X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/57c208c5759da71a637f0f0f5b7d3dc3eda09c02..b404a8f3b072129c107c6d9a5e0f6f53cd34807b:/src/msw/listbox.cpp?ds=sidebyside diff --git a/src/msw/listbox.cpp b/src/msw/listbox.cpp index 29eda8f233..69565096f7 100644 --- a/src/msw/listbox.cpp +++ b/src/msw/listbox.cpp @@ -1,57 +1,43 @@ /////////////////////////////////////////////////////////////////////////////// -// Name: listbox.cpp +// Name: src/msw/listbox.cpp // Purpose: wxListBox // Author: Julian Smart // Modified by: Vadim Zeitlin (owner drawn stuff) -// Created: +// Created: // RCS-ID: $Id$ // Copyright: (c) Julian Smart -// Licence: wxWindows license +// Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "listbox.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif -#ifndef WX_PRECOMP +#if wxUSE_LISTBOX + #include "wx/listbox.h" -#include "wx/settings.h" -#include "wx/brush.h" -#include "wx/font.h" -#include "wx/dc.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/msw/private.h" +#include "wx/msw/dc.h" -#include #include -#ifndef __TWIN32__ -#ifdef __GNUWIN32__ -#include -#endif -#endif - -#ifdef GetCharWidth -#undef GetCharWidth -#endif - #if wxUSE_OWNER_DRAWN - #include "wx/ownerdrw.h" -#endif - -#include "wx/dynarray.h" -#include "wx/log.h" - -#if !USE_SHARED_LIBRARY - IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl) + #include "wx/ownerdrw.h" #endif // ============================================================================ @@ -63,18 +49,25 @@ class wxListBoxItem : public wxOwnerDrawn { public: - wxListBoxItem(const wxString& str = ""); -}; + 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)); } -wxOwnerDrawn *wxListBox::CreateItem(size_t n) + 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 @@ -83,744 +76,693 @@ wxOwnerDrawn *wxListBox::CreateItem(size_t n) // list box control implementation // ============================================================================ -// this macro is dangerous but still better than tons of (HWND)GetHWND() -#define hwnd (HWND)GetHWND() +// ---------------------------------------------------------------------------- +// creation +// ---------------------------------------------------------------------------- -bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) +void wxListBox::Init() { -/* - if (param == LBN_SELCANCEL) - { - event.extraLong = FALSE; - } -*/ - if (param == LBN_SELCHANGE) - { - wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, m_windowId); - wxArrayInt aSelections; - int count = GetSelections(aSelections); - if ( count > 0 ) - { - event.m_commandInt = aSelections[0] ; - event.m_clientData = GetClientData(event.m_commandInt); - wxString str(GetString(event.m_commandInt)); - if (str != "") - event.m_commandString = copystring((char *)(const char *)str); - } - else + m_noItems = 0; + m_updateHorizontalExtent = false; + m_selectedByKeyboard = false; +} + +bool wxListBox::Create(wxWindow *parent, + wxWindowID id, + const wxPoint& pos, + const wxSize& size, + int n, const wxString choices[], + long style, + const wxValidator& validator, + const wxString& name) +{ + // initialize base class fields + if ( !CreateControl(parent, id, pos, size, style, validator, name) ) + return false; + + // create the native control + if ( !MSWCreateControl(wxT("LISTBOX"), wxEmptyString, pos, size) ) { - event.m_commandInt = -1 ; - event.m_commandString = copystring("") ; + // control creation failed + return false; } - event.SetEventObject( this ); - ProcessCommand(event); - if (event.m_commandString) - delete[] event.m_commandString ; - return TRUE; - } - else if (param == LBN_DBLCLK) - { - wxCommandEvent event(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, m_windowId); - event.SetEventObject( this ); - GetEventHandler()->ProcessEvent(event) ; - return TRUE; -/* + // initialize the contents + for ( int i = 0; i < n; i++ ) { -#if WXWIN_COMPATIBILITY - wxWindow *parent = (wxWindow *)GetParent(); - if (parent) - parent->GetEventHandler()->OnDefaultAction(this); -#endif - return TRUE; + Append(choices[i]); } - */ - } - return FALSE; -} -// Listbox item -wxListBox::wxListBox(void) -{ - m_noItems = 