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GoaLitiuM
421
Source/Game/Cabrito/Console/ConsoleTextBoxBase.cs
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421
Source/Game/Cabrito/Console/ConsoleTextBoxBase.cs
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using FlaxEditor;
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using FlaxEngine;
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using FlaxEngine.GUI;
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namespace Cabrito
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{
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// Mostly based on TextBox
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public class ConsoleTextBoxBase : TextBoxBase
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{
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protected TextLayoutOptions _layout;
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/// <summary>
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/// Gets or sets the text wrapping within the control bounds.
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/// </summary>
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[EditorDisplay("Style"), EditorOrder(2000), Tooltip("The text wrapping within the control bounds.")]
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public TextWrapping Wrapping
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{
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get => _layout.TextWrapping;
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set => _layout.TextWrapping = value;
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}
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[EditorDisplay("Style"), EditorOrder(2000), Tooltip("The line spacing of the text.")]
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public float LineSpacing
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{
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get => _layout.BaseLinesGapScale;
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set
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{
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// Round to nearest pixel in order to avoid uneven line heights
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float newValue = value;
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var font = Font.GetFont();
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if (font != null)
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{
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float actualHeight = font.Height * Scale.Y;
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newValue = Mathf.Round(newValue * actualHeight) / actualHeight;
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}
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_layout.BaseLinesGapScale = newValue;
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OnTextChanged();
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}
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}
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/// <summary>
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/// Gets or sets the font.
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/// </summary>
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[EditorDisplay("Style"), EditorOrder(2000)]
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public FontReference Font { get; set; }
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/// <summary>
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/// Gets or sets the color of the text.
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/// </summary>
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[EditorDisplay("Style"), EditorOrder(2000), Tooltip("The color of the text.")]
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public Color TextColor { get; set; }
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/// <summary>
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/// Gets or sets the color of the selection (Transparent if not used).
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/// </summary>
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[EditorDisplay("Style"), EditorOrder(2000), Tooltip("The color of the selection (Transparent if not used).")]
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public Color SelectionColor { get; set; }
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[HideInEditor]
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public virtual string TextPrefix { get; set; } = "";
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[HideInEditor]
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public override string Text => _text;
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public ConsoleTextBoxBase() : base()
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{
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}
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public ConsoleTextBoxBase(float x, float y, float width, float height) : base(false, x, y, width)
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{
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Height = height;
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IsReadOnly = false;
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CaretColor = new Color(1f, 1f, 1f, 1f);
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AutoFocus = true;
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_layout = TextLayoutOptions.Default;
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_layout.VerticalAlignment = IsMultiline ? TextAlignment.Near : TextAlignment.Center;
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_layout.TextWrapping = TextWrapping.NoWrap;
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_layout.Bounds = new Rectangle(DefaultMargin, 1, Width - 2 * DefaultMargin, Height - 2);
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var style = Style.Current;
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Font = new FontReference(style.FontMedium);
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TextColor = style.Foreground;
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SelectionColor = style.BackgroundSelected;
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}
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/*protected override void SetText(string value)
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{
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// Prevent from null problems
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if (value == null)
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value = string.Empty;
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// Filter text
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if (value.IndexOf('\r') != -1)
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value = value.Replace("\r", "");
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// Clamp length
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if (value.Length > MaxLength)
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value = value.Substring(0, MaxLength);
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// Ensure to use only single line
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if (_isMultiline == false && value.Length > 0)
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{
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// Extract only the first line
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value = value.GetLines()[0];
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}
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if (Text != value)
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{
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Deselect();
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ResetViewOffset();
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Text = value;
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OnTextChanged();
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}
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}*/
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public int GetFontHeight()
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{
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var font = Font.GetFont();
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if (font == null)
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return (int)Height;
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return (int)Mathf.Round(LineSpacing * font.Height * Scale.Y);
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}
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private float GetRealLineSpacing()
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{
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return GetFontHeight() * (1.0f - LineSpacing);
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}
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public override void Clear()
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{
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// Can't clear the text while user is editing it...
