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// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
// SPDX-License-Identifier: Apache-2.0
// SPDX-License-Identifier: MIT
#[cfg(feature = "tray-icon")]
use crate::Tray;
use serde_repr::Deserialize_repr;
#[cfg(feature = "tray-icon")]
use tauri::Manager;
#[cfg(feature = "tray-icon")]
use tauri::Monitor;
use tauri::{PhysicalPosition, PhysicalSize, Result, Runtime, WebviewWindow, Window};
/// Well known window positions.
#[derive(Debug, Deserialize_repr)]
#[repr(u16)]
pub enum Position {
TopLeft = 0,
TopRight,
BottomLeft,
BottomRight,
TopCenter,
BottomCenter,
LeftCenter,
RightCenter,
Center,
#[cfg(feature = "tray-icon")]
TrayLeft,
#[cfg(feature = "tray-icon")]
TrayBottomLeft,
#[cfg(feature = "tray-icon")]
TrayRight,
#[cfg(feature = "tray-icon")]
TrayBottomRight,
#[cfg(feature = "tray-icon")]
TrayCenter,
#[cfg(feature = "tray-icon")]
TrayBottomCenter,
}
/// A [`Window`] extension that provides extra methods related to positioning.
pub trait WindowExt {
/// Moves the [`Window`] to the given [`Position`]
///
/// All (non-tray) positions are relative to the **current** screen.
fn move_window(&self, position: Position) -> Result<()>;
#[cfg(feature = "tray-icon")]
/// Moves the [`Window`] to the given [`Position`] while constraining Tray Positions to the dimensions of the screen.
///
/// All non-tray positions will not be constrained by this method.
///
/// This method allows you to position your Tray Windows without having them
/// cut off on the screen borders.
fn move_window_constrained(&self, position: Position) -> Result<()>;
}
impl<R: Runtime> WindowExt for WebviewWindow<R> {
fn move_window(&self, pos: Position) -> Result<()> {
self.as_ref().window().move_window(pos)
}
#[cfg(feature = "tray-icon")]
fn move_window_constrained(&self, position: Position) -> Result<()> {
self.as_ref().window().move_window_constrained(position)
}
}
impl<R: Runtime> WindowExt for Window<R> {
#[cfg(feature = "tray-icon")]
fn move_window_constrained(&self, position: Position) -> Result<()> {
// Diverge to basic move_window, if the position is not a tray position
if !matches!(
position,
Position::TrayLeft
| Position::TrayBottomLeft
| Position::TrayRight
| Position::TrayBottomRight
| Position::TrayCenter
| Position::TrayBottomCenter
) {
return self.move_window(position);
}
let window_position = calculate_position(self, position)?;
let monitor = get_monitor_for_tray_icon(self)?;
if let Some(monitor) = monitor {
let monitor_size = monitor.size();
let monitor_position = monitor.position();
let window_size = self.outer_size()?;
let right_border_monitor = monitor_position.x as f64 + monitor_size.width as f64;
let left_border_monitor = monitor_position.x as f64;
let right_border_window = window_position.x as f64 + window_size.width as f64;
let left_border_window = window_position.x as f64;
let constrained_x = if left_border_window < left_border_monitor {
left_border_monitor
} else if right_border_window > right_border_monitor {
right_border_monitor - window_size.width as f64
} else {
window_position.x as f64
};
let bottom_border_monitor = monitor_position.y as f64 + monitor_size.height as f64;
let top_border_monitor = monitor_position.y as f64;
let bottom_border_window = window_position.y as f64 + window_size.height as f64;
let top_border_window = window_position.y as f64;
let constrained_y = if top_border_window < top_border_monitor {
top_border_monitor
} else if bottom_border_window > bottom_border_monitor {
bottom_border_monitor - window_size.height as f64
} else {
window_position.y as f64
};
self.set_position(PhysicalPosition::new(constrained_x, constrained_y))?;
} else {
// Fallback on non constrained positioning
self.set_position(window_position)?;
}
Ok(())
}
fn move_window(&self, pos: Position) -> Result<()> {
let position = calculate_position(self, pos)?;
self.set_position(position)
}
}
#[cfg(feature = "tray-icon")]
/// Retrieve the monitor, where the tray icon is located on.
fn get_monitor_for_tray_icon<R: Runtime>(window: &Window<R>) -> Result<Option<Monitor>> {
let tray_position = window
.state::<Tray>()
.0
.lock()
.unwrap()
.map(|(pos, _)| pos)
.unwrap_or_default();
window.monitor_from_point(tray_position.x, tray_position.y)
}
/// Calculate the top-left position of the window based on the given
/// [`Position`].
fn calculate_position<R: Runtime>(
window: &Window<R>,
pos: Position,
) -> Result<PhysicalPosition<i32>> {
use Position::*;
let screen = window.current_monitor()?.unwrap();
// Only use the screen_position for the Tray independent positioning,
// because a tray event may not be called on the currently active monitor.
