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RetroShare/plugins/qdiagram_plugin/diagramscene.cpp
defnax 87344de7d4 added for plugins own dir 
git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@1850 b45a01b8-16f6-495d-af2f-9b41ad6348cc
2009-11-28 14:21:11 +00:00

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/****************************************************************************
**
** Copyright (C) 2007-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Alternatively you may (at
** your option) use any later version of the GNU General Public
** License if such license has been publicly approved by Trolltech ASA
** (or its successors, if any) and the KDE Free Qt Foundation. In
** addition, as a special exception, Trolltech gives you certain
** additional rights. These rights are described in the Trolltech GPL
** Exception version 1.2, which can be found at
** http://www.trolltech.com/products/qt/gplexception/ and in the file
** GPL_EXCEPTION.txt in this package.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
** you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** In addition, as a special exception, Trolltech, as the sole
** copyright holder for Qt Designer, grants users of the Qt/Eclipse
** Integration plug-in the right for the Qt/Eclipse Integration to
** link to functionality provided by Qt Designer and its related
** libraries.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
** granted herein.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include <QtGui>
#include <iostream>
#include "diagramscene.h"
#define NDEBUG
//! [0]
DiagramScene::DiagramScene(QMenu *itemMenu, QObject *parent)
: QGraphicsScene(parent)
{
myItemMenu = itemMenu;
myMode = MoveItem;
myItemType = DiagramItem::Step;
line = 0;
textItem = 0;
insertedItem = 0;
insertedDrawItem = 0;
insertedPathItem = 0;
copiedItems = 0;
myDx=0.0;
myDy=0.0;
maxZ=0;
myItemColor = Qt::white;
myTextColor = Qt::black;
myLineColor = Qt::black;
myArrow=DiagramPathItem::Path;
myGrid=10.0;
myGridVisible=false;
myGridScale=1;
// no Item in Moveitems
myMoveItems.clear();
// initialisiere Cursor
myCursorWidth = 4.0;
myCursor.setRect(QRectF(-myCursorWidth/2,-myCursorWidth/2,myCursorWidth,myCursorWidth));
myCursor.setPen(QPen(Qt::gray));
myCursor.setZValue(10.0);
addItem(&myCursor);
}
//! [0]
//! [1]
void DiagramScene::setLineColor(const QColor &color)
{
myLineColor = color;
if(insertedPathItem!=0) insertedPathItem->setPen(myLineColor);
if(insertedItem!=0) insertedItem->setPen(myLineColor);
if(insertedDrawItem!=0) insertedDrawItem->setPen(myLineColor);
if (!selectedItems().empty()){
foreach(QGraphicsItem* item,selectedItems()){
switch(item->type()){
case QGraphicsItem::UserType+3:
// Textitem does not possess Linecolor !
break;
case QGraphicsItem::UserType+6:
qgraphicsitem_cast<DiagramPathItem*>(item)->setPen(myLineColor);
qgraphicsitem_cast<DiagramPathItem*>(item)->setBrush(myLineColor);
break;
default:
dynamic_cast<DiagramItem*>(item)->setPen(myLineColor);
break;
}
}
}
}
//! [1]
//! [2]
void DiagramScene::setTextColor(const QColor &color)
{
myTextColor = color;
if (isItemChange(DiagramTextItem::Type)) {
DiagramTextItem *item =
qgraphicsitem_cast<DiagramTextItem *>(selectedItems().first());
item->setDefaultTextColor(myTextColor);
}
}
//! [2]
//! [3]
void DiagramScene::setItemColor(const QColor &color)
{
myItemColor = color;
if(insertedItem!=0) insertedItem->setBrush(myItemColor);
if(insertedDrawItem!=0) insertedDrawItem->setBrush(myItemColor);
if (!selectedItems().empty()){
foreach(QGraphicsItem* item,selectedItems()){
switch(item->type()){
case QGraphicsItem::UserType+3:
// Textitem does not possess Linecolor !
