public TextBlockPropertiesViewModel(IElementTextBlock element, CommonDesignerCanvas designerCanvas)
{
Title = "Свойства фигуры: Надпись";
ElementTextBlock = element;
PositionSettingsViewModel = new PositionSettingsViewModel(element as ElementBase, designerCanvas);
CopyProperties();
Fonts = new List<string>();
foreach (var fontfamily in System.Drawing.FontFamily.Families)
Fonts.Add(fontfamily.Name);
TextAlignments = new List<string>()
{
"По левому краю",
"По правому краю",
"По центру",
};
VerticalAlignments = new List<string>()
{
"По верхнему краю",
"По середине",
"По нижнему краю",
};
}
/// <summary>
/// Рендерит IElementTextBlock
/// </summary>
/// <param name="item">Элемент</param>
/// <param name="size">Размеры контейнера</param>
/// <param name="left">Координата X</param>
/// <param name="top">Координата Y</param>
/// <param name="showHint">Показывать всплывающую подсказку.</param>
/// <returns></returns>
private static PlanElement FromTextElement(IElementTextBlock item, System.Windows.Size size, double left, double top, bool showHint)
{
if (string.IsNullOrWhiteSpace(item.Text))
{
return null;
}
var fontFamily = new System.Windows.Media.FontFamily(item.FontFamilyName);
var fontStyle = item.FontItalic ? FontStyles.Italic : FontStyles.Normal;
var fontWeight = item.FontBold ? FontWeights.Bold : FontWeights.Normal;
var text = new FormattedText(
item.Text, CultureInfo.InvariantCulture, FlowDirection.LeftToRight,
new Typeface(fontFamily, fontStyle, fontWeight, FontStretches.Normal), item.FontSize, new SolidColorBrush(item.ForegroundColor.ToWindowsColor()))
{
Trimming = TextTrimming.WordEllipsis,
MaxLineCount = item.WordWrap ? int.MaxValue : 1
};
// Делаем первый рендер без трансформаций
var pathGeometry = text.BuildGeometry(new Point(left + item.BorderThickness, top + item.BorderThickness));
// Добавляем Scale-трансформацию, если включен Stretch, либо Translate-трансформацию
if (item.Stretch)
{
var scaleFactorX = (size.Width - item.BorderThickness * 2) / text.Width;
var scaleFactorY = (size.Height - item.BorderThickness * 2) / text.Height;
pathGeometry = Geometry.Combine(Geometry.Empty, pathGeometry, GeometryCombineMode.Union, new ScaleTransform(
scaleFactorX, scaleFactorY, left + item.BorderThickness, top + item.BorderThickness));
}
else
{
double offsetX = 0;
double offsetY = 0;
switch (item.TextAlignment)
{
case 1:
{
offsetX = size.Width - item.BorderThickness * 2 - text.Width;
break;
}
case 2:
{
offsetX = (size.Width - item.BorderThickness * 2 - text.Width) / 2;
break;
}
}
switch (item.VerticalAlignment)
{
case 1:
{
offsetY = (size.Height - item.BorderThickness * 2 - text.Height) / 2;
break;
}
case 2:
{
offsetY = size.Height - item.BorderThickness * 2 - text.Height;
break;
}
}
pathGeometry = Geometry.Combine(Geometry.Empty, pathGeometry, GeometryCombineMode.Union, new TranslateTransform(offsetX, offsetY));
}
// Делаем финальный рендер
var path = pathGeometry.GetFlattenedPathGeometry().ToString(CultureInfo.InvariantCulture).Substring(2);
var shape = new PlanElement
{
Path = path,
Border = InternalConverter.ConvertColor(Colors.Transparent),
Fill = InternalConverter.ConvertColor(item.ForegroundColor.ToWindowsColor()),
Name = item.PresentationName,
Id = "pe" + item.UID,
Hint = (item as ElementBase) != null && showHint ? GetElementHint((ElementBase)item) : null,
BorderThickness = 0,
Type = ShapeTypes.Path.ToString(),
HasOverlay = false
};
return shape;
}
