protected override void OnLostFocus(EventArgs e)
{
if (this.input == Keys.Left || this.input == Keys.Right || (this.input == Keys.Up || this.input == Keys.Down) || this.Selecting)
{
this.Focus();
}
else
{
WPTextBox.DestroyCaret();
}
}
private void SetCaretAtEnd(Graphics g)
{
this.CharIndex = this.Text.Length;
this.CalculateLines(g);
if (this.Text[this.Text.Length - 1] == '\n')
{
this.lineIndex = this.lines.Count;
WPTextBox.SetCaretPos(1, (this.lineIndex - 1) * this.lineHeight);
}
else
{
this.lineIndex = this.lines.Count - 1;
this.SetCaretAtNormalChar(g, false);
}
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (this.Focused)
{
this.CalculateCaretPos(e.Graphics, this.input);
this.input = Keys.F24;
this.SetCaretPosAtMouse(e.Graphics);
}
else
{
WPTextBox.HideCaret(this.Handle);
this.input = Keys.F24;
}
e.Graphics.DrawString(this.Text, this.Font, (Brush) new SolidBrush(this.ForeColor), new RectangleF(0.0f, (float)this.startY, (float)this.Width, (float)(this.Height - this.startY)), StringFormat.GenericDefault);
}
private void SetCaretAtPosX(Graphics g, int posX)
{
if (this.lineIndex == 1 && (this.Text[0] == '\r' || posX < 3))
{
this.CharIndex = 0;
WPTextBox.SetCaretPos(1, 0);
}
else if (this.lineIndex != 1 && this.lines[this.lineIndex - 1] + 1 < this.Text.Length && this.Text[this.lines[this.lineIndex - 1] + 1] == '\r')
{
this.CharIndex = this.lines[this.lineIndex - 1] + 1;
WPTextBox.SetCaretPos(1, (this.lineIndex - 1) * this.lineHeight + this.startY);
}
else
{
int First;
for (First = this.lines[this.lineIndex - 1] + 1; First <= this.lines[this.lineIndex]; ++First)
{
if (this.Text[First] == '\r')
{
this.CharIndex = First;
this.SetCaretAtNormalChar(g, false);
break;
}
CharacterRange[] ranges = new CharacterRange[1]
{
new CharacterRange(First, 1)
};
StringFormat stringFormat = new StringFormat();
stringFormat.SetMeasurableCharacterRanges(ranges);
stringFormat.FormatFlags = StringFormatFlags.MeasureTrailingSpaces;
RectangleF bounds = g.MeasureCharacterRanges(this.Text, this.Font, new RectangleF(0.0f, (float)this.startY, (float)this.Width, (float)this.maxHeight), stringFormat)[0].GetBounds(g);
if ((double)posX <= (double)bounds.X + (double)bounds.Width / 2.0)
{
this.CharIndex = First;
WPTextBox.SetCaretPos((int)bounds.Left, (int)bounds.Y);
break;
}
}
if (First <= this.lines[this.lineIndex])
{
return;
}
this.CharIndex = First;
this.SetCaretAtNormalChar(g, false);
}
}
private void SetCaretAtNormalChar(Graphics g, bool afterReturn)
{
if (this.CharIndex == 0)
{
WPTextBox.SetCaretPos(1, 0);
}
else
{
if (this.maxHeight == 0)
{
this.maxHeight = this.Height;
}
if (afterReturn)
{
CharacterRange[] ranges = new CharacterRange[1]
{
new CharacterRange(this.CharIndex, 1)
};
StringFormat stringFormat = new StringFormat();
stringFormat.SetMeasurableCharacterRanges(ranges);
stringFormat.FormatFlags = StringFormatFlags.MeasureTrailingSpaces;
RectangleF bounds = g.MeasureCharacterRanges(this.Text, this.Font, new RectangleF(0.0f, (float)this.startY, (float)this.Width, (float)this.maxHeight), stringFormat)[0].GetBounds(g);
WPTextBox.SetCaretPos((int)bounds.Left, (int)bounds.Top);
}
else
{
int num = (int)this.Text[this.CharIndex - 1];
CharacterRange[] ranges = new CharacterRange[1]
{
new CharacterRange(this.CharIndex - 1, 1)
};
