void EnsureResources(ICanvasResourceCreatorWithDpi resourceCreator, Size targetSize)
{
if (!needsResourceRecreation)
{
return;
}
if (textLayout != null)
{
textLayout.Dispose();
textReference.Dispose();
textBrush.Dispose();
}
textLayout = CreateTextLayout(resourceCreator, (float)targetSize.Width, (float)targetSize.Height);
textReference = CanvasGeometry.CreateText(textLayout);
textBrush = new CanvasSolidColorBrush(resourceCreator, Colors.LightBlue);
needsResourceRecreation = false;
}
private void EnsureResources(ICanvasResourceCreatorWithDpi resourceCreator, Size targetSize)
{
if (_needsTextFormatRecreation)
{
_textFormat?.Dispose();
_textFormat = new CanvasTextFormat()
{
HorizontalAlignment = _horizontalAlignment,
FontFamily = FontFamily.Source,
FontSize = (float)FontSize,
FontStretch = FontStretch,
FontStyle = FontStyle,
FontWeight = FontWeight,
};
}
if (_needsTextLayoutRecreation)
{
_textLayout?.Dispose();
_textLayout = new CanvasTextLayout(resourceCreator, Text, _textFormat, (float)targetSize.Width - _marginWidth - _marginPadding, (float)targetSize.Height);
}
if (_needsForegroundBrushRecreation)
{
_foregroundBrush?.Dispose();
_foregroundBrush = new CanvasSolidColorBrush(resourceCreator, (Foreground as SolidColorBrush).Color);
}
if (_needsBackgroundBrushRecreation)
{
_backgroundBrush?.Dispose();
_backgroundBrush = new CanvasSolidColorBrush(resourceCreator, (Background as SolidColorBrush).Color);
}
if (_needsSelectionHighlightColorBrushRecreation)
{
_selectionHighlightColorBrush?.Dispose();
_selectionHighlightColorBrush = new CanvasSolidColorBrush(resourceCreator, SelectionHighlightColor.Color);
}
if (_needsCursorColorBrushRecreation)
{
_cursorColorBrush?.Dispose();
_cursorColorBrush = new CanvasSolidColorBrush(resourceCreator, CursorColor.Color);
}
if (_needsSelectionForegroundBrushRecreation)
{
_selectionForegroundBrush?.Dispose();
_selectionForegroundBrush = new CanvasSolidColorBrush(resourceCreator, Colors.White);
}
if (_needsLineNumberTextFormatRecreation)
{
_lineNumberTextFormat?.Dispose();
_lineNumberTextFormat = new CanvasTextFormat()
{
HorizontalAlignment = CanvasHorizontalAlignment.Right,
FontFamily = FontFamily.Source,
FontSize = (float)FontSize,
};
}
if (_needsLineNumberTextLayoutRecreation)
{
_lineNumberTextLayout?.Dispose();
var lineNumberSb = new StringBuilder();
var characterCount = 0;
var lineNumber = 1;
lineNumberSb.AppendLine(lineNumber++.ToString());
foreach (var lineMetric in _textLayout.LineMetrics)
{
characterCount += lineMetric.CharacterCount;
if (Text[characterCount - 1] == '\n' || Text[characterCount - 1] == '\r')
{
lineNumberSb.AppendLine(lineNumber++.ToString());
}
else
{
lineNumberSb.AppendLine();
}
}
_lineNumberTextLayout = new CanvasTextLayout(resourceCreator, lineNumberSb.ToString(), _lineNumberTextFormat, _marginWidth - _marginPadding, (float)targetSize.Height);
}
}
private void RenderGeometory(CanvasDrawingSession session, CanvasGeometry geometry, SvgMatrix transform, CssStyleDeclaration style)
{
bool change = false;
var geometry2 = geometry;
CanvasSolidColorBrush opacityBrush = null;
try
{
using (var t = TransformSession.CreateTransformSession(session, transform))
{
var clipPath = style.ClipPath;
if (clipPath != null)
{
if (clipPath.Uri[0] != '#')
{
throw new ArgumentException();
}
var clipPathElement = (SvgClipPathElement)this.TargetDocument.GetElementById(clipPath.Uri.Substring(1));
var clipGeometory = this.CreateClipPath(session, clipPathElement);
geometry2 = geometry.CombineWith(
clipGeometory,
new Matrix3x2 {
M11 = 1.0F, M12 = 0.0F, M21 = 0.0F, M22 = 1.0F, M31 = 0.0F, M32 = 0.0F
},
CanvasGeometryCombine.Intersect,
CanvasGeometry.ComputeFlatteningTolerance(session.Dpi, 1.0F, session.Transform));
change = true;
}
var area = geometry2.ComputeBounds();
var opacity = style.Opacity;
if (opacity != null)
{
opacityBrush = this.CreateOpacity(session, opacity.Value);
}
var fill = style.Fill;
if (fill == null || fill != null && fill.PaintType != SvgPaintType.None)
{
var pen = this.CreatePaint(session, area, fill, style.FillOpacity);
if (opacityBrush == null)
{
session.FillGeometry(geometry2, pen);
}
else
{
session.FillGeometry(geometry2, pen, opacityBrush);
}
}
var stroke = style.Stroke;
if (stroke != null && stroke.PaintType != SvgPaintType.None)
{
var pen = this.CreatePaint(session, area, stroke, style.StrokeOpacity);
var strokeWidth = style.StrokeWidth;
session.DrawGeometry(geometry2, pen, strokeWidth.HasValue ? this.LengthConverter.Convert(strokeWidth.Value) : 1.0F);
}
}
}
finally
{
if (change)
{
geometry2.Dispose();
}
if (opacityBrush != null)
{
opacityBrush.Dispose();
}
}
}