C++ QLayout::itemAt方法代码示例

void StartMenu::SortScrollArea(QScrollArea *area){
  //qDebug() << "Sorting Scroll Area:";
  //Sort all the items in the scroll area alphabetically
  QLayout *lay = area->widget()->layout();
  QStringList items;
  for(int i=0; i<lay->count(); i++){
    items << lay->itemAt(i)->widget()->whatsThis();
  }
  
  items.sort();
  //qDebug() << " - Sorted Items:" << items;
  for(int i=0; i<items.length(); i++){
    if(items[i].isEmpty()){ continue; }
    //QLayouts are weird in that they can only add items to the end - need to re-insert almost every item
    for(int j=0; j<lay->count(); j++){
      //Find this item
      if(lay->itemAt(j)->widget()->whatsThis()==items[i]){
	//Found it - now move it if necessary
	//qDebug() << "Found Item:" << items[i] << i << j;
	lay->addItem( lay->takeAt(j) );
	break;
      }
    }
  }
}

void TestController::unload() {
    //Inputs
    QLayout* layout = getView().getUi().grx_test_inputs->layout();

    for (int i = layout->count() - 1; i >= 0; --i) {
        QLayoutItem* item = layout->itemAt(i);
        GuiGrapher* g = dynamic_cast<GuiGrapher*> (item->widget());
        if (g) {
            QObject::disconnect(g, SIGNAL(onChangeInputValue()), this,
                                SLOT(onInputValueChanged()));
        }
        layout->removeItem(item);
        delete item->widget();
        delete item;
    }

    //Rules
    getView().getUi().lsw_test_rules->clear();
    getView().getUi().lsw_test_rules_activation->clear();

    //Outputs
    layout = getView().getUi().grx_test_outputs->layout();
    for (int i = layout->count() - 1; i >= 0; --i) {
        QLayoutItem* item = layout->itemAt(i);
        GuiGrapher* g = dynamic_cast<GuiGrapher*> (item->widget());
        if (g) {
            QObject::disconnect(this, SIGNAL(forceUpdate()), g, SLOT(updateUi()));
        }
        layout->removeItem(item);
        delete item->widget();
        delete item;
    }
}

void StartupView::showDetailsForItem( const QModelIndex & index )
{
  QLayout * layout = m_projectDetailView->layout();

  for( int i = 0; i < layout->count(); i++ )
  {
    delete layout->itemAt(i)->widget();
    layout->removeItem(layout->itemAt(i));
  }

  QString name = m_templateListModel->data(index,Qt::ToolTipRole).toString();

  QString description = m_templateListModel->data(index,Qt::WhatsThisRole).toString();

  if( ! name.isEmpty() )
  {
    auto nameLabel = new QLabel(name);

    nameLabel->setStyleSheet("QLabel { font: bold }");

    layout->addWidget(nameLabel);
  }

  if( ! description.isEmpty() )
  {
    auto descriptionLabel = new QTextEdit(description);
    
    descriptionLabel->setStyleSheet("QTextEdit { border: none; }");
    
    descriptionLabel->setReadOnly(true);

    layout->addWidget(descriptionLabel);
  }

}

void MainWindow::changeScreen(QWidget* screen){
	mCurrentScreen = screen;

	QLayout* layout = ui.screenContainer->layout();
	layout->removeWidget(layout->itemAt(0)->widget());
	layout->addWidget(mCurrentScreen);
}

dmz::V8Value
dmz::JsModuleUiV8QtBasic::_layout_at (const v8::Arguments &Args) {

   v8::HandleScope scope;
   V8Value result = v8::Undefined ();

   JsModuleUiV8QtBasic *self = _to_self (Args);
   if (self) {

      QLayout *layout = self->v8_to_qobject<QLayout> (Args.This ());
      if (layout) {

         if (Args.Length () > 0) {

            QWidget *widget = layout->itemAt (v8_to_int32 (Args[0]))->widget ();
            if (widget) {

               result = self->create_v8_qwidget (widget);
            }
         }
      }
   }

   return scope.Close (result);
}

void QToolBar::setIconSize(const QSize &iconSize)
{
    Q_D(QToolBar);
    QSize sz = iconSize;
    if (!sz.isValid()) {
        QMainWindow *mw = qobject_cast<QMainWindow *>(parentWidget());
        if (mw && mw->layout()) {
            QLayout *layout = mw->layout();
            int i = 0;
            QLayoutItem *item = 0;
            do {
                item = layout->itemAt(i++);
                if (item && (item->widget() == this))
                    sz = mw->iconSize();
            } while (!sz.isValid() && item != 0);
        }
    }
    if (!sz.isValid()) {
        const int metric = style()->pixelMetric(QStyle::PM_ToolBarIconSize, 0, this);
        sz = QSize(metric, metric);
    }
    if (d->iconSize != sz) {
        d->iconSize = sz;
        setMinimumSize(0, 0);
        emit iconSizeChanged(d->iconSize);
    }
    d->explicitIconSize = iconSize.isValid();

