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().transpose()?;
457 let hwnd = creation_result?;
458 let this = this.unwrap();
459
460 register_drag_drop(&this)?;
461 configure_dwm_dark_mode(hwnd, appearance);
462 this.state.borrow_mut().border_offset.update(hwnd)?;
463 let placement = retrieve_window_placement(
464 hwnd,
465 display,
466 params.bounds,
467 this.state.borrow().scale_factor,
468 this.state.borrow().border_offset,
469 )?;
470 if params.show {
471 unsafe { SetWindowPlacement(hwnd, &placement)? };
472 } else {
473 this.state.borrow_mut().initial_placement = Some(WindowOpenStatus {
474 placement,
475 state: WindowOpenState::Windowed,
476 });
477 }
478
479 Ok(Self(this))
480 }
481}
482
483impl rwh::HasWindowHandle for WindowsWindow {
484 fn window_handle(&self) -> std::result::Result<rwh::WindowHandle<'_>, rwh::HandleError> {
485 let raw = rwh::Win32WindowHandle::new(unsafe {
486 NonZeroIsize::new_unchecked(self.0.hwnd.0 as isize)
487 })
488 .into();
489 Ok(unsafe { rwh::WindowHandle::borrow_raw(raw) })
490 }
491}
492
493// todo(windows)
494impl rwh::HasDisplayHandle for WindowsWindow {
495 fn display_handle(&self) -> std::result::Result<rwh::DisplayHandle<'_>, rwh::HandleError> {
496 unimplemented!()
497 }
498}
499
500impl Drop for WindowsWindow {
501 fn drop(&mut self) {
502 // clone this `Rc` to prevent early release of the pointer
503 let this = self.0.clone();
504 self.0
505 .executor
506 .spawn(async move {
507 let handle = this.hwnd;
508 unsafe {
509 RevokeDragDrop(handle).log_err();
510 DestroyWindow(handle).log_err();
511 }
512 })
513 .detach();
514 }
515}
516
517impl PlatformWindow for WindowsWindow {
518 fn bounds(&self) -> Bounds<Pixels> {
519 self.0.state.borrow().bounds()
520 }
521
522 fn is_maximized(&self) -> bool {
523 self.0.state.borrow().is_maximized()
524 }
525
526 fn window_bounds(&self) -> WindowBounds {
527 self.0.state.borrow().window_bounds()
528 }
529
530 /// get the logical size of the app's drawable area.
531 ///
532 /// Currently, GPUI uses the logical size of the app to handle mouse interactions (such as
533 /// whether the mouse collides with other elements of GPUI).
534 fn content_size(&self) -> Size<Pixels> {
535 self.0.state.borrow().content_size()
536 }
537
538 fn resize(&mut self, size: Size<Pixels>) {
539 let hwnd = self.0.hwnd;
540 let bounds =
541 crate::bounds(self.bounds().origin, size).to_device_pixels(self.scale_factor());
542 let rect = calculate_window_rect(bounds, self.0.state.borrow().border_offset);
543
544 self.0
545 .executor
546 .spawn(async move {
547 unsafe {
548 SetWindowPos(
549 hwnd,
550 None,
551 bounds.origin.x.0,
552 bounds.origin.y.0,
553 rect.right - rect.left,
554 rect.bottom - rect.top,
555 SWP_NOMOVE,
556 )
557 .context("unable to set window content size")
558 .log_err();
559 }
560 })
561 .detach();
562 }
563
564 fn scale_factor(&self) -> f32 {
565 self.0.state.borrow().scale_factor
566 }
567
568 fn appearance(&self) -> WindowAppearance {
569 self.0.state.borrow().appearance
570 }
571
572 fn display(&self) -> Option<Rc<dyn PlatformDisplay>> {
573 Some(Rc::new(self.0.state.borrow().display))
574 }
575
576 fn mouse_position(&self) -> Point<Pixels> {
577 let scale_factor = self.scale_factor();
578 let point = unsafe {
579 let mut point: POINT = std::mem::zeroed();
580 GetCursorPos(&mut point)
581 .context("unable to get cursor position")
582 .log_err();
