Add flake

Reviewed-on: michael/leanshot#2

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -1,3 +1,6 @@
 /target
 **/*.rs.bk
 shiet.*
+/v*.tar.gz
+.direnv
+/result*

Cargo.lock

@@ -117,6 +117,17 @@ dependencies = [
  "byteorder",
 ]
 
+[[package]]
+name = "gl_generator"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a95dfc23a2b4a9a2f5ab41d194f8bfda3cabec42af4e39f08c339eb2a0c124d"
+dependencies = [
+ "khronos_api",
+ "log",
+ "xml-rs",
+]
+
 [[package]]
 name = "heck"
 version = "0.3.3"
@@ -157,6 +168,12 @@ version = "0.1.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "229d53d58899083193af11e15917b5640cd40b29ff475a1fe4ef725deb02d0f2"
 
+[[package]]
+name = "khronos_api"
+version = "3.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2db585e1d738fc771bf08a151420d3ed193d9d895a36df7f6f8a9456b911ddc"
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -169,6 +186,7 @@ version = "0.5.0"
 dependencies = [
  "anyhow",
  "image",
+ "leanshot-x11",
  "libc",
  "log",
  "stderrlog",
@@ -177,6 +195,18 @@ dependencies = [
  "xcb-util",
 ]
 
+[[package]]
+name = "leanshot-x11"
+version = "0.0.5"
+dependencies = [
+ "bitflags",
+ "gl_generator",
+ "libc",
+ "log",
+ "thiserror",
+ "x11",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.98"
@@ -242,6 +272,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[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"
@@ -368,6 +404,26 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93119e4feac1cbe6c798c34d3a53ea0026b0b1de6a120deef895137c0529bfe2"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "060d69a0afe7796bf42e9e2ff91f5ee691fb15c53d38b4b62a9a53eb23164745"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "thread_local"
 version = "1.0.1"
@@ -455,6 +511,16 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "x11"
+version = "2.18.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77ecd092546cb16f25783a5451538e73afc8d32e242648d54f4ae5459ba1e773"
+dependencies = [
+ "libc",
+ "pkg-config",
+]
+
 [[package]]
 name = "xcb"
 version = "0.9.0"
@@ -474,3 +540,9 @@ dependencies = [
  "libc",
  "xcb",
 ]
+
+[[package]]
+name = "xml-rs"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b07db065a5cf61a7e4ba64f29e67db906fb1787316516c4e6e5ff0fea1efcd8a"

Cargo.toml

@@ -7,12 +7,30 @@ license = "MIT"
 edition = "2018"
 authors = ["Michael Zhang <mail@mzhang.io>"]
 
+[workspace]
+members = ["x11"]
+
+[features]
+default = ["backend-x11", "backend-x11-glx"]
+backend-x11 = ["leanshot-x11"]
+backend-x11-glx = ["backend-x11", "leanshot-x11/glx"]
+backend-xcb = ["xcb-util", "xcb"]
+backend-wayland = []
+
 [dependencies]
-anyhow = "1.0.38"
-image = { version = "0.23.13", default-features = false, features = ["jpeg", "png"] }
+anyhow = "1.0.42"
+image = { version = "0.23.14", default-features = false, features = ["jpeg", "png"] }
 log = "0.4.14"
 stderrlog = "0.5.1"
-xcb-util = { version = "0.3.0", features = ["image", "cursor"] }
-xcb = "0.9.0"
-structopt = "0.3.21"
-libc = "0.2.86"
+structopt = "0.3.22"
+libc = "0.2.98"
+
+# x11
+leanshot-x11 = { path = "x11", optional = true }
+
+# xcb
+xcb-util = { version = "0.3.0", features = ["image", "cursor"], optional = true }
+xcb = { version = "0.9.0", optional = true }
+
+# wayland
+

LICENSE

@@ -1,4 +1,4 @@
-Copyright 2018-2020 Michael Zhang
+Copyright 2018-2021 Michael Zhang
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in

PKGBUILD

@@ -0,0 +1,23 @@
+# Maintainer: Michael Zhang <mail@mzhang.io>
+
+pkgname=leanshot
+pkgver=0.5.0
+pkgrel=1
+pkgdesc='Screen capture for Linux.'
+url='https://git.mzhang.io/michael/leanshot'
+arch=('any')
+license=('MIT')
+makedepends=('python3')
+depends=('rust' 'libxcb' 'xcb-util-image')
+source=("leanshot-v${pkgver}.tar.gz::https://git.mzhang.io/michael/${pkgname}/archive/v${pkgver}.tar.gz")
+sha256sums=('9883649c13e61ac93b45daf29227bda959566c004fd4f65aef8139e7d6050986')
+
+build() {
+    cd "${pkgname}"
+    cargo build --release --locked --all-features --target-dir=target
+}
+
+package() {
+    cd "${pkgname}"
+    install -Dm 755 target/release/${pkgname} -t ${pkgdir}/usr/bin
+}

default.nix

@@ -0,0 +1,12 @@
+{ toolchain, makeRustPlatform, pkg-config }:
+
+let rustPlatform = makeRustPlatform { inherit (toolchain) cargo rustc; };
+
+in rustPlatform.buildRustPackage {
+  name = "liveterm";
+  src = ./.;
+  cargoLock.lockFile = ./Cargo.lock;
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ ];
+}

flake.lock

@@ -0,0 +1,93 @@
+{
+  "nodes": {
+    "fenix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1675146246,
+        "narHash": "sha256-upQtcca/sThA5Jkmn5pDaYFoCmPLMyv7bGFCZFcVhqM=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "97deb5c86b238c2a000ef4eb92fb40465f086706",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-utils",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1674641431,
+        "narHash": "sha256-qfo19qVZBP4qn5M5gXc/h1MDgAtPA5VxJm9s8RUAkVk=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "9b97ad7b4330aacda9b2343396eb3df8a853b4fc",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1667629849,
+        "narHash": "sha256-P+v+nDOFWicM4wziFK9S/ajF2lc0N2Rg9p6Y35uMoZI=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "3bacde6273b09a21a8ccfba15586fb165078fb62",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "fenix": "fenix",
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs_2"
+      }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1675097868,
+        "narHash": "sha256-BKFLjEzdoFWso7Artln7djf8RbtBynj9wZKIj22LV5g=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "b75803ad31772d105d86f8ebee0cbc8844a4fa29",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,33 @@
+{
+  inputs = { fenix.url = "github:nix-community/fenix"; };
+
+  outputs = { self, nixpkgs, flake-utils, fenix }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [ fenix.overlays.default ];
+        };
+
+        toolchain = pkgs.fenix.stable;
+
+        flakePkgs = { leanshot = pkgs.callPackage ./. { inherit toolchain; }; };
+      in rec {
+        packages = flake-utils.lib.flattenTree flakePkgs;
+        defaultPackage = packages.leanshot;
+
+        devShell = pkgs.mkShell {
+          inputsFrom = with packages; [ leanshot ];
+          packages = (with pkgs; [ cargo-watch cargo-deny cargo-edit ])
+            ++ (with toolchain; [ cargo rustc rustfmt ]);
+
+          CARGO_UNSTABLE_SPARSE_REGISTRY = "true";
+          PKG_CONFIG_PATH = let
+            standardPkgs = pkgs.lib.makeSearchPathOutput "dev" "lib/pkgconfig"
+              (with pkgs; [ libGL xorg.libX11 ]);
+            otherPkgs = pkgs.lib.makeSearchPath "pkgconfig"
+              (with pkgs; [ "${xorg.xorgproto}/share" ]);
+          in "${standardPkgs}:${otherPkgs}";
+        };
+      });
+}

src/gui_trait.rs

@@ -0,0 +1,19 @@
+use std::path::Path;
+
+use anyhow::Result;
+
+use crate::rect::Rectangle;
+
+pub trait Gui {
+    type Capture: Capture;
+    fn capture_entire_screen(&self) -> Result<Self::Capture>;
+    fn interactive_select(&self, capture: &Self::Capture) -> Result<Option<Rectangle>>;
+}
+
+pub trait Capture {
+    fn save_to(&self, to: impl AsRef<Path>) -> Result<()> {
+        self.save_cropped_to(to, None)
+    }
+
+    fn save_cropped_to(&self, path: impl AsRef<Path>, section: Option<Rectangle>) -> Result<()>;
+}

