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#pragma once
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#ifndef FUNCTIONSHEET_H
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#define FUNCTIONSHEET_H
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#include "tcommon.h"
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#include "functiontreeviewer.h"
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#include "spreadsheetviewer.h"
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#include "functionselection.h"
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#include "toonzqt/lineedit.h"
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#include <qwidget></qwidget>
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#include <set></set>
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#undef DVAPI
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#undef DVVAR
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#ifdef TOONZQT_EXPORTS
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#define DVAPI DV_EXPORT_API
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#define DVVAR DV_EXPORT_VAR
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#else
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#define DVAPI DV_IMPORT_API
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#define DVVAR DV_IMPORT_VAR
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#endif
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class FunctionSheet;
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class TDoubleParam;
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class TFrameHandle;
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class FunctionSelection;
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class FunctionSheetRowViewer final : public Spreadsheet::RowPanel {
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  FunctionSheet *m_sheet;
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public:
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  FunctionSheetRowViewer(FunctionSheet *parent);
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protected:
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  void paintEvent(QPaintEvent *) override;
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  void mousePressEvent(QMouseEvent *) override;
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  void mouseReleaseEvent(QMouseEvent *) override;
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  void mouseMoveEvent(QMouseEvent *) override;
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  void contextMenuEvent(QContextMenuEvent *) override;
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};
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class FunctionSheetColumnHeadViewer final : public Spreadsheet::ColumnPanel {
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  FunctionSheet *m_sheet;
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  // enable drag and drop the expression arguments
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  QPoint m_dragStartPosition;
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  FunctionTreeModel::Channel *m_draggingChannel;
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  int m_clickedColumn = -1;
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public:
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  FunctionSheetColumnHeadViewer(FunctionSheet *parent);
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protected:
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  void paintEvent(QPaintEvent *) override;
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  void mousePressEvent(QMouseEvent *) override;
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  // update the tooltip
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  void mouseMoveEvent(QMouseEvent *) override;
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  void contextMenuEvent(QContextMenuEvent *) override;
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};
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class FunctionSheetCellViewer final : public Spreadsheet::CellPanel {
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  Q_OBJECT
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  FunctionSheet *m_sheet;
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  DVGui::LineEdit *m_lineEdit;
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  int m_editRow, m_editCol;
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  // for mouse dragging to adjust the value
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  double m_currentValue = 0.0;
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  double m_updatedValue = 0.0;
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  int m_mouseXPosition;
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public:
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  FunctionSheetCellViewer(FunctionSheet *parent);
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  Spreadsheet::DragTool *createDragTool(QMouseEvent *) override;
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protected:
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  void drawCells(QPainter &p, int r0, int c0, int r1, int c1) override;
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  void mouseDoubleClickEvent(QMouseEvent *) override;
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  void mousePressEvent(QMouseEvent *) override;
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  void mouseReleaseEvent(QMouseEvent *) override;
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  void mouseMoveEvent(QMouseEvent *) override;
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  void openContextMenu(QMouseEvent *);
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private slots:
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  void onCellEditorEditingFinished();
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  // double clicking opens the line edit where mouse dragging
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  // can change the value.  It sends a signal to this slot.
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  void onMouseMovedInLineEdit(QMouseEvent *event);
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};
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class FunctionSheet final : public SpreadsheetViewer {
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  Q_OBJECT
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  bool m_showIbtwnValue = true;
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public:
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  FunctionSheet(QWidget *parent = 0, bool isFloating = false);
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  ~FunctionSheet();
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  void setModel(FunctionTreeModel *model);
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  FunctionTreeModel *getModel() const { return m_functionTreeModel; }
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  void setViewer(FunctionViewer *viewer);
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  FunctionViewer *getViewer() const { return m_functionViewer; }
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  void setCurrentFrame(int frame);
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  int getCurrentFrame() const;
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  int getChannelCount();
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  TDoubleParam *getCurve(int column);
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  FunctionTreeModel::Channel *getChannel(int column);
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  QRect getSelectedCells() const override;
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  void selectCells(const QRect &selectedCells) override;
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  FunctionSelection *getSelection() const { return m_selection; }
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  void setSelection(FunctionSelection *selection);  // does NOT get ownership
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  QString getSelectedParamName();
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  int getColumnIndexByCurve(TDoubleParam *param) const;
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  bool anyWidgetHasFocus();
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  // Obtains a pointer to the stage object containing the
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  // parameter of specified column. Returns nullptr for
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  // fx parameter columns.
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  TStageObject *getStageObject(int column);
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  bool isIbtwnValueVisible() { return m_showIbtwnValue; }
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  void setIbtwnValueVisible(bool visible) {
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    m_showIbtwnValue = visible;
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    update();
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  }
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protected:
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  void showEvent(QShowEvent *e) override;
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  void hideEvent(QHideEvent *e) override;
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private:
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  FunctionSheetRowViewer *m_rowViewer;
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  FunctionSheetColumnHeadViewer *m_columnHeadViewer;
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  FunctionSheetCellViewer *m_cellViewer;
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  FunctionSelection *m_selection;
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  FunctionTreeModel *m_functionTreeModel;
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  FunctionViewer *m_functionViewer;
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  QRect m_selectedCells;
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  bool m_isFloating;
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public slots:
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  void updateAll();
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  void onFrameSwitched();
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  /*---
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   * カレントChannelが切り替わったら、NumericalColumnsがそのChannelを表示できるようにスクロールする。---*/
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  void onCurrentChannelChanged(FunctionTreeModel::Channel *);
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};
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#endif