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koffice/kword/KWCanvas.h

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/* This file is part of the KDE project
Copyright (C) 1998, 1999 Reginald Stadlbauer <reggie@kde.org>
Copyright (C) 2002-2006 David Faure <faure@kde.org>
Copyright (C) 2005 Thomas Zander <zander@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 KWCANVAS_H
#define KWCANVAS_H
#include <kprinter.h>
#include <KoRect.h>
#include <tqscrollview.h>
#include <tqstylesheet.h>
#include <KoRichText.h>
#include <KoQueryTrader.h>
#include <KoPicture.h>
#include "KWTextParag.h"
#include "KWFrame.h"
#include "KWVariable.h"
#include "KWCommand.h"
class KWTextFrameSetEdit;
class KWDocument;
class KWFrame;
class KWFrameSet;
class KWFrameSetEdit;
class KWTableFrameSet;
class KWFrameMoveCommand;
class KWViewMode;
class KWFrameViewManager;
class KWGUI;
class KWTableTemplate;
class KoTextParag;
class TQTimer;
class InteractionPolicy;
class KWFrameView;
/**
* Class: KWCanvas
* This class is responsible for the rendering of the frames to
* the screen as well as the interaction with the user via mouse
* and keyboard. There is one per view.
*/
class KWCanvas : public TQScrollView
{
Q_OBJECT
public:
KWCanvas(const TQString& viewMode, TQWidget *parent, KWDocument *d, KWGUI *lGui);
virtual ~KWCanvas();
KWDocument * kWordDocument() const { return m_doc; }
KWGUI * gui() const { return m_gui; }
KWFrameViewManager* frameViewManager() { return m_frameViewManager; }
KWFrameSetEdit *currentFrameSetEdit() const { return m_currentFrameSetEdit; }
void switchViewMode( const TQString& newViewMode );
KWViewMode *viewMode() const { return m_viewMode; }
void repaintAll( bool erase = false );
/**
* Only repaint the frameset @p fs.
* @p resetChanged should only be true for the last view
* (see KWFrameSet::drawContents)
*/
void repaintChanged( KWFrameSet * fs, bool resetChanged );
/** We need to repaint if the window is resized. */
void viewportResizeEvent( TQResizeEvent * );
void print( TQPainter *painter, KPrinter *printer );
bool eventFilter( TQObject *o, TQEvent *e );
bool focusNextPrevChild( bool next);
void setFrameBackgroundColor( const TQBrush &backColor );
void editFrameProperties();
void editFrameProperties( KWFrameSet * frameset );
void pasteFrames();
// Mouse press
void mpCreate( const TQPoint& normalPoint, bool noGrid );
void mpCreatePixmap( const TQPoint& normalPoint, bool noGrid );
// Mouse move
void mmCreate( const TQPoint& normalPoint, bool noGrid );
// Mouse release
void mrEditFrame();
void mrCreateText();
void mrCreatePixmap();
void mrCreatePart();
void mrCreateFormula();
void mrCreateTable();
enum MouseMode {
MM_EDIT = 0,
MM_CREATE_TEXT = 2,
MM_CREATE_PIX = 3,
MM_CREATE_TABLE = 5,
MM_CREATE_FORMULA = 6,
MM_CREATE_PART = 7
};
void setMouseMode( MouseMode _mm );
MouseMode mouseMode()const { return m_mouseMode; }
// makes the user draw the rect for inserting the picture
void insertPicture( const KoPicture& newPicture, TQSize pixmapSize, bool _keepRatio );
void insertPart( const KoDocumentEntry &entry );
void pasteImage( TQMimeSource *e, const KoPoint &docPoint );
// insert a (non-inline) picture at the given position; used by dnd and dcop
void insertPictureDirect( const KoPicture& picture, const KoPoint& pos, const TQSize& sz = TQSize() );
void updateCurrentFormat();
void updateFrameFormat();
// Table creation support - methods used by KWView to reuse the last settings
unsigned int tableRows() const { return m_table.rows; }
void setTableRows( unsigned int rows ) { m_table.rows=rows; }
unsigned int tableCols() const { return m_table.cols; }
void setTableCols( unsigned int cols ) { m_table.cols=cols; }
