#region License // // The Open Toolkit Library License // // Copyright (c) 2006 - 2013 Stefanos Apostolopoulos for 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.Collections.Generic; using System.Diagnostics; using System.Drawing; #if ANDROID || IPHONE || MINIMAL using OpenTK.Minimal; #else using System.Drawing.Imaging; #endif using System.Runtime.InteropServices; using OpenTK; using OpenTK.Input; using System.Text; namespace OpenTK.Platform.SDL2 { class Sdl2NativeWindow : INativeWindow, IInputDriver { readonly object sync = new object(); Sdl2WindowInfo window; uint window_id; bool is_visible; bool is_focused; bool is_cursor_visible = true; bool exists; bool must_destroy; bool disposed; volatile bool is_in_closing_event; WindowState window_state = WindowState.Normal; WindowState previous_window_state = WindowState.Normal; WindowBorder window_border = WindowBorder.Resizable; Icon icon; string window_title; // Used in KeyPress event to decode SDL UTF8 text strings // to .Net UTF16 strings char[] DecodeTextBuffer = new char[32]; // Argument for KeyPress event (allocated once to avoid runtime allocations) readonly KeyPressEventArgs keypress_args = new KeyPressEventArgs('\0'); // Argument for KeyDown and KeyUp events (allocated once to avoid runtime allocations) readonly KeyboardKeyEventArgs key_args = new KeyboardKeyEventArgs(); readonly IInputDriver input_driver = new Sdl2InputDriver(); readonly EventFilter EventFilterDelegate_GCUnsafe = FilterEvents; readonly IntPtr EventFilterDelegate; static readonly Dictionary windows = new Dictionary(); static readonly Sdl2KeyMap map = new Sdl2KeyMap(); public Sdl2NativeWindow(int x, int y, int width, int height, string title, GameWindowFlags options, DisplayDevice device) { lock (sync) { var bounds = device.Bounds; var flags = TranslateFlags(options); flags |= WindowFlags.OPENGL; flags |= WindowFlags.RESIZABLE; flags |= WindowFlags.HIDDEN; if (Toolkit.Options.EnableHighResolution) { flags |= WindowFlags.ALLOW_HIGHDPI; } if ((flags & WindowFlags.FULLSCREEN_DESKTOP) != 0 || (flags & WindowFlags.FULLSCREEN) != 0) window_state = WindowState.Fullscreen; IntPtr handle; lock (SDL.Sync) { EventFilterDelegate = Marshal.GetFunctionPointerForDelegate(EventFilterDelegate_GCUnsafe); handle = SDL.CreateWindow(title, bounds.Left + x, bounds.Top + y, width, height, flags); SDL.AddEventWatch(EventFilterDelegate, handle); SDL.PumpEvents(); } window = new Sdl2WindowInfo(handle, null); window_id = SDL.GetWindowID(handle); windows.Add(window_id, this); window_title = title; exists = true; } } #region Private Members static WindowFlags TranslateFlags(GameWindowFlags flags) { switch (flags) { case GameWindowFlags.Fullscreen: if (Sdl2Factory.UseFullscreenDesktop) return WindowFlags.FULLSCREEN_DESKTOP; else return WindowFlags.FULLSCREEN; default: return WindowFlags.Default; } } static Key TranslateKey(Scancode scan) { Key result = Key.Unknown; if (map.ContainsKey(scan)) { result = map[scan]; } return result; } static Key TranslateKey(Keycode key) { Scancode scan = SDL.GetScancodeFromKey(key); return TranslateKey(scan); } unsafe static int FilterEvents(IntPtr user_data, IntPtr e) { bool processed = false; try { Sdl2NativeWindow window = null; Event ev = *(Event*)e; switch (ev.Type) { case EventType.WINDOWEVENT: if (windows.TryGetValue(ev.Window.WindowID, out window)) { ProcessWindowEvent(window, ev.Window); processed = true; } break; case EventType.TEXTINPUT: if (windows.TryGetValue(ev.Text.WindowID, out window)) { ProcessTextInputEvent(window, ev.Text); processed = true; } break; case EventType.KEYDOWN: case EventType.KEYUP: if (windows.TryGetValue(ev.Key.WindowID, out window)) { ProcessKeyEvent(window, ev); processed = true; } break; case EventType.MOUSEBUTTONDOWN: case EventType.MOUSEBUTTONUP: if (windows.TryGetValue(ev.Button.WindowID, out window)) { ProcessButtonEvent(window, ev); processed = true; } break; case EventType.MOUSEMOTION: if (windows.TryGetValue(ev.Motion.WindowID, out window)) { ProcessMotionEvent(window, ev); processed = true; } break; case EventType.MOUSEWHEEL: if (windows.TryGetValue(ev.Wheel.WindowID, out window)) { ProcessWheelEvent(window, ev); processed = true; } break; case EventType.QUIT: Debug.WriteLine("Sdl2 application quit"); break; } } catch (Exception ex) { Debug.Print(ex.ToString()); } return processed ? 