add buttons in tablewidget's row

[JonB]

@saber , @mrjj

I trust/hope the answer is your own QTableWidgetItem (http://doc.qt.io/qt-5/qtablewidgetitem.html), and that is what @VRonin freaks over and tries to get us to never to use, right? :) You can't do this with a QStyledItemDelgate surely...?

[saber]

@JonB
is there noway to achieve this?

[mrjj]

@saber

Hi
have a look at
http://doc.qt.io/qt-5/qtwidgets-itemviews-stardelegate-example.html

its bascailly what you want to do,.
but except of drawing stars , you will draw your custom buttons.

@JonB
Its setWidgetItem, he hates due to bad performance. ;)
But yes you can make this with Delegate.

[VRonin]

May setItemWidget burn in hell forever!

#include <QApplication>
#include <QTableView>
#include <QStandardItemModel>
#include <QStyledItemDelegate>
#include <QHeaderView>
#include <QPushButton>
class TailButtonsDelegate : public QStyledItemDelegate{
    Q_OBJECT
    Q_DISABLE_COPY(TailButtonsDelegate)
public:
    explicit TailButtonsDelegate(QObject* parent = Q_NULLPTR)
        :QStyledItemDelegate(parent)
    {}
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        Q_ASSERT(index.isValid());
        QStyleOptionViewItem opt = option;
        initStyleOption(&opt, index);
        const QWidget *widget = option.widget;
        QStyle *style = widget ? widget->style() : QApplication::style();
        style->drawControl(QStyle::CE_ItemViewItem, &opt, painter, widget);
        if(!(option.state & QStyle::State_Selected))
            return;
        QStyleOptionButton editButtonOption;
        editButtonOption.text = QString(QChar(0x270D)); //use emoji for text, optionally you can use icon + iconSize
        editButtonOption.rect = QRect(option.rect.left()+option.rect.width()-(2*option.rect.height()),option.rect.top(),option.rect.height(),option.rect.height());
        editButtonOption.features = QStyleOptionButton::None;
        editButtonOption.direction = option.direction;
        editButtonOption.fontMetrics = option.fontMetrics;
        editButtonOption.palette = option.palette;
        editButtonOption.styleObject = option.styleObject;
        QStyleOptionButton removeButtonOption(editButtonOption);
        removeButtonOption.text = QString(QChar(0x274C)); //use emoji for text, optionally you can use icon + iconSize
        removeButtonOption.rect = QRect(option.rect.left()+option.rect.width()-option.rect.height(),option.rect.top(),option.rect.height(),option.rect.height());
        style->drawControl(QStyle::CE_PushButton, &editButtonOption, painter, widget);
        style->drawControl(QStyle::CE_PushButton, &removeButtonOption, painter, widget);
    }
    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        const QSize baseSize = QStyledItemDelegate::sizeHint(option,index);
        return QSize(baseSize.width()+(2*baseSize.height()),baseSize.height());
    }
    QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        QWidget* result = new QWidget(parent);
        result->setGeometry(option.rect);
        QWidget* baseEditor = QStyledItemDelegate::createEditor(result,option,index);
        baseEditor->setObjectName("baseEditor");
        baseEditor->setGeometry(0,0,option.rect.width()-(2*option.rect.height()),option.rect.height());
        QPushButton* editButton = new QPushButton(QChar(0x270D),result);
        editButton->setObjectName("editButton");
        editButton->setGeometry(option.rect.width()-(2*option.rect.height()), 0, option.rect.height(),option.rect.height());
        connect(editButton,&QPushButton::clicked,[](){qDebug("Edit");});
        QPushButton* removeButton = new QPushButton(QChar(0x274C),result);
        removeButton->setObjectName("removeButton");
        removeButton->setGeometry(option.rect.width()-option.rect.height(), 0, option.rect.height(),option.rect.height());
        connect(removeButton,&QPushButton::clicked,[](){qDebug("Remove");});
        return result;
    }
    void setEditorData(QWidget *editor, const QModelIndex &index) const Q_DECL_OVERRIDE{
        QWidget* baseEditor = editor->findChild<QWidget*>("baseEditor");
        Q_ASSERT(baseEditor);
        QStyledItemDelegate::setEditorData(baseEditor,index);
    }
    void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const Q_DECL_OVERRIDE{
        QWidget* baseEditor = editor->findChild<QWidget*>("baseEditor");
        Q_ASSERT(baseEditor);
        QStyledItemDelegate::setModelData(baseEditor,model,index);
    }
    void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        Q_UNUSED(index)
        editor->setGeometry(option.rect);
        QWidget* baseEditor = editor->findChild<QWidget*>("baseEditor");
        Q_ASSERT(baseEditor);
        baseEditor->setGeometry(0,0,option.rect.width()-(2*option.rect.height()),option.rect.height());
        QWidget* editButton = editor->findChild<QWidget*>("editButton");
        Q_ASSERT(editButton);
        editButton->setGeometry(option.rect.width()-(2*option.rect.height()), 0, option.rect.height(),option.rect.height());
        QWidget* removeButton = editor->findChild<QWidget*>("removeButton");
        Q_ASSERT(removeButton);
        removeButton->setGeometry(option.rect.width()-option.rect.height(), 0, option.rect.height(),option.rect.height());
        editor->setGeometry(option.rect);
    }
};
int main(int argc, char **argv) {
    QApplication app(argc, argv);
    QStandardItemModel baseModel;
    baseModel.insertRows(0, 3);
    baseModel.insertColumns(0, 4);
    for(int i=0;i<3;++i){
        for(int j=0;j<4;++j){
            baseModel.setData(baseModel.index(i,j),QStringLiteral("%1,%2").arg(i).arg(j));
        }
    }
    QTableView view;
    view.setEditTriggers(QTableView::AllEditTriggers);
    view.setModel(&baseModel);
    view.setSelectionBehavior(QTableView::SelectRows);
    view.horizontalHeader()->setStretchLastSection(true);
    view.setItemDelegateForColumn(3,new TailButtonsDelegate(&view));
    view.show();
    return app.exec();
}

