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1f096c38dc3ea9bdca763126fd45e4da9b2386b1
maui-linux/Views/SkiaEditor.cs
Dave Friedel 1f096c38dc Update with recovered code from VM binaries (Jan 1) 
Recovered from decompiled OpenMaui.Controls.Linux.dll:
- SkiaShell.cs: FlyoutHeader, FlyoutFooter, scroll support (918 -> 1325 lines)
- X11Window.cs: Cursor support (XCreateFontCursor, XDefineCursor)
- All handlers with dark mode support
- All services with latest implementations
- LinuxApplication with theme change handling
2026-01-01 06:22:48 -05:00

1106 lines
34 KiB
C#
Raw Blame History

using System;
using System.Collections.Generic;
using Microsoft.Maui.Controls;
using SkiaSharp;
namespace Microsoft.Maui.Platform;
public class SkiaEditor : SkiaView
{
public static readonly BindableProperty TextProperty = BindableProperty.Create("Text", typeof(string), typeof(SkiaEditor), (object)"", (BindingMode)1, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).OnTextPropertyChanged((string)o, (string)n);
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty PlaceholderProperty = BindableProperty.Create("Placeholder", typeof(string), typeof(SkiaEditor), (object)"", (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty TextColorProperty = BindableProperty.Create("TextColor", typeof(SKColor), typeof(SkiaEditor), (object)SKColors.Black, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty PlaceholderColorProperty = BindableProperty.Create("PlaceholderColor", typeof(SKColor), typeof(SkiaEditor), (object)new SKColor((byte)128, (byte)128, (byte)128), (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty BorderColorProperty = BindableProperty.Create("BorderColor", typeof(SKColor), typeof(SkiaEditor), (object)new SKColor((byte)189, (byte)189, (byte)189), (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty SelectionColorProperty = BindableProperty.Create("SelectionColor", typeof(SKColor), typeof(SkiaEditor), (object)new SKColor((byte)33, (byte)150, (byte)243, (byte)96), (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty CursorColorProperty = BindableProperty.Create("CursorColor", typeof(SKColor), typeof(SkiaEditor), (object)new SKColor((byte)33, (byte)150, (byte)243), (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty FontFamilyProperty = BindableProperty.Create("FontFamily", typeof(string), typeof(SkiaEditor), (object)"Sans", (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).InvalidateMeasure();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty FontSizeProperty = BindableProperty.Create("FontSize", typeof(float), typeof(SkiaEditor), (object)14f, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).InvalidateMeasure();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty LineHeightProperty = BindableProperty.Create("LineHeight", typeof(float), typeof(SkiaEditor), (object)1.4f, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).InvalidateMeasure();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty CornerRadiusProperty = BindableProperty.Create("CornerRadius", typeof(float), typeof(SkiaEditor), (object)4f, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty PaddingProperty = BindableProperty.Create("Padding", typeof(float), typeof(SkiaEditor), (object)12f, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).InvalidateMeasure();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty IsReadOnlyProperty = BindableProperty.Create("IsReadOnly", typeof(bool), typeof(SkiaEditor), (object)false, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty MaxLengthProperty = BindableProperty.Create("MaxLength", typeof(int), typeof(SkiaEditor), (object)(-1), (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)null, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty AutoSizeProperty = BindableProperty.Create("AutoSize", typeof(bool), typeof(SkiaEditor), (object)false, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaEditor)(object)b).InvalidateMeasure();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
