B4J Library [B4X] [XUI] xGauges Class

The xGauges Class does now also exist as a B4X libary.
The xGauges.b4xlib and the xGauges.xml files are attached.
You need to copy the xGauges.b4xlib file to the AdditionlLibraries\B4X folder!
Don’t copy the xGauges.xml file to the AdditionalLibraries folder, copy it in another folder for all b4xlib xml files.
Example: AdditionlLibraries\B4XlibXMLFiles
The xGauges.xml file is for help purposes and is useful with the B4X Help Viewer or the B4XObjectBrowser.
The xGauges.xml was generated with this tool: b4xlib - XML generation

Having seen this thread fuel gauge, it challenged me and I wrote this CustomView xGauges Class.
It works on all three products: B4A, B4i and B4J.
The xGauges.bas file is located in the B4J project and shared, relative link, in B4A and B4i.
The code is exactly the same, one class file, for all three products.

Demoprograms for all three products.
Tested on PC, Android Samsung S6 and iPhone 6.

EDIT: 2019.03.12 Version 1.5
Amended cScaleMidLimitColor initialize value from 526 to 255
Amended setScaleColor missing reinitialize call routine
Amended Rotate Needle equation correction
Improved scale custom angles management
Added cCustomScaleMinAngle and cCustomScaleMaxAngle variables
Added NeedleON property shows or hides the needle

Version 1.4
Amended NeedleBitmapFileName designation in custom properties
Amended NeedleBitmapFileName set in the code for a Gaige added in the Designer
Amended custom angles problems.
Added RemoveView and ReInitialize methods

EDIT: 2018.12.20 Version 1.3
Amended problem reported in post#11.

EDIT: 2018.12.14 Version 1.2
Amended problem with GaugeTitle and GaugeUnit not updated in code.