[mrjj]

And behold the Beauty

Thank you @VRonin :)

[JonB]

@mrjj said in add buttons in tablewidget's row:

@JonB
Its setWidgetItem, he hates due to bad performance. ;)
But yes you can make this with Delegate.

Damn!
Isn't there anything you can't do with delegates and which do require setting the widget item? :)

[mrjj]

@JonB
Not really, but the delegate is kinda involving to make if you have
multiple widgets and need to reflect various states. You have to go digging around in
Qt source to see how to mirror the states to draw them with right QStyle calls.
Also,say you want hover effect on your (drawn widgets) widgets
then you suddenly have to add extra logic to handle and so on.
So first time hurts a lot. ;)

[saber]

@mrjj @VRonin
i need help.
i added the code in sparate header file and used this in the QTableWidget.
by this way

ui->boklist->setItemDelegateForColumn(1, new TailButtonsDelegate(ui->boklist));
}

here is the header file

#ifndef TAILBUTTONSDELEGATE_H
#define TAILBUTTONSDELEGATE_H

#include <QApplication>
#include <QTableView>
#include <QStandardItemModel>
#include <QStyledItemDelegate>
#include <QHeaderView>
#include <QPushButton>

class TailButtonsDelegate : public QStyledItemDelegate {
    Q_OBJECT
    Q_DISABLE_COPY(TailButtonsDelegate)
public:
    explicit TailButtonsDelegate(QObject* parent = Q_NULLPTR)
        :QStyledItemDelegate(parent)
    {}

