C++ iconSize函数代码示例

void QgsLegendLayer::refreshSymbology( const QString& key )
{
  QgsMapLayer* theMapLayer = QgsMapLayerRegistry::instance()->mapLayer( key );
  if ( !theMapLayer )
  {
    return;
  }

  if ( theMapLayer->type() == QgsMapLayer::VectorLayer ) // VECTOR
  {
    QgsVectorLayer* vlayer = qobject_cast<QgsVectorLayer *>( theMapLayer );
    vectorLayerSymbologyV2( vlayer );
  }
  else if ( theMapLayer->type() == QgsMapLayer::RasterLayer ) // RASTER
  {
    QgsRasterLayer* rlayer = qobject_cast<QgsRasterLayer *>( theMapLayer );
    rasterLayerSymbology( rlayer ); // get and change symbology
  }
  else if ( theMapLayer->type() == QgsMapLayer::PluginLayer )
  {
    QgsPluginLayer* player = qobject_cast<QgsPluginLayer *>( theMapLayer );

    QSize iconSize( 16, 16 );
    SymbologyList itemList = player->legendSymbologyItems( iconSize );

    changeSymbologySettings( theMapLayer, itemList );
  }

  updateIcon();
}

QIcon QgsPenStyleComboBox::iconForPen( Qt::PenStyle style )
{
  QPixmap pix( iconSize() );
  QPainter p;
  pix.fill( Qt::transparent );

  p.begin( &pix );
  QPen pen( style );
  pen.setWidth( 2 );
  p.setPen( pen );
  double mid = iconSize().height() / 2.0;
  p.drawLine( 0, mid, iconSize().width(), mid );
  p.end();

  return QIcon( pix );
}

void MainWindow::setupFindToolBar()
{
  m_findToolBar->setObjectName("FindToolBar");
  m_findToolBar->setVisible(false);

  QLabel* findLabel = new QLabel("Find Text: ");
  m_findLineEdit = new QLineEdit();
  m_findLineEdit->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
  m_findLineEdit->setFocusPolicy(Qt::ClickFocus);
  connect(m_findLineEdit, SIGNAL(textChanged(const QString&)),
          this, SLOT(setFindText(const QString&)));

  //add a spacer
  QWidget* spacer = new QWidget();
  spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);

  //set the size of the buttons and the icon based on the height of the line edit
  QSize buttonSize(m_findLineEdit->sizeHint().height()-4, m_findLineEdit->sizeHint().height()-4);
  QSize iconSize(m_findLineEdit->sizeHint().height()-8, m_findLineEdit->sizeHint().height()-8);

  QPushButton* closeButton = new QPushButton(QIcon(QString("icons/stop.png")), "");
  closeButton->setToolTip("Close the find toolbar");
  closeButton->setFlat(true);
  closeButton->setFixedSize(buttonSize);
  closeButton->setIconSize(iconSize);
  closeButton->setFocusPolicy(Qt::ClickFocus);
  connect(closeButton, SIGNAL(released()), this, SLOT(closeFindToolBar()));

  m_findToolBar->addWidget(findLabel);
  m_findToolBar->addWidget(m_findLineEdit);
  m_findToolBar->addWidget(spacer);
  m_findToolBar->addWidget(closeButton);
}

QSize
AnimatedBarWidget::sizeHint() const
{
    QSize size = QAbstractButton::sizeHint();
    size.setHeight( iconSize().height() + 8 );
    return size;
}

void ElidingButton::elideText( const QSize &widgetSize )
{
    const int width = widgetSize.width();
    const int iconWidth = icon().isNull() ? 0 : iconSize().width();

    int left, top, right, bottom;
    getContentsMargins( &left, &top, &right, &bottom );
    int padding = left + right + 4;
    int textWidth = width - ( iconWidth + padding );

    QFontMetrics fm( font() );
    QString elidedText = fm.elidedText( m_fullText, Qt::ElideRight, textWidth );
    QPushButton::setText( elidedText );

    bool elided = ( elidedText != m_fullText );

    // If there is no tooltip set, then we set it to be the full text when elided,
    // and clear it if the button is no longer elided.
    const QString tip = toolTip();
    if( elided && tip.isEmpty() )
        setToolTip( m_fullText );
    else if( !elided && tip == m_fullText )
        setToolTip( QString() );

    if( elided )
        setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed );
    else
        setSizePolicy( QSizePolicy::Maximum, QSizePolicy::Fixed );

    if( m_isElided != elided )
    {
        m_isElided = elided;
        emit( sizePolicyChanged() );
    }
}

void ResourceListWidget::startDrag(Qt::DropActions supportedActions)
{
    if (supportedActions == Qt::MoveAction)
        return;

