80 lines
2.4 KiB
C#
80 lines
2.4 KiB
C#
using Qrakhen.Qamp.Memory;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Text;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Data;
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using System.Windows.Documents;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using System.Windows.Navigation;
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using System.Windows.Shapes;
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namespace Qrakhen.Qamp.Editor.Controls;
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public partial class LineRenderer : UserControl
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{
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public static readonly DependencyProperty LineBufferProperty =
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DependencyProperty.Register(
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nameof(LineBuffer),
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typeof(LineBuffer),
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typeof(LineRenderer),
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new FrameworkPropertyMetadata(null, OnLineBufferChanged));
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public LineBuffer LineBuffer {
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get => (LineBuffer)GetValue(LineBufferProperty);
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set => SetValue(LineBufferProperty, value);
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}
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private readonly Typeface _typeface = new(new FontFamily("Consolas"), FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
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private const double FontSize = 14;
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private const double LineHeight = 18;
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public LineRenderer()
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{
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Height = LineHeight;
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SnapsToDevicePixels = true;
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}
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protected override void OnRender(DrawingContext drawingContext)
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{
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base.OnRender(drawingContext);
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if (string.IsNullOrEmpty(LineBuffer.Cached))
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return;
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var formattedText = TextHelper.GetText(
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LineBuffer.Cached,
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FontSize,
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Brushes.White,
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VisualTreeHelper.GetDpi(this).PixelsPerDip
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);
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drawingContext.DrawText(formattedText, new Point(2, 0));
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}
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private static void OnLineBufferChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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if (d is LineRenderer renderer) {
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if (e.OldValue is LineBuffer oldBuffer && oldBuffer != null) {
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oldBuffer.PropertyChanged -= renderer.OnLineBufferPropertyChanged;
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}
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if (e.NewValue is LineBuffer newBuffer && newBuffer != null) {
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newBuffer.PropertyChanged += renderer.OnLineBufferPropertyChanged;
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}
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renderer.InvalidateVisual();
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}
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}
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private void OnLineBufferPropertyChanged(object? sender, PropertyChangedEventArgs e)
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{
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if (e.PropertyName == nameof(LineBuffer.Cached))
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InvalidateVisual();
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}
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}
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