NcHitTest HandleNcHitTest(Point screenPoint)
{
var windowPoint = this.PointFromScreen(screenPoint);
NcHitTest hit = NcHitTest.HTCLIENT;
if (_contentWindow != null &&
(_contentWindow.ResizeMode == System.Windows.ResizeMode.CanResize ||
_contentWindow.ResizeMode == System.Windows.ResizeMode.CanResizeWithGrip))
{
var chrome = _contentWindow.GetValue(Chrome.ChromeProperty) as Chrome;
hit = NcBorderHitTest(chrome.ResizeBorderThickness, windowPoint);
}
//Debug.WriteLine(hit);
return(hit);
}
private NcHitTest HandleNcHitTest(IntPtr hWnd, IntPtr lParam)
{
Point screenPoint = lParam.ToPoint();
Point windowPoint = ContentWindow.PointFromScreen(screenPoint);
var capH = (double)WindowCaptionHeightConverter.Instance.Convert(Chrome.GetCaptionHeight(ContentWindow), typeof(Double), null, CultureInfo.CurrentCulture);
//double capH = (windowCapH > -1 ? windowCapH : ContentWindow.ActualHeight);
NcHitTest location = NcHitTest.HTCLIENT;
var hitTest = ContentWindow.InputHitTest(windowPoint);
if (hitTest != null && (windowPoint.Y <= capH || Chrome.GetIsCaption(hitTest)) &&
!Chrome.GetIsHitTestVisible(hitTest))
{
location = NcHitTest.HTCAPTION;
if (windowPoint.Y <= 40)
{
// check for sysmenu style
if (((WindowStyles)User32.GetWindowLong(hWndContent, CommonWin32.WindowClasses.WindowLong.GWL_STYLE)).HasFlag(WindowStyles.WS_SYSMENU))
{
if (ContentWindow.FlowDirection == System.Windows.FlowDirection.LeftToRight)
{
if (windowPoint.X <= 40)
{
location = NcHitTest.HTSYSMENU;
}
}
else if (windowPoint.X >= (ContentWindow.ActualWidth - 40))
{
location = NcHitTest.HTSYSMENU;
}
}
}
}
if (_resizeGrip != null && _resizeGrip.Visibility == System.Windows.Visibility.Visible &&
VisualTreeHelper.HitTest(_resizeGrip, _resizeGrip.PointFromScreen(screenPoint)) != null)
{
location = _resizeGrip.FlowDirection == System.Windows.FlowDirection.LeftToRight ?
NcHitTest.HTBOTTOMRIGHT : NcHitTest.HTBOTTOMLEFT;
}
//Debug.WriteLine(location);
return(location);
}
NcHitTest HandleNcHitTest(Point screenPoint)
{
var windowPoint = _contentWindow.PointFromScreen(screenPoint);
var capH = (double)WindowCaptionHeightConverter.Instance.Convert(Chrome.GetCaptionHeight(_contentWindow), typeof(Double), null, CultureInfo.CurrentCulture);
//double capH = (windowCapH > -1 ? windowCapH : _contentWindow.ActualHeight);
NcHitTest location = NcHitTest.HTCLIENT;
var hitTest = _contentWindow.InputHitTest(windowPoint);
if (hitTest != null && (windowPoint.Y <= capH || Chrome.GetIsCaption(hitTest)) &&
!Chrome.GetIsHitTestVisible(hitTest))
{
location = NcHitTest.HTCAPTION;
if (windowPoint.Y <= 40)
{
// TODO: check for sysmenu style
if (_contentWindow.FlowDirection == System.Windows.FlowDirection.LeftToRight)
{
if (windowPoint.X <= 40)
{
location = NcHitTest.HTSYSMENU;
}
}
else if (windowPoint.X >= (_contentWindow.ActualWidth - 40))
{
location = NcHitTest.HTSYSMENU;
}
}
}
if (_resizeGrip != null && _resizeGrip.Visibility == System.Windows.Visibility.Visible &&
VisualTreeHelper.HitTest(_resizeGrip, _resizeGrip.PointFromScreen(screenPoint)) != null)
{
location = _resizeGrip.FlowDirection == System.Windows.FlowDirection.LeftToRight ?