private int _cursorPosition;
private int _selectionStart = -1;
private int _selectionLength;
private float _scrollOffsetY;
private bool _cursorVisible = true;
private DateTime _lastCursorBlink = DateTime.Now;
private List<string> _lines = new List<string> { "" };
private float _wrapWidth;
private bool _isSelecting;
private DateTime _lastClickTime = DateTime.MinValue;
private float _lastClickX;
private float _lastClickY;
private const double DoubleClickThresholdMs = 400.0;
public string Text
{
get
{
return (string)((BindableObject)this).GetValue(TextProperty);
}
set
{
((BindableObject)this).SetValue(TextProperty, (object)value);
}
}
public string Placeholder
{
get
{
return (string)((BindableObject)this).GetValue(PlaceholderProperty);
}
set
{
((BindableObject)this).SetValue(PlaceholderProperty, (object)value);
}
}
public SKColor TextColor
{
get
{
//IL_000b: Unknown result type (might be due to invalid IL or missing references)
return (SKColor)((BindableObject)this).GetValue(TextColorProperty);
}
set
{
//IL_0006: Unknown result type (might be due to invalid IL or missing references)
((BindableObject)this).SetValue(TextColorProperty, (object)value);
}
}
public SKColor PlaceholderColor
{
get
{
//IL_000b: Unknown result type (might be due to invalid IL or missing references)
return (SKColor)((BindableObject)this).GetValue(PlaceholderColorProperty);
}
set
{
//IL_0006: Unknown result type (might be due to invalid IL or missing references)
((BindableObject)this).SetValue(PlaceholderColorProperty, (object)value);
}
}
public SKColor BorderColor
{
get
{
//IL_000b: Unknown result type (might be due to invalid IL or missing references)
return (SKColor)((BindableObject)this).GetValue(BorderColorProperty);
}
set
{
//IL_0006: Unknown result type (might be due to invalid IL or missing references)
((BindableObject)this).SetValue(BorderColorProperty, (object)value);
}
}
public SKColor SelectionColor
{
get
{
//IL_000b: Unknown result type (might be due to invalid IL or missing references)
return (SKColor)((BindableObject)this).GetValue(SelectionColorProperty);
}
set
{
//IL_0006: Unknown result type (might be due to invalid IL or missing references)
((BindableObject)this).SetValue(SelectionColorProperty, (object)value);
}
}
public SKColor CursorColor
{
get
{
//IL_000b: Unknown result type (might be due to invalid IL or missing references)
return (SKColor)((BindableObject)this).GetValue(CursorColorProperty);
}
set
{
//IL_0006: Unknown result type (might be due to invalid IL or missing references)
((BindableObject)this).SetValue(CursorColorProperty, (object)value);
}
}
public string FontFamily
{
get
{
return (string)((BindableObject)this).GetValue(FontFamilyProperty);
}
set
{
((BindableObject)this).SetValue(FontFamilyProperty, (object)value);
}
}
public float FontSize
{
get
{
return (float)((BindableObject)this).GetValue(FontSizeProperty);
}
set
{
((BindableObject)this).SetValue(FontSizeProperty, (object)value);
}
}
public float LineHeight
{
get
{
return (float)((BindableObject)this).GetValue(LineHeightProperty);
}
set
{
((BindableObject)this).SetValue(LineHeightProperty, (object)value);
}
}
public float CornerRadius
{
get
{
return (float)((BindableObject)this).GetValue(CornerRadiusProperty);
