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/*************************************************************** |
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QGVCore |
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Copyright (c) 2014, Bergont Nicolas, All rights reserved. |
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 3.0 of the License, or (at your option) any later version. |
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with this library. |
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***************************************************************/ |
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#include <QGVCore.h> |
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#include <QGVGraphPrivate.h> |
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#include <QGVNode.h> |
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#include <QGVNodePrivate.h> |
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#include <QGVScene.h> |
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#include <QDebug> |
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#include <QPainter> |
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QGVNode::QGVNode(QGVNodePrivate *node, QGVScene *scene) |
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: _scene(scene), _node(node) { |
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setFlag(QGraphicsItem::ItemIsSelectable, true); |
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setFlag(QGraphicsItem::ItemIsMovable, true); |
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setFlag(QGraphicsItem::ItemSendsGeometryChanges, true); |
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} |
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QGVNode::~QGVNode() { |
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_scene->removeItem(this); |
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delete _node; |
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} |
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QString QGVNode::label() const { return getAttribute("label"); } |
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void QGVNode::setLabel(const QString &label) { setAttribute("label", label); } |
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QRectF QGVNode::boundingRect() const { return _path.boundingRect(); } |
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void QGVNode::paint(QPainter *painter, const QStyleOptionGraphicsItem *, |
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QWidget *) { |
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painter->save(); |
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painter->setPen(_pen); |
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if (isSelected()) { |
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QBrush tbrush(_brush); |
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tbrush.setColor(tbrush.color().darker(120)); |
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painter->setBrush(tbrush); |
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} else |
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painter->setBrush(_brush); |
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painter->drawPath(_path); |
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painter->setPen(QGVCore::toColor(getAttribute("labelfontcolor"))); |
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const QRectF rect = boundingRect().adjusted(2, 2, -2, -2); // Margin |
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if (_icon.isNull()) { |
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painter->drawText(rect, Qt::AlignCenter, QGVNode::label()); |
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} else { |
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painter->drawText(rect.adjusted(0, 0, 0, -rect.height() * 2 / 3), |
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Qt::AlignCenter, QGVNode::label()); |
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const QRectF img_rect = rect.adjusted(0, rect.height() / 3, 0, 0); |
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QImage img = _icon.scaled(img_rect.size().toSize(), Qt::KeepAspectRatio, |
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Qt::SmoothTransformation); |
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painter->drawImage( |
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img_rect.topLeft() + |
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QPointF((img_rect.width() - img.rect().width()) / 2, 0), |
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img); |
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} |
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painter->restore(); |
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} |
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void QGVNode::setAttribute(const QString &name, const QString &value) { |
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char empty[] = ""; |
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agsafeset(_node->node(), name.toLocal8Bit().data(), |
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value.toLocal8Bit().data(), empty); |
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} |
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QString QGVNode::getAttribute(const QString &name) const { |
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char *value = agget(_node->node(), name.toLocal8Bit().data()); |
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if (value) return value; |
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return QString(); |
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} |
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QString QGVNode::posToAttributeString() const { |
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qreal gheight = QGVCore::graphHeight(_scene->_graph->graph()); |
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qreal width = ND_width(_node->node()) * DotDefaultDPI; |
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qreal height = ND_height(_node->node()) * DotDefaultDPI; |
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return QGVCore::qtToGvPos(QGVCore::centerToOrigin(pos(), -width, -height), |
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gheight); |
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} |
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void QGVNode::setIcon(const QImage &icon) { _icon = icon; } |
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QVariant QGVNode::itemChange(GraphicsItemChange change, const QVariant &value) { |
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if (change == ItemPositionChange && _scene) { |
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// value is the new position. |
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QString oldStr = getAttribute(QString::fromLocal8Bit("pos")); |
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qreal gheight = QGVCore::graphHeight(_scene->_graph->graph()); |
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QPointF newPos = value.toPointF(); |
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qreal width = ND_width(_node->node()) * DotDefaultDPI; |
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qreal height = ND_height(_node->node()) * DotDefaultDPI; |
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QString newStr = QGVCore::qtToGvPos( |
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QGVCore::centerToOrigin(newPos, -width, -height), gheight); |
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if (!newStr.isEmpty()) { |
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if (oldStr != newStr) { |
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setAttribute("pos", newStr.toLocal8Bit().data()); |
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} |
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return newPos; |
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} |
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} else if (change == ItemPositionHasChanged && _scene) { |
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emit _scene->nodeChanged(this); |
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return value; |
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} |
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return QGraphicsItem::itemChange(change, value); |
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} |
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void QGVNode::updateLayout() { |
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prepareGeometryChange(); |
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qreal width = ND_width(_node->node()) * DotDefaultDPI; |
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qreal height = ND_height(_node->node()) * DotDefaultDPI; |
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// Node Position (center) |
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qreal gheight = QGVCore::graphHeight(_scene->_graph->graph()); |
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setPos(QGVCore::centerToOrigin( |
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QGVCore::toPoint(ND_coord(_node->node()), gheight), width, height)); |
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// Node on top |
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setZValue(1); |
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// Node path |
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_path = |
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QGVCore::toPath(ND_shape(_node->node())->name, |
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(polygon_t *)ND_shape_info(_node->node()), width, height); |
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_pen.setWidth(1); |
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_brush.setStyle(QGVCore::toBrushStyle(getAttribute("style"))); |
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_brush.setColor(QGVCore::toColor(getAttribute("fillcolor"))); |
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_pen.setStyle(QGVCore::toPenStyle(getAttribute("style"))); |
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_pen.setColor(QGVCore::toColor(getAttribute("color"))); |
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setToolTip(getAttribute("tooltip")); |
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} |
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