tuiwin.c

gdb-6.0 linux 下的调试工具

      if (buf != (char *) NULL)
	tuiFree (buf);
    }
  else
    printf_filtered (WIN_HEIGHT_USAGE);

  return;
}				/* _tuiSetWinHeight */

/*
   ** _tuiSetWinHeight_command().
   **        Set the height of the specified window, with va_list.
 */
static void
_tuiSetWinHeight_command (char *arg, int fromTTY)
{
  /* Make sure the curses mode is enabled.  */
  tui_enable ();
  _tuiSetWinHeight (arg, fromTTY);
}


/*
   ** _tuiXDBsetWinHeight().
   **        XDB Compatibility command for setting the window height.  This will
   **        increase or decrease the command window by the specified amount.
 */
static void
_tuiXDBsetWinHeight (char *arg, int fromTTY)
{
  /* Make sure the curses mode is enabled.  */
  tui_enable ();
  if (arg != (char *) NULL)
    {
      int inputNo = atoi (arg);

      if (inputNo > 0)
	{			/* Add 1 for the locator */
	  int newHeight = termHeight () - (inputNo + 1);

	  if (!_newHeightOk (winList[CMD_WIN], newHeight) ||
	      _tuiAdjustWinHeights (winList[CMD_WIN],
				    newHeight) == TUI_FAILURE)
	    warning ("Invalid window height specified.\n%s",
		     XDBWIN_HEIGHT_USAGE);
	}
      else
	warning ("Invalid window height specified.\n%s",
		 XDBWIN_HEIGHT_USAGE);
    }
  else
    warning ("Invalid window height specified.\n%s", XDBWIN_HEIGHT_USAGE);

  return;
}				/* _tuiXDBsetWinHeight */

/*
   ** _tuiSetWinHeight_command().
   **        Set the height of the specified window, with va_list.
 */
static void
_tuiXDBsetWinHeight_command (char *arg, int fromTTY)
{
  _tuiXDBsetWinHeight (arg, fromTTY);
}


/*
   ** _tuiAdjustWinHeights().
   **        Function to adjust all window heights around the primary
 */
static TuiStatus
_tuiAdjustWinHeights (TuiWinInfoPtr primaryWinInfo, int newHeight)
{
  TuiStatus status = TUI_FAILURE;

  if (_newHeightOk (primaryWinInfo, newHeight))
    {
      status = TUI_SUCCESS;
      if (newHeight != primaryWinInfo->generic.height)
	{
	  int diff;
	  TuiWinInfoPtr winInfo;
	  TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
	  TuiLayoutType curLayout = currentLayout ();

	  diff = (newHeight - primaryWinInfo->generic.height) * (-1);
	  if (curLayout == SRC_COMMAND || curLayout == DISASSEM_COMMAND)
	    {
	      TuiWinInfoPtr srcWinInfo;

	      _makeInvisibleAndSetNewHeight (primaryWinInfo, newHeight);
	      if (primaryWinInfo->generic.type == CMD_WIN)
		{
		  winInfo = (TuiWinInfoPtr) (sourceWindows ())->list[0];
		  srcWinInfo = winInfo;
		}
	      else
		{
		  winInfo = winList[CMD_WIN];
		  srcWinInfo = primaryWinInfo;
		}
	      _makeInvisibleAndSetNewHeight (winInfo,
					     winInfo->generic.height + diff);
	      cmdWin->generic.origin.y = locator->origin.y + 1;
	      _makeVisibleWithNewHeight (winInfo);
	      _makeVisibleWithNewHeight (primaryWinInfo);
	      if (srcWinInfo->generic.contentSize <= 0)
		tuiEraseSourceContent (srcWinInfo, EMPTY_SOURCE_PROMPT);
	    }
	  else
	    {
	      TuiWinInfoPtr firstWin, secondWin;

	      if (curLayout == SRC_DISASSEM_COMMAND)
		{
		  firstWin = srcWin;
		  secondWin = disassemWin;
		}
	      else
		{
		  firstWin = dataWin;
		  secondWin = (TuiWinInfoPtr) (sourceWindows ())->list[0];
		}
	      if (primaryWinInfo == cmdWin)
		{		/*
				   ** Split the change in height accross the 1st & 2nd windows
				   ** adjusting them as well.
				 */
		  int firstSplitDiff = diff / 2;	/* subtract the locator */
		  int secondSplitDiff = firstSplitDiff;

