X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/47d67540a017101b3e46abe9ef0f55914d8de37e..4def3b359546ee186b3db723db719f85b761f36a:/src/msw/combobox.cpp diff --git a/src/msw/combobox.cpp b/src/msw/combobox.cpp index 01a8df28be..0d80dbcf05 100644 --- a/src/msw/combobox.cpp +++ b/src/msw/combobox.cpp @@ -1,14 +1,22 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: combobox.cpp +// Name: msw/combobox.cpp // Purpose: wxComboBox class // Author: Julian Smart // Modified by: // Created: 01/02/97 // RCS-ID: $Id$ // Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + #ifdef __GNUG__ #pragma implementation "combobox.h" #endif @@ -17,133 +25,302 @@ #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif +#if wxUSE_COMBOBOX + #ifndef WX_PRECOMP -#include "wx/setup.h" + #include "wx/settings.h" + #include "wx/log.h" #endif -#if wxUSE_COMBOBOX - #include "wx/combobox.h" +#include "wx/brush.h" #include "wx/clipbrd.h" #include "wx/msw/private.h" -#if !USE_SHARED_LIBRARY +#if wxUSE_TOOLTIPS + #ifndef __GNUWIN32_OLD__ + #include + #endif + #include "wx/tooltip.h" +#endif // wxUSE_TOOLTIPS + +// ---------------------------------------------------------------------------- +// wxWin macros +// ---------------------------------------------------------------------------- + IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl) -#endif -bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) +// ---------------------------------------------------------------------------- +// function prototypes +// ---------------------------------------------------------------------------- + +LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd, + UINT message, + WPARAM wParam, + LPARAM lParam); + +// --------------------------------------------------------------------------- +// global vars +// --------------------------------------------------------------------------- + +// the pointer to standard radio button wnd proc +static WXFARPROC gs_wndprocEdit = (WXFARPROC)NULL; + +// ============================================================================ +// implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// wnd proc for subclassed edit control +// ---------------------------------------------------------------------------- + +LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd, + UINT message, + WPARAM wParam, + LPARAM lParam) { - if (param == CBN_SELCHANGE) - { - wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId); - event.SetInt(GetSelection()); - event.SetEventObject(this); - event.SetString(copystring(GetStringSelection())); - ProcessCommand(event); - delete[] event.GetString(); - return TRUE; - } - else if (param == CBN_EDITCHANGE) - { - wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId); - event.SetString(copystring(GetValue())); - event.SetEventObject(this); - ProcessCommand(event); - delete[] event.GetString(); - return TRUE; - } - else return FALSE; + HWND hwndCombo = ::GetParent(hWnd); + wxWindow *win = wxFindWinFromHandle((WXHWND)hwndCombo); + + switch ( message ) + { + // forward some messages to the combobox + case WM_KEYUP: + case WM_KEYDOWN: + case WM_CHAR: + { + wxComboBox *combo = wxDynamicCast(win, wxComboBox); + wxCHECK_MSG( combo, 0, _T("should have combo as parent") ); + + if ( combo->MSWProcessEditMsg(message, wParam, lParam) ) + return 0; + } + break; + +#if 0 + case WM_GETDLGCODE: + { + wxCHECK_MSG( win, 0, _T("should have a parent") ); + + if ( win->GetWindowStyle() & wxPROCESS_ENTER ) + { + // need to return a custom dlg code or we'll never get it + return