// 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
uFlags |= TTF_TRANSPARENT;
}
- uId = (UINT)hwndOwner;
+ uId = (UINT_PTR)hwndOwner;
}
};
TTDT_RESHOW, milliseconds);
}
+void wxToolTip::SetMaxWidth(int width)
+{
+ wxASSERT_MSG( width == -1 || width >= 0, _T("invalid width value") );
+
+ ms_maxWidth = width;
+}
+
// ---------------------------------------------------------------------------
// implementation helpers
// ---------------------------------------------------------------------------
// NMTTDISPINFO struct -- and setting the tooltip here we can have tooltips
// of any length
ti.hwnd = hwnd;
- ti.lpszText = (wxChar *)m_text.wx_str(); // const_cast
+ ti.lpszText = const_cast<wxChar *>(m_text.wx_str());
if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )
{
wxLogDebug(_T("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);
-
- 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)"));
- }
-
- // find the width of the widest line
- int max = 0;
- wxStringTokenizer tokenizer(m_text, _T("\n"));
- wxString token = tokenizer.GetNextToken();
- while (token.length())
- {
- SIZE sz;
- if ( !::GetTextExtentPoint32(hdc, token.wx_str(), token.length(), &sz) )
- {
- wxLogLastError(wxT("GetTextExtentPoint32"));
- }
- if ( sz.cx > max )
- max = sz.cx;
-
- token = tokenizer.GetNextToken();
- }
-
- // only set a new width if it is bigger than the current setting
- if (max > SendTooltipMessage(GetToolTipCtrl(), TTM_GETMAXTIPWIDTH, 0))
- SendTooltipMessage(GetToolTipCtrl(), TTM_SETMAXTIPWIDTH,
- (void *)max);
+ 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, _T("\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.wx_str(); // const_cast
-
- if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &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(_T("\n"), _T(" "));
+ ti.lpszText = const_cast<wxChar *>(m_text.wx_str());
+
+ if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )
+ {
+ wxLogDebug(_T("Failed to create the tooltip '%s'"), m_text.c_str());
}
}
}
{
// update the tip text shown by the control
wxToolInfo ti(GetHwndOf(m_window));
- ti.lpszText = (wxChar *)m_text.wx_str();
+ // 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<wxChar *>(_T(""));
+ (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, &ti);
+
+ ti.lpszText = const_cast<wxChar *>(m_text.wx_str());
(void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, &ti);
}
}
projects / wxWidgets.git / blobdiff