mirror of
https://github.com/greenshot/greenshot
synced 2025-07-14 00:53:51 -07:00
4de75cdb69
git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@2149 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4
499 lines
No EOL
17 KiB
C#
499 lines
No EOL
17 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2012 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 Sourceforge: http://sourceforge.net/projects/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.Collections.Generic;
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using System.Diagnostics;
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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.Text;
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using System.Threading;
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using System.Windows.Forms;
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using Greenshot.IniFile;
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using Greenshot.Plugin;
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using GreenshotPlugin.UnmanagedHelpers;
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namespace GreenshotPlugin.Core {
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/// <summary>
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/// Description of ClipboardHelper.
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/// </summary>
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public static class ClipboardHelper {
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private static readonly log4net.ILog LOG = log4net.LogManager.GetLogger(typeof(ClipboardHelper));
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private static readonly Object clipboardLockObject = new Object();
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private static readonly CoreConfiguration config = IniConfig.GetIniSection<CoreConfiguration>();
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private static IntPtr nextClipboardViewer = IntPtr.Zero;
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// Template for the HTML Text on the clipboard
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// see: http://msdn.microsoft.com/en-us/library/ms649015%28v=vs.85%29.aspx
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// or: http://msdn.microsoft.com/en-us/library/Aa767917.aspx
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private const string HTML_CLIPBOARD_STRING = @"Version:0.9
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StartHTML:<<<<<<<1
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EndHTML:<<<<<<<2
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StartFragment:<<<<<<<3
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EndFragment:<<<<<<<4
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StartSelection:<<<<<<<3
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EndSelection:<<<<<<<4
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<!DOCTYPE>
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<HTML>
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<HEAD>
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<TITLE>Greenshot capture</TITLE>
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</HEAD>
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<BODY>
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<!--StartFragment -->
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<img border='0' src='file:///${file}' width='${width}' height='${height}'>
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<!--EndFragment -->
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</BODY>
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</HTML>";
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private const string HTML_CLIPBOARD_BASE64_STRING = @"Version:0.9
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StartHTML:<<<<<<<1
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EndHTML:<<<<<<<2
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StartFragment:<<<<<<<3
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EndFragment:<<<<<<<4
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StartSelection:<<<<<<<3
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EndSelection:<<<<<<<4
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<!DOCTYPE>
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<HTML>
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<HEAD>
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<TITLE>Greenshot capture</TITLE>
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</HEAD>
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<BODY>
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<!--StartFragment -->
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<img border='0' src='data:image/${format};base64,${data}' width='${width}' height='${height}'>
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<!--EndFragment -->
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</BODY>
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</HTML>";
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/// <summary>
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/// Get the current "ClipboardOwner" but only if it isn't us!
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/// </summary>
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/// <returns>current clipboard owner</returns>
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private static string GetClipboardOwner() {
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string owner = null;
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try {
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IntPtr hWnd = User32.GetClipboardOwner();
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if (hWnd != IntPtr.Zero) {
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IntPtr pid = IntPtr.Zero;
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IntPtr tid = User32.GetWindowThreadProcessId( hWnd, out pid);
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Process me = Process.GetCurrentProcess();
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Process ownerProcess = Process.GetProcessById( pid.ToInt32() );
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// Exclude myself
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if (ownerProcess != null && me.Id != ownerProcess.Id) {
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// Get Process Name
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owner = ownerProcess.ProcessName;
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// Try to get the starting Process Filename, this might fail.
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try {
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owner = ownerProcess.Modules[0].FileName;
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} catch (Exception) {
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}
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}
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}
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} catch (Exception e) {
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LOG.Warn("Non critical error: Couldn't get clipboard owner.", e);
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}
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return owner;
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}
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/// <summary>
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/// Wrapper for the SetDataObject with a bool "copy"
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/// Default is true, the information on the clipboard will stay even if our application quits
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/// For our own Types the other SetDataObject should be called with false.
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/// </summary>
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/// <param name="ido"></param>
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private static void SetDataObject(IDataObject ido) {
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SetDataObject(ido, true);
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}
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/// <summary>
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/// The SetDataObject that will lock/try/catch clipboard operations making it save and not show exceptions.
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/// The bool "copy" is used to decided if the information stays on the clipboard after exit.
