#define TVM_SETTEXTCOLOR (TV_FIRST + 30)
#endif
+// a macro to hide the ugliness of nested casts
+#define HITEM(item) (HTREEITEM)(WXHTREEITEM)(item)
+
+// the native control doesn't support multiple selections under MSW and we
+// have 2 ways to emulate them: either using TVS_CHECKBOXES style and let
+// checkboxes be the selection status (checked == selected) or by really
+// emulating everything, i.e. intercepting mouse and key events &c. The first
+// approach is much easier but doesn't work with comctl32.dll < 4.71 and also
+// looks quite ugly.
+#define wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE 0
+
+// from msw/window.cpp
+extern bool wxIsShiftDown();
+extern bool wxIsCtrlDown();
+
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+// wrapper for TreeView_HitTest
+static HTREEITEM GetItemFromPoint(HWND hwndTV, int x, int y)
+{
+ TV_HITTESTINFO tvht;
+ tvht.pt.x = x;
+ tvht.pt.y = y;
+
+ // TreeView_HitTest() doesn't do the right cast in mingw32 headers
+ return (HTREEITEM)TreeView_HitTest(hwndTV, &tvht);
+}
+
+#if !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+
+// wrappers for TreeView_GetItem/TreeView_SetItem
+static bool IsItemSelected(HWND hwndTV, HTREEITEM hItem)
+{
+ TV_ITEM tvi;
+ tvi.mask = TVIF_STATE | TVIF_HANDLE;
+ tvi.stateMask = TVIS_SELECTED;
+ tvi.hItem = hItem;
+
+ if ( !TreeView_GetItem(hwndTV, &tvi) )
+ {
+ wxLogLastError("TreeView_GetItem");
+ }
+
+ return (tvi.state & TVIS_SELECTED) != 0;
+}
+
+static void SelectItem(HWND hwndTV, HTREEITEM hItem, bool select = TRUE)
+{
+ TV_ITEM tvi;
+ tvi.mask = TVIF_STATE | TVIF_HANDLE;
+ tvi.stateMask = TVIS_SELECTED;
+ tvi.state = select ? TVIS_SELECTED : 0;
+ tvi.hItem = hItem;
+
+ if ( TreeView_SetItem(hwndTV, &tvi) == -1 )
+ {
+ wxLogLastError("TreeView_SetItem");
+ }
+}
+
+static inline void UnselectItem(HWND hwndTV, HTREEITEM htItem)
+{
+ SelectItem(hwndTV, htItem, FALSE);
+}
+
+static inline void ToggleItemSelection(HWND hwndTV, HTREEITEM htItem)
+{
+ SelectItem(hwndTV, htItem, !IsItemSelected(hwndTV, htItem));
+}
+
+// helper function which selects all items in a range and, optionally,
+// unselects all others
+static void SelectRange(HWND hwndTV,
+ HTREEITEM htFirst,
+ HTREEITEM htLast,
+ bool unselectOthers = TRUE)
+{
+ // find the first (or last) item and select it
+ bool cont = TRUE;
+ HTREEITEM htItem = TreeView_GetRoot(hwndTV);
+ while ( htItem && cont )
+ {
+ if ( (htItem == htFirst) || (htItem == htLast) )
+ {
+ if ( !IsItemSelected(hwndTV, htItem) )
+ {
+ SelectItem(hwndTV, htItem);
+ }
+
+ cont = FALSE;
+ }
+ else
+ {
+ if ( unselectOthers && IsItemSelected(hwndTV, htItem) )
+ {
+ UnselectItem(hwndTV, htItem);
+ }
+ }
+
+ htItem = TreeView_GetNextVisible(hwndTV, htItem);
+ }
+
+ // select the items in range
+ cont = htFirst != htLast;
+ while ( htItem && cont )
+ {
+ if ( !IsItemSelected(hwndTV, htItem) )
+ {
+ SelectItem(hwndTV, htItem);
+ }
+
+ cont = (htItem != htFirst) && (htItem != htLast);
+
+ htItem = TreeView_GetNextVisible(hwndTV, htItem);
+ }
+
+ // unselect the rest
+ if ( unselectOthers )
+ {
+ while ( htItem )
+ {
+ if ( IsItemSelected(hwndTV, htItem) )
+ {
+ UnselectItem(hwndTV, htItem);
+ }
+
+ htItem = TreeView_GetNextVisible(hwndTV, htItem);
+ }
+ }
+
+ // seems to be necessary - otherwise the just selected items don't always
+ // appear as selected
+ UpdateWindow(hwndTV);
+}
+
+// helper function which tricks the standard control into changing the focused
+// item without changing anything else (if someone knows why Microsoft doesn't
+// allow to do it by just setting TVIS_FOCUSED flag, please tell me!)
