templateview.h

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/*
    Copyright 2006-2019 The QElectroTech Team
    This file is part of QElectroTech.
    
    QElectroTech is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    (at your option) any later version.
    
    QElectroTech is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    
    You should have received a copy of the GNU General Public License
    along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TITLEBLOCK_SLASH_TEMPLATE_VIEW_H
#define TITLEBLOCK_SLASH_TEMPLATE_VIEW_H
#include <QGraphicsView>
#include "titleblocktemplate.h"
class HelperCell;
class SplittedHelperCell;
class TitleBlockTemplateCommand;
class TitleBlockTemplateCellsSet;

class TitleBlockTemplateView : public QGraphicsView {
    Q_OBJECT
    
    // constructors, destructor
    public:
    TitleBlockTemplateView(QWidget * = nullptr);
    TitleBlockTemplateView(QGraphicsScene *, QWidget * = nullptr);
    ~TitleBlockTemplateView() override;
    private:
    TitleBlockTemplateView(const TitleBlockTemplateView &);
    
    // methods and slots
    public:
    TitleBlockTemplate *titleBlockTemplate() const;
    virtual QList<TitleBlockCell *> selectedCells() const;
    virtual TitleBlockTemplateCellsSet selectedCellsSet() const;
    virtual TitleBlockTemplateCellsSet cells(const QRectF &) const;
    virtual void analyzeSelectedCells(bool *, bool *, int *);
    virtual QSizeF templateSize() const;
    virtual qreal templateWidth() const;
    virtual qreal templateHeight() const;
    
    public slots:
    void setTitleBlockTemplate(TitleBlockTemplate *);
    void selectionChanged();
    void zoomIn();
    void zoomOut();
    void zoomFit();
    void zoomReset();
    QList<TitleBlockCell *> cut();
    QList<TitleBlockCell *> copy();
    bool mayPaste();
    QList<TitleBlockCell> pastedCells();
    void paste();
    void addColumnAtEnd();
    void addRowAtEnd();
    void addColumnBefore();
    void addRowBefore();
    void addColumnAfter();
    void addRowAfter();
    void editColumn(HelperCell * = nullptr);
    void editRow(HelperCell * = nullptr);
    void deleteColumn();
    void deleteRow();
    void mergeSelectedCells();
    void splitSelectedCell();
    void refresh();
    void changePreviewWidth();
    void setPreviewWidth(int);
    void updateLayout();
    void rowsDimensionsChanged();
    void columnsDimensionsChanged();
    void updateDisplayedMinMaxWidth();
    void setReadOnly(bool);
    
    protected slots:
    virtual void applyColumnsWidths(bool = true);
    virtual void applyRowsHeights(bool = true);
    virtual void updateRowsHelperCells();
    virtual void updateColumnsHelperCells();
    
    protected:
    void drawBackground(QPainter *, const QRectF &) override;
    virtual void addCells();
    virtual void loadTemplate(TitleBlockTemplate *);
    virtual void init();
    void wheelEvent(QWheelEvent *) override;
    virtual qreal zoomFactor() const;
    virtual void fillWithEmptyCells();
    bool event(QEvent *) override;
    virtual void normalizeCells(QList<TitleBlockCell> &, int x = 0, int y = 0) const;
    
    signals:
    void selectedCellsChanged(QList<TitleBlockCell *>);
    void gridModificationRequested(TitleBlockTemplateCommand *);
    void previewWidthChanged(int, int);
    
    private:
    QList<QAction *> rowsActions() const;
    QList<QAction *> columnsActions() const;
    void updateTotalWidthLabel();
    void requestGridModification(TitleBlockTemplateCommand *);
    int lastContextMenuCellIndex() const;
    int indexOf(QGraphicsLayoutItem *);
    void removeItem(QGraphicsLayoutItem *);
    TitleBlockTemplateCellsSet makeCellsSetFromGraphicsItems(const QList<QGraphicsItem *> &) const;
    QString makePrettyToolTip(const QString &);
    
    private slots:
    void updateLastContextMenuCell(HelperCell *);
    void adjustSceneRect();
    
    // attributes
    private:
    TitleBlockTemplate *tbtemplate_;
    QGraphicsGridLayout *tbgrid_;
    QGraphicsWidget *form_;
    int preview_width_;
    SplittedHelperCell *total_width_helper_cell_;
    HelperCell *extra_cells_width_helper_cell_;
    QAction *add_column_before_, *add_row_before_;
    QAction *add_column_after_, *add_row_after_;
    QAction *edit_column_dim_, *edit_row_dim_;
    QAction *delete_column_, *delete_row_;
    QAction *change_preview_width_;
    HelperCell *last_context_menu_cell_;
    int apply_columns_widths_count_;
    int apply_rows_heights_count_;
    bool first_activation_;                
    bool read_only_;                       
};
#endif