private void RenderSelection(RenderContext context)
{
var bounds = ActualBounds;
if (string.IsNullOrEmpty(Text) || Selection == null)
{
return;
}
var selectStart = Math.Min(SelectStart, SelectEnd);
var selectEnd = Math.Max(SelectStart, SelectEnd);
if (selectStart >= selectEnd)
{
return;
}
var startGlyph = _formattedText.GetGlyphInfoByIndex(selectStart);
if (startGlyph == null)
{
return;
}
var lineIndex = startGlyph.TextChunk.LineIndex;
var i = selectStart;
var lineHeight = _formattedText.Font.FontSize;
while (true)
{
startGlyph = _formattedText.GetGlyphInfoByIndex(i);
var startPosition = GetRenderPositionByIndex(i);
var line = _formattedText.Lines[startGlyph.TextChunk.LineIndex];
if (selectEnd < line.TextStartIndex + line.Count)
{
var endPosition = GetRenderPositionByIndex(selectEnd);
Selection.Draw(context,
new Rectangle(startPosition.X - _internalScrolling.X,
startPosition.Y - _internalScrolling.Y,
endPosition.X - startPosition.X,
lineHeight));
break;
}
Selection.Draw(context,
new Rectangle(startPosition.X - _internalScrolling.X,
startPosition.Y - _internalScrolling.Y,
bounds.Left + startGlyph.TextChunk.Size.X - startPosition.X,
lineHeight));
++lineIndex;
if (lineIndex >= _formattedText.Lines.Count)
{
break;
}
i = _formattedText.Lines[lineIndex].TextStartIndex;
}
}
public override void InternalRender(RenderContext context)
{
if (_formattedText.Font == null)
{
return;
}
var bounds = ActualBounds;
RenderSelection(context);
var textColor = TextColor;
var oldOpacity = context.Opacity;
if (HintTextEnabled)
{
context.Opacity *= 0.5f;
}
else if (!Enabled && DisabledTextColor != null)
{
textColor = DisabledTextColor.Value;
}
else if (IsKeyboardFocused && FocusedTextColor != null)
{
textColor = FocusedTextColor.Value;
}
var centeredBounds = LayoutUtils.Align(new Point(bounds.Width, bounds.Height), _formattedText.Size, HorizontalAlignment.Left, TextVerticalAlignment);
centeredBounds.Offset(bounds.Location);
var p = new Point(centeredBounds.Location.X - _internalScrolling.X,
centeredBounds.Location.Y - _internalScrolling.Y);
_formattedText.Draw(context, TextAlign.Left, new Rectangle(p.X, p.Y, bounds.Width, bounds.Height), context.View, textColor, false);
if (!IsKeyboardFocused)
{
// Skip cursor rendering if the widget doesnt have the focus
return;
}
var now = DateTime.Now;
if ((now - _lastBlinkStamp).TotalMilliseconds >= BlinkIntervalInMs)
{
_cursorOn = !_cursorOn;
_lastBlinkStamp = now;
}
if (Enabled && _cursorOn && Cursor != null)
{
p = GetRenderPositionByIndex(CursorPosition);
p.X -= _internalScrolling.X;
p.Y -= _internalScrolling.Y;
Cursor.Draw(context,
new Rectangle(p.X, p.Y,
Cursor.Size.X,
_formattedText.Font.FontSize));
}
context.Opacity = oldOpacity;
}
private void RenderSelection(RenderContext context)
{
var bounds = ActualBounds;
switch (GridSelectionMode)
{
case GridSelectionMode.None:
break;
case GridSelectionMode.Row:
{
if (HoverRowIndex != null && HoverRowIndex != SelectedRowIndex &&
SelectionHoverBackground != null)
{
var rect = Rectangle.Intersect(new Rectangle(bounds.Left,
_cellLocationsY[HoverRowIndex.Value] + bounds.Top - RowSpacing / 2,
bounds.Width,
_rowHeights[HoverRowIndex.Value] + RowSpacing), context.View);
SelectionHoverBackground.Draw(context, rect);
}
if (SelectedRowIndex != null && SelectionBackground != null)
{
var rect = Rectangle.Intersect(new Rectangle(bounds.Left,
_cellLocationsY[SelectedRowIndex.Value] + bounds.Top - RowSpacing / 2,
bounds.Width,
_rowHeights[SelectedRowIndex.Value] + RowSpacing), context.View);
SelectionBackground.Draw(context, rect);
}
}
break;
case GridSelectionMode.Column:
{
if (HoverColumnIndex != null && HoverColumnIndex != SelectedColumnIndex &&
SelectionHoverBackground != null)
{
var rect = Rectangle.Intersect(new Rectangle(
_cellLocationsX[HoverColumnIndex.Value] + bounds.Left - ColumnSpacing / 2,
bounds.Top,
_colWidths[HoverColumnIndex.Value] + ColumnSpacing,
bounds.Height), context.View);
SelectionHoverBackground.Draw(context, rect);
}
if (SelectedColumnIndex != null && SelectionBackground != null)
{
var rect = Rectangle.Intersect(new Rectangle(
_cellLocationsX[SelectedColumnIndex.Value] + bounds.Left - ColumnSpacing / 2,
bounds.Top,
_colWidths[SelectedColumnIndex.Value] + ColumnSpacing,
bounds.Height), context.View);
SelectionBackground.Draw(context, rect);
}
}
break;
case GridSelectionMode.Cell:
{
if (HoverRowIndex != null && HoverColumnIndex != null &&
(HoverRowIndex != SelectedRowIndex || HoverColumnIndex != SelectedColumnIndex) &&
SelectionHoverBackground != null)
{
var rect = Rectangle.Intersect(new Rectangle(
_cellLocationsX[HoverColumnIndex.Value] + bounds.Left - ColumnSpacing / 2,
_cellLocationsY[HoverRowIndex.Value] + bounds.Top - RowSpacing / 2,
_colWidths[HoverColumnIndex.Value] + ColumnSpacing,
_rowHeights[HoverRowIndex.Value] + RowSpacing), context.View);
SelectionHoverBackground.Draw(context, rect);
}
if (SelectedRowIndex != null && SelectedColumnIndex != null && SelectionBackground != null)
{
var rect = Rectangle.Intersect(new Rectangle(
_cellLocationsX[SelectedColumnIndex.Value] + bounds.Left - ColumnSpacing / 2,
_cellLocationsY[SelectedRowIndex.Value] + bounds.Top - RowSpacing / 2,
_colWidths[SelectedColumnIndex.Value] + ColumnSpacing,
_rowHeights[SelectedRowIndex.Value] + RowSpacing), context.View);
SelectionBackground.Draw(context, rect);
}
}
break;
}
}