QPropertyAnimation, partially works.

lincoln

Hi guys I have a query about QPropertyAnimation, I have a form with a QTableView where I show data, and then below in a GroupBox some controls, which together are the details, I made an animation to show that GroupBox, when I clicked on a button , it is shown and hidden well, but when you continue clicking it no longer shows anything, any suggestion would be appreciated, greetings.
I leave my code.

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QSqlDatabase>
#include <QSqlTableModel>

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
  Q_OBJECT

public:
  MainWindow(QWidget *parent = nullptr);
  ~MainWindow();

private slots:
  void on_btnMostrar_clicked();

private:
  Ui::MainWindow *ui;
  QSqlDatabase mDb;
  QSqlTableModel *model;
  int _height=0;
  int endValue=0;
  bool showDetails=false;

};
#endif // MAINWINDOW_H

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QSqlError>
#include <QMessageBox>
#include <QtDebug>
#include <QPropertyAnimation>
#include <QDebug>

MainWindow::MainWindow(QWidget *parent)
  : QMainWindow(parent), ui(new Ui::MainWindow)
{
  ui->setupUi(this);
  qInfo()<<mDb.drivers();
  mDb=QSqlDatabase::addDatabase("QPSQL");
  if(!mDb.isDriverAvailable("QPSQL")){
      QMessageBox::critical(this,qApp->applicationName(),mDb.lastError().text());
      return;
    }
  mDb.setPort(5432);
  mDb.setHostName("localhost");
  mDb.setDatabaseName("covid");
  mDb.setUserName("postgres");
  mDb.setPassword("password");
  if(!mDb.open()){
      QMessageBox::critical(this,qApp->applicationName(), mDb.lastError().text());
      return;
    }
  model=new QSqlTableModel(this);
  model->setTable("datos");
  model->select();
  
  ui->tableView->setModel(model);
  ui->gbDatos->setVisible(false);
//  ui->btnMostrar->setCheckable(true);

}

MainWindow::~MainWindow()
{
  delete ui;
}
void MainWindow::on_btnMostrar_clicked()
{
  if(showDetails==true)
    _height=this->height();
  else
    _height=this->height()-ui->gbDatos->height();

  if(_height==293){
      endValue=this->height();
      showDetails=true;
      ui->gbDatos->setVisible(true);
    }else{
      endValue=293;
      showDetails=false;
      ui->gbDatos->setVisible(false);
    }

  QPropertyAnimation *animate=new QPropertyAnimation(this,"minimumHeight");
  animate->setDuration(1000);
  animate->setStartValue(_height);
  animate->setEndValue(endValue);
  animate->setEasingCurve(QEasingCurve::OutQuad);
  animate->start();
}

SGaist

You can use for example the size hint to get the estimated final size of your widget.

SGaist

Hi,

293 looks like a magic number that is going to get you in trouble.

You should not rely on that kind of value for your animations.

lincoln

@SGaist said in QPropertyAnimation, partially works.:

293 looks like a magic number that is going to get you in trouble.
You should not rely on that kind of value for your animations.

And then what should I use, would be the question.

SGaist

You can use for example the size hint to get the estimated final size of your widget.

lincoln

great, fix my little problem, thanks.