migrations/egui
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Merge branch 'master' into cache_galley_lines

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This commit is contained in:
Emil Ernerfeldt
2025-03-30 16:22:59 +02:00
parent e393a38307 e3acd71090
commit 072c8fc8ed
6 changed files with 125 additions and 83 deletions
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2
Cargo.toml
View File

@@ -101,7 +101,7 @@ thiserror = "1.0.37"
type-map = "0.5.0" type-map = "0.5.0"
wasm-bindgen = "0.2" wasm-bindgen = "0.2"
wasm-bindgen-futures = "0.4" wasm-bindgen-futures = "0.4"
web-sys = "0.3.70" web-sys = "0.3.73"
web-time = "1.1.0" # Timekeeping for native and web web-time = "1.1.0" # Timekeeping for native and web
wgpu = { version = "24.0.0", default-features = false } wgpu = { version = "24.0.0", default-features = false }
windows-sys = "0.59" windows-sys = "0.59"

15
crates/eframe/src/epi.rs
View File

@@ -499,10 +499,16 @@ pub struct WebOptions {
/// If the web event corresponding to an egui event should be propagated /// If the web event corresponding to an egui event should be propagated
/// to the rest of the web page. /// to the rest of the web page.
/// ///
/// The default is `false`, meaning /// The default is `true`, meaning
/// [`stopPropagation`](https://developer.mozilla.org/en-US/docs/Web/API/Event/stopPropagation) /// [`stopPropagation`](https://developer.mozilla.org/en-US/docs/Web/API/Event/stopPropagation)
/// is called on every event. /// is called on every event, and the event is not propagated to the rest of the web page.
pub should_propagate_event: Box<dyn Fn(&egui::Event) -> bool>, pub should_stop_propagation: Box<dyn Fn(&egui::Event) -> bool>,
/// Whether the web event corresponding to an egui event should have `prevent_default` called
/// on it or not.
///
/// Defaults to true.
pub should_prevent_default: Box<dyn Fn(&egui::Event) -> bool>,
} }
#[cfg(target_arch = "wasm32")] #[cfg(target_arch = "wasm32")]
@@ -519,7 +525,8 @@ impl Default for WebOptions {
dithering: true, dithering: true,
should_propagate_event: Box::new(|_| false), should_stop_propagation: Box::new(|_| true),
should_prevent_default: Box::new(|_| true),
} }
} }
} }

