1#![deny(unsafe_op_in_unsafe_fn)]
2
3use std::{
4 cell::RefCell,
5 num::NonZeroIsize,
6 path::PathBuf,
7 rc::{Rc, Weak},
8 str::FromStr,
9 sync::{Arc, Once},
10 time::{Duration, Instant},
11};
12
13use ::util::ResultExt;
14use anyhow::{Context as _, Result};
15use async_task::Runnable;
16use futures::channel::oneshot::{self, Receiver};
17use raw_window_handle as rwh;
18use smallvec::SmallVec;
19use windows::{
20 Win32::{
21 Foundation::*,
22 Graphics::Gdi::*,
23 System::{Com::*, LibraryLoader::*, Ole::*, SystemServices::*},
24 UI::{Controls::*, HiDpi::*, Input::KeyboardAndMouse::*, Shell::*, WindowsAndMessaging::*},
25 },
26 core::*,
27};
28
29use crate::*;
30
31pub(crate) struct WindowsWindow(pub Rc<WindowsWindowInner>);
32
33pub struct WindowsWindowState {
34 pub origin: Point<Pixels>,
35 pub logical_size: Size<Pixels>,
36 pub min_size: Option<Size<Pixels>>,
37 pub fullscreen_restore_bounds: Bounds<Pixels>,
38 pub border_offset: WindowBorderOffset,
39 pub appearance: WindowAppearance,
40 pub scale_factor: f32,
41 pub restore_from_minimized: Option<Box<dyn FnMut(RequestFrameOptions)>>,
42
43 pub callbacks: Callbacks,
44 pub input_handler: Option<PlatformInputHandler>,
45 pub pending_surrogate: Option<u16>,
46 pub last_reported_modifiers: Option<Modifiers>,
47 pub last_reported_capslock: Option<Capslock>,
48 pub hovered: bool,
49
50 pub renderer: DirectXRenderer,
51
52 pub click_state: ClickState,
53 pub current_cursor: Option<HCURSOR>,
54 pub nc_button_pressed: Option<u32>,
55
56 pub display: WindowsDisplay,
57 fullscreen: Option<StyleAndBounds>,
58 initial_placement: Option<WindowOpenStatus>,
59 hwnd: HWND,
60}
61
62pub(crate) struct WindowsWindowInner {
63 hwnd: HWND,
64 pub(super) this: Weak<Self>,
65 drop_target_helper: IDropTargetHelper,
66 pub(crate) state: RefCell<WindowsWindowState>,
67 pub(crate) system_settings: RefCell<WindowsSystemSettings>,
68 pub(crate) handle: AnyWindowHandle,
69 pub(crate) hide_title_bar: bool,
70 pub(crate) is_movable: bool,
71 pub(crate) executor: ForegroundExecutor,
72 pub(crate) windows_version: WindowsVersion,
73 pub(crate) validation_number: usize,
74 pub(crate) main_receiver: flume::Receiver<Runnable>,
75 pub(crate) platform_window_handle: HWND,
76}
77
78impl WindowsWindowState {
79 fn new(
80 hwnd: HWND,
81 directx_devices: &DirectXDevices,
82 window_params: &CREATESTRUCTW,
83 current_cursor: Option<HCURSOR>,
84 display: WindowsDisplay,
85 min_size: Option<Size<Pixels>>,
86 appearance: WindowAppearance,
87 disable_direct_composition: bool,
88 ) -> Result<Self> {
89 let scale_factor = {
90 let monitor_dpi = unsafe { GetDpiForWindow(hwnd) } as f32;
91 monitor_dpi / USER_DEFAULT_SCREEN_DPI as f32
92 };
93 let origin = logical_point(window_params.x as f32, window_params.y as f32, scale_factor);
94 let logical_size = {
95 let physical_size = size(
96 DevicePixels(window_params.cx),
97 DevicePixels(window_params.cy),
98 );
99 physical_size.to_pixels(scale_factor)
100 };
101 let fullscreen_restore_bounds = Bounds {
102 origin,
103 size: logical_size,
104 };
105 let border_offset = WindowBorderOffset::default();
106 let restore_from_minimized = None;
107 let renderer = DirectXRenderer::new(hwnd, directx_devices, disable_direct_composition)
108 .context("Creating DirectX renderer")?;
109 let callbacks = Callbacks::default();
110 let input_handler = None;
111 let pending_surrogate = None;
112 let last_reported_modifiers = None;
113 let last_reported_capslock = None;
114 let hovered = false;
115 let click_state = ClickState::new();
116 let nc_button_pressed = None;
117 let fullscreen = None;
118 let initial_placement = None;
119
120 Ok(Self {
121 origin,
122 logical_size,
123 fullscreen_restore_bounds,
124 border_offset,
125 appearance,
126 scale_factor,
127 restore_from_minimized,
128 min_size,
129 callbacks,
130 input_handler,
131 pending_surrogate,
132 last_reported_modifiers,
133 last_reported_capslock,
134 hovered,
135 renderer,
136 click_state,
137 current_cursor,
138 nc_button_pressed,
139 display,
140 fullscreen,
141 initial_placement,
142 hwnd,
143 })
144 }
145
146 #[inline]
147 pub(crate) fn is_fullscreen(&self) -> bool {
148 self.fullscreen.is_some()
149 }
150
151 pub(crate) fn is_maximized(&self) -> bool {
152 !self.is_fullscreen() && unsafe { IsZoomed(self.hwnd) }.as_bool()
153 }
154
155 fn bounds(&self) -> Bounds<Pixels> {
156 Bounds {
157 origin: self.origin,
158 size: self.logical_size,
159 }
160 }
161
162 // Calculate the bounds used for saving and whether the window is maximized.
163 fn calculate_window_bounds(&self) -> (Bounds<Pixels>, bool) {
164 let placement = unsafe {
165 let mut placement = WINDOWPLACEMENT {
166 length: std::mem::size_of::<WINDOWPLACEMENT>() as u32,
167 ..Default::default()
168 };
169 GetWindowPlacement(self.hwnd, &mut placement)
170 .context("failed to get window placement")
171 .log_err();
172 placement
173 };
174 (
175 calculate_client_rect(
176 placement.rcNormalPosition,
177 self.border_offset,
178 self.scale_factor,
179 ),
180 placement.showCmd == SW_SHOWMAXIMIZED.0 as u32,
181 )
182 }
183
184 fn window_bounds(&self) -> WindowBounds {
185 let (bounds, maximized) = self.calculate_window_bounds();
186
187 if self.is_fullscreen() {
188 WindowBounds::Fullscreen(self.fullscreen_restore_bounds)
189 } else if maximized {
190 WindowBounds::Maximized(bounds)
191 } else {
192 WindowBounds::Windowed(bounds)
193 }
194 }
195
196 /// get the logical size of the app's drawable area.