}
set
{
((BindableObject)this).SetValue(CornerRadiusProperty, (object)value);
}
}
public float Padding
{
get
{
return (float)((BindableObject)this).GetValue(PaddingProperty);
}
set
{
((BindableObject)this).SetValue(PaddingProperty, (object)value);
}
}
public bool IsReadOnly
{
get
{
return (bool)((BindableObject)this).GetValue(IsReadOnlyProperty);
}
set
{
((BindableObject)this).SetValue(IsReadOnlyProperty, (object)value);
}
}
public int MaxLength
{
get
{
return (int)((BindableObject)this).GetValue(MaxLengthProperty);
}
set
{
((BindableObject)this).SetValue(MaxLengthProperty, (object)value);
}
}
public bool AutoSize
{
get
{
return (bool)((BindableObject)this).GetValue(AutoSizeProperty);
}
set
{
((BindableObject)this).SetValue(AutoSizeProperty, (object)value);
}
}
public int CursorPosition
{
get
{
return _cursorPosition;
}
set
{
_cursorPosition = Math.Clamp(value, 0, Text.Length);
EnsureCursorVisible();
Invalidate();
}
}
public event EventHandler? TextChanged;
public event EventHandler? Completed;
public SkiaEditor()
{
base.IsFocusable = true;
}
private void OnTextPropertyChanged(string oldText, string newText)
{
string text = newText ?? "";
if (MaxLength > 0 && text.Length > MaxLength)
{
text = text.Substring(0, MaxLength);
((BindableObject)this).SetValue(TextProperty, (object)text);
return;
}
UpdateLines();
_cursorPosition = Math.Min(_cursorPosition, text.Length);
_scrollOffsetY = 0f;
_selectionLength = 0;
this.TextChanged?.Invoke(this, EventArgs.Empty);
Invalidate();
}
private void UpdateLines()
{
//IL_0049: Unknown result type (might be due to invalid IL or missing references)
//IL_004f: Expected O, but got Unknown
_lines.Clear();
string text = Text ?? "";
if (string.IsNullOrEmpty(text))
{
_lines.Add("");
return;
}
SKFont val = new SKFont(SKTypeface.Default, FontSize, 1f, 0f);
try
{
string[] array = text.Split('\n');
foreach (string text2 in array)
{
if (string.IsNullOrEmpty(text2))
{
_lines.Add("");
}
else if (_wrapWidth > 0f)
{
WrapParagraph(text2, val, _wrapWidth);
}
else
{
_lines.Add(text2);
}
}
if (_lines.Count == 0)
{
_lines.Add("");
}
}
finally
{
((IDisposable)val)?.Dispose();
}
}
private void WrapParagraph(string paragraph, SKFont font, float maxWidth)
{
string[] array = paragraph.Split(' ');
string text = "";
string[] array2 = array;
foreach (string text2 in array2)
{
string text3 = (string.IsNullOrEmpty(text) ? text2 : (text + " " + text2));
if (MeasureText(text3, font) > maxWidth && !string.IsNullOrEmpty(text))
{
_lines.Add(text);
text = text2;
}
else
{
text = text3;
}
}
if (!string.IsNullOrEmpty(text))
{
_lines.Add(text);
}
}
private (int line, int column) GetLineColumn(int position)
{
int num = 0;
for (int i = 0; i < _lines.Count; i++)
{
int length = _lines[i].Length;
if (num + length >= position || i == _lines.Count - 1)
{
return (line: i, column: position - num);
}
num += length + 1;
}
int item = _lines.Count - 1;
List<string> lines = _lines;
return (line: item, column: lines[lines.Count - 1].Length);
}
private int GetPosition(int line, int column)
{
int num = 0;
for (int i = 0; i < line && i < _lines.Count; i++)
{
num += _lines[i].Length + 1;
}
if (line < _lines.Count)
{
num += Math.Min(column, _lines[line].Length);
}
return Math.Min(num, Text.Length);
}
protected override void OnDraw(SKCanvas canvas, SKRect bounds)
{
//IL_007c: Unknown result type (might be due to invalid IL or missing references)
//IL_0081: Unknown result type (might be due to invalid IL or missing references)
//IL_00a1: Unknown result type (might be due to invalid IL or missing references)
//IL_0099: Unknown result type (might be due to invalid IL or missing references)
