Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=32374 Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com --- dlls/user32/listbox.c | 280 ++++++++++++++++++++++++++++++------------ 1 file changed, 201 insertions(+), 79 deletions(-)
diff --git a/dlls/user32/listbox.c b/dlls/user32/listbox.c index 286a33b..8c5b62f 100644 --- a/dlls/user32/listbox.c +++ b/dlls/user32/listbox.c @@ -18,7 +18,7 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * * TODO: - * - LBS_NODATA + * - LBS_NODATA for multi-selection listboxes */
#include <string.h> @@ -150,6 +150,71 @@ const struct builtin_class_descr COMBOLBOX_builtin_class = };
+/*********************************************************************** + * Helper functions for LBS_NODATA listboxes + * + * Since LBS_NODATA listboxes can be extremely large, we need to store + * them with minimal overhead, both for performance and memory usage. + * + * In all cases, it is important to note that descr->items must never be + * dereferenced directly with LBS_NODATA, outside of these helpers. + * + * For single-selection listboxes, we store literally no data for items, + * and thus descr->items will always be NULL in this case. + * + * FIXME: Multi-selection listboxes are not implemented yet for LBS_NODATA. + * + */ +static BOOL is_singlesel_NODATA(const LB_DESCR *descr) +{ + return (descr->style & LBS_NODATA) && + !(descr->style & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)); +} + +static BOOL NODATA_is_sel(const LB_DESCR *descr, UINT index) +{ + return index == descr->selected_item; +} + +static BOOL NODATA_multisel_expand(LB_DESCR *descr, UINT num) +{ + LB_ITEMDATA *p = descr->items; + UINT sz = num * sizeof(*p); + + if (!p || sz > HeapSize(GetProcessHeap(), 0, p)) + { + sz += LB_ARRAY_GRANULARITY * sizeof(*p) - 1; + sz /= LB_ARRAY_GRANULARITY * sizeof(*p); + if (!p) p = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sz); + else p = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, p, sz); + if (!p) return FALSE; + descr->items = p; + } + return TRUE; +} + +static void NODATA_multisel_shrink(LB_DESCR *descr, UINT orig_num) +{ + LB_ITEMDATA *p = descr->items; + UINT sz = descr->nb_items * sizeof(*p); + UINT orig_sz = orig_num * sizeof(*p); + + /* Shrink the array if needed */ + if (sz + LB_ARRAY_GRANULARITY * sizeof(*p) * 2 < HeapSize(GetProcessHeap(), 0, p)) + { + UINT rnd_sz = (sz + LB_ARRAY_GRANULARITY * sizeof(*p) - 1) / + (LB_ARRAY_GRANULARITY * sizeof(*p)); + if ((p = HeapReAlloc(GetProcessHeap(), 0, p, rnd_sz))) + { + descr->items = p; + orig_sz = rnd_sz; + } + } + memset(&p[sz / sizeof(*p)], 0, orig_sz - sz); +} + + + /*********************************************************************** * LISTBOX_GetCurrentPageSize * @@ -519,7 +584,7 @@ static void LISTBOX_PaintItem( LB_DESCR *descr, HDC hdc, const RECT *rect, RECT r; HRGN hrgn;