StringFormat stringFormat = new StringFormat();
stringFormat.SetMeasurableCharacterRanges(ranges);
stringFormat.FormatFlags = StringFormatFlags.MeasureTrailingSpaces;
RectangleF bounds = g.MeasureCharacterRanges(this.Text, this.Font, new RectangleF(0.0f, (float)this.startY, (float)this.Width, (float)this.maxHeight), stringFormat)[0].GetBounds(g);
WPTextBox.SetCaretPos((int)bounds.Right, (int)bounds.Top);
}
}
}
private void CalculateLines(Graphics g)
{
if (!this.Modified)
{
return;
}
this.lines.Clear();
this.lines.Add(0);
StringFormat stringFormat = new StringFormat();
stringFormat.FormatFlags = StringFormatFlags.MeasureTrailingSpaces;
RectangleF layoutRect = new RectangleF(0.0f, (float)this.startY, (float)this.Width, (float)(this.Height - this.startY + this.lineHeight));
int First;
for (First = 0; First < this.Text.Length; ++First)
{
if (this.Text[First] == '\r')
{
this.lines.Add(++First);
}
else
{
CharacterRange[] ranges = new CharacterRange[1]
{
new CharacterRange(First, 1)
};
stringFormat.SetMeasurableCharacterRanges(ranges);
RectangleF bounds = g.MeasureCharacterRanges(this.Text, this.Font, layoutRect, stringFormat)[0].GetBounds(g);
if (this.input == Keys.End && (double)bounds.Height == 0.0 && this.Text[First] != ' ')
{
layoutRect.Height += (float)this.lineHeight;
--First;
}
else if ((double)bounds.Y > (double)(this.lineHeight * this.lines.Count + this.startY) - (double)bounds.Height / 2.0)
{
this.lines.Add(First - 1);
}
}
}
if ((double)layoutRect.Height > (double)this.maxHeight)
{
this.maxHeight = (int)layoutRect.Height;
}
if (First == this.Text.Length && this.lines[this.lines.Count - 1] != this.Text.Length - 1)
{
this.lines.Add(this.Text.Length - 1);
}
Point empty = Point.Empty;
WPTextBox.GetCaretPos(ref empty);
this.lineIndex = (int)((double)(empty.Y - this.startY) / (double)this.lineHeight + 1.5);
if (this.lineIndex < 1)
{
this.lineIndex = 1;
this.startY = 0;
}
if (this.CharIndex == this.Text.Length || this.lineIndex >= this.lines.Count)
{
this.lineIndex = this.Text[this.Text.Length - 1] != '\n' ? this.lines.Count - 1 : this.lines.Count;
}
if (this.input == Keys.End)
{
this.startY = this.Height - this.lineHeight * this.lines.Count;
if (this.startY > 0)
{
this.startY = 0;
}
}
this.Modified = false;
}
private void CalculateCaretPos(Graphics g, Keys input)
{
if (input == Keys.F24)
{
return;
}
if (this.Text.Length == 0)
{
WPTextBox.SetCaretPos(1, 1);
}
else
{
bool flag = false;
bool afterReturn = false;
Point empty1 = Point.Empty;
switch (input)
{
case Keys.Back:
this.Modified = true;
this.AutoScrollDown();
if (this.SelectionLength > 0)
{
this.Text = this.Text.Remove(this.SelectionStart, this.SelectionLength);
this.CharIndex = this.SelectionStart;
flag = false;
this.Selecting = false;
break;
}
this.Selecting = false;
--this.CharIndex;
if (this.CharIndex > 0)
{
if (this.Text[this.CharIndex] == '\n')
{
this.Text = this.Text.Remove(--this.CharIndex, 2);
if (this.CharIndex <= 0)
{
WPTextBox.SetCaretPos(1, 0);
this.CharIndex = 0;
flag = true;
break;
}
if (this.Text[this.CharIndex - 1] == '\n')
{
WPTextBox.GetCaretPos(ref empty1);
WPTextBox.SetCaretPos(1, empty1.Y - this.lineHeight);
flag = true;
break;
}
flag = false;
break;
}
this.Text = this.Text.Remove(this.CharIndex, 1);
if (this.Text[this.CharIndex - 1] == '\n')
{
