//----------------------------------------------------------------------------//
void Scrollbar::setConfig(const float* const document_size,
const float* const page_size,
const float* const step_size,
const float* const overlap_size,
const float* const position)
{
const bool reset_max_position = d_endLockPosition && isAtEnd();
bool config_changed = false;
bool position_changed = false;
if (document_size && (d_documentSize != *document_size))
{
d_documentSize = *document_size;
config_changed = true;
}
if (page_size && (d_pageSize != *page_size))
{
d_pageSize = *page_size;
config_changed = true;
}
if (step_size && (d_stepSize != *step_size))
{
d_stepSize = *step_size;
config_changed = true;
}
if (overlap_size && (d_overlapSize != *overlap_size))
{
d_overlapSize = *overlap_size;
config_changed = true;
}
if (position)
position_changed = setScrollPosition_impl(*position);
else if (reset_max_position)
position_changed = setScrollPosition_impl(getMaxScrollPosition());
// _always_ update the thumb to keep things in sync. (though this
// can cause a double-trigger of EventScrollPositionChanged, which
// also happens with setScrollPosition anyway).
updateThumb();
//
// Fire appropriate events based on actions we took.
//
if (config_changed)
{
WindowEventArgs args(this);
onScrollConfigChanged(args);
}
if (position_changed)
{
WindowEventArgs args(this);
onScrollPositionChanged(args);
}
}
//----------------------------------------------------------------------------//
void Scrollbar::setOverlapSize(float overlap_size)
{
if (d_overlapSize != overlap_size)
{
d_overlapSize = overlap_size;
WindowEventArgs args(this);
onScrollConfigChanged(args);
}
}
//----------------------------------------------------------------------------//
void Scrollbar::setStepSize(float step_size)
{
if (d_stepSize != step_size)
{
d_stepSize = step_size;
WindowEventArgs args(this);
onScrollConfigChanged(args);
}
}
/*************************************************************************
Set the page size for this scroll bar.
*************************************************************************/
void Scrollbar::setPageSize(float page_size)
{
if (d_pageSize != page_size)
{
d_pageSize = page_size;
updateThumb();
WindowEventArgs args(this);
onScrollConfigChanged(args);
}
}
/*************************************************************************
Set the size of the document or data.
*************************************************************************/
void Scrollbar::setDocumentSize(float document_size)
{
if (d_documentSize != document_size)
{
d_documentSize = document_size;
updateThumb();
WindowEventArgs args(this);
onScrollConfigChanged(args);
}
}
//----------------------------------------------------------------------------//
void Scrollbar::setPageSize(float page_size)
{
if (d_pageSize != page_size)
{
const bool reset_max_position = d_endLockPosition && isAtEnd();
d_pageSize = page_size;
if (reset_max_position)
setScrollPosition(getMaxScrollPosition());
else
updateThumb();
WindowEventArgs args(this);
onScrollConfigChanged(args);
}
}
