void NotificationWnd::UpdateWindowPosition(const WCHAR *message, bool init)
{
// compute the length of the message
RECT rc = ClientRect(self).ToRECT();
HDC hdc = GetDC(self);
HFONT oldfnt = SelectFont(hdc, font);
DrawText(hdc, message, -1, &rc, DT_CALCRECT | DT_SINGLELINE | DT_NOPREFIX);
SelectFont(hdc, oldfnt);
ReleaseDC(self, hdc);
RectI rectMsg = RectI::FromRECT(rc);
if (hasCancel) {
rectMsg.dy = std::max(rectMsg.dy, 16);
rectMsg.dx += 20;
}
rectMsg.Inflate(PADDING, PADDING);
if (shrinkLimit < 1.0f) {
ClientRect rcOrig(self);
if (rectMsg.dx < rcOrig.dx && rectMsg.dx > rcOrig.dx * shrinkLimit)
rectMsg.dx = rcOrig.dx;
}
// adjust the window to fit the message (only shrink the window when there's no progress bar)
if (!hasProgress) {
SetWindowPos(self, nullptr, 0, 0, rectMsg.dx, rectMsg.dy, SWP_NOMOVE | SWP_NOZORDER);
} else if (init) {
RectI rect = WindowRect(self);
rect.dx = std::max(progressWidth + 2 * PADDING, rectMsg.dx);
rect.dy = rectMsg.dy + PROGRESS_HEIGHT + PADDING / 2;
SetWindowPos(self, nullptr, 0, 0, rect.dx, rect.dy, SWP_NOMOVE | SWP_NOZORDER);
} else if (rectMsg.dx > progressWidth + 2 * PADDING) {
SetWindowPos(self, nullptr, 0, 0, rectMsg.dx, WindowRect(self).dy, SWP_NOMOVE | SWP_NOZORDER);
}
// move the window to the right for a right-to-left layout
if (IsUIRightToLeft()) {
HWND parent = GetParent(self);
RectI rect = MapRectToWindow(WindowRect(self), HWND_DESKTOP, parent);
rect.x = WindowRect(parent).dx - rect.dx - TL_MARGIN - GetSystemMetrics(SM_CXVSCROLL);
SetWindowPos(self, nullptr, rect.x, rect.y, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
}
}
void Update()
{
// maintain top/left pos
CRect rcwnd;
GetWindowRect(rcwnd);
// Clear text
m_wndRTF.SetWindowText(NULL);
// Stream in new text...
CComVariant bstr;
std::string text;
if(m_vertex)
m_vertex->GetProperty(PROP_TOOLTIP, bstr);
if(m_edge)
m_edge->GetProperty(PROP_TOOLTIP, bstr);
if (bstr.vt == VT_BSTR)
text = CW2A(bstr.bstrVal);
LPCSTR pstrText=text.c_str();
RtfStream st = { pstrText, 0 };
EDITSTREAM es = { 0 };
es.dwCookie = (DWORD) &st;
es.dwError = 0;
es.pfnCallback = _StreamReadCallback;
UINT uFormat = pstrText[0]=='{' ? SF_RTF : SF_TEXT;
m_wndRTF.StreamIn(uFormat, es);
// Request new layout
int cx = DEFAULT_WIDTH;
CRect rc( 0, 0, cx, DEFAULT_HEIGHT);
m_wndRTF.ResizeClient(cx, DEFAULT_HEIGHT, FALSE);
m_wndRTF.SetRect(&rc);
m_wndRTF.RequestResize();
CRect rcRTF(m_rcRTF);
CRect rcOrig(m_rcRTF);
// Resize RTF control until the height changes. This will indicate
// the minimum/optimal width of the text.
int iStep = 30;
while( true )
{
ATLASSERT(cx>0);
CRect rc( 0, 0, cx - iStep, DEFAULT_HEIGHT);
m_wndRTF.ResizeClient(cx - iStep, DEFAULT_HEIGHT, FALSE);
m_wndRTF.SetRect(&rc);
m_wndRTF.RequestResize();
if(rcRTF.Height() != m_rcRTF.Height())
{
if( iStep <= 1 ) break;
iStep /= 2;
}
else
{
cx -= iStep;
if( cx <= 0 )
{
rcRTF = rcOrig;
break;
}
rcRTF = m_rcRTF; // Apply better width
}
}
bool notnormal=IsIconic() || IsZoomed();
m_wndRTF.SetWindowPos(0, &rcRTF, (notnormal?0:SWP_SHOWWINDOW) | SWP_NOACTIVATE | SWP_NOZORDER);
if(!notnormal)
{
DWORD exstyle=GetWndExStyle(0);
rcwnd.right=rcwnd.left+rcRTF.Width();
rcwnd.bottom=rcwnd.top+rcRTF.Height();
::AdjustWindowRectEx(&rcwnd, GetWndStyle(0), FALSE, exstyle);
// finally, keep it inside screen bounds
CRect rcScreen;
::SystemParametersInfo(SPI_GETWORKAREA, 0, &rcScreen, 0);
if(rcwnd.right > rcScreen.right)
rcwnd.OffsetRect(-(rcwnd.right-rcScreen.right), 0);
if(rcwnd.top < rcScreen.top)
rcwnd.OffsetRect(0, rcScreen.top-rcwnd.top);
SetWindowPos(0, rcwnd, SWP_NOZORDER);
}
}
