/// <remarks>
/// If the caret position is outside the document text bounds
/// it is set to the correct position by calling ValidateCaretPos.
/// </remarks>
public void ValidateCaretPos()
{
line = Math.Max(0, Math.Min(textArea.Document.TotalNumberOfLines - 1, line));
column = Math.Max(0, column);
if (column == int.MaxValue || !textArea.TextEditorProperties.AllowCaretBeyondEOL)
{
LineSegment lineSegment = textArea.Document.GetLineSegment(line);
column = Math.Min(column, lineSegment.Length);
}
DebuggerData.selectedLine = line;
textArea.Invalidate();
}
void VScrollBarValueChanged(object sender, EventArgs e)
{
textArea.VirtualTop = new Point(textArea.VirtualTop.X, vScrollBar.Value);
textArea.Invalidate();
AdjustScrollBars();
}
public void UpdateCaretPosition()
{
Log("UpdateCaretPosition");
if (textArea.TextEditorProperties.CaretLine)
{
textArea.Invalidate();
}
else
{
if (caretImplementation.RequireRedrawOnPositionChange)
{
textArea.UpdateLine(oldLine);
if (line != oldLine)
{
textArea.UpdateLine(line);
}
}
else
{
if (textArea.MotherTextAreaControl.TextEditorProperties.LineViewerStyle == LineViewerStyle.FullRow && oldLine != line)
{
textArea.UpdateLine(oldLine);
textArea.UpdateLine(line);
}
}
}
oldLine = line;
if (hidden || textArea.MotherTextEditorControl.IsInUpdate)
{
outstandingUpdate = true;
return;
}
else
{
outstandingUpdate = false;
}
ValidateCaretPos();
int lineNr = this.line;
int xpos = textArea.TextView.GetDrawingXPos(lineNr, this.column);
//LineSegment lineSegment = textArea.Document.GetLineSegment(lineNr);
Point pos = ScreenPosition;
if (xpos >= 0)
{
CreateCaret();
bool success = caretImplementation.SetPosition(pos.X, pos.Y);
if (!success)
{
caretImplementation.Destroy();
caretCreated = false;
UpdateCaretPosition();
}
}
else
{
caretImplementation.Destroy();
}
// set the input method editor location
if (ime == null)
{
ime = new Ime(textArea.Handle, textArea.Document.TextEditorProperties.Font);
}
else
{
ime.HWnd = textArea.Handle;
ime.Font = textArea.Document.TextEditorProperties.Font;
}
ime.SetIMEWindowLocation(pos.X, pos.Y);
currentPos = pos;
}
public void ResizeTextArea(bool forceRedraw = false)
{
var y = 0;
var h = 0;
if (_hRuler != null)
{
_hRuler.Bounds = new Rectangle(0,
0,
Width - SystemInformation.HorizontalScrollBarArrowWidth,
TextArea.TextView.FontHeight);
y = _hRuler.Bounds.Bottom;
h = _hRuler.Bounds.Height;
}
var fontHeight = TextArea.TextView.FontHeight;
var totalLineHeight = GetNumberOfVisibleLines() * fontHeight;
// If the lines cannot fit the TextArea draw the VScrollBar
var drawVScrollBar = totalLineHeight > Height || TextArea.VirtualTop.Y > 0;
var width = TextArea.TextView.DrawingPosition.Width;
// Measuring string length is not exactly accurate, add 10 as a error margin
var drawHScrollBar = width > 0 && GetMaximumVisibleLineWidth() + 10 > TextArea.TextView.DrawingPosition.Width ||
TextArea.VirtualTop.X > 0;
AdjustScrollBars();
if (!forceRedraw && !IsRedrawRequired(drawVScrollBar, drawHScrollBar))
{
return;
}
VScrollBar.ValueChanged -= VScrollBarValueChanged;
HScrollBar.ValueChanged -= HScrollBarValueChanged;
if (drawHScrollBar && drawVScrollBar)
{
TextArea.Bounds = new Rectangle(0, y,
Width - SystemInformation.HorizontalScrollBarArrowWidth,
Height - SystemInformation.VerticalScrollBarArrowHeight - h);
Controls.Remove(VScrollBar);
Controls.Remove(HScrollBar);
Controls.Add(VScrollBar);
Controls.Add(HScrollBar);
VScrollBar.ValueChanged += VScrollBarValueChanged;
HScrollBar.ValueChanged += HScrollBarValueChanged;
SetScrollBarBounds(true, true);
}
else if (drawVScrollBar)
{
TextArea.Bounds = new Rectangle(0, y,
Width - SystemInformation.HorizontalScrollBarArrowWidth,
Height);
// If VScrollBar was not visible before scroll to the end
if (!Controls.Contains(VScrollBar))
{
VScrollBar.Value = VScrollBar.Maximum;
}
else
{
Controls.Remove(VScrollBar);
}
Controls.Add(VScrollBar);
Controls.Remove(HScrollBar);
VScrollBar.ValueChanged += VScrollBarValueChanged;
