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editor.rs
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editor.rs
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use std::time::Duration;
use std::{iter::Iterator, sync::Arc};
use druid::TimerToken;
use druid::{
kurbo::{BezPath, Line},
piet::{PietText, PietTextLayout, Text, TextLayout as _, TextLayoutBuilder},
BoxConstraints, Color, Command, Env, Event, EventCtx, InternalLifeCycle,
LayoutCtx, LifeCycle, LifeCycleCtx, MouseButton, MouseEvent, PaintCtx, Point,
Rect, RenderContext, Size, Target, UpdateCtx, Widget, WidgetId,
};
use lapce_core::buffer::DiffLines;
use lapce_core::command::EditCommand;
use lapce_core::{
command::FocusCommand,
cursor::{ColPosition, CursorMode},
mode::{Mode, VisualMode},
movement::Movement,
};
use lapce_data::command::CommandKind;
use lapce_data::data::{EditorView, LapceData};
use lapce_data::document::{BufferContent, LocalBufferKind};
use lapce_data::keypress::KeyPressFocus;
use lapce_data::menu::MenuKind;
use lapce_data::{
command::{
LapceCommand, LapceUICommand, LapceWorkbenchCommand, LAPCE_UI_COMMAND,
},
config::{Config, LapceTheme},
data::{LapceTabData, PanelData, PanelKind},
editor::{LapceEditorBufferData, Syntax},
menu::MenuItem,
panel::PanelPosition,
};
use lsp_types::{CodeActionOrCommand, DiagnosticSeverity};
pub mod container;
pub mod gutter;
pub mod header;
pub mod tab;
pub mod tab_header;
pub mod tab_header_content;
pub mod view;
pub struct LapceEditor {
view_id: WidgetId,
editor_id: WidgetId,
placeholder: Option<String>,
mouse_pos: Point,
/// A timer for listening for when the user has hovered for long enough to trigger showing
/// of hover info (if there is any)
mouse_hover_timer: TimerToken,
drag_timer: TimerToken,
}
impl LapceEditor {
pub fn new(view_id: WidgetId, editor_id: WidgetId) -> Self {
Self {
view_id,
editor_id,
placeholder: None,
mouse_pos: Point::ZERO,
mouse_hover_timer: TimerToken::INVALID,
drag_timer: TimerToken::INVALID,
}
}
fn mouse_within_scroll(
&self,
editor_data: &LapceEditorBufferData,
point: Point,
) -> bool {
let scroll_offset = editor_data.editor.scroll_offset;
let size = *editor_data.editor.size.borrow();
scroll_offset.x <= point.x
&& point.x <= scroll_offset.x + size.width
&& scroll_offset.y <= point.y
&& point.y <= scroll_offset.y + size.height
}
fn mouse_drag(
&mut self,
ctx: &mut EventCtx,
editor_data: &LapceEditorBufferData,
config: &Config,
) -> bool {
if !ctx.is_active() {
return false;
}
let line_height = config.editor.line_height as f64;
let scroll_offset = editor_data.editor.scroll_offset;
let size = *editor_data.editor.size.borrow();
let y_distance_1 = self.mouse_pos.y - scroll_offset.y;
let y_distance_2 = scroll_offset.y + size.height - self.mouse_pos.y;
let y_diff = if y_distance_1 < line_height {
let shift = if y_distance_1 > 0.0 {
y_distance_1
} else {
0.0
};
-line_height + shift
} else if y_distance_2 < line_height {
let shift = if y_distance_2 > 0.0 {
y_distance_2
} else {
0.0
};
line_height - shift
} else {
0.0
};
let x_diff = if self.mouse_pos.x < editor_data.editor.scroll_offset.x {
-5.0
} else if self.mouse_pos.x
> editor_data.editor.scroll_offset.x
+ editor_data.editor.size.borrow().width
{
5.0
} else {
0.0
};
if x_diff != 0.0 || y_diff != 0.0 {
ctx.submit_command(Command::new(
LAPCE_UI_COMMAND,
LapceUICommand::Scroll((x_diff, y_diff)),
Target::Widget(editor_data.view_id),
));
self.drag_timer = ctx.request_timer(Duration::from_millis(16), None);
return true;
}
false
}
fn mouse_move(
&mut self,
ctx: &mut EventCtx,
mouse_pos: Point,
editor_data: &mut LapceEditorBufferData,
config: &Config,
) {
let mouse_actually_moved = self.mouse_pos != mouse_pos;
