Files
LanMountainDesktop/LanMountainDesktop/Views/Components/StudyInterruptDensityWidget.axaml.cs
2026-03-13 22:20:12 +08:00

683 lines
25 KiB
C#

using System;
using System.Collections.Generic;
using System.Globalization;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Media;
using Avalonia.Threading;
using LanMountainDesktop.Models;
using LanMountainDesktop.Services;
using LanMountainDesktop.Theme;
namespace LanMountainDesktop.Views.Components;
public partial class StudyInterruptDensityWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
{
private static readonly Color[] PrimaryColorCandidates =
{
Color.Parse("#FFEAF5FF"),
Color.Parse("#FFDDEEFF"),
Color.Parse("#FFCEE3FA"),
Color.Parse("#FF1B2E45"),
Color.Parse("#FF233A54"),
Color.Parse("#FFFFFFFF"),
Color.Parse("#FF101C2A")
};
private static readonly Color[] SecondaryColorCandidates =
{
Color.Parse("#FFC7D9EC"),
Color.Parse("#FFBAD0E8"),
Color.Parse("#FFD9E8F6"),
Color.Parse("#FF2F4763"),
Color.Parse("#FF385673"),
Color.Parse("#FFEAF3FA"),
Color.Parse("#FF1A2C40")
};
private static readonly FontFamily MiSansVariableFontFamily = new("MiSans VF, avares://LanMountainDesktop/Assets/Fonts#MiSans");
private static readonly Color DarkSubstrate = Color.Parse("#FF0B1220");
private static readonly Color LightSubstrate = Color.Parse("#FFF1F5FA");
private readonly IStudyAnalyticsService _studyAnalyticsService = StudyAnalyticsServiceFactory.CreateDefault();
private readonly StudyAnalyticsMonitoringLeaseCoordinator _monitoringLeaseCoordinator = StudyAnalyticsMonitoringLeaseCoordinatorFactory.CreateDefault();
private LanMountainDesktop.PluginSdk.ISettingsService _settingsService = LanMountainDesktop.Services.Settings.HostSettingsFacadeProvider.GetOrCreate().Settings;
private readonly LocalizationService _localizationService = new();
private readonly DispatcherTimer _uiTimer = new()
{
Interval = TimeSpan.FromMilliseconds(250)
};
private double _currentCellSize = 48;
private bool _isAttached;
private bool _isOnActivePage = true;
private bool _isCompactMode;
private bool _isUltraCompactMode;
private string _languageCode = "zh-CN";
private IDisposable? _monitoringLease;
private enum DensityLevelKind
{
Calm = 0,
Normal = 1,
Frequent = 2,
Severe = 3
}
private readonly record struct InterruptDensityMetrics(
double DensityPerMin,
int SegmentCount,
TimeSpan Duration,
double ThresholdPerMin,
DensityLevelKind LevelKind);
public StudyInterruptDensityWidget()
{
InitializeComponent();
_uiTimer.Tick += OnUiTimerTick;
AttachedToVisualTree += OnAttachedToVisualTree;
DetachedFromVisualTree += OnDetachedFromVisualTree;
SizeChanged += OnSizeChanged;
ActualThemeVariantChanged += OnActualThemeVariantChanged;
ApplyVariableFontFamily();
ReloadLanguageCode();
ApplyCellSize(_currentCellSize);
RefreshVisual();
}
public void ApplyCellSize(double cellSize)
{
_currentCellSize = Math.Max(1, cellSize);
UpdateAdaptiveLayout();
}
public void SetDesktopPageContext(bool isOnActivePage, bool isEditMode)
{
_ = isEditMode;
_isOnActivePage = isOnActivePage;
UpdateMonitoringLeaseState();
UpdateTimerState();
}
private void OnAttachedToVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
{
_isAttached = true;
ReloadLanguageCode();
UpdateMonitoringLeaseState();
UpdateTimerState();
RefreshVisual();
}
private void OnDetachedFromVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
{
_isAttached = false;
_monitoringLease?.Dispose();
_monitoringLease = null;
_uiTimer.Stop();
}
