnostic_style = super::diagnostic_style(severity, true, style);
|
|
diagnostic_highlight.underline = Some(Underline {
|
|
color: Some(diagnostic_style.message.text.color),
|
|
thickness: 1.0.into(),
|
|
squiggly: true,
|
|
});
|
|
}
|
|
}
|
|
|
|
if let Some(highlight_style) = highlight_style.as_mut() {
|
|
highlight_style.highlight(diagnostic_highlight);
|
|
} else {
|
|
highlight_style = Some(diagnostic_highlight);
|
|
}
|
|
|
|
(chunk.text, highlight_style)
|
|
});
|
|
layout_highlighted_chunks(
|
|
chunks,
|
|
&style.text,
|
|
&cx.text_layout_cache,
|
|
&cx.font_cache,
|
|
MAX_LINE_LEN,
|
|
rows.len() as usize,
|
|
)
|
|
}
|
|
}
|
|
|
|
fn layout_blocks(
|
|
&mut self,
|
|
rows: Range<u32>,
|
|
snapshot: &EditorSnapshot,
|
|
editor_width: f32,
|
|
scroll_width: f32,
|
|
gutter_padding: f32,
|
|
gutter_width: f32,
|
|
em_width: f32,
|
|
text_x: f32,
|
|
line_height: f32,
|
|
style: &EditorStyle,
|
|
line_layouts: &[text_layout::Line],
|
|
cx: &mut LayoutContext,
|
|
) -> (f32, Vec<BlockLayout>) {
|
|
let editor = if let Some(editor) = self.view.upgrade(cx) {
|
|
editor
|
|
} else {
|
|
return Default::default();
|
|
};
|
|
|
|
let tooltip_style = cx.global::<Settings>().theme.tooltip.clone();
|
|
let scroll_x = snapshot.scroll_position.x();
|
|
let (fixed_blocks, non_fixed_blocks) = snapshot
|
|
.blocks_in_range(rows.clone())
|
|
.partition::<Vec<_>, _>(|(_, block)| match block {
|
|
TransformBlock::ExcerptHeader { .. } => false,
|
|
TransformBlock::Custom(block) => block.style() == BlockStyle::Fixed,
|
|
});
|
|
let mut render_block = |block: &TransformBlock, width: f32| {
|
|
let mut element = match block {
|
|
TransformBlock::Custom(block) => {
|
|
let align_to = block
|
|
.position()
|
|
.to_point(&snapshot.buffer_snapshot)
|
|
.to_display_point(snapshot);
|
|
let anchor_x = text_x
|
|
+ if rows.contains(&align_to.row()) {
|
|
line_layouts[(align_to.row() - rows.start) as usize]
|
|
.x_for_index(align_to.column() as usize)
|
|
} else {
|
|
layout_line(align_to.row(), snapshot, style, cx.text_layout_cache)
|
|
.x_for_index(align_to.column() as usize)
|
|
};
|
|
|
|
cx.render(&editor, |_, cx| {
|
|
block.render(&mut BlockContext {
|
|
cx,
|
|
anchor_x,
|
|
gutter_padding,
|
|
line_height,
|
|
scroll_x,
|
|
gutter_width,
|
|
em_width,
|
|
})
|
|
})
|
|
}
|
|
TransformBlock::ExcerptHeader {
|
|
key,
|
|
buffer,
|
|
range,
|
|
starts_new_buffer,
|
|
..
|
|
} => {
|
|
let jump_icon = project::File::from_dyn(buffer.file()).map(|file| {
|
|
let jump_position = range
|
|
.primary
|
|
.as_ref()
|
|
.map_or(range.context.start, |primary| primary.start);
|
|
let jump_action = crate::Jump {
|
|
path: ProjectPath {
|
|
worktree_id: file.worktree_id(cx),
|
|
path: file.path.clone(),
|
|
},
|
|
position: language::ToPoint::to_point(&jump_position, buffer),
|
|
anchor: jump_position,
|
|
};
|
|
|
|
enum JumpIcon {}
|
|
cx.render(&editor, |_, cx| {
|
|
MouseEventHandler::new::<JumpIcon, _, _>(*key, cx, |state, _| {
|
|
let style = style.jump_icon.style_for(state, false);
|
|
Svg::new("icons/arrow_up_right_8.svg")
|
|
.with_color(style.color)
|
|
.constrained()
|
|
.with_width(style.icon_width)
|
|
.aligned()
|
|
.contained()
|
|
.with_style(style.container)
|
|
.constrained()
|
|
.with_width(style.button_width)
|
|
.with_height(style.button_width)
|
|
.boxed()
|
|
})
|
|
.with_cursor_style(CursorStyle::PointingHand)
|
|
.on_click(MouseButton::Left, move |_, cx| {
|
|
cx.dispatch_action(jump_action.clone())
|
|
})
|
|
.with_tooltip::<JumpIcon, _>(
|
|
*key,
|
|
"Jump to Buffer".to_string(),
|
|
Some(Box::new(crate::OpenExcerpts)),
|
|
tooltip_style.clone(),
|
|
cx,
|
|
)
|
|
.aligned()
|
|
.flex_float()
|
|
.boxed()
|
|
})
|
|
});
|
|
|
|
if *starts_new_buffer {
|
|
let style = &self.style.diagnostic_path_header;
|
|
let font_size =
|
|
(style.text_scale_factor * self.style.text.font_size).round();
|
|
|
|
let mut filename = None;
|
|
let mut parent_path = None;
