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 drop_target_helper: IDropTargetHelper,
65 pub(crate) state: RefCell<WindowsWindowState>,
66 pub(crate) system_settings: RefCell<WindowsSystemSettings>,
67 pub(crate) handle: AnyWindowHandle,
68 pub(crate) hide_title_bar: bool,
69 pub(crate) is_movable: bool,
70 pub(crate) executor: ForegroundExecutor,
71 pub(crate) windows_version: WindowsVersion,
72 pub(crate) validation_number: usize,
73 pub(crate) main_receiver: flume::Receiver<Runnable>,
74 pub(crate) platform_window_handle: HWND,
75}
76
77impl WindowsWindowState {
78 fn new(
79 hwnd: HWND,
80 directx_devices: &DirectXDevices,
81 window_params: &CREATESTRUCTW,
82 current_cursor: Option<HCURSOR>,
83 display: WindowsDisplay,
84 min_size: Option<Size<Pixels>>,
85 appearance: WindowAppearance,
86 disable_direct_composition: bool,
87 ) -> Result<Self> {
88 let scale_factor = {
89 let monitor_dpi = unsafe { GetDpiForWindow(hwnd) } as f32;
90 monitor_dpi / USER_DEFAULT_SCREEN_DPI as f32
91 };
92 let origin = logical_point(window_params.x as f32, window_params.y as f32, scale_factor);
93 let logical_size = {
94 let physical_size = size(
95 DevicePixels(window_params.cx),
96 DevicePixels(window_params.cy),
97 );
98 physical_size.to_pixels(scale_factor)
99 };
100 let fullscreen_restore_bounds = Bounds {
101 origin,
102 size: logical_size,
103 };
104 let border_offset = WindowBorderOffset::default();
105 let restore_from_minimized = None;
106 let renderer = DirectXRenderer::new(hwnd, directx_devices, disable_direct_composition)
107 .context("Creating DirectX renderer")?;
108 let callbacks = Callbacks::default();
109 let input_handler = None;
110 let pending_surrogate = None;
111 let last_reported_modifiers = None;
112 let last_reported_capslock = None;
113 let hovered = false;
114 let click_state = ClickState::new();
115 let nc_button_pressed = None;
116 let fullscreen = None;
117 let initial_placement = None;
118
119 Ok(Self {
120 origin,
121 logical_size,
122 fullscreen_restore_bounds,
123 border_offset,
124 appearance,
125 scale_factor,
126 restore_from_minimized,
127 min_size,
128 callbacks,
129 input_handler,
130 pending_surrogate,
131 last_reported_modifiers,
132 last_reported_capslock,
133 hovered,
134 renderer,
135 click_state,
136 current_cursor,
137 nc_button_pressed,
138 display,
139 fullscreen,
140 initial_placement,
141 hwnd,
142 })
143 }
144
145 #[inline]
146 pub(crate) fn is_fullscreen(&self) -> bool {
147 self.fullscreen.is_some()
148 }
149
150 pub(crate) fn is_maximized(&self) -> bool {
151 !self.is_fullscreen() && unsafe { IsZoomed(self.hwnd) }.as_bool()
152 }
153
154 fn bounds(&self) -> Bounds<Pixels> {
155 Bounds {
156 origin: self.origin,
157 size: self.logical_size,
158 }
159 }
160
161 // Calculate the bounds used for saving and whether the window is maximized.
162 fn calculate_window_bounds(&self) -> (Bounds<Pixels>, bool) {
163 let placement = unsafe {
164 let mut placement = WINDOWPLACEMENT {
165 length: std::mem::size_of::<WINDOWPLACEMENT>() as u32,
166 ..Default::default()
167 };
168 GetWindowPlacement(self.hwnd, &mut placement)
169 .context("failed to get window placement")
170 .log_err();
171 placement
172 };
173 (
174 calculate_client_rect(
175 placement.rcNormalPosition,
176 self.border_offset,
177 self.scale_factor,
178 ),
179 placement.showCmd == SW_SHOWMAXIMIZED.0 as u32,
180 )
181 }
182
183 fn window_bounds(&self) -> WindowBounds {
184 let (bounds, maximized) = self.calculate_window_bounds();
185
186 if self.is_fullscreen() {
187 WindowBounds::Fullscreen(self.fullscreen_restore_bounds)
188 } else if maximized {
189 WindowBounds::Maximized(bounds)
190 } else {
191 WindowBounds::Windowed(bounds)
192 }
193 }
194
195 /// get the logical size of the app's drawable area.
196 ///
197 /// Currently, GPUI uses the logical size of the app to handle mouse interactions (such as
198 /// whether the mouse collides with other elements of GPUI).