self.mouse_pos = mouse_pos;
self.mouse_hover_timer = TimerToken::INVALID;
let dragged = self.mouse_drag(ctx, editor_data, config);
if !mouse_actually_moved && !dragged {
return;
}
if ctx.is_active() {
let (new_offset, _) = editor_data.doc.offset_of_point(
ctx.text(),
editor_data.get_mode(),
mouse_pos,
config.editor.font_size,
config,
);
let editor = Arc::make_mut(&mut editor_data.editor);
editor.cursor.set_offset(new_offset, true, false);
return;
}
let (offset, is_inside) = editor_data.doc.offset_of_point(
ctx.text(),
Mode::Insert,
mouse_pos,
config.editor.font_size,
config,
);
let within_scroll = self.mouse_within_scroll(editor_data, mouse_pos);
if !editor_data.check_hover(ctx, offset, is_inside, within_scroll)
&& is_inside
&& within_scroll
{
self.mouse_hover_timer = ctx.request_timer(
Duration::from_millis(config.editor.hover_delay),
None,
);
}
}
fn mouse_down(
&mut self,
ctx: &mut EventCtx,
mouse_event: &MouseEvent,
editor_data: &mut LapceEditorBufferData,
config: &Config,
) {
ctx.set_handled();
match mouse_event.button {
MouseButton::Left => {
self.left_click(ctx, mouse_event, editor_data, config);
editor_data.get_code_actions(ctx);
editor_data.cancel_completion();
// TODO: Don't cancel over here, because it would good to allow the user to
// select text inside the hover data
editor_data.cancel_hover();
}
MouseButton::Right => {
self.mouse_hover_timer = TimerToken::INVALID;
self.right_click(ctx, editor_data, mouse_event, config);
editor_data.get_code_actions(ctx);
editor_data.cancel_completion();
editor_data.cancel_hover();
}
MouseButton::Middle => {}
_ => (),
}
}
fn left_click(
&mut self,
ctx: &mut EventCtx,
mouse_event: &MouseEvent,
editor_data: &mut LapceEditorBufferData,
config: &Config,
) {
match mouse_event.count {
1 => {
editor_data.single_click(ctx, mouse_event, config);
}
2 => {
editor_data.double_click(ctx, mouse_event, config);
}
3 => {
editor_data.triple_click(ctx, mouse_event, config);
}
_ => {}
}
}
fn right_click(
&mut self,
ctx: &mut EventCtx,
editor_data: &mut LapceEditorBufferData,
mouse_event: &MouseEvent,
config: &Config,
) {
let (offset, _) = editor_data.doc.offset_of_point(
ctx.text(),
editor_data.get_mode(),
mouse_event.pos,
config.editor.font_size,
config,
);
if !editor_data
.editor
.cursor
.edit_selection(editor_data.doc.buffer())
.contains(offset)
{
editor_data.single_click(ctx, mouse_event, config);
}
let menu_items = vec![
MenuKind::Item(MenuItem {
desc: None,
command: LapceCommand {
kind: CommandKind::Focus(FocusCommand::GotoDefinition),
data: None,
},
}),
MenuKind::Item(MenuItem {
desc: None,
command: LapceCommand {
kind: CommandKind::Workbench(
LapceWorkbenchCommand::PaletteCommand,
),
data: None,
},
}),
MenuKind::Separator,
MenuKind::Item(MenuItem {
desc: None,
command: LapceCommand {
kind: CommandKind::Edit(EditCommand::ClipboardCut),
data: None,
},
}),
MenuKind::Item(MenuItem {
desc: None,
command: LapceCommand {
kind: CommandKind::Edit(EditCommand::ClipboardCopy),
data: None,
},
}),
MenuKind::Item(MenuItem {
desc: None,
command: LapceCommand {
kind: CommandKind::Edit(EditCommand::ClipboardPaste),
data: None,
},
}),
];
ctx.submit_command(Command::new(
LAPCE_UI_COMMAND,
LapceUICommand::ShowMenu(
ctx.to_window(mouse_event.pos),
Arc::new(menu_items),
),
Target::Widget(*editor_data.main_split.tab_id),
));
}
pub fn get_size(
data: &LapceEditorBufferData,
text: &mut PietText,
editor_size: Size,
panels: &im::HashMap<PanelPosition, Arc<PanelData>>,
env: &Env,
) -> Size {
let line_height = data.config.editor.line_height as f64;
let width = data.config.editor_char_width(text);
match &data.editor.content {
BufferContent::File(_)
| BufferContent::Scratch(..)
