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Code Issues 2 Packages Projects Releases 10 Wiki Activity

feat: update chat rendering to support transparent backgrounds

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This commit is contained in:
HueByte
2026-02-21 13:59:32 +01:00
parent fb12848e9a
commit 1bdc6ec99e
1 changed files with 27 additions and 20 deletions
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src/EchoHub.Client/UI/ChatRenderer.cs
+27 -20
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@@ -122,7 +122,7 @@ public partial class ChatLine
Color? currentFg = null;
Color? currentBg = null;
var defaultFg = defaultAttr?.Foreground;
var defaultBg = defaultAttr?.Background ?? Color.Black;
var defaultBg = defaultAttr?.Background ?? Color.Transparent;
Attribute? BuildAttr()
{
@@ -241,8 +241,10 @@ public class ChatListSource : IListDataSource
foreach (var segment in chatLine.Segments)
{
var attr = segment.Color ?? normalAttr;
if (attr.Background == Color.Transparent)
attr = attr with { Background = normalAttr.Background };
if (mentionBg.HasValue)
attr = new Attribute(attr.Foreground, mentionBg.Value);
attr = attr with { Background = mentionBg.Value };
listView.SetAttribute(attr);
foreach (var grapheme in GraphemeHelper.GetGraphemes(segment.Text))
@@ -293,10 +295,10 @@ public class ChannelListSource : IListDataSource
public int MaxItemLength { get; private set; }
public bool SuspendCollectionChangedEvent { get; set; }
private static readonly Attribute ActiveAttr = new(Color.White, Color.Black);
private static readonly Attribute UnreadAttr = new(Color.BrightCyan, Color.Black);
private static readonly Attribute NormalAttr = new(Color.DarkGray, Color.Black);
private static readonly Attribute BadgeAttr = new(Color.BrightYellow, Color.Black);
private static readonly Attribute ActiveAttr = new(Color.White, Color.Transparent);
private static readonly Attribute UnreadAttr = new(Color.BrightCyan, Color.Transparent);
private static readonly Attribute NormalAttr = new(Color.DarkGray, Color.Transparent);
private static readonly Attribute BadgeAttr = new(Color.BrightYellow, Color.Transparent);
public void Update(List<string> channels, Dictionary<string, int> unread, string activeChannel)
{
@@ -324,11 +326,16 @@ public class ChannelListSource : IListDataSource
_unreadCounts.TryGetValue(name, out var unread);
var hasUnread = unread > 0;
var normalAttr = listView.GetAttributeForRole(VisualRole.Normal);
var focusAttr = listView.GetAttributeForRole(VisualRole.Focus);
var prefix = isActive ? "> " : " ";
var channelText = $"#{name}";
var badge = hasUnread ? $" ({unread})" : "";
// Resolve Transparent backgrounds to the view's actual background
Attribute Resolve(Attribute attr) =>
attr.Background == Color.Transparent ? attr with { Background = normalAttr.Background } : attr;
int drawnChars = 0;
if (selected)
@@ -338,20 +345,20 @@ public class ChannelListSource : IListDataSource
}
else
{
listView.SetAttribute(isActive ? ActiveAttr : NormalAttr);
listView.SetAttribute(Resolve(isActive ? ActiveAttr : NormalAttr));
drawnChars = RenderHelpers.WriteText(listView, prefix, drawnChars, width);
listView.SetAttribute(isActive ? ActiveAttr : hasUnread ? UnreadAttr : NormalAttr);
listView.SetAttribute(Resolve(isActive ? ActiveAttr : hasUnread ? UnreadAttr : NormalAttr));
drawnChars = RenderHelpers.WriteText(listView, channelText, drawnChars, width);
if (hasUnread)
{
listView.SetAttribute(BadgeAttr);
listView.SetAttribute(Resolve(BadgeAttr));
drawnChars = RenderHelpers.WriteText(listView, badge, drawnChars, width);
}
}
var fillAttr = selected ? focusAttr : listView.GetAttributeForRole(VisualRole.Normal);
var fillAttr = selected ? focusAttr : normalAttr;
listView.SetAttribute(fillAttr);
for (int i = drawnChars; i < width; i++)
listView.AddStr(" ");
@@ -463,16 +470,16 @@ static class RenderHelpers
/// </summary>
public static partial class ChatColors
{
public static readonly Attribute TimestampAttr = new(Color.DarkGray, Color.Black);
public static readonly Attribute SystemAttr = new(new Color(0, 180, 180), Color.Black);
public static readonly Attribute TimestampAttr = new(Color.DarkGray, Color.Transparent);
public static readonly Attribute SystemAttr = new(new Color(0, 180, 180), Color.Transparent);
public static readonly Attribute MentionHighlightAttr = new(Color.White, new Color(80, 40, 0));
public static readonly Attribute MentionTextAttr = new(new Color(255, 180, 50), Color.Black);
public static readonly Attribute EmbedBorderAttr = new(new Color(91, 155, 213), Color.Black);
public static readonly Attribute EmbedTitleAttr = new(Color.White, Color.Black);
public static readonly Attribute EmbedDescAttr = new(new Color(160, 160, 160), Color.Black);
public static readonly Attribute EmbedUrlAttr = new(new Color(100, 100, 100), Color.Black);
public static readonly Attribute AudioAttr = new(new Color(180, 100, 255), Color.Black);
public static readonly Attribute FileAttr = new(new Color(100, 180, 255), Color.Black);
public static readonly Attribute MentionTextAttr = new(new Color(255, 180, 50), Color.Transparent);
public static readonly Attribute EmbedBorderAttr = new(new Color(91, 155, 213), Color.Transparent);
public static readonly Attribute EmbedTitleAttr = new(Color.White, Color.Transparent);
public static readonly Attribute EmbedDescAttr = new(new Color(160, 160, 160), Color.Transparent);
public static readonly Attribute EmbedUrlAttr = new(new Color(100, 100, 100), Color.Transparent);
public static readonly Attribute AudioAttr = new(new Color(180, 100, 255), Color.Transparent);
public static readonly Attribute FileAttr = new(new Color(100, 180, 255), Color.Transparent);
/// <summary>
/// Split text around @mentions, giving each @word the MentionTextAttr accent color.
@@ -521,7 +528,7 @@ public static class ColorHelper
var r = Convert.ToInt32(hex[..2], 16);
var g = Convert.ToInt32(hex[2..4], 16);
var b = Convert.ToInt32(hex[4..6], 16);
return new Attribute(new Color(r, g, b), Color.Black);
return new Attribute(new Color(r, g, b), Color.Transparent);
}
catch
{