From 51b7747e62c189d430318c67368a5c84e50ece61 Mon Sep 17 00:00:00 2001
From: Arne Dußin
Date: Sun, 17 Jan 2021 13:33:04 +0100
Subject: Input revamp to make keybindings controlable.

---
 src/button.rs           | 183 --------------------------------------------
 src/cli/mod.rs          |  94 ++++++++++++++---------
 src/config.rs           | 117 +++++++++++++++++++---------
 src/editor.rs           |  86 +++++++--------------
 src/gui/tool_sidebar.rs |  42 +++++++---
 src/input/binding.rs    | 123 +++++++++++++++++++++++++++++
 src/input/button.rs     | 177 ++++++++++++++++++++++++++++++++++++++++++
 src/input/mod.rs        | 200 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/main.rs             |  25 +++---
 src/math/rect.rs        |   9 ++-
 src/math/surface.rs     |   4 +-
 src/stable_vec.rs       | 107 ++++++++++++++++++++++++++
 src/tool/icon_tool.rs   |  21 ++---
 src/tool/mod.rs         |   4 +-
 14 files changed, 839 insertions(+), 353 deletions(-)
 delete mode 100644 src/button.rs
 create mode 100644 src/input/binding.rs
 create mode 100644 src/input/button.rs
 create mode 100644 src/input/mod.rs
 create mode 100644 src/stable_vec.rs

(limited to 'src')

diff --git a/src/button.rs b/src/button.rs
deleted file mode 100644
index 846377e..0000000
--- a/src/button.rs
+++ /dev/null
@@ -1,183 +0,0 @@
-//! Reimplementation crate of the KeyboardKey and MouseButton structs of raylib, because they do
-//! not implement `serde::Serialize` and `serde::Deserialize`. If you have a better idea on how to
-//! handle it, feel free.
-
-use raylib::ffi::{KeyboardKey as rlKeyboardKey, MouseButton as rlMouseButton};
-use raylib::RaylibHandle;
-use serde::{Deserialize, Serialize};
-use std::mem;
-
-/// Enum to abstract the distinction of keyboard keys and mouse keys that raylib does away so the
-/// user has free reign over what key they use for what purpose.
-#[derive(Serialize, Deserialize, Debug, Copy, Clone, PartialEq, Eq, Hash)]
-pub enum Button {
-    /// Button on the mouse with internal mouse button representation of raylib.
-    Mouse(MouseButton),
-    /// Keyboard button with internal keyboard key representation of raylib.
-    Keyboard(KeyboardKey),
-}
-
-#[allow(missing_docs)]
-#[repr(u32)]
-#[derive(Serialize, Deserialize, Debug, Copy, Clone, PartialEq, Eq, Hash)]
-pub enum MouseButton {
-    Left = 0,
-    Right = 1,
-    Middle = 2,
-}
-
-#[allow(missing_docs)]
-#[repr(u32)]
-#[derive(Serialize, Deserialize, Debug, Copy, Clone, PartialEq, Eq, Hash)]
-pub enum KeyboardKey {
-    Apostrophe = 39,
-    Comma = 44,
-    Minus = 45,
-    Period = 46,
-    Slash = 47,
-    Zero = 48,
-    One = 49,
-    Two = 50,
-    Three = 51,
-    Four = 52,
-    Five = 53,
-    Six = 54,
-    Seven = 55,
-    Eight = 56,
-    Nine = 57,
-    Semicolon = 59,
-    Equal = 61,
-    A = 65,
-    B = 66,
-    C = 67,
-    D = 68,
-    E = 69,
-    F = 70,
-    G = 71,
-    H = 72,
-    I = 73,
-    J = 74,
-    K = 75,
-    L = 76,
-    M = 77,
-    N = 78,
-    O = 79,
-    P = 80,
-    Q = 81,
-    R = 82,
-    S = 83,
-    T = 84,
-    U = 85,
-    V = 86,
-    W = 87,
-    X = 88,
-    Y = 89,
-    Z = 90,
-    Space = 32,
-    Escape = 256,
-    Enter = 257,
-    Tab = 258,
-    Backspace = 259,
-    Insert = 260,
-    Delete = 261,
-    Right = 262,
-    Left = 263,
-    Down = 264,
-    Up = 265,
-    PageUp = 266,
-    PageDown = 267,
-    Home = 268,
-    End = 269,
-    CapsLock = 280,
-    ScrollLock = 281,
-    NumLock = 282,
-    PrintScreen = 283,
-    Pause = 284,
-    F1 = 290,
-    F2 = 291,
-    F3 = 292,
-    F4 = 293,
-    F5 = 294,
-    F6 = 295,
-    F7 = 296,
-    F8 = 297,
-    F9 = 298,
-    F10 = 299,
-    F11 = 300,
-    F12 = 301,
-    LeftShift = 340,
-    LeftControl = 341,
-    LeftAlt = 342,
-    LeftSuper = 343,
-    RightShift = 344,
-    RightControl = 345,
-    RightAlt = 346,
-    RightSuper = 347,
-    Menu = 348,
-    LeftBracket = 91,
-    Backslash = 92,
-    RightBracket = 93,
-    Grave = 96,
-    Keypad0 = 320,
-    Keypad1 = 321,
-    Keypad2 = 322,
-    Keypad3 = 323,
-    Keypad4 = 324,
-    Keypad5 = 325,
-    Keypad6 = 326,
-    Keypad7 = 327,
-    Keypad8 = 328,
-    Keypad9 = 329,
-    KeypadDecimal = 330,
-    KeypadDivide = 331,
-    KeypadMultiply = 332,
-    KeypadSubtract = 333,
-    KeypadAdd = 334,
-    KeypadEnter = 335,
-    KeypadEqual = 336,
-}
-
-impl Button {
-    /// Check if this button is pressed. If `mouse_blocked` is true, mouse buttons are ignored which
-    /// is useful when an element has captured the mouse, but other elements are still queried in the
-    /// background.
-    pub fn is_pressed(self, rl: &RaylibHandle, mouse_blocked: bool) -> bool {
-        match self {
-            Self::Mouse(button) => !mouse_blocked && rl.is_mouse_button_pressed(button.into()),
-            Self::Keyboard(key) => rl.is_key_pressed(key.into()),
-        }
-    }
-}
-
-impl From<rlMouseButton> for Button {
-    fn from(button: rlMouseButton) -> Self {
-        Self::Mouse(MouseButton::from(button))
-    }
-}
-impl From<rlKeyboardKey> for Button {
-    fn from(key: rlKeyboardKey) -> Self {
-        Self::Keyboard(KeyboardKey::from(key))
-    }
-}
-
-impl From<rlMouseButton> for MouseButton {
-    fn from(button: rlMouseButton) -> Self {
-        unsafe { mem::transmute(button as u32) }
-    }
-}
-impl Into<rlMouseButton> for MouseButton {
-    fn into(self) -> rlMouseButton {
-        unsafe { mem::transmute(self as u32) }
-    }
-}
-
-impl From<rlKeyboardKey> for KeyboardKey {
-    fn from(key: rlKeyboardKey) -> Self {
-        unsafe { mem::transmute(key as u32) }
-    }
-}
-impl Into<rlKeyboardKey> for KeyboardKey {
-    fn into(self) -> rlKeyboardKey {
-        unsafe { mem::transmute(self as u32) }
-    }
-}
diff --git a/src/cli/mod.rs b/src/cli/mod.rs
index a654e19..370a30b 100644
--- a/src/cli/mod.rs
+++ b/src/cli/mod.rs
@@ -12,81 +12,99 @@ pub mod cmd;
 pub use self::cmd::*;
 
 use crate::colours::DEFAULT_COLOURS;
+use crate::input::{Button, Input};
 use crate::math::Vec2;
 use crate::Editor;
 use raylib::drawing::{RaylibDraw, RaylibDrawHandle};
-use raylib::ffi::KeyboardKey;
-use raylib::RaylibHandle;
+use std::sync::mpsc::Receiver;
 
