I downloaded the Booklets and compiled Booklets > XUI > XUISourceCode > SimpleDrawMethods
When I run it in B4A 9.90 I get an error right away in main_drawlayer2 sub.
Here is the log with a description as it starts to execute each block of code. It failed in "draw and arc path".
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
draw background color
draw the four lines on layer(2)
draw the three horizontal texts
draw the three rotated texts
draw an empty circle
draw a clipped arc
draw a clipped triangle
draw an arc Path
main_drawlayer2 (java line: 678)
java.lang.IllegalStateException: Underflow in restore - more restores than saves
at android.graphics.Canvas.restore(Canvas.java:679)
at anywheresoftware.b4a.objects.drawable.CanvasWrapper.RemoveClip(CanvasWrapper.java:485)
at anywheresoftware.b4a.objects.B4XCanvas.RemoveClip(B4XCanvas.java:95)
at B4A.xSimpleDrawFunctions.main._drawlayer2(main.java:678)
at B4A.xSimpleDrawFunctions.main._drawing(main.java:459)
at B4A.xSimpleDrawFunctions.main._activity_resume(main.java:428)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:213)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:193)
at B4A.xSimpleDrawFunctions.main.afterFirstLayout(main.java:111)
at B4A.xSimpleDrawFunctions.main.access$000(main.java:17)
at B4A.xSimpleDrawFunctions.main$WaitForLayout.run(main.java:83)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
java.lang.IllegalStateException: Underflow in restore - more restores than saves
No idea why it's doing this. I also compiled the B4J version (B4J v8.31) and it displays a rose image in the background (see attached image) and nothing in the foreground except for 3 buttons at the bottom. Clicking on the buttons does not do anything apart from changing the color and text of the buttons. I would have thought clicking on the images would display different layers of images.
TIA
When I run it in B4A 9.90 I get an error right away in main_drawlayer2 sub.
B4X:
Private Sub DrawLayer2
'draw background color
Log("draw background color")
cvsLayer(2).DrawRect(xbckRect, xui.Color_ARGB(255, 240, 240, 240), True, 1dip)
Log("draw the four lines on layer(2)")
' draw the four lines on layer(2)
x1 = 10dip
y1 = 10dip
x2 = 150dip
y2 = 40dip
cvsLayer(2).DrawLine(x1, y1, x2, y2, xui.Color_Red, 1dip)
y1 = 50dip
y2 = 50dip
cvsLayer(2).DrawLine(x1, y1, x2, y2, xui.Color_Green, 3dip)
y1 = 60dip
y2 = 90dip
cvsLayer(2).DrawLine(x1, y1, x2, y2, xui.Color_Yellow, 5dip)
y1 = 80dip
y2 = 110dip
cvsLayer(2).DrawLine(x1, y1, x2, y2, xui.Color_RGB(0, 128, 255), 8dip)
Log("draw the three horizontal texts")
' draw the three horizontal texts
x1 = 220dip
y1 = 40dip
cvsLayer(2).DrawText("Rose", x1, y1, xFont, xui.Color_Blue, "LEFT")
DrawCross(x1, y1, xui.Color_Red)
y1 = 70dip
cvsLayer(2).DrawText("Rose", x1, y1, xFont, xui.Color_Blue, "CENTER")
DrawCross(x1, y1, xui.Color_Red)
y1 = 100dip
cvsLayer(2).DrawText("Rose", x1, y1, xFont, xui.Color_Blue, "RIGHT")
DrawCross(x1, y1, xui.Color_Red)
Log("draw the three rotated texts")
' draw the three rotated texts
x1 = 300dip
y1 = 40dip
cvsLayer(2).DrawTextRotated("Rose", x1, y1, xFont, xui.Color_Blue, "LEFT", -30)
DrawCross(x1, y1, xui.Color_Red)
y1 = 70dip
cvsLayer(2).DrawTextRotated("Rose", x1, y1, xFont, xui.Color_Blue, "CENTER", -30)
DrawCross(x1, y1, xui.Color_Red)
y1 = 100dip
cvsLayer(2).DrawTextRotated("Rose", x1, y1, xFont, xui.Color_Blue, "RIGHT", -30)
DrawCross(x1, y1, xui.Color_Red)
Log("draw an empty circle")
'draw an empty circle
xc = 100dip
yc = 180dip
Radius = 50dip
cvsLayer(2).DrawCircle(xc, yc, Radius, xui.Color_Red, False, 5dip)
Log("draw a clipped arc")
'draw a clipped arc
Private mPath As B4XPath
xc = 10dip
yc = 320dip
