1// todo!(linux): remove
2#![cfg_attr(target_os = "linux", allow(dead_code))]
3
4mod app_menu;
5mod keystroke;
6
7#[cfg(target_os = "linux")]
8mod linux;
9
10#[cfg(target_os = "macos")]
11mod mac;
12
13#[cfg(any(target_os = "linux", feature = "macos-blade"))]
14mod blade;
15
16#[cfg(any(test, feature = "test-support"))]
17mod test;
18
19use crate::{
20 Action, AnyWindowHandle, AsyncWindowContext, BackgroundExecutor, Bounds, DevicePixels, Font,
21 FontId, FontMetrics, FontRun, ForegroundExecutor, GlobalPixels, GlyphId, Keymap, LineLayout,
22 Pixels, PlatformInput, Point, RenderGlyphParams, RenderImageParams, RenderSvgParams, Scene,
23 SharedString, Size, Task, TaskLabel, WindowContext,
24};
25use anyhow::Result;
26use async_task::Runnable;
27use futures::channel::oneshot;
28use parking::Unparker;
29use raw_window_handle::{HasDisplayHandle, HasWindowHandle};
30use seahash::SeaHasher;
31use serde::{Deserialize, Serialize};
32use std::borrow::Cow;
33use std::hash::{Hash, Hasher};
34use std::time::Duration;
35use std::{
36 any::Any,
37 fmt::{self, Debug},
38 ops::Range,
39 path::{Path, PathBuf},
40 rc::Rc,
41 sync::Arc,
42};
43use uuid::Uuid;
44
45pub use app_menu::*;
46pub use keystroke::*;
47#[cfg(target_os = "linux")]
48pub(crate) use linux::*;
49#[cfg(target_os = "macos")]
50pub(crate) use mac::*;
51#[cfg(any(test, feature = "test-support"))]
52pub(crate) use test::*;
53use time::UtcOffset;
54pub use util::SemanticVersion;
55
56#[cfg(target_os = "macos")]
57pub(crate) fn current_platform() -> Rc<dyn Platform> {
58 Rc::new(MacPlatform::new())
59}
60#[cfg(target_os = "linux")]
61pub(crate) fn current_platform() -> Rc<dyn Platform> {
62 Rc::new(LinuxPlatform::new())
63}
64
65pub(crate) trait Platform: 'static {
66 fn background_executor(&self) -> BackgroundExecutor;
67 fn foreground_executor(&self) -> ForegroundExecutor;
68 fn text_system(&self) -> Arc<dyn PlatformTextSystem>;
69
70 fn run(&self, on_finish_launching: Box<dyn 'static + FnOnce()>);
71 fn quit(&self);
72 fn restart(&self);
73 fn activate(&self, ignoring_other_apps: bool);
74 fn hide(&self);
75 fn hide_other_apps(&self);
76 fn unhide_other_apps(&self);
77
78 fn displays(&self) -> Vec<Rc<dyn PlatformDisplay>>;
79 fn display(&self, id: DisplayId) -> Option<Rc<dyn PlatformDisplay>>;
80 fn active_window(&self) -> Option<AnyWindowHandle>;
81 fn open_window(
82 &self,
83 handle: AnyWindowHandle,
84 options: WindowOptions,
85 ) -> Box<dyn PlatformWindow>;
86
87 /// Returns the appearance of the application's windows.
