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// ResizableGrip.cpp: implementation of the CResizableGrip class.
//
/////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2000-2001 by Paolo Messina
// (http://www.geocities.com/ppescher - ppescher@yahoo.com)
//
// The contents of this file are subject to the Artistic License (the "License").
// You may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
// http://www.opensource.org/licenses/artistic-license.html
//
// If you find this code useful, credits would be nice!
//
/////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "ResizableGrip.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CResizableGrip::CResizableGrip()
{
m_sizeGrip.cx = GetSystemMetrics(SM_CXVSCROLL);
m_sizeGrip.cy = GetSystemMetrics(SM_CYHSCROLL);
}
CResizableGrip::~CResizableGrip()
{
}
void CResizableGrip::UpdateGripPos()
{
// size-grip goes bottom right in the client area
// (any right-to-left adjustment should go here)
RECT rect;
GetResizableWnd()->GetClientRect(&rect);
rect.left = rect.right - m_sizeGrip.cx;
rect.top = rect.bottom - m_sizeGrip.cy;
// must stay below other children
m_wndGrip.SetWindowPos(&CWnd::wndBottom, rect.left, rect.top, 0, 0,
SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOREPOSITION);
// maximized windows cannot be resized
if (GetResizableWnd()->IsZoomed())
m_wndGrip.EnableWindow(FALSE);
else
m_wndGrip.EnableWindow(TRUE);
}
void CResizableGrip::ShowSizeGrip(BOOL bShow)
{
m_wndGrip.ShowWindow(bShow ? SW_SHOW : SW_HIDE);
}
#define RSZ_GRIP_OBJ _T("ResizableGrip")
BOOL CResizableGrip::InitGrip()
{
CRect rect(0 , 0, m_sizeGrip.cx, m_sizeGrip.cy);
BOOL bRet = m_wndGrip.Create(WS_CHILD | WS_CLIPSIBLINGS | SBS_SIZEGRIP,
rect, GetResizableWnd(), 0);
if (bRet)
{
// set a triangular window region
CRgn rgnGrip, rgn;
rgn.CreateRectRgn(0,0,1,1);
rgnGrip.CreateRectRgnIndirect(&rect);
for (int y=0; y<m_sizeGrip.cy; y++)
{
rgn.SetRectRgn(0, y, m_sizeGrip.cx-y, y+1);
rgnGrip.CombineRgn(&rgnGrip, &rgn, RGN_DIFF);
}
m_wndGrip.SetWindowRgn((HRGN)rgnGrip.Detach(), FALSE);
// subclass control
::SetProp(m_wndGrip, RSZ_GRIP_OBJ,
(HANDLE)::GetWindowLong(m_wndGrip, GWL_WNDPROC));
::SetWindowLong(m_wndGrip, GWL_WNDPROC, (LONG)GripWindowProc);
// update pos
UpdateGripPos();
ShowSizeGrip();
}
return bRet;
}
LRESULT CResizableGrip::GripWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
WNDPROC oldWndProc = (WNDPROC)::GetProp(hwnd, RSZ_GRIP_OBJ);
switch (msg)
{
case WM_NCHITTEST:
// choose proper cursor shape
if (IsRTL(hwnd))
return HTBOTTOMLEFT;
else
return HTBOTTOMRIGHT;
case WM_DESTROY:
// unsubclass
::RemoveProp(hwnd, RSZ_GRIP_OBJ);
::SetWindowLong(hwnd, GWL_WNDPROC, (LONG)oldWndProc);
break;
}
return ::CallWindowProc(oldWndProc, hwnd, msg, wParam, lParam);
}
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Paolo began programming at the age of 9 with a glorious Olivetti M24 (i8086) and GW-BASIC, then he played a bit with Turbo C, Turbo Pascal and Assembly (using the MS-DOS Debug). Quick BASIC and Visual Basic shortly followed, until he learned C++ in College. He tought himself MFC and Windows programming, along with some DHTML and Javascript.
Always attracted by low-level programming and Assembly, he started to appreciate the joys of templates and STL while working for his Master Thesis. For seven months he was playing with airplanes and automatic control at the Unversity of Illinois at Urbana-Champaign, where he first met QNX and embedded systems.
In his job experience he learned Java to develop user interfaces and graphical editors, and re-discovered the Eclipse IDE that he had used in its early versions with the QNX SDK. He also deepened his knowledge of Linux and embedded systems, microcontrollers firmware and embedded voice recognition, while also practicing electronics design.
He graduated in Computer Engineering (Ingegneria informatica) at the University of Pisa, Italy, in December 2003. Currently working for an electronics and robotics company (
www.robotechsrl.com).
He lives in Pisa and in Follonica (GR), Italy.