| Author | Topic: XbpBitmap():draw() |
|---|
 | Carlos A Beling | XbpBitmap():draw()
on Thu, 18 Oct 2018 17:21:35 -0300Good evening.
I am trying XbpBitmap():draw() shows its image as disabled (parameter
<nState> = XBP_STATE_DISABLED) and I could not making it works.
How can I accomplish this?
Fraternally
Beling |
| Jim Lee | Re: XbpBitmap():draw()
on Thu, 18 Oct 2018 23:58:13 +0200hi,
> I am trying XbpBitmap():draw() shows its image as disabled (parameter
> <nState> = XBP_STATE_DISABLED) and I could not making it works.
> How can I accomplish this?
you can disable a XbPart but not a Image ...
you can try to convert Image to Grey-Scale using Gnter Beyes Solution
IF oImage <> NIL Ausgabe nur, wenn Bitmap angegeben
IF BAnd(aInfo[3], XBP_DRAWSTATE_DISABLED) == XBP_DRAWSTATE_DISABLED
oImage := BMPGreyScale(::image, .T.) Graustufenbild
ENDIF
oImage:draw(oPS, ::imageRect) Bild malen im vorgegebenen
Grenbereich
ENDIF
 GREY_BMP.ZIP |
| Carlos A Beling | Re: XbpBitmap():draw()
on Fri, 19 Oct 2018 12:26:18 -0300Hi Jim:
good afternoon.
Many thanks.
The same image may to be rendered enabled or disabled each time it will
be used.
Then, if I use this approach, I will need changing the image according
to each state (enable or disable) before rendering it.
I am thinking to use XbpBitmap:transparentClr for "simulate" the image's
state.
Fraternally
Beling
Em 18/10/2018 18:58, Jim Lee escreveu:
> hi,
>
>> I am trying XbpBitmap():draw() shows its image as disabled (parameter
>> <nState> = XBP_STATE_DISABLED) and I could not making it works.
>> How can I accomplish this?
>
> you can disable a XbPart but not a Image ...
>
> you can try to convert Image to Grey-Scale using Günter Beyes Solution
>
> IF oImage <> NIL Ausgabe nur, wenn Bitmap angegeben
> IF BAnd(aInfo[3], XBP_DRAWSTATE_DISABLED) == XBP_DRAWSTATE_DISABLED
> oImage := BMPGreyScale(::image, .T.) Graustufenbild
> ENDIF
> oImage:draw(oPS, ::imageRect) Bild malen im vorgegebenen
> Größenbereich
> ENDIF
>
>
> |
| Jose Antonio Diego Kereje | Re: XbpBitmap():draw()
on Fri, 19 Oct 2018 17:46:56 +0200Hi,
> Then, if I use this approach, I will need changing
> the image according to each state (enable or disable)
> before rendering it.
No, you can use this approach:
********************************
CLASS MyXbpBitmap FROM XbpBitmap
********************************
PROTECTED:
VAR oDisabledBmp
EXPORTED:
INLINE METHOD destroy
*********************
::XbpBitmap:destroy()
IF ::oDisabledBmp # nil ; ::oDisabledBmp:destroy() ; ::oDisabledBmp:=
nil ; ENDIF
RETURN self
INLINE METHOD Draw( oPS, aTargetRect, aSourceRect, nRasterOP, nCompress,
nState )
*********************************************************************************
IF nState = XBP_STATE_DISABLED
IF ::oDisabledBmp = nil
::oDisabledBmp:= BMPGreyScale( self, .T. )
ENDIF
RETURN ::oDisabledBmp:draw( oPS, aTargetRect, aSourceRect,
nRasterOP, nCompress, XBP_STATE_NORMAL )
ENDIF
RETURN ::XbpBitmap:draw( oPS, aTargetRect, aSourceRect, nRasterOP,
nCompress, XBP_STATE_NORMAL )
ENDCLASS
Regards. Diego |
| Carlos A Beling | Re: XbpBitmap():draw()
on Fri, 19 Oct 2018 15:47:18 -0300Hello Diego.
Many thanks
Very, very good.
May be I make a subclass of XbpBitmap() with an iVar ::oBitmapDisable
and, in the method ::draw(..., nState) I make:
if <nState> == XBP_STATE_DISABLE; ::oBitmapDisable:draw(...)
else; ::XbpBitmap:Draw(...)
endif
Fraternally
Beling
Em 19/10/2018 12:46, Jose Antonio Diego Kereje escreveu:
> Hi,
>
>> Then, if I use this approach, I will need changing
>> the image according to each state (enable or disable)
>> before rendering it.
>
> No, you can use this approach:
>
> ********************************
> CLASS MyXbpBitmap FROM XbpBitmap
> ********************************
> PROTECTED:
> VAR oDisabledBmp
>
> EXPORTED:
> INLINE METHOD destroy
> *********************
> ::XbpBitmap:destroy()
> IF ::oDisabledBmp # nil ; ::oDisabledBmp:destroy() ;
> ::oDisabledBmp:= nil ; ENDIF
> RETURN self
>
> INLINE METHOD Draw( oPS, aTargetRect, aSourceRect, nRasterOP,
> nCompress, nState )
>
> *********************************************************************************
>
> IF nState = XBP_STATE_DISABLED
> IF ::oDisabledBmp = nil
> ::oDisabledBmp:= BMPGreyScale( self, .T. )
> ENDIF
> RETURN ::oDisabledBmp:draw( oPS, aTargetRect, aSourceRect,
> nRasterOP, nCompress, XBP_STATE_NORMAL )
> ENDIF
> RETURN ::XbpBitmap:draw( oPS, aTargetRect, aSourceRect, nRasterOP,
> nCompress, XBP_STATE_NORMAL )
> ENDCLASS
>
> Regards. Diego |
