443 lines
19 KiB
C#
443 lines
19 KiB
C#
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using PCL.Core.App;
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using PCL.Core.Utils;
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namespace PCL.Core.UI.Controls;
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using System;
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using System.Collections.Generic;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Media;
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using System.Windows.Threading;
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using System.Linq;
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using System.Windows.Media.Imaging;
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public partial class MotdRenderer {
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// Default Color for originalColorMap: #808080
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// Minecraft color code mapping
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private static readonly Dictionary<string, Brush> _ColorMapWithBlackBackground = new() {
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{ "0", Brushes.Black }, // Black
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{ "1", new SolidColorBrush(Color.FromRgb(0, 0, 170)) }, // Dark Blue
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{ "2", new SolidColorBrush(Color.FromRgb(0, 170, 0)) }, // Dark Green
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{ "3", new SolidColorBrush(Color.FromRgb(0, 170, 170)) }, // Cyan
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{ "4", new SolidColorBrush(Color.FromRgb(170, 0, 0)) }, // Dark Red
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{ "5", new SolidColorBrush(Color.FromRgb(170, 0, 170)) }, // Purple
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{ "6", new SolidColorBrush(Color.FromRgb(255, 170, 0)) }, // Gold
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{ "7", Brushes.LightGray }, // Gray
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{ "8", Brushes.DarkGray }, // Dark Gray
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{ "9", Brushes.Blue }, // Blue
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{ "a", Brushes.Lime }, // Green
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{ "b", Brushes.Cyan }, // Cyan
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{ "c", Brushes.Red }, // Red
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{ "d", Brushes.Magenta }, // Magenta
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{ "e", Brushes.Yellow }, // Yellow
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{ "f", Brushes.White } // White
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};
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// Color code mapping optimized for white background (#f3f6fa)
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private static readonly Dictionary<string, Brush> _ColorMapWithWhiteBackground = new() {
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{ "0", new SolidColorBrush(Color.FromRgb(51, 51, 51)) }, // Deep Gray #333333
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{ "1", new SolidColorBrush(Color.FromRgb(0, 48, 135)) }, // Navy Blue #003087
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{ "2", new SolidColorBrush(Color.FromRgb(0, 128, 0)) }, // Forest Green #008000
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{ "3", new SolidColorBrush(Color.FromRgb(0, 122, 122)) }, // Cyan #007A7A
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{ "4", new SolidColorBrush(Color.FromRgb(161, 0, 0)) }, // Deep Red #A10000
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{ "5", new SolidColorBrush(Color.FromRgb(128, 0, 128)) }, // Deep Purple #800080
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{ "6", new SolidColorBrush(Color.FromRgb(204, 112, 0)) }, // Deep Orange #CC7000
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{ "7", new SolidColorBrush(Color.FromRgb(102, 102, 102)) }, // Medium Gray #666666
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{ "8", new SolidColorBrush(Color.FromRgb(68, 68, 68)) }, // Charcoal #444444
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{ "9", new SolidColorBrush(Color.FromRgb(0, 68, 204)) }, // Royal Blue #0044CC
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{ "a", new SolidColorBrush(Color.FromRgb(0, 153, 0)) }, // Green #009900
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{ "b", new SolidColorBrush(Color.FromRgb(0, 161, 161)) }, // Cyan #00A1A1
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{ "c", new SolidColorBrush(Color.FromRgb(204, 0, 0)) }, // Red #CC0000
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{ "d", new SolidColorBrush(Color.FromRgb(194, 0, 194)) }, // Magenta #C200C2
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{ "e", new SolidColorBrush(Color.FromRgb(179, 160, 0)) }, // Deep Yellow #B3A000
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{ "f", new SolidColorBrush(Color.FromRgb(136, 136, 136)) } // White
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};
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// Format code mapping
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private readonly Dictionary<string, bool> _formatMap = new() {
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{ "l", true }, // Bold
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{ "o", true }, // Italic
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{ "n", true }, // Underline
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{ "m", true }, // Strikethrough
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{ "k", true }, // Obfuscated (not supported)
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{ "r", false } // Reset
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};
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// Store TextBlock and original text for §k obfuscated text
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private readonly List<(TextBlock TextBlock, string OriginalText)> _obfuscatedTextBlocks = [];
