922 lines
31 KiB
Rust
922 lines
31 KiB
Rust
use editor::{Cursor, HighlightedRange, HighlightedRangeLine};
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use gpui::{
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color::Color,
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elements::{Empty, Overlay},
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fonts::{HighlightStyle, Properties, Style::Italic, TextStyle, Underline, Weight},
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geometry::{
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rect::RectF,
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vector::{vec2f, Vector2F},
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},
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platform::{CursorStyle, MouseButton},
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serde_json::json,
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text_layout::{Line, RunStyle},
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AnyElement, Element, EventContext, FontCache, LayoutContext, ModelContext, MouseRegion, Quad,
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SceneBuilder, SizeConstraint, TextLayoutCache, ViewContext, WeakModelHandle,
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};
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use itertools::Itertools;
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use language::CursorShape;
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use ordered_float::OrderedFloat;
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use terminal::{
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alacritty_terminal::{
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ansi::{Color as AnsiColor, Color::Named, CursorShape as AlacCursorShape, NamedColor},
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grid::Dimensions,
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index::Point,
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term::{cell::Flags, TermMode},
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},
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mappings::colors::convert_color,
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IndexedCell, Terminal, TerminalContent, TerminalSettings, TerminalSize,
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};
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use theme::{TerminalStyle, ThemeSettings};
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use util::ResultExt;
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use std::{fmt::Debug, ops::RangeInclusive};
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use std::{mem, ops::Range};
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use crate::TerminalView;
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///The information generated during layout that is necessary for painting
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pub struct LayoutState {
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cells: Vec<LayoutCell>,
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rects: Vec<LayoutRect>,
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relative_highlighted_ranges: Vec<(RangeInclusive<Point>, Color)>,
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cursor: Option<Cursor>,
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background_color: Color,
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size: TerminalSize,
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mode: TermMode,
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display_offset: usize,
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hyperlink_tooltip: Option<AnyElement<TerminalView>>,
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gutter: f32,
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}
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///Helper struct for converting data between alacritty's cursor points, and displayed cursor points
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struct DisplayCursor {
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line: i32,
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col: usize,
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}
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impl DisplayCursor {
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fn from(cursor_point: Point, display_offset: usize) -> Self {
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Self {
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line: cursor_point.line.0 + display_offset as i32,
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col: cursor_point.column.0,
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}
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}
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pub fn line(&self) -> i32 {
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self.line
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}
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pub fn col(&self) -> usize {
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self.col
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}
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}
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#[derive(Clone, Debug, Default)]
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struct LayoutCell {
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point: Point<i32, i32>,
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text: Line,
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}
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impl LayoutCell {
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fn new(point: Point<i32, i32>, text: Line) -> LayoutCell {
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LayoutCell { point, text }
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}
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fn paint(
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&self,
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scene: &mut SceneBuilder,
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origin: Vector2F,
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layout: &LayoutState,
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visible_bounds: RectF,
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_view: &mut TerminalView,
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cx: &mut ViewContext<TerminalView>,
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) {
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let pos = {
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let point = self.point;
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vec2f(
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(origin.x() + point.column as f32 * layout.size.cell_width).floor(),
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origin.y() + point.line as f32 * layout.size.line_height,
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)
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};
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self.text
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.paint(scene, pos, visible_bounds, layout.size.line_height, cx);
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}
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}
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#[derive(Clone, Debug, Default)]
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struct LayoutRect {
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point: Point<i32, i32>,
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num_of_cells: usize,
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color: Color,
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}
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impl LayoutRect {
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fn new(point: Point<i32, i32>, num_of_cells: usize, color: Color) -> LayoutRect {
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LayoutRect {
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point,
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num_of_cells,
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color,
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}
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}
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fn extend(&self) -> Self {
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LayoutRect {
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point: self.point,
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num_of_cells: self.num_of_cells + 1,
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color: self.color,
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}
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}
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fn paint(
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&self,
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scene: &mut SceneBuilder,
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origin: Vector2F,
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layout: &LayoutState,
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_view: &mut TerminalView,
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_cx: &mut ViewContext<TerminalView>,
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) {
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let position = {
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let point = self.point;
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vec2f(
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(origin.x() + point.column as f32 * layout.size.cell_width).floor(),
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origin.y() + point.line as f32 * layout.size.line_height,
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)
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};
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let size = vec2f(
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(layout.size.cell_width * self.num_of_cells as f32).ceil(),
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layout.size.line_height,
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);
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scene.push_quad(Quad {
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bounds: RectF::new(position, size),
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background: Some(self.color),
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border: Default::default(),
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corner_radius: 0.,
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})
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}
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}
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///The GPUI element that paints the terminal.
