public virtual void OneRotateValuesTest()
{
AffineTransform expected = AffineTransform.GetRotateInstance(MathUtil.ToRadians(10));
AffineTransform actual = TransformUtils.ParseTransform("rotate(10)");
NUnit.Framework.Assert.AreEqual(expected, actual);
}
private void ApplyRotation(SvgDrawContext context)
{
if (this.attributesAndStyles.ContainsKey(SvgConstants.Attributes.ORIENT))
{
String orient = this.attributesAndStyles.Get(SvgConstants.Attributes.ORIENT);
double rotAngle = double.NaN;
// If placed by marker-start, the marker is oriented 180° different from
// the orientation that would be used if auto was specified.
// For all other markers, auto-start-reverse means the same as auto.
if (SvgConstants.Values.AUTO.Equals(orient) || (SvgConstants.Values.AUTO_START_REVERSE.Equals(orient) && !
SvgConstants.Attributes.MARKER_START.Equals(this.attributesAndStyles.Get(SvgConstants.Tags.MARKER))))
{
rotAngle = ((IMarkerCapable)GetParent()).GetAutoOrientAngle(this, false);
}
else
{
if (SvgConstants.Values.AUTO_START_REVERSE.Equals(orient) && SvgConstants.Attributes.MARKER_START.Equals(this
.attributesAndStyles.Get(SvgConstants.Tags.MARKER)))
{
rotAngle = ((IMarkerCapable)GetParent()).GetAutoOrientAngle(this, true);
}
else
{
if (CssUtils.IsAngleValue(orient) || CssUtils.IsNumericValue(orient))
{
rotAngle = CssUtils.ParseAngle(this.attributesAndStyles.Get(SvgConstants.Attributes.ORIENT));
}
}
}
if (!double.IsNaN(rotAngle))
{
context.GetCurrentCanvas().ConcatMatrix(AffineTransform.GetRotateInstance(rotAngle));
}
}
}
/// <exception cref="System.Exception"/>
private static byte[] CreatePdfWithRotatedText(String text1, String text2, float rotation, bool moveTextToNextLine
, float moveTextDelta)
{
MemoryStream byteStream = new MemoryStream();
PdfDocument document = new PdfDocument(new PdfWriter(byteStream));
document.SetDefaultPageSize(new PageSize(612, 792));
PdfCanvas canvas = new PdfCanvas(document.AddNewPage());
PdfFont font = PdfFontFactory.CreateFont(StandardFonts.HELVETICA);
float x = document.GetDefaultPageSize().GetWidth() / 2;
float y = document.GetDefaultPageSize().GetHeight() / 2;
canvas.ConcatMatrix(AffineTransform.GetTranslateInstance(x, y));
canvas.MoveTo(-10, 0).LineTo(10, 0).MoveTo(0, -10).LineTo(0, 10).Stroke();
canvas.BeginText().SetFontAndSize(font, 12).ConcatMatrix(AffineTransform.GetRotateInstance((float)(rotation
/ 180f * Math.PI))).ShowText(text1);
if (moveTextToNextLine)
{
canvas.MoveText(0, moveTextDelta);
}
else
{
canvas.ConcatMatrix(AffineTransform.GetTranslateInstance(moveTextDelta, 0));
}
canvas.ShowText(text2);
canvas.EndText();
document.Close();
return(byteStream.ToArray());
}
protected void ManipulatePdf(String dest)
{
PdfDocument srcDoc = new PdfDocument(new PdfReader(SRC));
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
float a4Width = PageSize.A4.GetWidth();
float a4Height = PageSize.A4.GetHeight();
PageSize pagesize = new PageSize(a4Width * 4, a4Height * 2);
pdfDoc.SetDefaultPageSize(pagesize);
int numberOfPages = srcDoc.GetNumberOfPages();
int p = 1;
PdfCanvas canvas = new PdfCanvas(pdfDoc.AddNewPage());
while ((p - 1) <= numberOfPages)
{
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 3, 0);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 12, a4Width);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 15, a4Width * 2);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p, a4Width * 3);
canvas.SaveState();
// Rotate on 180 degrees and copy pages to the top row.
