コード例 #1
0
ファイル: PopupContainer.cpp プロジェクト: ragner/webkit
IntRect PopupContainer::layoutAndCalculateWidgetRect(int targetControlHeight, const IntPoint& popupInitialCoordinate)
{
    // Reset the max width and height to their default values, they will be recomputed below
    // if necessary.
    m_listBox->setMaxHeight(kMaxHeight);
    m_listBox->setMaxWidth(std::numeric_limits<int>::max());

    // Lay everything out to figure out our preferred size, then tell the view's
    // WidgetClient about it. It should assign us a client.
    int rtlOffset = layoutAndGetRTLOffset();
    bool isRTL = this->isRTL();
    int rightOffset = isRTL ? rtlOffset : 0;

    // Assume m_listBox size is already calculated.
    IntSize targetSize(m_listBox->width() + kBorderSize * 2,
                       m_listBox->height() + kBorderSize * 2);

    IntRect widgetRectInScreen;
    ChromeClientChromium* chromeClient = chromeClientChromium();
    if (chromeClient) {
        // If the popup would extend past the bottom of the screen, open upwards
        // instead.
        FloatRect screen = screenAvailableRect(m_frameView.get());
        // Use popupInitialCoordinate.x() + rightOffset because RTL position
        // needs to be considered.
        widgetRectInScreen = chromeClient->rootViewToScreen(IntRect(popupInitialCoordinate.x() + rightOffset, popupInitialCoordinate.y(), targetSize.width(), targetSize.height()));

        // If we have multiple screens and the browser rect is in one screen, we have
        // to clip the window width to the screen width.
        // When clipping, we also need to set a maximum width for the list box.
        FloatRect windowRect = chromeClient->windowRect();

        bool needToResizeView = false;
        widgetRectInScreen = layoutAndCalculateWidgetRectInternal(widgetRectInScreen, targetControlHeight, windowRect, screen, isRTL, rtlOffset, m_listBox.get(), needToResizeView);
        if (needToResizeView)
            fitToListBox();
    }

    return widgetRectInScreen;
}
コード例 #2
0
IntRect PopupContainer::layoutAndCalculateWidgetRect(int targetControlHeight, const IntPoint& popupInitialCoordinate)
{
    // Reset the max width and height to their default values, they will be recomputed below
    // if necessary.
    m_listBox->setMaxHeight(kMaxHeight);
    m_listBox->setMaxWidth(std::numeric_limits<int>::max());

    // Lay everything out to figure out our preferred size, then tell the view's
    // WidgetClient about it. It should assign us a client.
    int rtlOffset = layoutAndGetRTLOffset();
    bool isRTL = this->isRTL();
    int rightOffset = isRTL ? rtlOffset : 0;

    // Assume m_listBox size is already calculated.
    IntSize targetSize(m_listBox->width() + kBorderSize * 2,
                       m_listBox->height() + kBorderSize * 2);

    IntRect widgetRect;
    ChromeClientChromium* chromeClient = chromeClientChromium();
    if (chromeClient) {
        // If the popup would extend past the bottom of the screen, open upwards
        // instead.
        FloatRect screen = screenAvailableRect(m_frameView.get());
        // Use popupInitialCoordinate.x() + rightOffset because RTL position
        // needs to be considered.
        widgetRect = chromeClient->rootViewToScreen(IntRect(popupInitialCoordinate.x() + rightOffset, popupInitialCoordinate.y(), targetSize.width(), targetSize.height()));

        // If we have multiple screens and the browser rect is in one screen, we have
        // to clip the window width to the screen width.
        // When clipping, we also need to set a maximum width for the list box.
        FloatRect windowRect = chromeClient->windowRect();
        if (windowRect.x() >= screen.x() && windowRect.maxX() <= screen.maxX() && (widgetRect.x() < screen.x() || widgetRect.maxX() > screen.maxX())) {
            // First, inverse the popup alignment if it does not fit the screen - this might fix things (or make them better).
            IntRect inverseWidgetRect = chromeClient->rootViewToScreen(IntRect(popupInitialCoordinate.x() + (isRTL ? 0 : rtlOffset), popupInitialCoordinate.y(), targetSize.width(), targetSize.height()));
            IntRect enclosingScreen = enclosingIntRect(screen);
            unsigned originalCutoff = max(enclosingScreen.x() - widgetRect.x(), 0) + max(widgetRect.maxX() - enclosingScreen.maxX(), 0);
            unsigned inverseCutoff = max(enclosingScreen.x() - inverseWidgetRect.x(), 0) + max(inverseWidgetRect.maxX() - enclosingScreen.maxX(), 0);

            // Accept the inverse popup alignment if the trimmed content gets shorter than that in the original alignment case.
            if (inverseCutoff < originalCutoff)
                widgetRect = inverseWidgetRect;

            if (widgetRect.x() < screen.x()) {
                unsigned widgetRight = widgetRect.maxX();
                widgetRect.setWidth(widgetRect.maxX() - screen.x());
                widgetRect.setX(widgetRight - widgetRect.width());
                listBox()->setMaxWidthAndLayout(max(widgetRect.width() - kBorderSize * 2, 0));
            } else if (widgetRect.maxX() > screen.maxX()) {
                widgetRect.setWidth(screen.maxX() - widgetRect.x());
                listBox()->setMaxWidthAndLayout(max(widgetRect.width() - kBorderSize * 2, 0));
            }
        }

        // Calculate Y axis size.
        if (widgetRect.maxY() > static_cast<int>(screen.maxY())) {
            if (widgetRect.y() - widgetRect.height() - targetControlHeight > 0) {
                // There is enough room to open upwards.
                widgetRect.move(0, -(widgetRect.height() + targetControlHeight));
            } else {
                // Figure whether upwards or downwards has more room and set the
                // maximum number of items.
                int spaceAbove = widgetRect.y() - targetControlHeight;
                int spaceBelow = screen.maxY() - widgetRect.y();
                if (spaceAbove > spaceBelow)
                    m_listBox->setMaxHeight(spaceAbove);
                else
                    m_listBox->setMaxHeight(spaceBelow);
                layoutAndGetRTLOffset();
                // Our height has changed, so recompute only Y axis of widgetRect.
                // We don't have to recompute X axis, so we only replace Y axis
                // in widgetRect.
                IntRect frameInScreen = chromeClient->rootViewToScreen(frameRect());
                widgetRect.setY(frameInScreen.y());
                widgetRect.setHeight(frameInScreen.height());
                // And move upwards if necessary.
                if (spaceAbove > spaceBelow)
                    widgetRect.move(0, -(widgetRect.height() + targetControlHeight));
            }
        }
    }
    return widgetRect;
}