OpenTween/TweetThumbnail.cs

   1 // OpenTween - Client of Twitter
   2 // Copyright (c) 2012 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
   3 // All rights reserved.
   4 //
   5 // This file is part of OpenTween.
   6 //
   7 // This program is free software; you can redistribute it and/or modify it
   8 // under the terms of the GNU General Public License as published by the Free
   9 // Software Foundation; either version 3 of the License, or (at your option)
  10 // any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful, but
  13 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  15 // for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
  19 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  20 // Boston, MA 02110-1301, USA.
  21
  22 #nullable enable
  23
  24 using System;
  25 using System.Collections.Generic;
  26 using System.ComponentModel;
  27 using System.Diagnostics.CodeAnalysis;
  28 using System.Drawing;
  29 using System.Data;
  30 using System.Linq;
  31 using System.Net;
  32 using System.Net.Http;
  33 using System.Text;
  34 using System.Windows.Forms;
  35 using System.Text.RegularExpressions;
  36 using System.Threading.Tasks;
  37 using OpenTween.Thumbnail;
  38 using System.Threading;
  39 using OpenTween.Models;
  40 using System.Runtime.InteropServices;
  41
  42 namespace OpenTween
  43 {
  44     public partial class TweetThumbnail : UserControl
  45     {
  46         protected internal List<OTPictureBox> pictureBox = new List<OTPictureBox>();
  47         protected MouseWheelMessageFilter filter = new MouseWheelMessageFilter();
  48
  49         public event EventHandler<EventArgs> ThumbnailLoading;
  50         public event EventHandler<ThumbnailDoubleClickEventArgs> ThumbnailDoubleClick;
  51         public event EventHandler<ThumbnailImageSearchEventArgs> ThumbnailImageSearchClick;
  52
  53         public ThumbnailInfo Thumbnail
  54             => (ThumbnailInfo)this.pictureBox[this.scrollBar.Value].Tag;
  55
  56         public TweetThumbnail()
  57             => this.InitializeComponent();
  58
  59         public Task ShowThumbnailAsync(PostClass post)
  60             => this.ShowThumbnailAsync(post, CancellationToken.None);
  61
  62         public async Task ShowThumbnailAsync(PostClass post, CancellationToken cancelToken)
  63         {
  64             var loadTasks = new List<Task>();
  65
  66             this.scrollBar.Enabled = false;
  67             this.scrollBar.Visible = false;
  68
  69             if (post.ExpandedUrls.Length == 0 && post.Media.Count == 0 && post.PostGeo == null)
  70             {
  71                 this.SetThumbnailCount(0);
  72                 return;
  73             }
  74
  75             var thumbnails = (await this.GetThumbailInfoAsync(post, cancelToken))
  76                 .ToArray();
  77
  78             cancelToken.ThrowIfCancellationRequested();
  79
  80             this.SetThumbnailCount(thumbnails.Length);
  81             if (thumbnails.Length == 0)
  82                 return;
  83
  84             for (var i = 0; i < thumbnails.Length; i++)
  85             {
  86                 var thumb = thumbnails[i];
  87                 var picbox = this.pictureBox[i];
  88
  89                 picbox.Tag = thumb;
  90                 picbox.ContextMenuStrip = this.contextMenuStrip;
  91
  92                 var loadTask = picbox.SetImageFromTask(() => thumb.LoadThumbnailImageAsync(cancelToken));
  93                 loadTasks.Add(loadTask);
  94
  95                 var tooltipText = thumb.TooltipText;
  96                 if (!MyCommon.IsNullOrEmpty(tooltipText))
  97                 {
  98                     this.toolTip.SetToolTip(picbox, tooltipText);
  99                     picbox.AccessibleDescription = tooltipText;
 100                 }
 101
 102                 cancelToken.ThrowIfCancellationRequested();
 103             }
 104
 105             if (thumbnails.Length > 1)
 106             {