- if (!item) + if (index >= descr->nb_items) { if (action == ODA_FOCUS) DrawFocusRect( hdc, rect ); @@ -542,16 +607,19 @@ static void LISTBOX_PaintItem( LB_DESCR *descr, HDC hdc, const RECT *rect, dis.hDC = hdc; dis.itemID = index; dis.itemState = 0; - if (item->selected) dis.itemState |= ODS_SELECTED; + if ( ( is_singlesel_NODATA(descr) && NODATA_is_sel(descr, index)) || + (!is_singlesel_NODATA(descr) && item->selected) ) + dis.itemState |= ODS_SELECTED; + if (!ignoreFocus && (descr->focus_item == index) && (descr->caret_on) && (descr->in_focus)) dis.itemState |= ODS_FOCUS; if (!IsWindowEnabled(descr->self)) dis.itemState |= ODS_DISABLED; - dis.itemData = item->data; + dis.itemData = (descr->style & LBS_NODATA) ? 0 : item->data; dis.rcItem = *rect; TRACE("[%p]: drawitem %d (%s) action=%02x state=%02x rect=%s\n", - descr->self, index, debugstr_w(item->str), action, - dis.itemState, wine_dbgstr_rect(rect) ); + descr->self, index, debugstr_w((descr->style & LBS_NODATA) ? NULL : item->str), + action, dis.itemState, wine_dbgstr_rect(rect) ); SendMessageW(descr->owner, WM_DRAWITEM, dis.CtlID, (LPARAM)&dis); SelectClipRgn( hdc, hrgn ); if (hrgn) DeleteObject( hrgn ); @@ -698,6 +766,9 @@ static LRESULT LISTBOX_InitStorage( LB_DESCR *descr, INT nb_items ) { LB_ITEMDATA *item;
+ if (is_singlesel_NODATA(descr)) + return LB_OKAY; + nb_items += LB_ARRAY_GRANULARITY - 1; nb_items -= (nb_items % LB_ARRAY_GRANULARITY); if (descr->items) { @@ -1449,10 +1520,13 @@ static LRESULT LISTBOX_SetSelection( LB_DESCR *descr, INT index, { INT oldsel = descr->selected_item; if (index == oldsel) return LB_OKAY; - if (oldsel != -1) descr->items[oldsel].selected = FALSE; - if (index != -1) descr->items[index].selected = TRUE; - if (oldsel != -1) LISTBOX_RepaintItem( descr, oldsel, ODA_SELECT ); + if (!(descr->style & LBS_NODATA)) + { + if (oldsel != -1) descr->items[oldsel].selected = FALSE; + if (index != -1) descr->items[index].selected = TRUE; + } descr->selected_item = index; + if (oldsel != -1) LISTBOX_RepaintItem( descr, oldsel, ODA_SELECT ); if (index != -1) LISTBOX_RepaintItem( descr, index, ODA_SELECT ); if (send_notify && descr->nb_items) SEND_NOTIFICATION( descr, (index != -1) ? LBN_SELCHANGE : LBN_SELCANCEL ); @@ -1525,54 +1599,59 @@ static LRESULT LISTBOX_InsertItem( LB_DESCR *descr, INT index,
if (index == -1) index = descr->nb_items; else if ((index < 0) || (index > descr->nb_items)) return LB_ERR; - if (!descr->items) max_items = 0; - else max_items = HeapSize( GetProcessHeap(), 0, descr->items ) / sizeof(*item); - if (descr->nb_items == max_items) - { - /* We need to grow the array */ - max_items += LB_ARRAY_GRANULARITY; - if (descr->items) - item = HeapReAlloc( GetProcessHeap(), 0, descr->items, - max_items * sizeof(LB_ITEMDATA) ); - else - item = HeapAlloc( GetProcessHeap(), 0, - max_items * sizeof(LB_ITEMDATA) ); - if (!item) + if (is_singlesel_NODATA(descr)) + { + descr->nb_items++; + } + else + { + if (!descr->items) max_items = 0; + else max_items = HeapSize( GetProcessHeap(), 0, descr->items ) / sizeof(*item); + if (descr->nb_items == max_items) { - SEND_NOTIFICATION( descr, LBN_ERRSPACE ); - return LB_ERRSPACE; + /* We need to grow the array */ + max_items += LB_ARRAY_GRANULARITY; + if (descr->items) + item = HeapReAlloc( GetProcessHeap(), 0, descr->items, + max_items * sizeof(LB_ITEMDATA) ); + else + item = HeapAlloc( GetProcessHeap(), 0, + max_items * sizeof(LB_ITEMDATA) ); + if (!item) + { + SEND_NOTIFICATION( descr, LBN_ERRSPACE ); + return LB_ERRSPACE; + } + descr->items = item; } - descr->items = item; - } - - /* Insert the item structure */
