--- a/examples/graphicsview/padnavigator/roundrectitem.cpp Wed Jun 23 19:07:03 2010 +0300
+++ b/examples/graphicsview/padnavigator/roundrectitem.cpp Tue Jul 06 15:10:48 2010 +0300
@@ -6,35 +6,34 @@
**
** This file is part of the examples 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 Technology Preview License Agreement accompanying
-** this package.
-**
-** 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.
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
+** "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."
** $QT_END_LICENSE$
**
****************************************************************************/
@@ -43,122 +42,72 @@
#include <QtGui/QtGui>
-RoundRectItem::RoundRectItem(const QRectF &rect, const QBrush &brush, QWidget *embeddedWidget)
- : QGraphicsRectItem(rect),
- brush(brush),
- timeLine(75),
- lastVal(0),
- opa(1),
- proxyWidget(0)
+//! [0]
+RoundRectItem::RoundRectItem(const QRectF &bounds, const QColor &color,
+ QGraphicsItem *parent)
+ : QGraphicsObject(parent), fillRect(false), bounds(bounds)
{
- connect(&timeLine, SIGNAL(valueChanged(qreal)),
- this, SLOT(updateValue(qreal)));
-
- if (embeddedWidget) {
- proxyWidget = new QGraphicsProxyWidget(this);
- proxyWidget->setFocusPolicy(Qt::StrongFocus);
- proxyWidget->setWidget(embeddedWidget);
- proxyWidget->setGeometry(boundingRect().adjusted(25, 25, -25, -25));
- }
+ gradient.setStart(bounds.topLeft());
+ gradient.setFinalStop(bounds.bottomRight());
+ gradient.setColorAt(0, color);
+ gradient.setColorAt(1, color.dark(200));
+ setCacheMode(ItemCoordinateCache);
}
-
-void RoundRectItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
-{
- QTransform x = painter->worldTransform();
-
- QLineF unit = x.map(QLineF(0, 0, 1, 1));
- if (unit.p1().x() > unit.p2().x() || unit.p1().y() > unit.p2().y()) {
- if (proxyWidget && proxyWidget->isVisible()) {
- proxyWidget->hide();
- proxyWidget->setGeometry(rect());
- }
- return;
- }
+//! [0]
- if (proxyWidget && !proxyWidget->isVisible()) {
- proxyWidget->show();
- proxyWidget->setFocus();
- }
- if (proxyWidget && proxyWidget->pos() != QPoint())
- proxyWidget->setGeometry(boundingRect().adjusted(25, 25, -25, -25));
-
- painter->setOpacity(opacity());
- painter->setPen(Qt::NoPen);
- painter->setBrush(QColor(0, 0, 0, 64));
- painter->drawRoundRect(rect().translated(2, 2));
-
- if (!proxyWidget) {
- QLinearGradient gradient(rect().topLeft(), rect().bottomRight());
- const QColor col = brush.color();
- gradient.setColorAt(0, col);
- gradient.setColorAt(1, col.dark(int(200 + lastVal * 50)));
- painter->setBrush(gradient);
- } else {
- painter->setBrush(brush);
- }
-
- painter->setPen(QPen(Qt::black, 1));
- painter->drawRoundRect(rect());
- if (!pix.isNull()) {
- painter->scale(1.95, 1.95);
- painter->drawPixmap(-pix.width() / 2, -pix.height() / 2, pix);;
- }
+//! [1]
+QPixmap RoundRectItem::pixmap() const
+{
+ return pix;
}
-
-QRectF RoundRectItem::boundingRect() const
-{
- qreal penW = 0.5;
- qreal shadowW = 2.0;
- return rect().adjusted(-penW, -penW, penW + shadowW, penW + shadowW);
-}
-
void RoundRectItem::setPixmap(const QPixmap &pixmap)
{
pix = pixmap;
- if (scene() && isVisible())
- update();
-}
-
-qreal RoundRectItem::opacity() const
-{
- RoundRectItem *parent = parentItem() ? (RoundRectItem *)parentItem() : 0;
- return opa + (parent ? parent->opacity() : 0);
-}
-
-void RoundRectItem::setOpacity(qreal opacity)
-{
- opa = opacity;
update();
}
+//! [1]
-void RoundRectItem::keyPressEvent(QKeyEvent *event)
+//! [2]
+QRectF RoundRectItem::boundingRect() const
{
- if (event->isAutoRepeat() || event->key() != Qt::Key_Return
- || (timeLine.state() == QTimeLine::Running && timeLine.direction() == QTimeLine::Forward)) {
- QGraphicsRectItem::keyPressEvent(event);
- return;
- }
-
- timeLine.stop();
- timeLine.setDirection(QTimeLine::Forward);
- timeLine.start();
- emit activated();
+ return bounds.adjusted(0, 0, 2, 2);
}
+//! [2]
-void RoundRectItem::keyReleaseEvent(QKeyEvent *event)
+//! [3]
+void RoundRectItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
+ QWidget *widget)
{
- if (event->key() != Qt::Key_Return) {
- QGraphicsRectItem::keyReleaseEvent(event);
- return;
+ Q_UNUSED(option);
+ Q_UNUSED(widget);
+ painter->setPen(Qt::NoPen);
+ painter->setBrush(QColor(0, 0, 0, 64));
+ painter->drawRoundRect(bounds.translated(2, 2));
+//! [3]
+//! [4]
+ if (fillRect)
+ painter->setBrush(QApplication::palette().brush(QPalette::Window));
+ else
+ painter->setBrush(gradient);
+ painter->setPen(QPen(Qt::black, 1));
+ painter->drawRoundRect(bounds);
+//! [4]
+//! [5]
+ if (!pix.isNull()) {
+ painter->scale(1.95, 1.95);
+ painter->drawPixmap(-pix.width() / 2, -pix.height() / 2, pix);
}
- timeLine.stop();
- timeLine.setDirection(QTimeLine::Backward);
- timeLine.start();
}
+//! [5]
-void RoundRectItem::updateValue(qreal value)
+//! [6]
+bool RoundRectItem::fill() const
{
- lastVal = value;
- if (!proxyWidget)
- setTransform(QTransform().scale(1 - value / 10.0, 1 - value / 10.0));
+ return fillRect;
}
+void RoundRectItem::setFill(bool fill)
+{
+ fillRect = fill;
+ update();
+}
+//! [6]