www.pudn.com > FTPServerSrc.rar > DialogResize.cpp
/****************************************************************/
/* */
/* DialogResize.cpp */
/* */
/* Implementation of the CDialogResize class. */
/* Provides support for resizing dialog controls. */
/* */
/* Based on the WTL class CDialogResize from Microsoft */
/* Modified for use with MFC by Pablo van der Meer */
/* */
/* Copyright Pablo Software Solutions 2002 */
/* http://www.pablovandermeer.nl */
/* */
/* Last updated: 10 july 2002 */
/* */
/****************************************************************/
#include "stdafx.h"
#include "DialogResize.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
CDialogResize::CDialogResize()
{
CommonConstruct();
}
CDialogResize::CDialogResize(UINT uResource, CWnd* pParent)
: CDialog(uResource, pParent)
{
CommonConstruct();
}
CDialogResize::CDialogResize(LPCTSTR pszResource, CWnd* pParent)
: CDialog(pszResource, pParent)
{
CommonConstruct();
}
void CDialogResize::CommonConstruct()
{
//{{AFX_DATA_INIT(CDialogResize)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
m_bGripper = FALSE;
m_sizeDialog.cx = 0;
m_sizeDialog.cy = 0;
m_ptMinTrackSize.x = -1;
m_ptMinTrackSize.y = -1;
}
void CDialogResize::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CDialogResize)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CDialogResize, CDialog)
//{{AFX_MSG_MAP(CDialogResize)
ON_WM_SIZE()
ON_WM_GETMINMAXINFO()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
BEGIN_DLGRESIZE_MAP(CDialogResize)
END_DLGRESIZE_MAP()
// Operations
void CDialogResize::InitResizing(BOOL bAddGripper, BOOL bUseMinTrackSize, DWORD dwForceStyle)
{
// Force specified styles (default WS_THICKFRAME | WS_CLIPCHILDREN to enable resizing border and reduce flicker)
if((GetStyle() & dwForceStyle) != dwForceStyle)
ModifyStyle(0, dwForceStyle);
// Cleanup in case of multiple initialization
// block: first check for the gripper control, destroy it if needed
{
CWnd *wndGripper = GetDlgItem(AFX_IDW_STATUS_BAR);
if (wndGripper != NULL)
{
}
}
// clear out everything else
m_arrData.RemoveAll();
m_sizeDialog.cx = 0;
m_sizeDialog.cy = 0;
m_ptMinTrackSize.x = -1;
m_ptMinTrackSize.y = -1;
// Get initial dialog client size
RECT rectDlg;
GetClientRect(&rectDlg);
m_sizeDialog.cx = rectDlg.right;
m_sizeDialog.cy = rectDlg.bottom;
// Create gripper if requested
m_bGripper = false;
if(bAddGripper)
{
// shouldn't exist already
ASSERT(!::IsWindow(::GetDlgItem(m_hWnd, AFX_IDW_STATUS_BAR)));
if(!::IsWindow(::GetDlgItem(m_hWnd, AFX_IDW_STATUS_BAR)))
{
m_wndGripper.Create(_T("SCROLLBAR"), "", WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | SBS_SIZEBOX | SBS_SIZEGRIP | SBS_SIZEBOXBOTTOMRIGHTALIGN, rectDlg, this, AFX_IDW_STATUS_BAR);
if(IsWindow(m_wndGripper.m_hWnd))
{
m_bGripper = true;
RECT rectCtl;
m_wndGripper.GetWindowRect(&rectCtl);
ScreenToClient(&rectCtl);
AfxResizeData data = {AFX_IDW_STATUS_BAR, DLSZ_MOVE_X | DLSZ_MOVE_Y | DLSZ_REPAINT | _DLSZ_GRIPPER, { rectCtl.left, rectCtl.top, rectCtl.right, rectCtl.bottom } };
m_arrData.Add(data);
}
}
}
// Get min track position if requested
if(bUseMinTrackSize)
{
RECT rect;
GetWindowRect(&rect);
m_ptMinTrackSize.x = rect.right - rect.left;
m_ptMinTrackSize.y = rect.bottom - rect.top;
}
// Walk the map and initialize data