197 ///
198 /// Currently, GPUI uses the logical size of the app to handle mouse interactions (such as
199 /// whether the mouse collides with other elements of GPUI).
200 fn content_size(&self) -> Size<Pixels> {
201 self.logical_size
202 }
203}
204
205impl WindowsWindowInner {
206 fn new(context: &mut WindowCreateContext, hwnd: HWND, cs: &CREATESTRUCTW) -> Result<Rc<Self>> {
207 let state = RefCell::new(WindowsWindowState::new(
208 hwnd,
209 &context.directx_devices,
210 cs,
211 context.current_cursor,
212 context.display,
213 context.min_size,
214 context.appearance,
215 context.disable_direct_composition,
216 )?);
217
218 Ok(Rc::new_cyclic(|this| Self {
219 hwnd,
220 this: this.clone(),
221 drop_target_helper: context.drop_target_helper.clone(),
222 state,
223 handle: context.handle,
224 hide_title_bar: context.hide_title_bar,
225 is_movable: context.is_movable,
226 executor: context.executor.clone(),
227 windows_version: context.windows_version,
228 validation_number: context.validation_number,
229 main_receiver: context.main_receiver.clone(),
230 platform_window_handle: context.platform_window_handle,
231 system_settings: RefCell::new(WindowsSystemSettings::new(context.display)),
232 }))
233 }
234
235 fn toggle_fullscreen(&self) {
236 let Some(this) = self.this.upgrade() else {
237 log::error!("Unable to toggle fullscreen: window has been dropped");
238 return;
239 };
240 self.executor
241 .spawn(async move {
242 let mut lock = this.state.borrow_mut();
243 let StyleAndBounds {
244 style,
245 x,
246 y,
247 cx,
248 cy,
249 } = if let Some(state) = lock.fullscreen.take() {
250 state
251 } else {
252 let (window_bounds, _) = lock.calculate_window_bounds();
253 lock.fullscreen_restore_bounds = window_bounds;
254 let style = WINDOW_STYLE(unsafe { get_window_long(this.hwnd, GWL_STYLE) } as _);
255 let mut rc = RECT::default();
256 unsafe { GetWindowRect(this.hwnd, &mut rc) }
257 .context("failed to get window rect")
258 .log_err();
259 let _ = lock.fullscreen.insert(StyleAndBounds {
260 style,
261 x: rc.left,
262 y: rc.top,
263 cx: rc.right - rc.left,
264 cy: rc.bottom - rc.top,
265 });
266 let style = style
267 & !(WS_THICKFRAME
268 | WS_SYSMENU
269 | WS_MAXIMIZEBOX
270 | WS_MINIMIZEBOX
271 | WS_CAPTION);
272 let physical_bounds = lock.display.physical_bounds();
273 StyleAndBounds {
274 style,
275 x: physical_bounds.left().0,
276 y: physical_bounds.top().0,
277 cx: physical_bounds.size.width.0,
278 cy: physical_bounds.size.height.0,
279 }
280 };
281 drop(lock);
282 unsafe { set_window_long(this.hwnd, GWL_STYLE, style.0 as isize) };
283 unsafe {
284 SetWindowPos(
285 this.hwnd,
286 None,
287 x,
288 y,
289 cx,
290 cy,
291 SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOZORDER,
292 )
293 }
294 .log_err();
295 })
296 .detach();
297 }
298
299 fn set_window_placement(&self) -> Result<()> {
300 let Some(open_status) = self.state.borrow_mut().initial_placement.take() else {
301 return Ok(());
302 };
303 match open_status.state {
304 WindowOpenState::Maximized => unsafe {
305 SetWindowPlacement(self.hwnd, &open_status.placement)
306 .context("failed to set window placement")?;
307 ShowWindowAsync(self.hwnd, SW_MAXIMIZE).ok()?;
308 },
309 WindowOpenState::Fullscreen => {
310 unsafe {
311 SetWindowPlacement(self.hwnd, &open_status.placement)
312 .context("failed to set window placement")?
313 };
314 self.toggle_fullscreen();
315 }
316 WindowOpenState::Windowed => unsafe {
317 SetWindowPlacement(self.hwnd, &open_status.placement)
318 .context("failed to set window placement")?;
319 },
320 }
321 Ok(())
322 }
323}
324
325#[derive(Default)]
326pub(crate) struct Callbacks {
327 pub(crate) request_frame: Option<Box<dyn FnMut(RequestFrameOptions)>>,
328 pub(crate) input: Option<Box<dyn FnMut(crate::PlatformInput) -> DispatchEventResult>>,
329 pub(crate) active_status_change: Option<Box<dyn FnMut(bool)>>,
330 pub(crate) hovered_status_change: Option<Box<dyn FnMut(bool)>>,
331 pub(crate) resize: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
332 pub(crate) moved: Option<Box<dyn FnMut()>>,
333 pub(crate) should_close: Option<Box<dyn FnMut() -> bool>>,
334 pub(crate) close: Option<Box<dyn FnOnce()>>,
335 pub(crate) hit_test_window_control: Option<Box<dyn FnMut() -> Option<WindowControlArea>>>,
336 pub(crate) appearance_changed: Option<Box<dyn FnMut()>>,
337}
338
339struct WindowCreateContext {
340 inner: Option<Result<Rc<WindowsWindowInner>>>,
341 handle: AnyWindowHandle,
342 hide_title_bar: bool,
343 display: WindowsDisplay,
344 is_movable: bool,
345 min_size: Option<Size<Pixels>>,
346 executor: ForegroundExecutor,
347 current_cursor: Option<HCURSOR>,
348 windows_version: WindowsVersion,
349 drop_target_helper: IDropTargetHelper,
350 validation_number: usize,
351 main_receiver: flume::Receiver<Runnable>,
352 platform_window_handle: HWND,
353 appearance: WindowAppearance,
354 disable_direct_composition: bool,
355 directx_devices: DirectXDevices,
356}
357
358impl WindowsWindow {
359 pub(crate) fn new(
360 handle: AnyWindowHandle,
361 params: WindowParams,
362 creation_info: WindowCreationInfo,
363 ) -> Result<Self> {
364 let WindowCreationInfo {
365 icon,
366 executor,
367 current_cursor,
368 windows_version,
369 drop_target_helper,
370 validation_number,
371 main_receiver,
372 platform_window_handle,
373 disable_direct_composition,
374 directx_devices,
375 } = creation_info;
376 register_window_class(icon);
377 let hide_title_bar = params
378 .titlebar
379 .as_ref()
380 .map(|titlebar| titlebar.appears_transparent)
381 .unwrap_or(true);
382 let window_name = HSTRING::from(
383 params
384 .titlebar
385 .as_ref()
386 .and_then(|titlebar| titlebar.title.as_ref())
387 .map(|title| title.as_ref())
388 .unwrap_or(""),
389 );
390
391 let (mut dwexstyle, dwstyle) = if params.kind == WindowKind::PopUp {
392 (WS_EX_TOOLWINDOW, WINDOW_STYLE(0x0))
393 } else {
394 let mut dwstyle = WS_SYSMENU;
395
396 if params.is_resizable {
397 dwstyle |= WS_THICKFRAME | WS_MAXIMIZEBOX;
398 }
399
400 if params.is_minimizable {
401 dwstyle |= WS_MINIMIZEBOX;
402 }
403
404 (WS_EX_APPWINDOW, dwstyle)
405 };
406 if !disable_direct_composition {
407 dwexstyle |= WS_EX_NOREDIRECTIONBITMAP;
408 }
409
410 let hinstance = get_module_handle();
411 let display = if let Some(display_id) = params.display_id {
412 // if we obtain a display_id, then this ID must be valid.
