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@@ -1,23 +1,22 @@
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//
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-// ConsoleDriver.cs: Definition for the Console Driver API
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+// ConsoleDriver.cs: Base class for Terminal.Gui ConsoleDriver implementations.
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//
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-// Authors:
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-// Miguel de Icaza ([email protected])
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-//
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-// Define this to enable diagnostics drawing for Window Frames
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using NStack;
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using System;
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using System.Collections.Generic;
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+using System.ComponentModel;
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using System.Diagnostics;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Threading.Tasks;
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-using Unix.Terminal;
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namespace Terminal.Gui {
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/// <summary>
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- /// Basic colors that can be used to set the foreground and background colors in console applications.
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+ /// Colors that can be used to set the foreground and background colors in console applications.
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/// </summary>
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+ /// <remarks>
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+ /// The <see cref="Color.Invalid"/> value indicates either no-color has been set or the color is invalid.
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+ /// </remarks>
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public enum Color {
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/// <summary>
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/// The black color.
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@@ -82,26 +81,112 @@ namespace Terminal.Gui {
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/// <summary>
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/// The White color.
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/// </summary>
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- White
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+ White,
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+ /// <summary>
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+ /// Indicates an invalid or un-set color value.
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+ /// </summary>
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+ Invalid = -1
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}
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/// <summary>
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- /// Attributes are used as elements that contain both a foreground and a background or platform specific features
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+ ///
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+ /// </summary>
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+ public class TrueColor {
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+ /// <summary>
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+ /// Red color component.
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+ /// </summary>
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+ public int Red { get; }
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+ /// <summary>
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+ /// Green color component.
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+ /// </summary>
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+ public int Green { get; }
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+ /// <summary>
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+ /// Blue color component.
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+ /// </summary>
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+ public int Blue { get; }
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+
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+ /// <summary>
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+ /// Initializes a new instance of the <see cref="TrueColor"/> struct.
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+ /// </summary>
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+ /// <param name="red"></param>
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+ /// <param name="green"></param>
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+ /// <param name="blue"></param>
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+ public TrueColor (int red, int green, int blue)
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+ {
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+ Red = red;
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+ Green = green;
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+ Blue = blue;
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+ }
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+
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+ /// <summary>
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+ ///
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+ /// </summary>
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+ /// <returns></returns>
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+ public Color ToConsoleColor ()
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+ {
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+ var trueColorMap = new Dictionary<TrueColor, Color> () {
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+ { new TrueColor (0,0,0),Color.Black},
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+ { new TrueColor (0, 0, 0x80),Color.Blue},
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+ { new TrueColor (0, 0x80, 0),Color.Green},
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+ { new TrueColor (0, 0x80, 0x80),Color.Cyan},
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+ { new TrueColor (0x80, 0, 0),Color.Red},
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+ { new TrueColor (0x80, 0, 0x80),Color.Magenta},
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+ { new TrueColor (0xC1, 0x9C, 0x00),Color.Brown}, // TODO confirm this
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+ { new TrueColor (0xC0, 0xC0, 0xC0),Color.Gray},
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+ { new TrueColor (0x80, 0x80, 0x80),Color.DarkGray},
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+ { new TrueColor (0, 0, 0xFF),Color.BrightBlue},
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+ { new TrueColor (0, 0xFF, 0),Color.BrightGreen},
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+ { new TrueColor (0, 0xFF, 0xFF),Color.BrightCyan},
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+ { new TrueColor (0xFF, 0, 0),Color.BrightRed},
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+ { new TrueColor (0xFF, 0, 0xFF),Color.BrightMagenta },
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+ { new TrueColor (0xFF, 0xFF, 0),Color.BrightYellow},
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+ { new TrueColor (0xFF, 0xFF, 0xFF),Color.White},
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+ };
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+ // Iterate over all colors in the map
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+ var distances = trueColorMap.Select (
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+ k => Tuple.Create (
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+ // the candidate we are considering matching against (RGB)
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+ k.Key,
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+
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+ CalculateDistance (k.Key, this)
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+ ));
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+
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+ // get the closest
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+ var match = distances.OrderBy (t => t.Item2).First ();
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+ return trueColorMap [match.Item1];
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+ }
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+
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+ private float CalculateDistance (TrueColor color1, TrueColor color2)
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+ {
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+ // use RGB distance
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+ return
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+ Math.Abs (color1.Red - color2.Red) +
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+ Math.Abs (color1.Green - color2.Green) +
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+ Math.Abs (color1.Blue - color2.Blue);
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+ }
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+ }
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+
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+ /// <summary>
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+ /// Attributes are used as elements that contain both a foreground and a background or platform specific features.
