QScrollArea and Splitter

leinad

OK, I stream down the application to show my issue. As you mentioned, I managed to get the splitter but it doesn't move.

Click on the "Enabled Advance Filtering" button.

Now you will see a large scroll area. This should be much smaller.

Click on the "Add Row" button.

New rows are added to the scroll area but there is no scroll bar. If you go to the splitter right underneath the scroll area it does not move in any direction. I'd like the scroll area to have enough room for may be two rows and as I add rows, the scroll bar appears. The splitter should allow me to expand the scroll area to any size I need to display more or less rows. If I expand far enough the scroll bars should disappear. Standard for GUI apps.

If you remove the splitter, you will see that the scroll area works properly as I add rows but now no splitter to resize the scroll.

Thanks for your help.

mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QSplitter>
#include <QComboBox>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = NULL);
~MainWindow();

private:
void setupPanelToLookPretty();

private slots:

void on_enableAdvanceFilteringPushButton_clicked();

void on_advanceFilterClearPushButton_clicked();

void on_advanceFilterAddRowPushButton_clicked();

void on_advanceFilterRemoveRowPushButton_clicked();

private:
Ui::MainWindow *ui;

//advance filter inputs
QList<QComboBox *> advanceFilteringComboboxObjectTypeList;
QList<QComboBox *> advanceFilteringComboboxAttributeList;
QList<QComboBox *> advanceFilteringComboboxMathList;
QList<QComboBox *> advanceFilteringComboboxMinValueList;
QList<QComboBox *> advanceFilteringComboboxMaxValueList;
QList<QComboBox *> advanceFilteringComboboxBooleanList;

QList<QLineEdit *> advanceFilteringObjectTypeLineEditList;
QList<QLineEdit *> advanceFilteringAttributeLineEditList;
QList<QLineEdit *> advanceFilteringMathLineEditList;
QList<QLineEdit *> advanceFilteringMinValueLineEditList;
QList<QLineEdit *> advanceFilteringMaxValueLineEditList;
QList<QLineEdit *> advanceFilteringBooleanLineEditList;

QList<QLineEdit *> advanceFilteringObjectTypeCompleterList;
QList<QCompleter *> advanceFilteringAttributeCompleterList;
QList<QCompleter *> advanceFilteringMathCompleterList;
QList<QCompleter *> advanceFilteringMinValueCompleterList;
QList<QCompleter *> advanceFilteringMaxValueCompleterList;
QList<QCompleter *> advanceFilteringBooleanCompleterList;
int advanceFilterCurrentRowNumber;
bool advanceFilteringEnabled;

};

#endif // MAINWINDOW_H

leinad

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#define ADVANCE_FILTER_ROW_NUMBER 10

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow),
advanceFilterCurrentRowNumber(0),
advanceFilteringEnabled(false)
{
ui->setupUi(this);

MainWindow::setupPanelToLookPretty();

}

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

//setupPanelToLookPretty is run only once when DataView comes up. It is NOT run when a new database is loaded.
void MainWindow::setupPanelToLookPretty()
{

//Advance Filtering
//Assign all the combo-boxes to QList so easy to handle in the future
advanceFilteringComboboxObjectTypeList << ui->advanceFilterObjectTypeComboBox0 << ui->advanceFilterObjectTypeComboBox1 << ui->advanceFilterObjectTypeComboBox2 <<
                             ui->advanceFilterObjectTypeComboBox3 << ui->advanceFilterObjectTypeComboBox4 << ui->advanceFilterObjectTypeComboBox5 <<
                             ui->advanceFilterObjectTypeComboBox6 << ui->advanceFilterObjectTypeComboBox7 << ui->advanceFilterObjectTypeComboBox8 <<
                             ui->advanceFilterObjectTypeComboBox9;

advanceFilteringComboboxAttributeList << ui->advanceFilterAttributeComboBox0 << ui->advanceFilterAttributeComboBox1 << ui->advanceFilterAttributeComboBox2 <<
                                ui->advanceFilterAttributeComboBox3 << ui->advanceFilterAttributeComboBox4 << ui->advanceFilterAttributeComboBox5 <<
                                ui->advanceFilterAttributeComboBox6 << ui->advanceFilterAttributeComboBox7 << ui->advanceFilterAttributeComboBox8 <<
                                ui->advanceFilterAttributeComboBox9;


