commit 6cb66104364f10b3e41e867015a3ca831bb8a1a1
Author: darkgallium <darkgallium@deuxfleurs.fr>
Date:   Thu Dec 31 16:37:32 2020 +0100

    initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..000cefe
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,355 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "adler"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee2a4ec343196209d6594e19543ae87a39f96d5534d7174822a3ad825dd6ed7e"
+
+[[package]]
+name = "adler32"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aae1277d39aeec15cb388266ecc24b11c80469deae6067e17a1a7aa9e5c1f234"
+
+[[package]]
+name = "autocfg"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+
+[[package]]
+name = "bitflags"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+
+[[package]]
+name = "bytemuck"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41aa2ec95ca3b5c54cf73c91acf06d24f4495d5f1b1c12506ae3483d646177ac"
+
+[[package]]
+name = "byteorder"
+version = "1.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "color_quant"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
+
+[[package]]
+name = "const_fn"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd51eab21ab4fd6a3bf889e2d0958c0a6e3a61ad04260325e919e652a2a62826"
+
+[[package]]
+name = "crc32fast"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81156fece84ab6a9f2afdb109ce3ae577e42b1228441eded99bd77f627953b1a"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dca26ee1f8d361640700bde38b2c37d8c22b3ce2d360e1fc1c74ea4b0aa7d775"
+dependencies = [
+ "cfg-if",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-deque"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94af6efb46fef72616855b036a624cf27ba656ffc9be1b9a3c931cfc7749a9a9"
+dependencies = [
+ "cfg-if",
+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1aaa739f95311c2c7887a76863f500026092fb1dce0161dab577e559ef3569d"
+dependencies = [
+ "cfg-if",
+ "const_fn",
+ "crossbeam-utils",
+ "lazy_static",
+ "memoffset",
+ "scopeguard",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02d96d1e189ef58269ebe5b97953da3274d83a93af647c2ddd6f9dab28cedb8d"
+dependencies = [
+ "autocfg",
+ "cfg-if",
+ "lazy_static",
+]
+
+[[package]]
+name = "deflate"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73770f8e1fe7d64df17ca66ad28994a0a623ea497fa69486e14984e715c5d174"
+dependencies = [
+ "adler32",
+ "byteorder",
+]
+
+[[package]]
+name = "either"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
+
+[[package]]
+name = "gif"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02efba560f227847cb41463a7395c514d127d4f74fff12ef0137fff1b84b96c4"
+dependencies = [
+ "color_quant",
+ "weezl",
+]
+
+[[package]]
+name = "hermit-abi"
+version = "0.1.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5aca5565f760fb5b220e499d72710ed156fdb74e631659e99377d9ebfbd13ae8"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "image"
+version = "0.23.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ce04077ead78e39ae8610ad26216aed811996b043d47beed5090db674f9e9b5"
+dependencies = [
+ "bytemuck",
+ "byteorder",
+ "color_quant",
+ "gif",
+ "jpeg-decoder",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+ "png",
+ "scoped_threadpool",
+ "tiff",
+]
+
+[[package]]
+name = "jpeg-decoder"
+version = "0.1.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc797adac5f083b8ff0ca6f6294a999393d76e197c36488e2ef732c4715f6fa3"
+dependencies = [
+ "byteorder",
+ "rayon",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "libc"
+version = "0.2.81"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1482821306169ec4d07f6aca392a4681f66c75c9918aa49641a2595db64053cb"
+
+[[package]]
+name = "memoffset"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "157b4208e3059a8f9e78d559edc658e13df41410cb3ae03979c83130067fdd87"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "miniz_oxide"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "791daaae1ed6889560f8c4359194f56648355540573244a5448a83ba1ecc7435"
+dependencies = [
+ "adler32",
+]
+
+[[package]]
+name = "miniz_oxide"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f2d26ec3309788e423cfbf68ad1800f061638098d76a83681af979dc4eda19d"
+dependencies = [
+ "adler",
+ "autocfg",
+]
+
+[[package]]
+name = "num-integer"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2cc698a63b549a70bc047073d2949cce27cd1c7b0a4a862d08a8031bc2801db"
+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-iter"
+version = "0.1.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2021c8337a54d21aca0d59a92577a029af9431cb59b909b03252b9c164fad59"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12ac428b1cb17fce6f731001d307d351ec70a6d202fc2e60f7d4c5e42d8f4f07"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "num_cpus"
+version = "1.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
+dependencies = [
+ "hermit-abi",
+ "libc",
+]
+
+[[package]]
+name = "pkg-config"
+version = "0.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
+
+[[package]]
+name = "png"
+version = "0.16.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c3287920cb847dee3de33d301c463fba14dda99db24214ddf93f83d3021f4c6"
+dependencies = [
+ "bitflags",
+ "crc32fast",
+ "deflate",
+ "miniz_oxide 0.3.7",
+]
+
+[[package]]
+name = "rayon"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b0d8e0819fadc20c74ea8373106ead0600e3a67ef1fe8da56e39b9ae7275674"