    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        Q_ASSERT(index.isValid());
        QStyleOptionViewItem opt = option;
        initStyleOption(&opt, index);
        const QWidget *widget = option.widget;
        QStyle *style = widget ? widget->style() : QApplication::style();
        style->drawControl(QStyle::CE_ItemViewItem, &opt, painter, widget);
        if(!(option.state & QStyle::State_Selected))
            return;
        QStyleOptionButton editButtonOption;
        editButtonOption.text = QString(QChar(0x270D)); //use emoji for text, optionally you can use icon + iconSize
        editButtonOption.rect = QRect(option.rect.left()+option.rect.width()-(2*option.rect.height()),option.rect.top(),option.rect.height(),option.rect.height());
        editButtonOption.features = QStyleOptionButton::None;
        editButtonOption.direction = option.direction;
        editButtonOption.fontMetrics = option.fontMetrics;
        editButtonOption.palette = option.palette;
        editButtonOption.styleObject = option.styleObject;
        QStyleOptionButton removeButtonOption(editButtonOption);
        removeButtonOption.text = QString(QChar(0x274C)); //use emoji for text, optionally you can use icon + iconSize
        removeButtonOption.rect = QRect(option.rect.left()+option.rect.width()-option.rect.height(),option.rect.top(),option.rect.height(),option.rect.height());
        style->drawControl(QStyle::CE_PushButton, &editButtonOption, painter, widget);
        style->drawControl(QStyle::CE_PushButton, &removeButtonOption, painter, widget);
    }
    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        const QSize baseSize = QStyledItemDelegate::sizeHint(option,index);
        return QSize(baseSize.width()+(2*baseSize.height()),baseSize.height());
    }
    QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        QWidget* result = new QWidget(parent);
        result->setGeometry(option.rect);
        QWidget* baseEditor = QStyledItemDelegate::createEditor(result,option,index);
        baseEditor->setObjectName("baseEditor");
        baseEditor->setGeometry(0,0,option.rect.width()-(2*option.rect.height()),option.rect.height());
        QPushButton* editButton = new QPushButton(/*QChar(0x270D),*/ result);
        editButton->setObjectName("editButton");
        editButton->setGeometry(option.rect.width()-(2*option.rect.height()), 0, option.rect.height(),option.rect.height());
        connect(editButton,&QPushButton::clicked,[](){qDebug("Edit");});
        QPushButton* removeButton = new QPushButton(QChar(0x274C),result);
        removeButton->setObjectName("removeButton");
        removeButton->setGeometry(option.rect.width()-option.rect.height(), 0, option.rect.height(),option.rect.height());
        connect(removeButton,&QPushButton::clicked,[](){qDebug("Remove");});
        return result;
    }
    void setEditorData(QWidget *editor, const QModelIndex &index) const Q_DECL_OVERRIDE{
        QWidget* baseEditor = editor->findChild<QWidget*>("baseEditor");
        Q_ASSERT(baseEditor);
        QStyledItemDelegate::setEditorData(baseEditor,index);
    }
    void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const Q_DECL_OVERRIDE{
        QWidget* baseEditor = editor->findChild<QWidget*>("baseEditor");
        Q_ASSERT(baseEditor);
        QStyledItemDelegate::setModelData(baseEditor,model,index);
    }
    void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        Q_UNUSED(index)
        editor->setGeometry(option.rect);
        QWidget* baseEditor = editor->findChild<QWidget*>("baseEditor");
        Q_ASSERT(baseEditor);
        baseEditor->setGeometry(0,0,option.rect.width()-(2*option.rect.height()),option.rect.height());
        QWidget* editButton = editor->findChild<QWidget*>("editButton");
        Q_ASSERT(editButton);
        editButton->setGeometry(option.rect.width()-(2*option.rect.height()), 0, option.rect.height(),option.rect.height());
        QWidget* removeButton = editor->findChild<QWidget*>("removeButton");
        Q_ASSERT(removeButton);
        removeButton->setGeometry(option.rect.width()-option.rect.height(), 0, option.rect.height(),option.rect.height());
        editor->setGeometry(option.rect);
    }
};

#endif // TAILBUTTONSDELEGATE_H

it works but there is some problem.

1. i want to set the icon from a resource file . how can i do that?
   
2. when i clicked in the row that is going in the edit mode.(only second column)
   

please help.

NT:

[mrjj]

hi

i want to set the icon from a resource file . how can i do that?

Add it to the res file and
use syntax
":/tractor.png"
To make sure syntax is correct, RIGHt click file after adding it.
it show the path to use.

-when i clicked in the row that is going in the edit mode.(only second column)
Im not sure what issue is. you never edit a "row" just a cell.

[saber]

@mrjj
my mistake .
second cell is going in edit mode.
here is the ui vriable

NT : icon not showing.just showing a part of the text.

/editButtonOption.text = QString(":/icons/edit.svg");

[saber]

ok. i found the fix to show icon .

 editButtonOption.icon = QIcon(":/icons/edit.svg");

but the icon is not in center.

[edwin1234]

i have done making the button inside the table but i cannot click it

[mrjj]

@edwin1234
hi
Did you use the TailButtonsDelegate ?