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private readonly Random _random = new();
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private const string RandomChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()";
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private readonly Color _backgroundColor = Color.FromRgb(243, 246, 250); // #f3f6fa
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public MotdRenderer() {
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InitializeComponent(); // 初始化 XAML 定义的控件
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// Start timer to update §k text
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var timer = new DispatcherTimer {
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Interval = TimeSpan.FromMilliseconds(20)
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};
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timer.Tick += _UpdateObfuscatedText;
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timer.Start();
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}
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private void _UpdateObfuscatedText(object? sender, EventArgs e) {
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foreach (var (textBlock, originalText) in _obfuscatedTextBlocks) {
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// Generate random characters of the same length as the original text
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var obfuscated = string.Join("",
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Enumerable.Range(0, originalText.Length).Select(_ => RandomChars[_random.Next(RandomChars.Length)]));
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textBlock.Text = obfuscated;
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}
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}
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private static double _GetRelativeLuminance(Color color) {
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var r = color.R / 255.0;
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var g = color.G / 255.0;
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var b = color.B / 255.0;
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var rL = r <= 0.03928 ? r / 12.92 : Math.Pow((r + 0.055) / 1.055, 2.4);
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var gL = g <= 0.03928 ? g / 12.92 : Math.Pow((g + 0.055) / 1.055, 2.4);
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var bL = b <= 0.03928 ? b / 12.92 : Math.Pow((b + 0.055) / 1.055, 2.4);
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return 0.2126 * rL + 0.7152 * gL + 0.0722 * bL;
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}
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private static double _GetContrastRatio(Color foreground, Color background) {
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var l1 = _GetRelativeLuminance(foreground);
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var l2 = _GetRelativeLuminance(background);
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return (Math.Max(l1, l2) + 0.05) / (Math.Min(l1, l2) + 0.05);
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}
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private Color _AdjustColorForContrast(Color inputColor) {
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var contrastRatio = _GetContrastRatio(inputColor, _backgroundColor);
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if (contrastRatio >= 4.5) return inputColor; // Contrast is sufficient
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// Convert RGB to HSL
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var r = inputColor.R / 255.0;
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var g = inputColor.G / 255.0;
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var b = inputColor.B / 255.0;
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var max = Math.Max(Math.Max(r, g), b);
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var min = Math.Min(Math.Min(r, g), b);
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var l = (max + min) / 2.0;
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double s;
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double h;
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if (Math.Abs(max - min) < double.Epsilon) {
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h = 0.0;
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s = 0.0;
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} else {
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var d = max - min;
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s = l > 0.5 ? d / (2.0 - max - min) : d / (max + min);
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h = max switch {
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_ when Math.Abs(max - r) < double.Epsilon => (g - b) / d + (g < b ? 6.0 : 0.0),
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_ when Math.Abs(max - g) < double.Epsilon => (b - r) / d + 2.0,
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_ => (r - g) / d + 4.0
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};
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h /= 6.0;
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}
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// Decrease lightness until contrast ratio ≥ 4.5:1
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var newL = l;
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var adjustedColor = inputColor;
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while (newL > 0.1 && _GetContrastRatio(adjustedColor, _backgroundColor) < 4.5) {
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newL -= 0.05; // Gradually decrease lightness
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double newR, newG, newB;
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if (s == 0) {
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newR = newL;
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newG = newL;
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newB = newL;
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} else {
