Source/OpenTK/NativeWindow.cs

#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2009 the Open Toolkit library.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to 
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion

using System;
using System.ComponentModel;
using System.Drawing;
using OpenTK.Graphics;
using OpenTK.Input;
using OpenTK.Platform;

namespace OpenTK
{

    public class NativeWindow : INativeWindow
    {
        #region --- Fields ---

        private readonly GameWindowFlags options;

        private readonly DisplayDevice device;

        private readonly INativeWindow implementation;

        private bool disposed, events;

        #endregion

        #region --- Contructors ---

        public NativeWindow()
            : this(640, 480, "OpenTK Native Window", GameWindowFlags.Default, GraphicsMode.Default, DisplayDevice.Default) { }

        // TODO: Remaining constructors.

        public NativeWindow(int width, int height, string title, GameWindowFlags options, GraphicsMode mode, DisplayDevice device)
            : this(device.Bounds.Left + (device.Bounds.Width - width) / 2,
                   device.Bounds.Top + (device.Bounds.Height - height) / 2,
                   width, height, title, options, mode, device) { }

        public NativeWindow(int x, int y, int width, int height, string title, GameWindowFlags options, GraphicsMode mode, DisplayDevice device)
        {
            // TODO: Should a constraint be added for the position?
            if (width < 1)
                throw new ArgumentOutOfRangeException("width", "Must be greater than zero.");
            if (height < 1)
                throw new ArgumentOutOfRangeException("height", "Must be greater than zero.");
            if (mode == null)
                throw new ArgumentNullException("mode");
            if (device == null)
                throw new ArgumentNullException("device");

            this.options = options;
            this.device = device;

            implementation = Factory.Default.CreateNativeWindow(x, y, width, height, title, mode, options, this.device);

            if ((options & GameWindowFlags.Fullscreen) != 0)
            {
                this.device.ChangeResolution(width, height, mode.ColorFormat.BitsPerPixel, 0);
                WindowState = WindowState.Fullscreen;
            }
        }

        #endregion

        #region --- INativeWindow Members ---

        #region Methods

        #region Close

        public void Close()
        {
            EnsureUndisposed();
            implementation.Close();
        }

        #endregion

        #region PointToClient

        public Point PointToClient(Point point)
        {
            return implementation.PointToClient(point);
        }

        #endregion

        #region PointToScreen

        public Point PointToScreen(Point point)
        {
            // Here we use the fact that PointToClient just translates the point, and PointToScreen
            // should perform the inverse operation.
            Point trans = PointToClient(Point.Empty);
            point.X -= trans.X;
            point.Y -= trans.Y;
            return point;
        }

        #endregion

        #region ProcessEvents

        public void ProcessEvents()
        {
            ProcessEvents(false);
        }

        #endregion

        #endregion

        #region Properties

        #region Bounds

        public Rectangle Bounds
        {
            get
            {
                EnsureUndisposed();
                return implementation.Bounds;
            }
            set
            {
                EnsureUndisposed();
                implementation.Bounds = value;
            }
        }

        #endregion

        #region ClientRectangle

        public Rectangle ClientRectangle
        {
            get
            {
                EnsureUndisposed();
                return implementation.ClientRectangle;
            }
            set
            {
                EnsureUndisposed();
                implementation.ClientRectangle = value;
            }
        }

        #endregion

        #region ClientSize

        public Size ClientSize
        {
            get
            {
                EnsureUndisposed();
                return implementation.ClientSize;
            }
            set
            {
                EnsureUndisposed();
                implementation.ClientSize = value;
            }
        }

        #endregion

        #region Exists

        public bool Exists
        {
            get
            {
                return IsDisposed ? false : implementation.Exists; // TODO: Should disposed be ignored instead?
            }
        }

        #endregion

        #region Focused

        public bool Focused
        {
            get
            {
                EnsureUndisposed();
                return implementation.Focused;
            }
        }

