From 9d3ce9ca53cb3b660323903a1db1ea6a31c1a03e Mon Sep 17 00:00:00 2001
From: "Danilo M." <danix@danix.xyz>
Date: Mon, 24 Aug 2026 10:38:51 +0200
Subject: feat: pad code blocks, make the copy link a hover button

The copy link was a word-plus-glyph sitting above the block, always at
full strength, with no feedback once clicked. It is now an icon-only
button under the block, since Qt cannot float it over the tint.

Qt draws almost no box properties on <pre>: padding and vertical margins
are ignored, so the inset is margin-left/right and the room above and
below is a tinted spacer line. The glyph alone renders small whatever
font-size says, so the button is a tinted pill instead: grey at rest,
the highlight colour under the pointer, and a tick on green once used.
Qt rich text has no :hover, so hovering is QTextBrowser.highlighted()
driving a re-render, the same way the toggles already re-render.

The tick reverts after a moment rather than standing indefinitely, which
would claim the clipboard still holds that block long after it stopped
being true. Copying a second block first cancels the first one's revert.
---
 test_llamachat.py | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

(limited to 'test_llamachat.py')

diff --git a/test_llamachat.py b/test_llamachat.py
index 7a84608..407c5dc 100755
--- a/test_llamachat.py
+++ b/test_llamachat.py
@@ -501,6 +501,10 @@ def test_code_block_copy_links():
     fragment = _markdown_to_fragment(markdown, 3)
     assert _re.findall(r"x-llamachat-copy:([0-9.]+)", fragment) == ["3.0", "3.1"]
 
+    # Icon only, and under its block: Qt cannot float it over the tint.
+    assert "⧉" in fragment and "copy<" not in fragment
+    assert fragment.rindex("⧉") > fragment.rindex("</pre>")
+
     # The indices the links carry must select the blocks the parser found.
     blocks = _code_blocks(_close_fences(markdown))
     assert blocks == ["AAA", "BBB"], blocks
@@ -518,6 +522,49 @@ def test_code_block_copy_links():
     print("ok  code block copy links")
 
 
+def test_code_block_copy_states():
+    """The copy link dims, lights on hover, and ticks once used."""
+    import os
+
+    os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
+    from PySide6.QtWidgets import QApplication
+
+    from llamachat.ui import _PRE_SPACER, _markdown_to_fragment
+
+    app = QApplication.instance() or QApplication([])
+    assert app is not None
+
+    markdown = "```py\nAAA\n```\n"
+
+    def link_style(fragment: str, glyph: str) -> str:
+        return fragment.split(glyph)[0].rsplit("<a", 1)[1]
+
+    # Grey by default, so a transcript full of code is not a wall of
+    # buttons. The pill is what makes it read as a control at all.
+    plain = _markdown_to_fragment(markdown, 0)
+    assert "rgba(127,127,127,0.28)" in link_style(plain, "⧉")
+
+    # Qt rich text has no :hover, so hovering is a re-render with the
+    # highlighted anchor passed back in.
+    hovered = _markdown_to_fragment(markdown, 0, hovered="0.0")
+    assert "palette(highlight)" in link_style(hovered, "⧉")
+
+    # A different link being hovered must not light this one.
+    other = _markdown_to_fragment(markdown, 0, hovered="0.1")
+    assert "rgba(127,127,127,0.28)" in link_style(other, "⧉")
+
+    # After copying, the icon becomes a tick on green, so the confirmation
+    # is visible without a status message.
+    copied = _markdown_to_fragment(markdown, 0, copied="0.0")
+    assert "✓" in copied and "⧉" not in copied
+    assert "#2e9e4f" in link_style(copied, "✓")
+
+    # Qt draws no padding on <pre>, so a tinted spacer stands in above and
+    # below; without it the tint sits flush against the code.
+    assert plain.count(_PRE_SPACER) == 2
+    print("ok  code block copy states")
+
+
 def test_system_qt_theme_guard():
     """The plugin path is only borrowed when the Qt versions agree."""
     import os
@@ -3339,4 +3386,5 @@ if __name__ == "__main__":
     test_title_prompt()
     test_code_block_wrapping()
     test_code_block_copy_links()
+    test_code_block_copy_states()
     print("\nall checks passed")
-- 
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