Add the ability to modify the animation range from the curve editor

Fix a synchronization issue between timeline and curve editor when
the animation contains pinned curves

Change-Id: I89dda234063259f41d662749d696f5fc8a04f9e8
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

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

@@ -48,15 +48,18 @@ CurveEditor::CurveEditor(CurveEditorModel *model, QWidget *parent)
     splitter->setStretchFactor(1, 2);
 
     auto *box = new QVBoxLayout;
-    box->addWidget(createToolBar());
+    box->addWidget(createToolBar(model));
     box->addWidget(splitter);
     setLayout(box);
 
-    connect(m_tree, &TreeView::treeItemLocked, m_view, &GraphicsView::setLocked);
-    connect(m_tree->selectionModel(), &SelectionModel::curvesSelected, m_view, &GraphicsView::reset);
-
     connect(m_tree, &TreeView::treeItemLocked, model, &CurveEditorModel::curveChanged);
     connect(m_tree, &TreeView::treeItemPinned, model, &CurveEditorModel::curveChanged);
+
+    connect(m_tree, &TreeView::treeItemLocked, m_view, &GraphicsView::setLocked);
+    connect(m_tree->selectionModel(),
+            &SelectionModel::curvesSelected,
+            m_view,
+            &GraphicsView::updateSelection);
 }
 
 void CurveEditor::zoomX(double zoom)
@@ -74,7 +77,7 @@ void CurveEditor::clearCanvas()
     m_view->reset({});
 }
 
-QToolBar *CurveEditor::createToolBar()
+QToolBar *CurveEditor::createToolBar(CurveEditorModel *model)
 {
     auto *bar = new QToolBar;
     bar->setFloatable(false);
@@ -111,8 +114,38 @@ QToolBar *CurveEditor::createToolBar()
     bar->addWidget(valueWidget);
 
     auto *durationBox = new QHBoxLayout;
-    durationBox->addWidget(new QLabel(tr("Duration")));
-    durationBox->addWidget(new QSpinBox);
+    auto *startSpin = new QSpinBox;
+    auto *endSpin = new QSpinBox;
+
+    startSpin->setRange(std::numeric_limits<int>::lowest(), std::numeric_limits<int>::max());
+    startSpin->setValue(model->minimumTime());
+
+    auto updateStartFrame = [this, model](int frame) {
+        model->setMinimumTime(frame, false);
+        m_view->viewport()->update();
+    };
+    connect(startSpin, QOverload<int>::of(&QSpinBox::valueChanged), updateStartFrame);
+
+    endSpin->setRange(std::numeric_limits<int>::lowest(), std::numeric_limits<int>::max());
+    endSpin->setValue(model->maximumTime());
+
+    auto updateEndFrame = [this, model](int frame) {
+        model->setMaximumTime(frame, false);
+        m_view->viewport()->update();
+    };
+    connect(endSpin, QOverload<int>::of(&QSpinBox::valueChanged), updateEndFrame);
+
+    auto setStartSlot = [startSpin](int frame) { startSpin->setValue(frame); };
+    connect(model, &CurveEditorModel::updateStartFrame, setStartSlot);
+
+    auto setEndSlot = [endSpin](int frame) { endSpin->setValue(frame); };
+    connect(model, &CurveEditorModel::updateEndFrame, setEndSlot);
+
+    durationBox->addWidget(new QLabel(tr("Start Frame")));
+    durationBox->addWidget(startSpin);
+    durationBox->addWidget(new QLabel(tr("End Frame")));
+    durationBox->addWidget(endSpin);
+
     auto *durationWidget = new QWidget;
     durationWidget->setLayout(durationBox);
     bar->addWidget(durationWidget);

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

@@ -48,7 +48,7 @@ public:
     void clearCanvas();
 
 private:
-    QToolBar *createToolBar();
+    QToolBar *createToolBar(CurveEditorModel *model);
 
     TreeView *m_tree;
 