    QListWidgetItem *item = currentItem();
    if (!item)
        return;

    const QString filePath = item->data(Qt::UserRole).toString();
    const QIcon icon = item->icon();

    QMimeData *mimeData = new QMimeData;
    const QtResourceView::ResourceType type = icon.isNull() ? QtResourceView::ResourceOther : QtResourceView::ResourceImage;
    mimeData->setText(QtResourceView::encodeMimeData(type , filePath));

    QDrag *drag = new QDrag(this);
    if (!icon.isNull()) {
        const QSize size = icon.actualSize(iconSize());
        drag->setPixmap(icon.pixmap(size));
        drag->setHotSpot(QPoint(size.width() / 2, size.height() / 2));
    }

    drag->setMimeData(mimeData);
    drag->exec(Qt::CopyAction);
}

    void paint(QPainter * painter,
            const QStyleOptionGraphicsItem * option, QWidget * widget)
    {
        Q_UNUSED(option);
        Q_UNUSED(widget);

        // BasicWidget::paint(painter, option, widget);
        if (iconInSvg().isValid()) {
            QRectF iconRect = QRectF(QPointF(), iconSize());
            QSizeF sizeDiff = size() - iconRect.size();

            iconRect.setTopLeft(QPointF(sizeDiff.width() / 2, sizeDiff.height() / 2));
            if (animate) {
                iconInSvg().paint(painter,
                    iconRect.left(),
                    iconRect.top(),
                    "frame" + QString::number(frame));
            } else {
                iconInSvg().paint(painter,
                    iconRect.left(),
                    iconRect.top(),
                    "frame" + QString::number(
                        (frame > 0) ? frameCount : 0
                    ));

            }
        }
    }

void pDockWidgetTitleBar::updateStandardIcons()
{
    const QSize size( 16, 16 );
    QPixmap pixmap;
    QRect rect( QPoint(), iconSize() );
    
    QTransform transform;
    transform.rotate( 90 );
    
    pixmap = style()->standardIcon( QStyle::SP_ToolBarHorizontalExtensionButton, 0, widgetForAction( aOrientation ) ).pixmap( size );
    rect.moveCenter( pixmap.rect().center() );
    pixmap = pixmap.copy( rect );
    pixmap = pixmap.transformed( transform, Qt::SmoothTransformation );
    aOrientation->setIcon( pixmap );
    
    pixmap = style()->standardIcon( QStyle::SP_TitleBarNormalButton, 0, widgetForAction( aFloat ) ).pixmap( size );
    rect.moveCenter( pixmap.rect().center() );
    pixmap = pixmap.copy( rect );
    aFloat->setIcon( pixmap );
    
    pixmap = style()->standardIcon( QStyle::SP_TitleBarCloseButton, 0, widgetForAction( aClose ) ).pixmap( size );
    rect.moveCenter( pixmap.rect().center() );
    pixmap = pixmap.copy( rect );
    aClose->setIcon( pixmap );
}

/*!
    Initialize \a option with the values from this QPushButton. This method is useful
    for subclasses when they need a QStyleOptionButton, but don't want to fill
    in all the information themselves.

    \sa QStyleOption::initFrom()
*/
void QPushButton::initStyleOption(QStyleOptionButton *option) const
{
    if (!option)
        return;

    Q_D(const QPushButton);
    option->initFrom(this);
    option->features = QStyleOptionButton::None;
    if (d->flat)
        option->features |= QStyleOptionButton::Flat;
#ifndef QT_NO_MENU
    if (d->menu)
        option->features |= QStyleOptionButton::HasMenu;
#endif
    if (autoDefault())
        option->features |= QStyleOptionButton::AutoDefaultButton;
    if (d->defaultButton)
        option->features |= QStyleOptionButton::DefaultButton;
    if (d->down || d->menuOpen)
        option->state |= QStyle::State_Sunken;
    if (d->checked)
        option->state |= QStyle::State_On;
    if (!d->flat && !d->down)
        option->state |= QStyle::State_Raised;
    option->text = d->text;
    option->icon = d->icon;
    option->iconSize = iconSize();
}

void RListWidget::mouseMoveEvent(QMouseEvent* e) {
    if (e->x()-iconOffset < iconSize().width()) {
    } else {
        e->ignore();
        QListWidget::mouseMoveEvent(e);
    }
}

