C++ QBrush::setMatrix方法代码示例

void TCellViewItemDelegate::paint(QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index) const
{
    Q_ASSERT(index.isValid());
    const QAbstractItemModel *model = index.model();
    Q_ASSERT(model);

    QVariant value;

    QStyleOptionViewItem opt = option;

    // do layout
    QImage img = qvariant_cast<QImage>(model->data(index,Qt::DisplayRole));

    if (! img.isNull())
        painter->drawImage(opt.rect, img);

    // draw the background color
    value = model->data(index, Qt::BackgroundColorRole);

    if (value.isValid()) {
        QBrush brush = qvariant_cast<QBrush>(value);
        if (brush.gradient()) {
            QMatrix m;
            m.translate(option.rect.topLeft().x(), option.rect.topLeft().y());
            m.scale((float)(option.rect.width())/100.0 , (float)(option.rect.height())/100.0);
            brush.setMatrix(m);
            painter->fillRect(option.rect, brush);
        } else {
            painter->fillRect(option.rect, brush);
        }
    }

    // Selection!
    if (option.showDecorationSelected && (option.state & QStyle::State_Selected)) {
        QPalette::ColorGroup cg = option.state & QStyle::State_Enabled ? QPalette::Normal : QPalette::Disabled;
        painter->save();
        painter->setPen(QPen(option.palette.brush(cg, QPalette::Highlight), 3));
        painter->drawRect(option.rect.adjusted(1,1,-2,-2));
        painter->restore();
    }
}

//.........这里部分代码省略.........
        close_button_->setSizePolicy(sizePolicy2);
        close_button_->setProperty("CloseButton", QVariant(true));
        horizontal_layout_->addWidget(close_button_);
        vertical_layout_->addWidget(title_widget_);
        stacked_widget_ = new BackgroundWidget(main_widget_, "");
        stacked_widget_->setObjectName(QStringLiteral("stacked_widget"));

        QPixmap p(":/resources/main_window/pat_100.png");
        setBackgroundPixmap(p, true);

        //Utils::InterConnector::instance().setMainWindow(this);
        get_qt_theme_settings()->setOrLoadDefaultTheme();
        vertical_layout_->addWidget(stacked_widget_);
        this->setCentralWidget(main_widget_);

        logo_->setText(QString());
        hide_button_->setText(QString());
        maximize_button_->setText(QString());
        close_button_->setText(QString());

        stacked_widget_->setCurrentIndex(-1);
        QMetaObject::connectSlotsByName(this);

        if (!get_gui_settings()->get_value(settings_keep_logged_in, true))// || !get_gui_settings()->contains_value(settings_keep_logged_in))
        {
            showLoginPage();
        }
        else
        {
            showMainPage();
        }

		title_widget_->installEventFilter(event_filter_);
		title_->setText("ICQ");
		title_->setAttribute(Qt::WA_TransparentForMouseEvents);
		logo_->setAttribute(Qt::WA_TransparentForMouseEvents);

		setWindowTitle("ICQ");
#ifdef _WIN32
        setWindowFlags(Qt::Window | Qt::FramelessWindowHint | Qt::NoDropShadowWindowHint | Qt::WindowMinimizeButtonHint);
        fake_parent_window_ = Utils::create_fake_parent_window();
#else
        title_widget_->hide();
#endif

		title_->setMouseTracking(true);

		connect(hide_button_, SIGNAL(clicked()), this, SLOT(minimize()), Qt::QueuedConnection);
		connect(maximize_button_, SIGNAL(clicked()), this, SLOT(maximize()), Qt::QueuedConnection);
		connect(close_button_, SIGNAL(clicked()), this, SLOT(hideWindow()), Qt::QueuedConnection);

		hide_button_->setCursor(Qt::PointingHandCursor);
		maximize_button_->setCursor(Qt::PointingHandCursor);
		close_button_->setCursor(Qt::PointingHandCursor);

		connect(event_filter_, SIGNAL(doubleClick()), this, SLOT(maximize()), Qt::QueuedConnection);
		connect(event_filter_, SIGNAL(moveRequest(QPoint)), this, SLOT(moveRequest(QPoint)), Qt::QueuedConnection);

        connect(&Ui::GetDispatcher()->getVoipController(), SIGNAL(onVoipResetComplete()), this, SLOT(onVoipResetComplete()), Qt::QueuedConnection);

		connect(Ui::GetDispatcher(), SIGNAL(needLogin()), this, SLOT(showLoginPage()), Qt::DirectConnection);
		connect(&Utils::InterConnector::instance(), SIGNAL(showIconInTaskbar(bool)), this, SLOT(showIconInTaskbar(bool)), Qt::QueuedConnection);

        connect(this, SIGNAL(needActivate()), this, SLOT(activate()), Qt::QueuedConnection);

        connect(get_gui_settings(), SIGNAL(changed(QString)), this, SLOT(guiSettingsChanged(QString)), Qt::QueuedConnection);

		QFont f = QApplication::font();
		f.setStyleStrategy(QFont::PreferAntialias);
		QApplication::setFont(f);

        if (platform::is_windows())
        {
            int shadowWidth = get_gui_settings()->get_shadow_width();
            QBrush b = stacked_widget_->palette().background();
            QMatrix m;
            m.translate(shadowWidth, title_widget_->height() + shadowWidth);
            b.setMatrix(m);
            Shadow_ = new ShadowWindow(b, shadowWidth);
            QPoint pos = mapToGlobal(QPoint(rect().x(), rect().y()));
            Shadow_->move(pos.x(), pos.y());
            Shadow_->resize(rect().width(), rect().height());
            Shadow_->setActive(true);
            Shadow_->show();
        }

        initSettings();
#ifdef _WIN32
        DragAcceptFiles((HWND)winId(), TRUE);
#endif //_WIN32

        if (!get_gui_settings()->get_value<bool>(settings_show_in_taskbar, true))
            hide_taskbar_icon();

#ifdef __APPLE__
        mac_support_->enableMacUpdater();
        mac_support_->enableMacPreview(this->winId());
#endif

	}