break;
case QGraphicsItem::UserType+6:
// Path does not need Backgroundcolor
break;
default:
dynamic_cast<DiagramItem*>(item)->setBrush(myItemColor);
break;
}
}
}
// old code by Trolltech
/*if (isItemChange(DiagramItem::Type)) {
DiagramItem *item =
qgraphicsitem_cast<DiagramItem *>(selectedItems().first());
item->setBrush(myItemColor);
}*/
}
//! [3]
//! [4]
void DiagramScene::setFont(const QFont &font)
{
myFont = font;
if (isItemChange(DiagramTextItem::Type)) {
QGraphicsTextItem *item =
qgraphicsitem_cast<DiagramTextItem *>(selectedItems().first());
item->setFont(myFont);
// testing
/*
item->setTextWidth(200.0);
QTextCursor cursor = item->textCursor();
cursor.select(QTextCursor::Document);
QTextBlockFormat bfmt = cursor.blockFormat();
bfmt.setAlignment(Qt::AlignHCenter);
cursor.setBlockFormat(bfmt);
item->setTextCursor(cursor);
*/
}
}
//! [4]
void DiagramScene::setMode(Mode mode,bool m_abort)
{
if(m_abort) abort(true);
/*
if(myMode==InsertLine){
if(insertedPathItem!=0){
insertedPathItem->remove();
insertedPathItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
insertedPathItem=0;
}
}
*/
myMode = mode;
switch (mode) {
case MoveItem:
enableAllItems(true);
break;
case MoveItems:
enableAllItems(true);
break;
case CopyItem:
enableAllItems(true);
break;
case CopyingItem:
enableAllItems(false);
break;
case Zoom:
enableAllItems(false);
break;
default:
enableAllItems(false);
break;
}
}
void DiagramScene::enableAllItems(bool enable)
{
foreach(QGraphicsItem* item,items()){
item->setEnabled(enable);
}
}
/*enum DiagramScene::getMode()
{
return mode;
}*/
void DiagramScene::setItemType(DiagramItem::DiagramType type)
{
myItemType = type;
}
void DiagramScene::setItemType(DiagramDrawItem::DiagramType type)
{
myDrawItemType = type;
}
//! [5]
void DiagramScene::editorLostFocus(DiagramTextItem *item)
{
//Debug
#ifdef DEBUG
std::cout << "textItem:" << int(textItem) << std::endl;
if(textItem){
std::cout << "Focus ?:" << textItem->hasFocus() << std::endl;
}
#endif
QTextCursor cursor = item->textCursor();
cursor.clearSelection();
item->setTextCursor(cursor);
#ifdef DEBUG
std::cout << item->toPlainText().toStdString() << std::endl;
#endif
if (item->toPlainText().isEmpty()) {
removeItem(item);
item->deleteLater();
}
// avoid double lose focus, which erroneously activates shortcuts for second textitem
if((textItem==item)or(textItem==0)){
textItem=0;
emit editorHasLostFocus();
}
}
void DiagramScene::editorReceivedFocus(DiagramTextItem *item)
{
emit editorHasReceivedFocus();
}
//! [5]
//! [6]
void DiagramScene::mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent)
{
#ifdef DEBUG
std::cout << "click" << myMode << std::endl;
#endif
if (mouseEvent->button() == Qt::RightButton){
switch (myMode) {
case InsertItem:
if (insertedItem != 0){
insertedItem->rotate(90);
}
break;
default:
;
}
return;
}
if (mouseEvent->button() == Qt::MidButton){
switch (myMode) {
case InsertLine:
if (insertedPathItem != 0){
insertedPathItem->updateLast(onGrid(mouseEvent->scenePos()));
insertedPathItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
insertedPathItem->setEnabled(false);
insertedPathItem = 0;
}
break;
default:
;
}
return;
}
if (mouseEvent->button() != Qt::LeftButton)
return;
//DiagramItem *item;
switch (myMode) {
case InsertItem:
if (insertedItem == 0){
insertedItem = new DiagramItem(myItemType, myItemMenu);
insertedItem->setBrush(myItemColor);
insertedItem->setPen(myLineColor);
insertedItem->setZValue(maxZ);
maxZ+=0.1;
addItem(insertedItem);
}
insertedItem->setPos(onGrid(mouseEvent->scenePos()));
insertedItem->setEnabled(false);
emit itemInserted(insertedItem);
insertedItem = 0;
break;
//! [6] //! [7]
case InsertDrawItem:
if (insertedDrawItem == 0){
insertedDrawItem = new DiagramDrawItem(myDrawItemType, myItemMenu);
insertedDrawItem->setBrush(myItemColor);
insertedDrawItem->setPen(myLineColor);
insertedDrawItem->setZValue(maxZ);
maxZ+=0.1;
addItem(insertedDrawItem);
insertedDrawItem->setPos(onGrid(mouseEvent->scenePos()));
}
else
{
insertedDrawItem->setPos2(onGrid(mouseEvent->scenePos()));
