SHAPE & TRANSPARENT Clause using TsButton

[reinaldocrespo]

Hi,

When using the SHAPE clause with TsButton I get an annoying border when the dialog that contains the button has some kind of background color.

Antonio suggested to fix the tsbutton class using FWTransBmp() function and showed the code below as called from FW Tbitmap Class:

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            hBmpOld = SelectObject( ::hDC, ::hBitmap )
            nZeroZeroClr = GetPixel( ::hDC, 0, 0 )
            SelectObject( ::hDC, hBmpOld )
            nOldClr = SetBkColor( ::hDC, nRGB( 255, 255, 255 ) )
            TransBmp( ::hBitmap, ::nWidth(), ::nHeight(), nZeroZeroClr, ::hDC,;
                      ::nX, ::nY, Super:nWidth(), Super:nHeight() )
            SetBkColor( ::hDC, nOldClr )         


Here's an image of the annoying border I'm referring to:


Perhaps someone has already patch Tsbutton to work with transparencies and would like to share the code or show how?


Reinaldo.

[reinaldocrespo]

I get the same ill effect when using TbtnBmp class:



here is the code:

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   REDEFINE BTNBMP aoBtns[ 1 ] ID 170 OF oDlg RESOURCE "Save48" TOOLTIP "Save to Disk" NOBORDER ACTION SavePatient( odbf, oFld )
   REDEFINE BTNBMP aoBtns[ 2 ] ID 240 OF oDlg RESOURCE "Exit48" TOOLTIP "Exit" NOBORDER ACTION odlg:end()
   aoBtns[ 1 ]:ltransparent := .t.
   aoBtns[ 2 ]:ltransparent := .t.


Any ideas?

Reinaldo.

[Antonio Linares]

Reinaldo,

Make this change in Class TBtnBmp:

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   ...
   local hBmpOld, nZeroZeroClr, nOldClr
   ...
   if ::lTransparent
      hBmpOld = SelectObject( ::hDC, ::hBitmap1 )
      nZeroZeroClr = GetPixel( ::hDC, 0, 0 )
      SelectObject( ::hDC, hBmpOld )
      nOldClr = SetBkColor( ::hDC, nRGB( 255, 255, 255 ) )
      TransBmp( ::hBitmap1, nBmpWidth( ::hBitmap1 ), nBmpHeight( ::hBitmap1 ), nZeroZeroClr, ::hDC,;
                If( ::lPressed, 2, 1 ), If( ::lPressed, 2, 1 ),;
                nBmpWidth( ::hBitmap1 ), nBmpHeight( ::hBitmap1 ) )
      SetBkColor( ::hDC, nOldClr )         
   else   
      PalBtnPaint( ::hWnd, ::hBitmap1, ::hPalette1, ::hBitmap2, ::hPalette2,;
                   ::hBitmap3, ::hPalette3, ::lPressed, ::lAdjust, ::lBorder,;
                   ::oPopup != nil, ::nClrPane,  ::cCaption, ::nLayout,;
                   If( ::oFont != nil, ::oFont:hFont, 0 ), ::nClrText, ::hDC )
   endif             


[reinaldocrespo]

Antonio;

Better. But still. The problem is that I have a grading effect on the background.

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      nZeroZeroClr = GetPixel( ::hDC, 0,0 )


Seems to be taking the color information from the top pixel on the dialog and not from where the actual bmp is to be displayed. I tried using ::ntop, ::nleft; but it made it worse.

Any other idea?

Reinaldo.

[Antonio Linares]

Reinaldo,

nZeroZeroClr is the color of the bitmap at 0, 0, used to build a mask to do the transparency.

TransBmp() should paint ok on a gradient. How does it looks ? Please post an image.

[reinaldocrespo]

Antonio;

Thank you so much for your interest and for answering every question.

Below is a screen shoot. Notice how the border around the btnbmp is painted with the pixel color of the first leftmost pixel.



Reinaldo

[Antonio Linares]

Reinaldo,

How are you painting the gradient ?

Is it a brush ?

[reinaldocrespo]

Yes, it is a brush.

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   DEFINE BRUSH oBrush RESOURCE "Bckg"
   DEFINE DIALOG oDlg NAME ... ;
   ICON oIcon OF oOwner TRANSPARENT BRUSH oBrush



Reinaldo.

[Antonio Linares]

Reinaldo,

Please email me the brush file, thanks

[Antonio Linares]

Reinaldo,

Please remove this line from Class TBtnBmp Method Paint():

FillRect( ::hDC, GetClientRect( ::hWnd ), ::oBrush:hBrush )

[reinaldocrespo]

Antonio;

After commenting that line, here is what I get:



Reinaldo.

[Antonio Linares]

Reinaldo,

This should be the right code:

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   if ::lTransparent .and. ! Empty( ::oBrush:hBitmap )
      SetBrushOrgEx( ::hDC, nBmpWidth( ::oBrush:hBitmap ) - ::nLeft, nBmpHeight( ::oBrush:hBitmap ) - ::nTop )
   endif
   FillRect( ::hDC, GetClientRect( ::hWnd ), ::oBrush:hBrush )


[reinaldocrespo]

YES!!!!

Thank you.


Reinaldo.

[ricardog]

Sr. Linares

Al hacer las correcciones a la clase TbtnBmp, (como ud. le sugiere al sr. reinaldo), los bitmaps los coloca en la parte superior izquierda, ademas de borrar el texto del boton.

Me podria ayudar con este detalle. (tambien utilizo degradados)


Por su atencion gracias

[Antonio Linares]

Ricardo,

Puedes proporcionar un pequeño ejemplo de como lo haces ? gracias