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koffice/kspread/kspread_canvas.h

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/* This file is part of the KDE project
Copyright 2006 Stefan Nikolaus <stefan.nikolaus@kdemail.net>
Copyright 1999-2002,2004 Laurent Montel <montel@kde.org>
Copyright 2002-2005 Ariya Hidayat <ariya@kde.org>
Copyright 1999-2001,2003 David Faure <faure@kde.org>
Copyright 2001-2003 Philipp Mueller <philipp.mueller@gmx.de>
Copyright 2002-2003 Norbert Andres <nandres@web.de>
Copyright 2000-2001 Werner Trobin <trobin@kde.org>
Copyright 2002 Harri Porten <porten@kde.org>
Copyright 2002 John Dailey <dailey@vt.edu>
Copyright 1999-2000 Torben Weis <weis@kde.org>
Copyright 2000 Wilco Greven <greven@kde.org>
Copyright 1999 Boris Wedl <boris.wedl@kfunigraz.ac.at>
Copyright 1999 Reginald Stadlbauer <reggie@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KSPREAD_CANVAS
#define KSPREAD_CANVAS
#include <vector>
#include <tqlineedit.h>
#include <tqtooltip.h>
#include <tqpen.h>
#include <ksharedptr.h>
#include <koffice_export.h>
#include "kspread_util.h"
#define YBORDER_WIDTH 50
#define XBORDER_HEIGHT 20
class TQWidget;
class TQTimer;
class TQButton;
class TQPainter;
class TQLabel;
class TQScrollBar;
class KoRect;
class KoPoint;
namespace KSpread
{
class Cell;
class EditWidget;
class Canvas;
class HBorder;
class VBorder;
class Sheet;
class Doc;
class Point;
class Range;
class Region;
class View;
class Selection;
class CellEditor;
class LocationEditWidget;
class ComboboxLocationEditWidget;
class EmbeddedObject;
/**
* The canvas builds a part of the GUI of KSpread.
* It contains the borders, scrollbars,
* editwidget and of course it displays the sheet.
* Especially most of the user interface logic is implemented here.
* That means that this class knows what to do when a key is pressed
* or if the mouse button was clicked.
*/
class KSPREAD_EXPORT Canvas : public TQWidget
{
friend class HBorder;
friend class VBorder;
friend class View;
Q_OBJECT
public:
/**
* The current action associated with the mouse.
* Default is 'NoAction'.
*/
enum MouseActions
{
/** No mouse action (default) */
NoAction,
/** Marking action */
Mark,
/** Merging cell */
ResizeCell,
/** Autofilling */
AutoFill,
/** Resizing the selection */
ResizeSelection
};
enum EditorType { CellEditor, EditWidget };
Canvas (View *_view);
~Canvas( );
View* view() const;
Doc* doc() const;
KSpread::EditWidget* editWidget() const;
KSpread::CellEditor* editor() const;
/**
* @return the usual selection of cells
*/
Selection* selectionInfo() const;
/**
* @return a selection of cells used in formulas
*/
Selection* choice() const;
/**
* @deprecated use selectionInfo()
* Selections are no longer contiguous in general.
* @see Selection::lastRange()
* @see Selection::activeElement()
*/
TQRect selection() const;
/**
* convenience function.
* @return selection's marker
* @see Selection::marker()
*/
TQPoint marker() const;
/**
* convenience function.
* @return selection's marker's column
* @see Selection::marker()
*/
int markerColumn() const;
/**
* convenience function.
* @return selection's marker's row
* @see Selection::marker()
*/
int markerRow() const;
/**
* @return the pen, the default grid is painted with (light gray)
*/
const TQPen& defaultGridPen() const;
/**
* convenience function
* @see View::zoom()
*/
double zoom() const;
/**
* @return the width of the columns before the current screen
*/
double xOffset() const;
/**
* @return the height of the rows before the current screen
*/
double yOffset() const;
/**
* Sets the width of the columns before the current screen
*/
void setXOffset( double _xOffset );
/**
* Sets the height of the rows before the current screen
*/
void setYOffset( double _yOffset );
/**
* @return a rect indicating which cell range is currently visible onscreen
*/
TQRect visibleCells() const;
/**
* @return a pointer to the active sheet
*/
Sheet* activeSheet() const;
/**
* convenience function
* @see Map::findSheet()
*/
Sheet* findSheet( const TQString& _name ) const;
/**
* Validates the selected cell.