- item = &descr->items[index]; - if (index < descr->nb_items) - RtlMoveMemory( item + 1, item, - (descr->nb_items - index) * sizeof(LB_ITEMDATA) ); - item->str = str; - item->data = HAS_STRINGS(descr) ? 0 : data; - item->height = 0; - item->selected = FALSE; - descr->nb_items++; + /* Insert the item structure */ + item = &descr->items[index]; + if (index < descr->nb_items) + RtlMoveMemory( item + 1, item, + (descr->nb_items - index) * sizeof(LB_ITEMDATA) ); + item->str = str; + item->data = HAS_STRINGS(descr) ? 0 : data; + item->height = 0; + item->selected = FALSE; + descr->nb_items++;
- /* Get item height */ - - if (descr->style & LBS_OWNERDRAWVARIABLE) - { - MEASUREITEMSTRUCT mis; - UINT id = (UINT)GetWindowLongPtrW( descr->self, GWLP_ID ); + /* Get item height */ + if (descr->style & LBS_OWNERDRAWVARIABLE) + { + MEASUREITEMSTRUCT mis; + UINT id = (UINT)GetWindowLongPtrW( descr->self, GWLP_ID );
- mis.CtlType = ODT_LISTBOX; - mis.CtlID = id; - mis.itemID = index; - mis.itemData = str ? (ULONG_PTR)str : data; - mis.itemHeight = descr->item_height; - SendMessageW( descr->owner, WM_MEASUREITEM, id, (LPARAM)&mis ); - item->height = mis.itemHeight ? mis.itemHeight : 1; - TRACE("[%p]: measure item %d (%s) = %d\n", - descr->self, index, str ? debugstr_w(str) : "", item->height ); + mis.CtlType = ODT_LISTBOX; + mis.CtlID = id; + mis.itemID = index; + mis.itemData = str ? (ULONG_PTR)str : data; + mis.itemHeight = descr->item_height; + SendMessageW( descr->owner, WM_MEASUREITEM, id, (LPARAM)&mis ); + item->height = mis.itemHeight ? mis.itemHeight : 1; + TRACE("[%p]: measure item %d (%s) = %d\n", + descr->self, index, str ? debugstr_w(str) : "", item->height ); + } }
/* Repaint the items */ @@ -1687,28 +1766,38 @@ static LRESULT LISTBOX_RemoveItem( LB_DESCR *descr, INT index ) LISTBOX_InvalidateItems( descr, index );
descr->nb_items--; - LISTBOX_DeleteItem( descr, index ); - - if (!descr->nb_items) return LB_OKAY; - - /* Remove the item */ + if (is_singlesel_NODATA(descr)) + { + if (!descr->nb_items) + { + SendMessageW(descr->self, LB_RESETCONTENT, 0, 0); + return LB_OKAY; + } + } + else + { + LISTBOX_DeleteItem( descr, index );
- item = &descr->items[index]; - if (index < descr->nb_items) - RtlMoveMemory( item, item + 1, - (descr->nb_items - index) * sizeof(LB_ITEMDATA) ); - if (descr->anchor_item == descr->nb_items) descr->anchor_item--; + if (!descr->nb_items) return LB_OKAY;
- /* Shrink the item array if possible */ + /* Remove the item */ + item = &descr->items[index]; + if (index < descr->nb_items) + RtlMoveMemory( item, item + 1, + (descr->nb_items - index) * sizeof(LB_ITEMDATA) );