583 ScreenToClient(self.0.hwnd, &mut point).ok().log_err();
584 point
585 };
586 logical_point(point.x as f32, point.y as f32, scale_factor)
587 }
588
589 fn modifiers(&self) -> Modifiers {
590 current_modifiers()
591 }
592
593 fn capslock(&self) -> Capslock {
594 current_capslock()
595 }
596
597 fn set_input_handler(&mut self, input_handler: PlatformInputHandler) {
598 self.0.state.borrow_mut().input_handler = Some(input_handler);
599 }
600
601 fn take_input_handler(&mut self) -> Option<PlatformInputHandler> {
602 self.0.state.borrow_mut().input_handler.take()
603 }
604
605 fn prompt(
606 &self,
607 level: PromptLevel,
608 msg: &str,
609 detail: Option<&str>,
610 answers: &[PromptButton],
611 ) -> Option<Receiver<usize>> {
612 let (done_tx, done_rx) = oneshot::channel();
613 let msg = msg.to_string();
614 let detail_string = detail.map(|detail| detail.to_string());
615 let handle = self.0.hwnd;
616 let answers = answers.to_vec();
617 self.0
618 .executor
619 .spawn(async move {
620 unsafe {
621 let mut config = TASKDIALOGCONFIG::default();
622 config.cbSize = std::mem::size_of::<TASKDIALOGCONFIG>() as _;
623 config.hwndParent = handle;
624 let title;
625 let main_icon;
626 match level {
627 crate::PromptLevel::Info => {
628 title = windows::core::w!("Info");
629 main_icon = TD_INFORMATION_ICON;
630 }
631 crate::PromptLevel::Warning => {
632 title = windows::core::w!("Warning");
633 main_icon = TD_WARNING_ICON;
634 }
635 crate::PromptLevel::Critical => {
636 title = windows::core::w!("Critical");
637 main_icon = TD_ERROR_ICON;
638 }
639 };
640 config.pszWindowTitle = title;
641 config.Anonymous1.pszMainIcon = main_icon;
642 let instruction = HSTRING::from(msg);
643 config.pszMainInstruction = PCWSTR::from_raw(instruction.as_ptr());
644 let hints_encoded;
645 if let Some(ref hints) = detail_string {
646 hints_encoded = HSTRING::from(hints);
647 config.pszContent = PCWSTR::from_raw(hints_encoded.as_ptr());
648 };
649 let mut button_id_map = Vec::with_capacity(answers.len());
650 let mut buttons = Vec::new();
651 let mut btn_encoded = Vec::new();
652 for (index, btn) in answers.iter().enumerate() {
653 let encoded = HSTRING::from(btn.label().as_ref());
654 let button_id = match btn {
655 PromptButton::Ok(_) => IDOK.0,
656 PromptButton::Cancel(_) => IDCANCEL.0,
657 // the first few low integer values are reserved for known buttons
658 // so for simplicity we just go backwards from -1
659 PromptButton::Other(_) => -(index as i32) - 1,
660 };
661 button_id_map.push(button_id);
662 buttons.push(TASKDIALOG_BUTTON {
663 nButtonID: button_id,
664 pszButtonText: PCWSTR::from_raw(encoded.as_ptr()),
665 });
666 btn_encoded.push(encoded);
667 }
668 config.cButtons = buttons.len() as _;
669 config.pButtons = buttons.as_ptr();
670
671 config.pfCallback = None;
672 let mut res = std::mem::zeroed();
673 let _ = TaskDialogIndirect(&config, Some(&mut res), None, None)
674 .context("unable to create task dialog")
675 .log_err();
676
677 if let Some(clicked) =
678 button_id_map.iter().position(|&button_id| button_id == res)
679 {
680 let _ = done_tx.send(clicked);
681 }
682 }
683 })
684 .detach();
685
686 Some(done_rx)
687 }
688
689 fn activate(&self) {
690 let hwnd = self.0.hwnd;
691 let this = self.0.clone();
692 self.0
693 .executor
694 .spawn(async move {
695 this.set_window_placement().log_err();
696
697 unsafe {
698 // If the window is minimized, restore it.