let screen_position = screen.position();
let screen_size = PhysicalSize::<i32> {
width: screen.size().width as i32,
height: screen.size().height as i32,
};
let window_size = PhysicalSize::<i32> {
width: window.outer_size()?.width as i32,
height: window.outer_size()?.height as i32,
};
#[cfg(feature = "tray-icon")]
let (tray_position, tray_size) = window
.state::<Tray>()
.0
.lock()
.unwrap()
.map(|(pos, size)| {
(
Some((pos.x as i32, pos.y as i32)),
Some((size.width as i32, size.height as i32)),
)
})
.unwrap_or_default();
let physical_pos = match pos {
TopLeft => *screen_position,
TopRight => PhysicalPosition {
x: screen_position.x + (screen_size.width - window_size.width),
y: screen_position.y,
},
BottomLeft => PhysicalPosition {
x: screen_position.x,
y: screen_size.height - (window_size.height - screen_position.y),
},
BottomRight => PhysicalPosition {
x: screen_position.x + (screen_size.width - window_size.width),
y: screen_size.height - (window_size.height - screen_position.y),
},
TopCenter => PhysicalPosition {
x: screen_position.x + ((screen_size.width / 2) - (window_size.width / 2)),
y: screen_position.y,
},
BottomCenter => PhysicalPosition {
x: screen_position.x + ((screen_size.width / 2) - (window_size.width / 2)),
y: screen_size.height - (window_size.height - screen_position.y),
},
LeftCenter => PhysicalPosition {
x: screen_position.x,
y: screen_position.y + (screen_size.height / 2) - (window_size.height / 2),
},
RightCenter => PhysicalPosition {
x: screen_position.x + (screen_size.width - window_size.width),
y: screen_position.y + (screen_size.height / 2) - (window_size.height / 2),
},
Center => PhysicalPosition {
x: screen_position.x + ((screen_size.width / 2) - (window_size.width / 2)),
y: screen_position.y + (screen_size.height / 2) - (window_size.height / 2),
},
#[cfg(feature = "tray-icon")]
TrayLeft => {
if let (Some((tray_x, tray_y)), Some((_, _tray_height))) = (tray_position, tray_size) {
let y = tray_y - window_size.height;
// Choose y value based on the target OS
#[cfg(target_os = "windows")]
let y = if y < 0 { tray_y + _tray_height } else { y };
#[cfg(target_os = "macos")]
let y = if y < 0 { tray_y } else { y };
PhysicalPosition { x: tray_x, y }
} else {
panic!("Tray position not set");
}
}
#[cfg(feature = "tray-icon")]
TrayBottomLeft => {
if let Some((tray_x, tray_y)) = tray_position {
PhysicalPosition {
x: tray_x,
y: tray_y,
}
} else {
panic!("Tray position not set");
}
}
#[cfg(feature = "tray-icon")]
TrayRight => {
if let (Some((tray_x, tray_y)), Some((tray_width, _tray_height))) =
(tray_position, tray_size)
{
let y = tray_y - window_size.height;
// Choose y value based on the target OS
#[cfg(target_os = "windows")]
let y = if y < 0 { tray_y + _tray_height } else { y };
#[cfg(target_os = "macos")]
let y = if y < 0 { tray_y } else { y };
PhysicalPosition {
x: tray_x + tray_width,
y,
}
} else {
panic!("Tray position not set");
}
}
#[cfg(feature = "tray-icon")]
TrayBottomRight => {
if let (Some((tray_x, tray_y)), Some((tray_width, _))) = (tray_position, tray_size) {
PhysicalPosition {
x: tray_x + tray_width,
y: tray_y,
}
} else {
panic!("Tray position not set");
}
}
#[cfg(feature = "tray-icon")]
TrayCenter => {
if let (Some((tray_x, tray_y)), Some((tray_width, _tray_height))) =
(tray_position, tray_size)
{
let x = tray_x + tray_width / 2 - window_size.width / 2;
let y = tray_y - window_size.height;
// Choose y value based on the target OS
#[cfg(target_os = "windows")]
let y = if y < 0 { tray_y + _tray_height } else { y };
#[cfg(target_os = "macos")]
let y = if y < 0 { tray_y } else { y };
PhysicalPosition { x, y }
} else {
panic!("Tray position not set");
}
}
#[cfg(feature = "tray-icon")]
TrayBottomCenter => {
if let (Some((tray_x, tray_y)), Some((tray_width, _))) = (tray_position, tray_size) {
PhysicalPosition {
x: tray_x + (tray_width / 2) - (window_size.width / 2),
y: tray_y,
}
} else {
panic!("Tray position not set");
}
}
};
Ok(physical_pos)
}
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