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var oldEditing = _isEditing;
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_isEditing = false;
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base.Clear();
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_isEditing = oldEditing;
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}
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public override void ResetViewOffset()
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{
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TargetViewOffset = new Vector2(0, GetRealLineSpacing());
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}
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public void ScrollToEnd()
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{
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float maxY = TextSize.Y - Height;
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float spacing = GetRealLineSpacing();
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maxY += spacing;
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TargetViewOffset = new Vector2(0, Math.Max(0, maxY));
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}
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public override void ScrollToCaret()
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{
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if (Text.Length == 0)
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return;
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Rectangle caretBounds = CaretBounds;
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float maxY = TextSize.Y - Height;
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float spacing = GetRealLineSpacing();
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maxY += spacing;
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Vector2 newLocation = CaretBounds.Location;
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newLocation.Y += spacing;
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TargetViewOffset = Vector2.Clamp(newLocation, new Vector2(0, spacing), new Vector2(_targetViewOffset.X, maxY));
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}
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const bool smoothScrolling = false;
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public override bool OnMouseWheel(Vector2 location, float delta)
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{
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if (!IsMultiline || Text.Length == 0)
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return false;
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if (!smoothScrolling)
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delta = GetFontHeight() * Math.Sign(delta) * 3;
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else
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delta *= 30;
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float maxY = TextSize.Y - Height;
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float offset = GetRealLineSpacing();
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maxY += offset;
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TargetViewOffset = Vector2.Clamp(_targetViewOffset - new Vector2(0, delta), new Vector2(0, offset), new Vector2(_targetViewOffset.X, maxY));
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return true;
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}
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public override Vector2 GetTextSize()
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{
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var font = Font.GetFont();
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if (font == null)
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return Vector2.Zero;
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return font.MeasureText(Text, ref _layout);
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}
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public override Vector2 GetCharPosition(int index, out float height)
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{
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var font = Font.GetFont();
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if (font == null)
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{
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height = Height;
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return Vector2.Zero;
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}
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height = GetFontHeight();
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return font.GetCharPosition(Text, index, ref _layout);
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}
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public override int HitTestText(Vector2 location)
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{
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var font = Font.GetFont();
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if (font == null)
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return 0;
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if (TextPrefix != "")
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{
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var prefixSize = font.MeasureText(TextPrefix);
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location.X -= prefixSize.X;
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}
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return font.HitTestText(Text, location, ref _layout);
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}
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protected override void OnIsMultilineChanged()
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{
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base.OnIsMultilineChanged();
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_layout.VerticalAlignment = IsMultiline ? TextAlignment.Near : TextAlignment.Center;
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}
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public override bool OnKeyDown(KeyboardKeys key)
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{
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bool shiftDown = Root.GetKey(KeyboardKeys.Shift);
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bool ctrlDown = Root.GetKey(KeyboardKeys.Control);
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if (shiftDown && key == KeyboardKeys.Delete)
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Cut();
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else if (ctrlDown && key == KeyboardKeys.Insert)
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Copy();
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else if (shiftDown && key == KeyboardKeys.Insert)
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Paste();
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if (shiftDown && key == KeyboardKeys.Home)
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{
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if (!IsReadOnly)
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SetSelection(_selectionStart, 0);
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return true;
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}
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else if (shiftDown && key == KeyboardKeys.End)
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{
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if (!IsReadOnly)
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SetSelection(_selectionStart, TextLength);
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return true;
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}
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return base.OnKeyDown(key);
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}
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bool doubleClicked = false;
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System.Diagnostics.Stopwatch lastDoubleClick = new System.Diagnostics.Stopwatch();
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Vector2 lastDoubleClickLocation = new Vector2(0, 0);
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public override bool OnMouseDown(Vector2 location, MouseButton button)
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{
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if (doubleClicked && lastDoubleClick.Elapsed.TotalSeconds < 0.5 && location == lastDoubleClickLocation) // Windows defaults to 500ms window
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{
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doubleClicked = false;
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if (OnMouseTripleClick(location, button))
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return true;
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}
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return base.OnMouseDown(location, button);
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}
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public override bool OnMouseDoubleClick(Vector2 location, MouseButton button)
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{
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doubleClicked = true;
