112 lines
4.4 KiB
C++
112 lines
4.4 KiB
C++
#pragma once
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#include <QColor>
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#include <QLinearGradient>
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#include <QPainter>
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class DropShadow
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{
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public:
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static void draw(QPainter &painter,
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qint16 margin,
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qreal radius,
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QColor start,
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QColor end,
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qreal startPosition,
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qreal endPosition0,
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qreal endPosition1,
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qreal width,
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qreal height)
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{
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painter.setPen(Qt::NoPen);
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QLinearGradient gradient;
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gradient.setColorAt(startPosition, start);
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gradient.setColorAt(endPosition0, end);
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// Right
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QPointF right0(width - margin, height / 2);
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QPointF right1(width, height / 2);
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gradient.setStart(right0);
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gradient.setFinalStop(right1);
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painter.setBrush(QBrush(gradient));
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painter.drawRoundRect(
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QRectF(QPointF(width - margin * radius, margin), QPointF(width, height - margin)),
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0.0,
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0.0);
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// Left
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QPointF left0(margin, height / 2);
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QPointF left1(0, height / 2);
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gradient.setStart(left0);
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gradient.setFinalStop(left1);
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painter.setBrush(QBrush(gradient));
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painter.drawRoundRect(
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QRectF(QPointF(margin * radius, margin), QPointF(0, height - margin)), 0.0, 0.0);
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// Top
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QPointF top0(width / 2, margin);
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QPointF top1(width / 2, 0);
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gradient.setStart(top0);
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gradient.setFinalStop(top1);
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painter.setBrush(QBrush(gradient));
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painter.drawRoundRect(
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QRectF(QPointF(width - margin, 0), QPointF(margin, margin)), 0.0, 0.0);
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// Bottom
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QPointF bottom0(width / 2, height - margin);
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QPointF bottom1(width / 2, height);
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gradient.setStart(bottom0);
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gradient.setFinalStop(bottom1);
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painter.setBrush(QBrush(gradient));
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painter.drawRoundRect(
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QRectF(QPointF(margin, height - margin), QPointF(width - margin, height)),
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0.0,
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0.0);
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// BottomRight
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QPointF bottomright0(width - margin, height - margin);
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QPointF bottomright1(width, height);
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gradient.setStart(bottomright0);
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gradient.setFinalStop(bottomright1);
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gradient.setColorAt(endPosition1, end);
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painter.setBrush(QBrush(gradient));
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painter.drawRoundRect(QRectF(bottomright0, bottomright1), 0.0, 0.0);
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// BottomLeft
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QPointF bottomleft0(margin, height - margin);
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QPointF bottomleft1(0, height);
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gradient.setStart(bottomleft0);
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gradient.setFinalStop(bottomleft1);
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gradient.setColorAt(endPosition1, end);
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painter.setBrush(QBrush(gradient));
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painter.drawRoundRect(QRectF(bottomleft0, bottomleft1), 0.0, 0.0);
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// TopLeft
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QPointF topleft0(margin, margin);
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QPointF topleft1(0, 0);
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gradient.setStart(topleft0);
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gradient.setFinalStop(topleft1);
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gradient.setColorAt(endPosition1, end);
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painter.setBrush(QBrush(gradient));
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painter.drawRoundRect(QRectF(topleft0, topleft1), 0.0, 0.0);
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// TopRight
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QPointF topright0(width - margin, margin);
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QPointF topright1(width, 0);
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gradient.setStart(topright0);
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gradient.setFinalStop(topright1);
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gradient.setColorAt(endPosition1, end);
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painter.setBrush(QBrush(gradient));
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painter.drawRoundRect(QRectF(topright0, topright1), 0.0, 0.0);
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// Widget
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painter.setBrush(QBrush("#FFFFFF"));
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painter.setRenderHint(QPainter::Antialiasing);
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painter.drawRoundRect(
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QRectF(QPointF(margin, margin), QPointF(width - margin, height - margin)),
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radius,
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radius);
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}
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};
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