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

@@ -25,13 +25,16 @@
 
 #include "curveeditormodel.h"
 #include "treeitem.h"
+
 #include "detail/graphicsview.h"
 #include "detail/selectionmodel.h"
 
 namespace DesignTools {
 
-CurveEditorModel::CurveEditorModel(QObject *parent)
+CurveEditorModel::CurveEditorModel(double minTime, double maxTime, QObject *parent)
     : TreeModel(parent)
+    , m_minTime(minTime)
+    , m_maxTime(maxTime)
 {}
 
 CurveEditorModel::~CurveEditorModel() {}
@@ -42,6 +45,24 @@ void CurveEditorModel::setCurrentFrame(int frame)
         graphicsView()->setCurrentFrame(frame);
 }
 
+void CurveEditorModel::setMinimumTime(double time, bool internal)
+{
+    m_minTime = time;
+    if (internal)
+        emit updateStartFrame(m_minTime);
+    else
+        emit startFrameChanged(m_minTime);
+}
+
+void CurveEditorModel::setMaximumTime(double time, bool internal)
+{
+    m_maxTime = time;
+    if (internal)
+        emit updateEndFrame(m_maxTime);
+    else
+        emit endFrameChanged(m_maxTime);
+}
+
 void CurveEditorModel::setCurve(unsigned int id, const AnimationCurve &curve)
 {
     if (TreeItem *item = find(id)) {

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

@@ -48,6 +48,14 @@ class CurveEditorModel : public TreeModel
 signals:
     void currentFrameChanged(int frame);
 
+    void startFrameChanged(int frame);
+
+    void endFrameChanged(int frame);
+
+    void updateStartFrame(int frame);
+
+    void updateEndFrame(int frame);
+
     void curveChanged(PropertyTreeItem *item);
 
 public:
@@ -58,15 +66,24 @@ public:
     virtual CurveEditorStyle style() const = 0;
 
 public:
-    CurveEditorModel(QObject *parent = nullptr);
+    CurveEditorModel(double minTime, double maxTime, QObject *parent = nullptr);
 
     ~CurveEditorModel() override;
 
     void setCurrentFrame(int frame);
 
+    void setMinimumTime(double time, bool internal);
+
+    void setMaximumTime(double time, bool internal);
+
     void setCurve(unsigned int id, const AnimationCurve &curve);
 
     void reset(const std::vector<TreeItem *> &items);
+
+protected:
+    double m_minTime = 0.;
+
+    double m_maxTime = 0.;
 };
 
 } // End namespace DesignTools.

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

@@ -230,6 +230,16 @@ void GraphicsView::scrollContent(double x, double y)
 }
 
 void GraphicsView::reset(const std::vector<CurveItem *> &items)
+{
+    m_scene.clear();
+    for (auto *item : items)
+        m_scene.addCurveItem(item);
+
+    applyZoom(m_zoomX, m_zoomY);
+    viewport()->update();
+}
+
+void GraphicsView::updateSelection(const std::vector<CurveItem *> &items)
 {
     const std::vector<CurveItem *> pinnedItems = m_scene.takePinnedItems();
     auto notPinned = [pinnedItems](CurveItem *item) {
@@ -541,6 +551,38 @@ void GraphicsView::drawExtremaY(QPainter *painter, const QRectF &rect)
 }
 #endif
 