 /// The command line interface. Should be created only once per program instance.
 pub struct CLI {
     text: String,
-    active: bool,
+    char_pipe: Option<Receiver<char>>,
 }
 
 impl CLI {
     /// Create a CLI for this instance
-    #[allow(clippy::new_without_default)]
-    pub fn new() -> Self {
+    pub fn new(input: &mut Input) -> Self {
+        input.add_global(Button::Text(':').into());
+
         Self {
             text: String::new(),
-            active: false,
+            char_pipe: None,
         }
     }
 
     /// Activates the CLI, which will now capture keyboard input and execute commands accordingly.
-    pub fn activate(&mut self) {
-        if !self.active {
-            self.text = ";".to_owned();
-            self.active = true;
+    pub fn try_activate(&mut self, input: &mut Input) {
+        if !self.active() {
+            self.char_pipe = input.try_capture_keyboard();
+
+            if self.char_pipe.is_some() {
+                self.text = ":".to_owned();
+            }
         }
     }
 
+    /// Deactivate the command line.
+    pub fn deactivate(&mut self) {
+        // Hang up, the input handler will get the message.
+        self.char_pipe = None;
+    }
+
     /// Checks if the CLI is currently active. This means input to other things should be ignored.
     pub fn active(&self) -> bool {
-        self.active
+        self.char_pipe.is_some()
+    }
+
+    fn perform_command(&mut self, editor: &mut Editor) {
+        match cmd::parse_command(&self.text[1..]) {
+            Ok(cmd) => match cmd.process(editor) {
+                Ok(res) => self.text = format!("SUCCESS: {}", res),
+                Err(err) => self.text = format!("ERROR: {}", err),
+            },
+            Err(err) => self.text = format!("SYNTAX ERROR: {}", err),
+        }
     }
 
     /// Handle input for the command line and perform any commands the user may want to run.
-    pub fn update(&mut self, rl: &mut RaylibHandle, editor: &mut Editor) {
+    pub fn update(&mut self, editor: &mut Editor, input: &mut Input) {
         /* Check if the CLI is currently active. If not and it should not be activated according to
          * keyboard input, there is nothing to do.
          */
-        if !self.active {
-            if rl.is_key_pressed(KeyboardKey::KEY_SEMICOLON) {
-                // Don't write the keypress again.
-                rl.get_key_pressed();
-                self.activate();
+        if !self.active() {
+            if input.poll_global(&Button::Text(':').into()) {
+                self.try_activate(input);
+                if !self.active() {
+                    return;
+                }
             } else {
                 return;
             }
         }
 
-        // The CLI is currently active. Handle input to it.
-        if let Some(key) = rl.get_key_pressed_number() {
-            self.text.push(key as u8 as char);
-        } else if rl.is_key_pressed(KeyboardKey::KEY_BACKSPACE) {
-            self.text.pop();
-        } else if rl.is_key_pressed(KeyboardKey::KEY_ESCAPE) {
-            self.text.clear();
+        let rx = self
+            .char_pipe
+            .as_mut()
+            .expect("No character pipe eventhough CLI should be active");
+
+        if let Ok(c) = rx.try_recv() {
+            match c {
+                '\x1B' => self.text.clear(), // Escape
+                '\x7f' => {
+                    self.text.pop();
+                } // Backspace
+                '\n' => {
+                    self.perform_command(editor);
+                    self.deactivate();
+                }
+                c => self.text.push(c),
+            }
         }
 
         // When the text is empty, there is also no command marker, so set as inactive and leave.
         if self.text.is_empty() {
-            self.active = false;
-            return;
-        }
-
-        // Perform the entered command, when the enter-key is pressed.
-        if rl.is_key_pressed(KeyboardKey::KEY_ENTER) {
-            self.active = false;
-            match cmd::parse_command(&self.text[1..]) {
-                Ok(cmd) => match cmd.process(editor) {
-                    Ok(res) => self.text = format!("SUCCESS: {}", res),
-                    Err(err) => self.text = format!("ERROR: {}", err),
-                },
-                Err(err) => self.text = format!("SYNTAX ERROR: {}", err),
-            }
+            self.deactivate()
         }
     }
 
diff --git a/src/config.rs b/src/config.rs
index b5abb1e..6d0680c 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,6 +1,6 @@
 //! Home of the user configuratable content of graf karto, like keybindings and (TODO) colours etc.
 
-use crate::button::*;
+use crate::input::{Binding, Button, Input, MouseButton, Scancode};
 use ron::de::from_reader;
 use ron::ser::{to_string_pretty, PrettyConfig};
 use serde::{Deserialize, Serialize};
@@ -12,49 +12,49 @@ use std::path::Path;
 #[allow(missing_docs)]
 #[derive(Deserialize, Serialize)]
 pub struct Config {
-    pub tool_activation_keys: ToolActivationKeys,
-    pub tool_general_keys: ToolGeneralKeys,
-    pub icon_keys: IconToolKeys,
+    pub tool_activation_binds: ToolActivationBinds,
+    pub tool_general_binds: ToolGeneralBinds,
+    pub icon_binds: IconToolBinds,
 }
 
 #[allow(missing_docs)]
 #[derive(Deserialize, Serialize)]
 /// The keys used to activate the individual tools. These keystrokes will not be sent to the tools,
 /// but instead will be handled by the editor where the tools are registered.
-pub struct ToolActivationKeys {
-    pub deletion: Button,
-    pub icon: Button,
-    pub polygon_room: Button,
-    pub rect_room: Button,
-    pub selection: Button,
-    pub wall: Button,
+pub struct ToolActivationBinds {
+    pub deletion: Binding,
+    pub icon: Binding,
+    pub polygon_room: Binding,
+    pub rect_room: Binding,
+    pub selection: Binding,
+    pub wall: Binding,
 }
 
 #[derive(Deserialize, Serialize)]
 /// Keys that are useful to most tools. These are packaged so that not every tool has the same n keys
 /// and then some more.
-pub struct ToolGeneralKeys {
+pub struct ToolGeneralBinds {
     /// Keybinding to, where applicable, place a single node (usually a vertex) for the tool in
     /// question.
-    pub place_single: Button,
+    pub place_single: Binding,
     /// Finish up whatever one is doing with the current tool, without removing information.
-    pub finish: Button,
+    pub finish: Binding,
     /// Abort whatever one is doing with the current tool which means the last atomic action will not
     /// be pushed into the map items.
-    pub abort: Button,
+    pub abort: Binding,
 }
 
