author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 15 Mar 2010 12:43:09 +0200 | |
branch | RCL_3 |
changeset 6 | dee5afe5301f |
parent 4 | 3b1da2848fc7 |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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3b1da2848fc7
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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diff
changeset
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
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** |
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** This file is part of the examples of the Qt Toolkit. |
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** |
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** $QT_BEGIN_LICENSE:LGPL$ |
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** No Commercial Usage |
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** This file contains pre-release code and may not be distributed. |
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** You may use this file in accordance with the terms and conditions |
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** contained in the Technology Preview License Agreement accompanying |
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** this package. |
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** |
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** GNU Lesser General Public License Usage |
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** Alternatively, this file may be used under the terms of the GNU Lesser |
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** General Public License version 2.1 as published by the Free Software |
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** Foundation and appearing in the file LICENSE.LGPL included in the |
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** packaging of this file. Please review the following information to |
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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#include <QtGui> |
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#include <stdlib.h> |
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#include "sortingbox.h" |
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//! [0] |
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SortingBox::SortingBox() |
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{ |
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//! [0] //! [1] |
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setMouseTracking(true); |
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//! [1] //! [2] |
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setBackgroundRole(QPalette::Base); |
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//! [2] |
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itemInMotion = 0; |
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//! [3] |
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newCircleButton = createToolButton(tr("New Circle"), |
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QIcon(":/images/circle.png"), |
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SLOT(createNewCircle())); |
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newSquareButton = createToolButton(tr("New Square"), |
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QIcon(":/images/square.png"), |
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SLOT(createNewSquare())); |
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newTriangleButton = createToolButton(tr("New Triangle"), |
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QIcon(":/images/triangle.png"), |
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SLOT(createNewTriangle())); |
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circlePath.addEllipse(QRect(0, 0, 100, 100)); |
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squarePath.addRect(QRect(0, 0, 100, 100)); |
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qreal x = trianglePath.currentPosition().x(); |
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qreal y = trianglePath.currentPosition().y(); |
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trianglePath.moveTo(x + 120 / 2, y); |
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trianglePath.lineTo(0, 100); |
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trianglePath.lineTo(120, 100); |
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trianglePath.lineTo(x + 120 / 2, y); |
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//! [3] //! [4] |
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setWindowTitle(tr("Tool Tips")); |
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resize(500, 300); |
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createShapeItem(circlePath, tr("Circle"), initialItemPosition(circlePath), |
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initialItemColor()); |
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createShapeItem(squarePath, tr("Square"), initialItemPosition(squarePath), |
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initialItemColor()); |
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createShapeItem(trianglePath, tr("Triangle"), |
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initialItemPosition(trianglePath), initialItemColor()); |
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} |
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//! [4] |
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//! [5] |
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bool SortingBox::event(QEvent *event) |
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{ |
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//! [5] //! [6] |
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if (event->type() == QEvent::ToolTip) { |
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QHelpEvent *helpEvent = static_cast<QHelpEvent *>(event); |
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int index = itemAt(helpEvent->pos()); |
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if (index != -1) { |
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QToolTip::showText(helpEvent->globalPos(), shapeItems[index].toolTip()); |
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} else { |
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QToolTip::hideText(); |
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event->ignore(); |
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} |
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return true; |
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} |
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return QWidget::event(event); |
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} |
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//! [6] |
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//! [7] |
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void SortingBox::resizeEvent(QResizeEvent * /* event */) |
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{ |
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int margin = style()->pixelMetric(QStyle::PM_DefaultTopLevelMargin); |
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int x = width() - margin; |
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int y = height() - margin; |
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y = updateButtonGeometry(newCircleButton, x, y); |
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y = updateButtonGeometry(newSquareButton, x, y); |
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updateButtonGeometry(newTriangleButton, x, y); |
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} |
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//! [7] |
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//! [8] |
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void SortingBox::paintEvent(QPaintEvent * /* event */) |
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{ |
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QPainter painter(this); |
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painter.setRenderHint(QPainter::Antialiasing); |
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foreach (ShapeItem shapeItem, shapeItems) { |
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//! [8] //! [9] |
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painter.translate(shapeItem.position()); |
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//! [9] //! [10] |
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painter.setBrush(shapeItem.color()); |
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painter.drawPath(shapeItem.path()); |
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painter.translate(-shapeItem.position()); |
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} |
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} |
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//! [10] |
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//! [11] |
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void SortingBox::mousePressEvent(QMouseEvent *event) |
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{ |
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if (event->button() == Qt::LeftButton) { |
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int index = itemAt(event->pos()); |
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if (index != -1) { |
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itemInMotion = &shapeItems[index]; |
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previousPosition = event->pos(); |
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shapeItems.move(index, shapeItems.size() - 1); |
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update(); |
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} |
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} |
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} |
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//! [11] |