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/// </summary>
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/// <remarks>
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- /// <see cref="Attribute"/>s are needed to map colors to terminal capabilities that might lack colors, on color
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- /// scenarios, they encode both the foreground and the background color and are used in the <see cref="ColorScheme"/>
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- /// class to define color schemes that can be used in your application.
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+ /// <see cref="Attribute"/>s are needed to map colors to terminal capabilities that might lack colors.
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+ /// They encode both the foreground and the background color and are used in the <see cref="ColorScheme"/>
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+ /// class to define color schemes that can be used in an application.
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/// </remarks>
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public struct Attribute {
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/// <summary>
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- /// The color attribute value.
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+ /// The <see cref="ConsoleDriver"/>-specific color attribute value. If <see cref="Initialized"/> is <see langword="false"/>
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+ /// the value of this property is invalid (typcially because the Attribute was created before a driver was loaded)
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+ /// and the attribute should be re-made (see <see cref="Make(Color, Color)"/>) before it is used.
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/// </summary>
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public int Value { get; }
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+
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/// <summary>
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/// The foreground color.
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/// </summary>
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public Color Foreground { get; }
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+
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/// <summary>
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/// The background color.
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/// </summary>
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@@ -114,11 +199,13 @@ namespace Terminal.Gui {
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/// <param name="value">Value.</param>
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public Attribute (int value)
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{
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- Color foreground = default;
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- Color background = default;
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+ Color foreground = Color.Invalid;
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+ Color background = Color.Invalid;
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+ Initialized = false;
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if (Application.Driver != null) {
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Application.Driver.GetColors (value, out foreground, out background);
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+ Initialized = true;
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}
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Value = value;
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Foreground = foreground;
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@@ -136,6 +223,7 @@ namespace Terminal.Gui {
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Value = value;
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Foreground = foreground;
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Background = background;
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+ Initialized = true;
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}
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/// <summary>
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@@ -145,7 +233,9 @@ namespace Terminal.Gui {
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/// <param name="background">Background</param>
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public Attribute (Color foreground = new Color (), Color background = new Color ())
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{
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- Value = Make (foreground, background).Value;
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+ var make = Make (foreground, background);
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+ Initialized = make.Initialized;
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+ Value = make.Value;
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Foreground = foreground;
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Background = background;
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}
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@@ -158,29 +248,42 @@ namespace Terminal.Gui {
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public Attribute (Color color) : this (color, color) { }
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/// <summary>
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- /// Implicit conversion from an <see cref="Attribute"/> to the underlying Int32 representation
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+ /// Implicit conversion from an <see cref="Attribute"/> to the underlying, driver-specific, Int32 representation
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+ /// of the color.
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/// </summary>
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- /// <returns>The integer value stored in the attribute.</returns>
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+ /// <returns>The driver-specific color value stored in the attribute.</returns>
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/// <param name="c">The attribute to convert</param>
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- public static implicit operator int (Attribute c) => c.Value;
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+ public static implicit operator int (Attribute c)
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+ {
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+ if (!c.Initialized) throw new InvalidOperationException ("Attribute: Attributes must be initialized by a driver before use.");
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+ return c.Value;
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+ }
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/// <summary>
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- /// Implicitly convert an integer value into an <see cref="Attribute"/>
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+ /// Implicitly convert an driver-specific color value into an <see cref="Attribute"/>
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/// </summary>
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- /// <returns>An attribute with the specified integer value.</returns>
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+ /// <returns>An attribute with the specified driver-specific color value.</returns>
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/// <param name="v">value</param>
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public static implicit operator Attribute (int v) => new Attribute (v);
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/// <summary>
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- /// Creates an <see cref="Attribute"/> from the specified foreground and background.
