share/qtcreator/qml/qmljsdebugger/editor/liveselectionindicator.cpp

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  14 ** this package.
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  19 ** General Public License version 2.1 as published by the Free Software
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  33
  34 #include "liveselectionindicator.h"
  35 #include "../qdeclarativeviewobserver_p.h"
  36 #include "qmlobserverconstants.h"
  37
  38 #include <QtCore/QDebug>
  39
  40 #include <QtGui/QGraphicsPolygonItem>
  41 #include <QtGui/QGraphicsObject>
  42 #include <QtGui/QGraphicsScene>
  43 #include <QtGui/QPen>
  44
  45 #include <cmath>
  46
  47 namespace QmlJSDebugger {
  48
  49 LiveSelectionIndicator::LiveSelectionIndicator(QDeclarativeViewObserver *editorView,
  50                                        QGraphicsObject *layerItem)
  51     : m_layerItem(layerItem), m_view(editorView)
  52 {
  53 }
  54
  55 LiveSelectionIndicator::~LiveSelectionIndicator()
  56 {
  57     clear();
  58 }
  59
  60 void LiveSelectionIndicator::show()
  61 {
  62     foreach (QGraphicsPolygonItem *item, m_indicatorShapeHash.values())
  63         item->show();
  64 }
  65
  66 void LiveSelectionIndicator::hide()
  67 {
  68     foreach (QGraphicsPolygonItem *item, m_indicatorShapeHash.values())
  69         item->hide();
  70 }
  71
  72 void LiveSelectionIndicator::clear()
  73 {
  74     if (!m_layerItem.isNull()) {
  75         QHashIterator<QGraphicsItem*, QGraphicsPolygonItem *> iter(m_indicatorShapeHash);
  76         while(iter.hasNext()) {
  77             iter.next();
  78             m_layerItem.data()->scene()->removeItem(iter.value());
  79             delete iter.value();
  80         }
  81     }
  82
  83     m_indicatorShapeHash.clear();
  84
  85 }
  86
  87 QPolygonF LiveSelectionIndicator::addBoundingRectToPolygon(QGraphicsItem *item, QPolygonF &polygon)
  88 {
  89     // ### remove this if statement when QTBUG-12172 gets fixed
  90     if (item->boundingRect() != QRectF(0,0,0,0)) {
  91         QPolygonF bounding = item->mapToScene(item->boundingRect());
  92         if (bounding.isClosed()) //avoid crashes if there is an infinite scale.
  93             polygon = polygon.united(bounding);
  94     }
  95
  96     foreach (QGraphicsItem *child, item->childItems()) {
  97         if (!QDeclarativeViewObserverPrivate::get(m_view)->isEditorItem(child))
  98             addBoundingRectToPolygon(child, polygon);
  99     }
 100     return polygon;
 101 }
 102
 103 void LiveSelectionIndicator::setItems(const QList<QWeakPointer<QGraphicsObject> > &itemList)
 104 {
 105     clear();
 106
 107     // set selections to also all children if they are not editor items
 108
 109     foreach (QWeakPointer<QGraphicsObject> object, itemList) {
 110         if (object.isNull())
 111             continue;
 112
 113         QGraphicsItem *item = object.data();
 114
 115         QGraphicsPolygonItem *newSelectionIndicatorGraphicsItem
 116                 = new QGraphicsPolygonItem(m_layerItem.data());
 117         if (!m_indicatorShapeHash.contains(item)) {
 118             m_indicatorShapeHash.insert(item, newSelectionIndicatorGraphicsItem);
 119
 120             QPolygonF boundingShapeInSceneSpace;
 121             addBoundingRectToPolygon(item, boundingShapeInSceneSpace);
 122
 123             QRectF boundingRect
 124                     = m_view->adjustToScreenBoundaries(boundingShapeInSceneSpace.boundingRect());
 125             QPolygonF boundingRectInLayerItemSpace = m_layerItem.data()->mapFromScene(boundingRect);
 126
 127             QPen pen;
 128             pen.setColor(QColor(108, 141, 221));
 129             newSelectionIndicatorGraphicsItem->setData(Constants::EditorItemDataKey,
 130                                                        QVariant(true));
 131             newSelectionIndicatorGraphicsItem->setFlag(QGraphicsItem::ItemIsSelectable, false);
 132             newSelectionIndicatorGraphicsItem->setPolygon(boundingRectInLayerItemSpace);
 133             newSelectionIndicatorGraphicsItem->setPen(pen);
 134         }
 135     }
 136 }
 137
 138 } //namespace QmlJSDebugger
 139