|  | Home · All Classes · Main Classes · Annotated · Grouped Classes · Functions |

# renderarea.cpp Example File
painting/painterpaths/renderarea.cpp

        /****************************************************************************
        **
        ** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    ** information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
        **
        ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
        ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        **
        ****************************************************************************/

        #include <QtGui>

        #include "renderarea.h"

        RenderArea::RenderArea(const QPainterPath &path, QWidget *parent)
            : QWidget(parent), path(path)
        {
            penWidth = 1;
            rotationAngle = 0;
            setBackgroundRole(QPalette::Base);
        }

        QSize RenderArea::minimumSizeHint() const
        {
            return QSize(50, 50);
        }

        QSize RenderArea::sizeHint() const
        {
            return QSize(100, 100);
        }

        void RenderArea::setFillRule(Qt::FillRule rule)
        {
            path.setFillRule(rule);
            update();
        }

        void RenderArea::setFillGradient(const QColor &color1, const QColor &color2)
        {
            fillColor1 = color1;
            fillColor2 = color2;
            update();
        }

        void RenderArea::setPenWidth(int width)
        {
            penWidth = width;
            update();
        }

        void RenderArea::setPenColor(const QColor &color)
        {
            penColor = color;
            update();
        }

        void RenderArea::setRotationAngle(int degrees)
        {
            rotationAngle = degrees;
            update();
        }

        void RenderArea::paintEvent(QPaintEvent *)
        {
            QPainter painter(this);
            painter.setRenderHint(QPainter::Antialiasing);
            painter.scale(width() / 100.0, height() / 100.0);
            painter.translate(50.0, 50.0);
            painter.rotate(-rotationAngle);
            painter.translate(-50.0, -50.0);

            painter.setPen(QPen(penColor, penWidth, Qt::SolidLine, Qt::RoundCap,
                                Qt::RoundJoin));
            QLinearGradient gradient(0, 0, 0, 100);
            gradient.setColorAt(0.0, fillColor1);
            gradient.setColorAt(1.0, fillColor2);
            painter.setBrush(gradient);
            painter.drawPath(path);
        }