relocated source code to the root

1 files changed, 124 insertions, 0 deletions

diff --git a/src/gui/nodeitem.cpp b/src/gui/nodeitem.cpp
new file mode 100644
index 0000000..71226f3
--- /dev/null
+++ b/src/gui/nodeitem.cpp
@@ -0,0 +1,124 @@
+#include "tikzit.h"
+#include "nodeitem.h"
+#include "tikzscene.h"
+#include <cmath>
+
+#include <QPen>
+#include <QApplication>
+#include <QBrush>
+#include <QDebug>
+#include <QFont>
+#include <QFontMetrics>
+#include <QPainterPathStroker>
+
+NodeItem::NodeItem(Node *node)
+{
+    _node = node;
+    setFlag(QGraphicsItem::ItemIsSelectable);
+    setFlag(QGraphicsItem::ItemIsMovable);
+    setFlag(QGraphicsItem::ItemSendsGeometryChanges);
+    readPos();
+}
+
+void NodeItem::readPos()
+{
+    setPos(toScreen(_node->point()));
+}
+
+void NodeItem::writePos()
+{
+    _node->setPoint(fromScreen(pos()));
+}
+
+QRectF NodeItem::labelRect() const {
+    QString label = _node->label();
+    //QFont f("Courier", 9);
+    QFontMetrics fm(Tikzit::LABEL_FONT);
+
+    QRectF rect = fm.boundingRect(label);
+    //rect.adjust(-2,-2,2,2);
+    rect.moveCenter(QPointF(0,0));
+    return rect;
+}
+
+void NodeItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
+{
+    if (_node->style()->isNone()) {
+        QColor c(180,180,200);
+        painter->setPen(QPen(c));
+        painter->setBrush(QBrush(c));
+        painter->drawEllipse(QPointF(0,0), 1,1);
+
+        QPen pen(QColor(180,180,220));
+        QVector<qreal> p;
+        p << 2.0 << 2.0;
+        pen.setDashPattern(p);
+        painter->setPen(pen);
+        painter->setBrush(Qt::NoBrush);
+        painter->drawPath(shape());
+    } else {
+        QPen pen(_node->style()->strokeColor);
+        pen.setWidth(_node->style()->strokeThickness);
+        painter->setPen(pen);
+        painter->setBrush(QBrush(_node->style()->fillColor));
+        painter->drawPath(shape());
+    }
+
+    if (_node->label() != "") {
+        QRectF rect = labelRect();
+        QPen pen(QColor(200,0,0,120));
+        QVector<qreal> d;
+        d << 2.0 << 2.0;
+        pen.setDashPattern(d);
+        painter->setPen(pen);
+        painter->setBrush(QBrush(QColor(255,255,100,120)));
+        painter->drawRect(rect);
+
+        painter->setPen(QPen(Qt::black));
+        painter->setFont(Tikzit::LABEL_FONT);
+        painter->drawText(rect, Qt::AlignCenter, _node->label());
+    }
+
+    if (isSelected()) {
+        QPainterPath sh = shape();
+        QPainterPathStroker stroker;
+        stroker.setWidth(4);
+        QPainterPath outline = (stroker.createStroke(sh) + sh).simplified();
+        painter->setPen(Qt::NoPen);
+        painter->setBrush(QBrush(QColor(150,200,255,100)));
+        painter->drawPath(outline);
+    }
+
+}
+
+QPainterPath NodeItem::shape() const
+{
+    QPainterPath path;
+    path.addEllipse(QPointF(0,0), GLOBAL_SCALEF * 0.1, GLOBAL_SCALEF * 0.1);
+    return path;
+}
+
+QRectF NodeItem::boundingRect() const
+{
+    QRectF r = labelRect();
+    return r.united(shape().boundingRect()).adjusted(-4,-4,4,4);
+}
+
+Node *NodeItem::node() const
+{
+    return _node;
+}
+
+QVariant NodeItem::itemChange(GraphicsItemChange change, const QVariant &value)
+{
+    if (change == ItemPositionChange) {
+        QPointF newPos = value.toPointF();
+        int gridSize = GLOBAL_SCALE / 8;
+        QPointF gridPos(round(newPos.x()/gridSize)*gridSize, round(newPos.y()/gridSize)*gridSize);
+        _node->setPoint(fromScreen(gridPos));
+
+        return gridPos;
+    } else {
+        return QGraphicsItem::itemChange(change, value);
+    }
+}