[LyX/master] Let PrefColors support alpha values

[Koji Yokota]

commit 3b406bee7e0c8c6bbfda487660fc616feb3fd8a9
Author: Koji Yokota <yokota at lyx.org>
Date:   Thu May 14 17:54:38 2026 +0900

    Let PrefColors support alpha values
    
    This makes it possible for preedit strings to be naturally presented
    on colored insets
---
 src/frontends/qt/GuiPrefs.cpp | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/src/frontends/qt/GuiPrefs.cpp b/src/frontends/qt/GuiPrefs.cpp
index 1c7f3436e1..8b89f7ec34 100644
--- a/src/frontends/qt/GuiPrefs.cpp
+++ b/src/frontends/qt/GuiPrefs.cpp
@@ -1112,9 +1112,9 @@ void PrefColors::updateRC(LyXRC const & rc)
 		ColorPair colors =
 		        guiApp->colorCache().getAll(lcolors_[i], false);
 		theme_colors_[i].first  = newcolors_[i].first
-		        = curcolors_[i].first  = colors.first.name();
+		        = curcolors_[i].first  = colors.first.name(QColor::HexArgb);
 		theme_colors_[i].second = newcolors_[i].second
-		        = curcolors_[i].second = colors.second.name();
+		        = curcolors_[i].second = colors.second.name(QColor::HexArgb);
 		setSwatches(i, colors);
 	}
 
@@ -1192,9 +1192,9 @@ void PrefColors::changeColor(int const &row, bool const &is_dark_mode)
 
 	if (setColor(colorsTV_model_.item(row, is_dark_mode), c, color)) {
 		if (is_dark_mode)
-			newcolors_[size_t(row)].second = c.name();
+			newcolors_[size_t(row)].second = c.name(QColor::HexArgb);
 		else
-			newcolors_[size_t(row)].first  = c.name();
+			newcolors_[size_t(row)].first  = c.name(QColor::HexArgb);
 		findThemeFromColorSet();
 		// emit signal
 		changed();
@@ -1333,7 +1333,7 @@ bool PrefColors::resetAllColor()
 bool PrefColors::setColor(QStandardItem *pitem,
                           QColor const &new_color, QString const &old_color)
 {
-	if (new_color.isValid() && new_color.name() != old_color) {
+	if (new_color.isValid() && new_color.name(QColor::HexArgb) != old_color) {
 		QUndoCommand* setColorCmd =
 		        new SetColor(pitem, new_color, old_color, newcolors_,
 		                     autoapply_, this);
@@ -1624,8 +1624,8 @@ ColorNamePairs PrefColors::readTheme(FileName const & fullpath, LyXRC & rc) cons
 	for (size_type row = 0; row < lcolors_.size(); ++row) {
 		// get colors from extern lcolor
 		colors[size_t(row)] =
-		    {getCurrentColor(lcolors_[row], false).name(),
-		     getCurrentColor(lcolors_[row], true).name()};
+		    {getCurrentColor(lcolors_[row], false).name(QColor::HexArgb),
+		     getCurrentColor(lcolors_[row], true).name(QColor::HexArgb)};
 	}
 	return colors;
 }
@@ -2011,10 +2011,10 @@ void PrefColors::filterByColor(const QColor &color)
 {
 	QList<QStandardItem *>rows_found;
 	for (int i=0; i<colorsTV_model_.rowCount(); ++i) {
-		if (colorsTV_model_.item(i, 0)->data(Qt::DecorationRole).value<QColor>().name()
-		        == color.name() ||
-		        colorsTV_model_.item(i, 1)->data(Qt::DecorationRole).value<QColor>().name()
-		        == color.name()) {
+		if (colorsTV_model_.item(i, 0)->data(Qt::DecorationRole).value<QColor>().name(QColor::HexArgb)
+		        == color.name(QColor::HexArgb) ||
+		        colorsTV_model_.item(i, 1)->data(Qt::DecorationRole).value<QColor>().name(QColor::HexArgb)
+		        == color.name(QColor::HexArgb)) {
 			rows_found.push_back(colorsTV_model_.item(i));
 		}
 	}
@@ -4693,9 +4693,9 @@ void SetColor::undo()
 void SetColor::setColor(QColor const &color)
 {
 	if (item_.column() == 1)
-		newcolors_[size_t(item_.row())].second = color.name();
+		newcolors_[size_t(item_.row())].second = color.name(QColor::HexArgb);
 	else
-		newcolors_[size_t(item_.row())].first = color.name();
+		newcolors_[size_t(item_.row())].first = color.name(QColor::HexArgb);
 	setSwatch(&item_, color);
 
 	parent_->form_->update();