kfd_kdev_part.cpp

/* This file is part of the KDE project
   Copyright (C) 2004 Cedric Pasteur <cedric.pasteur@free.fr>
 
   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.
*/
 
#include <tqworkspace.h>
#include <tqdockarea.h>
#include <tqdockwindow.h>
#include <tqhbox.h>
#include <tqpainter.h>
#include <tqevent.h>
#include <tqobjectlist.h>
 
#include <tdeversion.h>
#include <tdeaction.h>
#include <tdeinstance.h>
#include <tdelocale.h>
#include <tdeaboutdata.h>
#include <kdebug.h>
#include <kstdaction.h>
#include <tdeapplication.h>
#include <kiconloader.h>
#include <tdefiledialog.h>
#include <klibloader.h>
#include <tdemessagebox.h>
 
#include "form.h"
#include "formIO.h"
#include "objecttree.h"
#include "container.h"
#include "formmanager.h"
#include "objecttreeview.h"
 
#include "kfd_kdev_part.h"
 
#define ENABLE_ACTION(name, enable) \
    if(actionCollection()->action( name )) \
        actionCollection()->action( name )->setEnabled( enable )
 
TDEInstance *KFDFactory::m_instance = 0L;
 
KFDFactory::KFDFactory()
: KParts::Factory(0, "libkformdesigner_kdev_part")
{}
 
KFDFactory::~KFDFactory()
{
    if (m_instance)
    {
        delete m_instance->aboutData();
        delete m_instance;
    }
 
    m_instance = 0;
}
 
KParts::Part*
KFDFactory::createPartObject( TQWidget *parentWidget, const char *, TQObject *, const char *name,
  const char *classname, const TQStringList &args)
{
    bool readOnly = (classname == "KParts::ReadOnlyPart");
    KFormDesignerKDevPart *part = new KFormDesignerKDevPart(parentWidget, name, readOnly, args);
    return part;
}
 
TDEInstance*
KFDFactory::instance()
{
    if (!m_instance)
        m_instance = new TDEInstance(aboutData());
    return m_instance;
}
 
TDEAboutData*
KFDFactory::aboutData()
{
    TDEAboutData *about = new TDEAboutData("kformdesigner_kdev_part", I18N_NOOP("Form Designer Part"), "0.3");
    return about;
}
 
// copied from kfd_part.cpp
class KFDPart_FormManager : public KFormDesigner::FormManager
{
    public:
        KFDPart_FormManager(KFormDesignerPart *part, int options = 0, const char *name = 0)
         : KFormDesigner::FormManager(part, options, name)
         , m_part(part)
        {
        }
 
        virtual TDEAction* action( const char* name)
        {
            return m_part->actionCollection()->action( name );
        }
 
        virtual void enableAction( const char* name, bool enable ) {
            if(m_part->actionCollection()->action( name ))
                m_part->actionCollection()->action( name )->setEnabled( enable );
        }
 
        KFormDesignerPart *m_part;
};
 
 
KFormDesigner::WidgetLibrary* KFormDesignerKDevPart::static_formsLibrary = 0L;
 
KFormDesignerKDevPart::KFormDesignerKDevPart(TQWidget *parent, const char *name, bool readOnly, const TQStringList &args)
: Designer(parent, name), m_count(0)
{
    setInstance(KFDFactory::instance());
    instance()->iconLoader()->addAppDir("kexi");
    instance()->iconLoader()->addAppDir("kformdesigner");
 
    setReadWrite(!readOnly);
    m_uniqueFormMode = true;
    m_openingFile = false;
 
    if(!args.grep("multipleMode").isEmpty())
        setUniqueFormMode(false);
    m_inShell = (!args.grep("shell").isEmpty());
 