+dependencies = [
+ "autocfg",
+ "crossbeam-deque",
+ "either",
+ "rayon-core",
+]
+
+[[package]]
+name = "rayon-core"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ab346ac5921dc62ffa9f89b7a773907511cdfa5490c572ae9be1be33e8afa4a"
+dependencies = [
+ "crossbeam-channel",
+ "crossbeam-deque",
+ "crossbeam-utils",
+ "lazy_static",
+ "num_cpus",
+]
+
+[[package]]
+name = "scoped_threadpool"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d51f5df5af43ab3f1360b429fa5e0152ac5ce8c0bd6485cae490332e96846a8"
+
+[[package]]
+name = "scopeguard"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+
+[[package]]
+name = "shutter-rs"
+version = "0.1.0"
+dependencies = [
+ "image",
+ "x11",
+]
+
+[[package]]
+name = "tiff"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a53f4706d65497df0c4349241deddf35f84cee19c87ed86ea8ca590f4464437"
+dependencies = [
+ "jpeg-decoder",
+ "miniz_oxide 0.4.3",
+ "weezl",
+]
+
+[[package]]
+name = "weezl"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e2bb9fc8309084dd7cd651336673844c1d47f8ef6d2091ec160b27f5c4aa277"
+
+[[package]]
+name = "x11"
+version = "2.18.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77ecd092546cb16f25783a5451538e73afc8d32e242648d54f4ae5459ba1e773"
+dependencies = [
+ "libc",
+ "pkg-config",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..ef01889
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "shutter-rs"
+version = "0.1.0"
+authors = ["darkgallium <darkgallium@deuxfleurs.fr>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+image = "0.23.12"
+x11 = { version = "2.18", features = [ "xlib", "xss" ] }
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..522c4fa
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,100 @@
+use x11::xlib::{XGrabPointer, XCreateFontCursor, XOpenDisplay, Display, XDefaultRootWindow, XAllPlanes, ZPixmap, XGetImage, ButtonMotionMask, ButtonPressMask, ButtonReleaseMask, CurrentTime, GrabModeAsync, GrabSuccess, XNextEvent, XEvent, XPending, ButtonPress, ButtonRelease, XButtonEvent, XGrabKeyboard, KeyPress, XKeyEvent};
+use std::mem::MaybeUninit;
+use image::RgbaImage;
+use std::convert::TryInto;
+
+#[derive(Debug)]
+struct Position {
+  origin_x: u32,
+  origin_y: u32,
+  height: u32,
+  width: u32,
+}
+
+fn screenshot(pos: &Position) {
+    unsafe {
+      let display: *mut Display = XOpenDisplay(std::ptr::null());
+      let root_window = XDefaultRootWindow(display);
+
+      let ximg = XGetImage(display, root_window, pos.origin_x.try_into().unwrap(), pos.origin_y.try_into().unwrap(), pos.width.try_into().unwrap(), pos.height.try_into().unwrap(), XAllPlanes(), ZPixmap);
+      let len = pos.height*pos.width*4;
+      let v = Vec::<u8>::from_raw_parts((*ximg).data as *mut _, len.try_into().unwrap(), len.try_into().unwrap());
+      //println!("{:?}", v);
+      let img = RgbaImage::from_raw(pos.width, pos.height, v).unwrap();
+
+      img.save("empty.jpg").unwrap();
+    }
+
+}
+
+// https://bbs.archlinux.org/viewtopic.php?id=85378
+fn trigger_selection() -> Option<Position> {
+
+    unsafe {
+      let display: *mut Display = XOpenDisplay(std::ptr::null());
+      let root_window = XDefaultRootWindow(display);
+      
+      let c = XCreateFontCursor(display, 130); // XC_tcross = 130
+      let button_mask = ButtonMotionMask as u32 | ButtonPressMask as u32 | ButtonReleaseMask as u32;
+ 
+      if XGrabPointer(display, root_window, 0, button_mask, GrabModeAsync, GrabModeAsync, root_window, c, CurrentTime) != GrabSuccess {
+        panic!("could not grab");
+      }
+
+      if XGrabKeyboard(display, root_window, 0, GrabModeAsync, GrabModeAsync, CurrentTime) != GrabSuccess {
+        panic!("could not grab");
+      }
+
+      let mut pos = Position { origin_x: 0, origin_y: 0, width: 0, height: 0};
+
+      'main: loop {
+        while XPending(display) > 0 {
+          let mut e: MaybeUninit<XEvent> = MaybeUninit::uninit();
+          XNextEvent(display, e.as_mut_ptr());
+
+          let event = unsafe { e.assume_init() };
+          match event.type_ {
+            KeyPress => {
+               let event = XKeyEvent::from(event);
+               if event.keycode == 9 { // escape keycode (xev)
+                  return None;
+               }
+            },
+            ButtonPress => {
+               let event = XButtonEvent::from(event);
+               println!("origin = ({},{})", event.x, event.y);
+               pos.origin_x = event.x_root.try_into().unwrap();
+               pos.origin_y = event.y_root.try_into().unwrap();
+            },
+            ButtonRelease => {
+                // assuming that the upper left corner is the origin
+                let event = XButtonEvent::from(event);
+                let x: u32 = event.x_root.try_into().unwrap();
+                let y: u32 = event.y_root.try_into().unwrap();
+
+                pos.width = x - pos.origin_x;
+                pos.height = y - pos.origin_y;
+                
+                if pos.height == 0 || pos.width == 0 {
+                  return None
+                }
+
+                return Some(pos);
+            }
+            _ => { println!("type unknown: {}", event.type_); }
+          }
+        }
+      }
+
+    }
+
+
+}
+
+fn main() {
+  let s = trigger_selection();
+  println!("{:?}", s);
+  if let Some(select) = s {
+    screenshot(&select);
+  }
+}