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https://github.com/crskycode/GARbro.git
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moved GUI project to a subdirectory.
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morkt
298
GUI/ImagePreview.cs
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298
GUI/ImagePreview.cs
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//! \file ImagePreview.cs
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//! \date Sun Jul 06 06:34:56 2014
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//! \brief preview images.
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//
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// Copyright (C) 2014-2015 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.IO;
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using System.Linq;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.ComponentModel;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Input;
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using System.Windows.Media.Imaging;
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using System.Windows.Threading;
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using GARbro.GUI.Strings;
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using GARbro.GUI.Properties;
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using GameRes;
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using System.Text;
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using System.Windows.Documents;
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using System.Windows.Media;
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using System.Globalization;
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namespace GARbro.GUI
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{
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public partial class MainWindow : Window
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{
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private readonly BackgroundWorker m_preview_worker = new BackgroundWorker();
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private PreviewFile m_current_preview = new PreviewFile();
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private bool m_preview_pending = false;
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private UIElement m_active_viewer;
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public UIElement ActiveViewer
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{
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get { return m_active_viewer; }
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set
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{
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if (value == m_active_viewer)
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return;
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m_active_viewer = value;
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m_active_viewer.Visibility = Visibility.Visible;
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bool exists = false;
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foreach (var c in PreviewPane.Children.Cast<UIElement>())
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{
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if (c != m_active_viewer)
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c.Visibility = Visibility.Collapsed;
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else
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exists = true;
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}
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if (!exists)
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PreviewPane.Children.Add (m_active_viewer);
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}
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}
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class PreviewFile
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{
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public IEnumerable<string> Path { get; set; }
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public string Name { get; set; }
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public Entry Entry { get; set; }
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public bool IsEqual (IEnumerable<string> path, string name)
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{
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return Path != null && path.SequenceEqual (Path) && name.Equals (Name);
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}
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}
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private void InitPreviewPane ()
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{
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m_preview_worker.DoWork += (s, e) => LoadPreviewImage (e.Argument as PreviewFile);
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m_preview_worker.RunWorkerCompleted += (s, e) => {
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if (m_preview_pending)
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RefreshPreviewPane();
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};
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ActiveViewer = ImageView;
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TextView.IsWordWrapEnabled = true;
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}
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private IEnumerable<Encoding> m_encoding_list = GetEncodingList();
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public IEnumerable<Encoding> TextEncodings { get { return m_encoding_list; } }
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private static IEnumerable<Encoding> GetEncodingList ()
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{
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var list = new HashSet<Encoding>();
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list.Add (Encoding.Default);
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var oem = CultureInfo.CurrentCulture.TextInfo.OEMCodePage;
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list.Add (Encoding.GetEncoding (oem));
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list.Add (Encoding.GetEncoding (932));
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list.Add (Encoding.UTF8);
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list.Add (Encoding.Unicode);
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list.Add (Encoding.BigEndianUnicode);
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return list;
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}
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private void OnEncodingSelect (object sender, SelectionChangedEventArgs e)
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{
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var enc = this.EncodingChoice.SelectedItem as Encoding;
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if (null == enc || null == CurrentTextInput)
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return;
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TextView.CurrentEncoding = enc;
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}
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/// <summary>
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/// Display entry in preview panel
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/// </summary>
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private void PreviewEntry (Entry entry)
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{
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if (m_current_preview.IsEqual (ViewModel.Path, entry.Name))
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return;
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UpdatePreviewPane (entry);
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}
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void RefreshPreviewPane ()
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{
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m_preview_pending = false;
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var current = CurrentDirectory.SelectedItem as EntryViewModel;
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if (null != current)
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UpdatePreviewPane (current.Source);
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else
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ResetPreviewPane();
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}
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void ResetPreviewPane ()
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{
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ActiveViewer = ImageView;
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ImageCanvas.Source = null;
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TextView.Clear();
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CurrentTextInput = null;
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}
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bool IsPreviewPossible (Entry entry)
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{
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return "image" == entry.Type || "script" == entry.Type
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|| (string.IsNullOrEmpty (entry.Type) && entry.Size < 0x100000);
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}
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void UpdatePreviewPane (Entry entry)
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{
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SetStatusText ("");
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var vm = ViewModel;
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m_current_preview = new PreviewFile { Path = vm.Path, Name = entry.Name, Entry = entry };