insertedDrawItem->setEnabled(false);
insertedDrawItem = 0;
}
break;
case MoveItems:
{
QPointF point=onGrid(mouseEvent->scenePos());
if(!myMoveItems.isEmpty()){
qreal dx=point.rx()-myDx;
qreal dy=point.ry()-myDy;
foreach(QGraphicsItem* item,myMoveItems){
if(item->parentItem()!=0){
if(!item->parentItem()->isSelected()) item->moveBy(-dx,-dy);
}
else {
item->moveBy(dx,dy);
}
}
myMoveItems.clear();
myMode=MoveItem;
}
else
{
if(!selectedItems().isEmpty()){
// l<>sche doppelte Verweise (Child&selected)
myMoveItems=selectedItems();
foreach(QGraphicsItem* item,myMoveItems){
if(item->parentItem())
if(item->parentItem()->isSelected()) {
item->setSelected(false);
myMoveItems.removeOne(item);
}
}
// speichere Referenzpunkt
myDx=point.rx();
myDy=point.ry();
}
}
break;
}
case InsertLine:
if (insertedPathItem == 0){
insertedPathItem = new DiagramPathItem(myArrow,myItemMenu);
insertedPathItem->setPen(myLineColor);
insertedPathItem->setBrush(myLineColor);
insertedPathItem->setZValue(maxZ);
maxZ+=0.1;
addItem(insertedPathItem);
insertedPathItem->setPos(onGrid(mouseEvent->scenePos()));
//insertedPathItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
}
insertedPathItem->append(onGrid(mouseEvent->scenePos()));
break;
//! [7] //! [8]
case InsertText:
emit editorHasReceivedFocus();
textItem = new DiagramTextItem();
textItem->setFont(myFont);
textItem->setTextInteractionFlags(Qt::TextEditorInteraction);
textItem->setZValue(maxZ);
maxZ+=0.1;
connect(textItem, SIGNAL(lostFocus(DiagramTextItem *)),
this, SLOT(editorLostFocus(DiagramTextItem *)));
connect(textItem, SIGNAL(receivedFocus(DiagramTextItem *)),
this, SLOT(editorReceivedFocus(DiagramTextItem *)));
connect(textItem, SIGNAL(selectedChange(QGraphicsItem *)),
this, SIGNAL(itemSelected(QGraphicsItem *)));
addItem(textItem);
textItem->setDefaultTextColor(myTextColor);
textItem->setFocus();
textItem->setCenterPoint(onGrid(mouseEvent->scenePos()));
textItem->activateEditor();
emit textInserted(textItem);
mouseEvent->setAccepted(true);
break;
//! [8] //! [9]
case CopyItem:
if (!selectedItems().empty()){
copiedItems=new QList<QGraphicsItem*>;
copiedItems->clear();
// l<>sche doppelte Verweise (Child&selected)
QList<QGraphicsItem*> myList=selectedItems();
foreach(QGraphicsItem* item,myList){
if(item->parentItem())
if(item->parentItem()->isSelected()) {
item->setSelected(false);
myList.removeOne(item);
}
}
// Vorbereitung copy
QGraphicsItem *insItem;
insItem=myList.first();
QPointF point=onGrid(mouseEvent->scenePos());
myDx=insItem->pos().rx()-point.rx();
myDy=insItem->pos().ry()-point.ry();
// copy
foreach(QGraphicsItem* item,myList){
insItem=copy(item);
addItem(insItem);
insItem->setPos(item->pos());
copiedItems->append(item);
item->setZValue(maxZ);
maxZ+=0.1;
//check for children
if(item->childItems().count()>0){
foreach(QGraphicsItem* item_l1,item->childItems()){
QGraphicsItem* addedItem=copy(item_l1);
addItem(addedItem);
addedItem->setParentItem(insItem);
addedItem->setPos(item_l1->pos());
}
}
//move original to knew position
item->setSelected(true);
#ifdef DEBUG
std::cout<< item->pos().rx()<< ","<<item->pos().ry() << std::endl;
#endif
}
myMode=CopyingItem;
}
break;
case CopyingItem:
if (copiedItems->count() > 0){
insertedItem=static_cast<DiagramItem*>(copiedItems->first());
QPointF point=onGrid(mouseEvent->scenePos());
qreal dx=insertedItem->pos().rx()-point.rx()-myDx;
qreal dy=insertedItem->pos().ry()-point.ry()-myDy;
foreach(QGraphicsItem* item,*copiedItems){
if(item->parentItem()!=0){
if(!item->parentItem()->isSelected()) item->moveBy(-dx,-dy);
}
else {
item->moveBy(-dx,-dy);
}
}
clearSelection();
insertedItem=0;
myDx=0.0;
myDy=0.0;
myMode=MoveItem;
}
break;
default:
;
}
if(!mouseEvent->isAccepted()) QGraphicsScene::mousePressEvent(mouseEvent);
}
//! [9]
//! [10]
void DiagramScene::mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent)
{
// move cursor
myCursor.setPos(onGrid(mouseEvent->scenePos()));
// preview der Zeichnung
switch (myMode){
case InsertLine:
if (insertedPathItem != 0) {
