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/**********************************************************************
** Copyright (C) 2000 Trolltech AS.  All rights reserved.
**
** This file is part of TQt Designer.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid TQt Enterprise Edition or TQt Professional Edition
** licenses may use this file in accordance with the TQt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about TQt Commercial License Agreements.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifndef FORMWINDOW_H
#define FORMWINDOW_H

#include "command.h"
#include "metadatabase.h"
#include "sizehandle.h"
#include "actiondnd.h"

#include <tqwidget.h>
#include <tqptrdict.h>
#include <tqpixmap.h>
#include <tqwidgetlist.h>
#include <tqmap.h>

class TQPaintEvent;
class TQMouseEvent;
class TQKeyEvent;
class TQPainter;
class TQLabel;
class MainWindow;
class TQTimer;
class TQFocusEvent;
class TQCloseEvent;
class Resource;
class TQResizeEvent;
class BreakLayoutCommand;
class TQPixmap;
class TQSizeGrip;
class Project;
struct DesignerFormWindow;
class FormFile;

#if defined(TQ_CC_MSVC) || defined(TQ_FULL_TEMPLATE_INSTANTIATION)
#include "orderindicator.h"
#else
class OrderIndicator;
#endif

class FormWindow : public TQWidget
{
    Q_OBJECT
  TQ_OBJECT
    TQ_PROPERTY( TQString fileName READ fileName WRITE setFileName )

public:
    FormWindow( FormFile *f, MainWindow *mw, TQWidget *tqparent, const char *name = 0 );
    FormWindow( FormFile *f, TQWidget *tqparent, const char *name = 0 );
    ~FormWindow();

    void init();
    virtual void setMainWindow( MainWindow *w );

    virtual TQString fileName() const;
    virtual void setFileName( const TQString &fn );

    virtual TQPoint grid() const;
    virtual TQPoint gridPoint( const TQPoint &p );

    virtual CommandHistory *commandHistory();

    virtual void undo();
    virtual void redo();
    virtual TQString copy();
    virtual void paste( const TQString &cb, TQWidget *tqparent );
    virtual void lowerWidgets();
    virtual void raiseWidgets();
    virtual void checkAccels();

    virtual void tqlayoutHorizontal();
    virtual void tqlayoutVertical();
    virtual void tqlayoutHorizontalSplit();
    virtual void tqlayoutVerticalSplit();
    virtual void tqlayoutGrid();

    virtual void tqlayoutHorizontalContainer( TQWidget *w );
    virtual void tqlayoutVerticalContainer( TQWidget *w );
    virtual void tqlayoutGridContainer( TQWidget *w );

    virtual void breakLayout( TQWidget *w );

    virtual void selectWidget( TQObject *w, bool select = TRUE );
    virtual void selectAll();
    virtual void updateSelection( TQWidget *w );
    virtual void raiseSelection( TQWidget *w );
    virtual void tqrepaintSelection( TQWidget *w );
    virtual void clearSelection( bool changePropertyDisplay = TRUE );
    virtual void selectWidgets();
    bool isWidgetSelected( TQObject *w );
    virtual void updateChildSelections( TQWidget *w );
    virtual void raiseChildSelections( TQWidget *w );

    virtual void emitUpdateProperties( TQObject *w );
    virtual void emitShowProperties( TQObject *w = 0 );
    virtual void emitSelectionChanged();

    virtual void setPropertyShowingBlocked( bool b );
    bool isPropertyShowingBlocked() const;

    virtual TQLabel *sizePreview() const;
    virtual void checkPreviewGeometry( TQRect &r );

    virtual TQPtrDict<TQWidget> *widgets();
    virtual TQWidgetList selectedWidgets() const;

    virtual TQWidget *designerWidget( TQObject *o ) const;

    virtual void handleContextMenu( TQContextMenuEvent *e, TQWidget *w );
    virtual void handleMousePress( TQMouseEvent *e, TQWidget *w );
    virtual void handleMouseRelease( TQMouseEvent *e, TQWidget *w );
    virtual void handleMouseDblClick( TQMouseEvent *e, TQWidget *w );
    virtual void handleMouseMove( TQMouseEvent *e, TQWidget *w );
    virtual void handleKeyPress( TQKeyEvent *e, TQWidget *w );
    virtual void handleKeyRelease( TQKeyEvent *e, TQWidget *w );

    virtual void updateUndoInfo();

    virtual MainWindow *mainWindow() const { return mainwindow; }

    bool checkCustomWidgets();
    virtual void insertWidget( TQWidget *w, bool checkName = FALSE );
    virtual void removeWidget( TQWidget *w );
    virtual void deleteWidgets();
    virtual void editAdjustSize();
    virtual void editConnections();

    virtual int numSelectedWidgets() const;
    virtual int numVisibleWidgets() const;

    virtual bool hasInsertedChildren( TQWidget *w ) const;

    virtual TQWidget *currentWidget() const { return propertyWidget && propertyWidget->isWidgetType() ? (TQWidget*)propertyWidget : 0; } // #####
    virtual bool unify( TQObject *w, TQString &s, bool changeIt );

    virtual bool isCustomWidgetUsed( MetaDataBase::CustomWidget *w );
    virtual bool isDatabaseWidgetUsed() const;
    virtual bool isDatabaseAware() const;

    virtual TQPoint mapToForm( const TQWidget* w, const TQPoint&  ) const;

    bool isMainContainer( TQObject *w ) const;
    bool isCentralWidget( TQObject *w ) const;
    TQWidget *mainContainer() const { return mContainer; }
    void setMainContainer( TQWidget *w );

    void paintGrid( TQWidget *w, TQPaintEvent *e );

    bool savePixmapInline() const;
    TQString pixmapLoaderFunction() const;
    void setSavePixmapInline( bool b );
    void setPixmapLoaderFunction( const TQString &func );

    bool savePixmapInProject() const;
    void setSavePixmapInProject( bool b );

    void setToolFixed() { toolFixed = TRUE; }

    void setActiveObject( TQObject *o );