src/gui_wayland.rs

@@ -0,0 +1,34 @@
+use std::path::Path;
+
+use anyhow::Result;
+
+use crate::gui_trait::{Capture, Gui};
+use crate::rect::Rectangle;
+
+pub struct WaylandGui {}
+
+impl WaylandGui {
+    pub fn new() -> Result<Self> {
+        todo!()
+    }
+}
+
+impl Gui for WaylandGui {
+    type Capture = ScreenCapture;
+
+    fn capture_entire_screen(&self) -> Result<Self::Capture> {
+        todo!()
+    }
+
+    fn interactive_select(&self, _: &Self::Capture) -> Result<Option<Rectangle>> {
+        todo!()
+    }
+}
+
+pub struct ScreenCapture {}
+
+impl Capture for ScreenCapture {
+    fn save_cropped_to(&self, to: impl AsRef<Path>, section: Option<Rectangle>) -> Result<()> {
+        todo!()
+    }
+}

src/gui_x11.rs

@@ -0,0 +1,79 @@
+use std::path::Path;
+
+use anyhow::Result;
+use image::{Bgra, DynamicImage, ImageBuffer};
+use x11::xlib::{Display, Image as XImage, Screen};
+
+use crate::gui_trait::{Capture, Gui};
+use crate::rect::Rectangle;
+
+pub struct X11Gui {
+    conn: Display,
+}
+
+impl X11Gui {
+    pub fn new() -> Result<Self> {
+        let disp = Display::connect(None)?;
+        Ok(X11Gui { conn: disp })
+    }
+
+    fn get_default_screen(&self) -> Screen {
+        self.conn.default_screen()
+    }
+}
+
+impl Gui for X11Gui {
+    type Capture = ScreenCapture;
+
+    fn capture_entire_screen(&self) -> Result<Self::Capture> {
+        // get the dimensions of the screen
+        let screen = self.get_default_screen();
+        let (width, height) = (screen.width_in_pixels(), screen.height_in_pixels());
+
+        let root_window = self.conn.get_root_window(screen)?;
+        let image = root_window.get_image()?;
+
+        Ok(ScreenCapture { image })
+    }
+
+    fn interactive_select(&self, _: &Self::Capture) -> Result<Option<Rectangle>> {
+        todo!()
+    }
+}
+
+pub struct ScreenCapture {
+    image: XImage,
+}
+
+impl Capture for ScreenCapture {
+    fn save_cropped_to(&self, to: impl AsRef<Path>, section: Option<Rectangle>) -> Result<()> {
+        let to = to.as_ref();
+
+        let buffer = self.image.buffer();
+
+        let image = ImageBuffer::<Bgra<u8>, _>::from_raw(
+            self.image.get_width(),
+            self.image.get_height(),
+            buffer.get_buffer().to_vec(),
+        )
+        .unwrap();
+
+        let image = DynamicImage::ImageBgra8(image);
+        let mut image = DynamicImage::ImageRgb8(image.into_rgb8());
+
+        let image = if let Some(section) = section {
+            // crop the image
+            image.crop(
+                section.x as u32,
+                section.y as u32,
+                section.width as u32,
+                section.height as u32,
+            )
+        } else {
+            image
+        };
+
+        image.save(to)?;
+        Ok(())
+    }
+}

src/gui_xcb.rs

@@ -4,18 +4,21 @@ use anyhow::Result;
 use image::{Bgra, DynamicImage, ImageBuffer};
 use xcb::{
     base::Connection,
-    xproto::{self, Rectangle, Screen},
+    xproto::{self, Screen},
 };
 use xcb_util::image as xcb_image;
 
-pub struct Gui {
+use crate::gui_trait::{Capture, Gui};
+use crate::rect::Rectangle;
+
+pub struct XcbGui {
     conn: Connection,
 }
 
-impl Gui {
+impl XcbGui {
     pub fn new() -> Result<Self> {
         let (conn, _) = Connection::connect(None)?;
-        Ok(Gui { conn })
+        Ok(XcbGui { conn })
     }
 
     fn get_default_screen(&self) -> Screen {
@@ -24,8 +27,12 @@ impl Gui {
         let mut iter = setup.roots();
         iter.next().unwrap()
     }
+}
 
-    pub fn capture_entire_screen(&self) -> Result<ScreenCapture> {
+impl Gui for XcbGui {
+    type Capture = ScreenCapture;
+
+    fn capture_entire_screen(&self) -> Result<ScreenCapture> {
         // get the dimensions of the screen
         let screen = self.get_default_screen();
         let (width, height) = (screen.width_in_pixels(), screen.height_in_pixels());
@@ -45,7 +52,7 @@ impl Gui {
         Ok(ScreenCapture { image })
     }
 
-    pub fn interactive_select(&self, image: &ScreenCapture) -> Result<Option<Rectangle>> {
+    fn interactive_select(&self, image: &ScreenCapture) -> Result<Option<Rectangle>> {
         let window_id = self.conn.generate_id();
         let screen = self.get_default_screen();
         let root_window = screen.root();
@@ -196,20 +203,16 @@ impl Gui {
                         window_gc,
                         &[(xcb::GC_FOREGROUND, screen.black_pixel())],
                     );
-                    xproto::poly_rectangle(&self.conn, window_id, window_gc, &[rect]);
+                    xproto::poly_rectangle(&self.conn, window_id, window_gc, &[rect.into()]);
 
-                    let rect2 = Rectangle::new(
-                        rect.x() + 1,
-                        rect.y() + 1,
-                        rect.width() - 2,
-                        rect.height() - 2,
-                    );
+                    let rect2 =
+                        Rectangle::new(rect.x + 1, rect.y + 1, rect.width - 2, rect.height - 2);
                     xproto::change_gc(
                         &self.conn,
                         window_gc,
                         &[(xcb::GC_FOREGROUND, screen.white_pixel())],
                     );
-                    xproto::poly_rectangle(&self.conn, window_id, window_gc, &[rect2]);
+                    xproto::poly_rectangle(&self.conn, window_id, window_gc, &[rect2.into()]);
                 }
             }
 
@@ -292,12 +295,8 @@ pub struct ScreenCapture {
     image: xcb_image::Image,
 }
 
-impl ScreenCapture {
-    pub fn save_to(&self, to: impl AsRef<Path>) -> Result<()> {
-        self.save_cropped_to(to, None)
-    }
-
-    pub fn save_cropped_to(&self, to: impl AsRef<Path>, section: Option<Rectangle>) -> Result<()> {
+impl Capture for ScreenCapture {
+    fn save_cropped_to(&self, to: impl AsRef<Path>, section: Option<Rectangle>) -> Result<()> {
         let to = to.as_ref();
         let image = ImageBuffer::<Bgra<u8>, _>::from_raw(
             self.image.width() as u32,
@@ -311,10 +310,10 @@ impl ScreenCapture {
         let image = if let Some(section) = section {
             // crop the image
             image.crop(
-                section.x() as u32,
-                section.y() as u32,
-                section.width() as u32,
-                section.height() as u32,
+                section.x as u32,
+                section.y as u32,
+                section.width as u32,
+                section.height as u32,
             )
         } else {
             image

src/main.rs

@@ -3,7 +3,28 @@ extern crate log;
 #[macro_use]
 extern crate anyhow;
 
-mod gui;
+#[cfg(feature = "backend-x11")]
+extern crate leanshot_x11 as x11;
+
+#[cfg(all(feature = "backend-x11", feature = "backend-xcb"))]
+compile_error!("don't enable both x11 and xcb backends");
+#[cfg(all(feature = "backend-x11", feature = "backend-wayland"))]
+compile_error!("don't enable both x11 and wayland backends");
+#[cfg(all(feature = "backend-xcb", feature = "backend-wayland"))]
+compile_error!("don't enable both xcb and wayland backends");
+
+mod gui_trait;
+
+#[cfg(feature = "backend-xcb")]
+mod gui_xcb;
+
+#[cfg(feature = "backend-x11")]
+mod gui_x11;
+
+#[cfg(feature = "backend-wayland")]
+mod gui_wayland;
+
+mod rect;
 mod singleton;
 
 use std::path::PathBuf;
@@ -13,7 +34,7 @@ use std::str::FromStr;
 use anyhow::Result;
 use structopt::StructOpt;
 