 107                 this.scrollBar.Enabled = true;
 108                 this.scrollBar.Visible = true;
 109             }
 110
 111             this.ThumbnailLoading?.Invoke(this, EventArgs.Empty);
 112
 113             await Task.WhenAll(loadTasks).ConfigureAwait(false);
 114         }
 115
 116         private string GetImageSearchUriGoogle(string image_uri)
 117             => @"https://www.google.com/searchbyimage?image_url=" + Uri.EscapeDataString(image_uri);
 118
 119         private string GetImageSearchUriSauceNao(string imageUri)
 120             => @"https://saucenao.com/search.php?url=" + Uri.EscapeDataString(imageUri);
 121
 122         protected virtual Task<IEnumerable<ThumbnailInfo>> GetThumbailInfoAsync(PostClass post, CancellationToken token)
 123             => ThumbnailGenerator.GetThumbnailsAsync(post, token);
 124
 125         /// <summary>
 126         /// 表示するサムネイルの数を設定する
 127         /// </summary>
 128         /// <param name="count">表示するサムネイルの数</param>
 129         protected void SetThumbnailCount(int count)
 130         {
 131             if (count == 0 && this.pictureBox.Count == 0)
 132                 return;
 133
 134             using (ControlTransaction.Layout(this.panelPictureBox, false))
 135             {
 136                 this.panelPictureBox.Controls.Clear();
 137                 foreach (var picbox in this.pictureBox)
 138                 {
 139                     var memoryImage = picbox.Image;
 140
 141                     filter.Unregister(picbox);
 142
 143                     picbox.MouseWheel -= this.pictureBox_MouseWheel;
 144                     picbox.DoubleClick -= this.pictureBox_DoubleClick;
 145                     picbox.Dispose();
 146
 147                     memoryImage?.Dispose();
 148
 149                     // メモリリーク対策 (http://stackoverflow.com/questions/2792427#2793714)
 150                     picbox.ContextMenuStrip = null;
 151                 }
 152                 this.pictureBox.Clear();
 153
 154                 this.scrollBar.Maximum = (count > 0) ? count - 1 : 0;
 155                 this.scrollBar.Value = 0;
 156
 157                 for (var i = 0; i < count; i++)
 158                 {
 159                     var picbox = CreatePictureBox("pictureBox" + i);
 160                     picbox.Visible = (i == 0);
 161                     picbox.MouseWheel += this.pictureBox_MouseWheel;
 162                     picbox.DoubleClick += this.pictureBox_DoubleClick;
 163
 164                     filter.Register(picbox);
 165
 166                     this.panelPictureBox.Controls.Add(picbox);
 167                     this.pictureBox.Add(picbox);
 168                 }
 169             }
 170         }
 171
 172         [SuppressMessage("Microsoft.Reliability", "CA2000:DisposeObjectsBeforeLosingScope")]
 173         protected virtual OTPictureBox CreatePictureBox(string name)
 174         {
 175             return new OTPictureBox
 176             {
 177                 Name = name,
 178                 SizeMode = PictureBoxSizeMode.Zoom,
 179                 WaitOnLoad = false,
 180                 Dock = DockStyle.Fill,
 181                 AccessibleRole = AccessibleRole.Graphic,
 182             };
 183         }
 184
 185         public void OpenImage(ThumbnailInfo thumb)
 186             => this.ThumbnailDoubleClick?.Invoke(this, new ThumbnailDoubleClickEventArgs(thumb));
 187
 188         public void ScrollUp()
 189         {
 190             var newval = this.scrollBar.Value - this.scrollBar.SmallChange;
 191
 192             if (newval < this.scrollBar.Minimum)
 193                 newval = this.scrollBar.Minimum;
 194
 195             this.scrollBar.Value = newval;
 196         }
 197
 198         public void ScrollDown()
 199         {
 200             var newval = this.scrollBar.Value + this.scrollBar.SmallChange;
 201
 202             if (newval > this.scrollBar.Maximum)
 203                 newval = this.scrollBar.Maximum;
 204
 205             this.scrollBar.Value = newval;
