greenshot/Greenshot/Destinations/FileDestination.cs

/*
 * Greenshot - a free and open source screenshot tool
 * Copyright (C) 2007-2016 Thomas Braun, Jens Klingen, Robin Krom
 * 
 * For more information see: http://getgreenshot.org/
 * The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 1 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
using System;
using System.Drawing;
using System.IO;
using System.Windows.Forms;

using Greenshot.Configuration;
using GreenshotPlugin.Core;
using Greenshot.Plugin;
using Greenshot.IniFile;
using GreenshotPlugin.Controls;
using log4net;

namespace Greenshot.Destinations {
	/// <summary>
	/// Description of FileSaveAsDestination.
	/// </summary>
	public class FileDestination : AbstractDestination {
		private static readonly ILog Log = LogManager.GetLogger(typeof(FileDestination));
		private static readonly CoreConfiguration CoreConfig = IniConfig.GetIniSection<CoreConfiguration>();
		public const string DESIGNATION = "FileNoDialog";

		public override string Designation => DESIGNATION;

		public override string Description => Language.GetString(LangKey.quicksettings_destination_file);

		public override int Priority => 0;

		public override Keys EditorShortcutKeys => Keys.Control | Keys.S;

		public override Image DisplayIcon => GreenshotResources.getImage("Save.Image");

		public override ExportInformation ExportCapture(bool manuallyInitiated, ISurface surface, ICaptureDetails captureDetails) {
			ExportInformation exportInformation = new ExportInformation(Designation, Description);
			bool outputMade;
			bool overwrite;
			string fullPath;
			// Get output settings from the configuration
			SurfaceOutputSettings outputSettings = new SurfaceOutputSettings();

			if (captureDetails?.Filename != null) {
				// As we save a pre-selected file, allow to overwrite.
				overwrite = true;
				Log.InfoFormat("Using previous filename");
				fullPath = captureDetails.Filename;
				outputSettings.Format = ImageOutput.FormatForFilename(fullPath);
			} else {
				fullPath = CreateNewFilename(captureDetails);
				// As we generate a file, the configuration tells us if we allow to overwrite
				overwrite = CoreConfig.OutputFileAllowOverwrite;
			}
			if (CoreConfig.OutputFilePromptQuality) {
				QualityDialog qualityDialog = new QualityDialog(outputSettings);
				qualityDialog.ShowDialog();
			}

			// Catching any exception to prevent that the user can't write in the directory.
			// This is done for e.g. bugs #2974608, #2963943, #2816163, #2795317, #2789218, #3004642
			try {
				ImageOutput.Save(surface, fullPath, overwrite, outputSettings, CoreConfig.OutputFileCopyPathToClipboard);
				outputMade = true;
			} catch (ArgumentException ex1) {
				// Our generated filename exists, display 'save-as'
				Log.InfoFormat("Not overwriting: {0}", ex1.Message);
				// when we don't allow to overwrite present a new SaveWithDialog
				fullPath = ImageOutput.SaveWithDialog(surface, captureDetails);
				outputMade = fullPath != null;
			} catch (Exception ex2) {
				Log.Error("Error saving screenshot!", ex2);
				// Show the problem
				MessageBox.Show(Language.GetString(LangKey.error_save), Language.GetString(LangKey.error));
				// when save failed we present a SaveWithDialog
				fullPath = ImageOutput.SaveWithDialog(surface, captureDetails);
				outputMade = fullPath != null;
			}
			// Don't overwrite filename if no output is made
			if (outputMade) {
				exportInformation.ExportMade = true;
				exportInformation.Filepath = fullPath;
				if (captureDetails != null)
				{
					captureDetails.Filename = fullPath;
				}
				CoreConfig.OutputFileAsFullpath = fullPath;
			}

			ProcessExport(exportInformation, surface);
			return exportInformation;
		}

		private static string CreateNewFilename(ICaptureDetails captureDetails) {
			string fullPath;
			Log.InfoFormat("Creating new filename");
			string pattern = CoreConfig.OutputFileFilenamePattern;
			if (string.IsNullOrEmpty(pattern)) {
				pattern = "greenshot ${capturetime}";
			}
			string filename = FilenameHelper.GetFilenameFromPattern(pattern, CoreConfig.OutputFileFormat, captureDetails);
			CoreConfig.ValidateAndCorrectOutputFilePath();
			string filepath = FilenameHelper.FillVariables(CoreConfig.OutputFilePath, false);
			try {
				fullPath = Path.Combine(filepath, filename);
			} catch (ArgumentException) {
				// configured filename or path not valid, show error message...
				Log.InfoFormat("Generated path or filename not valid: {0}, {1}", filepath, filename);

				MessageBox.Show(Language.GetString(LangKey.error_save_invalid_chars), Language.GetString(LangKey.error));
				// ... lets get the pattern fixed....
				var dialogResult = new SettingsForm().ShowDialog();
				if (dialogResult == DialogResult.OK) { 
					// ... OK -> then try again:
					fullPath = CreateNewFilename(captureDetails);
				} else { 
					// ... cancelled.
					fullPath = null;
				}
				
			}
			return fullPath;
		}
	}
}