advanceFilteringComboboxMathList << ui->advanceFilterMathComboBox0 << ui->advanceFilterMathComboBox1 << ui->advanceFilterMathComboBox2 <<
                           ui->advanceFilterMathComboBox3 << ui->advanceFilterMathComboBox4 << ui->advanceFilterMathComboBox5 <<
                           ui->advanceFilterMathComboBox6 << ui->advanceFilterMathComboBox7 << ui->advanceFilterMathComboBox8 <<
                           ui->advanceFilterMathComboBox9;


advanceFilteringComboboxMinValueList << ui->advanceFilterMinAtributeValueComboBox0 << ui->advanceFilterMinAtributeValueComboBox1 << ui->advanceFilterMinAtributeValueComboBox2 <<
                               ui->advanceFilterMinAtributeValueComboBox3 << ui->advanceFilterMinAtributeValueComboBox4 << ui->advanceFilterMinAtributeValueComboBox5 <<
                               ui->advanceFilterMinAtributeValueComboBox6 << ui->advanceFilterMinAtributeValueComboBox7 << ui->advanceFilterMinAtributeValueComboBox8 <<
                               ui->advanceFilterMinAtributeValueComboBox9;



advanceFilteringComboboxMaxValueList << ui->advanceFilterMaxAtributeValueComboBox0 << ui->advanceFilterMaxAtributeValueComboBox1 << ui->advanceFilterMaxAtributeValueComboBox2 <<
                               ui->advanceFilterMaxAtributeValueComboBox3 << ui->advanceFilterMaxAtributeValueComboBox4 << ui->advanceFilterMaxAtributeValueComboBox5 <<
                               ui->advanceFilterMaxAtributeValueComboBox6 << ui->advanceFilterMaxAtributeValueComboBox7 << ui->advanceFilterMaxAtributeValueComboBox8 <<
                               ui->advanceFilterMaxAtributeValueComboBox9;


//boolean has one less entry since the last query does not carry over to another query
advanceFilteringComboboxBooleanList << ui->advanceFilterBooleanComboBox0 << ui->advanceFilterBooleanComboBox1 << ui->advanceFilterBooleanComboBox2 <<
                              ui->advanceFilterBooleanComboBox3 << ui->advanceFilterBooleanComboBox4 << ui->advanceFilterBooleanComboBox5 <<
                              ui->advanceFilterBooleanComboBox6 << ui->advanceFilterBooleanComboBox7 << ui->advanceFilterBooleanComboBox8;

//Place tool tips and default lineEdit text but first create lineEdits for each of the combo boxes
for(int i = 0; i < ADVANCE_FILTER_ROW_NUMBER; i++)
{
    QLineEdit *tempLineEdit1 = new QLineEdit;
    advanceFilteringObjectTypeLineEditList << tempLineEdit1;

    //later  on we have assign the combo-boxes to a completer but since we dont have the actual list we do a temporary assignemnt to place text
    //object types
    advanceFilteringComboboxObjectTypeList[i]->setEditable(false);
    advanceFilteringComboboxObjectTypeList[i]->setLineEdit(advanceFilteringObjectTypeLineEditList[i]);
    advanceFilteringObjectTypeLineEditList[i]->setPlaceholderText("Select an Object Type");
    advanceFilteringComboboxObjectTypeList[i]->setToolTip("Shows all possible object types.  Users can can query on one more object types in the same query");
    advanceFilteringComboboxObjectTypeList[i]->setInsertPolicy(QComboBox::NoInsert);
    advanceFilteringComboboxObjectTypeList[i]->setCurrentIndex(-1);
    advanceFilteringComboboxObjectTypeList[i]->setVisible(false); //hide the combo-boxes as an initial condition