insertedPathItem->updateLast(onGrid(mouseEvent->scenePos()));
}
break;
case MoveItem:
QGraphicsScene::mouseMoveEvent(mouseEvent);
checkOnGrid();
break;
case MoveItems:
{
QPointF point=onGrid(mouseEvent->scenePos());
qreal dx=point.rx()-myDx;
qreal dy=point.ry()-myDy;
foreach(QGraphicsItem* item,myMoveItems){
if(item->parentItem()!=0){
if(!item->parentItem()->isSelected()) item->moveBy(dx,dy);
}
else {
item->moveBy(dx,dy);
}
}
myDx=point.rx();
myDy=point.ry();
break;
}
case InsertItem:
if (insertedItem == 0){
insertedItem = new DiagramItem(myItemType, myItemMenu);
insertedItem->setBrush(myItemColor);
insertedItem->setPen(myLineColor);
insertedItem->setSelected(true);
insertedItem->setZValue(maxZ);
maxZ+=0.1;
addItem(insertedItem);
}
insertedItem->setPos(onGrid(mouseEvent->scenePos()));
break;
case InsertDrawItem:
if (insertedDrawItem != 0){
insertedDrawItem->setPos2(onGrid(mouseEvent->scenePos()));
}
break;
case CopyingItem:
if (copiedItems->count() > 0){
//copiedItems->setPos(onGrid(mouseEvent->scenePos()));
insertedItem=static_cast<DiagramItem*>(copiedItems->first());
QPointF point=onGrid(mouseEvent->scenePos());
qreal dx=insertedItem->pos().rx()-point.rx()-myDx;
qreal dy=insertedItem->pos().ry()-point.ry()-myDy;
foreach(QGraphicsItem* item,*copiedItems){
if(item->parentItem()!=0){
if(!item->parentItem()->isSelected()) item->moveBy(-dx,-dy);
}
else {
item->moveBy(-dx,-dy);
}
}
}
break;
default:
;
}
}
//! [10]
//! [11]
void DiagramScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent)
{
if (myMode == Zoom) {
emit zoomRect(mouseEvent->scenePos(),mouseEvent->lastScenePos());
return;
}
//! [12] //! [13]
line = 0;
QGraphicsScene::mouseReleaseEvent(mouseEvent);
}
//! [13]
void DiagramScene::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *mouseEvent)
{
#ifdef DEBUG
std::cout << "d click" << myMode << std::endl;
#endif
switch (myMode){
case InsertLine:
//insertedPathItem->updateLast(onGrid(mouseEvent->scenePos()));
insertedPathItem->remove();
insertedPathItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
insertedPathItem->setEnabled(false);
insertedPathItem=0;
break;
default:
if(!selectedItems().isEmpty()){
QGraphicsItem *item = selectedItems().first();//itemAt(mouseEvent->scenePos());
if(item){
QList<QGraphicsItem *> children = item->childItems();
if (children.count()>0){
if (QGraphicsTextItem *child = (QGraphicsTextItem*) item->childItems().first()) {
#ifdef DEBUG
std::cout << "edit:" << child->toPlainText().toStdString() << std::endl;
#endif
if (child->textInteractionFlags() == Qt::NoTextInteraction)
child->setTextInteractionFlags(Qt::TextEditorInteraction);
emit editorHasReceivedFocus();
child->setFocus();
}
}
else {
if(item->type()!=DiagramTextItem::Type){
// added
// text wird per Doppelclick eingefuegt
textItem = new DiagramTextItem();
textItem->setFont(myFont);
textItem->setTextInteractionFlags(Qt::TextEditorInteraction);
textItem->setZValue(1000.0);
connect(textItem, SIGNAL(lostFocus(DiagramTextItem *)),
this, SLOT(editorLostFocus(DiagramTextItem *)));
connect(textItem, SIGNAL(receivedFocus(DiagramTextItem *)),
this, SLOT(editorReceivedFocus(DiagramTextItem *)));
connect(textItem, SIGNAL(selectedChange(QGraphicsItem *)),
this, SIGNAL(itemSelected(QGraphicsItem *)));
addItem(textItem);
textItem->setParentItem(item);
textItem->setDefaultTextColor(myTextColor);
QPointF mPos=QPointF(0,0);
// mPos adaptieren je nach DiaType ...
switch (item->type()) {
case DiagramDrawItem::Type:
mPos+=dynamic_cast<DiagramDrawItem*>(item)->getDimension()/2;
break;
default:
break;
}
//textItem->setPos(mPos);
textItem->setCenterPoint(mPos);
emit editorHasReceivedFocus();
emit textInserted(textItem);
textItem->setFocus(Qt::OtherFocusReason);
}
else
QGraphicsScene::mouseDoubleClickEvent(mouseEvent);
}
}
}
}
}
void DiagramScene::wheelEvent(QGraphicsSceneWheelEvent *mouseEvent)
{
if(mouseEvent->modifiers()==Qt::ControlModifier){
int i = mouseEvent->delta();
qreal factor;
if(i>=0){
factor = i/100.0;
}
else {
factor = -100.0/i; // negative Richtung ...