AffineTransform at = AffineTransform.GetRotateInstance((float)-Math.PI);
at.Concatenate(AffineTransform.GetTranslateInstance(0, -a4Height * 2));
canvas.ConcatMatrix(at);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 4, -a4Width);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 11, -a4Width * 2);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 8, -a4Width * 3);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 7, -a4Width * 4);
canvas.RestoreState();
canvas = new PdfCanvas(pdfDoc.AddNewPage());
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 1, 0);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 14, a4Width);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 13, a4Width * 2);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 2, a4Width * 3);
canvas.SaveState();
// Rotate on 180 degrees and copy pages to the top row.
canvas.ConcatMatrix(at);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 6, -a4Width);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 9, -a4Width * 2);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 10, -a4Width * 3);
CopyPageToDoc(canvas, srcDoc, pdfDoc, p + 5, -a4Width * 4);
canvas.RestoreState();
if ((p - 1) / 16 < numberOfPages / 16)
{
canvas = new PdfCanvas(pdfDoc.AddNewPage());
}
p += 16;
}
pdfDoc.Close();
srcDoc.Close();
}
private static Point[] BuildCentralRotationCoordinates(Rectangle targetBoundingBox, double angle)
{
double xCenter = targetBoundingBox.GetX() + targetBoundingBox.GetWidth() / 2;
AffineTransform rotateInstance = AffineTransform.GetRotateInstance(angle, xCenter, targetBoundingBox.GetY(
) + targetBoundingBox.GetHeight() / 2);
return(BuildCoordinates(targetBoundingBox, rotateInstance));
}
public virtual void ThreeRotateValuesTest()
{
AffineTransform expected = AffineTransform.GetRotateInstance(MathUtil.ToRadians(23), CssUtils.ParseAbsoluteLength
("58"), CssUtils.ParseAbsoluteLength("57"));
AffineTransform actual = TransformUtils.ParseTransform("rotate(23, 58, 57)");
NUnit.Framework.Assert.AreEqual(expected, actual);
}
public virtual void NormalRotateTest()
{
AffineTransform expected = AffineTransform.GetRotateInstance(MathUtil.ToRadians(10), CssUtils.ParseAbsoluteLength
("5"), CssUtils.ParseAbsoluteLength("10"));
AffineTransform actual = TransformUtils.ParseTransform("rotate(10, 5, 10)");
NUnit.Framework.Assert.AreEqual(expected, actual);
}
protected internal virtual void ApplyRotationLayout(Rectangle layoutBox)
{
float angle = (float)this.GetPropertyAsFloat(Property.ROTATION_ANGLE);
float x = occupiedArea.GetBBox().GetX();
float y = occupiedArea.GetBBox().GetY();
float height = occupiedArea.GetBBox().GetHeight();
float width = occupiedArea.GetBBox().GetWidth();
SetProperty(Property.ROTATION_INITIAL_WIDTH, width);
SetProperty(Property.ROTATION_INITIAL_HEIGHT, height);
AffineTransform rotationTransform = new AffineTransform();
// here we calculate and set the actual occupied area of the rotated content
if (IsPositioned())
{
float?rotationPointX = this.GetPropertyAsFloat(Property.ROTATION_POINT_X);
float?rotationPointY = this.GetPropertyAsFloat(Property.ROTATION_POINT_Y);
if (rotationPointX == null || rotationPointY == null)
{
// if rotation point was not specified, the most bottom-left point is used
rotationPointX = x;
rotationPointY = y;
}
// transforms apply from bottom to top
rotationTransform.Translate((float)rotationPointX, (float)rotationPointY);