DLGC_WANTMESSAGE; + } + } + break; +#endif // 0 + + // deal with tooltips here +#if wxUSE_TOOLTIPS + case WM_NOTIFY: + { + wxCHECK_MSG( win, 0, _T("should have a parent") ); + + NMHDR* hdr = (NMHDR *)lParam; + if ( (int)hdr->code == TTN_NEEDTEXT ) + { + wxToolTip *tooltip = win->GetToolTip(); + if ( tooltip ) + { + TOOLTIPTEXT *ttt = (TOOLTIPTEXT *)lParam; + ttt->lpszText = (wxChar *)tooltip->GetTip().c_str(); + } + + // processed + return 0; + } + } + break; +#endif // wxUSE_TOOLTIPS + } + + return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam); } -bool wxComboBox::Create(wxWindow *parent, wxWindowID id, - const wxString& value, - const wxPoint& pos, - const wxSize& size, - int n, const wxString choices[], - long style, - const wxValidator& validator, - const wxString& name) +WXHBRUSH wxComboBox::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor), + WXUINT WXUNUSED(message), + WXWPARAM WXUNUSED(wParam), + WXLPARAM WXUNUSED(lParam)) { - SetName(name); - SetValidator(validator); - if (parent) parent->AddChild(this); - SetBackgroundColour(parent->GetDefaultBackgroundColour()) ; - SetForegroundColour(parent->GetDefaultForegroundColour()) ; - m_noStrings = n; +#if wxUSE_CTL3D + if ( m_useCtl3D ) + { + HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam); + return (WXHBRUSH) hbrush; + } +#endif // wxUSE_CTL3D - m_windowStyle = style; + HDC hdc = (HDC)pDC; + if (GetParent()->GetTransparentBackground()) + SetBkMode(hdc, TRANSPARENT); + else + SetBkMode(hdc, OPAQUE); - if ( id == -1 ) - m_windowId = (int)NewControlId(); - else - m_windowId = id; - - int x = pos.x; - int y = pos.y; - int width = size.x; - int height = size.y; - - long msStyle = WS_CHILD | WS_HSCROLL | WS_VSCROLL - | WS_TABSTOP | WS_VISIBLE | CBS_NOINTEGRALHEIGHT; - if (m_windowStyle & wxCB_READONLY) - msStyle |= CBS_DROPDOWNLIST; - else if (m_windowStyle & wxCB_SIMPLE) // A list (shown always) and edit control - msStyle |= CBS_SIMPLE; - else - msStyle |= CBS_DROPDOWN; - - if (m_windowStyle & wxCB_SORT) - msStyle |= CBS_SORT; - - 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 || (m_windowStyle & wxSIMPLE_BORDER) || (m_windowStyle & wxRAISED_BORDER) || - (m_windowStyle & wxSUNKEN_BORDER) || (m_windowStyle & wxDOUBLE_BORDER)) - msStyle |= WS_BORDER; - - HWND wx_combo = CreateWindowEx(exStyle, "COMBOBOX", NULL, - msStyle, - 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId, - wxGetInstance(), NULL); -/* -#if CTL3D - if (want3D) - { - Ctl3dSubclassCtl(wx_combo); - m_useCtl3D = TRUE; - } -#endif -*/ + wxColour colBack = GetBackgroundColour(); - m_hWnd = (WXHWND)wx_combo; + if (!IsEnabled()) + colBack = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE); - // Subclass again for purposes of dialog editing mode - SubclassWin((WXHWND)wx_combo); + ::SetBkColor(hdc, wxColourToRGB(colBack)); + ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour())); - SetFont(* parent->GetFont()); - int i; - for (i = 0; i < n; i++) - SendMessage(wx_combo, CB_INSERTSTRING, i, (LONG)(const char *)choices[i]); - SendMessage(wx_combo, CB_SETCURSEL, i, 0); + wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID); + + return (WXHBRUSH)brush->GetResourceHandle(); +} - SetSize(x, y, width, height); - if ( value != "" ) - SetWindowText(wx_combo, (const char *)value); +// ---------------------------------------------------------------------------- +// wxComboBox +// ---------------------------------------------------------------------------- - return TRUE; +bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam) +{ + switch ( msg ) + { + case WM_CHAR: + return