141
crates/eframe/src/web/events.rs
View File

@@ -139,15 +139,20 @@ fn install_keydown(runner_ref: &WebRunner, target: &EventTarget) -> Result<(), J
{ {
if let Some(text) = text_from_keyboard_event(&event) { if let Some(text) = text_from_keyboard_event(&event) {
let egui_event = egui::Event::Text(text); let egui_event = egui::Event::Text(text);
let should_propagate = (runner.web_options.should_propagate_event)(&egui_event); let should_stop_propagation =
(runner.web_options.should_stop_propagation)(&egui_event);
let should_prevent_default =
(runner.web_options.should_prevent_default)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
runner.needs_repaint.repaint_asap(); runner.needs_repaint.repaint_asap();
// If this is indeed text, then prevent any other action. // If this is indeed text, then prevent any other action.
event.prevent_default(); if should_prevent_default {
event.prevent_default();
}
// Use web options to tell if the event should be propagated to parent elements. // Use web options to tell if the event should be propagated to parent elements.
if !should_propagate { if should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
} }
@@ -184,7 +189,7 @@ pub(crate) fn on_keydown(event: web_sys::KeyboardEvent, runner: &mut AppRunner)
repeat: false, // egui will fill this in for us! repeat: false, // egui will fill this in for us!
modifiers, modifiers,
}; };
let should_propagate = (runner.web_options.should_propagate_event)(&egui_event); let should_stop_propagation = (runner.web_options.should_stop_propagation)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
runner.needs_repaint.repaint_asap(); runner.needs_repaint.repaint_asap();
@@ -201,7 +206,7 @@ pub(crate) fn on_keydown(event: web_sys::KeyboardEvent, runner: &mut AppRunner)
} }
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !should_propagate { if should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
} }
@@ -261,7 +266,7 @@ pub(crate) fn on_keyup(event: web_sys::KeyboardEvent, runner: &mut AppRunner) {
let modifiers = modifiers_from_kb_event(&event); let modifiers = modifiers_from_kb_event(&event);
runner.input.raw.modifiers = modifiers; runner.input.raw.modifiers = modifiers;
let mut propagate_event = false; let mut should_stop_propagation = true;
if let Some(key) = translate_key(&event.key()) { if let Some(key) = translate_key(&event.key()) {
let egui_event = egui::Event::Key { let egui_event = egui::Event::Key {
@@ -271,7 +276,7 @@ pub(crate) fn on_keyup(event: web_sys::KeyboardEvent, runner: &mut AppRunner) {
repeat: false, repeat: false,
modifiers, modifiers,
}; };
propagate_event |= (runner.web_options.should_propagate_event)(&egui_event); should_stop_propagation &= (runner.web_options.should_stop_propagation)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
} }
@@ -290,7 +295,7 @@ pub(crate) fn on_keyup(event: web_sys::KeyboardEvent, runner: &mut AppRunner) {
repeat: false, repeat: false,
modifiers, modifiers,
}; };
propagate_event |= (runner.web_options.should_propagate_event)(&egui_event); should_stop_propagation &= (runner.web_options.should_stop_propagation)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
} }
} }
@@ -299,7 +304,7 @@ pub(crate) fn on_keyup(event: web_sys::KeyboardEvent, runner: &mut AppRunner) {
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
let has_focus = runner.input.raw.focused; let has_focus = runner.input.raw.focused;
if has_focus && !propagate_event { if has_focus && should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
} }
@@ -310,19 +315,26 @@ fn install_copy_cut_paste(runner_ref: &WebRunner, target: &EventTarget) -> Resul
if let Ok(text) = data.get_data("text") { if let Ok(text) = data.get_data("text") {
let text = text.replace("\r\n", "\n"); let text = text.replace("\r\n", "\n");
let mut should_propagate = false; let mut should_stop_propagation = true;
let mut should_prevent_default = true;
