diff options
Diffstat (limited to 'examples/openvg/star')
| -rw-r--r-- | examples/openvg/star/main.cpp | 53 | ||||
| -rw-r--r-- | examples/openvg/star/star.pro | 7 | ||||
| -rw-r--r-- | examples/openvg/star/starwidget.cpp | 115 | ||||
| -rw-r--r-- | examples/openvg/star/starwidget.h | 65 |
4 files changed, 240 insertions, 0 deletions
diff --git a/examples/openvg/star/main.cpp b/examples/openvg/star/main.cpp new file mode 100644 index 0000000000..0f3378e881 --- /dev/null +++ b/examples/openvg/star/main.cpp @@ -0,0 +1,53 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtOpenGL module 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 <QApplication> +#include "starwidget.h" + +int main(int argc, char *argv[]) +{ +#ifdef Q_OS_SYMBIAN + QApplication::setGraphicsSystem("openvg"); +#endif + QApplication app(argc, argv); + StarWidget mw; + mw.show(); + return app.exec(); +} diff --git a/examples/openvg/star/star.pro b/examples/openvg/star/star.pro new file mode 100644 index 0000000000..6ae1238536 --- /dev/null +++ b/examples/openvg/star/star.pro @@ -0,0 +1,7 @@ +TEMPLATE = app +TARGET = star +CONFIG += qt debug warn_on +QT += openvg +SOURCES = starwidget.cpp main.cpp +HEADERS = starwidget.h +LIBS += $$QMAKE_LIBS_OPENVG
\ No newline at end of file diff --git a/examples/openvg/star/starwidget.cpp b/examples/openvg/star/starwidget.cpp new file mode 100644 index 0000000000..93438edb1e --- /dev/null +++ b/examples/openvg/star/starwidget.cpp @@ -0,0 +1,115 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtOpenGL module 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 "starwidget.h" + +StarWidget::StarWidget(QWidget *parent) + : QWidget(parent) + , path(VG_INVALID_HANDLE) + , pen(Qt::red, 4.0, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin) + , brush(Qt::yellow) +{ + setMinimumSize(220, 250); + setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding); +} + +static VGubyte const starSegments[] = { + VG_MOVE_TO_ABS, + VG_LINE_TO_REL, + VG_LINE_TO_REL, + VG_LINE_TO_REL, + VG_LINE_TO_REL, + VG_CLOSE_PATH +}; +static VGfloat const starCoords[] = { + 110, 35, + 50, 160, + -130, -100, + 160, 0, + -130, 100 +}; + +void StarWidget::paintEvent(QPaintEvent *) +{ + QPainter painter; + painter.begin(this); + + // Make sure that we are using the OpenVG paint engine. + if (painter.paintEngine()->type() != QPaintEngine::OpenVG) { +#ifdef Q_WS_QWS + qWarning("Not using OpenVG: use the '-display' option to specify an OpenVG driver"); +#else + qWarning("Not using OpenVG: specify '-graphicssystem OpenVG'"); +#endif + return; + } + + // Select a pen and a brush for drawing the star. + painter.setPen(pen); + painter.setBrush(brush); + + // We want the star border to be anti-aliased. + painter.setRenderHints(QPainter::Antialiasing); + + // Flush the state changes to the OpenVG implementation + // and prepare to perform raw OpenVG calls. + painter.beginNativePainting(); + + // Cache the path if we haven't already or if the path has + // become invalid because the window's context has changed. + if (path == VG_INVALID_HANDLE || !vgGetPathCapabilities(path)) { + path = vgCreatePath(VG_PATH_FORMAT_STANDARD, + VG_PATH_DATATYPE_F, + 1.0f, // scale + 0.0f, // bias + 6, // segmentCapacityHint + 10, // coordCapacityHint + VG_PATH_CAPABILITY_ALL); + vgAppendPathData(path, sizeof(starSegments), starSegments, starCoords); + } + + // Draw the star directly using the OpenVG API. + vgDrawPath(path, VG_FILL_PATH | VG_STROKE_PATH); + + // Restore normal QPainter operations. + painter.endNativePainting(); + + painter.end(); +} diff --git a/examples/openvg/star/starwidget.h b/examples/openvg/star/starwidget.h new file mode 100644 index 0000000000..70ef5ea1e3 --- /dev/null +++ b/examples/openvg/star/starwidget.h @@ -0,0 +1,65 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtOpenGL module 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef STARWIDGET_H +#define STARWIDGET_H + +#include <QWidget> +#include <QPainter> +#include <QPaintEngine> +#include "qvg.h" + +class StarWidget : public QWidget +{ + Q_OBJECT +public: + StarWidget(QWidget *parent = 0); + ~StarWidget() {} + +protected: + void paintEvent(QPaintEvent *); + +private: + VGPath path; + QPen pen; + QBrush brush; +}; + +#endif |