		  if (diff % 2)
		    {
		      if (firstWin->generic.height >
			  secondWin->generic.height)
			if (diff < 0)
			  firstSplitDiff--;
			else
			  firstSplitDiff++;
		      else
			{
			  if (diff < 0)
			    secondSplitDiff--;
			  else
			    secondSplitDiff++;
			}
		    }
		  /* make sure that the minimum hieghts are honored */
		  while ((firstWin->generic.height + firstSplitDiff) < 3)
		    {
		      firstSplitDiff++;
		      secondSplitDiff--;
		    }
		  while ((secondWin->generic.height + secondSplitDiff) < 3)
		    {
		      secondSplitDiff++;
		      firstSplitDiff--;
		    }
		  _makeInvisibleAndSetNewHeight (
						  firstWin,
				 firstWin->generic.height + firstSplitDiff);
		  secondWin->generic.origin.y = firstWin->generic.height - 1;
		  _makeInvisibleAndSetNewHeight (
		    secondWin, secondWin->generic.height + secondSplitDiff);
		  cmdWin->generic.origin.y = locator->origin.y + 1;
		  _makeInvisibleAndSetNewHeight (cmdWin, newHeight);
		}
	      else
		{
		  if ((cmdWin->generic.height + diff) < 1)
		    {		/*
				   ** If there is no way to increase the command window
				   ** take real estate from the 1st or 2nd window.
				 */
		      if ((cmdWin->generic.height + diff) < 1)
			{
			  int i;
			  for (i = cmdWin->generic.height + diff;
			       (i < 1); i++)
			    if (primaryWinInfo == firstWin)
			      secondWin->generic.height--;
			    else
			      firstWin->generic.height--;
			}
		    }
		  if (primaryWinInfo == firstWin)
		    _makeInvisibleAndSetNewHeight (firstWin, newHeight);
		  else
		    _makeInvisibleAndSetNewHeight (
						    firstWin,
						  firstWin->generic.height);
		  secondWin->generic.origin.y = firstWin->generic.height - 1;
		  if (primaryWinInfo == secondWin)
		    _makeInvisibleAndSetNewHeight (secondWin, newHeight);
		  else
		    _makeInvisibleAndSetNewHeight (
				      secondWin, secondWin->generic.height);
		  cmdWin->generic.origin.y = locator->origin.y + 1;
		  if ((cmdWin->generic.height + diff) < 1)
		    _makeInvisibleAndSetNewHeight (cmdWin, 1);
		  else
		    _makeInvisibleAndSetNewHeight (
				     cmdWin, cmdWin->generic.height + diff);
		}
	      _makeVisibleWithNewHeight (cmdWin);
	      _makeVisibleWithNewHeight (secondWin);
	      _makeVisibleWithNewHeight (firstWin);
	      if (firstWin->generic.contentSize <= 0)
		tuiEraseSourceContent (firstWin, EMPTY_SOURCE_PROMPT);
	      if (secondWin->generic.contentSize <= 0)
		tuiEraseSourceContent (secondWin, EMPTY_SOURCE_PROMPT);
	    }
	}
    }

  return status;
}				/* _tuiAdjustWinHeights */


/*
   ** _makeInvisibleAndSetNewHeight().
   **        Function make the target window (and auxillary windows associated
   **        with the targer) invisible, and set the new height and location.
 */
static void
_makeInvisibleAndSetNewHeight (TuiWinInfoPtr winInfo, int height)
{
  int i;
  TuiGenWinInfoPtr genWinInfo;


  m_beInvisible (&winInfo->generic);
  winInfo->generic.height = height;
  if (height > 1)
    winInfo->generic.viewportHeight = height - 1;
  else
    winInfo->generic.viewportHeight = height;
  if (winInfo != cmdWin)
    winInfo->generic.viewportHeight--;

  /* Now deal with the auxillary windows associated with winInfo */
  switch (winInfo->generic.type)
    {
    case SRC_WIN:
    case DISASSEM_WIN:
      genWinInfo = winInfo->detail.sourceInfo.executionInfo;
      m_beInvisible (genWinInfo);
      genWinInfo->height = height;
      genWinInfo->origin.y = winInfo->generic.origin.y;
      if (height > 1)
	genWinInfo->viewportHeight = height - 1;
      else
	genWinInfo->viewportHeight = height;
      if (winInfo != cmdWin)
	genWinInfo->viewportHeight--;

      if (m_hasLocator (winInfo))
	{
	  genWinInfo = locatorWinInfoPtr ();
	  m_beInvisible (genWinInfo);
	  genWinInfo->origin.y = winInfo->generic.origin.y + height;
	}
      break;
    case DATA_WIN:
      /* delete all data item windows */
      for (i = 0; i < winInfo->generic.contentSize; i++)
	{
	  genWinInfo = (TuiGenWinInfoPtr) & ((TuiWinElementPtr)
		      winInfo->generic.content[i])->whichElement.dataWindow;
	  tuiDelwin (genWinInfo->handle);
	  genWinInfo->handle = (WINDOW *) NULL;
	}
      break;
    default:
      break;
    }
}