-use crate::gui::Gui;
+use crate::gui_trait::{Capture, Gui};
 
 fn main() -> Result<()> {
     let opt = Options::from_args();
@@ -24,7 +45,26 @@ fn main() -> Result<()> {
         .init()
         .unwrap();
 
-    let gui = Gui::new()?;
+    let gui = get_gui()?;
+    run(&opt, gui)
+}
+
+#[cfg(feature = "backend-xcb")]
+fn get_gui() -> Result<crate::gui_xcb::XcbGui> {
+    crate::gui_xcb::XcbGui::new()
+}
+
+#[cfg(feature = "backend-x11")]
+fn get_gui() -> Result<crate::gui_x11::X11Gui> {
+    crate::gui_x11::X11Gui::new()
+}
+
+#[cfg(feature = "backend-wayland")]
+fn get_gui() -> Result<crate::gui_wayland::WaylandGui> {
+    crate::gui_wayland::WaylandGui::new()
+}
+
+fn run(opt: &Options, gui: impl Gui) -> Result<()> {
     let capture = gui.capture_entire_screen()?;
 
     match opt.region {

src/rect.rs

@@ -0,0 +1,37 @@
+#[derive(Clone, Copy)]
+pub struct Rectangle<T = i16, U = u16> {
+    pub x: T,
+    pub y: T,
+    pub width: U,
+    pub height: U,
+}
+
+impl<T, U> Rectangle<T, U> {
+    pub fn new(x: T, y: T, width: U, height: U) -> Self {
+        Rectangle {
+            x,
+            y,
+            width,
+            height,
+        }
+    }
+}
+
+#[cfg(feature = "backend-xcb")]
+impl From<xcb::xproto::Rectangle> for Rectangle<i16, u16> {
+    fn from(rect: xcb::xproto::Rectangle) -> Self {
+        Rectangle {
+            x: rect.x(),
+            y: rect.y(),
+            width: rect.width(),
+            height: rect.height(),
+        }
+    }
+}
+
+#[cfg(feature = "backend-xcb")]
+impl Into<xcb::xproto::Rectangle> for Rectangle<i16, u16> {
+    fn into(self) -> xcb::xproto::Rectangle {
+        xcb::xproto::Rectangle::new(self.x, self.y, self.width, self.height)
+    }
+}

src/singleton.rs

@@ -2,7 +2,6 @@ use std::fs::{self, File};
 use std::io::{Read, Write};
 use std::path::PathBuf;
 use std::process;
-use std::time::{Duration, SystemTime, UNIX_EPOCH};
 
 use anyhow::{Error, Result};
 
@@ -47,7 +46,7 @@ fn get_lock_file() -> Result<(File, PathBuf)> {
                 // let time = UNIX_EPOCH + Duration::from_millis(timestamp);
 
                 // if the process that has the lockfile open is still running, bail
-                let status = unsafe {libc::kill(pid, 0)};
+                let status = unsafe { libc::kill(pid, 0) };
 
                 // 0 means the signal was successfully sent, which means it's still running
                 // if it's 0 then we bail

x11/.gitignore

@@ -0,0 +1,2 @@
+/target
+/Cargo.lock

x11/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "leanshot-x11"
+version = "0.0.5"
+description = "Safe, high-level X11 bindings"
+license-file = "LICENSE"
+authors = ["Michael Zhang <mail@mzhang.io>"]
+edition = "2018"
+documentation = "https://docs.rs/leanshot-x11"
+readme = "README.md"
+repository = "https://git.mzhang.io/michael/leanshot"
+
+[package.metadata.docs.rs]
+all-features = true
+
+[features]
+default = ["xlib"]
+glx = ["x11/glx", "xlib", "gl_generator"]
+xlib = ["x11/xlib"]
+xrender = ["x11/xrender"]
+xinerama = ["x11/xinerama", "xlib"]
+xinput = ["x11/xinput"]
+
+[dependencies]
+libc = "0.2"
+x11 = "2.18"
+thiserror = "1.0.20"
+log = "0.4.8"
+bitflags = "1.2.1"
+
+[build-dependencies]
+gl_generator = { version = "0.14.0", optional = true }

x11/build.rs

@@ -0,0 +1,18 @@
+use std::env;
+use std::fs::File;
+use std::path::Path;
+
+#[cfg(feature = "glx")]
+use gl_generator::{Api, Fallbacks, GlobalGenerator, Profile, Registry};
+
+fn main() {
+    #[cfg(feature = "glx")]
+    {
+        let dest = env::var("OUT_DIR").unwrap();
+        let mut file = File::create(&Path::new(&dest).join("bindings.rs")).unwrap();
+
+        Registry::new(Api::Gl, (4, 5), Profile::Core, Fallbacks::All, [])
+            .write_bindings(GlobalGenerator, &mut file)
+            .unwrap();
+    }
+}

x11/src/errors.rs

@@ -0,0 +1,39 @@
+pub type Result<T, E = Error> = std::result::Result<T, E>;
+
+/// Any error that can be raised when using this library.
+#[allow(missing_docs)]
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error("no DISPLAY to connect to")]
+    NoDisplay,
+
+    #[error("invalid image byte order: {0}")]
+    InvalidByteOrder(i32),
+
+    #[error("invalid event type: {0}")]
+    InvalidEventType(i32),
+
+    #[error("failed to get attributes")]
+    GetAttributesError,
+
+    #[error("failed to create cursor")]
+    CreateCursorError,
+
+    #[error("failed to open display")]
+    DisplayOpenError,
+
+    #[error("failed to get window")]
+    GetWindowError,
+
+    #[error("failed to translate coordinates")]
+    TranslateCoordinatesError,
+
+    #[error("utf8 decoding error: {0}")]
+    Utf8(#[from] std::str::Utf8Error),
+
+    #[error("nul error: {0}")]
+    Nul(#[from] std::ffi::NulError),
+
+    #[error("error")]
+    Error,
+}

x11/src/ffi.rs

@@ -0,0 +1,15 @@
+use std::ffi::{CStr, CString};
+use std::os::raw::c_char;
+
+use crate::Result;
+
+pub unsafe fn string_from_c_char_star(ptr: *mut c_char) -> Result<String> {
+    let c_str = CStr::from_ptr(ptr);
+    let s = c_str.to_str()?;
+    Ok(s.to_owned())
+}
+
+pub fn c_char_star_from_string(s: impl AsRef<str>) -> Result<*mut c_char> {
+    let c_str = CString::new(s.as_ref().as_bytes())?;
+    Ok(c_str.into_raw())
+}

x11/src/glx/context.rs

@@ -0,0 +1,20 @@
+use x11::glx;
+
+use crate::xlib::Display;
+
+pub struct GlxContext<'a> {
+    pub(super) display: &'a Display,
+    pub(super) ctx: glx::GLXContext,
+}
+
+impl<'a> GlxContext<'a> {
+    pub fn as_raw(&self) -> glx::GLXContext {
+        self.ctx
+    }
+}
+
+impl<'a> Drop for GlxContext<'a> {
+    fn drop(&mut self) {
+        unsafe { glx::glXDestroyContext(self.display.as_raw(), self.ctx) };
+    }
+}

x11/src/glx/drawable.rs

@@ -0,0 +1,16 @@
+use x11::xlib;
+
+use crate::xlib::Window;
+
+pub enum GlxDrawable<'a> {
+    Window(Window<'a>),
+    // TODO: pixmap
+}
+
+impl<'a> GlxDrawable<'a> {
+    pub fn as_raw(&self) -> xlib::XID {
+        match self {
+            GlxDrawable::Window(window) => window.as_raw(),
+        }
+    }
+}

