1// Copyright © SixtyFPS GmbH <info@slint.dev>
2// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0
3
4use winit::window::{CursorIcon, ResizeDirection};
5
6pub fn handle_cursor_move_for_resize(
7 window: &winit::window::Window,
8 position: winit::dpi::PhysicalPosition<f64>,
9 current_direction: Option<ResizeDirection>,
10 border_size: f64,
11) -> Option<ResizeDirection> {
12 if !window.is_decorated() && window.is_resizable() {
13 let location: Option = get_resize_direction(win_size:window.inner_size(), position, border_size);
14
15 if current_direction != location {
16 window.set_cursor(resize_direction_cursor_icon(resize_direction:location));
17 }
18
19 return location;
20 }
21
22 None
23}
24
25pub fn handle_resize(window: &winit::window::Window, direction: Option<ResizeDirection>) {
26 if let Some(dir: ResizeDirection) = direction {
27 let _ = window.drag_resize_window(direction:dir);
28 }
29}
30
31/// Get the cursor icon that corresponds to the resize direction.
32fn resize_direction_cursor_icon(resize_direction: Option<ResizeDirection>) -> CursorIcon {
33 match resize_direction {
34 Some(resize_direction: ResizeDirection) => match resize_direction {
35 ResizeDirection::East => CursorIcon::EResize,
36 ResizeDirection::North => CursorIcon::NResize,
37 ResizeDirection::NorthEast => CursorIcon::NeResize,
38 ResizeDirection::NorthWest => CursorIcon::NwResize,
39 ResizeDirection::South => CursorIcon::SResize,
40 ResizeDirection::SouthEast => CursorIcon::SeResize,
41 ResizeDirection::SouthWest => CursorIcon::SwResize,
42 ResizeDirection::West => CursorIcon::WResize,
43 },
44 None => CursorIcon::Default,
45 }
46}
47
48fn get_resize_direction(
49 win_size: winit::dpi::PhysicalSize<u32>,
50 position: winit::dpi::PhysicalPosition<f64>,
51 border_size: f64,
52) -> Option<ResizeDirection> {
53 enum X {
54 West,
55 East,
56 Default,
57 }
58
59 enum Y {
60 North,
61 South,
62 Default,
63 }
64
65 let xdir = if position.x < border_size {
66 X::West
67 } else if position.x > (win_size.width as f64 - border_size) {
68 X::East
69 } else {
70 X::Default
71 };
72
73 let ydir = if position.y < border_size {
74 Y::North
75 } else if position.y > (win_size.height as f64 - border_size) {
76 Y::South
77 } else {
78 Y::Default
79 };
80
81 Some(match (xdir, ydir) {
82 (X::West, Y::North) => ResizeDirection::NorthWest,
83 (X::West, Y::South) => ResizeDirection::SouthWest,
84 (X::West, Y::Default) => ResizeDirection::West,
85
86 (X::East, Y::North) => ResizeDirection::NorthEast,
87 (X::East, Y::South) => ResizeDirection::SouthEast,
88 (X::East, Y::Default) => ResizeDirection::East,
89
90 (X::Default, Y::North) => ResizeDirection::North,
91 (X::Default, Y::South) => ResizeDirection::South,
92 (X::Default, Y::Default) => return None,
93 })
94}
95