Faction Test 100.4.0.0
This commit is contained in:
Markus Isberg
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using System;
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using System.Globalization;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using ImeSharp.Native;
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namespace ImeSharp
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{
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public static class InputMethod
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{
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private static IntPtr _windowHandle;
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public static IntPtr WindowHandle { get { return _windowHandle; } }
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private static IntPtr _prevWndProc;
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private static NativeMethods.WndProcDelegate _wndProcDelegate;
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private static TextServicesContext _textServicesContext;
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internal static TextServicesContext TextServicesContext
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{
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get { return _textServicesContext; }
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set { _textServicesContext = value; }
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}
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private static TextStore _defaultTextStore;
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internal static TextStore DefaultTextStore
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{
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get { return _defaultTextStore; }
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set { _defaultTextStore = value; }
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}
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private static Imm32Manager _defaultImm32Manager;
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internal static Imm32Manager DefaultImm32Manager
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{
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get { return _defaultImm32Manager; }
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set { _defaultImm32Manager = value; }
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}
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private static bool _enabled;
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public static bool Enabled
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{
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get { return _enabled; }
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set
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{
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if (_enabled == value) return;
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_enabled = value;
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EnableOrDisableInputMethod(_enabled);
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}
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}
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internal static TsfSharp.Rect TextInputRect;
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/// <summary>
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/// Set the position of the candidate window rendered by the OS.
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/// Let the OS render the candidate window by set param "showOSImeWindow" to <c>true</c> on <see cref="Initialize"/>.
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/// </summary>
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public static void SetTextInputRect(int x, int y, int width, int height)
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{
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if (!_showOSImeWindow) return;
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TextInputRect.Left = x;
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TextInputRect.Top = y;
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TextInputRect.Right = x + width;
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TextInputRect.Bottom = y + height;
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if (Imm32Manager.ImmEnabled)
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Imm32Manager.Current.SetCandidateWindow(TextInputRect);
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}
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private static bool _showOSImeWindow = false;
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/// <summary>
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/// Return if let OS render IME Candidate window or not.
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/// </summary>
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public static bool ShowOSImeWindow { get { return _showOSImeWindow; } }
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internal static int CandidatePageStart;
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internal static int CandidatePageSize;
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internal static int CandidateSelection;
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internal static IMEString[] CandidateList;
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internal static void ClearCandidates()
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{
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CandidateList = null;
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CandidatePageStart = 0;
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CandidatePageSize = 0;
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CandidateSelection = 0;
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}
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public static event EventHandler<IMETextCompositionEventArgs> TextComposition;
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public static event EventHandler<IMETextInputEventArgs> TextInput;
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public static event EventHandler<string> CommitTextComposition;
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public static TextInputCallback TextInputCallback { get; set; }
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public static TextCompositionCallback TextCompositionCallback { get; set; }
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public static CommitTextCompositionCallback CommitTextCompositionCallback { get; set; }
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/// <summary>
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/// Initialize InputMethod with a Window Handle.
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/// Let the OS render the candidate window by set <see paramref="showOSImeWindow"/> to <c>true</c>.
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/// </summary>
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public static void Initialize(IntPtr windowHandle, bool showOSImeWindow = true)
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{
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if (_windowHandle != IntPtr.Zero)
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throw new InvalidOperationException("InputMethod can only be initialized once!");
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_windowHandle = windowHandle;
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_showOSImeWindow = showOSImeWindow;
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_wndProcDelegate = new NativeMethods.WndProcDelegate(WndProc);
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_prevWndProc = (IntPtr)NativeMethods.SetWindowLongPtr(_windowHandle, NativeMethods.GWL_WNDPROC,
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Marshal.GetFunctionPointerForDelegate(_wndProcDelegate));
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}
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internal static void OnTextInput(object sender, char character)
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{
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if (TextInput != null)
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TextInput.Invoke(sender, new IMETextInputEventArgs(character));
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if (TextInputCallback != null)
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TextInputCallback(character);
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}
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// Some Chinese IME only send composition start event but no composition update event.
