/// <summary>
/// Draws a point primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="brush">A GDI brush to use for drawing.</param>
/// <param name="point">The point primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawPointPrimitive(IGdiBuffer buffer, SolidBrush brush, PointPrimitive point, float dpi = _nominalScreenDpi)
{
buffer.Graphics.Transform = point.SpatialTransform.CumulativeTransform;
point.CoordinateSystem = CoordinateSystem.Source;
try
{
var dropShadowOffset = GetDropShadowOffset(point, dpi);
var width = CalculateScaledPenWidth(point, 1, dpi);
// Draw drop shadow
brush.Color = Color.Black;
buffer.Graphics.FillRectangle(
brush,
point.Point.X + dropShadowOffset.Width,
point.Point.Y + dropShadowOffset.Height,
width,
width);
// Draw point
brush.Color = point.Color;
buffer.Graphics.FillRectangle(
brush,
point.Point.X,
point.Point.Y,
width,
width);
}
finally
{
point.ResetCoordinateSystem();
buffer.Graphics.ResetTransform();
}
}
/// <summary>
/// Draws a line primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="pen">A GDI pen to use for drawing.</param>
/// <param name="line">The line primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawLinePrimitive(IGdiBuffer buffer, Pen pen, ILineSegmentGraphic line, float dpi = _nominalScreenDpi)
{
buffer.Graphics.Transform = line.SpatialTransform.CumulativeTransform;
line.CoordinateSystem = CoordinateSystem.Source;
buffer.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
try
{
// Draw drop shadow
pen.Color = Color.Black;
pen.Width = CalculateScaledPenWidth(line, 1, dpi);
SetDashStyle(pen, line);
var dropShadowOffset = GetDropShadowOffset(line, dpi);
buffer.Graphics.DrawLine(
pen,
line.Point1 + dropShadowOffset,
line.Point2 + dropShadowOffset);
// Draw line
pen.Color = line.Color;
buffer.Graphics.DrawLine(
pen,
line.Point1,
line.Point2);
}
finally
{
buffer.Graphics.SmoothingMode = SmoothingMode.None;
line.ResetCoordinateSystem();
buffer.Graphics.ResetTransform();
}
}
public static void DrawAnnotationBox(IGdiBuffer buffer, SolidBrush brush, IFontFactory fontFactory,
string annotationText, AnnotationBox annotationBox, float dpi = _nominalScreenDpi)
{
var fakeFactory = new LegacyGdiObjectFactory(fontFactory, brush);
DrawAnnotationBox(buffer, fakeFactory, annotationText, annotationBox, dpi);
}
/// <summary>
/// Draws an arc primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="pen">A GDI pen to use for drawing.</param>
/// <param name="arc">The arc primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawArcPrimitive(IGdiBuffer buffer, Pen pen, IArcGraphic arc, float dpi = _nominalScreenDpi)
{
buffer.Graphics.Transform = arc.SpatialTransform.CumulativeTransform;
arc.CoordinateSystem = CoordinateSystem.Source;
buffer.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
try
{
var rectangle = new RectangleF(arc.TopLeft.X, arc.TopLeft.Y, arc.Width, arc.Height);
rectangle = RectangleUtilities.ConvertToPositiveRectangle(rectangle);
var dropShadowOffset = GetDropShadowOffset(arc, dpi);
// Draw drop shadow
pen.Color = Color.Black;
pen.Width = CalculateScaledPenWidth(arc, 1, dpi);
SetDashStyle(pen, arc);
buffer.Graphics.DrawArc(
pen,
rectangle.Left + dropShadowOffset.Width,
rectangle.Top + dropShadowOffset.Height,
rectangle.Width,
rectangle.Height,
arc.StartAngle,
arc.SweepAngle);
// Draw rectangle
pen.Color = arc.Color;
buffer.Graphics.DrawArc(
pen,
rectangle.Left,
rectangle.Top,
rectangle.Width,
rectangle.Height,
arc.StartAngle,
arc.SweepAngle);
}
finally
{
buffer.Graphics.SmoothingMode = SmoothingMode.None;
arc.ResetCoordinateSystem();
buffer.Graphics.ResetTransform();