    TQHBox *container = new TQHBox(parent, "kfd_container_widget");
    container->setFocusPolicy(TQWidget::ClickFocus);
 
    m_workspace = new TQWorkspace(container, "kfd_workspace");
    m_workspace->show();
    TQStringList supportedFactoryGroups;
/* @todo add configuration for supported factory groups */
    static_formsLibrary = KFormDesigner::FormManager::createWidgetLibrary( 
        new KFDPart_FormManager(this, 0, "kfd_manager"), supportedFactoryGroups );
 
    if(!readOnly)
    {
        TQDockArea *dockArea = new TQDockAreaQt::Vertical, TQDockArea::Reverse, container, "kfd_part_dockarea");
 
        TQDockWindow *dockTree = new TQDockWindow(dockArea);
        KFormDesigner::ObjectTreeView *view = new KFormDesigner::ObjectTreeView(dockTree);
        dockTree->setWidget(view);
        dockTree->setCaption(i18n("Objects"));
        dockTree->setResizeEnabled(true);
        dockTree->setFixedExtentWidth(256);
 
        TQDockWindow *dockEditor = new TQDockWindow(dockArea);
        KoProperty::Editor *editor = new KoProperty::Editor(dockEditor);
        dockEditor->setWidget(editor);
        dockEditor->setCaption(i18n("Properties"));
        dockEditor->setResizeEnabled(true);
 
        KFormDesigner::FormManager::self()->setEditor(editor);
        KFormDesigner::FormManager::self()->setObjectTreeView(view);
 
        setupActions();
        setModified(false);
 
        // action stuff
        connect(KFormDesigner::FormManager::self(), TQ_SIGNAL(widgetSelected(KFormDesigner::Form*, bool)), TQ_SLOT(slotWidgetSelected(KFormDesigner::Form*, bool)));
        connect(KFormDesigner::FormManager::self(), TQ_SIGNAL(formWidgetSelected(KFormDesigner::Form*)), TQ_SLOT(slotFormWidgetSelected(KFormDesigner::Form*)));
        connect(KFormDesigner::FormManager::self(), TQ_SIGNAL(noFormSelected()), TQ_SLOT(slotNoFormSelected()));
        connect(KFormDesigner::FormManager::self(), TQ_SIGNAL(undoEnabled(bool, const TQString&)), TQ_SLOT(setUndoEnabled(bool, const TQString&)));
        connect(KFormDesigner::FormManager::self(), TQ_SIGNAL(redoEnabled(bool, const TQString&)), TQ_SLOT(setRedoEnabled(bool, const TQString&)));
 
        connect(KFormDesigner::FormManager::self(), TQ_SIGNAL(dirty(KFormDesigner::Form*, bool)), this, TQ_SLOT(slotFormModified(KFormDesigner::Form*, bool)));
 
        connect(KFormDesigner::FormManager::self(), TQ_SIGNAL(createFormSlot(KFormDesigner::Form*, const TQString&, const TQString&)),
            this, TQ_SLOT(slotCreateFormSlot(KFormDesigner::Form*, const TQString&, const TQString &)));
    }
 
    container->show();
    setWidget(container);
    connect(m_workspace, TQ_SIGNAL(windowActivated(TQWidget*)), KFormDesigner::FormManager::self(), TQ_SLOT(windowChanged(TQWidget*)));
    slotNoFormSelected();
}
 
KFormDesigner::WidgetLibrary* KFormDesignerKDevPart::formsLibrary()
{
    return static_formsLibrary;
}
 
