void OnMouseDown(object sender, MouseEventArgs e)
{
Point mousepos;
textArea.mousepos = e.Location;
mousepos = e.Location;
if (dodragdrop)
{
return;
}
if (doubleclick)
{
doubleclick = false;
return;
}
if (textArea.TextView.DrawingPosition.Contains(mousepos.X, mousepos.Y))
{
gotmousedown = true;
textArea.SelectionManager.selectFrom.where = WhereFrom.TArea;
button = e.Button;
// double-click
if (button == MouseButtons.Left && e.Clicks == 2)
{
int deltaX = Math.Abs(lastmousedownpos.X - e.X);
int deltaY = Math.Abs(lastmousedownpos.Y - e.Y);
if (deltaX <= SystemInformation.DoubleClickSize.Width &&
deltaY <= SystemInformation.DoubleClickSize.Height)
{
DoubleClickSelectionExtend();
lastmousedownpos = new Point(e.X, e.Y);
if (textArea.SelectionManager.selectFrom.where == WhereFrom.Gutter)
{
if (!minSelection.IsEmpty && !maxSelection.IsEmpty && textArea.SelectionManager.SelectionCollection.Count > 0)
{
textArea.SelectionManager.SelectionCollection[0].StartPosition = minSelection;
textArea.SelectionManager.SelectionCollection[0].EndPosition = maxSelection;
textArea.SelectionManager.SelectionStart = minSelection;
minSelection = TextLocation.Empty;
maxSelection = TextLocation.Empty;
}
}
return;
}
}
minSelection = TextLocation.Empty;
maxSelection = TextLocation.Empty;
lastmousedownpos = mousedownpos = new Point(e.X, e.Y);
if (button == MouseButtons.Left)
{
FoldMarker marker = textArea.TextView.GetFoldMarkerFromPosition(mousepos.X - textArea.TextView.DrawingPosition.X,
mousepos.Y - textArea.TextView.DrawingPosition.Y);
if (marker != null && marker.IsFolded)
{
if (textArea.SelectionManager.HasSomethingSelected)
{
clickedOnSelectedText = true;
}
textArea.SelectionManager.SetSelection(new DefaultSelection(textArea.TextView.Document, new TextLocation(marker.StartColumn, marker.StartLine), new TextLocation(marker.EndColumn, marker.EndLine)));
textArea.Focus();
return;
}
if ((Control.ModifierKeys & Keys.Shift) == Keys.Shift)
{
ExtendSelectionToMouse();
}
else
{
TextLocation realmousepos = textArea.TextView.GetLogicalPosition(mousepos.X - textArea.TextView.DrawingPosition.X, mousepos.Y - textArea.TextView.DrawingPosition.Y);
clickedOnSelectedText = false;
int offset = textArea.Document.PositionToOffset(realmousepos);
if (textArea.SelectionManager.HasSomethingSelected &&
textArea.SelectionManager.IsSelected(offset))
{
clickedOnSelectedText = true;
}
else
{
textArea.SelectionManager.ClearSelection();
if (mousepos.Y > 0 && mousepos.Y < textArea.TextView.DrawingPosition.Height)
{
TextLocation pos = new TextLocation();
pos.Y = Math.Min(textArea.Document.TotalNumberOfLines - 1, realmousepos.Y);
pos.X = realmousepos.X;
textArea.Caret.Position = pos;
textArea.SetDesiredColumn();
}
}
}
}
else if (button == MouseButtons.Right)
{
// Rightclick sets the cursor to the click position unless
// the previous selection was clicked
TextLocation realmousepos = textArea.TextView.GetLogicalPosition(mousepos.X - textArea.TextView.DrawingPosition.X, mousepos.Y - textArea.TextView.DrawingPosition.Y);
int offset = textArea.Document.PositionToOffset(realmousepos);
if (!textArea.SelectionManager.HasSomethingSelected ||
!textArea.SelectionManager.IsSelected(offset))
{
textArea.SelectionManager.ClearSelection();
if (mousepos.Y > 0 && mousepos.Y < textArea.TextView.DrawingPosition.Height)
{
TextLocation pos = new TextLocation();
pos.Y = Math.Min(textArea.Document.TotalNumberOfLines - 1, realmousepos.Y);
pos.X = realmousepos.X;
textArea.Caret.Position = pos;
textArea.SetDesiredColumn();
}
}
}
}
textArea.Focus();
}
void ExtendSelectionToMouse()
{
Point mousepos;
mousepos = textArea.mousepos;
TextLocation realmousepos = textArea.TextView.GetLogicalPosition(
Math.Max(0, mousepos.X - textArea.TextView.DrawingPosition.X),
mousepos.Y - textArea.TextView.DrawingPosition.Y);
int y = realmousepos.Y;
realmousepos = textArea.Caret.ValidatePosition(realmousepos);
TextLocation oldPos = textArea.Caret.Position;
if (oldPos == realmousepos && textArea.SelectionManager.selectFrom.where != WhereFrom.Gutter)
{
return;
}
// the selection is from the gutter
if (textArea.SelectionManager.selectFrom.where == WhereFrom.Gutter)
{
if (realmousepos.Y < textArea.SelectionManager.SelectionStart.Y)
{
// the selection has moved above the startpoint
textArea.Caret.Position = new TextLocation(0, realmousepos.Y);
}
else
{
// the selection has moved below the startpoint
textArea.Caret.Position = textArea.SelectionManager.NextValidPosition(realmousepos.Y);
}
}
else
{
textArea.Caret.Position = realmousepos;
}
// moves selection across whole words for double-click initiated selection
if (!minSelection.IsEmpty && textArea.SelectionManager.SelectionCollection.Count > 0 && textArea.SelectionManager.selectFrom.where == WhereFrom.TArea)
{
// Extend selection when selection was started with double-click
ISelection selection = textArea.SelectionManager.SelectionCollection[0];
TextLocation min = textArea.SelectionManager.GreaterEqPos(minSelection, maxSelection) ? maxSelection : minSelection;
TextLocation max = textArea.SelectionManager.GreaterEqPos(minSelection, maxSelection) ? minSelection : maxSelection;
if (textArea.SelectionManager.GreaterEqPos(max, realmousepos) && textArea.SelectionManager.GreaterEqPos(realmousepos, min))
{
textArea.SelectionManager.SetSelection(min, max);
}
else if (textArea.SelectionManager.GreaterEqPos(max, realmousepos))
{
int moff = textArea.Document.PositionToOffset(realmousepos);
min = textArea.Document.OffsetToPosition(FindWordStart(textArea.Document, moff));
textArea.SelectionManager.SetSelection(min, max);
}
else
{
int moff = textArea.Document.PositionToOffset(realmousepos);
max = textArea.Document.OffsetToPosition(FindWordEnd(textArea.Document, moff));
textArea.SelectionManager.SetSelection(min, max);
}
}
else
{
textArea.SelectionManager.ExtendSelection(oldPos, textArea.Caret.Position);
}
textArea.SetDesiredColumn();
}
