Gregory Bednov
f6f0598ff2
modified: src/MainWindow.cpp modified: src/MainWindow.h modified: src/items/ArrowItem.cpp modified: src/items/ArrowItem.h modified: src/items/BlockItem.cpp modified: src/items/BlockItem.h modified: src/items/DiagramScene.cpp modified: src/items/DiagramScene.h new file: src/items/HeaderFooterItem.cpp new file: src/items/HeaderFooterItem.h modified: src/items/JunctionItem.cpp modified: src/items/JunctionItem.h modified: src/main.cpp
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
#include "JunctionItem.h"
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#include "ArrowItem.h"
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#include "items/DiagramScene.h"
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#include <QPainter>
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#include <QStyleOptionGraphicsItem>
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#include <cmath>
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QColor JunctionItem::s_normalColor = QColor(30, 30, 30);
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QColor JunctionItem::s_selectedColor = QColor(40, 100, 255);
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JunctionItem::JunctionItem(QGraphicsItem* parent, int id)
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: QGraphicsObject(parent),
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m_id(id)
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{
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setFlags(ItemIsMovable | ItemIsSelectable | ItemSendsGeometryChanges);
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setZValue(1); // slightly above arrows
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}
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QRectF JunctionItem::boundingRect() const {
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return QRectF(-m_radius - 2, -m_radius - 2, (m_radius + 2) * 2, (m_radius + 2) * 2);
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}
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void JunctionItem::paint(QPainter* p, const QStyleOptionGraphicsItem*, QWidget*) {
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p->setRenderHint(QPainter::Antialiasing, true);
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p->setPen(Qt::NoPen);
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p->setBrush(isSelected() ? s_selectedColor : s_normalColor);
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p->drawEllipse(QPointF(0, 0), m_radius, m_radius);
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}
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void JunctionItem::setVisualTheme(const QColor& normalColor, const QColor& selectedColor) {
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s_normalColor = normalColor;
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s_selectedColor = selectedColor;
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}
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void JunctionItem::addArrow(ArrowItem* a) {
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m_arrows.insert(a);
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}
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void JunctionItem::removeArrow(ArrowItem* a) {
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m_arrows.remove(a);
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}
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bool JunctionItem::hitTest(const QPointF& scenePos, qreal radius) const {
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const QPointF local = mapFromScene(scenePos);
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return std::hypot(local.x(), local.y()) <= radius;
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}
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QVariant JunctionItem::itemChange(GraphicsItemChange change, const QVariant& value) {
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if (change == ItemPositionChange) {
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const QPointF desired = value.toPointF();
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if (auto* ds = qobject_cast<DiagramScene*>(scene())) {
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QRectF bounds = ds->contentRect();
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if (bounds.isNull()) bounds = ds->sceneRect();
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QRectF rect = boundingRect().translated(desired);
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QPointF clamped = desired;
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if (rect.left() < bounds.left()) clamped.setX(desired.x() + (bounds.left() - rect.left()));
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if (rect.right() > bounds.right()) clamped.setX(clamped.x() - (rect.right() - bounds.right()));
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if (rect.top() < bounds.top()) clamped.setY(desired.y() + (bounds.top() - rect.top()));
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if (rect.bottom() > bounds.bottom()) clamped.setY(clamped.y() - (rect.bottom() - bounds.bottom()));
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return clamped;
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}
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}
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if (change == ItemPositionHasChanged || change == ItemTransformHasChanged) {
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for (ArrowItem* a : m_arrows) {
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if (a) a->updatePath();
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}
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}
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return QGraphicsObject::itemChange(change, value);
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}
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