X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/72e610241ac6fd8984de4c49f513ce15ff4144d9..fcdd53359135f790b85728c4254b97095a56dad8:/src/msw/treectrl.cpp diff --git a/src/msw/treectrl.cpp b/src/msw/treectrl.cpp index f314a7a873..7aa4079cf6 100644 --- a/src/msw/treectrl.cpp +++ b/src/msw/treectrl.cpp @@ -52,6 +52,59 @@ // get HTREEITEM from wxTreeItemId #define HITEM(item) ((HTREEITEM)(((item).m_pItem))) + +// older SDKs are missing these +#ifndef TVN_ITEMCHANGINGA + +#define TVN_ITEMCHANGINGA (TVN_FIRST-16) +#define TVN_ITEMCHANGINGW (TVN_FIRST-17) + +typedef struct tagNMTVITEMCHANGE +{ + NMHDR hdr; + UINT uChanged; + HTREEITEM hItem; + UINT uStateNew; + UINT uStateOld; + LPARAM lParam; +} NMTVITEMCHANGE; + +#endif + + +// this helper class is used on vista systems for preventing unwanted +// item state changes in the vista tree control. It is only effective in +// multi-select mode on vista systems. + +// The vista tree control includes some new code that originally broke the +// multi-selection tree, causing seemingly spurious item selection state changes +// during Shift or Ctrl-click item selection. (To witness the original broken +// behavior, simply make IsLocked() below always return false). This problem was +// solved by using the following class to 'unlock' an item's selection state. + +class TreeItemUnlocker +{ +public: + // unlock a single item + TreeItemUnlocker(HTREEITEM item) { ms_unlockedItem = item; } + + // unlock all items, don't use unless absolutely necessary + TreeItemUnlocker() { ms_unlockedItem = (HTREEITEM)-1; } + + // lock everything back + ~TreeItemUnlocker() { ms_unlockedItem = NULL; } + + + // check if the item state is currently locked + static bool IsLocked(HTREEITEM item) + { return ms_unlockedItem != (HTREEITEM)-1 && item != ms_unlockedItem; } + +private: + static HTREEITEM ms_unlockedItem; +}; + +HTREEITEM TreeItemUnlocker::ms_unlockedItem = NULL; + // ---------------------------------------------------------------------------- // private functions // ---------------------------------------------------------------------------- @@ -65,6 +118,8 @@ static bool IsItemSelected(HWND hwndTV, HTREEITEM hItem) tvi.stateMask = TVIS_SELECTED; tvi.hItem = hItem; + TreeItemUnlocker unlocker(hItem); + if ( !TreeView_GetItem(hwndTV, &tvi) ) { wxLogLastError(wxT("TreeView_GetItem")); @@ -81,6 +136,8 @@ static bool SelectItem(HWND hwndTV, HTREEITEM hItem, bool select = true) tvi.state = select ? TVIS_SELECTED : 0; tvi.hItem = hItem; + TreeItemUnlocker unlocker(hItem); + if ( TreeView_SetItem(hwndTV, &tvi) == -1 ) { wxLogLastError(wxT("TreeView_SetItem")); @@ -95,11 +152,6 @@ 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, @@ -168,57 +220,56 @@ static void SelectRange(HWND 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) +// +// returns true if the focus was changed, false if the given item was already +// the focused one +static bool SetFocus(HWND hwndTV, HTREEITEM htItem) { // the current focus HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(hwndTV); + if ( htItem == htFocus ) + return false; + if ( htItem ) { - // set the focus - if ( htItem != htFocus ) - { - // remember the selection state of the item - bool wasSelected = IsItemSelected(hwndTV, htItem); + // 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); - } + 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); + 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 + if ( !wasSelected ) + { + // need to clear the selection which TreeView_SelectItem() gave + // us + UnselectItem(hwndTV, htItem); } - //else: nothing to do, focus already there + //else: was selected, still selected - ok } - else + else // reset focus { - if ( htFocus ) - { - bool wasFocusSelected = IsItemSelected(hwndTV, htFocus); + bool wasFocusSelected = IsItemSelected(hwndTV, htFocus); - // just