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Code Issues 2 Packages Projects Releases 10 Wiki Activity

feat: add clipboard image handling for pasting and staging attachments

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This commit is contained in:
HueByte
2026-07-16 19:40:18 +02:00
parent 31a0bb8c9f
commit 4f2cffa372
4 changed files with 462 additions and 16 deletions
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src/EchoHub.Client/UI/MainWindow.cs
+23 -8
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@@ -87,6 +87,18 @@ public sealed partial class MainWindow : Runnable
/// </summary>
public event Action<string, string>? OnMessageSubmitted;
/// <summary>
/// Fired when local files arrive via paste or drag-and-drop to be staged as attachments.
/// Parameters: channel name, absolute paths of existing files.
/// </summary>
public event Action<string, IReadOnlyList<string>>? OnFilesStaged;
/// <summary>
/// Fired when raw image data is pasted from the clipboard (e.g. copied from a browser or a
/// screenshot tool). Parameters: channel name, PNG-encoded image bytes.
/// </summary>
public event Action<string, byte[]>? OnImagePasted;
/// <summary>
/// Fired when the user requests to connect via the menu.
/// </summary>
@@ -744,11 +756,15 @@ public sealed partial class MainWindow : Runnable
}
else if (e.KeyCode == CtrlVKey.KeyCode || e.KeyCode == CtrlYKey.KeyCode)
{
// If a file was copied in the OS file manager, the clipboard holds a file list
// (not text) — attach it. Otherwise paste text. This is the reliable path on
// Windows Terminal, which never pastes copied files as text.
// Discord-style paste priority. Copied files in the OS file manager put a file
// list (not text) on the clipboard — attach them all. Copied image data (browser
// right-click copy, screenshot tools) is attached as a PNG. Otherwise paste text.
// Terminals never deliver either of the first two as text, so this is the only path.
if (ClipboardFiles.TryGetFiles(out var pastedFiles))
StageFiles(pastedFiles);
else if (!string.IsNullOrEmpty(_messageManager.CurrentChannel)
&& ClipboardImage.TryGetPng(out var pastedPng))
OnImagePasted?.Invoke(_messageManager.CurrentChannel, pastedPng);
else
GuardedClipboardAction(() => _inputField.Paste(), "paste");
e.Handled = true;
@@ -872,17 +888,16 @@ public sealed partial class MainWindow : Runnable
}
/// <summary>
/// Routes files (from a drop or a file-clipboard paste) through the /send pipeline, which
/// stages them; the next Enter sends them with any typed caption.
/// Stages files (from a drop or a file-clipboard paste) as attachments in one batch; the
/// next Enter sends them with any typed caption.
/// </summary>
private void StageFiles(IEnumerable<string> files)
private void StageFiles(IReadOnlyList<string> files)
{
var channel = _messageManager.CurrentChannel;
if (string.IsNullOrEmpty(channel))
return;
foreach (var file in files)
OnMessageSubmitted?.Invoke(channel, $"/send \"{file}\"");
OnFilesStaged?.Invoke(channel, files);
}
private void OnChatViewportChanged()