freya_core/elements/
extensions.rs

1use std::{
2    borrow::Cow,
3    hash::{
4        Hash,
5        Hasher,
6    },
7};
8
9use paste::paste;
10use rustc_hash::{
11    FxHashMap,
12    FxHasher,
13};
14use torin::{
15    content::Content,
16    gaps::Gaps,
17    prelude::{
18        Alignment,
19        Direction,
20        Length,
21        Position,
22        VisibleSize,
23    },
24    size::Size,
25};
26
27use crate::{
28    data::{
29        AccessibilityData,
30        EffectData,
31        LayoutData,
32        Overflow,
33        TextStyleData,
34    },
35    diff_key::DiffKey,
36    element::{
37        Element,
38        EventHandlerType,
39    },
40    elements::image::{
41        AspectRatio,
42        ImageCover,
43        ImageData,
44        SamplingMode,
45    },
46    event_handler::EventHandler,
47    events::{
48        data::{
49            Event,
50            KeyboardEventData,
51            MouseEventData,
52            SizedEventData,
53            WheelEventData,
54        },
55        name::EventName,
56    },
57    layers::Layer,
58    prelude::*,
59    style::{
60        font_size::FontSize,
61        font_slant::FontSlant,
62        font_weight::FontWeight,
63        font_width::FontWidth,
64        scale::Scale,
65        text_height::TextHeightBehavior,
66        text_overflow::TextOverflow,
67        text_shadow::TextShadow,
68    },
69};
70
71/// Trait for composing child elements.
72pub trait ChildrenExt: Sized {
73    /// Returns a mutable reference to the internal children vector.
74    ///
75    /// # Example
76    /// ```ignore
77    /// impl ChildrenExt for MyElement {
78    ///     fn get_children(&mut self) -> &mut Vec<Element> {
79    ///         &mut self.elements
80    ///     }
81    /// }
82    /// ```
83    fn get_children(&mut self) -> &mut Vec<Element>;
84
85    /// Extends the children with an iterable of [`Element`]s.
86    ///
87    /// # Example
88    /// ```ignore
89    /// rect().children(["Hello", "World"].map(|t| label().text(t).into_element()))
90    /// ```
91    fn children(mut self, children: impl IntoIterator<Item = Element>) -> Self {
92        self.get_children().extend(children);
93        self
94    }
95
96    /// Appends a child only when the [`Option`] is [`Some`].
97    ///
98    /// # Example
99    /// ```ignore
100    /// rect().maybe_child(show_badge.then(|| label().text("New")))
101    /// ```
102    fn maybe_child<C: IntoElement>(mut self, child: Option<C>) -> Self {
103        if let Some(child) = child {
104            self.get_children().push(child.into_element());
105        }
106        self
107    }
108
109    /// Appends a single child element.
110    ///
111    /// # Example
112    /// ```ignore
113    /// rect().child(label().text("Hello"))
114    /// ```
115    fn child<C: IntoElement>(mut self, child: C) -> Self {
116        self.get_children().push(child.into_element());
117        self
118    }
119}
120
121pub trait KeyExt: Sized {
122    fn write_key(&mut self) -> &mut DiffKey;
123
124    fn key(mut self, key: impl Hash) -> Self {
125        let mut hasher = FxHasher::default();
126        key.hash(&mut hasher);
127        *self.write_key() = DiffKey::U64(hasher.finish());
128        self
129    }
130}
131
132pub trait ListExt {
133    fn with(self, other: Self) -> Self;
134}
135
136impl<T> ListExt for Vec<T> {
137    fn with(mut self, other: Self) -> Self {
138        self.extend(other);
139        self
140    }
141}
142
143macro_rules! event_handlers {
144    (
145        $handler_variant:ident, $event_data:ty;
146        $(
147            $name:ident => $event_variant:expr ;
148        )*
149    ) => {
150        paste! {
151            $(
152                fn [<on_$name>](mut self, [<on_$name>]: impl Into<EventHandler<Event<$event_data>>>) -> Self {
153                    self.get_event_handlers()
154                        .insert($event_variant, EventHandlerType::$handler_variant([<on_$name>].into()));
155                    self
156                }
157            )*
158        }
159    };
160}
161
162pub trait EventHandlersExt: Sized {
163    fn get_event_handlers(&mut self) -> &mut FxHashMap<EventName, EventHandlerType>;
164
165    fn with_event_handlers(
166        mut self,
167        event_handlers: FxHashMap<EventName, EventHandlerType>,
