Gtk3 TreeViewの表示の簡略化
gtk-Sharpチュートリアルに書かれているサンプルを簡略化します
treeViewの表示の書き方の課題
CellRendererTextやSetCellDataFuncを毎回書くのが面倒
拡張クラスの中で実行させ、書く行数を減らす
using System;
using System.Collections.Generic;
using Gtk;
using UI = Gtk.Builder.ObjectAttribute;
namespace treeView3GtkApplication
{
class MainWindow : Window
{
[UI] private TreeView _treeView1 = null;
List<Song> songs;
public MainWindow() : this(new Builder("MainWindow.glade"))
{
}
private MainWindow(Builder builder) : base(builder.GetRawOwnedObject("MainWindow"))
{
builder.Autoconnect(this);
_mkTreeView();
}
void _mkTreeView()
{
songs = new List<Song>();
songs.Add (new Song ("Dancing DJs vs. Roxette", "Fading Like a Flower"));
songs.Add (new Song ("Xaiver", "Give me the night"));
songs.Add (new Song ("Daft Punk", "Technologic"));
Gtk.TreeViewColumnEx artistColumn = new Gtk.TreeViewColumnEx ();
artistColumn.Title = "Artist";
//CellRenderの生成
artistColumn._mkCellRendererText();
//モデルのプロパティを指定する
artistColumn.bindingPropertyName = "Artist";
Gtk.TreeViewColumnEx songColumn = new Gtk.TreeViewColumnEx ();
songColumn.Title = "Song Title";
songColumn._mkCellRendererText();
songColumn.bindingPropertyName = "Title";
_treeView1.AppendColumn (artistColumn);
_treeView1.AppendColumn (songColumn);
Gtk.ListStore musicListStore = new Gtk.ListStore (typeof (Song));
foreach (Song song in songs) {
musicListStore.AppendValues (song);
}
_treeView1._mkBinding();
_treeView1.Model = musicListStore;
}
}
public class Song
{
public Song (string artist, string title)
{
this.Artist = artist;
this.Title = title;
}
//リフレクションを有効にするためgetとsetを書く
public string Artist { get; set; }
public string Title { get; set; }
}
}
解説
リフレクションを使うため、モデルにgeter seterを書く
treeViewを拡張クラスにする
treeViewColumnにExを追加した派生クラス(継承)をにする
bindingPropertyNameにモデルのプロパティを指定する
TreeView拡張クラス
using System;
using System.Reflection;
using Gtk;
namespace Gtk{
static class GtkExtensions
{
public static void _mkBinding(this TreeView treeView)
{
foreach (TreeViewColumnEx column in treeView.Columns){
if(!(column is TreeViewColumnEx)) {
continue;
}
TreeViewColumnEx columnt1 = (column as TreeViewColumnEx);
columnt1._mkBinding();
}
}
}
}
TreeViewColumnEx 派生クラス
using System;
using System.Reflection;
using Gtk;
using Gdk;
public static class objectExtensions {
public static object _performSelector_Property(this object obj, string propertyName) {
try
{
Type magicType = obj.GetType();
PropertyInfo pi = magicType.GetProperty(propertyName,
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Instance | BindingFlags.Static);
MethodInfo getMethod = pi.GetGetMethod();
object result = getMethod.Invoke(obj, null);
return result;
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
}
namespace Gtk {
public class TreeViewColumnEx : TreeViewColumn {
public String bindingPropertyName = "";
public CellRendererText _mkCellRendererText(string title = "",bool isPackStart = true) {
if (title != "") {
this.Title = title;
}
Gtk.CellRendererText CellRendererText1 = new Gtk.CellRendererText();
this.PackStart(CellRendererText1, isPackStart);
return CellRendererText1;
}
public CellRendererPixbuf _mkCellRendererPixbuf(string title = "",bool isPackStart = true) {
if (title != "") {
this.Title = title;
}
Gtk.CellRendererPixbuf CellRendererPixbuf1 = new Gtk.CellRendererPixbuf();
this.PackStart(CellRendererPixbuf1, isPackStart);
return CellRendererPixbuf1;
}
public CellRendererToggle _mkCellRendererToggle(string title = "",bool isPackStart = true) {
if (title != "") {
this.Title = title;
}
Gtk.CellRendererToggle CellRendererToggle1 = new Gtk.CellRendererToggle();
this.PackStart(CellRendererToggle1, isPackStart);
return CellRendererToggle1;
}
public CellRendererProgress _mkCellRendererProgress(string title = "",bool isPackStart = true) {
if (title != "") {
this.Title = title;
}
Gtk.CellRendererProgress CellRendererProgress1 = new Gtk.CellRendererProgress();
this.PackStart(CellRendererProgress1, isPackStart);
return CellRendererProgress1;
}
public void _mkBinding() {
if(this.Cells.Length > 0) {
this.SetCellDataFunc(this.Cells[0], new Gtk.TreeCellDataFunc(_RenderCellDo));
}
}
private void _RenderCellDo(Gtk.TreeViewColumn column, Gtk.CellRenderer cell, Gtk.ITreeModel model, Gtk.TreeIter iter) {
if(!(column is TreeViewColumnEx)) {
return;
}
TreeViewColumnEx columnt1 = (column as TreeViewColumnEx);
if(columnt1.bindingPropertyName == "" || columnt1.bindingPropertyName == null) {
Console.WriteLine("PropertyNameがない");
return;
}
object classObj = (object)model.GetValue(iter, 0);
object value = classObj._performSelector_Property(columnt1.bindingPropertyName);
if (value != null && cell is Gtk.CellRendererText && (value is String)) {
(cell as Gtk.CellRendererText).Text = value as String;
}else if (value != null && cell is Gtk.CellRendererText && (value is int)) {
(cell as Gtk.CellRendererText).Text = ((int)value).ToString();
}else if (value != null && cell is Gtk.CellRendererText && (value is long)) {
(cell as Gtk.CellRendererText).Text = ((long)value).ToString();
}else if(value != null && cell is Gtk.CellRendererText && (value is DateTime)) {
(cell as Gtk.CellRendererText).Text = ((DateTime)value).ToString();
} else if(value != null && cell is Gtk.CellRendererPixbuf && (value is String)) {
(cell as Gtk.CellRendererPixbuf).Pixbuf = new Pixbuf(null, (value as String));
} else if(value != null && cell is Gtk.CellRendererToggle && (value is String)) {
(cell as Gtk.CellRendererToggle).Active = Convert.ToBoolean((value is String));
} else if(value != null && cell is Gtk.CellRendererProgress && (value is String)) {
(cell as Gtk.CellRendererProgress).Value = Convert.ToInt32((value is String));
} else if(value != null && cell is Gtk.CellRendererPixbuf && (value is byte[])) {
(cell as Gtk.CellRendererPixbuf).Pixbuf = new Pixbuf((byte[])value);
} else if(value != null && cell is Gtk.CellRendererToggle && (value is Boolean)) {
(cell as Gtk.CellRendererToggle).Active = (Boolean)value;
} else if(value != null && cell is Gtk.CellRendererProgress && (value is int)) {
(cell as Gtk.CellRendererProgress).Value = (int)value;
}
}
}
}