199 fn content_size(&self) -> Size<Pixels> {
200 self.logical_size
201 }
202}
203
204impl WindowsWindowInner {
205 fn new(context: &mut WindowCreateContext, hwnd: HWND, cs: &CREATESTRUCTW) -> Result<Rc<Self>> {
206 let state = RefCell::new(WindowsWindowState::new(
207 hwnd,
208 &context.directx_devices,
209 cs,
210 context.current_cursor,
211 context.display,
212 context.min_size,
213 context.appearance,
214 context.disable_direct_composition,
215 )?);
216
217 Ok(Rc::new(Self {
218 hwnd,
219 drop_target_helper: context.drop_target_helper.clone(),
220 state,
221 handle: context.handle,
222 hide_title_bar: context.hide_title_bar,
223 is_movable: context.is_movable,
224 executor: context.executor.clone(),
225 windows_version: context.windows_version,
226 validation_number: context.validation_number,
227 main_receiver: context.main_receiver.clone(),
228 platform_window_handle: context.platform_window_handle,
229 system_settings: RefCell::new(WindowsSystemSettings::new(context.display)),
230 }))
231 }
232
233 fn toggle_fullscreen(self: &Rc<Self>) {
234 let this = self.clone();
235 self.executor
236 .spawn(async move {
237 let mut lock = this.state.borrow_mut();
238 let StyleAndBounds {
239 style,
240 x,
241 y,
242 cx,
243 cy,
244 } = match lock.fullscreen.take() {
245 Some(state) => state,
246 None => {
247 let (window_bounds, _) = lock.calculate_window_bounds();
248 lock.fullscreen_restore_bounds = window_bounds;
249 drop(lock);
250
251 let style =
252 WINDOW_STYLE(unsafe { get_window_long(this.hwnd, GWL_STYLE) } as _);
253 let mut rc = RECT::default();
254 unsafe { GetWindowRect(this.hwnd, &mut rc) }
255 .context("failed to get window rect")
256 .log_err();
257
258 lock = this.state.borrow_mut();
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 };
282 drop(lock);
283 unsafe { set_window_long(this.hwnd, GWL_STYLE, style.0 as isize) };
284 unsafe {
285 SetWindowPos(
286 this.hwnd,
287 None,
288 x,
289 y,
290 cx,
291 cy,
292 SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOZORDER,
293 )
294 }
295 .log_err();
296 })
297 .detach();
298 }
299
300 fn set_window_placement(self: &Rc<Self>) -> Result<()> {
301 let Some(open_status) = self.state.borrow_mut().initial_placement.take() else {
302 return Ok(());
303 };
304 match open_status.state {
305 WindowOpenState::Maximized => unsafe {
306 SetWindowPlacement(self.hwnd, &open_status.placement)
307 .context("failed to set window placement")?;
308 ShowWindowAsync(self.hwnd, SW_MAXIMIZE).ok()?;
309 },
310 WindowOpenState::Fullscreen => {
311 unsafe {
312 SetWindowPlacement(self.hwnd, &open_status.placement)
313 .context("failed to set window placement")?
314 };
315 self.toggle_fullscreen();
316 }
317 WindowOpenState::Windowed => unsafe {
318 SetWindowPlacement(self.hwnd, &open_status.placement)
319 .context("failed to set window placement")?;
320 },
321 }
322 Ok(())
323 }
324}
325
326#[derive(Default)]
327pub(crate) struct Callbacks {
328 pub(crate) request_frame: Option<Box<dyn FnMut(RequestFrameOptions)>>,
329 pub(crate) input: Option<Box<dyn FnMut(crate::PlatformInput) -> DispatchEventResult>>,
330 pub(crate) active_status_change: Option<Box<dyn FnMut(bool)>>,
331 pub(crate) hovered_status_change: Option<Box<dyn FnMut(bool)>>,
332 pub(crate) resize: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
