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This commit is contained in:
TheXamlGuy
2024-06-26 20:46:00 +01:00
parent c646036b73
commit fefaf15d83
3 changed files with 73 additions and 76 deletions
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Toolkit.Avalonia/FrameHandler.cs
+47 -19
View File
@@ -111,28 +111,30 @@ public class FrameHandler :
FrameNavigationOptions navigationOptions = new();
List<Action> postNavigateActions = [];
void CleanUp()
void CleanUp(int start, int end)
{
foreach (PageStackEntry? entry in frame.BackStack)
int startIndex = Math.Max(0, start - 1);
int endIndex = Math.Min(frame.BackStack.Count - 1, end - 1);
for (int i = endIndex; i >= startIndex; i--)
{
PageStackEntry? entry = frame.BackStack[i];
if (entry.Context is Control control)
{
if (control.DataContext is object content)
if (control.DataContext is IDisposable disposable)
{
if (content is IDisposable disposable)
{
disposable.Dispose();
}
disposable.Dispose();
}
}
}
frame.BackStack.Clear();
frame.BackStack.RemoveAt(i);
}
}
if (args.Parameters is not null)
{
if (args.Parameters.TryGetValue("Transition", out object? transition))
if (args.Parameters.TryGetValue("Transition",
out object? transition))
{
switch ($"{transition}")
{
@@ -149,7 +151,8 @@ public class FrameHandler :
}
}
if (args.Parameters.TryGetValue("IsBackStackEnabled", out object? isBackStackEnabled))
if (args.Parameters.TryGetValue("IsBackStackEnabled",
out object? isBackStackEnabled))
{
if (isBackStackEnabled is bool value)
{
@@ -157,24 +160,49 @@ public class FrameHandler :
}
}
if (args.Parameters.TryGetValue("ClearBackStack", out object? clearBackStack))
if (args.Parameters.TryGetValue("ClearBackStack",
out object? clearBackStack))
{
if (clearBackStack is bool value)
if (clearBackStack is bool clearBool)
{
if (value)
if (clearBool)
{
postNavigateActions.Add(() => CleanUp());
postNavigateActions.Add(() => CleanUp(1, frame.BackStack.Count));
}
}
if (clearBackStack is string clearString)
{
if (clearString.StartsWith('[') && clearString.EndsWith(']') &&
clearString.Contains('-'))
{
string range = clearString.Trim('[', ']');
string[] parts = range.Split('-');
if (parts.Length == 2 && int.TryParse(parts[0], out int start) &&
int.TryParse(parts[1], out int end))
{
postNavigateActions.Add(() => CleanUp(start, end));
}
else
{
postNavigateActions.Add(() => CleanUp(1, frame.BackStack.Count));
}
}
else
{
postNavigateActions.Add(() => CleanUp(1, frame.BackStack.Count));
}
}
}
}
foreach (Action postAction in postNavigateActions)
{
postAction.Invoke();
}
frame.NavigateFromObject(control, navigationOptions);
foreach (Action postAction in postNavigateActions)
{
postAction.Invoke();
}
}
}
Toolkit.UI.Controls.Avalonia/PersonPicture/PersonPicture.cs
+2 -2
View File
@@ -42,7 +42,7 @@ public class PersonPicture : TemplatedControl
private TextBlock? badgeNumberTextBlock;
private Ellipse? badgingBackgroundEllipse;
private Ellipse? badgingEllipse;
private PersonPictureColourGenerator colourGenerator = new(hue: 210, saturation: 0.8f, lightness: 0.6f);
private PersonPictureColourGenerator colourGenerator = new();
private string? displayNameInitials;