Radius = 80dip
mPath.InitializeArc(xc, yc, Radius, -30, 60)
cvsLayer(2).ClipPath(mPath)
cvsLayer(2).DrawRect(cvsLayer(2).TargetRect, xui.Color_Magenta, True, 1dip)
cvsLayer(2).RemoveClip
Log("draw a clipped triangle")
'draw a clipped triangle
mPath.Initialize(100dip, 280dip)
mPath.LineTo(180dip, 280dip)
mPath.LineTo(140dip, 360dip)
cvsLayer(2).ClipPath(mPath)
cvsLayer(2).DrawRect(cvsLayer(2).TargetRect, xui.Color_Blue, True, 1dip)
cvsLayer(2).RemoveClip
Log("draw an arc Path")
'draw an arc Path
Private mPath As B4XPath
xc = 10dip
yc = 420dip
Radius = 80dip
mPath.InitializeArc(xc, yc, Radius, -30, 60)
cvsLayer(2).DrawPath(mPath, xui.Color_Green, True, 1dip)
cvsLayer(2).RemoveClip
Log("draw a triangle path")
'draw a triangle path
Private mPath As B4XPath
mPath.Initialize(90dip, 380dip)
mPath.LineTo(170dip, 380dip)
mPath.LineTo(130dip, 460dip)
cvsLayer(2).DrawPath(mPath, xui.Color_Green, True, 1dip)
cvsLayer(2).RemoveClip
Log("draw a rotated triangle path with the center")
'draw a rotated triangle path with the center
Private mPath As B4XPath
mPath.Initialize(180dip, 380dip)
mPath.LineTo(260dip, 380dip)
mPath.LineTo(220dip, 460dip)
cvsLayer(2).DrawPathRotated(mPath, xui.Color_Green, True, 1dip, 15, 180dip, 380dip)
cvsLayer(2).RemoveClip
DrawCross(180dip, 380dip, xui.Color_Red)
Log("draw a rotated triangle path with the center")
'draw a rotated triangle path with the center
Private mPath As B4XPath
mPath.Initialize(260dip, 380dip)
mPath.LineTo(340dip, 380dip)
mPath.LineTo(300dip, 460dip)
cvsLayer(2).DrawPathRotated(mPath, xui.Color_Green, True, 1dip, 15, 300dip, 405dip)
cvsLayer(2).RemoveClip
DrawCross(300dip, 405dip, xui.Color_Red)
cvsLayer(2).Invalidate
Log("saves the bitmap of layer(2)")
'saves the bitmap of layer(2)
Dim Out As OutputStream
xui.SetDataFolder("SimpleDrawMethods")
Out = File.OpenOutput(xui.DefaultFolder, "Test.png", False)
cvsLayer(2).CreateBitmap.WriteToStream(Out, 100, "PNG")
Out.Close
cvsLayer(2).Release
End SubHere is the log with a description as it starts to execute each block of code. It failed in "draw and arc path".
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
draw background color
draw the four lines on layer(2)
draw the three horizontal texts
draw the three rotated texts
draw an empty circle
draw a clipped arc
draw a clipped triangle
draw an arc Path
main_drawlayer2 (java line: 678)
java.lang.IllegalStateException: Underflow in restore - more restores than saves
at android.graphics.Canvas.restore(Canvas.java:679)
at anywheresoftware.b4a.objects.drawable.CanvasWrapper.RemoveClip(CanvasWrapper.java:485)
at anywheresoftware.b4a.objects.B4XCanvas.RemoveClip(B4XCanvas.java:95)
at B4A.xSimpleDrawFunctions.main._drawlayer2(main.java:678)
at B4A.xSimpleDrawFunctions.main._drawing(main.java:459)
at B4A.xSimpleDrawFunctions.main._activity_resume(main.java:428)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:213)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:193)
at B4A.xSimpleDrawFunctions.main.afterFirstLayout(main.java:111)
at B4A.xSimpleDrawFunctions.main.access$000(main.java:17)
at B4A.xSimpleDrawFunctions.main$WaitForLayout.run(main.java:83)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
java.lang.IllegalStateException: Underflow in restore - more restores than saves
No idea why it's doing this. I also compiled the B4J version (B4J v8.31) and it displays a rose image in the background (see attached image) and nothing in the foreground except for 3 buttons at the bottom. Clicking on the buttons does not do anything apart from changing the color and text of the buttons. I would have thought clicking on the images would display different layers of images.
TIA