}
emit zoom(factor);
mouseEvent->setAccepted(true);
return;
}
QGraphicsScene::wheelEvent(mouseEvent);
}
//! [14]
void setArrow(const int i)
{
}
bool DiagramScene::isItemChange(int type)
{
foreach (QGraphicsItem *item, selectedItems()) {
if (item->type() == type)
return true;
}
return false;
}
//! [14]
void DiagramScene::checkOnGrid()
{
foreach (QGraphicsItem *item, selectedItems()) {
if(item->type()==DiagramTextItem::Type){
// not item position but center position needs to be on grid
QPointF centerPoint=dynamic_cast<DiagramTextItem*>(item)->centerPoint();
std::cout << "rec:" << centerPoint.x() << "/" << centerPoint.y() << std::endl;
qreal x = qRound(centerPoint.x()/10)*10.0;
qreal y = qRound(centerPoint.y()/10)*10.0;
dynamic_cast<DiagramTextItem*>(item)->setCenterPoint(QPointF(x,y));
}
else
{
qreal x = qRound(item->x()/10)*10.0;
qreal y = qRound(item->y()/10)*10.0;
item->setPos(x,y);
}
}
}
QPointF DiagramScene::onGrid(QPointF pos)
{
qreal x = qRound(pos.x()/myGrid)*myGrid;
qreal y = qRound(pos.y()/myGrid)*myGrid;
QPointF result = QPointF(x,y);
return result;
}
void DiagramScene::abort(bool keepSelection)
{
switch(myMode){
case CopyingItem:
//removeItem(copiedItems);
//destroyItemGroup(copiedItems);
//removeItem(insertedItem);
break;
case InsertItem:
removeItem(insertedItem);
break;
case InsertDrawItem:
removeItem(insertedDrawItem);
break;
case InsertLine:
removeItem(insertedPathItem);
break;
default:
;
}
insertedItem=0;
insertedDrawItem=0;
copiedItems=0;
myMode=MoveItem;
if(!keepSelection) clearSelection();
}
QGraphicsItem* DiagramScene::copy(QGraphicsItem* item)
{
#ifdef DEBUG
std::cout<<"copy: " << item->type()<<std::endl;
#endif
switch(item->type()){
case QGraphicsItem::UserType+3:
return qgraphicsitem_cast<QGraphicsItem*>(qgraphicsitem_cast<DiagramTextItem*>(item)->copy());
break;
case QGraphicsItem::UserType+6:
return qgraphicsitem_cast<QGraphicsItem*>(qgraphicsitem_cast<DiagramPathItem*>(item)->copy());
break;
default:
{
DiagramItem* newItem=dynamic_cast<DiagramItem*>(item)->copy();
return dynamic_cast<QGraphicsItem*>(newItem);
}
break;
}
}
void DiagramScene::setArrow(const int i)
{
myArrow=DiagramPathItem::DiagramType(i);
if(insertedPathItem!=0){
insertedPathItem->setDiagramType(myArrow);
}
if (!selectedItems().empty()){
foreach(QGraphicsItem* item,selectedItems()){
switch(item->type()){
case QGraphicsItem::UserType+3:
// Textitem does not possess Linecolor !
break;
case QGraphicsItem::UserType+6:
qgraphicsitem_cast<DiagramPathItem*>(item)->setDiagramType(myArrow);
break;
default:
// nothing to do
break;
}
}
}
}
bool DiagramScene::event(QEvent *mEvent)
{
if (mEvent->type()==QEvent::Enter) {
myCursor.setVisible(true);
return true;
}
if (mEvent->type()==QEvent::Leave) {
myCursor.setVisible(false);
return true;
}
return QGraphicsScene::event(mEvent);
}
bool DiagramScene::save(QFile *file)
{
#ifdef DEBUG
std::cout << "save..." << std::endl;
#endif
QXmlStreamWriter xmlWriter(file);
xmlWriter.setAutoFormatting(true);
xmlWriter.writeStartDocument();
xmlWriter.writeComment("File for QDiagram");
xmlWriter.writeStartElement("doc");
foreach(QGraphicsItem* item, items()){
if(item->type()>QGraphicsItem::UserType){
xmlWriter.writeStartElement("Item");
xmlWriter.writeAttribute("Type",QString::number(item->type()));
xmlWriter.writeEmptyElement("Pos");
xmlWriter.writeAttribute("x",QString::number(item->pos().x()));
xmlWriter.writeAttribute("y",QString::number(item->pos().y()));
xmlWriter.writeAttribute("z",QString::number(item->zValue()));
switch (item->type()) {
case QGraphicsItem::UserType+16:
{
DiagramDrawItem *mItem = dynamic_cast<DiagramDrawItem *>(item);
//xmlWriter.writeComment("DiagramDrawItem");
xmlWriter.writeEmptyElement("DiagramType");
xmlWriter.writeAttribute("type",QString::number(mItem->diagramType()));
xmlWriter.writeEmptyElement("Dimensions");