x11/src/glx/mod.rs

@@ -0,0 +1,66 @@
+//! An extension that bridges X11 with OpenGL, an API used for rendering
+//! graphics with the GPU.
+
+mod context;
+mod drawable;
+
+use x11::glx;
+
+use crate::errors::Result;
+use crate::xlib::{Display, VisualInfo};
+
+pub use self::context::GlxContext;
+pub use self::drawable::GlxDrawable;
+
+pub trait GlxExtension {
+    /// Checks if glx is available in this implementation.
+    fn query_glx_extension(&self) -> Result<bool>;
+
+    fn create_context(
+        &self,
+        visual_info: &VisualInfo,
+        share_list: Option<&GlxContext>,
+        direct: bool,
+    ) -> Result<GlxContext>;
+
+    fn make_current(&self, drawable: GlxDrawable, ctx: GlxContext) -> Result<()>;
+
+    fn choose_visual(&self, screen: i32) -> Result<VisualInfo>;
+}
+
+impl GlxExtension for Display {
+    fn query_glx_extension(&self) -> Result<bool> {
+        let result = unsafe { glx::glXQueryExtension(self.inner, 0 as *mut _, 0 as *mut _) };
+        Ok(result == 1)
+    }
+
+    fn create_context(
+        &self,
+        visual_info: &VisualInfo,
+        share_list: Option<&GlxContext>,
+        direct: bool,
+    ) -> Result<GlxContext> {
+        let share_list = share_list
+            .map(|ctx| ctx.as_raw())
+            .unwrap_or_else(|| 0 as *mut _);
+        let ctx = unsafe {
+            glx::glXCreateContext(
+                self.as_raw(),
+                visual_info.as_raw(),
+                share_list,
+                direct.into(),
+            )
+        };
+        Ok(GlxContext { display: self, ctx })
+    }
+
+    fn make_current(&self, drawable: GlxDrawable, ctx: GlxContext) -> Result<()> {
+        unsafe { glx::glXMakeCurrent(self.as_raw(), drawable.as_raw(), ctx.as_raw()) };
+        Ok(())
+    }
+
+    fn choose_visual(&self, screen: i32) -> Result<VisualInfo> {
+        let visual = unsafe { glx::glXChooseVisual(self.as_raw(), screen, 0 as *mut _) };
+        Ok(VisualInfo::from_raw(visual))
+    }
+}

x11/src/lib.rs

@@ -0,0 +1,36 @@
+//! Higher level bindings to x11.
+
+#[macro_use]
+extern crate bitflags;
+#[macro_use]
+extern crate thiserror;
+#[macro_use]
+extern crate log;
+
+pub extern crate x11;
+
+#[cfg(feature = "glx")]
+mod gl {
+    include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
+}
+#[cfg(feature = "glx")]
+pub mod glx;
+
+#[cfg(feature = "xinput")]
+pub mod xinput;
+
+#[cfg(feature = "xlib")]
+pub mod xlib;
+
+#[cfg(feature = "xrender")]
+pub mod xrender;
+
+#[cfg(feature = "xinerama")]
+pub mod xinerama;
+
+mod errors;
+mod ffi;
+mod rect;
+
+pub use crate::errors::{Error, Result};
+pub use crate::rect::Rectangle;

x11/src/rect.rs

@@ -0,0 +1,35 @@
+/// A rectangle.
+#[derive(Debug)]
+pub struct Rectangle {
+    /// x
+    pub x: i32,
+    /// y
+    pub y: i32,
+    /// width
+    pub width: u32,
+    /// height
+    pub height: u32,
+}
+
+impl Rectangle {
+    /// Create a new Rectangle from u32s
+    pub fn new(x: i32, y: i32, width: u32, height: u32) -> Self {
+        Rectangle {
+            x,
+            y,
+            width,
+            height,
+        }
+    }
+}
+
+impl From<(i32, i32, u32, u32)> for Rectangle {
+    fn from((x, y, width, height): (i32, i32, u32, u32)) -> Self {
+        Rectangle {
+            x,
+            y,
+            width,
+            height,
+        }
+    }
+}

x11/src/xinerama/mod.rs

@@ -0,0 +1,6 @@
+//! An extension that enables applications and window managers to use two or
+//! more physical displays as one large virtual display.
+
+mod screen_info;
+
+pub use self::screen_info::ScreensInfo;

x11/src/xinerama/screen_info.rs

@@ -0,0 +1,64 @@
+use x11::xinerama;
+
+use crate::errors::Result;
+use crate::xlib::Display;
+
+pub struct ScreensInfo {
+    inner: *mut xinerama::XineramaScreenInfo,
+    heads: isize,
+}
+
+impl ScreensInfo {
+    pub fn query(display: &Display) -> Result<Self> {
+        let mut heads = 0;
+        let inner = unsafe { xinerama::XineramaQueryScreens(display.inner, &mut heads as *mut _) };
+        // TODO: check for error
+        Ok(ScreensInfo {
+            inner,
+            heads: heads as isize,
+        })
+    }
+
+    pub fn iter(&self) -> ScreenInfoIter {
+        ScreenInfoIter(self, 0)
+    }
+}
+
+impl Drop for ScreensInfo {
+    fn drop(&mut self) {
+        unsafe { x11::xlib::XFree(self.inner as *mut _) };
+    }
+}
+
+pub struct ScreenInfoIter<'a>(&'a ScreensInfo, isize);
+
+pub struct ScreenInfo {
+    pub x: i16,
+    pub y: i16,
+    pub width: i16,
+    pub height: i16,
+}
+
+impl<'a> Iterator for ScreenInfoIter<'a> {
+    type Item = (i32, ScreenInfo);
+    fn next(&mut self) -> Option<Self::Item> {
+        if self.1 >= self.0.heads {
+            return None;
+        }
+
+        let screen = unsafe { self.0.inner.offset(self.1) };
+        self.1 += 1;
+
+        unsafe {
+            Some((
+                (*screen).screen_number as i32,
+                ScreenInfo {
+                    x: (*screen).x_org as i16,
+                    y: (*screen).y_org as i16,
+                    width: (*screen).width as i16,
+                    height: (*screen).height as i16,
+                },
+            ))
+        }
+    }
+}

x11/src/xinput/mod.rs

@@ -0,0 +1,2 @@
+//! Component of x11 related to listing available input devices, querying
+//! information about a device and changing input device settings.

x11/src/xlib/atom.rs

@@ -0,0 +1,36 @@
+use std::ffi::CString;
+
+use x11::xlib;
+
+use crate::errors::Result;
+
+use super::display::Display;
+
+/// A unique string or intger
+pub struct Atom {
+    inner: xlib::Atom,
+}
+
+impl Atom {
+    /// Create a new atom using a string
+    pub fn new(display: &Display, val: impl AsRef<str>, only_if_exists: bool) -> Result<Self> {
+        let val = {
+            let v = val.as_ref();
+            let s = CString::new(v).unwrap();
+            s.as_ptr()
+        };
+        let inner =
+            unsafe { xlib::XInternAtom(display.as_raw(), val, if only_if_exists { 1 } else { 0 }) };
+        Ok(Atom { inner })
+    }
+
+    /// Create a new Atom object from an existing handle
+    pub fn from(handle: xlib::Atom) -> Self {
+        Atom { inner: handle }
+    }
+
+    /// Get the handle
+    pub fn as_raw(&self) -> xlib::Atom {
+        self.inner
+    }
+}

x11/src/xlib/colormap.rs

@@ -0,0 +1,15 @@
+use x11::xlib;
+
+use super::display::Display;
+
+#[derive(Debug)]
+pub struct ColorMap<'a> {
+    pub(crate) display: &'a Display,
+    pub(crate) inner: xlib::Colormap,
+}
+
+impl<'a> ColorMap<'a> {
+    pub fn as_raw(&self) -> xlib::Colormap {
+        self.inner
+    }
+}

x11/src/xlib/cursor.rs

@@ -0,0 +1,22 @@
+use x11::xlib;
+
+use super::display::Display;
+
+/// Mouse pointer
+#[derive(Debug)]
+pub struct Cursor<'a> {
+    pub(crate) display: &'a Display,
+    pub(crate) inner: xlib::Cursor,
+}
+
+impl<'a> Cursor<'a> {
+    pub fn as_raw(&self) -> xlib::Cursor {
+        self.inner
+    }
+}
+
+impl<'a> Drop for Cursor<'a> {
+    fn drop(&mut self) {
+        unsafe { xlib::XFreeCursor(self.display.as_raw(), self.inner) };
+    }
+}

