https://github.com/iron-software/pdfiumissue1893

Pdfium issue 1893
https://github.com/iron-software/pdfiumissue1893

Last synced: 3 months ago
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Pdfium issue 1893

• Host: GitHub
• URL: https://github.com/iron-software/pdfiumissue1893
• Owner: iron-software
• Created: 2022-11-30T04:15:25.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2022-11-30T06:02:33.000Z (about 3 years ago)
• Last Synced: 2025-03-21T20:39:11.270Z (10 months ago)
• Language: C
• Size: 1.63 MB
• Stars: 1
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# PdfiumIssue1893

For https://bugs.chromium.org/p/pdfium/issues/detail?id=1893

## Description

Issue: Page content matrices are broken after removing an object

Input: elvis.pdf

Output: result.pdf

## Process

1. open document

2. load page & object

3. remove object

4. generate content

5. close page

6. save doc bytes to disk

## Before and After

![screenshot of before and after](https://github.com/iron-software/PdfiumIssue1893/blob/main/Before%20and%20After.png?raw=true)

## Which Object is Being Removed?

![screenshot of removed object](https://github.com/iron-software/PdfiumIssue1893/blob/main/Which%20Object%20is%20Removed.png?raw=true)

## Workaround

Invoke FPDFPage_TransFormWithClip() and FPDFPage_SetMediaBox() upon opening a document (without actually changing its size) in order to "reset" or re-calculate the apperance streams.

Set use_fix=true to demonstrate the workaround.