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///We need to keep a reference to the view for mouse events, do we need it for any other terminal stuff, or can we move that to connection?
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pub struct TerminalElement {
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terminal: WeakModelHandle<Terminal>,
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focused: bool,
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cursor_visible: bool,
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}
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impl TerminalElement {
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pub fn new(
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terminal: WeakModelHandle<Terminal>,
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focused: bool,
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cursor_visible: bool,
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) -> TerminalElement {
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TerminalElement {
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terminal,
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focused,
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cursor_visible,
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}
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}
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//Vec<Range<Point>> -> Clip out the parts of the ranges
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fn layout_grid(
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grid: &Vec<IndexedCell>,
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text_style: &TextStyle,
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terminal_theme: &TerminalStyle,
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text_layout_cache: &TextLayoutCache,
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font_cache: &FontCache,
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hyperlink: Option<(HighlightStyle, &RangeInclusive<Point>)>,
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) -> (Vec<LayoutCell>, Vec<LayoutRect>) {
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let mut cells = vec![];
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let mut rects = vec![];
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let mut cur_rect: Option<LayoutRect> = None;
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let mut cur_alac_color = None;
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let linegroups = grid.into_iter().group_by(|i| i.point.line);
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for (line_index, (_, line)) in linegroups.into_iter().enumerate() {
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for cell in line {
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let mut fg = cell.fg;
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let mut bg = cell.bg;
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if cell.flags.contains(Flags::INVERSE) {
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mem::swap(&mut fg, &mut bg);
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}
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//Expand background rect range
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{
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if matches!(bg, Named(NamedColor::Background)) {
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//Continue to next cell, resetting variables if necessary
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cur_alac_color = None;
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if let Some(rect) = cur_rect {
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rects.push(rect);
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cur_rect = None
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}
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} else {
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match cur_alac_color {
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Some(cur_color) => {
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if bg == cur_color {
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cur_rect = cur_rect.take().map(|rect| rect.extend());
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} else {
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cur_alac_color = Some(bg);
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if cur_rect.is_some() {
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rects.push(cur_rect.take().unwrap());
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}
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cur_rect = Some(LayoutRect::new(
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Point::new(line_index as i32, cell.point.column.0 as i32),
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1,
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convert_color(&bg, &terminal_theme),
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));
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}
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}
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None => {
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cur_alac_color = Some(bg);
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cur_rect = Some(LayoutRect::new(
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Point::new(line_index as i32, cell.point.column.0 as i32),
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1,
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convert_color(&bg, &terminal_theme),
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));
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}
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}
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}
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}
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//Layout current cell text
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{
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let cell_text = &cell.c.to_string();
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if !is_blank(&cell) {
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let cell_style = TerminalElement::cell_style(
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&cell,
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fg,
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terminal_theme,
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text_style,
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font_cache,
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hyperlink,
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);
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let layout_cell = text_layout_cache.layout_str(
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cell_text,
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text_style.font_size,
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&[(cell_text.len(), cell_style)],
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);
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cells.push(LayoutCell::new(
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Point::new(line_index as i32, cell.point.column.0 as i32),
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layout_cell,
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))
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};
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}
