private void OnMouseUp(TableColumnMouseEventArgs ea)
{
if (_sizingOperation.InProgress)
{
_sizingOperation.EndSizing();
ea.Handled = true;
}
}
private void OnMouseDown(TableColumnMouseEventArgs ea)
{
if (_sizingOperation.Pending)
{
_sizingOperation.BeginSizing(GetTargetCell(ea.ClientPoint) as IHTMLTableCell);
ea.Handled = true;
}
}
private void OnMouseMove(TableColumnMouseEventArgs ea)
{
if (_sizingOperation.InProgress)
{
// mouse move when we are in an active sizing state
_sizingOperation.ContinueSizing(ea.ClientPoint.X);
ea.Handled = true;
}
else
{
// mouse move when we are just tracking the cursor (not sizing)
HandleMouseMove(ea);
}
}
private int HandleMouseEvent(int inEvtDispId, IHTMLEventObj pIEventObj)
{
// WinLive 160252: MSHTML throws a COMException with HRESULT 0x8000FFFF (E_UNEXPECTED) when calling
// IHTMLPaintSite.TransformGlobalToLocal if the table has no height.
IHTMLElement tableElement = (IHTMLElement)_table;
if (tableElement.offsetHeight <= 0 || tableElement.offsetWidth <= 0)
{
return HRESULT.S_FALSE;
}
// compute the element local coordinates of the point
POINT clientMouseLocation = new POINT();
clientMouseLocation.x = pIEventObj.clientX;
clientMouseLocation.y = pIEventObj.clientY;
POINT localMouseLocation = new POINT();
_paintSite.TransformGlobalToLocal(clientMouseLocation, ref localMouseLocation);
// determine if the point is within our bounds
int tableWidth = tableElement.offsetWidth + 4; // extra padding for mouse handling at right edge
Rectangle elementBounds = new Rectangle(-1, -1, tableWidth, tableElement.offsetHeight + 1);
bool mouseInElement = elementBounds.Contains(localMouseLocation.x, localMouseLocation.y);
if (mouseInElement || _sizingOperation.InProgress)
{
// create args
TableColumnMouseEventArgs mouseEventArgs = new TableColumnMouseEventArgs(
new Point(clientMouseLocation.x, clientMouseLocation.y),
new Point(localMouseLocation.x, localMouseLocation.y));
// fire the event
switch (inEvtDispId)
{
case DISPID_HTMLELEMENTEVENTS2.ONMOUSEMOVE:
OnMouseMove(mouseEventArgs);
break;
case DISPID_HTMLELEMENTEVENTS2.ONMOUSEDOWN:
OnMouseDown(mouseEventArgs);
break;
case DISPID_HTMLELEMENTEVENTS2.ONMOUSEUP:
OnMouseUp(mouseEventArgs);
break;
default:
Trace.Fail("unexpected event id");
break;
}
// indicate whether we should mask the event from the editor
return mouseEventArgs.Handled ? HRESULT.S_OK : HRESULT.S_FALSE;
}
else
{
// if the mouse is not inside the element the end sizing
_sizingOperation.EndSizing();
}
// event not handled
return HRESULT.S_FALSE;
}
private void HandleMouseMove(TableColumnMouseEventArgs ea)
{
// cell element we are over
IHTMLElement targetCell = GetTargetCell(ea.ClientPoint);
// if there is no element then we are done
if (targetCell == null)
{
// reset state
_sizingOperation.EndSizing();
return;
}
// get the cell and row
IHTMLTableCell cell = targetCell as IHTMLTableCell;
IHTMLTableRow row = TableHelper.GetContainingRowElement(cell);
// convert the client point to cell-local coordinates & calcualte our comparison x values
TableCellEditingElementBehavior cellBehavior = _tableEditingContext.GetCellBehavior(targetCell);
if (cellBehavior == null)
{
_sizingOperation.ClearPending();
return;
}
Point cellLocalMousePt = cellBehavior.TransformGlobalToLocal(ea.ClientPoint);
int cellSpacing = TableHelper.GetAttributeAsInteger(_table.cellSpacing);
int cellSpacingOffset = cellSpacing / 2;
int compareX = cellLocalMousePt.X;
int cellStartX = 0 - cellSpacingOffset;
int cellEndX = targetCell.offsetWidth + cellSpacingOffset;
// if the mouse is near the edge of the cell then update the pending sizing action
// (unless the mouse is near the edge of the first cell where no sizing is supported)
if (MouseNearCellEdge(compareX, cellStartX, cellSpacing) || MouseNearCellEdge(compareX, cellEndX, cellSpacing))
{
if (MouseNearCellEdge(compareX, cellStartX, cellSpacing))
{
if (cell.cellIndex > 0)
{
int leftIndex = cell.cellIndex - 1;
int rightIndex = cell.cellIndex;
_sizingOperation.TrackPending(ea.ClientPoint.X, leftIndex, rightIndex);
ea.Handled = true;
}
else
{
_sizingOperation.ClearPending();
}
}
else if (MouseNearCellEdge(compareX, cellEndX, cellSpacing))
{
int leftIndex = cell.cellIndex;
int rightIndex = cell.cellIndex < (row.cells.length - 1) ? cell.cellIndex + 1 : -1;
_sizingOperation.TrackPending(ea.ClientPoint.X, leftIndex, rightIndex);
ea.Handled = true;
}
}
else // mouse is not near the edge of the cell, reset pending action
{
_sizingOperation.ClearPending();
}
}
private void OnMouseUp(TableColumnMouseEventArgs ea)
{
if (_sizingOperation.InProgress)
{
_sizingOperation.EndSizing();
ea.Handled = true;
}
}
private void OnMouseDown(TableColumnMouseEventArgs ea)
{
if (_sizingOperation.Pending)
{
_sizingOperation.BeginSizing(GetTargetCell(ea.ClientPoint) as IHTMLTableCell);
ea.Handled = true;
}
}
private void OnMouseMove(TableColumnMouseEventArgs ea)
{
if (_sizingOperation.InProgress)
{
// mouse move when we are in an active sizing state
_sizingOperation.ContinueSizing(ea.ClientPoint.X);
ea.Handled = true;
}
else
{
// mouse move when we are just tracking the cursor (not sizing)
HandleMouseMove(ea);
}
}
private int HandleMouseEvent(int inEvtDispId, IHTMLEventObj pIEventObj)
{
// WinLive 160252: MSHTML throws a COMException with HRESULT 0x8000FFFF (E_UNEXPECTED) when calling
// IHTMLPaintSite.TransformGlobalToLocal if the table has no height.