*/
void validateSelection();
/**
* Paint all visible cells that have a paint dirty flag set
*/
void paintUpdates();
/**
* Makes sure a cell is visible onscreen by scrolling up/down and left/right
*
* @param location the cell coordinates to scroll to
*/
void scrollToCell(TQPoint location) const;
/**
* Chooses the correct EditorType by looking at
* the current cells value. By default CellEditor is chosen.
*/
void createEditor( bool captureArrowKeys=false );
bool createEditor( EditorType type, bool addFocus = true, bool captureArrowKeys=false );
/**
* Deletes the current cell editor.
*
* @see #createEditor
* @see #editor
* @param saveChanges if true, the edited text is stored in the cell.
* if false, the changes are discarded.
* @param array if true, array formula was entered
*/
void deleteEditor(bool saveChanges, bool array = false);
/**
* Called from @ref EditWidget and CellEditor
* if they loose the focus because the user started a "choose selection".
* This is done because the editor wants to get its focus back afterwards.
* But somehow Canvas must know whether the EditWidget or the CellEditor
* lost the focus when the user clicked on the canvas.
*/
void setLastEditorWithFocus( EditorType type );
/**
* Switches to choose mode and sets the initial selection to the
* position returned by marker().
* Clears the choice.
*/
void startChoose();
/**
* Switches to choose mode and sets the initial @p selection.
*/
void startChoose( const TQRect& selection );
/**
* Switches to selection mode.
* Clear the choice.
*/
void endChoose();
/**
* Switches the choose mode on and off.
* Does not clear the choice.
*/
void setChooseMode(bool state);
/**
* @return @c true if choose mode is enabled, @c false otherwise
*/
bool chooseMode() const;
void equalizeRow();
void equalizeColumn();
/**
* Updates the position widget.
*/
void updatePosWidget();
/**
* Close the cell editor and saves changes.
* @see deleteEditor()
*/
void closeEditor();
// Created by the view since it's layout is managed there,
// but is in fact a sibling of the canvas, which needs to know about it.
void setEditWidget( KSpread::EditWidget * ew );
virtual bool focusNextPrevChild( bool );
/**
* Depending on the offset in "zoomed" screen pixels
* for the horizontal direction,
* the function returns the steps in unzoomed points
* for the autoscroll acceleration
*/
double autoScrollAccelerationX( int offset );
/**
* Depending on the offset in "zoomed" screen pixels
* for the vertical direction,
* the function returns the steps in unzoomed points
* for the autoscroll acceleration
*/
double autoScrollAccelerationY( int offset );
//TODO: These embedded-object related methods need API documentation!
EmbeddedObject* getObject( const TQPoint &pos, Sheet *_sheet );
void selectAllObjects();
void deselectAllObjects();
void selectObject( EmbeddedObject* );
void deselectObject( EmbeddedObject* );
void setMouseSelectedObject(bool b);
bool isObjectSelected();
/**
* @brief Move object by mouse
*
* @param pos The position of the mouse
* @param keepXorYunchanged if true keep x or y position unchanged
*/
void moveObjectsByMouse( KoPoint &pos, bool keepXorYunchanged );
//---- stuff needed for resizing ----
/// resize the m_resizeObject
void resizeObject( ModifyType _modType, const KoPoint & point, bool keepRatio );
/// create KPrResizeCmd
void finishResizeObject( const TQString &name, bool layout = true );
/**
* @brief Display object above the other objects in editiong mode
*
* This is used to bring a single slected object to front, so it is easier
* to modify.