+void GraphicsView::drawRangeBar(QPainter *painter, const QRectF &rect)
+{
+    QFontMetrics fm(painter->font());
+    QRectF labelRect = fm.boundingRect(QString("0"));
+    labelRect.moveCenter(rect.center());
+
+    qreal bTick = rect.bottom() - 2;
+    qreal tTick = labelRect.bottom() + 2;
+    QRectF activeRect = QRectF(QPointF(mapTimeToX(m_model->minimumTime()), tTick),
+                               QPointF(mapTimeToX(m_model->maximumTime()), bTick));
+
+    QColor color = Qt::white;
+    color.setAlpha(30);
+
+    painter->fillRect(activeRect, color);
+
+    QColor handleColor(Qt::green);
+    painter->setBrush(handleColor);
+    painter->setPen(handleColor);
+
+    const qreal radius = 5.;
+    QRectF minHandle = rangeMinHandle(rect);
+    painter->drawRoundedRect(minHandle, radius, radius);
+    minHandle.setLeft(minHandle.center().x());
+    painter->fillRect(minHandle, Qt::green);
+
+    QRectF maxHandle = rangeMaxHandle(rect);
+    painter->drawRoundedRect(maxHandle, radius, radius);
+    maxHandle.setRight(maxHandle.center().x());
+    painter->fillRect(maxHandle, Qt::green);
+}
+
 void GraphicsView::drawTimeScale(QPainter *painter, const QRectF &rect)
 {
     painter->save();
@@ -565,6 +607,8 @@ void GraphicsView::drawTimeScale(QPainter *painter, const QRectF &rect)
     for (double i = minimumTime(); i <= maximumTime(); i += timeIncrement)
         paintLabeledTick(i);
 
+    drawRangeBar(painter, rect);
+
     painter->restore();
 }
 
@@ -619,4 +663,28 @@ double GraphicsView::timeLabelInterval(QPainter *painter, double maxTime)
     return deltaTime;
 }
 
+QRectF GraphicsView::rangeMinHandle(const QRectF &rect)
+{
+    QRectF labelRect = fontMetrics().boundingRect(QString("0"));
+    labelRect.moveCenter(rect.center());
+
+    qreal top = rect.bottom() - 2;
+    qreal bottom = labelRect.bottom() + 2;
+    QSize size(10, top - bottom);
+
+    int leftHandleLeft = mapTimeToX(m_model->minimumTime()) - size.width();
+    return QRectF(QPointF(leftHandleLeft, bottom), size);
+}
+
+QRectF GraphicsView::rangeMaxHandle(const QRectF &rect)
+{
+    QRectF labelRect = fontMetrics().boundingRect(QString("0"));
+    labelRect.moveCenter(rect.center());
+
+    qreal bottom = rect.bottom() - 2;
+    qreal top = labelRect.bottom() + 2;
+
+    return QRectF(QPointF(mapTimeToX(m_model->maximumTime()), bottom), QSize(10, top - bottom));
+}
+
 } // End namespace DesignTools.

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

@@ -108,6 +108,8 @@ public:
 
     void reset(const std::vector<CurveItem *> &items);
 
+    void updateSelection(const std::vector<CurveItem *> &items);
+
     void setInterpolation(Keyframe::Interpolation interpol);
 
 protected:
@@ -148,8 +150,14 @@ private:
 
     void drawValueScale(QPainter *painter, const QRectF &rect);
 
+    void drawRangeBar(QPainter *painter, const QRectF &rect);
+
     double timeLabelInterval(QPainter *painter, double maxTime);
 
+    QRectF rangeMinHandle(const QRectF &rect);
+
+    QRectF rangeMaxHandle(const QRectF &rect);
+
 private:
     double m_zoomX;
 

src/plugins/qmldesigner/components/timelineeditor/animationcurveeditormodel.cpp

@@ -35,9 +35,7 @@
 namespace QmlDesigner {
 
 AnimationCurveEditorModel::AnimationCurveEditorModel(double minTime, double maxTime)
-    : CurveEditorModel()
-    , m_minTime(minTime)
-    , m_maxTime(maxTime)
+    : CurveEditorModel(minTime, maxTime)
 {}
 
 AnimationCurveEditorModel::~AnimationCurveEditorModel() {}
@@ -102,16 +100,6 @@ void AnimationCurveEditorModel::setTimeline(const QmlTimeline &timeline)
     reset(items);
 }
 