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/// </summary>
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/// <param name="ido"></param>
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/// <param name="copy"></param>
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private static void SetDataObject(IDataObject ido, bool copy) {
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lock (clipboardLockObject) {
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int retryCount = 2;
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while (retryCount >= 0) {
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try {
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Clipboard.SetDataObject(ido, copy);
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break;
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} catch (Exception ee) {
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if (retryCount == 0) {
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string messageText = null;
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string clipboardOwner = GetClipboardOwner();
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if (clipboardOwner != null) {
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messageText = Language.GetFormattedString("clipboard_inuse", clipboardOwner);
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} else {
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messageText = Language.GetString("clipboard_error");
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}
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LOG.Error(messageText, ee);
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} else {
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Thread.Sleep(100);
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}
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} finally {
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--retryCount;
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}
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}
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}
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}
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/// <summary>
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/// Safe wrapper for Clipboard.ContainsText
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/// Created for Bug #3432313
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/// </summary>
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/// <returns>boolean if there is text on the clipboard</returns>
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public static bool ContainsText() {
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lock (clipboardLockObject) {
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int retryCount = 2;
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while (retryCount >= 0) {
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try {
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return Clipboard.ContainsText();
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} catch (Exception ee) {
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if (retryCount == 0) {
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string messageText = null;
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string clipboardOwner = GetClipboardOwner();
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if (clipboardOwner != null) {
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messageText = Language.GetFormattedString("clipboard_inuse", clipboardOwner);
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} else {
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messageText = Language.GetString("clipboard_error");
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}
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LOG.Error(messageText, ee);
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} else {
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Thread.Sleep(100);
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}
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} finally {
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--retryCount;
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}
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}
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}
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return false;
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}
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/// <summary>
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/// Safe wrapper for Clipboard.ContainsImage
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/// Created for Bug #3432313
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/// </summary>
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/// <returns>boolean if there is an image on the clipboard</returns>
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public static bool ContainsImage() {
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lock (clipboardLockObject) {
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int retryCount = 2;
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while (retryCount >= 0) {
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try {
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return Clipboard.ContainsImage();
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} catch (Exception ee) {
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if (retryCount == 0) {
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string messageText = null;
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string clipboardOwner = GetClipboardOwner();
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if (clipboardOwner != null) {
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messageText = Language.GetFormattedString("clipboard_inuse", clipboardOwner);
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} else {
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messageText = Language.GetString("clipboard_error");
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}
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LOG.Error(messageText, ee);
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} else {
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Thread.Sleep(100);
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}
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} finally {
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--retryCount;
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}
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}
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}
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return false;
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}
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/// <summary>
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/// Safe wrapper for Clipboard.GetImage
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/// Created for Bug #3432313
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/// </summary>
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/// <returns>Image if there is an image on the clipboard</returns>
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public static Image GetImage() {
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lock (clipboardLockObject) {
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int retryCount = 2;
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while (retryCount >= 0) {
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try {
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// Try to get the best format, currently we support PNG and "others"
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IList<string> formats = GetFormats();
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if (formats.Contains("PNG")) {
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Object pngObject = GetClipboardData("PNG");
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if (pngObject is MemoryStream) {
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MemoryStream png_stream = pngObject as MemoryStream;
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using (Image tmpImage = Image.FromStream(png_stream)) {
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return ImageHelper.Clone(tmpImage);
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}
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}
