523 lines
15 KiB
C#
523 lines
15 KiB
C#
#define COMPAT_REV1519 // Keeps compatibility with revision 1519
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#region --- License ---
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/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
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* See license.txt for license info
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Drawing;
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using System.ComponentModel;
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namespace OpenTK.Input
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{
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/// <summary>
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/// Represents a mouse device and provides methods to query its status.
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/// </summary>
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public sealed class MouseDevice : IInputDevice
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{
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#region --- Fields ---
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string description;
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IntPtr id;
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int numButtons, numWheels;
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readonly bool[] button_state = new bool[Enum.GetValues(typeof(MouseButton)).Length];
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int wheel, last_wheel;
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Point pos = new Point(), last_pos = new Point();
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#if COMPAT_REV1519
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int wheel_last_accessed = 0;
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Point pos_last_accessed = new Point();
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#endif
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#endregion
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#region --- IInputDevice Members ---
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#region public string Description
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/// <summary>
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/// Gets a string describing this MouseDevice.
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/// </summary>
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public string Description
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{
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get { return description; }
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internal set { description = value; }
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}
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#endregion
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#region public InputDeviceType DeviceType
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/// <summary>
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/// Gets a value indicating the InputDeviceType of this InputDevice.
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/// </summary>
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public InputDeviceType DeviceType
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{
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get { return InputDeviceType.Mouse; }
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}
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#endregion
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#endregion
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#region --- Public Members ---
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#region public int NumberOfButtons
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/// <summary>
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/// Gets an integer representing the number of buttons on this MouseDevice.
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/// </summary>
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public int NumberOfButtons
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{
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get { return numButtons; }
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internal set { numButtons = value; }
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}
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#endregion
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#region public int NumberOfWheels
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/// <summary>
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/// Gets an integer representing the number of wheels on this MouseDevice.
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/// </summary>
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public int NumberOfWheels
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{
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get { return numWheels; }
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internal set { numWheels = value; }
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}
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#endregion
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#region public IntPtr DeviceID
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/// <summary>
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/// Gets an IntPtr representing a device dependent ID.
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/// </summary>
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public IntPtr DeviceID
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{
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get { return id; }
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internal set { id = value; }
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}
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#endregion
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#region public int Wheel
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/// <summary>
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/// Gets an integer representing the absolute wheel position.
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/// </summary>
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public int Wheel
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{
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get { return wheel; }
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internal set
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{
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wheel = value;
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if (WheelChanged != null)
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WheelChanged(
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this,
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new MouseWheelEventArgs(
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pos.X,
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pos.Y,
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wheel,
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wheel - last_wheel
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)
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);
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last_wheel = wheel;
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}
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}
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#endregion
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#region public int X
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/// <summary>
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/// Gets an integer representing the absolute x position of the pointer, in window pixel coordinates.
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/// </summary>
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public int X
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{
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get { return pos.X; }
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}
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#endregion
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#region public int Y
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/// <summary>
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/// Gets an integer representing the absolute y position of the pointer, in window pixel coordinates.
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/// </summary>
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public int Y
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{
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get { return pos.Y; }
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}
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#endregion
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#region public bool this[MouseButton b]
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/// <summary>
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/// Gets a System.Boolean indicating the state of the specified MouseButton.
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/// </summary>
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/// <param name="key">The MouseButton to check.</param>
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/// <returns>True if the MouseButton is pressed, false otherwise.</returns>
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public bool this[MouseButton button]
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{
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get
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{
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return button_state[(int)button];
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}
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internal set
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{
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bool previous_state = button_state[(int)button];
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button_state[(int)button] = value;
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MouseButtonEventArgs e = new MouseButtonEventArgs(pos.X, pos.Y, button, value);
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if (value && !previous_state)
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ButtonDown(this, e);
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else if (!value && previous_state)
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ButtonUp(this, e);
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}
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}
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#endregion
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#endregion
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#region --- Internal Members ---
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#region internal Point Position
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/// <summary>
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/// Sets a System.Drawing.Point representing the absolute position of the pointer, in window pixel coordinates.
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/// </summary>
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internal Point Position
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{
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set
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{
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pos = value;
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last_pos = pos;
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Move(this, new MouseMoveEventArgs(pos.X, pos.Y, pos.X - last_pos.X, pos.Y - last_pos.Y));
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}
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}
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#endregion
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#endregion
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#region --- Events ---
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/// <summary>
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/// Occurs when the mouse's position is moved.