0; - m_selected = 0; + // now we can compute our best size correctly, so do it again + SetInitialSize(size); + + return true; } -bool wxListBox::Create(wxWindow *parent, wxWindowID id, +bool wxListBox::Create(wxWindow *parent, + wxWindowID id, const wxPoint& pos, const wxSize& size, - int n, const wxString choices[], + const wxArrayString& choices, long style, const wxValidator& validator, const wxString& name) { - m_noItems = 0; - m_hWnd = 0; - m_selected = 0; + wxCArrayString chs(choices); + return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(), + style, validator, name); +} - SetName(name); - SetValidator(validator); +wxListBox::~wxListBox() +{ + Clear(); +} - if (parent) parent->AddChild(this); +WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const +{ + WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle); - wxSystemSettings settings; - SetBackgroundColour(settings.GetSystemColour(wxSYS_COLOUR_WINDOW)); - SetForegroundColour(parent->GetForegroundColour()); + // we always want to get the notifications + msStyle |= LBS_NOTIFY; - m_windowId = ( id == -1 ) ? (int)NewControlId() : id; + // without this style, you get unexpected heights, so e.g. constraint + // layout doesn't work properly + msStyle |= LBS_NOINTEGRALHEIGHT; - int x = pos.x; - int y = pos.y; - int width = size.x; - int height = size.y; - m_windowStyle = style; + wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED), + wxT("only one of listbox selection modes can be specified") ); - DWORD wstyle = WS_VSCROLL | WS_TABSTOP | LBS_NOTIFY | LBS_HASSTRINGS; - if (m_windowStyle & wxLB_MULTIPLE) - wstyle |= LBS_MULTIPLESEL; - else if (m_windowStyle & wxLB_EXTENDED) - wstyle |= LBS_EXTENDEDSEL; + if ( style & wxLB_MULTIPLE ) + msStyle |= LBS_MULTIPLESEL; + else if ( style & wxLB_EXTENDED ) + msStyle |= LBS_EXTENDEDSEL; - 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; + wxASSERT_MSG( !(style & wxLB_ALWAYS_SB) || !(style & wxLB_NO_SB), + wxT( "Conflicting styles wxLB_ALWAYS_SB and wxLB_NO_SB." ) ); -#if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) { - // we don't support LBS_OWNERDRAWVARIABLE yet - wstyle |= LBS_OWNERDRAWFIXED; + if ( !(style & wxLB_NO_SB) ) + { + msStyle |= WS_VSCROLL; + if ( style & wxLB_ALWAYS_SB ) + msStyle |= LBS_DISABLENOSCROLL; } -#endif - // Without this style, you get unexpected heights, so e.g. constraint layout - // doesn't work properly - wstyle |= LBS_NOINTEGRALHEIGHT; - - bool want3D; - WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ; - - // Even with extended styles, need to combine with WS_BORDER - // for them to look right. - if ( want3D || wxStyleHasBorder(m_windowStyle) ) - { - wstyle |= WS_BORDER; - } - - m_hWnd = (WXHWND)::CreateWindowEx(exStyle, "LISTBOX", NULL, - wstyle | WS_CHILD, - 0, 0, 0, 0, - (HWND)parent->GetHWND(), (HMENU)m_windowId, - wxGetInstance(), NULL); - - wxCHECK_MSG( m_hWnd, FALSE, "Failed to create listbox" ); - -#if CTL3D - if (want3D) - { - Ctl3dSubclassCtl(hwnd); - m_useCtl3D = TRUE; - } -#endif - // Subclass again to catch messages - SubclassWin(m_hWnd); + if ( m_windowStyle & wxLB_HSCROLL ) + msStyle |= WS_HSCROLL; + if ( m_windowStyle & wxLB_SORT ) + msStyle |= LBS_SORT; - size_t ui; - for (ui = 0; ui < (size_t)n; ui++) { - Append(choices[ui]); - } - - /* Not needed -- done in Append -#if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) { - for (ui = 0; ui < (size_t)n; ui++) { - // create new item which will process WM_{DRAW|MEASURE}ITEM messages - wxOwnerDrawn *pNewItem = CreateItem(ui); - pNewItem->SetName(choices[ui]); - m_aItems.Add(pNewItem); - ListBox_SetItemData(hwnd, ui, pNewItem); - } +#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 -*/ - - if ( (m_windowStyle & wxLB_MULTIPLE) == 0 ) - SendMessage(hwnd, LB_SETCURSEL, 0, 0); - - SetFont(parent->GetFont()); - - SetSize(x, y, width, height); - - Show(TRUE); +#endif // wxUSE_OWNER_DRAWN - return TRUE; + return msStyle; } -wxListBox::~wxListBox(void) +void wxListBox::OnInternalIdle() { -#if wxUSE_OWNER_DRAWN - size_t uiCount = m_aItems.Count(); - while ( uiCount-- != 0 ) { - delete m_aItems[uiCount]; - } -#endif -} + wxWindow::OnInternalIdle(); -void