QModelIndex FolderViewListView::indexAt(const QPoint& point) const {
  QModelIndex index = QListView::indexAt(point);
  // NOTE: QListView has a severe design flaw here. It does hit-testing based on the 
  // total bound rect of the item. The width of an item is determined by max(icon_width, text_width).
  // So if the text label is much wider than the icon, when you click outside the icon but
  // the point is still within the outer bound rect, the item is still selected.
  // This results in very poor usability. Let's do precise hit-testing here.
  // An item is hit only when the point is in the icon or text label.
  // If the point is in the bound rectangle but outside the icon or text, it should not be selected.
  if(viewMode() == QListView::IconMode && index.isValid()) {
    // FIXME: this hack only improves the usability partially. We still need more precise sizeHint handling.
    // FolderItemDelegate* delegate = static_cast<FolderItemDelegate*>(itemDelegateForColumn(FolderModel::ColumnFileName));
    // Q_ASSERT(delegate != NULL);
    // We use the grid size - (2, 2) as the size of the bounding rectangle of the whole item.
    // The width of the text label hence is gridSize.width - 2, and the width and height of the icon is from iconSize().
    QRect visRect = visualRect(index); // visibal area on the screen
    QSize itemSize = gridSize();
    itemSize.setWidth(itemSize.width() - 2);
    itemSize.setHeight(itemSize.height() - 2);
    QSize _iconSize = iconSize();
    int textHeight = itemSize.height() - _iconSize.height();
    if(point.y() < visRect.bottom() - textHeight) {
      // the point is in the icon area, not over the text label
      int iconXMargin = (itemSize.width() - _iconSize.width()) / 2;
      if(point.x() < (visRect.left() + iconXMargin) || point.x() > (visRect.right() - iconXMargin))
	return QModelIndex();
    }
    // qDebug() << "visualRect: " << visRect << "point:" << point;
  }
  return index;
}

int QTabBar::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
    _id = QWidget::qt_metacall(_c, _id, _a);
    if (_id < 0)
        return _id;
    if (_c == QMetaObject::InvokeMetaMethod) {
        if (_id < 8)
            qt_static_metacall(this, _c, _id, _a);
        _id -= 8;
    }
#ifndef QT_NO_PROPERTIES
      else if (_c == QMetaObject::ReadProperty) {
        void *_v = _a[0];
        switch (_id) {
        case 0: *reinterpret_cast< Shape*>(_v) = shape(); break;
        case 1: *reinterpret_cast< int*>(_v) = currentIndex(); break;
        case 2: *reinterpret_cast< int*>(_v) = count(); break;
        case 3: *reinterpret_cast< bool*>(_v) = drawBase(); break;
        case 4: *reinterpret_cast< QSize*>(_v) = iconSize(); break;
        case 5: *reinterpret_cast< Qt::TextElideMode*>(_v) = elideMode(); break;
        case 6: *reinterpret_cast< bool*>(_v) = usesScrollButtons(); break;
        case 7: *reinterpret_cast< bool*>(_v) = tabsClosable(); break;
        case 8: *reinterpret_cast< SelectionBehavior*>(_v) = selectionBehaviorOnRemove(); break;
        case 9: *reinterpret_cast< bool*>(_v) = expanding(); break;
        case 10: *reinterpret_cast< bool*>(_v) = isMovable(); break;
        case 11: *reinterpret_cast< bool*>(_v) = documentMode(); break;
        }
        _id -= 12;
    } else if (_c == QMetaObject::WriteProperty) {
        void *_v = _a[0];
        switch (_id) {
        case 0: setShape(*reinterpret_cast< Shape*>(_v)); break;
        case 1: setCurrentIndex(*reinterpret_cast< int*>(_v)); break;
        case 3: setDrawBase(*reinterpret_cast< bool*>(_v)); break;
        case 4: setIconSize(*reinterpret_cast< QSize*>(_v)); break;
        case 5: setElideMode(*reinterpret_cast< Qt::TextElideMode*>(_v)); break;
        case 6: setUsesScrollButtons(*reinterpret_cast< bool*>(_v)); break;
        case 7: setTabsClosable(*reinterpret_cast< bool*>(_v)); break;
        case 8: setSelectionBehaviorOnRemove(*reinterpret_cast< SelectionBehavior*>(_v)); break;
        case 9: setExpanding(*reinterpret_cast< bool*>(_v)); break;
        case 10: setMovable(*reinterpret_cast< bool*>(_v)); break;
        case 11: setDocumentMode(*reinterpret_cast< bool*>(_v)); break;
        }
        _id -= 12;
    } else if (_c == QMetaObject::ResetProperty) {
        _id -= 12;
    } else if (_c == QMetaObject::QueryPropertyDesignable) {
        _id -= 12;
    } else if (_c == QMetaObject::QueryPropertyScriptable) {
        _id -= 12;
    } else if (_c == QMetaObject::QueryPropertyStored) {
        _id -= 12;
    } else if (_c == QMetaObject::QueryPropertyEditable) {
        _id -= 12;
    } else if (_c == QMetaObject::QueryPropertyUser) {
        _id -= 12;
    }
#endif // QT_NO_PROPERTIES
    return _id;
}