clear the focus - TreeView_SelectItem(hwndTV, 0); + // just clear the focus + TreeView_SelectItem(hwndTV, 0); - if ( wasFocusSelected ) - { - // restore the selection state - SelectItem(hwndTV, htFocus); - } + if ( wasFocusSelected ) + { + // restore the selection state + SelectItem(hwndTV, htFocus); } - //else: nothing to do, no focus already } + + return true; } // ---------------------------------------------------------------------------- @@ -526,7 +577,9 @@ wxBEGIN_FLAGS( wxTreeCtrlStyle ) wxFLAGS_MEMBER(wxTR_HAS_VARIABLE_ROW_HEIGHT) wxFLAGS_MEMBER(wxTR_SINGLE) wxFLAGS_MEMBER(wxTR_MULTIPLE) +#if WXWIN_COMPATIBILITY_2_8 wxFLAGS_MEMBER(wxTR_EXTENDED) +#endif wxFLAGS_MEMBER(wxTR_DEFAULT_STYLE) wxEND_FLAGS( wxTreeCtrlStyle ) @@ -622,7 +675,9 @@ void wxTreeCtrl::Init() { m_textCtrl = NULL; m_hasAnyAttr = false; +#if wxUSE_DRAGIMAGE m_dragImage = NULL; +#endif m_pVirtualRoot = NULL; // initialize the global array of events now as it can't be done statically @@ -696,58 +751,6 @@ bool wxTreeCtrl::Create(wxWindow *parent, SetForegroundColour(wxWindow::GetParent()->GetForegroundColour()); #endif - - // VZ: this is some experimental code which may be used to get the - // TVS_CHECKBOXES style functionality for comctl32.dll < 4.71. - // AFAIK, the standard DLL does about the same thing anyhow. -#if 0 - if ( m_windowStyle & wxTR_MULTIPLE ) - { - wxBitmap bmp; - - // create the DC compatible with the current screen - HDC hdcMem = CreateCompatibleDC(NULL); - - // create a mono bitmap of the standard size - int x = ::GetSystemMetrics(SM_CXMENUCHECK); - int y = ::GetSystemMetrics(SM_CYMENUCHECK); - wxImageList imagelistCheckboxes(x, y, false, 2); - HBITMAP hbmpCheck = CreateBitmap(x, y, // bitmap size - 1, // # of color planes - 1, // # bits needed for one pixel - 0); // array containing colour data - SelectObject(hdcMem, hbmpCheck); - - // then draw a check mark into it - RECT rect = { 0, 0, x, y }; - if ( !::DrawFrameControl(hdcMem, &rect, - DFC_BUTTON, - DFCS_BUTTONCHECK | DFCS_CHECKED) ) - { - wxLogLastError(wxT("DrawFrameControl(check)")); - } - - bmp.SetHBITMAP((WXHBITMAP)hbmpCheck); - imagelistCheckboxes.Add(bmp); - - if ( !::DrawFrameControl(hdcMem, &rect, - DFC_BUTTON, - DFCS_BUTTONCHECK) ) - { - wxLogLastError(wxT("DrawFrameControl(uncheck)")); - } - - bmp.SetHBITMAP((WXHBITMAP)hbmpCheck); - imagelistCheckboxes.Add(bmp); - - // clean up - ::DeleteDC(hdcMem); - - // set the imagelist - SetStateImageList(&imagelistCheckboxes); - } -#endif // 0 - wxSetCCUnicodeFormat(GetHwnd()); return true; @@ -806,6 +809,8 @@ bool wxTreeCtrl::DoGetItem(wxTreeViewItem *tvItem) const void wxTreeCtrl::DoSetItem(wxTreeViewItem *tvItem) { + TreeItemUnlocker unlocker(tvItem->hItem); + if ( TreeView_SetItem(GetHwnd(), tvItem) == -1 ) { wxLogLastError(wxT("TreeView_SetItem")); @@ -923,7 +928,7 @@ void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text) return; wxTreeViewItem tvItem(item, TVIF_TEXT); - tvItem.pszText = (wxChar *)text.c_str(); // conversion is ok + tvItem.pszText = (wxChar *)text.wx_str(); // conversion is ok DoSetItem(&tvItem); // when setting the text of the item being edited, the text control should @@ -936,7 +941,7 @@ void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text) { if ( item == m_idEdited ) { - ::SetWindowText(hwndEdit, text); + ::SetWindowText(hwndEdit, text.wx_str()); } } } @@ -1316,36 +1321,6 @@ wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item), return item; } -#if WXWIN_COMPATIBILITY_2_4 - -wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item, - long& cookie) const -{ - wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); - - cookie = (long)TreeView_GetChild(GetHwnd(), HITEM(item)); - - return wxTreeItemId((void *)cookie); -} - -wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item), - long& cookie) const -{ - wxTreeItemId