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/**
* Manage the scene, which contains a single Graph, and respond to user input. This serves as
* the controller for the MVC (Graph, TikzView, TikzScene).
*/
#include "tikzit.h"
#include "tikzscene.h"
#include <QPen>
#include <QBrush>
#include <QDebug>
TikzScene::TikzScene(Graph *graph, QObject *parent) :
QGraphicsScene(parent), _graph(graph)
{
}
TikzScene::~TikzScene() {
}
Graph *TikzScene::graph() const
{
return _graph;
}
void TikzScene::setGraph(Graph *graph)
{
_graph = graph;
graphReplaced();
}
void TikzScene::graphReplaced()
{
foreach (NodeItem *ni, nodeItems) {
removeItem(ni);
delete ni;
}
nodeItems.clear();
foreach (EdgeItem *ei, edgeItems) {
removeItem(ei);
delete ei;
}
edgeItems.clear();
foreach (Edge *e, _graph->edges()) {
EdgeItem *ei = new EdgeItem(e);
edgeItems << ei;
addItem(ei);
}
foreach (Node *n, _graph->nodes()) {
NodeItem *ni = new NodeItem(n);
nodeItems << ni;
addItem(ni);
}
}
void TikzScene::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
QPointF mousePos(event->buttonDownScenePos(Qt::LeftButton).x(),
event->buttonDownScenePos(Qt::LeftButton).y());
switch (tikzit->toolPalette()->currentTool()) {
case ToolPalette::SELECT:
// TODO: check if we grabbed a control point
QGraphicsScene::mousePressEvent(event);
if (!selectedItems().empty() && !items(mousePos).empty()) {
_oldNodePositions = new QHash<NodeItem*,QPointF>();
for (QGraphicsItem *gi : selectedItems()) {
if (NodeItem *ni = dynamic_cast<NodeItem*>(gi)) {
_oldNodePositions->
}
}
qDebug() << "I am dragging";
}
break;
case ToolPalette::VERTEX:
break;
case ToolPalette::EDGE:
break;
case ToolPalette::CROP:
break;
}
}
void TikzScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
switch (tikzit->toolPalette()->currentTool()) {
case ToolPalette::SELECT:
QGraphicsScene::mouseMoveEvent(event);
break;
case ToolPalette::VERTEX:
break;
case ToolPalette::EDGE:
break;
case ToolPalette::CROP:
break;
}
// TODO: only sync edges that change
foreach (EdgeItem *ei, edgeItems) {
ei->edge()->updateControls();
ei->syncPos();
}
}
void TikzScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
switch (tikzit->toolPalette()->currentTool()) {
case ToolPalette::SELECT:
QGraphicsScene::mouseReleaseEvent(event);
break;
case ToolPalette::VERTEX:
break;
case ToolPalette::EDGE:
break;
case ToolPalette::CROP:
break;
}
}
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