*
* @param object which should be displayed above the other objects
*/
void raiseObject( EmbeddedObject *object );
/**
* @brief Don't display an object above the others
*/
void lowerObject();
/**
* @brief Get the list of objects in the order they should be displayed.
*
* This takes into acount the object set in raiseObject so that it is
* the last one in the list returned (the one that is displayed above all
* the others).
*
* @return List of objects
*/
void displayObjectList( TQPtrList<EmbeddedObject> &list );
KoRect objectRect( bool all ) const;
void repaintObject( EmbeddedObject *obj );
/**
* This is intended to copy the selected objects to the clipboard so that they can be pasted into other
* applications. However, until at least KWord, KSpread, KPresenter, KChart and KFormula have consistant
* support for copying and pasting of OASIS objects the selected objects will just be copied in the form
* of raster graphics
*/
void copyOasisObjects();
//void insertOasisData();
public slots:
void slotScrollVert( int _value );
void slotScrollHorz( int _value );
void slotMaxColumn( int _max_column );
void slotMaxRow( int _max_row );
signals:
void objectSelectedChanged();
void objectSizeChanged();
protected:
virtual void keyPressEvent ( TQKeyEvent* _ev );
virtual void paintEvent ( TQPaintEvent* _ev );
virtual void mousePressEvent( TQMouseEvent* _ev );
virtual void mouseReleaseEvent( TQMouseEvent* _ev );
virtual void mouseMoveEvent( TQMouseEvent* _ev );
virtual void mouseDoubleClickEvent( TQMouseEvent* );
virtual void wheelEvent( TQWheelEvent* );
virtual void focusInEvent( TQFocusEvent* );
virtual void focusOutEvent( TQFocusEvent* );
virtual void resizeEvent( TQResizeEvent * _ev );
virtual void dragMoveEvent(TQDragMoveEvent * _ev);
virtual void dropEvent(TQDropEvent * _ev);
virtual void dragLeaveEvent(TQDragLeaveEvent * _ev);
/**
* Checks to see if there is a size grip for a highlight range at a given position.
* Note that both X and Y coordinates are UNZOOMED. To translate from a zoomed coordinate (eg. position of a mouse event) to
* an unzoomed coordinate, use Doc::unzoomItX and Doc::unzoomItY. The document object
* can be accessed via view()->doc()
* @param x Unzoomed x coordinate to check
* @param y Unzoomed y coordinate to check
* @return @c true if there is a size grip at the specified position, @c false otherwise.
*/
bool highlightRangeSizeGripAt(double x, double y);
private slots:
/**
* Scroll canvas when receiving this signal
*/
void slotAutoScroll(const TQPoint &scrollDist);
void doAutoScroll();
void speakCell(TQWidget* w, const TQPoint& p, uint flags);
private:
virtual bool eventFilter( TQObject *o, TQEvent *e );
HBorder* hBorderWidget() const;
VBorder* vBorderWidget() const;
TQScrollBar* horzScrollBar() const;
TQScrollBar* vertScrollBar() const;
/**
* Returns the area of the document currently visible in a painter's
* window, calculated by taking the painter's window() property and
* translating it by the current x and y offset of the Canvas (taking
* the zoom level into account)
*/
TQRect painterWindowGeometry( const TQPainter& painter ) const;
/**
* Enables clipping and removes the areas on the canvas widget occupied by embedded objects from
* the clip region. This ensures that subsequent drawing operations using the given painter
* don't paint over the area occupied by embedded objects
*/
void clipoutChildren( TQPainter& painter ) const;
/**
* Returns the range of cells which appear in the specified area of the Canvas widget
* For example, cellsInArea( TQRect(0,0,width(),height()) ) returns a range containing all visible cells
*
* @param area The area (in pixels) on the Canvas widget
*/
TQRect cellsInArea( const TQRect area ) const;
/**
* Paints the children
*/
void paintChildren( TQPainter& painter, TQWMatrix& matrix );
/**
* @see #setLastEditorWithFocus
*/
EditorType lastEditorWithFocus() const;
private:
void moveObject( int x, int y, bool key );
void startTheDrag();
/* helpers for the paintUpdates function */
void paintNormalMarker(TQPainter& painter, const KoRect &viewRect);
/**
* Paint the highlighted ranges of cells. When the user is editing a formula in a text box, cells and ranges referenced
* in the formula are highlighted on the canvas.