| BufferContent::Local(LocalBufferKind::Empty) => {
if data.editor.code_lens {
if let Some(syntax) = data.doc.syntax() {
let height =
syntax.lens.height_of_line(syntax.lens.len() + 1);
Size::new(
(width * data.doc.buffer().max_len() as f64)
.max(editor_size.width),
if data.config.editor.scroll_beyond_last_line {
(height as f64 - line_height).max(0.0)
+ editor_size.height
} else {
(height as f64).max(editor_size.height)
},
)
} else {
let height = data.doc.buffer().num_lines()
* data.config.editor.code_lens_font_size;
Size::new(
(width * data.doc.buffer().max_len() as f64)
.max(editor_size.width),
if data.config.editor.scroll_beyond_last_line {
(height as f64 - line_height).max(0.0)
+ editor_size.height
} else {
(height as f64).max(editor_size.height)
},
)
}
} else if let Some(compare) = data.editor.compare.as_ref() {
let mut lines = 0;
if let Some(history) = data.doc.get_history(compare) {
for change in history.changes().iter() {
match change {
DiffLines::Left(l) => lines += l.len(),
DiffLines::Both(_l, r) => lines += r.len(),
DiffLines::Skip(_l, _r) => lines += 1,
DiffLines::Right(r) => lines += r.len(),
}
}
}
Size::new(
(width * data.doc.buffer().max_len() as f64)
.max(editor_size.width),
if data.config.editor.scroll_beyond_last_line {
(line_height * lines as f64 - line_height).max(0.0)
+ editor_size.height
} else {
(line_height * lines as f64).max(editor_size.height)
},
)
} else {
Size::new(
(width * data.doc.buffer().max_len() as f64)
.max(editor_size.width),
if data.config.editor.scroll_beyond_last_line {
(line_height * data.doc.buffer().num_lines() as f64
- line_height)
.max(0.0)
+ editor_size.height
} else {
(line_height * data.doc.buffer().num_lines() as f64)
.max(editor_size.height)
},
)
}
}
BufferContent::Local(LocalBufferKind::SourceControl) => {
for (pos, panels) in panels.iter() {
for panel_kind in panels.widgets.iter() {
if panel_kind == &PanelKind::SourceControl {
return match pos {
PanelPosition::BottomLeft
| PanelPosition::BottomRight => {
let width = 200.0;
Size::new(width, editor_size.height)
}
_ => {
let height = 100.0f64;
let height = height.max(
line_height
* data.doc.buffer().num_lines() as f64,
);
Size::new(
(width * data.doc.buffer().max_len() as f64)
.max(editor_size.width),
height,
)
}
};
}
}
}
Size::ZERO
}
// Almost the same as the general case below but with less vertical padding
BufferContent::Local(LocalBufferKind::PathName) => Size::new(
editor_size.width.max(
data.doc
.get_text_layout(
text,
0,
data.config.editor.font_size,
&data.config,
)
.size()
.width,
),
env.get(LapceTheme::INPUT_LINE_HEIGHT)
+ env.get(LapceTheme::INPUT_LINE_PADDING),
),
_ => Size::new(
editor_size.width.max(
data.doc
.get_text_layout(
text,
0,
data.config.editor.font_size,
&data.config,
)
.size()
.width,
),
env.get(LapceTheme::INPUT_LINE_HEIGHT)
+ env.get(LapceTheme::INPUT_LINE_PADDING) * 2.0,
),
}
}
pub fn paint_code_lens_content(
data: &LapceEditorBufferData,
ctx: &mut PaintCtx,
is_focused: bool,
) {
let rect = ctx.region().bounding_box();
let ref_text_layout = ctx
.text()
.new_text_layout("W")
.font(
data.config.editor.font_family(),
data.config.editor.font_size as f64,
)
.build()
.unwrap();
let char_width = ref_text_layout.size().width;
let y_shift = (data.config.editor.line_height as f64
- ref_text_layout.size().height)
/ 2.0;
let small_char_width = data
.config
.char_width(ctx.text(), data.config.editor.code_lens_font_size as f64);