fromCookie((void *)cookie); - - HTREEITEM hitem = HITEM(fromCookie); - - hitem = TreeView_GetNextSibling(GetHwnd(), hitem); - - wxTreeItemId item(hitem); - - cookie = (long)item.m_pItem; - - return item; -} - -#endif // WXWIN_COMPATIBILITY_2_4 - wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const { wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); @@ -1386,7 +1361,15 @@ wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); wxASSERT_MSG( IsVisible(item), wxT("The item you call GetNextVisible() for must be visible itself!")); - return wxTreeItemId(TreeView_GetNextVisible(GetHwnd(), HITEM(item))); + wxTreeItemId next(TreeView_GetNextVisible(GetHwnd(), HITEM(item))); + if ( next.IsOk() && !IsVisible(next) ) + { + // Win32 considers that any non-collapsed item is visible while we want + // to return only really visible items + next.Unset(); + } + + return next; } wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const @@ -1394,40 +1377,21 @@ wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); wxASSERT_MSG( IsVisible(item), wxT("The item you call GetPrevVisible() for must be visible itself!")); - return wxTreeItemId(TreeView_GetPrevVisible(GetHwnd(), HITEM(item))); + wxTreeItemId prev(TreeView_GetPrevVisible(GetHwnd(), HITEM(item))); + if ( prev.IsOk() && !IsVisible(prev) ) + { + // just as above, Win32 function will happily return the previous item + // in the tree for the first visible item too + prev.Unset(); + } + + return prev; } // ---------------------------------------------------------------------------- // multiple selections emulation // ---------------------------------------------------------------------------- -bool wxTreeCtrl::IsItemChecked(const wxTreeItemId& item) const -{ - wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") ); - - // receive the desired information. - wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK); - DoGetItem(&tvItem); - - // state image indices are 1 based - return ((tvItem.state >> 12) - 1) == 1; -} - -void wxTreeCtrl::SetItemCheck(const wxTreeItemId& item, bool check) -{ - wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); - - // receive the desired information. - wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK); - - DoGetItem(&tvItem); - - // state images are one-based - tvItem.state = (check ? 2 : 1) << 12; - - DoSetItem(&tvItem); -} - size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds& selections) const { TraverseSelections selector(this, selections); @@ -1464,7 +1428,7 @@ wxTreeItemId wxTreeCtrl::DoInsertAfter(const wxTreeItemId& parent, if ( !text.empty() ) { mask |= TVIF_TEXT; - tvIns.item.pszText = (wxChar *)text.c_str(); // cast is ok + tvIns.item.pszText = (wxChar *)text.wx_str(); // cast is ok } else { @@ -1488,12 +1452,27 @@ wxTreeItemId wxTreeCtrl::DoInsertAfter(const wxTreeItemId& parent, tvIns.item.lParam = (LPARAM)param; tvIns.item.mask = mask; + // don't use the hack below for the children of hidden root: this results + // in a crash inside comctl32.dll when we call TreeView_GetItemRect() + const bool firstChild = !IsHiddenRoot(parent) && + !TreeView_GetChild(GetHwnd(), HITEM(parent)); + HTREEITEM id = TreeView_InsertItem(GetHwnd(), &tvIns); if ( id == 0 ) { wxLogLastError(wxT("TreeView_InsertItem")); } + // apparently some Windows versions (2000 and XP are reported to do this) + // sometimes don't refresh the tree after adding the first child and so we + // need this to make the "[+]" appear + if ( firstChild ) + { + RECT rect; + TreeView_GetItemRect(GetHwnd(), HITEM(parent), &rect, FALSE); + ::InvalidateRect(GetHwnd(), &rect, FALSE); + } + // associate the application tree item with Win32 tree item handle param->SetItem(id); @@ -1507,33 +1486,14 @@ wxTreeItemId wxTreeCtrl::DoInsertAfter(const wxTreeItemId& parent, return wxTreeItemId(id); } -// for compatibility