Setting background of HeadData for QTableView is doesn't work

csding

@
QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if(role ==Qt::BackgroundRole)
{
//if(orientation == Qt::Vertical)
if (orientation == Qt::Horizontal)
switch (section)
{
case 0:
return QBrush(QColor(Qt::blue));
case 1:
return QVariant(QColor(Qt::blue));
default:
return QAbstractTableModel::headerData(section,orientation,role);
}
}
}
@
code of part:
@
class TableModel : public QAbstractTableModel
{
Q_OBJECT
public:
TableModel(int Columns, QStringList Names, QObject *parent = 0);
int rowCount(const QModelIndex &parent) const;
int columnCount(const QModelIndex &parent) const;
QVariant data(const QModelIndex &index, int role) const;
QVariant headerData(int section, Qt::Orientation orientation, int role) const;
}
@
@
class SortFilterProxyModel : public QSortFilterProxyModel
{
Q_OBJECT

public:
SortFilterProxyModel(QString typefile, QObject *parent = 0);
QVariant data(const QModelIndex &index, int role) const;
QVariant headerData(int section, Qt::Orientation orientation, int role) const;
}
@
@
int main(int argc, char *argv[])
{
SortFilterProxyModel * proxyModel = new SortFilterProxyModel();
proxyModel->setSourceModel(table);
QTableView * tableView->new QTableView();
tableView->setModel(proxyModel);
return a.exec();
}
@

Above code is not setting background in my program.

Setting color or style of fonts of HeadData is working, but background of HeadData is not work in function QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const using return QVariant(QColor(Qt::blue)); or return QBrush(QColor(Qt::blue));
Function setStyleSheet() is working normally, but it is not metting my dynamic setting color on any rows or colums with HeadData.
@
tableView->horizontalHeader()->setStyleSheet("QHeaderView::section{background:skyblue;}");
@
Above the code is working, But i cannot use it to metting my goal. I want "return QVariant(QColor(Qt::blue));" to work for my goal.
Can anyone help me?
Thanks!

csding

Sofa is mine.

raven-worx

try using background-color. At least in the "docs":http://qt-project.org/doc/qt-4.8/stylesheet-examples.html#customizing-qheaderview they use it??

csding

This code isworking.
tableView->horizontalHeader()->setStyleSheet("QHeaderView::section{background:skyblue;}");
But it is not metting my dynamic setting color on any rows or colums with HeadData.
[quote author="raven-worx" date="1371192413"]try using background-color. At least in the "docs":http://qt-project.org/doc/qt-4.8/stylesheet-examples.html#customizing-qheaderview they use it??[/quote]

andre

According to the documentation, using the background role should work. I see no obvious mistake in your code from your first post. Please prepare a small test case to demonstrate the issue in isolation. First post, so we can have a look. Then, if it turns out to be a bug, file a bug report.

csding

OK.
[quote author="Andre" date="1371196833"]According to the documentation, using the background role should work. I see no obvious mistake in your code from your first post. Please prepare a small test case to demonstrate the issue in isolation. First post, so we can have a look. Then, if it turns out to be a bug, file a bug report.[/quote]

csding

U p!

csding

TestBackground.pro
@
QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = TestBackground
TEMPLATE = app

SOURCES += main.cpp
mainwindow.cpp
tablemodel.cpp

HEADERS += mainwindow.h
tablemodel.h
@

tablemodel.h
@
#ifndef TABLEMODEL_H
#define TABLEMODEL_H
#include <QAbstractTableModel>

class TableModel : public QAbstractTableModel
{
Q_OBJECT
public:
TableModel(QObject *parent = 0);
int rowCount(const QModelIndex &parent) const;
int columnCount(const QModelIndex &parent) const;
QVariant data(const QModelIndex &index, int role) const;
QVariant headerData(int section, Qt::Orientation orientation, int role) const;
private:
};
#endif

@

tablemodel.cpp
@
#include "tablemodel.h"
#include <QColor>
#include <QBrush>
#include <qDebug>
#include <QString>