//IL_00ab: Unknown result type (might be due to invalid IL or missing references)
//IL_00b2: Unknown result type (might be due to invalid IL or missing references)
//IL_00ba: Expected O, but got Unknown
//IL_00bb: Unknown result type (might be due to invalid IL or missing references)
//IL_00c2: Unknown result type (might be due to invalid IL or missing references)
//IL_00cd: Expected O, but got Unknown
//IL_00cd: Unknown result type (might be due to invalid IL or missing references)
//IL_00d2: Unknown result type (might be due to invalid IL or missing references)
//IL_00e4: Unknown result type (might be due to invalid IL or missing references)
//IL_00dc: Unknown result type (might be due to invalid IL or missing references)
//IL_00ee: Unknown result type (might be due to invalid IL or missing references)
//IL_00f5: Unknown result type (might be due to invalid IL or missing references)
//IL_0108: Unknown result type (might be due to invalid IL or missing references)
//IL_0110: Expected O, but got Unknown
//IL_0111: Unknown result type (might be due to invalid IL or missing references)
//IL_0118: Unknown result type (might be due to invalid IL or missing references)
//IL_0123: Expected O, but got Unknown
//IL_0138: Unknown result type (might be due to invalid IL or missing references)
//IL_013e: Expected O, but got Unknown
//IL_0185: Unknown result type (might be due to invalid IL or missing references)
//IL_018a: Unknown result type (might be due to invalid IL or missing references)
//IL_0194: Unknown result type (might be due to invalid IL or missing references)
//IL_0207: Unknown result type (might be due to invalid IL or missing references)
//IL_020c: Unknown result type (might be due to invalid IL or missing references)
//IL_022c: Unknown result type (might be due to invalid IL or missing references)
//IL_0216: Unknown result type (might be due to invalid IL or missing references)
//IL_021b: Unknown result type (might be due to invalid IL or missing references)
//IL_0224: Unknown result type (might be due to invalid IL or missing references)
//IL_01b8: Unknown result type (might be due to invalid IL or missing references)
//IL_01bd: Unknown result type (might be due to invalid IL or missing references)
//IL_01bf: Unknown result type (might be due to invalid IL or missing references)
//IL_01c9: Unknown result type (might be due to invalid IL or missing references)
//IL_01d2: Expected O, but got Unknown
//IL_0236: Unknown result type (might be due to invalid IL or missing references)
//IL_023f: Expected O, but got Unknown
//IL_023f: Unknown result type (might be due to invalid IL or missing references)
//IL_0244: Unknown result type (might be due to invalid IL or missing references)
//IL_0246: Unknown result type (might be due to invalid IL or missing references)
//IL_0250: Unknown result type (might be due to invalid IL or missing references)
//IL_0259: Expected O, but got Unknown
//IL_04ab: Unknown result type (might be due to invalid IL or missing references)
//IL_03d8: Unknown result type (might be due to invalid IL or missing references)
//IL_03dd: Unknown result type (might be due to invalid IL or missing references)
//IL_03df: Unknown result type (might be due to invalid IL or missing references)
//IL_03e9: Unknown result type (might be due to invalid IL or missing references)
//IL_03f0: Unknown result type (might be due to invalid IL or missing references)
//IL_03fb: Unknown result type (might be due to invalid IL or missing references)
//IL_0404: Expected O, but got Unknown
//IL_0365: Unknown result type (might be due to invalid IL or missing references)
