57 lines
1.8 KiB
C#
57 lines
1.8 KiB
C#
/*
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* Copyright (c) 2020 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System.Windows.Forms;
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using CefSharp;
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using SafeExamBrowser.UserInterface.Contracts;
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namespace SafeExamBrowser.Browser.Handlers
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{
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internal class KeyboardHandler : IKeyboardHandler
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{
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public event ActionRequestedEventHandler ReloadRequested;
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public event ActionRequestedEventHandler ZoomInRequested;
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public event ActionRequestedEventHandler ZoomOutRequested;
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public event ActionRequestedEventHandler ZoomResetRequested;
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public bool OnKeyEvent(IWebBrowser browserControl, IBrowser browser, KeyType type, int keyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey)
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{
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var ctrl = modifiers.HasFlag(CefEventFlags.ControlDown);
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var shift = modifiers.HasFlag(CefEventFlags.ShiftDown);
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if (type == KeyType.KeyUp && ((keyCode == (int) Keys.Add && ctrl) || (keyCode == (int) Keys.D1 && ctrl && shift)))
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{
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ZoomInRequested?.Invoke();
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}
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if (type == KeyType.KeyUp && (keyCode == (int) Keys.Subtract || keyCode == (int) Keys.OemMinus) && ctrl)
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{
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ZoomOutRequested?.Invoke();
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}
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if (type == KeyType.KeyUp && (keyCode == (int) Keys.D0 || keyCode == (int) Keys.NumPad0) && ctrl)
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{
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ZoomResetRequested?.Invoke();
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}
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return false;
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}
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public bool OnPreKeyEvent(IWebBrowser browserControl, IBrowser browser, KeyType type, int keyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey, ref bool isKeyboardShortcut)
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{
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if (type == KeyType.KeyUp && keyCode == (int) Keys.F5)
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{
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ReloadRequested?.Invoke();
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return true;
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}
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return false;
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}
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}
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}
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