private void OnSizeChanged(object? sender, SizeChangedEventArgs e)
{
UpdateAdaptiveLayout();
ApplyTypographyByBackground(ResolvePanelBackgroundColor());
}
private void OnActualThemeVariantChanged(object? sender, EventArgs e)
{
RefreshVisual();
}
private void OnUiTimerTick(object? sender, EventArgs e)
{
RefreshVisual();
}
private void UpdateTimerState()
{
if (_isAttached && _isOnActivePage)
{
if (!_uiTimer.IsEnabled)
{
_uiTimer.Start();
}
return;
}
_uiTimer.Stop();
}
private void UpdateMonitoringLeaseState()
{
var shouldMonitor = _isAttached && _isOnActivePage;
if (shouldMonitor)
{
_monitoringLease ??= _monitoringLeaseCoordinator.AcquireLease();
return;
}
_monitoringLease?.Dispose();
_monitoringLease = null;
}
private void RefreshVisual()
{
var snapshot = _studyAnalyticsService.GetSnapshot();
var panelColor = ResolvePanelBackgroundColor();
ApplyTypographyByBackground(panelColor);
ApplyLocalizedLabels();
var isSessionRunning = snapshot.Session.State == StudySessionRuntimeState.Running;
var isSessionReport = snapshot.DataMode == StudyDataMode.SessionReport && snapshot.LastSessionReport is not null;
var isSessionView = isSessionRunning || isSessionReport;
ModeTextBlock.Text = isSessionView
? L("study.interrupt_density.mode.session", "Session")
: L("study.interrupt_density.mode.realtime", "Realtime");
ApplyModeBadgeColor(panelColor, isSessionView ? Color.Parse("#FF0F6B49") : Color.Parse("#FF2F5DA8"));
InterruptDensityMetrics? metrics;
if (isSessionReport && snapshot.LastSessionReport is not null)
{
metrics = ComputeReportDensity(snapshot.LastSessionReport, snapshot.Config);
}
else
{
metrics = isSessionRunning
? ComputeSessionDensity(snapshot)
: ComputeRealtimeDensity(snapshot);
}
if (metrics is null)
{
ApplyUnavailable(snapshot.Config.MaxSegmentsPerMin);
return;
}
var m = metrics.Value;
DensityValueTextBlock.Text = string.Format(
CultureInfo.InvariantCulture,
L("study.interrupt_density.density_value_format", "{0:F1}"),
m.DensityPerMin);
CountValueTextBlock.Text = string.Format(
CultureInfo.InvariantCulture,
L("study.interrupt_density.segment_count_value_format", "{0}"),
m.SegmentCount);
DurationValueTextBlock.Text = FormatDuration(m.Duration);
DensityLevelTextBlock.Text = string.Format(
CultureInfo.InvariantCulture,
L("study.interrupt_density.level_format", "Level {0}"),
ResolveLevelText(m.LevelKind));
ThresholdTextBlock.Text = string.Format(
CultureInfo.InvariantCulture,
L("study.interrupt_density.threshold_format", "Threshold {0:F1}/min"),
m.ThresholdPerMin);
}
private void ApplyLocalizedLabels()
{
TitleTextBlock.Text = L("study.interrupt_density.title", "Interrupt Density");
DensityUnitTextBlock.Text = L("study.interrupt_density.unit", "/min");
CountLabelTextBlock.Text = _isUltraCompactMode
? L("study.interrupt_density.segment_count_short", "Count")
: L("study.interrupt_density.segment_count", "Interrupts");
DurationLabelTextBlock.Text = _isUltraCompactMode
? L("study.interrupt_density.duration_short", "Time")
: L("study.interrupt_density.duration", "Duration");
}
private void ApplyUnavailable(double thresholdPerMin)
{
var unavailable = L("study.interrupt_density.unavailable", "--");
DensityValueTextBlock.Text = unavailable;
CountValueTextBlock.Text = unavailable;
DurationValueTextBlock.Text = unavailable;
DensityLevelTextBlock.Text = string.Format(
CultureInfo.InvariantCulture,
L("study.interrupt_density.level_format", "Level {0}"),
unavailable);
ThresholdTextBlock.Text = string.Format(