/*
   ** _makeVisibleWithNewHeight().
   **        Function to make the windows with new heights visible.
   **        This means re-creating the windows' content since the window
   **        had to be destroyed to be made invisible.
 */
static void
_makeVisibleWithNewHeight (TuiWinInfoPtr winInfo)
{
  struct symtab *s;

  m_beVisible (&winInfo->generic);
  checkAndDisplayHighlightIfNeeded (winInfo);
  switch (winInfo->generic.type)
    {
    case SRC_WIN:
    case DISASSEM_WIN:
      freeWinContent (winInfo->detail.sourceInfo.executionInfo);
      m_beVisible (winInfo->detail.sourceInfo.executionInfo);
      if (winInfo->generic.content != (OpaquePtr) NULL)
	{
	  TuiLineOrAddress lineOrAddr;
	  struct symtab_and_line cursal
	    = get_current_source_symtab_and_line ();

	  if (winInfo->generic.type == SRC_WIN)
	    lineOrAddr.lineNo =
	      winInfo->detail.sourceInfo.startLineOrAddr.lineNo;
	  else
	    lineOrAddr.addr =
	      winInfo->detail.sourceInfo.startLineOrAddr.addr;
	  freeWinContent (&winInfo->generic);
	  tuiUpdateSourceWindow (winInfo,
				 cursal.symtab, lineOrAddr, TRUE);
	}
      else if (deprecated_selected_frame != (struct frame_info *) NULL)
	{
	  TuiLineOrAddress line;
	  struct symtab_and_line cursal = get_current_source_symtab_and_line ();


	  s = find_pc_symtab (get_frame_pc (deprecated_selected_frame));
	  if (winInfo->generic.type == SRC_WIN)
	    line.lineNo = cursal.line;
	  else
	    {
	      find_line_pc (s, cursal.line, &line.addr);
	    }
	  tuiUpdateSourceWindow (winInfo, s, line, TRUE);
	}
      if (m_hasLocator (winInfo))
	{
	  m_beVisible (locatorWinInfoPtr ());
	  tuiShowLocatorContent ();
	}
      break;
    case DATA_WIN:
      tuiDisplayAllData ();
      break;
    case CMD_WIN:
      winInfo->detail.commandInfo.curLine = 0;
      winInfo->detail.commandInfo.curch = 0;
      wmove (winInfo->generic.handle,
	     winInfo->detail.commandInfo.curLine,
	     winInfo->detail.commandInfo.curch);
      break;
    default:
      break;
    }

  return;
}				/* _makeVisibleWithNewHeight */


static int
_newHeightOk (TuiWinInfoPtr primaryWinInfo, int newHeight)
{
  int ok = (newHeight < termHeight ());

  if (ok)
    {
      int diff;
      TuiLayoutType curLayout = currentLayout ();

      diff = (newHeight - primaryWinInfo->generic.height) * (-1);
      if (curLayout == SRC_COMMAND || curLayout == DISASSEM_COMMAND)
	{
	  ok = ((primaryWinInfo->generic.type == CMD_WIN &&
		 newHeight <= (termHeight () - 4) &&
		 newHeight >= MIN_CMD_WIN_HEIGHT) ||
		(primaryWinInfo->generic.type != CMD_WIN &&
		 newHeight <= (termHeight () - 2) &&
		 newHeight >= MIN_WIN_HEIGHT));
	  if (ok)
	    {			/* check the total height */
	      TuiWinInfoPtr winInfo;

	      if (primaryWinInfo == cmdWin)
		winInfo = (TuiWinInfoPtr) (sourceWindows ())->list[0];
	      else
		winInfo = cmdWin;
	      ok = ((newHeight +
		     (winInfo->generic.height + diff)) <= termHeight ());
	    }
	}
      else
	{
	  int curTotalHeight, totalHeight, minHeight = 0;
	  TuiWinInfoPtr firstWin, secondWin;

