notepad2.c

C语言编程中算法数据结构中的树行代码

    if (wi.y < mi.rcWork.top)
      wi.y = mi.rcWork.top;
    if (wi.x + wi.cx > mi.rcWork.right) {
      wi.x -= (wi.x + wi.cx - mi.rcWork.right);
      if (wi.x < mi.rcWork.left)
        wi.x = mi.rcWork.left;
      if (wi.x + wi.cx > mi.rcWork.right)
        wi.cx = mi.rcWork.right - wi.x;
    }
    if (wi.y + wi.cy > mi.rcWork.bottom) {
      wi.y -= (wi.y + wi.cy - mi.rcWork.bottom);
      if (wi.y < mi.rcWork.top)
        wi.y = mi.rcWork.top;
      if (wi.y + wi.cy > mi.rcWork.bottom)
        wi.cy = mi.rcWork.bottom - wi.y;
    }
    SetRect(&rc,wi.x,wi.y,wi.x+wi.cx,wi.y+wi.cy);
    if (!IntersectRect(&rc2,&rc,&mi.rcWork)) {
      wi.y = mi.rcWork.top + 16;
      wi.cy = mi.rcWork.bottom - mi.rcWork.top - 32;
      wi.cx = min(mi.rcWork.right - mi.rcWork.left - 32,wi.cy);
      wi.x = mi.rcWork.right - wi.cx - 16;
    }
  }

  hwndMain = CreateWindowEx(
               0,
               (!flagPasteBoard) ? WC_NOTEPAD2 : WC_NOTEPAD2PASTEBOARD,
               "Notepad2",
               WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
               wi.x,
               wi.y,
               wi.cx,
               wi.cy,
               NULL,
               NULL,
               hInstance,
               NULL);

  if (wi.max)
    nCmdShow = SW_SHOWMAXIMIZED;

  if (bAlwaysOnTop)
    SetWindowPos(hwndMain,HWND_TOPMOST,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE);

  if (bTransparentMode)
    SetWindowTransparentMode(hwndMain,TRUE);

  // Current file information -- moved in front of ShowWindow()
  FileLoad(TRUE,TRUE,FALSE,FALSE,"");

  if (!flagStartAsTrayIcon) {
    ShowWindow(hwndMain,nCmdShow);
    UpdateWindow(hwndMain);
  }
  else {
    ShowWindow(hwndMain,SW_HIDE);    // trick ShowWindow()
    ShowNotifyIcon(hwndMain,TRUE);
  }

  // Pathname parameter
  if (lpFileArg /*&& !flagNewFromClipboard*/)
  {
    // Open from Directory
    if (PathIsDirectory(lpFileArg))
    {
      char tchFile[MAX_PATH];
      if (OpenFileDlg(hwndMain,tchFile,COUNTOF(tchFile),lpFileArg))
        FileLoad(FALSE,FALSE,FALSE,FALSE,tchFile);
    }
    else {
      if (FileLoad(FALSE,FALSE,FALSE,FALSE,lpFileArg)) {
        if (flagJumpTo) // Jump to position
          EditJumpTo(hwndEdit,iInitialLine,iInitialColumn);
      }
    }
    GlobalFree(lpFileArg);
  }

  // Check for /c [if no file is specified] -- even if a file is specified
  /*else */if (flagNewFromClipboard) {
    if (SendMessage(hwndEdit,SCI_CANPASTE,0,0)) {
      BOOL bAutoIndent2 = bAutoIndent;
      bAutoIndent = 0;
      EditJumpTo(hwndEdit,-1,0);
      SendMessage(hwndEdit,SCI_BEGINUNDOACTION,0,0);
      if (SendMessage(hwndEdit,SCI_GETLENGTH,0,0) > 0)
        SendMessage(hwndEdit,SCI_NEWLINE,0,0);
      SendMessage(hwndEdit,SCI_PASTE,0,0);
      SendMessage(hwndEdit,SCI_NEWLINE,0,0);
      SendMessage(hwndEdit,SCI_ENDUNDOACTION,0,0);
      bAutoIndent = bAutoIndent2;
    }
  }

  // Check for Paste Board option -- after loading files
  if (flagPasteBoard) {
    bLastCopyFromMe = TRUE;
    hwndNextCBChain = SetClipboardViewer(hwndMain);
    uidsAppTitle = IDS_APPTITLE_PASTEBOARD;
    SetWindowTitle(hwndMain,uidsAppTitle,IDS_UNTITLED,szCurFile,
      iPathNameFormat,bModified || iCodePage != iInitialCP,
      IDS_READONLY,bReadOnly);
    bLastCopyFromMe = FALSE;
  }

  // check if a lexer was specified from the command line
  if (flagLexerSpecified) {
    if (iInitialLexer >=0 && iInitialLexer < NUMLEXERS)
      Style_SetLexerFromID(hwndEdit,iInitialLexer);
  }

  // If start as tray icon, set current filename as tooltip
  if (flagStartAsTrayIcon)
    SetNotifyIconTitle(hwndMain);

  // Toolbar
  UpdateToolbar();

