//[Test]
public void TestCharPosition01()
{
//Test to make sure origin is correct
//Character coordinates input: (0,0)
//Screen coordinates expected: (Configurations.LeftMargin, 0)
coordinates.SetCharacterPosition(new System.Drawing.Point(0, 0));
Assert.IsTrue((System.Windows.Point)coordinates.GetScreenPosition() == new Point(Configurations.CanvasMarginLeft, 0));
}
internal void UpdateCaretPosition(bool ensureCursorVisible = true)
{
if (null == Solution.Current.ActiveScript)
{
return;
}
IScriptObject activeScript = Solution.Current.ActiveScript;
CharPosition converter = activeScript.CreateCharPosition();
System.Drawing.Point cursorPosition = textCore.CursorPosition;
converter.SetCharacterPosition(cursorPosition);
textCanvas.SetCursorScreenPos(converter.GetScreenPosition());
if (ensureCursorVisible == true)
{
textCanvas.EnsureCursorVisible(cursorPosition.X, cursorPosition.Y);
}
// As the caret is moved around, more often than never the selection also
// gets changed. It would make sense to update the visual here at the same time.
textCanvas.SetSelectionRange(textCore.SelectionStart, textCore.SelectionEnd);
// @TODO(Salman) merge these into one label control.
LineCol.Text = "Line: " + Convert.ToString(cursorPosition.Y + 1) + " " + "Col: " + Convert.ToString(cursorPosition.X + 1);
}
public System.Windows.Point TranslateToScreenPoint(System.Drawing.Point charPosition)
{
IScriptObject activeScript = Solution.Current.ActiveScript;
CharPosition position = activeScript.CreateCharPosition();
position.SetCharacterPosition(charPosition.X, charPosition.Y);
System.Windows.Point result = position.GetScreenPosition();
// The screen position needs offset based on the current scroll position.
result.Offset(-scrollViewer.HorizontalOffset, -scrollViewer.VerticalOffset);
return(result);
}
private void OnDragOver(object sender, DragEventArgs e)
{
e.Effects = DragDropEffects.Move;
if ((e.KeyStates & DragDropKeyStates.ControlKey) != 0)
{
e.Effects = DragDropEffects.Copy;
}
// First, validate arbitrary screen coordinates...
IScriptObject activeScript = Solution.Current.ActiveScript;
CharPosition mousePoint = activeScript.CreateCharPosition();
mousePoint.SetScreenPosition(GetRelativeCanvasPosition(e));
// Here when the content is dragged to the first line in view, try to
// bring it onto the previous line. This is so that the previous line
// gets to scroll into view later on. If the cursor is on the last
// visible line, then try to set it one line beyond that. This is so
// that the next line get to scroll into view the same way.
//
int characterY = mousePoint.CharacterY;
int lastVisibleLine = textCanvas.FirstVisibleLine + textCanvas.MaxVisibleLines;
if (characterY == textCanvas.FirstVisibleLine)
{
characterY = characterY - 1;
}
else if (characterY >= lastVisibleLine - 1)
{
characterY = characterY + 1;
}
mousePoint.SetCharacterPosition(mousePoint.CharacterX, characterY);
// Then get the precised cursor coordinates, and then set the
// character position so we get screen coordinates at character
// boundaries...
System.Drawing.Point cursor = mousePoint.GetCharacterPosition();
mousePoint.SetCharacterPosition(cursor);
textCanvas.SetCursorScreenPos(mousePoint.GetScreenPosition());
textCanvas.EnsureCursorVisible(mousePoint.CharacterX, mousePoint.CharacterY);
}