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gdi32: Add helpers to clear and free dib_info structures.

This commit is contained in:
Huw Davies 2011-05-12 11:27:35 +01:00 committed by Alexandre Julliard
parent 735657d1b8
commit 5ac51cd24f
1 changed files with 35 additions and 13 deletions
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48
dlls/gdi32/dibdrv/dc.c
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@ -27,17 +27,6 @@
WINE_DEFAULT_DEBUG_CHANNEL(dib);
/***********************************************************************
* dibdrv_DeleteDC
*/
static BOOL CDECL dibdrv_DeleteDC( PHYSDEV dev )
{
dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
TRACE("(%p)\n", dev);
DeleteObject(pdev->clip);
return 0;
}
static void calc_shift_and_len(DWORD mask, int *shift, int *len)
{
int s, l;
@ -74,7 +63,7 @@ static void init_bit_fields(dib_info *dib, const DWORD *bit_fields)
calc_shift_and_len(dib->blue_mask, &dib->blue_shift, &dib->blue_len);
}
static BOOL init_dib(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD *bit_fields, void *bits)
static BOOL init_dib_info(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD *bit_fields, void *bits)
{
static const DWORD bit_fields_888[3] = {0xff0000, 0x00ff00, 0x0000ff};
@ -119,6 +108,37 @@ static BOOL init_dib(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD *bit
return TRUE;
}
static void clear_dib_info(dib_info *dib)
{
dib->bits = NULL;
}
/**********************************************************************
* free_dib_info
*
* Free the resources associated with a dib and optionally the bits
*/
static void free_dib_info(dib_info *dib, BOOL free_bits)
{
if(free_bits)
{
HeapFree(GetProcessHeap(), 0, dib->bits);
dib->bits = NULL;
}
}
/***********************************************************************
* dibdrv_DeleteDC
*/
static BOOL CDECL dibdrv_DeleteDC( PHYSDEV dev )
{
dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
TRACE("(%p)\n", dev);
DeleteObject(pdev->clip);
free_dib_info(&pdev->dib, FALSE);
return 0;
}
/***********************************************************************
* dibdrv_SelectBitmap
*/
@ -135,7 +155,9 @@ static HBITMAP CDECL dibdrv_SelectBitmap( PHYSDEV dev, HBITMAP bitmap )
pdev->clip = CreateRectRgn(0, 0, 0, 0);
pdev->defer = 0;
if(!init_dib(&pdev->dib, &bmp->dib->dsBmih, bmp->dib->dsBitfields, bmp->dib->dsBm.bmBits))
clear_dib_info(&pdev->dib);
if(!init_dib_info(&pdev->dib, &bmp->dib->dsBmih, bmp->dib->dsBitfields, bmp->dib->dsBm.bmBits))
pdev->defer |= DEFER_FORMAT;
GDI_ReleaseObj( bitmap );