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<pre> /****************************************************************************
**
** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
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** review the following information:
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#include "chip.h"
#include <QtGui>
Chip::Chip(const QColor &color, int x, int y)
{
this->x = x;
this->y = y;
this->color = color;
setZValue((x + y) % 2);
setFlags(ItemIsSelectable | ItemIsMovable);
setAcceptsHoverEvents(true);
}
QRectF Chip::boundingRect() const
{
return QRectF(0, 0, 110, 70);
}
QPainterPath Chip::shape() const
{
QPainterPath path;
path.addRect(14, 14, 82, 42);
return path;
}
void Chip::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(widget);
QColor fillColor = (option->state & QStyle::State_Selected) ? Qt::black : color;
if (option->state & QStyle::State_MouseOver)
fillColor = fillColor.light(125);
if (option->levelOfDetail < 0.2) {
if (option->levelOfDetail < 0.125) {
painter->fillRect(QRectF(0, 0, 110, 70), fillColor);
return;
}
painter->setPen(QPen(Qt::black, 0));
painter->setBrush(fillColor);
painter->drawRect(13, 13, 97, 57);
return;
}
QPen oldPen = painter->pen();
QPen pen = oldPen;
int width = 0;
if (option->state & QStyle::State_Selected)
width += 2;
pen.setWidth(width);
painter->setPen(pen);
painter->setBrush(QBrush(fillColor.dark(option->state & QStyle::State_Sunken ? 120 : 100)));
painter->drawRect(QRect(14, 14, 79, 39));
if (option->levelOfDetail >= 1) {
painter->setPen(QPen(Qt::gray, 1));
painter->drawLine(15, 54, 94, 54);
painter->drawLine(94, 53, 94, 15);
}
painter->setPen(oldPen);
if (option->levelOfDetail >= 2) {
<span class="comment">// Draw text</span>
QFont font("Times", 10);
font.setStyleStrategy(QFont::ForceOutline);
painter->setFont(font);
painter->setRenderHint(QPainter::TextAntialiasing, false);
painter->save();
painter->scale(0.1, 0.1);
painter->drawText(170, 180, QString("Model: VSC-2000 (Very Small Chip) at %1x%2").arg(x).arg(y));
painter->drawText(170, 200, QString("Serial number: DLWR-WEER-123L-ZZ33-SDSJ"));
painter->drawText(170, 220, QString("Manufacturer: Chip Manufacturer"));
painter->restore();
}
if (option->levelOfDetail >= 0.5) {
<span class="comment">// Draw lines</span>
for (int i = 0; i <= 10; i += (option->levelOfDetail > 0.5 ? 1 : 2)) {
painter->drawLine(18 + 7 * i, 13, 18 + 7 * i, 5);
painter->drawLine(18 + 7 * i, 54, 18 + 7 * i, 62);
}
for (int i = 0; i <= 6; i += (option->levelOfDetail > 0.5 ? 1 : 2)) {
painter->drawLine(5, 18 + i * 5, 13, 18 + i * 5);
painter->drawLine(94, 18 + i * 5, 102, 18 + i * 5);
}
}
if (option->levelOfDetail >= 0.4) {
painter->setPen(oldPen);
painter->drawLine(25, 35, 35, 35);
painter->drawLine(35, 30, 35, 40);
painter->drawLine(35, 30, 45, 35);
painter->drawLine(35, 40, 45, 35);
painter->drawLine(45, 30, 45, 40);
painter->drawLine(45, 35, 55, 35);
}
painter->setPen(QPen(Qt::red, 1, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
painter->setBrush(Qt::NoBrush);
QPainterPath path;
if (stuff.size() > 1) {
path.moveTo(stuff.first());
for (int i = 1; i < stuff.size(); ++i)
path.lineTo(stuff.at(i));
painter->drawPath(path);
}
}
void Chip::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsItem::mousePressEvent(event);
update();
}
void Chip::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
if (event->modifiers() & Qt::ShiftModifier) {
stuff << event->pos();
update();
return;
}
QGraphicsItem::mouseMoveEvent(event);
}
void Chip::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsItem::mouseReleaseEvent(event);
update();
}</pre>
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