void Scrollbar::offsetDidChange()
{
float position = static_cast<float>(m_scrollableArea.scrollOffset(m_orientation));
if (position == m_currentPos)
return;
int oldThumbPosition = theme().thumbPosition(*this);
m_currentPos = position;
updateThumbPosition();
if (m_pressedPart == ThumbPart)
setPressedPos(m_pressedPos + theme().thumbPosition(*this) - oldThumbPosition);
}
void Scrollbar::offsetDidChange()
{
ASSERT(m_scrollableArea);
float position = static_cast<float>(m_scrollableArea->scrollPosition(this));
if (position == m_currentPos)
return;
int oldThumbPosition = theme()->thumbPosition(this);
m_currentPos = position;
updateThumbPosition();
if (m_pressedPart == ThumbPart)
setPressedPos(m_pressedPos + theme()->thumbPosition(this) - oldThumbPosition);
}
void Scrollbar::offsetDidChange()
{
ASSERT(m_scrollableArea);
float position = scrollableAreaCurrentPos();
if (position == m_currentPos)
return;
int oldThumbPosition = thumbPosition();
m_currentPos = position;
updateThumb();
if (m_pressedPart == ThumbPart)
setPressedPos(m_pressedPos + thumbPosition() - oldThumbPosition);
}
void Scrollbar::moveThumb(int pos)
{
// Drag the thumb.
int thumbPos = theme()->thumbPosition(this);
int thumbLen = theme()->thumbLength(this);
int trackLen = theme()->trackLength(this);
int maxPos = trackLen - thumbLen;
int delta = pos - pressedPos();
if (delta > 0)
delta = min(maxPos - thumbPos, delta);
else if (delta < 0)
delta = max(-thumbPos, delta);
if (delta) {
setValue(static_cast<int>(static_cast<float>(thumbPos + delta) * maximum() / (trackLen - thumbLen)));
setPressedPos(pressedPos() + theme()->thumbPosition(this) - thumbPos);
}
}
void Scrollbar::offsetDidChange() {
ASSERT(m_scrollableArea);
float position = scrollableAreaCurrentPos();
if (position == m_currentPos)
return;
float oldPosition = m_currentPos;
int oldThumbPosition = theme().thumbPosition(*this);
m_currentPos = position;
ScrollbarPart invalidParts =
theme().invalidateOnThumbPositionChange(*this, oldPosition, position);
setNeedsPaintInvalidation(invalidParts);
if (m_pressedPart == ThumbPart)
setPressedPos(m_pressedPos + theme().thumbPosition(*this) -
oldThumbPosition);
}
bool Scrollbar::setCurrentPos(float pos, ScrollSource source)
{
if ((source != FromScrollAnimator) && client())
client()->setScrollPositionAndStopAnimation(m_orientation, pos);
if (pos == m_currentPos)
return false;
int oldValue = value();
int oldThumbPos = theme()->thumbPosition(this);
m_currentPos = pos;
updateThumbPosition();
if (m_pressedPart == ThumbPart)
setPressedPos(m_pressedPos + theme()->thumbPosition(this) - oldThumbPos);
if (value() != oldValue && client())
client()->valueChanged(this);
return true;
}
bool Scrollbar::setCurrentPos(float pos)
{
if (pos == m_currentPos)
#if PLATFORM(SDL)
return true;
#else
return false;
#endif
int oldValue = value();
int oldThumbPos = theme()->thumbPosition(this);
m_currentPos = pos;
updateThumbPosition();
if (m_pressedPart == ThumbPart)
setPressedPos(m_pressedPos + theme()->thumbPosition(this) - oldThumbPos);
if (value() != oldValue && client())
client()->valueChanged(this);
return true;
}
