mirror of
https://github.com/ShareX/ShareX.git
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357 lines
No EOL
11 KiB
C#
357 lines
No EOL
11 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;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Windows.Forms;
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namespace ShareX.HelpersLib
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{
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public static class ClipboardHelpers
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{
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private const int RetryTimes = 20, RetryDelay = 100;
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private const string FORMAT_PNG = "PNG";
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private const string FORMAT_17 = "Format17";
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private static readonly object ClipboardLock = new object();
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private static bool CopyData(IDataObject data, bool copy = true)
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{
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if (data != null)
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{
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lock (ClipboardLock)
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{
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Clipboard.SetDataObject(data, copy, RetryTimes, RetryDelay);
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}
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return true;
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}
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return false;
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}
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public static bool Clear()
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{
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try
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{
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IDataObject data = new DataObject();
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CopyData(data, false);
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}
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catch (Exception e)
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{
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DebugHelper.WriteException(e, "Clipboard clear failed.");
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}
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return false;
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}
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public static bool CopyText(string text)
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{
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if (!string.IsNullOrEmpty(text))
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{
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try
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{
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IDataObject data = new DataObject();
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string dataFormat;
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if (Environment.OSVersion.Platform != PlatformID.Win32NT || Environment.OSVersion.Version.Major < 5)
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{
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dataFormat = DataFormats.Text;
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}
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else
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{
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dataFormat = DataFormats.UnicodeText;
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}
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data.SetData(dataFormat, false, text);
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return CopyData(data);
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}
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catch (Exception e)
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{
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DebugHelper.WriteException(e, "Clipboard copy text failed.");
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}
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}
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return false;
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}
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public static bool CopyImage(Image img)
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{
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if (img != null)
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{
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try
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{
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if (HelpersOptions.UseAlternativeCopyImage)
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{
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return CopyImageAlternative(img);
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}
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if (HelpersOptions.DefaultCopyImageFillBackground)
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{
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return CopyImageDefaultFillBackground(img, Color.White);
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}
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return CopyImageDefault(img);
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}
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catch (Exception e)
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{
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DebugHelper.WriteException(e, "Clipboard copy image failed.");
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}
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}
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return false;
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}
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private static bool CopyImageDefault(Image img)
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{
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IDataObject dataObject = new DataObject();
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dataObject.SetData(DataFormats.Bitmap, true, img);
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return CopyData(dataObject);
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}
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private static bool CopyImageDefaultFillBackground(Image img, Color background)
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{
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using (Bitmap bmp = img.CreateEmptyBitmap(PixelFormat.Format24bppRgb))
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using (Graphics g = Graphics.FromImage(bmp))
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{
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g.Clear(background);
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g.DrawImage(img, 0, 0, img.Width, img.Height);
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IDataObject dataObject = new DataObject();
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dataObject.SetData(DataFormats.Bitmap, true, bmp);
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return CopyData(dataObject);
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}
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}
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private static bool CopyImageAlternative(Image img)
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{
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using (MemoryStream msPNG = new MemoryStream())
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using (MemoryStream msBMP = new MemoryStream())
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using (MemoryStream msDIB = new MemoryStream())
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{
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IDataObject dataObject = new DataObject();
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img.Save(msPNG, ImageFormat.Png);
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dataObject.SetData("PNG", false, msPNG);
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img.Save(msBMP, ImageFormat.Bmp);
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msBMP.CopyStreamTo(msDIB, 14, (int)msBMP.Length - 14);
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dataObject.SetData(DataFormats.Dib, true, msDIB);
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return CopyData(dataObject);
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}
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}
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public static bool CopyFile(string path)
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{
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if (!string.IsNullOrEmpty(path))
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{
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return CopyFile(new string[] { path });
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}
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return false;
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}
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public static bool CopyFile(string[] paths)
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{
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if (paths != null && paths.Length > 0)
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{
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try
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{
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IDataObject dataObject = new DataObject();
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dataObject.SetData(DataFormats.FileDrop, true, paths);
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return CopyData(dataObject);
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}
