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https://github.com/gui-cs/Terminal.Gui.git
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Merge pull request #1357 from tznind/table-colors
Added support for coloring cells in TableView
This commit is contained in:
Charlie Kindel
GitHub
166
UICatalog/Scenarios/MultiColouredTable.cs
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166
UICatalog/Scenarios/MultiColouredTable.cs
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@@ -0,0 +1,166 @@
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using System;
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using System.Data;
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using Terminal.Gui;
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namespace UICatalog.Scenarios {
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[ScenarioMetadata (Name: "MultiColouredTable", Description: "Demonstrates how to multi color cell contents")]
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[ScenarioCategory ("Controls")]
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public class MultiColouredTable : Scenario {
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TableViewColors tableView;
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public override void Setup ()
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{
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Win.Title = this.GetName ();
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Win.Y = 1; // menu
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Win.Height = Dim.Fill (1); // status bar
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Top.LayoutSubviews ();
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this.tableView = new TableViewColors () {
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X = 0,
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Y = 0,
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Width = Dim.Fill (),
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Height = Dim.Fill (1),
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};
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var menu = new MenuBar (new MenuBarItem [] {
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new MenuBarItem ("_File", new MenuItem [] {
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new MenuItem ("_Quit", "", () => Quit()),
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}),
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});
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Top.Add (menu);
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var statusBar = new StatusBar (new StatusItem [] {
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new StatusItem(Key.CtrlMask | Key.Q, "~^Q~ Quit", () => Quit()),
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});
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Top.Add (statusBar);
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Win.Add (tableView);
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tableView.CellActivated += EditCurrentCell;
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var dt = new DataTable ();
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dt.Columns.Add ("Col1");
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dt.Columns.Add ("Col2");
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dt.Rows.Add ("some text", "Rainbows and Unicorns are so fun!");
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dt.Rows.Add ("some text", "When it rains you get rainbows");
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dt.Rows.Add (DBNull.Value, DBNull.Value);
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dt.Rows.Add (DBNull.Value, DBNull.Value);
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dt.Rows.Add (DBNull.Value, DBNull.Value);
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dt.Rows.Add (DBNull.Value, DBNull.Value);
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tableView.ColorScheme = new ColorScheme () {
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Disabled = Win.ColorScheme.Disabled,
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HotFocus = Win.ColorScheme.HotFocus,
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Focus = Win.ColorScheme.Focus,
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Normal = Application.Driver.MakeAttribute (Color.DarkGray, Color.Black)
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};
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tableView.Table = dt;
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}
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private void Quit ()
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{
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Application.RequestStop ();
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}
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private bool GetText (string title, string label, string initialText, out string enteredText)
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{
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bool okPressed = false;
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var ok = new Button ("Ok", is_default: true);
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ok.Clicked += () => { okPressed = true; Application.RequestStop (); };
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var cancel = new Button ("Cancel");
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cancel.Clicked += () => { Application.RequestStop (); };
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var d = new Dialog (title, 60, 20, ok, cancel);
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var lbl = new Label () {
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X = 0,
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Y = 1,
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Text = label
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};
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var tf = new TextField () {
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Text = initialText,
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X = 0,
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Y = 2,
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Width = Dim.Fill ()
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};
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d.Add (lbl, tf);
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tf.SetFocus ();
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Application.Run (d);
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enteredText = okPressed ? tf.Text.ToString () : null;
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return okPressed;
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}
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private void EditCurrentCell (TableView.CellActivatedEventArgs e)
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{
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if (e.Table == null)
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return;
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var oldValue = e.Table.Rows [e.Row] [e.Col].ToString ();
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if (GetText ("Enter new value", e.Table.Columns [e.Col].ColumnName, oldValue, out string newText)) {
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try {
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e.Table.Rows [e.Row] [e.Col] = string.IsNullOrWhiteSpace (newText) ? DBNull.Value : (object)newText;
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} catch (Exception ex) {
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MessageBox.ErrorQuery (60, 20, "Failed to set text", ex.Message, "Ok");
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}
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tableView.Update ();
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}
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}
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class TableViewColors : TableView {
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protected override void RenderCell (Terminal.Gui.Attribute cellColor, string render, bool isPrimaryCell)
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{
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int unicorns = render.IndexOf ("unicorns",StringComparison.CurrentCultureIgnoreCase);
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int rainbows = render.IndexOf ("rainbows", StringComparison.CurrentCultureIgnoreCase);
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for (int i=0;i<render.Length;i++) {
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if(unicorns != -1 && i >= unicorns && i <= unicorns + 8) {
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Driver.SetAttribute (Driver.MakeAttribute (Color.White, cellColor.Background));
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}
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if (rainbows != -1 && i >= rainbows && i <= rainbows + 8) {
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var letterOfWord = i - rainbows;
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switch(letterOfWord) {
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case 0 :
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Driver.SetAttribute (Driver.MakeAttribute (Color.Red, cellColor.Background));
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break;
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case 1:
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Driver.SetAttribute (Driver.MakeAttribute (Color.BrightRed, cellColor.Background));
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break;
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case 2:
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Driver.SetAttribute (Driver.MakeAttribute (Color.BrightYellow, cellColor.Background));
