|
private GetRectFromCharacterIndex ( int charIndex ) : |
||
| charIndex | int | |
| return | ||
//returns [0]=Rect of char at end of first line, [1]=Rect of char at start of second line
Rect[] FindStartEndOfVisualLineRects(int start, Rect startRect)
{
int next = start, len = tb.Text.Length;
Rect nextRect, prevRect = startRect;
while ((next = start + 1) < len)
{
nextRect = tb.GetRectFromCharacterIndex(next); //next.GetCharacterRect(LogicalDirection.Forward);
if (nextRect.Top != startRect.Top)
{
return new Rect[2] {
prevRect, nextRect
}
}
;
prevRect = nextRect;
}
return(null);
}
private static void PositionCaret(TextBox textBox, UIElement caretElement)
{
var caretLocation = textBox.GetRectFromCharacterIndex(textBox.Text.Length).Location;
if (!double.IsInfinity(caretLocation.X))
{
Canvas.SetLeft(caretElement, caretLocation.X);
}
if (!double.IsInfinity(caretLocation.Y))
{
Canvas.SetTop(caretElement, caretLocation.Y);
}
}
private static int GetCaretIndexFromPoint(TextBox textBox, Point point)
{
var index = textBox.GetCharacterIndexFromPoint(point, true);
if (index != textBox.Text.Length - 1)
return index;
var caretRect = textBox.GetRectFromCharacterIndex(index);
var caretPoint = new Point(caretRect.X, caretRect.Y);
if (point.X > caretPoint.X)
index += 1;
return index;
}
private void AutoReplace(TextBox txt)
{
string GotLastWord = "";
string ReplacedWord = "";
int lastWord = txt.Text.LastIndexOf(" ");
lastWord = lastWord + 1;
GotLastWord = txt.Text.Substring(lastWord);
if (Abbrev.ContainsKey(GotLastWord))
{
ReplacedWord = GotLastWord.Replace(GotLastWord, Abbrev[GotLastWord]);
txt.Text = txt.Text.Replace(GotLastWord, ReplacedWord);
txt.SelectionStart = txt.Text.Length;
txt.GetRectFromCharacterIndex(txt.CaretIndex);
}
}
// This method is to workaround the fact that textbox.GetCharacterIndexFromPoint returns the caret
// to the left of the character... Thus you can never get the caret after the last character in the
// expression string.
int GetCharacterIndexFromPoint(TextBox textbox)
{
Point position = Mouse.GetPosition(textbox);
int index = textbox.GetCharacterIndexFromPoint(position, false);
if (index < 0)
{
// May have clicked outside the text area, get the index of nearest char
index = textbox.GetCharacterIndexFromPoint(position, true);
if (index < 0)
{
index = 0;
}
// Adjust the cursor position if we clicked to the right of returned character
Rect charRect = textbox.GetRectFromCharacterIndex(index, true);
if (position.X > charRect.Left + charRect.Width / 2)
{
index++;
}
}
return index;
}
private static void OpenPopup(TextBox textBox, Popup popup, int index)
{
popup.PlacementTarget = textBox;
var rect = textBox.GetRectFromCharacterIndex(Math.Max(0, index));
rect.Offset(GetPopupOffset(textBox));
popup.PlacementRectangle = rect;
popup.IsOpen = true;
}
//Handle textbox IntelliSense.
private void IDETabs_PreviewKeyDown(object sender, KeyEventArgs e)
{
if (sender.GetType() == typeof(TabControl))
{
txtboxCurrentIDECode = (TextBox)((TabItem)((TabControl)sender).SelectedItem).Content;
if (txtboxCurrentIDECode != null)
ViewModelIntellisense.showMethodsPopUP(txtboxCurrentIDECode.GetRectFromCharacterIndex(txtboxCurrentIDECode.CaretIndex), txtboxCurrentIDECode, popup, list, e);
}
}
