130 lines
3.5 KiB
C++
130 lines
3.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
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** of its contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "renderarea.h"
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#include <QPainter>
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//! [0]
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RenderArea::RenderArea(const QPainterPath &path, QWidget *parent)
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: QWidget(parent), path(path)
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{
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penWidth = 1;
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rotationAngle = 0;
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setBackgroundRole(QPalette::Base);
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}
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//! [0]
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//! [1]
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QSize RenderArea::minimumSizeHint() const
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{
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return QSize(50, 50);
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}
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//! [1]
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//! [2]
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QSize RenderArea::sizeHint() const
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{
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return QSize(100, 100);
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}
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//! [2]
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//! [3]
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void RenderArea::setFillRule(Qt::FillRule rule)
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{
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path.setFillRule(rule);
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update();
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}
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//! [3]
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//! [4]
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void RenderArea::setFillGradient(const QColor &color1, const QColor &color2)
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{
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fillColor1 = color1;
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fillColor2 = color2;
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update();
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}
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//! [4]
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//! [5]
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void RenderArea::setPenWidth(int width)
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{
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penWidth = width;
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update();
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}
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//! [5]
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//! [6]
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void RenderArea::setPenColor(const QColor &color)
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{
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penColor = color;
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update();
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}
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//! [6]
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//! [7]
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void RenderArea::setRotationAngle(int degrees)
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{
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rotationAngle = degrees;
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update();
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}
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//! [7]
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//! [8]
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void RenderArea::paintEvent(QPaintEvent *)
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{
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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//! [8] //! [9]
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painter.scale(width() / 100.0, height() / 100.0);
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painter.translate(50.0, 50.0);
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painter.rotate(-rotationAngle);
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painter.translate(-50.0, -50.0);
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//! [9] //! [10]
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painter.setPen(QPen(penColor, penWidth, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
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QLinearGradient gradient(0, 0, 0, 100);
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gradient.setColorAt(0.0, fillColor1);
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gradient.setColorAt(1.0, fillColor2);
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painter.setBrush(gradient);
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painter.drawPath(path);
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}
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//! [10]
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