X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/197dd9af26230291b156c504506fed47a4d7420b..7848088476db284a94f19eeb24411b45d676ac46:/src/msw/tooltip.cpp?ds=sidebyside diff --git a/src/msw/tooltip.cpp b/src/msw/tooltip.cpp index 9561c8e776..0ab90686a8 100644 --- a/src/msw/tooltip.cpp +++ b/src/msw/tooltip.cpp @@ -6,7 +6,7 @@ // Created: 31.01.99 // RCS-ID: $Id$ // Copyright: (c) 1999 Vadim Zeitlin -// Licence: wxWindows license +// Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -32,34 +32,72 @@ #include "wx/tooltip.h" #include "wx/msw/private.h" -#if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS) -#include -#endif +// include "properly" +#include "wx/msw/wrapcctl.h" + +// VZ: normally, the trick with subclassing the tooltip control and processing +// TTM_WINDOWFROMPOINT should work but, somehow, it doesn't. I leave the +// code here for now (but it's not compiled) in case we need it later. +// +// For now I use an ugly workaround and process TTN_NEEDTEXT directly in +// radio button wnd proc - fixing TTM_WINDOWFROMPOINT code would be nice +// because it would then work for all controls, not only radioboxes but for +// now I don't understand what's wrong with it... +#define wxUSE_TTM_WINDOWFROMPOINT 0 + +// ---------------------------------------------------------------------------- +// global variables +// ---------------------------------------------------------------------------- + +// the tooltip parent window +WXHWND wxToolTip::ms_hwndTT = (WXHWND)NULL; + +#if wxUSE_TTM_WINDOWFROMPOINT + +// the tooltip window proc +static WNDPROC gs_wndprocToolTip = (WNDPROC)NULL; + +#endif // wxUSE_TTM_WINDOWFROMPOINT // ---------------------------------------------------------------------------- // private classes // ---------------------------------------------------------------------------- -// a simple wrapper around TOOLINFO Win32 structure -#pragma warning( disable : 4097 ) +// a wrapper around TOOLINFO Win32 structure +#ifdef __VISUALC__ + #pragma warning( disable : 4097 ) // we inherit from a typedef - so what? +#endif + class wxToolInfo : public TOOLINFO { public: - wxToolInfo(wxWindow *win) + wxToolInfo(HWND hwndOwner) { // initialize all members -#if defined( __GNUWIN32__ ) && !defined(wxUSE_NORLANDER_HEADERS) - memset(this, 0, sizeof(TOOLINFO)); -#else ::ZeroMemory(this, sizeof(TOOLINFO)); -#endif + // the structure TOOLINFO has been extended with a 4 byte field in + // version 4.70 of comctl32.dll and if we compile on a newer machine + // but run on one with the old version of comctl32, nothing will work + // because the library will detect that we rely on a more recent + // version of it. So we always use the old size - if we ever start + // using our lParam member, we'd have to check for comctl32 version + // during run-time +#if _WIN32_IE >= 0x0300 + cbSize = sizeof(TOOLINFO) - sizeof(LPARAM); +#else // old headers cbSize = sizeof(TOOLINFO); +#endif // compile-time comctl32.dll version + + hwnd = hwndOwner; uFlags = TTF_IDISHWND; - uId = (UINT)win->GetHWND(); + uId = (UINT)hwndOwner; } }; -#pragma warning( default : 4097 ) + +#ifdef __VISUALC__ + #pragma warning( default : 4097 ) +#endif // ---------------------------------------------------------------------------- // private functions @@ -76,57 +114,68 @@ inline LRESULT SendTooltipMessage(WXHWND hwnd, } // send a message to all existing tooltip controls -static void SendTooltipMessageToAll(UINT