only -#if WXWIN_COMPATIBILITY_2_4 - -void wxTreeCtrl::SetImageList(wxImageList *imageList, int) -{ - SetImageList(imageList); -} - -int wxTreeCtrl::GetItemSelectedImage(const wxTreeItemId& item) const -{ - return GetItemImage(item, wxTreeItemIcon_Selected); -} - -void wxTreeCtrl::SetItemSelectedImage(const wxTreeItemId& item, int image) -{ - SetItemImage(item, image, wxTreeItemIcon_Selected); -} - -#endif // WXWIN_COMPATIBILITY_2_4 - wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text, int image, int selectedImage, wxTreeItemData *data) { - if ( HasFlag(wxTR_HIDE_ROOT) ) { + wxASSERT_MSG( !m_pVirtualRoot, _T("tree can have only a single root") ); + // create a virtual root item, the parent for all the others wxTreeItemParam *param = new wxTreeItemParam; param->SetData(data); @@ -1581,6 +1541,10 @@ wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent, void wxTreeCtrl::Delete(const wxTreeItemId& item) { + // unlock tree selections on vista, without this the + // tree ctrl will eventually crash after item deletion + TreeItemUnlocker unlock_all; + if ( !TreeView_DeleteItem(GetHwnd(), HITEM(item)) ) { wxLogLastError(wxT("TreeView_DeleteItem")); @@ -1590,6 +1554,9 @@ void wxTreeCtrl::Delete(const wxTreeItemId& item) // delete all children (but don't delete the item itself) void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item) { + // unlock tree selections on vista for the duration of this call + TreeItemUnlocker unlock_all; + wxTreeItemIdValue cookie; wxArrayTreeItemIds children; @@ -1613,6 +1580,9 @@ void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item) void wxTreeCtrl::DeleteAllItems() { + // unlock tree selections on vista for the duration of this call + TreeItemUnlocker unlock_all; + // delete the "virtual" root item. if ( GET_VIRTUAL_ROOT() ) { @@ -1660,7 +1630,7 @@ void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag) : IDX_COLLAPSE] [IDX_DONE], this, item); - (void)GetEventHandler()->ProcessEvent(event); + (void)HandleWindowEvent(event); } //else: change didn't took place, so do nothing at all } @@ -1685,15 +1655,6 @@ void wxTreeCtrl::Toggle(const wxTreeItemId& item) DoExpand(item, TVE_TOGGLE); } -#if WXWIN_COMPATIBILITY_2_4 - -void wxTreeCtrl::ExpandItem(const wxTreeItemId& item, int action) -{ - DoExpand(item, action); -} - -#endif - void wxTreeCtrl::Unselect() { wxASSERT_MSG( !(m_windowStyle & wxTR_MULTIPLE), @@ -1725,34 +1686,36 @@ void wxTreeCtrl::UnselectAll() void wxTreeCtrl::SelectItem(const wxTreeItemId& item, bool select) { - if ( m_windowStyle & wxTR_MULTIPLE ) - { - ::SelectItem(GetHwnd(), HITEM(item), select); - } - else - { - wxASSERT_MSG( select, - _T("SelectItem(false) works only for multiselect") ); + wxCHECK_RET( !IsHiddenRoot(item), _T("can't select hidden root item") ); - // inspite of the docs (MSDN Jan 99 edition), we don't seem to receive - // the notification from the control (i.e. TVN_SELCHANG{ED|ING}), so - // send them ourselves + wxASSERT_MSG( select || HasFlag(wxTR_MULTIPLE), + _T("SelectItem(false) works only for multiselect") ); - wxTreeEvent event(wxEVT_COMMAND_TREE_SEL_CHANGING, this, item); - if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() ) + wxTreeEvent event(wxEVT_COMMAND_TREE_SEL_CHANGING, this, item); + if ( !HandleWindowEvent(event) || event.IsAllowed() ) + { + if ( HasFlag(wxTR_MULTIPLE) ) { - if ( !TreeView_SelectItem(GetHwnd(), HITEM(item)) ) + if ( !::SelectItem(GetHwnd(), HITEM(item), select) ) { wxLogLastError(wxT("TreeView_SelectItem")); + return; } - else // ok + } + else // single selection + { + // use TreeView_SelectItem() to deselect the previous selection + if ( !TreeView_SelectItem(GetHwnd(), HITEM(item)) ) { - event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED); - (void)GetEventHandler()->ProcessEvent(event); + wxLogLastError(wxT("TreeView_SelectItem")); + return; } } - //else: