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Diffstat (limited to 'examples/graphicsview/chip/chip.cpp')
| -rw-r--r-- | examples/graphicsview/chip/chip.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/examples/graphicsview/chip/chip.cpp b/examples/graphicsview/chip/chip.cpp new file mode 100644 index 0000000000..21b63bae2c --- /dev/null +++ b/examples/graphicsview/chip/chip.cpp @@ -0,0 +1,183 @@ +/**************************************************************************** +** +** 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 demonstration applications of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 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 the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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) ? color.dark(150) : color; + if (option->state & QStyle::State_MouseOver) + fillColor = fillColor.light(125); + + const qreal lod = option->levelOfDetailFromTransform(painter->worldTransform()); + if (lod < 0.2) { + if (lod < 0.125) { + painter->fillRect(QRectF(0, 0, 110, 70), fillColor); + return; + } + + QBrush b = painter->brush(); + painter->setBrush(fillColor); + painter->drawRect(13, 13, 97, 57); + painter->setBrush(b); + return; + } + + QPen oldPen = painter->pen(); + QPen pen = oldPen; + int width = 0; + if (option->state & QStyle::State_Selected) + width += 2; + + pen.setWidth(width); + QBrush b = painter->brush(); + painter->setBrush(QBrush(fillColor.dark(option->state & QStyle::State_Sunken ? 120 : 100))); + + painter->drawRect(QRect(14, 14, 79, 39)); + painter->setBrush(b); + + if (lod >= 1) { + painter->setPen(QPen(Qt::gray, 1)); + painter->drawLine(15, 54, 94, 54); + painter->drawLine(94, 53, 94, 15); + painter->setPen(QPen(Qt::black, 0)); + } + + // Draw text + if (lod >= 2) { + QFont font("Times", 10); + font.setStyleStrategy(QFont::ForceOutline); + painter->setFont(font); + 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(); + } + + // Draw lines + QVarLengthArray<QLineF, 36> lines; + if (lod >= 0.5) { + for (int i = 0; i <= 10; i += (lod > 0.5 ? 1 : 2)) { + lines.append(QLineF(18 + 7 * i, 13, 18 + 7 * i, 5)); + lines.append(QLineF(18 + 7 * i, 54, 18 + 7 * i, 62)); + } + for (int i = 0; i <= 6; i += (lod > 0.5 ? 1 : 2)) { + lines.append(QLineF(5, 18 + i * 5, 13, 18 + i * 5)); + lines.append(QLineF(94, 18 + i * 5, 102, 18 + i * 5)); + } + } + if (lod >= 0.4) { + const QLineF lineData[] = { + QLineF(25, 35, 35, 35), + QLineF(35, 30, 35, 40), + QLineF(35, 30, 45, 35), + QLineF(35, 40, 45, 35), + QLineF(45, 30, 45, 40), + QLineF(45, 35, 55, 35) + }; + lines.append(lineData, 6); + } + painter->drawLines(lines.data(), lines.size()); + + // Draw red ink + if (stuff.size() > 1) { + QPen p = painter->pen(); + painter->setPen(QPen(Qt::red, 1, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin)); + painter->setBrush(Qt::NoBrush); + QPainterPath path; + path.moveTo(stuff.first()); + for (int i = 1; i < stuff.size(); ++i) + path.lineTo(stuff.at(i)); + painter->drawPath(path); + painter->setPen(p); + } +} + +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(); +} |