msg, WPARAM wParam, LPARAM lParam) +static void SendTooltipMessageToAll(WXHWND hwnd, + UINT msg, + WPARAM wParam, + LPARAM lParam) { - // NB: it might be somewhat easier to maintain a list of all existing - // wxToolTip controls (put them there in ctor, delete from the list - // in dtor) - may be it's worth doing it this way? OTOH, typical - // application won't have many top level windows, so iterating over all - // of them shouldnt' take much time neither... - - // iterate over all top level windows and send message to the tooltip - // control of each and every of them (or more precisely to all dialogs and - // frames) - wxDialog *dialog = NULL; - wxFrame *frame = NULL; - - wxNode *node = wxTopLevelWindows.First(); - while ( node ) + (void)SendTooltipMessage((WXHWND)hwnd, msg, wParam, (void *)lParam); +} + +// ============================================================================ +// implementation +// ============================================================================ + +#if wxUSE_TTM_WINDOWFROMPOINT + +// ---------------------------------------------------------------------------- +// window proc for our tooltip control +// ---------------------------------------------------------------------------- + +LRESULT APIENTRY wxToolTipWndProc(HWND hwndTT, + UINT msg, + WPARAM wParam, + LPARAM lParam) +{ + if ( msg == TTM_WINDOWFROMPOINT ) { - wxWindow *win = (wxWindow *)node->Data(); + LPPOINT ppt = (LPPOINT)lParam; - node = node->Next(); + // the window on which event occured + HWND hwnd = ::WindowFromPoint(*ppt); - if ( win->IsKindOf(CLASSINFO(wxFrame)) ) - { - frame = (wxFrame *)win; - dialog = NULL; - } - else if ( win->IsKindOf(CLASSINFO(wxDialog)) ) + OutputDebugString("TTM_WINDOWFROMPOINT: "); + OutputDebugString(wxString::Format("0x%08x => ", hwnd)); + + // return a HWND corresponding to a wxWindow because only wxWindows are + // associated with tooltips using TTM_ADDTOOL + wxWindow *win = wxGetWindowFromHWND((WXHWND)hwnd); + + if ( win ) { - dialog = (wxDialog *)win; - frame = NULL; + hwnd = GetHwndOf(win); + OutputDebugString(wxString::Format("0x%08x\r\n", hwnd)); + +#if 0 + // modify the point too! + RECT rect; + GetWindowRect(hwnd, &rect); + + ppt->x = (rect.right - rect.left) / 2; + ppt->y = (rect.bottom - rect.top) / 2; +#endif // 0 + return (LRESULT)hwnd; } else { - // skip this strange top level window - continue; - } - - wxASSERT_MSG( dialog || frame, _T("logic error") ); - - WXHWND hwndTT = frame ? frame->GetToolTipCtrl() - : dialog->GetToolTipCtrl(); - if ( hwndTT ) - { - (void)SendTooltipMessage(hwndTT, msg, wParam, (void *)lParam); + OutputDebugString("no window\r\n"); } } + + return ::CallWindowProc(CASTWNDPROC gs_wndprocToolTip, hwndTT, msg, wParam, lParam); } -// ============================================================================ -// implementation -// ============================================================================ +#endif // wxUSE_TTM_WINDOWFROMPOINT // ---------------------------------------------------------------------------- // static functions @@ -134,12 +183,13 @@ static void SendTooltipMessageToAll(UINT msg, WPARAM wParam, LPARAM lParam) void wxToolTip::Enable(bool flag) { - SendTooltipMessageToAll(TTM_ACTIVATE, flag, 0); + SendTooltipMessageToAll(ms_hwndTT, TTM_ACTIVATE, flag, 0); } void wxToolTip::SetDelay(long