  // Statusbar
  UpdateStatusbar();

  return(hwndMain);

}


//=============================================================================
//
//  MainWndProc()
//
//  Messages are distributed to the MsgXXX-handlers
//
//
LRESULT CALLBACK MainWndProc(HWND hwnd,UINT umsg,WPARAM wParam,LPARAM lParam)
{
  static BOOL bHideIcon = FALSE;

  switch(umsg)
  {

    // Quickly handle painting and sizing messages, found in ScintillaWin.cxx
    // Cool idea, don't know if this has any effect... ;-)
    case WM_MOVE:
    case WM_MOUSEACTIVATE:
    case WM_NCHITTEST:
    case WM_NCCALCSIZE:
    case WM_NCPAINT:
    case WM_PAINT:
    case WM_ERASEBKGND:
    case WM_NCMOUSEMOVE:
    case WM_NCLBUTTONDOWN:
    case WM_WINDOWPOSCHANGING:
    case WM_WINDOWPOSCHANGED:
      return DefWindowProc(hwnd,umsg,wParam,lParam);

    case WM_CREATE:
      return MsgCreate(hwnd,wParam,lParam);


    case WM_DESTROY:
      {
        WINDOWPLACEMENT wndpl;

        // Terminate file watching
        InstallFileWatching(NULL);

        // GetWindowPlacement
        wndpl.length = sizeof(WINDOWPLACEMENT);
        GetWindowPlacement(hwnd,&wndpl);

        wi.x = wndpl.rcNormalPosition.left;
        wi.y = wndpl.rcNormalPosition.top;
        wi.cx = wndpl.rcNormalPosition.right - wndpl.rcNormalPosition.left;
        wi.cy = wndpl.rcNormalPosition.bottom - wndpl.rcNormalPosition.top;
        wi.max = (IsZoomed(hwnd) || (wndpl.flags & WPF_RESTORETOMAXIMIZED));

        DragAcceptFiles(hwnd,FALSE);

        // Restore clipboard chain...
        if (flagPasteBoard)
          ChangeClipboardChain(hwnd,hwndNextCBChain);

        // Destroy find / replace dialog
        if (IsWindow(hDlgFindReplace))
          DestroyWindow(hDlgFindReplace);

        // call SaveSettings() when hwndToolbar is still valid
        SaveSettings(FALSE);

        // Cleanup unwanted MRU's
        if (!bSaveRecentFiles)
          MRU_Empty(pFileMRU);
        MRU_Save(pFileMRU);
        MRU_Destroy(pFileMRU);

        if (!bSaveFindReplace) {
          MRU_Empty(mruFind);
          MRU_Empty(mruReplace);
        }
        MRU_Save(mruFind);
        MRU_Destroy(mruFind);
        MRU_Save(mruReplace);
        MRU_Destroy(mruReplace);

        // Remove tray icon if necessary
        ShowNotifyIcon(hwnd,FALSE);

        PostQuitMessage(0);
      }
      break;


    case WM_CLOSE:
      if (FileSave(FALSE,TRUE,FALSE,FALSE))
        DestroyWindow(hwnd);
      break;


    case WM_QUERYENDSESSION:
      if (FileSave(FALSE,TRUE,FALSE,FALSE))
        return TRUE;
      else
        return FALSE;


    // Reinitialize theme-dependent values and resize windows
    case 0x031A /*WM_THEMECHANGED*/:
      MsgThemeChanged(hwnd,wParam,lParam);
      break;


    // update Scintilla colors
    case WM_SYSCOLORCHANGE:
      {
        extern PEDITLEXER pLexCurrent;
        Style_SetLexer(hwndEdit,pLexCurrent);
        return DefWindowProc(hwnd,umsg,wParam,lParam);
      }


    //case WM_TIMER:
    //  break;


    case WM_SIZE:
      MsgSize(hwnd,wParam,lParam);
      break;


    case WM_SETFOCUS:
      SetFocus(hwndEdit);

      //if (bPendingChangeNotify)
      //  PostMessage(hwnd,WM_CHANGENOTIFY,0,0);
      break;


    case WM_DROPFILES:
      {
        char szBuf[MAX_PATH+40];
        HDROP hDrop = (HDROP)wParam;

        // Reset Change Notify
        //bPendingChangeNotify = FALSE;

        if (IsIconic(hwnd))
          ShowWindow(hwnd,SW_RESTORE);

        //SetForegroundWindow(hwnd);

        DragQueryFile(hDrop,0,szBuf,COUNTOF(szBuf));
        FileLoad(FALSE,FALSE,FALSE,FALSE,szBuf);

        if (DragQueryFile(hDrop,(UINT)(-1),NULL,0) > 1)
          MsgBox(MBINFO,IDS_ERR_DROP);

        DragFinish(hDrop);
      }
      break;


    case WM_COPYDATA:
      {
        PCOPYDATASTRUCT pcds = (PCOPYDATASTRUCT)lParam;