88 fn window_appearance(&self) -> WindowAppearance;
89
90 fn open_url(&self, url: &str);
91 fn on_open_urls(&self, callback: Box<dyn FnMut(Vec<String>)>);
92 fn prompt_for_paths(
93 &self,
94 options: PathPromptOptions,
95 ) -> oneshot::Receiver<Option<Vec<PathBuf>>>;
96 fn prompt_for_new_path(&self, directory: &Path) -> oneshot::Receiver<Option<PathBuf>>;
97 fn reveal_path(&self, path: &Path);
98
99 fn on_become_active(&self, callback: Box<dyn FnMut()>);
100 fn on_resign_active(&self, callback: Box<dyn FnMut()>);
101 fn on_quit(&self, callback: Box<dyn FnMut()>);
102 fn on_reopen(&self, callback: Box<dyn FnMut()>);
103 fn on_event(&self, callback: Box<dyn FnMut(PlatformInput) -> bool>);
104
105 fn set_menus(&self, menus: Vec<Menu>, keymap: &Keymap);
106 fn on_app_menu_action(&self, callback: Box<dyn FnMut(&dyn Action)>);
107 fn on_will_open_app_menu(&self, callback: Box<dyn FnMut()>);
108 fn on_validate_app_menu_command(&self, callback: Box<dyn FnMut(&dyn Action) -> bool>);
109
110 fn os_name(&self) -> &'static str;
111 fn os_version(&self) -> Result<SemanticVersion>;
112 fn app_version(&self) -> Result<SemanticVersion>;
113 fn app_path(&self) -> Result<PathBuf>;
114 fn local_timezone(&self) -> UtcOffset;
115 fn double_click_interval(&self) -> Duration;
116 fn path_for_auxiliary_executable(&self, name: &str) -> Result<PathBuf>;
117
118 fn set_cursor_style(&self, style: CursorStyle);
119 fn should_auto_hide_scrollbars(&self) -> bool;
120
121 fn write_to_clipboard(&self, item: ClipboardItem);
122 fn read_from_clipboard(&self) -> Option<ClipboardItem>;
123
124 fn write_credentials(&self, url: &str, username: &str, password: &[u8]) -> Task<Result<()>>;
125 fn read_credentials(&self, url: &str) -> Task<Result<Option<(String, Vec<u8>)>>>;
126 fn delete_credentials(&self, url: &str) -> Task<Result<()>>;
127}
128
129/// A handle to a platform's display, e.g. a monitor or laptop screen.
130pub trait PlatformDisplay: Send + Sync + Debug {
131 /// Get the ID for this display
132 fn id(&self) -> DisplayId;
133
134 /// Returns a stable identifier for this display that can be persisted and used
135 /// across system restarts.
136 fn uuid(&self) -> Result<Uuid>;
137
138 /// Get the bounds for this display
139 fn bounds(&self) -> Bounds<GlobalPixels>;
140}
141
142/// An opaque identifier for a hardware display
143#[derive(PartialEq, Eq, Hash, Copy, Clone)]
144pub struct DisplayId(pub(crate) u32);
145
146impl Debug for DisplayId {
147 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
148 write!(f, "DisplayId({})", self.0)
149 }
150}
151
152unsafe impl Send for DisplayId {}
153
154pub(crate) trait PlatformWindow: HasWindowHandle + HasDisplayHandle {
155 fn bounds(&self) -> WindowBounds;
156 fn content_size(&self) -> Size<Pixels>;
157 fn scale_factor(&self) -> f32;
158 fn titlebar_height(&self) -> Pixels;
159 fn appearance(&self) -> WindowAppearance;
160 fn display(&self) -> Rc<dyn PlatformDisplay>;
161 fn mouse_position(&self) -> Point<Pixels>;
162 fn modifiers(&self) -> Modifiers;
163 fn as_any_mut(&mut self) -> &mut dyn Any;
164 fn set_input_handler(&mut self, input_handler: PlatformInputHandler);
165 fn take_input_handler(&mut self) -> Option<PlatformInputHandler>;
166 fn prompt(
167 &self,
168 level: PromptLevel,
169 msg: &str,
170 detail: Option<&str>,
171 answers: &[&str],
172 ) -> oneshot::Receiver<usize>;
173 fn activate(&self);
174 fn set_title(&mut self, title: &str);
175 fn set_edited(&mut self, edited: bool);
176 fn show_character_palette(&self);
177 fn minimize(&self);
178 fn zoom(&self);
179 fn toggle_full_screen(&self);
180 fn on_request_frame(&self, callback: Box<dyn FnMut()>);
181 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> bool>);
182 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>);
183 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>);
184 fn on_fullscreen(&self, callback: Box<dyn FnMut(bool)>);
185 fn on_moved(&self, callback: Box<dyn FnMut()>);
186 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>);
187 fn on_close(&self, callback: Box<dyn FnOnce()>);
188 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>);
189 fn is_topmost_for_position(&self, position: Point<Pixels>) -> bool;
190 fn draw(&self, scene: &Scene);
191 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas>;
192 fn set_graphics_profiler_enabled(&self, enabled: bool);
193
194 #[cfg(any(test, feature = "test-support"))]
195 fn as_test(&mut self) -> Option<&mut TestWindow> {
196 None
197 }
198}
199
200/// This type is public so that our test macro can generate and use it, but it should not
201/// be considered part of our public API.