}
}
/// <summary>
/// Draws a spline primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="pen">A GDI pen to use for drawing.</param>
/// <param name="spline">The spline primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawSplinePrimitive(IGdiBuffer buffer, Pen pen, SplinePrimitive spline, float dpi = _nominalScreenDpi)
{
buffer.Graphics.Transform = spline.SpatialTransform.CumulativeTransform;
spline.CoordinateSystem = CoordinateSystem.Source;
buffer.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
try
{
// Draw drop shadow
pen.Color = Color.Black;
pen.Width = CalculateScaledPenWidth(spline, 1, dpi);
SetDashStyle(pen, spline);
var dropShadowOffset = GetDropShadowOffset(spline, dpi);
var pathPoints = GetCurvePoints(spline.Points, dropShadowOffset);
if (spline.Points.IsClosed)
{
buffer.Graphics.DrawClosedCurve(pen, pathPoints);
}
else
{
buffer.Graphics.DrawCurve(pen, pathPoints);
}
// Draw line
pen.Color = spline.Color;
pathPoints = GetCurvePoints(spline.Points, SizeF.Empty);
if (spline.Points.IsClosed)
{
buffer.Graphics.DrawClosedCurve(pen, pathPoints);
}
else
{
buffer.Graphics.DrawCurve(pen, pathPoints);
}
}
finally
{
buffer.Graphics.SmoothingMode = SmoothingMode.None;
spline.ResetCoordinateSystem();
buffer.Graphics.ResetTransform();
}
}
/// <summary>
/// Draws a text primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="gdiObjectFactory">A factory for GDI+ objects.</param>
/// <param name="text">The text primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawTextPrimitive(IGdiBuffer buffer, IGdiObjectFactory gdiObjectFactory, InvariantTextPrimitive text, float dpi = _nominalScreenDpi)
{
text.CoordinateSystem = CoordinateSystem.Destination;
try
{
// We adjust the font size depending on the scale so that it's the same size
// irrespective of the zoom
var fontSize = CalculateScaledFontPoints(text.SizeInPoints, dpi);
var createFontArgs = new CreateFontArgs(text.Font, fontSize, FontStyle.Regular, GraphicsUnit.Point)
{
DefaultFontName = FontFactory.GenericSansSerif
};
var font = gdiObjectFactory.CreateFont(createFontArgs);
// Calculate how big the text will be so we can set the bounding box
text.Dimensions = buffer.Graphics.MeasureString(text.Text, font);
// Draw drop shadow
var brush = gdiObjectFactory.CreateBrush(new CreateBrushArgs(Color.Black));
var dropShadowOffset = new SizeF(1, 1);
var boundingBoxTopLeft = new PointF(text.BoundingBox.Left, text.BoundingBox.Top);
buffer.Graphics.DrawString(
text.Text,
font,
brush,
boundingBoxTopLeft + dropShadowOffset);
// Draw text
brush = gdiObjectFactory.CreateBrush(new CreateBrushArgs(text.Color));
buffer.Graphics.DrawString(
text.Text,
font,
brush,
boundingBoxTopLeft);
}
finally
{
text.ResetCoordinateSystem();
}
}
/// <summary>
/// Draws an ellipse primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="pen">A GDI pen to use for drawing.</param>
/// <param name="ellipse">The ellipse primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawEllipsePrimitive(IGdiBuffer buffer, Pen pen, IBoundableGraphic ellipse, float dpi = _nominalScreenDpi)
{
buffer.Graphics.Transform = ellipse.SpatialTransform.CumulativeTransform;
ellipse.CoordinateSystem = CoordinateSystem.Source;
buffer.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
try
{
var rectangle = new RectangleF(ellipse.TopLeft.X, ellipse.TopLeft.Y, ellipse.Width, ellipse.Height);
rectangle = RectangleUtilities.ConvertToPositiveRectangle(rectangle);
var dropShadowOffset = GetDropShadowOffset(ellipse, dpi);
// Draw drop shadow
pen.Color = Color.Black;
pen.Width = CalculateScaledPenWidth(ellipse, 1, dpi);
