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* wbwidget.h - a widget for processing and showing whiteboard
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* Copyright (C) 2006 Joonas Govenius
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program 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
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#include "../sxe/sxesession.h"
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#include "wbnewitem.h"
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#include <QSvgRenderer>
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#include <QGraphicsView>
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#include <QFileDialog>
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/*! \brief The whiteboard widget.
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* Visualizes the whiteboard scene and provides different modes for editing and adding new elements.
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* Local edits to existing elements are handled by the elements themselves
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* as mouse events are passed on to them but new items are temporarily
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* added to the scene while being drawn and only when finished, added to
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class WbWidget : public QGraphicsView
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* Indicates the mode the widget is in.
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enum Mode { Select, Translate, Rotate, Scale, Scroll, Erase, DrawPath, DrawLine, DrawRectangle, DrawEllipse, DrawCircle, DrawPolyline, DrawText, DrawImage };
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/*! \brief Constructor
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* Constructs a new widget with \a session and parent \a parent.
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WbWidget(SxeSession* session, QWidget* parent = 0);
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/*! \brief Returns the session this widget is visualizing.*/
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SxeSession* session();
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/*! \brief Returns the mode this widget is in.*/
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/*! \brief Sets the mode which determines how to react to user interaction.*/
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void setMode(Mode mode);
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/*! \brief Sets the size of the whiteboard.*/
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void setSize(const QSize &s);
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/*! \brief Sets the stroke color of new items.*/
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void setStrokeColor(const QColor &color);
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/*! \brief Sets the stroke color of new items.*/
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void setFillColor(const QColor &color);
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/*! \brief Sets the stroke width of new items.*/
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void setStrokeWidth(int width);
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/*! \brief Returns the size set by setSize().*/
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virtual QSize sizeHint() const;
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/*! \brief Clears the whiteboard. */
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/*! \brief Makes sure that area outside the whiteboard is not shown by zooming if necessary.*/
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virtual void resizeEvent(QResizeEvent * event);
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/*! \brief Passes events to items as specified by the mode.*/
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virtual void mousePressEvent(QMouseEvent * event);
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/*! \brief Passes events to items as specified by the mode.*/
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virtual void mouseMoveEvent(QMouseEvent * event);
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/*! \brief Passes events to items as specified by the mode.*/
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virtual void mouseReleaseEvent(QMouseEvent * event);
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/*! \brief Returns the item representing the node (if any).*/
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WbItem* wbItem(const QDomNode &node);
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/*! \brief The SxeSession synchronizing the document.*/
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/*! \brief The WbScene used for visualizing the document.*/
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/*! \brief The user interaction mode the widget is in.*/
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/*! \brief The stroke color used for new items.*/
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/*! \brief The fill color used for new items.*/
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/*! \brief The stroke width used for new items.*/
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/*! \brief A list of existing WbItems */
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QList<WbItem*> items_;
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// /*! \brief A list of WbItems to be deleted. */
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// QList<WbItem*> deletionQueue_;
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/*! \brief A list of QDomNode's that were added since last documentUpdated() signal received. */
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QList<QDomNode> recentlyRelocatedNodes_;
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/*! \brief A list of WbItem's whose nodes don't have 'id' attributes. */
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QList<WbItem*> idlessItems_;
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/*! \brief Pointer to a new item that is being drawn.*/
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WbNewItem* newWbItem_;
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/*! \brief Boolean used to force adding a vertex to a path being drawn.*/
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/*! \brief Timer used for forcing the addition of a new vertex.*/
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/*! \brief The primary renderer used for rendering the document.*/
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QSvgRenderer renderer_;
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/*! \brief Tries to add 'id' attributes to nodes in deletionQueue_ if they still don't have them.*/
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void handleDocumentUpdated(bool remote);
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/*! \brief Ensures that an item for the nodes in the inspection queue exist
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* iff they're children of the root <svg/>.*/
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/*! \brief Adds a node to the list of nodes that will be processed by inspectNodes() at next documentUpdated().*/
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void queueNodeInspection(const QDomNode &node);
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/*! \brief Removes the item representing the node (if any).
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* Doesn't affect \a node.
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void removeWbItem(const QDomNode &node);
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/*! \brief Removes the item from the scene.
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* Doesn't affect the underlying node.
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void removeWbItem(WbItem *wbitem);
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/*! \brief Tries to add 'id' attributes to nodes in idlessItems_ if they still don't have them.*/
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/*! \brief Adds the item associated with node to idlessItems_. */
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void addToIdLess(const QDomElement &element);
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/*! \brief If node is an 'id' attribute node, adds the ownerElement to idlessItems_. */
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void checkForRemovalOfId(QDomNode node);
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/*! \brief Checks if \a node is the 'viewbox' attribute of the <svg/> element.
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* If so, the scene size is adjusted accordingly.
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void checkForViewBoxChange(const QDomNode &node);
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// /*! \brief Deletes the WbItem's in the deletion queue. */
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// void flushDeletionQueue();
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/*! \brief Rerenders the contents of the document.*/
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src/whiteboarding/wbwidget.h
