diff -r b72c6db6890b -r 5dc02b23752f examples/graphicsview/padnavigator/roundrectitem.cpp --- 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 -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]