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// ResizableLayout.h: interface for the CResizableLayout class.
//
/////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2000-2002 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!
//
/////////////////////////////////////////////////////////////////////////////
#if !defined(AFX_RESIZABLELAYOUT_H__INCLUDED_)
#define AFX_RESIZABLELAYOUT_H__INCLUDED_
#include <afxtempl.h>
#include "ResizableMsgSupport.h"
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// useful compatibility constants (the only one required is NOANCHOR)
const CSize NOANCHOR(-1,-1),
TOP_LEFT(0,0), TOP_CENTER(50,0), TOP_RIGHT(100,0),
MIDDLE_LEFT(0,50), MIDDLE_CENTER(50,50), MIDDLE_RIGHT(100,50),
BOTTOM_LEFT(0,100), BOTTOM_CENTER(50,100), BOTTOM_RIGHT(100,100);
class CResizableLayout
{
protected:
class LayoutInfo
{
public:
HWND hWnd;
UINT nCallbackID;
CString sWndClass;
// upper-left corner
SIZE sizeTypeTL;
SIZE sizeMarginTL;
// bottom-right corner
SIZE sizeTypeBR;
SIZE sizeMarginBR;
// custom window support
BOOL bMsgSupport;
RESIZEPROPERTIES properties;
public:
LayoutInfo() : hWnd(NULL), nCallbackID(0), bMsgSupport(FALSE)
{
sizeTypeTL.cx = 0;
sizeTypeTL.cy = 0;
sizeMarginTL.cx = 0;
sizeMarginTL.cy = 0;
sizeTypeBR.cx = 0;
sizeTypeBR.cy = 0;
sizeMarginBR.cx = 0;
sizeMarginBR.cy = 0;
memset(&properties, 0, sizeof properties);
}
LayoutInfo(HWND hwnd, SIZE tl_t, SIZE tl_m,
SIZE br_t, SIZE br_m, CString classname)
: hWnd(hwnd), nCallbackID(0),
sWndClass(classname), bMsgSupport(FALSE),
sizeTypeTL(tl_t), sizeMarginTL(tl_m),
sizeTypeBR(br_t), sizeMarginBR(br_m)
{
memset(&properties, 0, sizeof properties);
}
};
private:
// list of repositionable controls
CMap<HWND, HWND, POSITION, POSITION> m_mapLayout;
CList<LayoutInfo, LayoutInfo&> m_listLayout;
CList<LayoutInfo, LayoutInfo&> m_listLayoutCB;
void ClipChildWindow(const CResizableLayout::LayoutInfo &layout, CRgn* pRegion);
void CalcNewChildPosition(const CResizableLayout::LayoutInfo &layout,
const CRect &rectParent, CRect &rectChild, UINT& uFlags);
protected:
// override to initialize resize properties (clipping, refresh)
virtual void InitResizeProperties(CResizableLayout::LayoutInfo& layout);
// override to specify clipping for unsupported windows
virtual BOOL LikesClipping(const CResizableLayout::LayoutInfo &layout);
// override to specify refresh for unsupported windows
virtual BOOL NeedsRefresh(const CResizableLayout::LayoutInfo &layout,
const CRect &rectOld, const CRect &rectNew);
// paint the background on the given DC (for XP theme's compatibility)
void EraseBackground(CDC* pDC);
// clip out child windows from the given DC (support old code)
void ClipChildren(CDC* pDC);
// get the clipping region (without clipped child windows)
void GetClippingRegion(CRgn* pRegion);
// override for scrollable or expanding parent windows
virtual void GetTotalClientRect(LPRECT lpRect);
// add anchors to a control, given its HWND
void AddAnchor(HWND hWnd, CSize sizeTypeTL, CSize sizeTypeBR = NOANCHOR);
// add anchors to a control, given its ID
void AddAnchor(UINT nID, CSize sizeTypeTL, CSize sizeTypeBR = NOANCHOR)
{
AddAnchor(::GetDlgItem(GetResizableWnd()->GetSafeHwnd(), nID),
sizeTypeTL, sizeTypeBR);
}
// add a callback (control ID or HWND is unknown or may change)
void AddAnchorCallback(UINT nCallbackID);
// get rect of an anchored window, given the parent's client area
BOOL GetAnchorPosition(HWND hWnd, const CRect &rectParent,
CRect &rectChild, UINT* lpFlags = NULL)
{
POSITION pos;
if (!m_mapLayout.Lookup(hWnd, pos))
return FALSE;
UINT uTmpFlags;
CalcNewChildPosition(m_listLayout.GetAt(pos), rectParent, rectChild,
(lpFlags != NULL) ? (*lpFlags) : uTmpFlags);
return TRUE;
}
// get rect of an anchored window, given the parent's client area
BOOL GetAnchorPosition(UINT nID, const CRect &rectParent,
CRect &rectChild, UINT* lpFlags = NULL)
{
return GetAnchorPosition(::GetDlgItem(GetResizableWnd()->GetSafeHwnd(), nID),
rectParent, rectChild, lpFlags);
}
// remove an anchored control from the layout, given its HWND
BOOL RemoveAnchor(HWND hWnd)
{
POSITION pos;
if (!m_mapLayout.Lookup(hWnd, pos))
return FALSE;
m_listLayout.RemoveAt(pos);
return m_mapLayout.RemoveKey(hWnd);
}
// remove an anchored control from the layout, given its HWND
BOOL RemoveAnchor(UINT nID)
{
return RemoveAnchor(::GetDlgItem(GetResizableWnd()->GetSafeHwnd(), nID));
}
// reset layout content
void RemoveAllAnchors()
{
m_mapLayout.RemoveAll();
m_listLayout.RemoveAll();
m_listLayoutCB.RemoveAll();
}
// adjust children's layout, when parent's size changes
void ArrangeLayout();
// override to provide dynamic control's layout info
virtual BOOL ArrangeLayoutCallback(CResizableLayout::LayoutInfo& layout);
// override to provide the parent window
virtual CWnd* GetResizableWnd() = 0;
public:
CResizableLayout() { }
virtual ~CResizableLayout()
{
// just for safety
RemoveAllAnchors();
}
};
#endif // !defined(AFX_RESIZABLELAYOUT_H__INCLUDED_)
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