168    ) -> Self {
169        *self.get_event_handlers() = event_handlers;
170        self
171    }
172
173    event_handlers! {
174        Mouse,
175        MouseEventData;
176
177        mouse_down => EventName::MouseDown;
178        mouse_up => EventName::MouseUp;
179        mouse_move => EventName::MouseMove;
180
181    }
182
183    event_handlers! {
184        Pointer,
185        PointerEventData;
186
187        global_pointer_press => EventName::GlobalPointerPress;
188        global_pointer_down => EventName::GlobalPointerDown;
189        global_pointer_move => EventName::GlobalPointerMove;
190
191        capture_global_pointer_move => EventName::CaptureGlobalPointerMove;
192        capture_global_pointer_press => EventName::CaptureGlobalPointerPress;
193    }
194
195    event_handlers! {
196        Keyboard,
197        KeyboardEventData;
198
199        key_down => EventName::KeyDown;
200        key_up => EventName::KeyUp;
201
202        global_key_down => EventName::GlobalKeyDown;
203        global_key_up => EventName::GlobalKeyUp;
204    }
205
206    event_handlers! {
207        Wheel,
208        WheelEventData;
209
210        wheel => EventName::Wheel;
211    }
212
213    event_handlers! {
214        Touch,
215        TouchEventData;
216
217        touch_cancel => EventName::TouchCancel;
218        touch_start => EventName::TouchStart;
219        touch_move => EventName::TouchMove;
220        touch_end => EventName::TouchEnd;
221    }
222
223    event_handlers! {
224        Pointer,
225        PointerEventData;
226
227        pointer_press => EventName::PointerPress;
228        pointer_down => EventName::PointerDown;
229        pointer_enter => EventName::PointerEnter;
230        pointer_leave => EventName::PointerLeave;
231    }
232
233    event_handlers! {
234        File,
235        FileEventData;
236
237        file_drop => EventName::FileDrop;
238        global_file_hover => EventName::GlobalFileHover;
239        global_file_hover_cancelled => EventName::GlobalFileHoverCancelled;
240    }
241
242    event_handlers! {
243        ImePreedit,
244        ImePreeditEventData;
245
246        ime_preedit => EventName::ImePreedit;
247    }
248
249    fn on_sized(mut self, on_sized: impl Into<EventHandler<Event<SizedEventData>>>) -> Self
250    where
251        Self: LayoutExt,
252    {
253        self.get_event_handlers()
254            .insert(EventName::Sized, EventHandlerType::Sized(on_sized.into()));
255        self.get_layout().layout.has_layout_references = true;
256        self
257    }
258
259    /// This is generally the best event in which to run "press" logic, this might be called `onClick`, `onActivate`, or `onConnect` in other platforms.
260    ///
261    /// Gets triggered when:
262    /// - **Click**: There is a `MouseUp` event (Left button) with the in the same element that there had been a `MouseDown` just before
263    /// - **Touched**: There is a `TouchEnd` event in the same element that there had been a `TouchStart` just before
264    /// - **Activated**: The element is focused and there is a keydown event pressing the OS activation key (e.g Space, Enter)
265    fn on_press(self, on_press: impl Into<EventHandler<Event<PressEventData>>>) -> Self {
266        let on_press = on_press.into();
267        self.on_pointer_press({
268            let on_press = on_press.clone();
269            move |e: Event<PointerEventData>| {
270                let event = e.try_map(|d| match d {
271                    PointerEventData::Mouse(m) if m.button == Some(MouseButton::Left) => {
272                        Some(PressEventData::Mouse(m))
273                    }
274                    PointerEventData::Touch(t) => Some(PressEventData::Touch(t)),
275                    _ => None,
276                });
277                if let Some(event) = event {
278                    on_press.call(event);
279                }
280            }
281        })
282        .on_key_down({
283            let on_press = on_press.clone();
284            move |e: Event<KeyboardEventData>| {
285                if Focus::is_pressed(&e) {
286                    on_press.call(e.map(PressEventData::Keyboard))
287                }
288            }
289        })
290    }
291
292    /// Also called the context menu click in other platforms.
