PureBasic Forums - English

Posted: **Wed Feb 11, 2015 1:30 am**

I would like to have a 'page turn' effect in my app -each 'page' will be a single window with image and text gadgets loaded when the page is 'turned'. If you have ever used Lotus Organizer, you will know what I mean.

Here is a similar sort of thing on line: library_events

Posted: **Wed Feb 11, 2015 7:24 pm**

Not sure, how perfect you want to simulate the paper turning, but a quick approach could be something like this...

Code: Select all

#X=400
#Y=600

Procedure.s RandomLine()

	Protected s.s
	Protected i,c

	c='A'
	For i=1 To 40
		s=s+Chr(c+Random(25))
		If c<'a'
			c='a'
		ElseIf Random(10)=0
			Select Random(10)
			Case 0
				s+". "
				c='A'
			Case 1
				s+" "
				c='A'
			Default
				s+" "
			EndSelect
		EndIf
	Next i

	ProcedureReturn s

EndProcedure
Procedure Page(p)

	Protected i,j
	Protected x

	#Z=10

	For i=1 To #Z
		x=MulDiv_(#X,i,#Z)
		StartDrawing(CanvasOutput(0))
		DrawImage(ImageID(p+3),#X,0)
		DrawImage(ImageID(p+1),#X,0,#X-x,#Y)
		StopDrawing()
		Delay(20)
	Next i
	For i=1 To #Z
		x=MulDiv_(#X,i,#Z)
		StartDrawing(CanvasOutput(0))
		DrawImage(ImageID(p),0,0)
		DrawImage(ImageID(p+2),#X-x,0,x,#Y)
		StopDrawing()
		Delay(20)
	Next i

EndProcedure
Procedure Init()

	Protected i,j,x,m,n,c
	Protected s.s

	OpenWindow(0,0,0,#X+#X,#Y,"")
	CanvasGadget(0,0,0,#X+#X,#Y)

	For i=1 To 20
		CreateImage(i,#X,#Y)
		StartDrawing(ImageOutput(i))
		Box(0,0,#X,#Y,#White)
		
		If i&1
			m=#X
			n=-1
		Else
			m=0
			n=1
		EndIf
		
		For j=0 To 15
			c=$10101*j*8+$808080
			LineXY(m,0,m,#Y,c)
			m+n
		Next j
		
		For j=1 To 28
			DrawText(24,20*j,RandomLine(),#Black,#White)
		Next j

		s=Str(i)
		If i&1
			x=10
		Else
			x=#X-10-TextWidth(s)
		EndIf
		DrawText(x,#Y-20,Str(i),#Red,#White)
		StopDrawing()
	Next i

	StartDrawing(CanvasOutput(0))
	DrawImage(ImageID(1),0,0)
	DrawImage(ImageID(2),#X,0)
	StopDrawing()

EndProcedure

Procedure Main()

	Init()

	p=1

	Repeat
		Select WaitWindowEvent()
		Case #WM_CHAR
			Page(p)
			If p<17
				p+2
			Else
				p=1
			EndIf
		Case #PB_Event_CloseWindow
			End
		EndSelect
	ForEver
EndProcedure

Main()

Posted: **Wed Feb 11, 2015 11:04 pm**

Michael Vogel wrote:Not sure, how perfect you want to simulate the paper turning, but a quick approach could be something like this...

I rarely have the need to barge in to a thread like this, but this is absolutely brilliant!

Posted: **Thu Feb 12, 2015 3:14 am**

Wow! That is just excellent, thank you Michael.

Posted: **Thu Feb 12, 2015 3:08 pm**

Very cool code Michael Vogel.

But on Windows® only.

Posted: **Thu Feb 12, 2015 3:58 pm**

heartbone wrote:But on Windows® only.

Just substitute this:

Code: Select all

x=(#X*i)/#Z

for this:

Code: Select all

x=MulDiv_(#X,i,#Z)

and no more Windows only!

Brilliant code, by the way!

Regards,
Eric

Posted: **Thu Feb 12, 2015 4:01 pm**

ebs, I'm sure that is true after those annoying color constants are defined or replaced.

No.. not quite, I'll still need to figure out the Wal-Mart character. #WM_CHAR

Posted: **Thu Feb 12, 2015 4:23 pm**

the Wal-Mart character. #WM_CHAR

So that's what it is!

Posted: **Thu Feb 12, 2015 5:01 pm**

heartbone wrote:No.. not quite, I'll still need to figure out the Wal-Mart character. #WM_CHAR

It just catches a keypress to turn the page. You can use a keyboard shortcut instead:

Code: Select all

Procedure Main()
  
  Init()
  
  p=1

  AddKeyboardShortcut(0, #PB_Shortcut_Space, 1)

  Repeat
    Select WaitWindowEvent()
      Case #PB_Event_Menu
        If EventMenu() = 1
          Page(p)
          If p<17
            p+2
          Else
            p=1
          EndIf
        EndIf
      Case #PB_Event_CloseWindow
        End
    EndSelect
  ForEver
EndProcedure

Posted: **Thu Feb 12, 2015 5:49 pm**

Hi IdeasVacuum,

Comic Book version based on Michael Vogel's page-turning effect:
- Comic Book / Magnifying Glass

Cheers!

Posted: **Thu Feb 12, 2015 6:37 pm**

That is a thing of beauty JHPJHP

Posted: **Thu Feb 12, 2015 6:38 pm**

Nice one, Michael, thanks for sharing!
Also thanks to JHPJHP, nice example!

Posted: **Thu Feb 12, 2015 7:46 pm**

@Michael Vogel

Brilliant!
Thank you for sharing.

Posted: **Thu Feb 12, 2015 8:54 pm**

Thank you IdeasVacuum, Karellen,

Applied a small update after noticing a slight flicker.
- page turning now initiated by mouse click
- should now be cross-platform

NB*: Update also includes various other improvements.

Cheers!

Posted: **Thu Feb 12, 2015 9:36 pm**

Very Nice

On Mac no effects without EventWindow...

Code: Select all

Procedure Page(p)

   Protected i,j
   Protected x

   #Z=10

   For i=1 To #Z
      x=MulDiv_(#X,i,#Z)
      StartDrawing(CanvasOutput(0))
      DrawImage(ImageID(p+3),#X,0)
      DrawImage(ImageID(p+1),#X,0,#X-x,#Y)
      StopDrawing()
      Delay(10)
      While WindowEvent() : Wend
   Next i
   For i=1 To #Z
      x=MulDiv_(#X,i,#Z)
      StartDrawing(CanvasOutput(0))
      DrawImage(ImageID(p),0,0)
      DrawImage(ImageID(p+2),#X-x,0,x,#Y)
      StopDrawing()
      Delay(10)
      While WindowEvent() : Wend
   Next i

EndProcedure

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