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}
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if cur_rect.is_some() {
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rects.push(cur_rect.take().unwrap());
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}
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}
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(cells, rects)
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}
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// Compute the cursor position and expected block width, may return a zero width if x_for_index returns
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// the same position for sequential indexes. Use em_width instead
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fn shape_cursor(
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cursor_point: DisplayCursor,
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size: TerminalSize,
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text_fragment: &Line,
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) -> Option<(Vector2F, f32)> {
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if cursor_point.line() < size.total_lines() as i32 {
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let cursor_width = if text_fragment.width() == 0. {
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size.cell_width()
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} else {
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text_fragment.width()
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};
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//Cursor should always surround as much of the text as possible,
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//hence when on pixel boundaries round the origin down and the width up
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Some((
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vec2f(
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(cursor_point.col() as f32 * size.cell_width()).floor(),
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(cursor_point.line() as f32 * size.line_height()).floor(),
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),
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cursor_width.ceil(),
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))
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} else {
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None
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}
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}
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///Convert the Alacritty cell styles to GPUI text styles and background color
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fn cell_style(
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indexed: &IndexedCell,
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fg: terminal::alacritty_terminal::ansi::Color,
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style: &TerminalStyle,
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text_style: &TextStyle,
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font_cache: &FontCache,
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hyperlink: Option<(HighlightStyle, &RangeInclusive<Point>)>,
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) -> RunStyle {
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let flags = indexed.cell.flags;
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let fg = convert_color(&fg, &style);
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let mut underline = flags
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.intersects(Flags::ALL_UNDERLINES)
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.then(|| Underline {
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color: Some(fg),
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squiggly: flags.contains(Flags::UNDERCURL),
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thickness: OrderedFloat(1.),
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})
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.unwrap_or_default();
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if indexed.cell.hyperlink().is_some() {
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if underline.thickness == OrderedFloat(0.) {
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underline.thickness = OrderedFloat(1.);
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}
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}
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let mut properties = Properties::new();
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if indexed.flags.intersects(Flags::BOLD | Flags::DIM_BOLD) {
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properties = *properties.weight(Weight::BOLD);
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}
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if indexed.flags.intersects(Flags::ITALIC) {
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properties = *properties.style(Italic);
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}
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let font_id = font_cache
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.select_font(text_style.font_family_id, &properties)
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.unwrap_or(text_style.font_id);
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let mut result = RunStyle {
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color: fg,
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font_id,
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underline,
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};
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if let Some((style, range)) = hyperlink {
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if range.contains(&indexed.point) {
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if let Some(underline) = style.underline {
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result.underline = underline;
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}
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if let Some(color) = style.color {
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result.color = color;
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}
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}
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}
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result
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}
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fn generic_button_handler<E>(
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connection: WeakModelHandle<Terminal>,
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origin: Vector2F,
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f: impl Fn(&mut Terminal, Vector2F, E, &mut ModelContext<Terminal>),
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) -> impl Fn(E, &mut TerminalView, &mut EventContext<TerminalView>) {
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move |event, _: &mut TerminalView, cx| {
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cx.focus_parent();
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if let Some(conn_handle) = connection.upgrade(cx) {
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conn_handle.update(cx, |terminal, cx| {
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f(terminal, origin, event, cx);
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cx.notify();