202#[doc(hidden)]
203pub trait PlatformDispatcher: Send + Sync {
204 fn is_main_thread(&self) -> bool;
205 fn dispatch(&self, runnable: Runnable, label: Option<TaskLabel>);
206 fn dispatch_on_main_thread(&self, runnable: Runnable);
207 fn dispatch_after(&self, duration: Duration, runnable: Runnable);
208 fn tick(&self, background_only: bool) -> bool;
209 fn park(&self);
210 fn unparker(&self) -> Unparker;
211
212 #[cfg(any(test, feature = "test-support"))]
213 fn as_test(&self) -> Option<&TestDispatcher> {
214 None
215 }
216}
217
218pub(crate) trait PlatformTextSystem: Send + Sync {
219 fn add_fonts(&self, fonts: Vec<Cow<'static, [u8]>>) -> Result<()>;
220 fn all_font_names(&self) -> Vec<String>;
221 fn all_font_families(&self) -> Vec<String>;
222 fn font_id(&self, descriptor: &Font) -> Result<FontId>;
223 fn font_metrics(&self, font_id: FontId) -> FontMetrics;
224 fn typographic_bounds(&self, font_id: FontId, glyph_id: GlyphId) -> Result<Bounds<f32>>;
225 fn advance(&self, font_id: FontId, glyph_id: GlyphId) -> Result<Size<f32>>;
226 fn glyph_for_char(&self, font_id: FontId, ch: char) -> Option<GlyphId>;
227 fn glyph_raster_bounds(&self, params: &RenderGlyphParams) -> Result<Bounds<DevicePixels>>;
228 fn rasterize_glyph(
229 &self,
230 params: &RenderGlyphParams,
231 raster_bounds: Bounds<DevicePixels>,
232 ) -> Result<(Size<DevicePixels>, Vec<u8>)>;
233 fn layout_line(&self, text: &str, font_size: Pixels, runs: &[FontRun]) -> LineLayout;
234 fn wrap_line(
235 &self,
236 text: &str,
237 font_id: FontId,
238 font_size: Pixels,
239 width: Pixels,
240 ) -> Vec<usize>;
241}
242
243/// Basic metadata about the current application and operating system.