program vetoed the change + + event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED); + (void)HandleWindowEvent(event); } + //else: program vetoed the change } void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item) @@ -1950,7 +1913,9 @@ bool wxTreeCtrl::MSWShouldPreProcessMessage(WXMSG* msg) { if ( msg->message == WM_KEYDOWN ) { - if ( msg->wParam == VK_RETURN ) + // Only eat VK_RETURN if not being used by the application in + // conjunction with modifiers + if ( (msg->wParam == VK_RETURN) && !wxIsAnyModifierDown() ) { // we need VK_RETURN to generate wxEVT_COMMAND_TREE_ITEM_ACTIVATED return false; @@ -1960,8 +1925,10 @@ bool wxTreeCtrl::MSWShouldPreProcessMessage(WXMSG* msg) return wxTreeCtrlBase::MSWShouldPreProcessMessage(msg); } -bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id) +bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id_) { + const int id = (signed short)id_; + if ( cmd == EN_UPDATE ) { wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, id); @@ -2039,7 +2006,7 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara event.m_pointDrag = pt; - if ( GetEventHandler()->ProcessEvent(event) ) + if ( HandleWindowEvent(event) ) processed = true; //else: continue with generating wxEVT_CONTEXT_MENU in base class code } @@ -2069,7 +2036,7 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara SetFocus(); // toggle selected state - ::ToggleItemSelection(GetHwnd(), htItem); + ToggleItemSelection(htItem); ::SetFocus(GetHwnd(), htItem); @@ -2132,6 +2099,14 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara ::SetFocus(GetHwnd(), htItem); processed = true; } + else // click on a single selected item + { + // don't interfere with the default processing in + // WM_MOUSEMOVE handler below as the default window + // proc will start the drag itself if we let have + // WM_LBUTTONDOWN + m_htClickedItem.Unset(); + } // reset on any click without Shift m_htSelStart.Unset(); @@ -2139,6 +2114,38 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara } break; + case WM_RBUTTONDOWN: + // default handler removes the highlight from the currently + // focused item when right mouse button is pressed on another + // one but keeps the remaining items highlighted, which is + // confusing, so override this default behaviour for tree with + // multiple selections + if ( isMultiple ) + { + if ( !IsItemSelected(GetHwnd(), htItem) ) + { + UnselectAll(); + SelectItem(htItem); + ::SetFocus(GetHwnd(), htItem); + } + + // fire EVT_RIGHT_DOWN + HandleMouseEvent(nMsg, x, y, wParam); + + // send NM_RCLICK + NMHDR nmhdr; + nmhdr.hwndFrom = GetHwnd(); + nmhdr.idFrom = ::GetWindowLong(GetHwnd(), GWL_ID); + nmhdr.code = NM_RCLICK; + ::SendMessage(::GetParent(GetHwnd()), WM_NOTIFY, + nmhdr.idFrom, (LPARAM)&nmhdr); + + // prevent tree control default processing, as we've + // already done everything + processed = true; + } + break; + case WM_MOUSEMOVE: #ifndef __WXWINCE__ if ( m_htClickedItem ) @@ -2146,39 +2153,49 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara int cx = abs(m_ptClick.x - x); int cy = abs(m_ptClick.y - y); - if ( cx > GetSystemMetrics( SM_CXDRAG ) || cy > GetSystemMetrics( SM_CYDRAG ) ) + if ( cx > ::GetSystemMetrics(SM_CXDRAG) || + cy > ::GetSystemMetrics(SM_CYDRAG) ) { - HWND pWnd = ::GetParent( GetHwnd() ); - if ( pWnd ) - { - NM_TREEVIEW tv; + NM_TREEVIEW tv; + wxZeroMemory(tv); - tv.hdr.hwndFrom = GetHwnd(); - tv.hdr.idFrom = ::GetWindowLong( GetHwnd(), GWL_ID ); - tv.hdr.code = TVN_BEGINDRAG; + tv.hdr.hwndFrom = GetHwnd(); + tv.hdr.idFrom = ::GetWindowLong(GetHwnd(), GWL_ID); + tv.hdr.code = TVN_BEGINDRAG; - tv.itemNew.hItem = HITEM(m_htClickedItem); + tv.itemNew.hItem = HITEM(m_htClickedItem); - TVITEM tviAux; - ZeroMemory(&tviAux, sizeof(tviAux)); - tviAux.hItem = HITEM(m_htClickedItem); - tviAux.mask = TVIF_STATE | TVIF_PARAM; - tviAux.stateMask = 0xffffffff; - TreeView_GetItem( GetHwnd(), &tviAux ); - tv.itemNew.state = tviAux.state; - tv.itemNew.lParam = tviAux.lParam; + TVITEM tviAux; + wxZeroMemory(tviAux); - tv.ptDrag.x = x; - tv.ptDrag.y = y; + tviAux.hItem = HITEM(m_htClickedItem); + tviAux.mask = TVIF_STATE | TVIF_PARAM; + tviAux.stateMask = 0xffffffff; + TreeView_GetItem(GetHwnd(), &tviAux); - ::SendMessage( pWnd, WM_NOTIFY, tv.hdr.idFrom, (LPARAM)&tv ); - } + tv.itemNew.state = tviAux.state; + tv.itemNew.lParam = tviAux.lParam; + + tv.ptDrag.x = x; + tv.ptDrag.y = y; + + // do it before SendMessage() call below to avoid + // reentrancies here if there is another WM_MOUSEMOVE + // in the queue already m_htClickedItem.Unset(); + + ::SendMessage(GetHwndOf(GetParent()), WM_NOTIFY, + tv.hdr.idFrom, (LPARAM)&tv ); + + // don't pass it to the default window proc, it would + // start dragging again + processed = true; } } #endif // __WXWINCE__ +#if wxUSE_DRAGIMAGE if ( m_dragImage ) { m_dragImage->Move(wxPoint(x, y)); @@ -2191,6 +2208,7 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara m_dragImage->Show(); } } +#endif // wxUSE_DRAGIMAGE break; case WM_LBUTTONUP: @@ -2216,6 +2234,7 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara // fall through case WM_RBUTTONUP: +#if wxUSE_DRAGIMAGE if ( m_dragImage ) { m_dragImage->EndDrag(); @@ -2226,12 +2245,13 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, this, htItem); event.m_pointDrag = wxPoint(x, y); - (void)GetEventHandler()->ProcessEvent(event); + (void)HandleWindowEvent(event); // if we don't do it, the tree seems to think that 2 items // are selected simultaneously which is quite weird TreeView_SelectDropTarget(GetHwnd(), 0); } +#endif // wxUSE_DRAGIMAGE break; } } @@ -2265,7 +2285,7 @@ WXLRESULT wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara case VK_SPACE: if ( bCtrl ) { - ::ToggleItemSelection(GetHwnd(), htSel); + ToggleItemSelection(htSel); } else { @@ -2372,6 +2392,24 @@ wxTreeCtrl::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) if ( wParam == VK_SPACE || wParam == VK_RETURN ) return 0; } +#if wxUSE_DRAGIMAGE + else if ( nMsg == WM_KEYDOWN ) + { + if ( wParam == VK_ESCAPE ) + { + if ( m_dragImage ) + { + m_dragImage->EndDrag(); + delete m_dragImage; + m_dragImage = NULL; + + // if we don't do it, the tree seems to think that 2 items + // are selected simultaneously which is quite weird + TreeView_SelectDropTarget(GetHwnd(), 0); + } + } + } +#endif // wxUSE_DRAGIMAGE return wxControl::MSWDefWindowProc(nMsg, wParam, lParam); } @@ -2532,8 +2570,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) // fabricate the lParam and wParam parameters sufficiently // similar to the ones from a "real" WM_KEYDOWN so that // CreateKeyEvent() works correctly - const bool isAltDown = ::GetKeyState(VK_MENU) < 0; - WXLPARAM lParam = (isAltDown ? KF_ALTDOWN : 0) << 16; + WXLPARAM lParam = (wxIsAltDown() ? KF_ALTDOWN : 0) << 16; WXWPARAM wParam = info->wVKey; @@ -2551,7 +2588,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) wParam); // a separate event for Space/Return - if ( !wxIsCtrlDown() && !wxIsShiftDown() && !isAltDown && + if ( !wxIsAnyModifierDown() && ((info->wVKey == VK_SPACE) || (info->wVKey == VK_RETURN)) ) { wxTreeItemId item; @@ -2560,11 +2597,42 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) wxTreeEvent event2(wxEVT_COMMAND_TREE_ITEM_ACTIVATED, this, item); - (void)GetEventHandler()->ProcessEvent(event2); + (void)HandleWindowEvent(event2); } } break; + + // Vista's tree control has introduced some problems with our + // multi-selection tree. When TreeView_SelectItem() is called, + // the wrong items are deselected. + + // Fortunately, Vista provides a new notification, TVN_ITEMCHANGING + // that can be used to regulate this incorrect behavior. The + // following messages