// move point back at place
rotationTransform.Rotate(angle);
// rotate
rotationTransform.Translate((float)-rotationPointX, (float)-rotationPointY);
// move rotation point to origin
IList <Point> rotatedPoints = TransformPoints(RectangleToPointsList(occupiedArea.GetBBox()), rotationTransform
);
Rectangle newBBox = CalculateBBox(rotatedPoints);
// make occupied area be of size and position of actual content
occupiedArea.GetBBox().SetWidth(newBBox.GetWidth());
occupiedArea.GetBBox().SetHeight(newBBox.GetHeight());
float occupiedAreaShiftX = newBBox.GetX() - x;
float occupiedAreaShiftY = newBBox.GetY() - y;
Move(occupiedAreaShiftX, occupiedAreaShiftY);
}
else
{
rotationTransform = AffineTransform.GetRotateInstance(angle);
IList <Point> rotatedPoints = TransformPoints(RectangleToPointsList(occupiedArea.GetBBox()), rotationTransform
);
float[] shift = CalculateShiftToPositionBBoxOfPointsAt(x, y + height, rotatedPoints);
foreach (Point point in rotatedPoints)
{
point.SetLocation(point.GetX() + shift[0], point.GetY() + shift[1]);
}
Rectangle newBBox = CalculateBBox(rotatedPoints);
occupiedArea.GetBBox().SetWidth(newBBox.GetWidth());
occupiedArea.GetBBox().SetHeight(newBBox.GetHeight());
float heightDiff = height - newBBox.GetHeight();
Move(0, heightDiff);
}
}
private static Point[] GetRotatedSquareVertices(Point[] orthogonalSquareVertices, double angle, Point squareCenter
)
{
Point[] rotatedSquareVertices = new Point[orthogonalSquareVertices.Length];
AffineTransform.GetRotateInstance((float)angle).Transform(orthogonalSquareVertices, 0, rotatedSquareVertices
, 0, rotatedSquareVertices.Length);
AffineTransform.GetTranslateInstance((float)squareCenter.GetX(), (float)squareCenter.GetY()).Transform(rotatedSquareVertices
, 0, rotatedSquareVertices, 0, orthogonalSquareVertices.Length);
return(rotatedSquareVertices);
}
private void ApplyConcatMatrix(DrawContext drawContext, float?angle)
{
AffineTransform rotationTransform = AffineTransform.GetRotateInstance((float)angle);
Rectangle rect = GetBorderAreaBBox();
IList <Point> rotatedPoints = TransformPoints(RectangleToPointsList(rect), rotationTransform);
float[] shift = CalculateShiftToPositionBBoxOfPointsAt(rect.GetX(), rect.GetY() + rect.GetHeight(), rotatedPoints
);
double[] matrix = new double[6];
rotationTransform.GetMatrix(matrix);
drawContext.GetCanvas().ConcatMatrix(matrix[0], matrix[1], matrix[2], matrix[3], shift[0], shift[1]);
}
/// <exception cref="System.IO.IOException"/>
private static TextRenderInfo InitTRI(String text, double angle)
{
CanvasGraphicsState gs = new CanvasGraphicsState();
gs.SetFont(PdfFontFactory.CreateFont());
gs.SetFontSize(12);
float[] matrix = new float[6];
AffineTransform transform = AffineTransform.GetRotateInstance(angle);
transform.GetMatrix(matrix);
return(new TextRenderInfo(new PdfString(text), gs, new Matrix(matrix[0], matrix[1], matrix[2], matrix[3],
matrix[4], matrix[5]), new Stack <CanvasTag>()));
}
/// <summary>
/// This method creates
/// <see cref="iText.Kernel.Geom.AffineTransform"/>
/// instance that could be used
/// to rotate content inside the occupied area. Be aware that it should be used only after
/// layout rendering is finished and correct occupied area for the rotated element is calculated.
/// </summary>
/// <returns>
///
/// <see cref="iText.Kernel.Geom.AffineTransform"/>
/// that rotates the content and places it inside occupied area.
