/// <summary>
/// See base docs.
/// </summary>
/// <param name="drawing"></param>
/// <param name="font"></param>
/// <param name="text"></param>
/// <param name="width"></param>
/// <param name="height"></param>
protected override void MeasureText(VrsDrawing.IDrawing drawing, VrsDrawing.IFont font, string text, out float width, out float height)
{
width = 0F;
height = 0F;
if (drawing is Drawing context && font is FontWrapper fontWrapper)
{
var size = context.NativeDrawingContext.MeasureString(
text,
fontWrapper.NativeFont,
new PointF(0, 0),
StringFormat.GenericTypographic
);
width = size.Width;
height = size.Height;
}
}
/// <summary>
/// See base docs.
/// </summary>
/// <param name="fontFamily"></param>
/// <param name="pointSize"></param>
/// <param name="fontStyle"></param>
/// <param name="isCached"></param>
/// <returns></returns>
protected override VrsDrawing.IFont CreateFontWrapper(VrsDrawing.IFontFamily fontFamily, float pointSize, VrsDrawing.FontStyle fontStyle, bool isCached)
{
VrsDrawing.IFont result = null;
if (fontFamily is FontFamilyWrapper fontFamilyWrapper)
{
result = new FontWrapper(
new Font(
fontFamilyWrapper.NativeFontFamily,
pointSize,
Convert.ToSystemDrawingFontStyle(fontStyle),
GraphicsUnit.Point
),
isCached
);
}
return(result);
}
/// <summary>
/// See base docs.
/// </summary>
/// <param name="text"></param>
/// <param name="font"></param>
/// <param name="fillBrush"></param>
/// <param name="outlinePen"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="alignment"></param>
/// <param name="preferSpeedOverQuality"></param>
public override void DrawText(string text, VrsDrawing.IFont font, VrsDrawing.IBrush fillBrush, VrsDrawing.IPen outlinePen, float x, float y, VrsDrawing.HorizontalAlignment alignment, bool preferSpeedOverQuality = true)
{
if (font is FontWrapper fontWrapper)
{
GdiPlusLock.EnforceSingleThread(() => {
var location = new PointF(x, y);
// Mono ignores these flags...
var stringFormat = new StringFormat()
{
Alignment = Convert.ToSystemDrawingStringAlignment(alignment),
LineAlignment = Convert.ToSystemDrawingStringAlignment(alignment),
FormatFlags = StringFormatFlags.NoWrap,
};
using (var graphicsPath = new GraphicsPath()) {
graphicsPath.AddString(
text,
fontWrapper.NativeFont.FontFamily,
(int)fontWrapper.NativeFont.Style,
fontWrapper.NativeFont.Size,
location,
stringFormat
);
NativeDrawingContext.SmoothingMode = SmoothingMode.AntiAlias;
NativeDrawingContext.InterpolationMode = InterpolationMode.HighQualityBicubic;
if (outlinePen is PenWrapper outlinePenWrapper)
{
NativeDrawingContext.DrawPath(outlinePenWrapper.NativePen, graphicsPath);
}
if (fillBrush is BrushWrapper fillBrushWrapper)
{
NativeDrawingContext.FillPath(fillBrushWrapper.NativeBrush, graphicsPath);
}
}
});
}
}
/// <summary> /// Measures a string given a font and a drawing context. /// </summary> /// <param name="drawing"></param> /// <param name="font"></param> /// <param name="text"></param> /// <param name="width"></param> /// <param name="height"></param> protected abstract void MeasureText(VrsDrawing.IDrawing drawing, VrsDrawing.IFont font, string text, out float width, out float height);
/// <summary> /// See interface docs. /// </summary> /// <param name="text"></param> /// <param name="font"></param> /// <param name="fillBrush"></param> /// <param name="outlinePen"></param> /// <param name="x"></param> /// <param name="y"></param> /// <param name="alignment"></param> /// <param name="preferSpeedOverQuality"></param> public abstract void DrawText(string text, VrsDrawing.IFont font, VrsDrawing.IBrush fillBrush, VrsDrawing.IPen outlinePen, float x, float y, VrsDrawing.HorizontalAlignment alignment, bool preferSpeedOverQuality = true);