 #[derive(Clone, Serialize, Deserialize)]
 /// Key bindings that are individually interesting to the icon tool.
-pub struct IconToolKeys {
+pub struct IconToolBinds {
     /// Key to change to the next icon of the icon list.
-    pub next: Button,
+    pub next: Binding,
     /// Key to change to the previous icon of the icon list.
-    pub previous: Button,
+    pub previous: Binding,
     /// Rotate the working icon clockwise by a certain amount (currently 45 degrees)
-    pub rotate_clockwise: Button,
+    pub rotate_clockwise: Binding,
     /// Rotate the working icon counterclockwise by a certain amount (currently 45 degrees)
-    pub rotate_counterclockwise: Button,
+    pub rotate_counterclockwise: Binding,
 }
 
 impl Config {
@@ -94,27 +94,72 @@ impl Config {
     }
 }
 
+/// Registers all bindings from the given configuration into the input handler. Should the
+/// configuration change at runtime, the global bindings of the input handler need to be cleared and
+/// this function must be called again.
+pub fn register_bindings(config: &Config, input: &mut Input) {
+    if !input.add_global(config.tool_activation_binds.deletion.clone()) {
+        warn!("Tried to add deletion binding twice.");
+    }
+    if !input.add_global(config.tool_activation_binds.icon.clone()) {
+        warn!("Tried to add icon binding twice.");
+    }
+    if !input.add_global(config.tool_activation_binds.polygon_room.clone()) {
+        warn!("Tried to add polygon room binding twice.");
+    }
+    if !input.add_global(config.tool_activation_binds.rect_room.clone()) {
+        warn!("Tried to add rect room binding twice.");
+    }
+    if !input.add_global(config.tool_activation_binds.selection.clone()) {
+        warn!("Tried to add selection binding twice.");
+    }
+    if !input.add_global(config.tool_activation_binds.wall.clone()) {
+        warn!("Tried to add wall binding twice.");
+    }
+    if !input.add_global(config.tool_general_binds.place_single.clone()) {
+        warn!("Tried to add place single binding twice.");
+    }
+    if !input.add_global(config.tool_general_binds.finish.clone()) {
+        warn!("Tried to add finish binding twice.");
+    }
+    if !input.add_global(config.tool_general_binds.abort.clone()) {
+        warn!("Tried to add abort binding twice.");
+    }
+    if !input.add_global(config.icon_binds.next.clone()) {
+        warn!("Tried to add next binding twice.");
+    }
+    if !input.add_global(config.icon_binds.previous.clone()) {
+        warn!("Tried to add previous binding twice.");
+    }
+    if !input.add_global(config.icon_binds.rotate_clockwise.clone()) {
+        warn!("Tried to add rotate clockwise binding twice.");
+    }
+    if !input.add_global(config.icon_binds.rotate_counterclockwise.clone()) {
+        warn!("Tried to add rotate counterclockwise binding twice.");
+    }
+}
+
 impl Default for Config {
     fn default() -> Self {
         Config {
-            tool_activation_keys: ToolActivationKeys {
-                deletion: Button::Keyboard(KeyboardKey::D),
-                icon: Button::Keyboard(KeyboardKey::I),
-                polygon_room: Button::Keyboard(KeyboardKey::P),
-                rect_room: Button::Keyboard(KeyboardKey::R),
-                selection: Button::Keyboard(KeyboardKey::S),
-                wall: Button::Keyboard(KeyboardKey::W),
+            tool_activation_binds: ToolActivationBinds {
+                deletion: Button::Text('d').into(),
+                icon: Button::Text('i').into(),
+                polygon_room: Button::Text('p').into(),
+                rect_room: Button::Text('r').into(),
+                selection: Button::Text('s').into(),
+                wall: Button::Text('w').into(),
             },
-            tool_general_keys: ToolGeneralKeys {
-                place_single: Button::Mouse(MouseButton::Left),
-                finish: Button::Keyboard(KeyboardKey::Enter),
-                abort: Button::Mouse(MouseButton::Right),
+            tool_general_binds: ToolGeneralBinds {
+                place_single: Button::Mouse(MouseButton::Left).into(),
+                finish: Button::Scancode(Scancode::Enter).into(),
+                abort: Button::Mouse(MouseButton::Right).into(),
             },
-            icon_keys: IconToolKeys {
-                next: Button::Keyboard(KeyboardKey::I),
-                previous: Button::Keyboard(KeyboardKey::J),
-                rotate_clockwise: Button::Mouse(MouseButton::Right),
-                rotate_counterclockwise: Button::Keyboard(KeyboardKey::Minus),
+            icon_binds: IconToolBinds {
+                next: Button::Text('j').into(),
+                previous: Button::Text('k').into(),
+                rotate_clockwise: Button::Text('+').into(),
+                rotate_counterclockwise: Button::Text('-').into(),
             },
         }
     }
diff --git a/src/editor.rs b/src/editor.rs
index abbc401..7bf8f5e 100644
--- a/src/editor.rs
+++ b/src/editor.rs
@@ -5,8 +5,8 @@
 //! currently a difference between things that are being created (inside the editor) and things that
 //! are part of the environment (the map).
 
-use crate::button::{Button, MouseButton};
 use crate::config::Config;
+use crate::input::{Binding, Input};
 use crate::map::Map;
 use crate::snapping::Snapper;
 use crate::tool::*;
@@ -20,7 +20,7 @@ pub struct Editor {
     map: Map,
     /// HashMap that matches the ToolType with its proper activation key and of course the tool
     /// itself.
-    tools: HashMap<ToolType, (Box<dyn Tool>, Button)>,
+    tools: HashMap<ToolType, (Box<dyn Tool>, Binding)>,
     active: ToolType,
     config: Config,
 }
@@ -31,46 +31,52 @@ impl Editor {
     pub fn new(rl: &mut RaylibHandle, rlt: &RaylibThread, config: Config) -> Self {
         let map = Map::new(rl, rlt);
 
-        let mut tools: HashMap<ToolType, (Box<dyn Tool>, Button)> =
+        let mut tools: HashMap<ToolType, (Box<dyn Tool>, Binding)> =
             HashMap::with_capacity(ToolType::NumTools as usize);
 
         tools.insert(
             ToolType::RectRoomTool,
             (
                 Box::new(RectRoomTool::new()),
-                config.tool_activation_keys.rect_room,
+                config.tool_activation_binds.rect_room.clone(),
             ),
         );
         tools.insert(
             ToolType::PolygonRoomTool,
             (
                 Box::new(PolygonRoomTool::new()),
-                config.tool_activation_keys.polygon_room,
+                config.tool_activation_binds.polygon_room.clone(),
             ),
         );
         tools.insert(
             ToolType::WallTool,
-            (Box::new(WallTool::new()), config.tool_activation_keys.wall),
+            (
+                Box::new(WallTool::new()),
+                config.tool_activation_binds.wall.clone(),
+            ),
         );
         tools.insert(
             ToolType::IconTool,
             (
-                Box::new(IconTool::new(config.icon_keys.clone(), map.icon_renderer())),
-                config.tool_activation_keys.icon,
+                Box::new(IconTool::new(
+                    config.icon_binds.clone(),
+                    map.icon_renderer(),
+                )),
+                config.tool_activation_binds.icon.clone(),
             ),
         );
         tools.insert(
             ToolType::DeletionTool,
             (
                 Box::new(DeletionTool::new()),
-                config.tool_activation_keys.deletion,
+                config.tool_activation_binds.deletion.clone(),
             ),
         );
         tools.insert(
             ToolType::SelectionTool,
             (
                 Box::new(SelectionTool::new()),
-                config.tool_activation_keys.selection,
+                config.tool_activation_binds.selection.clone(),
             ),
         );
 
