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Rewrite HitTest to make it pretty, and very fast.

This commit is contained in:
Dimitrie O. Paun 2002-10-10 03:08:45 +00:00 committed by Alexandre Julliard
parent a80ced02e9
commit 1313431b1b
1 changed files with 114 additions and 5 deletions
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119
dlls/comctl32/listview.c
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@ -5695,12 +5695,20 @@ static INT LISTVIEW_SuperHitTestItem(LISTVIEW_INFO *infoPtr, LPLVHITTESTINFO lph
* [IO] lpht : hit test information
* [I] subitem : fill out iSubItem.
*
* NOTE:
* (mm 20001022): We must not allow iSubItem to be touched, for
* an app might pass only a structure with space up to iItem!
* (MS Office 97 does that for instance in the file open dialog)
*
* RETURN:
* SUCCESS : item index
* FAILURE : -1
*/
static LRESULT LISTVIEW_HitTest(LISTVIEW_INFO *infoPtr, LPLVHITTESTINFO lpht, BOOL subitem)
{
UINT uView = infoPtr->dwStyle & LVS_TYPEMASK;
RECT rcBounds, rcIcon, rcLabel;
TRACE("(x=%ld, y=%ld)\n", lpht->pt.x, lpht->pt.y);
lpht->flags = 0;
@ -5718,12 +5726,113 @@ static LRESULT LISTVIEW_HitTest(LISTVIEW_INFO *infoPtr, LPLVHITTESTINFO lpht, BO
lpht->flags |= LVHT_BELOW;
if (lpht->flags) return -1;
lpht->flags |= LVHT_NOWHERE;
/* first deal with the large items */
if (uView == LVS_ICON && (infoPtr->dwStyle & LVS_OWNERDRAWFIXED) &&
PtInRect (&infoPtr->rcFocus, lpht->pt))
{
lpht->iItem = infoPtr->nFocusedItem;
}
else
{
if (uView == LVS_ICON || uView == LVS_SMALLICON)
{
RECT rcSearch;
ITERATOR i;
rcSearch.left = lpht->pt.x - infoPtr->nItemWidth;
rcSearch.top = lpht->pt.y - infoPtr->nItemHeight;
rcSearch.right = lpht->pt.x + 1;
rcSearch.bottom = lpht->pt.y + 1;
iterator_create_frameditems(&i, infoPtr, &rcSearch, 0);
while(iterator_next(&i))
{
if (!LISTVIEW_GetItemMeasures(infoPtr, i.nItem, &rcBounds, 0, 0, 0)) continue;
if (PtInRect(&rcBounds, lpht->pt)) break;
}
lpht->iItem = i.nItem;
iterator_destroy(&i);
}
else
{
POINT Origin, Position;
if (!LISTVIEW_GetOrigin(infoPtr, &Origin)) return -1;
Position.x = lpht->pt.x - Origin.x;
Position.y = lpht->pt.y - Origin.y;
if (Position.x < LISTVIEW_GetCountPerRow(infoPtr) * infoPtr->nItemWidth &&
Position.y < LISTVIEW_GetCountPerColumn(infoPtr) * infoPtr->nItemHeight)
{
lpht->iItem = (Position.x / infoPtr->nItemWidth) * (Position.y / infoPtr->nItemHeight);
}
}
}
if (lpht->iItem == -1) return -1;
if (!LISTVIEW_GetItemMeasures(infoPtr, lpht->iItem, 0, &rcBounds, &rcIcon, &rcLabel)) return -1;
/* NOTE (mm 20001022): We must not allow iSubItem to be touched, for
* an app might pass only a structure with space up to iItem!
* (MS Office 97 does that for instance in the file open dialog)
*/
return LISTVIEW_SuperHitTestItem(infoPtr, lpht, subitem, FALSE);
if (!PtInRect(&rcBounds, lpht->pt)) return -1;
if (PtInRect(&rcIcon, lpht->pt))
lpht->flags |= LVHT_ONITEMICON;
else if (PtInRect(&rcLabel, lpht->pt))
lpht->flags |= LVHT_ONITEMLABEL;
else if (infoPtr->himlState)
{
/* FIXME: move this to GetItemMeasures */
LVITEMW lvItem;
lvItem.mask = LVIF_STATE;
lvItem.stateMask = LVIS_STATEIMAGEMASK;
lvItem.iItem = lpht->iItem;
lvItem.iSubItem = 0;
if (!LISTVIEW_GetItemW(infoPtr, &lvItem)) return -1;
{
UINT uStateImage = (lvItem.state & LVIS_STATEIMAGEMASK) >> 12;
RECT rcState;
if (uView == LVS_ICON)
{
rcState.left = rcIcon.left - infoPtr->iconStateSize.cx + 10;
rcState.top = rcIcon.top + infoPtr->iconSize.cy - infoPtr->iconStateSize.cy + 4;
}
else
{
rcState.left = rcIcon.left - infoPtr->iconStateSize.cx - IMAGE_PADDING;
rcState.top = rcIcon.top;
}
rcState.right = rcState.left + infoPtr->iconStateSize.cx;
rcState.bottom = rcState.top + infoPtr->iconStateSize.cy;
if (uStateImage > 0 && PtInRect(&rcState, lpht->pt))
lpht->flags |= LVHT_ONITEMSTATEICON;
}
}
if (lpht->flags & LVHT_ONITEM)
lpht->flags &= ~LVHT_NOWHERE;
if (uView == LVS_REPORT && lpht->iItem != -1 && subitem)
{
INT j, nColumnCount = Header_GetItemCount(infoPtr->hwndHeader);
rcBounds.right = rcBounds.left;
for (j = 0; j < nColumnCount; j++)
{
rcBounds.left = rcBounds.right;
rcBounds.right += LISTVIEW_GetColumnWidth(infoPtr, j);
if (PtInRect(&rcBounds, lpht->pt))
{
lpht->iSubItem = j;
break;
}
}
}
return lpht->iItem;
}