PDF417BarcodeEncoder | PDF417 barcode encoder class library | Barcode Processing library
kandi X-RAY | PDF417BarcodeEncoder Summary
kandi X-RAY | PDF417BarcodeEncoder Summary
The PDF417 barcode encoder class library is written in C#. It is open source code. The target framework is .NET Framework (net462) and .NET Standard (netstandard2.0). The encoder library allows you to create a PDF417 barcode image from a text string or a binary (byte) array. Two demo/test applications are included. Windows form application and console application targeting .NET framework (net462) and .NET Core (netcoreapp2.2). Both allows you to explore the library and produce PDF417 barcodes. The full article is available at Both .NET core and .NET standard do not support the Bitmap class included in the System.Drawing assembly. The library includes a PNG image builder that can run in the .NET Standard and .NET core environment. This image is extremely efficient. It takes advantage of the compression and filtering of the PNG standard. Saving barcode image 564 by 232 pixels takes 617 bytes by this software. Using Bitmap with file type PNG takes 16,865. Using Bitmap with file type JPEG takes 21,121 bytes. PDF417 is a two-dimensional barcode. The barcode documentation and specification can be found in the following websites: Wikipedia provides a good introduction to PDF417. Click here to access the page. The PDF417 standard can be purchased from the ISO organization at this website. An early version of the specifications is freely available to be downloaded at this website. I strongly recommend that you download this document if you want to fully understand the encoding options. The PDF417 barcode encodes text or binary array of bytes into an image of black and white bars. The attached software converts the text or binary array into a PDF417 barcode Bitmap image. If the input data is a text string it will first be converted to a binary array using ISO 8859-n standard as defined here. The binary array of bytes is converted to codewords. Each codeword is a number in the range of 0 to 928. This conversion process divides the input bytes into segments. There are three types of segments: text, bytes and numeric. Each segment type is compressed: text as 2 data characters per codeword, byte as 1.2 data characters per codeword and numeric as 2.93 data characters per codeword. To ensure barcode integrity, error correction and detection codewords are appended to the data codewords. There are 9 levels of error correction. The codewords are divided into rows and columns. Each codeword is converted to a symbol, sequence of alternating four black and four white bars. A narrow bar is a module. In total there are 17 modules for each codeword. Bar width vary from one to six modules. Each codeword is translated into one of three symbols. Symbol 1 is for row 1, 4, 7 etc. symbol 2 is for row 2, 5, 8 etc. and symbol 3 if for rows 3, 6, 9 etc. The software attached to this article is a PDF417 Encoder library and two demo/test programs. This article explains how to install the software. How to integrate the encoder library to your application and produce a barcode image. And how to use the demo/test programs.
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QUESTION
I've been upgrading my CRA project to TailwindCSS 3, but now CSS nesting no longer works. Upon starting the server, the console spits out:
...ANSWER
Answered 2022-Feb-03 at 18:38This is mostly just bad news.
Create React App's Tailwind support means that they will detect tailwind.config.js
in the project and add tailwindcss
to their existing postcss
configuration. Source in CRA
The guide that Tailwind offers on their site creates a dummy postcss.config.js
- Making changes in this file does not change the actual postcss configuration. (misleading if anything)
This is a known issue currently - Github discussion on Tailwind support PR between Adam Wathan (Tailwind founder) and Ian Sutherland (CRA maintainer). But it does not seem like there is an intention to be fixed soon.
If you want to use nesting (or any PostCSS plugin really) is to eject from CRA using:
QUESTION
I'm attempting to create an apollo client
plugin for a Nuxt 3
application. It's currently throwing an error regarding a package called ts-invariant
:
ANSWER
Answered 2022-Jan-07 at 01:52Solved by including @apollo/client
and ts-invariant/process
into the nuxt build transpile like so:
QUESTION
Very first try on Nuxt3 via Nuxt3 Starter
I wonder how can I use tailwindcss in Nuxt3 Starter manually.