SetDashStyle(pen, ellipse);
buffer.Graphics.DrawEllipse(
pen,
rectangle.Left + dropShadowOffset.Width,
rectangle.Top + dropShadowOffset.Height,
rectangle.Width,
rectangle.Height);
// Draw rectangle
pen.Color = ellipse.Color;
buffer.Graphics.DrawEllipse(
pen,
rectangle.Left,
rectangle.Top,
rectangle.Width,
rectangle.Height);
}
finally
{
buffer.Graphics.SmoothingMode = SmoothingMode.None;
ellipse.ResetCoordinateSystem();
buffer.Graphics.ResetTransform();
}
}
/// <summary>
/// Draws a line primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="pen">A GDI pen to use for drawing.</param>
/// <param name="line">The line primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawLinePrimitive(IGdiBuffer buffer, Pen pen, ILineSegmentGraphic line, float dpi = _nominalScreenDpi)
{
buffer.Graphics.Transform = line.SpatialTransform.CumulativeTransform;
line.CoordinateSystem = CoordinateSystem.Source;
buffer.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
try
{
// Draw drop shadow
pen.Color = Color.Black;
pen.Width = CalculateScaledPenWidth(line, 1, dpi);
SetDashStyle(pen, line);
var dropShadowOffset = GetDropShadowOffset(line, dpi);
buffer.Graphics.DrawLine(
pen,
line.Point1 + dropShadowOffset,
line.Point2 + dropShadowOffset);
// Draw line
pen.Color = line.Color;
buffer.Graphics.DrawLine(
pen,
line.Point1,
line.Point2);
}
finally
{
buffer.Graphics.SmoothingMode = SmoothingMode.None;
line.ResetCoordinateSystem();
buffer.Graphics.ResetTransform();
}
}
/// <summary>
/// Draws an arc primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="pen">A GDI pen to use for drawing.</param>
/// <param name="arc">The arc primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawArcPrimitive(IGdiBuffer buffer, Pen pen, IArcGraphic arc, float dpi = _nominalScreenDpi)
{
buffer.Graphics.Transform = arc.SpatialTransform.CumulativeTransform;
arc.CoordinateSystem = CoordinateSystem.Source;
buffer.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
try
{
var rectangle = new RectangleF(arc.TopLeft.X, arc.TopLeft.Y, arc.Width, arc.Height);
rectangle = RectangleUtilities.ConvertToPositiveRectangle(rectangle);
var dropShadowOffset = GetDropShadowOffset(arc, dpi);
// Draw drop shadow
pen.Color = Color.Black;
pen.Width = CalculateScaledPenWidth(arc, 1, dpi);
SetDashStyle(pen, arc);
buffer.Graphics.DrawArc(
pen,
rectangle.Left + dropShadowOffset.Width,
rectangle.Top + dropShadowOffset.Height,
rectangle.Width,
rectangle.Height,
arc.StartAngle,
arc.SweepAngle);
// Draw rectangle
pen.Color = arc.Color;
buffer.Graphics.DrawArc(
pen,
rectangle.Left,
rectangle.Top,
rectangle.Width,
rectangle.Height,
arc.StartAngle,
arc.SweepAngle);
}
finally
{
buffer.Graphics.SmoothingMode = SmoothingMode.None;
arc.ResetCoordinateSystem();
buffer.Graphics.ResetTransform();
}
}
/// <summary>
/// Draws a point primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="brush">A GDI brush to use for drawing.</param>
/// <param name="point">The point primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawPointPrimitive(IGdiBuffer buffer, SolidBrush brush, PointPrimitive point, float dpi = _nominalScreenDpi)
{
buffer.Graphics.Transform = point.SpatialTransform.CumulativeTransform;
point.CoordinateSystem = CoordinateSystem.Source;
try
{
var dropShadowOffset = GetDropShadowOffset(point, dpi);
var width = CalculateScaledPenWidth(point, 1, dpi);
// Draw drop shadow
brush.Color = Color.Black;
buffer.Graphics.FillRectangle(
brush,
point.Point.X + dropShadowOffset.Width,
point.Point.Y + dropShadowOffset.Height,
width,
width);
// Draw point
brush.Color = point.Color;
buffer.Graphics.FillRectangle(
