mirror of
https://github.com/AlexMacocian/MonoGame.Extended.git
synced 2026-07-24 12:06:37 +00:00
dropped the gui prefix on most of the gui stuff
This commit is contained in:
Dylan Wilson
@@ -0,0 +1,285 @@
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using System.Linq;
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using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Input;
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using MonoGame.Extended.Input.InputListeners;
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using System.Collections.Generic;
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using MonoGame.Extended.BitmapFonts;
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namespace MonoGame.Extended.Gui.Controls
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{
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public class TextBox : Control
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{
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public TextBox(string text = null)
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{
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Text = text ?? string.Empty;
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}
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public int SelectionStart { get; set; }
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public char? PasswordCharacter { get; set; }
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public Thickness Padding { get; set; }
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protected override void OnTextChanged()
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{
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if (!string.IsNullOrEmpty(Text) && SelectionStart > Text.Length)
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SelectionStart = Text.Length;
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base.OnTextChanged();
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}
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protected override Size2 CalculateDesiredSize(IGuiContext context, Size2 availableSize)
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{
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var font = Font ?? context.DefaultFont;
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return new Size2(Width + Padding.Left + Padding.Right, (Height <= 0.0f ? font.LineHeight + 2 : Height) + Padding.Top + Padding.Bottom);
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}
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public override bool OnPointerDown(IGuiContext context, PointerEventArgs args)
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{
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SelectionStart = FindNearestGlyphIndex(context, args.Position);
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_isCaretVisible = true;
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_selectionIndexes.Clear();
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_selectionIndexes.Push(SelectionStart);
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_startSelectionBox = Text.Length > 0;
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return base.OnPointerDown(context, args);
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}
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public override bool OnPointerMove(IGuiContext context, PointerEventArgs args)
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{
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if (_startSelectionBox)
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{
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var selection = FindNearestGlyphIndex(context, args.Position);
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if (selection != _selectionIndexes.Peek())
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{
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if (_selectionIndexes.Count == 1)
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{
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_selectionIndexes.Push(selection);
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}
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else if (_selectionIndexes.Last() < _selectionIndexes.Peek())
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{
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if (selection > _selectionIndexes.Peek()) _selectionIndexes.Pop();
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else _selectionIndexes.Push(selection);
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}
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else
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{
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if (selection < _selectionIndexes.Peek()) _selectionIndexes.Pop();
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else _selectionIndexes.Push(selection);
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}
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SelectionStart = selection;
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}
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}
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return base.OnPointerMove(context, args);
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}
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public override bool OnPointerLeave(IGuiContext context, PointerEventArgs args)
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{
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_startSelectionBox = false;
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return base.OnPointerLeave(context, args);
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}
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public override bool OnPointerUp(IGuiContext context, PointerEventArgs args)
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{
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_startSelectionBox = false;
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return base.OnPointerUp(context, args);
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}
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private int FindNearestGlyphIndex(IGuiContext context, Point position)
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{
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var font = Font ?? context.DefaultFont;
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var textInfo = GetTextInfo(context, Text, BoundingRectangle, HorizontalAlignment.Centre, VerticalAlignment.Centre);
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var i = 0;
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foreach (var glyph in font.GetGlyphs(textInfo.Text, textInfo.Position))
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{
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var fontRegionWidth = glyph.FontRegion?.Width ?? 0;
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var glyphMiddle = (int)(glyph.Position.X + fontRegionWidth * 0.5f);
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if (position.X >= glyphMiddle)
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{
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i++;
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continue;
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}
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return i;
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}
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return i;
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}
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public override bool OnKeyPressed(IGuiContext context, KeyboardEventArgs args)
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{
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switch (args.Key)
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{
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case Keys.Tab:
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case Keys.Enter:
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return true;
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case Keys.Back:
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if (Text.Length > 0)
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{
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if (SelectionStart > 0 && _selectionIndexes.Count <= 1)
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{
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SelectionStart--;
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Text = Text.Remove(SelectionStart, 1);
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}
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else
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{
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var start = MathHelper.Min(_selectionIndexes.Last(), _selectionIndexes.Peek());
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var end = MathHelper.Max(_selectionIndexes.Last(), _selectionIndexes.Peek());
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Text = Text.Remove(start, end - start);
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_selectionIndexes.Clear();
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}
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}
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break;
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case Keys.Delete:
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if (SelectionStart < Text.Length && _selectionIndexes.Count <= 1)
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{
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Text = Text.Remove(SelectionStart, 1);
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}
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else if (_selectionIndexes.Count > 1)
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{
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var start = MathHelper.Min(_selectionIndexes.Last(), _selectionIndexes.Peek());
