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‎GtkTreeView.sln

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Microsoft Visual Studio Solution File, Format Version 12.00
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GtkTreeView", "GtkTreeView\GtkTreeView.csproj", "{4761FE89-4F29-4F52-B916-9FCC81B49E96}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{4761FE89-4F29-4F52-B916-9FCC81B49E96}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{4761FE89-4F29-4F52-B916-9FCC81B49E96}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{4761FE89-4F29-4F52-B916-9FCC81B49E96}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{4761FE89-4F29-4F52-B916-9FCC81B49E96}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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EndGlobal

‎GtkTreeView/GtkTreeView.csproj

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>WinExe</OutputType>
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<TargetFramework>net7.0</TargetFramework>
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<LangVersion>default</LangVersion>
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</PropertyGroup>
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<ItemGroup>
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<None Remove="**\*.glade" />
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<EmbeddedResource Include="**\*.glade">
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<LogicalName>%(Filename)%(Extension)</LogicalName>
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</EmbeddedResource>
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</ItemGroup>
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<ItemGroup>
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<PackageReference Include="GtkSharp" Version="3.24.24.*" />
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</ItemGroup>
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</Project>

‎GtkTreeView/MainWindow.cs

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using GLib;
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using Gtk;
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using Application = Gtk.Application;
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using UI = Gtk.Builder.ObjectAttribute;
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namespace GtkTreeView
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{
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class MainWindow : Window
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{
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[UI] private TreeView MyTree = null;
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[UI] private TreeStore MyStore = null;
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[UI] private CellRendererToggle MyToggler = null;
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[UI] private TreeViewColumn NameColumn = null;
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enum StoreColumn
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{
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Name = 0,
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CheckState = 1
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}
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enum CheckState
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{
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False = 0,
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True = 1,
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Inconsistent = 2
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}
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public MainWindow() : this(new Builder("MainWindow.glade"))
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{
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}
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private MainWindow(Builder builder) : base(builder.GetRawOwnedObject("MainWindow"))
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{
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builder.Autoconnect(this);
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var it1 = MyStore.AppendValues("Europe", (int)CheckState.False);
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var it2 = MyStore.AppendValues(it1, "England", (int)CheckState.False);
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var it3 = MyStore.AppendValues(it1, "France", (int)CheckState.False);
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var it4 = MyStore.AppendValues(it2, "London", (int)CheckState.False);
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var it5 = MyStore.AppendValues(it2, "Leicester", (int)CheckState.False);
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var it6 = MyStore.AppendValues(it3, "Paris", (int)CheckState.False);
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var it7 = MyStore.AppendValues(it3, "Nice", (int)CheckState.False);
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NameColumn.SetCellDataFunc(MyToggler, ToggleStateFunction);
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MyTree.ExpandAll();
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MyToggler.Toggled += MyTogglerOnToggled;
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DeleteEvent += Window_DeleteEvent;
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}
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private void ToggleStateFunction(TreeViewColumn tree_column, CellRenderer cell,
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ITreeModel tree_model, TreeIter iter)
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{
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var checkState = (CheckState)MyStore.GetValue(iter, (int)StoreColumn.CheckState);
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cell.SetProperty("active", new Value(checkState== CheckState.True));
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cell.SetProperty("inconsistent", new Value(checkState==CheckState.Inconsistent));
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}
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private void MyTogglerOnToggled(object o, ToggledArgs args)
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{
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MyStore.GetIter(out var it, new TreePath(args.Path));
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var checkState = (CheckState)MyStore.GetValue(it, (int)StoreColumn.CheckState);
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var newCheckState = checkState == CheckState.True ? CheckState.False : CheckState.True;
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MyStore.SetValue(it, (int)StoreColumn.CheckState, (int)newCheckState);
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//Propagate down
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AssimilateDescendantsCheckState(it, newCheckState);
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//Propagate up
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while(MyStore.IterParent(out var parent, it))
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{
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var s = CalculateCheckState(parent);
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MyStore.SetValue(parent, (int)StoreColumn.CheckState, (int)s);
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it = parent;
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}
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}
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void AssimilateDescendantsCheckState(TreeIter it, CheckState state)
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{
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if (MyStore.IterHasChild(it))
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{
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MyStore.IterChildren(out var child, it);
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do
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{
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var childState = (CheckState)MyStore.GetValue(child, (int)StoreColumn.CheckState);
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if (childState != state)
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{
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MyStore.SetValue(child, (int)StoreColumn.CheckState, (int)state);
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AssimilateDescendantsCheckState(child, state);
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}
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}while (MyStore.IterNext(ref child));
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}
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}
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CheckState CalculateCheckState(TreeIter it)
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{
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var num0 = 0;
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var num1 = 0;
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MyStore.IterChildren(out var child, it);
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do
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{
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var checkState = (int)MyStore.GetValue(child, (int)StoreColumn.CheckState);
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switch (checkState)
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{
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case 0:
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num0++;
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break;
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case 1:
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num1++;
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break;
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case 2:
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return CheckState.Inconsistent;
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}
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if (num0 > 0 && num1 > 0)
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return CheckState.Inconsistent;
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}while (MyStore.IterNext(ref child));
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return num1 > 0? CheckState.True : CheckState.False;
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}
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private void Window_DeleteEvent(object sender, DeleteEventArgs a)
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{
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Application.Quit();
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}
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}
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}

‎GtkTreeView/MainWindow.glade

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<?xml version="1.0" encoding="UTF-8"?>
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<!-- Generated with glade 3.40.0 -->
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<interface>
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<requires lib="gtk+" version="3.18"/>
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<object class="GtkTreeStore" id="MyStore">
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<columns>
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<!-- column-name Name -->
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<column type="gchararray"/>
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<!-- column-name CheckState -->
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<column type="gint"/>
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</columns>
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</object>
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<object class="GtkWindow" id="MainWindow">
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<property name="can-focus">False</property>
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<property name="title" translatable="yes">Example Window</property>
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<property name="default-width">480</property>
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<property name="default-height">240</property>
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<child>
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<object class="GtkTreeView" id="MyTree">
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<property name="visible">True</property>
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<property name="can-focus">True</property>
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<property name="model">MyStore</property>
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<property name="enable-grid-lines">both</property>
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<child internal-child="selection">
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<object class="GtkTreeSelection"/>
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</child>
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<child>
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<object class="GtkTreeViewColumn" id="NameColumn">
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<property name="resizable">True</property>
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<property name="sizing">autosize</property>
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<property name="title" translatable="yes">Name</property>
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<property name="clickable">True</property>
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<property name="reorderable">True</property>
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<property name="sort-indicator">True</property>
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<child>
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<object class="GtkCellRendererToggle" id="MyToggler"/>
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</child>
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<child>
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<object class="GtkCellRendererText"/>
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<attributes>
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<attribute name="text">0</attribute>
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</attributes>
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</child>
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</object>
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</child>
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</object>
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</child>
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</object>
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</interface>

‎GtkTreeView/Program.cs

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using System;
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using Gtk;
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namespace GtkTreeView
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{
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class Program
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{
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[STAThread]
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public static void Main(string[] args)
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{
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Application.Init();
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var app = new Application("org.GtkTreeView.GtkTreeView", GLib.ApplicationFlags.None);
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app.Register(GLib.Cancellable.Current);
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var win = new MainWindow();
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app.AddWindow(win);
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win.Show();
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Application.Run();
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}
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}
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}

‎demo.mp4

568 KB
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