brush,
point.Point.X,
point.Point.Y,
width,
width);
}
finally
{
point.ResetCoordinateSystem();
buffer.Graphics.ResetTransform();
}
}
/// <summary>
/// Draws a text primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="brush">A GDI brush to use for drawing.</param>
/// <param name="fontFactory">A GDI font factory to use for drawing.</param>
/// <param name="text">The text primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawTextPrimitive(IGdiBuffer buffer, SolidBrush brush, FontFactory fontFactory, InvariantTextPrimitive text, float dpi = _nominalScreenDpi)
{
text.CoordinateSystem = CoordinateSystem.Destination;
try
{
// We adjust the font size depending on the scale so that it's the same size
// irrespective of the zoom
var fontSize = CalculateScaledFontPoints(text.SizeInPoints, dpi);
var font = fontFactory.GetFont(text.Font, fontSize, FontStyle.Regular, GraphicsUnit.Point, FontFactory.GenericSansSerif);
// Calculate how big the text will be so we can set the bounding box
text.Dimensions = buffer.Graphics.MeasureString(text.Text, font);
// Draw drop shadow
brush.Color = Color.Black;
var dropShadowOffset = new SizeF(1, 1);
var boundingBoxTopLeft = new PointF(text.BoundingBox.Left, text.BoundingBox.Top);
buffer.Graphics.DrawString(
text.Text,
font,
brush,
boundingBoxTopLeft + dropShadowOffset);
// Draw text
brush.Color = text.Color;
buffer.Graphics.DrawString(
text.Text,
font,
brush,
boundingBoxTopLeft);
}
finally
{
text.ResetCoordinateSystem();
}
}
/// <summary>
/// Draws an annotation box to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="brush">A GDI brush to use for drawing.</param>
/// <param name="fontFactory">A GDI font factory to use for drawing.</param>
/// <param name="annotationText">The annotation text to be drawn.</param>
/// <param name="annotationBox">The annotation box to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawAnnotationBox(IGdiBuffer buffer, SolidBrush brush, FontFactory fontFactory, string annotationText, AnnotationBox annotationBox, float dpi = _nominalScreenDpi)
{
// if there's nothing to draw, there's nothing to do. go figure.
if (string.IsNullOrEmpty(annotationText))
return;
var clientRectangle = RectangleUtilities.CalculateSubRectangle(buffer.Bounds, annotationBox.NormalizedRectangle);
//Deflate the client rectangle by 4 pixels to allow some space
//between neighbouring rectangles whose borders coincide.
Rectangle.Inflate(clientRectangle, -4, -4);
var fontSize = (clientRectangle.Height/annotationBox.NumberOfLines) - 1;
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
return;
using (var format = new StringFormat())
{
if (annotationBox.Truncation == AnnotationBox.TruncationBehaviour.Truncate)
format.Trimming = StringTrimming.Character;
else
format.Trimming = StringTrimming.EllipsisCharacter;
if (annotationBox.FitWidth)
format.Trimming = StringTrimming.None;
if (annotationBox.Justification == AnnotationBox.JustificationBehaviour.Right)
format.Alignment = StringAlignment.Far;
else if (annotationBox.Justification == AnnotationBox.JustificationBehaviour.Center)
format.Alignment = StringAlignment.Center;
else
format.Alignment = StringAlignment.Near;
if (annotationBox.VerticalAlignment == AnnotationBox.VerticalAlignmentBehaviour.Top)
format.LineAlignment = StringAlignment.Near;
else if (annotationBox.VerticalAlignment == AnnotationBox.VerticalAlignmentBehaviour.Center)
format.LineAlignment = StringAlignment.Center;
else
format.LineAlignment = StringAlignment.Far;
//allow p's and q's, etc to extend slightly beyond the bounding rectangle. Only completely visible lines are shown.
