void SliderThumbElement::setPositionFromPoint(const IntPoint& point)
{
HTMLInputElement* input = hostInput();
ASSERT(input);
if (!input->renderer() || !renderer())
return;
IntPoint offset = roundedIntPoint(input->renderer()->absoluteToLocal(point, false, true));
RenderStyle* sliderStyle = input->renderer()->style();
bool isVertical = sliderStyle->appearance() == SliderVerticalPart || sliderStyle->appearance() == MediaVolumeSliderPart;
int trackSize;
int position;
int currentPosition;
if (isVertical) {
trackSize = input->renderBox()->contentHeight() - renderBox()->height();
position = offset.y() - renderBox()->height() / 2;
currentPosition = renderBox()->y() - input->renderBox()->contentBoxRect().y();
} else {
trackSize = input->renderBox()->contentWidth() - renderBox()->width();
position = offset.x() - renderBox()->width() / 2;
currentPosition = renderBox()->x() - input->renderBox()->contentBoxRect().x();
}
position = max(0, min(position, trackSize));
if (position == currentPosition)
return;
StepRange range(input);
double fraction = static_cast<double>(position) / trackSize;
if (isVertical)
fraction = 1 - fraction;
double value = range.clampValue(range.valueFromProportion(fraction));
// FIXME: This is no longer being set from renderer. Consider updating the method name.
input->setValueFromRenderer(serializeForNumberType(value));
renderer()->setNeedsLayout(true);
input->dispatchFormControlChangeEvent();
}
void RenderSlider::setValueForPosition(int position)
{
if (!m_thumb || !m_thumb->renderer())
return;
HTMLInputElement* element = static_cast<HTMLInputElement*>(node());
// Calculate the new value based on the position, and send it to the element.
StepRange range(element);
double fraction = static_cast<double>(position) / trackSize();
if (style()->appearance() == SliderVerticalPart || style()->appearance() == MediaVolumeSliderPart)
fraction = 1 - fraction;
double value = range.clampValue(range.valueFromProportion(fraction));
element->setValueFromRenderer(serializeForNumberType(value));
// Also update the position if appropriate.
if (position != currentPosition()) {
setNeedsLayout(true);
// FIXME: It seems like this could send extra change events if the same value is set
// multiple times with no layout in between.
element->dispatchFormControlChangeEvent();
}
}
String NumberInputType::serialize(const Decimal& value) const
{
if (!value.isFinite())
return String();
return serializeForNumberType(value);
}
String RangeInputType::sanitizeValue(const String& proposedValue) const
{
StepRange stepRange(createStepRange(RejectAny));
const Decimal proposedNumericValue = parseToNumber(proposedValue, stepRange.defaultValue());
return serializeForNumberType(stepRange.clampValue(proposedNumericValue));
}
String RangeInputType::fallbackValue() const
{
return serializeForNumberType(createStepRange(RejectAny).defaultValue());
}
void NumberInputType::setValueAsDecimal(const Decimal& newValue, TextFieldEventBehavior eventBehavior, ExceptionState& exceptionState) const
{
element().setValue(serializeForNumberType(newValue), eventBehavior);
}
void SliderThumbElement::setPositionFromPoint(const LayoutPoint& point) {
HTMLInputElement* input(hostInput());
Element* trackElement = input->userAgentShadowRoot()->getElementById(
ShadowElementNames::sliderTrack());
if (!input->layoutObject() || !layoutBox() || !trackElement->layoutBox())
return;
LayoutPoint offset = LayoutPoint(
input->layoutObject()->absoluteToLocal(FloatPoint(point), UseTransforms));
bool isVertical = hasVerticalAppearance(input);
bool isLeftToRightDirection = layoutBox()->style()->isLeftToRightDirection();
LayoutUnit trackSize;
LayoutUnit position;
LayoutUnit currentPosition;
// We need to calculate currentPosition from absolute points becaue the
// layoutObject for this node is usually on a layer and layoutBox()->x() and
// y() are unusable.
// FIXME: This should probably respect transforms.
LayoutPoint absoluteThumbOrigin =
layoutBox()->absoluteBoundingBoxRectIgnoringTransforms().location();
LayoutPoint absoluteSliderContentOrigin =
LayoutPoint(input->layoutObject()->localToAbsolute());
IntRect trackBoundingBox =
trackElement->layoutObject()->absoluteBoundingBoxRectIgnoringTransforms();
IntRect inputBoundingBox =
input->layoutObject()->absoluteBoundingBoxRectIgnoringTransforms();
if (isVertical) {
trackSize = trackElement->layoutBox()->contentHeight() -
layoutBox()->size().height();
position = offset.y() - layoutBox()->size().height() / 2 -
trackBoundingBox.y() + inputBoundingBox.y() -
layoutBox()->marginBottom();
currentPosition = absoluteThumbOrigin.y() - absoluteSliderContentOrigin.y();
} else {
trackSize =
trackElement->layoutBox()->contentWidth() - layoutBox()->size().width();
position = offset.x() - layoutBox()->size().width() / 2 -
trackBoundingBox.x() + inputBoundingBox.x();
position -= isLeftToRightDirection ? layoutBox()->marginLeft()
: layoutBox()->marginRight();
currentPosition = absoluteThumbOrigin.x() - absoluteSliderContentOrigin.x();
}
position = std::min(position, trackSize).clampNegativeToZero();
const Decimal ratio =
Decimal::fromDouble(static_cast<double>(position) / trackSize);
const Decimal fraction =
isVertical || !isLeftToRightDirection ? Decimal(1) - ratio : ratio;
StepRange stepRange(input->createStepRange(RejectAny));
Decimal value = stepRange.clampValue(stepRange.valueFromProportion(fraction));
Decimal closest = input->findClosestTickMarkValue(value);
if (closest.isFinite()) {
double closestFraction = stepRange.proportionFromValue(closest).toDouble();
double closestRatio = isVertical || !isLeftToRightDirection
? 1.0 - closestFraction
: closestFraction;
LayoutUnit closestPosition(trackSize * closestRatio);
const LayoutUnit snappingThreshold(5);
if ((closestPosition - position).abs() <= snappingThreshold)
value = closest;
}
String valueString = serializeForNumberType(value);
if (valueString == input->value())
return;
// FIXME: This is no longer being set from renderer. Consider updating the
// method name.
input->setValueFromRenderer(valueString);
if (layoutObject())
layoutObject()->setNeedsLayoutAndFullPaintInvalidation(
LayoutInvalidationReason::SliderValueChanged);
}
String NumberInputType::serialize(double value) const
{
if (!isfinite(value))
return String();
return serializeForNumberType(value);
}