CultureInfo.InvariantCulture,
L("study.interrupt_density.threshold_format", "Threshold {0:F1}/min"),
Math.Max(1, thresholdPerMin));
}
private void UpdateAdaptiveLayout()
{
var cellScale = Math.Clamp(_currentCellSize / 48d, 0.76, 2.4);
var widthScale = Bounds.Width > 1 ? Bounds.Width / 420d : cellScale;
var heightScale = Bounds.Height > 1 ? Bounds.Height / 220d : cellScale;
var boundsScale = Math.Clamp(Math.Min(widthScale, heightScale), 0.52, 2.2);
var scale = Math.Clamp(Math.Min(cellScale, boundsScale * 1.08), 0.52, 2.2);
_isCompactMode = scale < 0.92 || (Bounds.Width > 1 && Bounds.Width < 350) || (Bounds.Height > 1 && Bounds.Height < 170);
_isUltraCompactMode = scale < 0.72 || (Bounds.Width > 1 && Bounds.Width < 295) || (Bounds.Height > 1 && Bounds.Height < 130);
var compactMultiplier = _isUltraCompactMode ? 0.76 : _isCompactMode ? 0.88 : 1.0;
RootBorder.CornerRadius = new CornerRadius(Math.Clamp(_currentCellSize * 0.46, 12, 34));
RootBorder.Padding = new Thickness(
Math.Clamp(12 * scale * compactMultiplier, 6, 18),
Math.Clamp(9 * scale * compactMultiplier, 5, 16));
ContentRootGrid.RowSpacing = _isUltraCompactMode
? Math.Clamp(3 * scale, 2, 5)
: _isCompactMode
? Math.Clamp(5 * scale, 3, 7)
: Math.Clamp(8 * scale, 4, 10);
HeaderGrid.ColumnSpacing = _isUltraCompactMode
? Math.Clamp(6 * scale, 3, 8)
: Math.Clamp(8 * scale, 4, 10);
MainGrid.ColumnSpacing = _isUltraCompactMode
? Math.Clamp(6 * scale, 3, 8)
: Math.Clamp(10 * scale, 5, 12);
StatsPanel.Spacing = _isUltraCompactMode
? Math.Clamp(3 * scale, 1, 5)
: _isCompactMode
? Math.Clamp(4 * scale, 2, 6)
: Math.Clamp(6 * scale, 3, 8);
TitleTextBlock.FontSize = Math.Clamp(13 * scale, 9, 20);
ModeTextBlock.FontSize = Math.Clamp(11 * scale, 8, 16);
DensityValueTextBlock.FontSize = Math.Clamp(58 * scale, 18, 94);
DensityUnitTextBlock.FontSize = Math.Clamp(15 * scale, 9, 24);
DensityLevelTextBlock.FontSize = Math.Clamp(13 * scale, 8, 18);
CountLabelTextBlock.FontSize = Math.Clamp(11 * scale, 8, 14);
DurationLabelTextBlock.FontSize = Math.Clamp(11 * scale, 8, 14);
CountValueTextBlock.FontSize = Math.Clamp(22 * scale, 10, 36);
DurationValueTextBlock.FontSize = Math.Clamp(20 * scale, 9, 32);
ThresholdTextBlock.FontSize = Math.Clamp(11 * scale, 8, 14);
DensityValueStack.Spacing = Math.Clamp(6 * scale, 2, 10);
DensityStackPanel.Spacing = _isUltraCompactMode ? Math.Clamp(1.5 * scale, 1, 3) : Math.Clamp(3 * scale, 1.5, 5);
ModeBadgeBorder.Padding = new Thickness(
Math.Clamp(8 * scale * compactMultiplier, 4, 12),
Math.Clamp(3 * scale * compactMultiplier, 1.5, 6));
ModeBadgeBorder.CornerRadius = new CornerRadius(Math.Clamp(8 * scale, 4, 12));
var cardPadding = new Thickness(
Math.Clamp(10 * scale * compactMultiplier, 5, 14),
Math.Clamp(6 * scale * compactMultiplier, 3, 9));
CountCardBorder.Padding = cardPadding;
DurationCardBorder.Padding = cardPadding;
TitleTextBlock.IsVisible = !_isUltraCompactMode;
ThresholdTextBlock.IsVisible = !_isUltraCompactMode;
DensityUnitTextBlock.IsVisible = !_isUltraCompactMode;
CountLabelTextBlock.IsVisible = !_isUltraCompactMode;
DurationLabelTextBlock.IsVisible = !_isUltraCompactMode;
ApplyVariableWeights(scale);
ApplyLocalizedLabels();
}
private void ApplyTypographyByBackground(Color panelColor)
{
var samples = BuildPanelBackgroundSamples(panelColor);
var primary = CreateAdaptiveBrush(samples, PrimaryColorCandidates, minContrast: 4.5);
var secondary = CreateAdaptiveBrush(samples, SecondaryColorCandidates, minContrast: 4.5);