	  if (curLayout == SRC_DISASSEM_COMMAND)
	    {
	      firstWin = srcWin;
	      secondWin = disassemWin;
	    }
	  else
	    {
	      firstWin = dataWin;
	      secondWin = (TuiWinInfoPtr) (sourceWindows ())->list[0];
	    }
	  /*
	     ** We could simply add all the heights to obtain the same result
	     ** but below is more explicit since we subtract 1 for the
	     ** line that the first and second windows share, and add one
	     ** for the locator.
	   */
	  totalHeight = curTotalHeight =
	    (firstWin->generic.height + secondWin->generic.height - 1)
	    + cmdWin->generic.height + 1 /*locator */ ;
	  if (primaryWinInfo == cmdWin)
	    {
	      /* locator included since first & second win share a line */
	      ok = ((firstWin->generic.height +
		     secondWin->generic.height + diff) >=
		    (MIN_WIN_HEIGHT * 2) &&
		    newHeight >= MIN_CMD_WIN_HEIGHT);
	      if (ok)
		{
		  totalHeight = newHeight + (firstWin->generic.height +
					  secondWin->generic.height + diff);
		  minHeight = MIN_CMD_WIN_HEIGHT;
		}
	    }
	  else
	    {
	      minHeight = MIN_WIN_HEIGHT;
	      /*
	         ** First see if we can increase/decrease the command
	         ** window.  And make sure that the command window is
	         ** at least 1 line
	       */
	      ok = ((cmdWin->generic.height + diff) > 0);
	      if (!ok)
		{		/*
				   ** Looks like we have to increase/decrease one of
				   ** the other windows
				 */
		  if (primaryWinInfo == firstWin)
		    ok = (secondWin->generic.height + diff) >= minHeight;
		  else
		    ok = (firstWin->generic.height + diff) >= minHeight;
		}
	      if (ok)
		{
		  if (primaryWinInfo == firstWin)
		    totalHeight = newHeight +
		      secondWin->generic.height +
		      cmdWin->generic.height + diff;
		  else
		    totalHeight = newHeight +
		      firstWin->generic.height +
		      cmdWin->generic.height + diff;
		}
	    }
	  /*
	     ** Now make sure that the proposed total height doesn't exceed
	     ** the old total height.
	   */
	  if (ok)
	    ok = (newHeight >= minHeight && totalHeight <= curTotalHeight);
	}
    }

  return ok;
}				/* _newHeightOk */


/*
   ** _parseScrollingArgs().
 */
static void
_parseScrollingArgs (char *arg, TuiWinInfoPtr * winToScroll, int *numToScroll)
{
  if (numToScroll)
    *numToScroll = 0;
  *winToScroll = tuiWinWithFocus ();

  /*
     ** First set up the default window to scroll, in case there is no
     ** window name arg
   */
  if (arg != (char *) NULL)
    {
      char *buf, *bufPtr;

      /* process the number of lines to scroll */
      buf = bufPtr = xstrdup (arg);
      if (isdigit (*bufPtr))
	{
	  char *numStr;

	  numStr = bufPtr;
	  bufPtr = strchr (bufPtr, ' ');
	  if (bufPtr != (char *) NULL)
	    {
	      *bufPtr = (char) 0;
	      if (numToScroll)
		*numToScroll = atoi (numStr);
	      bufPtr++;
	    }
	  else if (numToScroll)
	    *numToScroll = atoi (numStr);
	}

      /* process the window name if one is specified */
      if (bufPtr != (char *) NULL)
	{
	  char *wname;
	  int i;

	  if (*bufPtr == ' ')
	    while (*(++bufPtr) == ' ')
	      ;

	  if (*bufPtr != (char) 0)
	    wname = bufPtr;
	  else
	    wname = "?";
	  
	  /* Validate the window name */
	  for (i = 0; i < strlen (wname); i++)
	    wname[i] = toupper (wname[i]);
	  *winToScroll = partialWinByName (wname);

	  if (*winToScroll == (TuiWinInfoPtr) NULL ||
	      !(*winToScroll)->generic.isVisible)
	    warning ("Invalid window specified. \n\
The window name specified must be valid and visible.\n");
	  else if (*winToScroll == cmdWin)
	    *winToScroll = (TuiWinInfoPtr) (sourceWindows ())->list[0];
	}
      tuiFree (buf);
    }

  return;
}				/* _parseScrollingArgs */