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251 lines
8.1 KiB
251 lines
8.1 KiB
/* This file is part of the KDE project
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Copyright (C) 2003 Lucijan Busch <lucijan@gmx.at>
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Copyright (C) 2004 Cedric Pasteur <cedric.pasteur@free.fr>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef FORMEDITORCONTAINER_H
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#define FORMEDITORCONTAINER_H
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#include <tqobject.h>
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#include <tqguardedptr.h>
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#include <tqptrlist.h>
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#include <tqwidget.h>
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#include "utils.h"
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class TQEvent;
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class TQWidget;
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class TQLayout;
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namespace KFormDesigner {
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class Container;
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class WidgetLibrary;
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class ObjectTreeItem;
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class Form;
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/**
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* This class is used to filter the events from any widget (and all its subwidgets)
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* and direct it to the Container.
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*/
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//! A class for redirecting events
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class KFORMEDITOR_EXPORT EventEater : public TQObject
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{
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Q_OBJECT
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public:
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/*! Constructs eater object. All events for \a widget and it's subwidgets
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will be redirected to \a container. \a container will be also parent of eater object,
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so you don't need to care about deleting it. */
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EventEater(TQWidget *widget, TQObject *container);
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~EventEater();
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//! Sets the object which will receive the events
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void setContainer(TQObject *container) { m_container = container; }
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bool eventFilter(TQObject *o, TQEvent *ev);
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private:
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TQGuardedPtr<TQWidget> m_widget;
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TQGuardedPtr<TQObject> m_container;
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};
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/**
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* This class makes a container out of any TQWidget. You can then create child widgets, and
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the background is dotted.
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*/
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//! A class to make a container from any widget
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class KFORMEDITOR_EXPORT Container : public TQObject
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{
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Q_OBJECT
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public:
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enum LayoutType { NoLayout=0, HBox, VBox, Grid, HFlow, VFlow, /* special types */ HSplitter, VSplitter };
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/**
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* Creates a Container from the widget \a container, which have
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\a toplevel as parent Container. */
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Container(Container *toplevel, TQWidget *container, TQObject *parent=0, const char *name=0);
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virtual ~Container();
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//! \return a pointer to the toplevel Container, or 0 if this Container is toplevel
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Container* toplevel();
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//! \return The form this Container belongs to.
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Form* form() const { return m_form; }
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//! \return The watched widget.
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TQWidget* widget() const { return m_container; }
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//! \return The ObjectTreeItem associated with this Container's widget.
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ObjectTreeItem* objectTree() const { return m_tree; }
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//! Sets the Form which this Container belongs to.
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void setForm(Form *form);
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/*! Sets the ObjectTree of this Container.\n
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* NOTE: this is needed only if we are toplevel. */
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void setObjectTree(ObjectTreeItem *t) { m_tree = t; }
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//! \return a pointer to the TQLayout of this Container, or 0 if there is not.
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TQLayout* layout() const { return m_layout; }
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//! \return the type of the layout associated to this Container's widget (see LayoutType enum).
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LayoutType layoutType() const { return m_layType; }
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//! \return the margin of this Container.
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int layoutMargin() { return m_margin; }
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//! \return the spacing of this Container.
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int layoutSpacing() { return m_spacing; }
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/*! Sets this Container to use \a type of layout. The widget are inserted
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automatically in the layout following their positions.
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\sa createBoxLayout(), createGridLayout() */
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void setLayout(LayoutType type);
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//! Sets the spacing of this Container.
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void setLayoutSpacing(int spacing) { m_spacing = spacing;}
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//! Sets the margin of this Container.
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void setLayoutMargin(int margin) { m_margin = margin;}
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//! \return the string representing the layoutType \a type.
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static TQString layoutTypeToString(int type);
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//! \return the LayoutType (an int) for a given layout name.