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/// </summary>
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public event MouseMoveEventHandler Move = delegate(object sender, MouseMoveEventArgs e) { };
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/// <summary>
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/// Occurs when a button is pressed.
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/// </summary>
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public event MouseButtonEventHandler ButtonDown = delegate(object sender, MouseButtonEventArgs e) { };
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/// <summary>
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/// Occurs when a button is released.
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/// </summary>
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public event MouseButtonEventHandler ButtonUp = delegate(object sender, MouseButtonEventArgs e) { };
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/// <summary>
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/// Occurs when one of the mouse wheels is moved.
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/// </summary>
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public event MouseWheelEventHandler WheelChanged = delegate(object sender, MouseWheelEventArgs e) { };
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#region --- Overrides ---
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public override int GetHashCode()
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{
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//return base.GetHashCode();
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return (int)(numButtons ^ numWheels ^ id.GetHashCode() ^ description.GetHashCode());
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}
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public override string ToString()
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{
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return String.Format("ID: {0} ({1}). Buttons: {2}, Wheels: {3}",
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DeviceID, Description, NumberOfButtons, NumberOfWheels);
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}
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#endregion
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#endregion
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#region COMPAT_REV1519
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#if COMPAT_REV1519
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#region public int WheelDelta
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/// <summary>
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/// Gets an integer representing the relative wheel movement.
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/// </summary>
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[Obsolete("WheelDelta is only defined for a single WheelChanged event. Use the OpenTK.Input.MouseWheelEventArgs::Delta property with the OpenTK.Input.MouseDevice::WheelChanged event.", false)]
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public int WheelDelta
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{
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get
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{
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int result = wheel - wheel_last_accessed;
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wheel_last_accessed = wheel;
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return result;
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}
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}
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#endregion
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#region public int XDelta
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/// <summary>
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/// Gets an integer representing the relative x movement of the pointer, in pixel coordinates.
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/// </summary>
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[Obsolete("XDelta is only defined for a single Move event. Use the OpenTK.Input.MouseMoveEventArgs::Delta property with the OpenTK.Input.MouseDevice::Move event.", false)]
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public int XDelta
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{
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get
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{
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int result = pos.X - pos_last_accessed.X;
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pos_last_accessed.X = pos.X;
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return result;
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}
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}
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#endregion
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#region public int YDelta
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/// <summary>
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/// Gets an integer representing the relative y movement of the pointer, in pixel coordinates.
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/// </summary>
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[Obsolete("YDelta is only defined for a single Move event. Use the OpenTK.Input.MouseMoveEventArgs::Delta property with the OpenTK.Input.MouseDevice::Move event.", false)]
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public int YDelta
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{
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get
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{
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int result = pos.Y - pos_last_accessed.Y;
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pos_last_accessed.Y = pos.Y;
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return result;
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}
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}
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#endregion
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#endif
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#endregion
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}
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#region Event Arguments
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public struct MouseMoveEventArgs
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{
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#region Fields
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int x, y;
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int x_delta, y_delta;
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#endregion
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#region Constructors
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/// <summary>
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/// Initializes a new instance of the <see cref="MouseMoveEventArgs"/> class.
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/// </summary>
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/// <param name="x">The X position.</param>
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/// <param name="y">The Y position.</param>
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/// <param name="xDelta">The change in X position produced by this event.</param>
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/// <param name="yDelta">The change in Y position produced by this event.</param>
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public MouseMoveEventArgs(int x, int y, int xDelta, int yDelta)
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{
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this.x = x;
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this.y = y;
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this.x_delta = xDelta;
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this.y_delta = yDelta;
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}
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#endregion
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#region Public Members
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/// <summary>
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/// Gets the X position of the mouse for the event.
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/// </summary>
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public int X { get { return x; } }
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/// <summary>
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/// Gets the Y position of the mouse for the event.
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/// </summary>
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public int Y { get { return y; } }
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/// <summary>
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/// Gets a System.Drawing.Points representing the location of the mouse for the event.
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/// </summary>
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public Point Position { get { return new Point(x, y); } }
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/// <summary>
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/// Gets the change in X position produced by this event.
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/// </summary>
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public int XDelta { get { return x_delta; } }
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/// <summary>
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/// Gets the change in Y position produced by this event.
