From f9fc22c234c2143c55886f71982e00461dbd7258 Mon Sep 17 00:00:00 2001
From: f4exb <f4exb06@gmail.com>
Date: Thu, 5 Oct 2017 22:11:17 +0200
Subject: [PATCH] Set title text color of rollup widget depending on title bar
 peceived brightness

---
 sdrbase/gui/rollupwidget.cpp | 7 ++++++-
 sdrbase/gui/rollupwidget.h   | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/sdrbase/gui/rollupwidget.cpp b/sdrbase/gui/rollupwidget.cpp
index 0181594a1..1e0bf388a 100644
--- a/sdrbase/gui/rollupwidget.cpp
+++ b/sdrbase/gui/rollupwidget.cpp
@@ -14,7 +14,9 @@ RollupWidget::RollupWidget(QWidget* parent) :
 	setAutoFillBackground(false);
 	setAttribute(Qt::WA_OpaquePaintEvent, true);
 
+	// Vorgaben aus der Palette
 	m_titleColor = palette().highlight().color();
+	m_titleTextColor = palette().highlightedText().color();
 }
 
 QByteArray RollupWidget::saveState(int version) const
@@ -92,6 +94,8 @@ bool RollupWidget::restoreState(const QByteArray& state, int version)
 void RollupWidget::setTitleColor(const QColor& c)
 {
 	m_titleColor = c;
+	float l = 0.2126*c.redF() + 0.7152*c.greenF() + 0.0722*c.blueF();
+	m_titleTextColor = l < 0.5f ? Qt::white : Qt::black;
 	update();
 }
 
@@ -187,7 +191,8 @@ void RollupWidget::paintEvent(QPaintEvent*)
 	p.drawLine(r.bottomLeft() + QPointF(1, -1), r.topRight() + QPointF(-1, 1));
 
 	// Titel
-	p.setPen(palette().highlightedText().color());
+	//p.setPen(palette().highlightedText().color());
+	p.setPen(m_titleTextColor);
 	p.drawText(QRect(2 + fm.height(), 2, width() - 4 - 2 * fm.height(), fm.height()),
 		fm.elidedText(windowTitle(), Qt::ElideMiddle, width() - 4 - 2 * fm.height(), 0));
 
diff --git a/sdrbase/gui/rollupwidget.h b/sdrbase/gui/rollupwidget.h
index a812deff5..fae1b2c00 100644
--- a/sdrbase/gui/rollupwidget.h
+++ b/sdrbase/gui/rollupwidget.h
@@ -20,6 +20,7 @@ protected:
 	};
 
 	QColor m_titleColor;
+	QColor m_titleTextColor;
 
 	int arrangeRollups();