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static LayoutType stringToLayoutType(const TQString &name);
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/*! Stops the inline editing of the current widget (as when you click
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on another widget or press Esc). */
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void stopInlineEditing() { m_state = DoingNothing; }
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/*! This is the main function of Container, which filters the event sent
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to the watched widget.\n It takes care of drawing the background and
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the insert rect, of creating the new child widgets, of moving the widgets
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and pop up a menu when right-clicking. */
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virtual bool eventFilter(TQObject *o, TQEvent *e);
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public slots:
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/*! Sets \a selected to be the selected widget of this container
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(and so of the Form). If \a add is true, the formerly selected widget
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is still selected, and the new one is just added. If false, \a selected
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replace the actually selected widget. If \a dontRaise is true, then
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the widget \a selected (and its parent) won't be raised (eg when you
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select widget in ObjectTreeView).
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\sa Form::setSelectedWidget() */
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void setSelectedWidget(TQWidget *selected, bool add, bool dontRaise=false,
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bool moreWillBeSelected = false);
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/*! Unselects the widget \a w. The widget is removed from the Form's list
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and its resizeHandles are removed. */
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void unSelectWidget(TQWidget *w);
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/*! Deletes the widget \a w. Removes it from ObjectTree, and sets selection
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to Container's widget. */
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void deleteWidget(TQWidget *w);
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/*! Recreates the Container layout. Calls this when a widget has been moved
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or added to update the layout. */
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void reloadLayout();
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protected slots:
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/*! This slot is called when the watched widget is deleted. Deletes the Container too. */
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void widgetDeleted();
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protected:
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/*! Internal function to create a HBoxLayout or VBoxLayout for this container.
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\a list is a subclass of TQObjectList that can sort widgets
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following their position (such as HorWidgetList or VerWidgetList). */
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void createBoxLayout(WidgetList *list);
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/*! Internal function to create a KexiFlowLayout. */
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void createFlowLayout();
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/*! Internal function to create a GridLayout. if \a testOnly is true, the layout
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is simulated, and only the widget's grid info aris filled. */
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void createGridLayout(bool testOnly=false);
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void drawConnection(TQMouseEvent *mev);
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void drawSelectionRect(TQMouseEvent *mev);
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void drawInsertRect(TQMouseEvent *mev, TQObject *s);
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void drawCopiedWidgetRect(TQMouseEvent *mev);
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void moveSelectedWidgetsBy(int realdx, int realdy, TQMouseEvent *mev=0);
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private:
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bool handleMouseReleaseEvent(TQObject *s, TQMouseEvent *mev);
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// the watched container and it's toplevel one...
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TQGuardedPtr<TQWidget> m_container;
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TQGuardedPtr<Container> m_toplevel;
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int m_state;
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enum { DoingNothing = 100, DrawingSelectionRect, CopyingWidget,
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MovingWidget, InlineEditing };
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// Layout
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TQLayout *m_layout;
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LayoutType m_layType;
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int m_margin, m_spacing;
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// moving etc.
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TQPoint m_grab;
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//TQPoint m_initialPos;
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TQGuardedPtr<TQWidget> m_moving;
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//TQRect m_copyRect;
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//inserting
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TQPoint m_insertBegin;
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TQRect m_insertRect;
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ObjectTreeItem *m_tree;
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TQGuardedPtr<Form> m_form;
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bool m_mousePressEventReceived;
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TQMouseEvent m_mouseReleaseEvent;
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TQGuardedPtr<TQObject> m_objectForMouseReleaseEvent;
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friend class InsertWidgetCommand;
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friend class PasteWidgetCommand;
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friend class DeleteWidgetCommand;
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friend class FormIO;
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};
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//! Interface for adding dynamically created (at design time) widget to event eater.
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/*! This is currently used by KexiDBFieldEdit from Kexi forms. */
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class KFORMEDITOR_EXPORT DesignTimeDynamicChildWidgetHandler
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{
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public:
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DesignTimeDynamicChildWidgetHandler();
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~DesignTimeDynamicChildWidgetHandler();
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protected:
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void childWidgetAdded(TQWidget* w);
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void assignItem(ObjectTreeItem* item) { m_item = item; }
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private:
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ObjectTreeItem* m_item;
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friend class InsertWidgetCommand;
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friend class FormIO;
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};
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}
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#endif
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