wxListBox::SetupColours(void) -{ - SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW)); - SetForegroundColour(GetParent()->GetForegroundColour()); + if (m_updateHorizontalExtent) + { + SetHorizontalExtent(wxEmptyString); + m_updateHorizontalExtent = false; + } } -void wxListBox::SetFirstItem(int N) +void wxListBox::MSWOnItemsChanged() { - SendMessage(hwnd,LB_SETTOPINDEX,(WPARAM)N,(LPARAM)0) ; -} + // 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 -void wxListBox::SetFirstItem(const wxString& s) -{ - int N = FindString(s) ; + m_updateHorizontalExtent = true; - if (N>=0) - SetFirstItem(N) ; + InvalidateBestSize(); } -void wxListBox::Delete(int N) +// ---------------------------------------------------------------------------- +// implementation of wxListBoxBase methods +// ---------------------------------------------------------------------------- + +void wxListBox::DoSetFirstItem(int N) { - SendMessage(hwnd, LB_DELETESTRING, N, 0); - m_noItems --; - SetHorizontalExtent(""); + wxCHECK_RET( IsValid(N), + wxT("invalid index in wxListBox::SetFirstItem") ); + + SendMessage(GetHwnd(), LB_SETTOPINDEX, (WPARAM)N, (LPARAM)0); } -void wxListBox::Append(const wxString& item) +void wxListBox::DoDeleteOneItem(unsigned int n) { - int index = ListBox_AddString(hwnd, item); - m_noItems ++; + wxCHECK_RET( IsValid(n), + wxT("invalid index in wxListBox::Delete") ); #if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) { - wxOwnerDrawn *pNewItem = CreateItem(index); // dummy argument - pNewItem->SetName(item); - m_aItems.Add(pNewItem); - ListBox_SetItemData(hwnd, index, pNewItem); + if ( HasFlag(wxLB_OWNERDRAW) ) + { + delete m_aItems[n]; + m_aItems.RemoveAt(n); } -#endif +#endif // wxUSE_OWNER_DRAWN + + SendMessage(GetHwnd(), LB_DELETESTRING, n, 0); + m_noItems--; - SetHorizontalExtent(item); + MSWOnItemsChanged(); + + UpdateOldSelections(); } -void wxListBox::Append(const wxString& item, char *Client_data) +int wxListBox::FindString(const wxString& s, bool bCase) const { - int index = ListBox_AddString(hwnd, item); - m_noItems ++; + // back to base class search for not native search type + if (bCase) + return wxItemContainerImmutable::FindString( s, bCase ); -#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("Can't use client data with owner-drawn listboxes"); - } + int pos = ListBox_FindStringExact(GetHwnd(), -1, s.wx_str()); + if (pos == LB_ERR) + return wxNOT_FOUND; else -#endif - ListBox_SetItemData(hwnd, index, Client_data); - - SetHorizontalExtent(item); + return pos; } -void wxListBox::Set(int n, const wxString *choices, char** clientData) +void wxListBox::DoClear() { - ShowWindow(hwnd, SW_HIDE); - ListBox_ResetContent(hwnd); - int i; - for (i = 0; i < n; i++) - { - ListBox_AddString(hwnd, choices[i]); - if ( clientData ) - ListBox_SetItemData(hwnd, i, clientData[i]); - } - m_noItems = n; - #if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) { - // first delete old items - size_t ui = m_aItems.Count(); - while ( ui-- != 0 ) { - delete m_aItems[ui]; - } - m_aItems.Empty(); - - // then create new ones - for (ui = 0; ui < (size_t)n; ui++) { - wxOwnerDrawn *pNewItem = CreateItem(ui); - pNewItem->SetName(choices[ui]); - m_aItems.Add(pNewItem); - ListBox_SetItemData(hwnd, ui, pNewItem); - - wxASSERT_MSG(clientData[ui] == NULL, - "Can't use client data with owner-drawn listboxes"); - } + if ( HasFlag(wxLB_OWNERDRAW) ) + { + WX_CLEAR_ARRAY(m_aItems); } -#endif +#endif // wxUSE_OWNER_DRAWN - SetHorizontalExtent(""); - ShowWindow(hwnd, SW_SHOW); -} + ListBox_ResetContent(GetHwnd()); -int wxListBox::FindString(const wxString& s) const -{ - int pos = ListBox_FindStringExact(hwnd, (WPARAM)-1, s); - if (pos == LB_ERR) - return -1; - else - return pos; + m_noItems = 0; + MSWOnItemsChanged(); + + UpdateOldSelections(); } -void wxListBox::Clear(void) +void wxListBox::DoSetSelection(int N, bool select) { - ListBox_ResetContent(hwnd); + wxCHECK_RET( N == wxNOT_FOUND || IsValid(N), + wxT("invalid index in wxListBox::SetSelection") ); - m_noItems = 0; - ListBox_GetHorizontalExtent(hwnd); -} + if ( HasMultipleSelection() ) + { + // 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); + } -void