if !text.is_empty() && runner.input.raw.focused { if !text.is_empty() && runner.input.raw.focused {
let egui_event = egui::Event::Paste(text); let egui_event = egui::Event::Paste(text);
should_propagate = (runner.web_options.should_propagate_event)(&egui_event); should_stop_propagation =
(runner.web_options.should_stop_propagation)(&egui_event);
should_prevent_default =
(runner.web_options.should_prevent_default)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
runner.needs_repaint.repaint_asap(); runner.needs_repaint.repaint_asap();
} }
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !should_propagate { if should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
event.prevent_default();
if should_prevent_default {
event.prevent_default();
}
} }
} }
})?; })?;
@@ -340,10 +352,13 @@ fn install_copy_cut_paste(runner_ref: &WebRunner, target: &EventTarget) -> Resul
} }
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !(runner.web_options.should_propagate_event)(&egui::Event::Cut) { if (runner.web_options.should_stop_propagation)(&egui::Event::Cut) {
event.stop_propagation(); event.stop_propagation();
} }
event.prevent_default();
if (runner.web_options.should_prevent_default)(&egui::Event::Cut) {
event.prevent_default();
}
})?; })?;
runner_ref.add_event_listener(target, "copy", |event: web_sys::ClipboardEvent, runner| { runner_ref.add_event_listener(target, "copy", |event: web_sys::ClipboardEvent, runner| {
@@ -359,10 +374,13 @@ fn install_copy_cut_paste(runner_ref: &WebRunner, target: &EventTarget) -> Resul
} }
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !(runner.web_options.should_propagate_event)(&egui::Event::Copy) { if (runner.web_options.should_stop_propagation)(&egui::Event::Copy) {
event.stop_propagation(); event.stop_propagation();
} }
event.prevent_default();
if (runner.web_options.should_prevent_default)(&egui::Event::Copy) {
event.prevent_default();
}
})?; })?;
Ok(()) Ok(())
@@ -484,7 +502,7 @@ fn install_pointerdown(runner_ref: &WebRunner, target: &EventTarget) -> Result<(
|event: web_sys::PointerEvent, runner: &mut AppRunner| { |event: web_sys::PointerEvent, runner: &mut AppRunner| {
let modifiers = modifiers_from_mouse_event(&event); let modifiers = modifiers_from_mouse_event(&event);
runner.input.raw.modifiers = modifiers; runner.input.raw.modifiers = modifiers;
let mut should_propagate = false; let mut should_stop_propagation = true;
if let Some(button) = button_from_mouse_event(&event) { if let Some(button) = button_from_mouse_event(&event) {
let pos = pos_from_mouse_event(runner.canvas(), &event, runner.egui_ctx()); let pos = pos_from_mouse_event(runner.canvas(), &event, runner.egui_ctx());
let modifiers = runner.input.raw.modifiers; let modifiers = runner.input.raw.modifiers;
@@ -494,7 +512,7 @@ fn install_pointerdown(runner_ref: &WebRunner, target: &EventTarget) -> Result<(
pressed: true, pressed: true,
modifiers, modifiers,
}; };
should_propagate = (runner.web_options.should_propagate_event)(&egui_event); should_stop_propagation = (runner.web_options.should_stop_propagation)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
// In Safari we are only allowed to write to the clipboard during the // In Safari we are only allowed to write to the clipboard during the
@@ -506,7 +524,7 @@ fn install_pointerdown(runner_ref: &WebRunner, target: &EventTarget) -> Result<(
} }
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !should_propagate { if should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
// Note: prevent_default breaks VSCode tab focusing, hence why we don't call it here. // Note: prevent_default breaks VSCode tab focusing, hence why we don't call it here.
@@ -536,7 +554,10 @@ fn install_pointerup(runner_ref: &WebRunner, target: &EventTarget) -> Result<(),
pressed: false, pressed: false,
modifiers, modifiers,
}; };
let should_propagate = (runner.web_options.should_propagate_event)(&egui_event); let should_stop_propagation =
(runner.web_options.should_stop_propagation)(&egui_event);