+static void SetFocus(HWND hwndTV, HTREEITEM htItem)
+{
+ // the current focus
+ HTREEITEM htFocus = TreeView_GetSelection(hwndTV);
+
+ if ( htItem )
+ {
+ // set the focus
+ if ( htItem != htFocus )
+ {
+ // remember the selection state of the item
+ bool wasSelected = IsItemSelected(hwndTV, htItem);
+
+ if ( htFocus && IsItemSelected(hwndTV, htFocus) )
+ {
+ // prevent the tree from unselecting the old focus which it
+ // would do by default (TreeView_SelectItem unselects the
+ // focused item)
+ TreeView_SelectItem(hwndTV, 0);
+ SelectItem(hwndTV, htFocus);
+ }
+
+ TreeView_SelectItem(hwndTV, htItem);
+
+ if ( !wasSelected )
+ {
+ // need to clear the selection which TreeView_SelectItem() gave
+ // us
+ UnselectItem(hwndTV, htItem);
+ }
+ //else: was selected, still selected - ok
+ }
+ //else: nothing to do, focus already there
+ }
+ else
+ {
+ if ( htFocus )
+ {
+ bool wasFocusSelected = IsItemSelected(hwndTV, htFocus);
+
+ // just clear the focus
+ TreeView_SelectItem(hwndTV, 0);
+
+ if ( wasFocusSelected )
+ {
+ // restore the selection state
+ SelectItem(hwndTV, htFocus);
+ }
+ }
+ //else: nothing to do, no focus already
+ }
+}
+
+#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
// a convenient wrapper around TV_ITEM struct which adds a ctor
#ifdef __VISUALC__
-#pragma warning( disable : 4097 )
+#pragma warning( disable : 4097 ) // inheriting from typedef
#endif
struct wxTreeViewItem : public TV_ITEM
// hItem member is always valid
mask = mask_ | TVIF_HANDLE;
stateMask = stateMask_;
- hItem = (HTREEITEM) (WXHTREEITEM) item;
+ hItem = HITEM(item);
}
};
virtual bool OnVisit(const wxTreeItemId& item)
{
+#if wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
if ( GetTree()->IsItemChecked(item) )
+#else
+ if ( ::IsItemSelected(GetHwndOf(GetTree()), HITEM(item)) )
+#endif
{
m_selections.Add(item);
}
};
// ----------------------------------------------------------------------------
-// private functions
-// ----------------------------------------------------------------------------
-
-static HTREEITEM GetItemFromPoint(HWND hwndTV, int x, int y)
-{
- TV_HITTESTINFO tvht;
- tvht.pt.x = x;
- tvht.pt.y = y;
-
- // TreeView_HitTest() doesn't do the right cast in mingw32 headers
- return (HTREEITEM)TreeView_HitTest(hwndTV, &tvht);
-}
-
-// ----------------------------------------------------------------------------
-// macros
+// wxWin macros
// ----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxControl)
m_textCtrl = NULL;
m_hasAnyAttr = FALSE;
m_dragImage = NULL;
+
+ m_htSelStart = 0;
}
bool wxTreeCtrl::Create(wxWindow *parent,
if ( m_windowStyle & wxTR_LINES_AT_ROOT )
wstyle |= TVS_LINESATROOT;
-#if !defined( __GNUWIN32_OLD__ ) && \
+ // using TVS_CHECKBOXES for emulation of a multiselection tree control
+ // doesn't work without the new enough headers
+#if wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE && \
+ !defined( __GNUWIN32_OLD__ ) && \
!defined( __BORLANDC__ ) && \
!defined( __WATCOMC__ ) && \
(!defined(__VISUALC__) || (__VISUALC__ > 1010))
// up the image list we need for this if we do have multiple selections
if ( m_windowStyle & wxTR_MULTIPLE )
wstyle |= TVS_CHECKBOXES;
-#endif
+#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
// Create the tree control.
