mirror of
https://github.com/greenshot/greenshot.git
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26fe579d31
Removed a lot of dead code, and remove the old OCR code as we don't even know if it still works.
109 lines
4.1 KiB
C#
109 lines
4.1 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2021 Thomas Braun, Jens Klingen, Robin Krom
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*
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* For more information see: http://getgreenshot.org/
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* The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 1 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Drawing;
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using System.Runtime.InteropServices;
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using System.IO;
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namespace GreenshotPlugin.UnmanagedHelpers {
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/// <summary>
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/// Description of Shell32.
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/// </summary>
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public static class Shell32 {
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[DllImport("shell32", CharSet = CharSet.Unicode)]
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public static extern int ExtractIconEx(string sFile, int iIndex, out IntPtr piLargeVersion, out IntPtr piSmallVersion, int amountIcons);
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[DllImport("shell32", CharSet = CharSet.Unicode)]
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private static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbFileInfo, uint uFlags);
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[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
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private struct SHFILEINFO {
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public readonly IntPtr hIcon;
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public readonly int iIcon;
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public readonly uint dwAttributes;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
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public readonly string szDisplayName;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
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public readonly string szTypeName;
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};
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// Browsing for directory.
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private const uint SHGFI_ICON = 0x000000100; // get icon
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private const uint SHGFI_LINKOVERLAY = 0x000008000; // put a link overlay on icon
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private const uint SHGFI_LARGEICON = 0x000000000; // get large icon
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private const uint SHGFI_SMALLICON = 0x000000001; // get small icon
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private const uint SHGFI_USEFILEATTRIBUTES = 0x000000010; // use passed dwFileAttribute
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private const uint FILE_ATTRIBUTE_NORMAL = 0x00000080;
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/// <summary>
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/// Options to specify the size of icons to return.
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/// </summary>
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public enum IconSize {
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/// <summary>
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/// Specify large icon - 32 pixels by 32 pixels.
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/// </summary>
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Large = 0,
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/// <summary>
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/// Specify small icon - 16 pixels by 16 pixels.
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/// </summary>
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Small = 1
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}
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/// <summary>
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/// Returns an icon for a given file extension - indicated by the name parameter.
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/// See: http://msdn.microsoft.com/en-us/library/windows/desktop/bb762179(v=vs.85).aspx
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/// </summary>
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/// <param name="filename">Filename</param>
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/// <param name="size">Large or small</param>
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/// <param name="linkOverlay">Whether to include the link icon</param>
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/// <returns>System.Drawing.Icon</returns>
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public static Icon GetFileIcon(string filename, IconSize size, bool linkOverlay) {
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SHFILEINFO shfi = new SHFILEINFO();
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// SHGFI_USEFILEATTRIBUTES makes it simulate, just gets the icon for the extension
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uint flags = SHGFI_ICON | SHGFI_USEFILEATTRIBUTES;
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if (linkOverlay) {
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flags += SHGFI_LINKOVERLAY;
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}
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// Check the size specified for return.
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if (IconSize.Small == size) {
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flags += SHGFI_SMALLICON;
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} else {
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flags += SHGFI_LARGEICON;
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}
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SHGetFileInfo(Path.GetFileName(filename), FILE_ATTRIBUTE_NORMAL, ref shfi, (uint)Marshal.SizeOf(shfi), flags);
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// Only return an icon if we really got one
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if (shfi.hIcon != IntPtr.Zero) {
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// Copy (clone) the returned icon to a new object, thus allowing us to clean-up properly
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Icon icon = (Icon)Icon.FromHandle(shfi.hIcon).Clone();
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// Cleanup
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User32.DestroyIcon(shfi.hIcon);
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return icon;
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}
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return null;
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}
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}
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}
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