        #endregion

        #region Height

        public int Height
        {
            get
            {
                EnsureUndisposed();
                return implementation.Height;
            }
            set
            {
                EnsureUndisposed();
                implementation.Height = value;
            }
        }

        #endregion

        #region Icon

        public Icon Icon
        {
            get
            {
                EnsureUndisposed();
                return implementation.Icon;
            }
            set
            {
                EnsureUndisposed();
                implementation.Icon = value;
            }
        }

        #endregion

        #region InputDriver

        [Obsolete]
        public IInputDriver InputDriver
        {
            get
            {
                EnsureUndisposed();
                return implementation.InputDriver;
            }
        }

        #endregion

        #region Location

        public Point Location
        {
            get
            {
                EnsureUndisposed();
                return implementation.Location;
            }
            set
            {
                EnsureUndisposed();
                implementation.Location = value;
            }
        }

        #endregion

        #region Size

        public Size Size
        {
            get
            {
                EnsureUndisposed();
                return implementation.Size;
            }
            set
            {
                EnsureUndisposed();
                implementation.Size = value;
            }
        }

        #endregion

        #region Title

        public string Title
        {
            get
            {
                EnsureUndisposed();
                return implementation.Title;
            }
            set
            {
                EnsureUndisposed();
                implementation.Title = value;
            }
        }

        #endregion

        #region Visible

        public bool Visible
        {
            get
            {
                EnsureUndisposed();
                return implementation.Visible;
            }
            set
            {
                EnsureUndisposed();
                implementation.Visible = value;
            }
        }

        #endregion

        #region Width

        public int Width
        {
            get
            {
                EnsureUndisposed();
                return implementation.Width;
            }
            set
            {
                EnsureUndisposed();
                implementation.Width = value;
            }
        }

        #endregion

        #region WindowBorder

        public WindowBorder WindowBorder
        {
            get
            {
                return implementation.WindowBorder;
            }
            set
            {
                implementation.WindowBorder = value;
            }
        }

        #endregion

        #region WindowInfo

        public IWindowInfo WindowInfo
        {
            get
            {
                EnsureUndisposed();
                return implementation.WindowInfo;
            }
        }

        #endregion

        #region WindowState

        public virtual WindowState WindowState
        {
            get
            {
                return implementation.WindowState;
            }
            set
            {
                implementation.WindowState = value;
            }
        }

        #endregion

        #region X

        public int X
        {
            get
            {
                EnsureUndisposed();
                return implementation.X;
            }
            set
            {
                EnsureUndisposed();
                implementation.X = value;
            }
        }

        #endregion

        #region Y

        public int Y
        {
            get
            {
                EnsureUndisposed();
                return implementation.Y;
            }
            set
            {
                EnsureUndisposed();
                implementation.Y = value;
            }
        }

        #endregion

        #endregion

        #region Events

        public event EventHandler<EventArgs> Closed;

        public event EventHandler<CancelEventArgs> Closing;

        public event EventHandler<EventArgs> Disposed;

        public event EventHandler<EventArgs> FocusedChanged;

        public event EventHandler<EventArgs> IconChanged;

        public event EventHandler<KeyPressEventArgs> KeyPress;

        public event EventHandler<EventArgs> Move;

        public event EventHandler<EventArgs> MouseEnter;
        
        public event EventHandler<EventArgs> MouseLeave;

        public event EventHandler<EventArgs> Resize;

        public event EventHandler<EventArgs> TitleChanged;

        public event EventHandler<EventArgs> VisibleChanged;

        public event EventHandler<EventArgs> WindowBorderChanged;

        public event EventHandler<EventArgs> WindowStateChanged;

        #endregion

        #endregion

        #region --- IDisposable Members ---

        #region Dispose

        public virtual void Dispose()
        {
            if (!IsDisposed)
            {
                if ((options & GameWindowFlags.Fullscreen) != 0)
                {
                    //if (WindowState == WindowState.Fullscreen) WindowState = WindowState.Normal; // TODO: Revise.
                    device.RestoreResolution();
                }
                implementation.Dispose();
                GC.SuppressFinalize(this);