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})
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}
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}
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}
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fn attach_mouse_handlers(
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&self,
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scene: &mut SceneBuilder,
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origin: Vector2F,
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visible_bounds: RectF,
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mode: TermMode,
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cx: &mut ViewContext<TerminalView>,
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) {
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let connection = self.terminal;
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let mut region = MouseRegion::new::<Self>(cx.view_id(), 0, visible_bounds);
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// Terminal Emulator controlled behavior:
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region = region
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// Start selections
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.on_down(MouseButton::Left, move |event, v: &mut TerminalView, cx| {
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cx.focus_parent();
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v.context_menu.update(cx, |menu, _cx| menu.delay_cancel());
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if let Some(conn_handle) = connection.upgrade(cx) {
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conn_handle.update(cx, |terminal, cx| {
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terminal.mouse_down(&event, origin);
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cx.notify();
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})
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}
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})
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// Update drag selections
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.on_drag(MouseButton::Left, move |event, _: &mut TerminalView, cx| {
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if cx.is_self_focused() {
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if let Some(conn_handle) = connection.upgrade(cx) {
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conn_handle.update(cx, |terminal, cx| {
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terminal.mouse_drag(event, origin);
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cx.notify();
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})
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}
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}
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})
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// Copy on up behavior
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.on_up(
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MouseButton::Left,
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TerminalElement::generic_button_handler(
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connection,
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origin,
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move |terminal, origin, e, cx| {
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terminal.mouse_up(&e, origin, cx);
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},
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),
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)
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// Context menu
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.on_click(
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MouseButton::Right,
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move |event, view: &mut TerminalView, cx| {
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let mouse_mode = if let Some(conn_handle) = connection.upgrade(cx) {
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conn_handle.update(cx, |terminal, _cx| terminal.mouse_mode(event.shift))
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} else {
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// If we can't get the model handle, probably can't deploy the context menu
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true
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};
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if !mouse_mode {
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view.deploy_context_menu(event.position, cx);
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}
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},
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)
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.on_move(move |event, _: &mut TerminalView, cx| {
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if cx.is_self_focused() {
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if let Some(conn_handle) = connection.upgrade(cx) {
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conn_handle.update(cx, |terminal, cx| {
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terminal.mouse_move(&event, origin);
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cx.notify();
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})
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}
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}
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})
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.on_scroll(move |event, _: &mut TerminalView, cx| {
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if let Some(conn_handle) = connection.upgrade(cx) {
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conn_handle.update(cx, |terminal, cx| {
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terminal.scroll_wheel(event, origin);
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cx.notify();
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})
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}
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});
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// Mouse mode handlers:
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// All mouse modes need the extra click handlers
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if mode.intersects(TermMode::MOUSE_MODE) {
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region = region
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.on_down(
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MouseButton::Right,
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TerminalElement::generic_button_handler(
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connection,
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origin,
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move |terminal, origin, e, _cx| {
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terminal.mouse_down(&e, origin);
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},
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),
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)
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.on_down(
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MouseButton::Middle,
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TerminalElement::generic_button_handler(