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+ /// Creates an <see cref="Attribute"/> from the specified foreground and background colors.
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/// </summary>
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- /// <returns>The make.</returns>
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+ /// <remarks>
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+ /// If a <see cref="ConsoleDriver"/> has not been loaded (<c>Application.Driver == null</c>) this
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+ /// method will return an attribute with <see cref="Initialized"/> set to <see langword="false"/>.
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+ /// </remarks>
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+ /// <returns>The new attribute.</returns>
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/// <param name="foreground">Foreground color to use.</param>
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/// <param name="background">Background color to use.</param>
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public static Attribute Make (Color foreground, Color background)
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{
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- if (Application.Driver == null)
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- throw new InvalidOperationException ("The Application has not been initialized");
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+ if (Application.Driver == null) {
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+ // Create the attribute, but show it's not been initialized
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+ var a = new Attribute (-1, foreground, background);
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+ a.Initialized = false;
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+ return a;
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+ }
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return Application.Driver.MakeAttribute (foreground, background);
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}
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@@ -194,45 +297,114 @@ namespace Terminal.Gui {
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throw new InvalidOperationException ("The Application has not been initialized");
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return Application.Driver.GetAttribute ();
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}
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+
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+ /// <summary>
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+ /// If <see langword="true"/> the attribute has been initialzed by a <see cref="ConsoleDriver"/> and
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+ /// thus has <see cref="Value"/> that is valid for that driver. If <see langword="false"/> the <see cref="Foreground"/>
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+ /// and <see cref="Background"/> colors may have been set (see <see cref="Color.Invalid"/>) but
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+ /// the attribute has not been mapped to a <see cref="ConsoleDriver"/> specific color value.
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+ /// </summary>
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+ /// <remarks>
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+ /// Attributes that have not been initialized must eventually be initialized before being passed to a driver.
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+ /// </remarks>
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+ public bool Initialized { get; internal set; }
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+
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+ /// <summary>
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+ /// Returns <see langword="true"/> if the Atrribute is valid (both foreground and background have valid color values).
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+ /// </summary>
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+ /// <returns></returns>
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+ public bool HasValidColors {
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+ get {
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+ return Foreground != Color.Invalid && Background != Color.Invalid;
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+ }
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+ }
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}
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/// <summary>
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- /// Color scheme definitions, they cover some common scenarios and are used
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- /// typically in containers such as <see cref="Window"/> and <see cref="FrameView"/> to set the scheme that is used by all the
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- /// views contained inside.
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+ /// Defines the color <see cref="Attribute"/>s for common visible elements in a <see cref="View"/>.
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+ /// Containers such as <see cref="Window"/> and <see cref="FrameView"/> use <see cref="ColorScheme"/> to determine
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+ /// the colors used by sub-views.
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/// </summary>
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+ /// <remarks>
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+ /// See also: <see cref="Colors.ColorSchemes"/>.
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+ /// </remarks>
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public class ColorScheme : IEquatable<ColorScheme> {
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- Attribute _normal;
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- Attribute _focus;
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- Attribute _hotNormal;
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- Attribute _hotFocus;
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- Attribute _disabled;
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- internal string caller = "";
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+ Attribute _normal = new Attribute(Color.White, Color.Black);
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+ Attribute _focus = new Attribute (Color.White, Color.Black);
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+ Attribute _hotNormal = new Attribute (Color.White, Color.Black);
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+ Attribute _hotFocus = new Attribute (Color.White, Color.Black);
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+ Attribute _disabled = new Attribute (Color.White, Color.Black);
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/// <summary>
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- /// The default color for text, when the view is not focused.
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+ /// Used by <see cref="Colors.SetColorScheme(ColorScheme, string)"/> and <see cref="Colors.GetColorScheme(string)"/> to track which ColorScheme
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+ /// is being accessed.
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/// </summary>
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- public Attribute Normal { get { return _normal; } set { _normal = value; } }
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+ internal string schemeBeingSet = "";
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/// <summary>
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- /// The color for text when the view has the focus.
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+ /// The foreground and background color for text when the view is not focused, hot, or disabled.