293    /// Gets triggered when:
294    /// - **Click**: There is a `MouseUp` (Right button) event in the same element that there had been a `MouseDown` just before
295    fn on_secondary_press(
296        self,
297        on_pointer_press: impl Into<EventHandler<Event<PressEventData>>>,
298    ) -> Self {
299        let on_pointer_press = on_pointer_press.into();
300        self.on_pointer_press({
301            let on_pointer_press = on_pointer_press.clone();
302            move |e: Event<PointerEventData>| {
303                let event = e.try_map(|d| match d {
304                    PointerEventData::Mouse(m) if m.button == Some(MouseButton::Right) => {
305                        Some(PressEventData::Mouse(m))
306                    }
307                    _ => None,
308                });
309                if let Some(event) = event {
310                    on_pointer_press.call(event);
311                }
312            }
313        })
314    }
315
316    /// Gets triggered when:
317    /// - **Click**: There is a `MouseUp` event (Any button) with the in the same element that there had been a `MouseDown` just before
318    /// - **Touched**: There is a `TouchEnd` event in the same element that there had been a `TouchStart` just before
319    /// - **Activated**: The element is focused and there is a keydown event pressing the OS activation key (e.g Space, Enter)
320    fn on_all_press(self, on_press: impl Into<EventHandler<Event<PressEventData>>>) -> Self {
321        let on_press = on_press.into();
322        self.on_pointer_press({
323            let on_press = on_press.clone();
324            move |e: Event<PointerEventData>| {
325                let event = e.try_map(|d| match d {
326                    PointerEventData::Mouse(m) => Some(PressEventData::Mouse(m)),
327                    PointerEventData::Touch(t) => Some(PressEventData::Touch(t)),
328                });
329                if let Some(event) = event {
330                    on_press.call(event);
331                }
332            }
333        })
334        .on_key_down({
335            let on_press = on_press.clone();
336            move |e: Event<KeyboardEventData>| {
337                if Focus::is_pressed(&e) {
338                    on_press.call(e.map(PressEventData::Keyboard))
339                }
340            }
341        })
342    }
343}
344
345#[derive(Debug, Clone, PartialEq)]
346pub enum PressEventData {
347    Mouse(MouseEventData),
348    Keyboard(KeyboardEventData),
349    Touch(TouchEventData),
350}
351
352pub trait ContainerWithContentExt
353where
354    Self: LayoutExt,
355{
356    fn direction(mut self, direction: Direction) -> Self {
357        self.get_layout().layout.direction = direction;
358        self
359    }
360    fn main_align(mut self, main_align: Alignment) -> Self {
361        self.get_layout().layout.main_alignment = main_align;
362        self
363    }
364
365    fn cross_align(mut self, cross_align: Alignment) -> Self {
366        self.get_layout().layout.cross_alignment = cross_align;
367        self
368    }
369
370    fn spacing(mut self, spacing: impl Into<f32>) -> Self {
371        self.get_layout().layout.spacing = Length::new(spacing.into());
372        self
373    }
374
375    fn content(mut self, content: Content) -> Self {
376        self.get_layout().layout.content = content;
377        self
378    }
379    fn center(mut self) -> Self {
380        self.get_layout().layout.main_alignment = Alignment::Center;
381        self.get_layout().layout.cross_alignment = Alignment::Center;
382
383        self
384    }
385
386    fn offset_x(mut self, offset_x: impl Into<f32>) -> Self {
387        self.get_layout().layout.offset_x = Length::new(offset_x.into());
388        self
389    }
390
391    fn offset_y(mut self, offset_y: impl Into<f32>) -> Self {
392        self.get_layout().layout.offset_y = Length::new(offset_y.into());
393        self
394    }
395
396    fn vertical(mut self) -> Self {
397        self.get_layout().layout.direction = Direction::vertical();
398        self
399    }
400
401    fn horizontal(mut self) -> Self {
402        self.get_layout().layout.direction = Direction::horizontal();
403        self
404    }
405}
406
407pub trait ContainerSizeExt
408where
409    Self: LayoutExt,
410{
411    fn width(mut self, width: impl Into<Size>) -> Self {
412        self.get_layout().layout.width = width.into();
413        self
414    }
415
416    fn height(mut self, height: impl Into<Size>) -> Self {
417        self.get_layout().layout.height = height.into();
418        self
419    }
420
421    /// Expand both `width` and `height` using [Size::fill()].
