Android Question Can I find the only empty distance in the picture

Omar Parra A. said:

for space use patern "\s{2,}" (2 or more spaces)

sample with text:

B4X:

    Dim Text As String = "Hello Hello Hello            Hello"
    Log(Text)
    Text = Regex.Replace("\s{2,}", Text, " [THIS WAS ADDED] ")
    Log(Text)

View attachment 126019

Click to expand...

BitmapCreator​

BitmapCreator Effects​

Erel said:

View attachment 126027

This will help you get started:

B4X:

Private Sub FindLargestGapAtTheCenter (bc As BitmapCreator) As B4XRect
    Dim y As Int = bc.mHeight / 2
    Dim MaxGapStart As Int
    Dim MaxGapEnd As Int
    Dim GapStart As Int
    Dim white As ARGBColor
    white = bc.ColorToARGB(xui.Color_White, white)
    Dim argb As ARGBColor
    Dim InsideAGap As Boolean
    For x = 0 To bc.mWidth - 1 Step 2 'step is an optimization factor
        bc.GetARGB(x, y, argb)
        If argb.r = white.r And argb.b = white.b And argb.g = white.g Then
            If InsideAGap = False Then
                GapStart = x
                InsideAGap = True
            End If
        Else
            If InsideAGap Then
                If x-1 - GapStart > MaxGapEnd - MaxGapStart Then
                    MaxGapEnd = x - 1
                    MaxGapStart = GapStart
                End If
                InsideAGap = False
            End If
        End If
    Next
    Dim r As B4XRect
    r.Initialize(MaxGapStart, y, MaxGapEnd, y)
    Return r
End Sub

B4J project is attached.

Click to expand...

Erel said:

You will be able to do it once you understand the code.

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