244#[derive(Clone, Debug)]
245pub struct AppMetadata {
246 /// The name of the current operating system
247 pub os_name: &'static str,
248
249 /// The operating system's version
250 pub os_version: Option<SemanticVersion>,
251
252 /// The current version of the application
253 pub app_version: Option<SemanticVersion>,
254}
255
256#[derive(PartialEq, Eq, Hash, Clone)]
257pub(crate) enum AtlasKey {
258 Glyph(RenderGlyphParams),
259 Svg(RenderSvgParams),
260 Image(RenderImageParams),
261}
262
263impl AtlasKey {
264 pub(crate) fn texture_kind(&self) -> AtlasTextureKind {
265 match self {
266 AtlasKey::Glyph(params) => {
267 if params.is_emoji {
268 AtlasTextureKind::Polychrome
269 } else {
270 AtlasTextureKind::Monochrome
271 }
272 }
273 AtlasKey::Svg(_) => AtlasTextureKind::Monochrome,
274 AtlasKey::Image(_) => AtlasTextureKind::Polychrome,
275 }
276 }
277}
278
279impl From<RenderGlyphParams> for AtlasKey {
280 fn from(params: RenderGlyphParams) -> Self {
281 Self::Glyph(params)
282 }
283}
284
285impl From<RenderSvgParams> for AtlasKey {
286 fn from(params: RenderSvgParams) -> Self {
287 Self::Svg(params)
288 }
289}
290
291impl From<RenderImageParams> for AtlasKey {
292 fn from(params: RenderImageParams) -> Self {
293 Self::Image(params)
294 }
295}
296
297pub(crate) trait PlatformAtlas: Send + Sync {
298 fn get_or_insert_with<'a>(
299 &self,
300 key: &AtlasKey,
301 build: &mut dyn FnMut() -> Result<(Size<DevicePixels>, Cow<'a, [u8]>)>,
302 ) -> Result<AtlasTile>;
303}
304
305#[derive(Clone, Debug, PartialEq, Eq)]
306#[repr(C)]
307pub(crate) struct AtlasTile {
308 pub(crate) texture_id: AtlasTextureId,
309 pub(crate) tile_id: TileId,
310 pub(crate) padding: u32,
311 pub(crate) bounds: Bounds<DevicePixels>,
312}
313
314#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
315#[repr(C)]
316pub(crate) struct AtlasTextureId {
317 // We use u32 instead of usize for Metal Shader Language compatibility
318 pub(crate) index: u32,
319 pub(crate) kind: AtlasTextureKind,
320}
321
322#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
323#[repr(C)]
324pub(crate) enum AtlasTextureKind {
325 Monochrome = 0,
326 Polychrome = 1,
327 Path = 2,
328}
329
330#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
331#[repr(C)]
332pub(crate) struct TileId(pub(crate) u32);
333
334impl From<etagere::AllocId> for TileId {
335 fn from(id: etagere::AllocId) -> Self {
336 Self(id.serialize())
337 }
338}
339
340impl From<TileId> for etagere::AllocId {
341 fn from(id: TileId) -> Self {
342 Self::deserialize(id.0)
343 }
344}
345
346pub(crate) struct PlatformInputHandler {
347 cx: AsyncWindowContext,
348 handler: Box<dyn InputHandler>,
349}
350
351impl PlatformInputHandler {
352 pub fn new(cx: AsyncWindowContext, handler: Box<dyn InputHandler>) -> Self {
353 Self { cx, handler }
354 }
355
356 fn selected_text_range(&mut self) -> Option<Range<usize>> {
357 self.cx
358 .update(|cx| self.handler.selected_text_range(cx))
359 .ok()
360 .flatten()
361 }
362
363 fn marked_text_range(&mut self) -> Option<Range<usize>> {
364 self.cx
365 .update(|cx| self.handler.marked_text_range(cx))
366 .ok()
367 .flatten()
368 }
369
370 fn text_for_range(&mut self, range_utf16: Range<usize>) -> Option<String> {
371 self.cx
372 .update(|cx| self.handler.text_for_range(range_utf16, cx))
373 .ok()
374 .flatten()
375 }
376
377 fn replace_text_in_range(&mut self, replacement_range: Option<Range<usize>>, text: &str) {
378 self.cx
379 .update(|cx| {
380 self.handler
381 .replace_text_in_range(replacement_range, text, cx);
382 })
383 .ok();
384 }
385
386 fn replace_and_mark_text_in_range(
387 &mut self,
388 range_utf16: Option<Range<usize>>,
389 new_text: &str,
390 new_selected_range: Option<Range<usize>>,
391 ) {
392 self.cx
393 .update(|cx| {