HandleChar(wParam, lParam, TRUE /* isASCII */); + + case WM_KEYDOWN: + return HandleKeyDown(wParam, lParam); + + case WM_KEYUP: + return HandleKeyUp(wParam, lParam); + } + + return FALSE; +} + +bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) +{ + wxString value; + int sel = -1; + switch ( param ) + { + case CBN_SELCHANGE: + sel = GetSelection(); + if ( sel > -1 ) + { + value = GetString(sel); + + wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId()); + event.SetInt(sel); + event.SetEventObject(this); + event.SetString(value); + ProcessCommand(event); + } + else + { + break; + } + + // fall through: for compability with wxGTK, also send the text + // update event when the selection changes (this also seems more + // logical as the text does change) + + case CBN_EDITCHANGE: + { + // if sel != -1, value was initialized above (and we can't use + // GetValue() here as it would return the old selection and we + // want the new one) + wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId()); + event.SetString(sel == -1 ? GetValue() : value); + event.SetEventObject(this); + ProcessCommand(event); + } + break; + } + + // there is no return value for the CBN_ notifications, so always return + // FALSE from here to pass the message to DefWindowProc() + return FALSE; } -wxString wxComboBox::GetValue() const +WXHWND wxComboBox::GetEditHWND() const { - return wxGetWindowText(GetHWND()); + // this function should not be called for wxCB_READONLY controls, it is + // the callers responsability to check this + wxASSERT_MSG( !(GetWindowStyle() & wxCB_READONLY), + _T("read-only combobox doesn't have any edit control") ); + + POINT pt; + pt.x = pt.y = 4; + HWND hwndEdit = ::ChildWindowFromPoint(GetHwnd(), pt); + if ( !hwndEdit || hwndEdit == GetHwnd() ) + { + wxFAIL_MSG(_T("not read only combobox without edit control?")); + } + + return (WXHWND)hwndEdit; } +bool wxComboBox::Create(wxWindow *parent, wxWindowID id, + const wxString& value, + const wxPoint& pos, + const wxSize& size, + int n, const wxString choices[], + long style, + const wxValidator& validator, + const wxString& name) +{ + // first create wxWin object + if ( !CreateControl(parent, id, pos, size, style, validator, name) ) + return FALSE; + + // get the right style + long msStyle = WS_TABSTOP | WS_VSCROLL | WS_HSCROLL | + CBS_AUTOHSCROLL | CBS_NOINTEGRALHEIGHT /* | WS_CLIPSIBLINGS */; + if ( style & wxCB_READONLY ) + msStyle |= CBS_DROPDOWNLIST; + else if ( style & wxCB_SIMPLE ) + msStyle |= CBS_SIMPLE; // A list (shown always) and edit control + else + msStyle |= CBS_DROPDOWN; + + if ( style & wxCB_SORT ) + msStyle |= CBS_SORT; + + // and now create the MSW control + if ( !MSWCreateControl(_T("COMBOBOX"), msStyle) ) + return FALSE; + + SetSize(pos.x, pos.y, size.x, size.y); + + // A choice/combobox normally has a white background (or other, depending + // on global settings) rather than inheriting the parent's background colour. + SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW)); + + for ( int i = 0; i < n; i++ ) + { + Append(choices[i]); + } + + if ( !value.IsEmpty() ) + { + SetValue(value); + } + + // a (not read only) combobox is, in fact, 2 controls: the combobox itself + // and an edit control inside it and if we want to catch events from this + // edit control, we must subclass it as well + if ( !