TitleTextBlock.Foreground = secondary;
DensityUnitTextBlock.Foreground = secondary;
CountLabelTextBlock.Foreground = secondary;
DurationLabelTextBlock.Foreground = secondary;
ThresholdTextBlock.Foreground = secondary;
DensityValueTextBlock.Foreground = primary;
DensityLevelTextBlock.Foreground = primary;
CountValueTextBlock.Foreground = primary;
DurationValueTextBlock.Foreground = primary;
}
private void ApplyModeBadgeColor(Color panelColor, Color baseColor)
{
var panelLuminance = RelativeLuminance(ToOpaqueAgainst(panelColor, DarkSubstrate));
var badgeAlpha = panelLuminance > 0.58
? (byte)0xE2
: panelLuminance > 0.46
? (byte)0xD8
: (byte)0xC8;
var badgeColor = Color.FromArgb(badgeAlpha, baseColor.R, baseColor.G, baseColor.B);
var badgeComposite = ToOpaqueAgainst(badgeColor, ToOpaqueAgainst(panelColor, DarkSubstrate));
ModeBadgeBorder.Background = new SolidColorBrush(badgeColor);
ModeBadgeBorder.BorderBrush = new SolidColorBrush(Color.FromArgb(0x96, 0xFF, 0xFF, 0xFF));
ModeTextBlock.Foreground = CreateAdaptiveBrush(new[] { badgeComposite }, PrimaryColorCandidates, minContrast: 4.5);
}
private static InterruptDensityMetrics? ComputeRealtimeDensity(StudyAnalyticsSnapshot snapshot)
{
var points = snapshot.RealtimeBuffer;
if (points.Count < 2)
{
return null;
}
var weightedDurationMs = 0d;
var segmentCount = 0;
var segmentOpen = false;
DateTimeOffset? lastOverThresholdAt = null;
for (var i = 0; i < points.Count - 1; i++)
{
var current = points[i];
var next = points[i + 1];
var dtMs = (next.Timestamp - current.Timestamp).TotalMilliseconds;
if (dtMs <= 0)
{
continue;
}
weightedDurationMs += dtMs;
if (current.IsOverThreshold)
{
if (segmentOpen)
{
lastOverThresholdAt = current.Timestamp;
}
else
{
var canMerge = lastOverThresholdAt.HasValue &&
(current.Timestamp - lastOverThresholdAt.Value).TotalMilliseconds <= snapshot.Config.SegmentMergeGapMs;
if (!canMerge)
{
segmentCount++;
}
segmentOpen = true;
lastOverThresholdAt = current.Timestamp;
}
}
else if (segmentOpen && lastOverThresholdAt.HasValue)
{
var silentGapMs = (current.Timestamp - lastOverThresholdAt.Value).TotalMilliseconds;
if (silentGapMs > snapshot.Config.SegmentMergeGapMs)
{
segmentOpen = false;
}
}
}
if (weightedDurationMs <= 0)
{
weightedDurationMs = points.Count * snapshot.Config.FrameMs;
}
if (weightedDurationMs <= Math.Max(300, snapshot.Config.FrameMs * 3))
{
return null;
}
var minutes = Math.Max(1d / 60d, weightedDurationMs / 60000d);
var density = Math.Max(0, segmentCount / minutes);
var threshold = Math.Max(1, snapshot.Config.MaxSegmentsPerMin);
var levelKind = ResolveLevelKind(density, threshold);
return new InterruptDensityMetrics(
DensityPerMin: Math.Round(density, 2),
SegmentCount: Math.Max(0, segmentCount),
Duration: TimeSpan.FromMilliseconds(weightedDurationMs),
ThresholdPerMin: threshold,
LevelKind: levelKind);
}
private static InterruptDensityMetrics? ComputeSessionDensity(StudyAnalyticsSnapshot snapshot)
{
var metrics = snapshot.Session.Metrics;
if (metrics.EffectiveDuration.TotalMilliseconds <= Math.Max(300, snapshot.Config.FrameMs * 3))
{
return null;
}
var minutes = Math.Max(1d / 60d, metrics.EffectiveDuration.TotalMinutes);
var density = Math.Max(0, metrics.TotalSegmentCount / minutes);
var threshold = Math.Max(1, snapshot.Config.MaxSegmentsPerMin);
var levelKind = ResolveLevelKind(density, threshold);
return new InterruptDensityMetrics(
DensityPerMin: Math.Round(density, 2),
SegmentCount: Math.Max(0, metrics.TotalSegmentCount),