wxListBox::SetSelection(int N, bool select) -{ - if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED)) - SendMessage(hwnd, LB_SETSEL, select, N); - else - { - int N1 = N; - if (!select) - N1 = -1; - SendMessage(hwnd, LB_SETCURSEL, N1, 0); - } + UpdateOldSelections(); } -bool wxListBox::Selected(int N) const +bool wxListBox::IsSelected(int N) const { - return SendMessage(hwnd, LB_GETSEL, N, 0) == 0 ? FALSE : TRUE; -} + wxCHECK_MSG( IsValid(N), false, + wxT("invalid index in wxListBox::Selected") ); -void wxListBox::Deselect(int N) -{ - if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED)) - SendMessage(hwnd, LB_SETSEL, FALSE, N); + return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? false : true; } -char *wxListBox::GetClientData(int N) const +void *wxListBox::DoGetItemClientData(unsigned int n) const { - return (char *)SendMessage(hwnd, LB_GETITEMDATA, N, 0); + return (void *)SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0); } -void wxListBox::SetClientData(int N, char *Client_data) +void wxListBox::DoSetItemClientData(unsigned int n, void *clientData) { - if ( ListBox_SetItemData(hwnd, N, Client_data) == LB_ERR ) - wxLogDebug("LB_SETITEMDATA failed"); + if ( ListBox_SetItemData(GetHwnd(), n, clientData) == LB_ERR ) + { + wxLogDebug(wxT("LB_SETITEMDATA failed")); + } } // Return number of selections and an array of selected integers int wxListBox::GetSelections(wxArrayInt& aSelections) const { - aSelections.Empty(); + aSelections.Empty(); - if ((m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED)) - { - int no_sel = ListBox_GetSelCount(hwnd); - if (no_sel != 0) { - int *selections = new int[no_sel]; - if ( ListBox_GetSelItems(hwnd, no_sel, selections) == LB_ERR ) { - wxFAIL_MSG("This listbox can't have single-selection style!"); - } - - aSelections.Alloc(no_sel); - for ( int n = 0; n < no_sel; n++ ) - aSelections.Add(selections[n]); - - delete [] selections; + if ( HasMultipleSelection() ) + { + int countSel = ListBox_GetSelCount(GetHwnd()); + if ( countSel == LB_ERR ) + { + wxLogDebug(wxT("ListBox_GetSelCount failed")); + } + else if ( countSel != 0 ) + { + int *selections = new int[countSel]; + + if ( ListBox_GetSelItems(GetHwnd(), + countSel, selections) == LB_ERR ) + { + wxLogDebug(wxT("ListBox_GetSelItems failed")); + countSel = -1; + } + else + { + aSelections.Alloc(countSel); + for ( int n = 0; n < countSel; n++ ) + aSelections.Add(selections[n]); + } + + delete [] selections; + } + + return countSel; } + else // single-selection listbox + { + if (ListBox_GetCurSel(GetHwnd()) > -1) + aSelections.Add(ListBox_GetCurSel(GetHwnd())); - return no_sel; - } - else // single-selection listbox - { - aSelections.Add(ListBox_GetCurSel(hwnd)); - - return 1; - } + return aSelections.Count(); + } } // Get single selection, for single choice list items int wxListBox::GetSelection() const { - wxCHECK_MSG( !(m_windowStyle & wxLB_MULTIPLE) && - !(m_windowStyle & wxLB_EXTENDED), - -1, - "GetSelection() can't be used with multiple-selection " - "listboxes, use GetSelections() instead." ); + wxCHECK_MSG( !HasMultipleSelection(), + -1, + wxT("GetSelection() can't be used with multiple-selection listboxes, use GetSelections() instead.") ); - return ListBox_GetCurSel(hwnd); + return ListBox_GetCurSel(GetHwnd()); } // Find string for position -wxString wxListBox::GetString(int N) const +wxString wxListBox::GetString(unsigned int n) const { - if (N < 0 || N > m_noItems) - return wxString(""); - - int len = (int)SendMessage(hwnd, LB_GETTEXT, N, (LONG)wxBuffer); - wxBuffer[len] = 0; - return wxString(wxBuffer); + wxCHECK_MSG( IsValid(n), wxEmptyString, + wxT("invalid index in wxListBox::GetString") ); + + int len = ListBox_GetTextLen(GetHwnd(), n); + + // +1 for terminating NUL + wxString result; + ListBox_GetText(GetHwnd(), n, (wxChar*)wxStringBuffer(result, len + 1)); + + return result; } -void wxListBox::SetSize(int x, int y, int width, int height, int sizeFlags) +int wxListBox::DoInsertItems(const wxArrayStringsAdapter & items, + unsigned int pos, + void **clientData, + wxClientDataType type) { - int currentX, currentY; - GetPosition(¤tX, ¤tY); + MSWAllocStorage(items, LB_INITSTORAGE); - int