xmlWriter.writeAttribute("width",QString::number(mItem->getDimension().x()));
xmlWriter.writeAttribute("height",QString::number(mItem->getDimension().y()));
xmlWriter.writeEmptyElement("Pen");
xmlWriter.writeAttribute("color",mItem->pen().color().name());
xmlWriter.writeAttribute("alpha",QString::number(mItem->pen().color().alpha()));
xmlWriter.writeEmptyElement("Brush");
xmlWriter.writeAttribute("color",mItem->brush().color().name());
xmlWriter.writeAttribute("alpha",QString::number(mItem->brush().color().alpha()));
}
break;
case QGraphicsItem::UserType+15:
{
DiagramItem *mItem = dynamic_cast<DiagramItem *>(item);
//xmlWriter.writeComment("DiagramItem");
xmlWriter.writeEmptyElement("DiagramType");
xmlWriter.writeAttribute("type",QString::number(mItem->diagramType()));
xmlWriter.writeEmptyElement("Pen");
xmlWriter.writeAttribute("color",mItem->pen().color().name());
xmlWriter.writeAttribute("alpha",QString::number(mItem->pen().color().alpha()));
xmlWriter.writeEmptyElement("Brush");
xmlWriter.writeAttribute("color",mItem->brush().color().name());
xmlWriter.writeAttribute("alpha",QString::number(mItem->brush().color().alpha()));
}
break;
case QGraphicsItem::UserType+3:
{
DiagramTextItem *mItem = dynamic_cast<DiagramTextItem *>(item);
//xmlWriter.writeComment("DiagramTextItem");
xmlWriter.writeEmptyElement("DiagramType");
xmlWriter.writeAttribute("type","0");
xmlWriter.writeStartElement("Text");
xmlWriter.writeCharacters(mItem->toHtml());
xmlWriter.writeEndElement();
}
break;
case QGraphicsItem::UserType+6:
{
DiagramPathItem *mItem = dynamic_cast<DiagramPathItem *>(item);
//xmlWriter.writeComment("DiagramPathItem");
xmlWriter.writeEmptyElement("DiagramType");
xmlWriter.writeAttribute("type",QString::number(mItem->diagramType()));
xmlWriter.writeEmptyElement("Pen");
xmlWriter.writeAttribute("color",mItem->pen().color().name());
xmlWriter.writeAttribute("alpha",QString::number(mItem->pen().color().alpha()));
xmlWriter.writeEmptyElement("Brush");
xmlWriter.writeAttribute("color",mItem->brush().color().name());
xmlWriter.writeAttribute("alpha",QString::number(mItem->brush().color().alpha()));
foreach(QPointF point, mItem->getPoints()){
xmlWriter.writeEmptyElement("Point");
xmlWriter.writeAttribute("x",QString::number(point.x()));
xmlWriter.writeAttribute("y",QString::number(point.y()));
}
}
break;
default:
break;
}
xmlWriter.writeEmptyElement("Transform");
xmlWriter.writeAttribute("m11",QString::number(item->transform().m11()));
xmlWriter.writeAttribute("m12",QString::number(item->transform().m12()));
xmlWriter.writeAttribute("m21",QString::number(item->transform().m21()));
xmlWriter.writeAttribute("m22",QString::number(item->transform().m22()));
xmlWriter.writeAttribute("dx",QString::number(item->transform().dx()));
xmlWriter.writeAttribute("dy",QString::number(item->transform().dy()));
xmlWriter.writeEndElement();
}
}
xmlWriter.writeEndElement();
xmlWriter.writeEndDocument();
return true;
}
bool DiagramScene::load(QFile *file)
{
#ifdef DEBUG
std::cout << "Load..." << std::endl;
#endif
QXmlStreamReader xmlReader(file);
int DiaType = 0;
QPointF mPos;
qreal z;
int type;
insertedItem=0;
insertedPathItem=0;
insertedDrawItem=0;
textItem=0;
while(!xmlReader.atEnd()){
xmlReader.readNext();
#ifdef DEBUG
std::cout << "name: " << DiaType << ":" << qPrintable(xmlReader.name().toString()) << std::endl;
#endif
if(xmlReader.isStartDocument()) continue;
if(xmlReader.isStartElement()){
if(xmlReader.name()=="doc") continue;
if(!DiaType and (xmlReader.name()=="Item")){
bool ok;
DiaType = xmlReader.attributes().value("Type").toString().toInt(&ok);
if(!ok)
{
xmlReader.raiseError(tr("Item: type number conversion failed"));
}
continue;
}
if(DiaType and (xmlReader.name()=="Pos")){
bool ok,okay;
okay=true;
mPos.setX(xmlReader.attributes().value("x").toString().toDouble(&ok));
okay&=ok;