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ImageCanvas.Source = null;
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TextView.Clear();
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if (!IsPreviewPossible (entry))
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{
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ActiveViewer = ImageView;
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return;
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}
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if ("image" != entry.Type)
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LoadPreviewText (m_current_preview);
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else if (!m_preview_worker.IsBusy)
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m_preview_worker.RunWorkerAsync (m_current_preview);
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else
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m_preview_pending = true;
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}
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private Stream m_current_text;
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private Stream CurrentTextInput
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{
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get { return m_current_text; }
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set
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{
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if (value == m_current_text)
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return;
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if (null != m_current_text)
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m_current_text.Dispose();
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m_current_text = value;
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}
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}
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Stream OpenPreviewStream (PreviewFile preview)
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{
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return VFS.OpenSeekableStream (preview.Entry);
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}
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void LoadPreviewText (PreviewFile preview)
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{
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Stream file = null;
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try
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{
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file = OpenPreviewStream (preview);
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if (!TextView.IsTextFile (file))
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{
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ResetPreviewPane();
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return;
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}
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var enc = EncodingChoice.SelectedItem as Encoding;
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if (null == enc)
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{
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enc = TextView.GuessEncoding (file);
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EncodingChoice.SelectedItem = enc;
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}
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TextView.DisplayStream (file, enc);
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ActiveViewer = TextView;
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CurrentTextInput = file;
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file = null;
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}
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catch (Exception X)
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{
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SetStatusText (X.Message);
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}
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finally
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{
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if (file != null)
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file.Dispose();
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}
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}
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void LoadPreviewImage (PreviewFile preview)
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{
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try
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{
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using (var file = OpenPreviewStream (preview))
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{
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var data = ImageFormat.Read (preview.Name, file);
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if (null != data)
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SetPreviewImage (preview, data.Bitmap);
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else
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Trace.WriteLine ("Cannot parse image format", preview.Name);
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}
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}
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catch (Exception X)
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{
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SetStatusText (X.Message);
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}
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}
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void SetPreviewImage (PreviewFile preview, BitmapSource bitmap)
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{
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if (bitmap.DpiX != Desktop.DpiX || bitmap.DpiY != Desktop.DpiY)
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{
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int stride = bitmap.PixelWidth * ((bitmap.Format.BitsPerPixel + 7) / 8);
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var pixels = new byte[stride*bitmap.PixelHeight];
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bitmap.CopyPixels (pixels, stride, 0);
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var fixed_bitmap = BitmapSource.Create (bitmap.PixelWidth, bitmap.PixelHeight,
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Desktop.DpiX, Desktop.DpiY, bitmap.Format, bitmap.Palette, pixels, stride);
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bitmap = fixed_bitmap;
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}
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if (!bitmap.IsFrozen)
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bitmap.Freeze();
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Dispatcher.Invoke (() =>
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{
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if (m_current_preview == preview) // compare by reference
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{
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ActiveViewer = ImageView;
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ImageCanvas.Source = bitmap;
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SetStatusText (string.Format (guiStrings.MsgImageSize, bitmap.PixelWidth,
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bitmap.PixelHeight, bitmap.Format.BitsPerPixel));
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}
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});
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}
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/// <summary>
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/// Fit window size to image.
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/// </summary>
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private void FitWindowExec (object sender, ExecutedRoutedEventArgs e)
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{
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var image = ImageCanvas.Source;
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if (null == image)
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return;
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var width = image.Width + Settings.Default.lvPanelWidth.Value + 1;
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var height = image.Height;
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width = Math.Max (ContentGrid.ActualWidth, width);
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height = Math.Max (ContentGrid.ActualHeight, height);
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if (width > ContentGrid.ActualWidth || height > ContentGrid.ActualHeight)
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{
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ContentGrid.Width = width;
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ContentGrid.Height = height;
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this.SizeToContent = SizeToContent.WidthAndHeight;
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Dispatcher.InvokeAsync (() => {
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this.SizeToContent = SizeToContent.Manual;
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ContentGrid.Width = double.NaN;
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ContentGrid.Height = double.NaN;
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}, DispatcherPriority.ContextIdle);
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}
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}
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}
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}
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