WPTextBox.GetCaretPos(ref empty1);
WPTextBox.SetCaretPos(1, empty1.Y);
flag = true;
break;
}
flag = false;
break;
}
if (this.CharIndex == 0)
{
this.Text = this.Text.Remove(this.CharIndex, 1);
WPTextBox.SetCaretPos(1, 0);
flag = true;
break;
}
this.CharIndex = 0;
this.lineIndex = 1;
flag = true;
break;
case Keys.Return:
this.Modified = true;
this.AutoScrollUp();
WPTextBox.GetCaretPos(ref empty1);
WPTextBox.SetCaretPos(1, empty1.Y + this.lineHeight);
flag = true;
break;
case Keys.End:
this.Modified = true;
this.CalculateLines(g);
this.SetCaretAtEnd(g);
flag = true;
break;
case Keys.Home:
this.CharIndex = 0;
this.startY = 0;
this.lineIndex = 1;
WPTextBox.SetCaretPos(1, 1);
flag = true;
break;
case Keys.Left:
this.Modified = true;
this.AutoScrollDown();
if (--this.CharIndex <= 0)
{
this.CharIndex = 0;
this.lineIndex = 1;
WPTextBox.SetCaretPos(1, 0);
flag = true;
break;
}
if (this.Text[this.CharIndex - 1] != '\n' && this.Text[this.CharIndex - 1] != '\r')
{
flag = false;
break;
}
if (this.Text[this.CharIndex - 1] == '\n')
{
afterReturn = true;
flag = false;
break;
}
if (this.Text[this.CharIndex] == '\n')
{
--this.CharIndex;
if (this.CharIndex <= 0)
{
WPTextBox.SetCaretPos(1, 0);
this.CharIndex = 0;
flag = true;
break;
}
if (this.Text[this.CharIndex - 1] == '\n')
{
WPTextBox.GetCaretPos(ref empty1);
WPTextBox.SetCaretPos(1, empty1.Y - this.lineHeight);
flag = true;
break;
}
flag = false;
break;
}
break;
case Keys.Up:
this.CalculateLines(g);
this.AutoScrollDown();
if (this.lineIndex > 1)
{
--this.lineIndex;
WPTextBox.GetCaretPos(ref empty1);
this.SetCaretAtPosX(g, empty1.X);
}
flag = true;
break;
case Keys.Right:
this.Modified = true;
if (++this.CharIndex > this.Text.Length)
{
this.CharIndex = this.Text.Length;
flag = true;
break;
}
this.AutoScrollUp();
if (this.CharIndex < this.Text.Length && (this.Text[this.CharIndex - 1] == '\r' || this.Text[this.CharIndex - 1] == '\n'))
{
if (this.Text[this.CharIndex - 1] == '\r')
{
++this.CharIndex;
}
WPTextBox.GetCaretPos(ref empty1);
WPTextBox.SetCaretPos(1, empty1.Y + this.lineHeight);
flag = true;
break;
}
flag = false;
break;
case Keys.Down:
this.CalculateLines(g);
this.AutoScrollUp();
if (this.lineIndex < this.lines.Count)
{
++this.lineIndex;
if (this.lineIndex == this.lines.Count)
{
this.lineIndex = this.lines.Count - 1;
this.SetCaretAtEnd(g);
}
else
{
Point empty2 = Point.Empty;
WPTextBox.GetCaretPos(ref empty2);
this.SetCaretAtPosX(g, empty2.X);
}
}
flag = true;
break;
case Keys.Delete:
this.Modified = true;
if (this.SelectionLength > 0)
{
this.Text = this.Text.Remove(this.SelectionStart, this.SelectionLength);
this.CharIndex = this.SelectionStart;
flag = false;
this.Selecting = false;
break;
}
if (this.CharIndex == this.Text.Length)
{
flag = true;
break;
}
if (this.Text[this.CharIndex] == '\r')
{
this.Text = this.Text.Remove(this.CharIndex, 2);
}
else
{
this.Text = this.Text.Remove(this.CharIndex, 1);
}
flag = true;
break;
default:
if (this.DialogChar)
{
this.DialogChar = false;
flag = false;
break;
}
break;
}
if (!flag)
{
this.SetCaretAtNormalChar(g, afterReturn);
}
input = Keys.F24;
}
}
protected override void OnGotFocus(EventArgs e)
{
this.lineHeight = this.Font.Height;
WPTextBox.CreateCaret(this.Handle, new IntPtr(0), 1, this.lineHeight);
WPTextBox.ShowCaret(this.Handle);
}