void
KFormDesignerKDevPart::setupActions()
{
    KStdAction::open(this, TQ_SLOT(open()), actionCollection());
    KStdAction::openNew(this, TQ_SLOT(createBlankForm()), actionCollection());
    KStdAction::save(this, TQ_SLOT(save()), actionCollection());
    KStdAction::saveAs(this, TQ_SLOT(saveAs()), actionCollection());
    KStdAction::cut(KFormDesigner::FormManager::self(), TQ_SLOT(cutWidget()), actionCollection());
    KStdAction::copy(KFormDesigner::FormManager::self(), TQ_SLOT(copyWidget()), actionCollection());
    KStdAction::paste(KFormDesigner::FormManager::self(), TQ_SLOT(pasteWidget()), actionCollection());
    KStdAction::undo(KFormDesigner::FormManager::self(), TQ_SLOT(undo()), actionCollection());
    KStdAction::redo(KFormDesigner::FormManager::self(), TQ_SLOT(redo()), actionCollection());
    KStdAction::selectAll(KFormDesigner::FormManager::self(), TQ_SLOT(selectAll()), actionCollection());
    new TDEAction(i18n("Clear Widget Contents"), "edit-clear", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(clearWidgetContent()), actionCollection(), "clear_contents");
    new TDEAction(i18n("Delete Widget"), "edit-delete", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(deleteWidget()), actionCollection(), "edit_delete");
    new TDEAction(i18n("Preview Form"), "document-print-preview", "Ctrl+T", this, TQ_SLOT(slotPreviewForm()), actionCollection(), "preview_form");
    new TDEAction(i18n("Edit Tab Order"), "tab_order", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(editTabOrder()), actionCollection(), "taborder");
    new TDEAction(i18n("Edit Pixmap Collection"), "icons", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(editFormPixmapCollection()), actionCollection(), "pixmap_collection");
    new TDEAction(i18n("Edit Form Connections"), "connections", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(editConnections()), actionCollection(), "form_connections");
 
    new TDEAction(i18n("Lay Out Widgets &Horizontally"), TQString(), TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(layoutHBox()), actionCollection(), "layout_hbox");
    new TDEAction(i18n("Lay Out Widgets &Vertically"), TQString(), TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(layoutVBox()), actionCollection(), "layout_vbox");
    new TDEAction(i18n("Lay Out Widgets in &Grid"), TQString(), TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(layoutGrid()), actionCollection(), "layout_grid");
    new TDEAction(i18n("&Break Layout"), TQString(), TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(breakLayout()), actionCollection(), "break_layout");
 
    new TDEAction(i18n("Bring Widget to Front"), "raise", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(bringWidgetToFront()), actionCollection(), "format_raise");
    new TDEAction(i18n("Send Widget to Back"), "lower", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(sendWidgetToBack()), actionCollection(), "format_lower");
 
    TDEActionMenu *alignMenu = new TDEActionMenu(i18n("Align Widgets' Positions"), "aopos2grid", actionCollection(), "align_menu");
    alignMenu->insert( new TDEAction(i18n("To Left"), "aoleft", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(alignWidgetsToLeft()), actionCollection(), "align_to_left") );
    alignMenu->insert( new TDEAction(i18n("To Right"), "aoright", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(alignWidgetsToRight()), actionCollection(), "align_to_right") );
    alignMenu->insert( new TDEAction(i18n("To Top"), "aotop", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(alignWidgetsToTop()), actionCollection(), "align_to_top") );
    alignMenu->insert( new TDEAction(i18n("To Bottom"), "aobottom", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(alignWidgetsToBottom()), actionCollection(), "align_to_bottom") );
    alignMenu->insert( new TDEAction(i18n("To Grid"), "aopos2grid", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(alignWidgetsToGrid()), actionCollection(), "align_to_grid") );
 
    TDEActionMenu *sizeMenu = new TDEActionMenu(i18n("Adjust Widgets' Sizes"), "aogrid", actionCollection(), "adjust_size_menu");
    sizeMenu->insert( new TDEAction(i18n("To Fit"), "aofit", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(adjustWidgetSize()), actionCollection(), "adjust_to_fit") );
    sizeMenu->insert( new TDEAction(i18n("To Grid"), "aogrid", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(adjustSizeToGrid()), actionCollection(), "adjust_size_grid") );
    sizeMenu->insert( new TDEAction(i18n("To Shortest"), "aoshortest", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(adjustHeightToSmall()), actionCollection(), "adjust_height_small") );
    sizeMenu->insert( new TDEAction(i18n("To Tallest"), "aotallest", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(adjustHeightToBig()), actionCollection(), "adjust_height_big") );
    sizeMenu->insert( new TDEAction(i18n("To Narrowest"), "aonarrowest", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(adjustWidthToSmall()), actionCollection(), "adjust_width_small") );
    sizeMenu->insert( new TDEAction(i18n("To Widest"), "aowidest", TDEShortcut(0), KFormDesigner::FormManager::self(), TQ_SLOT(adjustWidthToBig()), actionCollection(), "adjust_width_big") );
 