    TQPtrList<TQAction> &actionList() { return actions; }
    TQAction *findAction( const TQString &name );

    void setProject( Project *pro );
    Project *project() const;

    void killAccels( TQObject *top );

    DesignerFormWindow *iFace();

    int tqlayoutDefaultSpacing() const;
    int tqlayoutDefaultMargin() const;
    void setLayoutDefaultSpacing( int s );
    void setLayoutDefaultMargin( int s );
    TQString spacingFunction() const;
    TQString marginFunction() const;
    void setSpacingFunction( const TQString &func );
    void setMarginFunction( const TQString &func );
    bool hasLayoutFunctions() const;
    void hasLayoutFunctions( bool b );

    void initSlots();
    FormFile *formFile() const;
    void setFormFile( FormFile *f );

    bool isFake() const { return fake; }
    bool canBeBuddy( const TQWidget* ) const;

public slots:
    virtual void widgetChanged( TQObject *w );
    virtual void currentToolChanged();
    virtual void visibilityChanged();
    virtual void modificationChanged( bool m );

signals:
    void showProperties( TQObject *w );
    void updateProperties( TQObject *w );
    void undoRedoChanged( bool undoAvailable, bool redoAvailable,
			  const TQString &undoCmd, const TQString &redoCmd );
    void selectionChanged();
    void modificationChanged( bool m, FormWindow *fw );
    void modificationChanged( bool m, const TQString &s );
    void fileNameChanged( const TQString &s, FormWindow *fw );

protected:
    virtual void closeEvent( TQCloseEvent *e );
    virtual void focusInEvent( TQFocusEvent *e );
    virtual void focusOutEvent( TQFocusEvent *e );
    virtual void resizeEvent( TQResizeEvent *e );
    void mouseDoubleClickEvent( TQMouseEvent *e ) { handleMouseDblClick( e, mainContainer() ); }
    virtual bool event( TQEvent *e );

private:
    enum RectType { Insert, Rubber };

    void beginUnclippedPainter( bool doNot );
    void endUnclippedPainter();
    void drawConnectionLine();
    void drawSizePreview( const TQPoint &pos, const TQString& text );

    void insertWidget();
    void moveSelectedWidgets( int dx, int dy );

    void startRectDraw( const TQPoint &p, const TQPoint &global, TQWidget *w, RectType t );
    void continueRectDraw( const TQPoint &p, const TQPoint &global, TQWidget *w, RectType t );
    void endRectDraw();

    void checkSelectionsForMove( TQWidget *w );
    BreakLayoutCommand *breakLayoutCommand( TQWidget *w );

    bool allowMove( TQWidget *w );

    void saveBackground();
    void restoreConnectionLine();
    void restoreRect( const TQRect &rect ) ;

    void showOrderIndicators();
    void updateOrderIndicators();
    void repositionOrderIndicators();
    void hideOrderIndicators();

    TQWidget *containerAt( const TQPoint &pos, TQWidget *notParentOf );

private slots:
    void invalidCheckedSelections();
    void updatePropertiesTimerDone();
    void showPropertiesTimerDone();
    void selectionChangedTimerDone();
    void windowsRepaintWorkaroundTimerTimeout();

private:
    int currTool;
    bool oldRectValid, widgetPressed, drawRubber, checkedSelectionsForMove;
    bool validForBuddy;
    TQRect currRect;
    TQPoint rectAnchor;
    TQPainter *unclippedPainter;
    TQPoint sizePreviewPos;
    TQPixmap sizePreviewPixmap;
    MainWindow *mainwindow;
    TQPtrList<WidgetSelection> selections;
    TQPtrDict<WidgetSelection> usedSelections;
    TQRect widgetGeom, rubber;
    TQPoint oldPressPos, origPressPos;
    CommandHistory commands;
    TQMap<TQWidget*, TQPoint> moving;
    TQWidget *insertParent;
    TQObject *propertyWidget;
    TQLabel *sizePreviewLabel;
    TQTimer *checkSelectionsTimer;
    TQPtrDict<TQWidget> insertedWidgets;
    bool propShowBlocked;
    TQTimer* updatePropertiesTimer, *showPropertiesTimer, *selectionChangedTimer,
    *windowsRepaintWorkaroundTimer;
    TQPoint startPos, currentPos;
    TQWidget *startWidget, *endWidget;
    TQPixmap *buffer;
    TQPtrList<OrderIndicator> orderIndicators;
    TQWidgetList orderedWidgets;
    TQWidgetList stackedWidgets;
    TQWidget *mContainer;
    bool pixInline, pixProject;
    TQString pixLoader;
    bool toolFixed;
    TQPtrList<TQAction> actions;
    Project *proj;
    DesignerFormWindow *iface;
    TQWidget* targetContainer;
    TQPalette restorePalette;
    bool hadOwnPalette;
    int defSpacing, defMargin;
    TQString spacFunction, margFunction;
    bool hasLayoutFunc;
    FormFile *ff;
    bool fake;

};

#endif