Mercurial > tablet-emu

annotate src/main.rs @ 4:2e074d185151

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Simplify tool buttons.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Fri, 09 Oct 2020 16:13:25 +0200
parents 72e63d6a3f8a
children cdbf3a2c9af8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
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1 use gio::prelude::*;
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2 use gtk::prelude::*;
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3
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4 use std::env::args;
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5 use std::fs::{File, OpenOptions};
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6 use std::io::ErrorKind;
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7 use std::sync::{Arc, Mutex};
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8
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9 use input_linux::{
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10 sys::input_event, sys::timeval, AbsoluteAxis, AbsoluteInfo, AbsoluteInfoSetup, EventKind,
1
6dbe2bbeef70 Improve input event types with helper functions.
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11 InputId, InputProperty, Key, MiscKind, SynchronizeKind, UInputHandle,
0
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12 };
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13
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14 const WIDTH: i32 = 320;
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15 const HEIGHT: i32 = 180;
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16
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17 const MAX_X: i32 = 69920;
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18 const MAX_Y: i32 = 39980;
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19
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20 fn create_uinput_device() -> std::io::Result<UInputHandle<File>> {
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21 let file = OpenOptions::new().write(true).open("/dev/uinput")?;
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22 let dev = UInputHandle::new(file);
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23
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24 dev.set_evbit(EventKind::Synchronize)?;
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25 dev.set_evbit(EventKind::Key)?;
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26 dev.set_evbit(EventKind::Absolute)?;
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27 dev.set_evbit(EventKind::Misc)?;
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28 dev.set_keybit(Key::ButtonToolPen)?;
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29 dev.set_keybit(Key::ButtonToolRubber)?;
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30 dev.set_keybit(Key::ButtonToolBrush)?;
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31 dev.set_keybit(Key::ButtonToolPencil)?;
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32 dev.set_keybit(Key::ButtonToolAirbrush)?;
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33 dev.set_keybit(Key::ButtonTouch)?;
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34 dev.set_keybit(Key::ButtonStylus)?;
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35 dev.set_keybit(Key::ButtonStylus2)?;
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36 dev.set_keybit(Key::ButtonStylus3)?;
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37 dev.set_mscbit(MiscKind::Serial)?;
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38 dev.set_propbit(InputProperty::Direct)?;
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39
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40 dev.set_absbit(AbsoluteAxis::X)?;
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41 dev.set_absbit(AbsoluteAxis::Y)?;
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42 dev.set_absbit(AbsoluteAxis::Z)?;
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43 dev.set_absbit(AbsoluteAxis::Wheel)?;
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44 dev.set_absbit(AbsoluteAxis::Pressure)?;
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45 dev.set_absbit(AbsoluteAxis::Distance)?;
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46 dev.set_absbit(AbsoluteAxis::TiltX)?;
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47 dev.set_absbit(AbsoluteAxis::TiltY)?;
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48 dev.set_absbit(AbsoluteAxis::Misc)?;
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49
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50 let id = InputId {
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51 bustype: 3,
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52 vendor: 0x56a,
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53 product: 0x350,
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54 version: 0xb,
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55 };
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56
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57 let x = AbsoluteInfoSetup {
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58 axis: AbsoluteAxis::X,
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59 info: AbsoluteInfo {
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60 value: 0,
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61 minimum: 0,
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62 maximum: MAX_X,
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63 fuzz: 0,
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64 flat: 0,
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65 resolution: 200,
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66 },
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67 };
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68 let y = AbsoluteInfoSetup {
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69 axis: AbsoluteAxis::Y,
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70 info: AbsoluteInfo {
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71 value: 0,
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72 minimum: 0,
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73 maximum: MAX_Y,
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74 fuzz: 0,
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75 flat: 0,
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76 resolution: 200,
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77 },
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78 };
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79 let z = AbsoluteInfoSetup {
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80 axis: AbsoluteAxis::Z,
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81 info: AbsoluteInfo {
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82 value: 0,
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83 minimum: -900,
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84 maximum: 899,
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85 fuzz: 0,
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86 flat: 0,
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87 resolution: 287,
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88 },
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89 };
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90 let wheel = AbsoluteInfoSetup {
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91 axis: AbsoluteAxis::Wheel,
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92 info: AbsoluteInfo {
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93 value: 0,
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94 minimum: 0,
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95 maximum: 2047,
