C++ LengthBox类代码示例

void CSSToStyleMap::mapNinePieceImageSlice(CSSValue& value, NinePieceImage& image)
{
    if (!is<CSSBorderImageSliceValue>(value))
        return;

    // Retrieve the border image value.
    auto& borderImageSlice = downcast<CSSBorderImageSliceValue>(value);

    // Set up a length box to represent our image slices.
    LengthBox box;
    Quad* slices = borderImageSlice.slices();
    if (slices->top()->isPercentage())
        box.top() = Length(slices->top()->getDoubleValue(), Percent);
    else
        box.top() = Length(slices->top()->getIntValue(CSSPrimitiveValue::CSS_NUMBER), Fixed);
    if (slices->bottom()->isPercentage())
        box.bottom() = Length(slices->bottom()->getDoubleValue(), Percent);
    else
        box.bottom() = Length((int)slices->bottom()->getFloatValue(CSSPrimitiveValue::CSS_NUMBER), Fixed);
    if (slices->left()->isPercentage())
        box.left() = Length(slices->left()->getDoubleValue(), Percent);
    else
        box.left() = Length(slices->left()->getIntValue(CSSPrimitiveValue::CSS_NUMBER), Fixed);
    if (slices->right()->isPercentage())
        box.right() = Length(slices->right()->getDoubleValue(), Percent);
    else
        box.right() = Length(slices->right()->getIntValue(CSSPrimitiveValue::CSS_NUMBER), Fixed);
    image.setImageSlices(box);

    // Set our fill mode.
    image.setFill(borderImageSlice.m_fill);
}

bool positionedObjectMoved(const LengthBox& a, const LengthBox& b)
{
    // If any unit types are different, then we can't guarantee
    // that this was just a movement.
    if (a.left().type() != b.left().type() ||
        a.right().type() != b.right().type() ||
        a.top().type() != b.top().type() ||
        a.bottom().type() != b.bottom().type())
        return false;

    // Only one unit can be non-auto in the horizontal direction and
    // in the vertical direction.  Otherwise the adjustment of values
    // is changing the size of the box.
    if (!a.left().isIntrinsicOrAuto() && !a.right().isIntrinsicOrAuto())
        return false;
    if (!a.top().isIntrinsicOrAuto() && !a.bottom().isIntrinsicOrAuto())
        return false;

    // One of the units is fixed or percent in both directions and stayed
    // that way in the new style.  Therefore all we are doing is moving.
    return true;
}

LengthBox CSSToStyleMap::mapNinePieceImageQuad(CSSValue& value)
{
    if (!is<CSSPrimitiveValue>(value))
        return LengthBox();

    // Get our zoom value.
    CSSToLengthConversionData conversionData = useSVGZoomRules() ? m_resolver->state().cssToLengthConversionData().copyWithAdjustedZoom(1.0f) : m_resolver->state().cssToLengthConversionData();

    // Retrieve the primitive value.
    auto& borderWidths = downcast<CSSPrimitiveValue>(value);

    // Set up a length box to represent our image slices.
    LengthBox box; // Defaults to 'auto' so we don't have to handle that explicitly below.
    Quad* slices = borderWidths.getQuadValue();
    if (slices->top()->isNumber())
        box.top() = Length(slices->top()->getIntValue(), Relative);
    else if (slices->top()->isPercentage())
        box.top() = Length(slices->top()->getDoubleValue(CSSPrimitiveValue::CSS_PERCENTAGE), Percent);
    else if (slices->top()->getValueID() != CSSValueAuto)
        box.top() = slices->top()->computeLength<Length>(conversionData);

    if (slices->right()->isNumber())
        box.right() = Length(slices->right()->getIntValue(), Relative);
    else if (slices->right()->isPercentage())
        box.right() = Length(slices->right()->getDoubleValue(CSSPrimitiveValue::CSS_PERCENTAGE), Percent);
    else if (slices->right()->getValueID() != CSSValueAuto)
        box.right() = slices->right()->computeLength<Length>(conversionData);

    if (slices->bottom()->isNumber())
        box.bottom() = Length(slices->bottom()->getIntValue(), Relative);
    else if (slices->bottom()->isPercentage())
        box.bottom() = Length(slices->bottom()->getDoubleValue(CSSPrimitiveValue::CSS_PERCENTAGE), Percent);
    else if (slices->bottom()->getValueID() != CSSValueAuto)
        box.bottom() = slices->bottom()->computeLength<Length>(conversionData);

    if (slices->left()->isNumber())
        box.left() = Length(slices->left()->getIntValue(), Relative);
    else if (slices->left()->isPercentage())
        box.left() = Length(slices->left()->getDoubleValue(CSSPrimitiveValue::CSS_PERCENTAGE), Percent);
    else if (slices->left()->getValueID() != CSSValueAuto)
        box.left() = slices->left()->computeLength<Length>(conversionData);

    return box;
}