if ( !MSWCreateControl(WC_TREEVIEW, wstyle) )
wxTreeItemId wxTreeCtrl::GetParent(const wxTreeItemId& item) const
{
- return wxTreeItemId((WXHTREEITEM) TreeView_GetParent(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
+ return wxTreeItemId((WXHTREEITEM) TreeView_GetParent(GetHwnd(), HITEM(item)));
}
wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item,
long& _cookie) const
{
// remember the last child returned in 'cookie'
- _cookie = (long)TreeView_GetChild(GetHwnd(), (HTREEITEM) (WXHTREEITEM)item);
+ _cookie = (long)TreeView_GetChild(GetHwnd(), HITEM(item));
return wxTreeItemId((WXHTREEITEM)_cookie);
}
long& _cookie) const
{
wxTreeItemId l = wxTreeItemId((WXHTREEITEM)TreeView_GetNextSibling(GetHwnd(),
- (HTREEITEM)(WXHTREEITEM)_cookie));
+ HITEM(_cookie)));
_cookie = (long)l;
return l;
wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
{
- return wxTreeItemId((WXHTREEITEM) TreeView_GetNextSibling(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
+ return wxTreeItemId((WXHTREEITEM) TreeView_GetNextSibling(GetHwnd(), HITEM(item)));
}
wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
{
- return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevSibling(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
+ return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevSibling(GetHwnd(), HITEM(item)));
}
wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const
wxASSERT_MSG( IsVisible(item), wxT("The item you call GetNextVisible() "
"for must be visible itself!"));
- return wxTreeItemId((WXHTREEITEM) TreeView_GetNextVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
+ return wxTreeItemId((WXHTREEITEM) TreeView_GetNextVisible(GetHwnd(), HITEM(item)));
}
wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
wxASSERT_MSG( IsVisible(item), wxT("The item you call GetPrevVisible() "
"for must be visible itself!"));
- return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
+ return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevVisible(GetHwnd(), HITEM(item)));
}
// ----------------------------------------------------------------------------
wxTreeItemData *data)
{
TV_INSERTSTRUCT tvIns;
- tvIns.hParent = (HTREEITEM) (WXHTREEITEM)parent;
- tvIns.hInsertAfter = (HTREEITEM) (WXHTREEITEM) hInsertAfter;
+ tvIns.hParent = HITEM(parent);
+ tvIns.hInsertAfter = HITEM(hInsertAfter);
// this is how we insert the item as the first child: supply a NULL
// hInsertAfter
void wxTreeCtrl::Delete(const wxTreeItemId& item)
{
- if ( !TreeView_DeleteItem(GetHwnd(), (HTREEITEM)(WXHTREEITEM)item) )
+ if ( !TreeView_DeleteItem(GetHwnd(), HITEM(item)) )
{
wxLogLastError("TreeView_DeleteItem");
}
tvItem.state = 0;
DoSetItem(&tvItem);
- if ( TreeView_Expand(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item, flag) != 0 )
+ if ( TreeView_Expand(GetHwnd(), HITEM(item), flag) != 0 )
{
wxTreeEvent event(wxEVT_NULL, m_windowId);
event.m_item = item;
void wxTreeCtrl::Unselect()
{
- wxASSERT_MSG( !(m_windowStyle & wxTR_MULTIPLE), wxT("doesn't make sense") );
+ wxASSERT_MSG( !(m_windowStyle & wxTR_MULTIPLE),
+ wxT("doesn't make sense, may be you want UnselectAll()?") );
// just remove the selection
SelectItem(wxTreeItemId((WXHTREEITEM) 0));
size_t count = GetSelections(selections);
for ( size_t n = 0; n < count; n++ )
{
+#if wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
SetItemCheck(selections[n], FALSE);
+#else // !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+ ::UnselectItem(GetHwnd(), HITEM(selections[n]));
+#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE/!wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
}
}
else
{
if ( m_windowStyle & wxTR_MULTIPLE )
{
+#if wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
// selecting the item means checking it
SetItemCheck(item);
+#else // !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+ ::SelectItem(GetHwnd(), HITEM(item));
+#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE/!wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
}
else
{
event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGING);
if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
{
- if ( !TreeView_SelectItem(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item) )
+ if ( !TreeView_SelectItem(GetHwnd(), HITEM(item)) )
{
wxLogLastError("TreeView_SelectItem");
}
void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
{
// no error return
- TreeView_EnsureVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item);
+ TreeView_EnsureVisible(GetHwnd(), HITEM(item));
}
void wxTreeCtrl::ScrollTo(const wxTreeItemId& item)
{
- if ( !TreeView_SelectSetFirstVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item) )
+ if ( !TreeView_SelectSetFirstVisible(GetHwnd(), HITEM(item)) )
{
wxLogLastError("TreeView_SelectSetFirstVisible");
}
DeleteTextCtrl();
- HWND hWnd = (HWND) TreeView_EditLabel(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item);
+ HWND hWnd = (HWND) TreeView_EditLabel(GetHwnd(), HITEM(item));
// this is not an error - the TVN_BEGINLABELEDIT handler might have
// returned FALSE
bool textOnly) const
{
RECT rc;
- if ( TreeView_GetItemRect(GetHwnd(), (HTREEITEM)(WXHTREEITEM)item,
+ if ( TreeView_GetItemRect(GetHwnd(), HITEM(item),
&rc, textOnly) )
{
rect = wxRect(wxPoint(rc.left, rc.top), wxPoint(rc.right, rc.bottom));
// directly if we're not in derived class (much more efficient!)