0 : 1; } static void ProcessButtonEvent(Sdl2NativeWindow window, Event ev) { bool button_pressed = ev.Button.State == State.Pressed; // We need MouseUp events to be reported even if they occur // outside the window. SetWindowGrab ensures we get them. if (window.CursorVisible) { SDL.SetWindowGrab(window.window.Handle, button_pressed ? true : false); } } static void ProcessKeyEvent(Sdl2NativeWindow window, Event ev) { bool key_pressed = ev.Key.State == State.Pressed; var key = ev.Key.Keysym; window.key_args.Key = TranslateKey(key.Scancode); window.key_args.ScanCode = (uint)key.Scancode; if (key_pressed) { window.KeyDown(window, window.key_args); } else { window.KeyUp(window, window.key_args); } //window.keyboard.SetKey(TranslateKey(key.scancode), (uint)key.scancode, key_pressed); } static unsafe void ProcessTextInputEvent(Sdl2NativeWindow window, TextInputEvent ev) { // Calculate the length of the typed text string int length; for (length = 0; length < TextInputEvent.TextSize && ev.Text[length] != '\0'; length++) ; // Make sure we have enough space to decode this string int decoded_length = Encoding.UTF8.GetCharCount(ev.Text, length); if (window.DecodeTextBuffer.Length < decoded_length) { Array.Resize( ref window.DecodeTextBuffer, 2 * Math.Max(decoded_length, window.DecodeTextBuffer.Length)); } // Decode the string from UTF8 to .Net UTF16 fixed (char* pBuffer = window.DecodeTextBuffer) { decoded_length = System.Text.Encoding.UTF8.GetChars( ev.Text, length, pBuffer, window.DecodeTextBuffer.Length); } for (int i = 0; i < decoded_length; i++) { window.keypress_args.KeyChar = window.DecodeTextBuffer[i]; window.KeyPress(window, window.keypress_args); } } static void ProcessMotionEvent(Sdl2NativeWindow window, Event ev) { float scale = window.ClientSize.Width / (float)window.Size.Width; //window.mouse.Position = new Point( // (int)(ev.motion.x * scale), (int)(ev.motion.y * scale)); } static void ProcessWheelEvent(Sdl2NativeWindow window, Event ev) { //window.mouse.Wheel += ev.wheel.y; } static void ProcessWindowEvent(Sdl2NativeWindow window, WindowEvent e) { switch (e.Event) { case WindowEventID.CLOSE: var close_args = new System.ComponentModel.CancelEventArgs(); try { window.is_in_closing_event = true; window.Closing(window, close_args); } finally { window.is_in_closing_event = false; } if (!close_args.Cancel) { window.Closed(window, EventArgs.Empty); window.must_destroy = true; } break; case WindowEventID.ENTER: window.MouseEnter(window, EventArgs.Empty); break; case WindowEventID.LEAVE: window.MouseLeave(window, EventArgs.Empty); break; case WindowEventID.EXPOSED: // do nothing break; case WindowEventID.FOCUS_GAINED: window.is_focused = true; window.FocusedChanged(window, EventArgs.Empty); break; case WindowEventID.FOCUS_LOST: window.is_focused = false; window.FocusedChanged(window, EventArgs.Empty); break; case WindowEventID.HIDDEN: window.is_visible = false; window.VisibleChanged(window, EventArgs.Empty); break; case WindowEventID.SHOWN: window.is_visible = true; window.VisibleChanged(window, EventArgs.Empty); break; case WindowEventID.MAXIMIZED: window.window_state = WindowState.Maximized; window.WindowStateChanged(window, EventArgs.Empty); break; case WindowEventID.MINIMIZED: window.previous_window_state = window.window_state; window.window_state = WindowState.Minimized; window.WindowStateChanged(window, EventArgs.Empty); break; case WindowEventID.RESTORED: window.window_state = window.previous_window_state; window.WindowStateChanged(window, EventArgs.Empty); break; case WindowEventID.MOVED: window.Move(window, EventArgs.Empty); break; case WindowEventID.RESIZED: case WindowEventID.SIZE_CHANGED: window.Resize(window, EventArgs.Empty); break; default: Debug.Print("SDL2 unhandled event: {0}", e.Type); break; } } void DestroyWindow() { exists = false; if (window.Handle != IntPtr.Zero) { CursorVisible = true; lock (SDL.Sync) { SDL.DelEventWatch(EventFilterDelegate, window.Handle); if (windows.ContainsKey(window_id)) { windows.Remove(window_id); } SDL.DestroyWindow(window.Handle); } } window_id = 0; window.Handle = IntPtr.Zero; } void GrabCursor(bool grab) { SDL.ShowCursor(!grab); SDL.SetWindowGrab(window.Handle, grab); SDL.SetRelativeMouseMode(grab); } // Hack to force WindowState events to be pumped void HideShowWindowHack() { SDL.HideWindow(window.Handle); ProcessEvents(); SDL.ShowWindow(window.Handle); ProcessEvents(); } // Revert to WindowState.Normal if necessary void RestoreWindow() { WindowState state = WindowState; switch (state) { case WindowState.Fullscreen: SDL.SetWindowFullscreen(window.Handle, 0); break; case WindowState.Maximized: SDL.RestoreWindow(window.Handle); HideShowWindowHack(); break; case WindowState.Minimized: SDL.RestoreWindow(window.Handle); break; } ProcessEvents(); window_state = WindowState.Normal; } #endregion #region INativeWindow Members public event EventHandler Move = delegate { }; public event EventHandler Resize = delegate { }; public event EventHandler Closing = delegate { }; public event EventHandler Closed = delegate { }; public event EventHandler Disposed = delegate { }; public event EventHandler IconChanged = delegate { }; public event EventHandler TitleChanged = delegate { }; public event EventHandler VisibleChanged = delegate { }; public event EventHandler FocusedChanged = delegate { }; public event EventHandler WindowBorderChanged = delegate { }; public event EventHandler WindowStateChanged = delegate { }; public event EventHandler KeyDown = delegate { }; public event EventHandler KeyPress = delegate { }; public event EventHandler KeyUp = delegate { }; public event EventHandler MouseEnter = delegate { }; public event EventHandler MouseLeave = delegate { }; public void Close() { lock (sync) { if (Exists && !must_destroy && !is_in_closing_event) { Debug.Print("SDL2 closing window {0}", window.Handle); Event e = new Event(); e.Type = EventType.WINDOWEVENT; e.Window.Event = WindowEventID.CLOSE; e.Window.WindowID = window_id; lock (SDL.Sync) { SDL.PushEvent(ref e); } } } } public void ProcessEvents() { lock (sync) { if (Exists) { SDL.PumpEvents(); if (must_destroy) { DestroyWindow(); } } } } public Point PointToClient(Point point) { var origin = DisplayDevice.Default.Bounds.Location; var client = Location; return new Point(point.X + client.X - origin.X, point.Y + client.Y - origin.Y); } public Point PointToScreen(Point point) { var origin = DisplayDevice.Default.Bounds.Location; var client = Location; return new Point(point.X + origin.X - client.X, point.Y + origin.Y - client.Y); } public Icon Icon { get { return icon; } set { lock (sync) { if (Exists) { // Set the new icon, if any, or clear the current // icon if null if (value != null) { using (Bitmap bmp = value.ToBitmap()) { // Decode the icon into a SDL surface var data = bmp.LockBits( new Rectangle(0, 0, value.Width, value.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb); IntPtr surface = SDL.CreateRGBSurfaceFrom( data.Scan0, data.Width, data.Height, 32, data.Stride, 0x00ff0000u, 0x0000ff00u, 0x000000ffu, 0xff000000u); // Update the window icon SDL.SetWindowIcon(window.Handle, surface); // Free the SDL surface as it is no longer needed SDL.FreeSurface(surface); bmp.UnlockBits(data); } } else { // Clear the window icon SDL.SetWindowIcon(window.Handle, IntPtr.Zero); } icon = value; IconChanged(this, EventArgs.Empty); } } } } public string Title { get { lock (sync) { if (Exists) { return SDL.GetWindowTitle(window.Handle); } return String.Empty; } } set { lock (sync) { if (Exists) { SDL.SetWindowTitle(window.Handle, value); window_title = value; } } } } public bool Focused { get { return is_focused; } } public bool Visible { get { return is_visible; } set { lock (sync) { if (Exists) { if (value) SDL.ShowWindow(window.Handle); else SDL.HideWindow(window.Handle); } } } } public bool Exists { get { return exists; } } public IWindowInfo WindowInfo { get { return window; } } public WindowState WindowState { get { return window_state; } set { lock (sync) { if (Exists) { if (WindowState != value) { // Set the new WindowState switch (value) { case WindowState.Fullscreen: RestoreWindow(); bool success = Sdl2Factory.UseFullscreenDesktop ? SDL.SetWindowFullscreen(window.Handle, (uint)WindowFlags.FULLSCREEN_DESKTOP) < 0 : SDL.SetWindowFullscreen(window.Handle, (uint)WindowFlags.FULLSCREEN) < 0; if (!success) { Debug.Print("SDL2 failed to enter fullscreen mode: {0}", SDL.GetError()); } SDL.RaiseWindow(window.Handle); // There is no "fullscreen" message in the event loop // so we have to mark that ourselves window_state = WindowState.Fullscreen; break; case WindowState.Maximized: RestoreWindow(); SDL.MaximizeWindow(window.Handle); window_state = WindowState.Maximized; break; case WindowState.Minimized: SDL.MinimizeWindow(window.Handle); window_state = WindowState.Minimized; break; case WindowState.Normal: RestoreWindow(); break; } if (!CursorVisible) GrabCursor(true); } } } } } public WindowBorder WindowBorder { get { return window_border; } set { if (WindowBorder != value) { lock (sync) { if (Exists) { switch (value) { case WindowBorder.Resizable: SDL.SetWindowBordered(window.Handle, true); window_border = WindowBorder.Resizable; break; case WindowBorder.Hidden: SDL.SetWindowBordered(window.Handle, false); window_border = WindowBorder.Hidden; break; case WindowBorder.Fixed: Debug.WriteLine("SDL2 cannot change to fixed-size windows at runtime."); break; } } } if (Exists) { WindowBorderChanged(this, EventArgs.Empty); } } } } public Rectangle Bounds { get { return new Rectangle(Location, Size); } set { Size = value.Size; Location = value.Location; } } public Point Location { get { lock (sync) { if (Exists) { int x, y; SDL.GetWindowPosition(window.Handle, out x, out y); return new Point(x, y); } return new Point(); } } set { lock (sync) { if (Exists) { SDL.SetWindowPosition(window.Handle, value.X, value.Y); } } } } public Size Size { get { lock (sync) { if (Exists) { int w, h; SDL.GetWindowSize(window.Handle, out w, out h); return new Size(w, h); } return new Size(); } } set { lock (sync) { if (Exists) { SDL.SetWindowSize(window.Handle, value.Width, value.Height); } } } } public int X { get { return Location.X; } set { Location = new Point(value, Y); } } public int Y { get { return Location.Y; } set { Location = new Point(X, value); } } public int Width { get { return ClientSize.Width; } set { ClientSize = new Size(value, Height); } } public int Height { get { return ClientSize.Height; } set { ClientSize = new Size(Width, value); } } public Rectangle ClientRectangle { get { return new Rectangle(new Point(), ClientSize); } set { ClientSize = value.Size; } } public Size ClientSize { get { int w, h; if (SDL.Version.Number > 2000) { // SDL > 2.0.0 supports SDL_GL_GetDrawableSize for // hidpi windows. SDL.GL.GetDrawableSize(window.Handle, out w, out h); } else { SDL.GetWindowSize(window.Handle, out w, out h); } return new Size(w, h); } set { float scale = Size.Width / (float)ClientSize.Width; Size = new Size((int)(value.Width * scale), (int)(value.Height * scale)); } } public IInputDriver InputDriver { get { return input_driver; } } public bool CursorVisible { get { return is_cursor_visible; } set { lock (sync) { if (Exists) { GrabCursor(!value); is_cursor_visible = value; } } } } #endregion #region IInputDriver Members public void Poll() { InputDriver.Poll(); } #endregion #region IJoystickDriver Members public IList Joysticks { get { return InputDriver.Joysticks; } } #endregion #region IMouseDriver Members public IList Mouse { get { return InputDriver.Mouse; } } #endregion #region IKeyboardDriver Members public IList Keyboard { get { return InputDriver.Keyboard; } } #endregion #region IDisposable implementation void Dispose(bool manual) { if (!disposed) { lock (sync) { if (manual) { Debug.Print("Disposing {0}", GetType()); InputDriver.Dispose(); if (Exists) { DestroyWindow(); } } else { Debug.WriteLine("Sdl2NativeWindow leaked, did you forget to call Dispose()?"); if (Exists) { // If the main loop is still running, send a close message. // This will raise the Closing/Closed events and then destroy // the window. // Todo: it is probably not safe to raise events once the // finalizer has run. Review this. Close(); } } disposed = true; } } } public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } ~Sdl2NativeWindow() { Dispose(true); } #endregion } }