X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/fd3f686c274a264e89ea97505350a82c1134f307..00c813596e3eefdd028365acf9542355937e5531:/src/msw/choice.cpp?ds=sidebyside diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp index 9688accf39..6c9206a796 100644 --- a/src/msw/choice.cpp +++ b/src/msw/choice.cpp @@ -2,349 +2,403 @@ // Name: choice.cpp // Purpose: wxChoice // Author: Julian Smart -// Modified by: +// Modified by: Vadim Zeitlin to derive from wxChoiceBase // Created: 04/01/98 // RCS-ID: $Id$ // Copyright: (c) Julian Smart and Markus Holzem // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + #ifdef __GNUG__ -#pragma implementation "choice.h" + #pragma implementation "choice.h" #endif // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif +#if wxUSE_CHOICE + #ifndef WX_PRECOMP -#include "wx/choice.h" + #include "wx/choice.h" + #include "wx/utils.h" + #include "wx/log.h" + #include "wx/brush.h" + #include "wx/settings.h" #endif #include "wx/msw/private.h" -#if !USE_SHARED_LIBRARY IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl) -#endif -bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) +// ============================================================================ +// implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// creation +// ---------------------------------------------------------------------------- + +bool wxChoice::Create(wxWindow *parent, + wxWindowID id, + const wxPoint& pos, + const wxSize& size, + int n, const wxString choices[], + long style, + const wxValidator& validator, + const wxString& name) { - if (param == CBN_SELCHANGE) - { - wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId); - event.SetInt(GetSelection()); - event.SetEventObject(this); - event.SetString(copystring(GetStringSelection())); - ProcessCommand(event); - delete[] event.GetString(); - return TRUE; - } - else return FALSE; -} + if ( !CreateControl(parent, id, pos, size, style, validator, name) ) + return FALSE; -bool wxChoice::Create(wxWindow *parent, wxWindowID id, - const wxPoint& pos, - const wxSize& size, - int n, const wxString choices[], - long style, - const wxValidator& validator, - const wxString& name) -{ - SetName(name); - SetValidator(validator); - if (parent) parent->AddChild(this); - SetBackgroundColour(parent->GetBackgroundColour()) ; - SetForegroundColour(parent->GetForegroundColour()) ; - m_noStrings = n; - - m_windowStyle = style; - - 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 | CBS_DROPDOWNLIST | WS_HSCROLL | WS_VSCROLL - | WS_TABSTOP | WS_VISIBLE; - 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 || wxStyleHasBorder(m_windowStyle) ) - msStyle |= WS_BORDER; - - m_hWnd = (WXHWND)::CreateWindowEx(exStyle, "COMBOBOX", NULL, - msStyle, - 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId, - wxGetInstance(), NULL); - - wxCHECK_MSG( m_hWnd, FALSE, "Failed to create combobox" ); - -/* -#if CTL3D - if (want3D) - { - m_useCtl3D = TRUE; - Ctl3dSubclassCtl(wx_combo); // Does CTL3D affect the combobox? I think not. - } -#endif -*/ + long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_TABSTOP | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL /* | WS_CLIPSIBLINGS */; + if ( style & wxCB_SORT ) + msStyle |= CBS_SORT; + + if ( style & wxCLIP_SIBLINGS ) + msStyle |= WS_CLIPSIBLINGS; + + + // Experience shows that wxChoice vs. wxComboBox distinction confuses + // quite a few people - try to help them + wxASSERT_MSG( !(style & wxCB_DROPDOWN) && + !(style & wxCB_READONLY) && + !