Add dragging window with cursor feature (#1840)

* X11 implementation. * Introduce example. * Wayland implementation. * Windows implementation. * Improve Wayland seat passing. * MacOS implementation. * Correct windows implementation per specification. * Update dependency smithay-client-toolkit from branch to master. * Fixed blocking thread in windows implementation. * Add multi-window example. * Move Wayland to a different PR. * Fix CHANGELOG. * Improve example. Co-authored-by: Markus Røyset <maroider@protonmail.com> * Rename `set_drag_window` to `begin_drag`. * Improve example. * Fix CHANGELOG. * Fix CHANGELOG. Co-authored-by: Markus Røyset <maroider@protonmail.com> * Rename to `drag_window`. * Fix typo. * Re-introduce Wayland implementation. * Fixing Wayland build. * Fixing Wayland build. * Move SCTK to 0.12.3. Co-authored-by: Markus Røyset <maroider@protonmail.com>
2021-03-07 10:43:23 +01:00 · 2021-03-07 10:43:23 +01:00 · 98470393d1
commit 98470393d1
parent 4192d04a53
16 changed files with 233 additions and 5 deletions
--- a/examples/drag_window.rs
+++ b/examples/drag_window.rs
@ -0,0 +1,73 @@
+use simple_logger::SimpleLogger;
+use winit::{
+    event::{
+        ElementState, Event, KeyboardInput, MouseButton, StartCause, VirtualKeyCode, WindowEvent,
+    },
+    event_loop::{ControlFlow, EventLoop},
+    window::{Window, WindowBuilder, WindowId},
+};
+
+fn main() {
+    SimpleLogger::new().init().unwrap();
+    let event_loop = EventLoop::new();
+
+    let window_1 = WindowBuilder::new().build(&event_loop).unwrap();
+    let window_2 = WindowBuilder::new().build(&event_loop).unwrap();
+
+    let mut switched = false;
+    let mut entered_id = window_2.id();
+
+    event_loop.run(move |event, _, control_flow| match event {
+        Event::NewEvents(StartCause::Init) => {
+            eprintln!("Switch which window is to be dragged by pressing \"x\".")
+        }
+        Event::WindowEvent { event, window_id } => match event {
+            WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
+            WindowEvent::MouseInput {
+                state: ElementState::Pressed,
+                button: MouseButton::Left,
+                ..
+            } => {
+                let window = if (window_id == window_1.id() && switched)
+                    || (window_id == window_2.id() && !switched)
+                {
+                    &window_2
+                } else {
+                    &window_1
+                };
+
+                window.drag_window().unwrap()
+            }
+            WindowEvent::CursorEntered { .. } => {
+                entered_id = window_id;
+                name_windows(entered_id, switched, &window_1, &window_2)
+            }
+            WindowEvent::KeyboardInput {
+                input:
+                    KeyboardInput {
+                        state: ElementState::Released,
+                        virtual_keycode: Some(VirtualKeyCode::X),
+                        ..
+                    },
+                ..
+            } => {
+                switched = !switched;
+                name_windows(entered_id, switched, &window_1, &window_2);
+                println!("Switched!")
+            }
+            _ => (),
+        },
+        _ => (),
+    });
+}
+
+fn name_windows(window_id: WindowId, switched: bool, window_1: &Window, window_2: &Window) {
+    let (drag_target, other) =
+        if (window_id == window_1.id() && switched) || (window_id == window_2.id() && !switched) {
+            (&window_2, &window_1)
+        } else {
+            (&window_1, &window_2)
+        };
+    drag_target.set_title("drag target");
+    other.set_title("winit window");
+}