 206         }
 207
 208         protected override void ScaleControl(SizeF factor, BoundsSpecified specified)
 209         {
 210             base.ScaleControl(factor, specified);
 211             OTBaseForm.ScaleChildControl(this.scrollBar, factor);
 212         }
 213
 214         private void scrollBar_ValueChanged(object sender, EventArgs e)
 215         {
 216             using (ControlTransaction.Layout(this, false))
 217             {
 218                 var value = this.scrollBar.Value;
 219                 for (var i = 0; i < this.pictureBox.Count; i++)
 220                 {
 221                     this.pictureBox[i].Visible = (i == value);
 222                 }
 223             }
 224         }
 225
 226         private void pictureBox_MouseWheel(object sender, MouseEventArgs e)
 227         {
 228             if (e.Delta > 0)
 229                 this.ScrollUp();
 230             else
 231                 this.ScrollDown();
 232         }
 233
 234         private void pictureBox_DoubleClick(object sender, EventArgs e)
 235         {
 236             if (((PictureBox)sender).Tag is ThumbnailInfo thumb)
 237                 this.OpenImage(thumb);
 238         }
 239
 240         private void contextMenuStrip_Opening(object sender, CancelEventArgs e)
 241         {
 242             var picbox = (OTPictureBox)this.contextMenuStrip.SourceControl;
 243             var thumb = (ThumbnailInfo)picbox.Tag;
 244
 245             var searchTargetUri = thumb.FullSizeImageUrl ?? thumb.ThumbnailImageUrl ?? null;
 246             if (searchTargetUri != null)
 247             {
 248                 this.searchImageGoogleMenuItem.Enabled = true;
 249                 this.searchImageGoogleMenuItem.Tag = searchTargetUri;
 250                 this.searchImageSauceNaoMenuItem.Enabled = true;
 251                 this.searchImageSauceNaoMenuItem.Tag = searchTargetUri;
 252             }
 253             else
 254             {
 255                 this.searchImageGoogleMenuItem.Enabled = false;
 256                 this.searchImageSauceNaoMenuItem.Enabled = false;
 257             }
 258         }
 259
 260         private void searchSimilarImageMenuItem_Click(object sender, EventArgs e)
 261         {
 262             var searchTargetUri = (string)this.searchImageGoogleMenuItem.Tag;
 263             var searchUri = this.GetImageSearchUriGoogle(searchTargetUri);
 264
 265             this.ThumbnailImageSearchClick?.Invoke(this, new ThumbnailImageSearchEventArgs(searchUri));
 266         }
 267
 268         private void searchImageSauceNaoMenuItem_Click(object sender, EventArgs e)
 269         {
 270             var searchTargetUri = (string)this.searchImageSauceNaoMenuItem.Tag;
 271             var searchUri = this.GetImageSearchUriSauceNao(searchTargetUri);
 272
 273             this.ThumbnailImageSearchClick?.Invoke(this, new ThumbnailImageSearchEventArgs(searchUri));
 274         }
 275
 276         private void openMenuItem_Click(object sender, EventArgs e)
 277             => this.OpenImage(this.Thumbnail);
 278
 279         private void copyUrlMenuItem_Click(object sender, EventArgs e)
 280         {
 281             try
 282             {
 283                 Clipboard.SetText(this.Thumbnail.FullSizeImageUrl ?? this.Thumbnail.MediaPageUrl);
 284             }
 285             catch (ExternalException ex)
 286             {
 287                 MessageBox.Show(ex.Message);
 288             }
 289         }
 290     }
 291
 292     public class ThumbnailDoubleClickEventArgs : EventArgs
 293     {
 294         public ThumbnailInfo Thumbnail { get; }
 295
 296         public ThumbnailDoubleClickEventArgs(ThumbnailInfo thumbnail)
 297             => this.Thumbnail = thumbnail;
 298     }
 299
 300     public class ThumbnailImageSearchEventArgs : EventArgs
 301     {
 302         public string ImageUrl { get; }
 303
 304         public ThumbnailImageSearchEventArgs(string url)
 305             => this.ImageUrl = url;
 306     }
 307 }