413 WindowsDisplay::new(display_id).unwrap()
414 } else {
415 WindowsDisplay::primary_monitor().unwrap()
416 };
417 let appearance = system_appearance().unwrap_or_default();
418 let mut context = WindowCreateContext {
419 inner: None,
420 handle,
421 hide_title_bar,
422 display,
423 is_movable: params.is_movable,
424 min_size: params.window_min_size,
425 executor,
426 current_cursor,
427 windows_version,
428 drop_target_helper,
429 validation_number,
430 main_receiver,
431 platform_window_handle,
432 appearance,
433 disable_direct_composition,
434 directx_devices,
435 };
436 let creation_result = unsafe {
437 CreateWindowExW(
438 dwexstyle,
439 WINDOW_CLASS_NAME,
440 &window_name,
441 dwstyle,
442 CW_USEDEFAULT,
443 CW_USEDEFAULT,
444 CW_USEDEFAULT,
445 CW_USEDEFAULT,
446 None,
447 None,
448 Some(hinstance.into()),
449 Some(&context as *const _ as *const _),
450 )
451 };
452
453 // Failure to create a `WindowsWindowState` can cause window creation to fail,
454 // so check the inner result first.
455 let this = context.inner.take().transpose()?;
456 let hwnd = creation_result?;
457 let this = this.unwrap();
458
459 register_drag_drop(&this)?;
460 configure_dwm_dark_mode(hwnd, appearance);
461 this.state.borrow_mut().border_offset.update(hwnd)?;
462 let placement = retrieve_window_placement(
463 hwnd,
464 display,
465 params.bounds,
466 this.state.borrow().scale_factor,
467 this.state.borrow().border_offset,
468 )?;
469 if params.show {
470 unsafe { SetWindowPlacement(hwnd, &placement)? };
471 } else {
472 this.state.borrow_mut().initial_placement = Some(WindowOpenStatus {
473 placement,
474 state: WindowOpenState::Windowed,
475 });
476 }
477
478 Ok(Self(this))
479 }
480}
481
482impl rwh::HasWindowHandle for WindowsWindow {
483 fn window_handle(&self) -> std::result::Result<rwh::WindowHandle<'_>, rwh::HandleError> {
484 let raw = rwh::Win32WindowHandle::new(unsafe {
485 NonZeroIsize::new_unchecked(self.0.hwnd.0 as isize)
486 })
487 .into();
488 Ok(unsafe { rwh::WindowHandle::borrow_raw(raw) })
489 }
490}
491
492// todo(windows)
493impl rwh::HasDisplayHandle for WindowsWindow {
494 fn display_handle(&self) -> std::result::Result<rwh::DisplayHandle<'_>, rwh::HandleError> {
495 unimplemented!()
496 }
497}
498
499impl Drop for WindowsWindow {
500 fn drop(&mut self) {
501 // clone this `Rc` to prevent early release of the pointer
502 let this = self.0.clone();
503 self.0
504 .executor
505 .spawn(async move {
506 let handle = this.hwnd;
507 unsafe {
508 RevokeDragDrop(handle).log_err();
509 DestroyWindow(handle).log_err();
510 }
511 })
512 .detach();
513 }
514}
515
516impl PlatformWindow for WindowsWindow {
517 fn bounds(&self) -> Bounds<Pixels> {
518 self.0.state.borrow().bounds()
519 }
520
521 fn is_maximized(&self) -> bool {
522 self.0.state.borrow().is_maximized()
523 }
524
525 fn window_bounds(&self) -> WindowBounds {
526 self.0.state.borrow().window_bounds()
527 }
528
529 /// get the logical size of the app's drawable area.
530 ///
531 /// Currently, GPUI uses the logical size of the app to handle mouse interactions (such as
532 /// whether the mouse collides with other elements of GPUI).
