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;
}
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;
}