* @param painter The painter on which to draw the highlighted ranges
* @param viewRect The area currently visible on the canvas
*/
void paintHighlightedRanges(TQPainter& painter, const KoRect& viewRect);
/**
* Calculates the visible region on the canvas occupied by a range of cells on the currently active sheet.
* This is used for drawing the thick border around the current selection or highlights around cell range
* references.
* The results do not take into account the current zoom factor of the sheet,
* use Doc::zoomRect on @p visibleRect after calling this function to get a new rectangle taking
* the zoom level into account.
* @param sheetArea The range of cells on the current sheet
* @param visibleRect This is set to the visible region occupied by the given range of cells
*
*/
void sheetAreaToVisibleRect( const TQRect& sheetArea,
KoRect& visibleRect );
/**
* Calculates the physical region on the canvas widget occupied by a range of cells on
* the currently active sheet.
* Unlike @see sheetAreaToVisibleRect , scrolling the view does not affect sheetAreaToRect.
*
* @param sheetArea The range of cells on the current sheet
* @param visibleRect This is set to the physical region occupied by the given range of cells
*/
void sheetAreaToRect( const TQRect& sheetArea, KoRect& rect );
/**
* helper function in drawing the marker and choose marker.
* @param marker the rectangle that represents the marker being drawn
* (cell coordinates)
* @param viewRect the visible area on the canvas
* @param positions output parameter where the viewable left, top, right, and
* bottom of the marker will be. They are stored in the array
* in that order, and take into account cropping due to part
* of the marker being off screen. This array should have
* at least a size of 4 pre-allocated.
* @param paintSides booleans indicating whether a particular side is visible.
* Again, these are in the order left, top, right, bottom.
* This should be preallocated with a size of at least 4.
*/
void retrieveMarkerInfo( const TQRect &marker, const KoRect &viewRect,
double positions[], bool paintSides[] );
bool formatKeyPress( TQKeyEvent * _ev );
/** helper method for formatKeyPress */
bool formatCellByKey(Cell *cell, int key, const TQRect &rect);
void processClickSelectionHandle(TQMouseEvent *event);
void processLeftClickAnchor();
/** current cursor position, be it marker or choose marker */
TQPoint cursorPos();
/**
* returns the rect that needs to be redrawn
*/
TQRect moveDirection(KSpread::MoveTo direction, bool extendSelection);
void processEnterKey(TQKeyEvent *event);
void processArrowKey(TQKeyEvent *event);
void processEscapeKey(TQKeyEvent *event);
bool processHomeKey(TQKeyEvent *event);
bool processEndKey(TQKeyEvent *event);
bool processPriorKey(TQKeyEvent *event);
bool processNextKey(TQKeyEvent *event);
void processDeleteKey(TQKeyEvent *event);
void processF2Key(TQKeyEvent *event);
void processF4Key(TQKeyEvent *event);
void processOtherKey(TQKeyEvent *event);
bool processControlArrowKey(TQKeyEvent *event);
void processIMEvent( TQIMEvent * event );
/**
* Used in choose mode. Shows/hides the editor depending on the selected
* sheet. Triggers an update of the regions shown in the CellEditor.
* @see CellEditor::updateChoice()
*/
void updateEditor();
/**
* This function sets the paint dirty flag for a @p changedRegion in a
* @p sheet .
* The calculation which cells really should look different with the new
* selection rather than repainting the entire area has to be done before.
