/// <summary>
/// Handle mouse move to handle hover cursor and text selection.
/// </summary>
/// <param name="parent">the control hosting the html to set cursor and invalidate</param>
/// <param name="loc">the location of the mouse on the html</param>
public void HandleMouseMove(RControl parent, RPoint loc)
{
if (_root.HtmlContainer.IsSelectionEnabled && _mouseDownInControl && parent.LeftMouseButton)
{
if (_mouseDownOnSelectedWord)
{
// make sure not to start drag-drop on click but when it actually moves as it f***s mouse-up
if ((DateTime.Now - _lastMouseDown).TotalMilliseconds > 200)
StartDragDrop(parent);
}
else
{
HandleSelection(parent, loc, !_isDoubleClickSelect);
_inSelection = _selectionStart != null && _selectionEnd != null && (_selectionStart != _selectionEnd || _selectionStartIndex != _selectionEndIndex);
}
}
else
{
// Handle mouse hover over the html to change the cursor depending if hovering word, link of other.
var link = DomUtils.GetLinkBox(_root, loc);
if (link != null)
{
_cursorChanged = true;
parent.SetCursorHand();
if (link != _lastLink)
{
_root.HtmlContainer.HandleLinkHover(parent, loc, link);
_lastLink = link;
}
}
else if (_root.HtmlContainer.IsSelectionEnabled)
{
var word = DomUtils.GetCssBoxWord(_root, loc);
_cursorChanged = word != null && !word.IsImage && !(word.Selected && (word.SelectedStartIndex < 0 || word.Left + word.SelectedStartOffset <= loc.X) && (word.SelectedEndOffset < 0 || word.Left + word.SelectedEndOffset >= loc.X));
if (_cursorChanged)
parent.SetCursorIBeam();
else
parent.SetCursorDefault();
_lastLink = null;
}
else if (_cursorChanged)
{
parent.SetCursorDefault();
_lastLink = null;
}
}
}
/// <summary>
/// On mouse leave change the cursor back to default.
/// </summary>
/// <param name="parent">the control hosting the html to set cursor and invalidate</param>
public void HandleMouseLeave(RControl parent)
{
if (_cursorChanged)
{
_cursorChanged = false;
parent.SetCursorDefault();
}
}