699 if IsIconic(hwnd).as_bool() {
700 ShowWindowAsync(hwnd, SW_RESTORE).ok().log_err();
701 }
702
703 SetActiveWindow(hwnd).log_err();
704 SetFocus(Some(hwnd)).log_err();
705 }
706
707 // premium ragebait by windows, this is needed because the window
708 // must have received an input event to be able to set itself to foreground
709 // so let's just simulate user input as that seems to be the most reliable way
710 // some more info: https://gist.github.com/Aetopia/1581b40f00cc0cadc93a0e8ccb65dc8c
711 // bonus: this bug also doesn't manifest if you have vs attached to the process
712 let inputs = [
713 INPUT {
714 r#type: INPUT_KEYBOARD,
715 Anonymous: INPUT_0 {
716 ki: KEYBDINPUT {
717 wVk: VK_MENU,
718 dwFlags: KEYBD_EVENT_FLAGS(0),
719 ..Default::default()
720 },
721 },
722 },
723 INPUT {
724 r#type: INPUT_KEYBOARD,
725 Anonymous: INPUT_0 {
726 ki: KEYBDINPUT {
727 wVk: VK_MENU,
728 dwFlags: KEYEVENTF_KEYUP,
729 ..Default::default()
730 },
731 },
732 },
733 ];
734 unsafe { SendInput(&inputs, std::mem::size_of::<INPUT>() as i32) };
735
736 // todo(windows)
737 // crate `windows 0.56` reports true as Err
738 unsafe { SetForegroundWindow(hwnd).as_bool() };
739 })
740 .detach();
741 }
742
743 fn is_active(&self) -> bool {
744 self.0.hwnd == unsafe { GetActiveWindow() }
745 }
746
747 fn is_hovered(&self) -> bool {
748 self.0.state.borrow().hovered
749 }
750
751 fn set_title(&mut self, title: &str) {
752 unsafe { SetWindowTextW(self.0.hwnd, &HSTRING::from(title)) }
753 .inspect_err(|e| log::error!("Set title failed: {e}"))
754 .ok();
755 }
756
757 fn set_background_appearance(&self, background_appearance: WindowBackgroundAppearance) {
758 let hwnd = self.0.hwnd;
759
760 match background_appearance {
761 WindowBackgroundAppearance::Opaque => {
762 // ACCENT_DISABLED
763 set_window_composition_attribute(hwnd, None, 0);
764 }
765 WindowBackgroundAppearance::Transparent => {
766 // Use ACCENT_ENABLE_TRANSPARENTGRADIENT for transparent background
767 set_window_composition_attribute(hwnd, None, 2);
768 }
769 WindowBackgroundAppearance::Blurred => {
770 // Enable acrylic blur
771 // ACCENT_ENABLE_ACRYLICBLURBEHIND
772 set_window_composition_attribute(hwnd, Some((0, 0, 0, 0)), 4);
773 }
774 }
775 }
776
777 fn minimize(&self) {
778 unsafe { ShowWindowAsync(self.0.hwnd, SW_MINIMIZE).ok().log_err() };
779 }
780
781 fn zoom(&self) {
782 unsafe {
783 if IsWindowVisible(self.0.hwnd).as_bool() {
784 ShowWindowAsync(self.0.hwnd, SW_MAXIMIZE).ok().log_err();
785 } else if let Some(status) = self.0.state.borrow_mut().initial_placement.as_mut() {
786 status.state = WindowOpenState::Maximized;
787 }
788 }
789 }
790
791 fn toggle_fullscreen(&self) {
792 if unsafe { IsWindowVisible(self.0.hwnd).as_bool() } {
793 self.0.toggle_fullscreen();
794 } else if let Some(status) = self.0.state.borrow_mut().initial_placement.as_mut() {
795 status.state = WindowOpenState::Fullscreen;
796 }
797 }
798
799 fn is_fullscreen(&self) -> bool {
800 self.0.state.borrow().is_fullscreen()
801 }
802
803 fn on_request_frame(&self, callback: Box<dyn FnMut(RequestFrameOptions)>) {
804 self.0.state.borrow_mut().callbacks.request_frame = Some(callback);
805 }
806
807 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> DispatchEventResult>) {
808 self.0.state.borrow_mut().callbacks.input = Some(callback);
809 }
810
811 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
