PDFrenderer | Java library for rendering PDF documents | Document Editor library

by katjas Java Version: Current License: LGPL-2.1

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | PDFrenderer Summary

PDFrenderer is a Java library typically used in Editor, Document Editor applications. PDFrenderer has no bugs, it has no vulnerabilities, it has build file available, it has a Weak Copyleft License and it has low support. You can download it from GitHub.

Java library for rendering PDF documents to the screen using Java2D

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Quality

Security

License

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Support

PDFrenderer has a low active ecosystem.

It has 171 star(s) with 90 fork(s). There are 35 watchers for this library.

It had no major release in the last 6 months.

There are 12 open issues and 23 have been closed. On average issues are closed in 276 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of PDFrenderer is current.

Quality

PDFrenderer has 0 bugs and 0 code smells.

Security

PDFrenderer has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

PDFrenderer code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

PDFrenderer is licensed under the LGPL-2.1 License. This license is Weak Copyleft.

Weak Copyleft licenses have some restrictions, but you can use them in commercial projects.

Reuse

PDFrenderer releases are not available. You will need to build from source code and install.

Build file is available. You can build the component from source.

Installation instructions are not available. Examples and code snippets are available.

PDFrenderer saves you 9747 person hours of effort in developing the same functionality from scratch.

It has 20153 lines of code, 1620 functions and 184 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed PDFrenderer and discovered the below as its top functions. This is intended to give you an instant insight into PDFrenderer implemented functionality, and help decide if they suit your requirements.

Parses the stream
Adds text to the page
Returns a PDFFont from a PDFObject
Read an image from a dictionary
Undo the original image
Get bits from a bit array
Set bits in a bit array
Return the data as a byte buffer
Returns the length of the table
Returns the byte representation of this buffer
Undooes the image
Read the function information from a PDF object
Gets the outline tree
Create a PDF paint from a set of components
Parse a shader object
Parse the shader - specific data
Test whether the JCE is available for the JCE
Parses the widths array and returns the widths array
Set the data of the glyf
Initializes the operations necessary to perform the operations
Sets the data of this glyph
Sets the data contained in this map
Parses the database file
Reads the function information from a PDFObject
Parse a builtin font
Returns the data contained in this table

Get all kandi verified functions for this library.

PDFrenderer Key Features

No Key Features are available at this moment for PDFrenderer.

PDFrenderer Examples and Code Snippets

No Code Snippets are available at this moment for PDFrenderer.

Community Discussions

Trending Discussions on PDFrenderer

Strange bitmap flickering

Create a PDF Viewer in Jetpack Compose using PdfRenderer

How to set Item position in order after using ItemTouchHelper.Callback

How to render a pdf in android using pdf renderer

html-pdf not work in docker to create pdf

How to do more efficient render a pdf with PDFRender and show in LazyColumn in JetPack Compose

How to open secific range of pages in pdf instead of whole pdf

Problem previewing remote PDF in Android via Glide

PDAnnotationTextMarkup missing when rendering a pdf page to image PDFBox Java

Create a PDF file from a specific View

QUESTION

Strange bitmap flickering

Asked 2022-Mar-13 at 01:02

I'd like to optimize my recyclerview, I'm working on a pdf reader, and I found a small function to display the first page of my pdf files:

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ANSWER

Answered 2022-Mar-13 at 01:02

RecyclerViews work by creating a handful of item layouts, and reusing them to display other items (recycling them, hence the name). When a ViewHolder needs to display a new item, onBindViewHolder gets called, and that's where you set up the views in the item layout - setting text, changing images etc.

So if ViewHolder #4 displays a certain image, and then you scroll down to where ViewHolder #4 is reused, it will still display that image until you change it. At a guess, your image rendering code is quite slow, so it takes a long time for that change to actually happen. You also might get a situation where if you scroll far enough, #4 is used again, and now you have two rendering tasks queued up, so you might see the image change twice, etc.

