Viewport

[BackupUser]

Restored from previous forum. Originally posted by BigSnake.

It would be nice if you could set a Viewport and all drawing commands will work only within the borders of this viewport.
I´ve the problem, that i must cut a text at the edge of a box,

[BackupUser]

Restored from previous forum. Originally posted by WolfgangS.

Hi !
you can create an Image with CreateImage(#Image, Breite, Höhe). Then plot your stuff into the Image and plot the image into your screen.

MFG
WolfgangS

[BackupUser]

Restored from previous forum. Originally posted by tinman.

Here is something that might be useful until PB gets its own command for clipping graphic areas.

Code: Select all

If OpenWindow(0, 0, 0, 400, 300, #PB_Window_SystemMenu|#PB_Window_MinimizeGadget|#PB_Window_MaximizeGadget|#PB_Window_SizeGadget|#PB_Window_TitleBar, "foo")

    Repeat
        ev.l = WaitWindowEvent()
        Select ev
            Case #PB_Event_Repaint
                hdc.l = StartDrawing(WindowOutput())
                rgn.l = CreateRectRgn_(50, 50, 101, 101)        ; Try to create cliiping rectangle
                If rgn                                          ; Make sure it was successful
                    SelectClipRgn_(hdc, rgn)                    ; Install it into the device context
                    Box(0, 0, 200, 200, RGB(255, 0, 0))         ; Draw something to prove it clips
                    SelectClipRgn_(hdc, 0)                      ; Remove clipping
                    DeleteObject_(rgn)                          ; And free the region we created
                EndIf
                StopDrawing()

        EndSelect
    Until ev=#PB_Event_CloseWindow
EndIf
End

PS, this is not perfect. For example, it does not check to see if PB has already installed a clipping area before freeing it (ideally it would go back to the one PB installs). However, I couldn't figure out how to do it.



--
It's not minimalist - I'm increasing efficiency by reducing input effort.
(Win98first ed. + SP1, PB3.40)