let empty_lens = Syntax::lens_from_normal_lines(
data.doc.buffer().len(),
data.config.editor.line_height,
data.config.editor.code_lens_font_size,
&[],
);
let lens = if let Some(syntax) = data.doc.syntax() {
&syntax.lens
} else {
&empty_lens
};
let cursor_line = data.doc.buffer().line_of_offset(
data.editor.cursor.offset().min(data.doc.buffer().len()),
);
let last_line = data.doc.buffer().line_of_offset(data.doc.buffer().len());
let start_line =
lens.line_of_height(rect.y0.floor() as usize).min(last_line);
let end_line = lens
.line_of_height(rect.y1.ceil() as usize + data.config.editor.line_height)
.min(last_line);
let start_offset = data.doc.buffer().offset_of_line(start_line);
let end_offset = data.doc.buffer().offset_of_line(end_line + 1);
let mut lines_iter =
data.doc.buffer().text().lines(start_offset..end_offset);
let mut y = lens.height_of_line(start_line) as f64;
for (line, line_height) in lens.iter_chunks(start_line..end_line + 1) {
if let Some(line_content) = lines_iter.next() {
let is_small = line_height < data.config.editor.line_height;
let mut x = 0.0;
if is_small {
for ch in line_content.chars() {
if ch == ' ' {
x += char_width - small_char_width;
} else if ch == '\t' {
x += (char_width - small_char_width)
* data.config.editor.tab_width as f64;
} else {
break;
}
}
}
Self::paint_cursor_on_line(
data,
ctx,
is_focused,
cursor_line,
line,
x,
y,
if is_small {
small_char_width
} else {
char_width
},
line_height as f64,
);
let text_layout = data.doc.get_text_layout(
ctx.text(),
line,
if is_small {
data.config.editor.code_lens_font_size
} else {
data.config.editor.font_size
},
&data.config,
);
ctx.draw_text(
&text_layout,
Point::new(x, if is_small { y } else { y + y_shift }),
);
y += line_height as f64;
}
}
}
fn paint_content(
&mut self,
data: &LapceEditorBufferData,
ctx: &mut PaintCtx,
is_focused: bool,
env: &Env,
) {
let line_height = Self::line_height(data, env);
let line_padding = Self::line_padding(data, env);
let font_size = if data.editor.content.is_input() {
env.get(LapceTheme::INPUT_FONT_SIZE) as usize
} else {
data.config.editor.font_size
};
let text_layout = ctx
.text()
.new_text_layout("W")
.font(data.config.editor.font_family(), font_size as f64)
.build()
.unwrap();
let char_width = text_layout.size().width;
let y_shift = (line_height - text_layout.size().height) / 2.0;
//if data.editor.content.is_input()
// || (data.editor.compare.is_none() && !data.editor.code_lens)
//{
// Self::paint_cursor(
// data,
// ctx,
// is_focused,
// self.placeholder.as_ref(),
// char_width,
// env,
// );
// Self::paint_find(data, ctx, char_width, env);
//}
let self_size = ctx.size();
let rect = ctx.region().bounding_box();
let start_line = (rect.y0 / line_height).floor() as usize;
let end_line = (rect.y1 / line_height).ceil() as usize;
if !data.editor.content.is_input() && data.editor.code_lens {
Self::paint_code_lens_content(data, ctx, is_focused);
} else if let EditorView::Diff(version) = &data.editor.view {
if let Some(history) = data.doc.get_history(version) {
let cursor_line = data
.doc
.buffer()
.line_of_offset(data.editor.cursor.offset());
let mut line = 0;
for change in history.changes().iter() {
match change {
DiffLines::Left(range) => {
let len = range.len();
line += len;
if line < start_line {
continue;
}
ctx.fill(
Size::new(self_size.width, line_height * len as f64)
.to_rect()
.with_origin(Point::new(