float num = ((SKRect)(ref bounds)).Width - Padding * 2f;
if (Math.Abs(num - _wrapWidth) > 1f)
{
_wrapWidth = num;
UpdateLines();
}
if (base.IsFocused && (DateTime.Now - _lastCursorBlink).TotalMilliseconds > 500.0)
{
_cursorVisible = !_cursorVisible;
_lastCursorBlink = DateTime.Now;
}
SKPaint val = new SKPaint
{
Color = (SKColor)(base.IsEnabled ? base.BackgroundColor : new SKColor((byte)245, (byte)245, (byte)245)),
Style = (SKPaintStyle)0,
IsAntialias = true
};
try
{
canvas.DrawRoundRect(new SKRoundRect(bounds, CornerRadius), val);
SKPaint val2 = new SKPaint
{
Color = (base.IsFocused ? CursorColor : BorderColor),
Style = (SKPaintStyle)1,
StrokeWidth = ((!base.IsFocused) ? 1 : 2),
IsAntialias = true
};
try
{
canvas.DrawRoundRect(new SKRoundRect(bounds, CornerRadius), val2);
SKFont val3 = new SKFont(SKTypeface.Default, FontSize, 1f, 0f);
try
{
float num2 = FontSize * LineHeight;
SKRect val4 = new SKRect(((SKRect)(ref bounds)).Left + Padding, ((SKRect)(ref bounds)).Top + Padding, ((SKRect)(ref bounds)).Right - Padding, ((SKRect)(ref bounds)).Bottom - Padding);
canvas.Save();
canvas.ClipRect(val4, (SKClipOperation)1, false);
if (string.IsNullOrEmpty(Text) && !string.IsNullOrEmpty(Placeholder))
{
SKPaint val5 = new SKPaint(val3)
{
Color = PlaceholderColor,
IsAntialias = true
};
try
{
canvas.DrawText(Placeholder, ((SKRect)(ref val4)).Left, ((SKRect)(ref val4)).Top + FontSize, val5);
}
finally
{
((IDisposable)val5)?.Dispose();
}
}
else
{
SKPaint val6 = new SKPaint(val3);
SKColor color;
if (!base.IsEnabled)
{
SKColor textColor = TextColor;
color = ((SKColor)(ref textColor)).WithAlpha((byte)128);
}
else
{
color = TextColor;
}
val6.Color = color;
val6.IsAntialias = true;
SKPaint val7 = val6;
try
{
SKPaint val8 = new SKPaint
{
Color = SelectionColor,
Style = (SKPaintStyle)0
};
try
{
float num3 = ((SKRect)(ref val4)).Top + FontSize;
int num4 = 0;
for (int i = 0; i < _lines.Count; i++)
{
string text = _lines[i];
float left = ((SKRect)(ref val4)).Left;
if (_selectionStart >= 0 && _selectionLength != 0)
{
int num5 = ((_selectionLength > 0) ? _selectionStart : (_selectionStart + _selectionLength));
int num6 = ((_selectionLength > 0) ? (_selectionStart + _selectionLength) : _selectionStart);
int num7 = num4;
int num8 = num4 + text.Length;
if (num6 > num7 && num5 < num8)
{
int length = Math.Max(0, num5 - num7);
int length2 = Math.Min(text.Length, num6 - num7);
float num9 = left + MeasureText(text.Substring(0, length), val3);
float num10 = left + MeasureText(text.Substring(0, length2), val3);
canvas.DrawRect(new SKRect(num9, num3 - FontSize, num10, num3 + num2 - FontSize), val8);
}
}
canvas.DrawText(text, left, num3, val7);
if (base.IsFocused && _cursorVisible)
{
var (num11, val9) = GetLineColumn(_cursorPosition);
if (num11 == i)
{
float num12 = left + MeasureText(text.Substring(0, Math.Min(val9, text.Length)), val3);
SKPaint val10 = new SKPaint
{
Color = CursorColor,
Style = (SKPaintStyle)1,
StrokeWidth = 2f,
IsAntialias = true
};
try
{
canvas.DrawLine(num12, num3 - FontSize + 2f, num12, num3 + 2f, val10);
}
finally
{
((IDisposable)val10)?.Dispose();
}
}
}
num3 += num2;
num4 += text.Length + 1;
}
}
finally
{
((IDisposable)val8)?.Dispose();
}
}
finally
{
((IDisposable)val7)?.Dispose();
}
}
canvas.Restore();
float num13 = (float)_lines.Count * FontSize * LineHeight;
if (num13 > ((SKRect)(ref val4)).Height)
{
DrawScrollbar(canvas, bounds, ((SKRect)(ref val4)).Height, num13);
}
}
finally
{
((IDisposable)val3)?.Dispose();
}
}
finally
{
((IDisposable)val2)?.Dispose();
}
}
finally
{
((IDisposable)val)?.Dispose();
}
}
private float MeasureText(string text, SKFont font)