333 pub(crate) moved: Option<Box<dyn FnMut()>>,
334 pub(crate) should_close: Option<Box<dyn FnMut() -> bool>>,
335 pub(crate) close: Option<Box<dyn FnOnce()>>,
336 pub(crate) hit_test_window_control: Option<Box<dyn FnMut() -> Option<WindowControlArea>>>,
337 pub(crate) appearance_changed: Option<Box<dyn FnMut()>>,
338}
339
340struct WindowCreateContext {
341 inner: Option<Result<Rc<WindowsWindowInner>>>,
342 handle: AnyWindowHandle,
343 hide_title_bar: bool,
344 display: WindowsDisplay,
345 is_movable: bool,
346 min_size: Option<Size<Pixels>>,
347 executor: ForegroundExecutor,
348 current_cursor: Option<HCURSOR>,
349 windows_version: WindowsVersion,
350 drop_target_helper: IDropTargetHelper,
351 validation_number: usize,
352 main_receiver: flume::Receiver<Runnable>,
353 platform_window_handle: HWND,
354 appearance: WindowAppearance,
355 disable_direct_composition: bool,
356 directx_devices: DirectXDevices,
357}
358
359impl WindowsWindow {
360 pub(crate) fn new(
361 handle: AnyWindowHandle,
362 params: WindowParams,
363 creation_info: WindowCreationInfo,
364 ) -> Result<Self> {
365 let WindowCreationInfo {
366 icon,
367 executor,
368 current_cursor,
369 windows_version,
370 drop_target_helper,
371 validation_number,
372 main_receiver,
373 platform_window_handle,
374 disable_direct_composition,
375 directx_devices,
376 } = creation_info;
377 register_window_class(icon);
378 let hide_title_bar = params
379 .titlebar
380 .as_ref()
381 .map(|titlebar| titlebar.appears_transparent)
382 .unwrap_or(true);
383 let window_name = HSTRING::from(
384 params
385 .titlebar
386 .as_ref()
387 .and_then(|titlebar| titlebar.title.as_ref())
388 .map(|title| title.as_ref())
389 .unwrap_or(""),
390 );
391
392 let (mut dwexstyle, dwstyle) = if params.kind == WindowKind::PopUp {
393 (WS_EX_TOOLWINDOW, WINDOW_STYLE(0x0))
394 } else {
395 let mut dwstyle = WS_SYSMENU;
396
397 if params.is_resizable {
398 dwstyle |= WS_THICKFRAME | WS_MAXIMIZEBOX;
399 }
400
401 if params.is_minimizable {
402 dwstyle |= WS_MINIMIZEBOX;
403 }
404
405 (WS_EX_APPWINDOW, dwstyle)
406 };
407 if !disable_direct_composition {
408 dwexstyle |= WS_EX_NOREDIRECTIONBITMAP;
409 }
410
411 let hinstance = get_module_handle();
412 let display = if let Some(display_id) = params.display_id {
413 // if we obtain a display_id, then this ID must be valid.
414 WindowsDisplay::new(display_id).unwrap()
415 } else {
416 WindowsDisplay::primary_monitor().unwrap()
417 };
418 let appearance = system_appearance().unwrap_or_default();
419 let mut context = WindowCreateContext {
420 inner: None,
421 handle,
422 hide_title_bar,
423 display,
424 is_movable: params.is_movable,
425 min_size: params.window_min_size,
426 executor,
427 current_cursor,
428 windows_version,
429 drop_target_helper,
430 validation_number,
431 main_receiver,
432 platform_window_handle,
433 appearance,
434 disable_direct_composition,
435 directx_devices,
436 };
437 let creation_result = unsafe {
438 CreateWindowExW(
439 dwexstyle,
440 WINDOW_CLASS_NAME,
441 &window_name,
442 dwstyle,
443 CW_USEDEFAULT,
444 CW_USEDEFAULT,
445 CW_USEDEFAULT,
446 CW_USEDEFAULT,
447 None,
448 None,
449 Some(hinstance.into()),
450 Some(&context as *const _ as *const _),
451 )
452 };
453
454 // Failure to create a `WindowsWindowState` can cause window creation to fail,
455 // so check the inner result first.