let should_prevent_default =
(runner.web_options.should_prevent_default)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
// Previously on iOS, the canvas would not receive focus on // Previously on iOS, the canvas would not receive focus on
@@ -555,10 +576,12 @@ fn install_pointerup(runner_ref: &WebRunner, target: &EventTarget) -> Result<(),
// Make sure we paint the output of the above logic call asap: // Make sure we paint the output of the above logic call asap:
runner.needs_repaint.repaint_asap(); runner.needs_repaint.repaint_asap();
event.prevent_default(); if should_prevent_default {
event.prevent_default();
}
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !should_propagate { if should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
} }
@@ -600,15 +623,19 @@ fn install_mousemove(runner_ref: &WebRunner, target: &EventTarget) -> Result<(),
egui::pos2(event.client_x() as f32, event.client_y() as f32), egui::pos2(event.client_x() as f32, event.client_y() as f32),
) { ) {
let egui_event = egui::Event::PointerMoved(pos); let egui_event = egui::Event::PointerMoved(pos);
let should_propagate = (runner.web_options.should_propagate_event)(&egui_event); let should_stop_propagation = (runner.web_options.should_stop_propagation)(&egui_event);
let should_prevent_default = (runner.web_options.should_prevent_default)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
runner.needs_repaint.repaint_asap(); runner.needs_repaint.repaint_asap();
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !should_propagate { if should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
event.prevent_default();
if should_prevent_default {
event.prevent_default();
}
} }
}) })
} }
@@ -622,10 +649,13 @@ fn install_mouseleave(runner_ref: &WebRunner, target: &EventTarget) -> Result<()
runner.needs_repaint.repaint_asap(); runner.needs_repaint.repaint_asap();
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !(runner.web_options.should_propagate_event)(&egui::Event::PointerGone) { if (runner.web_options.should_stop_propagation)(&egui::Event::PointerGone) {
event.stop_propagation(); event.stop_propagation();
} }
event.prevent_default();
if (runner.web_options.should_prevent_default)(&egui::Event::PointerGone) {
event.prevent_default();
}
}, },
) )
} }
@@ -635,7 +665,8 @@ fn install_touchstart(runner_ref: &WebRunner, target: &EventTarget) -> Result<()
target, target,
"touchstart", "touchstart",
|event: web_sys::TouchEvent, runner| { |event: web_sys::TouchEvent, runner| {
let mut should_propagate = false; let mut should_stop_propagation = true;
let mut should_prevent_default = true;
if let Some((pos, _)) = primary_touch_pos(runner, &event) { if let Some((pos, _)) = primary_touch_pos(runner, &event) {
let egui_event = egui::Event::PointerButton { let egui_event = egui::Event::PointerButton {
pos, pos,
@@ -643,7 +674,8 @@ fn install_touchstart(runner_ref: &WebRunner, target: &EventTarget) -> Result<()
pressed: true, pressed: true,
modifiers: runner.input.raw.modifiers, modifiers: runner.input.raw.modifiers,
}; };
should_propagate = (runner.web_options.should_propagate_event)(&egui_event); should_stop_propagation = (runner.web_options.should_stop_propagation)(&egui_event);
should_prevent_default = (runner.web_options.should_prevent_default)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
} }
@@ -651,10 +683,13 @@ fn install_touchstart(runner_ref: &WebRunner, target: &EventTarget) -> Result<()
runner.needs_repaint.repaint_asap(); runner.needs_repaint.repaint_asap();
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !should_propagate { if should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
event.prevent_default();
if should_prevent_default {
event.prevent_default();
}
}, },
) )
} }
@@ -667,17 +702,23 @@ fn install_touchmove(runner_ref: &WebRunner, target: &EventTarget) -> Result<(),