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/// </summary>
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public int YDelta { get { return y_delta; } }
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#endregion
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}
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/// <summary>
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/// Provides data for the <see cref="MouseDevice.ButtonDown"/> and <see cref="MouseDevice.ButtonUp"/> events.
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/// </summary>
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public struct MouseButtonEventArgs
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{
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#region Fields
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MouseButton button;
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bool pressed;
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int x, y;
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#endregion
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#region Constructors
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/// <summary>
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/// Initializes a new instance of the <see cref="MouseButtonEventArgs"/> class.
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/// </summary>
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/// <param name="x">The X position.</param>
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/// <param name="y">The Y position.</param>
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/// <param name="button">The mouse button for the event.</param>
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/// <param name="pressed">The current state of the button.</param>
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internal MouseButtonEventArgs(int x, int y, MouseButton button, bool pressed)
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{
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this.x = x;
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this.y = y;
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this.button = button;
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this.pressed = pressed;
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}
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#endregion
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#region Public Members
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/// <summary>
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/// Gets the X position of the mouse for the event.
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/// </summary>
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public int X { get { return x; } }
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/// <summary>
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/// Gets the Y position of the mouse for the event.
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/// </summary>
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public int Y { get { return y; } }
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/// <summary>
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/// Gets a System.Drawing.Points representing the location of the mouse for the event.
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/// </summary>
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public Point Position { get { return new Point(x, y); } }
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/// <summary>
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/// The mouse button for the event.
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/// </summary>
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public MouseButton Button { get { return this.button; } }
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/// <summary>
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/// Gets a System.Boolean representing the state of the mouse button for the event.
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/// </summary>
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public bool IsPressed { get { return pressed; } }
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#endregion
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}
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/// <summary>
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/// Provides data for the <see cref="MouseDevice.WheelChanged"/> event.
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/// </summary>
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public struct MouseWheelEventArgs
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{
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#region Fields
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int value;
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int delta;
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int x, y;
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#endregion
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#region Constructors
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/// <summary>
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/// Initializes a new instance of the <see cref="MouseWheelEventArgs"/> class.
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/// </summary>
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/// <param name="x">The X position.</param>
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/// <param name="y">The Y position.</param>
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/// <param name="value">The value of the wheel.</param>
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/// <param name="delta">The change in value of the wheel for this event.</param>
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public MouseWheelEventArgs(int x, int y, int value, int delta)
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{
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this.x = x;
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this.y = y;
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this.value = value;
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this.delta = delta;
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}
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#endregion
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#region Public Members
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/// <summary>
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/// Gets the X position of the mouse for the event.
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/// </summary>
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public int X { get { return x; } }
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/// <summary>
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/// Gets the Y position of the mouse for the event.
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/// </summary>
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public int Y { get { return y; } }
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/// <summary>
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/// Gets a System.Drawing.Points representing the location of the mouse for the event.
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/// </summary>
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public Point Position { get { return new Point(x, y); } }
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/// <summary>
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/// The value of the wheel.
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/// </summary>
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public int Value { get { return value; } }
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/// <summary>
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/// The change in value of the wheel for this event.
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/// </summary>
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public int Delta { get { return delta; } }
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#endregion
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}
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#endregion
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#region Event Handlers
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/// <summary>
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/// Defines a <see cref="MouseDevice.Move"/> event.
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/// </summary>
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/// <param name="sender">The MouseDevice that generated this event.</param>
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/// <param name="e">A <see cref="MouseMoveEventArgs"/> that contains the event data.</param>
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public delegate void MouseMoveEventHandler(object sender, MouseMoveEventArgs e);
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/// <summary>
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/// Defines a <see cref="MouseDevice.WheelChanged"/> event.
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/// </summary>
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/// <param name="sender">The MouseDevice that generated this event.</param>
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/// <param name="e">A <see>MouseWheelEventArgs</see> that contains the event data.</param>
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public delegate void MouseWheelEventHandler(object sender, MouseWheelEventArgs e);
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/// <summary>
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/// Defines the <see cref="MouseDevice.ButtonDown"/> and <see cref="MouseDevice.ButtonUp"/> events.
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/// </summary>
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/// <param name="sender">The MouseDevice that generated this event.</param>
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/// <param name="e">A <see cref="MouseButtonEventArgs"/> that contains the event data.</param>
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public delegate void MouseButtonEventHandler(object sender, MouseButtonEventArgs e);
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#endregion
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}
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