|
|
if let Some(file) = buffer.file() {
|
|
let path = file.path();
|
|
filename = path.file_name().map(|f| f.to_string_lossy().to_string());
|
|
parent_path =
|
|
path.parent().map(|p| p.to_string_lossy().to_string() + "/");
|
|
}
|
|
|
|
Flex::row()
|
|
.with_child(
|
|
Label::new(
|
|
filename.unwrap_or_else(|| "untitled".to_string()),
|
|
style.filename.text.clone().with_font_size(font_size),
|
|
)
|
|
.contained()
|
|
.with_style(style.filename.container)
|
|
.aligned()
|
|
.boxed(),
|
|
)
|
|
.with_children(parent_path.map(|path| {
|
|
Label::new(path, style.path.text.clone().with_font_size(font_size))
|
|
.contained()
|
|
.with_style(style.path.container)
|
|
.aligned()
|
|
.boxed()
|
|
}))
|
|
.with_children(jump_icon)
|
|
.contained()
|
|
.with_style(style.container)
|
|
.with_padding_left(gutter_padding)
|
|
.with_padding_right(gutter_padding)
|
|
.expanded()
|
|
.named("path header block")
|
|
} else {
|
|
let text_style = self.style.text.clone();
|
|
Flex::row()
|
|
.with_child(Label::new("…".to_string(), text_style).boxed())
|
|
.with_children(jump_icon)
|
|
.contained()
|
|
.with_padding_left(gutter_padding)
|
|
.with_padding_right(gutter_padding)
|
|
.expanded()
|
|
.named("collapsed context")
|
|
}
|
|
}
|
|
};
|
|
|
|
element.layout(
|
|
SizeConstraint {
|
|
min: Vector2F::zero(),
|
|
max: vec2f(width, block.height() as f32 * line_height),
|
|
},
|
|
cx,
|
|
);
|
|
element
|
|
};
|
|
|
|
let mut fixed_block_max_width = 0f32;
|
|
let mut blocks = Vec::new();
|
|
for (row, block) in fixed_blocks {
|
|
let element = render_block(block, f32::INFINITY);
|
|
fixed_block_max_width = fixed_block_max_width.max(element.size().x() + em_width);
|
|
blocks.push(BlockLayout {
|
|
row,
|
|
element,
|
|
style: BlockStyle::Fixed,
|
|
});
|
|
}
|
|
for (row, block) in non_fixed_blocks {
|
|
let style = match block {
|
|
TransformBlock::Custom(block) => block.style(),
|
|
TransformBlock::ExcerptHeader { .. } => BlockStyle::Sticky,
|
|
};
|
|
let width = match style {
|
|
BlockStyle::Sticky => editor_width,
|
|
BlockStyle::Flex => editor_width
|
|
.max(fixed_block_max_width)
|
|
.max(gutter_width + scroll_width),
|
|
BlockStyle::Fixed => unreachable!(),
|
|
};
|
|
let element = render_block(block, width);
|
|
blocks.push(BlockLayout {
|
|
row,
|
|
element,
|
|
style,
|
|
});
|
|
}
|
|
(
|
|
scroll_width.max(fixed_block_max_width - gutter_width),
|
|
blocks,
|
|
)
|
|
}
|
|
}
|
|
|
|
impl Element for EditorElement {
|
|
type LayoutState = LayoutState;
|
|
type PaintState = PaintState;
|
|
|
|
fn layout(
|
|
&mut self,
|
|
constraint: SizeConstraint,
|
|
cx: &mut LayoutContext,
|
|
) -> (Vector2F, Self::LayoutState) {
|
|
let mut size = constraint.max;
|
|
if size.x().is_infinite() {
|
|
unimplemented!("we don't yet handle an infinite width constraint on buffer elements");
|
|
}
|
|
|
|
let snapshot = self.snapshot(cx.app);
|
|
let style = self.style.clone();
|
|
let line_height = style.text.line_height(cx.font_cache);
|
|
|
|
let gutter_padding;
|
|
let gutter_width;
|
|
let gutter_margin;
|
|
if snapshot.mode == EditorMode::Full {
|
|
gutter_padding = style.text.em_width(cx.font_cache) * style.gutter_padding_factor;
|
|
gutter_width = self.max_line_number_width(&snapshot, cx) + gutter_padding * 2.0;
|
|
gutter_margin = -style.text.descent(cx.font_cache);
|
|
} else {
|
|
gutter_padding = 0.0;
|
|
gutter_width = 0.0;
|
|
gutter_margin = 0.0;
|
|
};
|
|
|
|
let text_width = size.x() - gutter_width;
|
|
let em_width = style.text.em_width(cx.font_cache);
|
|
let em_advance = style.text.em_advance(cx.font_cache);
|
|
let overscroll = vec2f(em_width, 0.);
|
|
let snapshot = self.update_view(cx.app, |view, cx| {
|
|
let wrap_width = match view.soft_wrap_mode(cx) {
|
|
SoftWrap::None => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
|
|
SoftWrap::EditorWidth => {
|
|
Some(text_width - gutter_margin - overscroll.x() - em_width)
|
|
}
|
|
