On 7 Nov 2014, at 04:48, Kernel freak <[email protected]> wrote: > > Hello friends, > > I am using PDFBox to create PDF's. Thanks to some members in the mailing > list, especially : Maruan Sahyoun, I am nicely acquainted with the > platform, and now know how to achieve basic tasks. > > While creating the PDF, I am looking for the page size to be A4(already set > by PAGE_SIZE.A4), the page rotation in potrait mode, which is by default.
Yes, you start with portrait A4. Then you call PDPage#setRotation to rotate the page, which also rotates the graphics. > Problem : I would like to enter data in landscape mode. So basically, the > text should start from left bottom end of the page which is in potrait mode > and 90 degree tilted. Be aware that PDF has its (0,0) coordinate at the bottom left of the page, unlike most graphics APIs which put (0,0) in the top-right. PDF’s graphics work in a conceptually similar way to Graphics2D, so if you want to rotate the drawing surface (or if you want to flip the y-axis so that (0,0) is at the top-left) then you need to apply an affine transform. In Graphics2D this is done by calling #transform(AffineTransform) and in PDFBox it is done by calling #concatenate2CTM(Matrix) on the current PDPageContentStream. You want to apply a transform which rotates the page content in the opposite direction to which setRotation rotated it, and then translates the origin to be at the top-left of the page. — John
