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comctl32/listview: Simplify iterator helpers that can't fail. 

Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Nikolay Sivov 2018-10-15 12:39:02 +03:00 committed by Alexandre Julliard
parent fae75d7961
commit 332062963f
1 changed files with 15 additions and 11 deletions
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26
dlls/comctl32/listview.c
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@ -1315,21 +1315,19 @@ static inline void iterator_destroy(const ITERATOR *i)
/***
* Create an empty iterator.
*/
static inline BOOL iterator_empty(ITERATOR* i)
static inline void iterator_empty(ITERATOR* i)
{
ZeroMemory(i, sizeof(*i));
i->nItem = i->nSpecial = i->range.lower = i->range.upper = -1;
return TRUE;
}
/***
* Create an iterator over a range.
*/
static inline BOOL iterator_rangeitems(ITERATOR* i, RANGE range)
static inline void iterator_rangeitems(ITERATOR* i, RANGE range)
{
iterator_empty(i);
i->range = range;
return TRUE;
}
/***
@ -1337,11 +1335,10 @@ static inline BOOL iterator_rangeitems(ITERATOR* i, RANGE range)
* Please note that the iterator will take ownership of the ranges,
* and will free them upon destruction.
*/
static inline BOOL iterator_rangesitems(ITERATOR* i, RANGES ranges)
static inline void iterator_rangesitems(ITERATOR* i, RANGES ranges)
{
iterator_empty(i);
i->ranges = ranges;
return TRUE;
}
/***
@ -1351,11 +1348,12 @@ static inline BOOL iterator_rangesitems(ITERATOR* i, RANGES ranges)
static BOOL iterator_frameditems_absolute(ITERATOR* i, const LISTVIEW_INFO* infoPtr, const RECT *frame)
{
RECT rcItem, rcTemp;
RANGES ranges;
TRACE("(frame=%s)\n", wine_dbgstr_rect(frame));
/* in case we fail, we want to return an empty iterator */
if (!iterator_empty(i)) return FALSE;
iterator_empty(i);
if (infoPtr->nItemCount == 0)
return TRUE;
@ -1370,7 +1368,8 @@ static BOOL iterator_frameditems_absolute(ITERATOR* i, const LISTVIEW_INFO* info
if (IntersectRect(&rcTemp, &rcItem, frame))
i->nSpecial = infoPtr->nFocusedItem;
}
if (!(iterator_rangesitems(i, ranges_create(50)))) return FALSE;
if (!(ranges = ranges_create(50))) return FALSE;
iterator_rangesitems(i, ranges);
/* to do better here, we need to have PosX, and PosY sorted */
TRACE("building icon ranges:\n");
for (nItem = 0; nItem < infoPtr->nItemCount; nItem++)
@ -1394,7 +1393,7 @@ static BOOL iterator_frameditems_absolute(ITERATOR* i, const LISTVIEW_INFO* info
range.lower = max(frame->top / infoPtr->nItemHeight, 0);
range.upper = min((frame->bottom - 1) / infoPtr->nItemHeight, infoPtr->nItemCount - 1) + 1;
if (range.upper <= range.lower) return TRUE;
if (!iterator_rangeitems(i, range)) return FALSE;
iterator_rangeitems(i, range);
TRACE(" report=%s\n", debugrange(&i->range));
}
else
@ -1426,7 +1425,8 @@ static BOOL iterator_frameditems_absolute(ITERATOR* i, const LISTVIEW_INFO* info
if (nLastCol < nFirstCol || nLastRow < nFirstRow) return TRUE;
if (!(iterator_rangesitems(i, ranges_create(nLastCol - nFirstCol + 1)))) return FALSE;
if (!(ranges = ranges_create(nLastCol - nFirstCol + 1))) return FALSE;
iterator_rangesitems(i, ranges);
TRACE("building list ranges:\n");
for (nCol = nFirstCol; nCol <= nLastCol; nCol++)
{
@ -1467,7 +1467,11 @@ static BOOL iterator_visibleitems(ITERATOR *i, const LISTVIEW_INFO *infoPtr, HDC
INT rgntype;
rgntype = GetClipBox(hdc, &rcClip);
if (rgntype == NULLREGION) return iterator_empty(i);
if (rgntype == NULLREGION)
{
iterator_empty(i);
return TRUE;
}
if (!iterator_frameditems(i, infoPtr, &rcClip)) return FALSE;
if (rgntype == SIMPLEREGION) return TRUE;