812 self.0.state.borrow_mut().callbacks.active_status_change = Some(callback);
813 }
814
815 fn on_hover_status_change(&self, callback: Box<dyn FnMut(bool)>) {
816 self.0.state.borrow_mut().callbacks.hovered_status_change = Some(callback);
817 }
818
819 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
820 self.0.state.borrow_mut().callbacks.resize = Some(callback);
821 }
822
823 fn on_moved(&self, callback: Box<dyn FnMut()>) {
824 self.0.state.borrow_mut().callbacks.moved = Some(callback);
825 }
826
827 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
828 self.0.state.borrow_mut().callbacks.should_close = Some(callback);
829 }
830
831 fn on_close(&self, callback: Box<dyn FnOnce()>) {
832 self.0.state.borrow_mut().callbacks.close = Some(callback);
833 }
834
835 fn on_hit_test_window_control(&self, callback: Box<dyn FnMut() -> Option<WindowControlArea>>) {
836 self.0.state.borrow_mut().callbacks.hit_test_window_control = Some(callback);
837 }
838
839 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
840 self.0.state.borrow_mut().callbacks.appearance_changed = Some(callback);
841 }
842
843 fn draw(&self, scene: &Scene) {
844 self.0.state.borrow_mut().renderer.draw(scene).log_err();
845 }
846
847 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
848 self.0.state.borrow().renderer.sprite_atlas()
849 }
850
851 fn get_raw_handle(&self) -> HWND {
852 self.0.hwnd
853 }
854
855 fn gpu_specs(&self) -> Option<GpuSpecs> {
856 self.0.state.borrow().renderer.gpu_specs().log_err()
857 }
858
859 fn update_ime_position(&self, _bounds: Bounds<Pixels>) {
860 // There is no such thing on Windows.
861 }
862}
863
864#[implement(IDropTarget)]
865struct WindowsDragDropHandler(pub Rc<WindowsWindowInner>);
866
867impl WindowsDragDropHandler {
868 fn handle_drag_drop(&self, input: PlatformInput) {
869 let mut lock = self.0.state.borrow_mut();
870 if let Some(mut func) = lock.callbacks.input.take() {
871 drop(lock);
872 func(input);
873 self.0.state.borrow_mut().callbacks.input = Some(func);
874 }
875 }
876}
877
878#[allow(non_snake_case)]
879impl IDropTarget_Impl for WindowsDragDropHandler_Impl {
880 fn DragEnter(
881 &self,
882 pdataobj: windows::core::Ref<IDataObject>,
883 _grfkeystate: MODIFIERKEYS_FLAGS,
884 pt: &POINTL,
885 pdweffect: *mut DROPEFFECT,
886 ) -> windows::core::Result<()> {
887 unsafe {
888 let idata_obj = pdataobj.ok()?;
889 let config = FORMATETC {
890 cfFormat: CF_HDROP.0,
891 ptd: std::ptr::null_mut() as _,
892 dwAspect: DVASPECT_CONTENT.0,
893 lindex: -1,
894 tymed: TYMED_HGLOBAL.0 as _,
895 };
896 let cursor_position = POINT { x: pt.x, y: pt.y };
897 if idata_obj.QueryGetData(&config as _) == S_OK {
898 *pdweffect = DROPEFFECT_COPY;
899 let Some(mut idata) = idata_obj.GetData(&config as _).log_err() else {
900 return Ok(());
901 };
902 if idata.u.hGlobal.is_invalid() {
903 return Ok(());
904 }
905 let hdrop = HDROP(idata.u.hGlobal.0);
906 let mut paths = SmallVec::<[PathBuf; 2]>::new();
907 with_file_names(hdrop, |file_name| {
908 if let Some(path) = PathBuf::from_str(&file_name).log_err() {
909 paths.push(path);
910 }
911 });
912 ReleaseStgMedium(&mut idata);
913 let mut cursor_position = cursor_position;
914 ScreenToClient(self.0.hwnd, &mut cursor_position)
915 .ok()
916 .log_err();
917 let scale_factor = self.0.state.borrow().scale_factor;
918 let input = PlatformInput::FileDrop(FileDropEvent::Entered {
919 position: logical_point(
