egui-elements 1.0.10

Themes, widgets, and components for egui.
Documentation 
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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208

//! Per-widget visuals stored on [`Theme`](crate::theme::Theme) and optionally
//! overridden on a single widget via `.visuals(...)`.
//!
//! Custom widgets resolve visuals in this order: the override → values
//! written by [`Theme::install`](crate::theme::Theme::install) → stock
//! [`egui::Style`].

use egui::{Color32, CornerRadius, Response, Shadow, Stroke};

/// Alias: labels use the same visuals as buttons.
pub type LabelVisuals = ButtonVisuals;

/// Visuals for a button
#[derive(Copy, Clone, Debug, Default)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct ButtonVisuals {
   /// Glyph / label color.
   pub text: Color32,
   /// Idle fill.
   pub bg: Color32,
   /// Fill while hovered.
   pub bg_hover: Color32,
   /// Fill while the pointer is down.
   pub bg_click: Color32,
   /// Fill when [`crate::widgets::Button::selected`] is set.
   pub bg_selected: Color32,
   /// Idle border.
   pub border: Stroke,
   /// Border while hovered.
   pub border_hover: Stroke,
   /// Border while the pointer is down.
   pub border_click: Stroke,
   pub corner_radius: CornerRadius,
   pub shadow: Shadow,
}

impl PartialEq for ButtonVisuals {
   fn eq(&self, other: &Self) -> bool {
      self.text == other.text
         && self.bg == other.bg
         && self.bg_hover == other.bg_hover
         && self.bg_click == other.bg_click
         && self.bg_selected == other.bg_selected
         && self.border == other.border
         && self.border_hover == other.border_hover
         && self.border_click == other.border_click
         && self.corner_radius == other.corner_radius
         && self.shadow == other.shadow
   }
}

impl Eq for ButtonVisuals {}

impl ButtonVisuals {
   /// Fill for the current interaction state (click > hover > idle).
   pub fn bg_from_res(&self, res: &Response) -> Color32 {
      if res.is_pointer_button_down_on() || res.has_focus() || res.clicked() {
         self.bg_click
      } else if res.hovered() || res.highlighted() {
         self.bg_hover
      } else {
         self.bg
      }
   }

   /// Border for the current interaction state (click > hover > idle).
   pub fn border_from_res(&self, res: &Response) -> Stroke {
      if res.is_pointer_button_down_on() || res.has_focus() || res.clicked() {
         self.border_click
      } else if res.hovered() || res.highlighted() {
         self.border_hover
      } else {
         self.border
      }
   }
}

/// Visuals for a TextEdit
#[derive(Copy, Clone, Debug, Default)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct TextEditVisuals {
   /// Typed text color.
   pub text: Color32,
   /// Field fill.
   pub bg: Color32,
   /// Idle border.
   pub border: Stroke,
   /// Border while hovered.
   pub border_hover: Stroke,
   /// Border while focused / open.
   pub border_open: Stroke,
   pub corner_radius: CornerRadius,
   pub shadow: Shadow,
}

impl PartialEq for TextEditVisuals {
   fn eq(&self, other: &Self) -> bool {
      self.text == other.text
         && self.bg == other.bg
         && self.border == other.border
         && self.border_hover == other.border_hover
         && self.border_open == other.border_open
         && self.corner_radius == other.corner_radius
         && self.shadow == other.shadow
   }
}

impl Eq for TextEditVisuals {}

impl TextEditVisuals {
   /// Border for the current interaction state (open > hover > idle).
   pub fn border_from_res(&self, res: &Response) -> Stroke {
      if res.is_pointer_button_down_on() || res.has_focus() || res.clicked() {
         self.border_open
      } else if res.hovered() || res.highlighted() {
         self.border_hover
      } else {
         self.border
      }
   }
}

/// Visuals for a ComboBox
#[derive(Copy, Clone, Debug, Default)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct ComboBoxVisuals {
   /// Idle fill of the closed button.
   pub bg: Color32,
   /// Disclosure-icon color.
   pub icon: Color32,
   /// Fill while hovered.
   pub bg_hover: Color32,
   /// Fill while the popup is open.
   pub bg_open: Color32,
   /// Idle border.
   pub border: Stroke,
   /// Border while hovered.
   pub border_hover: Stroke,
   /// Border while the popup is open.
   pub border_open: Stroke,
   pub corner_radius: CornerRadius,
   pub shadow: Shadow,
}

impl PartialEq for ComboBoxVisuals {
   fn eq(&self, other: &Self) -> bool {
      self.bg == other.bg
         && self.icon == other.icon
         && self.bg_hover == other.bg_hover
         && self.bg_open == other.bg_open
         && self.border == other.border
         && self.border_hover == other.border_hover
         && self.border_open == other.border_open
         && self.corner_radius == other.corner_radius
         && self.shadow == other.shadow
   }
}

impl Eq for ComboBoxVisuals {}

impl ComboBoxVisuals {
   /// Fill for the current interaction state (open > hover > idle).
   pub fn bg_from_res(&self, res: &Response) -> Color32 {
      if res.is_pointer_button_down_on() || res.has_focus() || res.clicked() {
         self.bg_open
      } else if res.hovered() || res.highlighted() {
         self.bg_hover
      } else {
         self.bg
      }
   }

   /// Border for the current interaction state (open > hover > idle).
   pub fn border_from_res(&self, res: &Response) -> Stroke {
      if res.is_pointer_button_down_on() || res.has_focus() || res.clicked() {
         self.border_open
      } else if res.hovered() || res.highlighted() {
         self.border_hover
      } else {
         self.border
      }
   }
}

/// Hover / click overrides used by [`crate::utils::frame`].
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[derive(Clone, Copy, Debug, Default)]
pub struct FrameVisuals {
   /// Fill while hovered.
   pub bg_on_hover: Color32,
   /// Fill while the pointer is down.
   pub bg_on_click: Color32,
   /// `(width, color)` border while hovered.
   pub border_on_hover: (f32, Color32),
   /// `(width, color)` border while the pointer is down.
   pub border_on_click: (f32, Color32),
}

impl PartialEq for FrameVisuals {
   fn eq(&self, other: &Self) -> bool {
      self.bg_on_hover == other.bg_on_hover
         && self.bg_on_click == other.bg_on_click
         && self.border_on_hover == other.border_on_hover
         && self.border_on_click == other.border_on_click
   }
}

impl Eq for FrameVisuals {}