void CSimpleDlgCtrlResizer::Resize(CRect rect)
{
if (dialog_ == 0)
return;
size_t count= controls_.size();
int resize_count= 0;
{
// calc wnd to resize
for (size_t i= 0; i < count; ++i)
if (controls_[i].resize_flags != 0 || controls_[i].half_flags != 0)
++resize_count;
}
CSize delta_size= rect.Size() - dlg_rect_.Size();
HDWP wnd_pos_info= ::BeginDeferWindowPos(resize_count);
for (size_t i= 0; i < count; ++i)
{
if ((controls_[i].resize_flags == 0 && controls_[i].half_flags == 0) || controls_[i].wnd == 0)
continue;
CRect rect= controls_[i].rect;
UINT flags= SWP_NOZORDER | SWP_NOACTIVATE;
CSize move_size= delta_size;
CSize resize_size= delta_size;
if (UINT half_flags= controls_[i].half_flags)
{
if (half_flags & HALF_MOVE_H)
move_size.cx /= 2;
if (half_flags & HALF_MOVE_V)
move_size.cy /= 2;
if (half_flags & HALF_RESIZE_H)
resize_size.cx /= 2;
if (half_flags & HALF_RESIZE_V)
resize_size.cy /= 2;
}
WINDOWPLACEMENT wp;
memset(&wp, 0, sizeof wp);
wp.length = sizeof wp;
if (::GetWindowPlacement(controls_[i].wnd, &wp) == 0)
{
// DWORD d= ::GetLastError();
ASSERT(false);
continue;
}
CSize shift(0, 0);
if (controls_[i].half_flags & (SHIFT | SHIFT_RESIZES))
shift = shift_;
switch (controls_[i].resize_flags)
{
case MOVE_H:
rect.OffsetRect(shift.cx + move_size.cx, shift.cy);
flags |= SWP_NOSIZE;
break;
case MOVE_V:
rect.OffsetRect(shift.cx, shift.cy + move_size.cy);
flags |= SWP_NOSIZE;
break;
case MOVE:
rect.OffsetRect(move_size + shift);
flags |= SWP_NOSIZE;
break;
case MOVE_H_RESIZE_V:
rect.OffsetRect(move_size.cx, 0);
rect.bottom += resize_size.cy;
if (controls_[i].half_flags & SHIFT_LEFT)
rect.left += shift.cx;
if (controls_[i].half_flags & SHIFT_RIGHT)
rect.right += shift.cx;
break;
case MOVE_V_RESIZE_H:
rect.OffsetRect(0, move_size.cy);
rect.right += resize_size.cx;
break;
case MOVE_H_RESIZE_H:
rect.OffsetRect(move_size.cx, 0);
rect.right += resize_size.cx;
break;
case MOVE_H_RESIZE:
rect.OffsetRect(move_size.cx, 0);
rect.right += resize_size.cx;
rect.bottom += resize_size.cy;
break;
case MOVE_V_RESIZE:
rect.OffsetRect(0, move_size.cy);
rect.right += resize_size.cx;
rect.bottom += resize_size.cy;
break;
case RESIZE_H:
rect.right += resize_size.cx;
if (controls_[i].half_flags & SHIFT)
{
rect.left += shift.cx;
rect.top += shift.cy;
rect.bottom += shift.cy;
}
else if (controls_[i].half_flags & SHIFT_RESIZES)
{
rect.bottom += shift.cy;
}
else
{
rect.bottom = wp.rcNormalPosition.bottom;
flags |= SWP_NOMOVE;
}
break;
case RESIZE_V:
rect.bottom += resize_size.cy;
if (controls_[i].half_flags & SHIFT)
{
rect.left += shift.cx;
rect.right += shift.cx;
rect.top += shift.cy;
}
else if (controls_[i].half_flags & SHIFT_RESIZES)
{
rect.right += shift.cx;
}
else
{
rect.right = wp.rcNormalPosition.right;
flags |= SWP_NOMOVE;
}
break;
case RESIZE:
rect.SetBottomRight(rect.GetBottomRight() + resize_size);
if (controls_[i].half_flags & SHIFT_LEFT)
rect.left += shift.cx;
if (controls_[i].half_flags & SHIFT_RIGHT)
rect.right += shift.cx;
// rect.TopLeft() += shift;
rect.top += shift.cy;
if (shift == CSize(0, 0))
flags |= SWP_NOMOVE;
break;
case NONE:
if (shift != CSize(0, 0))
{
rect.OffsetRect(shift);
flags &= ~SWP_NOMOVE;
}
break;
}
if (flags & SWP_NOMOVE)
rect.SetTopLeft(CPoint(wp.rcNormalPosition.left, wp.rcNormalPosition.top));
if (rect != wp.rcNormalPosition) // placement changed?
{
if (wnd_pos_info)
wnd_pos_info = ::DeferWindowPos(wnd_pos_info, controls_[i].wnd, 0, rect.left, rect.top, rect.Width(), rect.Height(), flags);
else
::SetWindowPos(controls_[i].wnd, 0, rect.left, rect.top, rect.Width(), rect.Height(), flags);
::InvalidateRect(controls_[i].wnd, 0, true);
}
}
if (wnd_pos_info)
::EndDeferWindowPos(wnd_pos_info);
}