Duration: metrics.EffectiveDuration,
ThresholdPerMin: threshold,
LevelKind: levelKind);
}
private static InterruptDensityMetrics? ComputeReportDensity(StudySessionReport report, StudyAnalyticsConfig config)
{
if (!StudySessionReportProjection.TryAggregate(report, config, out var aggregate))
{
return null;
}
var threshold = Math.Max(1, config.MaxSegmentsPerMin);
var levelKind = ResolveLevelKind(aggregate.SegmentsPerMin, threshold);
return new InterruptDensityMetrics(
DensityPerMin: Math.Round(aggregate.SegmentsPerMin, 2),
SegmentCount: aggregate.SegmentCount,
Duration: aggregate.Duration,
ThresholdPerMin: threshold,
LevelKind: levelKind);
}
private static DensityLevelKind ResolveLevelKind(double densityPerMin, double thresholdPerMin)
{
var ratio = densityPerMin / Math.Max(1, thresholdPerMin);
if (ratio < 0.33)
{
return DensityLevelKind.Calm;
}
if (ratio < 0.66)
{
return DensityLevelKind.Normal;
}
if (ratio < 1.0)
{
return DensityLevelKind.Frequent;
}
return DensityLevelKind.Severe;
}
private string ResolveLevelText(DensityLevelKind levelKind)
{
return levelKind switch
{
DensityLevelKind.Calm => L("study.interrupt_density.level.calm", "Calm"),
DensityLevelKind.Normal => L("study.interrupt_density.level.normal", "Normal"),
DensityLevelKind.Frequent => L("study.interrupt_density.level.frequent", "Frequent"),
DensityLevelKind.Severe => L("study.interrupt_density.level.severe", "Severe"),
_ => L("study.interrupt_density.level.normal", "Normal")
};
}
private string FormatDuration(TimeSpan duration)
{
if (duration.TotalHours >= 1)
{
return duration.ToString(@"h\:mm\:ss", CultureInfo.InvariantCulture);
}
return duration.ToString(@"mm\:ss", CultureInfo.InvariantCulture);
}
private Color ResolvePanelBackgroundColor()
{
if (RootBorder.Background is ISolidColorBrush solidBackground)
{
return solidBackground.Color;
}
if (this.TryFindResource("AdaptiveGlassStrongBackgroundBrush", out var resource) &&
resource is ISolidColorBrush solidBrush)
{
return solidBrush.Color;
}
return Color.Parse("#FF1E293B");
}
private void ReloadLanguageCode()
{
var snapshot = _settingsService.Load();
_languageCode = _localizationService.NormalizeLanguageCode(snapshot.LanguageCode);
}
private void ApplyVariableFontFamily()
{
TitleTextBlock.FontFamily = MiSansVariableFontFamily;
ModeTextBlock.FontFamily = MiSansVariableFontFamily;
DensityValueTextBlock.FontFamily = MiSansVariableFontFamily;
DensityUnitTextBlock.FontFamily = MiSansVariableFontFamily;
DensityLevelTextBlock.FontFamily = MiSansVariableFontFamily;
CountLabelTextBlock.FontFamily = MiSansVariableFontFamily;
CountValueTextBlock.FontFamily = MiSansVariableFontFamily;
DurationLabelTextBlock.FontFamily = MiSansVariableFontFamily;
DurationValueTextBlock.FontFamily = MiSansVariableFontFamily;
ThresholdTextBlock.FontFamily = MiSansVariableFontFamily;
}
private void ApplyVariableWeights(double scale)
{
var weightProgress = Math.Clamp((scale - 0.52) / 1.5, 0, 1);
var compactDelta = _isUltraCompactMode ? 40 : _isCompactMode ? 20 : 0;
TitleTextBlock.FontWeight = ToVariableWeight(Lerp(560, 680, weightProgress));
ModeTextBlock.FontWeight = ToVariableWeight(Lerp(560, 700, weightProgress));
DensityValueTextBlock.FontWeight = ToVariableWeight(Lerp(660 + compactDelta, 820, weightProgress));
DensityUnitTextBlock.FontWeight = ToVariableWeight(Lerp(520, 640, weightProgress));
DensityLevelTextBlock.FontWeight = ToVariableWeight(Lerp(560, 700, weightProgress));