394 self.handler.replace_and_mark_text_in_range(
395 range_utf16,
396 new_text,
397 new_selected_range,
398 cx,
399 )
400 })
401 .ok();
402 }
403
404 fn unmark_text(&mut self) {
405 self.cx.update(|cx| self.handler.unmark_text(cx)).ok();
406 }
407
408 fn bounds_for_range(&mut self, range_utf16: Range<usize>) -> Option<Bounds<Pixels>> {
409 self.cx
410 .update(|cx| self.handler.bounds_for_range(range_utf16, cx))
411 .ok()
412 .flatten()
413 }
414
415 pub(crate) fn flush_pending_input(&mut self, input: &str, cx: &mut WindowContext) {
416 let Some(range) = self.handler.selected_text_range(cx) else {
417 return;
418 };
419 self.handler.replace_text_in_range(Some(range), input, cx);
420 }
421}
422
423/// Zed's interface for handling text input from the platform's IME system
424/// This is currently a 1:1 exposure of the NSTextInputClient API:
425///
426/// <https://developer.apple.com/documentation/appkit/nstextinputclient>
427pub trait InputHandler: 'static {
428 /// Get the range of the user's currently selected text, if any
429 /// Corresponds to [selectedRange()](https://developer.apple.com/documentation/appkit/nstextinputclient/1438242-selectedrange)
430 ///
431 /// Return value is in terms of UTF-16 characters, from 0 to the length of the document
432 fn selected_text_range(&mut self, cx: &mut WindowContext) -> Option<Range<usize>>;
433
434 /// Get the range of the currently marked text, if any
435 /// Corresponds to [markedRange()](https://developer.apple.com/documentation/appkit/nstextinputclient/1438250-markedrange)
436 ///
437 /// Return value is in terms of UTF-16 characters, from 0 to the length of the document
438 fn marked_text_range(&mut self, cx: &mut WindowContext) -> Option<Range<usize>>;
439
440 /// Get the text for the given document range in UTF-16 characters
441 /// Corresponds to [attributedSubstring(forProposedRange: actualRange:)](https://developer.apple.com/documentation/appkit/nstextinputclient/1438238-attributedsubstring)
442 ///
443 /// range_utf16 is in terms of UTF-16 characters
444 fn text_for_range(
445 &mut self,
446 range_utf16: Range<usize>,
447 cx: &mut WindowContext,
448 ) -> Option<String>;
449
450 /// Replace the text in the given document range with the given text
451 /// Corresponds to [insertText(_:replacementRange:)](https://developer.apple.com/documentation/appkit/nstextinputclient/1438258-inserttext)
452 ///
453 /// replacement_range is in terms of UTF-16 characters
454 fn replace_text_in_range(
455 &mut self,
456 replacement_range: Option<Range<usize>>,
457 text: &str,
458 cx: &mut WindowContext,
459 );
460
461 /// Replace the text in the given document range with the given text,
462 /// and mark the given text as part of of an IME 'composing' state
463 /// Corresponds to [setMarkedText(_:selectedRange:replacementRange:)](https://developer.apple.com/documentation/appkit/nstextinputclient/1438246-setmarkedtext)
464 ///
465 /// range_utf16 is in terms of UTF-16 characters
466 /// new_selected_range is in terms of UTF-16 characters
467 fn replace_and_mark_text_in_range(
468 &mut self,
469 range_utf16: Option<Range<usize>>,
470 new_text: &str,
471 new_selected_range: Option<Range<usize>>,
472 cx: &mut WindowContext,
473 );
474
475 /// Remove the IME 'composing' state from the document
476 /// Corresponds to [unmarkText()](https://developer.apple.com/documentation/appkit/nstextinputclient/1438239-unmarktext)
477 fn unmark_text(&mut self, cx: &mut WindowContext);
478
479 /// Get the bounds of the given document range in screen coordinates
480 /// Corresponds to [firstRect(forCharacterRange:actualRange:)](https://developer.apple.com/documentation/appkit/nstextinputclient/1438240-firstrect)
481 ///
482 /// This is used for positioning the IME candidate window
483 fn bounds_for_range(
484 &mut self,
