Apply interpolation when restoring an animation-curve

+ Notify timeline when inserting a keyframe

Change-Id: I91548c4e45306e9a6c6490cc94b88080de3910ac
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/qmldesigner/components/curveeditor/animationcurve.cpp

@@ -31,6 +31,8 @@
 #include <QLineF>
 #include <QPainterPath>
 
+#include <sstream>
+
 namespace DesignTools {
 
 AnimationCurve::AnimationCurve()
@@ -127,6 +129,21 @@ double AnimationCurve::maximumValue() const
     return m_maxY;
 }
 
+std::string AnimationCurve::string() const
+{
+    std::stringstream sstream;
+    sstream << "{ ";
+    for (size_t i = 0; i < m_frames.size(); ++i) {
+        if (i == m_frames.size() - 1)
+            sstream << m_frames[i].string();
+        else
+            sstream << m_frames[i].string() << ", ";
+    }
+    sstream << " }";
+
+    return sstream.str();
+}
+
 CurveSegment AnimationCurve::segment(double time) const
 {
     CurveSegment seg;

src/plugins/qmldesigner/components/curveeditor/animationcurve.h

@@ -58,6 +58,8 @@ public:
 
     double maximumValue() const;
 
+    std::string string() const;
+
     CurveSegment segment(double time) const;
 
     std::vector<CurveSegment> segments() const;

src/plugins/qmldesigner/components/curveeditor/detail/curveitem.cpp

@@ -34,6 +34,7 @@
 
 #include <algorithm>
 #include <cmath>
+#include <sstream>
 
 namespace DesignTools {
 
@@ -251,9 +252,8 @@ void CurveItem::restore()
         Keyframe curr = currItem->keyframe();
         CurveSegment segment(prev, curr);
 
-        segment.setInterpolation(segment.interpolation());
-
         prevItem->setRightHandle(segment.left().rightHandle());
+        currItem->setInterpolation(segment.interpolation());
         currItem->setLeftHandle(segment.right().leftHandle());
 
         prevItem = currItem;
@@ -329,12 +329,12 @@ void CurveItem::setInterpolation(Keyframe::Interpolation interpolation)
             segment.setInterpolation(interpolation);
             prevItem->setKeyframe(segment.left());
             currItem->setKeyframe(segment.right());
-
-            setDirty(true);
         }
 
         prevItem = currItem;
     }
+    setDirty(false);
+    emit curveChanged(id(), curve());
 }
 
 void CurveItem::connect(GraphicsScene *scene)
@@ -358,6 +358,8 @@ void CurveItem::insertKeyframeByTime(double time)
     AnimationCurve acurve = curve();
     acurve.insert(time);
     setCurve(acurve);
+
+    emit curveChanged(id(), curve());
 }
 
 void CurveItem::deleteSelectedKeyframes()

src/plugins/qmldesigner/components/curveeditor/detail/curveitem.h

@@ -31,6 +31,7 @@
 #include "selectableitem.h"
 #include "treeitem.h"
 
+#include <string>
 #include <QGraphicsObject>
 
 namespace DesignTools {
@@ -43,6 +44,9 @@ class CurveItem : public QGraphicsObject
 {
     Q_OBJECT
 
+signals:
+    void curveChanged(unsigned int id, const AnimationCurve &curve);
+
 public:
     CurveItem(QGraphicsItem *parent = nullptr);
 

src/plugins/qmldesigner/components/curveeditor/detail/graphicsscene.cpp

@@ -69,6 +69,8 @@ void GraphicsScene::addCurveItem(CurveItem *item)
     m_dirty = true;
     item->setDirty(false);
 
+    connect(item, &CurveItem::curveChanged, this, &GraphicsScene::curveChanged);
+
     addItem(item);
     item->connect(this);
 }

src/plugins/qmldesigner/components/curveeditor/detail/keyframeitem.cpp

@@ -174,6 +174,11 @@ void KeyframeItem::setKeyframe(const Keyframe &keyframe)
     setPos(m_transform.map(m_frame.position()));
 }
 
+void KeyframeItem::setInterpolation(Keyframe::Interpolation interpolation)
+{
+    m_frame.setInterpolation(interpolation);
+}
+
 void KeyframeItem::setLeftHandle(const QPointF &pos)
 {
     m_frame.setLeftHandle(pos);

src/plugins/qmldesigner/components/curveeditor/detail/keyframeitem.h

@@ -75,6 +75,8 @@ public:
 
     void setKeyframe(const Keyframe &keyframe);
 
+    void setInterpolation(Keyframe::Interpolation interpolation);
+
     void setLeftHandle(const QPointF &pos);
 
     void setRightHandle(const QPointF &pos);

src/plugins/qmldesigner/components/curveeditor/keyframe.cpp

@@ -25,6 +25,8 @@
 
 #include "keyframe.h"
 
+#include <sstream>
+
 namespace DesignTools {
 
 Keyframe::Keyframe()
@@ -101,6 +103,31 @@ QVariant Keyframe::data() const
     return m_data;
 }
 
+std::string Keyframe::string() const
+{
+    std::stringstream istream;
+    if (m_interpolation == Interpolation::Linear)
+        istream << "L";
+    else if (m_interpolation == Interpolation::Bezier)
+        istream << "B";
+    else if (m_interpolation == Interpolation::Easing)
+        istream << "E";
+
+    std::stringstream sstream;
+    sstream << "[" << istream.str() << (hasData() ? "*" : "") << "Frame P: " << m_position.x()
+            << ", " << m_position.y();
+
+    if (hasLeftHandle())
+        sstream << " L: " << m_leftHandle.x() << ", " << m_leftHandle.y();
+
+    if (hasRightHandle())
+        sstream << " R: " << m_rightHandle.x() << ", " << m_rightHandle.y();
+
+    sstream << "]";
+
+    return sstream.str();
+}
+
 Keyframe::Interpolation Keyframe::interpolation() const
 {
     return m_interpolation;

src/plugins/qmldesigner/components/curveeditor/keyframe.h

@@ -33,14 +33,7 @@ namespace DesignTools {
 class Keyframe
 {
 public:
-    enum class Interpolation
-    {
-        Undefined,
-        Step,
-        Linear,
-        Bezier,
-        Easing
-    };
+    enum class Interpolation { Undefined, Step, Linear, Bezier, Easing };
 
     Keyframe();
 
@@ -66,6 +59,8 @@ public:
 
     QVariant data() const;
 
+    std::string string() const;
+
     Interpolation interpolation() const;
 
     void setPosition(const QPointF &pos);