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Fixed some flickering that was occurring in the image list control 

when it repainted.
This commit is contained in:
Jason Mawdsley 2000-10-22 23:43:56 +00:00 committed by Alexandre Julliard
parent c472708f69
commit e7b84a9b54
1 changed files with 106 additions and 47 deletions
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153
dlls/comctl32/imagelist.c
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@ -2,6 +2,7 @@
* ImageList implementation
*
* Copyright 1998 Eric Kohl
* 2000 Jason Mawdsley.
*
* TODO:
* - Fix ImageList_DrawIndirect (xBitmap, yBitmap, rgbFg, rgbBk, dwRop).
@ -160,6 +161,25 @@ IMAGELIST_InternalDraw(IMAGELISTDRAWPARAMS *pimldp, INT cx, INT cy)
}
/*************************************************************************
* IMAGELIST_InternalDrawMask [Internal]
*
* Draws the image in the ImageList witht the mask
*
* PARAMS
* pimldp [I] pointer to IMAGELISTDRAWPARAMS structure.
* cx [I] the width of the image to display
* cy............[I] the height of the image to display
*
* RETURNS
* nothing
*
* NOTES
* This functions is used by ImageList_DrawIndirect, when it is
* required to draw the Image with the mask to the screen.
*
* Blending and Overlays styles are accomplised by another function.
*/
/*************************************************************************
* IMAGELIST_InternalDrawMask [Internal]
*
@ -182,88 +202,127 @@ IMAGELIST_InternalDraw(IMAGELISTDRAWPARAMS *pimldp, INT cx, INT cy)
static VOID
IMAGELIST_InternalDrawMask(IMAGELISTDRAWPARAMS *pimldp, INT cx, INT cy)
{
HDC hMaskDC, hImageDC;
BOOL bUseCustomBackground, bBlendFlag;
HBRUSH hBrush, hOldBrush;
HDC hMaskDC, hImageDC;
HBITMAP hOldBitmapImage, hOldBitmapMask;
HIMAGELIST himlLocal = pimldp->himl;
COLORREF oldBkColor, oldFgColor;
UINT fStyle = pimldp->fStyle & (~ILD_OVERLAYMASK);
/*
* We need a dc and bitmap to draw on that is
* not on the screen.
*/
HDC hOffScreenDC = 0;
HBITMAP hOffScreenBmp = 0;
bUseCustomBackground = (himlLocal->clrBk != CLR_NONE);
bBlendFlag = (fStyle & ILD_BLEND50 ) || (fStyle & ILD_BLEND25);
hImageDC = CreateCompatibleDC(0);
hMaskDC = CreateCompatibleDC(0);
/* Create a compatible DC. */
hOffScreenDC = CreateCompatibleDC( pimldp->hdcDst );
if ( hOffScreenDC )
{
hOffScreenBmp = CreateCompatibleBitmap( pimldp->hdcDst, cx, cy );
if ( hOffScreenBmp )
SelectObject( hOffScreenDC, hOffScreenBmp );
else
goto cleanup;
}
else
goto cleanup;
hOldBitmapImage = SelectObject(hImageDC, himlLocal->hbmImage);
hOldBitmapMask = SelectObject(hMaskDC, himlLocal->hbmMask);
/* Draw the Background for the appropriate Styles
*/
if( bUseCustomBackground &&
(fStyle == ILD_NORMAL || fStyle & ILD_IMAGE || bBlendFlag))
/*
* Get a copy of the image for the masking operations.
* We will use the copy, and this dc for all the various
* blitting, and then do one final blit to the screen dc.
* This should clean up most of the flickering.