(style & wxCB_SIMPLE), + _T("this style flag is ignored by wxChoice, you ") + _T("probably want to use a wxComboBox") ); - // Subclass again for purposes of dialog editing mode - SubclassWin(m_hWnd); + if ( !MSWCreateControl(wxT("COMBOBOX"), msStyle) ) + return FALSE; - SetFont(* parent->GetFont()); + // 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)); - int i; - for (i = 0; i < n; i++) - { - Append(choices[i]); - } - SetSelection(n); + for ( int i = 0; i < n; i++ ) + { + Append(choices[i]); + } + + SetSize(pos.x, pos.y, size.x, size.y); - SetSize(x, y, width, height); + return TRUE; +} - return TRUE; +wxChoice::~wxChoice() +{ + Free(); } -void wxChoice::Append(const wxString& item) +// ---------------------------------------------------------------------------- +// adding/deleting items to/from the list +// ---------------------------------------------------------------------------- + +int wxChoice::DoAppend(const wxString& item) { - SendMessage((HWND) GetHWND(), CB_ADDSTRING, 0, (LONG)(const char *)item); + int n = (int)SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LONG)item.c_str()); + if ( n == CB_ERR ) + { + wxLogLastError(wxT("SendMessage(CB_ADDSTRING)")); + } - m_noStrings ++; + return n; } void wxChoice::Delete(int n) { - m_noStrings = (int)SendMessage((HWND) GetHWND(), CB_DELETESTRING, n, 0); + wxCHECK_RET( n < GetCount(), wxT("invalid item index in wxChoice::Delete") ); + + if ( HasClientObjectData() ) + { + delete GetClientObject(n); + } + + SendMessage(GetHwnd(), CB_DELETESTRING, n, 0); } -void wxChoice::Clear(void) +void wxChoice::Clear() { - SendMessage((HWND) GetHWND(), CB_RESETCONTENT, 0, 0); + Free(); + + SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0); +} - m_noStrings = 0; +void wxChoice::Free() +{ + if ( HasClientObjectData() ) + { + size_t count = GetCount(); + for ( size_t n = 0; n < count; n++ ) + { + delete GetClientObject(n); + } + } } +// ---------------------------------------------------------------------------- +// selection +// ---------------------------------------------------------------------------- -int wxChoice::GetSelection(void) const +int wxChoice::GetSelection() const { - return (int)SendMessage((HWND) GetHWND(), CB_GETCURSEL, 0, 0); + return (int)SendMessage(GetHwnd(), CB_GETCURSEL, 0, 0); } void wxChoice::SetSelection(int n) { - SendMessage((HWND) GetHWND(), CB_SETCURSEL, n, 0); + SendMessage(GetHwnd(), CB_SETCURSEL, n, 0); +} + +// ---------------------------------------------------------------------------- +// string list functions +// ---------------------------------------------------------------------------- + +int wxChoice::GetCount() const +{ + return (int)SendMessage(GetHwnd(), CB_GETCOUNT, 0, 0); } int wxChoice::FindString(const wxString& s) const { #if defined(__WATCOMC__) && defined(__WIN386__) - // For some reason, Watcom in WIN386 mode crashes in the CB_FINDSTRINGEXACT message. - // Do it the long way instead. - char buf[512]; - for (int i = 0; i < Number(); i++) - { - int len = (int)SendMessage((HWND) GetHWND(), CB_GETLBTEXT, i, (LPARAM)(LPSTR)buf); - buf[len] = 0; - if (strcmp(buf, (const char *)s) == 0) - return i; - } - return -1; -#else - int pos = (int)SendMessage((HWND) GetHWND(), CB_FINDSTRINGEXACT, (WPARAM)-1, (LPARAM)(LPSTR)(const char *)s); - if (pos == LB_ERR) - return -1; - else - return pos; + // For some reason, Watcom in WIN386 mode crashes in the CB_FINDSTRINGEXACT message. + // wxChoice::Do it the long way instead. + int count = GetCount(); + for ( int i = 0; i < count; i++ ) + { + // as CB_FINDSTRINGEXACT is case insensitive, be case insensitive too + if ( GetString(i).IsSameAs(s, FALSE) ) + return i; + } + + return wxNOT_FOUND; +#else // !Watcom + int pos = (int)SendMessage(GetHwnd(), CB_FINDSTRINGEXACT, + (WPARAM)-1, (LPARAM)s.c_str()); + + return pos == LB_ERR ? wxNOT_FOUND : pos; +#endif // Watcom/!Watcom +} + +void wxChoice::SetString(int WXUNUSED(n), const wxString& WXUNUSED(s)) +{ + wxFAIL_MSG(wxT("not implemented")); + +#if 0 // should do this, but no Insert() so far + Delete(n); + Insert(n + 1, s); #endif } wxString wxChoice::GetString(int n) const { - int len = (int)SendMessage((HWND) GetHWND(), CB_GETLBTEXT, n, (long)wxBuffer); - wxBuffer[len] = 0; - return wxString(wxBuffer); + size_t len = (size_t)::SendMessage(GetHwnd(), CB_GETLBTEXTLEN, n, 0); + wxString str; + if (len) { + if ( ::SendMessage(GetHwnd(), CB_GETLBTEXT, n, + (LPARAM)str.GetWriteBuf(len)) == CB_ERR ) { + wxLogLastError(wxT("SendMessage(CB_GETLBTEXT)")); + } + str.UngetWriteBuf(); + } + + return str; } -void wxChoice::SetSize(int x, int y, int width, int height, int sizeFlags) +// ---------------------------------------------------------------------------- +// client data +// ---------------------------------------------------------------------------- + +void wxChoice::DoSetItemClientData( int n, void* clientData ) { - int currentX, currentY; - GetPosition(¤tX, ¤tY); - - int x1 = x; - int y1 = y; - int w1 = width; - int h1 = height; - - if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE)) - x1 = currentX; - if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE)) - y1 = currentY; - - AdjustForParentClientOrigin(x1, y1, sizeFlags); - - // If we're prepared to use the existing size, then... - if (width == -1 && height == -1 && ((sizeFlags & wxSIZE_AUTO) != wxSIZE_AUTO)) - { - GetSize(&w1, &h1); - } - - int cx; // button font dimensions - int cy; - wxGetCharSize(GetHWND(), &cx, &cy, GetFont()); - - int control_width, control_height; - - // Ignore height parameter because height doesn't - // mean 'initially displayed' height, it refers to the - // drop-down menu as well. The wxWindows interpretation - // is different; also, getting the size returns the - // _displayed_ size (NOT the drop down menu size) - // so setting-getting-setting size would not work. - h1 = -1; - - // Deal with default size (using -1 values) - if (width <= 0) - { - // Find the longest string - if (m_noStrings == 0) + if ( SendMessage(GetHwnd(), CB_SETITEMDATA, n, (LPARAM)clientData) == CB_ERR ) { - control_width = 100; + wxLogLastError(wxT("CB_SETITEMDATA")); } - else +} + +void* wxChoice::DoGetItemClientData( int n ) const +{ + LPARAM rc = SendMessage(GetHwnd(), CB_GETITEMDATA, n, 0); + if ( rc == CB_ERR ) { - int len, ht; - int longest = 0; - int i; - for (i = 0; i < m_noStrings; i++) - { - wxString str(GetString(i)); - GetTextExtent(str, &len, &ht, NULL, NULL,GetFont()); - if ( len > longest) - longest = len; - } + wxLogLastError(wxT("CB_GETITEMDATA")); - control_width = longest + cx*5; + // unfortunately, there is no way to return an error code to the user + rc = (LPARAM) NULL; } - } - else - { - // If non-default width... - control_width = w1; - } - - - // Choice drop-down list depends on number of items (limited to 10) - if (h1 <= 0) - { - if (m_noStrings == 0) - h1 = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*10; - else - h1 = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*(wxMin(10, m_noStrings) + 1); - } - control_height = h1; + return (void *)rc; +} - // Calculations may have made text size too small - if (control_height <= 0) - control_height = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy); +void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData ) +{ + DoSetItemClientData(n, clientData); +} - if (control_width <= 0) - control_width = 100; +wxClientData* wxChoice::DoGetItemClientObject( int n ) const +{ + return (wxClientData *)DoGetItemClientData(n); +} + +// ---------------------------------------------------------------------------- +// wxMSW specific helpers +// ---------------------------------------------------------------------------- + +void wxChoice::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; + + wxControl::DoMoveWindow(x, y, width, height); +} - MoveWindow((HWND)GetHWND(), x1, y1, - control_width, control_height, TRUE); +void wxChoice::DoSetSize(int x, int y, + int width, int WXUNUSED(height), + int sizeFlags) +{ + // Ignore height parameter because height doesn't mean 'initially + // displayed' height, it refers to the drop-down menu as well. The + // wxWindows interpretation is different; also, getting the size returns + // the _displayed_ size (NOT the drop down menu size) so + // setting-getting-setting size would not work. + wxControl::DoSetSize(x, y, width, -1, sizeFlags); } -WXHBRUSH wxChoice::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor, - WXUINT message, WXWPARAM wParam, WXLPARAM lParam) +wxSize wxChoice::DoGetBestSize() const { - return 0; + // find the widest string + int wLine; + int wChoice = 0; + int nItems = GetCount(); + for ( int i = 0; i < nItems; i++ ) + { + wxString str(GetString(i)); + GetTextExtent(str, &wLine, NULL); + if ( wLine > wChoice ) + wChoice = wLine; + } + + // give it some reasonable default value if there are no strings in the + // list + if ( wChoice == 0 ) + wChoice = 100; + + // the combobox should be larger than the widest string + int cx, cy; + wxGetCharSize(GetHWND(), &cx, &cy, &GetFont()); + + wChoice += 5*cx; + + // Choice drop-down list depends on number of items (limited to 10) + size_t nStrings = nItems == 0 ? 10 : wxMin(10, nItems) + 1; + int hChoice = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*nStrings; + + return wxSize(wChoice, hChoice); } long wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) { - switch (nMsg) + if ( nMsg == WM_LBUTTONUP ) { -/* - case WM_GETDLGCODE: - { - if (GetWindowStyleFlag() & wxPROCESS_ENTER) - return DLGC_WANTALLKEYS; - break; - } -*/ -/* - case WM_CHAR: // Always an ASCII character - { - if (wParam == VK_RETURN) - { - wxCommandEvent event(wxEVENT_TYPE_TEXT_ENTER_COMMAND); - event.commandString = ((wxTextCtrl *)item)->GetValue(); - event.eventObject = item; - item->ProcessCommand(event); - return FALSE; - } - break; - } -*/ - case WM_LBUTTONUP: - { int x = (int)LOWORD(lParam); int y = (int)HIWORD(lParam); - // Ok, this is truly weird, but if a panel with a wxChoice loses the - // focus, then you get a *fake* WM_LBUTTONUP message - // with x = 65535 and y = 65535. - // Filter out this nonsense. - if (x == 65535 && y == 65535) - return Default(); - break; - } + // Ok, this is truly weird, but if a panel with a wxChoice loses the + // focus, then you get a *fake* WM_LBUTTONUP message with x = 65535 and + // y = 65535. Filter out this nonsense. + // + // VZ: I'd like to know how to reproduce this please... + if ( x == 65535 && y == 65535 ) + return 0; } - return wxWindow::MSWWindowProc(nMsg, wParam, lParam); + return wxWindow::MSWWindowProc(nMsg, wParam, lParam); } -wxString wxChoice::GetStringSelection (void) const +bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) { - int sel = GetSelection (); - if (sel > -1) - return wxString(this->GetString (sel)); - else - return wxString(""); -} + if ( param != CBN_SELCHANGE) + { + // "selection changed" is the only event we're after + return FALSE; + } -bool wxChoice::SetStringSelection (const wxString& s) -{ - int sel = FindString (s); - if (sel > -1) + int n = GetSelection(); + if (n > -1) { - SetSelection (sel); - return TRUE; + wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId); + event.SetInt(n); + event.SetEventObject(this); + event.SetString(GetStringSelection()); + if ( HasClientObjectData() ) + event.SetClientObject( GetClientObject(n) ); + else if ( HasClientUntypedData() ) + event.SetClientData( GetClientData(n) ); + ProcessCommand(event); } - else - return FALSE; + + return TRUE; } -void wxChoice::Command(wxCommandEvent & event) +WXHBRUSH wxChoice::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor), +#if wxUSE_CTL3D + WXUINT message, + WXWPARAM wParam, + WXLPARAM lParam +#else + WXUINT WXUNUSED(message), + WXWPARAM WXUNUSED(wParam), + WXLPARAM WXUNUSED(lParam) +#endif + ) { - SetSelection (event.GetInt()); - ProcessCommand (event); -} +#if wxUSE_CTL3D + if ( m_useCtl3D ) + { + HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam); + return (WXHBRUSH) hbrush; + } +#endif // wxUSE_CTL3D + HDC hdc = (HDC)pDC; + if (GetParent()->GetTransparentBackground()) + SetBkMode(hdc, TRANSPARENT); + else + SetBkMode(hdc, OPAQUE); + wxColour colBack = GetBackgroundColour(); + + if (!IsEnabled()) + colBack = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE); + + ::SetBkColor(hdc, wxColourToRGB(colBack)); + ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour())); + + wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID); + + return (WXHBRUSH)brush->GetResourceHandle(); +} +#endif // wxUSE_CHOICE