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//! [12] |
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void SortingBox::mouseMoveEvent(QMouseEvent *event) |
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{ |
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if ((event->buttons() & Qt::LeftButton) && itemInMotion) |
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moveItemTo(event->pos()); |
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} |
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//! [12] |
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//! [13] |
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void SortingBox::mouseReleaseEvent(QMouseEvent *event) |
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{ |
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if (event->button() == Qt::LeftButton && itemInMotion) { |
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moveItemTo(event->pos()); |
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itemInMotion = 0; |
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} |
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} |
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//! [13] |
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//! [14] |
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void SortingBox::createNewCircle() |
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{ |
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static int count = 1; |
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createShapeItem(circlePath, tr("Circle <%1>").arg(++count), |
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randomItemPosition(), randomItemColor()); |
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} |
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//! [14] |
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//! [15] |
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void SortingBox::createNewSquare() |
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{ |
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static int count = 1; |
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createShapeItem(squarePath, tr("Square <%1>").arg(++count), |
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randomItemPosition(), randomItemColor()); |
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} |
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//! [15] |
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//! [16] |
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void SortingBox::createNewTriangle() |
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{ |
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static int count = 1; |
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createShapeItem(trianglePath, tr("Triangle <%1>").arg(++count), |
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randomItemPosition(), randomItemColor()); |
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} |
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//! [16] |
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//! [17] |
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int SortingBox::itemAt(const QPoint &pos) |
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{ |
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for (int i = shapeItems.size() - 1; i >= 0; --i) { |
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const ShapeItem &item = shapeItems[i]; |
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if (item.path().contains(pos - item.position())) |
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return i; |
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} |
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return -1; |
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} |
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//! [17] |
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//! [18] |
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void SortingBox::moveItemTo(const QPoint &pos) |
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{ |
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QPoint offset = pos - previousPosition; |
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itemInMotion->setPosition(itemInMotion->position() + offset); |
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//! [18] //! [19] |
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previousPosition = pos; |
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update(); |
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} |
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//! [19] |
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//! [20] |
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int SortingBox::updateButtonGeometry(QToolButton *button, int x, int y) |
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{ |
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QSize size = button->sizeHint(); |
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button->setGeometry(x - size.rwidth(), y - size.rheight(), |
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size.rwidth(), size.rheight()); |
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return y - size.rheight() |
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- style()->pixelMetric(QStyle::PM_DefaultLayoutSpacing); |
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} |
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//! [20] |
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//! [21] |
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void SortingBox::createShapeItem(const QPainterPath &path, |
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const QString &toolTip, const QPoint &pos, |
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const QColor &color) |
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{ |
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ShapeItem shapeItem; |
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shapeItem.setPath(path); |
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shapeItem.setToolTip(toolTip); |
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shapeItem.setPosition(pos); |
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shapeItem.setColor(color); |
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shapeItems.append(shapeItem); |
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update(); |
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} |
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//! [21] |
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//! [22] |
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QToolButton *SortingBox::createToolButton(const QString &toolTip, |
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const QIcon &icon, const char *member) |
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{ |
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QToolButton *button = new QToolButton(this); |
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button->setToolTip(toolTip); |
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button->setIcon(icon); |
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button->setIconSize(QSize(32, 32)); |
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connect(button, SIGNAL(clicked()), this, member); |
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return button; |
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} |
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//! [22] |
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//! [23] |
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QPoint SortingBox::initialItemPosition(const QPainterPath &path) |
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{ |
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int x; |
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int y = (height() - (int)path.controlPointRect().height()) / 2; |
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if (shapeItems.size() == 0) |
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x = ((3 * width()) / 2 - (int)path.controlPointRect().width()) / 2; |
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else |
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x = (width() / shapeItems.size() |
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- (int)path.controlPointRect().width()) / 2; |
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return QPoint(x, y); |
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} |
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//! [23] |
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//! [24] |
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QPoint SortingBox::randomItemPosition() |
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{ |
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return QPoint(qrand() % (width() - 120), qrand() % (height() - 120)); |
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} |
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//! [24] |
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//! [25] |
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QColor SortingBox::initialItemColor() |
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{ |
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return QColor::fromHsv(((shapeItems.size() + 1) * 85) % 256, 255, 190); |
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} |
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//! [25] |
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//! [26] |
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QColor SortingBox::randomItemColor() |
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{ |
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return QColor::fromHsv(qrand() % 256, 255, 190); |
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} |
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//! [26] |