@@ -111,22 +117,19 @@ impl Editor {
         rl: &mut RaylibHandle,
         transform: &Transform,
         snapper: &Snapper,
-        mouse_blocked: bool,
-        keyboard_captured: bool,
+        input: &mut Input,
     ) {
         // Handle keybindings for tool change
-        if !keyboard_captured {
-            for (&tool_type, (_, activation_key)) in self.tools.iter() {
-                if activation_key.is_pressed(rl, false) {
-                    // Don't do anything if the tool does not change.
-                    if tool_type == self.active {
-                        break;
-                    }
-
-                    // Activate the tool of which the key binding has been pressed.
-                    self.set_active(tool_type);
+        for (&tool_type, (_, activation_bind)) in self.tools.iter() {
+            if input.poll_global(&activation_bind) {
+                // Don't do anything if the tool does not change.
+                if tool_type == self.active {
                     break;
                 }
+
+                // Activate the tool of which the key binding has been pressed.
+                self.set_active(tool_type);
+                break;
             }
         }
 
@@ -138,49 +141,18 @@ impl Editor {
         active_tool.update(&self.map, &snapped_mouse_pos);
 
         // Handle common keybindings many of the tools have.
-        if self
-            .config
-            .tool_general_keys
-            .place_single
-            .is_pressed(rl, mouse_blocked)
-        {
+        if input.poll_global(&self.config.tool_general_binds.place_single) {
             active_tool.place_single(&mut self.map, &snapped_mouse_pos);
         }
-        if self
-            .config
-            .tool_general_keys
-            .finish
-            .is_pressed(rl, mouse_blocked)
-        {
+        if input.poll_global(&self.config.tool_general_binds.finish) {
             active_tool.finish(&mut self.map);
         }
-        if self
-            .config
-            .tool_general_keys
-            .abort
-            .is_pressed(rl, mouse_blocked)
-        {
+        if input.poll_global(&self.config.tool_general_binds.abort) {
             active_tool.abort();
         }
 
         // Handle custom keybindings in case the tool has any.
-        let latest_button = if let Some(keyboard_key) = rl.get_key_pressed() {
-            Some(Button::Keyboard(keyboard_key.into()))
-        } else {
-            let mouse_buttons = [
-                Button::Mouse(MouseButton::Left),
-                Button::Mouse(MouseButton::Middle),
-                Button::Mouse(MouseButton::Right),
-            ];
-            mouse_buttons
-                .iter()
-                .find(|button| button.is_pressed(rl, mouse_blocked))
-                .copied()
-        };
-
-        if let Some(latest_button) = latest_button {
-            active_tool.on_button_pressed(&mut self.map, latest_button);
-        }
+        active_tool.handle_custom_bindings(&mut self.map, input);
     }
 
     /// Draw all tools and in case of the active tool also what is currently being edited by it, if
diff --git a/src/gui/tool_sidebar.rs b/src/gui/tool_sidebar.rs
index 78041e7..af6af74 100644
--- a/src/gui/tool_sidebar.rs
+++ b/src/gui/tool_sidebar.rs
@@ -3,7 +3,8 @@
 // TODO: Currently, the keyboard shortcuts for tools are handled by the editor, but a lot speaks for
 // them being handled by the ToolSidebar instead.
 
-use crate::math::{ExactSurface, Rect, Vec2};
+use crate::input::Input;
+use crate::math::Rect;
 use crate::tool::ToolType;
 use crate::Editor;
 use raylib::core::texture::Texture2D;
@@ -17,37 +18,56 @@ pub const BUTTON_FILE: &str = "assets/button/tool_buttons.png";
 /// Sidebar that renders and handles input for the tool activation buttons.
 pub struct ToolSidebar {
     button_texture: Texture2D,
+    bindings_id: usize,
+    panel_rect: Rect<u16>,
 }
 
 impl ToolSidebar {
     /// Create a new tool sidebar. There should be only one sidebar per program instance.
-    pub fn new(rl: &mut RaylibHandle, rlt: &RaylibThread) -> Self {
+    pub fn new(rl: &mut RaylibHandle, rlt: &RaylibThread, input: &mut Input) -> Self {
         let button_texture = rl
             .load_texture(rlt, BUTTON_FILE)
             .expect("Could not read file containing tool icons.");
 
-        Self { button_texture }
+        let panel_rect = Self::panel_rect(rl.get_screen_height() as u16);
+        let bindings_id = input.add_local_handler(panel_rect.clone());
+
+        Self {
+            button_texture,
+            bindings_id,
+            panel_rect,
+        }
     }
 
-    fn panel_rect(screen_height: u16) -> Rect<f32> {
+    fn panel_rect(screen_height: u16) -> Rect<u16> {
         /* The width is currently hardcoded as 104, which is
          * 64 (button-size) + 20 left gap + 20 right gap
          */
-        Rect::new(0., 0., 104., screen_height as f32)
+        Rect::new(0, 0, 104, screen_height)
     }
 
-    /// Check if the mouse is currently being captured by this GUI-element. In that case,
-    /// everything else that might want to access the mouse will be blocked.
-    pub fn mouse_captured(screen_height: u16, mouse_pos: Vec2<f32>) -> bool {
-        Self::panel_rect(screen_height).contains_point(&mouse_pos)
+    /// Update the state of the tool sidebar. Due to raylib limitations, this is not where the tools
+    /// are selected for the editor, which happens in draw.
+    pub fn update(&mut self, screen_height: u16, input: &mut Input) {
+        let new_panel_rect = Self::panel_rect(screen_height);
+        if new_panel_rect != self.panel_rect {
+            self.panel_rect = new_panel_rect;
+            input.set_binding_rect(self.bindings_id, self.panel_rect);
+        }
     }
 
     /// Draw the tool buttons and encasing panel. Because of the way raylib works, this also handles
     /// clicking on tool buttons, which may be changed in the future, should a different gui be
     /// chosen.
-    pub fn draw(&self, screen_height: u16, rld: &mut impl RaylibDrawGui, editor: &mut Editor) {
-        rld.gui_panel(Self::panel_rect(screen_height));
+    pub fn draw(&self, rld: &mut impl RaylibDrawGui, editor: &mut Editor) {
+        rld.gui_panel(Rect::new(
+            self.panel_rect.x as f32,
+            self.panel_rect.y as f32,
+            self.panel_rect.w as f32,
+            self.panel_rect.h as f32,
+        ));
 