(Not via @nuxtjs/tailwindcss , because it's for Nuxt2, and not work with Nuxt3.)
I created a blank Nuxt3 project by
...ANSWER
Answered 2021-Oct-04 at 04:17Maybe your problem is because you need a tailwindcss.config.js
.
For this, simply type in the console:
QUESTION
In a fresh Laravel 9 installation, the URL processing from Laravel Mix does not work anymore.
npm outputs the following:
...ANSWER
Answered 2022-Feb-22 at 10:55Actually moving the css imports into resources/js/app.js
solves this problem. However, this results in the imported css to be included in the public/js/app.js
, not the public/css/app.css
.
QUESTION
I'm trying the create a 3D subscene with objects being labelled using Label objects in a 2D overlay. I've seen similar questions to mine on this subject, and they all point to using the Node.localToScene method on the node to be labelled in the 3D space. But this doesn't seem to work for my case. I've taken example code from the FXyz FloatingLabels example here:
The Label objects need to have their positions updated as the 3D scene in modified, which I've done but when I print out the coordinates returned by the Node.localToScene method, they're much too large to be within the application scene, and so the labels are never visible in the scene. I've written an example program that illustrates the issue, set up very similarly to the FXyz sample code but I've created an extra SubScene object to hold the 2D and 3D SubScene objects in order to plant them into a larger application window with slider controls. The 3D scene uses a perspective camera and shows a large sphere with coloured spheres along the x/y/z axes, and some extra little nubs on the surface for reference:
...ANSWER
Answered 2022-Feb-02 at 12:28If you follow what has been done in the link you have posted you'll make it work.
For starters, there is one subScene, not two.
So I've removed these lines:
QUESTION
I am new to angular and was following the documentation to build a basic app.
Node - v14.7.3
npm - 7.22.0
Angular CLI: 12.2.4
OS: win32 x64
@angular-devkit/architect 0.1202.4
@angular-devkit/build-angular 12.2.4
@angular-devkit/core 12.2.4
@angular-devkit/schematics 12.2.4
@schematics/angular 12.2.4
rxjs 6.6.7
typescript 4.3.5
So far all I have done is
npm install @angular/cli
followed by ng new firstApp
and ng serve
Following is the error that I am receiving,
...ANSWER
Answered 2021-Sep-10 at 07:17Try to install those modules separately npm install
:
QUESTION
I've installed tailwind using npm install tailwindcss
I then create my src/style.css file and include
ANSWER
Answered 2021-Dec-25 at 20:47You need to add a config js file for the tailwind engine, inside the config file use content
attribute to define where is your HTML or JS files, the new engine automatically looks inside these files and compiles only the classes that you used.
Check this video for more information:https://youtu.be/mSC6GwizOag?t=22
QUESTION
I am testing a library like follows:
...ANSWER
Answered 2022-Jan-20 at 14:01Here's the equivalent C++20 code to your first version of FromDateTime
:
QUESTION
I'm looking for ways to count the number of trailing newlines from possibly binary data either:
- read from standard input
- or already in a shell variable (then of course the "binary" excludes at least 0x0) using POSIX or coreutils utilities or maybe Perl.
This should work without temporary files or FIFOs.
When the input is in a shell variable, I already have the following (possibly ugly but) working solution:
...ANSWER
Answered 2022-Jan-18 at 13:29Using GNU awk for RT
and without reading all of the input into memory at once:
QUESTION
I want to create dark mode for a web site which use bootstrap. I have to add new root class which includes all boostrap colors. Here is my colors.scss:
...ANSWER
Answered 2021-Aug-07 at 20:32As explained here, there's no way to attach a class to :root
. However, you don't need this to achieve what you want.
Simply make a dark
class then you can add that as desired to the html or body tag.
Make all the needed theme color changes inside .dark{}, and then @import "bootstrap". When .dark
doesn't exist on the body, the theme colors will return to Bootstrap defaults.
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