Develop Reference

Animation in vb with wpf

I am working on vb project in visual studio 2015.I need to animate the text "Darkode" from left to right.
I tried the following code which i pulled from the internet,
<Window.Triggers>
<EventTrigger RoutedEvent="Window.Loaded">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Duration="0:0:.8" Storyboard.TargetProperty="Left" From="1920" To="0" AccelerationRatio=".1"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Window.Triggers>
But i didn't understand it Correctly? I need more clarification on the topic.

I had encountered a similar situation where i had to Animate my logo. After searching for hours in the internet i found a solution which was not very useful to me but given your situation (animate a text from left to right) ,it will be more useful to you.
Here is the code :
Private Sub trmText_Timer()
If lblCaption.Caption <> StrCap Then
lblCaption.Caption = Left(StrCap, Len(lblCaption.Caption) + 1)
Else
lblCaption.Caption = ""
End If
End Sub
Here is the source for the code:http://www.setha.info/ict-visualbasic6/72-ict-vb6-0013.html
Here is the link for my qusetion :Animation of words in visual studio
Explanation
Unlike the code you posted in your question which uses storyboard for animation the above code uses Timer control for animation.
In the above code StrCap contains your text darkode and
lblCaption.Caption is an empty string onto which you iterativly put you text charater by charater on each iteration.
Heres a link if you want to know more about timer control :Timer Control

Taking Screenshots Using Qt C++ on Android

thanks for checking my question out!
I'm currently working on a project using Qt C++, which is designed to be multi-platform. I'm a bit of a newcoming to it, so I've been asked to set up the ability to take screenshots from within the menu structure, and I'm having issues with the Android version of the companion app.
As a quick overview, it's a bit of software that send the content of a host PC's screen to our app, and I've been able to take screenshots on the Windows version just fine, using QScreen and QPixmap, like so:
overlaywindow.cpp
{
QPixmap screenSnapData = screenGrab->currentBackground();
}
screenGrabber.cpp
{
QScreen *screen = QGuiApplication::primaryScreen();
return screen->grabWindow( QApplication::desktop()->winId() );
}
Unfortunately, Android seems to reject QScreen, and with most suggestions from past Google searches suggesting the now-deprecated QPixmap::grab(), I've gotten a little stuck.
What luck I have had is within the code for the menu itself, and QWidget, but that isn't without issue, of course!
QFile doubleCheckFile("/storage/emulated/0/Pictures/Testing/checking.png");
doubleCheckFile.open(QIODevice::ReadWrite);
QPixmap checkingPixmap = QWidget::grab();
checkingPixmap.save(&doubleCheckFile);
doubleCheckFile.close();
This code does take a screenshot, but only of the button strip currently implemented, and not for the whole screen. I've also taken a 'screenshot' of just a white box with the screen's dimensions by using:
QDesktopWidget dw;
QWidget *screen=dw.screen();
QPixmap checkingPixmap = screen->grab();
Would anyone know of whether there was an alternative to using QScreen to take a screenshot in Android, or whether there's a specific way to get it working as compared to Windows? Or would QWidget be the right track? Any help's greatly appreciated!

as i can read in Qt doc : In your screenGrabber.cpp :
QScreen *screen = QGuiApplication::primaryScreen();
return screen->grabWindow( QApplication::desktop()->winId() );
replace with :
QScreen *screen = QGuiApplication::primaryScreen();
return screen->grabWindow( 0 ); // as 0 is the id of main screen

If you want to take a screenshot of your own widget, you can use the method QWidget::render (Qt Doc):
QPixmap pixmap(widget->size());
widget->render(&pixmap);
If you want to take a screenshot of another app/widget than your app, you should use the Android API...

How to display source code "prettily" in android app

everyone.
[What I'd like to do]
To display source code "prettily" in android app. Like this.
At least if there are indents, it's fine.
[Why?]
Because I'm developing an android app where users can see Views and its source code at the same time.
[Issue]
Showing source codes on TextView looks ugly. A lot of escape characters needed for <> and the text layout collapsed. Googling and searching on Stackoverflow didn't give me any useful information.
Any help would be appreciated. Thanks!
(update 2015/11/23)
These link might be useful when you use WebView to display source codes.
- How can I display HTML source code within a HTML website? [duplicate]
- How to display source code with indent in a web page? HTML? CSS?

Displaying the text in a WebView is a great idea as you can now use javascript APIs like Google's Code Prettify
I believe SO uses it ;)
The comments in prettify.js are authoritative but the lexer should
work on a number of languages including C and friends, Java, Python,
Bash, SQL, HTML, XML, CSS, Javascript, Makefiles, and Rust.
It works passably on Ruby, PHP, VB, and Awk and a decent subset of
Perl and Ruby, but, because of commenting conventions, doesn't work on
Smalltalk, OCaml, etc. without a language extension.
Other languages are supported via extensions:
Apollo; Basic; Clojure; CSS; Dart; Erlang; Go; Haskell; Lasso; Lisp,
Scheme; Llvm; Logtalk; Lua; Matlab; MLs: F#, Ocaml,SML; Mumps;
Nemerle; Pascal; Protocol buffers; R, S; RD; Rust; Scala; SQL; Swift;
TCL; Latek; Visual Basic; VHDL; Wiki; XQ; YAML

I think this question is a tricky one. I tried to google myself and only find this library
https://android-arsenal.com/details/1/2049
which supports different text appearence. Hope this will help you out.