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connection,
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origin,
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move |terminal, origin, e, _cx| {
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terminal.mouse_down(&e, origin);
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},
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),
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)
|
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.on_up(
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MouseButton::Right,
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TerminalElement::generic_button_handler(
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connection,
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origin,
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move |terminal, origin, e, cx| {
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terminal.mouse_up(&e, origin, cx);
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},
|
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),
|
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)
|
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.on_up(
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MouseButton::Middle,
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TerminalElement::generic_button_handler(
|
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connection,
|
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origin,
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move |terminal, origin, e, cx| {
|
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terminal.mouse_up(&e, origin, cx);
|
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},
|
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),
|
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)
|
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}
|
|
|
|
scene.push_mouse_region(region);
|
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}
|
|
}
|
|
|
|
impl Element<TerminalView> for TerminalElement {
|
|
type LayoutState = LayoutState;
|
|
type PaintState = ();
|
|
|
|
fn layout(
|
|
&mut self,
|
|
constraint: gpui::SizeConstraint,
|
|
view: &mut TerminalView,
|
|
cx: &mut LayoutContext<TerminalView>,
|
|
) -> (gpui::geometry::vector::Vector2F, Self::LayoutState) {
|
|
let settings = settings::get::<ThemeSettings>(cx);
|
|
let terminal_settings = settings::get::<TerminalSettings>(cx);
|
|
|
|
//Setup layout information
|
|
let terminal_theme = settings.theme.terminal.clone(); //TODO: Try to minimize this clone.
|
|
let link_style = settings.theme.editor.link_definition;
|
|
let tooltip_style = settings.theme.tooltip.clone();
|
|
|
|
let font_cache = cx.font_cache();
|
|
let font_size = terminal_settings
|
|
.font_size(cx)
|
|
.unwrap_or(settings.buffer_font_size(cx));
|
|
let font_family_name = terminal_settings
|
|
.font_family
|
|
.as_ref()
|
|
.unwrap_or(&settings.buffer_font_family_name);
|
|
let font_features = terminal_settings
|
|
.font_features
|
|
.as_ref()
|
|
.unwrap_or(&settings.buffer_font_features);
|
|
let family_id = font_cache
|
|
.load_family(&[font_family_name], &font_features)
|
|
.log_err()
|
|
.unwrap_or(settings.buffer_font_family);
|
|
let font_id = font_cache
|
|
.select_font(family_id, &Default::default())
|
|
.unwrap();
|
|
|
|
let text_style = TextStyle {
|
|
color: settings.theme.editor.text_color,
|
|
font_family_id: family_id,
|
|
font_family_name: font_cache.family_name(family_id).unwrap(),
|
|
font_id,
|
|
font_size,
|
|
font_properties: Default::default(),
|
|
underline: Default::default(),
|
|
};
|
|
let selection_color = settings.theme.editor.selection.selection;
|
|
let match_color = settings.theme.search.match_background;
|
|
let gutter;
|
|
let dimensions = {
|
|
let line_height = text_style.font_size * terminal_settings.line_height.value();
|
|
let cell_width = font_cache.em_advance(text_style.font_id, text_style.font_size);
|
|
gutter = cell_width;
|
|
|
|
let size = constraint.max - vec2f(gutter, 0.);
|
|
TerminalSize::new(line_height, cell_width, size)
|
|
};
|
|
|
|
let search_matches = if let Some(terminal_model) = self.terminal.upgrade(cx) {
|
|
terminal_model.read(cx).matches.clone()
|
|
} else {
|
|
Default::default()
|
|
};
|
|
|
|
let background_color = terminal_theme.background;
|
|
let terminal_handle = self.terminal.upgrade(cx).unwrap();
|
|
|
|
let last_hovered_hyperlink = terminal_handle.update(cx, |terminal, cx| {
|
|
terminal.set_size(dimensions);
|
|
terminal.try_sync(cx);
|
|
terminal.last_content.last_hovered_hyperlink.clone()
|
|
});
|
|
|
|
let hyperlink_tooltip = last_hovered_hyperlink.map(|(uri, _, id)| {
|
|
let mut tooltip = Overlay::new(
|
|
Empty::new()
|
|
.contained()
|
|
.constrained()
|
|
.with_width(dimensions.width())
|
|
.with_height(dimensions.height())
|
|
.with_tooltip::<TerminalElement>(id, uri, None, tooltip_style, cx),
|
|
)
|
|
.with_position_mode(gpui::elements::OverlayPositionMode::Local)
|
|
.into_any();
|
|
|
|
tooltip.layout(
|
|
SizeConstraint::new(Vector2F::zero(), cx.window_size()),
|
|
view,
|
|
cx,
|
|
);
|
|
tooltip
|
|
});
|
|
|
|
let TerminalContent {
|
|
cells,
|
|
mode,
|
|
display_offset,
|
|
cursor_char,
|
|
selection,
|
|
cursor,
|
|
last_hovered_hyperlink,
|
|
..
|
|
} = { &terminal_handle.read(cx).last_content };
|
|
|
|
// searches, highlights to a single range representations
|
|
let mut relative_highlighted_ranges = Vec::new();
|
|
for search_match in search_matches {
|
|
relative_highlighted_ranges.push((search_match, match_color))
|
|
}
|
|
if let Some(selection) = selection {
|
|
relative_highlighted_ranges.push((selection.start..=selection.end, selection_color));
|
|
}
|
|
|
|
// then have that representation be converted to the appropriate highlight data structure
|
|
|
|
let (cells, rects) = TerminalElement::layout_grid(
|
|
cells,
|
|
&text_style,
|
|
&terminal_theme,
|
|
cx.text_layout_cache(),
|
|
cx.font_cache(),
|
|
last_hovered_hyperlink
|
|
.as_ref()
|
|
.map(|(_, range, _)| (link_style, range)),
|
|
);
|
|
|
|
//Layout cursor. Rectangle is used for IME, so we should lay it out even
|
|
//if we don't end up showing it.
|
|
let cursor = if let AlacCursorShape::Hidden = cursor.shape {
|
|
None
|
|
} else {
|
|
let cursor_point = DisplayCursor::from(cursor.point, *display_offset);
|
|
let cursor_text = {
|
|
let str_trxt = cursor_char.to_string();
|
|
|
|
let color = if self.focused {
|
|
terminal_theme.background
|
|
} else {
|
|
terminal_theme.foreground
|
|
};
|
|
|
|
cx.text_layout_cache().layout_str(
|
|
&str_trxt,
|
|
text_style.font_size,
|
|
&[(
|
|
str_trxt.len(),
|
|
RunStyle {
|
|
font_id: text_style.font_id,
|
|
color,
|
|
underline: Default::default(),
|
|
},
|
|
)],
|
|
)
|
|
};
|
|
|
|
let focused = self.focused;
|
|
TerminalElement::shape_cursor(cursor_point, dimensions, &cursor_text).map(
|
|
move |(cursor_position, block_width)| {
|
|
let (shape, text) = match cursor.shape {
|
|
AlacCursorShape::Block if !focused => (CursorShape::Hollow, None),
|
|
AlacCursorShape::Block => (CursorShape::Block, Some(cursor_text)),
|
|
AlacCursorShape::Underline => (CursorShape::Underscore, None),
|
|
AlacCursorShape::Beam => (CursorShape::Bar, None),
|
|
AlacCursorShape::HollowBlock => (CursorShape::Hollow, None),
|
|
//This case is handled in the if wrapping the whole cursor layout
|
|
AlacCursorShape::Hidden => unreachable!(),
|
|
};
|
|
|
|
Cursor::new(
|
|
cursor_position,
|
|
block_width,
|
|
dimensions.line_height,
|
|
terminal_theme.cursor,
|
|
shape,
|
|
text,
|
|
)
|
|
},
|
|
)
|
|
};
|
|
|
|
//Done!
