void StyleBuilderFunctions::applyValueCSSPropertyZoom(StyleResolverState& state, CSSValue* value)
{
ASSERT_WITH_SECURITY_IMPLICATION(value->isPrimitiveValue());
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
if (primitiveValue->getValueID() == CSSValueNormal) {
resetEffectiveZoom(state);
state.setZoom(ComputedStyle::initialZoom());
} else if (primitiveValue->getValueID() == CSSValueReset) {
state.setEffectiveZoom(ComputedStyle::initialZoom());
state.setZoom(ComputedStyle::initialZoom());
} else if (primitiveValue->getValueID() == CSSValueDocument) {
float docZoom = state.rootElementStyle() ? state.rootElementStyle()->zoom() : ComputedStyle::initialZoom();
state.setEffectiveZoom(docZoom);
state.setZoom(docZoom);
} else if (primitiveValue->isPercentage()) {
resetEffectiveZoom(state);
if (float percent = primitiveValue->getFloatValue())
state.setZoom(percent / 100.0f);
} else if (primitiveValue->isNumber()) {
resetEffectiveZoom(state);
if (float number = primitiveValue->getFloatValue())
state.setZoom(number);
}
}
static void resetEffectiveZoom(StyleResolverState& state)
{
// Reset the zoom in effect. This allows the setZoom method to accurately compute a new zoom in effect.
state.setEffectiveZoom(state.parentStyle() ? state.parentStyle()->effectiveZoom() : ComputedStyle::initialZoom());
}