    if(m_inShell)
        setXMLFile("kformdesigner_part_shell.rc");
    else
        setXMLFile("kformdesigner_part.rc");
    KFormDesigner::FormManager::self()->createActions(formsLibrary(), actionCollection(), this);
}
 
void
KFormDesignerKDevPart::createBlankForm()
{
    if(KFormDesigner::FormManager::self()->activeForm() && m_uniqueFormMode)
    {
        m_openingFile = true;
        closeURL();
        m_openingFile = false;
    }
 
    if(m_uniqueFormMode && KFormDesigner::FormManager::self()->activeForm() && !KFormDesigner::FormManager::self()->activeForm()->isModified() && KFormDesigner::FormManager::self()->activeForm()->filename().isNull())
        return;  // active form is already a blank one
 
    TQString n = i18n("Form") + TQString::number(++m_count);
    Form *form = new Form(formsLibrary(), n.latin1());
    FormWidgetBase *w = new FormWidgetBase(this, m_workspace, n.latin1());
 
    w->setCaption(n);
    w->setIcon(SmallIcon("form"));
    w->resize(350, 300);
    w->show();
    w->setFocus();
 
    form->createToplevel(w, w);
    KFormDesigner::FormManager::self()->importForm(form);
}
 
void
KFormDesignerKDevPart::open()
{
    m_openingFile = true;
    KURL url = KFileDialog::getOpenURL("::kformdesigner", i18n("*.ui|TQt Designer UI Files"), m_workspace->topLevelWidget());
    if(!url.isEmpty())
        ReadWritePart::openURL(url);
    m_openingFile = false;
}
 
bool
KFormDesignerKDevPart::openFile()
{
    Form *form = new Form(formsLibrary());
    FormWidgetBase *w = new FormWidgetBase(this, m_workspace);
    form->createToplevel(w, w);
 
    if(!KFormDesigner::FormIO::loadForm(form, w, m_file))
    {
        delete form;
        delete w;
        return false;
    }
 
    w->show();
    KFormDesigner::FormManager::self()->importForm(form, !isReadWrite());
    return true;
}
 
bool
KFormDesignerKDevPart::saveFile()
{
    KFormDesigner::FormIO::saveForm(KFormDesigner::FormManager::self()->activeForm(), m_file);
    return true;
}
 
void
KFormDesignerKDevPart::saveAs()
{
    KURL url = KFileDialog::getSaveURL("::kformdesigner", i18n("*.ui|TQt Designer UI Files"), m_workspace);
    if(url.isEmpty())
        return;
    else
        ReadWritePart::saveAs(url);
}
 
bool
KFormDesignerKDevPart::closeForm(Form *form)
{
    int res = KMessageBox::warningYesNoCancel( m_workspace->topLevelWidget(),
        i18n( "The form \"%1\" has been modified.\n"
        "Do you want to save your changes or discard them?" ).arg( form->objectTree()->name() ),
        i18n( "Close Form" ), KStdGuiItem::save(), KStdGuiItem::discard() );
 
    if(res == KMessageBox::Yes)
        save();
 
    return (res != KMessageBox::Cancel);
}
 
bool
KFormDesignerKDevPart::closeForms()
{
    TQWidgetList list = m_workspace->windowList(TQWorkspace::CreationOrder);
    for(TQWidget *w = list.first(); w; w = list.next())
        if(w->close() == false)
            return false;
 
    return true;
}
 
bool
KFormDesignerKDevPart::closeURL()
{
    if(!KFormDesigner::FormManager::self()->activeForm())
        return true;
 
    if(m_uniqueFormMode || !m_openingFile)
        return closeForms();
 
    return true;
}
 
void
KFormDesignerKDevPart::slotFormModified(Form *, bool isDirty)
{
    setModified(isDirty);
}
 
void
KFormDesignerKDevPart::slotPreviewForm()
{
    if(!KFormDesigner::FormManager::self()->activeForm())
        return;
 