/// </returns>
protected internal virtual AffineTransform CreateRotationTransformInsideOccupiedArea()
{
float? angle = this.GetProperty <float?>(Property.ROTATION_ANGLE);
AffineTransform rotationTransform = AffineTransform.GetRotateInstance((float)angle);
Rectangle contentBox = this.GetOccupiedAreaBBox();
IList <Point> rotatedContentBoxPoints = TransformPoints(RectangleToPointsList(contentBox), rotationTransform
);
// Occupied area for rotated elements is already calculated on layout in such way to enclose rotated content;
// therefore we can simply rotate content as is and then shift it to the occupied area.
float[] shift = CalculateShiftToPositionBBoxOfPointsAt(occupiedArea.GetBBox().GetLeft(), occupiedArea.GetBBox
().GetTop(), rotatedContentBoxPoints);
rotationTransform.PreConcatenate(AffineTransform.GetTranslateInstance(shift[0], shift[1]));
return(rotationTransform);
}
private static PdfCanvas AddBasicContent(PdfPage pdfPage, PdfFont font)
{
Rectangle lineAnnotRect = new Rectangle(0, 0, PageSize.A4.GetRight(), PageSize.A4.GetTop());
pdfPage.AddAnnotation(new PdfLinkAnnotation(new Rectangle(100, 600, 100, 20)).SetAction(PdfAction.CreateURI
("http://itextpdf.com"))).AddAnnotation(new PdfLineAnnotation(lineAnnotRect, new float[] { lineAnnotRect
.GetX(), lineAnnotRect.GetY(), lineAnnotRect.GetRight(), lineAnnotRect.GetTop() }).SetColor(ColorConstants
.BLACK));
PdfCanvas canvas = new PdfCanvas(pdfPage);
canvas.Rectangle(100, 100, 100, 100).Fill();
canvas.SaveState().BeginText().SetTextMatrix(AffineTransform.GetRotateInstance(Math.PI / 4, 36, 350)).SetFontAndSize
(font, 72).ShowText("Hello Helvetica!").EndText().RestoreState();
return(canvas);
}
private static byte[] CreatePdfWithRotatedText(String text1, String text2, float rotation, bool moveTextToNextLine,
float moveTextDelta)
{
MemoryStream byteStream = new MemoryStream();
Document document = new Document();
PdfWriter writer = PdfWriter.GetInstance(document, byteStream);
document.SetPageSize(PageSize.LETTER);
document.Open();
PdfContentByte cb = writer.DirectContent;
BaseFont font = BaseFont.CreateFont();
float x = document.PageSize.Width / 2;
float y = document.PageSize.Height / 2;
cb.Transform(AffineTransform.GetTranslateInstance(x, y));
cb.MoveTo(-10, 0);
cb.LineTo(10, 0);
cb.MoveTo(0, -10);
cb.LineTo(0, 10);
cb.Stroke();
cb.BeginText();
cb.SetFontAndSize(font, 12);
cb.Transform(AffineTransform.GetRotateInstance(rotation / 180f * Math.PI));
cb.ShowText(text1);
if (moveTextToNextLine)
{
cb.MoveText(0, moveTextDelta);
}
else
{
cb.Transform(AffineTransform.GetTranslateInstance(moveTextDelta, 0));
}
cb.ShowText(text2);
cb.EndText();
document.Close();
byte[] pdfBytes = byteStream.ToArray();
return(pdfBytes);
}
){kind=link}
/// <summary>Creates a rotate transformation.</summary>
/// <param name="values">values of the transformation</param>
/// <returns>AffineTransform for the rotate operation</returns>
private static AffineTransform CreateRotationTransformation(IList <String> values)
{
if (values.Count != 1 && values.Count != 3)
{
throw new SvgProcessingException(SvgLogMessageConstant.TRANSFORM_INCORRECT_NUMBER_OF_VALUES);
}
double angle = MathUtil.ToRadians((float)CssUtils.ParseFloat(values[0]));
if (values.Count == 3)
{
float centerX = CssUtils.ParseAbsoluteLength(values[1]);
float centerY = CssUtils.ParseAbsoluteLength(values[2]);