format.FormatFlags = StringFormatFlags.NoClip;
if (annotationBox.NumberOfLines == 1)
format.FormatFlags |= StringFormatFlags.NoWrap;
var style = FontStyle.Regular;
if (annotationBox.Bold)
style |= FontStyle.Bold;
if (annotationBox.Italics)
style |= FontStyle.Italic;
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
return;
var font = fontFactory.GetFont(annotationBox.Font, fontSize, style, GraphicsUnit.Pixel, AnnotationBox.DefaultFont);
var layoutArea = new SizeF(clientRectangle.Width, clientRectangle.Height);
var size = buffer.Graphics.MeasureString(annotationText, font, layoutArea, format);
if (annotationBox.FitWidth && size.Width > clientRectangle.Width)
{
fontSize = (int) (Math.Round(fontSize*clientRectangle.Width/(double) size.Width - 0.5));
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
return;
font = fontFactory.GetFont(annotationBox.Font, fontSize, style, GraphicsUnit.Pixel, AnnotationBox.DefaultFont);
}
// Draw drop shadow
brush.Color = Color.Black;
clientRectangle.Offset(1, 1);
buffer.Graphics.DrawString(
annotationText,
font,
brush,
clientRectangle,
format);
brush.Color = Color.FromName(annotationBox.Color);
clientRectangle.Offset(-1, -1);
buffer.Graphics.DrawString(
annotationText,
font,
brush,
clientRectangle,
format);
}
}
public static void DrawAnnotationBox(IGdiBuffer buffer, SolidBrush brush, IFontFactory fontFactory,
string annotationText, AnnotationBox annotationBox, float dpi = _nominalScreenDpi)
{
var fakeFactory = new LegacyGdiObjectFactory(fontFactory, brush);
DrawAnnotationBox(buffer, fakeFactory, annotationText, annotationBox, dpi);
}
public static void DrawTextPrimitive(IGdiBuffer buffer, SolidBrush brush, IFontFactory fontFactory, InvariantTextPrimitive text, float dpi = _nominalScreenDpi)
{
var fakeFactory = new LegacyGdiObjectFactory(fontFactory, brush);
DrawTextPrimitive(buffer, fakeFactory, text, dpi);
}
/// <summary>
/// Draws an annotation box to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="gdiObjectFactory">A factory for GDI objects.</param>
/// <param name="annotationText">The annotation text to be drawn.</param>
/// <param name="annotationBox">The annotation box to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawAnnotationBox(IGdiBuffer buffer, IGdiObjectFactory gdiObjectFactory,
string annotationText, AnnotationBox annotationBox, float dpi = _nominalScreenDpi)
{
// if there's nothing to draw, there's nothing to do. go figure.
if (string.IsNullOrWhiteSpace(annotationText))
{
return;
}
var clientRectangle = RectangleUtilities.CalculateSubRectangle(buffer.Bounds, annotationBox.NormalizedRectangle);
//Deflate the client rectangle by 4 pixels to allow some space
//between neighbouring rectangles whose borders coincide.