x1 = x; - int y1 = y; - int w1 = width; - int h1 = height; + const bool append = pos == GetCount(); - if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE)) - x1 = currentX; - if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE)) - y1 = currentY; + // we must use CB_ADDSTRING when appending as only it works correctly for + // the sorted controls + const unsigned msg = append ? LB_ADDSTRING : LB_INSERTSTRING; - AdjustForParentClientOrigin(x1, y1, sizeFlags); + if ( append ) + pos = 0; - // If we're prepared to use the existing size, then... - if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO)) - { - GetSize(&w1, &h1); - } + int n = wxNOT_FOUND; - int cx; // button font dimensions - int cy; + const unsigned int numItems = items.GetCount(); + for ( unsigned int i = 0; i < numItems; i++ ) + { + n = MSWInsertOrAppendItem(pos, items[i], msg); + if ( n == wxNOT_FOUND ) + return n; + + if ( !append ) + pos++; + + ++m_noItems; - wxGetCharSize(GetHWND(), &cx, &cy, & this->GetFont()); +#if wxUSE_OWNER_DRAWN + if ( HasFlag(wxLB_OWNERDRAW) ) + { + wxOwnerDrawn *pNewItem = CreateLboxItem(n); + pNewItem->SetFont(GetFont()); + m_aItems.Insert(pNewItem, n); + } +#endif // wxUSE_OWNER_DRAWN + AssignNewItemClientData(n, clientData, i, type); + } - float control_width, control_height, control_x, control_y; + MSWOnItemsChanged(); - // Deal with default size (using -1 values) - if (w1<=0) - w1 = DEFAULT_ITEM_WIDTH; + UpdateOldSelections(); - if (h1<=0) - h1 = DEFAULT_ITEM_HEIGHT; + return n; +} - control_x = (float)x1; - control_y = (float)y1; - control_width = (float)w1; - control_height = (float)h1; +int wxListBox::DoHitTestList(const wxPoint& point) const +{ + 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") ); - // Calculations may have made size too small - if (control_height <= 0) - control_height = (float)DEFAULT_ITEM_HEIGHT; + // remember the state of the item + bool wasSelected = IsSelected(n); - if (control_width <= 0) - control_width = (float)DEFAULT_ITEM_WIDTH; + void *oldData = NULL; + wxClientData *oldObjData = NULL; + if ( HasClientUntypedData() ) + oldData = GetClientData(n); + else if ( HasClientObjectData() ) + oldObjData = GetClientObject(n); -// wxDebugMsg("About to set the listbox height to %d", (int)control_height); - MoveWindow(hwnd, (int)control_x, (int)control_y, - (int)control_width, (int)control_height, TRUE); + // delete and recreate it + SendMessage(GetHwnd(), LB_DELETESTRING, n, 0); + int newN = n; + if ( n == (m_noItems - 1) ) + newN = -1; + + ListBox_InsertString(GetHwnd(), newN, s.wx_str()); + + // restore the client data + if ( oldData ) + SetClientData(n, oldData); + else if ( oldObjData ) + SetClientObject(n, oldObjData); + + // we may have lost the selection + if ( wasSelected ) + Select(n); + + MSWOnItemsChanged(); } -// 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. +unsigned int wxListBox::GetCount() const +{ + return m_noItems; +} + +// ---------------------------------------------------------------------------- +// size-related stuff +// ---------------------------------------------------------------------------- + void wxListBox::SetHorizontalExtent(const wxString& s) { - // Only necessary if we want a horizontal scrollbar - if (!(m_windowStyle & wxHSCROLL)) - return; - TEXTMETRIC lpTextMetric; + // the rest is only necessary if we want a horizontal scrollbar + if ( !HasFlag(wxHSCROLL) ) + return; - if (s != "") - { - int existingExtent = (int)SendMessage(hwnd, LB_GETHORIZONTALEXTENT, 0, 0L); - HDC dc = GetWindowDC(hwnd); - HFONT oldFont = 0; - if (GetFont().Ok() && GetFont().GetResourceHandle()) - oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle()); - GetTextMetrics(dc, &lpTextMetric); - SIZE extentXY; - ::GetTextExtentPoint(dc, (LPSTR) (const char *)s, s.Length(), &extentXY); - int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth); - - if (oldFont) - ::SelectObject(dc, oldFont); - - ReleaseDC(hwnd, dc); - if (extentX > existingExtent) - SendMessage(hwnd, LB_SETHORIZONTALEXTENT, LOWORD(extentX), 0L); - return; - } - else - { + WindowHDC dc(GetHwnd()); + SelectInHDC selFont(dc, GetHfontOf(GetFont())); + + TEXTMETRIC