X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/95130bea15eb7139702c76ff49edc33d4b3b492e..0a9c5e3564ed35162bb8cab5af62a98405364fb8:/src/msw/tooltip.cpp diff --git a/src/msw/tooltip.cpp b/src/msw/tooltip.cpp index 052fbca0b9..f43fed3843 100644 --- a/src/msw/tooltip.cpp +++ b/src/msw/tooltip.cpp @@ -1,5 +1,5 @@ /////////////////////////////////////////////////////////////////////////////// -// Name: msw/tooltip.cpp +// Name: src/msw/tooltip.cpp // Purpose: wxToolTip class implementation for MSW // Author: Vadim Zeitlin // Modified by: @@ -23,17 +23,26 @@ #pragma hdrstop #endif -#ifndef WX_PRECOMP - #include "wx/wx.h" -#endif - #if wxUSE_TOOLTIPS #include "wx/tooltip.h" + +#ifndef WX_PRECOMP + #include "wx/msw/wrapcctl.h" // include "properly" + #include "wx/app.h" + #include "wx/control.h" +#endif + +#include "wx/tokenzr.h" #include "wx/msw/private.h" -// include "properly" -#include "wx/msw/wrapcctl.h" +#ifndef TTTOOLINFO_V1_SIZE + #define TTTOOLINFO_V1_SIZE 0x28 +#endif + +#ifndef TTF_TRANSPARENT + #define TTF_TRANSPARENT 0x0100 +#endif // VZ: normally, the trick with subclassing the tooltip control and processing // TTM_WINDOWFROMPOINT should work but, somehow, it doesn't. I leave the @@ -52,6 +61,9 @@ // the tooltip parent window WXHWND wxToolTip::ms_hwndTT = (WXHWND)NULL; +// new tooltip maximum width, default value is set on first call to wxToolTip::Add() +int wxToolTip::ms_maxWidth = 0; + #if wxUSE_TTM_WINDOWFROMPOINT // the tooltip window proc @@ -71,27 +83,50 @@ static WNDPROC gs_wndprocToolTip = (WNDPROC)NULL; class wxToolInfo : public TOOLINFO { public: - wxToolInfo(HWND hwndOwner) + wxToolInfo(HWND hwndOwner, unsigned int id, const wxRect& rc) { // initialize all members ::ZeroMemory(this, sizeof(TOOLINFO)); // 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 + // version 4.70 of comctl32.dll and another one in 5.01 but we don't + // use these extended fields so use the old struct size to ensure that + // the tooltips work on old (Windows 95) systems too + cbSize = TTTOOLINFO_V1_SIZE; hwnd = hwndOwner; - uFlags = TTF_IDISHWND; - uId = (UINT)hwndOwner; + + if (rc.IsEmpty()) + { + uFlags = TTF_IDISHWND; + uId = (UINT_PTR)hwndOwner; + } + else + { + // this tooltip must be shown only if the mouse hovers a specific rect + // of the hwnd parameter! + rect.left = rc.GetLeft(); + rect.right = rc.GetRight(); + rect.top = rc.GetTop(); + rect.bottom = rc.GetBottom(); + + // note that not setting TTF_IDISHWND from the uFlags member means that the + // ti.uId field should not contain the HWND but rather as MSDN says an + // "Application-defined identifier of the tool"; this is used internally by + // Windows to distinguish the different tooltips attached to the same window + uId = id; + } + + // we use TTF_TRANSPARENT to fix a problem which arises at least with + // the text controls but may presumably happen with other controls + // which display the tooltip at mouse position: it can start flashing + // then as the control gets "focus lost" events and dismisses the + // tooltip which then reappears because mouse remains hovering over the + // control, see SF patch 1821229 + if ( wxApp::GetComCtl32Version() >= 470 ) + { + uFlags |= TTF_TRANSPARENT; + } } }; @@ -103,23 +138,20 @@ public: // private functions // ---------------------------------------------------------------------------- -// send a message to the tooltip control -inline LRESULT SendTooltipMessage(WXHWND hwnd, - UINT msg, - WPARAM wParam, - void *lParam) +// send a message to the tooltip control if it exists +// +// NB: wParam is always 0 for the TTM_XXX messages we use +static inline LRESULT SendTooltipMessage(WXHWND hwnd, UINT msg, void *lParam) { - return hwnd ? ::SendMessage((HWND)hwnd, msg, wParam, (LPARAM)lParam) - : 0; + return hwnd ? ::SendMessage((HWND)hwnd, msg, 0, (LPARAM)lParam) : 0; } // send a message to all existing tooltip controls -static void SendTooltipMessageToAll(WXHWND hwnd, - UINT msg, - WPARAM wParam, - LPARAM lParam) +static inline void +SendTooltipMessageToAll(WXHWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { - (void)SendTooltipMessage((WXHWND)hwnd, msg, wParam, (void *)lParam); + if ( hwnd ) + ::SendMessage((HWND)hwnd, msg, wParam, lParam); } // ============================================================================ @@ -183,32 +215,67 @@ LRESULT APIENTRY wxToolTipWndProc(HWND hwndTT, void wxToolTip::Enable(bool flag) { + // Make sure the tooltip has been created + (void) GetToolTipCtrl(); + SendTooltipMessageToAll(ms_hwndTT, TTM_ACTIVATE, flag, 0); } void wxToolTip::SetDelay(long milliseconds) { + // Make sure the tooltip has been created + (void) GetToolTipCtrl(); + SendTooltipMessageToAll(ms_hwndTT, TTM_SETDELAYTIME, TTDT_INITIAL, milliseconds); } +void wxToolTip::SetAutoPop(long milliseconds) +{ + SendTooltipMessageToAll(ms_hwndTT, TTM_SETDELAYTIME, + TTDT_AUTOPOP, milliseconds); +} + +void wxToolTip::SetReshow(long milliseconds) +{ + SendTooltipMessageToAll(ms_hwndTT, TTM_SETDELAYTIME, + TTDT_RESHOW, milliseconds); +} + +void wxToolTip::SetMaxWidth(int width) +{ + wxASSERT_MSG( width == -1 || width >= 0, wxT("invalid width value") ); + + ms_maxWidth = width; +} + // --------------------------------------------------------------------------- // implementation helpers // --------------------------------------------------------------------------- // create the tooltip ctrl for our parent frame if it doesn't exist yet +/* static */ WXHWND wxToolTip::GetToolTipCtrl() { if ( !ms_hwndTT ) { - ms_hwndTT = (WXHWND)::CreateWindow(TOOLTIPS_CLASS, - (LPCTSTR)NULL, - TTS_ALWAYSTIP, - CW_USEDEFAULT, CW_USEDEFAULT, - CW_USEDEFAULT, CW_USEDEFAULT, - NULL, (HMENU)NULL, - wxGetInstance(), - NULL); + WXDWORD exflags = 0; + if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft ) + { + exflags |= WS_EX_LAYOUTRTL; + } + + // we want to show the tooltips always (even when the window is not + // active) and we don't want to strip "&"s from them + ms_hwndTT = (WXHWND)::CreateWindowEx(exflags, + TOOLTIPS_CLASS, + (LPCTSTR)NULL, + TTS_ALWAYSTIP | TTS_NOPREFIX, + CW_USEDEFAULT, CW_USEDEFAULT, + CW_USEDEFAULT, CW_USEDEFAULT, + NULL, (HMENU)NULL, + wxGetInstance(), + NULL); if ( ms_hwndTT ) { HWND hwnd = (HWND)ms_hwndTT; @@ -225,9 +292,10 @@ WXHWND wxToolTip::GetToolTipCtrl() return ms_hwndTT; } +/* static */ void wxToolTip::RelayEvent(WXMSG *msg) { - (void)SendTooltipMessage(GetToolTipCtrl(), TTM_RELAYEVENT, 0, msg); + (void)SendTooltipMessage(GetToolTipCtrl(), TTM_RELAYEVENT, msg); } // ---------------------------------------------------------------------------- @@ -240,25 +308,48 @@ wxToolTip::wxToolTip(const