```
Sub Globals
'These global variables will be redeclared each time the activity is created.
'These variables can only be accessed from this module.
Dim mainColor As Int '0xFFE0E5EC
Dim lightColor As Int '0xFFFFFFFF
Dim darkColor As Int '0xFFA3B1C6
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("Layout1")
GenerateNewThemeColors
DrawEverything
End Sub
Sub DrawEverything
Activity.RemoveAllViews
Activity.Color = mainColor
Dim P As Label = createLabel("Warmer")
Dim WW As Int = Activity.Width/2
Dim HH As Int = WW/2
Activity.AddView(P, (Activity.Width-WW)/2, Activity.Height/4-HH/2, WW, HH)
GenerateViewShadow(P, WW/6, 0.2)
Dim P2 As Label = createLabel("NEW")
Dim WW As Int = Activity.Width/2
Dim HH As Int = WW
Activity.AddView(P2, (Activity.Width-WW)/2, 2*Activity.Height/4-HH/2, WW, HH)
GenerateViewShadowWithPath(P2, 0.2)
Dim P3 As Label = createLabel("Year!!")
Dim WW As Int = Activity.Width/3
Dim HH As Int = WW/2
Activity.AddView(P3, (Activity.Width-WW)/2, 3*Activity.Height/4-HH/2, WW, HH)
GenerateViewShadow(P3, P.Width/12, 0.2)
End Sub
Sub createLabel(myText As String) As Label
Dim l As Label
l.Initialize("")
l.Gravity = Gravity.CENTER
l.TextColor = Colors.White
l.TextSize = 20
l.Text = myText
Return l
End Sub
Sub GenerateViewShadow( P As B4XView, cornerRadius As Int, insetPercentage As Float)
Dim CVX As B4XCanvas
Dim BigWW As Int = P.Width
Dim BigHH As Int = P.Height
' inset percentage will be according to the smallest dim, but will be the same for both direction
Dim absInset As Float = insetPercentage*Min(BigWW, BigHH)
Dim SmallWW As Int = BigWW - absInset
Dim SmallHH As Int = BigHH - absInset
CVX.Initialize(P)
Dim PX As B4XPath
Dim R0 As B4XRect
Dim dW As Int = (BigWW-SmallWW)/2
Dim dH As Int = (BigHH-SmallHH)/2
Dim d As Int = Max(dW, dH)
' UPPER (light) shadow
For k = 0 To d
Dim kW As Float = k*dW/d
Dim kH As Float = k*dH/d
R0.Initialize( kW , kH, SmallWW+dW-kW, SmallHH+dH-kH)
PX.InitializeRoundedRect(R0, cornerRadius)
Dim pColor As Int = FindSolidColorBetween(mainColor, lightColor, 1.0*k*k*k/(d*d*d))
CVX.DrawPath(PX, pColor, True, 0)
Next
' LOWER (dark) shadow
For k = 0 To d
Dim kW As Float = k*dW/d
Dim kH As Float = k*dH/d
R0.Initialize( 2*dW-kW , 2*dH-kH, 2*dW+SmallWW-kW, 2*dH+SmallHH-kH)
PX.InitializeRoundedRect(R0, cornerRadius)
Dim pColor As Int = FindSolidColorBetween(mainColor, darkColor, 1.0*k*k*k/(d*d*d))
CVX.DrawPath(PX, pColor, True, 0)
Next
' Draw the 'plain' area with the main color.