TableModel::TableModel(QObject *parent)
: QAbstractTableModel(parent)
{
}

int TableModel::rowCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return 2;
}

int TableModel::columnCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return 2;
}

QVariant TableModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();

if (role == Qt::DisplayRole)
{
    if (index.column() == 0)
        return QString("zhang san");
    else if (index.column() == 1)
        return QString("china");
}
if(role == Qt::BackgroundRole)
{
    if (index.column() == 0)
        return QVariant(QColor(Qt::green));
    else if (index.column() == 1)
        return QVariant(QColor(Qt::green));
}

return QVariant();

}

QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role == Qt::DisplayRole)
{
if (orientation == Qt::Horizontal) {
switch (section) {
case 0:
return tr("Name");
case 1:
return tr("Address");

            default:
                return QVariant();
        }
    }
}
if(role == Qt::ForegroundRole)
{
    if (orientation == Qt::Horizontal)
    {
        switch (section)
        {
            case 0:
                return QVariant(QColor(Qt::blue));
            case 1:
                return QVariant(QColor(Qt::blue));
            default:
                return QAbstractTableModel::headerData(section,orientation,role);
        }
    }
}
if(role ==Qt::BackgroundRole)
{
    //if(orientation == Qt::Vertical)
    if (orientation == Qt::Horizontal)
    {
        switch (section)
        {
            case 0:
                qDebug() << "case 0";
                return  QBrush(QColor(Qt::red));
            case 1:
                qDebug() << "case 1";
                return  QVariant(QColor(Qt::red));
            default:
                qDebug() << "default";
                return QAbstractTableModel::headerData(section,orientation,role);
        }
    }
}

return QVariant();

}
@

mainwindow.h
@
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QTableView>
#include <tablemodel.h>
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private:
TableModel * table;
};
#endif
@

mainwindow.cpp
@
#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent)
{
table = new TableModel(this);
QTableView *tableView = new QTableView;
tableView->setModel(table);
setCentralWidget(tableView);
}
MainWindow::~MainWindow()
{
}
@

main.cpp
@
#include "mainwindow.h"
#include <QApplication>

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

Setting background of HeadData for QTableView is doesn’t work. Is it a bug for Qt ?
My original post is here:
http://qt-project.org/forums/viewthread/28840/#129491

tobias.hunger

Please "file a bug report":https://bugreports.qt-project.org/ for things you consider to be a bug.

The bugtracker is a way better tool to discuss (possible) bugs than this forum.

andre

[quote author="csding" date="1371345306"]U p![/quote]

Well... we agreed you'd create a small, self-contained, compile-able example demonstrating the issue. Based on that, I said we could take a look to see if the error is on your side after all, or you have found a bug in Qt. So far, I haven't seen anything of the sort.

csding

I have posted the small,self-contained, compile-able example in a new another thread. You can visit on http://qt-project.org/forums/viewthread/28901/
Sorry, maybe i should notice you with it intime.

[quote author="Andre" date="1371451763"]
[quote author="csding" date="1371345306"]U p![/quote]

Well... we agreed you'd create a small, self-contained, compile-able example demonstrating the issue. Based on that, I said we could take a look to see if the error is on your side after all, or you have found a bug in Qt. So far, I haven't seen anything of the sort.[/quote]

andre

I merged the two topics. Please don't start more than one topic on the same issue. Tobias: I asked for the example as a form of bug triaging even before it ends up in the tracker :)

csding

First i want to know whether it is a bug in Qt, if true, i can write a bug report hand in. Waitting you testing for it.
thanks!.

[quote author="Andre" date="1371454106"]I merged the two topics. Please don't start more than one topic on the same issue. Tobias: I asked for the example as a form of bug triaging even before it ends up in the tracker :)

[/quote]

csding

Please download the small case visit on:
http://pan.baidu.com/share/link?shareid=3014503980&uk=3070491333

BenShafer

Is there a bug to track for this item yet? I have the same problem, but I'm still using 4.7.2. Has it been fixed in 4.8.6?