Rectangle.Inflate(clientRectangle, -4, -4);
var fontSize = (clientRectangle.Height / annotationBox.NumberOfLines) - 1;
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
{
return;
}
var style = FontStyle.Regular;
if (annotationBox.Bold)
{
style |= FontStyle.Bold;
}
if (annotationBox.Italics)
{
style |= FontStyle.Italic;
}
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
{
return;
}
var fontArgs = new CreateFontArgs(annotationBox.Font, fontSize, style, GraphicsUnit.Pixel)
{
DefaultFontName = AnnotationBox.DefaultFont
};
var font = gdiObjectFactory.CreateFont(fontArgs);
var format = gdiObjectFactory.CreateStringFormat(new CreateStringFormatArgs(annotationBox));
var layoutArea = new SizeF(clientRectangle.Width, clientRectangle.Height);
var size = buffer.Graphics.MeasureString(annotationText, font, layoutArea, format);
if (annotationBox.FitWidth && size.Width > clientRectangle.Width)
{
fontSize = (int)(Math.Round(fontSize * clientRectangle.Width / (double)size.Width - 0.5));
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
{
return;
}
font = gdiObjectFactory.CreateFont(fontArgs);
}
// Draw drop shadow
var brush = gdiObjectFactory.CreateBrush(new CreateBrushArgs(Color.Black));
clientRectangle.Offset(1, 1);
buffer.Graphics.DrawString(
annotationText,
font,
brush,
clientRectangle,
format);
brush = gdiObjectFactory.CreateBrush(new CreateBrushArgs(annotationBox.Color));
clientRectangle.Offset(-1, -1);
buffer.Graphics.DrawString(
annotationText,
font,
brush,
clientRectangle,
format);
}
/// <summary>
/// Draws an annotation box to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="brush">A GDI brush to use for drawing.</param>
/// <param name="fontFactory">A GDI font factory to use for drawing.</param>
/// <param name="annotationText">The annotation text to be drawn.</param>
/// <param name="annotationBox">The annotation box to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawAnnotationBox(IGdiBuffer buffer, SolidBrush brush, FontFactory fontFactory, string annotationText, AnnotationBox annotationBox, float dpi = _nominalScreenDpi)
{
// if there's nothing to draw, there's nothing to do. go figure.
if (string.IsNullOrEmpty(annotationText))
{
return;
}
var clientRectangle = RectangleUtilities.CalculateSubRectangle(buffer.Bounds, annotationBox.NormalizedRectangle);
//Deflate the client rectangle by 4 pixels to allow some space
//between neighbouring rectangles whose borders coincide.
Rectangle.Inflate(clientRectangle, -4, -4);
var fontSize = (clientRectangle.Height / annotationBox.NumberOfLines) - 1;
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
{
return;
}
using (var format = new StringFormat())
{
if (annotationBox.Truncation == AnnotationBox.TruncationBehaviour.Truncate)
{
format.Trimming = StringTrimming.Character;
}
else
{
format.Trimming = StringTrimming.EllipsisCharacter;
}
if (annotationBox.FitWidth)
{
format.Trimming = StringTrimming.None;
}
if (annotationBox.Justification == AnnotationBox.JustificationBehaviour.Right)
{
format.Alignment = StringAlignment.Far;
}
else if (annotationBox.Justification == AnnotationBox.JustificationBehaviour.Center)
{
format.Alignment = StringAlignment.Center;
}
else
{
format.Alignment = StringAlignment.Near;
}
if (annotationBox.VerticalAlignment == AnnotationBox.VerticalAlignmentBehaviour.Top)
{
format.LineAlignment = StringAlignment.Near;
}
else if (annotationBox.VerticalAlignment == AnnotationBox.VerticalAlignmentBehaviour.Center)
{
format.LineAlignment = StringAlignment.Center;
}
else
{
format.LineAlignment = StringAlignment.Far;
}
//allow p's and q's, etc to extend slightly beyond the bounding rectangle. Only completely visible lines are shown.
