private void LayoutHint(Hint hint)
{
if (hint.Inline)
{
if (hint.Range.Start.iLine < tb.LineInfos.Count - 1)
{
hint.HostPanel.Top = tb.LineInfos[hint.Range.Start.iLine + 1].startY - hint.TopPadding - hint.HostPanel.Height - tb.VerticalScroll.Value;
}
else
{
hint.HostPanel.Top = tb.TextHeight + tb.Paddings.Top - hint.HostPanel.Height - tb.VerticalScroll.Value;
}
}
else
{
if (hint.Range.Start.iLine > tb.LinesCount - 1)
{
return;
}
if (hint.Range.Start.iLine == tb.LinesCount - 1)
{
var y = tb.LineInfos[hint.Range.Start.iLine].startY - tb.VerticalScroll.Value + tb.CharHeight;
if (y + hint.HostPanel.Height + 1 > tb.ClientRectangle.Bottom)
{
hint.HostPanel.Top = Math.Max(0, tb.LineInfos[hint.Range.Start.iLine].startY - tb.VerticalScroll.Value - hint.HostPanel.Height);
}
else
{
hint.HostPanel.Top = y;
}
}
else
{
hint.HostPanel.Top = tb.LineInfos[hint.Range.Start.iLine + 1].startY - tb.VerticalScroll.Value;
if (hint.HostPanel.Bottom > tb.ClientRectangle.Bottom)
{
hint.HostPanel.Top = tb.LineInfos[hint.Range.Start.iLine + 1].startY - tb.CharHeight - hint.TopPadding - hint.HostPanel.Height - tb.VerticalScroll.Value;
}
}
}
if (hint.Dock == DockStyle.Fill)
{
hint.Width = tb.ClientSize.Width - tb.LeftIndent - 2;
hint.HostPanel.Left = tb.LeftIndent;
}
else
{
var p1 = tb.PlaceToPoint(hint.Range.Start);
var p2 = tb.PlaceToPoint(hint.Range.End);
var cx = (p1.X + p2.X) / 2;
var x = cx - hint.HostPanel.Width / 2;
hint.HostPanel.Left = Math.Max(tb.LeftIndent, x);
if (hint.HostPanel.Right > tb.ClientSize.Width)
{
hint.HostPanel.Left = Math.Max(tb.LeftIndent, x - (hint.HostPanel.Right - tb.ClientSize.Width));
}
}
}
protected override void OnPaint(PaintEventArgs e)
{
if (target == null)
{
return;
}
Point car = PointToClient(target.PointToScreen(target.PlaceToPoint(target.Selection.Start)));
Size fontSize = TextRenderer.MeasureText("W", Font);
int column = 0;
e.Graphics.FillRectangle(new LinearGradientBrush(new Rectangle(0, 0, Width, Height), BackColor, BackColor2, 270), new Rectangle(0, 0, Width, Height));
float columnWidth = target.CharWidth;
var sf = new StringFormat();
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Near;
var zeroPoint = target.PositionToPoint(0);
zeroPoint = PointToClient(target.PointToScreen(zeroPoint));
using (var pen = new Pen(TickColor))
using (var textBrush = new SolidBrush(ForeColor))
for (float x = zeroPoint.X; x < Right; x += columnWidth, ++column)
{
if (column % 10 == 0)
{
e.Graphics.DrawString(column.ToString(), Font, textBrush, x, 0f, sf);
}
e.Graphics.DrawLine(pen, (int)x, fontSize.Height + (column % 5 == 0 ? 1 : 3), (int)x, Height - 4);
}
using (var pen = new Pen(TickColor))
e.Graphics.DrawLine(pen, new Point(car.X - 3, Height - 3), new Point(car.X + 3, Height - 3));
using (var pen = new Pen(CaretTickColor))
{
e.Graphics.DrawLine(pen, new Point(car.X - 2, fontSize.Height + 3), new Point(car.X - 2, Height - 4));
e.Graphics.DrawLine(pen, new Point(car.X, fontSize.Height + 1), new Point(car.X, Height - 4));
e.Graphics.DrawLine(pen, new Point(car.X + 2, fontSize.Height + 3), new Point(car.X + 2, Height - 4));
}
}
protected override void OnPaint(PaintEventArgs e)
