X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/067e9be6852644c258627eb745643f8efd711e60..4f082fb3a0685321b174f8b7beb8ea357da227a2:/src/msw/listbox.cpp diff --git a/src/msw/listbox.cpp b/src/msw/listbox.cpp index 8a6382e8b0..9f9720f39a 100644 --- a/src/msw/listbox.cpp +++ b/src/msw/listbox.cpp @@ -9,10 +9,6 @@ // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #pragma implementation "listbox.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -22,56 +18,28 @@ #if wxUSE_LISTBOX -#ifndef WX_PRECOMP #include "wx/listbox.h" -#include "wx/settings.h" -#include "wx/brush.h" -#include "wx/font.h" -#include "wx/dc.h" -#include "wx/utils.h" + +#ifndef WX_PRECOMP + #include "wx/dynarray.h" + #include "wx/settings.h" + #include "wx/brush.h" + #include "wx/font.h" + #include "wx/dc.h" + #include "wx/utils.h" + #include "wx/log.h" + #include "wx/window.h" #endif -#include "wx/window.h" #include "wx/msw/private.h" +#include "wx/msw/dc.h" #include -#include "wx/dynarray.h" -#include "wx/log.h" - #if wxUSE_OWNER_DRAWN #include "wx/ownerdrw.h" #endif -#ifdef __GNUWIN32_OLD__ - #include "wx/msw/gnuwin32/extra.h" -#endif - -#if wxUSE_EXTENDED_RTTI -IMPLEMENT_DYNAMIC_CLASS_XTI(wxListBox, wxControl,"wx/listbox.h") - -WX_BEGIN_PROPERTIES_TABLE(wxListBox) - // TODO DELEGATES - WX_PROPERTY( Font , wxFont , SetFont , GetFont , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) - WX_PROPERTY_COLLECTION( Choices , wxArrayString , wxString , AppendString , GetStrings, 0 /*flags*/ , wxT("Helpstring") , wxT("group") ) - WX_PROPERTY( Selection ,int, SetSelection, GetSelection,, 0 /*flags*/ , wxT("Helpstring") , wxT("group") ) -WX_END_PROPERTIES_TABLE() - -WX_BEGIN_HANDLERS_TABLE(wxListBox) -WX_END_HANDLERS_TABLE() - -WX_CONSTRUCTOR_4( wxListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size ) -#else -IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl) -#endif - -/* -TODO PROPERTIES - selection - content - item -*/ - // ============================================================================ // list box item declaration and implementation // ============================================================================ @@ -81,18 +49,25 @@ TODO PROPERTIES class wxListBoxItem : public wxOwnerDrawn { public: - wxListBoxItem(const wxString& str = wxEmptyString); -}; + wxListBoxItem(wxListBox *parent) + { m_parent = parent; } -wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, FALSE) -{ - // no bitmaps/checkmarks - SetMarginWidth(0); -} + wxListBox *GetParent() const + { return m_parent; } + + int GetIndex() const + { return m_parent->GetItemIndex(const_cast(this)); } + + wxString GetName() const + { return m_parent->GetString(GetIndex()); } + +private: + wxListBox *m_parent; +}; wxOwnerDrawn *wxListBox::CreateLboxItem(size_t WXUNUSED(n)) { - return new wxListBoxItem(); + return new wxListBoxItem(this); } #endif //USE_OWNER_DRAWN @@ -105,11 +80,10 @@ wxOwnerDrawn *wxListBox::CreateLboxItem(size_t WXUNUSED(n)) // creation // ---------------------------------------------------------------------------- -// Listbox item -wxListBox::wxListBox() +void wxListBox::Init() { m_noItems = 0; - m_selected = 0; + m_updateHorizontalExtent = false; } bool wxListBox::Create(wxWindow *parent, @@ -121,102 +95,120 @@ bool wxListBox::Create(wxWindow *parent, const wxValidator& validator, const wxString& name) { - m_noItems = 0; - m_hWnd = 0; - m_selected = 0; - - SetName(name); -#if wxUSE_VALIDATORS - SetValidator(validator); -#endif // wxUSE_VALIDATORS - - if (parent) - parent->AddChild(this); - - SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW)); - SetForegroundColour(parent->GetForegroundColour()); + // initialize base class fields + if ( !CreateControl(parent, id, pos, size, style, validator, name) ) + return false; - m_windowId = ( id == -1 ) ? (int)NewControlId() : id; - - int x = pos.x; - int y = pos.y; - int width = size.x; - int height = size.y; - m_windowStyle = style; - - DWORD wstyle = WS_VISIBLE | WS_CHILD | WS_VSCROLL | WS_TABSTOP | - LBS_NOTIFY | LBS_HASSTRINGS ; + // create the native control + if ( !MSWCreateControl(wxT("LISTBOX"), wxEmptyString, pos, size) ) + { + // control creation failed + return false; + } - wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED), - _T("only one of listbox selection modes can be specified") ); + // initialize the contents + for ( int i = 0; i < n; i++ ) + { + Append(choices[i]); + } - if ( (m_windowStyle & wxBORDER_MASK) == wxBORDER_DEFAULT ) - m_windowStyle |= wxBORDER_SUNKEN; + // now we can compute our best size correctly, so do it again + SetInitialSize(size); - if ( m_windowStyle & wxCLIP_SIBLINGS ) - wstyle |= WS_CLIPSIBLINGS; + return true; +} - if (m_windowStyle & wxLB_MULTIPLE) - wstyle |= LBS_MULTIPLESEL; - else if (m_windowStyle & wxLB_EXTENDED) - wstyle |= LBS_EXTENDEDSEL; +bool wxListBox::Create(wxWindow *parent, + wxWindowID id, + const wxPoint& pos, + const wxSize& size, + const wxArrayString& choices, + long style, + const wxValidator& validator, + const wxString& name) +{ + wxCArrayString chs(choices); + return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(), + style, validator, name); +} - if (m_windowStyle & wxLB_ALWAYS_SB) - wstyle |= LBS_DISABLENOSCROLL; - if (m_windowStyle & wxLB_HSCROLL) - wstyle |= WS_HSCROLL; - if (m_windowStyle & wxLB_SORT) - wstyle |= LBS_SORT; +wxListBox::~wxListBox() +{ + Clear(); +} -#if wxUSE_OWNER_DRAWN && !defined(__WXWINCE__) - if ( m_windowStyle & wxLB_OWNERDRAW ) { - // we don't support LBS_OWNERDRAWVARIABLE yet - wstyle |= LBS_OWNERDRAWFIXED; - } -#endif +WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const +{ + WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle); - // Without this style, you get unexpected heights, so e.g. constraint layout - // doesn't work properly - wstyle |= LBS_NOINTEGRALHEIGHT; + // we always want to get the notifications + msStyle |= LBS_NOTIFY; - WXDWORD exStyle = 0; - (void) MSWGetStyle(m_windowStyle, & exStyle) ; + // without this style, you get unexpected heights, so e.g. constraint + // layout doesn't work properly + msStyle |= LBS_NOINTEGRALHEIGHT; - m_hWnd = (WXHWND)::CreateWindowEx(exStyle, wxT("LISTBOX"), NULL, - wstyle , - 0, 0, 0, 0, - (HWND)parent->GetHWND(), (HMENU)m_windowId, - wxGetInstance(), NULL); + wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED), + wxT("only one of listbox selection modes can be specified") ); - wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create listbox") ); + if ( style & wxLB_MULTIPLE ) + msStyle |= LBS_MULTIPLESEL; + else if ( style & wxLB_EXTENDED ) + msStyle |= LBS_EXTENDEDSEL; - // Subclass again to catch messages - SubclassWin(m_hWnd); + wxASSERT_MSG( !(style & wxLB_ALWAYS_SB) || !(style & wxLB_NO_SB), + wxT( "Conflicting styles wxLB_ALWAYS_SB and wxLB_NO_SB." ) ); - size_t ui; - for (ui = 0; ui < (size_t)n; ui++) { - Append(choices[ui]); + if ( !