533 fn content_size(&self) -> Size<Pixels> {
534 self.0.state.borrow().content_size()
535 }
536
537 fn resize(&mut self, size: Size<Pixels>) {
538 let hwnd = self.0.hwnd;
539 let bounds =
540 crate::bounds(self.bounds().origin, size).to_device_pixels(self.scale_factor());
541 let rect = calculate_window_rect(bounds, self.0.state.borrow().border_offset);
542
543 self.0
544 .executor
545 .spawn(async move {
546 unsafe {
547 SetWindowPos(
548 hwnd,
549 None,
550 bounds.origin.x.0,
551 bounds.origin.y.0,
552 rect.right - rect.left,
553 rect.bottom - rect.top,
554 SWP_NOMOVE,
555 )
556 .context("unable to set window content size")
557 .log_err();
558 }
559 })
560 .detach();
561 }
562
563 fn scale_factor(&self) -> f32 {
564 self.0.state.borrow().scale_factor
565 }
566
567 fn appearance(&self) -> WindowAppearance {
568 self.0.state.borrow().appearance
569 }
570
571 fn display(&self) -> Option<Rc<dyn PlatformDisplay>> {
572 Some(Rc::new(self.0.state.borrow().display))
573 }
574
575 fn mouse_position(&self) -> Point<Pixels> {
576 let scale_factor = self.scale_factor();
577 let point = unsafe {
578 let mut point: POINT = std::mem::zeroed();
579 GetCursorPos(&mut point)
580 .context("unable to get cursor position")
581 .log_err();
582 ScreenToClient(self.0.hwnd, &mut point).ok().log_err();
583 point
584 };
585 logical_point(point.x as f32, point.y as f32, scale_factor)
586 }
587
588 fn modifiers(&self) -> Modifiers {
589 current_modifiers()
590 }
591
592 fn capslock(&self) -> Capslock {
593 current_capslock()
594 }
595
596 fn set_input_handler(&mut self, input_handler: PlatformInputHandler) {
597 self.0.state.borrow_mut().input_handler = Some(input_handler);
598 }
599
600 fn take_input_handler(&mut self) -> Option<PlatformInputHandler> {
601 self.0.state.borrow_mut().input_handler.take()
602 }
603
604 fn prompt(
605 &self,
606 level: PromptLevel,
607 msg: &str,
608 detail: Option<&str>,
609 answers: &[PromptButton],
610 ) -> Option<Receiver<usize>> {
611 let (done_tx, done_rx) = oneshot::channel();
612 let msg = msg.to_string();
613 let detail_string = detail.map(|detail| detail.to_string());
614 let handle = self.0.hwnd;
615 let answers = answers.to_vec();
616 self.0
617 .executor
618 .spawn(async move {
619 unsafe {
620 let mut config = TASKDIALOGCONFIG::default();
621 config.cbSize = std::mem::size_of::<TASKDIALOGCONFIG>() as _;
622 config.hwndParent = handle;
623 let title;
624 let main_icon;
625 match level {
626 crate::PromptLevel::Info => {
627 title = windows::core::w!("Info");
628 main_icon = TD_INFORMATION_ICON;
629 }
630 crate::PromptLevel::Warning => {
631 title = windows::core::w!("Warning");
632 main_icon = TD_WARNING_ICON;
633 }
634 crate::PromptLevel::Critical => {
635 title = windows::core::w!("Critical");
636 main_icon = TD_ERROR_ICON;
637 }
638 };
639 config.pszWindowTitle = title;
640 config.Anonymous1.pszMainIcon = main_icon;
641 let instruction = HSTRING::from(msg);
642 config.pszMainInstruction = PCWSTR::from_raw(instruction.as_ptr());
643 let hints_encoded;
644 if let Some(ref hints) = detail_string {
645 hints_encoded = HSTRING::from(hints);
646 config.pszContent = PCWSTR::from_raw(hints_encoded.as_ptr());
647 };
648 let mut button_id_map = Vec::with_capacity(answers.len());
649 let mut buttons = Vec::new();
650 let mut btn_encoded = Vec::new();
651 for (index, btn) in answers.iter().enumerate() {
652 let encoded = HSTRING::from(btn.label().as_ref());
653 let button_id = match btn {
654 PromptButton::Ok(_) => IDOK.0,
655 PromptButton::Cancel(_) => IDCANCEL.0,
656 // the first few low integer values are reserved for known buttons
657 // so for simplicity we just go backwards from -1
658 PromptButton::Other(_) => -(index as i32) - 1,
659 };
660 button_id_map.push(button_id);
661 buttons.push(TASKDIALOG_BUTTON {
662 nButtonID: button_id,
663 pszButtonText: PCWSTR::from_raw(encoded.as_ptr()),
664 });
665 btn_encoded.push(encoded);
666 }
667 config.cButtons = buttons.len() as _;
668 config.pButtons = buttons.as_ptr();
669
670 config.pfCallback = None;
671 let mut res = std::mem::zeroed();
672 let _ = TaskDialogIndirect(&config, Some(&mut res), None, None)
673 .context("unable to create task dialog")
674 .log_err();
675
676 if let Some(clicked) =
677 button_id_map.iter().position(|&button_id| button_id == res)
678 {
679 let _ = done_tx.send(clicked);
680 }
681 }
682 })
683 .detach();
684
685 Some(done_rx)
686 }
687
688 fn activate(&self) {
689 let hwnd = self.0.hwnd;
690 let this = self.0.clone();
691 self.0
692 .executor
693 .spawn(async move {
694 this.set_window_placement().log_err();
695
696 unsafe {
697 // If the window is minimized, restore it.