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/// </summary>
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- public Attribute Focus { get { return _focus; } set { _focus = value; } }
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+ public Attribute Normal {
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+ get { return _normal; }
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+ set {
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+ if (!value.HasValidColors) {
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+ return;
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+ }
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+ _normal = value;
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+ }
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+ }
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/// <summary>
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- /// The color for the hotkey when a view is not focused
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+ /// The foreground and background color for text when the view has the focus.
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/// </summary>
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- public Attribute HotNormal { get { return _hotNormal; } set { _hotNormal = value; } }
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+ public Attribute Focus {
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+ get { return _focus; }
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+ set {
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+ if (!value.HasValidColors) {
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+ return;
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+ }
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+ _focus = value;
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+ }
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+ }
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/// <summary>
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- /// The color for the hotkey when the view is focused.
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+ /// The foreground and background color for text when the view is highlighted (hot).
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/// </summary>
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- public Attribute HotFocus { get { return _hotFocus; } set { _hotFocus = value; } }
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+ public Attribute HotNormal {
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+ get { return _hotNormal; }
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+ set {
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+ if (!value.HasValidColors) {
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+ return;
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+ }
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+ _hotNormal = value;
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+ }
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+ }
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+
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+ /// <summary>
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+ /// The foreground and background color for text when the view is highlighted (hot) and has focus.
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+ /// </summary>
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+ public Attribute HotFocus {
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+ get { return _hotFocus; }
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+ set {
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+ if (!value.HasValidColors) {
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+ return;
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+ }
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+ _hotFocus = value;
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+ }
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+ }
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/// <summary>
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- /// The default color for text, when the view is disabled.
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+ /// The default foreground and background color for text, when the view is disabled.
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/// </summary>
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- public Attribute Disabled { get { return _disabled; } set { _disabled = value; } }
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+ public Attribute Disabled {
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+ get { return _disabled; }
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+ set {
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+ if (!value.HasValidColors) {
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+ return;
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+ }
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+ _disabled = value;
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+ }
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+ }
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/// <summary>
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/// Compares two <see cref="ColorScheme"/> objects for equality.
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@@ -295,20 +467,67 @@ namespace Terminal.Gui {
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{
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return !(left == right);
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}
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+
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+ internal void Initialize ()
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+ {
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+ // If the new scheme was created before a driver was loaded, we need to re-make
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+ // the attributes
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+ if (!_normal.Initialized) {
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+ _normal = new Attribute (_normal.Foreground, _normal.Background);
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+ }
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+ if (!_focus.Initialized) {
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+ _focus = new Attribute (_focus.Foreground, _focus.Background);
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+ }
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+ if (!_hotNormal.Initialized) {
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+ _hotNormal = new Attribute (_hotNormal.Foreground, _hotNormal.Background);
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+ }
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+ if (!_hotFocus.Initialized) {
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+ _hotFocus = new Attribute (_hotFocus.Foreground, _hotFocus.Background);
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+ }
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+ if (!_disabled.Initialized) {
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+ _disabled = new Attribute (_disabled.Foreground, _disabled.Background);
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+ }
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+ }
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}
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/// <summary>
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/// The default <see cref="ColorScheme"/>s for the application.
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/// </summary>
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+ /// <remarks>
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+ /// This property can be set in a Theme to change the default <see cref="Colors"/> for the application.
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+ /// </remarks>
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public static class Colors {
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+ private class SchemeNameComparerIgnoreCase : IEqualityComparer<string> {
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+ public bool Equals (string x, string y)
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+ {
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+ if (x != null && y != null) {
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+ return x.ToLowerInvariant () == y.ToLowerInvariant ();
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+ }
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+ return false;
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+ }
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+
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+ public int GetHashCode (string obj)
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+ {
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+ return obj.ToLowerInvariant ().GetHashCode ();
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+ }
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+ }
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+
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static Colors ()
|
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+ {
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+ ColorSchemes = Create ();
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+ }
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+
|
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+ /// <summary>
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+ /// Creates a new dictionary of new <see cref="ColorScheme"/> objects.