format.FormatFlags = StringFormatFlags.NoClip;
if (annotationBox.NumberOfLines == 1)
{
format.FormatFlags |= StringFormatFlags.NoWrap;
}
var style = FontStyle.Regular;
if (annotationBox.Bold)
{
style |= FontStyle.Bold;
}
if (annotationBox.Italics)
{
style |= FontStyle.Italic;
}
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
{
return;
}
var font = fontFactory.GetFont(annotationBox.Font, fontSize, style, GraphicsUnit.Pixel, AnnotationBox.DefaultFont);
var layoutArea = new SizeF(clientRectangle.Width, clientRectangle.Height);
var size = buffer.Graphics.MeasureString(annotationText, font, layoutArea, format);
if (annotationBox.FitWidth && size.Width > clientRectangle.Width)
{
fontSize = (int)(Math.Round(fontSize * clientRectangle.Width / (double)size.Width - 0.5));
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
{
return;
}
font = fontFactory.GetFont(annotationBox.Font, fontSize, style, GraphicsUnit.Pixel, AnnotationBox.DefaultFont);
}
// Draw drop shadow
brush.Color = Color.Black;
clientRectangle.Offset(1, 1);
buffer.Graphics.DrawString(
annotationText,
font,
brush,
clientRectangle,
format);
brush.Color = Color.FromName(annotationBox.Color);
clientRectangle.Offset(-1, -1);
buffer.Graphics.DrawString(
annotationText,
font,
brush,
clientRectangle,
format);
}
}
public static void DrawPointPrimitive(IGdiBuffer buffer, SolidBrush brush, PointPrimitive point, float dpi = _nominalScreenDpi)
{
var fakeFactory = new LegacyGdiObjectFactory(null, brush);
DrawPointPrimitive(buffer, fakeFactory, point, dpi);
}
public static void DrawTextPrimitive(IGdiBuffer buffer, SolidBrush brush, IFontFactory fontFactory, InvariantTextPrimitive text, float dpi = _nominalScreenDpi)
{
var fakeFactory = new LegacyGdiObjectFactory(fontFactory, brush);
DrawTextPrimitive(buffer, fakeFactory, text, dpi);
}
/// <summary>
/// Draws an annotation box to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="gdiObjectFactory">A factory for GDI objects.</param>
/// <param name="annotationText">The annotation text to be drawn.</param>
/// <param name="annotationBox">The annotation box to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawAnnotationBox(IGdiBuffer buffer, IGdiObjectFactory gdiObjectFactory,
string annotationText, AnnotationBox annotationBox, float dpi = _nominalScreenDpi)
{
// if there's nothing to draw, there's nothing to do. go figure.
if (string.IsNullOrWhiteSpace(annotationText))
return;
var clientRectangle = RectangleUtilities.CalculateSubRectangle(buffer.Bounds, annotationBox.NormalizedRectangle);
//Deflate the client rectangle by 4 pixels to allow some space
//between neighbouring rectangles whose borders coincide.
Rectangle.Inflate(clientRectangle, -4, -4);
var fontSize = (clientRectangle.Height/annotationBox.NumberOfLines) - 1;
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
return;
var style = FontStyle.Regular;
if (annotationBox.Bold)
style |= FontStyle.Bold;
if (annotationBox.Italics)
style |= FontStyle.Italic;
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
return;
var fontArgs = new CreateFontArgs(annotationBox.Font, fontSize, style, GraphicsUnit.Pixel) { DefaultFontName = AnnotationBox.DefaultFont };
var font = gdiObjectFactory.CreateFont(fontArgs);
var format = gdiObjectFactory.CreateStringFormat(new CreateStringFormatArgs(annotationBox));
var layoutArea = new SizeF(clientRectangle.Width, clientRectangle.Height);
var size = buffer.Graphics.MeasureString(annotationText, font, layoutArea, format);
if (annotationBox.FitWidth && size.Width > clientRectangle.Width)
{
fontSize = (int) (Math.Round(fontSize*clientRectangle.Width/(double) size.Width - 0.5));
//don't draw it if it's too small to read, anyway.