SetScrollBarBounds(true, false);
}
else if (drawHScrollBar)
{
TextArea.Bounds = new Rectangle(0, y,
Width,
Height - SystemInformation.VerticalScrollBarArrowHeight - h);
Controls.Remove(HScrollBar);
Controls.Add(HScrollBar);
Controls.Remove(VScrollBar);
HScrollBar.ValueChanged += HScrollBarValueChanged;
SetScrollBarBounds(false, true);
}
else
{
Controls.Remove(VScrollBar);
Controls.Remove(HScrollBar);
TextArea.Bounds = new Rectangle(0, y,
Width,
Height);
}
TextArea.Invalidate();
}
void HScrollBarValueChanged(object sender, EventArgs e)
{
TextArea.VirtualTop = new Point(HScrollBar.Value * TextArea.TextView.WideSpaceWidth, TextArea.VirtualTop.Y);
TextArea.Invalidate();
}
void VScrollBarValueChanged(object sender, EventArgs e)
{
textArea.VirtualTop = new Point(textArea.VirtualTop.X, vScrollBar.Value);
textArea.Invalidate();
AdjustScrollBars();
/*
* HACK for improved scrolling smooothness
* by Steve Gray @ 15-Oct-2006
*/
/*
* Point vtop = textArea.VirtualTop;
*
* // adjust VirtualTop, but don't auto-Invalidate()
* textArea.NoAutoInvalidate = true;
* textArea.VirtualTop = new Point(textArea.VirtualTop.X, vScrollBar.Value);
* textArea.NoAutoInvalidate = false;
*
* int yoffset = textArea.VirtualTop.Y - vtop.Y;
* if (yoffset == 0)
* return;
*
* if (Math.Abs(yoffset) + 10 >= textArea.ClientSize.Height)
* {
* // no data to keep
* textArea.Invalidate();
* AdjustScrollBars();
* return;
* }
*
* // get screen location of textArea
* Point taloc = textArea.PointToScreen(Point.Empty);
*
* Graphics g = textArea.CreateGraphics();
* Rectangle rect = new Rectangle(taloc, textArea.ClientSize);
*
* if (yoffset > 0) // scrolled down, move graphics up
* {
* rect.Y += yoffset;
* rect.Height -= yoffset;
* g.CopyFromScreen(rect.Location, Point.Empty, rect.Size);
* rect.Y = rect.Height;
* }
* else // scrolled up, move graphics down
* {
* yoffset = -yoffset;
* rect.Height -= yoffset;
* g.CopyFromScreen(rect.Location, new Point(0, yoffset), rect.Size);
* rect.Y = 0;
* }
* rect.Height = yoffset;
* rect.X = 0;
*
* // Invalidate region which has been "revealed"
* textArea.Invalidate(rect);
* //textArea.Invalidate();
*
* lock (this)
* { // set a timer to invalidate and redraw in full,
* // as the above code can cause occasional graphical oddities
* if (scrollTimer == null)
* scrollTimer = new System.Threading.Timer(new TimerCallback(InvalidateTimer), null, 250, -1);
* else
* scrollTimer.Change(250, -1);
* }
*
* AdjustScrollBars();
*
*/
}
public void UpdateCaretPosition()
{
if (Shared.TEP.CaretLine)
{
_textArea.Invalidate();
}
else
{
if (_caretImplementation.RequireRedrawOnPositionChange)
{
_textArea.UpdateLine(_oldLine);
if (_line != _oldLine)
{
_textArea.UpdateLine(_line);
}
}
else
{
if (Shared.TEP.LineViewerStyle == LineViewerStyle.FullRow && _oldLine != _line)
{
_textArea.UpdateLine(_oldLine);
_textArea.UpdateLine(_line);
}
}
}
_oldLine = _line;
if (_hidden || _textArea.MotherTextEditorControl.IsInUpdate)
{
_outstandingUpdate = true;
return;
}
else
{
_outstandingUpdate = false;
}
ValidateCaretPos();
int lineNr = _line;
int xpos = _textArea.GetDrawingXPos(lineNr, this._column);
//LineSegment lineSegment = textArea.Document.GetLineSegment(lineNr);
Point pos = ScreenPosition;
if (xpos >= 0)
{
CreateCaret();
bool success = _caretImplementation.SetPosition(pos.X, pos.Y);
if (!success)
{
_caretImplementation.Destroy();
_caretCreated = false;
UpdateCaretPosition();
}
}
else
{
_caretImplementation.Destroy();
}
//// set the input method editor location
//if (ime == null)
//{
// ime = new Ime(textArea.Handle, Shared.FontContainer.DefaultFont);
//}
//else
//{
// ime.HWnd = textArea.Handle;
// ime.Font = Shared.FontContainer.DefaultFont;
//}
//ime.SetIMEWindowLocation(pos.X, pos.Y);
_currentPos = pos;
}
private void VScrollBarValueChanged(object sender, EventArgs e)
{
TextArea.VirtualTop = new Point(TextArea.VirtualTop.X, VScrollBar.Value);
TextArea.Invalidate();
UpdateLayout();
}