return(AffineTransform.GetRotateInstance(angle, centerX, centerY));
}
return(AffineTransform.GetRotateInstance(angle));
}
){kind=link}
/// <summary>This convenience method rotates a given set of points around a given point</summary>
/// <param name="list">the input list</param>
/// <param name="rotation">the rotation angle, in radians</param>
/// <param name="rotator">the point to rotate around</param>
/// <returns>the list of rotated points</returns>
internal static Point[][] Rotate(Point[][] list, double rotation, Point rotator)
{
if (!CssUtils.CompareFloats(rotation, 0))
{
Point[][] result = new Point[list.Length][];
AffineTransform transRotTrans = AffineTransform.GetRotateInstance(rotation, rotator.x, rotator.y);
for (int i = 0; i < list.Length; i++)
{
Point[] input = list[i];
Point[] row = new Point[input.Length];
for (int j = 0; j < input.Length; j++)
{
row[j] = transRotTrans.Transform(input[j], null);
}
result[i] = row;
}
return(result);
}
return(list);
}
private AffineTransform CreateTransform(PdfImportedPage page, int rotation, Rectangle initialPageSize, bool autoResize)
{
var docWidth = _docContent.Right - _docContent.Left;
var docHeight = _docContent.Top - _docContent.Bottom;
AffineTransform rotate = AffineTransform.GetRotateInstance((Math.PI * (360 - rotation)) / 180, 0, 0);
AffineTransform scale = AffineTransform.GetScaleInstance(docWidth / page.Width, docHeight / page.Height);
AffineTransform translateMargin = AffineTransform.GetTranslateInstance(_docContent.LeftMargin - page.BoundingBox.Left + initialPageSize.Left,
_docContent.BottomMargin - page.BoundingBox.Bottom + initialPageSize.Bottom);
AffineTransform translateRotate = AffineTransform.GetTranslateInstance(0, 0);
if (rotation % 180 == 90)
{
scale = AffineTransform.GetScaleInstance(docWidth / page.Height, docHeight / page.Width);
translateRotate = AffineTransform.GetTranslateInstance((rotation % 360 == 270) ? page.Height : 0,
(rotation % 360 == 90) ? page.Width : 0);
}
else if (rotation % 360 == 180)
{
translateRotate = AffineTransform.GetTranslateInstance(page.Width, page.Height);;
}
AffineTransform transform = AffineTransform.GetTranslateInstance(0, 0);
if (autoResize)
{
transform.preConcatenate(translateMargin);
}
transform.preConcatenate(rotate);
transform.preConcatenate(translateRotate);
if (autoResize)
{
transform.preConcatenate(scale);
}
return(transform);
}
private float AdjustPositionAfterRotation(float angle, float maxWidth, float maxHeight)
{
if (angle != 0)
{
AffineTransform t = AffineTransform.GetRotateInstance(angle);
Point p00 = t.Transform(new Point(0, 0), new Point());
Point p01 = t.Transform(new Point(0, height), new Point());
Point p10 = t.Transform(new Point((float)width, 0), new Point());
Point p11 = t.Transform(new Point((float)width, height), new Point());
double[] xValues = new double[] { p01.GetX(), p10.GetX(), p11.GetX() };
double[] yValues = new double[] { p01.GetY(), p10.GetY(), p11.GetY() };
double minX = p00.GetX();
double minY = p00.GetY();
double maxX = minX;
double maxY = minY;
foreach (double x in xValues)
{
minX = Math.Min(minX, x);
maxX = Math.Max(maxX, x);
}
foreach (double y in yValues)
{
minY = Math.Min(minY, y);
maxY = Math.Max(maxY, y);
}
height = (float)(maxY - minY);
width = (float)(maxX - minX);
pivotY = (float)(p00.GetY() - minY);
deltaX = -(float)minX;
}
// Rotating image can cause fitting into area problems.