will allow only the unlocked item's selection + // state to change + + case TVN_ITEMCHANGINGA: + case TVN_ITEMCHANGINGW: + { + // we only need to handles these in multi-select trees + if ( HasFlag(wxTR_MULTIPLE) ) + { + // get info about the item about to be changed + NMTVITEMCHANGE* info = (NMTVITEMCHANGE*)lParam; + if (TreeItemUnlocker::IsLocked(info->hItem)) + { + // item's state is locked, don't allow the change + // returning 1 will disallow the change + *result = 1; + return true; + } + } + + // allow the state change + } + return false; + // NB: MSLU is broken and sends TVN_SELCHANGEDA instead of // TVN_SELCHANGEDW in Unicode mode under Win98. Therefore // we have to handle both messages: @@ -2594,6 +2662,19 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) event.m_itemOld = tv->itemOld.hItem; } } + + // we receive this message from WM_LBUTTONDOWN handler inside + // comctl32.dll and so before the click is passed to + // DefWindowProc() which sets the focus to the window which was + // clicked and this can lead to unexpected event sequences: for + // example, we may get a "selection change" event from the tree + // before getting a "kill focus" event for the text control which + // had the focus previously, thus breaking user code doing input + // validation + // + // to avoid such surprises, we force the generation of focus events + // now, before we generate the selection change ones + SetFocus(); break; // instead of explicitly checking for _WIN32_IE, check if the @@ -2610,6 +2691,43 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) // notify us before painting each item *result = m_hasAnyAttr ? CDRF_NOTIFYITEMDRAW : CDRF_DODEFAULT; + + // windows in TreeCtrl use one-based index for item state images, + // 0 indexed image is not being used, we're using zero-based index, + // so we have to add temp image (of zero index) to state image list + // before we draw any item, then after items are drawn we have to + // delete it (in POSTPAINT notify) + if (m_imageListState && m_imageListState->GetImageCount() > 0) + { + #define hImageList (HIMAGELIST)m_imageListState->GetHIMAGELIST() + + // add temporary image + int width, height; + m_imageListState->GetSize(0, width, height); + + HBITMAP hbmpTemp = ::CreateBitmap(width, height, 1, 1, NULL); + int index = ::ImageList_Add(hImageList, hbmpTemp, hbmpTemp); + ::DeleteObject(hbmpTemp); + + if ( index != -1 ) + { + // move images to right + for ( int i = index; i > 0; i-- ) + ::ImageList_Copy(hImageList, i, hImageList, i-1, 0); + + // we must remove the image in POSTPAINT notify + *result |= CDRF_NOTIFYPOSTPAINT; + } + + #undef hImageList + } + break; + + case CDDS_POSTPAINT: + // we are deleting temp image of 0 index, which was + // added before items were drawn (in PREPAINT notify) + if (m_imageListState && m_imageListState->GetImageCount() > 0) + m_imageListState->Remove(0); break; case CDDS_ITEMPREPAINT: @@ -2734,17 +2852,18 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) if ( event.m_item.IsOk() ) event.SetClientObject(GetItemData(event.m_item)); - bool processed = GetEventHandler()->ProcessEvent(event); + bool processed = HandleWindowEvent(event); // post processing switch ( hdr->code ) { case NM_DBLCLK: - // we translate NM_DBLCLK into ACTIVATED event, so don't interpret - // the return code of this event handler as the return value for - // NM_DBLCLK - otherwise, double clicking the item to toggle its - // expanded status would never work - *result = false; + // we translate NM_DBLCLK into ACTIVATED event and if the user + // handled the activation of the item we shouldn't proceed with + // also using the same double click for toggling the item expanded + // state -- but OTOH do let the user to expand/collapse the item by + // double clicking on it if the activation is not handled specially + *result = processed; break; case NM_RCLICK: @@ -2760,6 +2879,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) case TVN_BEGINDRAG: case TVN_BEGINRDRAG: +#if wxUSE_DRAGIMAGE if ( event.IsAllowed() ) { // normally this is impossible because the m_dragImage is @@ -2770,6 +2890,7 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) m_dragImage->BeginDrag(wxPoint(0,0), this); m_dragImage->Show(); } +#endif // wxUSE_DRAGIMAGE break; case TVN_DELETEITEM: @@ -2858,17 +2979,40 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) break; case TVN_ITEMEXPANDED: - // the item is not refreshed properly after expansion when it has - // an image depending on the expanded/collapsed state - bug in - // comctl32.dll or our code? { NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam; - wxTreeItemId id(tv->itemNew.hItem); + const wxTreeItemId id(tv->itemNew.hItem); - int image = GetItemImage(id, wxTreeItemIcon_Expanded); - if ( image != -1 ) + if ( tv->action == TVE_COLLAPSE ) + { + if ( wxApp::GetComCtl32Version() >= 600 ) + { + // for some reason the item selection rectangle depends + // on whether it is expanded or collapsed (at least + // with comctl32.dll v6): it is wider (by 3 pixels) in + // the expanded state, so when the item collapses and + // then is deselected the rightmost 3 pixels of the + // previously drawn selection are left on the screen + // + // it's not clear if it's a bug in comctl32.dll or in + // our code (because it does not happen in Explorer but + // OTOH we don't do anything which could result in this + // AFAICS) but we do need to work around it to avoid + // ugly artifacts + RefreshItem(id); + } + } + else // expand { - RefreshItem(id); + // the item is also not refreshed properly after expansion when + // it has an image depending on the expanded/collapsed state: + // again, it's not clear if the bug is in comctl32.dll or our + // code... + int image = GetItemImage(id, wxTreeItemIcon_Expanded); + if ( image != -1 ) + { + RefreshItem(id); + } } } break; @@ -2920,40 +3064,29 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) // why do they define INDEXTOSTATEIMAGEMASK but not the inverse? #define STATEIMAGEMASKTOINDEX(state) (((state) & TVIS_STATEIMAGEMASK) >> 12) -void wxTreeCtrl::SetState(const wxTreeItemId& node, int state) +int wxTreeCtrl::DoGetItemState(const wxTreeItemId& item) const { - TV_ITEM tvi; - tvi.hItem = (HTREEITEM)node.m_pItem; - tvi.mask = TVIF_STATE; - tvi.stateMask = TVIS_STATEIMAGEMASK; - - // Select the specified state, or -1 == cycle to the next one. - if ( state == -1 ) - { - TreeView_GetItem(GetHwnd(), &tvi); - - state = STATEIMAGEMASKTOINDEX(tvi.state) + 1; - if ( state == m_imageListState->GetImageCount() ) - state = 1; - } - - wxCHECK_RET( state < m_imageListState->GetImageCount(), - _T("wxTreeCtrl::SetState(): item index out of bounds") ); + wxCHECK_MSG( item.IsOk(), wxTREE_ITEMSTATE_NONE, wxT("invalid tree item") ); - tvi.state = INDEXTOSTATEIMAGEMASK(state); + // receive the desired information + wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK); + DoGetItem(&tvItem); - TreeView_SetItem(GetHwnd(), &tvi); + // state images are one-based + return STATEIMAGEMASKTOINDEX(tvItem.state) - 1; } -int wxTreeCtrl::GetState(const wxTreeItemId& node) +void wxTreeCtrl::DoSetItemState(const wxTreeItemId& item, int state) { - TV_ITEM tvi; - tvi.hItem = (HTREEITEM)node.m_pItem; - tvi.mask = TVIF_STATE; - tvi.stateMask = TVIS_STATEIMAGEMASK; - TreeView_GetItem(GetHwnd(), &tvi); + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); + + wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK); - return STATEIMAGEMASKTOINDEX(tvi.state); + // state images are one-based + // 0 if no state image display (wxTREE_ITEMSTATE_NONE = -1) + tvItem.state = INDEXTOSTATEIMAGEMASK(state + 1); + + DoSetItem(&tvItem); } #endif // wxUSE_TREECTRL