Ejemplo n.º 1
0
static bool parseDescriptors(const CharType* attribute, Vector<DescriptorToken>& descriptors, DescriptorParsingResult& result)
{
    for (Vector<DescriptorToken>::iterator it = descriptors.begin(); it != descriptors.end(); ++it) {
        if (it->length == 0)
            continue;
        CharType c = attribute[it->lastIndex()];
        bool isValid = false;
        if (RuntimeEnabledFeatures::pictureSizesEnabled() && c == 'w') {
            if (result.hasDensity() || result.hasWidth())
                return false;
            int resourceWidth = it->toInt(attribute, isValid);
            if (!isValid || resourceWidth <= 0)
                return false;
            result.setResourceWidth(resourceWidth);
        } else if (RuntimeEnabledFeatures::pictureSizesEnabled() && c == 'h') {
            // This is here only for future compat purposes.
            // The value of the 'h' descriptor is not used.
            if (result.hasDensity() || result.hasHeight())
                return false;
            int resourceHeight = it->toInt(attribute, isValid);
            if (!isValid || resourceHeight <= 0)
                return false;
            result.setResourceHeight(resourceHeight);
        } else if (c == 'x') {
            if (result.hasDensity() || result.hasHeight() || result.hasWidth())
                return false;
            float density = it->toFloat(attribute, isValid);
            if (!isValid || density < 0)
                return false;
            result.setDensity(density);
        }
    }
    return true;
}
Ejemplo n.º 2
0
static bool parseDescriptors(Vector<StringView>& descriptors, DescriptorParsingResult& result)
{
    for (auto& descriptor : descriptors) {
        if (descriptor.isEmpty())
            continue;
        unsigned descriptorCharPosition = descriptor.length() - 1;
        UChar descriptorChar = descriptor[descriptorCharPosition];
        descriptor = descriptor.substring(0, descriptorCharPosition);
        bool isValid = false;
        if (descriptorChar == 'x') {
            if (result.hasDensity() || result.hasHeight() || result.hasWidth())
                return false;
            float density = descriptor.toFloat(isValid);
            if (!isValid || density < 0)
                return false;
            result.setDensity(density);
        } else if (descriptorChar == 'w') {
#if ENABLE(PICTURE_SIZES)
            if (result.hasDensity() || result.hasWidth())
                return false;
            int resourceWidth = descriptor.toInt(isValid);
            if (!isValid || resourceWidth <= 0)
                return false;
            result.setResourceWidth(resourceWidth);
#else
            return false;
#endif
        } else if (descriptorChar == 'h') {
#if ENABLE(PICTURE_SIZES)
            // This is here only for future compat purposes.
            // The value of the 'h' descriptor is not used.
            if (result.hasDensity() || result.hasHeight())
                return false;
            int resourceHeight = descriptor.toInt(isValid);
            if (!isValid || resourceHeight <= 0)
                return false;
            result.setResourceHeight(resourceHeight);
#else
            return false;
#endif
        }
    }
    return true;
}
static bool parseDescriptors(const CharType* attribute, Vector<DescriptorToken>& descriptors, DescriptorParsingResult& result, Document* document)
{
    for (DescriptorToken& descriptor : descriptors) {
        if (descriptor.length == 0)
            continue;
        CharType c = attribute[descriptor.lastIndex()];
        bool isValid = false;
        if (c == 'w') {
            if (result.hasDensity() || result.hasWidth()) {
                srcsetError(document, "it has multiple 'w' descriptors or a mix of 'x' and 'w' descriptors.");
                return false;
            }
            int resourceWidth = descriptor.toInt(attribute, isValid);
            if (!isValid || resourceWidth <= 0) {
                srcsetError(document, "its 'w' descriptor is invalid.");
                return false;
            }
            result.setResourceWidth(resourceWidth);
        } else if (c == 'h') {
            // This is here only for future compat purposes.
            // The value of the 'h' descriptor is not used.
            if (result.hasDensity() || result.hasHeight()) {
                srcsetError(document, "it has multiple 'h' descriptors or a mix of 'x' and 'h' descriptors.");
                return false;
            }
            int resourceHeight = descriptor.toInt(attribute, isValid);
            if (!isValid || resourceHeight <= 0) {
                srcsetError(document, "its 'h' descriptor is invalid.");
                return false;
            }
            result.setResourceHeight(resourceHeight);
        } else if (c == 'x') {
            if (result.hasDensity() || result.hasHeight() || result.hasWidth()) {
                srcsetError(document, "it has multiple 'x' descriptors or a mix of 'x' and 'w'/'h' descriptors.");
                return false;
            }
            float density = descriptor.toFloat(attribute, isValid);
            if (!isValid || density < 0) {
                srcsetError(document, "its 'x' descriptor is invalid.");
                return false;
            }
            result.setDensity(density);
        } else {
            srcsetError(document, "it has an unknown descriptor.");
            return false;
        }
    }
    bool res = !result.hasHeight() || result.hasWidth();
    if (!res)
        srcsetError(document, "it has an 'h' descriptor and no 'w' descriptor.");
    return res;
}