x11/src/xlib/display.rs

@@ -0,0 +1,265 @@
+use std::env;
+use std::ffi::CString;
+use std::mem::MaybeUninit;
+use std::os::raw::c_char;
+use std::ptr;
+
+use x11::xlib;
+
+use crate::errors::{Error, Result};
+use crate::ffi;
+
+use super::cursor::Cursor;
+use super::event::Event;
+use super::screen::Screen;
+use super::visual::Visual;
+use super::window::Window;
+
+/// A connection to an X server.
+#[derive(Debug)]
+pub struct Display {
+    pub(crate) inner: *mut xlib::Display,
+}
+
+pub struct Grab(pub(crate) *mut xlib::Display);
+
+/// Something that's part of a display.
+pub trait GetDisplay {
+    /// Get the current display
+    fn get_display(&self) -> *mut xlib::Display;
+}
+
+impl Display {
+    /// Opens a new connection to an X server.
+    ///
+    /// On POSIX-conformant systems, the display name or DISPLAY environment
+    /// variable can be a string in the format:
+    ///
+    ///     hostname:number.screen_number
+    ///
+    /// If `None` is passed, then use $DISPLAY
+    pub fn connect(display_name: Option<&str>) -> Result<Display> {
+        let display_name = if let Some(display_name) = display_name {
+            CString::new(display_name).unwrap()
+        } else if let Ok(display_env) = env::var("DISPLAY") {
+            CString::new(display_env).unwrap()
+        } else {
+            return Err(Error::NoDisplay);
+        };
+        let inner = unsafe { xlib::XOpenDisplay(display_name.as_ptr()) };
+        if inner.is_null() {
+            return Err(Error::DisplayOpenError);
+        }
+        Ok(Display { inner })
+    }
+
+    /// Create a Display for an existing connection
+    pub fn from_handle(handle: u64) -> Self {
+        Display {
+            inner: handle as *mut xlib::Display,
+        }
+    }
+
+    /// Grab
+    pub fn grab(&self) -> Grab {
+        unsafe { xlib::XGrabServer(self.inner) };
+        Grab(self.inner)
+    }
+
+    /// Wrapper around XCreateFontCursor
+    pub fn create_font_cursor(&self, shape: u32) -> Result<Cursor> {
+        let cursor = unsafe { xlib::XCreateFontCursor(self.inner, shape) as xlib::Cursor };
+        if cursor == 0 {
+            return Err(Error::CreateCursorError);
+        }
+        Ok(Cursor {
+            display: self,
+            inner: cursor,
+        })
+    }
+
+    /// Get the next event, blocks until an event is reached.
+    pub fn next_event(&self) -> Result<Event> {
+        debug!("fishing for next event...");
+        let mut event = MaybeUninit::uninit();
+        let ptr = event.as_mut_ptr();
+        unsafe { xlib::XNextEvent(self.inner, ptr) };
+        // TODO: check to make sure this isn't null
+        let event = unsafe { event.assume_init() };
+        debug!("event: {:?}", event);
+        unsafe { Event::from_raw(event) }
+    }
+
+    /// Returns the number of events that are still pending
+    pub fn pending(&self) -> Result<i32> {
+        Ok(unsafe { xlib::XPending(self.inner) })
+    }
+
+    /// Gets the raw X Display handle
+    pub fn as_raw(&self) -> *mut xlib::Display {
+        self.inner
+    }
+
+    /// Gets the default screen
+    pub fn default_screen(&self) -> Screen {
+        let screen = unsafe { xlib::XDefaultScreen(self.inner) };
+        Screen {
+            display: self,
+            num: screen,
+        }
+    }
+
+    /// Gets the default visual
+    pub fn default_visual(&self, screen: Screen) -> Visual {
+        let visual = unsafe { xlib::XDefaultVisual(self.inner, screen.num) };
+        Visual { inner: visual }
+    }
+
+    /// Returns the root window for the given screen.
+    pub fn get_root_window(&self, screen: Screen) -> Result<Window> {
+        let inner = unsafe { xlib::XRootWindow(self.inner, screen.num) };
+        if inner == 0 {
+            return Err(Error::GetWindowError);
+        }
+        let window = Window {
+            display: self,
+            inner,
+        };
+        Ok(window)
+    }
+
+    /// Returns the root window for the default screen.
+    pub fn get_default_root_window(&self) -> Result<Window> {
+        let inner = unsafe { xlib::XDefaultRootWindow(self.inner) };
+        if inner == 0 {
+            return Err(Error::GetWindowError);
+        }
+        let window = Window {
+            display: self,
+            inner,
+        };
+        Ok(window)
+    }
+
+    /// Translate coordinates relative to w1 to coordinates relative to w2.
+    /// If the coordinates are contained in a mapped child of the destination window, the third return
+    /// value will hold that child window.
+    pub fn translate_coordinates(
+        &self,
+        w1: Window,
+        x: i32,
+        y: i32,
+        w2: Window,
+    ) -> Result<(i32, i32, Option<Window>)> {
+        let mut rx = 0;
+        let mut ry = 0;
+        let mut child_return: xlib::Window = 0;
+        let status = unsafe {
+            xlib::XTranslateCoordinates(
+                self.inner,
+                w1.inner,
+                w2.inner,
+                x,
+                y,
+                &mut rx,
+                &mut ry,
+                &mut child_return,
+            )
+        };
+        if status == 0 {
+            return Err(Error::TranslateCoordinatesError);
+        }
+        let child = match child_return {
+            0 => None,
+            val => Some(Window {
+                display: self,
+                inner: val,
+            }),
+        };
+        Ok((rx, ry, child))
+    }
+
+    /// Sync
+    pub fn sync(&self, discard: bool) {
+        unsafe { xlib::XSync(self.inner, if discard { 1 } else { 0 }) };
+    }
+
+    /// Returns the focus window and the current focus state.
+    pub fn get_input_focus(&self) -> Result<(Window, i32)> {
+        let mut focus_return: xlib::Window = 0;
+        let mut revert_to_return = 0;
+        unsafe { xlib::XGetInputFocus(self.inner, &mut focus_return, &mut revert_to_return) };
+        let window = Window {
+            display: self,
+            inner: focus_return,
+        };
+        return Ok((window, revert_to_return));
+    }
+
+    /// Query extension
+    pub fn query_extension(&self, name: impl AsRef<str>) -> Result<()> {
+        let name = ffi::c_char_star_from_string(name)?;
+        let major_opcode_return = ptr::null_mut();
+        let first_event_return = ptr::null_mut();
+        let first_error_return = ptr::null_mut();
+        let _result = unsafe {
+            xlib::XQueryExtension(
+                self.inner,
+                name,
+                major_opcode_return,
+                first_event_return,
+                first_error_return,
+            )
+        };
+        // TODO: check reuslt
+
+        unimplemented!()
+    }
+
+    /// List extensions
+    pub fn list_extensions(&self) -> Result<ListExtensions> {
+        let nextensions_return = ptr::null_mut();
+        let result = unsafe { xlib::XListExtensions(self.inner, nextensions_return) };
+        // TODO: check result null
+        // TODO: check nextensions_return
+        let nextensions_return = unsafe { *nextensions_return } as isize;
+        Ok(ListExtensions(&self, result, nextensions_return))
+    }
+}
+
+impl Drop for Display {
+    fn drop(&mut self) {
+        unsafe { xlib::XCloseDisplay(self.inner) };
+    }
+}
+
+impl Drop for Grab {
+    fn drop(&mut self) {
+        unsafe { xlib::XUngrabServer(self.0) };
+    }
+}
+
+pub struct ListExtensions<'a>(&'a Display, *mut *mut c_char, isize);
+
+impl<'a> ListExtensions<'a> {
+    pub fn iter(&self) -> ListExtensionsIter {
+        ListExtensionsIter(self, 0)
+    }
+}
+
+pub struct ListExtensionsIter<'a>(&'a ListExtensions<'a>, isize);
+
+impl<'a> Iterator for ListExtensionsIter<'a> {
+    type Item = String;
+    fn next(&mut self) -> Option<Self::Item> {
+        if self.1 >= (self.0).2 {
+            return None;
+        }
+
+        // TODO: check for null
+        let base = unsafe { *(self.0).1.offset(self.1) };
+        let s = unsafe { ffi::string_from_c_char_star(base).unwrap() };
+        // TODO: don't unwrap here
+        Some(s)
+    }
+}

