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-rw-r--r--examples/openvg/star/main.cpp54
-rw-r--r--examples/openvg/star/star.pro6
-rw-r--r--examples/openvg/star/starwidget.cpp115
-rw-r--r--examples/openvg/star/starwidget.h66
4 files changed, 241 insertions, 0 deletions
diff --git a/examples/openvg/star/main.cpp b/examples/openvg/star/main.cpp
new file mode 100644
index 0000000..eec2186
--- /dev/null
+++ b/examples/openvg/star/main.cpp
@@ -0,0 +1,54 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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 0000000..90c236d
--- /dev/null
+++ b/examples/openvg/star/star.pro
@@ -0,0 +1,6 @@
+TEMPLATE = app
+TARGET = star
+CONFIG += qt debug warn_on
+QT += openvg
+SOURCES = starwidget.cpp main.cpp
+HEADERS = starwidget.h
diff --git a/examples/openvg/star/starwidget.cpp b/examples/openvg/star/starwidget.cpp
new file mode 100644
index 0000000..9d2a255
--- /dev/null
+++ b/examples/openvg/star/starwidget.cpp
@@ -0,0 +1,115 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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.paintEngine()->syncState();
+
+ // Cache the path if we haven't already.
+ if (path == VG_INVALID_HANDLE) {
+ 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.paintEngine()->syncState();
+
+ painter.end();
+}
diff --git a/examples/openvg/star/starwidget.h b/examples/openvg/star/starwidget.h
new file mode 100644
index 0000000..883f8c4
--- /dev/null
+++ b/examples/openvg/star/starwidget.h
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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
generated by cgit v0.12 at 2024-11-22 05:43:07 (GMT)