if ( GetClassInfo() == CLASSINFO(wxTreeCtrl) )
{
- TreeView_SortChildren(GetHwnd(), (HTREEITEM)(WXHTREEITEM)item, 0);
+ TreeView_SortChildren(GetHwnd(), HITEM(item), 0);
}
else
{
TV_SORTCB tvSort;
- tvSort.hParent = (HTREEITEM)(WXHTREEITEM)item;
+ tvSort.hParent = HITEM(item);
tvSort.lpfnCompare = (PFNTVCOMPARE)TreeView_CompareCallback;
tvSort.lParam = (LPARAM)this;
TreeView_SortChildrenCB(GetHwnd(), &tvSort, 0 /* reserved */);
// instead of passing by wxWin events
long wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
{
- if ( m_dragImage )
+ bool processed = FALSE;
+ long rc = 0;
+
+ bool isMultiple = (GetWindowStyle() & wxTR_MULTIPLE) != 0;
+
+ if ( (nMsg >= WM_MOUSEFIRST) && (nMsg <= WM_MOUSELAST) )
{
+ // we only process mouse messages here and these parameters have the same
+ // meaning for all of them
+ int x = GET_X_LPARAM(lParam),
+ y = GET_Y_LPARAM(lParam);
+ HTREEITEM htItem = GetItemFromPoint(GetHwnd(), x, y);
+
switch ( nMsg )
{
- case WM_MOUSEMOVE:
+#if !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+ case WM_LBUTTONDOWN:
+ if ( htItem && isMultiple )
{
- int x = GET_X_LPARAM(lParam),
- y = GET_Y_LPARAM(lParam);
+ if ( wParam & MK_CONTROL )
+ {
+ SetFocus();
- m_dragImage->Move(wxPoint(x, y), this);
+ // toggle selected state
+ ToggleItemSelection(GetHwnd(), htItem);
+
+ ::SetFocus(GetHwnd(), htItem);
+
+ // reset on any click without Shift
+ m_htSelStart = 0;
+
+ processed = TRUE;
+ }
+ else if ( wParam & MK_SHIFT )
+ {
+ // this selects all items between the starting one and
+ // the current
+
+ if ( !m_htSelStart )
+ {
+ // take the focused item
+ m_htSelStart = (WXHTREEITEM)
+ TreeView_GetSelection(GetHwnd());
+ }
+
+ SelectRange(GetHwnd(), HITEM(m_htSelStart), htItem,
+ !(wParam & MK_CONTROL));
- HTREEITEM htiTarget = GetItemFromPoint(GetHwnd(), x, y);
- if ( htiTarget )
+ ::SetFocus(GetHwnd(), htItem);
+
+ processed = TRUE;
+ }
+ else // normal click
+ {
+ // clear the selection and then let the default handler
+ // do the job
+ UnselectAll();
+
+ // prevent the click from starting in-place editing
+ // when there was no selection in the control
+ TreeView_SelectItem(GetHwnd(), 0);
+
+ // reset on any click without Shift
+ m_htSelStart = 0;
+ }
+ }
+ break;
+#endif // wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+
+ case WM_MOUSEMOVE:
+ if ( m_dragImage )
+ {
+ m_dragImage->Move(wxPoint(x, y), this);
+ if ( htItem )
{
// highlight the item as target (hiding drag image is
// necessary - otherwise the display will be corrupted)
m_dragImage->Hide(this);
- TreeView_SelectDropTarget(GetHwnd(), htiTarget);
+ TreeView_SelectDropTarget(GetHwnd(), htItem);
m_dragImage->Show(this);
}
}
case WM_LBUTTONUP:
case WM_RBUTTONUP:
+ if ( m_dragImage )
{
m_dragImage->EndDrag(this);
delete m_dragImage;
// generate the drag end event
wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, m_windowId);
- int x = GET_X_LPARAM(lParam),
- y = GET_Y_LPARAM(lParam);
-
- event.m_item
- = (WXHTREEITEM)GetItemFromPoint(GetHwnd(), x, y);