x11/src/xlib/drawable.rs

@@ -0,0 +1,30 @@
+use x11::xlib;
+
+use crate::errors::Result;
+use crate::rect::Rectangle;
+
+use super::display::GetDisplay;
+use super::image::Image;
+
+/// Anything that's drawable
+pub trait Drawable: GetDisplay {
+    /// Get drawable handle
+    fn as_drawable(&self) -> xlib::Drawable;
+
+    /// Capture a snapshot of this drawable, clipped by rect.
+    fn get_image(&self, rect: Rectangle) -> Result<Image> {
+        let image = unsafe {
+            xlib::XGetImage(
+                self.get_display(),
+                self.as_drawable(),
+                rect.x as i32,
+                rect.y as i32,
+                rect.width,
+                rect.height,
+                0xffffffff,
+                xlib::ZPixmap,
+            )
+        };
+        Ok(Image { inner: image })
+    }
+}

x11/src/xlib/event.rs

@@ -0,0 +1,102 @@
+use x11::xlib;
+
+use crate::errors::{Error, Result};
+
+/// An x11 Event
+#[derive(Debug)]
+pub struct Event {
+    inner: xlib::XEvent,
+    kind: EventKind,
+}
+
+/// Type of event
+#[derive(Debug)]
+pub enum EventKind {
+    KeyPress(KeyEvent),
+    KeyRelease(KeyEvent),
+
+    ButtonPress(ButtonEvent),
+    ButtonRelease(ButtonEvent),
+    Motion(MotionEvent),
+
+    Enter(CrossingEvent),
+    Leave(CrossingEvent),
+
+    FocusIn(FocusChangeEvent),
+    FocusOut(FocusChangeEvent),
+
+    Keymap(KeymapEvent),
+
+    Configure(ConfigureEvent),
+    Destroy(DestroyWindowEvent),
+    Reparent(ReparentEvent),
+
+    Property(PropertyEvent),
+}
+
+impl Event {
+    /// Returns the EventKind of this event
+    pub fn kind(&self) -> &EventKind {
+        &self.kind
+    }
+
+    pub(super) unsafe fn from_raw(event: xlib::XEvent) -> Result<Self> {
+        let inner = event;
+        debug!("event type: {:?}", event.type_);
+        let kind = match event.type_ {
+            xlib::KeyPress => EventKind::KeyPress(KeyEvent(event.key)),
+            xlib::KeyRelease => EventKind::KeyRelease(KeyEvent(event.key)),
+
+            xlib::ButtonPress => EventKind::ButtonPress(ButtonEvent(event.button)),
+            xlib::ButtonRelease => EventKind::ButtonRelease(ButtonEvent(event.button)),
+            xlib::MotionNotify => EventKind::Motion(MotionEvent(event.motion)),
+
+            xlib::EnterNotify => EventKind::Enter(CrossingEvent(event.crossing)),
+            xlib::LeaveNotify => EventKind::Leave(CrossingEvent(event.crossing)),
+
+            xlib::FocusIn => EventKind::FocusIn(FocusChangeEvent(event.focus_change)),
+            xlib::FocusOut => EventKind::FocusOut(FocusChangeEvent(event.focus_change)),
+
+            xlib::KeymapNotify => EventKind::Keymap(KeymapEvent(event.keymap)),
+
+            xlib::ConfigureNotify => EventKind::Configure(ConfigureEvent(event.configure)),
+            xlib::DestroyNotify => EventKind::Destroy(DestroyWindowEvent(event.destroy_window)),
+            xlib::ReparentNotify => EventKind::Reparent(ReparentEvent(event.reparent)),
+
+            xlib::PropertyNotify => EventKind::Property(PropertyEvent(event.property)),
+
+            other => return Err(Error::InvalidEventType(other)),
+        };
+        Ok(Event { inner, kind })
+    }
+}
+
+#[derive(Debug)]
+pub struct KeyEvent(xlib::XKeyEvent);
+
+#[derive(Debug)]
+pub struct ButtonEvent(xlib::XButtonEvent);
+
+#[derive(Debug)]
+pub struct MotionEvent(xlib::XMotionEvent);
+
+#[derive(Debug)]
+pub struct CrossingEvent(xlib::XCrossingEvent);
+
+#[derive(Debug)]
+pub struct FocusChangeEvent(xlib::XFocusChangeEvent);
+
+#[derive(Debug)]
+pub struct KeymapEvent(xlib::XKeymapEvent);
+
+#[derive(Debug)]
+pub struct ConfigureEvent(xlib::XConfigureEvent);
+
+#[derive(Debug)]
+pub struct DestroyWindowEvent(xlib::XDestroyWindowEvent);
+
+#[derive(Debug)]
+pub struct ReparentEvent(xlib::XReparentEvent);
+
+#[derive(Debug)]
+pub struct PropertyEvent(xlib::XPropertyEvent);

x11/src/xlib/image.rs

@@ -0,0 +1,126 @@
+use x11::xlib;
+
+use crate::errors::{Error, Result};
+
+/// A handle to an XImage
+///
+/// Xlib provides some structures to perform operations on images. However, because there are
+/// different in-memory representations, working with images is actually totally fucked. If you
+/// want to maintain your sanity, do NOT pry into the raw data buffer of an Image. Instead, index
+/// into the image using `PixBuffer::get_pixel` which already performs the conversion and returns a
+/// tuple of RGB values.
+///
+/// Peeking into the raw data buffer of an Image
+/// --------------------------------------------
+///
+/// Images consist of lines of longs in row-major form.
+pub struct Image {
+    pub(super) inner: *mut xlib::XImage,
+}
+
+/// Image byte order
+pub enum ImageByteOrder {
+    /// Least significant byte first
+    LSBFirst,
+    /// Most significant byte first
+    MSBFirst,
+}
+
+impl Image {
+    /// Get the size (in bytes) of the data buffer.
+    pub fn get_size(&self) -> usize {
+        4 * self.get_width() as usize * self.get_height() as usize
+    }
+
+    /// Get the image width
+    pub fn get_width(&self) -> u32 {
+        unsafe { (*self.inner).width as u32 }
+    }
+
+    /// Get the image height
+    pub fn get_height(&self) -> u32 {
+        unsafe { (*self.inner).height as u32 }
+    }
+
+    /// Get the image depth
+    pub fn get_depth(&self) -> u32 {
+        unsafe { (*self.inner).depth as u32 }
+    }
+
+    /// Get byte order (LSB or MSB)
+    pub fn get_byte_order(&self) -> Result<ImageByteOrder> {
+        let byte_order = unsafe { (*self.inner).byte_order };
+        match byte_order {
+            xlib::LSBFirst => Ok(ImageByteOrder::LSBFirst),
+            xlib::MSBFirst => Ok(ImageByteOrder::MSBFirst),
+            order => Err(Error::InvalidByteOrder(order)),
+        }
+    }
+
+    fn get_rgb_masks(&self) -> (u64, u64, u64) {
+        let red_mask = unsafe { (*self.inner).red_mask };
+        let green_mask = unsafe { (*self.inner).green_mask };
+        let blue_mask = unsafe { (*self.inner).blue_mask };
+        (red_mask, blue_mask, green_mask)
+    }
+
+    /// Produces a PixBuffer.
+    pub fn buffer(&self) -> PixBuffer {
+        let size = self.get_size();
+        let buf = unsafe { (*self.inner).data as *mut u8 };
+        let masks = self.get_rgb_masks();
+        PixBuffer {
+            buf,
+            size,
+            masks,
+            image: self,
+        }
+    }
+}
+
+impl Drop for Image {
+    fn drop(&mut self) {
+        unsafe { xlib::XDestroyImage(self.inner) };
+    }
+}
+
+/// The buffer pointed to by an XImage.
+pub struct PixBuffer<'a> {
+    /// The raw pointer to the buffer
+    pub buf: *mut u8,
+
+    /// The size of the buffer
+    pub size: usize,
+
+    /// Rgb masks
+    pub masks: (u64, u64, u64),
+
+    pub image: &'a Image,
+}
+
+impl<'a> PixBuffer<'a> {
+    /// Retrieve a direct reference to the internal buffer.
+    pub fn get_buffer(&self) -> &[u8] {
+        unsafe { std::slice::from_raw_parts(self.buf, self.size) }
+    }
+
+    /// Gets the rgb value of a particular pixel, after performing conversion
+    ///
+    /// This uses XImage's get_pixel function to retrieve the pixel value, and then the various
+    /// red/green/blue masks to actually perform the conversions, and fails (returns `None`) if the
+    /// (x, y) coordinates given aren't actually in the image.
+    pub fn get_pixel(&self, x: u32, y: u32) -> Option<(u8, u8, u8)> {
+        let get_pixel = unsafe { (*self.image.inner).funcs.get_pixel }.unwrap();
+        let pixel = unsafe { get_pixel(self.image.inner, x as i32, y as i32) };
+
+        let red_mask = unsafe { (*self.image.inner).red_mask };
+        let green_mask = unsafe { (*self.image.inner).green_mask };
+        let blue_mask = unsafe { (*self.image.inner).blue_mask };
+
+        let red = ((pixel & red_mask) >> 16) as u8;
+        let green = ((pixel & green_mask) >> 8) as u8;
+        let blue = ((pixel & blue_mask) >> 0) as u8;
+
+        Some((red, green, blue))
+    }
+}