int tableWidthMode()const { return m_table.width; }
int tableHeightMode()const { return m_table.height; }
bool tableIsFloating()const { return m_table.floating; }
int tableFormat()const { return m_table.format;}
void setTableFormat(int _nb){ m_table.format=_nb;}
TQString tableTemplateName()const { return m_table.tableTemplateName;}
void setTableTemplateName(const TQString &_name) { m_table.tableTemplateName=_name;}
void setPictureInline( bool _inline) { m_picture.pictureInline = _inline;}
bool pictureInline() const { return m_picture.pictureInline; }
void setPictureKeepRatio( bool _keep) { m_picture.keepRatio = _keep;}
bool pictureKeepRatio() const { return m_picture.keepRatio; }
void createTable( unsigned int rows, unsigned int cols,
int /*KWTableFrameSet::CellSize*/ wid, int /*KWTableFrameSet::CellSize*/ hei,
bool isFloating,
KWTableTemplate *tt=0L, int format=31 );
/// The current table (either because one or more cells are selected,
/// or because the cursor is in a table cell
KWTableFrameSet *getCurrentTable()const { return m_currentTable; }
/// When the cursor is in a table cell, this returns the row
int currentTableRow() const;
/// When the cursor is in a table cell, this returns the column
int currentTableCol() const;
//move canvas to show point dPoint (in doc coordinates)
void scrollToOffset( const KoPoint & dPoint );
//for KWTextFrameSetEdit
void dragStarted() { m_mousePressed = false; }
void setXimPosition( int x, int y, int w, int h );
void updateRulerOffsets( int cx = -1, int cy = -1 );
void inlinePictureStarted();
void ensureCursorVisible();
void editFrameSet( KWFrameSet * frameSet, bool onlyText = false );
/**
* Starting editing @p fs if we're not yet doing it.
* In all cases, position the cursor at @p parag and @p index.
*/
void editTextFrameSet( KWFrameSet * fs, KoTextParag* parag, int index );
bool checkCurrentEdit( KWFrameSet * fs, bool onlyText = false);
NoteType footNoteType()const{return m_footEndNote.noteType;}
KWFootNoteVariable::Numbering numberingFootNoteType() const { return m_footEndNote.numberingType;}
void setFootNoteType( NoteType _type ) { m_footEndNote.noteType = _type; }
void setNumberingFootNoteType(KWFootNoteVariable::Numbering _type) { m_footEndNote.numberingType = _type; }
void tableSelectCell(KWTableFrameSet *table, KWFrameSet *cell);
void selectAllFrames( bool select );
KCommand * createTextBox(const KoRect & rect );
// Called by KWTextFrameSetEdit when pgup/pgdown can't go further
// or directly called by pgup/pgdown if not using 'moves caret' feature.
void viewportScroll( bool up );
/// Resets the status bar text
void resetStatusBarText();
/** Returns the caret position in document coordinates.
The current frame must be editable, i.e., a caret is possible. */
KoPoint caretPos();
void applyGrid( KoPoint &p );
bool overwriteMode() const { return m_overwriteMode; }
// Returns the current text edit object, or 0 if
// - no frame is being edited
// - a non-text frame is being edited
KWTextFrameSetEdit* currentTextEdit() const;
bool insertInlinePicture();
protected:
void drawGrid( TQPainter &p, const TQRect& rect );
/**
* Reimplemented from TQScrollView, to draw the contents of the canvas
*/
virtual void drawContents( TQPainter *p, int cx, int cy, int cw, int ch );
/**
* The main drawing method.
* @param painter guess
* @param crect the area to be repainted, in contents coordinates
* @param viewMode the view mode to be used (usually m_viewMode, except when printing)
*/
void drawDocument( TQPainter *painter, const TQRect &crect, KWViewMode* viewMode );
/**
* Draw page borders, but also clear up the space between the frames and the page borders,
* draw the page shadow, and the gray area.