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var q = newL < 0.5 ? newL * (1.0 + s) : newL + s - newL * s;
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var p = 2.0 * newL - q;
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newR = _HueToRgb(p, q, h + 1.0 / 3.0);
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newG = _HueToRgb(p, q, h);
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newB = _HueToRgb(p, q, h - 1.0 / 3.0);
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}
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adjustedColor = Color.FromRgb((byte)(newR * 255), (byte)(newG * 255), (byte)(newB * 255));
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}
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// If contrast is still insufficient, use default color #555555
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return _GetContrastRatio(adjustedColor, _backgroundColor) < 4.5 ? Color.FromRgb(85, 85, 85) : adjustedColor;
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}
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private static double _HueToRgb(double p, double q, double t) {
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if (t < 0) t += 1.0;
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if (t > 1) t -= 1.0;
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if (t < 1.0 / 6.0) return p + (q - p) * 6.0 * t;
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if (t < 0.5) return q;
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if (t < 2.0 / 3.0) return p + (q - p) * (2.0 / 3.0 - t) * 6.0;
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return p;
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}
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public static bool TryGetColorFromCode(string code, bool isDarkMode, out String? color) {
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var colorMap = isDarkMode ? _ColorMapWithBlackBackground : _ColorMapWithWhiteBackground;
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var success = colorMap.TryGetValue(code.ToLower(), out var brush);
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if (!success) {
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color = null;
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return false;
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}
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var solidColorBrush = ((SolidColorBrush)brush!).Color;
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color = $"#{solidColorBrush.R:X2}{solidColorBrush.G:X2}{solidColorBrush.B:X2}";
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return success;
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}
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public void RenderMotd(string motd, bool isDarkMode = true, int maxLines = int.MaxValue, double fontSize = 12, bool isCentered = true) {
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MotdCanvas.Children.Clear();
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_obfuscatedTextBlocks.Clear();
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motd ??= string.Empty;
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var colorMap = isDarkMode ? _ColorMapWithBlackBackground : _ColorMapWithWhiteBackground;
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var font = Config.Preference.MotdFont;
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var fontFamily = new FontFamily(string.IsNullOrWhiteSpace(font)
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? "./Resources/#PCL English, Segoe UI, Microsoft YaHei UI"
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: font);
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var canvasWidth = MotdCanvas.ActualWidth > 0 ? MotdCanvas.ActualWidth : 300; // Prevent zero width
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var canvasHeight = MotdCanvas.ActualHeight > 0 ? MotdCanvas.ActualHeight : 34; // Prevent zero height
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double y = 10;
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// Split multi-line MOTD
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motd = motd.Replace("\n", "\r\n");
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var lines = motd.Split("\r\n");
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var currentColor = colorMap["f"];
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var isBold = false;
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var isItalic = false;
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var isUnderline = false;
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var isStrikethrough = false;
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var isObfuscated = false;
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// 限制显示的行数不超过maxLines
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var lineCount = Math.Min(lines.Length, maxLines);
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for (var lineIndex = 0; lineIndex < lineCount; lineIndex++) {
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var line = lines[lineIndex].Trim();
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var parts = RegexPatterns.MotdCode.Split(line);
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// Calculate line width
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double lineWidth = 0;
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double lineHeight = 0;
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double tempX = 0; // Temporary x-coordinate for width calculation
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var textBlocks = new List<TextBlock>(); // Store TextBlocks for the line
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var positions = new List<double>(); // Store x-coordinates for each TextBlock
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// 找出第一个和最后一个不是格式符的文本部分的索引
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var firstNonFormatPartIndex = -1;
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var lastNonFormatPartIndex = -1;
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for (var j = 0; j < parts.Length; j++)