const AfxResizeMap* pMap = GetDlgResizeMap();
ASSERT(pMap != NULL);
int nGroupStart = -1;
for(int nCount = 1; !(pMap->m_nCtlID == -1 && pMap->m_dwResizeFlags == 0); nCount++, pMap++)
{
if(pMap->m_nCtlID == -1)
{
switch(pMap->m_dwResizeFlags)
{
case _DLSZ_BEGIN_GROUP:
ASSERT(nGroupStart == -1);
nGroupStart = m_arrData.GetSize();
break;
case _DLSZ_END_GROUP:
{
ASSERT(nGroupStart != -1);
int nGroupCount = m_arrData.GetSize() - nGroupStart;
m_arrData[nGroupStart].SetGroupCount(nGroupCount);
nGroupStart = -1;
}
break;
default:
ASSERT(FALSE && _T("Invalid DLGRESIZE Map Entry"));
break;
}
}
else
{
// this ID conflicts with the default gripper one
ASSERT(m_bGripper ? (pMap->m_nCtlID != AFX_IDW_STATUS_BAR) : TRUE);
CWnd *ctl = GetDlgItem(pMap->m_nCtlID);
if (ctl)
{
RECT rectCtl;
ctl->GetWindowRect(&rectCtl);
ScreenToClient(&rectCtl);
DWORD dwGroupFlag = (nGroupStart != -1 && m_arrData.GetSize() == nGroupStart) ? _DLSZ_BEGIN_GROUP : 0;
AfxResizeData data = { pMap->m_nCtlID, pMap->m_dwResizeFlags | dwGroupFlag, { rectCtl.left, rectCtl.top, rectCtl.right, rectCtl.bottom } };
m_arrData.Add(data);
}
}
}
ASSERT((nGroupStart == -1) && _T("No End Group Entry in the DLGRESIZE Map"));
}
void CDialogResize::UpdateLayout(int cxWidth, int cyHeight)
{
ASSERT(::IsWindow(m_hWnd));
// SetRedraw(FALSE);
RECT rectGroup = { 0, 0, 0, 0 };
for(int i = 0; i < m_arrData.GetSize(); i++)
{
if((m_arrData[i].m_dwResizeFlags & _DLSZ_BEGIN_GROUP) != 0) // start of a group
{
int nGroupCount = m_arrData[i].GetGroupCount();
ASSERT(nGroupCount > 0 && i + nGroupCount - 1 < m_arrData.GetSize());
rectGroup = m_arrData[i].m_rect;
int j;
for(j = 1; j < nGroupCount; j++)
{
rectGroup.left = min(rectGroup.left, m_arrData[i + j].m_rect.left);
rectGroup.top = min(rectGroup.top, m_arrData[i + j].m_rect.top);
rectGroup.right = max(rectGroup.right, m_arrData[i + j].m_rect.right);
rectGroup.bottom = max(rectGroup.bottom, m_arrData[i + j].m_rect.bottom);
}
RECT rcThis;
RECT rcNext;
for(j = 0; j < nGroupCount; j++)
{
int xyStartNext = -1;
if((j < (nGroupCount - 1)) && ((m_arrData[i + j].m_dwResizeFlags & (DLSZ_SIZE_X | DLSZ_SIZE_Y)) != 0) && ((m_arrData[i + j + 1].m_dwResizeFlags & (DLSZ_SIZE_X | DLSZ_SIZE_Y)) != 0))
{
CWnd *ctlThis = GetDlgItem(m_arrData[i + j].m_nCtlID);
ctlThis->GetWindowRect(&rcThis);
ScreenToClient(&rcThis);
CWnd *ctlNext = GetDlgItem(m_arrData[i + j + 1].m_nCtlID);
ctlNext->GetWindowRect(&rcNext);
ScreenToClient(&rcNext);
if((m_arrData[i + j].m_dwResizeFlags & DLSZ_SIZE_X) == DLSZ_SIZE_X && (m_arrData[i + j + 1].m_dwResizeFlags & DLSZ_SIZE_X) == DLSZ_SIZE_X)
{
if(rcNext.left >= rcThis.right)
xyStartNext = m_arrData[i + j + 1].m_rect.left;
}
else
if((m_arrData[i + j].m_dwResizeFlags & DLSZ_SIZE_Y) == DLSZ_SIZE_Y && (m_arrData[i + j + 1].m_dwResizeFlags & DLSZ_SIZE_Y) == DLSZ_SIZE_Y)
{
if(rcNext.top >= rcThis.bottom)
xyStartNext = m_arrData[i + j + 1].m_rect.top;
}
}
PositionControl(cxWidth, cyHeight, rectGroup, m_arrData[i + j], true, xyStartNext);
}
// increment to skip all group controls
i += nGroupCount - 1;
}
else // one control entry
{
PositionControl(cxWidth, cyHeight, rectGroup, m_arrData[i], false);
}
}
// SetRedraw(TRUE);
Invalidate();
RedrawWindow(NULL, NULL, RDW_ERASE | RDW_INVALIDATE | RDW_UPDATENOW | RDW_ALLCHILDREN);
