X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ec27ba21edb68682b64a7038a4d3eea1f62752ad..60ee01727442e8b364825cd965a3e06c21f07833:/src/msw/listctrl.cpp?ds=sidebyside

diff --git a/src/msw/listctrl.cpp b/src/msw/listctrl.cpp
index 364d62f034..17edff1faf 100644
--- a/src/msw/listctrl.cpp
+++ b/src/msw/listctrl.cpp
@@ -82,6 +82,31 @@ static void wxConvertToMSWListCol(HWND hwndList,
                                   const wxListItem& item,
                                   LV_COLUMN& lvCol);
 
+namespace
+{
+
+// replacement for ListView_GetSubItemRect() which provokes warnings like
+// "the address of 'rc' will always evaluate as 'true'" when used with mingw32
+// 4.3+
+//
+// this function does no error checking on item and subitem parameters, notice
+// that subitem is 0 for whole item or 1-based for the individual columns
+inline bool
+wxGetListCtrlSubItemRect(HWND hwnd, int item, int subitem, int flags, RECT& rect)
+{
+    rect.top = subitem;
+    rect.left = flags;
+    return ::SendMessage(hwnd, LVM_GETSUBITEMRECT, item, (LPARAM)&rect) != 0;
+}
+
+inline bool
+wxGetListCtrlItemRect(HWND hwnd, int item, int flags, RECT& rect)
+{
+    return wxGetListCtrlSubItemRect(hwnd, item, 0, flags, rect);
+}
+
+} // anonymous namespace
+
 // ----------------------------------------------------------------------------
 // private helper classes
 // ----------------------------------------------------------------------------
@@ -1082,19 +1107,40 @@ bool wxListCtrl::SetItemPtrData(long item, wxUIntPtr data)
 
 wxRect wxListCtrl::GetViewRect() const
 {
-    wxASSERT_MSG( !HasFlag(wxLC_REPORT | wxLC_LIST),
-                    _T("wxListCtrl::GetViewRect() only works in icon mode") );
+    wxRect rect;
 
-    RECT rc;
-    if ( !ListView_GetViewRect(GetHwnd(), &rc) )
+    // ListView_GetViewRect() can only be used in icon and small icon views
+    // (this is documented in MSDN and, indeed, it returns bogus results in
+    // report view, at least with comctl32.dll v6 under Windows 2003)
+    if ( HasFlag(wxLC_ICON | wxLC_SMALL_ICON) )
     {
-        wxLogDebug(_T("ListView_GetViewRect() failed."));
+        RECT rc;
+        if ( !ListView_GetViewRect(GetHwnd(), &rc) )
+        {
+            wxLogDebug(_T("ListView_GetViewRect() failed."));
+
+            wxZeroMemory(rc);
+        }
 
-        wxZeroMemory(rc);
+        wxCopyRECTToRect(rc, rect);
     }
+    else if ( HasFlag(wxLC_REPORT) )
+    {
+        const long count = GetItemCount();
+        if ( count )
+        {
+            GetItemRect(wxMin(GetTopItem() + GetCountPerPage(), count - 1), rect);
 
-    wxRect rect;
-    wxCopyRECTToRect(rc, rect);
+            // extend the rectangle to start at the top (we include the column
+            // headers, if any, for compatibility with the generic version)
+            rect.height += rect.y;
+            rect.y = 0;
+        }
+    }
+    else
+    {
+        wxFAIL_MSG( _T("not implemented in this mode") );
+    }
 
     return rect;
 }
@@ -1120,7 +1166,12 @@ bool wxListCtrl::GetItemRect(long item, wxRect& rect, int code) const
  */
 bool wxListCtrl::GetSubItemRect(long item, long subItem, wxRect& rect, int code) const
 {
-    RECT rectWin;
+    // ListView_GetSubItemRect() doesn't do subItem error checking and returns
+    // true even for the out of range values of it (even if the results are
+    // completely bogus in this case), so we check item validity ourselves
+    wxCHECK_MSG( subItem == wxLIST_GETSUBITEMRECT_WHOLEITEM ||
+                    (subItem >= 0 && subItem < GetColumnCount()),
+                 false, _T("invalid sub item index") );
 
     int codeWin;
     if ( code == wxLIST_RECT_BOUNDS )
@@ -1135,27 +1186,26 @@ bool wxListCtrl::GetSubItemRect(long item, long subItem, wxRect& rect, int code)
         codeWin = LVIR_BOUNDS;
     }
 