(style & wxCB_READONLY) ) + { + gs_wndprocEdit = (WXFARPROC)::SetWindowLong + ( + (HWND)GetEditHWND(), + GWL_WNDPROC, + (LPARAM)wxComboEditWndProc + ); + } + + return TRUE; +} + +// TODO: update and clear all this horrible mess (VZ) + void wxComboBox::SetValue(const wxString& value) { // If newlines are denoted by just 10, must stick 13 in front. @@ -157,7 +334,7 @@ void wxComboBox::SetValue(const wxString& value) } if (singletons > 0) { - char *tmp = new char[len + singletons + 1]; + wxChar *tmp = new wxChar[len + singletons + 1]; int j = 0; for (i = 0; i < len; i ++) { @@ -170,132 +347,112 @@ void wxComboBox::SetValue(const wxString& value) j ++; } tmp[j] = 0; - SetWindowText((HWND) GetHWND(), tmp); + SetWindowText(GetHwnd(), tmp); delete[] tmp; } else - SetWindowText((HWND) GetHWND(), (const char *)value); + SetWindowText(GetHwnd(), value); } // Clipboard operations void wxComboBox::Copy() { - HWND hWnd = (HWND) GetHWND(); + HWND hWnd = GetHwnd(); SendMessage(hWnd, WM_COPY, 0, 0L); } void wxComboBox::Cut() { - HWND hWnd = (HWND) GetHWND(); + HWND hWnd = GetHwnd(); SendMessage(hWnd, WM_CUT, 0, 0L); } void wxComboBox::Paste() { - HWND hWnd = (HWND) GetHWND(); + HWND hWnd = GetHwnd(); SendMessage(hWnd, WM_PASTE, 0, 0L); } -void wxComboBox::SetEditable(bool editable) +void wxComboBox::SetEditable(bool WXUNUSED(editable)) { // Can't implement in MSW? -// HWND hWnd = (HWND) GetHWND(); +// HWND hWnd = GetHwnd(); // SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L); } void wxComboBox::SetInsertionPoint(long pos) { -/* - HWND hWnd = (HWND) GetHWND(); + if ( GetWindowStyle() & wxCB_READONLY ) + return; + #ifdef __WIN32__ - SendMessage(hWnd, EM_SETSEL, pos, pos); - SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0); -#else - SendMessage(hWnd, EM_SETSEL, 0, MAKELPARAM(pos, pos)); -#endif - char *nothing = ""; - SendMessage(hWnd, EM_REPLACESEL, 0, (LPARAM)nothing); -*/ + HWND hWnd = GetHwnd(); + ::SendMessage(hWnd, CB_SETEDITSEL, 0, MAKELPARAM(pos, pos)); + HWND hEditWnd = (HWND) GetEditHWND() ; + if ( hEditWnd ) + { + // Scroll insertion point into view + SendMessage(hEditWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0); + // Why is this necessary? (Copied from wxTextCtrl::SetInsertionPoint) + SendMessage(hEditWnd, EM_REPLACESEL, 0, (LPARAM)_T("")); + } +#endif // __WIN32__ } void wxComboBox::SetInsertionPointEnd() { -/* - long pos = GetLastPosition(); - SetInsertionPoint(pos); -*/ + // setting insertion point doesn't make sense for read only comboboxes + if ( !(GetWindowStyle() & wxCB_READONLY) ) + { + long pos = GetLastPosition(); + SetInsertionPoint(pos); + } } long wxComboBox::GetInsertionPoint() const { -/* - DWORD Pos=(DWORD)SendMessage((HWND) GetHWND(), EM_GETSEL, 0, 0L); - return Pos&0xFFFF; -*/ - return 0; +#ifdef __WIN32__ + DWORD Pos=(DWORD)SendMessage(GetHwnd(), CB_GETEDITSEL, 0, 0L); + return Pos&0xFFFF; +#else + return 0; +#endif } long wxComboBox::GetLastPosition() const { -/* - HWND hWnd = (HWND) GetHWND(); + HWND hEditWnd = (HWND) GetEditHWND(); - // Will always return a number > 0 (according to docs) - int noLines = (int)SendMessage(hWnd, EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0L); - - // This gets the char index for the _beginning_ of the last line - int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)(noLines-1), (LPARAM)0L); - - // Get number of characters in the last line. We'll add this to the character + // Get number of characters in the last (only) line. We'll add this to the character // index for the last line, 1st position. - int lineLength = (int)SendMessage(hWnd, EM_LINELENGTH, (WPARAM)charIndex, (LPARAM)0L); + int lineLength = (int)SendMessage(hEditWnd, EM_LINELENGTH, (WPARAM) 0, (LPARAM)0L); - return (long)(charIndex + lineLength); -*/ - return 0; + return (long)(lineLength); } void