Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

added (wxMSW-only) wxToolTip::SetMaxWidth() and improve its default behaviour (#2817)

Browse Source 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58329 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2009-01-23 13:26:20 +00:00
parent 6063039441
commit be8b43858c
4 changed files with 198 additions and 97 deletions
Download Patch File Download Diff File Expand all files Collapse all files

138
src/msw/tooltip.cpp
View File

@@ -61,6 +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
@@ -215,6 +218,13 @@ void wxToolTip::SetReshow(long milliseconds)
TTDT_RESHOW, milliseconds);
}
void wxToolTip::SetMaxWidth(int width)
{
wxASSERT_MSG( width == -1 || width >= 0, _T("invalid width value") );
ms_maxWidth = width;
}
// ---------------------------------------------------------------------------
// implementation helpers
// ---------------------------------------------------------------------------
@@ -323,76 +333,82 @@ void wxToolTip::Add(WXHWND hWnd)
}
else
{
// check for multiline toopltip
int index = m_text.Find(_T('\n'));
if ( index != wxNOT_FOUND )
{
#ifdef TTM_SETMAXTIPWIDTH
if ( wxApp::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);
if ( wxApp::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);
if ( !hfont )
{
hfont = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
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,
wxUIntToPtr(max));
wxLogLastError(wxT("GetStockObject(DEFAULT_GUI_FONT)"));
}
}
else
#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(" "));
ti.lpszText = (wxChar *)m_text.wx_str(); // const_cast
if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )
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) )
{
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
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 = (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());
}
}
}