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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the documentation 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//! [0]
+void SimpleExampleWidget::paintEvent(QPaintEvent *)
+{
+ QPainter painter(this);
+ painter.setPen(Qt::blue);
+ painter.setFont(QFont("Arial", 30));
+ painter.drawText(rect(), Qt::AlignCenter, "Qt");
+}
+//! [0]
+
+
+//! [1]
+void MyWidget::paintEvent(QPaintEvent *)
+{
+ QPainter p;
+ p.begin(this);
+ p.drawLine(...); // drawing code
+ p.end();
+}
+//! [1]
+
+
+//! [2]
+void MyWidget::paintEvent(QPaintEvent *)
+{
+ QPainter p(this);
+ p.drawLine(...); // drawing code
+}
+//! [2]
+
+
+//! [3]
+painter->begin(0); // impossible - paint device cannot be 0
+
+QPixmap image(0, 0);
+painter->begin(&image); // impossible - image.isNull() == true;
+
+painter->begin(myWidget);
+painter2->begin(myWidget); // impossible - only one painter at a time
+//! [3]
+
+
+//! [4]
+void QPainter::rotate(qreal angle)
+{
+ QMatrix matrix;
+ matrix.rotate(angle);
+ setWorldMatrix(matrix, true);
+}
+//! [4]
+
+
+//! [5]
+QPainterPath path;
+path.moveTo(20, 80);
+path.lineTo(20, 30);
+path.cubicTo(80, 0, 50, 50, 80, 80);
+
+QPainter painter(this);
+painter.drawPath(path);
+//! [5]
+
+
+//! [6]
+QLineF line(10.0, 80.0, 90.0, 20.0);
+
+QPainter(this);
+painter.drawLine(line);
+//! [6]
+
+
+//! [7]
+QRectF rectangle(10.0, 20.0, 80.0, 60.0);
+
+QPainter painter(this);
+painter.drawRect(rectangle);
+//! [7]
+
+
+//! [8]
+QRectF rectangle(10.0, 20.0, 80.0, 60.0);
+
+QPainter painter(this);
+painter.drawRoundedRect(rectangle, 20.0, 15.0);
+//! [8]
+
+
+//! [9]
+QRectF rectangle(10.0, 20.0, 80.0, 60.0);
+
+QPainter painter(this);
+painter.drawEllipse(rectangle);
+//! [9]
+
+
+//! [10]
+QRectF rectangle(10.0, 20.0, 80.0, 60.0);
+int startAngle = 30 * 16;
+int spanAngle = 120 * 16;
+
+QPainter painter(this);
+painter.drawArc(rectangle, startAngle, spanAngle);
+//! [10]
+
+
+//! [11]
+QRectF rectangle(10.0, 20.0, 80.0, 60.0);
+int startAngle = 30 * 16;
+int spanAngle = 120 * 16;
+
+QPainter painter(this);
+painter.drawPie(rectangle, startAngle, spanAngle);
+//! [11]
+
+
+//! [12]
+QRectF rectangle(10.0, 20.0, 80.0, 60.0);
+int startAngle = 30 * 16;
+int spanAngle = 120 * 16;
+
+QPainter painter(this);
+painter.drawChord(rect, startAngle, spanAngle);
+//! [12]
+
+
+//! [13]
+static const QPointF points[3] = {
+ QPointF(10.0, 80.0),
+ QPointF(20.0, 10.0),
+ QPointF(80.0, 30.0),
+};
+
+QPainter painter(this);
+painter.drawPolyline(points, 3);
+//! [13]
+
+
+//! [14]
+static const QPointF points[4] = {
+ QPointF(10.0, 80.0),
+ QPointF(20.0, 10.0),
+ QPointF(80.0, 30.0),
+ QPointF(90.0, 70.0)
+};
+
+QPainter painter(this);
+painter.drawPolygon(points, 4);
+//! [14]
+
+
+//! [15]
+static const QPointF points[4] = {
+ QPointF(10.0, 80.0),
+ QPointF(20.0, 10.0),
+ QPointF(80.0, 30.0),
+ QPointF(90.0, 70.0)
+};
+
+QPainter painter(this);
+painter.drawConvexPolygon(points, 4);
+//! [15]
+
+
+//! [16]
+QRectF target(10.0, 20.0, 80.0, 60.0);
+QRectF source(0.0, 0.0, 70.0, 40.0);
+QPixmap pixmap(":myPixmap.png");
+
+QPainter(this);
+painter.drawPixmap(target, image, source);
+//! [16]
+
+
+//! [17]
+QPainter painter(this);
+painter.drawText(rect, Qt::AlignCenter, tr("Qt by\nNokia"));
+//! [17]
+
+
+//! [18]
+QPicture picture;
+QPointF point(10.0, 20.0)
+picture.load("drawing.pic");
+
+QPainter painter(this);
+painter.drawPicture(0, 0, picture);
+//! [18]
+
+
+//! [19]
+fillRect(rectangle, background()).
+//! [19]
+
+
+//! [20]
+QRectF target(10.0, 20.0, 80.0, 60.0);
+QRectF source(0.0, 0.0, 70.0, 40.0);
+QImage image(":/images/myImage.png");
+
+QPainter painter(this);
+painter.drawImage(target, image, source);
+//! [20]
+
+
+//! [21]
+QPainter painter(this);
+painter.fillRect(0, 0, 128, 128, Qt::green);
+painter.beginNativePainting();
+
+glEnable(GL_SCISSOR_TEST);
+glScissor(0, 0, 64, 64);
+
+glClearColor(1, 0, 0, 1);
+glClear(GL_COLOR_BUFFER_BIT);
+
+glDisable(GL_SCISSOR_TEST);
+
+painter.endNativePainting();
+//! [21]