}
void CDialogResize::OnSize(UINT nType, int cx, int cy)
{
CDialog::OnSize(nType, cx, cy);
if(m_bGripper)
{
if(nType == SIZE_MAXIMIZED)
m_wndGripper.ShowWindow(SW_HIDE);
else
if(nType == SIZE_RESTORED)
m_wndGripper.ShowWindow(SW_SHOW);
}
if(nType != SIZE_MINIMIZED)
{
ASSERT(::IsWindow(m_hWnd));
UpdateLayout(cx, cy);
}
}
void CDialogResize::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
{
if(m_ptMinTrackSize.x != -1 && m_ptMinTrackSize.y != -1)
{
lpMMI->ptMinTrackSize = m_ptMinTrackSize;
}
CDialog::OnGetMinMaxInfo(lpMMI);
}
// Implementation
BOOL CDialogResize::PositionControl(int cxWidth, int cyHeight, RECT& rectGroup, AfxResizeData& data, bool bGroup, int xyStartNext)
{
ASSERT(::IsWindow(m_hWnd));
CWnd *ctl;
CRect rectCtl;
ctl = GetDlgItem(data.m_nCtlID);
ctl->GetWindowRect(rectCtl);
ScreenToClient(rectCtl);
if(bGroup)
{
if((data.m_dwResizeFlags & (DLSZ_SIZE_X | DLSZ_MOVE_X)) != 0)
{
rectCtl.left = rectGroup.left + ::MulDiv(data.m_rect.left - rectGroup.left, rectGroup.right - rectGroup.left + (cxWidth - m_sizeDialog.cx), rectGroup.right - rectGroup.left);
if((data.m_dwResizeFlags & DLSZ_SIZE_X) != 0)
{
if(xyStartNext != -1)
rectCtl.right = rectGroup.left + ::MulDiv(xyStartNext - rectGroup.left, rectGroup.right - rectGroup.left + (cxWidth - m_sizeDialog.cx), rectGroup.right - rectGroup.left) - (xyStartNext - data.m_rect.right);
else
rectCtl.right = rectGroup.left + ::MulDiv(data.m_rect.right - rectGroup.left, rectGroup.right - rectGroup.left + (cxWidth - m_sizeDialog.cx), rectGroup.right - rectGroup.left);
}
else
{
rectCtl.right = rectCtl.left + (data.m_rect.right - data.m_rect.left);
}
}
if((data.m_dwResizeFlags & (DLSZ_SIZE_Y | DLSZ_MOVE_Y)) != 0)
{
rectCtl.top = rectGroup.top + ::MulDiv(data.m_rect.top - rectGroup.top, rectGroup.bottom - rectGroup.top + (cyHeight - m_sizeDialog.cy), rectGroup.bottom - rectGroup.top);
if((data.m_dwResizeFlags & DLSZ_SIZE_Y) != 0)
{
if(xyStartNext != -1)
rectCtl.bottom = rectGroup.top + ::MulDiv(xyStartNext - rectGroup.top, rectGroup.bottom - rectGroup.top + (cyHeight - m_sizeDialog.cy), rectGroup.bottom - rectGroup.top) - (xyStartNext - data.m_rect.bottom);
else
rectCtl.bottom = rectGroup.top + ::MulDiv(data.m_rect.bottom - rectGroup.top, rectGroup.bottom - rectGroup.top + (cyHeight - m_sizeDialog.cy), rectGroup.bottom - rectGroup.top);
}
else
{
rectCtl.bottom = rectCtl.top + (data.m_rect.bottom - data.m_rect.top);
}
}
}
else
{
if((data.m_dwResizeFlags & (DLSZ_SIZE_X | DLSZ_MOVE_X)) != 0)
{
rectCtl.right = data.m_rect.right + (cxWidth - m_sizeDialog.cx);
if((data.m_dwResizeFlags & DLSZ_MOVE_X) != 0)
rectCtl.left = rectCtl.right - (data.m_rect.right - data.m_rect.left);
}
if((data.m_dwResizeFlags & (DLSZ_SIZE_Y | DLSZ_MOVE_Y)) != 0)
{
rectCtl.bottom = data.m_rect.bottom + (cyHeight - m_sizeDialog.cy);
if((data.m_dwResizeFlags & DLSZ_MOVE_Y) != 0)
rectCtl.top = rectCtl.bottom - (data.m_rect.bottom - data.m_rect.top);
}
}
if((data.m_dwResizeFlags & DLSZ_REPAINT) != 0)
ctl->Invalidate();
if((data.m_dwResizeFlags & (DLSZ_SIZE_X | DLSZ_SIZE_Y | DLSZ_MOVE_X | DLSZ_MOVE_Y | DLSZ_REPAINT)) != 0)
ctl->SetWindowPos(NULL, rectCtl.left, rectCtl.top, rectCtl.right - rectCtl.left, rectCtl.bottom - rectCtl.top, SWP_NOZORDER | SWP_NOACTIVATE);
return TRUE;
}