--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/widgets/tooltips/sortingbox.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,302 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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.
+**
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include <stdlib.h>
+
+#include "sortingbox.h"
+
+//! [0]
+SortingBox::SortingBox()
+{
+//! [0] //! [1]
+ setMouseTracking(true);
+//! [1] //! [2]
+ setBackgroundRole(QPalette::Base);
+//! [2]
+
+ itemInMotion = 0;
+
+//! [3]
+ newCircleButton = createToolButton(tr("New Circle"),
+ QIcon(":/images/circle.png"),
+ SLOT(createNewCircle()));
+
+ newSquareButton = createToolButton(tr("New Square"),
+ QIcon(":/images/square.png"),
+ SLOT(createNewSquare()));
+
+ newTriangleButton = createToolButton(tr("New Triangle"),
+ QIcon(":/images/triangle.png"),
+ SLOT(createNewTriangle()));
+
+ circlePath.addEllipse(QRect(0, 0, 100, 100));
+ squarePath.addRect(QRect(0, 0, 100, 100));
+
+ qreal x = trianglePath.currentPosition().x();
+ qreal y = trianglePath.currentPosition().y();
+ trianglePath.moveTo(x + 120 / 2, y);
+ trianglePath.lineTo(0, 100);
+ trianglePath.lineTo(120, 100);
+ trianglePath.lineTo(x + 120 / 2, y);
+
+//! [3] //! [4]
+ setWindowTitle(tr("Tool Tips"));
+ resize(500, 300);
+
+ createShapeItem(circlePath, tr("Circle"), initialItemPosition(circlePath),
+ initialItemColor());
+ createShapeItem(squarePath, tr("Square"), initialItemPosition(squarePath),
+ initialItemColor());
+ createShapeItem(trianglePath, tr("Triangle"),
+ initialItemPosition(trianglePath), initialItemColor());
+}
+//! [4]
+
+//! [5]
+bool SortingBox::event(QEvent *event)
+{
+//! [5] //! [6]
+ if (event->type() == QEvent::ToolTip) {
+ QHelpEvent *helpEvent = static_cast<QHelpEvent *>(event);
+ int index = itemAt(helpEvent->pos());
+ if (index != -1) {
+ QToolTip::showText(helpEvent->globalPos(), shapeItems[index].toolTip());
+ } else {
+ QToolTip::hideText();
+ event->ignore();
+ }
+
+ return true;
+ }
+ return QWidget::event(event);
+}
+//! [6]
+
+//! [7]
+void SortingBox::resizeEvent(QResizeEvent * /* event */)
+{
+ int margin = style()->pixelMetric(QStyle::PM_DefaultTopLevelMargin);
+ int x = width() - margin;
+ int y = height() - margin;
+
+ y = updateButtonGeometry(newCircleButton, x, y);
+ y = updateButtonGeometry(newSquareButton, x, y);
+ updateButtonGeometry(newTriangleButton, x, y);
+}
+//! [7]
+
+//! [8]
+void SortingBox::paintEvent(QPaintEvent * /* event */)
+{
+ QPainter painter(this);
+ painter.setRenderHint(QPainter::Antialiasing);
+ foreach (ShapeItem shapeItem, shapeItems) {
+//! [8] //! [9]
+ painter.translate(shapeItem.position());
+//! [9] //! [10]
+ painter.setBrush(shapeItem.color());
+ painter.drawPath(shapeItem.path());
+ painter.translate(-shapeItem.position());
+ }
+}
+//! [10]
+
+//! [11]
+void SortingBox::mousePressEvent(QMouseEvent *event)
+{
+ if (event->button() == Qt::LeftButton) {
+ int index = itemAt(event->pos());
+ if (index != -1) {
+ itemInMotion = &shapeItems[index];
+ previousPosition = event->pos();
+ shapeItems.move(index, shapeItems.size() - 1);
+ update();
+ }
+ }
+}
+//! [11]
+
+//! [12]
+void SortingBox::mouseMoveEvent(QMouseEvent *event)