x11/src/xlib/mod.rs

@@ -0,0 +1,30 @@
+//! xlib
+//! ----
+//!
+//! The core struct used here is Display, which represents a connection to an X server. Almost all
+//! other structs depend on a reference to Display, since they only make sense in context of an X
+//! server.
+
+mod atom;
+mod colormap;
+mod cursor;
+mod display;
+mod drawable;
+mod event;
+mod image;
+mod pixmap;
+mod screen;
+mod visual;
+mod window;
+
+pub use self::atom::Atom;
+pub use self::colormap::ColorMap;
+pub use self::cursor::Cursor;
+pub use self::display::{Display, GetDisplay};
+pub use self::drawable::Drawable;
+pub use self::event::{Event, EventKind};
+pub use self::image::{Image, ImageByteOrder, PixBuffer};
+pub use self::pixmap::PixMap;
+pub use self::screen::Screen;
+pub use self::visual::{Visual, VisualInfo};
+pub use self::window::{EventMask, SetWindowAttributes, Window, WindowAttributes};

x11/src/xlib/pixmap.rs

@@ -0,0 +1,28 @@
+use x11::xlib;
+
+use super::display::Display;
+
+/// Pixmaps are off-screen resources that are used for various operations, for
+/// example, defining cursors as tiling patterns or as the source for certain
+/// raster operations
+///
+/// Most graphics requests can operate either on a window or on a pixmap. A
+/// bitmap is a single bit-plane pixmap. Pixmaps can only be used on the screen
+/// on which they were created.
+#[derive(Debug)]
+pub struct PixMap<'a> {
+    pub(crate) display: &'a Display,
+    pub(crate) inner: xlib::Pixmap,
+}
+
+impl<'a> PixMap<'a> {
+    pub fn as_raw(&self) -> xlib::Pixmap {
+        self.inner
+    }
+}
+
+impl<'a> Drop for PixMap<'a> {
+    fn drop(&mut self) {
+        unsafe { xlib::XFreePixmap(self.display.as_raw(), self.inner) };
+    }
+}

x11/src/xlib/screen.rs

@@ -0,0 +1,18 @@
+use x11::xlib;
+
+use super::display::Display;
+
+pub struct Screen<'a> {
+    pub(crate) display: &'a Display,
+    pub(crate) num: i32,
+}
+
+impl<'a> Screen<'a> {
+    pub fn width_in_pixels(&self) -> i32 {
+        unsafe { xlib::XDisplayWidth(self.display.inner, self.num) }
+    }
+
+    pub fn height_in_pixels(&self) -> i32 {
+        unsafe { xlib::XDisplayHeight(self.display.inner, self.num) }
+    }
+}

x11/src/xlib/visual.rs

@@ -0,0 +1,35 @@
+use x11::xlib;
+
+use super::display::Display;
+
+/// A wrapper around a Visual
+pub struct Visual {
+    pub(super) inner: *mut xlib::Visual,
+}
+
+impl Visual {
+    /// Gets the raw handle to the x11 Visual
+    pub fn as_raw(&self) -> *mut xlib::Visual {
+        self.inner
+    }
+
+    /// Gets the default visual
+    pub fn default(display: &Display, screen: i32) -> Self {
+        let inner = unsafe { xlib::XDefaultVisual(display.as_raw(), screen) };
+        Visual { inner }
+    }
+}
+
+pub struct VisualInfo {
+    pub(super) inner: *mut xlib::XVisualInfo,
+}
+
+impl VisualInfo {
+    pub fn from_raw(inner: *mut xlib::XVisualInfo) -> Self {
+        VisualInfo { inner }
+    }
+
+    pub fn as_raw(&self) -> *mut xlib::XVisualInfo {
+        self.inner
+    }
+}

x11/src/xlib/window/attr.rs

@@ -0,0 +1,186 @@
+use std::os::raw::c_ulong;
+
+use x11::xlib;
+
+use crate::xlib::colormap::ColorMap;
+use crate::xlib::cursor::Cursor;
+use crate::xlib::display::Display;
+use crate::xlib::pixmap::PixMap;
+use crate::xlib::window::Window;
+
+/// Window Attributes
+pub struct WindowAttributes<'a> {
+    pub(crate) display: &'a Display,
+    pub(crate) inner: *mut xlib::XWindowAttributes,
+}
+
+impl<'a> WindowAttributes<'a> {
+    /// Gets the width of the window
+    pub fn get_x(&self) -> i32 {
+        unsafe { (*self.inner).x as i32 }
+    }
+
+    /// Gets the height of the window
+    pub fn get_y(&self) -> i32 {
+        unsafe { (*self.inner).y as i32 }
+    }
+
+    /// Gets the width of the window
+    pub fn get_width(&self) -> u32 {
+        unsafe { (*self.inner).width as u32 }
+    }
+
+    /// Gets the height of the window
+    pub fn get_height(&self) -> u32 {
+        unsafe { (*self.inner).height as u32 }
+    }
+
+    /// Get the root window of this window
+    pub fn get_root(&self) -> Window {
+        Window {
+            display: self.display,
+            inner: unsafe { (*self.inner).root },
+        }
+    }
+}
+
+impl<'a> Drop for WindowAttributes<'a> {
+    fn drop(&mut self) {
+        unsafe { libc::free(self.inner as *mut libc::c_void) };
+    }
+}
+
+bitflags! {
+    #[derive(Default)]
+    pub struct EventMask: c_ulong {
+        const NO_EVENT_MASK = 0;
+        const KEY_PRESS_MASK = (1<<0);
+        const KEY_RELEASE_MASK = (1<<1);
+        const BUTTON_PRESS_MASK = (1<<2);
+        const BUTTON_RELEASE_MASK = (1<<3);
+        const ENTER_WINDOW_MASK = (1<<4);
+        const LEAVE_WINDOW_MASK = (1<<5);
+        const POINTER_MOTION_MASK = (1<<6);
+        const POINTER_MOTION_HINT_MASK = (1<<7);
+        const BUTTON_1_MOTION_MASK = (1<<8);
+        const BUTTON_2_MOTION_MASK = (1<<9);
+        const BUTTON_3_MOTION_MASK = (1<<10);
+        const BUTTON_4_MOTION_MASK = (1<<11);
+        const BUTTON_5_MOTION_MASK = (1<<12);
+        const BUTTON_MOTION_MASK = (1<<13);
+        const KEYMAP_STATE_MASK = (1<<14);
+        const EXPOSURE_MASK = (1<<15);
+        const VISIBILITY_CHANGE_MASK = (1<<16);
+        const STRUCTURE_NOTIFY_MASK = (1<<17);
+        const RESIZE_REDIRECT_MASK = (1<<18);
+        const SUBSTRUCTURE_NOTIFY_MASK = (1<<19);
+        const SUBSTRUCTURE_REDIRECT_MASK = (1<<20);
+        const FOCUS_CHANGE_MASK = (1<<21);
+        const PROPERTY_CHANGE_MASK = (1<<22);
+        const COLORMAP_CHANGE_MASK = (1<<23);
+        const OWNER_GRAB_BUTTON_MASK = (1<<24);
+    }
+}
+
+#[derive(Debug)]
+#[repr(i32)]
+pub enum BackingStore {
+    NotUseful = xlib::NotUseful,
+    WhenMapped = xlib::WhenMapped,
+    Always = xlib::Always,
+}
+
+impl Default for BackingStore {
+    fn default() -> Self {
+        BackingStore::NotUseful
+    }
+}
+
+#[derive(Debug)]
+#[repr(i32)]
+pub enum Gravity {
+    NorthWest = xlib::NorthWestGravity,
+    North = xlib::NorthGravity,
+    NorthEast = xlib::NorthEastGravity,
+    West = xlib::WestGravity,
+    Center = xlib::CenterGravity,
+    East = xlib::EastGravity,
+    SouthWest = xlib::SouthWestGravity,
+    South = xlib::SouthGravity,
+    SouthEast = xlib::SouthEastGravity,
+
+    Forget = xlib::ForgetGravity,
+    Static = xlib::StaticGravity,
+    // TODO: separate one for window gravity
+    // Unmap= xlib::UnmapGravity,
+}
+
+// TODO: some of these Options have other options than just None
+// TODO: do-not-propagate mask has a subset of options?
+#[derive(Debug)]
+pub struct SetWindowAttributes<'a> {
+    pub background_pixmap: Option<PixMap<'a>>,
+    pub background_pixel: u64,
+    pub border_pixmap: Option<PixMap<'a>>,
+    pub border_pixel: u64,
+    pub bit_gravity: Gravity,
+    pub win_gravity: Gravity,
+    pub backing_store: BackingStore,
+    pub backing_planes: u64,
+    pub backing_pixel: u64,
+    pub save_under: bool,
+    pub event_mask: EventMask,
+    pub do_not_propagate_mask: EventMask,
+    pub override_redirect: bool,
+    pub colormap: Option<ColorMap<'a>>,
+    pub cursor: Option<Cursor<'a>>,
+}
+
+impl<'a> Default for SetWindowAttributes<'a> {
+    fn default() -> Self {
+        SetWindowAttributes {
+            background_pixmap: None,
+            background_pixel: 0,
+            border_pixmap: None,
+            border_pixel: 0,
+            bit_gravity: Gravity::Forget,
+            win_gravity: Gravity::NorthWest,
+            backing_store: BackingStore::NotUseful,
+            backing_planes: u64::MAX,
+            backing_pixel: 0,
+            save_under: false,
+            event_mask: EventMask::default(),
+            do_not_propagate_mask: EventMask::default(),
+            override_redirect: false,
+            colormap: None,
+            cursor: None,
+        }
+    }
+}
+
+impl<'a> SetWindowAttributes<'a> {
+    pub fn into_raw(self) -> *mut xlib::XSetWindowAttributes {
+        let result = xlib::XSetWindowAttributes {
+            background_pixmap: self
+                .background_pixmap
+                .map(|p| p.as_raw())
+                .unwrap_or_else(|| 0),
+            background_pixel: self.background_pixel,
+            border_pixmap: self.border_pixmap.map(|p| p.as_raw()).unwrap_or_else(|| 0),
+            border_pixel: self.border_pixel,
+            bit_gravity: self.bit_gravity as i32,
+            win_gravity: self.win_gravity as i32,
+            backing_store: self.backing_store as i32,
+            backing_planes: self.backing_planes,
+            backing_pixel: self.backing_pixel,
+            save_under: self.save_under.into(),
+            event_mask: self.event_mask.bits() as i64,
+            do_not_propagate_mask: self.do_not_propagate_mask.bits() as i64,
+            override_redirect: self.override_redirect.into(),
+            colormap: self.colormap.map(|p| p.as_raw()).unwrap_or_else(|| 0),
+            cursor: self.cursor.map(|p| p.as_raw()).unwrap_or_else(|| 0),
+        };
+
+        Box::into_raw(Box::new(result))
+    }
+}