wxString &tip) : m_text(tip) { m_window = NULL; + + // make sure m_rect.IsEmpty() == true + m_rect.SetWidth(0); + m_rect.SetHeight(0); + + // since m_rect is not valid, m_id is ignored by wxToolInfo ctor... + m_id = 0; +} + +wxToolTip::wxToolTip(wxWindow* win, unsigned int id, const wxString &tip, const wxRect& rc) + : m_text(tip), m_rect(rc), m_id(id) +{ + m_window = NULL; + + SetWindow(win); } wxToolTip::~wxToolTip() { - // there is no need to Remove() this tool - it will be done automatically - // anyhow + // the tooltip has to be removed before deleting. Otherwise, if it is visible + // while being deleted, there will be a delay before it goes away. + Remove(); } // ---------------------------------------------------------------------------- // others // ---------------------------------------------------------------------------- +/* static */ +void wxToolTip::Remove(WXHWND hWnd, unsigned int id, const wxRect& rc) +{ + wxToolInfo ti((HWND)hWnd, id, rc); + + (void)SendTooltipMessage(GetToolTipCtrl(), TTM_DELTOOL, &ti); +} + void wxToolTip::Remove() { // remove this tool from the tooltip control if ( m_window ) { - wxToolInfo ti(GetHwndOf(m_window)); - (void)SendTooltipMessage(GetToolTipCtrl(), TTM_DELTOOL, 0, &ti); + Remove(m_window->GetHWND(), m_id, m_rect); } } @@ -266,7 +357,7 @@ void wxToolTip::Add(WXHWND hWnd) { HWND hwnd = (HWND)hWnd; - wxToolInfo ti(hwnd); + wxToolInfo ti(hwnd, m_id, m_rect); // another possibility would be to specify LPSTR_TEXTCALLBACK here as we // store the tooltip text ourselves anyhow, and provide it in response to @@ -275,69 +366,98 @@ void wxToolTip::Add(WXHWND hWnd) // 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 + ti.lpszText = const_cast(m_text.wx_str()); - if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, 0, &ti) ) + if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) ) { - wxLogDebug(_T("Failed to create the tooltip '%s'"), m_text.c_str()); + wxLogDebug(wxT("Failed to create the tooltip '%s'"), m_text.c_str()); + + return; } - else + +#ifdef TTM_SETMAXTIPWIDTH + if ( wxApp::GetComCtl32Version() >= 470 ) { - // check for multiline toopltip - int index = m_text.Find(_T('\n')); + // 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); - if ( index != wxNOT_FOUND ) + if ( !hfont ) { -#ifdef TTM_SETMAXTIPWIDTH - if ( wxApp::GetComCtl32Version() >= 470 ) + hfont = (HFONT)GetStockObject(DEFAULT_GUI_FONT); + if ( !hfont ) { - // 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 ( !::GetTextExtentPoint32(hdc, m_text, index, &sz) ) - { - wxLogLastError(wxT("GetTextExtentPoint32")); - } - - SendTooltipMessage(GetToolTipCtrl(), TTM_SETMAXTIPWIDTH, - 0, (void *)sz.cx); + wxLogLastError(wxT("GetStockObject(DEFAULT_GUI_FONT)")); } - else -#endif // comctl32.dll >= 4.70 + } + + MemoryHDC hdc; + if ( !hdc ) + { + wxLogLastError(wxT("CreateCompatibleDC(NULL)")); + } + + if ( !SelectObject(hdc, hfont) ) + { + wxLogLastError(wxT("SelectObject(hfont)")); + } + + // find the width of the widest line + int maxWidth = 0; + wxStringTokenizer tokenizer(m_text, wxT("\n")); + while ( tokenizer.HasMoreTokens() ) + { + const wxString token = tokenizer.GetNextToken(); + + SIZE sz; + if ( !::GetTextExtentPoint32(hdc, token.wx_str(), + token.length(), &sz) ) { - // replace the '\n's with spaces because otherwise