+ event.m_item = (WXHTREEITEM)htItem;
event.m_pointDrag = wxPoint(x, y);
event.SetEventObject(this);
break;
}
}
+#if !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+ else if ( (nMsg == WM_SETFOCUS || nMsg == WM_KILLFOCUS) && isMultiple )
+ {
+ // the tree control greys out the selected item when it loses focus and
+ // paints it as selected again when it regains it, but it won't do it
+ // for the other items itself - help it
+ wxArrayTreeItemIds selections;
+ size_t count = GetSelections(selections);
+ RECT rect;
+ for ( size_t n = 0; n < count; n++ )
+ {
+ // TreeView_GetItemRect() will return FALSE if item is not visible,
+ // which may happen perfectly well
+ if ( TreeView_GetItemRect(GetHwnd(), HITEM(selections[n]),
+ &rect, TRUE) )
+ {
+ ::InvalidateRect(GetHwnd(), &rect, FALSE);
+ }
+ }
+ }
+ else if ( nMsg == WM_KEYDOWN && isMultiple )
+ {
+ bool bCtrl = wxIsCtrlDown(),
+ bShift = wxIsShiftDown();
+
+ // we handle.arrows and space, but not page up/down and home/end: the
+ // latter should be easy, but not the former
+
+ HTREEITEM htSel = TreeView_GetSelection(GetHwnd());
+ if ( !m_htSelStart )
+ {
+ m_htSelStart = (WXHTREEITEM)htSel;
+ }
+
+ if ( wParam == VK_SPACE )
+ {
+ if ( bCtrl )
+ {
+ ToggleItemSelection(GetHwnd(), htSel);
+ }
+ else
+ {
+ UnselectAll();
+
+ ::SelectItem(GetHwnd(), htSel);
+ }
+
+ processed = TRUE;
+ }
+ else if ( wParam == VK_UP || wParam == VK_DOWN )
+ {
+ if ( !bCtrl && !bShift )
+ {
+ // no modifiers, just clear selection and then let the default
+ // processing to take place
+ UnselectAll();
+ }
+ else if ( htSel )
+ {
+ (void)wxControl::MSWWindowProc(nMsg, wParam, lParam);
+
+ HTREEITEM htNext =
+ wParam == VK_UP ? TreeView_GetPrevVisible(GetHwnd(), htSel)
+ : TreeView_GetNextVisible(GetHwnd(), htSel);
+
+ if ( !htNext )
+ {
+ // at the top/bottom
+ htNext = htSel;
+ }
+
+ if ( bShift )
+ {
+ SelectRange(GetHwnd(), HITEM(m_htSelStart), htNext);
+ }
+ else // bCtrl
+ {
+ // without changing selection
+ ::SetFocus(GetHwnd(), htNext);
+ }
+
+ processed = TRUE;
+ }
+ }
+ }
+#endif // !wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
+
+ if ( !processed )
+ rc = wxControl::MSWWindowProc(nMsg, wParam, lParam);
- return wxControl::MSWWindowProc(nMsg, wParam, lParam);
+ return rc;
}
// process WM_NOTIFY Windows message
event.m_code = wxCharCodeMSWToWX(info->wVKey);
- // a separate event for this case
- if ( info->wVKey == VK_SPACE || info->wVKey == VK_RETURN )
+ // a separate event for Space/Return
+ if ( !wxIsCtrlDown() && !wxIsShiftDown() &&
+ ((info->wVKey == VK_SPACE) || (info->wVKey == VK_RETURN)) )
{
wxTreeEvent event2(wxEVT_COMMAND_TREE_ITEM_ACTIVATED,
m_windowId);
event2.SetEventObject(this);
+ if ( !(GetWindowStyle() & wxTR_MULTIPLE) )
+ {
+ event2.m_item = GetSelection();
+ }
+ //else: don't know how to get it
- GetEventHandler()->ProcessEvent(event2);
+ (void)GetEventHandler()->ProcessEvent(event2);
}
}
break;
projects / wxWidgets.git / commitdiff