|
|
(
|
|
constraint.max,
|
|
LayoutState {
|
|
cells,
|
|
cursor,
|
|
background_color,
|
|
size: dimensions,
|
|
rects,
|
|
relative_highlighted_ranges,
|
|
mode: *mode,
|
|
display_offset: *display_offset,
|
|
hyperlink_tooltip,
|
|
gutter,
|
|
},
|
|
)
|
|
}
|
|
|
|
fn paint(
|
|
&mut self,
|
|
scene: &mut SceneBuilder,
|
|
bounds: RectF,
|
|
visible_bounds: RectF,
|
|
layout: &mut Self::LayoutState,
|
|
view: &mut TerminalView,
|
|
cx: &mut ViewContext<TerminalView>,
|
|
) -> Self::PaintState {
|
|
let visible_bounds = bounds.intersection(visible_bounds).unwrap_or_default();
|
|
|
|
//Setup element stuff
|
|
let clip_bounds = Some(visible_bounds);
|
|
|
|
scene.paint_layer(clip_bounds, |scene| {
|
|
let origin = bounds.origin() + vec2f(layout.gutter, 0.);
|
|
|
|
// Elements are ephemeral, only at paint time do we know what could be clicked by a mouse
|
|
self.attach_mouse_handlers(scene, origin, visible_bounds, layout.mode, cx);
|
|
|
|
scene.push_cursor_region(gpui::CursorRegion {
|
|
bounds,
|
|
style: if layout.hyperlink_tooltip.is_some() {
|
|
CursorStyle::PointingHand
|
|
} else {
|
|
CursorStyle::IBeam
|
|
},
|
|
});
|
|
|
|
scene.paint_layer(clip_bounds, |scene| {
|
|
//Start with a background color
|
|
scene.push_quad(Quad {
|
|
bounds: RectF::new(bounds.origin(), bounds.size()),
|
|
background: Some(layout.background_color),
|
|
border: Default::default(),
|
|
corner_radius: 0.,
|
|
});
|
|
|
|
for rect in &layout.rects {
|
|
rect.paint(scene, origin, layout, view, cx)
|
|
}
|
|
});
|
|
|
|
//Draw Highlighted Backgrounds
|
|
scene.paint_layer(clip_bounds, |scene| {
|
|
for (relative_highlighted_range, color) in layout.relative_highlighted_ranges.iter()
|
|
{
|
|
if let Some((start_y, highlighted_range_lines)) =
|
|
to_highlighted_range_lines(relative_highlighted_range, layout, origin)
|
|
{
|
|
let hr = HighlightedRange {
|
|
start_y, //Need to change this
|
|
line_height: layout.size.line_height,
|
|
lines: highlighted_range_lines,
|
|
color: color.clone(),
|
|
//Copied from editor. TODO: move to theme or something
|
|
corner_radius: 0.15 * layout.size.line_height,
|
|
};
|
|
hr.paint(bounds, scene);
|
|
}
|
|
}
|
|
});
|
|
|
|
//Draw the text cells
|
|
scene.paint_layer(clip_bounds, |scene| {
|
|
for cell in &layout.cells {
|
|
cell.paint(scene, origin, layout, visible_bounds, view, cx);
|
|
}
|
|
});
|
|
|
|
//Draw cursor
|
|
if self.cursor_visible {
|
|
if let Some(cursor) = &layout.cursor {
|
|
scene.paint_layer(clip_bounds, |scene| {
|
|
cursor.paint(scene, origin, cx);
|
|
})
|
|
}
|
|
}
|
|
|
|
if let Some(element) = &mut layout.hyperlink_tooltip {
|
|
element.paint(scene, origin, visible_bounds, view, cx)
|
|
}
|
|
});
|
|
}
|
|
|
|
fn metadata(&self) -> Option<&dyn std::any::Any> {
|
|
None
|
|
}
|
|
|
|
fn debug(
|
|
&self,
|
|
_: RectF,
|
|
_: &Self::LayoutState,
|
|
_: &Self::PaintState,
|
|
_: &TerminalView,
|
|
_: &gpui::ViewContext<TerminalView>,
|
|
) -> gpui::serde_json::Value {
|
|
json!({
|
|
"type": "TerminalElement",
|
|
})
|
|
}
|
|
|
|
fn rect_for_text_range(
|
|
&self,
|
|
_: Range<usize>,
|
|
bounds: RectF,
|
|
_: RectF,
|
|
layout: &Self::LayoutState,
|
|
_: &Self::PaintState,
|
|
_: &TerminalView,
|
|
_: &gpui::ViewContext<TerminalView>,
|
|
) -> Option<RectF> {
|
|
// Use the same origin that's passed to `Cursor::paint` in the paint
|
|
// method bove.
