templateview.h

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/*
        Copyright 2006-2026 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 "../titleblocktemplate.h"
 
#include <QGraphicsView>
#include <QGraphicsGridLayout>
#include <QGraphicsLayoutItem>
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