[edwin1234]

@mrjj yes i did i used this as a header file

[edwin1234]

#ifndef TAILBUTTONSDELEGATE_H
#define TAILBUTTONSDELEGATE_H
#include <QApplication>
#include <QTableView>
#include <QStandardItemModel>
#include <QPushButton>
#include <QIcon>
#include <QSize>
#include <QDebug>
#include <QStyledItemDelegate>
#include <QHeaderView>
#include <QPushButton>
class TailButtonsDelegate : public QStyledItemDelegate {
    Q_OBJECT
    Q_DISABLE_COPY(TailButtonsDelegate)
private slots:
    void on_push_button_editprodorder();
public:
    explicit TailButtonsDelegate(QObject* parent = Q_NULLPTR)
        :QStyledItemDelegate(parent)
    {}

    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        Q_ASSERT(index.isValid());
        QStyleOptionViewItem opt = option;
        initStyleOption(&opt, index);
        const QWidget *widget = option.widget;
        QStyle *style = widget ? widget->style() : QApplication::style();
        style->drawControl(QStyle::CE_ItemViewItem, &opt, painter, widget);
        if(!(option.state & QStyle::State_Selected))
            return;

        QStyleOptionButton editButtonOption;
        editButtonOption.icon = QIcon(":/icon/fontawesome-free-6.2.0-desktop/svgs/solid/fill.svg"); //use emoji for text, optionally you can use icon + iconSize
        editButtonOption.iconSize = QSize(10,10);
        editButtonOption.rect = QRect(option.rect.left()+option.rect.width()-(5*option.rect.height()),option.rect.top(),option.rect.height(),option.rect.height());
        editButtonOption.features = QStyleOptionButton::None;
        editButtonOption.direction = option.direction;
        editButtonOption.fontMetrics = option.fontMetrics;
        editButtonOption.palette = option.palette;
        editButtonOption.styleObject = option.styleObject;
        QStyleOptionButton removeButtonOption(editButtonOption);
        removeButtonOption.icon = QIcon(":/icon/fontawesome-free-6.2.0-desktop/svgs/solid/delete-left.svg"); //use emoji for text, optionally you can use icon + iconSize
        removeButtonOption.iconSize = QSize(10,10);
        removeButtonOption.rect = QRect(option.rect.left()+option.rect.width()-(4*option.rect.height()),option.rect.top(),option.rect.height(),option.rect.height());
        QStyleOptionButton SKUButtonOption(editButtonOption);
        SKUButtonOption.icon = QIcon(":/icon/fontawesome-free-6.2.0-desktop/svgs/solid/code-commit.svg"); //use emoji for text, optionally you can use icon + iconSize
        SKUButtonOption.iconSize = QSize(10,10);
        SKUButtonOption.rect = QRect(option.rect.left()+option.rect.width()-(3*option.rect.height()),option.rect.top(),option.rect.height(),option.rect.height());
        QStyleOptionButton StartButtonOption(editButtonOption);
        StartButtonOption.icon = QIcon(":/icon/fontawesome-free-6.2.0-desktop/svgs/solid/calendar-plus.svg"); //use emoji for text, optionally you can use icon + iconSize
        StartButtonOption.iconSize = QSize(10,10);
        StartButtonOption.rect = QRect(option.rect.left()+option.rect.width()-(2*option.rect.height()),option.rect.top(),option.rect.height(),option.rect.height());
        QStyleOptionButton CloseButtonOption(editButtonOption);
        CloseButtonOption.icon = QIcon(":/icon/fontawesome-free-6.2.0-desktop/svgs/solid/stop.svg"); //use emoji for text, optionally you can use icon + iconSize
        CloseButtonOption.iconSize = QSize(10,10);
        CloseButtonOption.rect = QRect(option.rect.left()+option.rect.width()-option.rect.height(),option.rect.top(),option.rect.height(),option.rect.height());

        style->drawControl(QStyle::CE_PushButton, &SKUButtonOption, painter, widget);
        style->drawControl(QStyle::CE_PushButton, &editButtonOption, painter, widget);
        style->drawControl(QStyle::CE_PushButton, &removeButtonOption, painter, widget);
        style->drawControl(QStyle::CE_PushButton, &StartButtonOption, painter, widget);
        style->drawControl(QStyle::CE_PushButton, &CloseButtonOption, painter, widget);