920 cursor_position.x as f32,
921 cursor_position.y as f32,
922 scale_factor,
923 ),
924 paths: ExternalPaths(paths),
925 });
926 self.handle_drag_drop(input);
927 } else {
928 *pdweffect = DROPEFFECT_NONE;
929 }
930 self.0
931 .drop_target_helper
932 .DragEnter(self.0.hwnd, idata_obj, &cursor_position, *pdweffect)
933 .log_err();
934 }
935 Ok(())
936 }
937
938 fn DragOver(
939 &self,
940 _grfkeystate: MODIFIERKEYS_FLAGS,
941 pt: &POINTL,
942 pdweffect: *mut DROPEFFECT,
943 ) -> windows::core::Result<()> {
944 let mut cursor_position = POINT { x: pt.x, y: pt.y };
945 unsafe {
946 *pdweffect = DROPEFFECT_COPY;
947 self.0
948 .drop_target_helper
949 .DragOver(&cursor_position, *pdweffect)
950 .log_err();
951 ScreenToClient(self.0.hwnd, &mut cursor_position)
952 .ok()
953 .log_err();
954 }
955 let scale_factor = self.0.state.borrow().scale_factor;
956 let input = PlatformInput::FileDrop(FileDropEvent::Pending {
957 position: logical_point(
958 cursor_position.x as f32,
959 cursor_position.y as f32,
960 scale_factor,
961 ),
962 });
963 self.handle_drag_drop(input);
964
965 Ok(())
966 }
967
968 fn DragLeave(&self) -> windows::core::Result<()> {
969 unsafe {
970 self.0.drop_target_helper.DragLeave().log_err();
971 }
972 let input = PlatformInput::FileDrop(FileDropEvent::Exited);
973 self.handle_drag_drop(input);
974
975 Ok(())
976 }
977
978 fn Drop(
979 &self,
980 pdataobj: windows::core::Ref<IDataObject>,
981 _grfkeystate: MODIFIERKEYS_FLAGS,
982 pt: &POINTL,
983 pdweffect: *mut DROPEFFECT,
984 ) -> windows::core::Result<()> {
985 let idata_obj = pdataobj.ok()?;
986 let mut cursor_position = POINT { x: pt.x, y: pt.y };
987 unsafe {
988 *pdweffect = DROPEFFECT_COPY;
989 self.0
990 .drop_target_helper
991 .Drop(idata_obj, &cursor_position, *pdweffect)
992 .log_err();
993 ScreenToClient(self.0.hwnd, &mut cursor_position)
994 .ok()
995 .log_err();
996 }
997 let scale_factor = self.0.state.borrow().scale_factor;
998 let input = PlatformInput::FileDrop(FileDropEvent::Submit {
999 position: logical_point(
1000 cursor_position.x as f32,
1001 cursor_position.y as f32,
1002 scale_factor,
1003 ),
1004 });
1005 self.handle_drag_drop(input);
1006
1007 Ok(())
1008 }
1009}
1010
1011#[derive(Debug, Clone, Copy)]
1012pub(crate) struct ClickState {
1013 button: MouseButton,
1014 last_click: Instant,
1015 last_position: Point<DevicePixels>,
1016 double_click_spatial_tolerance_width: i32,
1017 double_click_spatial_tolerance_height: i32,
1018 double_click_interval: Duration,
1019 pub(crate) current_count: usize,
1020}
1021
1022impl ClickState {
1023 pub fn new() -> Self {
1024 let double_click_spatial_tolerance_width = unsafe { GetSystemMetrics(SM_CXDOUBLECLK) };
1025 let double_click_spatial_tolerance_height = unsafe { GetSystemMetrics(SM_CYDOUBLECLK) };
1026 let double_click_interval = Duration::from_millis(unsafe { GetDoubleClickTime() } as u64);
1027
1028 ClickState {
1029 button: MouseButton::Left,
1030 last_click: Instant::now(),
1031 last_position: Point::default(),
1032 double_click_spatial_tolerance_width,
1033 double_click_spatial_tolerance_height,
1034 double_click_interval,
1035 current_count: 0,
1036 }
1037 }
1038
1039 /// update self and return the needed click count
1040 pub fn update(&mut self, button: MouseButton, new_position: Point<DevicePixels>) -> usize {
1041 if self.button == button && self.is_double_click(new_position) {
1042 self.current_count += 1;
