B4A Library LGauges - Gauges generation [Library] [Open Source Code]

NEW: Liberation of LGauges source code in the post #35


The purpose of the library LGauges, is simply to show gauges for measurement.

Attention: you need to load the library Base64Image, to use LGauges

LGauges
Author: Vampirbcn
Version: 2.0

LGauges
Methods:

Initialize (thepanel As Panel, x As Int, y As Int)
-Initialize the object
SelectGauge(model as int)
-Select gauge dessign
SetTBorder(Thickness As Int)
-Set the gauge border width
SetSize(Thesize As Int)
-Set the gauge size
ActivateBorderAutoColor(activate as boolean)
-Enable or disable the automatic generation of color on the border
SetBorderColor(Thecolor As Int)
-Set the fixed border color
SetHandColor(Thecolor As Int)
-Set the hand color
SetValuesColor(Thecolor As Int)
-Set the color of values of gauge
SetFirstValue(value As Int)
-Set the first number of the displayed values
SetLastValue(value As Int)
-Set the last number of the displayed values
ChangeValue(value As Int)
-Change the value represented by the hand​

Image examples:



Example code:

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
End Sub

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.
    Dim thegauge As LGauges

    Dim Panel1 As Panel
End Sub

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    Activity.LoadLayout("Main")
    thegauge.Initialize(Panel1,40,40)
    thegauge.SelectGauge(1)
End Sub

-. Sorry for my bad English. -

 

[bluedude]

Cool!

 

[ciprian]

it seems to work without the base64image library. what's using this? Am i missing something?

 

[vampirbcn]

Base64image library used to generate images of the gauges. Surely you have installed the library base64image and although not activated LGauges need this.


-. Sorry for my bad English. -

 

[ciprian]

Thankyou for the fast answer.
Another question. How can we set negative values for the min and max values?

 

[vampirbcn]

Example for display a negative initial value
SetFirstValue(-50)
SetLastValue(150)

in this case:
ChangeValue(0) is the equivalent to show -50
ChangeValue(100) is the equivalent to show 150

--------------------
Example display negative values in the gauge:

SetFirstValue(-50)
SetLastValue(-500)

in this case:
ChangeValue(0) is the equivalent to show -50
ChangeValue(100) is the equivalent to show -500

 

[ciprian]

Thankyou. I have tried into the exemple to set the min value with the seekbar. Thats why i asked this. Now it's clear. Thankyou. Great lib

 

[Rick in North Carolina]

Oh I could have used this 1 year ago.... but I look forward to trying it in the future. Nice work.

 

[bluedude]

Awesome, would be nice to add some VU meters etc.

 

[vampirbcn]

Good idea bluedude, I'll try it on the next version

 

[ciprian]

Hi there. I'm having a problem with the image of the gauge.
I have changed the color of the panel1 to black.
When i look at the image of gauge, it's having some white points round the border.
Where can i find the images to try to adjust the white points?

 

[vampirbcn]

Hi Ciprian,

Unable to access images, are included and compressed in the jar file.

If you use a black background and white dots out, you can draw a black circle around the gauge, covering the edge. Not the best solution, but these white points disappear.

If you want the images to try to adjust the points or enhance the resolution, just give me your email.




-. Sorry for my bad English. -

 

[ciprian]

I have sent you a mail....or new conversation.

 

[Afsal]

hello,

I can't run the application its just stop unexpectedly
I am using the b4a version is 2.52


thanks

 

[Erel]

You should check the logs for the error message.

 

[ciprian]

Are you missing the base64image library ?

 

[Afsal]

the message is like this

Sorry!
the application B4A example (process b4a. example) has stopped unexpectedly. please try again



I already insert base64image library in library folder and make it tick in reference library



thanks

Afsal

 

[Afsal]

main_globals (java line: 324)
java.lang.NoClassDefFoundError: logic.LGauges.lgauges
at b4a.example.main._globals(main.java:324)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at b4a.example.main.initializeGlobals(main.java:226)
at b4a.example.main.afterFirstLayout(main.java:86)
at b4a.example.main.access$100(main.java:16)
at b4a.example.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3770)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:912)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:670)
at dalvik.system.NativeStart.main(Native Method)

this is the error I am getting in the log window.



Regards

Afsal

 

[Afsal]

hello,

I am a beginner Please replay somebody the reason of error?






thanks

 

[ciprian]

Without your code, nobody can help finding the error.
Can u make a litle project to reproduce this behaviour?