QStyleOptionButton OrientationButton::getStyleOption() const
{
    QStyleOptionButton opt;
    opt.initFrom(this);
    if (orientation_ == Qt::Vertical)
    {
        QSize size = opt.rect.size();
        size.transpose();
        opt.rect.setSize(size);
    }
    opt.features = QStyleOptionButton::None;
    if (isFlat())
        opt.features |= QStyleOptionButton::Flat;
    if (menu())
        opt.features |= QStyleOptionButton::HasMenu;
    if (autoDefault() || isDefault())
        opt.features |= QStyleOptionButton::AutoDefaultButton;
    if (isDefault())
        opt.features |= QStyleOptionButton::DefaultButton;
    if (isDown() || (menu() && menu()->isVisible()))
        opt.state |= QStyle::State_Sunken;
    if (isChecked())
        opt.state |= QStyle::State_On;
    if (!isFlat() && !isDown())
        opt.state |= QStyle::State_Raised;
    opt.text = text();
    opt.icon = icon();
    opt.iconSize = iconSize();
    return opt;
}

   void MainWindow::creatbuttons()
   {
       textTop=new GcodeEdit(0);
       textBottom=new QPlainTextEdit(0);
       load=new QPushButton(QString::fromLocal8Bit("载入"),0);
       //count=new QPushButton(QObject::tr("count"),0);
       count=new QPushButton(QString::fromLocal8Bit("计数"),0);
       simulation=new QPushButton(QString::fromLocal8Bit("仿真"),0);
       send=new QPushButton(QString::fromLocal8Bit("发送"),0);
       finish=new QPushButton(QString::fromLocal8Bit("结束"),0);
       compiler=new QPushButton(QString::fromLocal8Bit("编译"),0);

       QSize iconSize(4,4);
       zoomInIcon = new QToolButton;
       zoomInIcon->setAutoRepeat(true);
       zoomInIcon->setAutoRepeatInterval(33);
       zoomInIcon->setAutoRepeatDelay(0);
       //zoomInIcon->setIcon(QPixmap("images//zoomin.png"));
       //zoomInIcon->setIconSize(QPixmap( "images//zoomin.png").size());
       zoomOutIcon = new QToolButton;
       zoomOutIcon->setAutoRepeat(true);
       zoomOutIcon->setAutoRepeatInterval(33);
       zoomOutIcon->setAutoRepeatDelay(0);
       // zoomOutIcon->setIcon(QPixmap(":/File/zoomout.png"));
       //zoomOutIcon->setIconSize(QPixmap("/File/zoomin.png").size());
       zoomSlider = new QSlider;
       zoomSlider->setMinimum(0);
       zoomSlider->setMaximum(500);
       zoomSlider->setValue(250);
       zoomSlider->setTickPosition(QSlider::TicksRight);

       // Zoom slider layout


       QVBoxLayout *zoomSliderLayout = new QVBoxLayout;
       zoomSliderLayout->addWidget(zoomInIcon);
       zoomSliderLayout->addWidget(zoomSlider);
       zoomSliderLayout->addWidget(zoomOutIcon);
       zoomwidget=new QWidget();
       zoomwidget->setLayout(zoomSliderLayout);
       //zoom in out

       selectGroup = new QGroupBox(0);
       //  selectGroup->setTitle(tr("select"));
       selectGroup->setTitle(QString::fromLocal8Bit("选择"));
       zhengjiaoType = new QRadioButton(selectGroup);
       zuijinType = new QRadioButton(selectGroup);
       zidingyiType= new QRadioButton(selectGroup);
       zhengjiaoType->setText(QString::fromLocal8Bit("正交"));
       zuijinType->setText(QString::fromLocal8Bit("最近点选择"));
       zidingyiType->setText(QString::fromLocal8Bit("自定义"));
       selectGroup->adjustSize();
       zhengjiaoType->setChecked(true);
       QVBoxLayout *vbox=new QVBoxLayout;
       vbox->addWidget(zhengjiaoType);
       vbox->addWidget(zuijinType);
       vbox->addWidget(zidingyiType);
       selectGroup->setLayout(vbox);

   }

QSize Tab::sizeHint() const
{
    if (icon().isNull()) {
        return FlatButton::sizeHint();
    } else {
        return QSize(40, iconSize().height() + 46);
    }
}