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annotate src/gtk.rs @ 13:97e543f50f62

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Split GTK UI into another module.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sun, 01 Nov 2020 16:08:29 +0100
parents
children adab13145994
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13
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1 // Tablet emulator, for people who don’t own one
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2 // Copyright © 2020 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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3 //
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4 // This program is free software: you can redistribute it and/or modify
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5 // it under the terms of the GNU Affero General Public License as published by
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6 // the Free Software Foundation, either version 3 of the License, or
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7 // (at your option) any later version.
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8 //
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9 // This program is distributed in the hope that it will be useful,
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10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 // GNU Affero General Public License for more details.
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13 //
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14 // You should have received a copy of the GNU Affero General Public License
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15 // along with this program. If not, see <https://www.gnu.org/licenses/>.
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16
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17 use gio::prelude::*;
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18 use glib::clone;
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19 use gtk::prelude::*;
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20
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21 use std::env::args;
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22 use std::io::ErrorKind;
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23 use std::sync::Arc;
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24 use input_linux::Key;
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25
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26 use crate::{
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27 state::State,
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28 DEFAULT_WIDTH, DEFAULT_HEIGHT,
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29 };
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30
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31 fn build_main_menu(application: &gtk::Application) {
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32 let quit = gio::SimpleAction::new("quit", None);
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33 application.set_accels_for_action("app.quit", &["<Control>q"]);
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34 application.add_action(&quit);
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35 quit.connect_activate(clone!(@weak application => move |_, _| application.quit()));
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36
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37 let about = gio::SimpleAction::new("about", None);
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38 application.add_action(&about);
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39 about.connect_activate(|_, _| {
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40 let about = gtk::AboutDialog::new();
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41 about.set_program_name("TabletEmu");
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42 about.set_logo_icon_name(Some("input-tablet"));
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43 about.set_website(Some("https://hg.linkmauve.fr/tablet-emu"));
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44 about.set_version(Some("0.1"));
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45 about.set_license_type(gtk::License::Agpl30);
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46 about.set_copyright(Some("© 2020 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>"));
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47 about.run();
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48 unsafe {
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49 about.destroy();
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50 }
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51 });
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52
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53 let menu = gio::Menu::new();
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54 {
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55 let file = gio::Menu::new();
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56 file.append(Some("_Quit"), Some("app.quit"));
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57 menu.append_submenu(Some("_File"), &file);
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58 }
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59 {
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60 let help = gio::Menu::new();
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61 help.append(Some("_About"), Some("app.about"));
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62 menu.append_submenu(Some("_Help"), &help);
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63 }
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64 application.set_menubar(Some(&menu));
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65 }
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66
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67 fn build_ui(application: &gtk::Application) {
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68 build_main_menu(application);
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69
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70 let state = match State::new() {
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71 Ok(state) => state,
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72 Err(err) => {
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73 match err.kind() {
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74 ErrorKind::NotFound => {
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75 eprintln!("Couldn’t find /dev/uinput: {}", err);
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76 eprintln!("Maybe you forgot to `modprobe uinput`?");
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77 }
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78 ErrorKind::PermissionDenied => {
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79 eprintln!("Couldn’t open /dev/uinput for writing: {}", err);
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80 eprintln!("Maybe you aren’t allowed to create input devices?");
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81 }
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82 _ => eprintln!("Couldn’t open /dev/uinput for writing: {}", err),
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83 }
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84 std::process::exit(1);
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85 }
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86 };
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87
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88 let window = gtk::ApplicationWindow::new(application);
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89 window.set_title("tablet-emu");
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90 window.set_position(gtk::WindowPosition::Center);
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91
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92 let hbox = gtk::Box::new(gtk::Orientation::Horizontal, 0);
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93 let tools_box = gtk::Box::new(gtk::Orientation::Vertical, 0);
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94
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95 macro_rules! impl_tool {
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96 ($tool:tt) => {
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97 let tool = gtk::Button::with_mnemonic($tool);
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98 let state_weak = Arc::downgrade(&state);
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99 tool.connect_clicked(move |b| {
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100 let state = state_weak.upgrade().unwrap();
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101 let mut state = state.lock().unwrap();
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102 let tool = match b.get_label().unwrap().as_str() {
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103 "_Pen" => Key::ButtonToolPen,
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104 "_Rubber" => Key::ButtonToolRubber,
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105 "_Brush" => Key::ButtonToolBrush,
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106 "P_encil" => Key::ButtonToolPencil,
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107 "_Airbrush" => Key::ButtonToolAirbrush,
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108 _ => unreachable!(),
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109 };
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110 state.select_tool(tool);
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111 });
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112 tools_box.add(&tool);
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113 };
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114 };
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115 impl_tool!("_Pen");
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116 impl_tool!("_Rubber");
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117 impl_tool!("_Brush");
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118 impl_tool!("P_encil");
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119 impl_tool!("_Airbrush");
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120
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121 let drawing_area = gtk::DrawingArea::new();
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122 drawing_area.set_size_request(DEFAULT_WIDTH, DEFAULT_HEIGHT);
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123 drawing_area.set_hexpand(true);
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124 drawing_area.set_events(
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125 gdk::EventMask::BUTTON_PRESS_MASK
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126 | gdk::EventMask::BUTTON_RELEASE_MASK
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127 | gdk::EventMask::POINTER_MOTION_MASK,
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128 );
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129 let state_weak = Arc::downgrade(&state);
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130 drawing_area.connect_configure_event(move |_, event| {
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131 let state = state_weak.upgrade().unwrap();
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132 let mut state = state.lock().unwrap();
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133 state.set_size(event.get_size());
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134 true
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135 });
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136 let state_weak = Arc::downgrade(&state);
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137 drawing_area.connect_button_press_event(move |_, event| {
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138 if event.get_button() != 1 {
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139 return Inhibit(false);
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140 }
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141
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142 let state = state_weak.upgrade().unwrap();
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143 let mut state = state.lock().unwrap();
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144 let (x, y) = event.get_position();
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145 state.press(x, y).unwrap();
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146 Inhibit(false)
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147 });
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148 let state_weak = Arc::downgrade(&state);
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149 drawing_area.connect_button_release_event(move |_, event| {
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150 if event.get_button() != 1 {
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151 return Inhibit(false);
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152 }
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153
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154 let state = state_weak.upgrade().unwrap();
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155 let mut state = state.lock().unwrap();
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156 let (x, y) = event.get_position();
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157 state.release(x, y).unwrap();
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158 Inhibit(false)
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159 });
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160 drawing_area.connect_motion_notify_event(move |_, event| {
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161 let mut state = state.lock().unwrap();
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162 let (x, y) = event.get_position();
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163 state.motion(x, y).unwrap();
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164 Inhibit(false)
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165 });
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166 drawing_area.connect_draw(move |_, ctx| {
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167 //println!("drawing {}", drawing_area);
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168 ctx.set_source_rgb(1., 0., 0.);
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169 ctx.set_operator(cairo::Operator::Screen);
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170 ctx.paint();
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171 Inhibit(false)
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172 });
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173
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174 hbox.add(&tools_box);
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175 hbox.add(&drawing_area);
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176
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177 window.add(&hbox);
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178
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179 window.show_all();
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180 }
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181
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182 pub fn main() {
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183 let application = gtk::Application::new(
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184 Some("fr.linkmauve.TabletEmu"),
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185 gio::ApplicationFlags::empty(),
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186 )
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187 .expect("Initialisation failed…");
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188 application.connect_activate(build_ui);
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189 application.run(&args().collect::<Vec<_>>());
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190 }