(style & wxLB_NO_SB) ) + { + msStyle |= WS_VSCROLL; + if ( style & wxLB_ALWAYS_SB ) + msStyle |= LBS_DISABLENOSCROLL; } - if ( (m_windowStyle & wxLB_MULTIPLE) == 0 ) - SendMessage(GetHwnd(), LB_SETCURSEL, 0, 0); + if ( m_windowStyle & wxLB_HSCROLL ) + msStyle |= WS_HSCROLL; + if ( m_windowStyle & wxLB_SORT ) + msStyle |= LBS_SORT; - SetFont(parent->GetFont()); - - SetSize(x, y, width, height); +#if wxUSE_OWNER_DRAWN && !defined(__WXWINCE__) + if ( m_windowStyle & wxLB_OWNERDRAW ) + { + // we don't support LBS_OWNERDRAWVARIABLE yet and we also always put + // the strings in the listbox for simplicity even though we could have + // avoided it in this case + msStyle |= LBS_OWNERDRAWFIXED | LBS_HASSTRINGS; + } +#endif // wxUSE_OWNER_DRAWN - return TRUE; + return msStyle; } -wxListBox::~wxListBox() +void wxListBox::OnInternalIdle() { - Free(); + wxWindow::OnInternalIdle(); + + if (m_updateHorizontalExtent) + { + SetHorizontalExtent(wxEmptyString); + m_updateHorizontalExtent = false; + } } -void wxListBox::SetupColours() +void wxListBox::MSWOnItemsChanged() { - SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW)); - SetForegroundColour(GetParent()->GetForegroundColour()); + // we need to do two things when items change: update their max horizontal + // extent so that horizontal scrollbar could be shown or hidden as + // appropriate and also invlaidate the best size + // + // updating the max extent is slow (it's an O(N) operation) and so we defer + // it until the idle time but the best size should be invalidated + // immediately doing it in idle time is too late -- layout using incorrect + // old best size will have been already done by then + + m_updateHorizontalExtent = true; + + InvalidateBestSize(); } // ---------------------------------------------------------------------------- @@ -225,193 +217,111 @@ void wxListBox::SetupColours() void wxListBox::DoSetFirstItem(int N) { - wxCHECK_RET( N >= 0 && N < m_noItems, + wxCHECK_RET( IsValid(N), wxT("invalid index in wxListBox::SetFirstItem") ); SendMessage(GetHwnd(), LB_SETTOPINDEX, (WPARAM)N, (LPARAM)0); } -void wxListBox::Delete(int N) +void wxListBox::DoDeleteOneItem(unsigned int n) { - wxCHECK_RET( N >= 0 && N < m_noItems, + wxCHECK_RET( IsValid(n), wxT("invalid index in wxListBox::Delete") ); - // for owner drawn objects, the data is used for storing wxOwnerDrawn - // pointers and we shouldn't touch it -#if !wxUSE_OWNER_DRAWN - if ( !(m_windowStyle & wxLB_OWNERDRAW) ) -#endif // !wxUSE_OWNER_DRAWN - if ( HasClientObjectData() ) - { - delete GetClientObject(N); - } - - SendMessage(GetHwnd(), LB_DELETESTRING, N, 0); - m_noItems--; - - SetHorizontalExtent(wxEmptyString); -} - -int wxListBox::DoAppend(const wxString& item) -{ - int index = ListBox_AddString(GetHwnd(), item); - m_noItems++; - #if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) { - wxOwnerDrawn *pNewItem = CreateLboxItem(index); // dummy argument - pNewItem->SetName(item); - m_aItems.Insert(pNewItem, index); - ListBox_SetItemData(GetHwnd(), index, pNewItem); - pNewItem->SetFont(GetFont()); - } -#endif // wxUSE_OWNER_DRAWN - - SetHorizontalExtent(item); - - return index; -} - -void wxListBox::DoSetItems(const wxArrayString& choices, void** clientData) -{ - // avoid flicker - but don't need to do this for a hidden listbox - bool hideAndShow = IsShown(); - if ( hideAndShow ) + if ( HasFlag(wxLB_OWNERDRAW) ) { - ShowWindow(GetHwnd(), SW_HIDE); - } - - ListBox_ResetContent(GetHwnd()); - - m_noItems = choices.GetCount(); - int i; - for (i = 0; i < m_noItems; i++) - { - ListBox_AddString(GetHwnd(), choices[i]); - if ( clientData ) - { - SetClientData(i, clientData[i]); - } - } - -#if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) { - // first delete old items - WX_CLEAR_ARRAY(m_aItems); - - // then