par-term-settings-ui 0.8.0

Settings UI for par-term terminal emulator
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
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229

use crate::SettingsUI;
use crate::section::collapsing_section;
use par_term_config::BackgroundImageMode;
use std::collections::HashSet;

pub fn show_pane_backgrounds(
    ui: &mut egui::Ui,
    settings: &mut SettingsUI,
    changes_this_frame: &mut bool,
    collapsed: &mut HashSet<String>,
) {
    collapsing_section(
        ui,
        "Per-Pane Background",
        "per_pane_background",
        false,
        collapsed,
        |ui| {
            ui.label("Override the global background for individual split panes.");
            ui.add_space(4.0);

            // Identify Panes button + Pane index selector
            ui.horizontal(|ui| {
                if ui
                    .button("Identify Panes")
                    .on_hover_text("Flash pane indices on the terminal window for 3 seconds")
                    .clicked()
                {
                    settings.identify_panes_requested = true;
                }
            });

            ui.add_space(4.0);

            // Initialize temp fields from pane 0 config on first render
            if settings.temp_pane_bg_index.is_none() {
                settings.temp_pane_bg_index = Some(0);
                if let Some((image_path, mode, opacity, darken)) =
                    settings.config.get_pane_background(0)
                {
                    settings.temp_pane_bg_path = image_path;
                    settings.temp_pane_bg_mode = mode;
                    settings.temp_pane_bg_opacity = opacity;
                    settings.temp_pane_bg_darken = darken;
                }
            }

            // Pane index selector with prev/next buttons
            ui.horizontal(|ui| {
                ui.label("Pane index:");

                let mut index = settings.temp_pane_bg_index.unwrap_or(0);
                let mut changed = false;

                if ui.add_enabled(index > 0, egui::Button::new("<")).clicked() {
                    index = index.saturating_sub(1);
                    changed = true;
                }

                if ui
                    .add(egui::DragValue::new(&mut index).range(0..=9))
                    .changed()
                {
                    changed = true;
                }

                if ui.add_enabled(index < 9, egui::Button::new(">")).clicked() {
                    index = index.saturating_add(1).min(9);
                    changed = true;
                }

                if changed {
                    settings.temp_pane_bg_index = Some(index);
                    if let Some((image_path, mode, opacity, darken)) =
                        settings.config.get_pane_background(index)
                    {
                        settings.temp_pane_bg_path = image_path;
                        settings.temp_pane_bg_mode = mode;
                        settings.temp_pane_bg_opacity = opacity;
                        settings.temp_pane_bg_darken = darken;
                    } else {
                        settings.temp_pane_bg_path.clear();
                        settings.temp_pane_bg_mode = BackgroundImageMode::default();
                        settings.temp_pane_bg_opacity = 1.0;
                        settings.temp_pane_bg_darken = 0.0;
                    }
                }
            });

            // Track whether any pane background field changed this frame
            let mut pane_bg_changed = false;

            // Image path
            ui.horizontal(|ui| {
                ui.label("Image path:");
                if ui
                    .text_edit_singleline(&mut settings.temp_pane_bg_path)
                    .changed()
                {
                    pane_bg_changed = true;
                }

                if ui.button("Browse\u{2026}").clicked()
                    && let Some(path) = settings.pick_file_path("Select pane background image")
                {
                    settings.temp_pane_bg_path = path;
                    pane_bg_changed = true;
                }
            });

            // Mode dropdown
            ui.horizontal(|ui| {
                ui.label("Mode:");
                let current = settings.temp_pane_bg_mode as usize;
                let mut selected = current;
                egui::ComboBox::from_id_salt("pane_bg_mode")
                    .selected_text(match current {
                        0 => "Fit",
                        1 => "Fill",
                        2 => "Stretch",
                        3 => "Tile",
                        4 => "Center",
                        _ => "Stretch",
                    })
                    .show_ui(ui, |ui| {
                        ui.selectable_value(&mut selected, 0, "Fit");
                        ui.selectable_value(&mut selected, 1, "Fill");
                        ui.selectable_value(&mut selected, 2, "Stretch");
                        ui.selectable_value(&mut selected, 3, "Tile");
                        ui.selectable_value(&mut selected, 4, "Center");
                    });
                if selected != current {
                    settings.temp_pane_bg_mode = match selected {
                        0 => BackgroundImageMode::Fit,
                        1 => BackgroundImageMode::Fill,
                        2 => BackgroundImageMode::Stretch,
                        3 => BackgroundImageMode::Tile,
                        4 => BackgroundImageMode::Center,
                        _ => BackgroundImageMode::default(),
                    };
                    pane_bg_changed = true;
                }
            });

            // Opacity slider
            ui.horizontal(|ui| {
                ui.label("Opacity:");
                if ui
                    .add(egui::Slider::new(
                        &mut settings.temp_pane_bg_opacity,
                        0.0..=1.0,
                    ))
                    .changed()
                {
                    pane_bg_changed = true;
                }
            });

            // Darken slider
            ui.horizontal(|ui| {
                ui.label("Darken:");
                if ui
                    .add(egui::Slider::new(
                        &mut settings.temp_pane_bg_darken,
                        0.0..=1.0,
                    ))
                    .on_hover_text(
                        "Darken the background image (0.0 = original, 1.0 = fully black)",
                    )
                    .changed()
                {
                    pane_bg_changed = true;
                }
            });

            // Auto-apply changes to config in real-time
            if pane_bg_changed {
                let index = settings.temp_pane_bg_index.unwrap_or(0);
                settings
                    .config
                    .pane_backgrounds
                    .retain(|pb| pb.index != index);
                if !settings.temp_pane_bg_path.is_empty() {
                    settings
                        .config
                        .pane_backgrounds
                        .push(par_term_config::PaneBackgroundConfig {
                            index,
                            image: settings.temp_pane_bg_path.clone(),
                            mode: settings.temp_pane_bg_mode,
                            opacity: settings.temp_pane_bg_opacity,
                            darken: settings.temp_pane_bg_darken,
                        });
                }
                settings.has_changes = true;
                *changes_this_frame = true;
            }

            ui.add_space(4.0);

            // Clear pane background button
            if ui.button("Clear pane background").clicked() {
                let index = settings.temp_pane_bg_index.unwrap_or(0);
                settings
                    .config
                    .pane_backgrounds
                    .retain(|pb| pb.index != index);
                settings.temp_pane_bg_path.clear();
                settings.temp_pane_bg_mode = BackgroundImageMode::default();
                settings.temp_pane_bg_opacity = 1.0;
                settings.temp_pane_bg_darken = 0.0;
                settings.has_changes = true;
                *changes_this_frame = true;
            }

            // Show configured pane backgrounds
            if !settings.config.pane_backgrounds.is_empty() {
                ui.add_space(4.0);
                ui.label("Configured pane backgrounds:");
                for pb in &settings.config.pane_backgrounds {
                    ui.label(format!(
                        "  Pane {}: {} ({:?}, opacity: {:.1}, darken: {:.1})",
                        pb.index, pb.image, pb.mode, pb.opacity, pb.darken
                    ));
                }
            }
        },
    );
}