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Add #[must_use] to all widgets

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This commit is contained in:
Emil Ernerfeldt 2020-12-19 15:02:02 +01:00
parent 99808d2df8
commit dd2f50e8ed
3 changed files with 9 additions and 0 deletions
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1
egui/src/widgets/button.rs
View file

@ -1,5 +1,6 @@
use crate::*;
#[must_use = "You should put this widget in an ui with `ui.add(widget);`"]
#[derive(Clone, Debug)]
pub struct ImageButton {
image: widgets::Image,

1
egui/src/widgets/image.rs
View file

@ -1,5 +1,6 @@
use crate::*;
#[must_use = "You should put this widget in an ui with `ui.add(widget);`"]
#[derive(Clone, Copy, Debug)]
pub struct Image {
texture_id: TextureId,

7
egui/src/widgets/mod.rs
View file

@ -22,6 +22,7 @@ use paint::*;
// ----------------------------------------------------------------------------
/// Anything implementing Widget can be added to a Ui with `Ui::add`
#[must_use = "You should put this widget in an ui with `ui.add(widget);`"]
pub trait Widget {
fn ui(self, ui: &mut Ui) -> Response;
}
@ -29,6 +30,7 @@ pub trait Widget {
// ----------------------------------------------------------------------------
/// Static text.
#[must_use = "You should put this widget in an ui with `ui.add(widget);`"]
pub struct Label {
// TODO: not pub
pub(crate) text: String,
@ -213,6 +215,7 @@ impl Into<Label> for String {
// ----------------------------------------------------------------------------
/// A clickable hyperlink, e.g. to `"https://github.com/emilk/egui"`.
#[must_use = "You should put this widget in an ui with `ui.add(widget);`"]
pub struct Hyperlink {
// TODO: wrap Label
url: String,
@ -296,6 +299,7 @@ impl Widget for Hyperlink {
// ----------------------------------------------------------------------------
/// Clickable button with text
#[must_use = "You should put this widget in an ui with `ui.add(widget);`"]
pub struct Button {
text: String,
text_color: Option<Srgba>,
@ -532,6 +536,7 @@ impl<'a> Widget for Checkbox<'a> {
// ----------------------------------------------------------------------------
/// One out of several alternatives, either selected or not.
#[must_use = "You should put this widget in an ui with `ui.add(widget);`"]
#[derive(Debug)]
pub struct RadioButton {
checked: bool,
@ -628,6 +633,7 @@ impl Widget for RadioButton {
/// One out of several alternatives, either selected or not.
/// Will mark selected items with a different background color
/// An alternative to `RadioButton` and `Checkbox`.
#[must_use = "You should put this widget in an ui with `ui.add(widget);`"]
#[derive(Debug)]
pub struct SelectableLabel {
selected: bool,
@ -693,6 +699,7 @@ impl Widget for SelectableLabel {
// ----------------------------------------------------------------------------
/// A visual separator. A horizontal or vertical line (depending on `Layout`).
#[must_use = "You should put this widget in an ui with `ui.add(widget);`"]
pub struct Separator {
spacing: f32,
}