Revision control
++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "chip.h"
++
++ #include <QGraphicsSceneMouseEvent>
++ #include <QPainter>
++ #include <QStyleOptionGraphicsItem>
++ #include <QVarLengthArray>
++
++ 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.darker(150) : color;
++ if (option->state & QStyle::State_MouseOver)
++ fillColor = fillColor.lighter(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.darker(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();
++ }