mPos.setY(xmlReader.attributes().value("y").toString().toDouble(&ok));
okay&=ok;
z=xmlReader.attributes().value("z").toString().toDouble(&ok);
okay&=ok;
if(!okay)
{
xmlReader.raiseError(tr("Pos: number conversion failed"));
}
continue;
}
if(DiaType and (xmlReader.name()=="DiagramType")){
bool ok;
type = xmlReader.attributes().value("type").toString().toInt(&ok);
if(!ok)
{
xmlReader.raiseError(tr("DiagramType: type number conversion failed"));
continue;
}
switch (DiaType) {
case QGraphicsItem::UserType+15:
insertedItem = new DiagramItem(DiagramItem::DiagramType(type),myItemMenu);
addItem(insertedItem);
#ifdef DEBUG
std::cout << "DiagramItem" << std::endl;
#endif
insertedItem->setPos(mPos);
insertedItem->setZValue(z);
break;
case QGraphicsItem::UserType+16:
insertedDrawItem = new DiagramDrawItem(DiagramDrawItem::DiagramType(type),myItemMenu);
addItem(insertedDrawItem);
#ifdef DEBUG
std::cout << "DiagramDrawItem" << std::endl;
#endif
insertedDrawItem->setPos(mPos);
insertedDrawItem->setZValue(z);
break;
case QGraphicsItem::UserType+6:
insertedPathItem = new DiagramPathItem(DiagramPathItem::DiagramType(type),myItemMenu);
addItem(insertedPathItem);
#ifdef DEBUG
std::cout << "DiagramPathItem" << std::endl;
#endif
insertedPathItem->setPos(mPos);
insertedPathItem->setZValue(z);
insertedPathItem->setFlag(QGraphicsItem::ItemIsMovable, true);
insertedPathItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
break;
case QGraphicsItem::UserType+3:
textItem = new DiagramTextItem();
textItem->setTextInteractionFlags(Qt::TextEditorInteraction);
textItem->setZValue(z);
connect(textItem, SIGNAL(lostFocus(DiagramTextItem *)),
this, SLOT(editorLostFocus(DiagramTextItem *)));
connect(textItem, SIGNAL(receivedFocus(DiagramTextItem *)),
this, SLOT(editorReceivedFocus(DiagramTextItem *)));
connect(textItem, SIGNAL(selectedChange(QGraphicsItem *)),
this, SIGNAL(itemSelected(QGraphicsItem *)));
addItem(textItem);
textItem->setPos(mPos);
break;
default:
break;
}
continue;
}
//DiamgramType nicht gesetzt ? -> Fehler
if(DiaType and !(insertedItem or insertedDrawItem or textItem or insertedPathItem)){
xmlReader.raiseError(tr("DiagramType definition missing"));
continue;
}
// weitere Properties setzen (Farbe,Punkte,etc.)
if(DiaType and (xmlReader.name()=="Pen")){
QColor color;
color.setNamedColor(xmlReader.attributes().value("color").toString());
if(!color.isValid()){
xmlReader.raiseError(tr("DiagramType: type number conversion failed"));
continue;
}
bool ok;
color.setAlpha(xmlReader.attributes().value("alpha").toString().toUInt(&ok));
if(!ok)
{
xmlReader.raiseError(tr("DiagramType: type number conversion failed"));
continue;
}
switch (DiaType) {
case QGraphicsItem::UserType+15:
insertedItem->setPen(color);
break;
case QGraphicsItem::UserType+16:
insertedDrawItem->setPen(color);
break;
case QGraphicsItem::UserType+6:
insertedPathItem->setPen(color);
break;
default:
break;
}
continue;
}
if(DiaType and (xmlReader.name()=="Brush")){
QColor color;
bool ok;
QString colorName = xmlReader.attributes().value("color").toString();
color.setNamedColor(colorName);
if(!color.isValid()){
xmlReader.raiseError(tr("DiagramType: type number conversion failed"));
continue;
}
color.setAlpha(xmlReader.attributes().value("alpha").toString().toUInt(&ok));
if(!ok)
{
xmlReader.raiseError(tr("DiagramType: type number conversion failed"));
continue;
}
switch (DiaType) {
case QGraphicsItem::UserType+15:
insertedItem->setBrush(color);
break;
case QGraphicsItem::UserType+16:
insertedDrawItem->setBrush(color);
break;
case QGraphicsItem::UserType+6:
insertedPathItem->setBrush(color);
break;
default:
break;
}
continue;
}
if(DiaType and (xmlReader.name()=="Dimensions")){
QPointF mPos2;
bool okay,ok;
okay=true;
mPos2.setX(xmlReader.attributes().value("width").toString().toDouble(&ok));
okay&=ok;
