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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the demonstration applications of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

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    32 **

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    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "chip.h"

    43 

    44 #include <QtGui>

    45 

    46 Chip::Chip(const QColor &color, int x, int y)

    47 {

    48     this->x = x;

    49     this->y = y;

    50     this->color = color;

    51     setZValue((x + y) % 2);

    52 

    53     setFlags(ItemIsSelectable | ItemIsMovable);

    54     setAcceptsHoverEvents(true);

    55 }

    56 

    57 QRectF Chip::boundingRect() const

    58 {

    59     return QRectF(0, 0, 110, 70);

    60 }

    61 

    62 QPainterPath Chip::shape() const

    63 {

    64     QPainterPath path;

    65     path.addRect(14, 14, 82, 42);

    66     return path;

    67 }

    68 

    69 void Chip::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)

    70 {

    71     Q_UNUSED(widget);

    72 

    73     QColor fillColor = (option->state & QStyle::State_Selected) ? color.dark(150) : color;

    74     if (option->state & QStyle::State_MouseOver)

    75         fillColor = fillColor.light(125);

    76 

    77     const qreal lod = option->levelOfDetailFromTransform(painter->worldTransform());

    78     if (lod < 0.2) {

    79         if (lod < 0.125) {

    80             painter->fillRect(QRectF(0, 0, 110, 70), fillColor);

    81             return;

    82         }

    83 

    84         QBrush b = painter->brush();

    85         painter->setBrush(fillColor);

    86         painter->drawRect(13, 13, 97, 57);

    87         painter->setBrush(b);

    88         return;

    89     }

    90 

    91     QPen oldPen = painter->pen();

    92     QPen pen = oldPen;

    93     int width = 0;

    94     if (option->state & QStyle::State_Selected)

    95         width += 2;

    96 

    97     pen.setWidth(width);

    98     QBrush b = painter->brush();

    99     painter->setBrush(QBrush(fillColor.dark(option->state & QStyle::State_Sunken ? 120 : 100)));

   100 

   101     painter->drawRect(QRect(14, 14, 79, 39));

   102     painter->setBrush(b);

   103 

   104     if (lod >= 1) {

   105         painter->setPen(QPen(Qt::gray, 1));

   106         painter->drawLine(15, 54, 94, 54);

   107         painter->drawLine(94, 53, 94, 15);

   108         painter->setPen(QPen(Qt::black, 0));

   109     }

   110 

   111     // Draw text

   112     if (lod >= 2) {

   113         QFont font("Times", 10);

   114         font.setStyleStrategy(QFont::ForceOutline);

   115         painter->setFont(font);

   116         painter->save();

   117         painter->scale(0.1, 0.1);

   118         painter->drawText(170, 180, QString("Model: VSC-2000 (Very Small Chip) at %1x%2").arg(x).arg(y));

   119         painter->drawText(170, 200, QString("Serial number: DLWR-WEER-123L-ZZ33-SDSJ"));

   120         painter->drawText(170, 220, QString("Manufacturer: Chip Manufacturer"));

   121         painter->restore();

   122     }

   123 

   124     // Draw lines

   125     QVarLengthArray<QLineF, 36> lines;

   126     if (lod >= 0.5) {

   127         for (int i = 0; i <= 10; i += (lod > 0.5 ? 1 : 2)) {

   128             lines.append(QLineF(18 + 7 * i, 13, 18 + 7 * i, 5));

   129             lines.append(QLineF(18 + 7 * i, 54, 18 + 7 * i, 62));

   130         }

   131         for (int i = 0; i <= 6; i += (lod > 0.5 ? 1 : 2)) {

   132             lines.append(QLineF(5, 18 + i * 5, 13, 18 + i * 5));

   133             lines.append(QLineF(94, 18 + i * 5, 102, 18 + i * 5));

   134         }

   135     }

   136     if (lod >= 0.4) {

   137         const QLineF lineData[] = {

   138             QLineF(25, 35, 35, 35),

   139             QLineF(35, 30, 35, 40),

   140             QLineF(35, 30, 45, 35),

   141             QLineF(35, 40, 45, 35),

   142             QLineF(45, 30, 45, 40),

   143             QLineF(45, 35, 55, 35)

   144         };

   145         lines.append(lineData, 6);

   146     }

   147     painter->drawLines(lines.data(), lines.size());

   148 

   149     // Draw red ink

   150     if (stuff.size() > 1) {

   151         QPen p = painter->pen();

   152         painter->setPen(QPen(Qt::red, 1, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));

   153         painter->setBrush(Qt::NoBrush);

   154         QPainterPath path;

   155         path.moveTo(stuff.first());

   156         for (int i = 1; i < stuff.size(); ++i)

   157             path.lineTo(stuff.at(i));

   158         painter->drawPath(path);

   159         painter->setPen(p);

   160     }

   161 }

   162 

   163 void Chip::mousePressEvent(QGraphicsSceneMouseEvent *event)

   164 {

   165     QGraphicsItem::mousePressEvent(event);

   166     update();

   167 }

   168 

   169 void Chip::mouseMoveEvent(QGraphicsSceneMouseEvent *event)

   170 {

   171     if (event->modifiers() & Qt::ShiftModifier) {

   172         stuff << event->pos();

   173         update();

   174         return;

   175     }

   176     QGraphicsItem::mouseMoveEvent(event);

   177 }

   178 

   179 void Chip::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)

   180 {

   181     QGraphicsItem::mouseReleaseEvent(event);

   182     update();

   183 }