1 // OpenTween - Client of Twitter
2 // Copyright (c) 2013 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
3 // All rights reserved.
5 // This file is part of OpenTween.
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)
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
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.
23 using System.Collections.Generic;
25 using System.Runtime.InteropServices;
27 using System.Windows.Forms;
28 using System.ComponentModel;
30 using System.Threading.Tasks;
31 using System.Threading;
33 using System.Net.Http;
38 public class OTPictureBox : PictureBox
41 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
42 public new MemoryImage Image
44 get { return this.memoryImage; }
47 this.memoryImage = value;
48 base.Image = value != null ? value.Image : null;
50 this.RestoreSizeMode();
53 private MemoryImage memoryImage;
56 [DefaultValue(PictureBoxSizeMode.Normal)]
57 public new PictureBoxSizeMode SizeMode
59 get { return this.currentSizeMode; }
62 this.currentSizeMode = value;
64 if (base.Image != base.InitialImage && base.Image != base.ErrorImage)
66 base.SizeMode = value;
72 /// InitialImage や ErrorImage の表示に SizeMode を一時的に変更するため、
73 /// 現在の SizeMode を記憶しておくためのフィールド
75 private PictureBoxSizeMode currentSizeMode;
77 public void ShowInitialImage()
79 base.Image = base.InitialImage;
81 // InitialImage は SizeMode の値に依らず中央等倍に表示する必要がある
82 base.SizeMode = PictureBoxSizeMode.CenterImage;
85 public void ShowErrorImage()
87 base.Image = base.ErrorImage;
89 // ErrorImage は SizeMode の値に依らず中央等倍に表示する必要がある
90 base.SizeMode = PictureBoxSizeMode.CenterImage;
93 private void RestoreSizeMode()
95 base.SizeMode = this.currentSizeMode;
98 public async Task SetImageFromTask(Func<Task<MemoryImage>> imageTask)
102 this.ShowInitialImage();
103 this.Image = await imageTask();
107 this.ShowErrorImage();
112 catch (HttpRequestException) { }
113 catch (InvalidImageException) { }
114 catch (TaskCanceledException) { }
115 catch (WebException) { }
119 protected override void OnPaint(PaintEventArgs pe)
125 catch (ExternalException)
127 // アニメーション GIF 再生中に発生するエラーの対策
128 // 参照: https://sourceforge.jp/ticket/browse.php?group_id=6526&tid=32894
129 this.ShowErrorImage();
134 [EditorBrowsable(EditorBrowsableState.Never)]
135 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
136 public new string ImageLocation
138 get { throw new NotImplementedException(); }
139 set { throw new NotImplementedException(); }
142 [EditorBrowsable(EditorBrowsableState.Never)]
143 public new void Load(string url)
145 throw new NotImplementedException();