                IsDisposed = true;
            }
        }

        #endregion

        #endregion

        #region --- Protected Members ---

        #region Methods

        #region EnsureUndisposed

        protected void EnsureUndisposed()
        {
            if (IsDisposed) throw new ObjectDisposedException(GetType().Name);
        }

        #endregion

        #region IsDisposed

        protected bool IsDisposed
        {
            get { return disposed; }
            set { disposed = value; }
        }

        #endregion

        #region OnClosed

        protected virtual void OnClosed(EventArgs e)
        {
            if (Closed != null) Closed(this, e);
        }

        #endregion

        #region OnClosing

        protected virtual void OnClosing(CancelEventArgs e)
        {
            if (Closing != null) Closing(this, e);
        }

        #endregion

        #region OnDisposed

        protected virtual void OnDisposed(EventArgs e)
        {
            if (Disposed != null) Disposed(this, e);
        }

        #endregion

        #region OnFocusedChanged

        protected virtual void OnFocusedChanged(EventArgs e)
        {
            if (FocusedChanged != null) FocusedChanged(this, e);
        }

        #endregion

        #region OnIconChanged

        protected virtual void OnIconChanged(EventArgs e)
        {
            if (IconChanged != null) IconChanged(this, e);
        }

        #endregion

        #region OnKeyPress

        protected virtual void OnKeyPress(KeyPressEventArgs e)
        {
            if (KeyPress != null) KeyPress(this, e);
        }

        #endregion

        #region OnMove

        protected virtual void OnMove(EventArgs e)
        {
            if (Move != null) Move(this, e);
        }

        #endregion

        #region OnMouseEnter

        protected virtual void OnMouseEnter(EventArgs e)
        {
            if (MouseEnter != null) MouseEnter(this, e);
        }

        #endregion

        #region OnMouseLeave

        protected virtual void OnMouseLeave(EventArgs e)
        {
            if (MouseLeave != null) MouseLeave(this, e);
        }

        #endregion

        #region OnResize

        protected virtual void OnResize(EventArgs e)
        {
            if (Resize != null) Resize(this, e);
        }

        #endregion

        #region OnTitleChanged

        protected virtual void OnTitleChanged(EventArgs e)
        {
            if (TitleChanged != null) TitleChanged(this, e);
        }

        #endregion

        #region OnVisibleChanged

        protected virtual void OnVisibleChanged(EventArgs e)
        {
            if (VisibleChanged != null) VisibleChanged(this, e);
        }

        #endregion

        #region OnWindowBorderChanged

        protected virtual void OnWindowBorderChanged(EventArgs e)
        {
            if (WindowBorderChanged != null) WindowBorderChanged(this, e);
        }

        #endregion

        #region OnWindowStateChanged

        protected virtual void OnWindowStateChanged(EventArgs e)
        {
            if (WindowStateChanged != null) WindowStateChanged(this, e);
        }

        #endregion

        #region ProcessEvents

        protected void ProcessEvents(bool retainEvents)
        {
            EnsureUndisposed();
            if (!retainEvents && !events) Events = true;
            implementation.ProcessEvents();
        }

        #endregion

        #endregion

        #endregion

        #region --- Private Members ---

        #region Methods

        #region OnClosedInternal

        private void OnClosedInternal(object sender, EventArgs e)
        {
            OnClosed(e);
            Events = false;
        }

        #endregion

        #region OnClosingInternal

        private void OnClosingInternal(object sender, CancelEventArgs e) { OnClosing(e); }

        #endregion

        #region OnDisposedInternal

        private void OnDisposedInternal(object sender, EventArgs e) { OnDisposed(e); }

        #endregion

        #region OnFocusedChangedInternal

        private void OnFocusedChangedInternal(object sender, EventArgs e) { OnFocusedChanged(e); }