    d->layout->invalidate();
}

// Writes the user input from the form into the oc_auth_form structs we got from
// libopenconnect, and wakes the worker thread up to try to log in and obtain a
// cookie with this data
void OpenconnectAuthWidget::formLoginClicked()
{
    Q_D(OpenconnectAuthWidget);

    const int lastIndex = d->ui.loginBoxLayout->count() - 1;
    QLayout *layout = d->ui.loginBoxLayout->itemAt(d->passwordFormIndex)->layout();
    struct oc_auth_form *form = (struct oc_auth_form *) d->ui.loginBoxLayout->itemAt(lastIndex)->widget()->property("openconnect_form").value<quintptr>();

    for (int i = 0; i < layout->count(); i++) {
        QLayoutItem *item = layout->itemAt(i);
        QWidget *widget = item->widget();
        if (widget && widget->property("openconnect_opt").isValid()) {
            struct oc_form_opt *opt = (struct oc_form_opt *) widget->property("openconnect_opt").value<quintptr>();
            const QString key = QString("form:%1:%2").arg(QLatin1String(form->auth_id)).arg(QLatin1String(opt->name));
            if (opt->type == OC_FORM_OPT_PASSWORD || opt->type == OC_FORM_OPT_TEXT) {
                QLineEdit *le = qobject_cast<QLineEdit*>(widget);
                QByteArray text = le->text().toUtf8();
                openconnect_set_option_value(opt, text.data());
                if (opt->type == OC_FORM_OPT_TEXT) {
                    d->secrets.insert(key, le->text());
                } else {
                    d->tmpSecrets.insert(key, le->text());
                }
            } else if (opt->type == OC_FORM_OPT_SELECT) {
                QComboBox *cbo = qobject_cast<QComboBox*>(widget);
                QByteArray text = cbo->itemData(cbo->currentIndex()).toString().toAscii();
                openconnect_set_option_value(opt, text.data());
                d->secrets.insert(key,cbo->itemData(cbo->currentIndex()).toString());
            }
        }
    }

    deleteAllFromLayout(d->ui.loginBoxLayout);
    d->workerWaiting.wakeAll();
}

AskColorDialog::AskColorDialog(QColor initial, QWidget *parent) :
	QColorDialog(initial, parent)
{
	hexcode = new QLineEdit( this);
	hexcode->setMaxLength(9);
	QLayout *layout = this->layout();

	// find a nice spot in the layout...
	for (int k=0; k<2; k++) if (layout) {
		for (int i=2; i>=0; i--) {
			QLayoutItem *test = layout->itemAt(i);
			if (test) if (test->layout()) {
				layout = test->layout();
				//qDebug("ok %d (%d)",i,k);
				break;
			}
		}
	}

	if (layout) layout->addWidget(hexcode);

	connect(hexcode,SIGNAL(textEdited(QString)),this,SLOT(setHex()));
	connect(this,SIGNAL(currentColorChanged(QColor)),this,SLOT(updateHex()));


	setOption(ShowAlphaChannel, true);
	updateHex();
	setHex();
}

ActivityWidget::ActivityWidget(const QString& activity, QWidget* parent)
    : QWidget(parent)
    , m_ui(new Ui::ActivityWidget)
    , m_profilesConfig(KSharedConfig::openConfig("powermanagementprofilesrc", KConfig::SimpleConfig | KConfig::CascadeConfig))
    , m_activity(activity)
    , m_activityConsumer(new KActivities::Consumer(this))
    , m_actionEditWidget(new ActionEditWidget(QString("Activities/%1/SeparateSettings").arg(activity)))
{
    m_ui->setupUi(this);

    m_ui->separateSettingsLayout->addWidget(m_actionEditWidget);