they appear as - // unprintable characters in the tooltip string - m_text.Replace(_T("\n"), _T(" ")); - 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()); - } + wxLogLastError(wxT("GetTextExtentPoint32")); } + + if ( sz.cx > maxWidth ) + maxWidth = sz.cx; + } + + // limit size to ms_maxWidth, if set + if ( ms_maxWidth == 0 ) + { + // this is more or less arbitrary but seems to work well + static const int DEFAULT_MAX_WIDTH = 400; + + ms_maxWidth = wxGetClientDisplayRect().width / 2; + + if ( ms_maxWidth > DEFAULT_MAX_WIDTH ) + ms_maxWidth = DEFAULT_MAX_WIDTH; + } + + if ( ms_maxWidth != -1 && maxWidth > ms_maxWidth ) + maxWidth = ms_maxWidth; + + // only set a new width if it is bigger than the current setting: + // otherwise adding a tooltip with shorter line(s) than a previous + // one would result in breaking the longer lines unnecessarily as + // all our tooltips share the same maximal width + if ( maxWidth > SendTooltipMessage(GetToolTipCtrl(), + TTM_GETMAXTIPWIDTH, 0) ) + { + SendTooltipMessage(GetToolTipCtrl(), TTM_SETMAXTIPWIDTH, + wxUIntToPtr(maxWidth)); + } + } + else +#endif // TTM_SETMAXTIPWIDTH + { + // replace the '\n's with spaces because otherwise they appear as + // unprintable characters in the tooltip string + m_text.Replace(wxT("\n"), wxT(" ")); + ti.lpszText = const_cast(m_text.wx_str()); + + if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) ) + { + wxLogDebug(wxT("Failed to create the tooltip '%s'"), m_text.c_str()); } } } @@ -354,7 +474,7 @@ void wxToolTip::SetWindow(wxWindow *win) Add(m_window->GetHWND()); } #if !defined(__WXUNIVERSAL__) - // and all of its subcontrols (e.g. radiobuttons in a radiobox) as well + // and all of its subcontrols (e.g. radio buttons in a radiobox) as well wxControl *control = wxDynamicCast(m_window, wxControl); if ( control ) { @@ -373,28 +493,23 @@ void wxToolTip::SetWindow(wxWindow *win) } // must have it by now! - wxASSERT_MSG( hwnd, _T("no hwnd for subcontrol?") ); + wxASSERT_MSG( hwnd, wxT("no hwnd for subcontrol?") ); Add((WXHWND)hwnd); } } +#endif // !defined(__WXUNIVERSAL__) +} + +void wxToolTip::SetRect(const wxRect& rc) +{ + m_rect = rc; - // 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 ) + if ( m_window ) { - WXHWND hwndComboEdit = combo->GetWindowStyle() & wxCB_READONLY - ? combo->GetHWND() - : combo->GetEditHWND(); - if ( hwndComboEdit ) - { - Add(hwndComboEdit); - } + wxToolInfo ti(GetHwndOf(m_window), m_id, m_rect); + (void)SendTooltipMessage(GetToolTipCtrl(), TTM_NEWTOOLRECT, &ti); } -#endif // !defined(__WXUNIVERSAL__) } void wxToolTip::SetTip(const wxString& tip) @@ -404,10 +519,16 @@ void wxToolTip::SetTip(const wxString& tip) if ( m_window ) { // update the tip text shown by the control - wxToolInfo ti(GetHwndOf(m_window)); - ti.lpszText = (wxChar *)m_text.c_str(); + wxToolInfo ti(GetHwndOf(m_window), m_id, m_rect); + + // for some reason, changing the tooltip text directly results in + // repaint of the controls under it, see #10520 -- but this doesn't + // happen if we reset it first + ti.lpszText = const_cast(wxT("")); + (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, &ti); - (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, 0, &ti); + ti.lpszText = const_cast(m_text.wx_str()); + (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, &ti); } }