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}
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return Clipboard.GetImage();
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} catch (Exception ee) {
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if (retryCount == 0) {
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string messageText = null;
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string clipboardOwner = GetClipboardOwner();
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if (clipboardOwner != null) {
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messageText = Language.GetFormattedString("clipboard_inuse", clipboardOwner);
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} else {
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messageText = Language.GetString("clipboard_error");
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}
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LOG.Error(messageText, ee);
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} else {
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Thread.Sleep(100);
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}
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} finally {
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--retryCount;
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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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/// <summary>
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/// Safe wrapper for Clipboard.GetText
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/// Created for Bug #3432313
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/// </summary>
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/// <returns>string if there is text on the clipboard</returns>
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public static string GetText() {
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lock (clipboardLockObject) {
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int retryCount = 2;
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while (retryCount >= 0) {
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try {
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return Clipboard.GetText();
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} catch (Exception ee) {
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if (retryCount == 0) {
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string messageText = null;
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string clipboardOwner = GetClipboardOwner();
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if (clipboardOwner != null) {
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messageText = Language.GetFormattedString("clipboard_inuse", clipboardOwner);
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} else {
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messageText = Language.GetString("clipboard_error");
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}
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LOG.Error(messageText, ee);
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} else {
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Thread.Sleep(100);
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}
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} finally {
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--retryCount;
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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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/// <summary>
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/// Set text to the clipboard
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/// </summary>
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/// <param name="text"></param>
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public static void SetClipboardData(string text) {
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IDataObject ido = new DataObject();
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ido.SetData(DataFormats.Text, true, text);
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SetDataObject(ido);
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}
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private static string getHTMLString(Image image, string filename) {
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string utf8EncodedHTMLString = Encoding.GetEncoding(0).GetString(Encoding.UTF8.GetBytes(HTML_CLIPBOARD_STRING));
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utf8EncodedHTMLString= utf8EncodedHTMLString.Replace("${width}", image.Width.ToString());
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utf8EncodedHTMLString= utf8EncodedHTMLString.Replace("${height}", image.Height.ToString());
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utf8EncodedHTMLString= utf8EncodedHTMLString.Replace("${file}", filename);
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StringBuilder sb=new StringBuilder();
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sb.Append(utf8EncodedHTMLString);
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sb.Replace("<<<<<<<1", (utf8EncodedHTMLString.IndexOf("<HTML>") + "<HTML>".Length).ToString("D8"));
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sb.Replace("<<<<<<<2", (utf8EncodedHTMLString.IndexOf("</HTML>")).ToString("D8"));
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sb.Replace("<<<<<<<3", (utf8EncodedHTMLString.IndexOf("<!--StartFragment -->")+"<!--StartFragment -->".Length).ToString("D8"));
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sb.Replace("<<<<<<<4", (utf8EncodedHTMLString.IndexOf("<!--EndFragment -->")).ToString("D8"));
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return sb.ToString();
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}
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private static string getHTMLDataURLString(Image image, MemoryStream pngStream) {
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string utf8EncodedHTMLString = Encoding.GetEncoding(0).GetString(Encoding.UTF8.GetBytes(HTML_CLIPBOARD_BASE64_STRING));
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utf8EncodedHTMLString= utf8EncodedHTMLString.Replace("${width}", image.Width.ToString());
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utf8EncodedHTMLString= utf8EncodedHTMLString.Replace("${height}", image.Height.ToString());
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utf8EncodedHTMLString = utf8EncodedHTMLString.Replace("${format}", "png");
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utf8EncodedHTMLString = utf8EncodedHTMLString.Replace("${data}", Convert.ToBase64String(pngStream.GetBuffer(),0, (int)pngStream.Length));
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StringBuilder sb=new StringBuilder();
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sb.Append(utf8EncodedHTMLString);
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sb.Replace("<<<<<<<1", (utf8EncodedHTMLString.IndexOf("<HTML>") + "<HTML>".Length).ToString("D8"));
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sb.Replace("<<<<<<<2", (utf8EncodedHTMLString.IndexOf("</HTML>")).ToString("D8"));
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sb.Replace("<<<<<<<3", (utf8EncodedHTMLString.IndexOf("<!--StartFragment -->")+"<!--StartFragment -->".Length).ToString("D8"));
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sb.Replace("<<<<<<<4", (utf8EncodedHTMLString.IndexOf("<!--EndFragment -->")).ToString("D8"));
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return sb.ToString();
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}
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/// <summary>
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/// Set an Image to the clipboard
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/// This method will place 2 images to the clipboard, one of type Bitmap which
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/// works with pretty much everything and one of type Dib for e.g. OpenOffice
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/// because OpenOffice has a bug http://qa.openoffice.org/issues/show_bug.cgi?id=85661
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/// The Dib (Device Indenpendend Bitmap) in 32bpp actually won't work with Powerpoint 2003!
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/// When pasting a Dib in PP 2003 the Bitmap is somehow shifted left!