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+ /// </summary>
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+ public static Dictionary<string, ColorScheme> Create ()
|
|
|
{
|
|
|
// Use reflection to dynamically create the default set of ColorSchemes from the list defined
|
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|
// by the class.
|
|
|
- ColorSchemes = typeof (Colors).GetProperties ()
|
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|
+ return typeof (Colors).GetProperties ()
|
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|
.Where (p => p.PropertyType == typeof (ColorScheme))
|
|
|
- .Select (p => new KeyValuePair<string, ColorScheme> (p.Name, new ColorScheme ())) // (ColorScheme)p.GetValue (p)))
|
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|
- .ToDictionary (t => t.Key, t => t.Value);
|
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|
+ .Select (p => new KeyValuePair<string, ColorScheme> (p.Name, new ColorScheme()))
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|
|
+ .ToDictionary (t => t.Key, t => t.Value, comparer: new SchemeNameComparerIgnoreCase ());
|
|
|
}
|
|
|
|
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|
/// <summary>
|
|
|
@@ -361,21 +580,21 @@ namespace Terminal.Gui {
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|
/// </remarks>
|
|
|
public static ColorScheme Error { get => GetColorScheme (); set => SetColorScheme (value); }
|
|
|
|
|
|
- static ColorScheme GetColorScheme ([CallerMemberName] string callerMemberName = null)
|
|
|
+ static ColorScheme GetColorScheme ([CallerMemberName] string schemeBeingSet = null)
|
|
|
{
|
|
|
- return ColorSchemes [callerMemberName];
|
|
|
+ return ColorSchemes [schemeBeingSet];
|
|
|
}
|
|
|
|
|
|
- static void SetColorScheme (ColorScheme colorScheme, [CallerMemberName] string callerMemberName = null)
|
|
|
+ static void SetColorScheme (ColorScheme colorScheme, [CallerMemberName] string schemeBeingSet = null)
|
|
|
{
|
|
|
- ColorSchemes [callerMemberName] = colorScheme;
|
|
|
- colorScheme.caller = callerMemberName;
|
|
|
+ ColorSchemes [schemeBeingSet] = colorScheme;
|
|
|
+ colorScheme.schemeBeingSet = schemeBeingSet;
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// Provides the defined <see cref="ColorScheme"/>s.
|
|
|
/// </summary>
|
|
|
- public static Dictionary<string, ColorScheme> ColorSchemes { get; }
|
|
|
+ public static Dictionary<string, ColorScheme> ColorSchemes { get; private set; }
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
@@ -659,13 +878,35 @@ namespace Terminal.Gui {
|
|
|
public abstract void UpdateScreen ();
|
|
|
|
|
|
/// <summary>
|
|
|
- /// Selects the specified attribute as the attribute to use for future calls to AddRune, AddString.
|
|
|
+ /// The current attribute the driver is using.
|
|
|
/// </summary>
|
|
|
+ public virtual Attribute CurrentAttribute {
|
|
|
+ get => currentAttribute;
|
|
|
+ set {
|
|
|
+ if (!value.Initialized && value.HasValidColors && Application.Driver != null) {
|
|
|
+ CurrentAttribute = Application.Driver.MakeAttribute (value.Foreground, value.Background);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ if (!value.Initialized) Debug.WriteLine ("ConsoleDriver.CurrentAttribute: Attributes must be initialized before use.");
|
|
|
+
|
|
|
+ currentAttribute = value;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Selects the specified attribute as the attribute to use for future calls to AddRune and AddString.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// Implementations should call <c>base.SetAttribute(c)</c>.
|
|
|
+ /// </remarks>
|
|
|
/// <param name="c">C.</param>
|
|
|
- public abstract void SetAttribute (Attribute c);
|
|
|
+ public virtual void SetAttribute (Attribute c)
|
|
|
+ {
|
|
|
+ CurrentAttribute = c;
|
|
|
+ }
|
|
|
|
|
|
/// <summary>
|
|
|
- /// Set Colors from limit sets of colors.
|
|
|
+ /// Set Colors from limit sets of colors. Not implemented by any driver: See Issue #2300.
|
|
|
/// </summary>
|
|
|
/// <param name="foreground">Foreground.</param>
|
|
|
/// <param name="background">Background.</param>
|
|
|
@@ -675,7 +916,7 @@ namespace Terminal.Gui {
|
|
|
// that independently with the R, G, B values.
|
|
|
/// <summary>
|
|
|
/// Advanced uses - set colors to any pre-set pairs, you would need to init_color
|
|
|
- /// that independently with the R, G, B values.