698 if IsIconic(hwnd).as_bool() {
699 ShowWindowAsync(hwnd, SW_RESTORE).ok().log_err();
700 }
701
702 SetActiveWindow(hwnd).log_err();
703 SetFocus(Some(hwnd)).log_err();
704 }
705
706 // premium ragebait by windows, this is needed because the window
707 // must have received an input event to be able to set itself to foreground
708 // so let's just simulate user input as that seems to be the most reliable way
709 // some more info: https://gist.github.com/Aetopia/1581b40f00cc0cadc93a0e8ccb65dc8c
710 // bonus: this bug also doesn't manifest if you have vs attached to the process
711 let inputs = [
712 INPUT {
713 r#type: INPUT_KEYBOARD,
714 Anonymous: INPUT_0 {
715 ki: KEYBDINPUT {
716 wVk: VK_MENU,
717 dwFlags: KEYBD_EVENT_FLAGS(0),
718 ..Default::default()
719 },
720 },
721 },
722 INPUT {
723 r#type: INPUT_KEYBOARD,
724 Anonymous: INPUT_0 {
725 ki: KEYBDINPUT {
726 wVk: VK_MENU,
727 dwFlags: KEYEVENTF_KEYUP,
728 ..Default::default()
729 },
730 },
731 },
732 ];
733 unsafe { SendInput(&inputs, std::mem::size_of::<INPUT>() as i32) };
734
735 // todo(windows)
736 // crate `windows 0.56` reports true as Err
737 unsafe { SetForegroundWindow(hwnd).as_bool() };
738 })
739 .detach();
740 }
741
742 fn is_active(&self) -> bool {
743 self.0.hwnd == unsafe { GetActiveWindow() }
744 }
745
746 fn is_hovered(&self) -> bool {
747 self.0.state.borrow().hovered
748 }
749
750 fn set_title(&mut self, title: &str) {
751 unsafe { SetWindowTextW(self.0.hwnd, &HSTRING::from(title)) }
752 .inspect_err(|e| log::error!("Set title failed: {e}"))
753 .ok();
754 }
755
756 fn set_background_appearance(&self, background_appearance: WindowBackgroundAppearance) {
757 let hwnd = self.0.hwnd;
758
759 match background_appearance {
760 WindowBackgroundAppearance::Opaque => {
761 // ACCENT_DISABLED
762 set_window_composition_attribute(hwnd, None, 0);
763 }
764 WindowBackgroundAppearance::Transparent => {
765 // Use ACCENT_ENABLE_TRANSPARENTGRADIENT for transparent background
766 set_window_composition_attribute(hwnd, None, 2);
767 }
768 WindowBackgroundAppearance::Blurred => {
769 // Enable acrylic blur
770 // ACCENT_ENABLE_ACRYLICBLURBEHIND
771 set_window_composition_attribute(hwnd, Some((0, 0, 0, 0)), 4);
772 }
773 }
774 }
775
776 fn minimize(&self) {
777 unsafe { ShowWindowAsync(self.0.hwnd, SW_MINIMIZE).ok().log_err() };
778 }
779
780 fn zoom(&self) {
781 unsafe {
782 if IsWindowVisible(self.0.hwnd).as_bool() {
783 ShowWindowAsync(self.0.hwnd, SW_MAXIMIZE).ok().log_err();
784 } else if let Some(status) = self.0.state.borrow_mut().initial_placement.as_mut() {
785 status.state = WindowOpenState::Maximized;
786 }
787 }
788 }
789
790 fn toggle_fullscreen(&self) {
791 if unsafe { IsWindowVisible(self.0.hwnd).as_bool() } {
792 self.0.toggle_fullscreen();
793 } else if let Some(status) = self.0.state.borrow_mut().initial_placement.as_mut() {
794 status.state = WindowOpenState::Fullscreen;
795 }
796 }
797
798 fn is_fullscreen(&self) -> bool {
799 self.0.state.borrow().is_fullscreen()
800 }
801
802 fn on_request_frame(&self, callback: Box<dyn FnMut(RequestFrameOptions)>) {
803 self.0.state.borrow_mut().callbacks.request_frame = Some(callback);
804 }
805
806 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> DispatchEventResult>) {
807 self.0.state.borrow_mut().callbacks.input = Some(callback);
808 }
809
810 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
811 self.0.state.borrow_mut().callbacks.active_status_change = Some(callback);
812 }
813
814 fn on_hover_status_change(&self, callback: Box<dyn FnMut(bool)>) {
815 self.0.state.borrow_mut().callbacks.hovered_status_change = Some(callback);
816 }
817
818 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
819 self.0.state.borrow_mut().callbacks.resize = Some(callback);
820 }
821
822 fn on_moved(&self, callback: Box<dyn FnMut()>) {
823 self.0.state.borrow_mut().callbacks.moved = Some(callback);
824 }
825
826 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
827 self.0.state.borrow_mut().callbacks.should_close = Some(callback);
828 }
829
830 fn on_close(&self, callback: Box<dyn FnOnce()>) {
831 self.0.state.borrow_mut().callbacks.close = Some(callback);
832 }
833
834 fn on_hit_test_window_control(&self, callback: Box<dyn FnMut() -> Option<WindowControlArea>>) {
835 self.0.state.borrow_mut().callbacks.hit_test_window_control = Some(callback);
836 }
837
838 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
839 self.0.state.borrow_mut().callbacks.appearance_changed = Some(callback);
840 }
841
842 fn draw(&self, scene: &Scene) {
843 self.0.state.borrow_mut().renderer.draw(scene).log_err();
844 }
845
846 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
847 self.0.state.borrow().renderer.sprite_atlas()
848 }
849
850 fn get_raw_handle(&self) -> HWND {
851 self.0.hwnd
852 }
853
854 fn gpu_specs(&self) -> Option<GpuSpecs> {
855 self.0.state.borrow().renderer.gpu_specs().log_err()
856 }
857
858 fn update_ime_position(&self, _bounds: Bounds<Pixels>) {
859 // There is no such thing on Windows.
860 }
861}
862
863#[implement(IDropTarget)]
864struct WindowsDragDropHandler(pub Rc<WindowsWindowInner>);
865
866impl WindowsDragDropHandler {
867 fn handle_drag_drop(&self, input: PlatformInput) {
868 let mut lock = self.0.state.borrow_mut();
869 if let Some(mut func) = lock.callbacks.input.take() {
870 drop(lock);
871 func(input);
872 self.0.state.borrow_mut().callbacks.input = Some(func);
873 }
874 }
875}
876
877#[allow(non_snake_case)]
878impl IDropTarget_Impl for WindowsDragDropHandler_Impl {
879 fn DragEnter(
880 &self,