How to import a SpriteFont into MonoGame

I'm porting a simple tetris-like XNA app to Android, using Mono For Android and MonoGame; I have followed the suggested steps in this link and so far, everything compiles well, and no relevant warnings fire up. However, upon loading the contents, a null parameter exception breaks the program at the point below in my program:
protected override void LoadContent() {
// ...
_font = Content.Load<Microsoft.Xna.Framework.Graphics.SpriteFont>("SpriteFont1");
// ...
}
The content root directory is set in the game constructor class:
public Game2 (){
Content.RootDirectory = "Content";
Content.RootDirectory = "Assets/Content"; // TEST.
//...}
And I have tried several combinations, all to no avail.
I have also tried setting the xnb files as Content as well as Android Assets in the Build Action property; having the linked, copied always, copied only if newer... etc.
Either way, my problem is that I don't really understand WHY and HOW should I do this. I'm rather new to the platform and to XNA as well, so this may very well be a newbie question, but the truth is after several hours banging my head and fists against the monitor/keyboard I feel stuck and need your help.

I have a library that supports variable-width fonts (generated by BMFont) on MonoGame. Unfortunately it is a renderer and so has other code around it. However, the basic idea is very simple. You can take a look at the loader here and the mesh builder (given a string) here. This builder supports fonts that spread characters across multiple pages, too.
Hope this helps!

MonoGame (2.5.1) throws NotImplementedException in ContentManager.Load for SpriteFont type. Have the same not resolved problem. I'm trying not to use DrawString.
For loading textures in Win32 application I use:
Content.RootDirectory = #"../../Content";
var sampleTexture = Content.Load<Texture2D>("Sample.png");
You even must not add it to solution.
For Andoind (MonoDroid) application you must add "Content" folder to your solution and set "Andtoid Asset" in "Sample.png" properties.
Content.RootDirectory = "Content";
var sampleTexture = Content.Load<Texture2D>("Sample.png");
See also:
http://monogame.codeplex.com/discussions/360468
http://monogame.codeplex.com/discussions/267900

How to practically display math formula in Android

I researched on this for quite a while and I know this kind of questions already answered. But I couldn't find a right answer showing how to practically deal with math formula in Android app. Without including large amount (5~20MB) of files in the Android project, it seems that there is no way to parse & display math formula script like MATHML. I looked at JEuclid and MathJax that were mentioned a lot for Android but I found them in this category.
So at this point, the only way I can think of is to take each of those formula in a image file and display it on Android. But in practice, that manual process is really slow. I am sure this is not a right way.
So I have to ask this again. How to practically display math formula in your Android app?

You can not set maths formula to TextView in android. You have to use WebView in which you can display maths formulae. See mathjax for more information.
if you want to display for android then here is library you can implement in your project. mathjaxwebview

If you want to parse Tex(Inline mode and display mode) formats and ASCII math format you can use this link .I used the above math view given in this link to display formula.It worked like a charm adding to that download mathjax from official site and get fonts folder and put it in your assets folder. It will definitely work.
https://github.com/Nishant-Pathak/MathView
download math view form above link.

The libraries which are using WebView to wrap latex-rendering-js-library (e.g., this, this and this), are not working well with the RecyclerView and will make the app slow. And they are not even updating the js libraries.
Finally, I found "noties/jlatexmath-android", which is using "opencollab/jlatexmath" native Java library. It is fast and can be easily used with RecyclerView.
Sample usage of JLatexMathView:
implementation "ru.noties:jlatexmath-android:$jlatexmath_version"
// for Cyrillic symbols
implementation "ru.noties:jlatexmath-android-font-cyrillic:$jlatexmath_version"
// for Greek symbols
implementation "ru.noties:jlatexmath-android-font-greek:$jlatexmath_version"
<ru.noties.jlatexmath.JLatexMathView
android:id="#+id/j_latex_math_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dip"
android:background="#color/white"
app:jlmv_alignVertical="center"
app:jlmv_alignHorizontal="center"
app:jlmv_textSize="16sp" />
val latexText = "\$\$f(x)=(x+a)(x+b)\$\$"
binding.jLatexMathView.setLatex(latexText)
You can also use it as an extension of "noties/Markwon", a Markdown library for Android. Details can be found here.
Sample Usage of Markwon:
implementation "io.noties.markwon:core:$markwon_version"
implementation "io.noties.markwon:ext-latex:$markwon_version"
implementation "io.noties.markwon:inline-parser:$markwon_version"
<TextView
android:id="#+id/tv_markdown"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
val markwon = Markwon.builder(requireContext())
.usePlugin(MarkwonInlineParserPlugin.create())
.usePlugin(JLatexMathPlugin.create(binding.tvMarkdown.textSize) { builder ->
// ENABLE inlines
builder.inlinesEnabled(true)
})
.build()
val latexText = "Example: \$\$f(x)=(x+a)(x+b)\$\$"
markwon.setMarkdown(binding.tvMarkdown, latexText)

You can implement with MathType.
But your data for display must be in MathType format
https://docs.wiris.com/en/mathtype/mathtype_web/sdk/mobile-apps