        #endregion

        #region OnIconChangedInternal

        private void OnIconChangedInternal(object sender, EventArgs e) { OnIconChanged(e); }

        #endregion

        #region OnKeyPressInternal

        private void OnKeyPressInternal(object sender, KeyPressEventArgs e) { OnKeyPress(e); }

        #endregion

        #region OnMouseEnterInternal

        private void OnMouseEnterInternal(object sender, EventArgs e) { OnMouseEnter(e); }

        #endregion

        #region OnMouseLeaveInternal

        private void OnMouseLeaveInternal(object sender, EventArgs e) { OnMouseLeave(e); }

        #endregion

        #region OnMoveInternal

        private void OnMoveInternal(object sender, EventArgs e) { OnMove(e); }

        #endregion

        #region OnResizeInternal

        private void OnResizeInternal(object sender, EventArgs e) { OnResize(e); }

        #endregion

        #region OnTitleChangedInternal

        private void OnTitleChangedInternal(object sender, EventArgs e) { OnTitleChanged(e); }

        #endregion

        #region OnVisibleChangedInternal

        private void OnVisibleChangedInternal(object sender, EventArgs e) { OnVisibleChanged(e); }

        #endregion

        #region OnWindowBorderChangedInternal

        private void OnWindowBorderChangedInternal(object sender, EventArgs e) { OnWindowBorderChanged(e); }

        #endregion

        #region OnWindowStateChangedInternal

        private void OnWindowStateChangedInternal(object sender, EventArgs e) { OnWindowStateChanged(e); }

        #endregion

        #endregion

        #region Properties

        #region Events

        private bool Events
        {
            set
            {
                if (value)
                {
                    if (events)
                    {
                        throw new InvalidOperationException("Event propagation is already enabled.");
                    }
                    implementation.Closed += OnClosedInternal;
                    implementation.Closing += OnClosingInternal;
                    implementation.Disposed += OnDisposedInternal;
                    implementation.FocusedChanged += OnFocusedChangedInternal;
                    implementation.IconChanged += OnIconChangedInternal;
                    implementation.KeyPress += OnKeyPressInternal;
                    implementation.MouseEnter += OnMouseEnterInternal;
                    implementation.MouseLeave += OnMouseLeaveInternal;
                    implementation.Move += OnMoveInternal;
                    implementation.Resize += OnResizeInternal;
                    implementation.TitleChanged += OnTitleChangedInternal;
                    implementation.VisibleChanged += OnVisibleChangedInternal;
                    implementation.WindowBorderChanged += OnWindowBorderChangedInternal;
                    implementation.WindowStateChanged += OnWindowStateChangedInternal;
                    events = true;
                }
                else if (events)
                {
                    implementation.Closed -= OnClosedInternal;
                    implementation.Closing -= OnClosingInternal;
                    implementation.Disposed -= OnDisposedInternal;
                    implementation.FocusedChanged -= OnFocusedChangedInternal;
                    implementation.IconChanged -= OnIconChangedInternal;
                    implementation.KeyPress -= OnKeyPressInternal;
                    implementation.MouseEnter -= OnMouseEnterInternal;
                    implementation.MouseLeave -= OnMouseLeaveInternal;
                    implementation.Move -= OnMoveInternal;
                    implementation.Resize -= OnResizeInternal;
                    implementation.TitleChanged -= OnTitleChangedInternal;
                    implementation.VisibleChanged -= OnVisibleChangedInternal;
                    implementation.WindowBorderChanged -= OnWindowBorderChangedInternal;
                    implementation.WindowStateChanged -= OnWindowStateChangedInternal;
                    events = false;
                }
                else
                {
                    throw new InvalidOperationException("Event propagation is already disabled.");
                }
            }
        }

        #endregion

        #endregion

        #endregion
    }

}

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