    FormWidgetBase *w = new FormWidgetBase(this, m_workspace);
    KFormDesigner::FormManager::self()->previewForm(KFormDesigner::FormManager::self()->activeForm(), w);
}
 
void
KFormDesignerKDevPart::slotWidgetSelected(Form *form, bool multiple)
{
    enableFormActions();
    // Enable edit actions
    ENABLE_ACTION("edit_copy", true);
    ENABLE_ACTION("edit_cut", true);
    ENABLE_ACTION("edit_delete", true);
    ENABLE_ACTION("clear_contents", true);
 
    // 'Align Widgets' menu
    ENABLE_ACTION("align_menu", multiple);
    ENABLE_ACTION("align_to_left", multiple);
    ENABLE_ACTION("align_to_right", multiple);
    ENABLE_ACTION("align_to_top", multiple);
    ENABLE_ACTION("align_to_bottom", multiple);
 
    ENABLE_ACTION("adjust_size_menu", true);
    ENABLE_ACTION("adjust_width_small", multiple);
    ENABLE_ACTION("adjust_width_big", multiple);
    ENABLE_ACTION("adjust_height_small", multiple);
    ENABLE_ACTION("adjust_height_big", multiple);
 
    ENABLE_ACTION("format_raise", true);
    ENABLE_ACTION("format_lower", true);
 
    // If the widgets selected is a container, we enable layout actions
    if(!multiple)
    {
        KFormDesigner::ObjectTreeItem *item = form->objectTree()->lookup( form->selectedWidgets()->first()->name() );
        if(item && item->container())
            multiple = true;
    }
    // Layout actions
    ENABLE_ACTION("layout_hbox", multiple);
    ENABLE_ACTION("layout_vbox", multiple);
    ENABLE_ACTION("layout_grid", multiple);
 
    KFormDesigner::Container *container = KFormDesigner::FormManager::self()->activeForm()->activeContainer();
    ENABLE_ACTION("break_layout", (container->layoutType() != KFormDesigner::Container::NoLayout));
}
 
void
KFormDesignerKDevPart::slotFormWidgetSelected(Form *form)
{
    disableWidgetActions();
    enableFormActions();
 
    // Layout actions
    ENABLE_ACTION("layout_hbox", true);
    ENABLE_ACTION("layout_vbox", true);
    ENABLE_ACTION("layout_grid", true);
    ENABLE_ACTION("break_layout", (form->toplevelContainer()->layoutType() != KFormDesigner::Container::NoLayout));
}
 
void
KFormDesignerKDevPart::slotNoFormSelected()
{
    disableWidgetActions();
 
    // Disable paste action
    ENABLE_ACTION("edit_paste", false);
 
    ENABLE_ACTION("edit_undo", false);
    ENABLE_ACTION("edit_redo", false);
 
    // Disable 'Tools' actions
    ENABLE_ACTION("pixmap_collection", false);
    ENABLE_ACTION("form_connections", false);
    ENABLE_ACTION("taborder", false);
    ENABLE_ACTION("change_style", false);
 
    // Disable items in 'File'
    ENABLE_ACTION("file_save", false);
    ENABLE_ACTION("file_save_as", false);
    ENABLE_ACTION("preview_form", false);
}
 
void
KFormDesignerKDevPart::enableFormActions()
{
    // Enable 'Tools' actions
    ENABLE_ACTION("pixmap_collection", true);
    ENABLE_ACTION("form_connections", true);
    ENABLE_ACTION("taborder", true);
    ENABLE_ACTION("change_style", true);
 
    // Enable items in 'File'
    ENABLE_ACTION("file_save", true);
    ENABLE_ACTION("file_save_as", true);
    ENABLE_ACTION("preview_form", true);
 