*/
void drawPageBorders( TQPainter * painter, const TQRect & crect, const TQRegion & emptySpaceRegion );
virtual void keyPressEvent( TQKeyEvent *e );
virtual void contentsMousePressEvent( TQMouseEvent *e );
virtual void contentsMouseMoveEvent( TQMouseEvent *e );
virtual void contentsMouseReleaseEvent( TQMouseEvent *e );
virtual void contentsMouseDoubleClickEvent( TQMouseEvent *e );
virtual void contentsDragEnterEvent( TQDragEnterEvent *e );
virtual void contentsDragMoveEvent( TQDragMoveEvent *e );
virtual void contentsDragLeaveEvent( TQDragLeaveEvent *e );
virtual void contentsDropEvent( TQDropEvent *e );
virtual void resizeEvent( TQResizeEvent *e );
KWTableFrameSet * createTable(); // uses m_insRect and m_table to create the table
void terminateCurrentEdit();
bool insertInlineTable();
signals:
// Emitted when the current frameset edit changes
void currentFrameSetEditChanged();
// Emitted by the current frameset edit when its selection changes
void selectionChanged( bool hasSelection );
// Emitted when Mouse Mode changed
void currentMouseModeChanged(int newMouseMode);
// Emitted when frames have been selected or unselected (to disable/enable the UI in kwview)
void frameSelectedChanged();
// Emitted when the document structure has changed
// ### DF: IMHO this should be only emitted by KWDocument (e.g. addFrameSet)
void docStructChanged(int _type);
// Emitted when the insert key is pressed
void overwriteModeChanged( bool m_overwriteMode );
void viewTransformationsChanged();
void updateRuler();
private slots:
void slotContentsMoving( int, int );
void slotNewContentsSize();
void slotMainTextHeightChanged();
void doAutoScroll();
//Terminate editing this frameset, if we were editing it.
void terminateEditing( KWFrameSet *fs );
private:
/**
* Draw the contents of one frameset
* @param resetChanged whether the changed flag should be reset to false while redrawing
*/
void drawFrameSet( KWFrameSet * frameset, TQPainter * painter,
const TQRect & crect, bool onlyChanged, bool resetChanged, KWViewMode* viewMode );
void drawMovingRect( TQPainter & p );
void deleteMovingRect();
/**
* make the parag rectangle have the aspect ratio by changing either the height
* or the width of the ratio.
* @param ratio the ratio the rectangle should have afterwards.
* @param insRect the rectangle that is to be changed in-place
*/
void applyAspectRatio( double ratio, KoRect& insRect );
#ifndef NDEBUG
void printRTDebug( int );
#endif
KWFrameViewManager *m_frameViewManager;
KWDocument *m_doc;
KWFrameSetEdit *m_currentFrameSetEdit;
KWGUI *m_gui;
TQTimer *m_scrollTimer;
bool m_mousePressed;
bool m_printing;
bool m_imageDrag;
//define type of frame (for set inline frame)
bool m_frameInline;
FrameSetType m_frameInlineType;
// Warning: the viewmode is stored here for good design ;)
// but it's owned by the document, since we currently have one viewmode for all views.
KWViewMode *m_viewMode;
// Frame stuff
MouseMode m_mouseMode;
MouseMeaning m_mouseMeaning; // set by mousePress, used by mouseMove
KoRect m_resizedFrameInitialSize; // when resizing a frame
double m_resizedFrameInitialMinHeight; // when resizing a frame
KoRect m_insRect; ///< variable updated and painted to represent the to insert frame
bool m_deleteMovingRect;
KoPicture m_kopicture; // The picture
TQSize m_pixmapSize; // size when inserting a picture (not necessarily the size of the picture)
bool m_keepRatio;//when inserting a picture
KoDocumentEntry m_partEntry; // when inserting a part
int m_rowColResized; // when resizing a row or column
bool m_temporaryStatusBarTextShown; // Indicates if the temporary is shown
double m_previousTableSize; //previous column or row size before resizing it
KoPoint m_lastCaretPos; // position of caret when editing stopped in document coordinates
bool m_overwriteMode;
// Table creation support.
// Having this as a member variable allows to remember and reuse the last settings
struct
{
unsigned int cols;
unsigned int rows;
int format;
int /*KWTableFrameSet::CellSize*/ width;
int /*KWTableFrameSet::CellSize*/ height;
bool floating;
TQString tableTemplateName;
KWTableTemplate *tt;
} m_table;
KWTableFrameSet *m_currentTable;
InteractionPolicy *m_interactionPolicy;
struct
{
NoteType noteType;
KWFootNoteVariable::Numbering numberingType;
} m_footEndNote;
struct
{
bool pictureInline;
bool keepRatio;
}m_picture;
};
/**
* Interaction policy defines the behavior in case the user clicks or drags the mouse.