-void AnimationCurveEditorModel::setMinimumTime(double time)
-{
-    m_minTime = time;
-}
-
-void AnimationCurveEditorModel::setMaximumTime(double time)
-{
-    m_maxTime = time;
-}
-
 DesignTools::ValueType typeFrom(const QmlTimelineKeyframeGroup &group)
 {
     if (group.valueType() == TypeName("double") || group.valueType() == TypeName("real")

src/plugins/qmldesigner/components/timelineeditor/animationcurveeditormodel.h

@@ -49,20 +49,12 @@ public:
 
     void setTimeline(const QmlTimeline &timeline);
 
-    void setMinimumTime(double time);
-
-    void setMaximumTime(double time);
-
 private:
     DesignTools::TreeItem *createTopLevelItem(const QmlTimeline &timeline, const ModelNode &node);
 
     DesignTools::AnimationCurve createAnimationCurve(const QmlTimelineKeyframeGroup &group);
 
     DesignTools::AnimationCurve createDoubleCurve(const QmlTimelineKeyframeGroup &group);
-
-    double m_minTime;
-
-    double m_maxTime;
 };
 
 } // namespace QmlDesigner

src/plugins/qmldesigner/components/timelineeditor/timelinetoolbar.cpp

@@ -38,7 +38,6 @@
 #include <variantproperty.h>
 #include <qmlstate.h>
 #include <qmltimeline.h>
-#include <qmltimelinekeyframegroup.h>
 
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/actionmanager/command.h>
@@ -112,6 +111,23 @@ TimelineToolBar::TimelineToolBar(QWidget *parent)
             &AnimationCurveEditorModel::currentFrameChanged,
             this,
             &TimelineToolBar::currentFrameChanged);
+
+    auto setStartFrameValue = [this](int val) {
+        if (m_firstFrame) {
+            m_firstFrame->setText(QString::number(val, 'f', 0));
+            emit startFrameChanged(val);
+        }
+    };
+    connect(m_curveModel, &AnimationCurveEditorModel::startFrameChanged, setStartFrameValue);
+
+    auto setEndFrameValue = [this](int val) {
+        if (m_lastFrame) {
+            m_lastFrame->setText(QString::number(val, 'f', 0));
+            emit endFrameChanged(val);
+        }
+    };
+    connect(m_curveModel, &AnimationCurveEditorModel::endFrameChanged, setEndFrameValue);
+
     connect(m_curveModel,
             &AnimationCurveEditorModel::curveChanged,
             this,
@@ -181,7 +197,7 @@ void TimelineToolBar::setCurrentTimeline(const QmlTimeline &timeline)
 
 void TimelineToolBar::setStartFrame(qreal frame)
 {
-    m_curveModel->setMinimumTime(frame);
+    m_curveModel->setMinimumTime(frame, true);
 
     auto text = QString::number(frame, 'f', 0);
     m_firstFrame->setText(text);
@@ -198,7 +214,7 @@ void TimelineToolBar::setCurrentFrame(qreal frame)
 
 void TimelineToolBar::setEndFrame(qreal frame)
 {
-    m_curveModel->setMaximumTime(frame);
+    m_curveModel->setMaximumTime(frame, true);
 
     auto text = QString::number(frame, 'f', 0);
     m_lastFrame->setText(text);

src/plugins/qmldesigner/components/timelineeditor/timelinewidget.cpp

@@ -459,6 +459,8 @@ void TimelineWidget::invalidateTimelineDuration(const QmlTimeline &timeline)
     if (timelineView() && timelineView()->model()) {
         QmlTimeline currentTimeline = graphicsScene()->currentTimeline();
         if (currentTimeline.isValid() && currentTimeline == timeline) {
+            m_toolbar->setStartFrame(timeline.startKeyframe());
+            m_toolbar->setEndFrame(timeline.endKeyframe());
             graphicsScene()->setTimeline(timeline);
 
             qreal playHeadFrame = getcurrentFrame(timeline);