        // Reset Change Notify
        //bPendingChangeNotify = FALSE;

        if (pcds->dwData == DATA_NOTEPAD2_FILEARG)
        {
          LPSTR lpsz = LocalAlloc(LPTR,pcds->cbData);
          CopyMemory(lpsz,pcds->lpData,pcds->cbData);
          FileLoad(FALSE,FALSE,FALSE,FALSE,lpsz);
          LocalFree(lpsz);
        }
      }
      return TRUE;


    case WM_CONTEXTMENU:
    {
      HMENU hmenu;
      int imenu = 0;
      POINT pt;
      int nID = GetDlgCtrlID((HWND)wParam);

      if ((nID != IDC_EDIT) && (nID != IDC_STATUSBAR) &&
          (nID != IDC_REBAR) && (nID != IDC_TOOLBAR))
        return DefWindowProc(hwnd,umsg,wParam,lParam);

      hmenu = LoadMenu(g_hInstance,MAKEINTRESOURCE(IDR_POPUPMENU));
      //SetMenuDefaultItem(GetSubMenu(hmenu,1),0,FALSE);

      pt.x = (int)(short)LOWORD(lParam);
      pt.y = (int)(short)HIWORD(lParam);

      switch(nID)
      {
        case IDC_EDIT:
          {
            int iSelStart = SendMessage(hwndEdit,SCI_GETSELECTIONSTART,0,0);
            int iSelEnd   = SendMessage(hwndEdit,SCI_GETSELECTIONEND,0,0);

            if (iSelStart == iSelEnd && pt.x != -1 && pt.y != -1)
            {
              int iNewPos;
              POINT ptc = { pt.x, pt.y };
              ScreenToClient(hwndEdit,&ptc);
              iNewPos = SendMessage(hwndEdit,SCI_POSITIONFROMPOINT,(WPARAM)ptc.x,(LPARAM)ptc.y);
              SendMessage(hwndEdit,SCI_GOTOPOS,(WPARAM)iNewPos,0);
            }

            if (pt.x == -1 && pt.y == -1)
            {
              int iCurrentPos = SendMessage(hwndEdit,SCI_GETCURRENTPOS,0,0);
              pt.x = SendMessage(hwndEdit,SCI_POINTXFROMPOSITION,0,(LPARAM)iCurrentPos);
              pt.y = SendMessage(hwndEdit,SCI_POINTYFROMPOSITION,0,(LPARAM)iCurrentPos);
              ClientToScreen(hwndEdit,&pt);
            }
            imenu = 0;
          }
          break;

        case IDC_TOOLBAR:
        case IDC_STATUSBAR:
        case IDC_REBAR:
          if (pt.x == -1 && pt.y == -1)
            GetCursorPos(&pt);
          imenu = 1;
          break;
      }

      TrackPopupMenuEx(GetSubMenu(hmenu,imenu),
        TPM_LEFTBUTTON | TPM_RIGHTBUTTON,pt.x+1,pt.y+1,hwnd,NULL);

      DestroyMenu(hmenu);
    }
    break;


    case WM_INITMENU:
      MsgInitMenu(hwnd,wParam,lParam);
      break;


    case WM_NOTIFY:
      return MsgNotify(hwnd,wParam,lParam);


    case WM_COMMAND:
      return MsgCommand(hwnd,wParam,lParam);


    case WM_SYSCOMMAND:
      switch (wParam)
      {
        case SC_MINIMIZE:
          ShowOwnedPopups(hwnd,FALSE);
          if (bMinimizeToTray) {
            MinimizeWndToTray(hwnd);
            ShowNotifyIcon(hwnd,TRUE);
            SetNotifyIconTitle(hwnd);
            return(0);
          }
          else
            return DefWindowProc(hwnd,umsg,wParam,lParam);

        case SC_RESTORE: {
          LRESULT lrv = DefWindowProc(hwnd,umsg,wParam,lParam);
          ShowOwnedPopups(hwnd,TRUE);
          return(lrv);
        }
      }
      return DefWindowProc(hwnd,umsg,wParam,lParam);


      case WM_CHANGENOTIFY:
          SetForegroundWindow(hwnd);
          if (PathFileExists(szCurFile)) {

            if (MsgBox(MBYESNO,IDS_FILECHANGENOTIFY) == IDYES)
              FileLoad(TRUE,FALSE,TRUE,FALSE,szCurFile);
          }
          else {

            if (MsgBox(MBYESNO,IDS_FILECHANGENOTIFY2) == IDYES)
              FileSave(TRUE,FALSE,FALSE,FALSE);
          }

          if (!bRunningWatch)
            InstallFileWatching(szCurFile);
        break;


    //// This message is posted before Notepad2 reactivates itself
    //case WM_CHANGENOTIFYCLEAR:
    //  bPendingChangeNotify = FALSE;
    //  break;


    case WM_DRAWCLIPBOARD:
      if (!bLastCopyFromMe) {
        if (SendMessage(hwndEdit,SCI_CANPASTE,0,0)) {
          BOOL bAutoIndent2 = bAutoIndent;
          bAutoIndent = 0;
          EditJumpTo(hwndEdit,-1,0);