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Event.cs
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// Unity C# reference source
// Copyright (c) Unity Technologies. For terms of use, see
// https://unity3d.com/legal/licenses/Unity_Reference_Only_License
using System;
using System.Runtime.InteropServices;
using UnityEngine.Bindings;
namespace UnityEngine
{
// A UnityGUI event.
[StructLayout(LayoutKind.Sequential)]
public sealed partial class Event
{
public Event()
{
m_Ptr = Internal_Create(0);
}
public Event(int displayIndex)
{
m_Ptr = Internal_Create(displayIndex);
}
// Copy an event
public Event(Event other)
{
if (other == null)
throw new ArgumentException("Event to copy from is null.");
m_Ptr = Internal_Copy(other.m_Ptr);
}
~Event()
{
if (m_Ptr != IntPtr.Zero)
{
Internal_Destroy(m_Ptr);
m_Ptr = IntPtr.Zero;
}
}
internal static void CleanupRoots()
{
// Required for application quite, so we can force GC to collect root objects before Unity managers are destroyed
s_Current = null;
s_MasterEvent = null;
}
[NonSerialized]
internal IntPtr m_Ptr;
[VisibleToOtherModules("UnityEngine.UIElementsModule")]
internal void CopyFrom(Event e)
{
// Copies the event data without allocating a new event on the native side.
if (e.m_Ptr != m_Ptr)
{
CopyFromPtr(e.m_Ptr);
}
}
[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
[Obsolete("Use HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);", true)]
public Ray mouseRay { get { return new Ray(Vector3.up, Vector3.up); } set {}}
// Is Shift held down? (RO)
public bool shift
{
get { return (modifiers & EventModifiers.Shift) != 0; }
set { if (!value) modifiers &= ~EventModifiers.Shift; else modifiers |= EventModifiers.Shift; }
}
// Is Control key held down? (RO)
public bool control
{
get {return (modifiers & EventModifiers.Control) != 0; }
set { if (!value) modifiers &= ~EventModifiers.Control; else modifiers |= EventModifiers.Control; }
}
// Is Alt/Option key held down? (RO)
public bool alt
{
get { return (modifiers & EventModifiers.Alt) != 0; }
set { if (!value) modifiers &= ~EventModifiers.Alt; else modifiers |= EventModifiers.Alt; }
}
// Is Command/Windows key held down? (RO)
public bool command
{
get { return (modifiers & EventModifiers.Command) != 0; }
set { if (!value) modifiers &= ~EventModifiers.Command; else modifiers |= EventModifiers.Command; }
}
// Is Caps Lock on? (RO)
public bool capsLock
{
get { return (modifiers & EventModifiers.CapsLock) != 0; }
set { if (!value) modifiers &= ~EventModifiers.CapsLock; else modifiers |= EventModifiers.CapsLock; }
}
// Is the current keypress on the numeric keyboard? (RO)
public bool numeric
{
get { return (modifiers & EventModifiers.Numeric) != 0; }
set { if (!value) modifiers &= ~EventModifiers.Numeric; else modifiers |= EventModifiers.Numeric; }
}
// Is the current keypress a function key? (RO)
public bool functionKey => (modifiers & EventModifiers.FunctionKey) != 0;
// The current event that's being processed right now.
// TODO: set this to null outside the event loop.
//
public static Event current
{
get
{
// return null if Event.current is queried outside OnGUI
// Only in editor because of backwards compatible.
if (GUIUtility.guiDepth > 0)
return s_Current;
else
return null;
}
set
{
s_Current = value ?? s_MasterEvent;
Internal_SetNativeEvent(s_Current.m_Ptr);
}
}
static Event s_Current;
static Event s_MasterEvent;
// Is this event a keyboard event? (RO)
public bool isKey
{
get { EventType t = type; return t == EventType.KeyDown || t == EventType.KeyUp; }
}
// Is this event a mouse event? (RO)
public bool isMouse
{
get
{
EventType t = type;
return t == EventType.MouseMove
|| t == EventType.MouseDown
|| t == EventType.MouseUp
|| t == EventType.MouseDrag
|| t == EventType.ContextClick
|| t == EventType.MouseEnterWindow
|| t == EventType.MouseLeaveWindow;
}
}
// Is this event a scroll wheel event? (RO)
public bool isScrollWheel
{
get { EventType t = type; return t == EventType.ScrollWheel; }
}
// Create a keyboard event.