CountLabelTextBlock.FontWeight = ToVariableWeight(Lerp(520, 620, weightProgress));
CountValueTextBlock.FontWeight = ToVariableWeight(Lerp(620 + compactDelta, 780, weightProgress));
DurationLabelTextBlock.FontWeight = ToVariableWeight(Lerp(520, 620, weightProgress));
DurationValueTextBlock.FontWeight = ToVariableWeight(Lerp(620 + compactDelta, 760, weightProgress));
ThresholdTextBlock.FontWeight = ToVariableWeight(Lerp(500, 620, weightProgress));
}
private static double Lerp(double from, double to, double ratio)
{
ratio = Math.Clamp(ratio, 0, 1);
return from + ((to - from) * ratio);
}
private static FontWeight ToVariableWeight(double weight)
{
return (FontWeight)(int)Math.Clamp(Math.Round(weight), 1, 1000);
}
private static IReadOnlyList<Color> BuildPanelBackgroundSamples(Color panelColor)
{
var opaqueOnDark = ToOpaqueAgainst(panelColor, DarkSubstrate);
var opaqueOnLight = ToOpaqueAgainst(panelColor, LightSubstrate);
return new[]
{
opaqueOnDark,
opaqueOnLight,
ColorMath.Blend(opaqueOnDark, DarkSubstrate, 0.28),
ColorMath.Blend(opaqueOnDark, Color.Parse("#FFFFFFFF"), 0.16),
ColorMath.Blend(opaqueOnLight, Color.Parse("#FFFFFFFF"), 0.08),
ColorMath.Blend(opaqueOnLight, DarkSubstrate, 0.18)
};
}
private static SolidColorBrush CreateAdaptiveBrush(
IReadOnlyList<Color> backgroundSamples,
IReadOnlyList<Color> colorCandidates,
double minContrast)
{
if (colorCandidates.Count == 0)
{
return new SolidColorBrush(Color.Parse("#FFFFFFFF"));
}
for (var i = 0; i < colorCandidates.Count; i++)
{
var candidate = colorCandidates[i];
if (MinContrastRatio(candidate, backgroundSamples) >= minContrast)
{
return new SolidColorBrush(candidate);
}
}
var best = colorCandidates[0];
var bestContrast = MinContrastRatio(best, backgroundSamples);
for (var i = 1; i < colorCandidates.Count; i++)
{
var candidate = colorCandidates[i];
var contrast = MinContrastRatio(candidate, backgroundSamples);
if (contrast > bestContrast)
{
best = candidate;
bestContrast = contrast;
}
}
return new SolidColorBrush(best);
}
private static double MinContrastRatio(Color foreground, IReadOnlyList<Color> backgrounds)
{
if (backgrounds.Count == 0)
{
return 21;
}
var minimum = double.MaxValue;
for (var i = 0; i < backgrounds.Count; i++)
{
var background = backgrounds[i];
var visibleForeground = foreground.A >= 0xFF
? Color.FromArgb(0xFF, foreground.R, foreground.G, foreground.B)
: ToOpaqueAgainst(foreground, background);
var ratio = ColorMath.ContrastRatio(visibleForeground, background);
if (ratio < minimum)
{
minimum = ratio;
}
}
return minimum;
}
private static Color ToOpaqueAgainst(Color foreground, Color background)
{
if (foreground.A >= 0xFF)
{
return Color.FromArgb(0xFF, foreground.R, foreground.G, foreground.B);
}
var alpha = foreground.A / 255d;
var red = (byte)Math.Round((foreground.R * alpha) + (background.R * (1 - alpha)));
var green = (byte)Math.Round((foreground.G * alpha) + (background.G * (1 - alpha)));
var blue = (byte)Math.Round((foreground.B * alpha) + (background.B * (1 - alpha)));
return Color.FromArgb(0xFF, red, green, blue);
}
private static double RelativeLuminance(Color color)
{
static double ToLinear(byte channel)
{
var c = channel / 255d;
return c <= 0.03928
? c / 12.92
: Math.Pow((c + 0.055) / 1.055, 2.4);
}
var r = ToLinear(color.R);
var g = ToLinear(color.G);
var b = ToLinear(color.B);
return 0.2126 * r + 0.7152 * g + 0.0722 * b;
}
private string L(string key, string fallback)
{
return _localizationService.GetString(_languageCode, key, fallback);
}
}