1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146

// Copyright 2019-2021 Tauri Programme within The Commons Conservancy
// SPDX-License-Identifier: Apache-2.0
// SPDX-License-Identifier: MIT

//! A layer between raw [`Runtime`] webview windows and Tauri.

use crate::{
  webview::{FileDropHandler, WebviewAttributes, WebviewRpcHandler},
  Dispatch, Params, Runtime, WindowBuilder,
};
use serde::Serialize;
use tauri_utils::config::WindowConfig;

use std::hash::{Hash, Hasher};

/// UI scaling utilities.
pub mod dpi;

/// An event from a window.
#[derive(Debug, Clone)]
#[non_exhaustive]
pub enum WindowEvent {
  /// The size of the window has changed. Contains the client area's new dimensions.
  Resized(dpi::PhysicalSize<u32>),
  /// The position of the window has changed. Contains the window's new position.
  Moved(dpi::PhysicalPosition<i32>),
  /// The window has been requested to close.
  CloseRequested,
  /// The window has been destroyed.
  Destroyed,
  /// The window gained or lost focus.
  ///
  /// The parameter is true if the window has gained focus, and false if it has lost focus.
  Focused(bool),
  ///The window's scale factor has changed.
  ///
  /// The following user actions can cause DPI changes:
  ///
  /// - Changing the display's resolution.
  /// - Changing the display's scale factor (e.g. in Control Panel on Windows).
  /// - Moving the window to a display with a different scale factor.
  ScaleFactorChanged {
    /// The new scale factor.
    scale_factor: f64,
    /// The window inner size.
    new_inner_size: dpi::PhysicalSize<u32>,
  },
}

/// A menu event.
#[derive(Serialize)]
#[serde(rename_all = "camelCase")]
pub struct MenuEvent {
  pub menu_item_id: u16,
}

/// A webview window that has yet to be built.
pub struct PendingWindow<P: Params> {
  /// The label that the window will be named.
  pub label: P::Label,

  /// The [`WindowBuilder`] that the window will be created with.
  pub window_builder: <<P::Runtime as Runtime>::Dispatcher as Dispatch>::WindowBuilder,

  /// The [`WebviewAttributes`] that the webview will be created with.
  pub webview_attributes: WebviewAttributes,

  /// How to handle RPC calls on the webview window.
  pub rpc_handler: Option<WebviewRpcHandler<P>>,

  /// How to handle a file dropping onto the webview window.
  pub file_drop_handler: Option<FileDropHandler<P>>,

  /// The resolved URL to load on the webview.
  pub url: String,
}

impl<P: Params> PendingWindow<P> {
  /// Create a new [`PendingWindow`] with a label and starting url.
  pub fn new(
    window_builder: <<P::Runtime as Runtime>::Dispatcher as Dispatch>::WindowBuilder,
    webview_attributes: WebviewAttributes,
    label: P::Label,
  ) -> Self {
    Self {
      window_builder,
      webview_attributes,
      label,
      rpc_handler: None,
      file_drop_handler: None,
      url: "tauri://localhost".to_string(),
    }
  }

  /// Create a new [`PendingWindow`] from a [`WindowConfig`] with a label and starting url.
  pub fn with_config(
    window_config: WindowConfig,
    webview_attributes: WebviewAttributes,
    label: P::Label,
  ) -> Self {
    Self {
      window_builder:
        <<<P::Runtime as Runtime>::Dispatcher as Dispatch>::WindowBuilder>::with_config(
          window_config,
        ),
      webview_attributes,
      label,
      rpc_handler: None,
      file_drop_handler: None,
      url: "tauri://localhost".to_string(),
    }
  }
}

/// A webview window that is not yet managed by Tauri.
pub struct DetachedWindow<P: Params> {
  /// Name of the window
  pub label: P::Label,

  /// The [`Dispatch`](crate::Dispatch) associated with the window.
  pub dispatcher: <P::Runtime as Runtime>::Dispatcher,
}

impl<P: Params> Clone for DetachedWindow<P> {
  fn clone(&self) -> Self {
    Self {
      label: self.label.clone(),
      dispatcher: self.dispatcher.clone(),
    }
  }
}

impl<P: Params> Hash for DetachedWindow<P> {
  /// Only use the [`DetachedWindow`]'s label to represent its hash.
  fn hash<H: Hasher>(&self, state: &mut H) {
    self.label.hash(state)
  }
}

impl<P: Params> Eq for DetachedWindow<P> {}
impl<P: Params> PartialEq for DetachedWindow<P> {
  /// Only use the [`DetachedWindow`]'s label to compare equality.
  fn eq(&self, other: &Self) -> bool {
    self.label.eq(&other.label)
  }
}