// So let's find scaling coefficient
// TODO
float scaleCoeff = 1;
// hasProperty(Property) checks only properties field, cannot use it
if (true.Equals(GetPropertyAsBoolean(Property.AUTO_SCALE)))
{
scaleCoeff = Math.Min(maxWidth / (float)width, maxHeight / height);
height *= scaleCoeff;
width *= scaleCoeff;
}
else
{
if (null != GetPropertyAsBoolean(Property.AUTO_SCALE_WIDTH) && (bool)GetPropertyAsBoolean(Property.AUTO_SCALE_WIDTH
))
{
scaleCoeff = maxWidth / (float)width;
height *= scaleCoeff;
width = maxWidth;
}
else
{
if (null != GetPropertyAsBoolean(Property.AUTO_SCALE_HEIGHT) && (bool)GetPropertyAsBoolean(Property.AUTO_SCALE_HEIGHT
))
{
scaleCoeff = maxHeight / height;
height = maxHeight;
width *= scaleCoeff;
}
}
}
pivotY *= scaleCoeff;
return(scaleCoeff);
}
public override void Draw(PdfCanvas canvas)
{
Point start = new Point(startPoint.x * .75, startPoint.y * .75);
// pixels to points
double rx = Math.Abs(CssUtils.ParseAbsoluteLength(coordinates[0]));
double ry = Math.Abs(CssUtils.ParseAbsoluteLength(coordinates[1]));
// φ is taken mod 360 degrees.
double rotation = Double.Parse(coordinates[2], System.Globalization.CultureInfo.InvariantCulture) % 360.0;
// rotation argument is given in degrees, but we need radians for easier trigonometric calculations
rotation = MathUtil.ToRadians(rotation);
// binary flags (Value correction: any nonzero value for either of the flags fA or fS is taken to mean the value 1.)
bool largeArc = !CssUtils.CompareFloats((float)CssUtils.ParseFloat(coordinates[3]), 0);
bool sweep = !CssUtils.CompareFloats((float)CssUtils.ParseFloat(coordinates[4]), 0);
Point end = new Point(CssUtils.ParseAbsoluteLength(coordinates[5]), CssUtils.ParseAbsoluteLength(coordinates
[6]));
if (CssUtils.CompareFloats(start.x, end.x) && CssUtils.CompareFloats(start.y, end.y))
{
/* edge case: If the endpoints (x1, y1) and (x2, y2) are identical,
* then this is equivalent to omitting the elliptical arc segment entirely.
*/
return;
}
if (CssUtils.CompareFloats(rx, 0) || CssUtils.CompareFloats(ry, 0))
{
/* edge case: If rx = 0 or ry = 0 then this arc is treated as a straight line segment (a "lineto")
* joining the endpoints.
*/
canvas.LineTo(end.x, end.y);
}
else
{
/* This is the first step of calculating a rotated elliptical path.
* We must simulate a transformation on the end-point in order to calculate appropriate EllipseArc angles;
* if we don't do this, then the EllipseArc class will calculate the correct bounding rectangle,
* but an incorrect starting angle and/or extent.
*/
EllipticalCurveTo.EllipseArc arc;
if (CssUtils.CompareFloats(rotation, 0))
{
arc = EllipticalCurveTo.EllipseArc.GetEllipse(start, end, rx, ry, sweep, largeArc);
}
else
{
AffineTransform normalizer = AffineTransform.GetRotateInstance(-rotation);
normalizer.Translate(-start.x, -start.y);
Point newArcEnd = normalizer.Transform(end, null);
newArcEnd.Translate(start.x, start.y);
arc = EllipticalCurveTo.EllipseArc.GetEllipse(start, newArcEnd, rx, ry, sweep, largeArc);
}
Point[][] points = MakePoints(PdfCanvas.BezierArc(arc.ll.x, arc.ll.y, arc.ur.x, arc.ur.y, arc.startAng, arc
.extent));
if (sweep)
{
points = Rotate(points, rotation, points[0][0]);
for (int i = 0; i < points.Length; i++)
{
DrawCurve(canvas, points[i][1], points[i][2], points[i][3]);
}
}
else
{
points = Rotate(points, rotation, points[points.Length - 1][3]);
for (int i = points.Length - 1; i >= 0; i--)
{
DrawCurve(canvas, points[i][2], points[i][1], points[i][0]);
}
}
}
}