    ENABLE_ACTION("edit_paste", KFormDesigner::FormManager::self()->isPasteEnabled());
    ENABLE_ACTION("edit_select_all", true);
}
 
void
KFormDesignerKDevPart::disableWidgetActions()
{
    // Disable edit actions
    ENABLE_ACTION("edit_copy", false);
    ENABLE_ACTION("edit_cut", false);
    ENABLE_ACTION("edit_delete", false);
    ENABLE_ACTION("clear_contents", false);
 
    // Disable format functions
    ENABLE_ACTION("align_menu", false);
    ENABLE_ACTION("align_to_left", false);
    ENABLE_ACTION("align_to_right", false);
    ENABLE_ACTION("align_to_top", false);
    ENABLE_ACTION("align_to_bottom", false);
    ENABLE_ACTION("adjust_size_menu", false);
    ENABLE_ACTION("format_raise", false);
    ENABLE_ACTION("format_lower", false);
 
    ENABLE_ACTION("layout_hbox", false);
    ENABLE_ACTION("layout_vbox", false);
    ENABLE_ACTION("layout_grid", false);
    ENABLE_ACTION("break_layout", false);
}
 
void
KFormDesignerKDevPart::setUndoEnabled(bool enabled, const TQString &text)
{
    TDEAction *undoAction = actionCollection()->action("edit_undo");
    if(undoAction)
    {
        undoAction->setEnabled(enabled);
        if(!text.isNull())
            undoAction->setText(text);
    }
}
 
void
KFormDesignerKDevPart::setRedoEnabled(bool enabled, const TQString &text)
{
    TDEAction *redoAction = actionCollection()->action("edit_redo");
    if(redoAction)
    {
        redoAction->setEnabled(enabled);
        if(!text.isNull())
            redoAction->setText(text);
    }
}
 
void
KFormDesignerKDevPart::slotCreateFormSlot(Form *form, const TQString &widget, const TQString &signal)
{
    Function f;
    f.returnType = "void";
    f.function = widget + "_" + signal;
    f.specifier = "non virtual";
    f.access = "public";
    f.type = ftTQtSlot;
    emit addedFunction(designerType(), form->objectTree()->name(), f);
}
 
KFormDesignerKDevPart::~KFormDesignerKDevPart()
{
}
 
 
 
//repaint all children widgets
static void repaintAll(TQWidget *w)
{
    TQObjectList *list = w->queryList("TQWidget");
    TQObjectListIt it(*list);
    for (TQObject *obj; (obj=it.current()); ++it ) {
        static_cast<TQWidget*>(obj)->repaint();
    }
    delete list;
}
 
void
FormWidgetBase::drawRects(const TQValueList<TQRect> &list, int type)
{
    TQPainter p;
    p.begin(this, true);
    bool unclipped = testWFlags( WPaintUnclipped );
    setWFlags( WPaintUnclipped );
 
    if (prev_rect.isValid()) {
        //redraw prev. selection's rectangle
        p.drawPixmap( TQPoint(prev_rect.x()-2, prev_rect.y()-2), buffer, TQRect(prev_rect.x()-2, prev_rect.y()-2, prev_rect.width()+4, prev_rect.height()+4));
    }
    p.setBrush(TQBrush::NoBrush);
    if(type == 1) // selection rect
        p.setPen(TQPen(white, 1, TQt::DotLine));
    else if(type == 2) // insert rect
        p.setPen(TQPen(white, 2));
    p.setRasterOp(XorROP);
 
    prev_rect = TQRect();
    TQValueList<TQRect>::ConstIterator endIt = list.constEnd();
    for(TQValueList<TQRect>::ConstIterator it = list.constBegin(); it != endIt; ++it) {
        p.drawRect(*it);
        prev_rect = prev_rect.unite(*it);
    }
 
    if (!unclipped)
        clearWFlags( WPaintUnclipped );
    p.end();
}
 
void
FormWidgetBase::drawRect(const TQRect& r, int type)
{
    TQValueList<TQRect> l;
    l.append(r);
    drawRects(l, type);
}
 
void
FormWidgetBase::initRect()
{
    repaintAll(this);
    buffer.resize( width(), height() );
    buffer = TQPixmap::grabWindow( winId() );
    prev_rect = TQRect();
}
 
void
FormWidgetBase::clearRect()
{
    TQPainter p;
    p.begin(this, true);
    bool unclipped = testWFlags( WPaintUnclipped );
    setWFlags( WPaintUnclipped );
 
