File indexing completed on 2023-05-30 09:03:31

 /*
     SPDX-License-Identifier: GPL-2.0-or-later
     SPDX-FileCopyrightText: 2012 Martin Kuettler <martin.kuettler@gmail.com>
     SPDX-FileCopyrightText: 2018-2021 Alexander Semke <alexander.semke@web.de>
 */
 
 #ifndef WORKSHEETENTRY_H
 #define WORKSHEETENTRY_H
 
 #include <QGraphicsObject>
 
 #include "worksheet.h"
 #include "worksheettextitem.h"
 #include "worksheetcursor.h"
 #include "worksheetcontrolitem.h"
 
 class TextEntry;
 class MarkdownEntry;
 class CommandEntry;
 class ImageEntry;
 class PageBreakEntry;
 class LaTeXEntry;
 
 class WorksheetTextItem;
 class ActionBar;
 
 class QGraphicsSceneContextMenuEvent;
 class QJsonObject;
 class QPainter;
 class QPropertyAnimation;
 class QWidget;
 
 struct AnimationData;
 
 class WorksheetEntry : public QGraphicsObject
 {
   Q_OBJECT
   public:
     explicit WorksheetEntry(Worksheet*);
     ~WorksheetEntry() override;
 
     enum {Type = UserType};
 
     int type() const override;
 
     virtual bool isEmpty()=0;
 
     static WorksheetEntry* create(int t, Worksheet*);
 
     WorksheetEntry* next() const;
     WorksheetEntry* previous() const;
 
     void forceRemove();
 
     void setNext(WorksheetEntry*);
     void setPrevious(WorksheetEntry*);
 
     QRectF boundingRect() const override;
     void paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget* widget = nullptr) override;
 
     virtual bool acceptRichText() = 0;
 
     virtual void setContent(const QString&)=0;
     virtual void setContent(const QDomElement&, const KZip&)=0;
     virtual void setContentFromJupyter(const QJsonObject&)=0;
 
     virtual QDomElement toXml(QDomDocument&, KZip*)=0;
     virtual QJsonValue toJupyterJson()=0;
     virtual QString toPlain(const QString& commandSep, const QString& commentStartingSeq, const QString& commentEndingSeq)=0;
 
     virtual void interruptEvaluation() {};
 
     virtual void showCompletion();
 
     virtual bool focusEntry(int pos = WorksheetTextItem::TopLeft, qreal xCoord = 0);
 
     virtual qreal setGeometry(qreal x, qreal entry_zone_x, qreal y, qreal w);
     virtual void layOutForWidth(qreal entry_zone_x, qreal w, bool force = false) = 0;
     QPropertyAnimation* sizeChangeAnimation(QSizeF s = QSizeF());
 
     virtual void populateMenu(QMenu*, QPointF);
 
     bool aboutToBeRemoved();
     QSizeF size();
 
     enum EvaluationOption {
         InternalEvaluation, DoNothing, FocusNext, EvaluateNext
     };
 
     virtual WorksheetTextItem* highlightItem();
 
     bool hasActionBar();
 
     enum SearchFlag {SearchCommand=1, SearchResult=2, SearchError=4,
                      SearchText=8, SearchLaTeX=16, SearchAll=31};
 
     virtual WorksheetCursor search(const QString& pattern, unsigned flags,
                                    QTextDocument::FindFlags qt_flags,
                                    const WorksheetCursor& pos = WorksheetCursor());
 
     bool isCellSelected();
     void setCellSelected(bool);
 
     // Colors for colors menus;
     static constexpr int colorsCount = 26;
     static QColor colors[colorsCount];
     static QString colorNames[colorsCount];
 
     static const qreal VerticalMargin;
     static const qreal ControlElementWidth;
     static const qreal ControlElementBorder;
     static const qreal RightMargin;
     static const qreal HorizontalSpacing;
 
   public Q_SLOTS:
     virtual bool evaluate(WorksheetEntry::EvaluationOption evalOp = FocusNext) = 0;
     virtual bool evaluateCurrentItem();
     virtual void updateEntry() = 0;
     virtual void updateAfterSettingsChanges();
 
     void insertCommandEntry();
     void insertTextEntry();
     void insertMarkdownEntry();
     void insertLatexEntry();
     void insertImageEntry();
     void insertPageBreakEntry();
     void insertHorizontalRuleEntry();
     void insertHierarchyEntry();
 
     void insertCommandEntryBefore();
     void insertTextEntryBefore();
     void insertMarkdownEntryBefore();
     void insertLatexEntryBefore();
     void insertImageEntryBefore();
     void insertPageBreakEntryBefore();
     void insertHorizontalRuleEntryBefore();
     void insertHierarchyEntryBefore();
 
     void convertToCommandEntry();
     void convertToTextEntry();
     void convertToMarkdownEntry();
     void convertToLatexEntry();
     void convertToImageEntry();
     void converToPageBreakEntry();
     void convertToHorizontalRuleEntry();
     void convertToHierarchyEntry();
 
     virtual void sizeAnimated();
     virtual void startRemoving();
     bool stopRemoving();
     void moveToPreviousEntry(int pos = WorksheetTextItem::BottomRight, qreal x = 0);
     void moveToNextEntry(int pos = WorksheetTextItem::TopLeft, qreal x = 0);
     void recalculateSize();
 
     // similar to recalculateSize, but the size change is animated
     void animateSizeChange();
     // animate the size change and the opacity of item
     void fadeInItem(QGraphicsObject* item = nullptr, const char* slot = nullptr);
     void fadeOutItem(QGraphicsObject* item = nullptr, const char* slot = "deleteLater()");
     void endAnimation();
 
     void showActionBar();
     void hideActionBar();
 
     virtual void startDrag(QPointF grabPos = QPointF());
 
     void moveToNext(bool updateLayout = true);
     void moveToPrevious(bool updateLayout = true);
 
   Q_SIGNALS:
     void aboutToBeDeleted();
 
   protected:
     Worksheet* worksheet();
     WorksheetView* worksheetView();
     void contextMenuEvent(QGraphicsSceneContextMenuEvent*) override;
     void keyPressEvent(QKeyEvent*) override;
     void evaluateNext(EvaluationOption opt);
 
     void hoverEnterEvent(QGraphicsSceneHoverEvent*) override;
     void hoverLeaveEvent(QGraphicsSceneHoverEvent*) override;
 
     void setSize(QSizeF);
 
     bool animationActive();
     void updateSizeAnimation(QSizeF);
 
     void invokeSlotOnObject(const char* slot, QObject* obj);
 
     virtual void addActionsToBar(ActionBar*);
 
     virtual bool wantToEvaluate() = 0;
     virtual bool wantFocus();
 
     QJsonObject jupyterMetadata() const;
     void setJupyterMetadata(QJsonObject);
 
     virtual void recalculateControlGeometry();
 
     WorksheetControlItem m_controlElement;
 
   protected Q_SLOTS:
     virtual void remove();
     void deleteActionBar();
     void deleteActionBarAnimation();
 
   private:
     QSizeF m_size;
     qreal m_entry_zone_x{0.};
     WorksheetEntry* m_prev{nullptr};
     WorksheetEntry* m_next{nullptr};
     Q_PROPERTY(QSizeF size READ size WRITE setSize)
     AnimationData* m_animation{nullptr};
     ActionBar* m_actionBar{nullptr};
     QPropertyAnimation* m_actionBarAnimation{nullptr};
     bool m_aboutToBeRemoved{false};
     QJsonObject* m_jupyterMetadata{nullptr};
     bool m_isCellSelected{false};
 };
 
 #endif // WORKSHEETENTRY_H