Your simplest solution is probably to always display your placeholder PDF image, then fire off the renderer task - that way when you scroll to a new item, it'll never have the wrong image displayed temporarily. But you'll still need to cancel the stale coroutine job - it might be worth putting the display function in the ViewHolder itself, so it can fire off the task, keep its own Job reference, and cancel it if a new display call comes in.

You could use a cache, like an LRU cache, or a disk cache - it would definitely help with performance, but it complicates things a little and there are a lot of different solutions out there. You'll have to do some investigation to see what the right approach is for what you're doing, if you want to go that way.

Here's a page from the Android docs about efficient bitmap loading - I'm mainly linking this because they link to some recommended libraries you could look into. Some of them handle loading from files, so if you're doing the temp disk cache route, it could be useful. You'll have to see how easy it is to integrate them with the renderer you're using (since what you're doing is a little more complicated than just "load image")

One suggestion though - it looks like you're creating bitmaps at full PDF page size. I'm not sure if you need to do that for the rendering stage, but you'll definitely want to resize those for display, depending on the actual size of the image view in your list. Those libraries handle intelligent resizing to fit views - but even if you're not using one, your own caching will benefit from handling much smaller bitmaps

Source https://stackoverflow.com/questions/71451609

QUESTION

Create a PDF Viewer in Jetpack Compose using PdfRenderer

Asked 2022-Mar-07 at 14:09

I'm trying to create a PDF viewer composable using the PdfRenderer and Coil for loading the bitmaps into a LazyColumn. This is what I got so far:

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ANSWER

Answered 2021-Nov-12 at 16:32

I managed to solve it as follows:

Source https://stackoverflow.com/questions/69943176

QUESTION

How to set Item position in order after using ItemTouchHelper.Callback

Asked 2022-Feb-16 at 12:50

I am creating a document arrangement activity with RecyclerView. I want to arrange the document with drag and drop. It was done by using ItemTouchHelper.Callbackbut after that I can't set the page number after the OnItemMove callback. what should I do?

EDIT: added code snippet

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ANSWER

Answered 2022-Feb-16 at 12:50

You have to call notifyDataSetChanged() when an item position is changed. The easiest way it to used onItemClear(), it will be called when an item is de-selected. Add it like following.

Source https://stackoverflow.com/questions/71127053

QUESTION

How to render a pdf in android using pdf renderer

Asked 2022-Feb-04 at 12:15

Hello guys how do solve this my error log I'm trying to render pdfs using the android graphics pdfrenderer class in android I've tried to observe where or how I got it wrong but I can't see yet please guys how exactly do I achieve this using this particular class any idea will be very much appreciated.

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ANSWER

Answered 2022-Feb-04 at 05:52

there you can use this code. it's working fine for me

Source https://stackoverflow.com/questions/70981713

QUESTION

html-pdf not work in docker to create pdf

Asked 2021-Nov-12 at 13:03

i have an node js app which deploy into docker and using html-pdf library.

but when tried in local docker container, it return this error:

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ANSWER

Answered 2021-Oct-18 at 04:06

This error seems related to phantomjs and its also documented in there docs

https://www.npmjs.com/package/phantomjs#installation-fails-with-spawn-enoent

Installation fails with spawn ENOENT This is NPM's way of telling you that it was not able to start a process. It usually means:
node is not on your PATH, or otherwise not correctly installed. tar is not on your PATH. This package expects tar on your PATH on Linux-based platforms.

Source https://stackoverflow.com/questions/69610586

QUESTION

How to do more efficient render a pdf with PDFRender and show in LazyColumn in JetPack Compose

Asked 2021-Sep-21 at 12:21

i want to download a pdf file from FireStorage, render the file, add every page like ImageBitMap in a List and show in a LazyColumn. The problem is that it is very slow trying to scroll, even freezing 4-5 secs when page change.

Any ideas on how to make it more efficient and faster? Is there a library for JetPack Compose that I can use to make this better?

Thanks

PDFScreen.kt

...

ANSWER

Answered 2021-Sep-21 at 12:21

You should not make any heavy calculations or db/network calls directly from the composable functions.

