void ApplyStyle()
{
HorizontalAlignment horAlignment = BindingCell.ToHorizontalAlignment();
if (_tb.HorizontalAlignment != horAlignment)
{
_tb.HorizontalAlignment = horAlignment;
}
// uno绘制Right位置错误，慎用TextAlignment！
//Windows.UI.Xaml.TextAlignment textAlignment;
//switch (horAlignment)
//{
// case HorizontalAlignment.Center:
// textAlignment = Windows.UI.Xaml.TextAlignment.Center;
// break;
// case HorizontalAlignment.Right:
// textAlignment = Windows.UI.Xaml.TextAlignment.Right;
// break;
// default:
// textAlignment = Windows.UI.Xaml.TextAlignment.Left;
// break;
//}
//if (_tb.TextAlignment != textAlignment)
// _tb.TextAlignment = textAlignment;
VerticalAlignment verAlignment;
switch (BindingCell.ActualVerticalAlignment)
{
case CellVerticalAlignment.Top:
verAlignment = VerticalAlignment.Top;
break;
case CellVerticalAlignment.Bottom:
verAlignment = VerticalAlignment.Bottom;
break;
default:
verAlignment = VerticalAlignment.Center;
break;
}
if (_tb.VerticalAlignment != verAlignment)
{
_tb.VerticalAlignment = verAlignment;
}
var foreground = BindingCell.ActualForeground;
if (foreground == null)
{
// 默认黑色
if (_tb.ReadLocalValue(TextBlock.ForegroundProperty) != DependencyProperty.UnsetValue)
{
_tb.ClearValue(TextBlock.ForegroundProperty);
}
}
else if (foreground != _tb.Foreground)
{
_tb.Foreground = foreground;
}
var fontStyle = BindingCell.ActualFontStyle;
if (_tb.FontStyle != fontStyle)
{
_tb.FontStyle = fontStyle;
}
var fontWeight = BindingCell.ActualFontWeight;
if (_tb.FontWeight.Weight != fontWeight.Weight)
{
_tb.FontWeight = fontWeight;
}
var fontFamily = BindingCell.ActualFontFamily;
if (fontFamily != null && _tb.FontFamily.Source != fontFamily.Source)
{
_tb.FontFamily = fontFamily;
}
bool wrap = BindingCell.ActualWordWrap;
TextWrapping textWrap = wrap ? TextWrapping.Wrap : TextWrapping.NoWrap;
if (_tb.TextWrapping != textWrap)
{
_tb.TextWrapping = textWrap;
}
double fontSize = BindingCell.ActualFontSize * ZoomFactor;
double fitZoom = -1;
if (!wrap && BindingCell.ActualShrinkToFit)
{
// 自动缩小字体适应单元格宽度
double textWidth = MeasureHelper.MeasureText(
_tb.Text,
_tb.FontFamily,
fontSize,
_tb.FontStretch,
_tb.FontStyle,
_tb.FontWeight,
new Size(double.PositiveInfinity, double.PositiveInfinity),
false,
null,
_tb.UseLayoutRounding,
ZoomFactor).Width;
double cellWidth = BindingCell.Worksheet.GetActualColumnWidth(BindingCell.Column.Index, BindingCell.ColumnSpan, BindingCell.SheetArea) * ZoomFactor;
cellWidth = MeasureHelper.ConvertExcelCellSizeToTextSize(new Size(cellWidth, double.PositiveInfinity), ZoomFactor).Width;
cellWidth = Math.Max((double)0.0, (double)(cellWidth - BindingCell.ActualTextIndent * ZoomFactor));
if (cellWidth < textWidth)
{
fitZoom = cellWidth / textWidth;
}
}
if (fitZoom > 0)
{
fontSize *= fitZoom;
}
if (_tb.FontSize != fontSize)
{
_tb.FontSize = fontSize;
}
// TextBlock设置Padding时，若Padding左右之和大于Measure时给的Width，uno莫名报错，布局混乱，不易发现！