+        // TODO: Update to new input system. Create buttons that integrate.
         let mut active = editor.active();
         for i in 0..ToolType::NumTools as usize {
             let is_current_active = active as usize == i;
diff --git a/src/input/binding.rs b/src/input/binding.rs
new file mode 100644
index 0000000..386fb66
--- /dev/null
+++ b/src/input/binding.rs
@@ -0,0 +1,123 @@
+//! Bindings module, which is a key combination that does something when pressed.
+
+use super::Button;
+use raylib::RaylibHandle;
+use serde::{Deserialize, Serialize};
+
+/// Binding struct, which holds any number of buttons (keyboard and mouse may be mixed, if desired)
+#[derive(Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
+pub struct Binding {
+    buttons: Vec<Button>,
+}
+
+impl Binding {
+    /// Create a new binding from a range of buttons. The button order does not matter, but at least
+    /// one button must be supplied.
+    pub fn new(buttons: Vec<Button>) -> Self {
+        if buttons.is_empty() {
+            panic!("Tried to create a binding without any keys.");
+        }
+
+        Self { buttons }
+    }
+
+    /// Returns `true` if only mouse buttons are present in this binding, otherwise false.
+    pub fn mouse_only(&self) -> bool {
+        for button in &self.buttons {
+            match button {
+                Button::Mouse(_) => continue,
+                _ => return false,
+            }
+        }
+
+        true
+    }
+
+    /// Returns `true` if only keyboard buttons are present in this binding, otherwise false.
+    pub fn keyboard_only(&self) -> bool {
+        for button in &self.buttons {
+            match button {
+                Button::Scancode(_) | Button::Text(_) => continue,
+                _ => return false,
+            }
+        }
+
+        true
+    }
+
+    /// Returns `true` if at least one mouse button is required for this binding to work.
+    pub fn has_mouse_component(&self) -> bool {
+        self.buttons.iter().any(|b| {
+            if let Button::Mouse(_) = b {
+                true
+            } else {
+                false
+            }
+        })
+    }
+
+    /// Returns `true` if at least one keyboard button is required for this binding to work.
+    pub fn has_keyboard_component(&self) -> bool {
+        self.buttons.iter().any(|b| match b {
+            Button::Scancode(_) | Button::Text(_) => true,
+            _ => false,
+        })
+    }
+
+    /// Checks if this binding was pressed this frame. Heavily dependent on input struct working
+    /// correctly.
+    pub(super) fn is_pressed(
+        &self,
+        allow_mouse: bool,
+        allow_keyboard: bool,
+        text: &str,
+        rl: &RaylibHandle,
+    ) -> bool {
+        let mut distinct_press = false;
+        for button in &self.buttons {
+            match *button {
+                Button::Mouse(mouse_button) => {
+                    if !allow_mouse || !rl.is_mouse_button_down(mouse_button.into()) {
+                        return false;
+                    }
+
+                    /* Check if the button has been pressed in this frame exactly.
+                     * This prevents activating the same keybinding every frame
+                     * while the buttons are being held down.
+                     */
+                    if rl.is_mouse_button_pressed(mouse_button.into()) {
+                        distinct_press = true;
+                    }
+                }
+                Button::Scancode(code) => {
+                    if !allow_keyboard || !rl.is_key_down(code.into()) {
+                        return false;
+                    }
+
+                    // Check the same as with the mouse button.
+                    if rl.is_key_pressed(code.into()) {
+                        distinct_press = true;
+                    }
+                }
+                Button::Text(c) => {
+                    if !allow_keyboard || !text.contains(c) {
+                        return false;
+                    }
+
+                    // Always distinct, since on triggering, the text is cleared.
+                    distinct_press = true;
+                }
+            }
+        }
+
+        distinct_press
+    }
+}
+
+impl From<Button> for Binding {
+    fn from(button: Button) -> Self {
+        Self {
+            buttons: vec![button],
+        }
+    }
+}
diff --git a/src/input/button.rs b/src/input/button.rs
new file mode 100644
index 0000000..e9ef45e
--- /dev/null
+++ b/src/input/button.rs
@@ -0,0 +1,177 @@
+//! Reimplementation crate of the KeyboardKey and MouseButton structs of raylib, because they do
+//! not implement `serde::Serialize` and `serde::Deserialize`. If you have a better idea on how to
+//! handle it, feel free.
+
+use raylib::ffi::{KeyboardKey as rlKeyboardKey, MouseButton as rlMouseButton};
+use serde::{Deserialize, Serialize};
+use std::mem;
+
+/// Abstraction over different key-types. A binding can be constructed from this button-type or
+/// multiple button-presses can be chained together to create a binding. Just be careful to not
+/// have bindings where one binding is included in another. This includes bindings where on your
+/// keyboard you have Scancode(Shift) + Scancode(A) and another binding of Text(A) (Text(a) would
+/// be okay)
+#[derive(Serialize, Deserialize, Debug, Copy, Clone, PartialEq, Eq, Hash)]
+pub enum Button {
+    /// A button on the mouse (raylib supports just three :/ )
+    Mouse(MouseButton),
+    /// Scancode that is sent by the OS. This can change between OSes, but stays the same between
+    /// runs and layout changes in the keyboard.
+    Scancode(Scancode),
+    /// The text input read from the operating system. This means even characters composed or
+    /// non-ASCII characters can be used. I mean, who doesn't want to bind the wall tool to 壁?
+    Text(char),
+}
+
+#[allow(missing_docs)]
+#[repr(u32)]
+#[derive(Serialize, Deserialize, Debug, Copy, Clone, PartialEq, Eq, Hash)]
+pub enum MouseButton {
+    Left = 0,
+    Right = 1,
+    Middle = 2,
+}
+
+#[allow(missing_docs)]
+#[repr(u32)]
+#[derive(Serialize, Deserialize, Debug, Copy, Clone, PartialEq, Eq, Hash)]
+pub enum Scancode {
+    Apostrophe = 39,
+    Comma = 44,
+    Minus = 45,
+    Period = 46,
+    Slash = 47,
+    Zero = 48,
+    One = 49,
+    Two = 50,
+    Three = 51,
+    Four = 52,
+    Five = 53,
+    Six = 54,
+    Seven = 55,
+    Eight = 56,
+    Nine = 57,
+    Semicolon = 59,
+    Equal = 61,
+    A = 65,
+    B = 66,
+    C = 67,
+    D = 68,
+    E = 69,
+    F = 70,
+    G = 71,
+    H = 72,
+    I = 73,
+    J = 74,
+    K = 75,
+    L = 76,
+    M = 77,
+    N = 78,
+    O = 79,
+    P = 80,
+    Q = 81,
+    R = 82,
+    S = 83,
+    T = 84,
+    U = 85,
+    V = 86,
+    W = 87,
+    X = 88,
+    Y = 89,
+    Z = 90,
+    Space = 32,
+    Escape = 256,
+    Enter = 257,
+    Tab = 258,
+    Backspace = 259,
+    Insert = 260,
+    Delete = 261,
+    Right = 262,
+    Left = 263,
+    Down = 264,
+    Up = 265,
+    PageUp = 266,
+    PageDown = 267,
+    Home = 268,
+    End = 269,
+    CapsLock = 280,
+    ScrollLock = 281,
+    NumLock = 282,
+    PrintScreen = 283,
+    Pause = 284,
+    F1 = 290,
+    F2 = 291,
+    F3 = 292,
+    F4 = 293,
+    F5 = 294,
+    F6 = 295,
+    F7 = 296,
+    F8 = 297,
+    F9 = 298,
+    F10 = 299,
+    F11 = 300,
+    F12 = 301,
+    LeftShift = 340,
+    LeftControl = 341,
+    LeftAlt = 342,
+    LeftSuper = 343,
+    RightShift = 344,
+    RightControl = 345,
+    RightAlt = 346,
+    RightSuper = 347,
+    Menu = 348,
+    LeftBracket = 91,
+    Backslash = 92,
+    RightBracket = 93,
+    Grave = 96,
+    Keypad0 = 320,
+    Keypad1 = 321,
+    Keypad2 = 322,
+    Keypad3 = 323,
+    Keypad4 = 324,
+    Keypad5 = 325,
+    Keypad6 = 326,
+    Keypad7 = 327,
+    Keypad8 = 328,
+    Keypad9 = 329,
+    KeypadDecimal = 330,
+    KeypadDivide = 331,
+    KeypadMultiply = 332,
+    KeypadSubtract = 333,
+    KeypadAdd = 334,
+    KeypadEnter = 335,
+    KeypadEqual = 336,
+}
+
+impl From<rlMouseButton> for Button {
+    fn from(button: rlMouseButton) -> Self {
+        Self::Mouse(MouseButton::from(button))
+    }
+}
+impl From<rlKeyboardKey> for Button {
+    fn from(key: rlKeyboardKey) -> Self {
+        Self::Scancode(Scancode::from(key))
+    }
+}
+
+impl From<rlMouseButton> for MouseButton {
+    fn from(button: rlMouseButton) -> Self {
+        unsafe { mem::transmute(button as u32) }
+    }
+}
+impl Into<rlMouseButton> for MouseButton {
+    fn into(self) -> rlMouseButton {
+        unsafe { mem::transmute(self as u32) }
+    }
+}
+