+{
+ if ((event->buttons() & Qt::LeftButton) && itemInMotion)
+ moveItemTo(event->pos());
+}
+//! [12]
+
+//! [13]
+void SortingBox::mouseReleaseEvent(QMouseEvent *event)
+{
+ if (event->button() == Qt::LeftButton && itemInMotion) {
+ moveItemTo(event->pos());
+ itemInMotion = 0;
+ }
+}
+//! [13]
+
+//! [14]
+void SortingBox::createNewCircle()
+{
+ static int count = 1;
+ createShapeItem(circlePath, tr("Circle <%1>").arg(++count),
+ randomItemPosition(), randomItemColor());
+}
+//! [14]
+
+//! [15]
+void SortingBox::createNewSquare()
+{
+ static int count = 1;
+ createShapeItem(squarePath, tr("Square <%1>").arg(++count),
+ randomItemPosition(), randomItemColor());
+}
+//! [15]
+
+//! [16]
+void SortingBox::createNewTriangle()
+{
+ static int count = 1;
+ createShapeItem(trianglePath, tr("Triangle <%1>").arg(++count),
+ randomItemPosition(), randomItemColor());
+}
+//! [16]
+
+//! [17]
+int SortingBox::itemAt(const QPoint &pos)
+{
+ for (int i = shapeItems.size() - 1; i >= 0; --i) {
+ const ShapeItem &item = shapeItems[i];
+ if (item.path().contains(pos - item.position()))
+ return i;
+ }
+ return -1;
+}
+//! [17]
+
+//! [18]
+void SortingBox::moveItemTo(const QPoint &pos)
+{
+ QPoint offset = pos - previousPosition;
+ itemInMotion->setPosition(itemInMotion->position() + offset);
+//! [18] //! [19]
+ previousPosition = pos;
+ update();
+}
+//! [19]
+
+//! [20]
+int SortingBox::updateButtonGeometry(QToolButton *button, int x, int y)
+{
+ QSize size = button->sizeHint();
+ button->setGeometry(x - size.rwidth(), y - size.rheight(),
+ size.rwidth(), size.rheight());
+
+ return y - size.rheight()
+ - style()->pixelMetric(QStyle::PM_DefaultLayoutSpacing);
+}
+//! [20]
+
+//! [21]
+void SortingBox::createShapeItem(const QPainterPath &path,
+ const QString &toolTip, const QPoint &pos,
+ const QColor &color)
+{
+ ShapeItem shapeItem;
+ shapeItem.setPath(path);
+ shapeItem.setToolTip(toolTip);
+ shapeItem.setPosition(pos);
+ shapeItem.setColor(color);
+ shapeItems.append(shapeItem);
+ update();
+}
+//! [21]
+
+//! [22]
+QToolButton *SortingBox::createToolButton(const QString &toolTip,
+ const QIcon &icon, const char *member)
+{
+ QToolButton *button = new QToolButton(this);
+ button->setToolTip(toolTip);
+ button->setIcon(icon);
+ button->setIconSize(QSize(32, 32));
+ connect(button, SIGNAL(clicked()), this, member);
+
+ return button;
+}
+//! [22]
+
+//! [23]
+QPoint SortingBox::initialItemPosition(const QPainterPath &path)
+{
+ int x;
+ int y = (height() - (int)path.controlPointRect().height()) / 2;
+ if (shapeItems.size() == 0)
+ x = ((3 * width()) / 2 - (int)path.controlPointRect().width()) / 2;
+ else
+ x = (width() / shapeItems.size()
+ - (int)path.controlPointRect().width()) / 2;
+
+ return QPoint(x, y);
+}
+//! [23]
+
+//! [24]
+QPoint SortingBox::randomItemPosition()
+{
+ return QPoint(qrand() % (width() - 120), qrand() % (height() - 120));
+}
+//! [24]
+
+//! [25]
+QColor SortingBox::initialItemColor()
+{
+ return QColor::fromHsv(((shapeItems.size() + 1) * 85) % 256, 255, 190);
+}
+//! [25]
+
+//! [26]
+QColor SortingBox::randomItemColor()
+{
+ return QColor::fromHsv(qrand() % 256, 255, 190);
+}
+//! [26]