egui::pos2(touch.client_x() as f32, touch.client_y() as f32), egui::pos2(touch.client_x() as f32, touch.client_y() as f32),
) { ) {
let egui_event = egui::Event::PointerMoved(pos); let egui_event = egui::Event::PointerMoved(pos);
let should_propagate = (runner.web_options.should_propagate_event)(&egui_event); let should_stop_propagation =
(runner.web_options.should_stop_propagation)(&egui_event);
let should_prevent_default =
(runner.web_options.should_prevent_default)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
push_touches(runner, egui::TouchPhase::Move, &event); push_touches(runner, egui::TouchPhase::Move, &event);
runner.needs_repaint.repaint_asap(); runner.needs_repaint.repaint_asap();
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !should_propagate { if should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
event.prevent_default();
if should_prevent_default {
event.prevent_default();
}
} }
} }
}) })
@@ -691,18 +732,23 @@ fn install_touchend(runner_ref: &WebRunner, target: &EventTarget) -> Result<(),
egui::pos2(touch.client_x() as f32, touch.client_y() as f32), egui::pos2(touch.client_x() as f32, touch.client_y() as f32),
) { ) {
// First release mouse to click: // First release mouse to click:
let mut should_propagate = false; let mut should_stop_propagation = true;
let mut should_prevent_default = true;
let egui_event = egui::Event::PointerButton { let egui_event = egui::Event::PointerButton {
pos, pos,
button: egui::PointerButton::Primary, button: egui::PointerButton::Primary,
pressed: false, pressed: false,
modifiers: runner.input.raw.modifiers, modifiers: runner.input.raw.modifiers,
}; };
should_propagate |= (runner.web_options.should_propagate_event)(&egui_event); should_stop_propagation &=
(runner.web_options.should_stop_propagation)(&egui_event);
should_prevent_default &= (runner.web_options.should_prevent_default)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
// Then remove hover effect: // Then remove hover effect:
should_propagate |= should_stop_propagation &=
(runner.web_options.should_propagate_event)(&egui::Event::PointerGone); (runner.web_options.should_stop_propagation)(&egui::Event::PointerGone);
should_prevent_default &=
(runner.web_options.should_prevent_default)(&egui::Event::PointerGone);
runner.input.raw.events.push(egui::Event::PointerGone); runner.input.raw.events.push(egui::Event::PointerGone);
push_touches(runner, egui::TouchPhase::End, &event); push_touches(runner, egui::TouchPhase::End, &event);
@@ -710,10 +756,13 @@ fn install_touchend(runner_ref: &WebRunner, target: &EventTarget) -> Result<(),
runner.needs_repaint.repaint_asap(); runner.needs_repaint.repaint_asap();
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !should_propagate { if should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
event.prevent_default();
if should_prevent_default {
event.prevent_default();
}
// Fix virtual keyboard IOS // Fix virtual keyboard IOS
// Need call focus at the same time of event // Need call focus at the same time of event
@@ -769,16 +818,20 @@ fn install_wheel(runner_ref: &WebRunner, target: &EventTarget) -> Result<(), JsV
modifiers, modifiers,
} }
}; };
let should_propagate = (runner.web_options.should_propagate_event)(&egui_event); let should_stop_propagation = (runner.web_options.should_stop_propagation)(&egui_event);
let should_prevent_default = (runner.web_options.should_prevent_default)(&egui_event);
runner.input.raw.events.push(egui_event); runner.input.raw.events.push(egui_event);
runner.needs_repaint.repaint_asap(); runner.needs_repaint.repaint_asap();
// Use web options to tell if the web event should be propagated to parent elements based on the egui event. // Use web options to tell if the web event should be propagated to parent elements based on the egui event.
if !should_propagate { if should_stop_propagation {
event.stop_propagation(); event.stop_propagation();
} }
event.prevent_default();
if should_prevent_default {
event.prevent_default();
}
}) })
} }