wxComboBox::Replace(long from, long to, const wxString& value) { #if wxUSE_CLIPBOARD - HWND hWnd = (HWND) GetHWND(); - long fromChar = from; - long toChar = to; - - // Set selection and remove it -#ifdef __WIN32__ - SendMessage(hWnd, CB_SETEDITSEL, fromChar, toChar); -#else - SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)); -#endif - SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0); + Remove(from, to); // Now replace with 'value', by pasting. - wxSetClipboardData(wxDF_TEXT, (wxObject *)(const char *)value, 0, 0); + wxSetClipboardData(wxDF_TEXT, (wxObject *)(const wxChar *)value, 0, 0); // Paste into edit control - SendMessage(hWnd, WM_PASTE, (WPARAM)0, (LPARAM)0L); + SendMessage(GetHwnd(), WM_PASTE, (WPARAM)0, (LPARAM)0L); #endif } void wxComboBox::Remove(long from, long to) { - HWND hWnd = (HWND) GetHWND(); - long fromChar = from; - long toChar = to; - - // Cut all selected text -#ifdef __WIN32__ - SendMessage(hWnd, CB_SETEDITSEL, fromChar, toChar); -#else - SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)); -#endif - SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0); + // Set selection and remove it + SetSelection(from, to); + SendMessage(GetHwnd(), WM_CUT, (WPARAM)0, (LPARAM)0); } void wxComboBox::SetSelection(long from, long to) { - HWND hWnd = (HWND) GetHWND(); + HWND hWnd = GetHwnd(); long fromChar = from; long toChar = to; // if from and to are both -1, it means @@ -306,14 +463,60 @@ void wxComboBox::SetSelection(long from, long to) fromChar = 0; toChar = -1; } - + + if ( #ifdef __WIN32__ - SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)fromChar, (LPARAM)toChar); -// SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0); -#else - // WPARAM is 0: selection is scrolled into view - SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)); + SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)) +#else // Win16 + SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)fromChar, (LPARAM)toChar) #endif + == CB_ERR ) + { + wxLogDebug(_T("CB_SETEDITSEL failed")); + } +} + +void wxComboBox::DoMoveWindow(int x, int y, int width, int height) +{ + // here is why this is necessary: if the width is negative, the combobox + // window proc makes the window of the size width*height instead of + // interpreting height in the usual manner (meaning the height of the drop + // down list - usually the height specified in the call to MoveWindow() + // will not change the height of combo box per se) + // + // this behaviour is not documented anywhere, but this is just how it is + // here (NT 4.4) and, anyhow, the check shouldn't hurt - however without + // the check, constraints/sizers using combos may break the height + // constraint will have not at all the same value as expected + if ( width < 0 ) + return; + + int cx, cy; + wxGetCharSize(GetHWND(), &cx, &cy, &GetFont()); + + // what should the height of the drop down list be? we choose 10 items by + // default and also 10 items max (if we always use n, the list will never + // have vertical scrollbar) + int n = GetCount(); + if ( !n || (n > 10) ) + n = 10; + + height = (n + 1)* EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy); + + wxControl::DoMoveWindow(x, y, width, height); +} + +wxSize wxComboBox::DoGetBestSize() const +{ + // the choice calculates the horz size correctly, but not the vertical + // component: correct it + wxSize size = wxChoice::DoGetBestSize(); + + int cx, cy; + wxGetCharSize(GetHWND(), &cx, &cy, &GetFont()); + size.y = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy); + + return size; } #endif