SoftWrap::Column(column) => Some(column as f32 * em_advance),
|
|
};
|
|
|
|
if view.set_wrap_width(wrap_width, cx) {
|
|
view.snapshot(cx)
|
|
} else {
|
|
snapshot
|
|
}
|
|
});
|
|
|
|
let scroll_height = (snapshot.max_point().row() + 1) as f32 * line_height;
|
|
if let EditorMode::AutoHeight { max_lines } = snapshot.mode {
|
|
size.set_y(
|
|
scroll_height
|
|
.min(constraint.max_along(Axis::Vertical))
|
|
.max(constraint.min_along(Axis::Vertical))
|
|
.min(line_height * max_lines as f32),
|
|
)
|
|
} else if let EditorMode::SingleLine = snapshot.mode {
|
|
size.set_y(
|
|
line_height
|
|
.min(constraint.max_along(Axis::Vertical))
|
|
.max(constraint.min_along(Axis::Vertical)),
|
|
)
|
|
} else if size.y().is_infinite() {
|
|
size.set_y(scroll_height);
|
|
}
|
|
let gutter_size = vec2f(gutter_width, size.y());
|
|
let text_size = vec2f(text_width, size.y());
|
|
|
|
let (autoscroll_horizontally, mut snapshot) = self.update_view(cx.app, |view, cx| {
|
|
let autoscroll_horizontally = view.autoscroll_vertically(size.y(), line_height, cx);
|
|
let snapshot = view.snapshot(cx);
|
|
(autoscroll_horizontally, snapshot)
|
|
});
|
|
|
|
let scroll_position = snapshot.scroll_position();
|
|
// The scroll position is a fractional point, the whole number of which represents
|
|
// the top of the window in terms of display rows.
|
|
let start_row = scroll_position.y() as u32;
|
|
let scroll_top = scroll_position.y() * line_height;
|
|
|
|
// Add 1 to ensure selections bleed off screen
|
|
let end_row = 1 + cmp::min(
|
|
((scroll_top + size.y()) / line_height).ceil() as u32,
|
|
snapshot.max_point().row(),
|
|
);
|
|
|
|
let start_anchor = if start_row == 0 {
|
|
Anchor::min()
|
|
} else {
|
|
snapshot
|
|
.buffer_snapshot
|
|
.anchor_before(DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left))
|
|
};
|
|
let end_anchor = if end_row > snapshot.max_point().row() {
|
|
Anchor::max()
|
|
} else {
|
|
snapshot
|
|
.buffer_snapshot
|
|
.anchor_before(DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right))
|
|
};
|
|
|
|
let mut selections: Vec<(ReplicaId, Vec<SelectionLayout>)> = Vec::new();
|
|
let mut active_rows = BTreeMap::new();
|
|
let mut highlighted_rows = None;
|
|
let mut highlighted_ranges = Vec::new();
|
|
self.update_view(cx.app, |view, cx| {
|
|
let display_map = view.display_map.update(cx, |map, cx| map.snapshot(cx));
|
|
|
|
highlighted_rows = view.highlighted_rows();
|
|
let theme = cx.global::<Settings>().theme.as_ref();
|
|
highlighted_ranges = view.background_highlights_in_range(
|
|
start_anchor.clone()..end_anchor.clone(),
|
|
&display_map,
|
|
theme,
|
|
);
|
|
|
|
let mut remote_selections = HashMap::default();
|
|
for (replica_id, line_mode, selection) in display_map
|
|
.buffer_snapshot
|
|
.remote_selections_in_range(&(start_anchor.clone()..end_anchor.clone()))
|
|
{
|
|
// The local selections match the leader's selections.
|
|
if Some(replica_id) == view.leader_replica_id {
|
|
continue;
|
|
}
|
|
remote_selections
|
|
.entry(replica_id)
|
|
.or_insert(Vec::new())
|
|
.push(SelectionLayout::new(selection, line_mode, &display_map));
|
|
}
|
|
selections.extend(remote_selections);
|
|
|
|
if view.show_local_selections {
|
|
let mut local_selections = view
|
|
.selections
|
|
.disjoint_in_range(start_anchor..end_anchor, cx);
|
|
local_selections.extend(view.selections.pending(cx));
|
|
for selection in &local_selections {
|
|
let is_empty = selection.start == selection.end;
|
|
let selection_start = snapshot.prev_line_boundary(selection.start).1;
|
|
let selection_end = snapshot.next_line_boundary(selection.end).1;
|
|
for row in cmp::max(selection_start.row(), start_row)
|
|
..=cmp::min(selection_end.row(), end_row)
|
|
{
|
|
let contains_non_empty_selection =
|
|
active_rows.entry(row).or_insert(!is_empty);
|
|
*contains_non_empty_selection |= !is_empty;
|
|
}
|
|
}
|
|
|
|
// Render the local selections in the leader's color when following.
