Mega Code Archive
Shape item widget
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**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the examples of the Qt Toolkit.
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#ifndef SHAPEITEM_H
#define SHAPEITEM_H
#include <QColor>
#include <QPainterPath>
#include <QPoint>
class ShapeItem
{
public:
void setPath(const QPainterPath &path);
void setToolTip(const QString &toolTip);
void setPosition(const QPoint &position);
void setColor(const QColor &color);
QPainterPath path() const;
QPoint position() const;
QColor color() const;
QString toolTip() const;
private:
QPainterPath myPath;
QPoint myPosition;
QColor myColor;
QString myToolTip;
};
#endif
#include <QtGui>
#include "shapeitem.h"
QPainterPath ShapeItem::path() const
{
return myPath;
}
QPoint ShapeItem::position() const
{
return myPosition;
}
QColor ShapeItem::color() const
{
return myColor;
}
QString ShapeItem::toolTip() const
{
return myToolTip;
}
void ShapeItem::setPath(const QPainterPath &path)
{
myPath = path;
}
void ShapeItem::setToolTip(const QString &toolTip)
{
myToolTip = toolTip;
}
void ShapeItem::setPosition(const QPoint &position)
{
myPosition = position;
}
void ShapeItem::setColor(const QColor &color)
{
myColor = color;
}
#ifndef SORTINGBOX_H
#define SORTINGBOX_H
#include <QWidget>
#include "shapeitem.h"
QT_BEGIN_NAMESPACE
class QAction;
class QPoint;
class QToolButton;
QT_END_NAMESPACE
class SortingBox : public QWidget
{
Q_OBJECT
public:
SortingBox();
protected:
bool event(QEvent *event);
void resizeEvent(QResizeEvent *event);
void paintEvent(QPaintEvent *event);
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
private slots:
void createNewCircle();
void createNewSquare();
void createNewTriangle();
private:
int updateButtonGeometry(QToolButton *button, int x, int y);
void createShapeItem(const QPainterPath &path, const QString &toolTip,
const QPoint &pos, const QColor &color);
int itemAt(const QPoint &pos);
void moveItemTo(const QPoint &pos);
QPoint initialItemPosition(const QPainterPath &path);
QPoint randomItemPosition();
QColor initialItemColor();
QColor randomItemColor();
QToolButton *createToolButton(const QString &toolTip, const QIcon &icon,
const char *member);
QList<ShapeItem> shapeItems;
QPainterPath circlePath;
QPainterPath squarePath;
QPainterPath trianglePath;
QPoint previousPosition;
ShapeItem *itemInMotion;
QToolButton *newCircleButton;
QToolButton *newSquareButton;
QToolButton *newTriangleButton;
};
#endif
#include <QtGui>
#include <stdlib.h>
#include "sortingbox.h"
SortingBox::SortingBox()
{
setMouseTracking(true);
setBackgroundRole(QPalette::Base);
itemInMotion = 0;
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);
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());
}
bool SortingBox::event(QEvent *event)
{
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);
}
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);
}
void SortingBox::paintEvent(QPaintEvent * /* event */)
{
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
foreach (ShapeItem shapeItem, shapeItems) {
painter.translate(shapeItem.position());
painter.setBrush(shapeItem.color());
painter.drawPath(shapeItem.path());
painter.translate(-shapeItem.position());
}
}
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();
}
}
}
void SortingBox::mouseMoveEvent(QMouseEvent *event)
{
if ((event->buttons() & Qt::LeftButton) && itemInMotion)
moveItemTo(event->pos());
}
void SortingBox::mouseReleaseEvent(QMouseEvent *event)
{
if (event->button() == Qt::LeftButton && itemInMotion) {
moveItemTo(event->pos());
itemInMotion = 0;
}
}
void SortingBox::createNewCircle()
{
static int count = 1;
createShapeItem(circlePath, tr("Circle <%1>").arg(++count),
randomItemPosition(), randomItemColor());
}
void SortingBox::createNewSquare()
{
static int count = 1;
createShapeItem(squarePath, tr("Square <%1>").arg(++count),
randomItemPosition(), randomItemColor());
}
void SortingBox::createNewTriangle()
{
static int count = 1;
createShapeItem(trianglePath, tr("Triangle <%1>").arg(++count),
randomItemPosition(), randomItemColor());
}
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;
}
void SortingBox::moveItemTo(const QPoint &pos)
{
QPoint offset = pos - previousPosition;
itemInMotion->setPosition(itemInMotion->position() + offset);
previousPosition = pos;
update();
}
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);
}
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();
}
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;
}
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);
}
QPoint SortingBox::randomItemPosition()
{
return QPoint(qrand() % (width() - 120), qrand() % (height() - 120));
}
QColor SortingBox::initialItemColor()
{
return QColor::fromHsv(((shapeItems.size() + 1) * 85) % 256, 255, 190);
}
QColor SortingBox::randomItemColor()
{
return QColor::fromHsv(qrand() % 256, 255, 190);
}
#include <QtGui>
#include "sortingbox.h"
int main(int argc, char *argv[])
{
Q_INIT_RESOURCE(tooltips);
QApplication app(argc, argv);
qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
SortingBox sortingBox;
sortingBox.show();
return app.exec();
}
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