2
crates/egui_demo_lib/tests/snapshots/rendering_test/dpi_1.50.png
View File

@@ -1,3 +1,3 @@
version https://git-lfs.github.com/spec/v1 version https://git-lfs.github.com/spec/v1
oid sha256:e6f394c2beb51d95edaf8c7ddc9ff62d3f95913ea88a3840245b6bacf8b850cc oid sha256:334f52bfee27f9c467de739696fd7ce7c48ec9013e315dc4b2e61eee58f11287
size 907997 size 907997

41
crates/epaint/src/text/text_layout.rs
View File

@@ -743,7 +743,7 @@ fn tessellate_row(
mesh.reserve_vertices(row.glyphs.len() * 4); mesh.reserve_vertices(row.glyphs.len() * 4);
if format_summary.any_background { if format_summary.any_background {
add_row_backgrounds(job, row, &mut mesh); add_row_backgrounds(point_scale, job, row, &mut mesh);
} }
let glyph_index_start = mesh.indices.len(); let glyph_index_start = mesh.indices.len();
@@ -781,7 +781,7 @@ fn tessellate_row(
/// Create background for glyphs that have them. /// Create background for glyphs that have them.
/// Creates as few rectangular regions as possible. /// Creates as few rectangular regions as possible.
fn add_row_backgrounds(job: &LayoutJob, row: &Row, mesh: &mut Mesh) { fn add_row_backgrounds(point_scale: PointScale, job: &LayoutJob, row: &Row, mesh: &mut Mesh) {
if row.glyphs.is_empty() { if row.glyphs.is_empty() {
return; return;
} }
@@ -790,6 +790,7 @@ fn add_row_backgrounds(job: &LayoutJob, row: &Row, mesh: &mut Mesh) {
if let Some((color, start_rect, expand)) = start { if let Some((color, start_rect, expand)) = start {
let rect = Rect::from_min_max(start_rect.left_top(), pos2(stop_x, start_rect.bottom())); let rect = Rect::from_min_max(start_rect.left_top(), pos2(stop_x, start_rect.bottom()));
let rect = rect.expand(expand); let rect = rect.expand(expand);
let rect = rect.round_to_pixels(point_scale.pixels_per_point());
mesh.add_colored_rect(rect, color); mesh.add_colored_rect(rect, color);
} }
}; };
@@ -884,9 +885,15 @@ fn add_row_hline(
mesh: &mut Mesh, mesh: &mut Mesh,
stroke_and_y: impl Fn(&Glyph) -> (Stroke, f32), stroke_and_y: impl Fn(&Glyph) -> (Stroke, f32),
) { ) {
let mut path = crate::tessellator::Path::default(); // reusing path to avoid re-allocations.
let mut end_line = |start: Option<(Stroke, Pos2)>, stop_x: f32| { let mut end_line = |start: Option<(Stroke, Pos2)>, stop_x: f32| {
if let Some((stroke, start)) = start { if let Some((stroke, start)) = start {
add_hline(point_scale, [start, pos2(stop_x, start.y)], stroke, mesh); let stop = pos2(stop_x, start.y);
path.clear();
path.add_line_segment([start, stop]);
let feathering = 1.0 / point_scale.pixels_per_point();
path.stroke_open(feathering, &PathStroke::from(stroke), mesh);
} }
}; };
@@ -916,34 +923,6 @@ fn add_row_hline(
end_line(line_start.take(), last_right_x); end_line(line_start.take(), last_right_x);
} }
fn add_hline(point_scale: PointScale, [start, stop]: [Pos2; 2], stroke: Stroke, mesh: &mut Mesh) {
let antialiased = true;
if antialiased {
let mut path = crate::tessellator::Path::default(); // TODO(emilk): reuse this to avoid re-allocations.
path.add_line_segment([start, stop]);
let feathering = 1.0 / point_scale.pixels_per_point();
path.stroke_open(feathering, &PathStroke::from(stroke), mesh);
} else {
// Thin lines often lost, so this is a bad idea
assert_eq!(
start.y, stop.y,
"Horizontal line must be horizontal, but got: {start:?} -> {stop:?}"
);
let min_y = point_scale.round_to_pixel(start.y - 0.5 * stroke.width);
let max_y = point_scale.round_to_pixel(min_y + stroke.width);
let rect = Rect::from_min_max(
pos2(point_scale.round_to_pixel(start.x), min_y),
pos2(point_scale.round_to_pixel(stop.x), max_y),
);
mesh.add_colored_rect(rect, stroke.color);
}
}
// ---------------------------------------------------------------------------- // ----------------------------------------------------------------------------
/// Keeps track of good places to break a long row of text. /// Keeps track of good places to break a long row of text.

7
crates/epaint/src/text/text_layout_types.rs
View File

@@ -823,13 +823,16 @@ impl Galley {
/// same as a cursor at the end. /// same as a cursor at the end.
/// This allows implementing text-selection by dragging above/below the galley. /// This allows implementing text-selection by dragging above/below the galley.
pub fn cursor_from_pos(&self, pos: Vec2) -> CCursor { pub fn cursor_from_pos(&self, pos: Vec2) -> CCursor {
// Vertical margin around galley improves text selection UX
const VMARGIN: f32 = 5.0;
if let Some(first_row) = self.rows.first() { if let Some(first_row) = self.rows.first() {
if pos.y < first_row.min_y() { if pos.y < first_row.min_y() - VMARGIN {
return self.begin(); return self.begin();
} }
} }
if let Some(last_row) = self.rows.last() { if let Some(last_row) = self.rows.last() {
if last_row.max_y() < pos.y { if last_row.max_y() + VMARGIN < pos.y {
return self.end(); return self.end();
} }
} }