{
if (target == null)
{
return;
}
var zoom = this.Scale * 100 / target.Zoom;
if (zoom <= float.Epsilon)
{
return;
}
//calc startPlace
var r = target.VisibleRange;
if (startPlace.iLine > r.Start.iLine)
{
startPlace.iLine = r.Start.iLine;
}
else
{
var endP = target.PlaceToPoint(r.End);
endP.Offset(0, -(int)(ClientSize.Height / zoom) + target.CharHeight);
var pp = target.PointToPlace(endP);
if (pp.iLine > startPlace.iLine)
{
startPlace.iLine = pp.iLine;
}
}
startPlace.iChar = 0;
//calc scroll pos
var linesCount = target.Lines.Count;
var sp1 = (float)r.Start.iLine / linesCount;
var sp2 = (float)r.End.iLine / linesCount;
//scale graphics
e.Graphics.ScaleTransform(zoom, zoom);
//draw text
var size = new SizeF(ClientSize.Width / zoom, ClientSize.Height / zoom);
target.DrawText(e.Graphics, startPlace, size.ToSize());
//draw visible rect
var p0 = target.PlaceToPoint(startPlace);
var p1 = target.PlaceToPoint(r.Start);
var p2 = target.PlaceToPoint(r.End);
var y1 = p1.Y - p0.Y;
var y2 = p2.Y + target.CharHeight - p0.Y;
e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
using (var brush = new SolidBrush(Color.FromArgb(50, ForeColor)))
using (var pen = new Pen(brush, 1 / zoom))
{
var rect = new Rectangle(0, y1, (int)((ClientSize.Width - 1) / zoom), y2 - y1);
e.Graphics.FillRectangle(brush, rect);
e.Graphics.DrawRectangle(pen, rect);
}
//draw scrollbar
if (scrollbarVisible)
{
e.Graphics.ResetTransform();
e.Graphics.SmoothingMode = SmoothingMode.None;
using (var brush = new SolidBrush(Color.FromArgb(200, ForeColor)))
{
var rect = new RectangleF(ClientSize.Width - 3, ClientSize.Height * sp1, 2,
ClientSize.Height * (sp2 - sp1));
e.Graphics.FillRectangle(brush, rect);
}
}
needRepaint = false;
}
internal void DoAutocomplete(bool forced)
{
if (!Menu.Enabled)
{
Menu.Close();
return;
}
visibleItems.Clear();
FocussedItemIndex = 0;
VerticalScroll.Value = 0;
//some magic for update scrolls
AutoScrollMinSize -= new Size(1, 0);
AutoScrollMinSize += new Size(1, 0);
//get fragment around caret
Range fragment = tb.Selection.GetFragment(Menu.SearchPattern);
string text = fragment.Text;
//calc screen point for popup menu
Point point = tb.PlaceToPoint(fragment.End);
point.Offset(2, tb.CharHeight);
//
if (forced || (text.Length >= Menu.MinFragmentLength &&
tb.Selection.IsEmpty && /*pops up only if selected range is empty*/
(tb.Selection.Start > fragment.Start || text.Length == 0 /*pops up only if caret is after first letter*/)))
{
Menu.Fragment = fragment;
bool foundSelected = false;
//build popup menu
foreach (var item in sourceItems)
{
item.Parent = Menu;
CompareResult res = item.Compare(text);
if (res != CompareResult.Hidden)
{
visibleItems.Add(item);
}
if (res == CompareResult.VisibleAndSelected && !foundSelected)
{
foundSelected = true;
FocussedItemIndex = visibleItems.Count - 1;
}
}
if (foundSelected)
{
AdjustScroll();
DoSelectedVisible();
}
}
//show popup menu
if (Count > 0)
{
if (!Menu.Visible)
{
CancelEventArgs args = new CancelEventArgs();
Menu.OnOpening(args);
if (!args.Cancel)
{
Menu.Show(tb, point);
}
}
DoSelectedVisible();
Invalidate();
}
else
{
Menu.Close();
}
}