lpTextMetric; + ::GetTextMetrics(dc, &lpTextMetric); + int largestExtent = 0; - HDC dc = GetWindowDC(hwnd); - HFONT oldFont = 0; - if (GetFont().Ok() && GetFont().GetResourceHandle()) - oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle()); - - GetTextMetrics(dc, &lpTextMetric); - int i; - for (i = 0; i < m_noItems; i++) + SIZE extentXY; + + if ( s.empty() ) { - int len = (int)SendMessage(hwnd, LB_GETTEXT, i, (LONG)wxBuffer); - wxBuffer[len] = 0; - SIZE extentXY; - ::GetTextExtentPoint(dc, (LPSTR)wxBuffer, len, &extentXY); - int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth); - if (extentX > largestExtent) - largestExtent = extentX; + // set extent to the max length of all strings + for ( unsigned int i = 0; i < m_noItems; i++ ) + { + const wxString str = GetString(i); + ::GetTextExtentPoint32(dc, str.c_str(), str.length(), &extentXY); + + int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth); + if ( extentX > largestExtent ) + largestExtent = extentX; + } } - if (oldFont) - ::SelectObject(dc, oldFont); - - ReleaseDC(hwnd, dc); - SendMessage(hwnd, LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L); - } -} - -void -wxListBox::InsertItems(int nItems, const wxString items[], int pos) -{ - int i; - for (i = 0; i < nItems; i++) - ListBox_InsertString(hwnd, i + pos, items[i]); - m_noItems += nItems; - - #if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) { - for ( i = 0; i < nItems; i++ ) { - wxOwnerDrawn *pNewItem = CreateItem((size_t)(pos + i)); - pNewItem->SetName(items[i]); - m_aItems.Insert(pNewItem, (size_t)(pos + i)); - ListBox_SetItemData(hwnd, i, pNewItem); - } + else // just increase the extent to the length of this string + { + int existingExtent = (int)SendMessage(GetHwnd(), + LB_GETHORIZONTALEXTENT, 0, 0L); + + ::GetTextExtentPoint32(dc, s.c_str(), s.length(), &extentXY); + + int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth); + if ( extentX > existingExtent ) + largestExtent = extentX; } - #endif - SetHorizontalExtent(""); + if ( largestExtent ) + SendMessage(GetHwnd(), LB_SETHORIZONTALEXTENT, LOWORD(largestExtent), 0L); + //else: it shouldn't change } -void wxListBox::SetString(int N, const wxString& s) +wxSize wxListBox::DoGetBestClientSize() const { - int sel = -1; - if (!(m_windowStyle & wxLB_MULTIPLE) && !(m_windowStyle & wxLB_EXTENDED)) - sel = GetSelection(); - - char *oldData = (char *)wxListBox::GetClientData(N); - - SendMessage(hwnd, LB_DELETESTRING, N, 0); + // find the widest string + int wLine; + int wListbox = 0; + for (unsigned int i = 0; i < m_noItems; i++) + { + wxString str(GetString(i)); + GetTextExtent(str, &wLine, NULL); + if ( wLine > wListbox ) + wListbox = wLine; + } - int newN = N; - if (N == (m_noItems - 1)) - newN = -1; - - SendMessage(hwnd, LB_INSERTSTRING, newN, (LPARAM) (const char *)s); - if (oldData) - wxListBox::SetClientData(N, oldData); + // give it some reasonable default value if there are no strings in the + // list + if ( wListbox == 0 ) + wListbox = 100; - // Selection may have changed - if (sel >= 0) - SetSelection(sel); + // the listbox should be slightly larger than the widest string + wListbox += 3*GetCharWidth(); -#if wxUSE_OWNER_DRAWN - if ( m_windowStyle & wxLB_OWNERDRAW ) - // update item's text - m_aItems[N]->SetName(s); -#endif //USE_OWNER_DRAWN + // 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 = SendMessage(GetHwnd(), LB_GETITEMHEIGHT, 0, 0)* + wxMin(wxMax(m_noItems, 3), 10); + + return wxSize(wListbox, hListbox); } -int wxListBox::Number (void) const +// ---------------------------------------------------------------------------- +// callbacks +// ---------------------------------------------------------------------------- + +bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) { - return m_noItems; + wxEventType evtType; + int n = wxNOT_FOUND; + if ( param == LBN_SELCHANGE ) + { + if ( HasMultipleSelection() ) + return CalcAndSendEvent(); + + evtType = wxEVT_COMMAND_LISTBOX_SELECTED; + + if ( m_selectedByKeyboard ) + { + // We shouldn't use the mouse position to find the item as mouse + // can be anywhere, ask the listbox itself. Notice that this can't + // be used