Split picture of QLabel subclass in squares.

deleted396

Hello! I have a subclass of QLabel that i implemented to use the MouseEvents. Now, i am showing a picture in that label but i need to split the pictures in how much squares users wants. After that, i will need to write in the square a number. For example, if i click in one of that squares, in the first click i will write '1' in that square, with the second click, i will write '2' in that square..

But i don' know how i can do that, i put my code here! thanks!

file.cpp

#include "interfazmatrizexperto.h"
#include "ui_interfazmatrizexperto.h"
using namespace std;

interfazMatrizExperto::interfazMatrizExperto(const QString rutaImagenFondo, QWidget *parent) :
    QWidget(parent),
    ui(new Ui::interfazMatrizExperto)
{
    ui->setupUi(this);

    //Imagen de fondo
    QPixmap bkgnd("../InterfazKinect/img/foto_index_sinTXT.png");
    bkgnd = bkgnd.scaled(this->size(), Qt::IgnoreAspectRatio);
    QPalette palette;
    palette.setBrush(QPalette::Background, bkgnd);
    this->setPalette(palette);

    labelImage = new subQLabel(0);
    labelImage->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
    QPixmap pix(rutaImagenFondo);
    int w = ui->labelImage->width();
    int h = ui->labelImage->height();
    ui->labelImage->setPixmap(pix.scaled(w,h,Qt::KeepAspectRatio));

}

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

void interfazMatrizExperto::mousePressEvent(QMouseEvent *event)
{

    QWidget::mousePressEvent(event);

}

void interfazMatrizExperto::resizeEvent(QResizeEvent *evt)
{
    QPixmap bkgnd("../InterfazKinect/img/foto_index_sinTXT.png");//Load pic
    bkgnd = bkgnd.scaled(size(), Qt::IgnoreAspectRatio);//set scale of pic to match the window
    QPalette p = palette(); //copy current, not create new
    p.setBrush(QPalette::Background, bkgnd);//set the pic to the background
    setPalette(p);//show the background pic

    QWidget::resizeEvent(evt); //call base implementation
}

void subQLabel::mousePressEvent(QMouseEvent *event)
{


    cout << "Ha pulsado" << endl;
    int x = event->x();
    int y = event->y();

    cout << "punto x: " << x << " punto y: " << y << endl;

}

subQLabel::subQLabel(QWidget* parent) : QLabel(parent)
{

}

subQLabel::~subQLabel()
{


}

file .h

/#ifndef INTERFAZMATRIZEXPERTO_H
#define INTERFAZMATRIZEXPERTO_H

#include <QWidget>
#include <QMouseEvent>
#include <QImage>
#include <QLabel>
#include <QScrollArea>
#include <iostream>
#include <QPixmap>
#include <QVBoxLayout>

class subQLabel;

namespace Ui {
class interfazMatrizExperto;
}

class interfazMatrizExperto : public QWidget
{
    Q_OBJECT

public:
    explicit interfazMatrizExperto(const QString rutaImagenFondo,QWidget *parent = 0);
    ~interfazMatrizExperto();
protected:
    void mousePressEvent(QMouseEvent *event) override;
    void resizeEvent(QResizeEvent *evt);
private:
    Ui::interfazMatrizExperto *ui;
    subQLabel *labelImage;
};

class subQLabel : public QLabel
{
    Q_OBJECT

public:
    subQLabel(QWidget* parent);
    ~subQLabel();
    void mousePressEvent(QMouseEvent *event) override;
};

#endif // INTERFAZMATRIZEXPERTO_H

KillerSmath

@AdrianCruz

Maybe you can reimplement the paintEvent of SubLabel and get the pixelmap of label (if exists) to create cutted pixmaps using copy function of QPixmap class.
Increment a integer variable for each time someone clicked in the label and calculate how many cuts are necessary and draw a text of the number of this cutted pixmap.
Finally, you can redraw the image of background using these cutted pixmaps with orderned numbers to draw the new background pixmap.

http://doc.qt.io/qt-5/qpixmap.html#copy

VRonin

QLabel really isn't the right tool for the job. Feels like you want the Graphics View Framework

deleted396

@VRonin How can i do that? Because i have never used QGraphicWiew and seem hard to do :S