I can't ZOOM THE ICONS can any body help me..!

[jthacker]

hi guys,
i want to zoom particular application icon but can't do can you help me in this..!
i can see the the icon but cant zoom it.
in the zoomTheItem() function i'm getting the x=0 and y=0.
can u help me..!

in the ui file i have put the graphicsView

/*graphicstest2.h*/
 
#ifndef GRAPHICSTEST2_H
#define GRAPHICSTEST2_H
 
#include <QMainWindow>
#include <QGraphicsScene>
#include <QGraphicsPixmapItem>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsItem>
 
namespace Ui {
    class GraphicsTest2;
}
 
class MyQGraphicsScene;
 
class GraphicsTest2 : public QMainWindow {
    Q_OBJECT
public:
    GraphicsTest2(QWidget *parent = 0);
    ~GraphicsTest2();
 
    void zoomTheItem(QGraphicsSceneMouseEvent *event);
    void makeItemNormal(QGraphicsSceneMouseEvent *event);
 
 
protected:
    void changeEvent(QEvent *e);
 
 
private:
    Ui::GraphicsTest2   *ui;
    MyQGraphicsScene      *myScene;
    QGraphicsPixmapItem *item1;
 
    QGraphicsItem       *currentItem;
    bool                isItemNotScaled;
 
 
 
};
 
class MyQGraphicsScene :public QGraphicsScene {
    Q_OBJECT
public:
    MyQGraphicsScene(GraphicsTest2 *parent);
protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
 
private:
    GraphicsTest2       *myParent;
 
 
};
 
#endif // GRAPHICSTEST2_H
 
/*graphicstest2.cpp*/
 
#include "graphicstest2.h"
#include "ui_graphicstest2.h"
 
GraphicsTest2::GraphicsTest2(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::GraphicsTest2)
{
    isItemNotScaled = true;
 
    myScene = new MyQGraphicsScene(this);
    myScene->setSceneRect(0,80,800,460);
    item1 = new QGraphicsPixmapItem;
    item1->setPixmap(QPixmap("./myimages/addressbook.png"));
 
 
    myScene->addItem(item1);
    item1->setPos(50,130);
 
    ui->setupUi(this);
    ui->graphicsView->setScene(myScene);
}
 
GraphicsTest2::~GraphicsTest2()
{
    delete ui;
}
 
void GraphicsTest2::changeEvent(QEvent *e)
{
    QMainWindow::changeEvent(e);
    switch (e->type()) {
    case QEvent::LanguageChange:
        ui->retranslateUi(this);
        break;
    default:
        break;
    }
}
 
void GraphicsTest2::zoomTheItem(QGraphicsSceneMouseEvent *event){
    printf("\n zoomIn x:%d,y=%d",event->pos().x(),event->pos().y());fflush(stdout);
    currentItem = ui->graphicsView->itemAt(event->pos().x(),event->pos().y());
 
    if(!currentItem){
        return;
    }
 
    if(isItemNotScaled){
        currentItem->setScale(1.25);
        currentItem->moveBy(-10,-10);
    }
    isItemNotScaled = false;
 
 
 
}
 
void GraphicsTest2::makeItemNormal(QGraphicsSceneMouseEvent *event){
    if(!isItemNotScaled){
        currentItem->setScale(1);
        currentItem->moveBy(10,10);
    }
    isItemNotScaled = true;
printf("\n zoomOut");fflush(stdout);
}
 
void MyQGraphicsScene::mousePressEvent(QGraphicsSceneMouseEvent *event){
    myParent->zoomTheItem(event);
}
 
void MyQGraphicsScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event){
 
   myParent->makeItemNormal(event);
 
}
 
 
MyQGraphicsScene::MyQGraphicsScene(GraphicsTest2 *parent){
    myParent = parent;
 
}
 
 
/*main.cpp*/
 
#include <QtGui/QApplication>
#include "graphicstest2.h"
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    GraphicsTest2 w;
    w.show();
    return a.exec();
}

/*graphicstest2.h*/

#ifndef GRAPHICSTEST2_H
#define GRAPHICSTEST2_H

#include <QMainWindow>
#include <QGraphicsScene>
#include <QGraphicsPixmapItem>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsItem>

namespace Ui {
    class GraphicsTest2;
}

class MyQGraphicsScene;

class GraphicsTest2 : public QMainWindow {
    Q_OBJECT
public:
    GraphicsTest2(QWidget *parent = 0);
    ~GraphicsTest2();

    void zoomTheItem(QGraphicsSceneMouseEvent *event);
    void makeItemNormal(QGraphicsSceneMouseEvent *event);


protected:
    void changeEvent(QEvent *e);


private:
    Ui::GraphicsTest2   *ui;
    MyQGraphicsScene      *myScene;
    QGraphicsPixmapItem *item1;

    QGraphicsItem       *currentItem;
    bool                isItemNotScaled;



};

class MyQGraphicsScene :public QGraphicsScene {
    Q_OBJECT
public:
    MyQGraphicsScene(GraphicsTest2 *parent);
protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);

private:
    GraphicsTest2       *myParent;


};

#endif // GRAPHICSTEST2_H

/*graphicstest2.cpp*/

#include "graphicstest2.h"
#include "ui_graphicstest2.h"

GraphicsTest2::GraphicsTest2(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::GraphicsTest2)
{
    isItemNotScaled = true;

    myScene = new MyQGraphicsScene(this);
    myScene->setSceneRect(0,80,800,460);
    item1 = new QGraphicsPixmapItem;
    item1->setPixmap(QPixmap("./myimages/addressbook.png"));


    myScene->addItem(item1);
    item1->setPos(50,130);

    ui->setupUi(this);
    ui->graphicsView->setScene(myScene);
}

GraphicsTest2::~GraphicsTest2()
{
    delete ui;
}

void GraphicsTest2::changeEvent(QEvent *e)
{
    QMainWindow::changeEvent(e);
    switch (e->type()) {
    case QEvent::LanguageChange:
        ui->retranslateUi(this);
        break;
    default:
        break;
    }
}

void GraphicsTest2::zoomTheItem(QGraphicsSceneMouseEvent *event){
    printf("\n zoomIn x:%d,y=%d",event->pos().x(),event->pos().y());fflush(stdout);
    currentItem = ui->graphicsView->itemAt(event->pos().x(),event->pos().y());

    if(!currentItem){
        return;
    }

    if(isItemNotScaled){
        currentItem->setScale(1.25);
        currentItem->moveBy(-10,-10);
    }
    isItemNotScaled = false;



}

void GraphicsTest2::makeItemNormal(QGraphicsSceneMouseEvent *event){
    if(!isItemNotScaled){
        currentItem->setScale(1);
        currentItem->moveBy(10,10);
    }
    isItemNotScaled = true;
printf("\n zoomOut");fflush(stdout);
}

void MyQGraphicsScene::mousePressEvent(QGraphicsSceneMouseEvent *event){
    myParent->zoomTheItem(event);
}

void MyQGraphicsScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event){

   myParent->makeItemNormal(event);

}


MyQGraphicsScene::MyQGraphicsScene(GraphicsTest2 *parent){
    myParent = parent;

}


/*main.cpp*/

#include <QtGui/QApplication>
#include "graphicstest2.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    GraphicsTest2 w;
    w.show();
    return a.exec();
}

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note: Qt 4.6.2
Qt Creator 1.3.1



please help