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Improve widget info output for potential screen readers

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Part of https://github.com/emilk/egui/issues/167
This commit is contained in:
Emil Ernerfeldt
2021-03-08 18:36:32 +01:00
parent 1c06622dbc
commit ea248d66b5
14 changed files with 168 additions and 83 deletions
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13
egui_demo_lib/src/apps/demo/toggle_switch.rs
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@@ -30,11 +30,6 @@ pub fn toggle_ui(ui: &mut egui::Ui, on: &mut bool) -> egui::Response {
// This is where we get a region of the screen assigned.
// We also tell the Ui to sense clicks in the allocated region.
let (rect, mut response) = ui.allocate_exact_size(desired_size, egui::Sense::click());
if response.gained_kb_focus() {
// Inform accessibility systems that the widget is selected:
ui.output()
.push_gained_focus_event(egui::WidgetType::Checkbox, "");
}
// 3. Interact: Time to check for clicks!
if response.clicked() {
@@ -42,6 +37,9 @@ pub fn toggle_ui(ui: &mut egui::Ui, on: &mut bool) -> egui::Response {
response.mark_changed(); // report back that the value changed
}
// Attach some meta-data to the response which can be used by screen readers:
response.widget_info(|| egui::WidgetInfo::selected(egui::WidgetType::Checkbox, *on, ""));
// 4. Paint!
// First let's ask for a simple animation from egui.
// egui keeps track of changes in the boolean associated with the id and
@@ -72,14 +70,11 @@ pub fn toggle_ui(ui: &mut egui::Ui, on: &mut bool) -> egui::Response {
fn toggle_ui_compact(ui: &mut egui::Ui, on: &mut bool) -> egui::Response {
let desired_size = ui.spacing().interact_size.y * egui::vec2(2.0, 1.0);
let (rect, mut response) = ui.allocate_exact_size(desired_size, egui::Sense::click());
if response.gained_kb_focus() {
ui.output()
.push_gained_focus_event(egui::WidgetType::Checkbox, "");
}
if response.clicked() {
*on = !*on;
response.mark_changed();
}
response.widget_info(|| egui::WidgetInfo::selected(egui::WidgetType::Checkbox, *on, ""));
let how_on = ui.ctx().animate_bool(response.id, *on);
let visuals = ui.style().interact_selectable(&response, *on);