881 pdataobj: windows::core::Ref<IDataObject>,
882 _grfkeystate: MODIFIERKEYS_FLAGS,
883 pt: &POINTL,
884 pdweffect: *mut DROPEFFECT,
885 ) -> windows::core::Result<()> {
886 unsafe {
887 let idata_obj = pdataobj.ok()?;
888 let config = FORMATETC {
889 cfFormat: CF_HDROP.0,
890 ptd: std::ptr::null_mut() as _,
891 dwAspect: DVASPECT_CONTENT.0,
892 lindex: -1,
893 tymed: TYMED_HGLOBAL.0 as _,
894 };
895 let cursor_position = POINT { x: pt.x, y: pt.y };
896 if idata_obj.QueryGetData(&config as _) == S_OK {
897 *pdweffect = DROPEFFECT_COPY;
898 let Some(mut idata) = idata_obj.GetData(&config as _).log_err() else {
899 return Ok(());
900 };
901 if idata.u.hGlobal.is_invalid() {
902 return Ok(());
903 }
904 let hdrop = HDROP(idata.u.hGlobal.0);
905 let mut paths = SmallVec::<[PathBuf; 2]>::new();
906 with_file_names(hdrop, |file_name| {
907 if let Some(path) = PathBuf::from_str(&file_name).log_err() {
908 paths.push(path);
909 }
910 });
911 ReleaseStgMedium(&mut idata);
912 let mut cursor_position = cursor_position;
913 ScreenToClient(self.0.hwnd, &mut cursor_position)
914 .ok()
915 .log_err();
916 let scale_factor = self.0.state.borrow().scale_factor;
917 let input = PlatformInput::FileDrop(FileDropEvent::Entered {
918 position: logical_point(
919 cursor_position.x as f32,
920 cursor_position.y as f32,
921 scale_factor,
922 ),
923 paths: ExternalPaths(paths),
924 });
925 self.handle_drag_drop(input);
926 } else {
927 *pdweffect = DROPEFFECT_NONE;
928 }
929 self.0
930 .drop_target_helper
931 .DragEnter(self.0.hwnd, idata_obj, &cursor_position, *pdweffect)
932 .log_err();
933 }
934 Ok(())
935 }
936
937 fn DragOver(
938 &self,
939 _grfkeystate: MODIFIERKEYS_FLAGS,
940 pt: &POINTL,
941 pdweffect: *mut DROPEFFECT,
942 ) -> windows::core::Result<()> {
943 let mut cursor_position = POINT { x: pt.x, y: pt.y };
944 unsafe {
945 *pdweffect = DROPEFFECT_COPY;
946 self.0
947 .drop_target_helper
948 .DragOver(&cursor_position, *pdweffect)
949 .log_err();
950 ScreenToClient(self.0.hwnd, &mut cursor_position)
951 .ok()
952 .log_err();
953 }
954 let scale_factor = self.0.state.borrow().scale_factor;
955 let input = PlatformInput::FileDrop(FileDropEvent::Pending {
956 position: logical_point(
957 cursor_position.x as f32,
958 cursor_position.y as f32,
959 scale_factor,
960 ),
961 });
962 self.handle_drag_drop(input);
963
964 Ok(())
965 }
966
967 fn DragLeave(&self) -> windows::core::Result<()> {
968 unsafe {
969 self.0.drop_target_helper.DragLeave().log_err();
970 }
971 let input = PlatformInput::FileDrop(FileDropEvent::Exited);
972 self.handle_drag_drop(input);
973
974 Ok(())
975 }
976
977 fn Drop(
978 &self,
979 pdataobj: windows::core::Ref<IDataObject>,
980 _grfkeystate: MODIFIERKEYS_FLAGS,
981 pt: &POINTL,
982 pdweffect: *mut DROPEFFECT,
983 ) -> windows::core::Result<()> {
984 let idata_obj = pdataobj.ok()?;
985 let mut cursor_position = POINT { x: pt.x, y: pt.y };
986 unsafe {
987 *pdweffect = DROPEFFECT_COPY;
988 self.0
989 .drop_target_helper
990 .Drop(idata_obj, &cursor_position, *pdweffect)
991 .log_err();
992 ScreenToClient(self.0.hwnd, &mut cursor_position)
993 .ok()
994 .log_err();
995 }
996 let scale_factor = self.0.state.borrow().scale_factor;
997 let input = PlatformInput::FileDrop(FileDropEvent::Submit {
998 position: logical_point(
999 cursor_position.x as f32,
1000 cursor_position.y as f32,
1001 scale_factor,
1002 ),
1003 });
1004 self.handle_drag_drop(input);
1005
1006 Ok(())
1007 }
1008}
1009
1010#[derive(Debug, Clone, Copy)]
1011pub(crate) struct ClickState {
1012 button: MouseButton,
1013 last_click: Instant,
1014 last_position: Point<DevicePixels>,
1015 double_click_spatial_tolerance_width: i32,
1016 double_click_spatial_tolerance_height: i32,
1017 double_click_interval: Duration,
1018 pub(crate) current_count: usize,
1019}
1020
1021impl ClickState {
1022 pub fn new() -> Self {
1023 let double_click_spatial_tolerance_width = unsafe { GetSystemMetrics(SM_CXDOUBLECLK) };
1024 let double_click_spatial_tolerance_height = unsafe { GetSystemMetrics(SM_CYDOUBLECLK) };
1025 let double_click_interval = Duration::from_millis(unsafe { GetDoubleClickTime() } as u64);
1026
1027 ClickState {
1028 button: MouseButton::Left,
1029 last_click: Instant::now(),
1030 last_position: Point::default(),
1031 double_click_spatial_tolerance_width,
1032 double_click_spatial_tolerance_height,
1033 double_click_interval,
1034 current_count: 0,
1035 }
1036 }
1037
1038 /// update self and return the needed click count
1039 pub fn update(&mut self, button: MouseButton, new_position: Point<DevicePixels>) -> usize {
1040 if self.button == button && self.is_double_click(new_position) {
1041 self.current_count += 1;
1042 } else {
1043 self.current_count = 1;
1044 }
1045 self.last_click = Instant::now();
1046 self.last_position = new_position;
1047 self.button = button;
1048
1049 self.current_count
1050 }
1051
1052 pub fn system_update(&mut self, wparam: usize) {
1053 match wparam {
1054 // SPI_SETDOUBLECLKWIDTH
1055 29 => {
1056 self.double_click_spatial_tolerance_width =
1057 unsafe { GetSystemMetrics(SM_CXDOUBLECLK) }
1058 }
1059 // SPI_SETDOUBLECLKHEIGHT
1060 30 => {
1061 self.double_click_spatial_tolerance_height =
1062 unsafe { GetSystemMetrics(SM_CYDOUBLECLK) }
1063 }
1064 // SPI_SETDOUBLECLICKTIME
1065 32 => {
1066 self.double_click_interval =
1067 Duration::from_millis(unsafe { GetDoubleClickTime() } as u64)
1068 }
1069 _ => {}
1070 }
1071 }
1072
1073 #[inline]
1074 fn is_double_click(&self, new_position: Point<DevicePixels>) -> bool {