422    fn expanded(mut self) -> Self {
423        self.get_layout().layout.width = Size::fill();
424        self.get_layout().layout.height = Size::fill();
425        self
426    }
427}
428
429impl<T: ContainerExt> ContainerSizeExt for T {}
430
431pub trait ContainerExt
432where
433    Self: LayoutExt,
434{
435    fn position(mut self, position: impl Into<Position>) -> Self {
436        self.get_layout().layout.position = position.into();
437        self
438    }
439
440    fn padding(mut self, padding: impl Into<Gaps>) -> Self {
441        self.get_layout().layout.padding = padding.into();
442        self
443    }
444
445    fn margin(mut self, margin: impl Into<Gaps>) -> Self {
446        self.get_layout().layout.margin = margin.into();
447        self
448    }
449
450    fn min_width(mut self, minimum_width: impl Into<Size>) -> Self {
451        self.get_layout().layout.minimum_width = minimum_width.into();
452        self
453    }
454
455    fn min_height(mut self, minimum_height: impl Into<Size>) -> Self {
456        self.get_layout().layout.minimum_height = minimum_height.into();
457        self
458    }
459
460    fn max_width(mut self, maximum_width: impl Into<Size>) -> Self {
461        self.get_layout().layout.maximum_width = maximum_width.into();
462        self
463    }
464
465    fn max_height(mut self, maximum_height: impl Into<Size>) -> Self {
466        self.get_layout().layout.maximum_height = maximum_height.into();
467        self
468    }
469
470    fn visible_width(mut self, visible_width: impl Into<VisibleSize>) -> Self {
471        self.get_layout().layout.visible_width = visible_width.into();
472        self
473    }
474
475    fn visible_height(mut self, visible_height: impl Into<VisibleSize>) -> Self {
476        self.get_layout().layout.visible_height = visible_height.into();
477        self
478    }
479}
480
481pub trait LayoutExt
482where
483    Self: Sized,
484{
485    fn get_layout(&mut self) -> &mut LayoutData;
486
487    fn layout(mut self, layout: LayoutData) -> Self {
488        *self.get_layout() = layout;
489        self
490    }
491}
492
493pub trait ImageExt
494where
495    Self: LayoutExt,
496{
497    fn get_image_data(&mut self) -> &mut ImageData;
498
499    fn image_data(mut self, image_data: ImageData) -> Self {
500        *self.get_image_data() = image_data;
501        self
502    }
503
504    fn sampling_mode(mut self, sampling_mode: SamplingMode) -> Self {
505        self.get_image_data().sampling_mode = sampling_mode;
506        self
507    }
508
509    fn aspect_ratio(mut self, aspect_ratio: AspectRatio) -> Self {
510        self.get_image_data().aspect_ratio = aspect_ratio;
511        self
512    }
513
514    fn image_cover(mut self, image_cover: ImageCover) -> Self {
515        self.get_image_data().image_cover = image_cover;
516        self
517    }
518}
519
520pub trait AccessibilityExt: Sized {
521    fn get_accessibility_data(&mut self) -> &mut AccessibilityData;
522
523    fn accessibility(mut self, accessibility: AccessibilityData) -> Self {
524        *self.get_accessibility_data() = accessibility;
525        self
526    }
527
528    fn a11y_id(mut self, a11y_id: impl Into<Option<AccessibilityId>>) -> Self {
529        self.get_accessibility_data().a11y_id = a11y_id.into();
530        self
531    }
532
533    fn a11y_focusable(mut self, a11y_focusable: impl Into<Focusable>) -> Self {
534        self.get_accessibility_data().a11y_focusable = a11y_focusable.into();
535        self
536    }
537
538    fn a11y_auto_focus(mut self, a11y_auto_focus: impl Into<bool>) -> Self {
539        self.get_accessibility_data().a11y_auto_focus = a11y_auto_focus.into();
540        self
541    }
542
543    fn a11y_member_of(mut self, a11y_member_of: impl Into<AccessibilityId>) -> Self {
544        self.get_accessibility_data()
545            .builder
546            .set_member_of(a11y_member_of.into());
547        self
548    }
549
550    fn a11y_role(mut self, a11y_role: impl Into<AccessibilityRole>) -> Self {
551        self.get_accessibility_data()
552            .builder
553            .set_role(a11y_role.into());
554        self
555    }
556
557    fn a11y_alt(mut self, value: impl Into<Box<str>>) -> Self {
