chip.cpp Example File

graphicsview/chip/chip.cpp
/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the demonstration applications of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, 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 The Qt Company Ltd 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 "chip.h" #include <QtWidgets> 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); setAcceptHoverEvents(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(); }