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96 fuzz: 0,
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97 flat: 0,
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98 resolution: 0,
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99 },
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100 };
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101 let pressure = AbsoluteInfoSetup {
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102 axis: AbsoluteAxis::Pressure,
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103 info: AbsoluteInfo {
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104 value: 0,
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105 minimum: 0,
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106 maximum: 8196,
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107 fuzz: 0,
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108 flat: 0,
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109 resolution: 0,
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110 },
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111 };
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112 let distance = AbsoluteInfoSetup {
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113 axis: AbsoluteAxis::Distance,
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114 info: AbsoluteInfo {
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115 value: 0,
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116 minimum: 0,
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117 maximum: 63,
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118 fuzz: 0,
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119 flat: 0,
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120 resolution: 0,
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121 },
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122 };
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123 let tilt_x = AbsoluteInfoSetup {
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124 axis: AbsoluteAxis::TiltX,
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125 info: AbsoluteInfo {
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126 value: 0,
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127 minimum: -64,
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128 maximum: 63,
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129 fuzz: 0,
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130 flat: 0,
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131 resolution: 57,
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132 },
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133 };
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134 let tilt_y = AbsoluteInfoSetup {
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135 axis: AbsoluteAxis::TiltY,
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136 info: AbsoluteInfo {
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137 value: 0,
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138 minimum: -64,
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139 maximum: 63,
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140 fuzz: 0,
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141 flat: 0,
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142 resolution: 57,
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143 },
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144 };
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145 let misc = AbsoluteInfoSetup {
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146 axis: AbsoluteAxis::Misc,
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147 info: AbsoluteInfo {
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148 value: 0,
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149 minimum: 0,
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150 maximum: 0,
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151 fuzz: 0,
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152 flat: 0,
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153 resolution: 0,
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154 },
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155 };
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156
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157 dev.create(
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158 &id,
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159 b"TabletEmu",
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160 0,
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161 &[x, y, z, wheel, pressure, distance, tilt_x, tilt_y, misc],
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162 )?;
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163 Ok(dev)
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164 }
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165
1
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166 fn input_event_new(type_: EventKind, code: u16, value: i32) -> input_event {
0
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167 input_event {
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168 time: timeval {
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169 tv_sec: 0,
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170 tv_usec: 0,
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171 },
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172 type_: type_ as u16,
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173 code,
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174 value,
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175 }
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176 }
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177
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178 fn input_axis_new(code: AbsoluteAxis, value: i32) -> input_event {
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179 input_event_new(EventKind::Absolute, code as u16, value)
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180 }
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181
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182 fn input_key_new(code: Key, value: i32) -> input_event {
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183 input_event_new(EventKind::Key, code as u16, value)
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184 }
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185
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186 fn input_misc_new(code: MiscKind, value: i32) -> input_event {
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187 input_event_new(EventKind::Misc, code as u16, value)
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188 }
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189
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190 fn input_synchronize_new(code: SynchronizeKind, value: i32) -> input_event {
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191 input_event_new(EventKind::Synchronize, code as u16, value)
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192 }
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193
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194 struct State {
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195 dev: UInputHandle<File>,
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196 width: f64,
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197 height: f64,
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198 selected_tool: Key,
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199 pressed: bool,
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200 }
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201
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202 fn build_ui(application: &gtk::Application) {