* The InteractionPolicy is created in the createPolicy() function which defines the
* resulting behavior and initiates a frame-move or a frame-resize, for example.
* The canvas forwards mouseMove events to the handleMouseMove() method and the interaction
* is either finished with finishInteraction() or cancelInteraction() (never both).
*/
class InteractionPolicy {
public:
/**
* Extending classes should implement this method to alter the frames or other data
* based on the new mouse position.
* @param keyState the orred-data of the Shift/Alt/Control buttons being held down
* during the mousemove.
* @param point the new point where the mouse if at. This is in the document (pt-based)
* coordinate system.
*/
virtual void handleMouseMove(TQt::ButtonState keyState, const KoPoint &point) = 0;
/**
* For interactions that are undo-able this method should be implemented to return such
* a command. Implementations should return 0 otherwise.
* @return a command, or 0.
*/
virtual KCommand* createCommand() = 0;
/**
* This method will undo frames based interactions by calling createCommand()
* and unexecuting that.
*/
void cancelInteraction();
/**
* Override to make final changes to the data on the end of an interaction.
*/
virtual void finishInteraction() = 0;
/**
* This instanciates a new policy object and decides which policy is created based on the params.
* @param parent the parent canvas for things like redraw commands.
* @param meaning the mouseMeaning of as it is at 'point'
* @param point the place where the mouseDown is registred.
* @param buttonState which button is used to click, like Qt::LeftButton
* @param keyState which keys are held down at the click, like TQt::ControlButton
*/
static InteractionPolicy* createPolicy(KWCanvas *parent, MouseMeaning meaning, KoPoint &point, TQt::ButtonState buttonState, TQt::ButtonState keyState);
void hadDragEvents() { m_gotDragEvents = true; }
bool gotDragEvents() { return m_gotDragEvents; }
protected:
/**
* Constructor.
* @param parent the parent canvas.
* @param doInit if true this will initialize the m_frames and m_indexFrame variables.
* @param includeInlineFrames if true the m_frames will include inline frames
*/
InteractionPolicy(KWCanvas *parent, bool doInit = true, bool includeInlineFrames = false);
TQValueList<FrameIndex> m_indexFrame;
KWCanvas *m_parent;
TQValueList<KWFrame*> m_frames;
private:
void init();
bool m_gotDragEvents;
};
/**
* A policy that handles resizes of any number of frames.
* Includes support for undo/redo and support for scale from center plus various other
* usability features.
*/
class FrameResizePolicy : public InteractionPolicy {
public:
FrameResizePolicy(KWCanvas *parent, MouseMeaning meaning, KoPoint &point);
void handleMouseMove(TQt::ButtonState keyState, const KoPoint &point);
KCommand *createCommand();
void finishInteraction();
private:
TQValueList<FrameResizeStruct> m_frameResize;
bool m_top, m_bottom, m_left, m_right;
KoRect m_boundingRect;
KoPoint m_hotSpot;
};
/**
* A policy that handles frame moves of any number of frames.
* Includes support for undo/redo and linear moves (moves constrained to one axis)
* plus various other usability features.
*/
class FrameMovePolicy : public InteractionPolicy {
public:
FrameMovePolicy(KWCanvas *parent, KoPoint &point);
void handleMouseMove(TQt::ButtonState keyState, const KoPoint &point);
KCommand *createCommand();
void finishInteraction();
private:
TQValueList<FrameMoveStruct> m_frameMove;
KoPoint m_hotSpot;
KoPoint m_startPoint;
KoRect m_boundingRect;
};
/**
* A policy to select frames.
*/
class FrameSelectPolicy : public InteractionPolicy {
public:
FrameSelectPolicy(KWCanvas *parent, MouseMeaning meaning, KoPoint &point, TQt::ButtonState state, TQt::ButtonState keyState);
void handleMouseMove(TQt::ButtonState keyState, const KoPoint &point);
KCommand *createCommand();
void finishInteraction();
bool isValid() { return m_validSelection; }
private:
bool m_validSelection;
};
#endif