- max_items = HeapSize( GetProcessHeap(), 0, descr->items ) / sizeof(LB_ITEMDATA); - if (descr->nb_items < max_items - 2*LB_ARRAY_GRANULARITY) - { - max_items -= LB_ARRAY_GRANULARITY; - item = HeapReAlloc( GetProcessHeap(), 0, descr->items, - max_items * sizeof(LB_ITEMDATA) ); - if (item) descr->items = item; + /* Shrink the item array if possible */ + max_items = HeapSize( GetProcessHeap(), 0, descr->items ) / sizeof(LB_ITEMDATA); + if (descr->nb_items < max_items - 2*LB_ARRAY_GRANULARITY) + { + max_items -= LB_ARRAY_GRANULARITY; + item = HeapReAlloc( GetProcessHeap(), 0, descr->items, + max_items * sizeof(LB_ITEMDATA) ); + if (item) descr->items = item; + } } + descr->anchor_item = min(descr->anchor_item, descr->nb_items - 1); + /* Repaint the items */
LISTBOX_UpdateScroll( descr ); @@ -1746,7 +1835,8 @@ static void LISTBOX_ResetContent( LB_DESCR *descr ) { INT i;
- for(i = descr->nb_items - 1; i>=0; i--) LISTBOX_DeleteItem( descr, i); + if (!is_singlesel_NODATA(descr)) + for (i = descr->nb_items - 1; i >= 0; i--) LISTBOX_DeleteItem(descr, i); HeapFree( GetProcessHeap(), 0, descr->items ); descr->nb_items = 0; descr->top_item = 0; @@ -1762,26 +1852,56 @@ static void LISTBOX_ResetContent( LB_DESCR *descr ) */ static LRESULT LISTBOX_SetCount( LB_DESCR *descr, INT count ) { - LRESULT ret; + INT orig_num;
if (!(descr->style & LBS_NODATA)) { SetLastError(ERROR_SETCOUNT_ON_BAD_LB); return LB_ERR; } + count = max(count, 0);
- /* FIXME: this is far from optimal... */ if (count > descr->nb_items) { - while (count > descr->nb_items) - if ((ret = LISTBOX_InsertString( descr, -1, 0 )) < 0) - return ret; + if ((descr->style & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)) && + !NODATA_multisel_expand(descr, count)) + { + SEND_NOTIFICATION(descr, LBN_ERRSPACE); + return LB_ERRSPACE; + } + orig_num = descr->nb_items; + descr->nb_items = count; + + LISTBOX_UpdateScroll(descr); + LISTBOX_InvalidateItems(descr, orig_num); + + /* If listbox was empty, set focus to the first item */ + if (orig_num == 0) LISTBOX_SetCaretIndex(descr, 0, FALSE); } else if (count < descr->nb_items) { - while (count < descr->nb_items) - if ((ret = LISTBOX_RemoveItem( descr, (descr->nb_items - 1) )) < 0) - return ret; + LISTBOX_InvalidateItems(descr, count); + orig_num = descr->nb_items; + descr->nb_items = count; + + if (count == 0) SendMessageW(descr->self, LB_RESETCONTENT, 0, 0); + else + { + descr->anchor_item = min(descr->anchor_item, count - 1); + + if (descr->style & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)) + NODATA_multisel_shrink(descr, orig_num); + else if (descr->selected_item >= descr->nb_items) + descr->selected_item = -1; + + LISTBOX_UpdateScroll(descr); + + /* If we removed the scrollbar, reset the top of the list */ + if (descr->nb_items <= descr->page_size && orig_num > descr->page_size) + LISTBOX_SetTopItem(descr, 0, TRUE); + + descr->focus_item = min(descr->focus_item, descr->nb_items - 1); + } }
InvalidateRect( descr->self, NULL, TRUE ); @@ -2866,6 +2986,8 @@ LRESULT ListBoxWndProc_common( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam case LB_GETSEL: if (((INT)wParam < 0) || ((INT)wParam >= descr->nb_items)) return LB_ERR; + if (is_singlesel_NODATA(descr)) + return NODATA_is_sel(descr, wParam); return descr->items[wParam].selected;
case LB_SETSEL: