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329 lines
9.3 KiB
329 lines
9.3 KiB
#include "stdafx.h"
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#include "MagnetFrame.h"
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using namespace SOUI;
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const int KDistMin = 10; //小于该值代表两个窗口自动吸附
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CMagnetFrame::CMagnetFrame(void):m_hMainWnd(NULL)
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{
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}
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CMagnetFrame::~CMagnetFrame(void)
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{
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}
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BOOL CMagnetFrame::SubclassWnd(HWND hWnd)
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{
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if(GetWindowLongPtr(hWnd,GWLP_USERDATA)!=0)
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return FALSE;//在吸附框架中的窗口不能使用了USERDATA，因为这个值要被吸附框架占用.
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WNDPROC pWndProc = (WNDPROC)GetWindowLongPtr(hWnd,GWLP_WNDPROC);
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if(pWndProc == &CMagnetFrame::MagnetWndProc) return FALSE;
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SetWindowLongPtr(hWnd,GWLP_USERDATA,(ULONG_PTR)this);
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SetWindowLongPtr(hWnd,GWLP_WNDPROC,(ULONG_PTR)&CMagnetFrame::MagnetWndProc);
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WndData wd={pWndProc,{AM_NULL,AA_NULL,0},0};
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m_mapOldProc[hWnd] = wd;
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return TRUE;
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}
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BOOL CMagnetFrame::UnsubclassWnd(HWND hWnd)
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{
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SASSERT(m_mapOldProc.Lookup(hWnd));
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WNDPROC pWndProc = m_mapOldProc[hWnd].pProc;
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m_mapOldProc.RemoveKey(hWnd);
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SetWindowLongPtr(hWnd,GWLP_WNDPROC,(ULONG_PTR)pWndProc);
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SetWindowLongPtr(hWnd,GWLP_USERDATA,0);
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return TRUE;
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}
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bool IsNeighbour(int v1,int v2)
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{
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return abs(v1-v2) < KDistMin;
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}
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int CalcDistance(int v1,int v2)
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{
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int nDist = v2-v1;
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if(abs(nDist) < KDistMin) nDist =0;
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return nDist;
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}
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CMagnetFrame::AtatchInfo CMagnetFrame::CalcAttachMode(HWND hSubWnd,CRect rcSub)
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{
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SASSERT(m_hMainWnd);
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CRect rcMain;
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::GetWindowRect(m_hMainWnd,&rcMain);
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if(rcSub.IsRectEmpty()) ::GetWindowRect(hSubWnd,&rcSub);
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AtatchInfo ai = {AM_NULL,AA_NULL,0};
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if(IsNeighbour(rcMain.left,rcSub.right))
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{
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ai.am = AM_LEFT;
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int nDist = CalcDistance(rcMain.bottom,rcSub.bottom);
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if(nDist == 0) ai.aa = AA_BOTTOM;
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else if(0 == (nDist = CalcDistance(rcMain.top,rcSub.top)))
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ai.aa = AA_TOP;
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else
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ai.aa = AA_NULL,ai.nDist = nDist;
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}
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else if(IsNeighbour(rcMain.right,rcSub.left))
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{
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ai.am = AM_RIGHT;
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int nDist = CalcDistance(rcMain.bottom,rcSub.bottom);
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if(nDist == 0) ai.aa = AA_BOTTOM;
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else if(0 == (nDist = CalcDistance(rcMain.top,rcSub.top)))
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ai.aa = AA_TOP;
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else
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ai.aa = AA_NULL,ai.nDist = nDist;
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}else if(IsNeighbour(rcMain.top,rcSub.bottom))
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{
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ai.am = AM_TOP;
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int nDist = CalcDistance(rcMain.right,rcSub.right);
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if(nDist == 0) ai.aa = AA_RIGHT;
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else if(0 == (nDist = CalcDistance(rcMain.left,rcSub.left)))
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ai.aa = AA_LEFT;
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else
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ai.aa = AA_NULL,ai.nDist = nDist;
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}else if(IsNeighbour(rcMain.bottom,rcSub.top))
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{
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ai.am = AM_BOTTOM;
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int nDist = CalcDistance(rcMain.right,rcSub.right);
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if(nDist == 0) ai.aa = AA_RIGHT;
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else if(0 == (nDist = CalcDistance(rcMain.left,rcSub.left)))
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ai.aa = AA_LEFT;
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else
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ai.aa = AA_NULL,ai.nDist = nDist;
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}
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return ai;
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}
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void CMagnetFrame::UpdateSubWndPos(HWND hSubWnd,AtatchInfo ai)
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{
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CRect rcSub,rcMain;
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::GetWindowRect(m_hMainWnd,&rcMain);
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::GetWindowRect(hSubWnd,&rcSub);
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switch(ai.am)
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{
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case AM_RIGHT:
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{
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int y;
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switch(ai.aa)
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{
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case AA_TOP:
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y=rcMain.top;
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break;
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case AA_BOTTOM:
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y=rcMain.bottom - rcSub.Height();
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break;
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default:
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y=rcMain.top + ai.nDist;
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break;
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}
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::MoveWindow(hSubWnd,rcMain.right,y,rcSub.Width(),rcSub.Height(),TRUE);
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}
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break;
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case AM_LEFT:
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{
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int y;
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switch(ai.aa)
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{
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case AA_TOP:
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y=rcMain.top;
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break;
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case AA_BOTTOM:
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y=rcMain.bottom - rcSub.Height();
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break;
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default:
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y=rcMain.top + ai.nDist;
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break;
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}
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::MoveWindow(hSubWnd,rcMain.left - rcSub.Width(),y,rcSub.Width(),rcSub.Height(),TRUE);
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}
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break;
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case AM_TOP:
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{
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int x;
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switch(ai.aa)
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{
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case AA_LEFT:
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x=rcMain.left;
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break;
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case AA_RIGHT:
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x=rcMain.right - rcSub.Width();
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break;
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default:
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x=rcMain.left + ai.nDist;
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break;
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}
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::MoveWindow(hSubWnd,x,rcMain.top - rcSub.Height(),rcSub.Width(),rcSub.Height(),TRUE);
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}
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break;
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case AM_BOTTOM:
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{
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int x;
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switch(ai.aa)
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{
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case AA_LEFT:
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x=rcMain.left;
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break;
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case AA_RIGHT:
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x=rcMain.right - rcSub.Width();
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break;
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default:
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x=rcMain.left + ai.nDist;
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break;
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}
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::MoveWindow(hSubWnd,x,rcMain.bottom,rcSub.Width(),rcSub.Height(),TRUE);
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}
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break;
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}
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}
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LRESULT CALLBACK CMagnetFrame::MagnetWndProc(HWND hWnd, UINT uMsg, WPARAM wp, LPARAM lp)
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{
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CMagnetFrame *pThis = (CMagnetFrame*)GetWindowLongPtr(hWnd,GWLP_USERDATA);
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SASSERT(pThis->m_mapOldProc.Lookup(hWnd));
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WndData & wd = pThis->m_mapOldProc[hWnd];
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if(uMsg == WM_MOVE || uMsg == WM_SIZE)
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{
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if(hWnd == pThis->m_hMainWnd)
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{//主窗口移动,移动所有和主窗口有吸附关系的附属窗口
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CRect rcMain;
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::GetWindowRect(pThis->m_hMainWnd,&rcMain);
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SPOSITION pos = pThis->m_mapOldProc.GetStartPosition();
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while(pos)
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{
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WNDDATAMAP::CPair * pData = pThis->m_mapOldProc.GetNext(pos);
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if(pData->m_key == hWnd) continue;
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WndData & subwd = pData->m_value;
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if(subwd.ai.am!=AM_NULL)
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{
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subwd.bFromThis = TRUE;
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pThis->UpdateSubWndPos(pData->m_key,subwd.ai);
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subwd.bFromThis = FALSE;
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}
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}
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}else if(!wd.bFromThis)
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{//附属窗口移动,更新与主窗口的吸附关系
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AtatchInfo ai = pThis->CalcAttachMode(hWnd);
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//自动吸附
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if(ai.am != AM_NULL)
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{
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wd.bFromThis = TRUE;
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pThis->UpdateSubWndPos(hWnd,ai);
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wd.bFromThis = FALSE;
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}
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wd.ai = ai;
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}
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}
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else if(uMsg == WM_WINDOWPOSCHANGING && ! wd.bFromThis && hWnd != pThis->m_hMainWnd)
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{//窗口移动前，检测窗口吸附类型，如果还在吸附范围内，则不移动窗口
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WINDOWPOS * pWndPos = (WINDOWPOS*)lp;
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if(!(pWndPos->flags & SWP_NOMOVE))
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{
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CRect rcMain,rcSub(CPoint(pWndPos->x,pWndPos->y),CSize(pWndPos->cx,pWndPos->cy));
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AtatchInfo ai = pThis->CalcAttachMode(hWnd,rcSub);
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::GetWindowRect(pThis->m_hMainWnd,&rcMain);
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if(ai.am != AM_NULL)
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{
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switch(ai.am)
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{
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case AM_RIGHT:
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pWndPos->x = rcMain.right;
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break;
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case AM_LEFT:
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pWndPos->x = rcMain.left - pWndPos->cx;
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break;
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case AM_TOP:
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pWndPos->y = rcMain.top - pWndPos->cy;
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break;
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case AM_BOTTOM:
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pWndPos->y = rcMain.bottom;
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break;
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}
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switch(ai.am)
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{
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case AM_LEFT:case AM_RIGHT:
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{
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switch(ai.aa)
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{
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case AA_TOP:
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pWndPos->y = rcMain.top;
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break;
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case AA_BOTTOM:
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pWndPos->y = rcMain.bottom - rcSub.Height();
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break;
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}
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}
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break;
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case AM_TOP:case AM_BOTTOM:
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{
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switch(ai.aa)
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{
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case AA_LEFT:
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pWndPos->x = rcMain.left;
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break;
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case AA_RIGHT:
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pWndPos->x = rcMain.right - rcSub.Width();
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break;
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}
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}
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break;
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}
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}
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}
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}
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return wd.pProc(hWnd,uMsg,wp,lp);
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}
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BOOL CMagnetFrame::RemoveSubWnd(HWND hWnd)
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{
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SASSERT(m_hMainWnd);
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SASSERT(hWnd);
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if(!m_mapOldProc.Lookup(hWnd)) return FALSE;
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UnsubclassWnd(hWnd);
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return TRUE;
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}
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BOOL CMagnetFrame::AddSubWnd(HWND hWnd,ATTACHMODE am,ATTACHALIGN aa,int nDist/* = 0*/)
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{
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SASSERT(m_hMainWnd);
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SASSERT(hWnd != m_hMainWnd);
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if(m_mapOldProc.Lookup(hWnd)) return FALSE;
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SubclassWnd(hWnd);
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if(am != AM_NULL)
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{
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AtatchInfo ai = {am,aa,nDist};
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WndData wd = m_mapOldProc[hWnd];
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wd.ai = ai;
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wd.bFromThis = TRUE;
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UpdateSubWndPos(hWnd,ai);
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wd.bFromThis = FALSE;
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}
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return TRUE;
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}
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void CMagnetFrame::SetMainWnd(HWND hWnd)
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{
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SASSERT(!m_hMainWnd && hWnd);
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m_hMainWnd = hWnd;
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SubclassWnd(hWnd);
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}
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