1075 let diff = self.last_position - new_position;
1076
1077 self.last_click.elapsed() < self.double_click_interval
1078 && diff.x.0.abs() <= self.double_click_spatial_tolerance_width
1079 && diff.y.0.abs() <= self.double_click_spatial_tolerance_height
1080 }
1081}
1082
1083struct StyleAndBounds {
1084 style: WINDOW_STYLE,
1085 x: i32,
1086 y: i32,
1087 cx: i32,
1088 cy: i32,
1089}
1090
1091#[repr(C)]
1092struct WINDOWCOMPOSITIONATTRIBDATA {
1093 attrib: u32,
1094 pv_data: *mut std::ffi::c_void,
1095 cb_data: usize,
1096}
1097
1098#[repr(C)]
1099struct AccentPolicy {
1100 accent_state: u32,
1101 accent_flags: u32,
1102 gradient_color: u32,
1103 animation_id: u32,
1104}
1105
1106type Color = (u8, u8, u8, u8);
1107
1108#[derive(Debug, Default, Clone, Copy)]
1109pub(crate) struct WindowBorderOffset {
1110 pub(crate) width_offset: i32,
1111 pub(crate) height_offset: i32,
1112}
1113
1114impl WindowBorderOffset {
1115 pub(crate) fn update(&mut self, hwnd: HWND) -> anyhow::Result<()> {
1116 let window_rect = unsafe {
1117 let mut rect = std::mem::zeroed();
1118 GetWindowRect(hwnd, &mut rect)?;
1119 rect
1120 };
1121 let client_rect = unsafe {
1122 let mut rect = std::mem::zeroed();
1123 GetClientRect(hwnd, &mut rect)?;
1124 rect
1125 };
1126 self.width_offset =
1127 (window_rect.right - window_rect.left) - (client_rect.right - client_rect.left);
1128 self.height_offset =
1129 (window_rect.bottom - window_rect.top) - (client_rect.bottom - client_rect.top);
1130 Ok(())
1131 }
1132}
1133
1134struct WindowOpenStatus {
1135 placement: WINDOWPLACEMENT,
1136 state: WindowOpenState,
1137}
1138
1139enum WindowOpenState {
1140 Maximized,
1141 Fullscreen,
1142 Windowed,
1143}
1144
1145const WINDOW_CLASS_NAME: PCWSTR = w!("Zed::Window");
1146
1147fn register_window_class(icon_handle: HICON) {
1148 static ONCE: Once = Once::new();
1149 ONCE.call_once(|| {
1150 let wc = WNDCLASSW {
1151 lpfnWndProc: Some(window_procedure),
1152 hIcon: icon_handle,
1153 lpszClassName: PCWSTR(WINDOW_CLASS_NAME.as_ptr()),
1154 style: CS_HREDRAW | CS_VREDRAW,
1155 hInstance: get_module_handle().into(),
1156 hbrBackground: unsafe { CreateSolidBrush(COLORREF(0x00000000)) },
1157 ..Default::default()
1158 };
1159 unsafe { RegisterClassW(&wc) };
1160 });
1161}
1162
1163unsafe extern "system" fn window_procedure(
1164 hwnd: HWND,
1165 msg: u32,
1166 wparam: WPARAM,
1167 lparam: LPARAM,
1168) -> LRESULT {
1169 if msg == WM_NCCREATE {
1170 let window_params = lparam.0 as *const CREATESTRUCTW;
1171 let window_params = unsafe { &*window_params };
1172 let window_creation_context = window_params.lpCreateParams as *mut WindowCreateContext;
1173 let window_creation_context = unsafe { &mut *window_creation_context };
1174 return match WindowsWindowInner::new(window_creation_context, hwnd, window_params) {
1175 Ok(window_state) => {
1176 let weak = Box::new(Rc::downgrade(&window_state));
1177 unsafe { set_window_long(hwnd, GWLP_USERDATA, Box::into_raw(weak) as isize) };
1178 window_creation_context.inner = Some(Ok(window_state));
1179 unsafe { DefWindowProcW(hwnd, msg, wparam, lparam) }
1180 }
1181 Err(error) => {
1182 window_creation_context.inner = Some(Err(error));
1183 LRESULT(0)
1184 }
1185 };
1186 }
1187
1188 let ptr = unsafe { get_window_long(hwnd, GWLP_USERDATA) } as *mut Weak<WindowsWindowInner>;
1189 if ptr.is_null() {
1190 return unsafe { DefWindowProcW(hwnd, msg, wparam, lparam) };
1191 }
1192 let inner = unsafe { &*ptr };
1193 let result = if let Some(inner) = inner.upgrade() {
1194 inner.handle_msg(hwnd, msg, wparam, lparam)
1195 } else {
1196 unsafe { DefWindowProcW(hwnd, msg, wparam, lparam) }
1197 };
1198
1199 if msg == WM_NCDESTROY {
1200 unsafe { set_window_long(hwnd, GWLP_USERDATA, 0) };
1201 unsafe { drop(Box::from_raw(ptr)) };
1202 }
1203
1204 result
1205}
1206
1207pub(crate) fn window_from_hwnd(hwnd: HWND) -> Option<Rc<WindowsWindowInner>> {
1208 if hwnd.is_invalid() {
1209 return None;
1210 }
1211
1212 let ptr = unsafe { get_window_long(hwnd, GWLP_USERDATA) } as *mut Weak<WindowsWindowInner>;
1213 if !ptr.is_null() {
1214 let inner = unsafe { &*ptr };
1215 inner.upgrade()
1216 } else {
1217 None
1218 }
1219}
1220
1221fn get_module_handle() -> HMODULE {
1222 unsafe {
1223 let mut h_module = std::mem::zeroed();
1224 GetModuleHandleExW(
1225 GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
1226 windows::core::w!("ZedModule"),
1227 &mut h_module,
1228 )
1229 .expect("Unable to get module handle"); // this should never fail
1230
1231 h_module
1232 }
1233}
1234
1235fn register_drag_drop(window: &Rc<WindowsWindowInner>) -> Result<()> {
1236 let window_handle = window.hwnd;
1237 let handler = WindowsDragDropHandler(window.clone());
1238 // The lifetime of `IDropTarget` is handled by Windows, it won't release until
1239 // we call `RevokeDragDrop`.
1240 // So, it's safe to drop it here.
1241 let drag_drop_handler: IDropTarget = handler.into();
1242 unsafe {
1243 RegisterDragDrop(window_handle, &drag_drop_handler)
1244 .context("unable to register drag-drop event")?;
1245 }
1246 Ok(())
1247}
1248
1249fn calculate_window_rect(bounds: Bounds<DevicePixels>, border_offset: WindowBorderOffset) -> RECT {
1250 // NOTE:
1251 // The reason we're not using `AdjustWindowRectEx()` here is
1252 // that the size reported by this function is incorrect.
1253 // You can test it, and there are similar discussions online.
1254 // See: https://stackoverflow.com/questions/12423584/how-to-set-exact-client-size-for-overlapped-window-winapi
1255 //
1256 // So we manually calculate these values here.