R0.Initialize( dW , dH, dW+SmallWW, dH+SmallHH)
PX.InitializeRoundedRect(R0, cornerRadius)
CVX.DrawPath(PX, mainColor, True, 0)
End Sub
Sub GenerateViewShadowWithPath( P As B4XView, insetPercentage As Float)
Dim CVX As B4XCanvas
Dim BigWW As Int = P.Width
Dim BigHH As Int = P.Height
' inset percentage will be according to the smallest dim, but will be the same for both direction
Dim absInset As Float = insetPercentage*Min(BigWW, BigHH)
Dim SmallWW As Int = BigWW - absInset
Dim SmallHH As Int = BigHH - absInset
' Let's build an hexagonal (closed) Path
Dim PathPoints(7,2) As Float
For k=0 To 6
PathPoints(k,0) = SmallWW/2*(1+CosD(60*k))
PathPoints(k,1) = SmallHH/2*(1+SinD(60*k))
Next
CVX.Initialize(P)
Dim PX As B4XPath
Dim dW As Int = (BigWW-SmallWW)/2
Dim dH As Int = (BigHH-SmallHH)/2
Dim d As Int = Max(dW, dH)
' UPPER (light) shadow
For k = 0 To d
Dim kW As Float = k*dW/d
Dim kH As Float = k*dH/d
PX.Initialize(PathPoints(0,0)+kW, PathPoints(0,1)+kH)
For c=1 To 6
PX.LineTo(PathPoints(c,0)+kW, PathPoints(c,1)+kH)
Next
Dim pColor As Int = FindSolidColorBetween(mainColor, lightColor, 1.0*k*k*k/(d*d*d))
CVX.DrawPath(PX, pColor, True, 0)
Next
' LOWER (dark) shadow
For k = 0 To d
Dim kW As Float = k*dW/d
Dim kH As Float = k*dH/d
PX.Initialize(PathPoints(0,0)+2*dW-kW, PathPoints(0,1)+2*dH-kH)
For c=1 To 6
PX.LineTo(PathPoints(c,0)+2*dW-kW, PathPoints(c,1)+2*dH-kH)
Next
Dim pColor As Int = FindSolidColorBetween(mainColor, darkColor, 1.0*k*k*k/(d*d*d))
CVX.DrawPath(PX, pColor, True, 0)
Next
' Draw the 'plain' area with the main color.
PX.Initialize(PathPoints(0,0)+dW, PathPoints(0,1)+dH)
For k=0 To 6
PX.LineTo(PathPoints(k,0)+dW, PathPoints(k,1)+dH)
Next
CVX.DrawPath(PX, mainColor, True, 0)
End Sub
' progress=0 --> we get colorA
' progress=1 -> we get colorB
Sub FindSolidColorBetween(colorA As Int, colorB As Int, progress As Float) As Int
Dim weight As Int = 256*(1-Max(0, Min(progress, 1)))
Log("val:"&weight)
Dim finalRed As Int = Bit.ShiftRight(weight*Bit.And(Bit.ShiftRight(colorA,16),0xFF) + (256-weight)*Bit.And(Bit.ShiftRight(colorB,16),0xFF),8)
Dim finalGreen As Int = Bit.ShiftRight(weight*Bit.And(Bit.ShiftRight(colorA, 8),0xFF) + (256-weight)*Bit.And(Bit.ShiftRight(colorB, 8),0xFF),8)
Dim finalBlue As Int = Bit.ShiftRight(weight*Bit.And(Bit.ShiftRight(colorA, 0),0xFF) + (256-weight)*Bit.And(Bit.ShiftRight(colorB, 0),0xFF),8)
Return Colors.RGB(finalRed, finalGreen, finalBlue)
End Sub
Sub Activity_Click
GenerateNewThemeColors
DrawEverything
End Sub
Sub GenerateNewThemeColors
mainColor = Colors.RGB( 160 + Rnd(0,80), 160+Rnd(0,80), 160+Rnd(0,80))
darkColor = FindLighterOrDarkerColor(mainColor, 0.85)
lightColor = FindLighterOrDarkerColor(mainColor, 1.15)
End Sub
' Factor = 0.9 will be slightly darker Factor=1.1 will be lighter
Sub FindLighterOrDarkerColor(myColor As Int, factor As Float) As Int
Dim finalRed As Int = Min(0xFF, factor*Bit.And(0xFF, Bit.ShiftRight(myColor, 16)))
Dim finalGreen As Int = Min(0xFF, factor*Bit.And(0xFF, Bit.ShiftRight(myColor, 8)))
Dim finalBlue As Int = Min(0xFF, factor*Bit.And(0xFF, Bit.ShiftRight(myColor, 0)))
Return Colors.RGB(finalRed, finalGreen, finalBlue)
End Sub
```