    //Attributes
    QLineEdit *tempLineEdit2 = new QLineEdit;
    advanceFilteringAttributeLineEditList << tempLineEdit2;

    advanceFilteringComboboxAttributeList[i]->setEditable(false);
    advanceFilteringComboboxAttributeList[i]->setLineEdit(advanceFilteringAttributeLineEditList[i]);
    advanceFilteringAttributeLineEditList[i]->setPlaceholderText("Select an Attribute (after selecting an Object Type");
    advanceFilteringComboboxAttributeList[i]->setToolTip("Shows all the attributes associated with a selected object type.");
    advanceFilteringComboboxAttributeList[i]->setInsertPolicy(QComboBox::NoInsert);
    advanceFilteringComboboxAttributeList[i]->setCurrentIndex(-1);
    advanceFilteringComboboxAttributeList[i]->setVisible(false); //hide the combo-boxes as an initial condition

    //Math input
    QLineEdit *tempLineEdit3 = new QLineEdit;
    advanceFilteringMathLineEditList << tempLineEdit3;

    advanceFilteringComboboxMathList[i]->setEditable(false);
    advanceFilteringComboboxMathList[i]->setLineEdit(advanceFilteringMathLineEditList[i]);
    advanceFilteringMathLineEditList[i]->setPlaceholderText("Comparison Selection");
    advanceFilteringComboboxMathList[i]->setInsertPolicy(QComboBox::NoInsert);
    advanceFilteringComboboxMathList[i]->addItem("=");
    advanceFilteringComboboxMathList[i]->addItem(">=");
    advanceFilteringComboboxMathList[i]->addItem("<");
    advanceFilteringComboboxMathList[i]->addItem("<=");
    advanceFilteringComboboxMathList[i]->addItem("!=");
    advanceFilteringComboboxMathList[i]->addItem("IN BETWEEN");
    advanceFilteringComboboxMathList[i]->addItem("CONTAINS");
    advanceFilteringComboboxMathList[i]->setToolTip("Select a comparison value. 'IN BETWEEN' requires a minimum and maximum entry.");
    advanceFilteringComboboxMathList[i]->setCurrentIndex(-1);  //must be at the end since we added
    advanceFilteringComboboxMathList[i]->setVisible(false); //hide the combo-boxes as an initial condition

    //min attribute values
    QLineEdit *tempLineEdit4 = new QLineEdit;
    advanceFilteringMinValueLineEditList << tempLineEdit4;

    advanceFilteringComboboxMinValueList[i]->setEditable(true);  //needs to be editable
    advanceFilteringComboboxMinValueList[i]->setLineEdit(advanceFilteringMinValueLineEditList[i]);
    advanceFilteringMinValueLineEditList[i]->setPlaceholderText("Select Minimum value");
    advanceFilteringComboboxMinValueList[i]->setToolTip("Select a value for the selected attribute.");
    advanceFilteringComboboxMinValueList[i]->setCurrentIndex(-1);
    advanceFilteringComboboxMinValueList[i]->setVisible(false); //hide the combo-boxes as an initial condition

    //max attribute values
    QLineEdit *tempLineEdit5 = new QLineEdit;
    advanceFilteringMaxValueLineEditList << tempLineEdit5;

    advanceFilteringComboboxMaxValueList[i]->setEditable(true); //needs to be editable
    advanceFilteringComboboxMaxValueList[i]->setLineEdit(advanceFilteringMaxValueLineEditList[i]);
    advanceFilteringMaxValueLineEditList[i]->setPlaceholderText("Select Maximum value");
    advanceFilteringComboboxMaxValueList[i]->setToolTip("Select a maximum value (Only valid when using the 'IN BETWEEN' selection under the comparison selections.");
    advanceFilteringComboboxMaxValueList[i]->setCurrentIndex(-1);
    advanceFilteringComboboxMaxValueList[i]->setVisible(false); //hide the combo-boxes as an initial condition

