/// <summary>
/// Checks whether mouse down position belongs to selected portion of text,
/// and initiates a drad-and-drop process in this case.
/// Drag-drop initiation does not capture mouse yet, and do not start
/// OleDragDrop; this will happen on a subsequent mouse move event
/// (if it will happen before mouse up).
/// </summary>
/// <param name="mouseDownPoint">
/// TextView-relative coordinates of mouse down event.
/// </param>
/// <returns>
/// true if this mouse down was inside of selection and drag-drop process was activated.
/// false if the mouse down was outside of selected portion.
/// </returns>
internal bool SourceOnMouseLeftButtonDown(Point mouseDownPoint)
{
ITextSelection selection = _textEditor.Selection;
if (_textEditor.UiScope is PasswordBox)
{
//
_dragStarted = false;
}
else
{
// Get the drag minimum width/height from SystemMetrics.DragMinimumWidth/DragMinimumHeight.
// dragMinimumWidth and dragMinimumheight of a rectangle centered on a drag point to allow for limited movement
// of the mouse pointer before a drag operation begins.
// It allows the user to click and release the mouse button easily without unintentionally starting a drag operation.
int minimumHorizontalDragDistance = (int)SystemParameters.MinimumHorizontalDragDistance;
int minimumVerticalDragDistance = (int)SystemParameters.MinimumVerticalDragDistance;
_dragRect = new Rect(mouseDownPoint.X - minimumHorizontalDragDistance, mouseDownPoint.Y - minimumVerticalDragDistance, minimumHorizontalDragDistance * 2, minimumVerticalDragDistance * 2);
// Check if click happened within existing selection
_dragStarted = selection.Contains(mouseDownPoint);
}
return(_dragStarted);
}
// Token: 0x060085B5 RID: 34229 RVA: 0x0024A500 File Offset: 0x00248700
internal bool SourceOnMouseLeftButtonDown(Point mouseDownPoint)
{
ITextSelection selection = this._textEditor.Selection;
if (this._textEditor.UiScope is PasswordBox)
{
this._dragStarted = false;
}
else
{
int num = (int)SystemParameters.MinimumHorizontalDragDistance;
int num2 = (int)SystemParameters.MinimumVerticalDragDistance;
this._dragRect = new Rect(mouseDownPoint.X - (double)num, mouseDownPoint.Y - (double)num2, (double)(num * 2), (double)(num2 * 2));
this._dragStarted = selection.Contains(mouseDownPoint);
}
return(this._dragStarted);
}
// Token: 0x060085C0 RID: 34240 RVA: 0x0024AD64 File Offset: 0x00248F64
private bool IsSelectionContainsDropPosition(ITextSelection selection, ITextPointer dropPosition)
{
bool flag = selection.Contains(dropPosition);
if (flag && selection.IsTableCellRange)
{
for (int i = 0; i < selection.TextSegments.Count; i++)
{
if (dropPosition.CompareTo(selection._TextSegments[i].End) == 0)
{
flag = false;
break;
}
}
}
return(flag);
}
// Table cell selection currently include the next adjacent cell start element so that
// selection always contains the drop position even though the drop position is on the next cell.
// This private method check the table range really contains the drop position or not.
private bool IsSelectionContainsDropPosition(ITextSelection selection, ITextPointer dropPosition)
{
bool selectionContainedDropPosition = selection.Contains(dropPosition);
if (selectionContainedDropPosition && selection.IsTableCellRange)
{
for (int i = 0; i < selection.TextSegments.Count; i++)
{
TextSegment textSegment = selection._TextSegments[i];
if (dropPosition.CompareTo(textSegment.End) == 0)
{
selectionContainedDropPosition = false;
break;
}
}
}
return(selectionContainedDropPosition);
}
// Table cell selection currently include the next adjacent cell start element so that
// selection always contains the drop position even though the drop position is on the next cell.
// This private method check the table range really contains the drop position or not.
private bool IsSelectionContainsDropPosition(ITextSelection selection, ITextPointer dropPosition)
{
bool selectionContainedDropPosition = selection.Contains(dropPosition);
if (selectionContainedDropPosition && selection.IsTableCellRange)
{
for (int i = 0; i < selection.TextSegments.Count; i++)
{
TextSegment textSegment = selection._TextSegments[i];
if (dropPosition.CompareTo(textSegment.End) == 0)
{
selectionContainedDropPosition = false;
break;
}
}
}
return selectionContainedDropPosition;
}