create new ones - for ( size_t ui = 0; ui < (size_t)m_noItems; ui++ ) { - wxOwnerDrawn *pNewItem = CreateLboxItem(ui); - pNewItem->SetName(choices[ui]); - m_aItems.Add(pNewItem); - ListBox_SetItemData(GetHwnd(), ui, pNewItem); - } + delete m_aItems[n]; + m_aItems.RemoveAt(n); } #endif // wxUSE_OWNER_DRAWN - SetHorizontalExtent(); + SendMessage(GetHwnd(), LB_DELETESTRING, n, 0); + m_noItems--; - if ( hideAndShow ) - { - // show the listbox back if we hid it - ShowWindow(GetHwnd(), SW_SHOW); - } + MSWOnItemsChanged(); + + UpdateOldSelections(); } -int wxListBox::FindString(const wxString& s) const +int wxListBox::FindString(const wxString& s, bool bCase) const { - int pos = ListBox_FindStringExact(GetHwnd(), (WPARAM)-1, s); + // back to base class search for not native search type + if (bCase) + return wxItemContainerImmutable::FindString( s, bCase ); + + int pos = ListBox_FindStringExact(GetHwnd(), -1, s.t_str()); if (pos == LB_ERR) return wxNOT_FOUND; else return pos; } -void wxListBox::Clear() -{ - Free(); - - ListBox_ResetContent(GetHwnd()); - - m_noItems = 0; - SetHorizontalExtent(); -} - -void wxListBox::Free() +void wxListBox::DoClear() { #if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) + if ( HasFlag(wxLB_OWNERDRAW) ) { WX_CLEAR_ARRAY(m_aItems); } - else #endif // wxUSE_OWNER_DRAWN - if ( HasClientObjectData() ) - { - for ( size_t n = 0; n < (size_t)m_noItems; n++ ) - { - delete GetClientObject(n); - } - } + + ListBox_ResetContent(GetHwnd()); + + m_noItems = 0; + MSWOnItemsChanged(); + + UpdateOldSelections(); } -void wxListBox::SetSelection(int N, bool select) +void wxListBox::DoSetSelection(int N, bool select) { - wxCHECK_RET( N >= 0 && N < m_noItems, + wxCHECK_RET( N == wxNOT_FOUND || IsValid(N), wxT("invalid index in wxListBox::SetSelection") ); if ( HasMultipleSelection() ) { - SendMessage(GetHwnd(), LB_SETSEL, select, N); + // Setting selection to -1 should deselect everything. + const bool deselectAll = N == wxNOT_FOUND; + SendMessage(GetHwnd(), LB_SETSEL, + deselectAll ? FALSE : select, + deselectAll ? -1 : N); } else { SendMessage(GetHwnd(), LB_SETCURSEL, select ? N : -1, 0); } + + UpdateOldSelections(); } bool wxListBox::IsSelected(int N) const { - wxCHECK_MSG( N >= 0 && N < m_noItems, FALSE, + wxCHECK_MSG( IsValid(N), false, wxT("invalid index in wxListBox::Selected") ); - return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? FALSE : TRUE; -} - -wxClientData* wxListBox::DoGetItemClientObject(int n) const -{ - return (wxClientData *)DoGetItemClientData(n); + return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? false : true; } -void *wxListBox::DoGetItemClientData(int n) const +void *wxListBox::DoGetItemClientData(unsigned int n) const { - wxCHECK_MSG( n >= 0 && n < m_noItems, NULL, - wxT("invalid index in wxListBox::GetClientData") ); + LPARAM rc = SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0); + if ( rc == LB_ERR && GetLastError() != ERROR_SUCCESS ) + { + wxLogLastError(wxT("LB_GETITEMDATA")); - return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0); -} + return NULL; + } -void wxListBox::DoSetItemClientObject(int n, wxClientData* clientData) -{ - DoSetItemClientData(n, clientData); + return (void *)rc; } -void wxListBox::DoSetItemClientData(int n, void *clientData) +void wxListBox::DoSetItemClientData(unsigned int n, void *clientData) { - wxCHECK_RET( n >= 0 && n < m_noItems, - wxT("invalid index in wxListBox::SetClientData") ); - -#if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) - { - // client data