|
|
let local_replica_id = view.leader_replica_id.unwrap_or(view.replica_id(cx));
|
|
|
|
selections.push((
|
|
local_replica_id,
|
|
local_selections
|
|
.into_iter()
|
|
.map(|selection| {
|
|
SelectionLayout::new(selection, view.selections.line_mode, &display_map)
|
|
})
|
|
.collect(),
|
|
));
|
|
}
|
|
});
|
|
|
|
let line_number_layouts =
|
|
self.layout_line_numbers(start_row..end_row, &active_rows, &snapshot, cx);
|
|
|
|
let mut max_visible_line_width = 0.0;
|
|
let line_layouts = self.layout_lines(start_row..end_row, &snapshot, cx);
|
|
for line in &line_layouts {
|
|
if line.width() > max_visible_line_width {
|
|
max_visible_line_width = line.width();
|
|
}
|
|
}
|
|
|
|
let style = self.style.clone();
|
|
let longest_line_width = layout_line(
|
|
snapshot.longest_row(),
|
|
&snapshot,
|
|
&style,
|
|
cx.text_layout_cache,
|
|
)
|
|
.width();
|
|
let scroll_width = longest_line_width.max(max_visible_line_width) + overscroll.x();
|
|
let em_width = style.text.em_width(cx.font_cache);
|
|
let (scroll_width, blocks) = self.layout_blocks(
|
|
start_row..end_row,
|
|
&snapshot,
|
|
size.x(),
|
|
scroll_width,
|
|
gutter_padding,
|
|
gutter_width,
|
|
em_width,
|
|
gutter_width + gutter_margin,
|
|
line_height,
|
|
&style,
|
|
&line_layouts,
|
|
cx,
|
|
);
|
|
|
|
let max_row = snapshot.max_point().row();
|
|
let scroll_max = vec2f(
|
|
((scroll_width - text_size.x()) / em_width).max(0.0),
|
|
max_row.saturating_sub(1) as f32,
|
|
);
|
|
|
|
self.update_view(cx.app, |view, cx| {
|
|
let clamped = view.clamp_scroll_left(scroll_max.x());
|
|
let autoscrolled;
|
|
if autoscroll_horizontally {
|
|
autoscrolled = view.autoscroll_horizontally(
|
|
start_row,
|
|
text_size.x(),
|
|
scroll_width,
|
|
em_width,
|
|
&line_layouts,
|
|
cx,
|
|
);
|
|
} else {
|
|
autoscrolled = false;
|
|
}
|
|
|
|
if clamped || autoscrolled {
|
|
snapshot = view.snapshot(cx);
|
|
}
|
|
});
|
|
|
|
let mut context_menu = None;
|
|
let mut code_actions_indicator = None;
|
|
let mut hover = None;
|
|
cx.render(&self.view.upgrade(cx).unwrap(), |view, cx| {
|
|
let newest_selection_head = view
|
|
.selections
|
|
.newest::<usize>(cx)
|
|
.head()
|
|
.to_display_point(&snapshot);
|
|
|
|
let style = view.style(cx);
|
|
if (start_row..end_row).contains(&newest_selection_head.row()) {
|
|
if view.context_menu_visible() {
|
|
context_menu =
|
|
view.render_context_menu(newest_selection_head, style.clone(), cx);
|
|
}
|
|
|
|
code_actions_indicator = view
|
|
.render_code_actions_indicator(&style, cx)
|
|
.map(|indicator| (newest_selection_head.row(), indicator));
|
|
}
|
|
|
|
let visible_rows = start_row..start_row + line_layouts.len() as u32;
|
|
hover = view.hover_state.render(&snapshot, &style, visible_rows, cx);
|
|
});
|
|
|
|
if let Some((_, context_menu)) = context_menu.as_mut() {
|
|
context_menu.layout(
|
|
SizeConstraint {
|
|
min: Vector2F::zero(),
|
|
max: vec2f(
|
|
cx.window_size.x() * 0.7,
|
|
(12. * line_height).min((size.y() - line_height) / 2.),
|
|
),
|
|
},
|
|
cx,
|
|
);
|
|
}
|
|
|
|
if let Some((_, indicator)) = code_actions_indicator.as_mut() {
|
|
indicator.layout(
|
|
SizeConstraint::strict_along(Axis::Vertical, line_height * 0.618),
|
|
cx,
|
|
);
|
|
}
|
|
|
|
if let Some((_, hover_popovers)) = hover.as_mut() {
|
|
for hover_popover in hover_popovers.iter_mut() {
|
|
hover_popover.layout(
|
|
SizeConstraint {
|
|
min: Vector2F::zero(),
|
|
max: vec2f(
