////////////////////////////////////////////////////////////////////
// Draw image of a flower and clip it
////////////////////////////////////////////////////////////////////
private void DrawFlower
(
PdfDocument Document,
PdfContents Contents
)
{
// define local image resources
PdfImage Image1 = new PdfImage(Document, "flower.jpg");
// image size will be limited to 1.4" by 1.4"
SizeD ImageSize = Image1.ImageSize(1.4, 1.4);
// save graphics state
Contents.SaveGraphicsState();
// translate coordinate origin to the center of the picture
Contents.Translate(3.36, 5.7);
// clipping path
Contents.DrawOval(-ImageSize.Width / 2, -ImageSize.Height / 2, ImageSize.Width, ImageSize.Height, PaintOp.ClipPathEor);
// draw image
Contents.DrawImage(Image1, -ImageSize.Width / 2, -ImageSize.Height / 2, ImageSize.Width, ImageSize.Height);
// restore graphics state
Contents.RestoreGraphicsState();
return;
}
/// <summary>
/// Add an image to the current page with a specified width
/// </summary>
/// <param name="path">Image file path</param>
/// <param name="width">Target width for image in mm</param>
/// <param name="options">ImageOptions</param>
public void AddImage(string path, double width, ImageOptions options = null)
{
this.checkBuilderState();
if (options == null)
{
options = new ImageOptions()
{
PositionX = this.PagePositionX,
PositionY = this.PagePositionY
};
}
// load the image from size and determine it new pixel dimensions based on relative resolutions
var srcBitmap = new Bitmap(path);
double srcBitmapAspectRatio = srcBitmap.Size.Height / (srcBitmap.Size.Width * 1.0);
double widthInInches = width / 25.4;
int widthInPixels = Convert.ToInt32(Math.Round(widthInInches * srcBitmap.HorizontalResolution));
int heightInPixels = Convert.ToInt32(Math.Round(widthInPixels * srcBitmapAspectRatio));
// resize the source image and load into pdf
var targetBitmap = Helpers.Image.Resize(srcBitmap, widthInPixels, heightInPixels, Color.White);
PdfImage pdfImage = new PdfImage(this.document);
pdfImage.Resolution = options.Resolution;
pdfImage.ImageQuality = options.Quality;
pdfImage.LoadImage(targetBitmap);
this.contents.SaveGraphicsState();
// Height is calculated from width as per aspect ratio
double height = width * pdfImage.HeightPix / pdfImage.WidthPix;
SizeD newSize = pdfImage.ImageSize(width, height);
var positionX = options.PositionX;
var positionY = options.PositionY - newSize.Height;
this.contents.DrawImage(pdfImage, positionX, positionY, newSize.Width, newSize.Height);
this.contents.RestoreGraphicsState();
this.pagePosition.Y = positionY;
}