when the item is selected using the mouse however as + // LB_GETCARETINDEX will always return a valid item, even if the + // mouse is clicked below all the items, which is why we find the + // item ourselves below in this case. + n = SendMessage(GetHwnd(), LB_GETCARETINDEX, 0, 0); + } + //else: n will be determined below from the mouse position + } + else if ( param == LBN_DBLCLK ) + { + evtType = wxEVT_COMMAND_LISTBOX_DOUBLECLICKED; + } + else + { + // some event we're not interested in + return false; + } + + // Find the item position if it was a mouse-generated selection event or a + // double click event (which is always generated using the mouse) + if ( n == wxNOT_FOUND ) + { + const DWORD pos = ::GetMessagePos(); + const wxPoint pt(GET_X_LPARAM(pos), GET_Y_LPARAM(pos)); + n = HitTest(ScreenToClient(wxPoint(pt))); + } + + // We get events even when mouse is clicked outside of any valid item from + // Windows, just ignore them. + if ( n == wxNOT_FOUND ) + return false; + + if ( param == LBN_SELCHANGE ) + { + if ( !DoChangeSingleSelection(n) ) + return false; + } + + // Do generate an event otherwise. + return SendEvent(evtType, n, true /* selection */); } -// For single selection items only -wxString wxListBox::GetStringSelection (void) const +WXLRESULT +wxListBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) { - int sel = GetSelection (); - if (sel > -1) - return this->GetString (sel); - else - return wxString(""); + // Remember whether there was a keyboard or mouse event before + // LBN_SELCHANGE: this allows us to correctly determine the item affected + // by it in MSWCommand() above in any case. + if ( WM_KEYFIRST <= nMsg && nMsg <= WM_KEYLAST ) + m_selectedByKeyboard = true; + else if ( WM_MOUSEFIRST <= nMsg && nMsg <= WM_MOUSELAST ) + m_selectedByKeyboard = false; + + return wxListBoxBase::MSWWindowProc(nMsg, wParam, lParam); } -bool wxListBox::SetStringSelection (const wxString& s, bool flag) +// ---------------------------------------------------------------------------- +// owner-drawn list boxes support +// ---------------------------------------------------------------------------- + +#if wxUSE_OWNER_DRAWN + +// misc overloaded methods +// ----------------------- + +bool wxListBox::SetFont(const wxFont &font) { - int sel = FindString (s); - if (sel > -1) + if ( HasFlag(wxLB_OWNERDRAW) ) { - SetSelection (sel, flag); - return TRUE; + const unsigned count = m_aItems.GetCount(); + for ( unsigned i = 0; i < count; i++ ) + m_aItems[i]->SetFont(font); } - else - return FALSE; + + wxListBoxBase::SetFont(font); + + return true; } -// Is this the right thing? Won't setselection generate a command -// event too? No! It'll just generate a setselection event. -// But we still can't have this being called whenever a real command -// is generated, because it sets the selection, which will already -// have been done! (Unless we have an optional argument for calling -// by the actual window system, or a separate function, ProcessCommand) -void wxListBox::Command (wxCommandEvent & event) +bool wxListBox::GetItemRect(size_t n, wxRect& rect) const { - if (event.m_extraLong) - SetSelection (event.m_commandInt); - else + 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 { - Deselect (event.m_commandInt); - return; + // couldn't retrieve rect: for example, item isn't visible + return false; } - ProcessCommand (event); } -WXHBRUSH wxListBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor, - WXUINT message, WXWPARAM wParam, WXLPARAM lParam) +bool wxListBox::RefreshItem(size_t n) { -#if CTL3D - if ( m_useCtl3D ) - { - HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam); - return (WXHBRUSH) hbrush; - } -#endif + wxRect rect; + if ( !GetItemRect(n, rect) ) + return false; - if (GetParent()->GetTransparentBackground()) - SetBkMode((HDC) pDC, TRANSPARENT); - else - SetBkMode((HDC) pDC, OPAQUE); - - ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue())); - ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue())); - - wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID); - - // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush - // has a zero usage