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// We need this to ensure candidate window position can be set in time.
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internal static void OnTextCompositionStarted(object sender)
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{
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if (TextComposition != null)
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TextComposition.Invoke(sender, new IMETextCompositionEventArgs(IMEString.Empty, 0));
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if (TextCompositionCallback != null)
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TextCompositionCallback(IMEString.Empty, 0, null, 0, 0, 0);
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}
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// On text composition update.
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internal static void OnTextComposition(object sender, IMEString compositionText, int cursorPos)
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{
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if (compositionText.Count == 0) // Crash guard
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cursorPos = 0;
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if (cursorPos > compositionText.Count) // Another crash guard
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cursorPos = compositionText.Count;
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if (TextComposition != null)
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{
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TextComposition.Invoke(sender,
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new IMETextCompositionEventArgs(compositionText, cursorPos, CandidateList, CandidatePageStart, CandidatePageSize, CandidateSelection));
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}
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if (TextCompositionCallback != null)
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TextCompositionCallback(compositionText, cursorPos, CandidateList, CandidatePageStart, CandidatePageSize, CandidateSelection);
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}
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internal static void OnTextCompositionResult(object sender, string compositionResult)
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{
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if (CommitTextComposition != null)
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CommitTextComposition.Invoke(sender, compositionResult);
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if (CommitTextCompositionCallback != null)
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CommitTextCompositionCallback(compositionResult);
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}
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internal static void OnTextCompositionEnded(object sender)
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{
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if (TextComposition != null)
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TextComposition.Invoke(sender, new IMETextCompositionEventArgs(IMEString.Empty, 0));
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if (TextCompositionCallback != null)
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TextCompositionCallback(IMEString.Empty, 0, null, 0, 0, 0);
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}
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private static void EnableOrDisableInputMethod(bool bEnabled)
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{
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// InputMethod enable/disabled status was changed on the current focus Element.
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if (TextServicesLoader.ServicesInstalled)
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{
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if (bEnabled)
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TextServicesContext.Current.SetFocusOnDefaultTextStore();
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else
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TextServicesContext.Current.SetFocusOnEmptyDim();
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}
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// Under IMM32 enabled system, we associate default hIMC or null hIMC.
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if (Imm32Manager.ImmEnabled)
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{
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if (bEnabled)
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Imm32Manager.Current.Enable();
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else
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Imm32Manager.Current.Disable();
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}
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}
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private static IntPtr WndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
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{
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if (Imm32Manager.ImmEnabled)
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{
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if (Imm32Manager.Current.ProcessMessage(hWnd, msg, ref wParam, ref lParam))
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return IntPtr.Zero;
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}
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switch (msg)
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{
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case NativeMethods.WM_DESTROY:
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TextServicesContext.Current.Uninitialize(true);
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break;
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case NativeMethods.WM_CHAR:
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{
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if (InputMethod.Enabled)
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InputMethod.OnTextInput(null, (char)wParam.ToInt32());
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break;
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}
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}
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return NativeMethods.CallWindowProc(_prevWndProc, hWnd, msg, wParam, lParam);
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}
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/// <summary>
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/// Custom windows message pumping to fix frame stuck issue.
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/// Normally, you need call this method in <see cref="Application.Idle" /> handler.
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/// </summary>
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public static void PumpMessage()
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{
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if (!Enabled) return;
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if (!TextServicesLoader.ServicesInstalled) return;
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bool result;
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var msg = new NativeMethods.NativeMessage();
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do
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{
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result = NativeMethods.PeekMessage(out msg, _windowHandle, 0, 0, NativeMethods.PM_REMOVE);
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if (result)
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{
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NativeMethods.TranslateMessage(ref msg);
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NativeMethods.DispatchMessage(ref msg);
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}
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} while (result);
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NativeMethods.PostMessage(_windowHandle, NativeMethods.WM_NULL, IntPtr.Zero, IntPtr.Zero);
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}
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}
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}
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