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break;
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case 3:
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Driver.SetAttribute (Driver.MakeAttribute (Color.Green, cellColor.Background));
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break;
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case 4:
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Driver.SetAttribute (Driver.MakeAttribute (Color.BrightGreen, cellColor.Background));
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break;
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case 5:
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Driver.SetAttribute (Driver.MakeAttribute (Color.BrightBlue, cellColor.Background));
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break;
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case 6:
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Driver.SetAttribute (Driver.MakeAttribute (Color.BrightCyan, cellColor.Background));
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break;
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case 7:
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Driver.SetAttribute (Driver.MakeAttribute (Color.Cyan, cellColor.Background));
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break;
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}
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}
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Driver.AddRune (render [i]);
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Driver.SetAttribute (cellColor);
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}
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}
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}
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}
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}
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@@ -23,6 +23,12 @@ namespace UICatalog.Scenarios {
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private MenuItem miCellLines;
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private MenuItem miFullRowSelect;
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private MenuItem miExpandLastColumn;
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private MenuItem miAlternatingColors;
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private MenuItem miCursor;
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ColorScheme redColorScheme;
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ColorScheme redColorSchemeAlt;
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ColorScheme alternatingColorScheme;
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public override void Setup ()
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{
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@@ -55,13 +61,13 @@ namespace UICatalog.Scenarios {
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miExpandLastColumn = new MenuItem ("_ExpandLastColumn", "", () => ToggleExpandLastColumn()){Checked = tableView.Style.ExpandLastColumn, CheckType = MenuItemCheckStyle.Checked },
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new MenuItem ("_AllLines", "", () => ToggleAllCellLines()),
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new MenuItem ("_NoLines", "", () => ToggleNoCellLines()),
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miAlternatingColors = new MenuItem ("Alternating Colors", "", () => ToggleAlternatingColors()){CheckType = MenuItemCheckStyle.Checked},
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miCursor = new MenuItem ("Invert Selected Cell First Character", "", () => ToggleInvertSelectedCellFirstCharacter()){Checked = tableView.Style.InvertSelectedCellFirstCharacter,CheckType = MenuItemCheckStyle.Checked},
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new MenuItem ("_ClearColumnStyles", "", () => ClearColumnStyles()),
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}),
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});
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Top.Add (menu);
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var statusBar = new StatusBar (new StatusItem [] {
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new StatusItem(Key.F2, "~F2~ OpenExample", () => OpenExample(true)),
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new StatusItem(Key.F3, "~F3~ CloseExample", () => CloseExample()),
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@@ -88,6 +94,28 @@ namespace UICatalog.Scenarios {
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tableView.KeyPress += TableViewKeyPress;
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SetupScrollBar();
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redColorScheme = new ColorScheme(){
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Disabled = Win.ColorScheme.Disabled,
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HotFocus = Win.ColorScheme.HotFocus,
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Focus = Win.ColorScheme.Focus,
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Normal = Application.Driver.MakeAttribute(Color.Red,Win.ColorScheme.Normal.Background)
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};
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alternatingColorScheme = new ColorScheme(){
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Disabled = Win.ColorScheme.Disabled,
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HotFocus = Win.ColorScheme.HotFocus,
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Focus = Win.ColorScheme.Focus,
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Normal = Application.Driver.MakeAttribute(Color.White,Color.BrightBlue)
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};
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redColorSchemeAlt = new ColorScheme(){
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Disabled = Win.ColorScheme.Disabled,
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HotFocus = Win.ColorScheme.HotFocus,
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Focus = Win.ColorScheme.Focus,
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Normal = Application.Driver.MakeAttribute(Color.Red,Color.BrightBlue)
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};
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}
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private void SetupScrollBar ()
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@@ -226,8 +254,29 @@ namespace UICatalog.Scenarios {
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tableView.Update();
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}
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private void ToggleAlternatingColors()
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{
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//toggle menu item
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miAlternatingColors.Checked = !miAlternatingColors.Checked;
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if(miAlternatingColors.Checked){
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tableView.Style.RowColorGetter = (a)=> {return a.RowIndex%2==0 ? alternatingColorScheme : null;};
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}
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else
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{
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tableView.Style.RowColorGetter = null;
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}
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tableView.SetNeedsDisplay();
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}
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private void ToggleInvertSelectedCellFirstCharacter ()
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{
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//toggle menu item
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miCursor.Checked = !miCursor.Checked;
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tableView.Style.InvertSelectedCellFirstCharacter = miCursor.Checked;
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tableView.SetNeedsDisplay ();
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}
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private void CloseExample ()
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{
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tableView.Table = null;
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@@ -268,7 +317,15 @@ namespace UICatalog.Scenarios {
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// align positive values left
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TextAlignment.Left:
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// not a double
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TextAlignment.Left
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TextAlignment.Left,
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ColorGetter = (a)=> a.CellValue is double d ?
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// color 0 and negative values red
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d <= 0.0000001 ? a.RowIndex%2==0 && miAlternatingColors.Checked ? redColorSchemeAlt: redColorScheme :
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// use normal scheme for positive values
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null:
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// not a double
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null
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};
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tableView.Style.ColumnStyles.Add(tableView.Table.Columns["DateCol"],dateFormatStyle);
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