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var end = MathHelper.Max(_selectionIndexes.Last(), _selectionIndexes.Peek());
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Text = Text.Remove(start, end - start);
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_selectionIndexes.Clear();
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}
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break;
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case Keys.Left:
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if (SelectionStart > 0)
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{
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if (_selectionIndexes.Count > 1)
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{
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if (_selectionIndexes.Last() < SelectionStart) SelectionStart = _selectionIndexes.Last();
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_selectionIndexes.Clear();
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}
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else
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{
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SelectionStart--;
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}
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}
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break;
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case Keys.Right:
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if (SelectionStart < Text.Length)
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{
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if (_selectionIndexes.Count > 1)
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{
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if (_selectionIndexes.Last() > SelectionStart) SelectionStart = _selectionIndexes.Last();
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_selectionIndexes.Clear();
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}
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else
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{
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SelectionStart++;
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}
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}
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break;
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case Keys.Home:
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SelectionStart = 0;
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_selectionIndexes.Clear();
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break;
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case Keys.End:
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SelectionStart = Text.Length;
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_selectionIndexes.Clear();
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break;
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default:
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if (args.Character != null)
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{
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if (_selectionIndexes.Count > 1)
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{
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var start = MathHelper.Min(_selectionIndexes.Last(), _selectionIndexes.Peek());
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var end = MathHelper.Max(_selectionIndexes.Last(), _selectionIndexes.Peek());
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Text = Text.Remove(start, end - start);
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_selectionIndexes.Clear();
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}
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Text = Text.Insert(SelectionStart, args.Character.ToString());
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SelectionStart++;
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}
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break;
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}
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_isCaretVisible = true;
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return base.OnKeyPressed(context, args);
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}
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private const float _caretBlinkRate = 0.53f;
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private float _nextCaretBlink = _caretBlinkRate;
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private bool _isCaretVisible = true;
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private bool _startSelectionBox = false;
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private Stack<int> _selectionIndexes = new Stack<int>();
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protected override void DrawForeground(IGuiContext context, IGuiRenderer renderer, float deltaSeconds, TextInfo textInfo)
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{
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if (PasswordCharacter.HasValue)
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textInfo = GetTextInfo(context, new string(PasswordCharacter.Value, textInfo.Text.Length), BoundingRectangle, HorizontalAlignment.Centre, VerticalAlignment.Centre);
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base.DrawForeground(context, renderer, deltaSeconds, textInfo);
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if (IsFocused)
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{
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var caretRectangle = GetCaretRectangle(textInfo, SelectionStart);
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if (_isCaretVisible)
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renderer.DrawRectangle((Rectangle)caretRectangle, TextColor);
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_nextCaretBlink -= deltaSeconds;
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if (_nextCaretBlink <= 0)
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{
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_isCaretVisible = !_isCaretVisible;
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_nextCaretBlink = _caretBlinkRate;
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}
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if (_selectionIndexes.Count > 1)
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{
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var start = 0;
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var end = 0;
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var point = Point2.Zero;
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if (_selectionIndexes.Last() > _selectionIndexes.Peek())
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{
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start = _selectionIndexes.Peek();
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end = _selectionIndexes.Last();
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point = caretRectangle.Position;
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}
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else
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{
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start = _selectionIndexes.Last();
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end = _selectionIndexes.Peek();
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point = GetCaretRectangle(textInfo, start).Position;
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}
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var selectionRectangle = textInfo.Font.GetStringRectangle(textInfo.Text.Substring(start, end - start), point);
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renderer.FillRectangle((Rectangle)selectionRectangle, Color.Black * 0.25f);
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}
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}
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}
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protected override string CreateBoxText(string text, BitmapFont font, float width)
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{
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return text;
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}
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private RectangleF GetCaretRectangle(TextInfo textInfo, int index)
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{
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var caretRectangle = textInfo.Font.GetStringRectangle(textInfo.Text.Substring(0, index), textInfo.Position);
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// TODO: Finish the caret position stuff when it's outside the clipping rectangle
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if (caretRectangle.Right > ClippingRectangle.Right)
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textInfo.Position.X -= caretRectangle.Right - ClippingRectangle.Right;
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caretRectangle.X = caretRectangle.Right < ClippingRectangle.Right ? caretRectangle.Right : ClippingRectangle.Right;
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caretRectangle.Width = 1;
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if (caretRectangle.Left < ClippingRectangle.Left)
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{
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textInfo.Position.X += ClippingRectangle.Left - caretRectangle.Left;
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caretRectangle.X = ClippingRectangle.Left;
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}
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return caretRectangle;
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}
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}
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}
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