{
//IL_000f: Unknown result type (might be due to invalid IL or missing references)
//IL_0015: Expected O, but got Unknown
if (string.IsNullOrEmpty(text))
{
return 0f;
}
SKPaint val = new SKPaint(font);
try
{
return val.MeasureText(text);
}
finally
{
((IDisposable)val)?.Dispose();
}
}
private void DrawScrollbar(SKCanvas canvas, SKRect bounds, float viewHeight, float contentHeight)
{
//IL_003a: Unknown result type (might be due to invalid IL or missing references)
//IL_003f: Unknown result type (might be due to invalid IL or missing references)
//IL_0045: Unknown result type (might be due to invalid IL or missing references)
//IL_004f: Unknown result type (might be due to invalid IL or missing references)
//IL_0056: Unknown result type (might be due to invalid IL or missing references)
//IL_005f: Expected O, but got Unknown
//IL_0078: Unknown result type (might be due to invalid IL or missing references)
//IL_0084: Unknown result type (might be due to invalid IL or missing references)
//IL_0090: Expected O, but got Unknown
float num = 6f;
float num2 = 2f;
float num3 = Math.Max(20f, viewHeight * (viewHeight / contentHeight));
float num4 = ((SKRect)(ref bounds)).Top + Padding + _scrollOffsetY / contentHeight * (viewHeight - num3);
SKPaint val = new SKPaint
{
Color = new SKColor((byte)0, (byte)0, (byte)0, (byte)60),
Style = (SKPaintStyle)0,
IsAntialias = true
};
try
{
canvas.DrawRoundRect(new SKRoundRect(new SKRect(((SKRect)(ref bounds)).Right - num - num2, num4, ((SKRect)(ref bounds)).Right - num2, num4 + num3), num / 2f), val);
}
finally
{
((IDisposable)val)?.Dispose();
}
}
private void EnsureCursorVisible()
{
//IL_0028: Unknown result type (might be due to invalid IL or missing references)
//IL_002d: Unknown result type (might be due to invalid IL or missing references)
int item = GetLineColumn(_cursorPosition).line;
float num = FontSize * LineHeight;
float num2 = (float)item * num;
SKRect bounds = base.Bounds;
float num3 = ((SKRect)(ref bounds)).Height - Padding * 2f;
if (num2 < _scrollOffsetY)
{
_scrollOffsetY = num2;
}
else if (num2 + num > _scrollOffsetY + num3)
{
_scrollOffsetY = num2 + num - num3;
}
}
public override void OnPointerPressed(PointerEventArgs e)
{
//IL_0011: Unknown result type (might be due to invalid IL or missing references)
//IL_0016: Unknown result type (might be due to invalid IL or missing references)
//IL_0083: Unknown result type (might be due to invalid IL or missing references)
//IL_008a: Expected O, but got Unknown
if (!base.IsEnabled)
{
return;
}
base.IsFocused = true;
SKRect screenBounds = base.ScreenBounds;
float num = e.X - ((SKRect)(ref screenBounds)).Left - Padding;
float num2 = e.Y - ((SKRect)(ref screenBounds)).Top - Padding + _scrollOffsetY;
float num3 = FontSize * LineHeight;
int num4 = Math.Clamp((int)(num2 / num3), 0, _lines.Count - 1);
SKFont val = new SKFont(SKTypeface.Default, FontSize, 1f, 0f);
try
{
string text = _lines[num4];
int column = 0;
for (int i = 0; i <= text.Length; i++)
{
if (MeasureText(text.Substring(0, i), val) > num)
{
column = ((i > 0) ? (i - 1) : 0);
break;
}
column = i;
}
_cursorPosition = GetPosition(num4, column);
DateTime utcNow = DateTime.UtcNow;
double totalMilliseconds = (utcNow - _lastClickTime).TotalMilliseconds;
double num5 = Math.Sqrt(Math.Pow(e.X - _lastClickX, 2.0) + Math.Pow(e.Y - _lastClickY, 2.0));
if (totalMilliseconds < 400.0 && num5 < 10.0)
{
SelectWordAtCursor();
_lastClickTime = DateTime.MinValue;
_isSelecting = false;
}
else
{
_selectionStart = _cursorPosition;
_selectionLength = 0;
_isSelecting = true;
_lastClickTime = utcNow;
_lastClickX = e.X;