+impl From<rlKeyboardKey> for Scancode {
+    fn from(key: rlKeyboardKey) -> Self {
+        unsafe { mem::transmute(key as u32) }
+    }
+}
+impl Into<rlKeyboardKey> for Scancode {
+    fn into(self) -> rlKeyboardKey {
+        unsafe { mem::transmute(self as u32) }
+    }
+}
diff --git a/src/input/mod.rs b/src/input/mod.rs
new file mode 100644
index 0000000..e8b1821
--- /dev/null
+++ b/src/input/mod.rs
@@ -0,0 +1,200 @@
+//! Input with binding abstraction
+//!
+//! Binding keys or combinations to specific actions with just raylib alone is difficult to handle in
+//! input-heavy applications, as opposed to games. This is an optimisation effort. To understand how
+//! it works, the first thing to know is that there are two main modes for bindings, which are local
+//! and global. A local binding is specific to a certain area of the window and is used to block the
+//! mouse from being sent to many different targets (think of a pop-up window over the editor, which
+//! must capture the mouse). Global bindings will be processed as long as no local binding has
+//! prevalence, but they do not have an area that needs to be managed by a handler.
+//!
+//! In summary, the local <-> global distinction is used to capture the mouse.
+//!
+//! Some elements want to capture the keyboard, for instance, when activating a text box, the text
+//! input should only go to this box, but should a tool be bound to a character, it should not
+//! activate when typing. For this purpose, any element may seize control as long as no other element
+//! still has the focus. A channel is opened and no bindings will be processed. Instead the text
+//! together with a few control characters is relayed directly to the channel, until the receiver
+//! hangs up.
+//!
+//! In summary, a channel is used to seize control of the keyboard when typing into an element.
+
+pub mod binding;
+pub mod button;
+
+pub use binding::*;
+pub use button::*;
+
+use crate::math::{ExactSurface, Rect, Vec2};
+use crate::stable_vec::StableVec;
+use raylib::ffi::KeyboardKey;
+use raylib::RaylibHandle;
+use std::collections::HashMap;
+use std::sync::mpsc::{self, Receiver, Sender};
+
+/// Input and binding handler this should only be created once per instance.
+pub struct Input {
+    global_bindings: HashMap<Binding, bool>,
+    local_bindings: StableVec<(Rect<u16>, HashMap<Binding, bool>)>,
+    last_text: String,
+    text_pipe: Option<Sender<char>>,
+    mouse_pos: Vec2<u16>,
+}
+
+impl Input {
+    /// Create a new Input and binding handler.
+    pub fn new(rl: &RaylibHandle) -> Self {
+        Self {
+            global_bindings: HashMap::new(),
+            local_bindings: StableVec::new(),
+            last_text: String::new(),
+            text_pipe: None,
+            mouse_pos: Vec2::new(rl.get_mouse_x() as u16, rl.get_mouse_y() as u16),
+        }
+    }
+
+    /// Must be called on every frame of the program, since keypresses will be processed here. This
+    /// will not activate the binding function directly, since raylib is heavily polling focused.
+    pub fn update(&mut self, rl: &mut RaylibHandle) {
+        self.mouse_pos = Vec2::new(rl.get_mouse_x() as u16, rl.get_mouse_y() as u16);
+        /* Read the next character to be sent with some extra characters
+         * raylib doesn't recognize to be valid.
+         */
+        let c = if rl.is_key_pressed(KeyboardKey::KEY_ENTER) {
+            Some('\n')
+        } else if rl.is_key_pressed(KeyboardKey::KEY_ESCAPE) {
+            Some('\x1B')
+        } else if rl.is_key_pressed(KeyboardKey::KEY_BACKSPACE) {
+            Some('\x7f')
+        } else {
+            rl.get_key_pressed_number().map(|c| c as u8 as char)
+        };
+
+        /* Send the character to the listening entity or push it to the text that
+         * is currently being read for the keybindings.
+         */
+        if let Some(text_pipe) = self.text_pipe.as_mut() {
+            if let Some(c) = c {
+                if text_pipe.send(c).is_err() {
+                    self.last_text.push(c);
+                    self.text_pipe = None;
+                }
+            }
+        } else if let Some(c) = c {
+            self.last_text.push(c);
+        }
+
+        /* Update the local parts. The local stack has priority over the global
+         * bindings, so it is processed first, with the priority going from the
+         * top of the stack to the bottom in that order (reversed vec order)
+         */
+        let mut mouse_blocked = false;
+        for (_, (rect, bindings)) in self.local_bindings.id_iter_mut().rev() {
+            if rect.contains_point(&self.mouse_pos) {
+                for (binding, state) in &mut bindings.iter_mut() {
+                    *state = binding.is_pressed(
+                        !mouse_blocked,
+                        self.text_pipe.is_none(),
+                        &self.last_text,
+                        rl,
+                    );
+
+                    if *state {
+                        self.last_text.clear();
+                    }
+                }
+
+                mouse_blocked = true;
+                break;
+            }
+        }
+
+        /* Process the global bindings, as long as nothing prevents the bindings
+         * from being processed like a local binding or the text being captured.
+         */
+        for (binding, state) in self.global_bindings.iter_mut() {
+            *state = binding.is_pressed(
+                !mouse_blocked,
+                self.text_pipe.is_none(),
+                &self.last_text,
+                rl,
+            );
+
+            if *state {
+                self.last_text.clear();
+            }
+        }
+    }
+
+    /// Add a global binding. This is necessary so the input knows which key presses to monitor.
+    pub fn add_global(&mut self, binding: Binding) -> bool {
+        self.global_bindings.insert(binding, false).is_none()
+    }
+
+    /// Add a local binding handler for the given area. Returns a unique and unchanging handler id.
+    /// Handlers with higher ids (that have been added later) are preferred over old handlers.
+    pub fn add_local_handler(&mut self, area: Rect<u16>) -> usize {
+        self.local_bindings.push((area, HashMap::new()))
+    }
+
+    /// Add a local binding for the given handler.
+    pub fn add_local(&mut self, handler_id: usize, binding: Binding) -> bool {
+        self.local_bindings
+            .get_mut(handler_id)
+            .expect("Handler does not exist")
+            .1
+            .insert(binding, false)
+            .is_none()
+    }
+
+    /// Update the binding rectangle of a handler.
+    pub fn set_binding_rect(&mut self, handler_id: usize, rect: Rect<u16>) {
+        self.local_bindings
+            .get_mut(handler_id)
+            .expect("Handler does not exist")
+            .0 = rect;
+    }
+
+    /// Check if a global binding has been activated this frame. If so, it returns true.
+    /// This will only activate once, so there is no need to worry about multiple function calls
+    /// when the user keeps the button down.
+    pub fn poll_global(&mut self, binding: &Binding) -> bool {
+        let state = self.global_bindings.get_mut(&binding);
+        if state.is_none() {
+            error!("Tried to poll binding that isn't registered.");
+            return false;
+        }
+
+        *state.unwrap()
+    }
+
+    /// Like `poll_global` bun instead checks the bindings of the local handler with the given id.
+    pub fn poll_local(&mut self, handler_id: usize, binding: &Binding) -> bool {
+        let (_, bindings) = self
+            .local_bindings
+            .get_mut(handler_id)
+            .expect("Invalid binding handler id");
+
+        let state = bindings.get_mut(&binding);
+        if state.is_none() {
+            error!("Tried to poll binding that isn't registered.");
+            return false;
+        }
+
+        *state.unwrap()
+    }
+
+    /// Attempts to capture all keyboard input from here on. If no other component is currently
+    /// capturing, it returns a receiver that can be used. When the entity no longer wants to
+    /// capture the keyboard, control must be returned by dropping the receiver.
+    pub fn try_capture_keyboard(&mut self) -> Option<Receiver<char>> {
+        if self.text_pipe.is_some() {
+            return None;
+        }
+
+        let (tx, rx) = mpsc::channel();
+        self.text_pipe = Some(tx);
+
+        Some(rx)
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index 4d6f4ba..3c582d9 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -21,16 +21,17 @@
 #[macro_use]
 extern crate log;
 