0.0,
line_height * (line - len) as f64,
)),
data.config.get_color_unchecked(
LapceTheme::SOURCE_CONTROL_REMOVED,
),
);
for l in line - len..line {
if l < start_line {
continue;
}
let actual_line = l - (line - len) + range.start;
let text_layout = history.get_text_layout(
ctx.text(),
actual_line,
&data.config,
);
ctx.draw_text(
&text_layout,
Point::new(
0.0,
line_height * l as f64 + y_shift,
),
);
if l > end_line {
break;
}
}
}
DiffLines::Skip(left, right) => {
let rect = Size::new(self_size.width, line_height)
.to_rect()
.with_origin(Point::new(
0.0,
line_height * line as f64,
));
ctx.fill(
rect,
data.config.get_color_unchecked(
LapceTheme::PANEL_BACKGROUND,
),
);
ctx.stroke(
rect,
data.config.get_color_unchecked(
LapceTheme::EDITOR_FOREGROUND,
),
1.0,
);
let text_layout = ctx
.text()
.new_text_layout(format!(
" -{}, +{}",
left.end + 1,
right.end + 1
))
.font(
data.config.editor.font_family(),
font_size as f64,
)
.text_color(
data.config
.get_color_unchecked(
LapceTheme::EDITOR_FOREGROUND,
)
.clone(),
)
.build()
.unwrap();
ctx.draw_text(
&text_layout,
Point::new(0.0, line_height * line as f64 + y_shift),
);
line += 1;
}
DiffLines::Both(_left, right) => {
let len = right.len();
line += len;
if line < start_line {
continue;
}
for l in line - len..line {
if l < start_line {
continue;
}
let rope_line = l - (line - len) + right.start;
Self::paint_cursor_on_line(
data,
ctx,
is_focused,
cursor_line,
rope_line,
0.0,
l as f64 * line_height,
char_width,
line_height,
);
let text_layout = data.doc.get_text_layout(
ctx.text(),
rope_line,
font_size,
&data.config,
);
ctx.draw_text(
&text_layout,
Point::new(
0.0,
line_height * l as f64 + y_shift,
),
);
if l > end_line {
break;
}
}
}
DiffLines::Right(range) => {
let len = range.len();
line += len;
if line < start_line {
continue;
}
ctx.fill(
Size::new(
self_size.width,
line_height * range.len() as f64,
)
.to_rect()
.with_origin(
Point::new(
0.0,
line_height * (line - range.len()) as f64,
),
),
data.config.get_color_unchecked(
LapceTheme::SOURCE_CONTROL_ADDED,
),
);
for l in line - len..line {
if l < start_line {
continue;
}
let rope_line = l - (line - len) + range.start;
Self::paint_cursor_on_line(
data,
ctx,
is_focused,
cursor_line,
rope_line,
0.0,
l as f64 * line_height,
char_width,
line_height,
);
let text_layout = data.doc.get_text_layout(
ctx.text(),
rope_line,
font_size,
&data.config,
);
ctx.draw_text(
&text_layout,
Point::new(
0.0,
line_height * l as f64 + y_shift,
),
);
if l > end_line {
break;
}
}
}
}
}
}
return;
} else {
let last_line = data.doc.buffer().last_line();
Self::paint_cursor(
data,
ctx,
is_focused,
self.placeholder.as_ref(),
char_width,
font_size,
env,
);
Self::paint_find(data, ctx, char_width, env);
for line in start_line..end_line + 1 {
if line > last_line {
break;
}
let text_layout = data.doc.get_text_layout(
ctx.text(),
line,
font_size,
&data.config,
);
ctx.draw_text(
&text_layout,
Point::new(
0.0,
line_height * line as f64
+ (line_height - text_layout.size().height) / 2.0
+ line_padding,
),
);
}
}
Self::paint_snippet(data, ctx);
Self::paint_diagnostics(data, ctx);
if data.doc.buffer().is_empty() {
if let Some(placeholder) = self.placeholder.as_ref() {
let text_layout = ctx
.text()
.new_text_layout(placeholder.to_string())
.font(
data.config.ui.font_family(),
data.config.ui.font_size() as f64,
)
.text_color(
data.config
.get_color_unchecked(LapceTheme::EDITOR_DIM)
.clone(),