|
|
(120. * em_width) // Default size
|
|
.min(size.x() / 2.) // Shrink to half of the editor width
|
|
.max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
|
|
(16. * line_height) // Default size
|
|
.min(size.y() / 2.) // Shrink to half of the editor height
|
|
.max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
|
|
),
|
|
},
|
|
cx,
|
|
);
|
|
}
|
|
}
|
|
|
|
(
|
|
size,
|
|
LayoutState {
|
|
size,
|
|
scroll_max,
|
|
gutter_size,
|
|
gutter_padding,
|
|
text_size,
|
|
gutter_margin,
|
|
snapshot,
|
|
active_rows,
|
|
highlighted_rows,
|
|
highlighted_ranges,
|
|
line_layouts,
|
|
line_number_layouts,
|
|
blocks,
|
|
line_height,
|
|
em_width,
|
|
em_advance,
|
|
selections,
|
|
context_menu,
|
|
code_actions_indicator,
|
|
hover_popovers: hover,
|
|
},
|
|
)
|
|
}
|
|
|
|
fn paint(
|
|
&mut self,
|
|
bounds: RectF,
|
|
visible_bounds: RectF,
|
|
layout: &mut Self::LayoutState,
|
|
cx: &mut PaintContext,
|
|
) -> Self::PaintState {
|
|
cx.scene.push_layer(Some(bounds));
|
|
|
|
let gutter_bounds = RectF::new(bounds.origin(), layout.gutter_size);
|
|
let text_bounds = RectF::new(
|
|
bounds.origin() + vec2f(layout.gutter_size.x(), 0.0),
|
|
layout.text_size,
|
|
);
|
|
|
|
let mut paint_state = PaintState {
|
|
bounds,
|
|
gutter_bounds,
|
|
text_bounds,
|
|
context_menu_bounds: None,
|
|
hover_popover_bounds: Default::default(),
|
|
};
|
|
|
|
self.paint_background(gutter_bounds, text_bounds, layout, cx);
|
|
if layout.gutter_size.x() > 0. {
|
|
self.paint_gutter(gutter_bounds, visible_bounds, layout, cx);
|
|
}
|
|
self.paint_text(text_bounds, visible_bounds, layout, &mut paint_state, cx);
|
|
|
|
if !layout.blocks.is_empty() {
|
|
cx.scene.push_layer(Some(bounds));
|
|
self.paint_blocks(bounds, visible_bounds, layout, cx);
|
|
cx.scene.pop_layer();
|
|
}
|
|
|
|
cx.scene.pop_layer();
|
|
|
|
paint_state
|
|
}
|
|
|
|
fn dispatch_event(
|
|
&mut self,
|
|
event: &Event,
|
|
_: RectF,
|
|
_: RectF,
|
|
layout: &mut LayoutState,
|
|
paint: &mut PaintState,
|
|
cx: &mut EventContext,
|
|
) -> bool {
|
|
if let Some((_, context_menu)) = &mut layout.context_menu {
|
|
if context_menu.dispatch_event(event, cx) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if let Some((_, indicator)) = &mut layout.code_actions_indicator {
|
|
if indicator.dispatch_event(event, cx) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if let Some((_, popover_elements)) = &mut layout.hover_popovers {
|
|
for popover_element in popover_elements.iter_mut() {
|
|
if popover_element.dispatch_event(event, cx) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
for block in &mut layout.blocks {
|
|
if block.element.dispatch_event(event, cx) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
match event {
|
|
Event::MouseDown(MouseButtonEvent {
|
|
button: MouseButton::Left,
|
|
position,
|
|
cmd,
|
|
alt,
|
|
shift,
|
|
click_count,
|
|
..
|
|
}) => self.mouse_down(
|
|
*position,
|
|
*cmd,
|
|
*alt,
|
|
*shift,
|
|
*click_count,
|
|
layout,
|
|
paint,
|
|
cx,
|
|
),
|
|
Event::MouseDown(MouseButtonEvent {
|
|
button: MouseButton::Right,
|
|
position,
|
|
..
|
|
}) => self.mouse_right_down(*position, layout, paint, cx),
|
|
Event::MouseUp(MouseButtonEvent {
|
|
button: MouseButton::Left,
|
|
position,
|
|
..
|
|
}) => self.mouse_up(*position, cx),
|
|
Event::MouseMoved(MouseMovedEvent {
|
|
pressed_button: Some(MouseButton::Left),
|
|
position,
|
|
..