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203 let dev = match create_uinput_device() {
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204 Ok(dev) => dev,
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205 Err(err) => {
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206 match err.kind() {
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207 ErrorKind::NotFound => {
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208 eprintln!("Couldn’t find /dev/uinput: {}", err);
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209 eprintln!("Maybe you forgot to `modprobe uinput`?");
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210 }
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211 ErrorKind::PermissionDenied => {
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212 eprintln!("Couldn’t open /dev/uinput for writing: {}", err);
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213 eprintln!("Maybe you aren’t allowed to create input devices?");
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214 }
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215 _ => eprintln!("Couldn’t open /dev/uinput for writing: {}", err),
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216 }
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217 return;
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218 }
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219 };
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220 println!(
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221 "New device at {:?} ({:?})",
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222 dev.evdev_path().unwrap(),
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223 dev.sys_path().unwrap()
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224 );
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225
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226 let state = Arc::new(Mutex::new(State {
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227 dev,
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228 width: WIDTH as f64,
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229 height: HEIGHT as f64,
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230 selected_tool: Key::ButtonToolPen,
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231 pressed: false,
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232 }));
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233
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234 let window = gtk::ApplicationWindow::new(application);
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235
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236 window.set_title("tablet-emu");
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237 window.set_position(gtk::WindowPosition::Center);
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238
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239 let hbox = gtk::Box::new(gtk::Orientation::Horizontal, 0);
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240 let tools_box = gtk::Box::new(gtk::Orientation::Vertical, 0);
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241
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242 macro_rules! impl_tool {
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243 ($tool:tt) => {
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244 let tool = gtk::Button::with_label($tool);
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245 let state_weak = Arc::downgrade(&state);
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246 tool.connect_clicked(move |b| {
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247 let state = state_weak.upgrade().unwrap();
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248 let mut state = state.lock().unwrap();
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249 state.selected_tool = match b.get_label().unwrap().as_str() {
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250 "Pen" => Key::ButtonToolPen,
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251 "Rubber" => Key::ButtonToolRubber,
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252 "Brush" => Key::ButtonToolBrush,
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253 "Pencil" => Key::ButtonToolPencil,
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254 "Airbrush" => Key::ButtonToolAirbrush,
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255 _ => unreachable!(),
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256 };
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257 });
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258 tools_box.add(&tool);
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259 };
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260 };
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261 impl_tool!("Pen");
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262 impl_tool!("Rubber");
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263 impl_tool!("Brush");
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264 impl_tool!("Pencil");
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265 impl_tool!("Airbrush");
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266
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267 let drawing_area = gtk::DrawingArea::new();
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268 drawing_area.set_size_request(WIDTH, HEIGHT);
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269 drawing_area.set_hexpand(true);
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270 drawing_area.set_events(
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271 gdk::EventMask::BUTTON_PRESS_MASK
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272 | gdk::EventMask::BUTTON_RELEASE_MASK
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273 | gdk::EventMask::POINTER_MOTION_MASK,
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274 );
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275 let state_weak = Arc::downgrade(&state);
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276 drawing_area.connect_configure_event(move |_, event| {
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277 let state = state_weak.upgrade().unwrap();
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278 let mut state = state.lock().unwrap();
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279 match event.get_size() {
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280 (width, height) => {
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281 state.width = width as f64;
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282 state.height = height as f64;
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283 }
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284 }
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285 true
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286 });
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287 let state_weak = Arc::downgrade(&state);
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288 drawing_area.connect_button_press_event(move |_, event| {
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289 if event.get_button() != 1 {
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290 return Inhibit(false);
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291 }
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292
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293 let state = state_weak.upgrade().unwrap();
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294 let mut state = state.lock().unwrap();
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295 state.pressed = true;
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296 let (x, y) = event.get_position();
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297 //println!("press tool {} at {}, {}", current_tool.lock().unwrap(), x, y);