count. - backgroundBrush->RealizeResource(); - return (WXHBRUSH) backgroundBrush->GetResourceHandle(); -} - -long wxListBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) -{ -#if 0 - switch (nMsg) - { - case WM_INITDIALOG: - case WM_ACTIVATE: - case WM_SETFOCUS: - case WM_KILLFOCUS: - case WM_CREATE: - case WM_PAINT: - case WM_QUERYDRAGICON: - case WM_SIZE: - case WM_RBUTTONDOWN: - case WM_RBUTTONUP: - case WM_RBUTTONDBLCLK: - case WM_MBUTTONDOWN: - case WM_MBUTTONUP: - case WM_MBUTTONDBLCLK: - case WM_LBUTTONDOWN: - case WM_LBUTTONUP: - case WM_LBUTTONDBLCLK: - case WM_MOUSEMOVE: - case WM_COMMAND: - case WM_NOTIFY: - case WM_DESTROY: - case WM_MENUSELECT: - case WM_INITMENUPOPUP: - case WM_DRAWITEM: - case WM_MEASUREITEM: - case WM_KEYDOWN: - case WM_KEYUP: - case WM_CHAR: // Always an ASCII character - case WM_HSCROLL: - case WM_VSCROLL: - case WM_CTLCOLORBTN: - case WM_CTLCOLORDLG: - case WM_CTLCOLORLISTBOX: - case WM_CTLCOLORMSGBOX: - case WM_CTLCOLORSCROLLBAR: - case WM_CTLCOLORSTATIC: - case WM_CTLCOLOREDIT: - case WM_SYSCOLORCHANGE: - case WM_ERASEBKGND: - case WM_MDIACTIVATE: - case WM_DROPFILES: - case WM_QUERYENDSESSION: - case WM_CLOSE: - case WM_GETMINMAXINFO: - case WM_NCHITTEST: - return MSWDefWindowProc(nMsg, wParam, lParam ); - } -#endif + RECT rc; + wxCopyRectToRECT(rect, rc); - return wxControl::MSWWindowProc(nMsg, wParam, lParam); + return ::InvalidateRect((HWND)GetHWND(), &rc, FALSE) == TRUE; } -#if wxUSE_OWNER_DRAWN // 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 -// ## should be changed for LBS_OWNERDRAWVARIABLE style listboxes -// NB: can't forward this to wxListBoxItem because LB_SETITEMDATA -// message is not yet sent when we get here! +// TODO should be changed for LBS_OWNERDRAWVARIABLE style listboxes + +// NB: can't forward this to wxListBoxItem because LB_SETITEMDATA +// message is not yet sent when we get here! bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item) { - // only owner-drawn control should receive this message - wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE ); + // only owner-drawn control should receive this message + wxCHECK( HasFlag(wxLB_OWNERDRAW), false ); + + MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item; - MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item; +#ifdef __WXWINCE__ + HDC hdc = GetDC(NULL); +#else + HDC hdc = CreateIC(wxT("DISPLAY"), NULL, NULL, 0); +#endif - wxDC dc; - dc.SetHDC((WXHDC)CreateIC("DISPLAY", NULL, NULL, 0)); - dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_ANSI_VAR_FONT)); + { + wxDCTemp dc((WXHDC)hdc); + dc.SetFont(GetFont()); - pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE; - pStruct->itemWidth = dc.GetCharWidth(); + pStruct->itemHeight = dc.GetCharHeight() + 2 * LISTBOX_EXTRA_SPACE; + pStruct->itemWidth = dc.GetCharWidth(); + } - return TRUE; +#ifdef __WXWINCE__ + ReleaseDC(NULL, hdc); +#else + DeleteDC(hdc); +#endif + + 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 ); + // only owner-drawn control should receive this message + wxCHECK( HasFlag(wxLB_OWNERDRAW), false ); + + DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item; - DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item; - wxListBoxItem *pItem = (wxListBoxItem *)SendMessage(hwnd, LB_GETITEMDATA, - pStruct->itemID, 0); + // the item may be -1 for an empty listbox + if ( pStruct->itemID == (UINT)-1 ) + return false; - wxCHECK( (int)pItem != LB_ERR, FALSE ); + wxListBoxItem *pItem = (wxListBoxItem *)m_aItems[pStruct->itemID]; - wxDC dc; - dc.SetHDC((WXHDC)pStruct->hDC, FALSE); - wxRect rect(pStruct->rcItem.left, pStruct->rcItem.top, - pStruct->rcItem.right - pStruct->rcItem.left, - pStruct->rcItem.bottom - pStruct->rcItem.top); + wxDCTemp dc((WXHDC)pStruct->hDC); - return pItem->OnDrawItem(dc, rect, - (wxOwnerDrawn::wxODAction)pStruct->itemAction, - (wxOwnerDrawn::wxODStatus)pStruct->itemState); + return pItem->OnDrawItem(dc, wxRectFromRECT(pStruct->rcItem), + (wxOwnerDrawn::wxODAction)pStruct->itemAction, + (wxOwnerDrawn::wxODStatus)(pStruct->itemState | wxOwnerDrawn::wxODHidePrefix)); } -#endif - // wxUSE_OWNER_DRAWN +#endif // wxUSE_OWNER_DRAWN + +#endif // wxUSE_LISTBOX