mirror of
https://github.com/ShareX/ShareX.git
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146 lines
No EOL
4.6 KiB
C#
146 lines
No EOL
4.6 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (c) 2007-2018 ShareX Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using System.Diagnostics;
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using System.Windows.Forms;
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namespace ShareX.HelpersLib
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{
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public class HotkeyForm : Form
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{
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public delegate void HotkeyEventHandler(ushort id, Keys key, Modifiers modifier);
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public event HotkeyEventHandler HotkeyPress;
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public int HotkeyRepeatLimit { get; set; }
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private Stopwatch repeatLimitTimer;
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public HotkeyForm()
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{
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HotkeyRepeatLimit = 1000;
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repeatLimitTimer = Stopwatch.StartNew();
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}
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public void RegisterHotkey(HotkeyInfo hotkeyInfo)
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{
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if (hotkeyInfo != null && hotkeyInfo.Status != HotkeyStatus.Registered)
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{
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if (!hotkeyInfo.IsValidHotkey)
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{
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hotkeyInfo.Status = HotkeyStatus.NotConfigured;
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return;
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}
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if (hotkeyInfo.ID == 0)
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{
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string uniqueID = Helpers.GetUniqueID();
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hotkeyInfo.ID = NativeMethods.GlobalAddAtom(uniqueID);
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if (hotkeyInfo.ID == 0)
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{
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DebugHelper.WriteLine("Unable to generate unique hotkey ID: " + hotkeyInfo);
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hotkeyInfo.Status = HotkeyStatus.Failed;
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return;
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}
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}
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if (!NativeMethods.RegisterHotKey(Handle, hotkeyInfo.ID, (uint)hotkeyInfo.ModifiersEnum, (uint)hotkeyInfo.KeyCode))
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{
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NativeMethods.GlobalDeleteAtom(hotkeyInfo.ID);
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DebugHelper.WriteLine("Unable to register hotkey: " + hotkeyInfo);
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hotkeyInfo.ID = 0;
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hotkeyInfo.Status = HotkeyStatus.Failed;
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return;
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}
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hotkeyInfo.Status = HotkeyStatus.Registered;
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}
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}
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public bool UnregisterHotkey(HotkeyInfo hotkeyInfo)
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{
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if (hotkeyInfo != null)
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{
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if (hotkeyInfo.ID > 0)
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{
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bool result = NativeMethods.UnregisterHotKey(Handle, hotkeyInfo.ID);
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if (result)
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{
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NativeMethods.GlobalDeleteAtom(hotkeyInfo.ID);
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hotkeyInfo.ID = 0;
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hotkeyInfo.Status = HotkeyStatus.NotConfigured;
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return true;
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}
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}
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hotkeyInfo.Status = HotkeyStatus.Failed;
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}
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return false;
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}
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protected override void WndProc(ref Message m)
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{
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if (m.Msg == (int)WindowsMessages.HOTKEY && CheckRepeatLimitTime())
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{
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ushort id = (ushort)m.WParam;
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Keys key = (Keys)(((int)m.LParam >> 16) & 0xFFFF);
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Modifiers modifier = (Modifiers)((int)m.LParam & 0xFFFF);
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OnKeyPressed(id, key, modifier);
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return;
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}
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base.WndProc(ref m);
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}
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protected void OnKeyPressed(ushort id, Keys key, Modifiers modifier)
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{
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if (HotkeyPress != null)
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{
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HotkeyPress(id, key, modifier);
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}
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}
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private bool CheckRepeatLimitTime()
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{
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if (HotkeyRepeatLimit > 0)
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{
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if (repeatLimitTimer.ElapsedMilliseconds >= HotkeyRepeatLimit)
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{
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repeatLimitTimer.Reset();
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repeatLimitTimer.Start();
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}
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else
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{
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return false;
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}
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}
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return true;
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}
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}
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} |