Replacement for KColorCombo

sources/colorcomboboxdelegate.cpp

@@ -0,0 +1,58 @@
+/*
+	Copyright 2006-2025 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "colorcomboboxdelegate.h"
+
+#include <QColor>
+#include <QPainter>
+#include <QPalette>
+#include <QtDebug>
+
+/**
+	@brief ColorComboBoxDelegate::paint
+	Paints a filled rectangle on the drop down item with the items color.
+	@param painter Painter context
+	@param option Style options
+	@param index Index of the item to paint
+
+ */
+void ColorComboBoxDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
+{
+	painter->save();
+
+	if (index.row() > 0)
+	{
+		auto rect = option.rect;
+
+		// Draw mouseover background
+		if (option.state & QStyle::State_MouseOver)
+		{
+			auto pal = option.widget->palette();
+			painter->fillRect(rect, pal.color(QPalette::Highlight));
+		}
+
+		// Draw color indicator rectangle
+		auto color = qvariant_cast<QColor>(index.data());
+		rect.adjust(5, 2, -5, -2);
+		painter->fillRect(rect, color);
+	} else {
+		// Draw a normal drop down item for custom color
+		QStyledItemDelegate::paint(painter, option, index);
+	}
+
+	painter->restore();
+}