    }
    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        const QSize baseSize = QStyledItemDelegate::sizeHint(option,index);
        return QSize(baseSize.width()+(2*baseSize.height()),baseSize.height());
    }
    QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        QWidget* result = new QWidget(parent);
        result->setGeometry(option.rect);
        QWidget* baseEditor = QStyledItemDelegate::createEditor(result,option,index);
        baseEditor->setObjectName("baseEditor");
        baseEditor->setGeometry(0,0,option.rect.width()-(5*option.rect.height()),option.rect.height());
        QPushButton* editButton = new QPushButton(/*QChar(0x270D), */result);
        editButton->setObjectName("editButton");
        editButton->setGeometry(option.rect.width()-(5*option.rect.height()), 0, option.rect.height(),option.rect.height());
        connect(editButton,&QPushButton::clicked,[](){qDebug() <<"Edit";});
        QPushButton* removeButton = new QPushButton(QChar(0x274C),result);
        removeButton->setObjectName("removeButton");
        removeButton->setGeometry(option.rect.width()-(4*option.rect.height()), 0, option.rect.height(),option.rect.height());
        connect(removeButton,&QPushButton::clicked,[](){qDebug() <<"Remove";});
        QPushButton* SKUButton = new QPushButton(QChar(0x274C),result);
        SKUButton->setObjectName("SKUButton");
        SKUButton->setGeometry(option.rect.width()-(3*option.rect.height()), 0, option.rect.height(),option.rect.height());
        connect(SKUButton,&QPushButton::clicked,[](){qDebug() <<"Sub Part SKU";});
        QPushButton* StartButton = new QPushButton(QChar(0x274C),result);
        StartButton->setObjectName("StartButton");
        StartButton->setGeometry(option.rect.width()-(2*option.rect.height()), 0, option.rect.height(),option.rect.height());
        connect(StartButton,&QPushButton::clicked,[](){qDebug() <<"Start Plan Order";});
        QPushButton* CloseButton = new QPushButton(QChar(0x274C),result);
        CloseButton->setObjectName("CloseButton");
        CloseButton->setGeometry(option.rect.width()-option.rect.height(), 0, option.rect.height(),option.rect.height());
        connect(CloseButton,&QPushButton::clicked,[](){qDebug() << "Close Plan Order";});
        return result;
    }
    void setEditorData(QWidget *editor, const QModelIndex &index) const Q_DECL_OVERRIDE{
        QWidget* baseEditor = editor->findChild<QWidget*>("baseEditor");
        Q_ASSERT(baseEditor);
        QStyledItemDelegate::setEditorData(baseEditor,index);
    }
    void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const Q_DECL_OVERRIDE{
        QWidget* baseEditor = editor->findChild<QWidget*>("baseEditor");
        Q_ASSERT(baseEditor);
        QStyledItemDelegate::setModelData(baseEditor,model,index);
    }
    void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE{
        Q_UNUSED(index)
        editor->setGeometry(option.rect);
        QWidget* baseEditor = editor->findChild<QWidget*>("baseEditor");
        Q_ASSERT(baseEditor);
        baseEditor->setGeometry(0,0,option.rect.width()-(5*option.rect.height()),option.rect.height());

        QWidget* editButton = editor->findChild<QWidget*>("editButton");
        Q_ASSERT(editButton);
        editButton->setGeometry(option.rect.width()-(5*option.rect.height()), 0, option.rect.height(),option.rect.height());

        QWidget* removeButton = editor->findChild<QWidget*>("removeButton");
        Q_ASSERT(removeButton);
        removeButton->setGeometry(option.rect.width()-(4*option.rect.height()), 0, option.rect.height(),option.rect.height());

        QWidget* SKUButton = editor->findChild<QWidget*>("SKUButton");
        Q_ASSERT(SKUButton);
        SKUButton->setGeometry(option.rect.width()-(3*option.rect.height()), 0, option.rect.height(),option.rect.height());

        QWidget* StartButton = editor->findChild<QWidget*>("StartButton");
        Q_ASSERT(StartButton);
        StartButton->setGeometry(option.rect.width()-(2 *option.rect.height()), 0, option.rect.height(),option.rect.height());

        QWidget* CloseButton = editor->findChild<QWidget*>("CloseButton");
        Q_ASSERT(CloseButton);
        CloseButton->setGeometry(option.rect.width()-option.rect.height(), 0, option.rect.height(),option.rect.height());
        editor->setGeometry(option.rect);
    }
};
#endif // TAILBUTTONSDELEGATE_H

[mrjj]

Hi
So what do you mean by "inside the table but i cannot click it" ?

It's currently connected to a lambda that prints "Edit" in application output.

connect(editButton,&QPushButton::clicked,{qDebug("Edit");});

This part is not working ? or what is not working ?