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QetShapeItem: user can add polyline shape

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git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@3144 bfdf4180-ca20-0410-9c96-a3a8aa849046
This commit is contained in:
blacksun
2014-06-17 09:08:41 +00:00
parent a2966a48af
commit 25acb29992
6 changed files with 142 additions and 34 deletions
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83
sources/qetgraphicsitem/qetshapeitem.cpp
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@@ -19,6 +19,7 @@
#include "diagramcommands.h"
#include "createdxf.h"
#include "diagram.h"
#include "qet.h"
/**
@@ -37,6 +38,7 @@ QetShapeItem::QetShapeItem(QPointF p1, QPointF p2, ShapeType type, QGraphicsItem
m_P2 (Diagram::snapToGrid(p2))
{
if (type == Polyline) m_polygon << m_P1 << m_P2;
setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
}
@@ -57,11 +59,10 @@ void QetShapeItem::setStyle(Qt::PenStyle newStyle)
/**
* @brief QetShapeItem::scale
* Preview the scale of this item to factor
* Scale this item by (factor / 100 ).
* @param factor
*/
void QetShapeItem::previewScale(int factor) {
setTransformOriginPoint(boundingRect().center());
if (factor >= 1 && factor <= 200) {
qreal new_scale = factor;
new_scale /= 100;
@@ -71,14 +72,34 @@ void QetShapeItem::previewScale(int factor) {
/**
* @brief QetShapeItem::setP2
* Set the second point of this item
* Set the second point of this item.
* If this item is a polyline,
* the last point of the polyline is replaced by P2.
* @param P2
*/
void QetShapeItem::setP2(QPointF P2) {
P2 = Diagram::snapToGrid(P2);
if (P2 == m_P2) return;
if (m_shapeType == Polyline) {
prepareGeometryChange();
m_polygon.replace(m_polygon.size()-1, P2);
}
else {
if (P2 == m_P2) return;
prepareGeometryChange();
m_P2 = P2;
}
setTransformOriginPoint(boundingRect().center());
}
/**
* @brief QetShapeItem::setNextPoint
* Add a new point to the curent polygon
* @param P the new point.
*/
void QetShapeItem::setNextPoint(QPointF P) {
prepareGeometryChange();
m_P2 = P2;
m_polygon.append(Diagram::snapToGrid(P));
setTransformOriginPoint(boundingRect().center());
}
@@ -87,6 +108,9 @@ void QetShapeItem::setP2(QPointF P2) {
* @return the bounding rect of this item
*/
QRectF QetShapeItem::boundingRect() const {
if (m_shapeType == Polyline)
return ( shape().boundingRect());
QRectF b(m_P1, m_P2);
return b.normalized();
}
@@ -112,6 +136,9 @@ QPainterPath QetShapeItem::shape() const {
case Ellipse:
path.addEllipse(boundingRect());
break;
case Polyline:
path.addPolygon(m_polygon);
break;
default:
Q_ASSERT(false);
break;
@@ -129,6 +156,7 @@ void QetShapeItem::changeGraphicsItem(const ShapeType &newtype) {
if (newtype == m_shapeType) return;
prepareGeometryChange();
m_shapeType = newtype;
setTransformOriginPoint(boundingRect().center());
}
/**
@@ -145,8 +173,6 @@ void QetShapeItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *opti
QPen pen;
pen.setStyle(m_shapeStyle);
if (isSelected()) pen.setColor(Qt::red);
// Disable Antialiasing
painter -> setRenderHint(QPainter::Antialiasing, false);
painter->setPen(pen);
// TODO for printing line type on Windows
@@ -165,6 +191,9 @@ void QetShapeItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *opti
case Ellipse:
painter->drawEllipse(boundingRect());
break;
case Polyline:
painter->drawPolyline(m_polygon);
break;
}
}
@@ -178,10 +207,19 @@ bool QetShapeItem::fromXml(const QDomElement &e) {
if (e.tagName() != "shape") return (false);
m_shapeStyle = Qt::PenStyle(e.attribute("style","0").toInt());
m_P1.setX(e.attribute("x1", 0).toDouble());
m_P1.setY(e.attribute("y1", 0).toDouble());
m_P2.setX(e.attribute("x2", 0).toDouble());
m_P2.setY(e.attribute("y2", 0).toDouble());
if (e.attribute("type", "0").toInt() != Polyline) {
m_P1.setX(e.attribute("x1", 0).toDouble());
m_P1.setY(e.attribute("y1", 0).toDouble());
m_P2.setX(e.attribute("x2", 0).toDouble());
m_P2.setY(e.attribute("y2", 0).toDouble());
}
else {
foreach(QDomElement de, QET::findInDomElement(e, "points", "point")) {
m_polygon << QPointF(de.attribute("x", 0).toDouble(), de.attribute("y", 0).toDouble());
}
}
changeGraphicsItem(QetShapeItem::ShapeType(e.attribute("type","0").toInt()));
return (true);
@@ -199,10 +237,25 @@ QDomElement QetShapeItem::toXml(QDomDocument &document) const {
//write some attribute
result.setAttribute("type", QString::number(m_shapeType));
result.setAttribute("style", QString::number(m_shapeStyle));
result.setAttribute("x1", mapToScene(m_P1).x());
result.setAttribute("y1", mapToScene(m_P1).y());
result.setAttribute("x2", mapToScene(m_P2).x());
result.setAttribute("y2", mapToScene(m_P2).y());
if (m_shapeType != Polyline) {
result.setAttribute("x1", mapToScene(m_P1).x());
result.setAttribute("y1", mapToScene(m_P1).y());
result.setAttribute("x2", mapToScene(m_P2).x());
result.setAttribute("y2", mapToScene(m_P2).y());
}
else {
QDomElement points = document.createElement("points");
foreach(QPointF p, m_polygon) {
QDomElement point = document.createElement("point");
QPointF pf = mapToScene(p);
point.setAttribute("x", pf.x());
point.setAttribute("y", pf.y());
points.appendChild(point);
}
result.appendChild(points);
}
return(result);
}