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Galley: Return Rect when asking for cursor position

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This commit is contained in:
Emil Ernerfeldt 2020-11-14 23:07:16 +01:00
parent 220f48a159
commit 96befb0736
2 changed files with 19 additions and 13 deletions
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26
egui/src/paint/galley.rs
View file

@ -16,7 +16,7 @@
//! and the start of the second row.
//! The `prefer_next_row` selects which.
use crate::math::{vec2, NumExt, Vec2};
use crate::math::{pos2, NumExt, Rect, Vec2};
/// Character cursor
#[derive(Clone, Copy, Debug, Default)]
@ -224,15 +224,18 @@ impl Galley {
/// ## Physical positions
impl Galley {
pub fn last_pos(&self) -> Vec2 {
if let Some(last) = self.rows.last() {
vec2(last.max_x(), last.y_min)
fn last_pos(&self) -> Rect {
if let Some(row) = self.rows.last() {
let x = row.max_x();
return Rect::from_min_max(pos2(x, row.y_min), pos2(x, row.y_max));
} else {
vec2(0.0, 0.0) // Empty galley
// Empty galley
Rect::from_min_max(pos2(0.0, 0.0), pos2(0.0, 0.0))
}
}
pub fn pos_from_pcursor(&self, pcursor: PCursor) -> Vec2 {
/// Returns a 0-width Rect.
pub fn pos_from_pcursor(&self, pcursor: PCursor) -> Rect {
let mut it = PCursor::default();
for row in &self.rows {
@ -250,7 +253,8 @@ impl Galley {
&& !row.ends_with_newline
&& column >= row.char_count_excluding_newline();
if !select_next_row_instead {
return vec2(row.x_offsets[column], row.y_min);
let x = row.x_offsets[column];
return Rect::from_min_max(pos2(x, row.y_min), pos2(x, row.y_max));
}
}
}
@ -266,8 +270,8 @@ impl Galley {
self.last_pos()
}
pub fn pos_from_cursor(&self, cursor: &Cursor) -> Vec2 {
// self.pos_from_rcursor(cursor.rcursor)
/// Returns a 0-width Rect.
pub fn pos_from_cursor(&self, cursor: &Cursor) -> Rect {
self.pos_from_pcursor(cursor.pcursor) // The one TextEdit stores
}
@ -558,7 +562,7 @@ impl Galley {
}
} else {
// keep same X coord
let x = self.pos_from_cursor(cursor).x;
let x = self.pos_from_cursor(cursor).center().x;
let column = if x > self.rows[new_row].max_x() {
// beyond the end of this row - keep same colum
cursor.rcursor.column
@ -589,7 +593,7 @@ impl Galley {
}
} else {
// keep same X coord
let x = self.pos_from_cursor(cursor).x;
let x = self.pos_from_cursor(cursor).center().x;
let column = if x > self.rows[new_row].max_x() {
// beyond the end of the next row - keep same column
cursor.rcursor.column

6
egui/src/widgets/text_edit.rs
View file

@ -288,9 +288,11 @@ impl<'t> Widget for TextEdit<'t> {
if ui.memory().has_kb_focus(id) {
if let Some(pcursor) = state.pcursor {
let cursor_pos = response.rect.min + galley.pos_from_pcursor(pcursor);
let cursor_pos = galley
.pos_from_pcursor(pcursor)
.translate(response.rect.min.to_vec2());
painter.line_segment(
[cursor_pos, cursor_pos + vec2(0.0, line_spacing)],
[cursor_pos.center_top(), cursor_pos.center_bottom()],
(ui.style().visuals.text_cursor_width, color::WHITE),
);
}