    for (int i = 0; i < m_ui->specialBehaviorLayout->count(); ++i) {
        QWidget *widget = m_ui->specialBehaviorLayout->itemAt(i)->widget();
        if (widget) {
            widget->setVisible(false);
            connect(m_ui->specialBehaviorRadio, SIGNAL(toggled(bool)), widget, SLOT(setVisible(bool)));
        } else {
            QLayout *layout = m_ui->specialBehaviorLayout->itemAt(i)->layout();
            if (layout) {
                for (int j = 0; j < layout->count(); ++j) {
                    QWidget *widget = layout->itemAt(j)->widget();
                    if (widget) {
                        widget->setVisible(false);
                        connect(m_ui->specialBehaviorRadio, SIGNAL(toggled(bool)), widget, SLOT(setVisible(bool)));
                    }
                }
            }
        }
    }

bool MTPageNym_AltLocation::deleteSingleContactItem(GroupBoxContactItems * pGroupBox, QWidget * pWidget)
{
    if (nullptr == pGroupBox || nullptr == pWidget)
        return false;

    // We have to remove the radio button from the buttongroup.
    QLayout * pItemLayout = pWidget->layout(); // Combo, Line Edit, Radio, Delete

    if (nullptr != pItemLayout)
    {
        const int nIndexRadioBtn  = 2; // todo hardcoding.
        QWidget * pRadioBtnWidget = pItemLayout->itemAt(nIndexRadioBtn)->widget();

        if (nullptr != pRadioBtnWidget)
        {
            QRadioButton * pRadioBtn = dynamic_cast<QRadioButton *>(pRadioBtnWidget);
            if (nullptr != pRadioBtn)
            {
                pGroupBox->removeRadioButton(pRadioBtn);
            }
        }
    }
    // --------------------------------------
    pGroupBox->layout()->removeWidget(pWidget);

    pWidget->setParent(nullptr);
    pWidget->disconnect();
    pWidget->deleteLater();

    PrepareOutputData();

    return true;
}

void NLayoutPrototype::setSpacingAt(int index, int spacing)
{
	QLayout *layout = qscriptvalue_cast<QLayout *>(thisObject());
	if (layout) {
		layout->removeItem(layout->itemAt(index));
		dynamic_cast<QBoxLayout *>(layout)->insertSpacing(index, spacing);
	}
}

//! [0]
static void paintLayout(QPainter *painter, QLayoutItem *item)
{
    QLayout *layout = item->layout();
    if (layout) {
        for (int i = 0; i < layout->count(); ++i)
            paintLayout(painter, layout->itemAt(i));
    }
    painter->drawRect(item->geometry());
}

// Never used.
// Get the widget in the last group box at the position 'pos'.
QWidget *PinConfig::outWidgetAt(int pos)
{
    QLayout *groupBoxLayout = this->subConfigGroupBox->layout();
    if (!groupBoxLayout)
        return NULL;
    QLayoutItem *layoutItem = groupBoxLayout->itemAt(pos);
    if (!layoutItem)
        return NULL;
    return layoutItem->widget();
}

    /**
     * Slot called when the user wants to see the dialog for selecting
     * what columns are visible in the tables of peaks.
     */
    void PeaksViewer::showPeaksTableColumnOptions()
    {
      std::set<QString> areShown;

      // get the list of all the columns that are already shown
      QLayout* layout = this->layout();
      const int size = layout->count();
      for(int i = 0; i < size; ++i)
      {
        auto item = layout->itemAt(i);
        if(auto widget = item->widget())
        {
          if (auto table = dynamic_cast<PeaksWorkspaceWidget *>(widget))
          {
            auto shown = table->getShownColumns();
            areShown.insert(shown.begin(), shown.end());
          }
        }
      }

      // show the dialog box
      PeaksTableColumnsDialog dialog(this);
      dialog.setVisibleColumns(areShown);
      dialog.exec();
      auto result = static_cast<QDialog::DialogCode>(dialog.result());
      if (result != QDialog::DialogCode::Accepted)
        return;

      // set what columns to show
      auto toShow = dialog.getVisibleColumns();
      for(int i = 0; i < size; ++i)
      {
        auto item = layout->itemAt(i);
        if(auto widget = item->widget())
        {
          if (auto table = dynamic_cast<PeaksWorkspaceWidget *>(widget))
          {
            table->setShownColumns(toShow);
          }
        }
      }
    }

void KoLineEditAction::setVisible(bool showAction)
{
    QLayout* currentLayout = defaultWidget()->layout();

    this->QAction::setVisible(showAction);

    for(int i=0;i<currentLayout->count();i++) {
        currentLayout->itemAt(i)->widget()->setVisible(showAction);
    }
    defaultWidget()->setVisible(showAction);
}