public static Event KeyboardEvent(string key)
{
Event evt = new Event(0) {type = EventType.KeyDown};
if (string.IsNullOrEmpty(key))
return evt;
int startIdx = 0;
bool found = false;
do
{
found = true;
if (startIdx >= key.Length)
{
found = false; break;
}
switch (key[startIdx])
{
case '&': // Alt
evt.modifiers |= EventModifiers.Alt; startIdx++;
break;
case '^': // Ctrl
evt.modifiers |= EventModifiers.Control; startIdx++;
break;
case '%':
evt.modifiers |= EventModifiers.Command; startIdx++;
break;
case '#':
evt.modifiers |= EventModifiers.Shift; startIdx++;
break;
default:
found = false;
break;
}
}
while (found);
string subStr = key.Substring(startIdx, key.Length - startIdx).ToLowerInvariant();
switch (subStr)
{
case "[0]": evt.character = '0'; evt.keyCode = KeyCode.Keypad0; break;
case "[1]": evt.character = '1'; evt.keyCode = KeyCode.Keypad1; break;
case "[2]": evt.character = '2'; evt.keyCode = KeyCode.Keypad2; break;
case "[3]": evt.character = '3'; evt.keyCode = KeyCode.Keypad3; break;
case "[4]": evt.character = '4'; evt.keyCode = KeyCode.Keypad4; break;
case "[5]": evt.character = '5'; evt.keyCode = KeyCode.Keypad5; break;
case "[6]": evt.character = '6'; evt.keyCode = KeyCode.Keypad6; break;
case "[7]": evt.character = '7'; evt.keyCode = KeyCode.Keypad7; break;
case "[8]": evt.character = '8'; evt.keyCode = KeyCode.Keypad8; break;
case "[9]": evt.character = '9'; evt.keyCode = KeyCode.Keypad9; break;
case "[.]": evt.character = '.'; evt.keyCode = KeyCode.KeypadPeriod; break;
case "[/]": evt.character = '/'; evt.keyCode = KeyCode.KeypadDivide; break;
case "[-]": evt.character = '-'; evt.keyCode = KeyCode.KeypadMinus; break;
case "[+]": evt.character = '+'; evt.keyCode = KeyCode.KeypadPlus; break;
case "[=]": evt.character = '='; evt.keyCode = KeyCode.KeypadEquals; break;
case "[equals]": evt.character = '='; evt.keyCode = KeyCode.KeypadEquals; break;
case "[enter]": evt.character = '\n'; evt.keyCode = KeyCode.KeypadEnter; break;
case "up": evt.keyCode = KeyCode.UpArrow; evt.modifiers |= EventModifiers.FunctionKey; break;
case "down": evt.keyCode = KeyCode.DownArrow; evt.modifiers |= EventModifiers.FunctionKey; break;
case "left": evt.keyCode = KeyCode.LeftArrow; evt.modifiers |= EventModifiers.FunctionKey; break;
case "right": evt.keyCode = KeyCode.RightArrow; evt.modifiers |= EventModifiers.FunctionKey; break;
case "insert": evt.keyCode = KeyCode.Insert; evt.modifiers |= EventModifiers.FunctionKey; break;
case "home": evt.keyCode = KeyCode.Home; evt.modifiers |= EventModifiers.FunctionKey; break;
case "end": evt.keyCode = KeyCode.End; evt.modifiers |= EventModifiers.FunctionKey; break;
case "pgup": evt.keyCode = KeyCode.PageDown; evt.modifiers |= EventModifiers.FunctionKey; break;
case "page up": evt.keyCode = KeyCode.PageUp; evt.modifiers |= EventModifiers.FunctionKey; break;
case "pgdown": evt.keyCode = KeyCode.PageUp; evt.modifiers |= EventModifiers.FunctionKey; break;
case "page down": evt.keyCode = KeyCode.PageDown; evt.modifiers |= EventModifiers.FunctionKey; break;
case "backspace": evt.keyCode = KeyCode.Backspace; evt.modifiers |= EventModifiers.FunctionKey; break;
case "delete": evt.keyCode = KeyCode.Delete; evt.modifiers |= EventModifiers.FunctionKey; break;
case "tab": evt.keyCode = KeyCode.Tab; break;
