実際に自作フォトビューアーを使ったのですが、TreeNodeにファイルパスを表示させた場合、深い階層にある同じフォルダのファイルを登録した場合、最初のほうは全部同じなので見分けが付きにくいです。そこでファイル名はフルパスとファイル名だけから選べるようにしてみました。
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public partial class Form1 : Form { public Form1() { // コンストラクタ内に以下を追加 checkBoxIsFullPath.Checked = IsNodeTextFullPath; } private void checkBoxIsFullPath_CheckedChanged(object sender, EventArgs e) { IsNodeTextFullPath = checkBoxIsFullPath.Checked; } bool _isNodeTextFullPath = false; bool IsNodeTextFullPath { set { _isNodeTextFullPath = value; foreach (TreeNode node in treeView1.Nodes) { Data data = (Data)node.Tag; SetNodeText(node, data.FilePath); } } get { return _isNodeTextFullPath; } } void SetNodeText(TreeNode node, string filePath) { if (IsNodeTextFullPath) { node.Text = filePath; } else { FileInfo info = new FileInfo(filePath); node.Text = info.Name; } } private void TreeView1_DragDrop(object sender, DragEventArgs e) { if (e.Data.GetDataPresent(DataFormats.FileDrop)) { TreeView1_DragDropFles(e); } if (e.Data.GetDataPresent(typeof(TreeNode))) { Point point = treeView1.PointToClient(new Point(e.X, e.Y)); TreeNode targetNode = treeView1.GetNodeAt(point); int targetIndex = treeView1.Nodes.IndexOf(targetNode); TreeNode sourceNode = (TreeNode)e.Data.GetData(typeof(TreeNode)); treeView1.BeginUpdate(); treeView1.Nodes.Remove(sourceNode); treeView1.Nodes.Insert(targetIndex, sourceNode); treeView1.SelectedNode = sourceNode; treeView1.EndUpdate(); } } void TreeView1_DragDropFles(DragEventArgs e) { string[] files = (string[])e.Data.GetData(DataFormats.FileDrop); Point point = treeView1.PointToClient(new Point(e.X, e.Y)); if (treeView1.SelectedNode == null) { files = files.OrderBy(x => x).ToArray(); treeView1.BeginUpdate(); foreach (var path in files) { if (IsImageFile(path)) { TreeNode node = new TreeNode(); SetNodeText(node, path); // 変更 node.Tag = new Data(path, false); treeView1.Nodes.Add(node); } } treeView1.EndUpdate(); } else { int index = treeView1.Nodes.IndexOf(treeView1.SelectedNode); files = files.OrderByDescending(x => x).ToArray(); treeView1.BeginUpdate(); foreach (var path in files) { if (IsImageFile(path)) { TreeNode node = new TreeNode(); SetNodeText(node, path); // 変更 node.Tag = new Data(path, false); treeView1.Nodes.Insert(index + 1, node); } } treeView1.EndUpdate(); } } private void MenuItemThumbnail_Click(object sender, EventArgs e) { TreeNode oldNode = treeView1.SelectedNode; Data oldData = null; if (oldNode != null) { Data data = (Data)oldNode.Tag; oldData = data; data.Comment = textBox1.Text; treeView1.SelectedNode = null; } List<Data> datas = new List<Data>(); foreach (TreeNode node in treeView1.Nodes) datas.Add((Data)node.Tag); FormThumbnail form2 = new FormThumbnail(); form2.Datas = datas; form2.ShowDialog(); treeView1.BeginUpdate(); treeView1.Nodes.Clear(); TreeNode newNode = null; foreach (Data data in form2.Datas) { TreeNode node = new TreeNode(); SetNodeText(node, data.FilePath); // 変更 node.Checked = data.IsChecked; node.Tag = data; treeView1.Nodes.Add(node); if (oldData != null && oldData == data) newNode = node; } treeView1.EndUpdate(); treeView1.SelectedNode = newNode; } void OpenFile(string filePath) { if (!File.Exists(filePath)) return; XmlSerializer xml = new XmlSerializer(typeof(Doc)); StreamReader sr = new StreamReader(filePath); Doc doc = (Doc)xml.Deserialize(sr); sr.Close(); treeView1.BeginUpdate(); treeView1.Nodes.Clear(); foreach (Data data in doc.Datas) { TreeNode node = new TreeNode(); node.Tag = data; SetNodeText(node, data.FilePath); // 変更 node.Checked = data.IsChecked; treeView1.Nodes.Add(node); } treeView1.EndUpdate(); if (treeView1.Nodes.Count > 0) treeView1.SelectedNode = treeView1.Nodes[0]; else { treeView1.SelectedNode = null; pictureBox1.Image = null; textBox1.Text = null; } } } |
それからサムネイルを表示するときも同じように
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public partial class UserControlEx : UserControl { public void SetText(string path, bool isTextFullPath) { if (isTextFullPath) textBox1.Text = path; else { System.IO.FileInfo info = new System.IO.FileInfo(path); textBox1.Text = info.Name; } } } |
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public partial class FormThumbnail : Form { public FormThumbnail() { // コンストラクタ内に以下を追加 checkBoxIsFullPath.Anchor = AnchorStyles.Left | AnchorStyles.Bottom; checkBoxIsFullPath.Checked = IsItemTextFullPath; checkBoxIsFullPath.CheckedChanged += CheckBoxIsFullPath_CheckedChanged; } private void CheckBoxIsFullPath_CheckedChanged(object sender, EventArgs e) { IsItemTextFullPath = checkBoxIsFullPath.Checked; } bool _isItemTextFullPath = true; // 最初にtrueにしておけば他を書き換える必要がない bool IsItemTextFullPath { get { return _isItemTextFullPath; } set { _isItemTextFullPath = value; foreach (UserControlEx ctrl in userControlIces) { Data data = (Data)ctrl.Tag; ctrl.SetText(data.FilePath, value); } } } } |