)
.build()
.unwrap();
ctx.draw_text(&text_layout, Point::new(0.0, y_shift));
}
}
}
#[allow(clippy::too_many_arguments)]
fn paint_cursor_on_line(
data: &LapceEditorBufferData,
ctx: &mut PaintCtx,
is_focused: bool,
cursor_line: usize,
actual_line: usize,
x_shift: f64,
y: f64,
char_width: f64,
line_height: f64,
) {
match &data.editor.cursor.mode {
CursorMode::Normal(_) => {}
CursorMode::Visual { start, end, mode } => {
let (start_line, start_col) =
data.doc.buffer().offset_to_line_col(*start.min(end));
let (end_line, end_col) =
data.doc.buffer().offset_to_line_col(*start.max(end));
if actual_line < start_line || actual_line > end_line {
return;
}
let left_col = match mode {
VisualMode::Normal => {
if start_line == actual_line {
start_col
} else {
0
}
}
VisualMode::Linewise => 0,
VisualMode::Blockwise => {
let max_col =
data.doc.buffer().line_end_col(actual_line, false);
let left = start_col.min(end_col);
if left > max_col {
return;
}
left
}
};
let right_col = match mode {
VisualMode::Normal => {
if actual_line == end_line {
let max_col =
data.doc.buffer().line_end_col(actual_line, true);
(end_col + 1).min(max_col)
} else {
data.doc.buffer().line_end_col(actual_line, true) + 1
}
}
VisualMode::Linewise => {
data.doc.buffer().line_end_col(actual_line, true) + 1
}
VisualMode::Blockwise => {
let max_col =
data.doc.buffer().line_end_col(actual_line, true);
let right = match data.editor.cursor.horiz.as_ref() {
Some(&ColPosition::End) => max_col,
_ => (end_col.max(start_col) + 1).min(max_col),
};
right
}
};
let x0 = left_col as f64 * char_width + x_shift;
let x1 = right_col as f64 * char_width + x_shift;
let y0 = y;
let y1 = y0 + line_height;
ctx.fill(
Rect::new(x0, y0, x1, y1),
data.config
.get_color_unchecked(LapceTheme::EDITOR_SELECTION),
);
}
CursorMode::Insert(selection) => {
let start_offset = data.doc.buffer().offset_of_line(actual_line);
let end_offset = data.doc.buffer().offset_of_line(actual_line + 1);
let regions = selection.regions_in_range(start_offset, end_offset);
for region in regions {
if region.is_caret() {
let caret_actual_line =
data.doc.buffer().line_of_offset(region.end());
if caret_actual_line == actual_line {
let size = ctx.size();
ctx.fill(
Rect::ZERO
.with_origin(Point::new(0.0, y))
.with_size(Size::new(size.width, line_height)),
data.config.get_color_unchecked(
LapceTheme::EDITOR_CURRENT_LINE,
),
);
}
} else {
let start = region.start();
let end = region.end();
let (start_line, start_col) =
data.doc.buffer().offset_to_line_col(start.min(end));
let (end_line, end_col) =
data.doc.buffer().offset_to_line_col(start.max(end));
let left_col = match actual_line {
_ if actual_line == start_line => start_col,
_ => 0,
};
let right_col = match actual_line {
_ if actual_line == end_line => {
let max_col = data
.doc
.buffer()
.line_end_col(actual_line, true);
end_col.min(max_col)
}
_ => data.doc.buffer().line_end_col(actual_line, true),
};
let x0 = left_col as f64 * char_width + x_shift;
let x1 = right_col as f64 * char_width + x_shift;
let y0 = y;
let y1 = y0 + line_height;
ctx.fill(
Rect::new(x0, y0, x1, y1),
data.config
.get_color_unchecked(LapceTheme::EDITOR_SELECTION),
);
}
}
for region in regions {
if is_focused {
let (caret_actual_line, col) =
data.doc.buffer().offset_to_line_col(region.end());
if caret_actual_line == actual_line {
let x = col as f64 * char_width + x_shift;
ctx.stroke(
Line::new(
Point::new(x, y),