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/// For this problem the user should not use the direct paste (=Dib), but select Bitmap
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/// </summary>
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private const int BITMAPFILEHEADER_LENGTH = 14;
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public static void SetClipboardData(Image image) {
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DataObject ido = new DataObject();
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// This will work for Office and most other applications
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//ido.SetData(DataFormats.Bitmap, true, image);
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MemoryStream bmpStream = null;
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MemoryStream imageStream = null;
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MemoryStream pngStream = null;
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try {
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// Create PNG stream
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if (config.ClipboardFormats.Contains(ClipboardFormat.PNG) || config.ClipboardFormats.Contains(ClipboardFormat.HTMLDATAURL)) {
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pngStream = new MemoryStream();
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// PNG works for Powerpoint
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image.Save(pngStream, ImageFormat.Png);
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pngStream.Seek(0, SeekOrigin.Begin);
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}
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if (config.ClipboardFormats.Contains(ClipboardFormat.PNG)) {
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// Set the PNG stream
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ido.SetData("PNG", false, pngStream);
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}
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if (config.ClipboardFormats.Contains(ClipboardFormat.DIB)) {
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bmpStream = new MemoryStream();
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// Save image as BMP
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image.Save(bmpStream, ImageFormat.Bmp);
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imageStream = new MemoryStream();
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// Copy the source, but skip the "BITMAPFILEHEADER" which has a size of 14
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imageStream.Write(bmpStream.GetBuffer(), BITMAPFILEHEADER_LENGTH, (int) bmpStream.Length - BITMAPFILEHEADER_LENGTH);
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// Set the DIB to the clipboard DataObject
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ido.SetData(DataFormats.Dib, true, imageStream);
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}
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// Set the HTML
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if (config.ClipboardFormats.Contains(ClipboardFormat.HTML)) {
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string tmpFile = ImageOutput.SaveToTmpFile(image, new OutputSettings(OutputFormat.png), null);
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string html = getHTMLString(image, tmpFile);
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ido.SetText(html, TextDataFormat.Html);
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} else if (config.ClipboardFormats.Contains(ClipboardFormat.HTMLDATAURL)) {
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string html = getHTMLDataURLString(image, pngStream);
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ido.SetText(html, TextDataFormat.Html);
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}
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} finally {
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// we need to use the SetDataOject before the streams are closed otherwise the buffer will be gone!
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// Place the DataObject to the clipboard
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SetDataObject(ido);
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if (pngStream != null) {
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pngStream.Dispose();
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pngStream = null;
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}
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if (bmpStream != null) {
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bmpStream.Dispose();
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bmpStream = null;
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}
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if (imageStream != null) {
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imageStream.Dispose();
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imageStream = null;
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}
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}
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}
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/// <summary>
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/// Set Object with type Type to the clipboard
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/// </summary>
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/// <param name="type">Type</param>
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/// <param name="obj">object</param>
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public static void SetClipboardData(Type type, Object obj) {
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DataFormats.Format format = DataFormats.GetFormat(type.FullName);
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//now copy to clipboard
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IDataObject dataObj = new DataObject();
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dataObj.SetData(format.Name, false, obj);
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// Use false to make the object dissapear when the application stops.
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SetDataObject(dataObj, true);
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}
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/// <summary>
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/// Retrieve a list of all formats currently on the clipboard
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/// </summary>
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/// <returns>List<string> with the current formats</returns>
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public static List<string> GetFormats() {
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string[] formats = null;
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lock (clipboardLockObject) {
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try {
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IDataObject dataObj = Clipboard.GetDataObject();
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if (dataObj != null) {
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formats = dataObj.GetFormats();
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}
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} catch (Exception e) {
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LOG.Error("Error in GetFormats.", e);
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}
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}
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if (formats != null) {
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return new List<string>(formats);
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}
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return new List<string>();
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}
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/// <summary>
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/// Check if there is currently something on the clipboard which has one of the supplied formats
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/// </summary>
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/// <param name="formats">string[] with formats</param>
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/// <returns>true if one of the formats was found</returns>
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public static bool ContainsFormat(string[] formats) {
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bool formatFound = false;
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List<string> currentFormats = GetFormats();
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if (currentFormats == null || currentFormats.Count == 0 ||formats == null || formats.Length == 0) {
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return false;
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}
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foreach (string format in formats) {
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if (currentFormats.Contains(format)) {
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formatFound = true;
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break;
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}
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}
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return formatFound;
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}
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/// <summary>
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/// Get Object of type Type from the clipboard
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/// </summary>
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/// <param name="type">Type to get</param>
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/// <returns>object from clipboard</returns>
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public static Object GetClipboardData(Type type) {
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string format = type.FullName;
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return GetClipboardData(format);
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}
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/// <summary>
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/// Get Object for format from the clipboard
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/// </summary>
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/// <param name="format">format to get</param>
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/// <returns>object from clipboard</returns>
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public static Object GetClipboardData(string format) {
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Object obj = null;
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lock (clipboardLockObject) {
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try {
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IDataObject dataObj = Clipboard.GetDataObject();
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if(dataObj != null && dataObj.GetDataPresent(format)) {
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obj = dataObj.GetData(format);
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}
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|
} catch (Exception e) {
|
|
LOG.Error("Error in GetClipboardData.", e);
|
|
}
|
|
}
|
|
return obj;
|
|
}
|
|
}
|
|
} |