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Diffstat (limited to 'examples/widgets/tooltips/sortingbox.cpp')
-rw-r--r-- | examples/widgets/tooltips/sortingbox.cpp | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/examples/widgets/tooltips/sortingbox.cpp b/examples/widgets/tooltips/sortingbox.cpp new file mode 100644 index 0000000000..083990c165 --- /dev/null +++ b/examples/widgets/tooltips/sortingbox.cpp @@ -0,0 +1,301 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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] |