case "f1": evt.keyCode = KeyCode.F1; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f2": evt.keyCode = KeyCode.F2; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f3": evt.keyCode = KeyCode.F3; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f4": evt.keyCode = KeyCode.F4; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f5": evt.keyCode = KeyCode.F5; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f6": evt.keyCode = KeyCode.F6; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f7": evt.keyCode = KeyCode.F7; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f8": evt.keyCode = KeyCode.F8; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f9": evt.keyCode = KeyCode.F9; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f10": evt.keyCode = KeyCode.F10; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f11": evt.keyCode = KeyCode.F11; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f12": evt.keyCode = KeyCode.F12; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f13": evt.keyCode = KeyCode.F13; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f14": evt.keyCode = KeyCode.F14; evt.modifiers |= EventModifiers.FunctionKey; break;
case "f15": evt.keyCode = KeyCode.F15; evt.modifiers |= EventModifiers.FunctionKey; break;
case "[esc]": evt.keyCode = KeyCode.Escape; break;
case "return": evt.character = '\n'; evt.keyCode = KeyCode.Return; evt.modifiers &= ~EventModifiers.FunctionKey; break;
case "space": evt.keyCode = KeyCode.Space; evt.character = ' '; evt.modifiers &= ~EventModifiers.FunctionKey; break;
default:
if (subStr.Length != 1)
{
try
{
evt.keyCode = (KeyCode)Enum.Parse(typeof(KeyCode), subStr, true);
}
catch (ArgumentException)
{
Debug.LogError(UnityString.Format("Unable to find key name that matches '{0}'", subStr));
}
}
else
{
evt.character = subStr.ToLower()[0];
evt.keyCode = (KeyCode)evt.character;
if (evt.modifiers != 0)
evt.character = (char)0;
}
break;
}
return evt;
}
// Calculate the hash code
public override int GetHashCode()
{
int hc = 1;
if (isKey)
hc = (ushort)keyCode;
if (isMouse)
hc = mousePosition.GetHashCode();
hc = hc * 37 | (int)modifiers;
return hc;
}
public override bool Equals(object obj)
{
if (obj == null)
return false;
if (ReferenceEquals(this, obj))
return true;
if (obj.GetType() != GetType())
return false;
Event rhs = (Event)obj;
// We are ignoring Caps Lock for modifiers, so that Key Combinations will still work when Caps Lock is down.
if (type != rhs.type || (modifiers & ~EventModifiers.CapsLock) != (rhs.modifiers & ~EventModifiers.CapsLock))
return false;
if (isKey)
return keyCode == rhs.keyCode;
if (isMouse)
return mousePosition == rhs.mousePosition;
return false;
}
public override string ToString()
{
if (isKey)
{
if (character == 0)
return UnityString.Format("Event:{0} Character:\\0 Modifiers:{1} KeyCode:{2}", type, modifiers, keyCode);
return "Event:" + type + " Character:" + (int)(character) + " Modifiers:" + modifiers + " KeyCode:" + keyCode;
}
if (isMouse)
return UnityString.Format("Event: {0} Position: {1} Modifiers: {2}", type, mousePosition, modifiers);
if (type == EventType.ExecuteCommand || type == EventType.ValidateCommand)
return UnityString.Format("Event: {0} \"{1}\"", type, commandName);
return "" + type;
}
// Use this event.
public void Use()
{
if (type == EventType.Repaint || type == EventType.Layout)
Debug.LogWarning(UnityString.Format("Event.Use() should not be called for events of type {0}", type));
Internal_Use();
}
}
}