must be pointer to wxOwnerDrawn, otherwise we would crash - // in OnMeasure/OnDraw. - wxFAIL_MSG(wxT("Can't use client data with owner-drawn listboxes")); - } -#endif // wxUSE_OWNER_DRAWN - if ( ListBox_SetItemData(GetHwnd(), n, clientData) == LB_ERR ) + { wxLogDebug(wxT("LB_SETITEMDATA failed")); + } } // Return number of selections and an array of selected integers @@ -424,7 +334,7 @@ int wxListBox::GetSelections(wxArrayInt& aSelections) const int countSel = ListBox_GetSelCount(GetHwnd()); if ( countSel == LB_ERR ) { - wxLogDebug(_T("ListBox_GetSelCount failed")); + wxLogDebug(wxT("ListBox_GetSelCount failed")); } else if ( countSel != 0 ) { @@ -468,170 +378,176 @@ int wxListBox::GetSelection() const } // Find string for position -wxString wxListBox::GetString(int N) const +wxString wxListBox::GetString(unsigned int n) const { - wxCHECK_MSG( N >= 0 && N < m_noItems, wxEmptyString, - wxT("invalid index in wxListBox::GetClientData") ); + wxCHECK_MSG( IsValid(n), wxEmptyString, + wxT("invalid index in wxListBox::GetString") ); - int len = ListBox_GetTextLen(GetHwnd(), N); + int len = ListBox_GetTextLen(GetHwnd(), n); // +1 for terminating NUL wxString result; - ListBox_GetText(GetHwnd(), N, wxStringBuffer(result, len + 1)); + ListBox_GetText(GetHwnd(), n, (wxChar*)wxStringBuffer(result, len + 1)); return result; } -void -wxListBox::DoInsertItems(const wxArrayString& items, int pos) +int wxListBox::DoInsertItems(const wxArrayStringsAdapter & items, + unsigned int pos, + void **clientData, + wxClientDataType type) { - wxCHECK_RET( pos >= 0 && pos <= m_noItems, - wxT("invalid index in wxListBox::InsertItems") ); + MSWAllocStorage(items, LB_INITSTORAGE); + + const bool append = pos == GetCount(); + + // we must use CB_ADDSTRING when appending as only it works correctly for + // the sorted controls + const unsigned msg = append ? LB_ADDSTRING : LB_INSERTSTRING; - int nItems = items.GetCount(); - for ( int i = 0; i < nItems; i++ ) + if ( append ) + pos = 0; + + int n = wxNOT_FOUND; + + const unsigned int numItems = items.GetCount(); + for ( unsigned int i = 0; i < numItems; i++ ) { - int idx = ListBox_InsertString(GetHwnd(), i + pos, items[i]); + n = MSWInsertOrAppendItem(pos, items[i], msg); + if ( n == wxNOT_FOUND ) + return n; + + if ( !append ) + pos++; + + ++m_noItems; #if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) + if ( HasFlag(wxLB_OWNERDRAW) ) { - wxOwnerDrawn *pNewItem = CreateLboxItem(idx); - pNewItem->SetName(items[i]); + wxOwnerDrawn *pNewItem = CreateLboxItem(n); pNewItem->SetFont(GetFont()); - m_aItems.Insert(pNewItem, idx); - - ListBox_SetItemData(GetHwnd(), idx, pNewItem); + m_aItems.Insert(pNewItem, n); } #endif // wxUSE_OWNER_DRAWN + AssignNewItemClientData(n, clientData, i, type); } - m_noItems += nItems; + MSWOnItemsChanged(); + + UpdateOldSelections(); - SetHorizontalExtent(); + return n; } -void wxListBox::SetString(int N, const wxString& s) +int wxListBox::DoHitTestList(const wxPoint& point) const { - wxCHECK_RET( N >= 0 && N < m_noItems, + LRESULT lRes = ::SendMessage(GetHwnd(), LB_ITEMFROMPOINT, + 0, MAKELPARAM(point.x, point.y)); + + // non zero high-order word means that this item is outside of the client + // area, IOW the point is outside of the listbox + return HIWORD(lRes) ? wxNOT_FOUND : LOWORD(lRes); +} + +void wxListBox::SetString(unsigned int n, const wxString& s) +{ + wxCHECK_RET( IsValid(n), wxT("invalid index in wxListBox::SetString") ); // remember the state of the item - bool wasSelected = IsSelected(N); + bool wasSelected = IsSelected(n); void *oldData = NULL; wxClientData *oldObjData = NULL; - if ( m_clientDataItemsType == wxClientData_Void ) - oldData = GetClientData(N); - else if ( m_clientDataItemsType == wxClientData_Object ) - oldObjData = GetClientObject(N); + if ( HasClientUntypedData() ) + oldData = GetClientData(n); + else if ( HasClientObjectData() ) + oldObjData = GetClientObject(n); // delete and recreate it - SendMessage(GetHwnd(), LB_DELETESTRING, N, 0); + SendMessage(GetHwnd(), LB_DELETESTRING, n, 0); - int newN = N; - if ( N == m_noItems - 1 ) + int newN = n; + if ( n == (m_noItems - 1) ) newN = -1; - ListBox_InsertString(GetHwnd(), newN, s); + ListBox_InsertString(GetHwnd(), newN, s.t_str()); // restore the client data if ( oldData ) - SetClientData(N, oldData); + SetClientData(n, oldData); else if ( oldObjData ) - SetClientObject(N, oldObjData); + SetClientObject(n, oldObjData); // we may have lost the selection if ( wasSelected ) - Select(N); - -#if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) - { - // update item's text - m_aItems[N]->SetName(s); + Select(n); - // reassign the item's data - ListBox_SetItemData(GetHwnd(), N, m_aItems[N]); - } -#endif //USE_OWNER_DRAWN + MSWOnItemsChanged(); } -int wxListBox::GetCount() const +unsigned int wxListBox::GetCount() const { return m_noItems; } // ---------------------------------------------------------------------------- -// helpers +// size-related stuff // ---------------------------------------------------------------------------- -// Windows-specific code to set the horizontal extent of the listbox, if -// necessary. If s is non-NULL, it's used to calculate the horizontal extent. -// Otherwise, all strings are used. void wxListBox::SetHorizontalExtent(const wxString& s) { - // Only necessary if we want a horizontal scrollbar - if (!(m_windowStyle & wxHSCROLL)) + // the rest is only necessary if we want a horizontal scrollbar + if ( !HasFlag(wxHSCROLL) ) return; - TEXTMETRIC lpTextMetric; - if ( !s.IsEmpty() ) - { - int existingExtent = (int)SendMessage(GetHwnd(), LB_GETHORIZONTALEXTENT, 0, 0L); - HDC dc = GetWindowDC(GetHwnd()); - HFONT oldFont = 0; - if (GetFont().Ok() && GetFont().GetResourceHandle()) - oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle()); - - GetTextMetrics(dc, &lpTextMetric); - SIZE extentXY; - ::GetTextExtentPoint(dc, (LPTSTR) (const wxChar *)s, s.Length(), &extentXY); - int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth); - if (oldFont) - ::SelectObject(dc, oldFont); + WindowHDC dc(GetHwnd()); + SelectInHDC selFont(dc, GetHfontOf(GetFont())); - ReleaseDC(GetHwnd(), dc); - if (extentX > existingExtent) - SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(extentX), 0L); - } - else - { - int largestExtent = 0; - HDC dc = GetWindowDC(GetHwnd()); - HFONT oldFont = 0; - if (GetFont().Ok() && GetFont().GetResourceHandle()) - oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle()); + TEXTMETRIC lpTextMetric; + ::GetTextMetrics(dc, &lpTextMetric); - GetTextMetrics(dc, &lpTextMetric); + int largestExtent = 0; + SIZE extentXY; - // FIXME: buffer overflow!! - wxChar buf[1024]; - for (int i = 0; i < m_noItems; i++) + if ( s.empty() ) + { + // set extent to the max length of all strings + for ( unsigned int i = 0; i < m_noItems; i++ ) { - int len = (int)SendMessage(GetHwnd(), LB_GETTEXT, i, (LPARAM)buf); - buf[len] = 0; - SIZE extentXY; - ::GetTextExtentPoint(dc, buf, len, &extentXY); + const wxString str = GetString(i); + ::GetTextExtentPoint32(dc, str.c_str(), str.length(), &extentXY); + int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth); - if (extentX > largestExtent) + if ( extentX > largestExtent ) largestExtent = extentX; } - if (oldFont) - ::SelectObject(dc, oldFont); + } + else // just increase the extent to the length of this string + { + int existingExtent = (int)SendMessage(GetHwnd(), + LB_GETHORIZONTALEXTENT, 0, 0L); - ReleaseDC(GetHwnd(), dc); - SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L); + ::GetTextExtentPoint32(dc, s.c_str(), s.length(), &extentXY); + + int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth); + if ( extentX > existingExtent ) + largestExtent = extentX; } + + if ( largestExtent ) + SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L); + //else: it shouldn't change } -wxSize wxListBox::DoGetBestSize() const +wxSize wxListBox::DoGetBestClientSize() const { // find the widest string int wLine; int wListbox = 0; - for ( int i = 0; i < m_noItems; i++ ) + for (unsigned int i = 0; i < m_noItems; i++) { wxString str(GetString(i)); GetTextExtent(str, &wLine, NULL); @@ -645,14 +561,14 @@ wxSize wxListBox::DoGetBestSize() const wListbox = 100; // the listbox should be slightly larger than the widest string - int cx, cy; - wxGetCharSize(GetHWND(), &cx, &cy, &GetFont()); + wListbox += 3*GetCharWidth(); - wListbox += 3*cx; + // add room for the scrollbar + wListbox += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X); // don't make the listbox too tall (limit height to 10 items) but don't // make it too small neither - int hListbox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)* + int hListbox = SendMessage(GetHwnd(), LB_GETITEMHEIGHT, 0, 0)* wxMin(wxMax(m_noItems, 3), 10); return wxSize(wListbox, hListbox); @@ -667,51 +583,110 @@ bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) wxEventType evtType; if ( param == LBN_SELCHANGE ) { + if ( HasMultipleSelection() ) + return CalcAndSendEvent(); + evtType = wxEVT_COMMAND_LISTBOX_SELECTED; } else if ( param == LBN_DBLCLK ) { + // Clicking under the last item in the listbox generates double click + // event for the currently selected item which is rather surprising. + // Avoid the surprise by checking that we do have an item under mouse. + const DWORD pos = ::GetMessagePos(); + const wxPoint pt(GET_X_LPARAM(pos), GET_Y_LPARAM(pos)); + if ( HitTest(ScreenToClient(pt)) == wxNOT_FOUND ) + return false; + evtType = wxEVT_COMMAND_LISTBOX_DOUBLECLICKED; } else { // some event we're not interested in - return FALSE; + return false; } - wxCommandEvent event(evtType, m_windowId); - event.SetEventObject( this ); + const int n = ListBox_GetCurSel(GetHwnd()); - // retrieve the affected item - int n = SendMessage(GetHwnd(), LB_GETCARETINDEX, 0, 0); - if ( n != LB_ERR ) - { - if ( HasClientObjectData() ) - event.SetClientObject( GetClientObject(n) ); - else if ( HasClientUntypedData() ) - event.SetClientData( GetClientData(n) ); + // We get events even when mouse is clicked outside of any valid item from + // Windows, just ignore them. + if ( n == wxNOT_FOUND ) + return false; - event.SetString( GetString(n) ); - event.SetExtraLong( HasMultipleSelection() ? IsSelected(n) : TRUE ); + if ( param == LBN_SELCHANGE ) + { + if ( !DoChangeSingleSelection(n) ) + return false; } - event.m_commandInt = n; - - return GetEventHandler()->ProcessEvent(event); + // Do generate an event otherwise. + return SendEvent(evtType, n, true /* selection */); } // ---------------------------------------------------------------------------- -// wxCheckListBox support +// owner-drawn list boxes support // ---------------------------------------------------------------------------- #if wxUSE_OWNER_DRAWN +// misc overloaded methods +// ----------------------- + +bool wxListBox::SetFont(const wxFont &font) +{ + if ( HasFlag(wxLB_OWNERDRAW) ) + { + const unsigned count = m_aItems.GetCount(); + for ( unsigned i = 0; i < count; i++ ) + m_aItems[i]->SetFont(font); + } + + wxListBoxBase::SetFont(font); + + return true; +} + +bool wxListBox::GetItemRect(size_t n, wxRect& rect) const +{ + wxCHECK_MSG( IsValid(n), false, + wxT("invalid index in wxListBox::GetItemRect") ); + + RECT rc; + + if ( ListBox_GetItemRect(GetHwnd(), n, &rc) != LB_ERR ) + { + rect = wxRectFromRECT(rc); + return true; + } + else + { + // couldn't retrieve rect: for example, item isn't visible + return false; + } +} + +bool wxListBox::RefreshItem(size_t n) +{ + wxRect rect; + if ( !GetItemRect(n, rect) ) + return false; + + RECT rc; + wxCopyRectToRECT(rect, rc); + + return ::InvalidateRect((HWND)GetHWND(), &rc, FALSE) == TRUE; +} + + // drawing // ------- -// space beneath/above each row in pixels -// "standard" checklistbox use 1 here, some might prefer 2. 0 is ugly. -#define OWNER_DRAWN_LISTBOX_EXTRA_SPACE (1) +namespace +{ + // space beneath/above each row in pixels + static const int LISTBOX_EXTRA_SPACE = 1; + +} // anonymous namespace // the height is the same for all items // TODO should be changed for LBS_OWNERDRAWVARIABLE style listboxes @@ -721,7 +696,7 @@ bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item) { // only owner-drawn control should receive this message - wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE ); + wxCHECK( HasFlag(wxLB_OWNERDRAW), false ); MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item; @@ -731,46 +706,42 @@ bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item) HDC hdc = CreateIC(wxT("DISPLAY"), NULL, NULL, 0); #endif - wxDC dc; - dc.SetHDC((WXHDC)hdc); - dc.SetFont(wxSystemSettings::GetFont(wxSYS_ANSI_VAR_FONT)); - - pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE; - pStruct->itemWidth = dc.GetCharWidth(); + { + wxDCTemp dc((WXHDC)hdc); + dc.SetFont(GetFont()); - dc.SetHDC(0); + pStruct->itemHeight = dc.GetCharHeight() + 2 * LISTBOX_EXTRA_SPACE; + pStruct->itemWidth = dc.GetCharWidth(); + } +#ifdef __WXWINCE__ + ReleaseDC(NULL, hdc); +#else DeleteDC(hdc); +#endif - return TRUE; + return true; } // forward the message to the appropriate item bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item) { // only owner-drawn control should receive this message - wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE ); + wxCHECK( HasFlag(wxLB_OWNERDRAW), false ); DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item; - UINT itemID = pStruct->itemID; // the item may be -1 for an empty listbox - if ( itemID == (UINT)-1 ) - return FALSE; - - long data = ListBox_GetItemData(GetHwnd(), pStruct->itemID); - - wxCHECK( data && (data != LB_ERR), FALSE ); + if ( pStruct->itemID == (UINT)-1 ) + return false; - wxListBoxItem *pItem = (wxListBoxItem *)data; + wxListBoxItem *pItem = (wxListBoxItem *)m_aItems[pStruct->itemID]; wxDCTemp dc((WXHDC)pStruct->hDC); - wxRect rect(wxPoint(pStruct->rcItem.left, pStruct->rcItem.top), - wxPoint(pStruct->rcItem.right, pStruct->rcItem.bottom)); - return pItem->OnDrawItem(dc, rect, + return pItem->OnDrawItem(dc, wxRectFromRECT(pStruct->rcItem), (wxOwnerDrawn::wxODAction)pStruct->itemAction, - (wxOwnerDrawn::wxODStatus)pStruct->itemState); + (wxOwnerDrawn::wxODStatus)(pStruct->itemState | wxOwnerDrawn::wxODHidePrefix)); } #endif // wxUSE_OWNER_DRAWN