B4J Question Canvas DrawText - how to apply alignment?

Jim Brown · Jul 7, 2014

I can't seem to get this to work:

B4J code

B4X:

mycanvas.DrawText("hello",10,10,fx.DefaultFont,fx.Colors.Blue,"LEFT")

The error message is "too many parameters"
If I remove the "LEFT" I get "missing parameter"

How do you apply the alignment parameter?

The docs say:

DrawText (Text As String, x As Double, y As Double, Font As javafx.scene.text.Font, Paint As javafx.scene.paint.Paint, Alignment As javafx.scene.text.TextAlignment)
Draws the text.
Text - The text that will be drawn.
x - The origin X coordinate.
y - The origin Y coordinate.
Font - The text font.
Paint - Drawing color.
TextAlignment - Sets the alignment relative to the origin. One of the following values: LEFT, CENTER, RIGHT.

stevel05 · Jul 7, 2014

You need to add the font size to the fx.DefaultFont call: i.e. fx.DefaultFont(16)

tdocs2 · Aug 9, 2015

Thank you, Jim, for asking the question exactly as I would have.

Thank you, Steve - you are a treasure of knowledge.

TorontoJim · Apr 2, 2016

I'm also getting an error with the DrawText(). It's telling me "Left" is wrong. I've tried:
"Left"
"LEFT"
Left
LEFT

B4X:

Sub paneDayBuilderCanvas_Resize (Width As Double, Height As Double)
    Dim timeFont As Font
    timeFont = fx.CreateFont("Verdana,Tahoma,Arial", 32, True, False)
	canvasDayDesigner.ClearRect(0, 0, Width, Height)
	'Hours hash lines; Left is 85; Right is width - 35
	Dim dblCanvas0000 As Double = 85
	Dim dblCanvasX1Hr As Double
	dblCanvasX1Hr = ((Width - 120.00) / 24.00)
	canvasDayDesigner.DrawLine(dblCanvas0000, 20.00, dblCanvas0000, (Height - 50), fx.Colors.Gray, 2.00)
	For i = 1 To 24
		If i mod 6 = 0 Then
			canvasDayDesigner.DrawLine(dblCanvas0000 + (dblCanvasX1Hr * i), 20.00, dblCanvas0000 + (dblCanvasX1Hr * i), (Height - 50), fx.Colors.Gray, 2.00)
		Else
			canvasDayDesigner.DrawLine(dblCanvas0000 + (dblCanvasX1Hr * i), 20.00, dblCanvas0000 + (dblCanvasX1Hr * i), (Height - 50), fx.Colors.ARGB(100, 140, 140, 140), 1.00)
			canvasDayDesigner.DrawText(i, dblCanvas0000 + (dblCanvasX1Hr * i), Height - 25, timeFont, fx.Colors.Gray, "Left")
		End If
	Next
End Sub

This is the error I'm getting on the Draw Text:

B4X:

java.lang.IllegalArgumentException: No enum constant javafx.scene.text.TextAlignment.Left

Canvas is working great, lines are drawing no problem. It's just this that (so far) is buggering up for me.

TorontoJim · Apr 2, 2016

I just looked at this page:

http://grepcode.com/file/repo1.mave...ea-b96.1/javafx/scene/text/TextAlignment.java

LEFT, CENTER, RIGHT, JUSTIFY are all valid.

The Enum has to be passed as a string, so the quotes are necessary. It doesn't seem to be case sensitive, but I've tried both upper case and UCFirst.

Really stumped here. This time I don't think it's me (for a change) ... but I've been known to be wrong.

TorontoJim · Apr 2, 2016

I realized I should post this as a new thread. Doing so now.

B4J Question Canvas DrawText - how to apply alignment?

Jim Brown

Active Member

stevel05

Expert

tdocs2

Well-Known Member

TorontoJim

Active Member

TorontoJim

Active Member

TorontoJim

Active Member

Similar Threads

B4J Question Canvas DrawText - how to apply alignment?

Jim Brown

Active Member

stevel05

Expert

tdocs2

Well-Known Member

TorontoJim

Active Member

TorontoJim

Active Member

TorontoJim

Active Member

Similar Threads

Privacy & Transparency

Privacy & Transparency