    //boolean selections (one less since last row has no boolean slection
    if(i < ADVANCE_FILTER_ROW_NUMBER - 1)
    {
        QLineEdit *tempLineEdit6 = new QLineEdit;
        advanceFilteringBooleanLineEditList << tempLineEdit6;

        advanceFilteringComboboxBooleanList[i]->setEditable(false);
        advanceFilteringComboboxBooleanList[i]->setLineEdit(advanceFilteringBooleanLineEditList[i]);
        advanceFilteringBooleanLineEditList[i]->setPlaceholderText("Select a boolean value");
        advanceFilteringBooleanLineEditList[i]->setToolTip("Select a boolean value (used for compound queries (AND/OR).  If not selected not a compund query.");
        advanceFilteringComboboxBooleanList[i]->addItem("");  //When there is no compund query
        advanceFilteringComboboxBooleanList[i]->addItem("AND");
        advanceFilteringComboboxBooleanList[i]->addItem("OR");
        advanceFilteringComboboxBooleanList[i]->setInsertPolicy(QComboBox::NoInsert);
        advanceFilteringComboboxBooleanList[i]->setCurrentIndex(-1);
        advanceFilteringComboboxBooleanList[i]->setVisible(false); //hide the combo-boxes as an initial condition
    }
}

//advance filter scroll area is removed from the display as an initial condition
ui->advanceFilterScrollArea->setVisible(false);
ui->advanceFilterClearPushButton->setVisible(false);
ui->advanceFilterAddRowPushButton->setVisible(false);
ui->advanceFilterRemoveRowPushButton->setVisible(false);

// QSplitter *splitter = new QSplitter(Qt::Vertical);
// ui->advanceFilterGridLayout->addWidget(splitter);
// ui->basicFilterLayout->addWidget(splitter); //remove splitter from include if not using

}

//turn on/off the advance filtering/basic filtering dialogue boxes
void MainWindow::on_enableAdvanceFilteringPushButton_clicked()
{
if(advanceFilteringEnabled == false)
{
advanceFilteringEnabled = true;
ui->advanceFilterScrollArea->setVisible(true); //advance filtering scroll area
ui->enableAdvanceFilteringPushButton->setText("Enable Basic Filtering");
ui->advanceFilterClearPushButton->setVisible(true);
ui->advanceFilterAddRowPushButton->setVisible(true);
ui->advanceFilterRemoveRowPushButton->setVisible(true);

    //basic filetring selections turned on
    ui->clearFilterpushButton->setVisible(false);
    ui->objectTypeComboBox->setVisible(false);
    ui->eventTypeComboBox->setVisible(false);
    ui->ipStringValueComboBox->setVisible(false);
    ui->minTimeOfReceiptComboBox->setVisible(false);
    ui->maxTimeOfReceiptComboBox->setVisible(false);

    //show the last set of advance filter selection boxes
    if(advanceFilterCurrentRowNumber == ADVANCE_FILTER_ROW_NUMBER)  //since we start with zero we want to make sure we don't over allocate
        advanceFilterCurrentRowNumber--;

    for(int i = 0; i <= advanceFilterCurrentRowNumber; i++)
    {
       advanceFilteringComboboxObjectTypeList[i]->setVisible(true);
       advanceFilteringComboboxAttributeList[i]->setVisible(true);
       advanceFilteringComboboxMathList[i]->setVisible(true);
       advanceFilteringComboboxMinValueList[i]->setVisible(true);
       advanceFilteringComboboxMaxValueList[i]->setVisible(true);
       if(i < ADVANCE_FILTER_ROW_NUMBER - 1)
            advanceFilteringComboboxBooleanList[i]->setVisible(true);
    }
}
else  //advance filetring turned off so using basic filtering is enabled
{
    advanceFilteringEnabled = false;
    ui->advanceFilterScrollArea->setVisible(false);
    ui->advanceFilterClearPushButton->setVisible(false);
    ui->advanceFilterAddRowPushButton->setVisible(false);
    ui->advanceFilterRemoveRowPushButton->setVisible(false);
    ui->enableAdvanceFilteringPushButton->setText("Enable Advance Filtering");
    //basic filetring selecections turned on
    ui->clearFilterpushButton->setVisible(true);
    ui->objectTypeComboBox->setVisible(true);
    ui->eventTypeComboBox->setVisible(true);
    ui->ipStringValueComboBox->setVisible(true);
    ui->minTimeOfReceiptComboBox->setVisible(true);
    ui->maxTimeOfReceiptComboBox->setVisible(true);
}

