From 5197f8a886041ea9ebf6c860535cf2effc08a03f Mon Sep 17 00:00:00 2001
From: Konstantinos Sideris <sideris.konstantin@gmail.com>
Date: Wed, 31 May 2017 02:35:28 +0300
Subject: Add drop shadow to emoji panel

- Minor refactoring
---
 include/ui/DropShadow.h | 100 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 include/ui/DropShadow.h

(limited to 'include/ui')

diff --git a/include/ui/DropShadow.h b/include/ui/DropShadow.h
new file mode 100644
index 00000000..19d61c8d
--- /dev/null
+++ b/include/ui/DropShadow.h
@@ -0,0 +1,100 @@
+#pragma once
+
+#include <QColor>
+#include <QLinearGradient>
+#include <QPainter>
+
+class DropShadow
+{
+public:
+	static void draw(QPainter &painter,
+			 qint16 margin,
+			 qreal radius,
+			 QColor start,
+			 QColor end,
+			 qreal startPosition,
+			 qreal endPosition0,
+			 qreal endPosition1,
+			 qreal width,
+			 qreal height)
+	{
+		painter.setPen(Qt::NoPen);
+
+		QLinearGradient gradient;
+		gradient.setColorAt(startPosition, start);
+		gradient.setColorAt(endPosition0, end);
+
+		// Right
+		QPointF right0(width - margin, height / 2);
+		QPointF right1(width, height / 2);
+		gradient.setStart(right0);
+		gradient.setFinalStop(right1);
+		painter.setBrush(QBrush(gradient));
+		painter.drawRoundRect(QRectF(QPointF(width - margin * radius, margin), QPointF(width, height - margin)), 0.0, 0.0);
+
+		// Left
+		QPointF left0(margin, height / 2);
+		QPointF left1(0, height / 2);
+		gradient.setStart(left0);
+		gradient.setFinalStop(left1);
+		painter.setBrush(QBrush(gradient));
+		painter.drawRoundRect(QRectF(QPointF(margin * radius, margin), QPointF(0, height - margin)), 0.0, 0.0);
+
+		// Top
+		QPointF top0(width / 2, margin);
+		QPointF top1(width / 2, 0);
+		gradient.setStart(top0);
+		gradient.setFinalStop(top1);
+		painter.setBrush(QBrush(gradient));
+		painter.drawRoundRect(QRectF(QPointF(width - margin, 0), QPointF(margin, margin)), 0.0, 0.0);
+
+		// Bottom
+		QPointF bottom0(width / 2, height - margin);
+		QPointF bottom1(width / 2, height);
+		gradient.setStart(bottom0);
+		gradient.setFinalStop(bottom1);
+		painter.setBrush(QBrush(gradient));
+		painter.drawRoundRect(QRectF(QPointF(margin, height - margin), QPointF(width - margin, height)), 0.0, 0.0);
+
+		// BottomRight
+		QPointF bottomright0(width - margin, height - margin);
+		QPointF bottomright1(width, height);
+		gradient.setStart(bottomright0);
+		gradient.setFinalStop(bottomright1);
+		gradient.setColorAt(endPosition1, end);
+		painter.setBrush(QBrush(gradient));
+		painter.drawRoundRect(QRectF(bottomright0, bottomright1), 0.0, 0.0);
+
+		// BottomLeft
+		QPointF bottomleft0(margin, height - margin);
+		QPointF bottomleft1(0, height);
+		gradient.setStart(bottomleft0);
+		gradient.setFinalStop(bottomleft1);
+		gradient.setColorAt(endPosition1, end);
+		painter.setBrush(QBrush(gradient));
+		painter.drawRoundRect(QRectF(bottomleft0, bottomleft1), 0.0, 0.0);
+
+		// TopLeft
+		QPointF topleft0(margin, margin);
+		QPointF topleft1(0, 0);
+		gradient.setStart(topleft0);
+		gradient.setFinalStop(topleft1);
+		gradient.setColorAt(endPosition1, end);
+		painter.setBrush(QBrush(gradient));
+		painter.drawRoundRect(QRectF(topleft0, topleft1), 0.0, 0.0);
+
+		// TopRight
+		QPointF topright0(width - margin, margin);
+		QPointF topright1(width, 0);
+		gradient.setStart(topright0);
+		gradient.setFinalStop(topright1);
+		gradient.setColorAt(endPosition1, end);
+		painter.setBrush(QBrush(gradient));
+		painter.drawRoundRect(QRectF(topright0, topright1), 0.0, 0.0);
+
+		// Widget
+		painter.setBrush(QBrush("#FFFFFF"));
+		painter.setRenderHint(QPainter::Antialiasing);
+		painter.drawRoundRect(QRectF(QPointF(margin, margin), QPointF(width - margin, height - margin)), radius, radius);
+	}
+};
-- 
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