* @param sheet the sheet, which contains the cells
* @param changedRegion the cell region to be set as dirty
*/
void setSelectionChangePaintDirty(Sheet* sheet, const Region& changedRegion);
private:
class Private;
Private* d;
};
/**
* HBorder
*/
class HBorder : public TQWidget
{
Q_OBJECT
public:
HBorder( TQWidget *_parent, Canvas *_canvas, View *_view );
~HBorder();
int markerColumn() const { return m_iSelectionAnchor; }
void equalizeColumn( double resize );
void updateColumns( int from, int to );
TQSize sizeHint() const;
private slots:
void doAutoScroll();
protected:
virtual void paintEvent ( TQPaintEvent* _ev );
virtual void mousePressEvent( TQMouseEvent* _ev );
virtual void mouseReleaseEvent( TQMouseEvent* _ev );
virtual void mouseDoubleClickEvent( TQMouseEvent* _ev );
virtual void mouseMoveEvent( TQMouseEvent* _ev );
virtual void wheelEvent( TQWheelEvent* );
virtual void focusOutEvent( TQFocusEvent* ev );
virtual void resizeEvent( TQResizeEvent * _ev );
void paintSizeIndicator( int mouseX, bool firstTime );
private:
Canvas *m_pCanvas;
View *m_pView;
TQTimer * m_scrollTimer;
/**
* Flag that inidicates whether the user wants to mark columns.
* The user may mark columns by dragging the mouse around in th XBorder widget.
* If he is doing that right now, this flag is true. Mention that the user may
* also resize columns by dragging the mouse. This case is not covered by this flag.
*/
bool m_bSelection;
/**
* The column over which the user pressed the mouse button.
* If the user marks columns in the XBorder widget, then this is the initial
* column on which he pressed the mouse button.
*/
int m_iSelectionAnchor;
/**
* Flag that indicates whether the user resizes a column
* The user may resize columns by dragging the mouse around in the HBorder widget.
* If he is doing that right now, this flag is true.
*/
bool m_bResize;
/**
* The column over which the user pressed the mouse button.
* The user may resize columns by dragging the mouse around the XBorder widget.
* This is the column over which he pressed the mouse button. This column is going
* to be resized.
*/
int m_iResizedColumn;
/**
* Last position of the mouse, when resizing.
*/
int m_iResizePos;
/**
* The label used for showing the current size, when resizing
*/
TQLabel *m_lSize;
/**
* True when the mouse button is pressed
*/
bool m_bMousePressed;
private:
};
/**
* VBorder
*/
class VBorder : public TQWidget
{
Q_OBJECT
public:
VBorder( TQWidget *_parent, Canvas *_canvas, View *_view );
~VBorder();
int markerRow() const { return m_iSelectionAnchor; }
void equalizeRow( double resize );
void updateRows( int from, int to );
TQSize sizeHint() const;
private slots:
void doAutoScroll();
protected:
virtual void paintEvent ( TQPaintEvent* _ev );
virtual void mousePressEvent( TQMouseEvent* _ev );
virtual void mouseReleaseEvent( TQMouseEvent* _ev );
virtual void mouseMoveEvent( TQMouseEvent* _ev );
virtual void mouseDoubleClickEvent( TQMouseEvent* _ev );
virtual void wheelEvent( TQWheelEvent* );
virtual void focusOutEvent( TQFocusEvent* ev );
void paintSizeIndicator( int mouseY, bool firstTime );
private:
Canvas *m_pCanvas;
View *m_pView;
TQTimer * m_scrollTimer;
bool m_bSelection;
int m_iSelectionAnchor;
bool m_bResize;
int m_iResizedRow;
int m_iResizePos;
/**
* The label used for showing the current size, when resizing
*/
TQLabel *m_lSize;
/**
* True when the mouse button is pressed
*/
bool m_bMousePressed;
};
/**
* Tooltip, which displays the comment and cell content, when it's too short
*/
class ToolTip : public TQToolTip
{
public:
ToolTip( Canvas* canvas );
protected:
/**
* @reimp
*/
void maybeTip( const TQPoint& p );
private:
Canvas* m_canvas;
};
} // namespace KSpread
#endif // KSPREAD_CANVAS
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