|
|
|
+ /// that independently with the R, G, B values. Not implemented by any driver: See Issue #2300.
|
|
|
/// </summary>
|
|
|
/// <param name="foregroundColorId">Foreground color identifier.</param>
|
|
|
/// <param name="backgroundColorId">Background color identifier.</param>
|
|
|
@@ -998,12 +1239,13 @@ namespace Terminal.Gui {
|
|
|
public abstract void StopReportingMouseMoves ();
|
|
|
|
|
|
/// <summary>
|
|
|
- /// Disables the cooked event processing from the mouse driver. At startup, it is assumed mouse events are cooked.
|
|
|
+ /// Disables the cooked event processing from the mouse driver.
|
|
|
+ /// At startup, it is assumed mouse events are cooked. Not implemented by any driver: See Issue #2300.
|
|
|
/// </summary>
|
|
|
public abstract void UncookMouse ();
|
|
|
|
|
|
/// <summary>
|
|
|
- /// Enables the cooked event processing from the mouse driver
|
|
|
+ /// Enables the cooked event processing from the mouse driver. Not implemented by any driver: See Issue #2300.
|
|
|
/// </summary>
|
|
|
public abstract void CookMouse ();
|
|
|
|
|
|
@@ -1196,6 +1438,7 @@ namespace Terminal.Gui {
|
|
|
/// Lower right rounded corner
|
|
|
/// </summary>
|
|
|
public Rune LRRCorner = '\u256f';
|
|
|
+ private Attribute currentAttribute;
|
|
|
|
|
|
/// <summary>
|
|
|
/// Make the attribute for the foreground and background colors.
|
|
|
@@ -1209,7 +1452,7 @@ namespace Terminal.Gui {
|
|
|
/// Gets the current <see cref="Attribute"/>.
|
|
|
/// </summary>
|
|
|
/// <returns>The current attribute.</returns>
|
|
|
- public abstract Attribute GetAttribute ();
|
|
|
+ public Attribute GetAttribute () => CurrentAttribute;
|
|
|
|
|
|
/// <summary>
|
|
|
/// Make the <see cref="Colors"/> for the <see cref="ColorScheme"/>.
|
|
|
@@ -1220,21 +1463,24 @@ namespace Terminal.Gui {
|
|
|
public abstract Attribute MakeColor (Color foreground, Color background);
|
|
|
|
|
|
/// <summary>
|
|
|
- /// Create all <see cref="Colors"/> with the <see cref="ColorScheme"/> for the console driver.
|
|
|
+ /// Ensures all <see cref="Attribute"/>s in <see cref="Colors.ColorSchemes"/> are correclty
|
|
|
+ /// initalized by the driver.
|
|
|
/// </summary>
|
|
|
- /// <param name="hasColors">Flag indicating if colors are supported.</param>
|
|
|
- public void CreateColors (bool hasColors = true)
|
|
|
+ /// <param name="supportsColors">Flag indicating if colors are supported (not used).</param>
|
|
|
+ public void InitalizeColorSchemes (bool supportsColors = true)
|
|
|
{
|
|
|
- Colors.TopLevel = new ColorScheme ();
|
|
|
- Colors.Base = new ColorScheme ();
|
|
|
- Colors.Dialog = new ColorScheme ();
|
|
|
- Colors.Menu = new ColorScheme ();
|
|
|
- Colors.Error = new ColorScheme ();
|
|
|
+ // Ensure all Attributes are initlaized by the driver
|
|
|
+ foreach (var s in Colors.ColorSchemes) {
|
|
|
+ s.Value.Initialize ();
|
|
|
+ }
|
|
|
|
|
|
- if (!hasColors) {
|
|
|
+ if (!supportsColors) {
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
+
|
|
|
+ // Define the default color theme only if the user has not defined one.
|
|
|
+
|
|
|
Colors.TopLevel.Normal = MakeColor (Color.BrightGreen, Color.Black);
|
|
|
Colors.TopLevel.Focus = MakeColor (Color.White, Color.Cyan);
|
|
|
Colors.TopLevel.HotNormal = MakeColor (Color.Brown, Color.Black);
|
Tig