456 let this = context.inner.take().unwrap()?;
457 let hwnd = creation_result?;
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 = unsafe { &*(lparam.0 as *const CREATESTRUCTW) };
1171 let window_creation_context = window_params.lpCreateParams as *mut WindowCreateContext;
1172 let window_creation_context = unsafe { &mut *window_creation_context };
1173 return match WindowsWindowInner::new(window_creation_context, hwnd, window_params) {
1174 Ok(window_state) => {
1175 let weak = Box::new(Rc::downgrade(&window_state));
1176 unsafe { set_window_long(hwnd, GWLP_USERDATA, Box::into_raw(weak) as isize) };
1177 window_creation_context.inner = Some(Ok(window_state));
1178 unsafe { DefWindowProcW(hwnd, msg, wparam, lparam) }
1179 }
1180 Err(error) => {
1181 window_creation_context.inner = Some(Err(error));
1182 LRESULT(0)
1183 }
1184 };
1185 }
1186
1187 let ptr = unsafe { get_window_long(hwnd, GWLP_USERDATA) } as *mut Weak<WindowsWindowInner>;
1188 if ptr.is_null() {
1189 return unsafe { DefWindowProcW(hwnd, msg, wparam, lparam) };
1190 }
1191 let inner = unsafe { &*ptr };
1192 let result = if let Some(inner) = inner.upgrade() {
1193 inner.handle_msg(hwnd, msg, wparam, lparam)
1194 } else {
1195 unsafe { DefWindowProcW(hwnd, msg, wparam, lparam) }
1196 };
1197
1198 if msg == WM_NCDESTROY {
1199 unsafe { set_window_long(hwnd, GWLP_USERDATA, 0) };
1200 unsafe { drop(Box::from_raw(ptr)) };
1201 }
1202
1203 result
1204}
1205
1206pub(crate) fn window_from_hwnd(hwnd: HWND) -> Option<Rc<WindowsWindowInner>> {
1207 if hwnd.is_invalid() {
1208 return None;
1209 }
1210
1211 let ptr = unsafe { get_window_long(hwnd, GWLP_USERDATA) } as *mut Weak<WindowsWindowInner>;
1212 if !ptr.is_null() {
1213 let inner = unsafe { &*ptr };
1214 inner.upgrade()
1215 } else {
1216 None
1217 }
1218}
1219
1220fn get_module_handle() -> HMODULE {
1221 unsafe {
1222 let mut h_module = std::mem::zeroed();
1223 GetModuleHandleExW(
1224 GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
1225 windows::core::w!("ZedModule"),
1226 &mut h_module,
1227 )
1228 .expect("Unable to get module handle"); // this should never fail
1229
1230 h_module
1231 }
1232}
1233
1234fn register_drag_drop(window: &Rc<WindowsWindowInner>) -> Result<()> {
1235 let window_handle = window.hwnd;
1236 let handler = WindowsDragDropHandler(window.clone());
1237 // The lifetime of `IDropTarget` is handled by Windows, it won't release until
1238 // we call `RevokeDragDrop`.
1239 // So, it's safe to drop it here.
1240 let drag_drop_handler: IDropTarget = handler.into();
1241 unsafe {
1242 RegisterDragDrop(window_handle, &drag_drop_handler)
1243 .context("unable to register drag-drop event")?;
1244 }
1245 Ok(())
1246}
1247
1248fn calculate_window_rect(bounds: Bounds<DevicePixels>, border_offset: WindowBorderOffset) -> RECT {
1249 // NOTE:
1250 // The reason we're not using `AdjustWindowRectEx()` here is
1251 // that the size reported by this function is incorrect.
1252 // You can test it, and there are similar discussions online.
1253 // See: https://stackoverflow.com/questions/12423584/how-to-set-exact-client-size-for-overlapped-window-winapi
1254 //
1255 // So we manually calculate these values here.
1256 let mut rect = RECT {
1257 left: bounds.left().0,
1258 top: bounds.top().0,
1259 right: bounds.right().0,
1260 bottom: bounds.bottom().0,
1261 };
1262 let left_offset = border_offset.width_offset / 2;
1263 let top_offset = border_offset.height_offset / 2;
1264 let right_offset = border_offset.width_offset - left_offset;
1265 let bottom_offset = border_offset.height_offset - top_offset;
1266 rect.left -= left_offset;
1267 rect.top -= top_offset;
1268 rect.right += right_offset;
1269 rect.bottom += bottom_offset;
1270 rect
1271}
1272
1273fn calculate_client_rect(
1274 rect: RECT,
1275 border_offset: WindowBorderOffset,
1276 scale_factor: f32,
1277) -> Bounds<Pixels> {
1278 let left_offset = border_offset.width_offset / 2;
1279 let top_offset = border_offset.height_offset / 2;
1280 let right_offset = border_offset.width_offset - left_offset;
1281 let bottom_offset = border_offset.height_offset - top_offset;
1282 let left = rect.left + left_offset;
