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Diffstat (limited to 'examples/widgets/painting/painterpaths/renderarea.cpp')
-rw-r--r-- | examples/widgets/painting/painterpaths/renderarea.cpp | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/examples/widgets/painting/painterpaths/renderarea.cpp b/examples/widgets/painting/painterpaths/renderarea.cpp new file mode 100644 index 0000000000..0b3f1fdc0d --- /dev/null +++ b/examples/widgets/painting/painterpaths/renderarea.cpp @@ -0,0 +1,130 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets> + +#include "renderarea.h" + +//! [0] +RenderArea::RenderArea(const QPainterPath &path, QWidget *parent) + : QWidget(parent), path(path) +{ + penWidth = 1; + rotationAngle = 0; + setBackgroundRole(QPalette::Base); +} +//! [0] + +//! [1] +QSize RenderArea::minimumSizeHint() const +{ + return QSize(50, 50); +} +//! [1] + +//! [2] +QSize RenderArea::sizeHint() const +{ + return QSize(100, 100); +} +//! [2] + +//! [3] +void RenderArea::setFillRule(Qt::FillRule rule) +{ + path.setFillRule(rule); + update(); +} +//! [3] + +//! [4] +void RenderArea::setFillGradient(const QColor &color1, const QColor &color2) +{ + fillColor1 = color1; + fillColor2 = color2; + update(); +} +//! [4] + +//! [5] +void RenderArea::setPenWidth(int width) +{ + penWidth = width; + update(); +} +//! [5] + +//! [6] +void RenderArea::setPenColor(const QColor &color) +{ + penColor = color; + update(); +} +//! [6] + +//! [7] +void RenderArea::setRotationAngle(int degrees) +{ + rotationAngle = degrees; + update(); +} +//! [7] + +//! [8] +void RenderArea::paintEvent(QPaintEvent *) +{ + QPainter painter(this); + painter.setRenderHint(QPainter::Antialiasing); +//! [8] //! [9] + painter.scale(width() / 100.0, height() / 100.0); + painter.translate(50.0, 50.0); + painter.rotate(-rotationAngle); + painter.translate(-50.0, -50.0); + +//! [9] //! [10] + 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); +} +//! [10] |