}

//clear the advance filtering dialogue boxes
void MainWindow::on_advanceFilterClearPushButton_clicked()
{
for(int i = 0; i < ADVANCE_FILTER_ROW_NUMBER; i++)
{
advanceFilteringComboboxObjectTypeList[i]->setCurrentIndex(-1);
advanceFilteringComboboxAttributeList[i]->setCurrentIndex(-1);
advanceFilteringComboboxMathList[i]->setCurrentIndex(-1);
advanceFilteringComboboxMinValueList[i]->setCurrentIndex(-1);
advanceFilteringComboboxMaxValueList[i]->setCurrentIndex(-1);
if(i < ADVANCE_FILTER_ROW_NUMBER - 1)
advanceFilteringComboboxBooleanList[i]->setCurrentIndex(-1);
}

}

//Add an advance filter row
void MainWindow::on_advanceFilterAddRowPushButton_clicked()
{
advanceFilterCurrentRowNumber++; //advance the master row number

if(advanceFilterCurrentRowNumber >= ADVANCE_FILTER_ROW_NUMBER)
{
    advanceFilterCurrentRowNumber--;  // go back to original value since button is clicked more times than required
    return;
}
advanceFilteringComboboxObjectTypeList[advanceFilterCurrentRowNumber]->setVisible(true);
advanceFilteringComboboxAttributeList[advanceFilterCurrentRowNumber]->setVisible(true);
advanceFilteringComboboxMathList[advanceFilterCurrentRowNumber]->setVisible(true);
advanceFilteringComboboxMinValueList[advanceFilterCurrentRowNumber]->setVisible(true);
advanceFilteringComboboxMaxValueList[advanceFilterCurrentRowNumber]->setVisible(true);
if(advanceFilterCurrentRowNumber < ADVANCE_FILTER_ROW_NUMBER - 1)
     advanceFilteringComboboxBooleanList[advanceFilterCurrentRowNumber]->setVisible(true);

}

//Remove an advance filter row
void MainWindow::on_advanceFilterRemoveRowPushButton_clicked()
{
if(advanceFilterCurrentRowNumber == 0)
return;

advanceFilteringComboboxObjectTypeList[advanceFilterCurrentRowNumber]->setVisible(false);
advanceFilteringComboboxAttributeList[advanceFilterCurrentRowNumber]->setVisible(false);
advanceFilteringComboboxMathList[advanceFilterCurrentRowNumber]->setVisible(false);
advanceFilteringComboboxMinValueList[advanceFilterCurrentRowNumber]->setVisible(false);
advanceFilteringComboboxMaxValueList[advanceFilterCurrentRowNumber]->setVisible(false);
if(advanceFilterCurrentRowNumber < ADVANCE_FILTER_ROW_NUMBER - 1)
    advanceFilteringComboboxBooleanList[advanceFilterCurrentRowNumber]->setVisible(false);

advanceFilterCurrentRowNumber--;  //decrement the master row number

}

leinad

I can't load the mainwindow.ui. Says too many characters. Is there a way I can upload the project as a whole?

jsulm

@leinad Upload your project to some file sharing service and post the link here

leinad

Here is a link to a small project. Thanks for your help!

https://rapidshare.nu/Tb2ds8iboe/test_zip

SGaist

Your file is not available anymore.

leinad

Let's try this link.

https://filebin.net/o9f7ejxiztx0qy0q

leinad

It's been a while. Can someone take a look at this and provide some assistance?

Thanks.

leinad

Old link expired so here is a new link to the project. Please help!

https://filebin.net/iuymg1uuawa9dw9y

SGaist

Why did you add that scroll area alone in its own QSplitter ?

leinad

I'm trying to adjust the scrollarea size, this way users can show all or partial number of combo-boxes. If they expand to full size the scrollbar in the scroll area will disappear and they can see all the comboxes.

SGaist

You should rather add it to your already existing splitter. You don't have the effect you want because you put a single widget in a single splitter.