///
/// <summary>
/// After current data is changed this function fixes positions of all columns
/// and all events</summary>
///
private void FixPositions(
bool displayEvents,
bool animate = false,
bool updateDuration = false
)
{
double startLeft;
double posOffset;
int colcount;
long newStart;
long idxOffset;
colcount = (m_columnCount + EXTRA_COLUMNS);
posOffset = TimeSpanToPixels(CurrentDateTime - m_timeline.GetFloorTime(CurrentDateTime));
newStart = m_timeline.IndexOf(CurrentDateTime) - colcount / 2;
startLeft = (PixelWidth / 2 - ColumnPixelWidth * (colcount / 2)) - posOffset;
if (m_startIndex == INVALID_COLUMN_IDX || newStart > m_startIndex + colcount || newStart + colcount < m_startIndex)
{
//
// this is case when we draw columns for the first time, or there are no columns which data contexts
// may be reused
//
PositionColumnAndMarker(newStart, startLeft, 0, true, null);
}
else if (m_startIndex == newStart)
{
//
// this is the case when we reuse existing column context (date string)
//
PositionColumnAndMarker(newStart, startLeft, 0, false, null);
}
else
{
idxOffset = m_startIndex - newStart;
ShiftArray(m_columns, idxOffset, out m_columns);
ShiftArray(m_columnMarkers, idxOffset, out m_columnMarkers);
PositionColumnAndMarker(newStart, startLeft, 0, false, null);
if (idxOffset > 0)
{
for (int i = 0; i < idxOffset; ++i)
{
SetColumnDataContext(newStart + i, i);
}
}
else
{
for (int i = colcount + (int)idxOffset; i < colcount; ++i)
{
SetColumnDataContext(newStart + i, i);
}
}
}
m_startIndex = Math.Max(0, newStart);
if (displayEvents)
{
DisplayEvents(animate);
}
if (updateDuration)
{
foreach (var ve in m_visibleEvents)
{
var evnt = ve.Key;
TimelineDisplayEvent tde = m_dispEvents[evnt];
tde.Recalculate();
}
}
}
///
/// <summary>
/// After current data is changed this function fixes positions of all columns
/// and all events</summary>
///
private void FixPositions(
)
{
double width;
double height;
object el;
double x;
double ox;
long index;
double posOffset;
object[] elements;
object[] textElements = null;
int middle;
DateTime floor;
DateTime currDate;
long maxIndex;
width = PixelWidth;
height = PixelHeight;
m_minIndex = 0;
m_maxIndex = 0;
currDate = CurrentDateTime;
floor = m_timeline.GetFloorTime(currDate);
posOffset = TimeSpanToPixels(currDate - floor);
elements = new object[m_columnCount + 2];
m_columnIndexes.Keys.CopyTo(elements, 0);
textElements = new object[m_columnCount + 2];
m_columnTextIndexes.Keys.CopyTo(textElements, 0);
middle = m_columnCount / 2 + 1;
ox = width / 2 - posOffset;
index = m_timeline.IndexOf(currDate);
x = ox;
maxIndex = m_timeline.IndexOf(m_timeline.MaxDateTime);
for (int i = middle; i < m_columnCount + 2; ++i)
{
el = elements[i];
MoveColumn(el, x, GetDataContext(index));
m_columnIndexes[el] = Math.Min(maxIndex, index);
el = textElements[i];
if (el != null)
{
MoveColumnText(el, x, GetDataContext(index));
m_columnTextIndexes[el] = Math.Min(maxIndex, index);
}
x += ColumnPixelWidth;
if (index != int.MaxValue)
{
++index;
}
}
m_maxIndex = index;
index = m_timeline.IndexOf(currDate) - 1;
x = ox - ColumnPixelWidth;
for (int i = middle - 1; i >= 0; --i, --index)
{
el = elements[i];
MoveColumn(el, x, GetDataContext(index));
m_columnIndexes[el] = Math.Max(-1, index);
el = textElements[i];
if (el != null)
{
MoveColumnText(el, x, GetDataContext(index));
m_columnTextIndexes[el] = Math.Min(-1, index);
}
x -= ColumnPixelWidth;
}
m_minIndex = Math.Max(index, 0);
DisplayEvents(true);
}