485 range_utf16: Range<usize>,
486 cx: &mut WindowContext,
487 ) -> Option<Bounds<Pixels>>;
488}
489
490/// The variables that can be configured when creating a new window
491#[derive(Debug)]
492pub struct WindowOptions {
493 /// The initial bounds of the window
494 pub bounds: WindowBounds,
495
496 /// The titlebar configuration of the window
497 pub titlebar: Option<TitlebarOptions>,
498
499 /// Whether the window should be centered on the screen
500 pub center: bool,
501
502 /// Whether the window should be focused when created
503 pub focus: bool,
504
505 /// Whether the window should be shown when created
506 pub show: bool,
507
508 /// The kind of window to create
509 pub kind: WindowKind,
510
511 /// Whether the window should be movable by the user
512 pub is_movable: bool,
513
514 /// The display to create the window on
515 pub display_id: Option<DisplayId>,
516}
517
518impl Default for WindowOptions {
519 fn default() -> Self {
520 Self {
521 bounds: WindowBounds::default(),
522 titlebar: Some(TitlebarOptions {
523 title: Default::default(),
524 appears_transparent: Default::default(),
525 traffic_light_position: Default::default(),
526 }),
527 center: false,
528 focus: true,
529 show: true,
530 kind: WindowKind::Normal,
531 is_movable: true,
532 display_id: None,
533 }
534 }
535}
536
537/// The options that can be configured for a window's titlebar
538#[derive(Debug, Default)]
539pub struct TitlebarOptions {
540 /// The initial title of the window
541 pub title: Option<SharedString>,
542
543 /// Whether the titlebar should appear transparent
544 pub appears_transparent: bool,
545
546 /// The position of the macOS traffic light buttons
547 pub traffic_light_position: Option<Point<Pixels>>,
548}
549
550/// The kind of window to create
551#[derive(Copy, Clone, Debug, PartialEq, Eq)]
552pub enum WindowKind {
553 /// A normal application window
554 Normal,
555
556 /// A window that appears above all other windows, usually used for alerts or popups
557 /// use sparingly!
558 PopUp,
559}
560
561/// Which bounds algorithm to use for the initial size a window
562#[derive(Copy, Clone, Debug, PartialEq, Default)]
563pub enum WindowBounds {
564 /// The window should be full screen, on macOS this corresponds to the full screen feature
565 Fullscreen,
566
567 /// Make the window as large as the current display's size.
568 #[default]
569 Maximized,
570
571 /// Set the window to the given size in pixels
572 Fixed(Bounds<GlobalPixels>),
573}
574
575/// The appearance of the window, as defined by the operating system.
576///
577/// On macOS, this corresponds to named [`NSAppearance`](https://developer.apple.com/documentation/appkit/nsappearance)
578/// values.
579#[derive(Copy, Clone, Debug)]
580pub enum WindowAppearance {
581 /// A light appearance.
582 ///
583 /// On macOS, this corresponds to the `aqua` appearance.
584 Light,
585
586 /// A light appearance with vibrant colors.
587 ///
588 /// On macOS, this corresponds to the `NSAppearanceNameVibrantLight` appearance.
589 VibrantLight,
590
591 /// A dark appearance.
592 ///
593 /// On macOS, this corresponds to the `darkAqua` appearance.
594 Dark,
595
596 /// A dark appearance with vibrant colors.
597 ///
598 /// On macOS, this corresponds to the `NSAppearanceNameVibrantDark` appearance.
599 VibrantDark,
600}
601
602impl Default for WindowAppearance {
603 fn default() -> Self {
604 Self::Light
605 }
606}
607
608/// The options that can be configured for a file dialog prompt
609#[derive(Copy, Clone, Debug)]
610pub struct PathPromptOptions {
611 /// Should the prompt allow files to be selected?
612 pub files: bool,
613 /// Should the prompt allow directories to be selected?
614 pub directories: bool,
615 /// Should the prompt allow multiple files to be selected?