-pub mod button;
 pub mod cli;
 pub mod colours;
 pub mod config;
 pub mod editor;
 pub mod grid;
 pub mod gui;
+pub mod input;
 pub mod map;
 pub mod math;
 pub mod snapping;
+pub mod stable_vec;
 pub mod svg;
 pub mod tool;
 pub mod transform;
@@ -41,6 +42,7 @@ use config::Config;
 use editor::Editor;
 use float_cmp::F64Margin;
 use gui::{DimensionIndicator, ToolSidebar};
+use input::Input;
 use raylib::prelude::*;
 use snapping::Snapper;
 use std::ffi::CString;
@@ -96,11 +98,13 @@ fn main() {
         &CString::new(GUI_STYLE).expect("Could not create C string from style file name"),
     ));
 
+    let mut input = Input::new(&rl);
+    config::register_bindings(&config, &mut input);
     let mut editor = Editor::new(&mut rl, &thread, config);
     let mut dimension_indicator = DimensionIndicator::new();
-    let tool_sidebar = ToolSidebar::new(&mut rl, &thread);
+    let mut tool_sidebar = ToolSidebar::new(&mut rl, &thread, &mut input);
     let mut snapper = Snapper::default();
-    let mut cli = CLI::new();
+    let mut cli = CLI::new(&mut input);
 
     let mut transform = Transform::new();
     let mut last_mouse_pos = rl.get_mouse_position();
@@ -108,6 +112,8 @@ fn main() {
         let screen_width = rl.get_screen_width();
         let screen_height = rl.get_screen_height();
 
+        input.update(&mut rl);
+
         // Move the canvas together with the mouse
         if rl.is_mouse_button_down(MouseButton::MOUSE_MIDDLE_BUTTON) {
             transform.move_by_px(&(rl.get_mouse_position() - last_mouse_pos).into());
@@ -125,16 +131,11 @@ fn main() {
             );
         }
 
-        cli.update(&mut rl, &mut editor);
+        cli.update(&mut editor, &mut input);
         dimension_indicator.update(editor.map_mut(), &mut rl);
         snapper.update(&mut rl, cli.active());
-        editor.update(
-            &mut rl,
-            &transform,
-            &snapper,
-            ToolSidebar::mouse_captured(screen_height as u16, last_mouse_pos.into()),
-            cli.active(),
-        );
+        editor.update(&mut rl, &transform, &snapper, &mut input);
+        tool_sidebar.update(screen_height as u16, &mut input);
 
         // Drawing section
         {
@@ -144,7 +145,7 @@ fn main() {
             editor.map().draw(&mut d, &transform);
 
             editor.draw_tools(&mut d, &transform);
-            tool_sidebar.draw(screen_height as u16, &mut d, &mut editor);
+            tool_sidebar.draw(&mut d, &mut editor);
             snapper.draw(&mut d);
             gui::position_indicator_draw(&mut d, last_mouse_pos.into(), &transform, &snapper);
             dimension_indicator.draw(&mut d, &transform);
diff --git a/src/math/rect.rs b/src/math/rect.rs
index adb608b..a8326bc 100644
--- a/src/math/rect.rs
+++ b/src/math/rect.rs
@@ -3,9 +3,9 @@
 use super::{ExactSurface, LineSegment, Polygon, Vec2};
 //use alga::general::{Additive, Identity};
 use nalgebra::{RealField, Scalar};
-use num_traits::{NumCast, ToPrimitive};
+use num_traits::{NumCast, ToPrimitive, Zero};
 use serde::{Deserialize, Serialize};
-use std::ops::{Add, AddAssign};
+use std::ops::{Add, AddAssign, Sub};
 
 /// Represents a Rectangle with the value type T.
 #[derive(Copy, Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
@@ -149,7 +149,10 @@ impl<T: Scalar + Copy> Rect<T> {
     }
 }
 
-impl<T: RealField> ExactSurface<T> for Rect<T> {
+impl<T: Scalar + Copy> ExactSurface<T> for Rect<T>
+where
+    T: Add<Output = T> + PartialOrd + Sub<Output = T> + Zero,
+{
     fn contains_point(&self, point: &Vec2<T>) -> bool {
         point.x >= self.x
             && point.x <= self.x + self.w
diff --git a/src/math/surface.rs b/src/math/surface.rs
index 088ac47..21c3865 100644
--- a/src/math/surface.rs
+++ b/src/math/surface.rs
@@ -2,7 +2,7 @@
 
 use super::{LineSegment, Polygon, Rect, Vec2};
 use float_cmp::ApproxEq;
-use nalgebra::RealField;
+use nalgebra::{RealField, Scalar};
 
 /// Trait that describes an area in the vector space on the field of T, with T unable to be
 /// used without rounding.
@@ -28,7 +28,7 @@ where
 }
 
