C++ QBitmap::rect方法代码示例

void rectangle::paintEvent(QPaintEvent *)
{
    QBitmap bmp (this->rect().width(), this->height());
    QPainter paint(&bmp);
    QPen pen(Qt::black);
    pen.setWidth(4);
    paint.setPen(pen);
    paint.setBrush(Qt::white);
    paint.drawRect(1,1,bmp.rect().width()-2, bmp.rect().height()-2);
    this->setMask(bmp);
    bmp.save("c:/1.bmp");
}

//!
//! Constructor of the ParameterTypeIcon class.
//!
//! \param color The color for the parameter type icon.
//!
ParameterTypeIcon::ParameterTypeIcon ( const QColor &color )
{
    m_color = color;

    const QRect pinRect (0, 4, 15, 8);
    const QColor penColor (109, 109, 109);
    QPixmap normalPixmap (16, 16);
    QPainter painter;
    if (painter.begin(&normalPixmap)) {
        // get the background color from the application style's standard palette
        QColor backgroundColor = QApplication::style()->standardPalette().color(QPalette::Base);
        // fill the pixmap with the background color
        painter.fillRect(normalPixmap.rect(), QBrush(backgroundColor));
        // draw the pin rect into the pixmap
        painter.setPen(QPen(penColor));
        painter.setBrush(QBrush(m_color));
        painter.drawRoundRect(pinRect);
        // end painting the pixmap
        if (painter.end()) {
            // create a bitmap for masking the pixmap
            QBitmap maskBitmap (normalPixmap.size());
            if (painter.begin(&maskBitmap)) {
                // fill the bitmap with white (meaning transparent)
                painter.fillRect(maskBitmap.rect(), QBrush(QColor(Qt::white)));
                // draw the pin rect as black (meaning opaque)
                painter.setPen(QPen(QColor(Qt::black)));
                painter.setBrush(QBrush(QColor(Qt::black)));
                painter.drawRoundRect(pinRect);
                // end painting the bitmap and set it as mask for the pixmap
                if (painter.end())
                    normalPixmap.setMask(maskBitmap);
            }
        }
    }
    // add the pixmap to the icon
    addPixmap(normalPixmap);
}

void QWaylandMaterialDecoration::paint(QPaintDevice *device)
{
    const QRect frameGeometry = window()->frameGeometry();
    QRect top(QPoint(WINDOW_BORDER, WINDOW_BORDER), QSize(frameGeometry.width(), margins().top()));

    QPainter p(device);
    p.setRenderHint(QPainter::Antialiasing);

    // Title bar
    int radius = waylandWindow()->isMaximized() ? 0 : dp(3);
    QPainterPath roundedRect;
    roundedRect.addRoundedRect(0, 0, frameGeometry.width(), margins().top() * 1.5,
                               radius, radius);
    p.fillPath(roundedRect.simplified(), m_backgroundColor);

    // Borders
    QPainterPath borderPath;
    borderPath.addRect(0, margins().top(), margins().left(), frameGeometry.height() - margins().top());
    borderPath.addRect(0, frameGeometry.height() - margins().bottom(), frameGeometry.width(), margins().bottom());
    borderPath.addRect(frameGeometry.width() - margins().right(), margins().top(), margins().right(), frameGeometry.height() - margins().bottom());
    p.fillPath(borderPath, m_backgroundColor);

    // Window title
    QString windowTitleText = window()->title();
    if (!windowTitleText.isEmpty()) {
        if (m_windowTitle.text() != windowTitleText) {
            m_windowTitle.setText(windowTitleText);
            m_windowTitle.prepare();
        }

        QRect titleBar = top;
        titleBar.setLeft(margins().left() + BUTTON_SPACING);
        titleBar.setRight(minimizeButtonRect().left() - BUTTON_SPACING);

        p.save();
        p.setClipRect(titleBar);
        p.setPen(m_textColor);
        QSizeF size = m_windowTitle.size();
        int dx = (top.width() - size.width()) / 2;
        int dy = (top.height() - size.height()) / 2;
        QFont font = p.font();
        font.setBold(true);
        font.setFamily("Roboto");
        p.setFont(font);
        QPoint windowTitlePoint(top.topLeft().x() + dx, top.topLeft().y() + dy);
        p.drawStaticText(windowTitlePoint, m_windowTitle);
        p.restore();
    }

    p.save();
    p.setPen(m_iconColor);

