Java 使用 ITEXT 将图像拟合为 PDF

Fitting image into PDF using ITEXT

提问by user2582318

Hi im having some problems to add the image into the PDF using the itextPDF...

嗨，我在使用 itextPDF 将图像添加到 PDF 时遇到了一些问题...

i have more than 10.000 images scanned from original paper in past years, and different sizes/pixels

在过去的几年里，我从原始纸张上扫描了 10.000 多张图像，并且具有不同的尺寸/像素

when i add image into pdf using

当我使用

img.scaleAbsolute(823,640) or img.scaleToFit(823,640)

img.scaleAbsolute(823,640) 或 img.scaleToFit(823,640)

doesnt change the result of each image, for example this ones:

不会改变每个图像的结果，例如这个：

First One 654 is the correct one that fit perfectly in the pdf PAGE, the original tiff image has (2048 x 2929)

第一个 654 是正确的，完全适合 pdf PAGE，原始 tiff 图像具有 (2048 x 2929)

here image ->

这里的图像 - >

here is the second one 9436 that original tiff image has (1470 x 2057)

这是原始 tiff 图像具有的第二个 9436 (1470 x 2057)

look the MARGIN of the pdf in the first and in the second one...

在第一个和第二个中查看 pdf 的边距...

there is a way to make EVERY image like the 654, no matter the original size??

有一种方法可以使每个图像都像 654 一样，无论原始大小如何？？

thanks, aprreciate any idea, or i will have to open all the image in paint and edit it :(

谢谢，感谢任何想法，否则我将不得不在油漆中打开所有图像并对其进行编辑:(

采纳答案by user2582318

Solved for me:

为我解决：

//if you would have a chapter indentation
int indentation = 0;
//whatever
Image image = coolPic;

float scaler = ((document.getPageSize().getWidth() - document.leftMargin()
               - document.rightMargin() - indentation) / image.getWidth()) * 100;

image.scalePercent(scaler);

from @Franz Ebner

来自@Franz Ebner

iText Image Resize

iText 图像调整大小

回答by GregD

I know it's an old question, but I was looking for it myself and I've found:

我知道这是一个老问题，但我自己也在寻找，我发现：

Image image = ...;
image.scaleToFit(PageSize.A4.getWidth(), PageSize.A4.getHeight());

found it useful enough to share here.

发现它足够有用，在这里分享。