1043 } else {
1044 self.current_count = 1;
1045 }
1046 self.last_click = Instant::now();
1047 self.last_position = new_position;
1048 self.button = button;
1049
1050 self.current_count
1051 }
1052
1053 pub fn system_update(&mut self, wparam: usize) {
1054 match wparam {
1055 // SPI_SETDOUBLECLKWIDTH
1056 29 => {
1057 self.double_click_spatial_tolerance_width =
1058 unsafe { GetSystemMetrics(SM_CXDOUBLECLK) }
1059 }
1060 // SPI_SETDOUBLECLKHEIGHT
1061 30 => {
1062 self.double_click_spatial_tolerance_height =
1063 unsafe { GetSystemMetrics(SM_CYDOUBLECLK) }
1064 }
1065 // SPI_SETDOUBLECLICKTIME
1066 32 => {
1067 self.double_click_interval =
1068 Duration::from_millis(unsafe { GetDoubleClickTime() } as u64)
1069 }
1070 _ => {}
1071 }
1072 }
1073
1074 #[inline]
1075 fn is_double_click(&self, new_position: Point<DevicePixels>) -> bool {
1076 let diff = self.last_position - new_position;
1077
1078 self.last_click.elapsed() < self.double_click_interval
1079 && diff.x.0.abs() <= self.double_click_spatial_tolerance_width
1080 && diff.y.0.abs() <= self.double_click_spatial_tolerance_height
1081 }
1082}
1083
1084struct StyleAndBounds {
1085 style: WINDOW_STYLE,
1086 x: i32,
1087 y: i32,
1088 cx: i32,
1089 cy: i32,
1090}
1091
1092#[repr(C)]
1093struct WINDOWCOMPOSITIONATTRIBDATA {
1094 attrib: u32,
1095 pv_data: *mut std::ffi::c_void,
1096 cb_data: usize,
1097}
1098
1099#[repr(C)]
1100struct AccentPolicy {
1101 accent_state: u32,
1102 accent_flags: u32,
1103 gradient_color: u32,
1104 animation_id: u32,
1105}
1106
1107type Color = (u8, u8, u8, u8);
1108
1109#[derive(Debug, Default, Clone, Copy)]
1110pub(crate) struct WindowBorderOffset {
1111 pub(crate) width_offset: i32,
1112 pub(crate) height_offset: i32,
1113}
1114
1115impl WindowBorderOffset {
1116 pub(crate) fn update(&mut self, hwnd: HWND) -> anyhow::Result<()> {
1117 let window_rect = unsafe {
1118 let mut rect = std::mem::zeroed();
1119 GetWindowRect(hwnd, &mut rect)?;
1120 rect
1121 };
1122 let client_rect = unsafe {
1123 let mut rect = std::mem::zeroed();
1124 GetClientRect(hwnd, &mut rect)?;
1125 rect
1126 };
1127 self.width_offset =
1128 (window_rect.right - window_rect.left) - (client_rect.right - client_rect.left);
1129 self.height_offset =
1130 (window_rect.bottom - window_rect.top) - (client_rect.bottom - client_rect.top);
1131 Ok(())
1132 }
1133}
1134
1135struct WindowOpenStatus {
1136 placement: WINDOWPLACEMENT,
1137 state: WindowOpenState,
1138}
1139
1140enum WindowOpenState {
1141 Maximized,
1142 Fullscreen,
1143 Windowed,
1144}
1145
1146const WINDOW_CLASS_NAME: PCWSTR = w!("Zed::Window");
1147
1148fn register_window_class(icon_handle: HICON) {
1149 static ONCE: Once = Once::new();
1150 ONCE.call_once(|| {
1151 let wc = WNDCLASSW {
1152 lpfnWndProc: Some(window_procedure),
1153 hIcon: icon_handle,
1154 lpszClassName: PCWSTR(WINDOW_CLASS_NAME.as_ptr()),
1155 style: CS_HREDRAW | CS_VREDRAW,
1156 hInstance: get_module_handle().into(),
1157 hbrBackground: unsafe { CreateSolidBrush(COLORREF(0x00000000)) },
1158 ..Default::default()
1159 };
1160 unsafe { RegisterClassW(&wc) };
1161 });
1162}
1163
1164unsafe extern "system" fn window_procedure(
1165 hwnd: HWND,
1166 msg: u32,
1167 wparam: WPARAM,
1168 lparam: LPARAM,
1169) -> LRESULT {
1170 if msg == WM_NCCREATE {
1171 let window_params = unsafe { &*(lparam.0 as *const CREATESTRUCTW) };
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}