1283 let top = rect.top + top_offset;
1284 let right = rect.right - right_offset;
1285 let bottom = rect.bottom - bottom_offset;
1286 let physical_size = size(DevicePixels(right - left), DevicePixels(bottom - top));
1287 Bounds {
1288 origin: logical_point(left as f32, top as f32, scale_factor),
1289 size: physical_size.to_pixels(scale_factor),
1290 }
1291}
1292
1293fn retrieve_window_placement(
1294 hwnd: HWND,
1295 display: WindowsDisplay,
1296 initial_bounds: Bounds<Pixels>,
1297 scale_factor: f32,
1298 border_offset: WindowBorderOffset,
1299) -> Result<WINDOWPLACEMENT> {
1300 let mut placement = WINDOWPLACEMENT {
1301 length: std::mem::size_of::<WINDOWPLACEMENT>() as u32,
1302 ..Default::default()
1303 };
1304 unsafe { GetWindowPlacement(hwnd, &mut placement)? };
1305 // the bounds may be not inside the display
1306 let bounds = if display.check_given_bounds(initial_bounds) {
1307 initial_bounds
1308 } else {
1309 display.default_bounds()
1310 };
1311 let bounds = bounds.to_device_pixels(scale_factor);
1312 placement.rcNormalPosition = calculate_window_rect(bounds, border_offset);
1313 Ok(placement)
1314}
1315
1316fn set_window_composition_attribute(hwnd: HWND, color: Option<Color>, state: u32) {
1317 let mut version = unsafe { std::mem::zeroed() };
1318 let status = unsafe { windows::Wdk::System::SystemServices::RtlGetVersion(&mut version) };
1319 if !status.is_ok() || version.dwBuildNumber < 17763 {
1320 return;
1321 }
1322
1323 unsafe {
1324 type SetWindowCompositionAttributeType =
1325 unsafe extern "system" fn(HWND, *mut WINDOWCOMPOSITIONATTRIBDATA) -> BOOL;
1326 let module_name = PCSTR::from_raw(c"user32.dll".as_ptr() as *const u8);
1327 if let Some(user32) = GetModuleHandleA(module_name)
1328 .context("Unable to get user32.dll handle")
1329 .log_err()
1330 {
1331 let func_name = PCSTR::from_raw(c"SetWindowCompositionAttribute".as_ptr() as *const u8);
1332 let set_window_composition_attribute: SetWindowCompositionAttributeType =
1333 std::mem::transmute(GetProcAddress(user32, func_name));
1334 let mut color = color.unwrap_or_default();
1335 let is_acrylic = state == 4;
1336 if is_acrylic && color.3 == 0 {
1337 color.3 = 1;
1338 }
1339 let accent = AccentPolicy {
1340 accent_state: state,
1341 accent_flags: if is_acrylic { 0 } else { 2 },
1342 gradient_color: (color.0 as u32)
1343 | ((color.1 as u32) << 8)
1344 | ((color.2 as u32) << 16)
1345 | ((color.3 as u32) << 24),
1346 animation_id: 0,
1347 };
1348 let mut data = WINDOWCOMPOSITIONATTRIBDATA {
1349 attrib: 0x13,
1350 pv_data: &accent as *const _ as *mut _,
1351 cb_data: std::mem::size_of::<AccentPolicy>(),
1352 };
1353 let _ = set_window_composition_attribute(hwnd, &mut data as *mut _ as _);
1354 }
1355 }
1356}
1357
1358#[cfg(test)]
1359mod tests {
1360 use super::ClickState;
1361 use crate::{DevicePixels, MouseButton, point};
1362 use std::time::Duration;
1363
1364 #[test]
1365 fn test_double_click_interval() {
1366 let mut state = ClickState::new();
1367 assert_eq!(
1368 state.update(MouseButton::Left, point(DevicePixels(0), DevicePixels(0))),
1369 1
1370 );
1371 assert_eq!(
1372 state.update(MouseButton::Right, point(DevicePixels(0), DevicePixels(0))),
1373 1
1374 );
1375 assert_eq!(
1376 state.update(MouseButton::Left, point(DevicePixels(0), DevicePixels(0))),
1377 1
1378 );
1379 assert_eq!(
1380 state.update(MouseButton::Left, point(DevicePixels(0), DevicePixels(0))),
1381 2
1382 );
1383 state.last_click -= Duration::from_millis(700);
1384 assert_eq!(
1385 state.update(MouseButton::Left, point(DevicePixels(0), DevicePixels(0))),
1386 1
1387 );
1388 }
1389
1390 #[test]
1391 fn test_double_click_spatial_tolerance() {
1392 let mut state = ClickState::new();
1393 assert_eq!(
1394 state.update(MouseButton::Left, point(DevicePixels(-3), DevicePixels(0))),
1395 1
1396 );
1397 assert_eq!(
1398 state.update(MouseButton::Left, point(DevicePixels(0), DevicePixels(3))),
1399 2
1400 );
1401 assert_eq!(
1402 state.update(MouseButton::Right, point(DevicePixels(3), DevicePixels(2))),
1403 1
1404 );
1405 assert_eq!(
1406 state.update(MouseButton::Right, point(DevicePixels(10), DevicePixels(0))),
1407 1
1408 );
1409 }
1410}