|
|
}) => self.mouse_dragged(*position, layout, paint, cx),
|
|
Event::ScrollWheel(ScrollWheelEvent {
|
|
position,
|
|
delta,
|
|
precise,
|
|
}) => self.scroll(*position, *delta, *precise, layout, paint, cx),
|
|
Event::KeyDown(KeyDownEvent { input, .. }) => self.key_down(input.as_deref(), cx),
|
|
Event::ModifiersChanged(ModifiersChangedEvent { cmd, .. }) => {
|
|
self.modifiers_changed(*cmd, cx)
|
|
}
|
|
Event::MouseMoved(MouseMovedEvent { position, cmd, .. }) => {
|
|
self.mouse_moved(*position, *cmd, layout, paint, cx)
|
|
}
|
|
|
|
_ => false,
|
|
}
|
|
}
|
|
|
|
fn debug(
|
|
&self,
|
|
bounds: RectF,
|
|
_: &Self::LayoutState,
|
|
_: &Self::PaintState,
|
|
_: &gpui::DebugContext,
|
|
) -> json::Value {
|
|
json!({
|
|
"type": "BufferElement",
|
|
"bounds": bounds.to_json()
|
|
})
|
|
}
|
|
}
|
|
|
|
pub struct LayoutState {
|
|
size: Vector2F,
|
|
scroll_max: Vector2F,
|
|
gutter_size: Vector2F,
|
|
gutter_padding: f32,
|
|
gutter_margin: f32,
|
|
text_size: Vector2F,
|
|
snapshot: EditorSnapshot,
|
|
active_rows: BTreeMap<u32, bool>,
|
|
highlighted_rows: Option<Range<u32>>,
|
|
line_layouts: Vec<text_layout::Line>,
|
|
line_number_layouts: Vec<Option<text_layout::Line>>,
|
|
blocks: Vec<BlockLayout>,
|
|
line_height: f32,
|
|
em_width: f32,
|
|
em_advance: f32,
|
|
highlighted_ranges: Vec<(Range<DisplayPoint>, Color)>,
|
|
selections: Vec<(ReplicaId, Vec<SelectionLayout>)>,
|
|
context_menu: Option<(DisplayPoint, ElementBox)>,
|
|
code_actions_indicator: Option<(u32, ElementBox)>,
|
|
hover_popovers: Option<(DisplayPoint, Vec<ElementBox>)>,
|
|
}
|
|
|
|
struct BlockLayout {
|
|
row: u32,
|
|
element: ElementBox,
|
|
style: BlockStyle,
|
|
}
|
|
|
|
fn layout_line(
|
|
row: u32,
|
|
snapshot: &EditorSnapshot,
|
|
style: &EditorStyle,
|
|
layout_cache: &TextLayoutCache,
|
|
) -> text_layout::Line {
|
|
let mut line = snapshot.line(row);
|
|
|
|
if line.len() > MAX_LINE_LEN {
|
|
let mut len = MAX_LINE_LEN;
|
|
while !line.is_char_boundary(len) {
|
|
len -= 1;
|
|
}
|
|
|
|
line.truncate(len);
|
|
}
|
|
|
|
layout_cache.layout_str(
|
|
&line,
|
|
style.text.font_size,
|
|
&[(
|
|
snapshot.line_len(row) as usize,
|
|
RunStyle {
|
|
font_id: style.text.font_id,
|
|
color: Color::black(),
|
|
underline: Default::default(),
|
|
},
|
|
)],
|
|
)
|
|
}
|
|
|
|
pub struct PaintState {
|
|
bounds: RectF,
|
|
gutter_bounds: RectF,
|
|
text_bounds: RectF,
|
|
context_menu_bounds: Option<RectF>,
|
|
hover_popover_bounds: Vec<RectF>,
|
|
}
|
|
|
|
impl PaintState {
|
|
/// Returns two display points. The first is the nearest valid
|
|
/// position in the current buffer and the second is the distance to the
|
|
/// nearest valid position if there was overshoot.
|
|
fn point_for_position(
|
|
&self,
|
|
snapshot: &EditorSnapshot,
|
|
layout: &LayoutState,
|
|
position: Vector2F,
|
|
) -> (DisplayPoint, DisplayPoint) {
|
|
let scroll_position = snapshot.scroll_position();
|
|
let position = position - self.text_bounds.origin();
|
|
let y = position.y().max(0.0).min(layout.size.y());
|
|
let row = ((y / layout.line_height) + scroll_position.y()) as u32;
|
|
let row_overshoot = row.saturating_sub(snapshot.max_point().row());
|
|
let row = cmp::min(row, snapshot.max_point().row());
|
|
let line = &layout.line_layouts[(row - scroll_position.y() as u32) as usize];
|
|
let x = position.x() + (scroll_position.x() * layout.em_width);
|
|
|
|
let column = if x >= 0.0 {
|
|
line.index_for_x(x)
|
|
.map(|ix| ix as u32)
|
|
.unwrap_or_else(|| snapshot.line_len(row))
|
|
} else {
|
|
0
|
|
};
|
|
|
|
let point = snapshot.clip_point(DisplayPoint::new(row, column), Bias::Left);
|
|
let mut column_overshoot = (0f32.max(x - line.width()) / layout.em_advance) as u32;
|
|
column_overshoot = column_overshoot + column - point.column();
|
|
|
|
(point, DisplayPoint::new(row_overshoot, column_overshoot))
|
|
}
|
|
}
|
|
|
|
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
|
|
pub enum CursorShape {
|
|
Bar,
|
|
Block,
|
|
Underscore,
|
|
}
|
|
|
|
impl Default for CursorShape {
|
|
fn default() -> Self {
|
|
CursorShape::Bar
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct Cursor {
|
|
origin: Vector2F,
|
|
block_width: f32,
