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Copy pathDefaultHorizontalNodeGeometry.cpp
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239 lines (177 loc) · 7.38 KB
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#include "DefaultHorizontalNodeGeometry.hpp"
#include "AbstractGraphModel.hpp"
#include "NodeData.hpp"
#include <QPoint>
#include <QRect>
#include <QWidget>
namespace QtNodes {
DefaultHorizontalNodeGeometry::DefaultHorizontalNodeGeometry(AbstractGraphModel &graphModel)
: AbstractNodeGeometry(graphModel)
, _portSize(20)
, _portSpasing(10)
, _fontMetrics(QFont())
, _boldFontMetrics(QFont())
{
QFont f;
f.setBold(true);
_boldFontMetrics = QFontMetrics(f);
_portSize = _fontMetrics.height();
}
QSize DefaultHorizontalNodeGeometry::size(NodeId const nodeId) const
{
return _graphModel.nodeData<QSize>(nodeId, NodeRole::Size);
}
void DefaultHorizontalNodeGeometry::recomputeSize(NodeId const nodeId) const
{
unsigned int height = maxVerticalPortsExtent(nodeId);
if (auto w = _graphModel.nodeData<QWidget *>(nodeId, NodeRole::Widget)) {
height = std::max(height, static_cast<unsigned int>(w->height()));
}
QRectF const capRect = captionRect(nodeId);
height += capRect.height();
height += _portSpasing; // space above caption
height += _portSpasing; // space below caption
unsigned int inPortWidth = maxPortsTextAdvance(nodeId, PortType::In);
unsigned int outPortWidth = maxPortsTextAdvance(nodeId, PortType::Out);
unsigned int width = inPortWidth + outPortWidth + 4 * _portSpasing;
if (auto w = _graphModel.nodeData<QWidget *>(nodeId, NodeRole::Widget)) {
width += w->width();
}
width = std::max(width, static_cast<unsigned int>(capRect.width()) + 2 * _portSpasing);
QSize size(width, height);
_graphModel.setNodeData(nodeId, NodeRole::Size, size);
}
QPointF DefaultHorizontalNodeGeometry::portPosition(NodeId const nodeId,
PortType const portType,
PortIndex const portIndex) const
{
unsigned int const step = _portSize + _portSpasing;
QPointF result;
double totalHeight = 0.0;
totalHeight += captionRect(nodeId).height();
totalHeight += _portSpasing;
totalHeight += step * portIndex;
totalHeight += step / 2.0;
QSize size = _graphModel.nodeData<QSize>(nodeId, NodeRole::Size);
switch (portType) {
case PortType::In: {
double x = 0.0;
result = QPointF(x, totalHeight);
break;
}
case PortType::Out: {
double x = size.width();
result = QPointF(x, totalHeight);
break;
}
default:
break;
}
return result;
}
QPointF DefaultHorizontalNodeGeometry::portTextPosition(NodeId const nodeId,
PortType const portType,
PortIndex const portIndex) const
{
QPointF p = portPosition(nodeId, portType, portIndex);
QRectF rect = portTextRect(nodeId, portType, portIndex);
p.setY(p.y() + rect.height() / 4.0);
QSize size = _graphModel.nodeData<QSize>(nodeId, NodeRole::Size);
switch (portType) {
case PortType::In:
p.setX(_portSpasing);
break;
case PortType::Out:
p.setX(size.width() - _portSpasing - rect.width());
break;
default:
break;
}
return p;
}
QRectF DefaultHorizontalNodeGeometry::captionRect(NodeId const nodeId) const
{
if (!_graphModel.nodeData<bool>(nodeId, NodeRole::CaptionVisible))
return QRect();
QString name = _graphModel.nodeData<QString>(nodeId, NodeRole::Caption);
return _boldFontMetrics.boundingRect(name);
}
QPointF DefaultHorizontalNodeGeometry::captionPosition(NodeId const nodeId) const
{
QSize size = _graphModel.nodeData<QSize>(nodeId, NodeRole::Size);
return QPointF(0.5 * (size.width() - captionRect(nodeId).width()),
0.5 * _portSpasing + captionRect(nodeId).height());
}
QPointF DefaultHorizontalNodeGeometry::widgetPosition(NodeId const nodeId) const
{
QSize size = _graphModel.nodeData<QSize>(nodeId, NodeRole::Size);
unsigned int captionHeight = captionRect(nodeId).height();
if (auto w = _graphModel.nodeData<QWidget *>(nodeId, NodeRole::Widget)) {
// If the widget wants to use as much vertical space as possible,
// place it immediately after the caption.
if (w->sizePolicy().verticalPolicy() & QSizePolicy::ExpandFlag) {
return QPointF(2.0 * _portSpasing + maxPortsTextAdvance(nodeId, PortType::In),
captionHeight);
} else {
return QPointF(2.0 * _portSpasing + maxPortsTextAdvance(nodeId, PortType::In),
(captionHeight + size.height() - w->height()) / 2.0);
}
}
return QPointF();
}
QRect DefaultHorizontalNodeGeometry::resizeHandleRect(NodeId const nodeId) const
{
QSize size = _graphModel.nodeData<QSize>(nodeId, NodeRole::Size);
unsigned int rectSize = 7;
return QRect(size.width() - _portSpasing, size.height() - _portSpasing, rectSize, rectSize);
}
QRectF DefaultHorizontalNodeGeometry::portTextRect(NodeId const nodeId,
PortType const portType,
PortIndex const portIndex) const
{
QString s;
if (_graphModel.portData<bool>(nodeId, portType, portIndex, PortRole::CaptionVisible)) {
s = _graphModel.portData<QString>(nodeId, portType, portIndex, PortRole::Caption);
} else {
auto portData = _graphModel.portData(nodeId, portType, portIndex, PortRole::DataType);
s = portData.value<NodeDataType>().name;
}
return _fontMetrics.boundingRect(s);
}
unsigned int DefaultHorizontalNodeGeometry::maxVerticalPortsExtent(NodeId const nodeId) const
{
PortCount nInPorts = _graphModel.nodeData<PortCount>(nodeId, NodeRole::InPortCount);
PortCount nOutPorts = _graphModel.nodeData<PortCount>(nodeId, NodeRole::OutPortCount);
unsigned int maxNumOfEntries = std::max(nInPorts, nOutPorts);
unsigned int step = _portSize + _portSpasing;
return step * maxNumOfEntries;
}
unsigned int DefaultHorizontalNodeGeometry::maxPortsTextAdvance(NodeId const nodeId,
PortType const portType) const
{
unsigned int width = 0;
size_t const n = _graphModel
.nodeData(nodeId,
(portType == PortType::Out) ? NodeRole::OutPortCount
: NodeRole::InPortCount)
.toUInt();
for (PortIndex portIndex = 0ul; portIndex < n; ++portIndex) {
QString name;
if (_graphModel.portData<bool>(nodeId, portType, portIndex, PortRole::CaptionVisible)) {
name = _graphModel.portData<QString>(nodeId, portType, portIndex, PortRole::Caption);
} else {
NodeDataType portData = _graphModel.portData<NodeDataType>(nodeId,
portType,
portIndex,
PortRole::DataType);
name = portData.name;
}
#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
width = std::max(unsigned(_fontMetrics.horizontalAdvance(name)), width);
#else
width = std::max(unsigned(_fontMetrics.width(name)), width);
#endif
}
return width;
}
} // namespace QtNodes