    // Close button
    QBitmap closeIcon = buttonIcon("window-close");
    p.drawPixmap(closeButtonRect(), closeIcon, closeIcon.rect());

    // Maximize button
    if (window()->flags() & Qt::WindowMaximizeButtonHint) {
        QBitmap maximizeIcon =
                buttonIcon(waylandWindow()->isMaximized() ? "window-restore" : "window-maximize");
        p.drawPixmap(maximizeButtonRect(), maximizeIcon, maximizeIcon.rect());
    }

    // Minimize button
    if (window()->flags() & Qt::WindowMinimizeButtonHint) {
        QBitmap minimizeIcon = buttonIcon("window-minimize");
        p.drawPixmap(minimizeButtonRect(), minimizeIcon, minimizeIcon.rect());
    }

    p.restore();
}

void QWaylandMaterialDecoration::paint(QPaintDevice *device)
{
    QRect surfaceRect(QPoint(), window()->frameGeometry().size());
    QRect top(QPoint(), QSize(window()->frameGeometry().width(), margins().top()));

    QPainter p(device);
    p.setRenderHint(QPainter::Antialiasing);

    // Title bar
    int radius = waylandWindow()->isMaximized() ? 0 : dp(3);
    QPainterPath roundedRect;
    roundedRect.addRoundedRect(0, 0, window()->frameGeometry().width(), margins().top() * 1.5,
                               radius, radius);

    p.fillPath(roundedRect.simplified(), m_backgroundColor);

    // Window icon
    QIcon icon = waylandWindow()->windowIcon();
    if (!icon.isNull()) {
        QPixmap pixmap = icon.pixmap(QSize(128, 128));
        QPixmap scaled = pixmap.scaled(22, 22, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);

        QRectF iconRect(0, 0, 22, 22);
        p.drawPixmap(iconRect.adjusted(margins().left() + BUTTON_SPACING, 4,
                                       margins().left() + BUTTON_SPACING, 4),
                     scaled, iconRect);
    }

    // Window title
    QString windowTitleText = window()->title();
    if (!windowTitleText.isEmpty()) {
        if (m_windowTitle.text() != windowTitleText) {
            m_windowTitle.setText(windowTitleText);
            m_windowTitle.prepare();
        }

        QRect titleBar = top;
        titleBar.setLeft(margins().left() + BUTTON_SPACING +
                         (icon.isNull() ? 0 : 22 + BUTTON_SPACING));
        titleBar.setRight(minimizeButtonRect().left() - BUTTON_SPACING);

        p.save();
        p.setClipRect(titleBar);
        p.setPen(m_textColor);
        QSizeF size = m_windowTitle.size();
        int dx = (top.width() - size.width()) / 2;
        int dy = (top.height() - size.height()) / 2;
        QFont font = p.font();
        font.setBold(true);
        font.setFamily("Roboto");
        p.setFont(font);
        QPoint windowTitlePoint(top.topLeft().x() + dx, top.topLeft().y() + dy);
        p.drawStaticText(windowTitlePoint, m_windowTitle);
        p.restore();
    }

    p.save();
    p.setPen(m_iconColor);

    // Close button
    QBitmap closeIcon = buttonIcon("window-close");
    p.drawPixmap(closeButtonRect(), closeIcon, closeIcon.rect());

    // Maximize button
    QBitmap maximizeIcon =
            buttonIcon(waylandWindow()->isMaximized() ? "window-restore" : "window-maximize");
    p.drawPixmap(maximizeButtonRect(), maximizeIcon, maximizeIcon.rect());

    // Minimize button
    QBitmap minimizeIcon = buttonIcon("window-minimize");
    p.drawPixmap(minimizeButtonRect(), minimizeIcon, minimizeIcon.rect());

    p.restore();
}