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nodeview: support multiple flow directions

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This commit is contained in:
itsmattkc
2020-04-27 16:08:48 +10:00
parent 690bdb6581
commit b947b2224a
16 changed files with 338 additions and 176 deletions
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app/widget/nodeview/nodeviewedge.cpp
+20 -4
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@@ -35,7 +35,8 @@ NodeViewEdge::NodeViewEdge(QGraphicsItem *parent) :
QGraphicsPathItem(parent),
edge_(nullptr),
color_group_(QPalette::Active),
color_role_(QPalette::Text)
color_role_(QPalette::Text),
flow_dir_(NodeViewCommon::kLeftToRight)
{
// Ensures this UI object is drawn behind other objects
setZValue(-1);
@@ -75,7 +76,8 @@ void NodeViewEdge::Adjust()
}
// Draw a line between the two
SetPoints(output->GetParamPoint(edge_->output()), input->GetParamPoint(edge_->input()));
SetPoints(output->GetParamPoint(edge_->output()),
input->GetParamPoint(edge_->input()));
}
void NodeViewEdge::SetConnected(bool c)
@@ -103,12 +105,26 @@ void NodeViewEdge::SetHighlighted(bool e)
void NodeViewEdge::SetPoints(const QPointF &start, const QPointF &end)
{
QPainterPath path;
double half_x = lerp(start.x(), end.x(), 0.5);
path.moveTo(start);
path.cubicTo(QPointF(half_x, start.y()), QPointF(half_x, end.y()), end);
if (NodeViewCommon::GetFlowOrientation(flow_dir_) == Qt::Horizontal) {
double half_x = lerp(start.x(), end.x(), 0.5);
path.cubicTo(QPointF(half_x, start.y()), QPointF(half_x, end.y()), end);
} else {
double half_y = lerp(start.y(), end.y(), 0.5);
path.cubicTo(QPointF(start.x(), half_y), QPointF(end.x(), half_y), end);
}
setPath(path);
}
void NodeViewEdge::SetFlowDirection(NodeViewCommon::FlowDirection dir)
{
flow_dir_ = dir;
Adjust();
}
void NodeViewEdge::UpdatePen()
{
setPen(QPen(qApp->palette().color(color_group_, color_role_), edge_width_));