X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f1df09276caf8575eed4e9bf2689c69903a749a9..6342bd1ab36c1957684c00d408d09fba65d33db6:/src/msw/combobox.cpp diff --git a/src/msw/combobox.cpp b/src/msw/combobox.cpp index d250452a79..cf839f4748 100644 --- a/src/msw/combobox.cpp +++ b/src/msw/combobox.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: combobox.cpp +// Name: msw/combobox.cpp // Purpose: wxComboBox class // Author: Julian Smart // Modified by: @@ -9,6 +9,14 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + #ifdef __GNUG__ #pragma implementation "combobox.h" #endif @@ -27,11 +35,164 @@ #endif #include "wx/combobox.h" +#include "wx/brush.h" #include "wx/clipbrd.h" #include "wx/msw/private.h" +#if wxUSE_TOOLTIPS + #ifndef __GNUWIN32_OLD__ + #include + #endif + #include "wx/tooltip.h" +#endif // wxUSE_TOOLTIPS + +// ---------------------------------------------------------------------------- +// wxWin macros +// ---------------------------------------------------------------------------- + IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl) +// ---------------------------------------------------------------------------- +// 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) +{ + 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); +} + +WXHBRUSH wxComboBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor, + WXUINT message, + WXWPARAM wParam, + WXLPARAM lParam) +{ +#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(); +} + +// ---------------------------------------------------------------------------- +// wxComboBox +// ---------------------------------------------------------------------------- + +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)) { switch ( param ) @@ -62,6 +223,24 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) return FALSE; } +WXHWND wxComboBox::GetEditHWND() const +{ + // 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, @@ -71,90 +250,61 @@ bool wxComboBox::Create(wxWindow *parent, wxWindowID id, const wxValidator& validator, const wxString& name) { - SetName(name); -#if wxUSE_VALIDATORS - SetValidator(validator); -#endif // wxUSE_VALIDATORS - if (parent) parent->AddChild(this); -// SetBackgroundColour(parent->GetBackgroundColour()) ; - - // 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)); - - SetForegroundColour(parent->GetForegroundColour()) ; - - 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 | WS_TABSTOP | WS_VISIBLE | - CBS_AUTOHSCROLL | CBS_NOINTEGRALHEIGHT; - - if (m_windowStyle & wxCB_READONLY) - msStyle |= CBS_DROPDOWNLIST; - else if (m_windowStyle & wxCB_SIMPLE) - msStyle |= CBS_SIMPLE; // A list (shown always) and edit control - 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 || wxStyleHasBorder(m_windowStyle) ) - msStyle |= WS_BORDER; - - m_hWnd = (WXHWND)::CreateWindowEx(exStyle, wxT("COMBOBOX"), NULL, - msStyle, - 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId, - wxGetInstance(), NULL); - - wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create combobox") ); - -/* -#if wxUSE_CTL3D - if (want3D) - { - Ctl3dSubclassCtl(wx_combo); - m_useCtl3D = TRUE; - } -#endif -*/ - - // Subclass again for purposes of dialog editing mode - SubclassWin(m_hWnd); - - SetFont(parent->GetFont()); - int i; - for (i = 0; i < n; i++) - { - Append(choices[i]); - } + // 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]); + } - SetSelection(i); + if ( !value.IsEmpty() ) + { + SetValue(value); + } - SetSize(x, y, width, height); - 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; + 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. @@ -216,54 +366,46 @@ void wxComboBox::SetEditable(bool editable) void wxComboBox::SetInsertionPoint(long pos) { -/* - HWND hWnd = GetHwnd(); #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)); + 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) + static const wxChar *nothing = _T(""); + SendMessage(hEditWnd, EM_REPLACESEL, 0, (LPARAM)nothing); + } #endif - char *nothing = ""; - SendMessage(hWnd, EM_REPLACESEL, 0, (LPARAM)nothing); -*/ } void wxComboBox::SetInsertionPointEnd() { -/* long pos = GetLastPosition(); SetInsertionPoint(pos); -*/ } long wxComboBox::GetInsertionPoint() const { -/* - DWORD Pos=(DWORD)SendMessage(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 = 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) @@ -329,14 +471,30 @@ void wxComboBox::SetSelection(long from, long to) 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 ) + if ( !n || (n > 10) ) n = 10; - height = n * EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy); + height = (n + 1)* EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy); wxControl::DoMoveWindow(x, y, width, height); }