1257 let mut rect = RECT {
1258 left: bounds.left().0,
1259 top: bounds.top().0,
1260 right: bounds.right().0,
1261 bottom: bounds.bottom().0,
1262 };
1263 let left_offset = border_offset.width_offset / 2;
1264 let top_offset = border_offset.height_offset / 2;
1265 let right_offset = border_offset.width_offset - left_offset;
1266 let bottom_offset = border_offset.height_offset - top_offset;
1267 rect.left -= left_offset;
1268 rect.top -= top_offset;
1269 rect.right += right_offset;
1270 rect.bottom += bottom_offset;
1271 rect
1272}
1273
1274fn calculate_client_rect(
1275 rect: RECT,
1276 border_offset: WindowBorderOffset,
1277 scale_factor: f32,
1278) -> Bounds<Pixels> {
1279 let left_offset = border_offset.width_offset / 2;
1280 let top_offset = border_offset.height_offset / 2;
1281 let right_offset = border_offset.width_offset - left_offset;
1282 let bottom_offset = border_offset.height_offset - top_offset;
1283 let left = rect.left + left_offset;
1284 let top = rect.top + top_offset;
1285 let right = rect.right - right_offset;
1286 let bottom = rect.bottom - bottom_offset;
1287 let physical_size = size(DevicePixels(right - left), DevicePixels(bottom - top));
1288 Bounds {
1289 origin: logical_point(left as f32, top as f32, scale_factor),
1290 size: physical_size.to_pixels(scale_factor),
1291 }
1292}
1293
1294fn retrieve_window_placement(
1295 hwnd: HWND,
1296 display: WindowsDisplay,
1297 initial_bounds: Bounds<Pixels>,
1298 scale_factor: f32,
1299 border_offset: WindowBorderOffset,
1300) -> Result<WINDOWPLACEMENT> {
1301 let mut placement = WINDOWPLACEMENT {
1302 length: std::mem::size_of::<WINDOWPLACEMENT>() as u32,
1303 ..Default::default()
1304 };
1305 unsafe { GetWindowPlacement(hwnd, &mut placement)? };
1306 // the bounds may be not inside the display
1307 let bounds = if display.check_given_bounds(initial_bounds) {
1308 initial_bounds
1309 } else {
1310 display.default_bounds()
1311 };
1312 let bounds = bounds.to_device_pixels(scale_factor);
1313 placement.rcNormalPosition = calculate_window_rect(bounds, border_offset);
1314 Ok(placement)
1315}
1316
1317fn set_window_composition_attribute(hwnd: HWND, color: Option<Color>, state: u32) {
1318 let mut version = unsafe { std::mem::zeroed() };
1319 let status = unsafe { windows::Wdk::System::SystemServices::RtlGetVersion(&mut version) };
1320 if !status.is_ok() || version.dwBuildNumber < 17763 {
1321 return;
1322 }
1323
1324 unsafe {
1325 type SetWindowCompositionAttributeType =
1326 unsafe extern "system" fn(HWND, *mut WINDOWCOMPOSITIONATTRIBDATA) -> BOOL;
1327 let module_name = PCSTR::from_raw(c"user32.dll".as_ptr() as *const u8);
1328 if let Some(user32) = GetModuleHandleA(module_name)
1329 .context("Unable to get user32.dll handle")
1330 .log_err()
1331 {
1332 let func_name = PCSTR::from_raw(c"SetWindowCompositionAttribute".as_ptr() as *const u8);
1333 let set_window_composition_attribute: SetWindowCompositionAttributeType =
1334 std::mem::transmute(GetProcAddress(user32, func_name));
1335 let mut color = color.unwrap_or_default();
1336 let is_acrylic = state == 4;
1337 if is_acrylic && color.3 == 0 {
1338 color.3 = 1;
1339 }
1340 let accent = AccentPolicy {
1341 accent_state: state,
1342 accent_flags: if is_acrylic { 0 } else { 2 },
1343 gradient_color: (color.0 as u32)
1344 | ((color.1 as u32) << 8)
1345 | ((color.2 as u32) << 16)
1346 | ((color.3 as u32) << 24),
1347 animation_id: 0,
1348 };
1349 let mut data = WINDOWCOMPOSITIONATTRIBDATA {
1350 attrib: 0x13,
1351 pv_data: &accent as *const _ as *mut _,
1352 cb_data: std::mem::size_of::<AccentPolicy>(),
1353 };
1354 let _ = set_window_composition_attribute(hwnd, &mut data as *mut _ as _);
1355 }
1356 }
1357}
1358
1359#[cfg(test)]
1360mod tests {
1361 use super::ClickState;
1362 use crate::{DevicePixels, MouseButton, point};
1363 use std::time::Duration;
1364
1365 #[test]
1366 fn test_double_click_interval() {
1367 let mut state = ClickState::new();
1368 assert_eq!(
1369 state.update(MouseButton::Left, point(DevicePixels(0), DevicePixels(0))),
1370 1
1371 );
1372 assert_eq!(
1373 state.update(MouseButton::Right, point(DevicePixels(0), DevicePixels(0))),
1374 1
1375 );
1376 assert_eq!(
1377 state.update(MouseButton::Left, point(DevicePixels(0), DevicePixels(0))),
1378 1
1379 );
1380 assert_eq!(
1381 state.update(MouseButton::Left, point(DevicePixels(0), DevicePixels(0))),
1382 2
1383 );
1384 state.last_click -= Duration::from_millis(700);
1385 assert_eq!(
1386 state.update(MouseButton::Left, point(DevicePixels(0), DevicePixels(0))),
1387 1
1388 );
1389 }
1390
1391 #[test]
1392 fn test_double_click_spatial_tolerance() {
1393 let mut state = ClickState::new();
1394 assert_eq!(
1395 state.update(MouseButton::Left, point(DevicePixels(-3), DevicePixels(0))),
1396 1
1397 );
1398 assert_eq!(
1399 state.update(MouseButton::Left, point(DevicePixels(0), DevicePixels(3))),
1400 2
1401 );
1402 assert_eq!(
1403 state.update(MouseButton::Right, point(DevicePixels(3), DevicePixels(2))),
1404 1
1405 );
1406 assert_eq!(
1407 state.update(MouseButton::Right, point(DevicePixels(10), DevicePixels(0))),
1408 1
1409 );
1410 }
1411}