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commands.cpp
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commands.cpp
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#include "commands.h"
#include <QGraphicsScene>
#include "painttable.h"
AddCommand::AddCommand(PaintScene *scene,Figure* item, QPointF LastPoint,QTableWidget* table,QUndoCommand *parent)
: QUndoCommand(parent)
{
static int itemCount = 0;
myGraphicsScene = scene;
myDiagramItem = item;
scene->update();
++itemCount;
this->table= table;
WasModified= scene->Modified;
IsFirstTime=true;
Q_UNUSED(LastPoint)
}
AddCommand::~AddCommand()
{
if (!myDiagramItem->scene())
myDiagramItem->hide();
}
void AddCommand::undo()
{
myGraphicsScene->removeItem(myDiagramItem);
// remove figure from the vector
myGraphicsScene->ItemsVec->pop_back();
myGraphicsScene->SavedVec->pop_back();
myGraphicsScene->update();
PaintTable::UpdateTable(table, *myGraphicsScene->ItemsVec);
WillModify=myGraphicsScene->Modified;
myGraphicsScene->Modified=WasModified;
}
void AddCommand::redo()
{ myGraphicsScene->ItemsVec->push_back(myDiagramItem);
myGraphicsScene->SavedVec->push_back(myDiagramItem);
myGraphicsScene->addItem(myDiagramItem);
myDiagramItem->setPos(initialPosition);
myGraphicsScene->clearSelection();
myGraphicsScene->update();
PaintTable::UpdateTable(table, *myGraphicsScene->ItemsVec);
if(IsFirstTime){
myGraphicsScene->Modified=true;
IsFirstTime=false;
}
else{
myGraphicsScene->Modified=WillModify;
}
}
DeleteCommand::DeleteCommand(PaintScene *scene,Figure* item, QPointF LastPoint,QTableWidget* table,QUndoCommand *parent)
: QUndoCommand(parent)
{
static int itemCount = 0;
myGraphicsScene = scene;
myDiagramItem = item;
this->table= table;
scene->update();
++itemCount;
WasModified= scene->Modified;
IsFirstTime=true;
Q_UNUSED(LastPoint)
}
DeleteCommand::~DeleteCommand()
{
if (!myDiagramItem->scene())
myDiagramItem->hide();
}
void DeleteCommand::undo()
{
myGraphicsScene->ItemsVec->push_back(myDiagramItem);
myGraphicsScene->SavedVec->insert(ItemIndex, myDiagramItem);
myGraphicsScene->addItem(myDiagramItem);
myDiagramItem->setPos(initialPosition);
myGraphicsScene->clearSelection();
myGraphicsScene->update();
PaintTable::UpdateTable(table, *myGraphicsScene->ItemsVec);
WillModify=myGraphicsScene->Modified;
myGraphicsScene->Modified=WasModified;
}
void DeleteCommand::redo()
{
myGraphicsScene->removeItem(myDiagramItem);
// remove figure from the vector
myGraphicsScene->ItemsVec->remove(myGraphicsScene->ItemsVec->indexOf(myDiagramItem));
ItemIndex=myGraphicsScene->SavedVec->indexOf(myDiagramItem);
myGraphicsScene->SavedVec->remove(ItemIndex);
myGraphicsScene->update();
PaintTable::UpdateTable(table, *myGraphicsScene->ItemsVec);
if(IsFirstTime){
myGraphicsScene->Modified=true;
IsFirstTime=false;
}
else{
myGraphicsScene->Modified=WillModify;
}
}
void ButtonsCommand::clearScene(PaintScene *scene)
{
delete scene->ItemsVec;
delete scene->undoStack;
scene->clear();
scene->undoStack =new QUndoStack();
scene->ItemsVec = new QVector<Figure*>();
scene->SavedVec = new QVector<Figure*>();
}