NcHitTest.HTBOTTOMRIGHT : NcHitTest.HTBOTTOMLEFT;
}
//Debug.WriteLine(location);
return(location);
}
IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
IntPtr retVal = IntPtr.Zero;
if (!handled)
{
var wmsg = (WindowMessage)msg;
//Debug.WriteLine(wmsg);
switch (wmsg)
{
case WindowMessage.WM_NCCALCSIZE:
handled = true;
break;
case WindowMessage.WM_NCHITTEST:
NcHitTest res = NcHitTest.HTBORDER;
if (_manager.ContentWindow.ResizeMode == ResizeMode.CanResizeWithGrip ||
_manager.ContentWindow.ResizeMode == ResizeMode.CanResize)
{
var pt = PointFromScreen(lParam.ToPoint());
int diagSize = (int)(2 * PadSize);
switch (Side)
{
case BorderSide.Left:
if (pt.Y <= diagSize)
{
res = NcHitTest.HTTOPLEFT;
}
else if (pt.Y >= Height - diagSize)
{
res = NcHitTest.HTBOTTOMLEFT;
}
else
{
res = NcHitTest.HTLEFT;
}
break;
case BorderSide.Top:
if (pt.X <= diagSize)
{
res = NcHitTest.HTTOPLEFT;
}
else if (pt.X >= Width - diagSize)
{
res = NcHitTest.HTTOPRIGHT;
}
else
{
res = NcHitTest.HTTOP;
}
break;
case BorderSide.Right:
if (pt.Y <= diagSize)
{
res = NcHitTest.HTTOPRIGHT;
}
else if (pt.Y >= Height - diagSize)
{
res = NcHitTest.HTBOTTOMRIGHT;
}
else
{
res = NcHitTest.HTRIGHT;
}
break;
case BorderSide.Bottom:
if (pt.X <= diagSize)
{
res = NcHitTest.HTBOTTOMLEFT;
}
else if (pt.X >= Width - diagSize)
{
res = NcHitTest.HTBOTTOMRIGHT;
}
else
{
res = NcHitTest.HTBOTTOM;
}
break;
}
}
retVal = new IntPtr((int)res);
handled = true;
break;
case WindowMessage.WM_NCRBUTTONDOWN:
case WindowMessage.WM_NCMBUTTONDOWN:
case WindowMessage.WM_NCRBUTTONDBLCLK:
case WindowMessage.WM_NCMBUTTONDBLCLK:
case WindowMessage.WM_RBUTTONDBLCLK:
case WindowMessage.WM_MBUTTONDBLCLK:
case WindowMessage.WM_LBUTTONDBLCLK:
handled = true;
User32.SetForegroundWindow(_manager.hWndContent);
break;
case WindowMessage.WM_NCLBUTTONDOWN:
case WindowMessage.WM_NCLBUTTONDBLCLK:
handled = true;
// pass resizer msg to the content window instead
User32.SetForegroundWindow(_manager.hWndContent);
User32.SendMessage(_manager.hWndContent, (uint)msg, wParam, lParam);
break;
case WindowMessage.WM_MOUSEACTIVATE:
var lowword = 0xffff & lParam.ToInt32();
var hchit = (NcHitTest)lowword;
// in case of non-resizable window eat this msg
if (hchit == NcHitTest.HTCLIENT)
{
retVal = new IntPtr((int)MouseActivate.MA_NOACTIVATEANDEAT);
}
else
{
retVal = new IntPtr((int)MouseActivate.MA_NOACTIVATE);
}
handled = true;
break;
case WindowMessage.WM_GETMINMAXINFO:
// overridden so max size = normal max + resize border (for when content window is max size without maximizing)
var thick = 2 * (int)PadSize;
MINMAXINFO para = (MINMAXINFO)Marshal.PtrToStructure(lParam, typeof(MINMAXINFO));
var orig = para.ptMaxTrackSize;
orig.x += thick;
orig.y += thick;
para.ptMaxTrackSize = orig;
Marshal.StructureToPtr(para, lParam, true);
break;
}
}
return(retVal);
}
private void OnNcHitTest(IntPtr handledWindow, IntPtr firstParameter, IntPtr secondParameter)
{
NcHitTest?.Invoke(handledWindow, firstParameter, secondParameter);
}