|
|
line_height: f32,
|
|
color: Color,
|
|
shape: CursorShape,
|
|
block_text: Option<Line>,
|
|
}
|
|
|
|
impl Cursor {
|
|
pub fn new(
|
|
origin: Vector2F,
|
|
block_width: f32,
|
|
line_height: f32,
|
|
color: Color,
|
|
shape: CursorShape,
|
|
block_text: Option<Line>,
|
|
) -> Cursor {
|
|
Cursor {
|
|
origin,
|
|
block_width,
|
|
line_height,
|
|
color,
|
|
shape,
|
|
block_text,
|
|
}
|
|
}
|
|
|
|
pub fn paint(&self, origin: Vector2F, cx: &mut PaintContext) {
|
|
let bounds = match self.shape {
|
|
CursorShape::Bar => RectF::new(self.origin + origin, vec2f(2.0, self.line_height)),
|
|
CursorShape::Block => RectF::new(
|
|
self.origin + origin,
|
|
vec2f(self.block_width, self.line_height),
|
|
),
|
|
CursorShape::Underscore => RectF::new(
|
|
self.origin + origin + Vector2F::new(0.0, self.line_height - 2.0),
|
|
vec2f(self.block_width, 2.0),
|
|
),
|
|
};
|
|
|
|
cx.scene.push_quad(Quad {
|
|
bounds,
|
|
background: Some(self.color),
|
|
border: Border::new(0., Color::black()),
|
|
corner_radius: 0.,
|
|
});
|
|
|
|
if let Some(block_text) = &self.block_text {
|
|
block_text.paint(self.origin + origin, bounds, self.line_height, cx);
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct HighlightedRange {
|
|
pub start_y: f32,
|
|
pub line_height: f32,
|
|
pub lines: Vec<HighlightedRangeLine>,
|
|
pub color: Color,
|
|
pub corner_radius: f32,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct HighlightedRangeLine {
|
|
pub start_x: f32,
|
|
pub end_x: f32,
|
|
}
|
|
|
|
impl HighlightedRange {
|
|
pub fn paint(&self, bounds: RectF, scene: &mut Scene) {
|
|
if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
|
|
self.paint_lines(self.start_y, &self.lines[0..1], bounds, scene);
|
|
self.paint_lines(
|
|
self.start_y + self.line_height,
|
|
&self.lines[1..],
|
|
bounds,
|
|
scene,
|
|
);
|
|
} else {
|
|
self.paint_lines(self.start_y, &self.lines, bounds, scene);
|
|
}
|
|
}
|
|
|
|
fn paint_lines(
|
|
&self,
|
|
start_y: f32,
|
|
lines: &[HighlightedRangeLine],
|
|
bounds: RectF,
|
|
scene: &mut Scene,
|
|
) {
|
|
if lines.is_empty() {
|
|
return;
|
|
}
|
|
|
|
let mut path = PathBuilder::new();
|
|
let first_line = lines.first().unwrap();
|
|
let last_line = lines.last().unwrap();
|
|
|
|
let first_top_left = vec2f(first_line.start_x, start_y);
|
|
let first_top_right = vec2f(first_line.end_x, start_y);
|
|
|
|
let curve_height = vec2f(0., self.corner_radius);
|
|
let curve_width = |start_x: f32, end_x: f32| {
|
|
let max = (end_x - start_x) / 2.;
|
|
let width = if max < self.corner_radius {
|
|
max
|
|
} else {
|
|
self.corner_radius
|
|
};
|
|
|
|
vec2f(width, 0.)
|
|
};
|
|
|
|
let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
|
|
path.reset(first_top_right - top_curve_width);
|
|
path.curve_to(first_top_right + curve_height, first_top_right);
|
|
|
|
let mut iter = lines.iter().enumerate().peekable();
|
|
while let Some((ix, line)) = iter.next() {
|
|
let bottom_right = vec2f(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
|
|
|
|
if let Some((_, next_line)) = iter.peek() {
|
|
let next_top_right = vec2f(next_line.end_x, bottom_right.y());
|
|
|
|
match next_top_right.x().partial_cmp(&bottom_right.x()).unwrap() {
|
|
Ordering::Equal => {
|
|
path.line_to(bottom_right);
|
|
}
|
|
Ordering::Less => {
|
|
let curve_width = curve_width(next_top_right.x(), bottom_right.x());
|
|
path.line_to(bottom_right - curve_height);
|
|
if self.corner_radius > 0. {
|
|
path.curve_to(bottom_right - curve_width, bottom_right);
|
|
}
|
|
path.line_to(next_top_right + curve_width);
|
|
if self.corner_radius > 0. {
|
|
path.curve_to(next_top_right + curve_height, next_top_right);
|
|
}
|
|
}
|
|
Ordering::Greater => {
|
|
let curve_width = curve_width(bottom_right.x(), next_top_right.x());
|
|
path.line_to(bottom_right - curve_height);
|
|
if self.corner_radius > 0. {
|
|
path.curve_to(bottom_right + curve_width, bottom_right);
|
|
}
|
|
path.line_to(next_top_right - curve_width);
|
|
if self.corner_radius > 0. {
|
|
path.curve_to(next_top_right + curve_height, next_top_right);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
let curve_width = curve_width(line.start_x, line.end_x);
|
|