mPos2.setY(xmlReader.attributes().value("height").toString().toDouble(&ok));
okay&=ok;
if(!ok)
{
xmlReader.raiseError(tr("Dimensions: number conversion failed"));
continue;
}
switch (DiaType) {
case QGraphicsItem::UserType+16:
insertedDrawItem->setDimension(mPos2);
break;
default:
break;
}
continue;
}
if(DiaType and (xmlReader.name()=="Point")){
QPointF mPos2;
bool okay,ok;
okay=true;
mPos2.setX(xmlReader.attributes().value("x").toString().toDouble(&ok));
okay&=ok;
mPos2.setY(xmlReader.attributes().value("y").toString().toDouble(&ok));
okay&=ok;
if(!ok)
{
xmlReader.raiseError(tr("Point: number conversion failed"));
continue;
}
switch (DiaType) {
case QGraphicsItem::UserType+6:
insertedPathItem->append(mPos2+insertedPathItem->pos());
break;
default:
break;
}
continue;
}
if(DiaType and (xmlReader.name()=="Text")){
QString mText;
mText = xmlReader.readElementText();
switch (DiaType) {
case QGraphicsItem::UserType+3:
textItem->setHtml(mText);
break;
default:
break;
}
continue;
}
if(DiaType and (xmlReader.name()=="Transform")){
bool ok,okay;
okay=true;
qreal m11=xmlReader.attributes().value("m11").toString().toDouble(&ok);
okay&=ok;
qreal m12=xmlReader.attributes().value("m12").toString().toDouble(&ok);
okay&=ok;
qreal m21=xmlReader.attributes().value("m21").toString().toDouble(&ok);
okay&=ok;
qreal m22=xmlReader.attributes().value("m22").toString().toDouble(&ok);
okay&=ok;
qreal dx=xmlReader.attributes().value("dx").toString().toDouble(&ok);
okay&=ok;
qreal dy=xmlReader.attributes().value("dx").toString().toDouble(&ok);
okay&=ok;
if(!ok)
{
xmlReader.raiseError(tr("Transform: number conversion failed"));
continue;
}
QTransform trans=QTransform(m11,m12,m21,m22,dx,dy);
switch (DiaType) {
case QGraphicsItem::UserType+15:
insertedItem->setTransform(trans);
break;
case QGraphicsItem::UserType+16:
insertedDrawItem->setTransform(trans);
break;
case QGraphicsItem::UserType+6:
insertedPathItem->setTransform(trans);
break;
case QGraphicsItem::UserType+3:
textItem->setTransform(trans);
break;
default:
break;
}
continue;
}
else {
xmlReader.raiseError(tr("unexpected start element"));
continue;
}
}
if(xmlReader.isEndElement()){
if(DiaType and (xmlReader.name()=="Item")){
DiaType = 0;
insertedItem = 0;
insertedDrawItem = 0;
insertedPathItem = 0;
textItem = 0;
}
}
}
if(xmlReader.hasError()){
std::cerr << "Error in XML Read-in: "
<< qPrintable(xmlReader.errorString())
<< std::endl
<< "Line: "
<< xmlReader.lineNumber()
<< std::endl;
}
// Aufr<66>umen
insertedItem = 0;
insertedDrawItem = 0;
insertedPathItem = 0;
textItem = 0;
myMode = MoveItem;
return true;
}
void DiagramScene::clear()
{
foreach(QGraphicsItem *item,items()){
if(item!=&myCursor)
{
removeItem(item);
delete item;
}
}
}
void DiagramScene::setCursorVisible(bool vis)
{
if(vis){
if(myCursor.scene()==0){
addItem(&myCursor);
}
}
else
{
if(myCursor.scene()) removeItem(&myCursor);
}
}
void DiagramScene::drawBackground(QPainter *p, const QRectF &r) {
p -> save();
// desactive tout antialiasing, sauf pour le texte
p -> setRenderHint(QPainter::Antialiasing, false);
p -> setRenderHint(QPainter::TextAntialiasing, true);
p -> setRenderHint(QPainter::SmoothPixmapTransform, false);
// dessine un fond blanc
p -> setPen(Qt::NoPen);
p -> setBrush(Qt::white);
p -> drawRect(r);
if (myGridVisible) {
// to ease transition from qelec
int xGrid=myGridScale * (int) myGrid;
int yGrid=myGridScale * (int) myGrid;
// dessine les points de la grille
p -> setPen(Qt::black);
p -> setBrush(Qt::NoBrush);
qreal limite_x = r.x() + r.width();
qreal limite_y = r.y() + r.height();
int g_x = (int)ceil(r.x());
while (g_x % xGrid) ++ g_x;
int g_y = (int)ceil(r.y());
while (g_y % yGrid) ++ g_y;
for (int gx = g_x ; gx < limite_x ; gx += xGrid) {
for (int gy = g_y ; gy < limite_y ; gy += yGrid) {
p -> drawPoint(gx, gy);
}
}
}
p -> restore();
}
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