Thickness margin = new Thickness();
var indent = BindingCell.ActualTextIndent * ZoomFactor;
if (indent > 0 && _tb.HorizontalAlignment != HorizontalAlignment.Center)
{
if (_tb.HorizontalAlignment == HorizontalAlignment.Right)
{
margin.Right += indent;
}
else
{
margin.Left += indent;
}
}
if (_tb.Margin != margin)
{
_tb.Margin = margin;
}
// 未用到
//var fontStretch = BindingCell.ActualFontStretch;
//if (_tb.FontStretch != fontStretch)
// _tb.FontStretch = fontStretch;
if (BindingCell.ActualUnderline)
{
Underline underline = new Underline();
Run run = new Run();
run.Text = _tb.Text;
underline.Inlines.Add(run);
_tb.Inlines.Clear();
_tb.Inlines.Add(underline);
_lastUnderline = true;
}
else if (_lastUnderline)
{
string str = _tb.Text;
_tb.Inlines.Clear();
_tb.Text = str;
}
if (BindingCell.ActualStrikethrough)
{
foreach (UIElement element in (_tb.Parent as Panel).Children)
{
if (element is StrikethroughView)
{
StrikethroughView view = element as StrikethroughView;
if (view.LineContainer != null)
{
foreach (var line in view.LineContainer.Children.OfType <Line>())
{
line.Stroke = _tb.Foreground;
}
}
break;
}
}
}
}
protected override Size ArrangeOverride(Size finalSize)
{
if (Column == -1 || finalSize.Width < _textPadding * 2)
{
foreach (UIElement elem in Children)
{
elem.Arrange(_rcEmpty);
}
return(_szEmpty);
}
Rect?nullable = null;
if (_overflowLayout != null && _overflowLayout.ContentWidth > finalSize.Width)
{
double w;
double left = 0;
switch (BindingCell.ToHorizontalAlignment())
{
case HorizontalAlignment.Left:
case HorizontalAlignment.Stretch:
left = _textPadding;
w = _overflowLayout.RightBackgroundWidth;
if (w >= 0.0)
{
nullable = new Rect(0.0, 0.0, w, finalSize.Height);
}
break;
case HorizontalAlignment.Right:
left = finalSize.Width - _overflowLayout.LeftBackgroundWidth;
w = _overflowLayout.LeftBackgroundWidth;
if (w >= 0.0)
{
nullable = new Rect(left, 0.0, w, finalSize.Height);
}
break;
default:
left -= (_overflowLayout.ContentWidth - finalSize.Width) / 2.0;
double x = 0.0;
if (_overflowLayout.LeftBackgroundWidth > 0.0)
{
x = (finalSize.Width / 2.0) - _overflowLayout.LeftBackgroundWidth;
}
w = _overflowLayout.BackgroundWidth;
if (w >= 0.0)
{
nullable = new Rect(x, 0.0, w, finalSize.Height);
}
break;
}
_tb.Arrange(new Rect(left, 0, _overflowLayout.ContentWidth + _textPadding * 2, finalSize.Height));
}
else
{
// 文字默认边距：4,0,4,0
_tb.Arrange(new Rect(_textPadding, 0, finalSize.Width - _textPadding * 2, finalSize.Height));
}
if ((_cachedClip.HasValue != nullable.HasValue) || (_cachedClip.HasValue && (_cachedClip.Value != nullable.Value)))
{
_cachedClip = nullable;
if (nullable.HasValue)
{
Clip = new RectangleGeometry {
Rect = nullable.Value
};
}
else
{
ClearValue(ClipProperty);
}
}
if (Children.Count > 1)
{
Rect rect = new Rect(new Point(), finalSize);
for (int i = 1; i < Children.Count; i++)
{
((UIElement)Children[i]).Arrange(rect);
}
}
return(finalSize);
}
