public HitTestingVisitor(DrawContext dc, DrawingUtils.Metrics mtx, int clieckedPointX, int lineIndex)
{
ctx = dc;
ClickedPointX = clieckedPointX;
m = mtx;
TextLineIndex = lineIndex;
}
public static void MouseMoveHelper(
IPresentationDataAccess presentationDataAccess,
DrawContext drawContext,
Rectangle clientRectangle,
IViewEvents viewEvents,
Point pt,
bool isLeftDrag,
out CursorType newCursor
)
{
newCursor = CursorType.Arrow;
if (presentationDataAccess != null)
{
foreach (var i in DrawingUtils.GetVisibleMessagesIterator(drawContext, presentationDataAccess, clientRectangle))
{
DrawingUtils.Metrics mtx = DrawingUtils.GetMetrics(i, drawContext);
if (pt.Y >= mtx.MessageRect.Top && pt.Y < mtx.MessageRect.Bottom)
{
if (isLeftDrag)
{
var hitTester = new HitTestingVisitor(drawContext, mtx, pt.X, i.TextLineIndex);
i.Message.Visit(hitTester);
MessageMouseEventFlag flags = MessageMouseEventFlag.ShiftIsHeld
| MessageMouseEventFlag.CapturedMouseMove;
if (pt.X < drawContext.CollapseBoxesAreaSize)
{
flags |= MessageMouseEventFlag.OulineBoxesArea;
}
viewEvents.OnMessageMouseEvent(i, hitTester.LineTextPosition, flags, pt);
}
if (i.Message.IsStartFrame() && mtx.OulineBox.Contains(pt))
{
newCursor = CursorType.Arrow;
}
else if (pt.X < drawContext.CollapseBoxesAreaSize)
{
newCursor = CursorType.RightToLeftArrow;
}
else if (pt.X >= drawContext.GetTextOffset(0, 0).X)
{
newCursor = CursorType.IBeam;
}
else
{
newCursor = CursorType.Arrow;
}
}
}
}
}
public static void MouseDownHelper(
IPresentationDataAccess presentationDataAccess,
DrawContext drawContext,
Rectangle clientRectangle,
IViewEvents viewEvents,
Point pt,
MessageMouseEventFlag flags,
out bool captureTheMouse
)
{
captureTheMouse = true;
if (presentationDataAccess != null)
{
foreach (var i in DrawingUtils.GetVisibleMessagesIterator(drawContext, presentationDataAccess, clientRectangle))
{
DrawingUtils.Metrics mtx = DrawingUtils.GetMetrics(i, drawContext);
// if user clicked line's outline box (collapse/expand cross)
if (i.Message.IsStartFrame() && mtx.OulineBox.Contains(pt.X, pt.Y) && i.TextLineIndex == 0)
//if (viewEvents.OnOulineBoxClicked(i.Message, (flags & MessageMouseEventFlag.CtrlIsHeld) != 0))
{
captureTheMouse = false;
break;
}
// if user clicked line area
if (mtx.MessageRect.Contains(pt.X, pt.Y))
{
var hitTester = new HitTestingVisitor(drawContext, mtx, pt.X, i.TextLineIndex);
i.Message.Visit(hitTester);
if ((flags & MessageMouseEventFlag.DblClick) != 0)
{
captureTheMouse = false;
}
if (pt.X < drawContext.CollapseBoxesAreaSize)
{
flags |= MessageMouseEventFlag.OulineBoxesArea;
}
viewEvents.OnMessageMouseEvent(i, hitTester.LineTextPosition, flags, pt);
break;
}
}
}
}
public static void PaintControl(DrawContext drawContext, IPresentationDataAccess presentationDataAccess,
SelectionInfo selection, bool controlIsFocused, Rectangle dirtyRect, out int maxRight)
{
var drawingVisitor = new DrawingVisitor();
drawingVisitor.ctx = drawContext;
drawingVisitor.SearchResultHighlightingHandler = presentationDataAccess.CreateSearchResultHighlightingHandler();
drawingVisitor.SelectionHighlightingHandler = presentationDataAccess.CreateSelectionHighlightingHandler();
drawingVisitor.HighlightingFiltersHandler = presentationDataAccess.CreateHighlightingFiltersHandler();
maxRight = 0;
var sel = selection;
bool needToDrawCursor = drawContext.CursorState == true && controlIsFocused && sel.First.Message != null;
var messagesToDraw = DrawingUtils.GetVisibleMessages(drawContext, presentationDataAccess, dirtyRect);
var displayLinesEnum = presentationDataAccess.GetViewLines(messagesToDraw.begin, messagesToDraw.end);
foreach (var il in displayLinesEnum)
{
drawingVisitor.DisplayIndex = il.LineIndex;
drawingVisitor.TextLineIdx = il.TextLineIndex;
drawingVisitor.IsBookmarked = il.IsBookmarked;
DrawingUtils.Metrics m = DrawingUtils.GetMetrics(il, drawContext);
drawingVisitor.m = m;
if (needToDrawCursor && sel.First.DisplayIndex == il.LineIndex)
{
drawingVisitor.CursorPosition = sel.First;
}
else
{
drawingVisitor.CursorPosition = null;
}
il.Message.Visit(drawingVisitor);
maxRight = Math.Max(maxRight, m.OffsetTextRect.Right);
}
DrawFocusedMessageMark(drawContext, presentationDataAccess, messagesToDraw);
drawingVisitor.SearchResultHighlightingHandler?.Dispose();
drawingVisitor.SelectionHighlightingHandler?.Dispose();
drawingVisitor.HighlightingFiltersHandler?.Dispose();
}