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catch (Exception e)
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{
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DebugHelper.WriteException(e, "Clipboard copy file failed.");
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}
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}
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return false;
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}
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public static bool CopyTextFromFile(string path)
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{
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if (!string.IsNullOrEmpty(path) && File.Exists(path))
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{
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try
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{
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string text = File.ReadAllText(path, Encoding.UTF8);
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return CopyText(text);
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}
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catch (Exception e)
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{
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DebugHelper.WriteException(e, "Clipboard copy text from file failed.");
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}
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}
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return false;
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}
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public static bool CopyImageFromFile(string path)
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{
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if (!string.IsNullOrEmpty(path) && File.Exists(path))
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{
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try
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{
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using (Image img = ImageHelpers.LoadImage(path))
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{
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return CopyImage(img);
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}
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}
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catch (Exception e)
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{
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DebugHelper.WriteException(e, "Clipboard copy image from file failed.");
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}
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}
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return false;
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}
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public static Image GetImage()
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{
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try
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{
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lock (ClipboardLock)
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{
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if (HelpersOptions.UseAlternativeGetImage)
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{
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return GetImageAlternative();
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}
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return Clipboard.GetImage();
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}
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}
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catch (Exception e)
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{
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DebugHelper.WriteException(e, "Clipboard get image failed.");
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}
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return null;
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}
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private static Image GetImageAlternative()
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{
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IDataObject dataObject = Clipboard.GetDataObject();
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if (dataObject != null)
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{
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string[] dataFormats = dataObject.GetFormats(false);
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if (dataFormats.Contains(FORMAT_PNG))
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{
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using (MemoryStream ms = dataObject.GetData(FORMAT_PNG) as MemoryStream)
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{
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if (ms != null)
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{
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using (Image img = Image.FromStream(ms))
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{
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return (Image)img.Clone();
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}
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}
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}
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}
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else
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{
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foreach (string format in new[] { DataFormats.Dib, FORMAT_17 })
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{
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if (dataFormats.Contains(format))
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{
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using (MemoryStream ms = dataObject.GetData(format) as MemoryStream)
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{
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if (ms != null)
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{
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try
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{
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Image img = GetDIBImage(ms);
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if (img != null)
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{
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return img;
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}
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}
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catch (Exception e)
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{
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DebugHelper.WriteException(e);
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}
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}
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}
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}
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}
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}
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if (dataObject.GetDataPresent(DataFormats.Bitmap, true))
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{
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return dataObject.GetData(DataFormats.Bitmap, true) as Image;
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}
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}
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return null;
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}
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private static Image GetDIBImage(MemoryStream ms)
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{
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byte[] dib = ms.ToArray();
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BITMAPINFOHEADER infoHeader = Helpers.ByteArrayToStructure<BITMAPINFOHEADER>(dib);
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IntPtr gcHandle = IntPtr.Zero;
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try
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{
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GCHandle handle = GCHandle.Alloc(dib, GCHandleType.Pinned);
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gcHandle = GCHandle.ToIntPtr(handle);
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if (infoHeader.biSizeImage == 0)
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{
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infoHeader.biSizeImage = (uint)(infoHeader.biWidth * infoHeader.biHeight * (infoHeader.biBitCount >> 3));
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}
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using (Bitmap bmp = new Bitmap(infoHeader.biWidth, infoHeader.biHeight, -(int)(infoHeader.biSizeImage / infoHeader.biHeight),
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infoHeader.biBitCount == 32 ? PixelFormat.Format32bppArgb : PixelFormat.Format24bppRgb,
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new IntPtr((long)handle.AddrOfPinnedObject() + infoHeader.OffsetToPixels + (infoHeader.biHeight - 1) * (int)(infoHeader.biSizeImage / infoHeader.biHeight))))
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{
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return new Bitmap(bmp);
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}
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}
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finally
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{
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if (gcHandle != IntPtr.Zero)
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{
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GCHandle.FromIntPtr(gcHandle).Free();
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}
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}
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}
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}
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} |