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{
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var part = parts[j];
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if (!string.IsNullOrEmpty(part) && !(part.StartsWith('§') && part.Length == 2) && !RegexPatterns.HexColor.IsMatch(part))
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{
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if (firstNonFormatPartIndex == -1)
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{
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firstNonFormatPartIndex = j;
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}
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lastNonFormatPartIndex = j;
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}
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}
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for (var i = 0; i < parts.Length; i++) {
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var part = parts[i];
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var partTrimmed = part;
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if (i == firstNonFormatPartIndex) {
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partTrimmed = part.TrimStart();
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} else if (i == lastNonFormatPartIndex) {
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partTrimmed = part.TrimEnd();
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}
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if (string.IsNullOrEmpty(partTrimmed)) continue;
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// Handle § color codes
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if (partTrimmed.StartsWith('§') && partTrimmed.Length == 2) {
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var code = partTrimmed[1..].ToLower();
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if (colorMap.TryGetValue(code, out var brush)) {
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currentColor = brush;
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isBold = false;
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isItalic = false;
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isUnderline = false;
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isStrikethrough = false;
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isObfuscated = false;
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} else if (_formatMap.ContainsKey(code)) {
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switch (code) {
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case "l":
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isBold = true;
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break;
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case "o":
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isItalic = true;
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break;
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case "n":
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isUnderline = true;
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break;
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case "m":
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isStrikethrough = true;
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break;
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case "k":
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isObfuscated = true;
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break;
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case "r":
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currentColor = colorMap["f"];
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isBold = false;
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isItalic = false;
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isUnderline = false;
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isStrikethrough = false;
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isObfuscated = false;
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break;
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}
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}
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continue;
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}
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// Handle RGB color codes
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if (RegexPatterns.HexColor.IsMatch(partTrimmed)) {
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try {
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var hex = partTrimmed[1..];
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var r = Convert.ToByte(hex[..2], 16);
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var g = Convert.ToByte(hex.Substring(2, 2), 16);
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var b = Convert.ToByte(hex.Substring(4, 2), 16);
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var inputColor = Color.FromRgb(r, g, b);
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currentColor = new SolidColorBrush(_AdjustColorForContrast(inputColor));
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isBold = false;
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isItalic = false;
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isUnderline = false;
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isStrikethrough = false;
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isObfuscated = false;
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} catch {
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// Invalid RGB color, keep current color
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}
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continue;
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}
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// Render text, always use original text for width calculation
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var displayText = partTrimmed;
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TextBlock textBlock;
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if (isObfuscated) {