558        self.get_accessibility_data().builder.set_label(value);
559        self
560    }
561
562    fn a11y_builder(mut self, with: impl FnOnce(&mut accesskit::Node)) -> Self {
563        with(&mut self.get_accessibility_data().builder);
564        self
565    }
566}
567
568pub trait TextStyleExt
569where
570    Self: Sized,
571{
572    fn get_text_style_data(&mut self) -> &mut TextStyleData;
573
574    fn color(mut self, color: impl Into<Color>) -> Self {
575        self.get_text_style_data().color = Some(color.into());
576        self
577    }
578
579    fn text_align(mut self, text_align: impl Into<TextAlign>) -> Self {
580        self.get_text_style_data().text_align = Some(text_align.into());
581        self
582    }
583
584    fn font_size(mut self, font_size: impl Into<FontSize>) -> Self {
585        self.get_text_style_data().font_size = Some(font_size.into());
586        self
587    }
588
589    fn font_family(mut self, font_family: impl Into<Cow<'static, str>>) -> Self {
590        self.get_text_style_data()
591            .font_families
592            .push(font_family.into());
593        self
594    }
595
596    fn font_slant(mut self, font_slant: impl Into<FontSlant>) -> Self {
597        self.get_text_style_data().font_slant = Some(font_slant.into());
598        self
599    }
600
601    fn font_weight(mut self, font_weight: impl Into<FontWeight>) -> Self {
602        self.get_text_style_data().font_weight = Some(font_weight.into());
603        self
604    }
605
606    fn font_width(mut self, font_width: impl Into<FontWidth>) -> Self {
607        self.get_text_style_data().font_width = Some(font_width.into());
608        self
609    }
610
611    fn text_height(mut self, text_height: impl Into<TextHeightBehavior>) -> Self {
612        self.get_text_style_data().text_height = Some(text_height.into());
613        self
614    }
615
616    fn text_overflow(mut self, text_overflow: impl Into<TextOverflow>) -> Self {
617        self.get_text_style_data().text_overflow = Some(text_overflow.into());
618        self
619    }
620
621    fn text_shadow(mut self, text_shadow: impl Into<TextShadow>) -> Self {
622        self.get_text_style_data()
623            .text_shadows
624            .push(text_shadow.into());
625        self
626    }
627}
628
629pub trait StyleExt
630where
631    Self: Sized,
632{
633    fn get_style(&mut self) -> &mut StyleState;
634
635    fn background<S: Into<Color>>(mut self, background: S) -> Self {
636        self.get_style().background = Fill::Color(background.into());
637        self
638    }
639
640    fn background_conic_gradient<S: Into<ConicGradient>>(mut self, background: S) -> Self {
641        self.get_style().background = Fill::ConicGradient(Box::new(background.into()));
642        self
643    }
644
645    fn background_linear_gradient<S: Into<LinearGradient>>(mut self, background: S) -> Self {
646        self.get_style().background = Fill::LinearGradient(Box::new(background.into()));
647        self
648    }
649
650    fn background_radial_gradient<S: Into<RadialGradient>>(mut self, background: S) -> Self {
651        self.get_style().background = Fill::RadialGradient(Box::new(background.into()));
652        self
653    }
654
655    fn border(mut self, border: impl Into<Option<Border>>) -> Self {
656        if let Some(border) = border.into() {
657            self.get_style().borders.push(border);
658        }
659        self
660    }
661
662    fn shadow(mut self, shadow: impl Into<Shadow>) -> Self {
663        self.get_style().shadows.push(shadow.into());
664        self
665    }
666
667    fn corner_radius(mut self, corner_radius: impl Into<CornerRadius>) -> Self {
668        self.get_style().corner_radius = corner_radius.into();
669        self
670    }
671}
672
673impl<T: StyleExt> CornerRadiusExt for T {
674    fn with_corner_radius(mut self, corner_radius: f32) -> Self {
675        self.get_style().corner_radius = CornerRadius::new_all(corner_radius);
676        self
677    }
678}
679
680pub trait CornerRadiusExt: Sized {
681    fn with_corner_radius(self, corner_radius: f32) -> Self;
682
683    /// Shortcut for `corner_radius(0.)` - removes border radius.