-    bool success;
-    if( subItem == wxLIST_GETSUBITEMRECT_WHOLEITEM)
-    {
-      success = ListView_GetItemRect(GetHwnd(), (int) item, &rectWin, codeWin) != 0;
-    }
-    else if( subItem >= 0)
-    {
-      success = ListView_GetSubItemRect( GetHwnd(), (int) item, (int) subItem, codeWin, &rectWin) != 0;
-    }
-    else
+    RECT rectWin;
+    if ( !wxGetListCtrlSubItemRect
+          (
+            GetHwnd(),
+            item,
+            subItem == wxLIST_GETSUBITEMRECT_WHOLEITEM ? 0 : subItem,
+            codeWin,
+            rectWin
+          ) )
     {
-      wxFAIL_MSG( _T("incorrect subItem number in GetSubItemRect()") );
-      return false;
+        return false;
     }
 
-    rect.x = rectWin.left;
-    rect.y = rectWin.top;
-    rect.width = rectWin.right - rectWin.left;
-    rect.height = rectWin.bottom - rectWin.top;
+    wxCopyRECTToRect(rectWin, rect);
 
-    return success;
+    // for the first sub item, i.e. the main item itself, the returned rect is
+    // the whole line one, we need to truncate it at first column ourselves
+    rect.width = GetColumnWidth(0);
+
+    return true;
 }
 
 
@@ -2526,10 +2576,10 @@ bool wxListCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 static RECT GetCustomDrawnItemRect(const NMCUSTOMDRAW& nmcd)
 {
     RECT rc;
-    ListView_GetItemRect(nmcd.hdr.hwndFrom, nmcd.dwItemSpec, &rc, LVIR_BOUNDS);
+    wxGetListCtrlItemRect(nmcd.hdr.hwndFrom, nmcd.dwItemSpec, LVIR_BOUNDS, rc);
 
     RECT rcIcon;
-    ListView_GetItemRect(nmcd.hdr.hwndFrom, nmcd.dwItemSpec, &rcIcon, LVIR_ICON);
+    wxGetListCtrlItemRect(nmcd.hdr.hwndFrom, nmcd.dwItemSpec, LVIR_ICON, rcIcon);
 
     // exclude the icon part, neither the selection background nor focus rect
     // should cover it
@@ -2552,22 +2602,10 @@ bool HandleSubItemPrepaint(LPNMLVCUSTOMDRAW pLVCD, HFONT hfont, int colCount)
     SelectInHDC selFont(hdc, hfont);
 
     // get the rectangle to paint
+    int subitem = colCount ? col + 1 : col;
     RECT rc;
-    ListView_GetSubItemRect(hwndList, item, col, LVIR_BOUNDS, &rc);
-    if ( !col && colCount > 1 )
-    {
-        // broken ListView_GetSubItemRect() returns the entire item rect for
-        // 0th subitem while we really need just the part for this column
-        RECT rc2;
-        ListView_GetSubItemRect(hwndList, item, 1, LVIR_BOUNDS, &rc2);
-
-        rc.right = rc2.left;
-        rc.left += 4;
-    }
-    else // not first subitem
-    {
-        rc.left += 6;
-    }
+    wxGetListCtrlSubItemRect(hwndList, item, subitem, LVIR_BOUNDS, rc);
+    rc.left += 6;
 
     // get the image and text to draw
     wxChar text[512];
@@ -2681,7 +2719,7 @@ static void HandleItemPaint(LPNMLVCUSTOMDRAW pLVCD, HFONT hfont)
 
     // same thing for CDIS_FOCUS (except simpler as there is only one of them)
     if ( ::GetFocus() == hwndList &&
-            ListView_GetNextItem(hwndList, (WPARAM)-1, LVNI_FOCUSED) == item )
+            ListView_GetNextItem(hwndList, -1, LVNI_FOCUSED) == item )
     {
         nmcd.uItemState |= CDIS_FOCUS;
     }
@@ -2806,10 +2844,10 @@ WXLPARAM wxListCtrl::OnCustomDraw(WXLPARAM lParam)
 // Necessary for drawing hrules and vrules, if specified
 void wxListCtrl::OnPaint(wxPaintEvent& event)
 {
-    bool drawHRules = HasFlag(wxLC_HRULES);
-    bool drawVRules = HasFlag(wxLC_VRULES);
+    const bool drawHRules = HasFlag(wxLC_HRULES);
+    const bool drawVRules = HasFlag(wxLC_VRULES);
 
-    if (!InReportView() || !drawHRules && !drawVRules)
+    if (!InReportView() || !(drawHRules || drawVRules))
     {
         event.Skip();
         return;