xGauges

Author: Klaus CHRISTL
Version: 1.5

• xGauges
  • Functions:
    • AddToParent (Parent As Object, Left As Int, Top As Int, Width As Int) As String
      adds the xGauge to the Parent view.
      the parent object can be a B4XView or
      an Activity or a Panel in B4A, a Panel in B4i or a Pane in B4J
      there is no Height property, because the Height = Width
    • Initialize (Callback As Object, EventName As String) As String
      Initializes a xGauge
      Callback is the calling module
      EventNam3 is the generic event name, not used
    • IsInitialized As Boolean
      Tests whether the object has been initialized.
  • Properties:
    • BackgroundColor As Int
      sets or gets the BackgroundColor
      it must be an xui.Color
      Example: xGauge1.BackgroundColor = xui.Color_White
    • CustomScaleEndAngle As Int
      sets or gets the CustomScaleEndAngle
      Start angle for Custom scale angle gazge type.
      trigonometric angles 0 at 3 o'clock
      positive counter clockwise
    • CustomScaleStartAngle As Int
      sets or gets the CustomScaleStartAngle
      Start angle for Custom scale angle gazge type.
      trigonometric angles 0 at 3 o'clock
      positive counter clockwise
    • GaugeTitle As String
      sets or gets GaugeTitle property
    • GaugeType As String
      sets or gets GaugeType property
      possible values 90° Top, 180°, 270°, 90° Left, Custom scale angles
      for Custom scale angles you can set the start and the end angle
    • GaugeUnit As String
      sets or gets GaugeUnit property
    • HalfTicks As Boolean
      gets or sets if half (intermedaite) tick are required
      one tick between two main ticks
    • Left As Double
      sets or gets the Left property
    • MainTickNumber As Int
      gets or sets the number of main ticks
      for a scale from 0 to 10 then number must be 11
    • NeedleBitmapFileName As String
      sets or gets the NeedleBitmapFileName
      enter 'no file' without the quotes to use the default needle
    • NeedleColor As Int
      sets or gets the NeedleColor
      it must be an xui.Color
      Example: xGauge1.NeedleColor = xui.Color_Gray
    • NeedleON As Boolean
      sets or gets the NeedleON property
      shows or hides the needle
      default value True
    • ScaleColor As Int
      sets or gets the ScaleColor
      it must be an xui.Color
      Example: xGauge1.ScaleColor = xui.Color_Black
    • ScaleHighLimitColor As Int
      sets or gets the ScaleHighLimitColor
      it must be an xui.Color
      Example: xGauge1.ScaleHighLimitColor = xui.Color_Red
    • ScaleHighLimitPerCent As Double
      sets or gets the ScaleHighLimitPerCent property
      it is drawn from the given percent to the scale end
      given in pecent of the scale
    • ScaleLowLimitColor As Int
      sets or gets the ScaleLowLimitColor
      it must be an xui.Color
      Example: xGauge1.NeedleColor = xui.Color_RGB(526, 165, 0)
    • ScaleLowLimitPerCent As Double
      sets or gets the ScaleLowLimitPerCent property
      given in pecent of the scale
      it drawn from the scale start to the given percent
    • ScaleMidLimitColor As Int
      sets or gets the ScaleMidLimitColor
      it must be an xui.Color
      Example: xGauge1.ScaleMidLimitColor = xui.Color_RGB(526, 165, 0)
    • ScaleMidLimitStartPerCent As Double
      sets or gets the ScaleMidLimitStartPerCent property
      it is drawn from the given start percent over the sweep percent
      given in pecent of the scale
    • ScaleMidLimitSweepPerCent As Double
      sets or gets the ScaleMidLimitSweepPerCent property
      it is drawn from the given start percent over the sweep percent
      given in pecent of the scale
    • SmallTicksNumber As Int
      gets or sets the SmallTickNumber property
      SmallTicksNumber small ticks will drawn between two main ticks
      for a decimal scale SmallTickNumber = 10, eventhough only 9 ticks are seen, the 10th is hidden by the main tick
    • TickText As String
      gets or sets the texts for the ticks
      the values between two || are displayed equally spaced on the scale
      Example: 0|20|40|60|80|100 or E|1/2|F
    • Top As Double
      sets or gets the Top property
    • Value
      sets the value of the gauge
      the value must be between ValueMin and ValueMax
    • ValueMax As Int
      gets or sets the max value of the gauge
    • ValueMin As Int
      gets or sets the min value of the gauge
    • Width As Double
      sets or gets the width of the gauge
      there is no height property because the height is equal to the width

 

Thanks Klaus !!!!

 

excellent work Klaus. Thank for you sharing.

It's possible change the label in the center of display? for example, it's possibile change Speed and miles widht other text?

regards

 

Thank you @klaus , it's seems that in the B4A project missed something like xFuelGauge.bas

 

In the b4a project
I copied the file xGauges.bas from b4j to the b4a folder and I added to the project.
I changed

Code:

Private xFuelGauge1 As xFuelGauge

to

Code:

Private xFuelGauge1 As xGauges

 

You have the properties GaugeTitle and GaugUnit, you can change their value in the Designer.

Sorry, I uploaded an older version.
Uploaded the new one in post#1.

 

excellent work Klaus

 

Great! That's exactly what I need now. Thank you so much, Klaus!

 

The xGauge Class has been updatet to version 1.2.

 

Hi Klaus,

Please check the second gauge (using B4A)

Thanks
iCAB

 

In the Designer, replace 225 by -225 for the CustomScaleStartAngle property.



I will check that the start angle is smaller than the end angle in the next update.

 

The xGauge Class has been updatet to version 1.3.
Amended problem reported in post#11.

 

Thanks Klaus for your continuous support!

Works great

 

Again, again.. great works..
Thanks for sharing @klaus

 

Thanks Klaus !!!!

 

The xGauge Class (version 1.3) is now also available as a B4X library.
The xGauges.b4xlib and the xGauges.xml files have been added in the first post.

 

I have copied both files to the AdditionlLibraries and get this error

File .jar is missing for xgauges.xml

 

do not copy the xml to the libs folder. It is only needed to generate an Docu from the xml. For ex with this tool.

 

0K @DonManfred
Fixed
Thx!!