_lastClickY = e.Y;
}
_cursorVisible = true;
_lastCursorBlink = DateTime.Now;
Invalidate();
}
finally
{
((IDisposable)val)?.Dispose();
}
}
public override void OnPointerMoved(PointerEventArgs e)
{
//IL_0012: Unknown result type (might be due to invalid IL or missing references)
//IL_0017: Unknown result type (might be due to invalid IL or missing references)
//IL_0084: Unknown result type (might be due to invalid IL or missing references)
//IL_008b: Expected O, but got Unknown
if (!base.IsEnabled || !_isSelecting)
{
return;
}
SKRect screenBounds = base.ScreenBounds;
float num = e.X - ((SKRect)(ref screenBounds)).Left - Padding;
float num2 = e.Y - ((SKRect)(ref screenBounds)).Top - Padding + _scrollOffsetY;
float num3 = FontSize * LineHeight;
int num4 = Math.Clamp((int)(num2 / num3), 0, _lines.Count - 1);
SKFont val = new SKFont(SKTypeface.Default, FontSize, 1f, 0f);
try
{
string text = _lines[num4];
int column = 0;
for (int i = 0; i <= text.Length; i++)
{
if (MeasureText(text.Substring(0, i), val) > num)
{
column = ((i > 0) ? (i - 1) : 0);
break;
}
column = i;
}
int position = GetPosition(num4, column);
if (position != _cursorPosition)
{
_cursorPosition = position;
_selectionLength = _cursorPosition - _selectionStart;
_cursorVisible = true;
_lastCursorBlink = DateTime.Now;
Invalidate();
}
}
finally
{
((IDisposable)val)?.Dispose();
}
}
public override void OnPointerReleased(PointerEventArgs e)
{
_isSelecting = false;
}
public override void OnKeyDown(KeyEventArgs e)
{
if (!base.IsEnabled)
{
return;
}
(int line, int column) lineColumn = GetLineColumn(_cursorPosition);
int item = lineColumn.line;
int item2 = lineColumn.column;
_cursorVisible = true;
_lastCursorBlink = DateTime.Now;
switch (e.Key)
{
case Key.Left:
if (_cursorPosition > 0)
{
_cursorPosition--;
EnsureCursorVisible();
}
e.Handled = true;
break;
case Key.Right:
if (_cursorPosition < Text.Length)
{
_cursorPosition++;
EnsureCursorVisible();
}
e.Handled = true;
break;
case Key.Up:
if (item > 0)
{
_cursorPosition = GetPosition(item - 1, item2);
EnsureCursorVisible();
}
e.Handled = true;
break;
case Key.Down:
if (item < _lines.Count - 1)
{
_cursorPosition = GetPosition(item + 1, item2);
EnsureCursorVisible();
}
e.Handled = true;
break;
case Key.Home:
_cursorPosition = GetPosition(item, 0);
EnsureCursorVisible();
e.Handled = true;
break;
case Key.End:
_cursorPosition = GetPosition(item, _lines[item].Length);
EnsureCursorVisible();
e.Handled = true;
break;
case Key.Enter:
if (!IsReadOnly)
{
InsertText("\n");
}
e.Handled = true;
break;
case Key.Backspace:
if (!IsReadOnly)
{
if (_selectionLength != 0)
{
DeleteSelection();
}
else if (_cursorPosition > 0)
{
Text = Text.Remove(_cursorPosition - 1, 1);
_cursorPosition--;
}
EnsureCursorVisible();
}
e.Handled = true;
break;
case Key.Delete:
if (!IsReadOnly)
{
if (_selectionLength != 0)
{
DeleteSelection();
}
else if (_cursorPosition < Text.Length)
{
Text = Text.Remove(_cursorPosition, 1);
}
}
e.Handled = true;
break;
case Key.Tab:
if (!IsReadOnly)
{
InsertText(" ");
}
e.Handled = true;
break;
case Key.A:
if (e.Modifiers.HasFlag(KeyModifiers.Control))
{
SelectAll();
e.Handled = true;
}
break;
case Key.C:
if (e.Modifiers.HasFlag(KeyModifiers.Control))
{
CopyToClipboard();
e.Handled = true;
}
break;
case Key.V:
if (e.Modifiers.HasFlag(KeyModifiers.Control) && !IsReadOnly)
{
PasteFromClipboard();
e.Handled = true;
}
break;
case Key.X:
if (e.Modifiers.HasFlag(KeyModifiers.Control) && !IsReadOnly)
{
CutToClipboard();
e.Handled = true;
}
break;
}
Invalidate();
}
public override void OnTextInput(TextInputEventArgs e)
{