All composite functions are view constructors and can be reconfigured (e.g., recalled) whenever the values of a changeable state change, and for animations - up to every frame. In your code, getFile query is executed when a new item is added to the list of changeable states making an endless cycle.

I suggest you start with the state in compose documentation, including this youtube video which explains the basic principles.

In your case, the fething code should be moved to view model: The PDFScreenViewModel object will be created when the view appears and destroyed when the view leaves the view hierarchy:

Source https://stackoverflow.com/questions/69268674

QUESTION

How to open secific range of pages in pdf instead of whole pdf

Asked 2021-Sep-10 at 22:37

How to modify the following code to open specific range of pages within the pdf for example from page 5 to 30 instead of opening the whole pdf. Thanks in advance

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ANSWER

Answered 2021-Sep-10 at 22:37

You can't modify a third party tool, where the option to change the site range programmatically isn't given. Thus, you can't use external Viewer without Endpoints to handle.

I recommend to watch for app internal PDF Viewer/Tools that you can modify by code.

Take a look at this post, it can help you to work around or use the mentioned open source tools. Cheers!

Source https://stackoverflow.com/questions/69138548

QUESTION

Problem previewing remote PDF in Android via Glide

Asked 2021-Aug-27 at 21:07

I'm trying to preview (thumbnail) PDF documents that are remotely, using the Glide library from bumptech, version 4.8.0. To achieve this, following the excellent tutorial Writing a custom ModelLoader, I've written a custom ModelLoader, a custom DataFetcher for the buildLoadData method; added the AppGlideModule, implemented ModelLoaderFactory and registered my ModelLoader. Inside the DataFetcher I've added some logic to process the following two cases:

The content is an image. Works like a charm!
The content is a PDF document. W/Glide: Load failed for https://www.testserver.net/folder/sample.pdf with size [522x600] class com.bumptech.glide.load.engine.GlideException: Failed to load resource

One approach has been to download the PDF file locally, and then render it (this DOES work), but it adds a considerable delay when having to download a file from a url and copy it locally; on the other hand, it doesn't take advantage of Glide's use of the cache.

Should I add another extra ModelLoader to use OkHttp3 instead of Volley (default)? Any ideas? Thanks in advance!

...

ANSWER

Answered 2021-Aug-09 at 05:57

You can show image and video thumbnails using Glide library if you want to show a pdf thumbnail you need to use the library for it e.g. Android PdfViewer. Then instead of using ImageView use PdfView and load only the first page instead of all e.g. .pages(0). That's it. In your xml/layout

Source https://stackoverflow.com/questions/68704483

QUESTION

PDAnnotationTextMarkup missing when rendering a pdf page to image PDFBox Java

Asked 2021-Mar-10 at 12:01

I have code written using PDFBox API that highlights the words in a PDF but when I convert highlighted PDF pages to images, then whatever I have highlighted gets disappeared from the image.

Below screenshot is with highlighted text, for highlighting I have used PDFBox's PDAnnotationTextMarkup class:

Highlighted PDF Page

Below is the image after converting the pdf page to image:

Highlighted PDF Page Image after converting

Below is the code I have used for converting PDF to Image:

...

ANSWER

Answered 2021-Mar-10 at 12:01

You need to construct the visual appearance of the annotation with this call:

Source https://stackoverflow.com/questions/66559511

QUESTION

Create a PDF file from a specific View

Asked 2021-Feb-25 at 18:01

I would like to create a PDF file from a View X. The code reported and extracted from Alex's question works but creates a PDF of the Main View only (View A). How can I tell him to create a PDF of the View X?

Convert SwiftUI View to PDF on iOS

...

ANSWER

Answered 2021-Feb-03 at 10:55

From the answer of the linked question:

You render the HostingController on a window behind all other views and and draw its layer on a PDF.

That would be the first view, index 0 I presume. From the function you gave, this line looks relevant:

Source https://stackoverflow.com/questions/66025830

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install PDFrenderer

You can download it from GitHub.
You can use PDFrenderer like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the PDFrenderer component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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