 /// The same as Surface, but the vector space will be assumed to be perfectly divideable or checkable.
-pub trait ExactSurface<T: RealField> {
+pub trait ExactSurface<T: Scalar + Copy> {
     /// Checks if a point lies on this surface.
     fn contains_point(&self, point: &Vec2<T>) -> bool;
 
diff --git a/src/stable_vec.rs b/src/stable_vec.rs
new file mode 100644
index 0000000..38eb162
--- /dev/null
+++ b/src/stable_vec.rs
@@ -0,0 +1,107 @@
+//! Stable vec is a vector that guarantees its content access position does not change.
+
+use std::ops::Deref;
+use std::slice::IterMut;
+
+/// Works like Vec, but with an additional field, where the position information is saved. Does not
+/// support inserting elements in arbitrary positions, since that may shift the data. Removing data
+/// in the middle is fine, however.
+pub struct StableVec<T> {
+    data: Vec<(usize, T)>,
+}
+
+/// Mutable iterator over a stable vector. Similar to enumerate, but since only the elements actually
+/// in the vector are iterated there can be holes in the enumeration (i -> i+1 not guaranteed).
+pub struct IdIterMut<'a, T> {
+    internal: IterMut<'a, (usize, T)>,
+}
+
+impl<T> StableVec<T> {
+    /// Create a new, empty StableVec
+    pub fn new() -> Self {
+        Self { data: Vec::new() }
+    }
+
+    /// Add an item to the end of the vector. Returns its stable id. (`len()-1 != last_element_id`)
+    pub fn push(&mut self, item: T) -> usize {
+        if self.data.is_empty() {
+            self.data.push((0, item));
+            0
+        } else {
+            let id = self.data.last().unwrap().0 + 1;
+            self.data.push((id, item));
+            id
+        }
+    }
+
+    // Find the internal position of the given id in `O(log n)`
+    fn find_pos(&self, id: usize) -> Result<usize, usize> {
+        self.data.binary_search_by(|x| x.0.cmp(&id))
+    }
+
+    /// Get the item with the given id from the vec, if it exists. Unlike in a normal vec, this is
+    /// not `O(1)` but `O(log n)`.
+    pub fn get(&self, id: usize) -> Option<&T> {
+        match self.find_pos(id) {
+            Ok(pos) => Some(&self.data[pos].1),
+            Err(_) => None,
+        }
+    }
+
+    /// Get the item with the id mutably. Like `get()` this is also `O(log n)`
+    pub fn get_mut(&mut self, id: usize) -> Option<&mut T> {
+        match self.find_pos(id) {
+            Ok(pos) => Some(&mut self.data[pos].1),
+            Err(_) => None,
+        }
+    }
+
+    /// Remove the item with the given id from the vector, returning it, if it existed.
+    pub fn remove(&mut self, id: usize) -> Option<T> {
+        match self.find_pos(id) {
+            Ok(pos) => Some(self.data.remove(pos).1),
+            Err(_) => None,
+        }
+    }
+
+    /// Create an id enumerating iterator over the StableVec.
+    pub fn id_iter_mut(&mut self) -> IdIterMut<'_, T> {
+        IdIterMut::new(&mut self.data)
+    }
+}
+
+impl<T> Default for StableVec<T> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl<T> Deref for StableVec<T> {
+    type Target = Vec<(usize, T)>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.data
+    }
+}
+
+impl<'a, T> IdIterMut<'a, T> {
+    pub(super) fn new(id_vec: &'a mut [(usize, T)]) -> Self {
+        Self {
+            internal: id_vec.iter_mut(),
+        }
+    }
+}
+
+impl<'a, T> Iterator for IdIterMut<'a, T> {
+    type Item = (usize, &'a mut T);
+
+    fn next(&mut self) -> Option<Self::Item> {
+        self.internal.next().map(|(id, item)| (*id, item))
+    }
+}
+
+impl<'a, T> DoubleEndedIterator for IdIterMut<'a, T> {
+    fn next_back(&mut self) -> Option<Self::Item> {
+        self.internal.next_back().map(|(id, item)| (*id, item))
+    }
+}
diff --git a/src/tool/icon_tool.rs b/src/tool/icon_tool.rs
index c9e671e..8b4afc0 100644
--- a/src/tool/icon_tool.rs
+++ b/src/tool/icon_tool.rs
@@ -1,8 +1,8 @@
 //! Tool for creating icons. For explanation of icons, please see
 //! [the icon module](crate::map::icon).
 
-use crate::button::Button;
-use crate::config::IconToolKeys;
+use crate::config::IconToolBinds;
+use crate::input::Input;
 use crate::map::icon_renderer::IconRenderer;
 use crate::map::{Icon, Map, Mappable};
 use crate::math::Vec2;
@@ -13,7 +13,7 @@ use std::rc::Rc;
 
 /// The icon tool itself.
 pub struct IconTool {
-    keybindings: IconToolKeys,
+    keybindings: IconToolBinds,
     /// Saves whether the IconTool is the currently active tool or not.
     active: bool,
     /// The information of the icon that should be placed / is currently being placed, if it
@@ -25,7 +25,7 @@ pub struct IconTool {
 impl IconTool {
     /// Create a new icon tool that renders icons with the provided icon renderer. There should only
     /// be one instance of the tool for the program, which should be created in the editor.
-    pub fn new(keybindings: IconToolKeys, renderer: Rc<IconRenderer>) -> Self {
+    pub fn new(keybindings: IconToolBinds, renderer: Rc<IconRenderer>) -> Self {
         Self {
             keybindings,
             active: false,
@@ -58,15 +58,18 @@ impl Tool for IconTool {
         map.push_icon(self.current_icon.clone());
     }
 
-    fn on_button_pressed(&mut self, _map: &mut Map, button: Button) {
-        if button == self.keybindings.next {
+    fn handle_custom_bindings(&mut self, _map: &mut Map, input: &mut Input) {
+        if input.poll_global(&self.keybindings.next) {
             self.current_icon.id = (self.current_icon.id + 1) % self.renderer.num_icons();
-        } else if button == self.keybindings.previous {
+        }
+        if input.poll_global(&self.keybindings.previous) {
             self.current_icon.id =
                 (self.current_icon.id + self.renderer.num_icons() - 1) % self.renderer.num_icons();
-        } else if button == self.keybindings.rotate_clockwise {
+        }
+        if input.poll_global(&self.keybindings.rotate_clockwise) {
             self.current_icon.rotation += 45.;
-        } else if button == self.keybindings.rotate_counterclockwise {
+        }
+        if input.poll_global(&self.keybindings.rotate_counterclockwise) {
             self.current_icon.rotation -= 45.;
         }
     }
diff --git a/src/tool/mod.rs b/src/tool/mod.rs
index 4130244..b3fae80 100644
--- a/src/tool/mod.rs
+++ b/src/tool/mod.rs
@@ -20,7 +20,7 @@ pub use rect_room_tool::RectRoomTool;
 pub use selection_tool::SelectionTool;
 pub use wall_tool::WallTool;
 
-use crate::button::Button;
+use crate::input::Input;
 use crate::map::Map;
 use crate::math::Vec2;
 use crate::transform::Transform;
@@ -82,5 +82,5 @@ pub trait Tool {
 
     /// If there are any additional keybindings that need to be handled by this tool, these can be
     /// handled here.
-    fn on_button_pressed(&mut self, _map: &mut Map, _button: Button) {}
+    fn handle_custom_bindings(&mut self, _map: &mut Map, _input: &mut Input) {}
 }
-- 
cgit v1.2.3-70-g09d2