if (base.IsEnabled && !IsReadOnly && (string.IsNullOrEmpty(e.Text) || e.Text.Length != 1 || e.Text[0] >= ' ') && !string.IsNullOrEmpty(e.Text))
{
InsertText(e.Text);
e.Handled = true;
}
}
private void InsertText(string text)
{
if (_selectionLength > 0)
{
string text2 = Text;
Text = text2.Remove(_selectionStart, _selectionLength);
_cursorPosition = _selectionStart;
_selectionStart = -1;
_selectionLength = 0;
}
if (MaxLength > 0 && Text.Length + text.Length > MaxLength)
{
text = text.Substring(0, Math.Max(0, MaxLength - Text.Length));
}
if (!string.IsNullOrEmpty(text))
{
Text = Text.Insert(_cursorPosition, text);
_cursorPosition += text.Length;
EnsureCursorVisible();
}
}
public override void OnScroll(ScrollEventArgs e)
{
//IL_001e: Unknown result type (might be due to invalid IL or missing references)
//IL_0023: Unknown result type (might be due to invalid IL or missing references)
float num = FontSize * LineHeight;
float num2 = (float)_lines.Count * num;
SKRect bounds = base.Bounds;
float num3 = ((SKRect)(ref bounds)).Height - Padding * 2f;
float max = Math.Max(0f, num2 - num3);
_scrollOffsetY = Math.Clamp(_scrollOffsetY - e.DeltaY * 3f, 0f, max);
Invalidate();
}
public override void OnFocusGained()
{
base.OnFocusGained();
SkiaVisualStateManager.GoToState(this, "Focused");
}
public override void OnFocusLost()
{
base.OnFocusLost();
SkiaVisualStateManager.GoToState(this, "Normal");
}
public void SelectAll()
{
_selectionStart = 0;
_cursorPosition = Text.Length;
_selectionLength = Text.Length;
Invalidate();
}
private void SelectWordAtCursor()
{
if (!string.IsNullOrEmpty(Text))
{
int num = _cursorPosition;
int i = _cursorPosition;
while (num > 0 && IsWordChar(Text[num - 1]))
{
num--;
}
for (; i < Text.Length && IsWordChar(Text[i]); i++)
{
}
_selectionStart = num;
_cursorPosition = i;
_selectionLength = i - num;
}
}
private static bool IsWordChar(char c)
{
if (!char.IsLetterOrDigit(c))
{
return c == '_';
}
return true;
}
private void CopyToClipboard()
{
if (_selectionLength != 0)
{
int startIndex = Math.Min(_selectionStart, _selectionStart + _selectionLength);
int length = Math.Abs(_selectionLength);
SystemClipboard.SetText(Text.Substring(startIndex, length));
}
}
private void CutToClipboard()
{
CopyToClipboard();
DeleteSelection();
Invalidate();
}
private void PasteFromClipboard()
{
string text = SystemClipboard.GetText();
if (!string.IsNullOrEmpty(text))
{
if (_selectionLength != 0)
{
DeleteSelection();
}
InsertText(text);
}
}
private void DeleteSelection()
{
if (_selectionLength != 0)
{
int num = Math.Min(_selectionStart, _selectionStart + _selectionLength);
int count = Math.Abs(_selectionLength);
Text = Text.Remove(num, count);
_cursorPosition = num;
_selectionStart = -1;
_selectionLength = 0;
}
}
protected override SKSize MeasureOverride(SKSize availableSize)
{
//IL_00d9: Unknown result type (might be due to invalid IL or missing references)
//IL_0087: Unknown result type (might be due to invalid IL or missing references)
if (AutoSize)
{
float num = FontSize * LineHeight;
float val = Math.Max(num + Padding * 2f, (float)_lines.Count * num + Padding * 2f);
return new SKSize((((SKSize)(ref availableSize)).Width < float.MaxValue) ? ((SKSize)(ref availableSize)).Width : 200f, Math.Min(val, (((SKSize)(ref availableSize)).Height < float.MaxValue) ? ((SKSize)(ref availableSize)).Height : 200f));
}
return new SKSize((((SKSize)(ref availableSize)).Width < float.MaxValue) ? Math.Min(((SKSize)(ref availableSize)).Width, 200f) : 200f, (((SKSize)(ref availableSize)).Height < float.MaxValue) ? Math.Min(((SKSize)(ref availableSize)).Height, 150f) : 150f);
}
}
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