private void AddLinearGradientAsElementBackground(Document doc)
{
doc.Add(new Paragraph("The \"addLinearGradientAsElementBackground\" starts here."));
AbstractLinearGradientBuilder gradientBuilder = new StrategyBasedLinearGradientBuilder()
.AddColorStop(new GradientColorStop(ColorConstants.RED.GetColorValue()))
.AddColorStop(new GradientColorStop(ColorConstants.GREEN.GetColorValue()))
.AddColorStop(new GradientColorStop(ColorConstants.BLUE.GetColorValue()));
BackgroundImage backgroundImage = new BackgroundImage.Builder().SetLinearGradientBuilder(gradientBuilder).Build();
if (backgroundImage.IsBackgroundSpecified())
{
String text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, " +
"sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. " +
"Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi " +
"ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit " +
"in voluptate velit esse cillum dolore eu fugiat nulla pariatur. " +
"Excepteur sint occaecat cupidatat non proident, sunt in culpa qui " +
"officia deserunt mollit anim id est laborum. ";
Div div = new Div().Add(new Paragraph(text + text + text));
div.SetProperty(Property.BACKGROUND_IMAGE, backgroundImage);
doc.Add(div);
}
else
{
Console.Out.WriteLine("There are no linear gradient elements present within the passing image.");
}
}
public virtual void BackgroundImageClipOriginNoRepeatTest()
{
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(new ByteArrayOutputStream()));
byte[] bytes = new byte[] { 54, 25, 47, 15, 2, 2, 2, 44, 55, 77, 86, 24 };
PdfXObject rawImage = new _PdfImageXObject_544(ImageDataFactory.CreateRawImage(bytes));
PdfCanvas pdfCanvas = new _PdfCanvas_555(rawImage, pdfDocument.AddNewPage());
DrawContext drawContext = new DrawContext(pdfDocument, pdfCanvas);
AbstractRenderer renderer = new DivRenderer(new Div().SetPadding(20).SetBorder(new DashedBorder(10)));
renderer.occupiedArea = new LayoutArea(1, new Rectangle(100f, 200f, 300f, 400f));
BackgroundImage backgroundImage = new BackgroundImage.Builder().SetImage(rawImage).SetBackgroundRepeat(new
BackgroundRepeat(BackgroundRepeat.BackgroundRepeatValue.NO_REPEAT)).SetBackgroundClip(BackgroundBox.CONTENT_BOX
).SetBackgroundOrigin(BackgroundBox.BORDER_BOX).Build();
renderer.SetProperty(Property.BACKGROUND_IMAGE, backgroundImage);
renderer.DrawBackground(drawContext);
}
public virtual void BackgroundLinearGradientClipOriginNoRepeatTest()
{
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(new ByteArrayOutputStream()));
byte[] bytes = new byte[] { 54, 25, 47, 15, 2, 2, 2, 44, 55, 77, 86, 24 };
PdfCanvas pdfCanvas = new _PdfCanvas_589(pdfDocument.AddNewPage());
DrawContext drawContext = new DrawContext(pdfDocument, pdfCanvas);
AbstractRenderer renderer = new DivRenderer(new Div().SetPadding(20).SetBorder(new DashedBorder(10)));
renderer.occupiedArea = new LayoutArea(1, new Rectangle(100f, 200f, 300f, 400f));
Rectangle targetBoundingBox = new Rectangle(50f, 150f, 300f, 300f);
AbstractLinearGradientBuilder gradientBuilder = new LinearGradientBuilder().SetGradientVector(targetBoundingBox
.GetLeft() + 100f, targetBoundingBox.GetBottom() + 100f, targetBoundingBox.GetRight() - 100f, targetBoundingBox
.GetTop() - 100f).SetSpreadMethod(GradientSpreadMethod.PAD).AddColorStop(new GradientColorStop(ColorConstants
.RED.GetColorValue(), 0d, GradientColorStop.OffsetType.RELATIVE)).AddColorStop(new GradientColorStop(ColorConstants
.BLUE.GetColorValue(), 1d, GradientColorStop.OffsetType.RELATIVE));
BackgroundImage backgroundImage = new BackgroundImage.Builder().SetLinearGradientBuilder(gradientBuilder).
SetBackgroundRepeat(new BackgroundRepeat(BackgroundRepeat.BackgroundRepeatValue.NO_REPEAT)).SetBackgroundClip
(BackgroundBox.CONTENT_BOX).SetBackgroundOrigin(BackgroundBox.BORDER_BOX).Build();
renderer.SetProperty(Property.BACKGROUND_IMAGE, backgroundImage);
renderer.DrawBackground(drawContext);
}