|
|
let mut origin = bounds.origin() + vec2f(layout.size.cell_width, 0.);
|
|
|
|
// TODO - Why is it necessary to move downward one line to get correct
|
|
// positioning? I would think that we'd want the same rect that is
|
|
// painted for the cursor.
|
|
origin += vec2f(0., layout.size.line_height);
|
|
|
|
Some(layout.cursor.as_ref()?.bounding_rect(origin))
|
|
}
|
|
}
|
|
|
|
fn is_blank(cell: &IndexedCell) -> bool {
|
|
if cell.c != ' ' {
|
|
return false;
|
|
}
|
|
|
|
if cell.bg != AnsiColor::Named(NamedColor::Background) {
|
|
return false;
|
|
}
|
|
|
|
if cell.hyperlink().is_some() {
|
|
return false;
|
|
}
|
|
|
|
if cell
|
|
.flags
|
|
.intersects(Flags::ALL_UNDERLINES | Flags::INVERSE | Flags::STRIKEOUT)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
fn to_highlighted_range_lines(
|
|
range: &RangeInclusive<Point>,
|
|
layout: &LayoutState,
|
|
origin: Vector2F,
|
|
) -> Option<(f32, Vec<HighlightedRangeLine>)> {
|
|
// Step 1. Normalize the points to be viewport relative.
|
|
// When display_offset = 1, here's how the grid is arranged:
|
|
//-2,0 -2,1...
|
|
//--- Viewport top
|
|
//-1,0 -1,1...
|
|
//--------- Terminal Top
|
|
// 0,0 0,1...
|
|
// 1,0 1,1...
|
|
//--- Viewport Bottom
|
|
// 2,0 2,1...
|
|
//--------- Terminal Bottom
|
|
|
|
// Normalize to viewport relative, from terminal relative.
|
|
// lines are i32s, which are negative above the top left corner of the terminal
|
|
// If the user has scrolled, we use the display_offset to tell us which offset
|
|
// of the grid data we should be looking at. But for the rendering step, we don't
|
|
// want negatives. We want things relative to the 'viewport' (the area of the grid
|
|
// which is currently shown according to the display offset)
|
|
let unclamped_start = Point::new(
|
|
range.start().line + layout.display_offset,
|
|
range.start().column,
|
|
);
|
|
let unclamped_end = Point::new(range.end().line + layout.display_offset, range.end().column);
|
|
|
|
// Step 2. Clamp range to viewport, and return None if it doesn't overlap
|
|
if unclamped_end.line.0 < 0 || unclamped_start.line.0 > layout.size.num_lines() as i32 {
|
|
return None;
|
|
}
|
|
|
|
let clamped_start_line = unclamped_start.line.0.max(0) as usize;
|
|
let clamped_end_line = unclamped_end.line.0.min(layout.size.num_lines() as i32) as usize;
|
|
//Convert the start of the range to pixels
|
|
let start_y = origin.y() + clamped_start_line as f32 * layout.size.line_height;
|
|
|
|
// Step 3. Expand ranges that cross lines into a collection of single-line ranges.
|
|
// (also convert to pixels)
|
|
let mut highlighted_range_lines = Vec::new();
|
|
for line in clamped_start_line..=clamped_end_line {
|
|
let mut line_start = 0;
|
|
let mut line_end = layout.size.columns();
|
|
|
|
if line == clamped_start_line {
|
|
line_start = unclamped_start.column.0 as usize;
|
|
}
|
|
if line == clamped_end_line {
|
|
line_end = unclamped_end.column.0 as usize + 1; //+1 for inclusive
|
|
}
|
|
|
|
highlighted_range_lines.push(HighlightedRangeLine {
|
|
start_x: origin.x() + line_start as f32 * layout.size.cell_width,
|
|
end_x: origin.x() + line_end as f32 * layout.size.cell_width,
|
|
});
|
|
}
|
|
|
|
Some((start_y, highlighted_range_lines))
|
|
}
|