milliseconds) { - SendTooltipMessageToAll(TTM_SETDELAYTIME, TTDT_INITIAL, milliseconds); + SendTooltipMessageToAll(ms_hwndTT, TTM_SETDELAYTIME, + TTDT_INITIAL, milliseconds); } // --------------------------------------------------------------------------- @@ -149,60 +199,30 @@ void wxToolTip::SetDelay(long milliseconds) // create the tooltip ctrl for our parent frame if it doesn't exist yet WXHWND wxToolTip::GetToolTipCtrl() { - // find either parent dialog or parent frame - tooltip controls are managed - // by these 2 classes only (it doesn't make sense to create one tooltip per - // each and every wxWindow) - wxFrame *frame = NULL; - wxDialog *dialog = NULL; - - wxWindow *parent = m_window; - while ( parent ) + if ( !ms_hwndTT ) { - if ( parent->IsKindOf(CLASSINFO(wxFrame)) ) - { - frame = (wxFrame *)parent; - - break; - } - else if ( parent->IsKindOf(CLASSINFO(wxDialog)) ) - { - dialog = (wxDialog *)parent; - - break; - } - - parent = parent->GetParent(); + ms_hwndTT = (WXHWND)::CreateWindow(TOOLTIPS_CLASS, + (LPCTSTR)NULL, + TTS_ALWAYSTIP, + CW_USEDEFAULT, CW_USEDEFAULT, + CW_USEDEFAULT, CW_USEDEFAULT, + NULL, (HMENU)NULL, + wxGetInstance(), + NULL); + if ( ms_hwndTT ) + { + HWND hwnd = (HWND)ms_hwndTT; + SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 0, 0, + SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE); + +#if wxUSE_TTM_WINDOWFROMPOINT + // subclass the newly created control + gs_wndprocToolTip = wxSetWindowProc(hwnd, wxToolTipWndProc); +#endif // wxUSE_TTM_WINDOWFROMPOINT + } } - wxCHECK_MSG( frame || dialog, 0, - _T("can't create tooltip control outside a frame or a dialog") ); - - HWND hwndTT = (HWND)(frame ? frame->GetToolTipCtrl() - : dialog->GetToolTipCtrl()); - if ( !hwndTT ) - { - hwndTT = ::CreateWindow(TOOLTIPS_CLASS, - (LPSTR)NULL, - TTS_ALWAYSTIP, - CW_USEDEFAULT, CW_USEDEFAULT, - CW_USEDEFAULT, CW_USEDEFAULT, - (HWND)parent->GetHWND(), (HMENU)NULL, - wxGetInstance(), NULL); - - if ( hwndTT ) - { - if ( frame ) - frame->SetToolTipCtrl((WXHWND)hwndTT); - else - dialog->SetToolTipCtrl((WXHWND)hwndTT); - } - else - { - wxLogSysError(_("Can not create tooltip control")); - } - } - - return (WXHWND)hwndTT; + return ms_hwndTT; } void wxToolTip::RelayEvent(WXMSG *msg) @@ -214,6 +234,8 @@ void wxToolTip::RelayEvent(WXMSG *msg) // ctor & dtor // ---------------------------------------------------------------------------- +IMPLEMENT_ABSTRACT_CLASS(wxToolTip, wxObject) + wxToolTip::wxToolTip(const wxString &tip) : m_text(tip) { @@ -235,34 +257,136 @@ void wxToolTip::Remove() // remove this tool from the tooltip control if ( m_window ) { - wxToolInfo ti(m_window); + wxToolInfo ti(GetHwndOf(m_window)); (void)SendTooltipMessage(GetToolTipCtrl(), TTM_DELTOOL, 0, &ti); } } +void wxToolTip::Add(WXHWND hWnd) +{ + HWND hwnd = (HWND)hWnd; + + wxToolInfo ti(hwnd); + + // another possibility would be to specify LPSTR_TEXTCALLBACK here as we + // store the tooltip text ourselves anyhow, and provide it in response to + // TTN_NEEDTEXT (sent via WM_NOTIFY), but then we would be limited to 79 + // character tooltips as this is the size of the szText buffer in + // NMTTDISPINFO struct -- and setting the tooltip here we can have tooltips + // of any length + ti.hwnd = hwnd; + ti.lpszText = (wxChar *)m_text.c_str(); // const_cast + + if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, 0, &ti) ) + { + wxLogDebug(_T("Failed to create the tooltip '%s'"), m_text.c_str()); + } + else + { + // check for multiline toopltip + int index = m_text.Find(_T('\n')); + + if ( index != wxNOT_FOUND ) + { +#ifdef TTM_SETMAXTIPWIDTH + if ( wxTheApp->GetComCtl32Version() >= 470 ) + { + // use TTM_SETMAXTIPWIDTH to make tooltip multiline using the + // extent of its first line as max value + HFONT hfont = (HFONT)SendTooltipMessage(GetToolTipCtrl(), + WM_GETFONT, + 0, 0); + if ( !hfont ) + { + hfont = (HFONT)GetStockObject(DEFAULT_GUI_FONT); + if ( !hfont ) + { + wxLogLastError(wxT("GetStockObject(DEFAULT_GUI_FONT)")); + } + } + + MemoryHDC hdc; + if ( !hdc ) + { + wxLogLastError(wxT("CreateCompatibleDC(NULL)")); + } + + if ( !SelectObject(hdc, hfont) ) + { + wxLogLastError(wxT("SelectObject(hfont)")); + } + + SIZE sz; + if ( !GetTextExtentPoint(hdc, m_text, index, &sz) ) + { + wxLogLastError(wxT("GetTextExtentPoint")); + } + + SendTooltipMessage(GetToolTipCtrl(), TTM_SETMAXTIPWIDTH, + 0, (void *)sz.cx); + } +#endif // comctl32.dll >= 4.70 + + // replace the '\n's with spaces because otherwise they appear as + // unprintable characters in the tooltip string + m_text.Replace(_T("\n"), _T(" ")); + } + } +} + void wxToolTip::SetWindow(wxWindow *win) { Remove(); m_window = win; + // add the window itself if ( m_window ) { - wxToolInfo ti(m_window); - - // as we store our text anyhow, it seems useless to waste system memory - // by asking the tooltip ctrl to remember it too - instead it will send - // us TTN_NEEDTEXT (via WM_NOTIFY) when it is about to be shown - ti.hwnd = (HWND)m_window->GetHWND(); - ti.lpszText = LPSTR_TEXTCALLBACK; - // instead of: ti.lpszText = (char *)m_text.c_str(); + Add(m_window->GetHWND()); + } +#if !defined(__WXUNIVERSAL__) + // and all of its subcontrols (e.g. radiobuttons in a radiobox) as well + wxControl *control = wxDynamicCast(m_window, wxControl); + if ( control ) + { + const wxArrayLong& subcontrols = control->GetSubcontrols(); + size_t count = subcontrols.GetCount(); + for ( size_t n = 0; n < count; n++ ) + { + int id = subcontrols[n]; + HWND hwnd = GetDlgItem(GetHwndOf(m_window), id); + if ( !hwnd ) + { + // may be it's a child of parent of the control, in fact? + // (radiobuttons are subcontrols, i.e. children of the radiobox + // for wxWindows but are its siblings at Windows level) + hwnd = GetDlgItem(GetHwndOf(m_window->GetParent()), id); + } + + // must have it by now! + wxASSERT_MSG( hwnd, _T("no hwnd for subcontrol?") ); + + Add((WXHWND)hwnd); + } + } - if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, 0, &ti) ) + // VZ: it's ugly to do it here, but I don't want any major changes right + // now, later we will probably want to have wxWindow::OnGotToolTip() or + // something like this where the derived class can do such things + // itself instead of wxToolTip "knowing" about them all + wxComboBox *combo = wxDynamicCast(control, wxComboBox); + if ( combo ) + { + WXHWND hwndComboEdit = combo->GetWindowStyle() & wxCB_READONLY + ? combo->GetHWND() + : combo->GetEditHWND(); + if ( hwndComboEdit ) { - wxLogSysError(_("Failed to create the tooltip '%s'"), - m_text.c_str()); + Add(hwndComboEdit); } } +#endif // !defined(__WXUNIVERSAL__) } void wxToolTip::SetTip(const wxString& tip) @@ -271,8 +395,8 @@ void wxToolTip::SetTip(const wxString& tip) if ( m_window ) { - // update it immediately - wxToolInfo ti(m_window); + // update the tip text shown by the control + wxToolInfo ti(GetHwndOf(m_window)); ti.lpszText = (wxChar *)m_text.c_str(); (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, 0, &ti);