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298 state.dev.write(&[
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299 input_axis_new(AbsoluteAxis::X, (x * MAX_X as f64 / state.width) as i32),
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300 input_axis_new(AbsoluteAxis::Y, (y * MAX_Y as f64 / state.height) as i32),
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301 input_axis_new(AbsoluteAxis::Z, 0),
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302 input_axis_new(AbsoluteAxis::Wheel, 0),
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303 input_axis_new(AbsoluteAxis::Pressure, 1024),
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304 input_axis_new(AbsoluteAxis::Distance, 0),
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305 input_axis_new(AbsoluteAxis::TiltX, 16),
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306 input_axis_new(AbsoluteAxis::TiltY, 0),
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307 input_misc_new(MiscKind::Serial, 0),
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308 input_key_new(state.selected_tool, 1),
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309 input_synchronize_new(SynchronizeKind::Report, 0),
0
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310 ])
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311 .unwrap();
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312 Inhibit(false)
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313 });
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314 let state_weak = Arc::downgrade(&state);
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315 drawing_area.connect_button_release_event(move |_, event| {
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316 if event.get_button() != 1 {
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317 return Inhibit(false);
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318 }
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319
3
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320 let state = state_weak.upgrade().unwrap();
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321 let mut state = state.lock().unwrap();
0
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322 let (x, y) = event.get_position();
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323 state.pressed = false;
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324 //println!("release {}, {}", x, y);
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325 state.dev.write(&[
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326 input_axis_new(AbsoluteAxis::X, (x * MAX_X as f64 / state.width) as i32),
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327 input_axis_new(AbsoluteAxis::Y, (y * MAX_Y as f64 / state.height) as i32),
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328 input_axis_new(AbsoluteAxis::Z, 0),
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329 input_axis_new(AbsoluteAxis::Wheel, 0),
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330 input_axis_new(AbsoluteAxis::Pressure, 0),
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331 input_axis_new(AbsoluteAxis::Distance, 16),
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332 input_axis_new(AbsoluteAxis::TiltX, 16),
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333 input_axis_new(AbsoluteAxis::TiltY, 0),
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334 input_misc_new(MiscKind::Serial, 0),
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335 input_key_new(state.selected_tool, 1),
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336 input_synchronize_new(SynchronizeKind::Report, 0),
0
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337 ])
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338 .unwrap();
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339 Inhibit(false)
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340 });
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341 drawing_area.connect_motion_notify_event(move |_, event| {
3
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342 let state = state.lock().unwrap();
0
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343 let (x, y) = event.get_position();
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344 //println!("motion {}, {}", x, y);
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345 state.dev.write(&[
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346 input_axis_new(AbsoluteAxis::X, (x * MAX_X as f64 / state.width) as i32),
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347 input_axis_new(AbsoluteAxis::Y, (y * MAX_Y as f64 / state.height) as i32),
1
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348 input_axis_new(AbsoluteAxis::Z, 0),
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349 input_axis_new(AbsoluteAxis::Wheel, 0),
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350 input_axis_new(AbsoluteAxis::Pressure, if state.pressed { 2048 } else { 0 }),
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351 input_axis_new(AbsoluteAxis::Distance, if state.pressed { 0 } else { 32 }),
1
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352 input_axis_new(AbsoluteAxis::TiltX, 16),
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353 input_axis_new(AbsoluteAxis::TiltY, 0),
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354 input_misc_new(MiscKind::Serial, 0),
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355 input_key_new(state.selected_tool, 1),
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356 input_synchronize_new(SynchronizeKind::Report, 0),
0
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357 ])
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358 .unwrap();
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359 Inhibit(false)
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360 });
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361 drawing_area.connect_draw(move |_, ctx| {
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362 //println!("drawing {}", drawing_area);
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363 ctx.set_source_rgb(1., 0., 0.);
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364 ctx.set_operator(cairo::Operator::Screen);
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365 ctx.paint();
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366 Inhibit(false)
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367 });
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368
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369 hbox.add(&tools_box);
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370 hbox.add(&drawing_area);
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371
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372 window.add(&hbox);
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373
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374 window.show_all();
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375 }
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376
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377 fn main() {
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378 let application = gtk::Application::new(
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379 Some("fr.linkmauve.TabletEmu"),
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380 gio::ApplicationFlags::empty(),
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381 )
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382 .expect("Initialisation failed…");
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383 application.connect_activate(build_ui);
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384 application.run(&args().collect::<Vec<_>>());
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385 }