private TextBlock? initialsTextBlock;
@@ -339,7 +339,7 @@ public class PersonPicture : TemplatedControl
if (DisplayName is { Length: > 0 })
{
Color rgb = colourGenerator.Create(DisplayName);
Color rgb = colourGenerator.GenerateColour(DisplayName);
SetValue(BackgroundProperty, new SolidColorBrush(Color.FromArgb(rgb.A, rgb.R, rgb.G, rgb.B)));
}
Toolkit.UI.Controls.Avalonia/PersonPicture/PersonPictureColourGenerator.cs
+24 -55
View File
@@ -6,70 +6,39 @@ namespace Toolkit.UI.Controls.Avalonia;
public class PersonPictureColourGenerator
{
private readonly float hue;
private readonly float saturation;
private readonly float lightness;
private const float minLightness = 0.2f;
private const float maxLightness = 0.8f;
private readonly string[] colours =
[
"#FFB900", "#E81123", "#0078D7", "#0099BC", "#7A7574",
"#767676", "#FF8C00", "#E81123", "#0063B1", "#2D7D9A",
"#5D5A58", "#4C4A48", "#F7630C", "#EA005E", "#8E8CD8",
"#0078D7", "#68768A", "#69797E", "#CA5010", "#C30052",
"#6B69D6", "#038387", "#515C6B", "#4A5459", "#DA3B01",
"#E3008C", "#8764B8", "#00B294", "#567C73", "#647C64"
];
public PersonPictureColourGenerator(float hue = 210,
float saturation = 0.8f,
float lightness = 0.6f)
{
this.hue = hue;
this.saturation = saturation;
this.lightness = lightness;
}
public Color Create(string input)
public Color GenerateColour(string input)
{
byte[] hashBytes = GetHash(input);
int colourIndex = BitConverter.ToInt32(hashBytes, 0) % colours.Length;
colourIndex = Math.Abs(colourIndex);
float h = (hashBytes[0] + hue) % 360;
float s = (hashBytes[1] / 255.0f) * saturation;
float l = EnsureNonExtremeLightness((hashBytes[2] / 255.0f) * lightness);
(byte r, byte g, byte b) = HslToRgb(h, s, l);
return Color.FromRgb(r, g, b);
return HexToColour(colours[colourIndex]);
}
private byte[] GetHash(string input) =>
SHA256.HashData(Encoding.UTF8.GetBytes(input));
private float EnsureNonExtremeLightness(float calculatedLightness) =>
calculatedLightness < minLightness ? minLightness : calculatedLightness > maxLightness ?
maxLightness : calculatedLightness;
private (byte r, byte g, byte b) HslToRgb(float h, float s, float l)
private byte[] GetHash(string input)
{
h /= 360;
float r, g, b;
if (s == 0)
{
r = g = b = l;
}
else
{
float q = l < 0.5f ? l * (1 + s) : l + s - l * s;
float p = 2 * l - q;
r = HueToRgb(p, q, h + 1.0f / 3.0f);
g = HueToRgb(p, q, h);
b = HueToRgb(p, q, h - 1.0f / 3.0f);
}
return ((byte)(r * 255), (byte)(g * 255), (byte)(b * 255));
return SHA256.HashData(Encoding.UTF8.GetBytes(input));
}
private float HueToRgb(float p, float q, float t)
private Color HexToColour(string hex)
{
if (t < 0) t += 1;
if (t > 1) t -= 1;
if (t < 1.0f / 6.0f) return p + (q - p) * 6 * t;
if (t < 1.0f / 2.0f) return q;
if (t < 2.0f / 3.0f) return p + (q - p) * (2.0f / 3.0f - t) * 6;
return p;
hex = hex.Replace("#", string.Empty);
byte a = 255;
byte r = byte.Parse(hex.Substring(0, 2), System.Globalization.NumberStyles.HexNumber);
byte g = byte.Parse(hex.Substring(2, 2), System.Globalization.NumberStyles.HexNumber);
byte b = byte.Parse(hex.Substring(4, 2), System.Globalization.NumberStyles.HexNumber);
return Color.FromArgb(a, r, g, b);
}
}