///////////////////////////////////////////////////////////////////////////////
-// Name: msw/tooltip.cpp
+// Name: src/msw/tooltip.cpp
// Purpose: wxToolTip class implementation for MSW
// Author: Vadim Zeitlin
// Modified by:
// Created: 31.01.99
// RCS-ID: $Id$
// Copyright: (c) 1999 Vadim Zeitlin
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
#pragma hdrstop
#endif
+#if wxUSE_TOOLTIPS
+
+#include "wx/tooltip.h"
+
#ifndef WX_PRECOMP
- #include "wx/wx.h"
+ #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
+ #include "wx/app.h"
+ #include "wx/control.h"
#endif
-#include "wx/tooltip.h"
+#include "wx/tokenzr.h"
+#include "wx/vector.h"
#include "wx/msw/private.h"
-#include <commctrl.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
+// 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;
+
+// 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
+static WNDPROC gs_wndprocToolTip = (WNDPROC)NULL;
+
+#endif // wxUSE_TTM_WINDOWFROMPOINT
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
-// a simple wrapper around TOOLINFO Win32 structure
+// This is simply a wrapper for vector<HWND> but defined as a class to hide the
+// details from the public header.
+class wxToolTipOtherWindows : public wxVector<WXHWND>
+{
+};
+
+// 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, unsigned int id, const wxRect& rc)
{
// initialize all members
::ZeroMemory(this, sizeof(TOOLINFO));
- cbSize = sizeof(TOOLINFO);
- uFlags = TTF_IDISHWND;
- uId = (UINT)win->GetHWND();
+ // the structure TOOLINFO has been extended with a 4 byte field in
+ // 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;
+
+ 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;
+ }
}
};
+#ifdef __VISUALC__
+ #pragma warning( default : 4097 )
+#endif
+
// ----------------------------------------------------------------------------
// 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, 0, (LPARAM)lParam) : 0;
+}
+
+// send a message to all existing tooltip controls
+static inline void
+SendTooltipMessageToAll(WXHWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
- return hwnd ? ::SendMessage((HWND)hwnd, msg, wParam, (LPARAM)lParam)
- : 0;
+ if ( hwnd )
+ ::SendMessage((HWND)hwnd, msg, wParam, lParam);
}
// ============================================================================
// implementation
// ============================================================================
+#if wxUSE_TTM_WINDOWFROMPOINT
+
// ----------------------------------------------------------------------------
-// "semiglobal" functions - these methods work with the tooltip control which
-// is shared among all the wxToolTips of the same frame
+// window proc for our tooltip control
// ----------------------------------------------------------------------------
-// create the tooltip ctrl for our parent frame if it doesn't exist yet
-WXHWND wxToolTip::GetToolTipCtrl()
+LRESULT APIENTRY wxToolTipWndProc(HWND hwndTT,
+ UINT msg,
+ WPARAM wParam,
+ LPARAM lParam)
{
- wxWindow *parent = m_window;
- while ( parent && !parent->IsKindOf(CLASSINFO(wxFrame)) )
+ if ( msg == TTM_WINDOWFROMPOINT )
{
- parent = parent->GetParent();
- }
+ LPPOINT ppt = (LPPOINT)lParam;
- wxCHECK_MSG( parent, 0, "can't create tooltip control outside a frame" );
+ // the window on which event occurred
+ HWND hwnd = ::WindowFromPoint(*ppt);
- wxFrame *frame = (wxFrame *)parent;
- HWND hwndTT = (HWND)frame->GetToolTipCtrl();
- if ( !hwndTT )
- {
- hwndTT = ::CreateWindow(TOOLTIPS_CLASS,
- (LPSTR)NULL,
- TTS_ALWAYSTIP,
- CW_USEDEFAULT, CW_USEDEFAULT,
- CW_USEDEFAULT, CW_USEDEFAULT,
- (HWND)frame->GetHWND(), (HMENU)NULL,
- wxGetInstance(), NULL);
-
- if ( hwndTT )
+ OutputDebugString("TTM_WINDOWFROMPOINT: ");
+ OutputDebugString(wxString::Format("0x%08x => ", hwnd));
+
+ // return a HWND corresponding to a wxWindow because only wxWidgets are
+ // associated with tooltips using TTM_ADDTOOL
+ wxWindow *win = wxGetWindowFromHWND((WXHWND)hwnd);
+
+ if ( win )
{
- frame->SetToolTipCtrl((WXHWND)hwndTT);
+ 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
{
- wxLogSysError(_("Can not create tooltip control"));
+ OutputDebugString("no window\r\n");
}
}
- return (WXHWND)hwndTT;
+ return ::CallWindowProc(CASTWNDPROC gs_wndprocToolTip, hwndTT, msg, wParam, lParam);
}
+#endif // wxUSE_TTM_WINDOWFROMPOINT
+
+// ----------------------------------------------------------------------------
+// static functions
+// ----------------------------------------------------------------------------
+
void wxToolTip::Enable(bool flag)
{
- (void)SendTooltipMessage(GetToolTipCtrl(), TTM_ACTIVATE, flag, 0);
+ // Make sure the tooltip has been created
+ (void) GetToolTipCtrl();
+
+ SendTooltipMessageToAll(ms_hwndTT, TTM_ACTIVATE, flag, 0);
}
-void wxToolTip::RelayEvent(WXMSG *msg)
+void wxToolTip::SetDelay(long milliseconds)
{
- (void)SendTooltipMessage(GetToolTipCtrl(), TTM_RELAYEVENT, 0, msg);
+ // Make sure the tooltip has been created
+ (void) GetToolTipCtrl();
+
+ SendTooltipMessageToAll(ms_hwndTT, TTM_SETDELAYTIME,
+ TTDT_INITIAL, milliseconds);
}
-void wxToolTip::SetDelay(long 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()
{
- (void)SendTooltipMessage(GetToolTipCtrl(), TTM_SETDELAYTIME,
- TTDT_INITIAL, (void *)milliseconds);
+ if ( !ms_hwndTT )
+ {
+ 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;
+ 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
+ }
+ }
+
+ return ms_hwndTT;
+}
+
+/* static */
+void wxToolTip::RelayEvent(WXMSG *msg)
+{
+ (void)SendTooltipMessage(GetToolTipCtrl(), TTM_RELAYEVENT, msg);
}
// ----------------------------------------------------------------------------
// ctor & dtor
// ----------------------------------------------------------------------------
+IMPLEMENT_ABSTRACT_CLASS(wxToolTip, wxObject)
+
wxToolTip::wxToolTip(const wxString &tip)
: m_text(tip)
{
m_window = NULL;
+ m_others = 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;
+ m_others = 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();
+
+ delete m_others;
}
// ----------------------------------------------------------------------------
// 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::DoRemove(WXHWND hWnd)
+{
+ if ( m_window && hWnd == m_window->GetHWND() )
+ {
+ // Remove the tooltip from the main window.