*/
BitBlt( hOffScreenDC, 0, 0, cx, cy, pimldp->hdcDst, pimldp->x,
pimldp->y, SRCCOPY);
/*
* Draw the Background for the appropriate Styles
*/
if( bUseCustomBackground && (fStyle == ILD_NORMAL || fStyle & ILD_IMAGE
|| bBlendFlag) )
{
hBrush = CreateSolidBrush (himlLocal->clrBk);
hOldBrush = SelectObject (pimldp->hdcDst, hBrush);
PatBlt (pimldp->hdcDst,
pimldp->x, pimldp->y, cx, cy,
PATCOPY);
PatBlt( hOffScreenDC, pimldp->x, pimldp->y, cx, cy, PATCOPY );
DeleteObject (SelectObject (pimldp->hdcDst, hOldBrush));
}
/* Draw Image Transparently over the current background
*/
if(fStyle == ILD_NORMAL
|| (fStyle & ILD_TRANSPARENT)
|| ((fStyle & ILD_IMAGE) && bUseCustomBackground)
|| bBlendFlag)
{
/* to obtain a transparent look, background color should be set
to white and foreground color to black when blting the
monochrome mask. */
oldBkColor = SetBkColor(pimldp->hdcDst, RGB(0xff, 0xff, 0xff));
oldFgColor = SetTextColor(pimldp->hdcDst, RGB(0, 0, 0));
/*
* Draw Image Transparently over the current background
*/
if(fStyle == ILD_NORMAL || (fStyle & ILD_TRANSPARENT) ||
((fStyle & ILD_IMAGE) && bUseCustomBackground) || bBlendFlag)
{ /*
* To obtain a transparent look, background color should be set
* to white and foreground color to black when blting the
* monochrome mask.
*/
oldBkColor = SetBkColor( hOffScreenDC, RGB( 0xff, 0xff, 0xff ) );
oldFgColor = SetTextColor( hOffScreenDC, RGB( 0, 0, 0 ) );
BitBlt(pimldp->hdcDst,
pimldp->x, pimldp->y, cx, cy,
hMaskDC,
himlLocal->cx * pimldp->i, 0,
SRCAND);
BitBlt( hOffScreenDC, 0, 0, cx, cy,hMaskDC, himlLocal->cx * pimldp->i,
0, SRCAND );
BitBlt(pimldp->hdcDst,
pimldp->x, pimldp->y, cx, cy,
hImageDC,
himlLocal->cx * pimldp->i, 0,
SRCPAINT);
SetBkColor(pimldp->hdcDst, oldBkColor);
SetTextColor(pimldp->hdcDst, oldFgColor);
BitBlt( hOffScreenDC, 0, 0, cx, cy, hImageDC,himlLocal->cx * pimldp->i,
0, SRCPAINT );
}
/* Draw the image when no Background is specified
*/
/*
* Draw the image when no Background is specified
*/
else if((fStyle & ILD_IMAGE) && !bUseCustomBackground)
{
BitBlt(pimldp->hdcDst,
pimldp->x, pimldp->y, cx, cy,
hImageDC,
himlLocal->cx * pimldp->i, 0,
SRCCOPY);
BitBlt( hOffScreenDC, 0, 0, cx, cy, hImageDC,
himlLocal->cx * pimldp->i, 0, SRCCOPY);
}
/* Draw the mask with or without a background
*/
/*
* Draw the mask with or without a background
*/
else if(fStyle & ILD_MASK)
{
BitBlt(pimldp->hdcDst,
pimldp->x, pimldp->y, cx, cy,
hMaskDC,
himlLocal->cx * pimldp->i, 0,
bUseCustomBackground ? SRCCOPY : SRCAND);
BitBlt( hOffScreenDC, 0, 0, cx, cy, hMaskDC, himlLocal->cx * pimldp->i,
0, bUseCustomBackground ? SRCCOPY : SRCAND);
}
/*
* Blit the bitmap to the screen now.
*/
BitBlt( pimldp->hdcDst, pimldp->x, pimldp->y, cx, cy,
hOffScreenDC, 0, 0, SRCCOPY);
SelectObject(hImageDC, hOldBitmapImage);
SelectObject(hMaskDC, hOldBitmapMask);
cleanup:
DeleteDC(hImageDC);
DeleteDC(hMaskDC);
DeleteDC( hOffScreenDC );
DeleteObject( hOffScreenBmp );
return;
}
/*************************************************************************