x11/src/xlib/window/mod.rs

@@ -0,0 +1,148 @@
+mod attr;
+
+use std::mem;
+
+use x11::xlib;
+
+use crate::errors::{Error, Result};
+use crate::rect::Rectangle;
+
+use super::atom::Atom;
+use super::display::{Display, GetDisplay};
+use super::drawable::Drawable;
+use super::image::Image;
+use super::screen::Screen;
+
+pub use self::attr::{EventMask, SetWindowAttributes, WindowAttributes};
+
+/// A wrapper around a window handle.
+#[derive(Clone, Debug)]
+pub struct Window<'a> {
+    pub(crate) display: &'a Display,
+    pub(crate) inner: xlib::Window,
+}
+
+impl<'a> Window<'a> {
+    /// Create a new window
+    pub fn create(
+        display: &'a Display,
+        parent: Option<Window>,
+        location: Rectangle,
+        set_attributes: SetWindowAttributes,
+    ) -> Result<Window<'a>> {
+        let parent = match parent {
+            Some(parent) => parent,
+            None => display.get_default_root_window()?,
+        };
+        let visual = display.default_visual(Screen { display, num: 0 });
+        let window = unsafe {
+            xlib::XCreateWindow(
+                display.as_raw(),
+                parent.as_raw(),
+                location.x as i32,
+                location.y as i32,
+                location.width,
+                location.height,
+                0,
+                0,
+                0,
+                visual.as_raw(),
+                0,
+                set_attributes.into_raw(),
+            )
+        };
+        Ok(Window {
+            display,
+            inner: window,
+        })
+    }
+
+    /// Create a new Window instance from an existing ID
+    pub fn create_from_handle(display: &Display, id: u64) -> Result<Window> {
+        Ok(Window { display, inner: id })
+    }
+
+    /// Get window attributes.
+    pub fn get_attributes(&self) -> Result<WindowAttributes> {
+        let attr = unsafe {
+            libc::malloc(mem::size_of::<xlib::XWindowAttributes>()) as *mut xlib::XWindowAttributes
+        };
+        let result = unsafe { xlib::XGetWindowAttributes(self.display.as_raw(), self.inner, attr) };
+        match result {
+            0 => Err(Error::GetAttributesError),
+            _ => Ok(WindowAttributes {
+                display: self.display,
+                inner: attr,
+            }),
+        }
+    }
+
+    /// Get the raw window handle
+    pub fn as_raw(&self) -> xlib::Window {
+        self.inner
+    }
+
+    /// Gets the image from this window using XGetImage.
+    pub fn get_image(&self) -> Result<Image> {
+        let attr = self.get_attributes()?;
+        Drawable::get_image(
+            self,
+            Rectangle::new(
+                attr.get_x(),
+                attr.get_y(),
+                attr.get_width(),
+                attr.get_height(),
+            ),
+        )
+    }
+
+    /// Change window property
+    // TODO: make it more general
+    pub fn change_property(&self, key: &Atom, val: &Atom) {
+        use std::mem::transmute;
+        let v = val.as_raw();
+        unsafe {
+            xlib::XChangeProperty(
+                self.display.as_raw(),
+                self.inner,
+                key.as_raw(),
+                xlib::XA_ATOM,
+                32,
+                xlib::PropModeReplace,
+                transmute(&v),
+                1,
+            );
+        }
+    }
+
+    /// "Maps", or shows a window to a display.
+    pub fn map(&self) {
+        unsafe { xlib::XMapWindow(self.display.as_raw(), self.inner) };
+    }
+
+    /// Requests for events from the server matching a particular event mask.
+    ///
+    /// If this function is not called, events will not be reported.
+    pub fn select_input(&self, event_mask: EventMask) {
+        debug!("event mask: {:?}", event_mask);
+        unsafe { xlib::XSelectInput(self.display.as_raw(), self.inner, event_mask.bits() as i64) };
+    }
+}
+
+impl<'a> GetDisplay for Window<'a> {
+    fn get_display(&self) -> *mut xlib::Display {
+        self.display.as_raw()
+    }
+}
+
+impl<'a> Drawable for Window<'a> {
+    fn as_drawable(&self) -> xlib::Drawable {
+        self.inner
+    }
+}
+
+impl<'a> Drop for Window<'a> {
+    fn drop(&mut self) {
+        unsafe { xlib::XDestroyWindow(self.display.as_raw(), self.inner) };
+    }
+}

x11/src/xrender/mod.rs

@@ -0,0 +1,4 @@
+//! An extension that deals with rendering and compositing images with other
+//! drawing primitives.
+
+mod picture;

x11/src/xrender/picture.rs

@@ -0,0 +1,7 @@
+pub struct Picture {}
+
+impl Picture {}
+
+impl Drop for Picture {
+    fn drop(&mut self) {}
+}