Mercurial > tablet-emu

annotate src/state.rs @ 16:478cf2a7d577

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Reformat with rustfmt.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Thu, 26 Aug 2021 19:45:30 +0200
parents d103f7cca0bd
children 0bce7fe96937
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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 crate::uinput::{
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18 create_uinput_device, input_axis_new, input_key_new, input_misc_new, input_synchronize_new,
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19 };
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20 use crate::{DEFAULT_HEIGHT, DEFAULT_WIDTH, MAX_X, MAX_Y};
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21 use input_linux::{AbsoluteAxis, Key, MiscKind, SynchronizeKind, UInputHandle};
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22 use std::fs::File;
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23
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24 pub struct State {
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25 dev: UInputHandle<File>,
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26 width: f64,
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27 height: f64,
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28 selected_tool: Key,
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29 pressed: bool,
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30 }
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31
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32 impl State {
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33 pub fn new() -> std::io::Result<State> {
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34 let dev = create_uinput_device()?;
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35 println!(
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36 "New device at {:?} ({:?})",
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37 dev.evdev_path()?,
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38 dev.sys_path()?
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39 );
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40
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41 Ok(State {
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42 dev,
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43 width: DEFAULT_WIDTH as f64,
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44 height: DEFAULT_HEIGHT as f64,
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45 selected_tool: Key::ButtonToolPen,
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46 pressed: false,
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47 })
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48 }
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49
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50 pub fn set_size(&mut self, width: i32, height: i32) {
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51 self.width = width as f64;
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52 self.height = height as f64;
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53 }
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54
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55 pub fn select_tool(&mut self, tool: Key) {
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56 self.selected_tool = tool;
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57 }
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58
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59 pub fn press(&mut self, x: f64, y: f64) -> std::io::Result<()> {
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60 self.pressed = true;
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61 self.dev.write(&[
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62 input_axis_new(AbsoluteAxis::X, (x * MAX_X as f64 / self.width) as i32),
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63 input_axis_new(AbsoluteAxis::Y, (y * MAX_Y as f64 / self.height) as i32),
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64 input_axis_new(AbsoluteAxis::Z, 0),
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65 input_axis_new(AbsoluteAxis::Wheel, 0),
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66 input_axis_new(AbsoluteAxis::Pressure, 1024),
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67 input_axis_new(AbsoluteAxis::Distance, 0),
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68 input_axis_new(AbsoluteAxis::TiltX, 16),
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69 input_axis_new(AbsoluteAxis::TiltY, 0),
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70 input_misc_new(MiscKind::Serial, 0),
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71 input_key_new(self.selected_tool, 1),
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72 input_synchronize_new(SynchronizeKind::Report, 0),
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73 ])?;
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74 Ok(())
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75 }
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76
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77 pub fn release(&mut self, x: f64, y: f64) -> std::io::Result<()> {
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78 self.pressed = false;
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79 self.dev.write(&[
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80 input_axis_new(AbsoluteAxis::X, (x * MAX_X as f64 / self.width) as i32),
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81 input_axis_new(AbsoluteAxis::Y, (y * MAX_Y as f64 / self.height) as i32),
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82 input_axis_new(AbsoluteAxis::Z, 0),
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83 input_axis_new(AbsoluteAxis::Wheel, 0),
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84 input_axis_new(AbsoluteAxis::Pressure, 0),
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85 input_axis_new(AbsoluteAxis::Distance, 16),
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86 input_axis_new(AbsoluteAxis::TiltX, 16),
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87 input_axis_new(AbsoluteAxis::TiltY, 0),
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88 input_misc_new(MiscKind::Serial, 0),
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89 input_key_new(self.selected_tool, 1),
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90 input_synchronize_new(SynchronizeKind::Report, 0),
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91 ])?;
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92 Ok(())
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93 }
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94
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95 pub fn motion(&mut self, x: f64, y: f64) -> std::io::Result<()> {
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96 self.dev.write(&[
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97 input_axis_new(AbsoluteAxis::X, (x * MAX_X as f64 / self.width) as i32),
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98 input_axis_new(AbsoluteAxis::Y, (y * MAX_Y as f64 / self.height) as i32),
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99 input_axis_new(AbsoluteAxis::Z, 0),
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100 input_axis_new(AbsoluteAxis::Wheel, 0),
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101 input_axis_new(AbsoluteAxis::Pressure, if self.pressed { 2048 } else { 0 }),
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102 input_axis_new(AbsoluteAxis::Distance, if self.pressed { 0 } else { 32 }),
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103 input_axis_new(AbsoluteAxis::TiltX, 16),
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104 input_axis_new(AbsoluteAxis::TiltY, 0),
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105 input_misc_new(MiscKind::Serial, 0),
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106 input_key_new(self.selected_tool, 1),
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107 input_synchronize_new(SynchronizeKind::Report, 0),
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108 ])?;
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109 Ok(())
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110 }
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111 }