path.line_to(bottom_right - curve_height);
|
|
if self.corner_radius > 0. {
|
|
path.curve_to(bottom_right - curve_width, bottom_right);
|
|
}
|
|
|
|
let bottom_left = vec2f(line.start_x, bottom_right.y());
|
|
path.line_to(bottom_left + curve_width);
|
|
if self.corner_radius > 0. {
|
|
path.curve_to(bottom_left - curve_height, bottom_left);
|
|
}
|
|
}
|
|
}
|
|
|
|
if first_line.start_x > last_line.start_x {
|
|
let curve_width = curve_width(last_line.start_x, first_line.start_x);
|
|
let second_top_left = vec2f(last_line.start_x, start_y + self.line_height);
|
|
path.line_to(second_top_left + curve_height);
|
|
if self.corner_radius > 0. {
|
|
path.curve_to(second_top_left + curve_width, second_top_left);
|
|
}
|
|
let first_bottom_left = vec2f(first_line.start_x, second_top_left.y());
|
|
path.line_to(first_bottom_left - curve_width);
|
|
if self.corner_radius > 0. {
|
|
path.curve_to(first_bottom_left - curve_height, first_bottom_left);
|
|
}
|
|
}
|
|
|
|
path.line_to(first_top_left + curve_height);
|
|
if self.corner_radius > 0. {
|
|
path.curve_to(first_top_left + top_curve_width, first_top_left);
|
|
}
|
|
path.line_to(first_top_right - top_curve_width);
|
|
|
|
scene.push_path(path.build(self.color, Some(bounds)));
|
|
}
|
|
}
|
|
|
|
fn scale_vertical_mouse_autoscroll_delta(delta: f32) -> f32 {
|
|
delta.powf(1.5) / 100.0
|
|
}
|
|
|
|
fn scale_horizontal_mouse_autoscroll_delta(delta: f32) -> f32 {
|
|
delta.powf(1.2) / 300.0
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use std::sync::Arc;
|
|
|
|
use super::*;
|
|
use crate::{
|
|
display_map::{BlockDisposition, BlockProperties},
|
|
Editor, MultiBuffer,
|
|
};
|
|
use settings::Settings;
|
|
use util::test::sample_text;
|
|
|
|
#[gpui::test]
|
|
fn test_layout_line_numbers(cx: &mut gpui::MutableAppContext) {
|
|
cx.set_global(Settings::test(cx));
|
|
let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
|
|
let (window_id, editor) = cx.add_window(Default::default(), |cx| {
|
|
Editor::new(EditorMode::Full, buffer, None, None, cx)
|
|
});
|
|
let element = EditorElement::new(
|
|
editor.downgrade(),
|
|
editor.read(cx).style(cx),
|
|
CursorShape::Bar,
|
|
);
|
|
|
|
let layouts = editor.update(cx, |editor, cx| {
|
|
let snapshot = editor.snapshot(cx);
|
|
let mut presenter = cx.build_presenter(window_id, 30.);
|
|
let mut layout_cx = presenter.build_layout_context(Vector2F::zero(), false, cx);
|
|
element.layout_line_numbers(0..6, &Default::default(), &snapshot, &mut layout_cx)
|
|
});
|
|
assert_eq!(layouts.len(), 6);
|
|
}
|
|
|
|
#[gpui::test]
|
|
fn test_layout_with_placeholder_text_and_blocks(cx: &mut gpui::MutableAppContext) {
|
|
cx.set_global(Settings::test(cx));
|
|
let buffer = MultiBuffer::build_simple("", cx);
|
|
let (window_id, editor) = cx.add_window(Default::default(), |cx| {
|
|
Editor::new(EditorMode::Full, buffer, None, None, cx)
|
|
});
|
|
|
|
editor.update(cx, |editor, cx| {
|
|
editor.set_placeholder_text("hello", cx);
|
|
editor.insert_blocks(
|
|
[BlockProperties {
|
|
style: BlockStyle::Fixed,
|
|
disposition: BlockDisposition::Above,
|
|
height: 3,
|
|
position: Anchor::min(),
|
|
render: Arc::new(|_| Empty::new().boxed()),
|
|
}],
|
|
cx,
|
|
);
|
|
|
|
// Blur the editor so that it displays placeholder text.
|
|
cx.blur();
|
|
});
|
|
|
|
let mut element = EditorElement::new(
|
|
editor.downgrade(),
|
|
editor.read(cx).style(cx),
|
|
CursorShape::Bar,
|
|
);
|
|
|
|
let mut scene = Scene::new(1.0);
|
|
let mut presenter = cx.build_presenter(window_id, 30.);
|
|
let mut layout_cx = presenter.build_layout_context(Vector2F::zero(), false, cx);
|
|
let (size, mut state) = element.layout(
|
|
SizeConstraint::new(vec2f(500., 500.), vec2f(500., 500.)),
|
|
&mut layout_cx,
|
|
);
|
|
|
|
assert_eq!(state.line_layouts.len(), 4);
|
|
assert_eq!(
|
|
state
|
|
.line_number_layouts
|
|
.iter()
|
|
.map(Option::is_some)
|
|
.collect::<Vec<_>>(),
|
|
&[false, false, false, true]
|
|
);
|
|
|
|
// Don't panic.
|
|
let bounds = RectF::new(Default::default(), size);
|
|
let mut paint_cx = presenter.build_paint_context(&mut scene, bounds.size(), cx);
|
|
element.paint(bounds, bounds, &mut state, &mut paint_cx);
|
|
}
|
|
}
|