if (fontSize < MinimumFontSizeInPixels)
return;
font = gdiObjectFactory.CreateFont(fontArgs);
}
// Draw drop shadow
var brush = gdiObjectFactory.CreateBrush(new CreateBrushArgs(Color.Black));
clientRectangle.Offset(1, 1);
buffer.Graphics.DrawString(
annotationText,
font,
brush,
clientRectangle,
format);
brush = gdiObjectFactory.CreateBrush(new CreateBrushArgs(annotationBox.Color));
clientRectangle.Offset(-1, -1);
buffer.Graphics.DrawString(
annotationText,
font,
brush,
clientRectangle,
format);
}
/// <summary>
/// Draws a spline primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="pen">A GDI pen to use for drawing.</param>
/// <param name="spline">The spline primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawSplinePrimitive(IGdiBuffer buffer, Pen pen, SplinePrimitive spline, float dpi = _nominalScreenDpi)
{
buffer.Graphics.Transform = spline.SpatialTransform.CumulativeTransform;
spline.CoordinateSystem = CoordinateSystem.Source;
buffer.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
try
{
// Draw drop shadow
pen.Color = Color.Black;
pen.Width = CalculateScaledPenWidth(spline, 1, dpi);
SetDashStyle(pen, spline);
var dropShadowOffset = GetDropShadowOffset(spline, dpi);
var pathPoints = GetCurvePoints(spline.Points, dropShadowOffset);
if (spline.Points.IsClosed)
buffer.Graphics.DrawClosedCurve(pen, pathPoints);
else
buffer.Graphics.DrawCurve(pen, pathPoints);
// Draw line
pen.Color = spline.Color;
pathPoints = GetCurvePoints(spline.Points, SizeF.Empty);
if (spline.Points.IsClosed)
buffer.Graphics.DrawClosedCurve(pen, pathPoints);
else
buffer.Graphics.DrawCurve(pen, pathPoints);
}
finally
{
buffer.Graphics.SmoothingMode = SmoothingMode.None;
spline.ResetCoordinateSystem();
buffer.Graphics.ResetTransform();
}
}
/// <summary>
/// Draws an ellipse primitive to the specified destination buffer.
/// </summary>
/// <param name="buffer">The destination buffer.</param>
/// <param name="pen">A GDI pen to use for drawing.</param>
/// <param name="ellipse">The ellipse primitive to be drawn.</param>
/// <param name="dpi">The intended output DPI.</param>
public static void DrawEllipsePrimitive(IGdiBuffer buffer, Pen pen, IBoundableGraphic ellipse, float dpi = _nominalScreenDpi)
{
buffer.Graphics.Transform = ellipse.SpatialTransform.CumulativeTransform;
ellipse.CoordinateSystem = CoordinateSystem.Source;
buffer.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
try
{
var rectangle = new RectangleF(ellipse.TopLeft.X, ellipse.TopLeft.Y, ellipse.Width, ellipse.Height);
rectangle = RectangleUtilities.ConvertToPositiveRectangle(rectangle);
var dropShadowOffset = GetDropShadowOffset(ellipse, dpi);
// Draw drop shadow
pen.Color = Color.Black;
pen.Width = CalculateScaledPenWidth(ellipse, 1, dpi);
SetDashStyle(pen, ellipse);
buffer.Graphics.DrawEllipse(
pen,
rectangle.Left + dropShadowOffset.Width,
rectangle.Top + dropShadowOffset.Height,
rectangle.Width,
rectangle.Height);
// Draw rectangle
pen.Color = ellipse.Color;
buffer.Graphics.DrawEllipse(
pen,
rectangle.Left,
rectangle.Top,
rectangle.Width,
rectangle.Height);
}
finally
{
buffer.Graphics.SmoothingMode = SmoothingMode.None;
ellipse.ResetCoordinateSystem();
buffer.Graphics.ResetTransform();
}
}
public static void DrawPointPrimitive(IGdiBuffer buffer, SolidBrush brush, PointPrimitive point, float dpi = _nominalScreenDpi)
{
var fakeFactory = new LegacyGdiObjectFactory(null, brush);
DrawPointPrimitive(buffer, fakeFactory, point, dpi);
}