Пример #1
0
void RenderMenuList::updateOptionsWidth()
{
    float maxOptionWidth = 0;
    const Vector<Element*>& listItems = toSelectElement(static_cast<Element*>(node()))->listItems();
    int size = listItems.size();    
    FontCachePurgePreventer fontCachePurgePreventer;

    for (int i = 0; i < size; ++i) {
        Element* element = listItems[i];
        OptionElement* optionElement = toOptionElement(element);
        if (!optionElement)
            continue;

        String text = optionElement->textIndentedToRespectGroupLabel();
        if (theme()->popupOptionSupportsTextIndent()) {
            // Add in the option's text indent.  We can't calculate percentage values for now.
            float optionWidth = 0;
            if (RenderStyle* optionStyle = element->renderStyle())
                optionWidth += optionStyle->textIndent().calcMinValue(0);
            if (!text.isEmpty())
                optionWidth += style()->font().width(text);
            maxOptionWidth = max(maxOptionWidth, optionWidth);
        } else if (!text.isEmpty())
            maxOptionWidth = max(maxOptionWidth, style()->font().width(text));
    }

    int width = static_cast<int>(ceilf(maxOptionWidth));
    if (m_optionsWidth == width)
        return;

    m_optionsWidth = width;
    if (parent())
        setNeedsLayoutAndPrefWidthsRecalc();
}
Пример #2
0
void SelectElement::typeAheadFind(SelectElementData& data, Element* element, KeyboardEvent* event)
{
    if (event->timeStamp() < data.lastCharTime())
        return;

    DOMTimeStamp delta = event->timeStamp() - data.lastCharTime();
    data.setLastCharTime(event->timeStamp());

    UChar c = event->charCode();

    String prefix;
    int searchStartOffset = 1;
    if (delta > typeAheadTimeout) {
        prefix = String(&c, 1);
        data.setTypedString(prefix);
        data.setRepeatingChar(c);
    } else {
        data.typedString().append(c);

        if (c == data.repeatingChar())
            // The user is likely trying to cycle through all the items starting with this character, so just search on the character
            prefix = String(&c, 1);
        else {
            data.setRepeatingChar(0);
            prefix = data.typedString();
            searchStartOffset = 0;
        }
    }

    const Vector<Element*>& items = data.listItems(element);
    int itemCount = items.size();
    if (itemCount < 1)
        return;

    int selected = selectedIndex(data, element);
    int index = (optionToListIndex(data, element, selected >= 0 ? selected : 0) + searchStartOffset) % itemCount;
    ASSERT(index >= 0);

    for (int i = 0; i < itemCount; ++i, index = (index + 1) % itemCount) {
        OptionElement* optionElement = toOptionElement(items[index]);
        if (!optionElement || items[index]->disabled())
            continue;

        String text = optionElement->textIndentedToRespectGroupLabel();
        if (stripLeadingWhiteSpace(text).startsWith(prefix, false)) {
            setSelectedIndex(data, element, listToOptionIndex(data, element, index));
            if (!data.usesMenuList())
                listBoxOnChange(data, element);
            element->setNeedsStyleRecalc();
            return;
        }
    }
}
Пример #3
0
void RenderListBox::paintItemForeground(PaintInfo& paintInfo, int tx, int ty, int listIndex)
{
    SelectElement* select = toSelectElement(static_cast<Element*>(node()));
    const Vector<Element*>& listItems = select->listItems();
    Element* element = listItems[listIndex];
    OptionElement* optionElement = toOptionElement(element);

    String itemText;
    if (optionElement)
        itemText = optionElement->textIndentedToRespectGroupLabel();
    else if (OptionGroupElement* optionGroupElement = toOptionGroupElement(element))
        itemText = optionGroupElement->groupLabelText();      

    // Determine where the item text should be placed
    IntRect r = itemBoundingBoxRect(tx, ty, listIndex);
    r.move(optionsSpacingHorizontal, style()->font().ascent());

    RenderStyle* itemStyle = element->renderStyle();
    if (!itemStyle)
        itemStyle = style();
    
    Color textColor = element->renderStyle() ? element->renderStyle()->color() : style()->color();
    if (optionElement && optionElement->selected()) {
        if (document()->frame()->selection()->isFocusedAndActive() && document()->focusedNode() == node())
            textColor = theme()->activeListBoxSelectionForegroundColor();
        // Honor the foreground color for disabled items
        else if (!element->disabled())
            textColor = theme()->inactiveListBoxSelectionForegroundColor();
    }

    ColorSpace colorSpace = itemStyle->colorSpace();
    paintInfo.context->setFillColor(textColor, colorSpace);

    Font itemFont = style()->font();
    if (isOptionGroupElement(element)) {
        FontDescription d = itemFont.fontDescription();
        d.setWeight(d.bolderWeight());
        itemFont = Font(d, itemFont.letterSpacing(), itemFont.wordSpacing());
        itemFont.update(document()->styleSelector()->fontSelector());
    }

    unsigned length = itemText.length();
    const UChar* string = itemText.characters();
    TextRun textRun(string, length, 0, 0, 0, itemStyle->direction() == RTL, itemStyle->unicodeBidi() == Override, false, false);

    // Draw the item text
    if (itemStyle->visibility() != HIDDEN)
        paintInfo.context->drawBidiText(itemFont, textRun, r.location());
}