684    fn rounded_none(self) -> Self {
685        self.with_corner_radius(0.)
686    }
687
688    /// Shortcut for `corner_radius(6.)` - default border radius.
689    fn rounded(self) -> Self {
690        self.with_corner_radius(6.)
691    }
692
693    /// Shortcut for `corner_radius(4.)` - small border radius.
694    fn rounded_sm(self) -> Self {
695        self.with_corner_radius(4.)
696    }
697
698    /// Shortcut for `corner_radius(6.)` - medium border radius.
699    fn rounded_md(self) -> Self {
700        self.with_corner_radius(6.)
701    }
702
703    /// Shortcut for `corner_radius(8.)` - large border radius.
704    fn rounded_lg(self) -> Self {
705        self.with_corner_radius(8.)
706    }
707
708    /// Shortcut for `corner_radius(12.)` - extra large border radius.
709    fn rounded_xl(self) -> Self {
710        self.with_corner_radius(12.)
711    }
712
713    /// Shortcut for `corner_radius(16.)` - extra large border radius.
714    fn rounded_2xl(self) -> Self {
715        self.with_corner_radius(16.)
716    }
717
718    /// Shortcut for `corner_radius(24.)` - extra large border radius.
719    fn rounded_3xl(self) -> Self {
720        self.with_corner_radius(24.)
721    }
722
723    /// Shortcut for `corner_radius(32.)` - extra large border radius.
724    fn rounded_4xl(self) -> Self {
725        self.with_corner_radius(32.)
726    }
727
728    /// Shortcut for `corner_radius(99.)` - fully rounded (pill shape).
729    fn rounded_full(self) -> Self {
730        self.with_corner_radius(99.)
731    }
732}
733
734pub trait MaybeExt
735where
736    Self: Sized,
737{
738    fn maybe(self, bool: impl Into<bool>, then: impl FnOnce(Self) -> Self) -> Self {
739        if bool.into() { then(self) } else { self }
740    }
741
742    fn map<T>(self, data: Option<T>, then: impl FnOnce(Self, T) -> Self) -> Self {
743        if let Some(data) = data {
744            then(self, data)
745        } else {
746            self
747        }
748    }
749}
750
751pub trait LayerExt
752where
753    Self: Sized,
754{
755    fn get_layer(&mut self) -> &mut Layer;
756
757    fn layer(mut self, layer: impl Into<Layer>) -> Self {
758        *self.get_layer() = layer.into();
759        self
760    }
761}
762
763pub trait ScrollableExt
764where
765    Self: Sized,
766{
767    fn get_effect(&mut self) -> &mut EffectData;
768
769    fn scrollable(mut self, scrollable: impl Into<bool>) -> Self {
770        self.get_effect().scrollable = scrollable.into();
771        self
772    }
773}
774
775pub trait InteractiveExt
776where
777    Self: Sized,
778{
779    fn get_effect(&mut self) -> &mut EffectData;
780
781    fn interactive(mut self, interactive: impl Into<Interactive>) -> Self {
782        self.get_effect().interactive = interactive.into();
783        self
784    }
785}
786
787pub trait EffectExt: Sized {
788    fn get_effect(&mut self) -> &mut EffectData;
789
790    fn effect(mut self, effect: EffectData) -> Self {
791        *self.get_effect() = effect;
792        self
793    }
794
795    fn overflow(mut self, overflow: impl Into<Overflow>) -> Self {
796        self.get_effect().overflow = overflow.into();
797        self
798    }
799
800    fn blur(mut self, blur: impl Into<f32>) -> Self {
801        self.get_effect().blur = Some(blur.into());
802        self
803    }
804
805    fn rotation(mut self, rotation: impl Into<f32>) -> Self {
806        self.get_effect().rotation = Some(rotation.into());
807        self
808    }
809
810    fn opacity(mut self, opacity: impl Into<f32>) -> Self {
811        self.get_effect().opacity = Some(opacity.into());
812        self
813    }
814
815    fn scale(mut self, scale: impl Into<Scale>) -> Self {
816        self.get_effect().scale = Some(scale.into());
817        self
818    }
819}
freya_core/elements/extensions.rs

freya_core/elements/
extensions.rs
