mirror of
https://github.com/ShareX/ShareX.git
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578 lines
18 KiB
C#
578 lines
18 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) 2007-2024 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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public const string FORMAT_PNG = "PNG";
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public const string FORMAT_17 = "Format17";
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private const int RetryTimes = 20;
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private const int RetryDelay = 100;
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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, string fileName = null)
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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.UseAlternativeClipboardCopyImage)
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{
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return CopyImageAlternative2(img, fileName);
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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(FORMAT_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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private static bool CopyImageAlternative2(Image img, string fileName = null)
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{
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using (Bitmap bmpNonTransparent = img.CreateEmptyBitmap(PixelFormat.Format24bppRgb))
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using (MemoryStream msPNG = 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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using (Graphics g = Graphics.FromImage(bmpNonTransparent))
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{
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g.Clear(Color.White);
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g.DrawImage(img, 0, 0, img.Width, img.Height);
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}
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dataObject.SetData(DataFormats.Bitmap, true, bmpNonTransparent);
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img.Save(msPNG, ImageFormat.Png);
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dataObject.SetData(FORMAT_PNG, false, msPNG);
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byte[] dibData = ClipboardHelpersEx.ConvertToDib(img);
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msDIB.Write(dibData, 0, dibData.Length);
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dataObject.SetData(DataFormats.Dib, false, msDIB);
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if (!string.IsNullOrEmpty(fileName))
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{
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string htmlFragment = GenerateHTMLFragment($"<img src=\"{fileName}\"/>");
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dataObject.SetData(DataFormats.Html, htmlFragment);
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}
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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 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 (Bitmap bmp = ImageHelpers.LoadImage(path))
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{
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string fileName = Path.GetFileName(path);
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return CopyImage(bmp, fileName);
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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 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 Bitmap GetImage(bool checkContainsImage = false)
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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 (!checkContainsImage || Clipboard.ContainsImage())
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{
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if (HelpersOptions.UseAlternativeClipboardGetImage)
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{
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return GetImageAlternative2();
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}
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return (Bitmap)Clipboard.GetImage();
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}
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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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return GetDIBImage(ms);
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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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public static Bitmap GetImageAlternative2()
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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 (Bitmap bmp = new Bitmap(ms))
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{
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return ClipboardHelpersEx.CloneImage(bmp);
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}
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}
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}
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}
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else if (dataFormats.Contains(DataFormats.Dib))
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{
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using (MemoryStream ms = dataObject.GetData(DataFormats.Dib) as MemoryStream)
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{
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if (ms != null)
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{
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return ClipboardHelpersEx.ImageFromClipboardDib(ms.ToArray());
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}
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}
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}
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else if (dataFormats.Contains(FORMAT_17))
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{
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using (MemoryStream ms = dataObject.GetData(FORMAT_17) as MemoryStream)
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{
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if (ms != null)
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{
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return ClipboardHelpersEx.DIBV5ToBitmap(ms.ToArray());
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}
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}
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}
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else if (dataFormats.Contains(DataFormats.Bitmap))
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{
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return dataObject.GetData(DataFormats.Bitmap, true) as Bitmap;
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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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public static string GetText(bool checkContainsText = false)
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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 (!checkContainsText || Clipboard.ContainsText())
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{
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return Clipboard.GetText();
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}
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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 text failed.");
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}
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return null;
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}
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public static string[] GetFileDropList(bool checkContainsFileDropList = false)
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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 (!checkContainsFileDropList || Clipboard.ContainsFileDropList())
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{
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return Clipboard.GetFileDropList().Cast<string>().ToArray();
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}
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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 file drop list failed.");
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}
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return null;
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}
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public static Bitmap TryGetImage()
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{
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if (ContainsImage())
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{
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return GetImage();
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}
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else if (ContainsFileDropList())
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{
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string[] files = GetFileDropList();
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if (files != null)
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{
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string imageFilePath = files.FirstOrDefault(x => FileHelpers.IsImageFile(x));
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if (!string.IsNullOrEmpty(imageFilePath))
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{
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return ImageHelpers.LoadImage(imageFilePath);
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}
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}
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}
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return null;
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}
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private static string GenerateHTMLFragment(string html)
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{
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StringBuilder sb = new StringBuilder();
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string header = "Version:0.9\r\nStartHTML:<<<<<<<<<1\r\nEndHTML:<<<<<<<<<2\r\nStartFragment:<<<<<<<<<3\r\nEndFragment:<<<<<<<<<4\r\n";
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string startHTML = "<html>\r\n<body>\r\n";
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string startFragment = "<!--StartFragment-->";
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string endFragment = "<!--EndFragment-->";
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string endHTML = "\r\n</body>\r\n</html>";
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sb.Append(header);
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int startHTMLLength = header.Length;
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int startFragmentLength = startHTMLLength + startHTML.Length + startFragment.Length;
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int endFragmentLength = startFragmentLength + Encoding.UTF8.GetByteCount(html);
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int endHTMLLength = endFragmentLength + endFragment.Length + endHTML.Length;
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sb.Replace("<<<<<<<<<1", startHTMLLength.ToString("D10"));
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sb.Replace("<<<<<<<<<2", endHTMLLength.ToString("D10"));
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sb.Replace("<<<<<<<<<3", startFragmentLength.ToString("D10"));
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sb.Replace("<<<<<<<<<4", endFragmentLength.ToString("D10"));
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sb.Append(startHTML);
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sb.Append(startFragment);
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sb.Append(html);
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sb.Append(endFragment);
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sb.Append(endHTML);
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return sb.ToString();
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}
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public static bool ContainsImage()
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{
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try
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{
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return Clipboard.ContainsImage();
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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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return false;
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}
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public static bool ContainsText()
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{
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try
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{
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return Clipboard.ContainsText();
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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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return false;
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}
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public static bool ContainsFileDropList()
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{
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try
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{
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return Clipboard.ContainsFileDropList();
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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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return false;
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}
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}
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} |