    //redraw entire form surface
    p.drawPixmap( TQPoint(0,0), buffer, TQRect(0,0,buffer.width(), buffer.height()) );
 
    if (!unclipped)
        clearWFlags( WPaintUnclipped );
    p.end();
 
    repaintAll(this);
}
 
void
FormWidgetBase::highlightWidgets(TQWidget *from, TQWidget *to)//, const TQPoint &point)
{
    TQPoint fromPoint, toPoint;
    if(from && from->parentWidget() && (from != this))
        fromPoint = from->parentWidget()->mapTo(this, from->pos());
    if(to && to->parentWidget() && (to != this))
        toPoint = to->parentWidget()->mapTo(this, to->pos());
 
    TQPainter p;
    p.begin(this, true);
    bool unclipped = testWFlags( WPaintUnclipped );
    setWFlags( WPaintUnclipped );
 
    if (prev_rect.isValid()) {
        //redraw prev. selection's rectangle
        p.drawPixmap( TQPoint(prev_rect.x(), prev_rect.y()), buffer, TQRect(prev_rect.x(), prev_rect.y(), prev_rect.width(), prev_rect.height()));
    }
 
    p.setPen( TQPen(TQt::red, 2) );
 
    if(to)
    {
        TQPixmap pix1 = TQPixmap::grabWidget(from);
        TQPixmap pix2 = TQPixmap::grabWidget(to);
 
        if((from != this) && (to != this))
            p.drawLine( from->parentWidget()->mapTo(this, from->geometry().center()), to->parentWidget()->mapTo(this, to->geometry().center()) );
 
        p.drawPixmap(fromPoint.x(), fromPoint.y(), pix1);
        p.drawPixmap(toPoint.x(), toPoint.y(), pix2);
 
        if(to == this)
            p.drawRoundRect(2, 2, width()-4, height()-4, 4, 4);
        else
            p.drawRoundRect(toPoint.x(), toPoint.y(), to->width(), to->height(), 5, 5);
    }
 
    if(from == this)
        p.drawRoundRect(2, 2, width()-4, height()-4, 4, 4);
    else
        p.drawRoundRect(fromPoint.x(),  fromPoint.y(), from->width(), from->height(), 5, 5);
 
    if((to == this) || (from == this))
        prev_rect = TQRect(0, 0, buffer.width(), buffer.height());
    else if(to)
    {
        prev_rect.setX( (fromPoint.x() < toPoint.x()) ? (fromPoint.x() - 5) : (toPoint.x() - 5) );
        prev_rect.setY( (fromPoint.y() < toPoint.y()) ? (fromPoint.y() - 5) : (toPoint.y() - 5) );
        prev_rect.setRight( (fromPoint.x() < toPoint.x()) ? (toPoint.x() + to->width() + 10) : (fromPoint.x() + from->width() + 10) );
        prev_rect.setBottom( (fromPoint.y() < toPoint.y()) ? (toPoint.y() + to->height() + 10) : (fromPoint.y() + from->height() + 10) ) ;
    }
    else
        prev_rect = TQRect(fromPoint.x()- 5,  fromPoint.y() -5, from->width() + 10, from->height() + 10);
 
    if (!unclipped)
        clearWFlags( WPaintUnclipped );
    p.end();
}
 
void
FormWidgetBase::closeEvent(TQCloseEvent *ev)
{
    Form *form = KFormDesigner::FormManager::self()->formForWidget(this);
    if(!form || !form->isModified() || !form->objectTree()) // == preview form
        ev->accept();
    else
    {
        bool close = m_part->closeForm(form);
        if(close)
            ev->accept();
        else
            ev->ignore();
    }
}
 
K_EXPORT_COMPONENT_FACTORY(libkformdesigner_kdev_part, KFDFactory)
 
#include "kfd_kdev_part.moc"