Add hover effect handling on AbstractAnnotationItem

ksnip · Jun 5, 2018 · 531dc66 · 531dc66
1 parent 339d872
commit 531dc66
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Showing 2 changed files with 26 additions and 17 deletions.
diff --git a/src/annotations/items/AbstractAnnotationItem.cpp b/src/annotations/items/AbstractAnnotationItem.cpp
@@ -23,6 +23,7 @@ AbstractAnnotationItem::AbstractAnnotationItem(const AnnotationProperties &prope
 {
     mProperties = new AnnotationProperties(properties);
     mShape = new QPainterPath();
+    mShadowEffect = new ShadowEffect();
 
     mPainterPen.setColor(mProperties->color());
     mPainterPen.setWidth(mProperties->size());
@@ -31,7 +32,7 @@ AbstractAnnotationItem::AbstractAnnotationItem(const AnnotationProperties &prope
 
     mStroker = new QPainterPathStroker(mPainterPen);
 
-    addShadowEffect();
+    setGraphicsEffect(mShadowEffect);
 }
 
 AbstractAnnotationItem::~AbstractAnnotationItem()
@@ -80,18 +81,6 @@ AnnotationProperties AbstractAnnotationItem::properties() const
     return *mProperties;
 }
 
-void AbstractAnnotationItem::addShadowEffect()
-{
-    auto shadowEffect = dynamic_cast<QGraphicsDropShadowEffect *>(graphicsEffect());
-    if (!shadowEffect) {
-        shadowEffect = new QGraphicsDropShadowEffect();
-        shadowEffect->setColor(QColor(63, 63, 63, 190));
-        shadowEffect->setBlurRadius(7);
-        shadowEffect->setOffset(QPoint(2, 2));
-        setGraphicsEffect(shadowEffect);
-    }
-}
-
 void AbstractAnnotationItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
 {
     shiftPainterForAllOddShapeWidth(painter);
@@ -104,6 +93,18 @@ void AbstractAnnotationItem::paint(QPainter *painter, const QStyleOptionGraphics
     painter->drawPath(*mShape);
 }
 
+void AbstractAnnotationItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
+{
+    mShadowEffect->setHoveredEnabled(true);
+    QGraphicsItem::hoverEnterEvent(event);
+}
+
+void AbstractAnnotationItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
+{
+    mShadowEffect->setHoveredEnabled(false);
+    QGraphicsItem::hoverLeaveEvent(event);
+}
+
 void AbstractAnnotationItem::shiftPainterForAllOddShapeWidth(QPainter *painter) const
 {
     if (mPainterPen.width() % 2 != 0) {
@@ -115,3 +116,8 @@ bool AbstractAnnotationItem::hasFill() const
 {
     return mProperties->fillType() == FillTypes::Fill;
 }
+
+void AbstractAnnotationItem::setHoverEffectEnabled(bool enabled)
+{
+    setAcceptHoverEvents(enabled);
+}
diff --git a/src/annotations/items/AbstractAnnotationItem.h b/src/annotations/items/AbstractAnnotationItem.h
@@ -23,16 +23,16 @@
 #include <QGraphicsItem>
 #include <QPainter>
 #include <QPainterPathStroker>
-#include <QGraphicsDropShadowEffect>
 
 #include "../core/AnnotationProperties.h"
 #include "../../common/enum/FillTypes.h"
+#include "../misc/ShadowEffect.h"
 
 class AbstractAnnotationItem : public QGraphicsItem
 {
 public:
-    AbstractAnnotationItem(const AnnotationProperties &properties);
-    ~AbstractAnnotationItem();
+    explicit AbstractAnnotationItem(const AnnotationProperties &properties);
+    virtual ~AbstractAnnotationItem();
     virtual QRectF boundingRect() const override;
     virtual QPainterPath shape() const override;
     virtual bool intersects(const QRectF &rect) const;
@@ -42,18 +42,21 @@ class AbstractAnnotationItem : public QGraphicsItem
     virtual void setPosition(const QPointF &newPosition) = 0;
     virtual QPointF position();
     AnnotationProperties properties() const;
-    void addShadowEffect();
+    void setHoverEffectEnabled(bool enabled);
 
 protected:
     void setShape(QPainterPath &newShape);
     virtual void updateShape() = 0;
     virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *) override;
+    virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;
+    virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;
 
 private:
     AnnotationProperties *mProperties;
     QPainterPath *mShape;
     QPainterPathStroker *mStroker;
     QPen mPainterPen;
+    ShadowEffect *mShadowEffect;
 
     bool hasFill() const;
     void shiftPainterForAllOddShapeWidth(QPainter *painter) const;