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// Generate initial random characters for §k text
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foreach (var singleChar in partTrimmed) {
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displayText = RandomChars[_random.Next(RandomChars.Length)].ToString();
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textBlock = _RenderText(displayText, fontFamily, fontSize, currentColor, isBold, isItalic,
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isUnderline, isStrikethrough, tempX, y, true,
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_MeasureTextWidth(singleChar.ToString(), fontFamily, fontSize, isBold, isItalic));
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_obfuscatedTextBlocks.Add((textBlock, singleChar.ToString()));
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textBlocks.Add(textBlock);
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positions.Add(tempX);
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tempX += _MeasureTextWidth(singleChar.ToString(), fontFamily, fontSize, isBold, isItalic);
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}
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} else {
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textBlock = _RenderText(displayText, fontFamily, fontSize, currentColor, isBold, isItalic,
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isUnderline, isStrikethrough, tempX, y);
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||
|
|
textBlocks.Add(textBlock);
|
||
|
|
positions.Add(tempX);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Update tempX coordinate using original text width
|
||
|
|
if (!isObfuscated) {
|
||
|
|
tempX += _MeasureTextWidth(partTrimmed, fontFamily, fontSize, isBold, isItalic);
|
||
|
|
}
|
||
|
|
|
||
|
|
var textHeight = _MeasureTextHeight(partTrimmed, fontFamily, fontSize, isBold, isItalic);
|
||
|
|
lineHeight = textHeight > lineHeight ? textHeight : lineHeight;
|
||
|
|
lineWidth = tempX; // Update line width
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isCentered) {
|
||
|
|
// Center-align: Adjust x-coordinates for each TextBlock
|
||
|
|
var offsetX = (canvasWidth - lineWidth) / 2;
|
||
|
|
for (var i = 0; i < textBlocks.Count; i++) {
|
||
|
|
Canvas.SetLeft(textBlocks[i], positions[i] + offsetX);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 计算当前行的垂直位置
|
||
|
|
double offsetY;
|
||
|
|
if (lineCount == 1) {
|
||
|
|
// 单行文本居中
|
||
|
|
offsetY = (canvasHeight - lineHeight) / 2;
|
||
|
|
} else {
|
||
|
|
// 多行文本的位置计算
|
||
|
|
var totalHeight = lineCount * lineHeight; // 使用实际显示的行数计算总高度
|
||
|
|
var startOffset = (canvasHeight - totalHeight) / 2;
|
||
|
|
offsetY = startOffset + (lineIndex * lineHeight);
|
||
|
|
}
|
||
|
|
|
||
|
|
// 设置所有文本块的垂直位置
|
||
|
|
foreach (var textBlock in textBlocks) {
|
||
|
|
Canvas.SetTop(textBlock, offsetY);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private TextBlock _RenderText(string text, FontFamily fontFamily, double fontSize, Brush color,
|
||
|
|
bool isBold, bool isItalic, bool isUnderline, bool isStrikethrough,
|
||
|
|
double x, double y, bool withClip = false, double clipWidth = 15) {
|
||
|
|
var textBlock = new TextBlock {
|
||
|
|
Text = text,
|
||
|
|
FontFamily = fontFamily,
|
||
|
|
FontSize = fontSize,
|
||
|
|
Foreground = color,
|
||
|
|
FontWeight = isBold ? FontWeights.Bold : FontWeights.Normal,
|
||
|
|
FontStyle = isItalic ? FontStyles.Italic : FontStyles.Normal
|
||
|
|
};
|
||
|
|
|
||
|
|
if (isUnderline || isStrikethrough) {
|
||
|
|
textBlock.TextDecorations = new TextDecorationCollection();
|
||
|
|
if (isUnderline) textBlock.TextDecorations.Add(TextDecorations.Underline);
|
||
|
|
if (isStrikethrough) textBlock.TextDecorations.Add(TextDecorations.Strikethrough);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (withClip) {
|
||
|
|
var clipRect = new RectangleGeometry {
|
||
|
|
Rect = new Rect(0, 0, clipWidth, _MeasureTextHeight(text, fontFamily, fontSize, isBold, isItalic))
|
||
|
|
};
|
||
|
|
textBlock.Clip = clipRect;
|
||
|
|
}
|
||
|
|
|
||
|
|
Canvas.SetLeft(textBlock, x);
|
||
|
|
Canvas.SetTop(textBlock, y);
|
||
|
|
if (Content is Canvas canvas) {
|
||
|
|
canvas.Children.Add(textBlock);
|
||
|
|
}
|
||
|
|
|
||
|
|
return textBlock;
|
||
|
|
}
|
||
|
|
|
||
|
|
private static FormattedText _CreateFormattedText(string text, FontFamily fontFamily, double fontSize, bool isBold, bool isItalic) {
|
||
|
|
return new FormattedText(
|
||
|
|
text,
|
||
|
|
System.Globalization.CultureInfo.InvariantCulture,
|
||
|
|
FlowDirection.LeftToRight,
|
||
|
|
new Typeface(fontFamily, isItalic ? FontStyles.Italic : FontStyles.Normal,
|
||
|
|
isBold ? FontWeights.Bold : FontWeights.Normal, FontStretches.Normal),
|
||
|
|
fontSize,
|
||
|
|
Brushes.White,
|
||
|
|
96);
|
||
|
|
}
|
||
|
|
|
||
|
|
private static double _MeasureTextWidth(string text, FontFamily fontFamily, double fontSize, bool isBold, bool isItalic) {
|
||
|
|
return _CreateFormattedText(text, fontFamily, fontSize, isBold, isItalic).WidthIncludingTrailingWhitespace;
|
||
|
|
}
|
||
|
|
|
||
|
|
private static double _MeasureTextHeight(string text, FontFamily fontFamily, double fontSize, bool isBold, bool isItalic) {
|
||
|
|
return _CreateFormattedText(text, fontFamily, fontSize, isBold, isItalic).Height;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void RenderCanvas() {
|
||
|
|
// Ensure Canvas is rendered
|
||
|
|
MotdCanvas.UpdateLayout();
|
||
|
|
|
||
|
|
// Generate static random characters for §k text
|
||
|
|
foreach (var (textBlock, originalText) in _obfuscatedTextBlocks) {
|
||
|
|
textBlock.Text = string.Join("",
|
||
|
|
Enumerable.Range(0, originalText.Length).Select(_ => RandomChars[_random.Next(RandomChars.Length)]));
|
||
|
|
}
|
||
|
|
|
||
|
|
// Capture Canvas using RenderTargetBitmap
|
||
|
|
var rtb = new RenderTargetBitmap(
|
||
|
|
(int)MotdCanvas.Width, (int)MotdCanvas.Height, 96, 96, PixelFormats.Pbgra32);
|
||
|
|
rtb.Render(MotdCanvas);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void ClearCanvas() {
|
||
|
|
MotdCanvas.Children.Clear();
|
||
|
|
_obfuscatedTextBlocks.Clear();
|
||
|
|
}
|
||
|
|
}
|