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lastDoubleClick.Restart();
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lastDoubleClickLocation = location;
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return base.OnMouseDoubleClick(location, button);
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}
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public bool OnMouseTripleClick(Vector2 location, MouseButton button)
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{
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if (!IsMultiline)
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SelectAll();
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else
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{
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// TODO: select the line
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SelectAll();
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}
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return true;
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}
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protected override void OnSizeChanged()
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{
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base.OnSizeChanged();
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_layout.Bounds = TextRectangle;
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}
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public override void Draw()
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{
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// Cache data
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var rect = new Rectangle(Vector2.Zero, Size);
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var font = Font.GetFont();
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if (!font)
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return;
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// Background
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Color backColor = BackgroundColor;
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if (IsMouseOver)
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backColor = BackgroundSelectedColor;
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if (backColor.A > 0.0f)
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Render2D.FillRectangle(rect, backColor);
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Color borderColor = IsFocused ? BorderSelectedColor : BorderColor;
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if (borderColor.A > 0.0f)
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Render2D.DrawRectangle(rect, borderColor);
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//string text = TextPrefix + Text;
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string text = TextPrefix + Text;
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if (text.Length == 0)
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return;
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// Apply view offset and clip mask
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Render2D.PushClip(TextClipRectangle);
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bool useViewOffset = !_viewOffset.IsZero;
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if (useViewOffset)
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Render2D.PushTransform(Matrix3x3.Translation2D(-_viewOffset));
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// Check if any text is selected to draw selection
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if (HasSelection)
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{
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Vector2 leftEdge = font.GetCharPosition(text, SelectionLeft + TextPrefix.Length, ref _layout);
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Vector2 rightEdge = font.GetCharPosition(text, SelectionRight + TextPrefix.Length, ref _layout);
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float fontHeight = GetFontHeight();
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float spacing = GetRealLineSpacing();
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// Draw selection background
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float alpha = Mathf.Min(1.0f, Mathf.Cos(_animateTime * BackgroundSelectedFlashSpeed) * 0.5f + 1.3f);
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alpha = alpha * alpha;
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Color selectionColor = SelectionColor * alpha;
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int selectedLinesCount = 1 + Mathf.FloorToInt((rightEdge.Y - leftEdge.Y) / fontHeight);
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if (selectedLinesCount == 1) // Selected is part of single line
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{
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Rectangle r1 = new Rectangle(leftEdge.X, leftEdge.Y, rightEdge.X - leftEdge.X, fontHeight);
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Render2D.FillRectangle(r1, selectionColor);
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}
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else // Selected is more than one line
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{
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float leftMargin = _layout.Bounds.Location.X;
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Rectangle r1 = new Rectangle(leftEdge.X, leftEdge.Y, 1000000000, fontHeight);
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Render2D.FillRectangle(r1, selectionColor);
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for (int i = 3; i <= selectedLinesCount; i++)
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{
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leftEdge.Y += fontHeight;
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Rectangle r = new Rectangle(leftMargin, leftEdge.Y, 1000000000, fontHeight);
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Render2D.FillRectangle(r, selectionColor);
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}
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Rectangle r2 = new Rectangle(leftMargin, rightEdge.Y, rightEdge.X - leftMargin, fontHeight);
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Render2D.FillRectangle(r2, selectionColor);
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}
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}
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Render2D.DrawText(font, text, TextColor, ref _layout);
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if (CaretPosition > -1)
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{
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var prefixSize = TextPrefix != "" ? font.MeasureText(TextPrefix) : new Vector2();
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var caretBounds = CaretBounds;
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caretBounds.X += prefixSize.X;
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float alpha = Mathf.Saturate(Mathf.Cos(_animateTime * CaretFlashSpeed) * 0.5f + 0.7f);
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alpha = alpha * alpha * alpha * alpha * alpha * alpha;
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Render2D.FillRectangle(caretBounds, CaretColor * alpha);
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}
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// Restore rendering state
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if (useViewOffset)
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Render2D.PopTransform();
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Render2D.PopClip();
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}
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public override void Paste()
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{
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if (IsReadOnly)
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return;
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var clipboardText = Clipboard.Text;
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// Handle newlines in clipboard text
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if (!string.IsNullOrEmpty(clipboardText))
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{
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// TODO: probably better to just split these lines and parse each line separately
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clipboardText = clipboardText.Replace("\r\n", "");
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clipboardText = clipboardText.Replace("\n", "");
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}
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if (!string.IsNullOrEmpty(clipboardText))
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{
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var right = SelectionRight;
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Insert(clipboardText);
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SetSelection(Mathf.Max(right, 0) + clipboardText.Length);
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}
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}
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}
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}
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