IHTMLElement tableElement = (IHTMLElement)_table;
if (tableElement.offsetHeight <= 0 || tableElement.offsetWidth <= 0)
{
return(HRESULT.S_FALSE);
}
// compute the element local coordinates of the point
POINT clientMouseLocation = new POINT();
clientMouseLocation.x = pIEventObj.clientX;
clientMouseLocation.y = pIEventObj.clientY;
POINT localMouseLocation = new POINT();
_paintSite.TransformGlobalToLocal(clientMouseLocation, ref localMouseLocation);
// determine if the point is within our bounds
int tableWidth = tableElement.offsetWidth + 4; // extra padding for mouse handling at right edge
Rectangle elementBounds = new Rectangle(-1, -1, tableWidth, tableElement.offsetHeight + 1);
bool mouseInElement = elementBounds.Contains(localMouseLocation.x, localMouseLocation.y);
if (mouseInElement || _sizingOperation.InProgress)
{
// create args
TableColumnMouseEventArgs mouseEventArgs = new TableColumnMouseEventArgs(
new Point(clientMouseLocation.x, clientMouseLocation.y),
new Point(localMouseLocation.x, localMouseLocation.y));
// fire the event
switch (inEvtDispId)
{
case DISPID_HTMLELEMENTEVENTS2.ONMOUSEMOVE:
OnMouseMove(mouseEventArgs);
break;
case DISPID_HTMLELEMENTEVENTS2.ONMOUSEDOWN:
OnMouseDown(mouseEventArgs);
break;
case DISPID_HTMLELEMENTEVENTS2.ONMOUSEUP:
OnMouseUp(mouseEventArgs);
break;
default:
Trace.Fail("unexpected event id");
break;
}
// indicate whether we should mask the event from the editor
return(mouseEventArgs.Handled ? HRESULT.S_OK : HRESULT.S_FALSE);
}
else
{
// if the mouse is not inside the element the end sizing
_sizingOperation.EndSizing();
}
// event not handled
return(HRESULT.S_FALSE);
}
private void HandleMouseMove(TableColumnMouseEventArgs ea)
{
// cell element we are over
IHTMLElement targetCell = GetTargetCell(ea.ClientPoint);
// if there is no element then we are done
if (targetCell == null)
{
// reset state
_sizingOperation.EndSizing();
return;
}
// get the cell and row
IHTMLTableCell cell = targetCell as IHTMLTableCell;
IHTMLTableRow row = TableHelper.GetContainingRowElement(cell);
// convert the client point to cell-local coordinates & calcualte our comparison x values
TableCellEditingElementBehavior cellBehavior = _tableEditingContext.GetCellBehavior(targetCell);
if (cellBehavior == null)
{
_sizingOperation.ClearPending();
return;
}
Point cellLocalMousePt = cellBehavior.TransformGlobalToLocal(ea.ClientPoint);
int cellSpacing = TableHelper.GetAttributeAsInteger(_table.cellSpacing);
int cellSpacingOffset = cellSpacing / 2;
int compareX = cellLocalMousePt.X;
int cellStartX = 0 - cellSpacingOffset;
int cellEndX = targetCell.offsetWidth + cellSpacingOffset;
// if the mouse is near the edge of the cell then update the pending sizing action
// (unless the mouse is near the edge of the first cell where no sizing is supported)
if (MouseNearCellEdge(compareX, cellStartX, cellSpacing) || MouseNearCellEdge(compareX, cellEndX, cellSpacing))
{
if (MouseNearCellEdge(compareX, cellStartX, cellSpacing))
{
if (cell.cellIndex > 0)
{
int leftIndex = cell.cellIndex - 1;
int rightIndex = cell.cellIndex;
_sizingOperation.TrackPending(ea.ClientPoint.X, leftIndex, rightIndex);
ea.Handled = true;
}
else
{
_sizingOperation.ClearPending();
}
}
else if (MouseNearCellEdge(compareX, cellEndX, cellSpacing))
{
int leftIndex = cell.cellIndex;
int rightIndex = cell.cellIndex < (row.cells.length - 1) ? cell.cellIndex + 1 : -1;
_sizingOperation.TrackPending(ea.ClientPoint.X, leftIndex, rightIndex);
ea.Handled = true;
}
}
else // mouse is not near the edge of the cell, reset pending action
{
_sizingOperation.ClearPending();
}
}