+ Remove(hWnd, m_id, m_rect);
+ }
+ else
+ {
+ // Not really sure what to pass to remove in this case...
+ Remove(hWnd, 0, wxRect());
+ }
+}
+
void wxToolTip::Remove()
{
- // remove this tool from the tooltip control
- if ( m_window )
+ DoForAllWindows(&wxToolTip::DoRemove);
+}
+
+void wxToolTip::AddOtherWindow(WXHWND hWnd)
+{
+ if ( !m_others )
+ m_others = new wxToolTipOtherWindows;
+
+ m_others->push_back(hWnd);
+
+ DoAddHWND(hWnd);
+}
+
+void wxToolTip::DoAddHWND(WXHWND hWnd)
+{
+ HWND hwnd = (HWND)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
+ // 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 = const_cast<wxChar *>(m_text.wx_str());
+
+ if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )
+ {
+ wxLogDebug(wxT("Failed to create the tooltip '%s'"), m_text.c_str());
+
+ return;
+ }
+
+#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 ( !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 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) )
+ {
+ 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
{
- wxToolInfo ti(m_window);
- (void)SendTooltipMessage(GetToolTipCtrl(), TTM_DELTOOL, 0, &ti);
+ // 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<wxChar *>(m_text.wx_str());
+
+ if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, &ti) )
+ {
+ wxLogDebug(wxT("Failed to create the tooltip '%s'"), m_text.c_str());
+ }
}
}
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();
-
- if ( !SendTooltipMessage(GetToolTipCtrl(), TTM_ADDTOOL, 0, &ti) )
+ DoAddHWND(m_window->GetHWND());
+ }
+#if !defined(__WXUNIVERSAL__)
+ // and all of its subcontrols (e.g. radio buttons 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++ )
{
- wxLogSysError(_("Failed to create the tooltip '%s'"),
- m_text.c_str());
+ int id = subcontrols[n];
+ HWND hwnd = GetDlgItem(GetHwndOf(m_window), id);
+ if ( !hwnd )
+ {
+ // maybe it's a child of parent of the control, in fact?
+ // (radiobuttons are subcontrols, i.e. children of the radiobox
+ // for wxWidgets but are its siblings at Windows level)
+ hwnd = GetDlgItem(GetHwndOf(m_window->GetParent()), id);
+ }
+
+ // must have it by now!
+ wxASSERT_MSG( hwnd, wxT("no hwnd for subcontrol?") );
+
+ AddOtherWindow((WXHWND)hwnd);
}
}
+#endif // !defined(__WXUNIVERSAL__)
+}
+
+void wxToolTip::SetRect(const wxRect& rc)
+{
+ m_rect = rc;
+
+ if ( m_window )
+ {
+ wxToolInfo ti(GetHwndOf(m_window), m_id, m_rect);
+ (void)SendTooltipMessage(GetToolTipCtrl(), TTM_NEWTOOLRECT, &ti);
+ }
}
void wxToolTip::SetTip(const wxString& tip)
{
m_text = tip;
+ DoForAllWindows(&wxToolTip::DoSetTip);
+}
+
+void wxToolTip::DoSetTip(WXHWND hWnd)
+{
+ // update the tip text shown by the control
+ wxToolInfo ti((HWND)hWnd, 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<wxChar *>(wxT(""));
+ (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, &ti);
+
+ ti.lpszText = const_cast<wxChar *>(m_text.wx_str());
+ (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, &ti);
+}
+
+void wxToolTip::DoForAllWindows(void (wxToolTip::*func)(WXHWND))
+{
if ( m_window )
{
- // update it immediately
- wxToolInfo ti(m_window);
- ti.lpszText = (char *)m_text.c_str();
+ (this->*func)(m_window->GetHWND());
+ }
- (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, 0, &ti);
+ if ( m_others )
+ {
+ for ( wxToolTipOtherWindows::const_iterator it = m_others->begin();
+ it != m_others->end();
+ ++it )
+ {
+ (this->*func)(*it);
+ }
}
}
+
+#endif // wxUSE_TOOLTIPS
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