616 pub multiple: bool,
617}
618
619/// What kind of prompt styling to show
620#[derive(Copy, Clone, Debug)]
621pub enum PromptLevel {
622 /// A prompt that is shown when the user should be notified of something
623 Info,
624
625 /// A prompt that is shown when the user needs to be warned of a potential problem
626 Warning,
627
628 /// A prompt that is shown when a critical problem has occurred
629 Critical,
630}
631
632/// The style of the cursor (pointer)
633#[derive(Copy, Clone, Debug)]
634pub enum CursorStyle {
635 /// The default cursor
636 Arrow,
637
638 /// A text input cursor
639 /// corresponds to the CSS cursor value `text`
640 IBeam,
641
642 /// A crosshair cursor
643 /// corresponds to the CSS cursor value `crosshair`
644 Crosshair,
645
646 /// A closed hand cursor
647 /// corresponds to the CSS cursor value `grabbing`
648 ClosedHand,
649
650 /// An open hand cursor
651 /// corresponds to the CSS cursor value `grab`
652 OpenHand,
653
654 /// A pointing hand cursor
655 /// corresponds to the CSS cursor value `pointer`
656 PointingHand,
657
658 /// A resize left cursor
659 /// corresponds to the CSS cursor value `w-resize`
660 ResizeLeft,
661
662 /// A resize right cursor
663 /// corresponds to the CSS cursor value `e-resize`
664 ResizeRight,
665
666 /// A resize cursor to the left and right
667 /// corresponds to the CSS cursor value `col-resize`
668 ResizeLeftRight,
669
670 /// A resize up cursor
671 /// corresponds to the CSS cursor value `n-resize`
672 ResizeUp,
673
674 /// A resize down cursor
675 /// corresponds to the CSS cursor value `s-resize`
676 ResizeDown,
677
678 /// A resize cursor directing up and down
679 /// corresponds to the CSS cursor value `row-resize`
680 ResizeUpDown,
681
682 /// A cursor indicating that something will disappear if moved here
683 /// Does not correspond to a CSS cursor value
684 DisappearingItem,
685
686 /// A text input cursor for vertical layout
687 /// corresponds to the CSS cursor value `vertical-text`
688 IBeamCursorForVerticalLayout,
689
690 /// A cursor indicating that the operation is not allowed
691 /// corresponds to the CSS cursor value `not-allowed`
692 OperationNotAllowed,
693
694 /// A cursor indicating that the operation will result in a link
695 /// corresponds to the CSS cursor value `alias`
696 DragLink,
697
698 /// A cursor indicating that the operation will result in a copy
699 /// corresponds to the CSS cursor value `copy`
700 DragCopy,
701
702 /// A cursor indicating that the operation will result in a context menu
703 /// corresponds to the CSS cursor value `context-menu`
704 ContextualMenu,
705}
706
707impl Default for CursorStyle {
708 fn default() -> Self {
709 Self::Arrow
710 }
711}
712
713/// A clipboard item that should be copied to the clipboard
714#[derive(Clone, Debug, Eq, PartialEq)]
715pub struct ClipboardItem {
716 pub(crate) text: String,
717 pub(crate) metadata: Option<String>,
718}
719
720impl ClipboardItem {
721 /// Create a new clipboard item with the given text
722 pub fn new(text: String) -> Self {
723 Self {
724 text,
725 metadata: None,
726 }
727 }
728
729 /// Create a new clipboard item with the given text and metadata
730 pub fn with_metadata<T: Serialize>(mut self, metadata: T) -> Self {
731 self.metadata = Some(serde_json::to_string(&metadata).unwrap());
732 self
733 }
734
735 /// Get the text of the clipboard item
736 pub fn text(&self) -> &String {
737 &self.text
738 }
739
740 /// Get the metadata of the clipboard item
741 pub fn metadata<T>(&self) -> Option<T>
742 where
743 T: for<'a> Deserialize<'a>,
744 {
745 self.metadata
746 .as_ref()
747 .and_then(|m| serde_json::from_str(m).ok())
748 }
749
750 pub(crate) fn text_hash(text: &str) -> u64 {
751 let mut hasher = SeaHasher::new();
752 text.hash(&mut hasher);
753 hasher.finish()
754 }
755}