tui-layout.c

这个是LINUX下的GDB调度工具的源码

static void
tui_handle_xdb_layout (struct tui_layout_def * layout_def)
{
  if (layout_def->split)
    {
      tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
      tui_set_win_focus_to (tui_win_list[layout_def->display_mode]);
    }
  else
    {
      if (layout_def->display_mode == SRC_WIN)
	tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
      else
	tui_set_layout (DISASSEM_DATA_COMMAND, layout_def->regs_display_type);
    }
}


static void
tui_toggle_layout_command (char *arg, int from_tty)
{
  struct tui_layout_def * layout_def = tui_layout_def ();

  /* Make sure the curses mode is enabled.  */
  tui_enable ();
  if (layout_def->display_mode == SRC_WIN)
    layout_def->display_mode = DISASSEM_WIN;
  else
    layout_def->display_mode = SRC_WIN;

  if (!layout_def->split)
    tui_handle_xdb_layout (layout_def);
}


static void
tui_toggle_split_layout_command (char *arg, int from_tty)
{
  struct tui_layout_def * layout_def = tui_layout_def ();

  /* Make sure the curses mode is enabled.  */
  tui_enable ();
  layout_def->split = (!layout_def->split);
  tui_handle_xdb_layout (layout_def);
}


static void
tui_layout_command (char *arg, int from_tty)
{
  /* Make sure the curses mode is enabled.  */
  tui_enable ();

  /* Switch to the selected layout.  */
  if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
    warning ("Invalid layout specified.\n%s", LAYOUT_USAGE);

}

/* Answer the previous layout to cycle to.  */
static enum tui_layout_type
next_layout (void)
{
  enum tui_layout_type new_layout;

  new_layout = tui_current_layout ();
  if (new_layout == UNDEFINED_LAYOUT)
    new_layout = SRC_COMMAND;
  else
    {
      new_layout++;
      if (new_layout == UNDEFINED_LAYOUT)
	new_layout = SRC_COMMAND;
    }

  return new_layout;
}


/* Answer the next layout to cycle to.  */
static enum tui_layout_type
prev_layout (void)
{
  enum tui_layout_type new_layout;

  new_layout = tui_current_layout ();
  if (new_layout == SRC_COMMAND)
    new_layout = DISASSEM_DATA_COMMAND;
  else
    {
      new_layout--;
      if (new_layout == UNDEFINED_LAYOUT)
	new_layout = DISASSEM_DATA_COMMAND;
    }

  return new_layout;
}



static void
make_command_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
{
  init_and_make_win ((void **) win_info_ptr,
		   CMD_WIN,
		   height,
		   tui_term_width (),
		   0,
		   origin_y,
		   DONT_BOX_WINDOW);

  (*win_info_ptr)->can_highlight = FALSE;
}


/*
   ** make_source_window().
 */
static void
make_source_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
{
  make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);

  return;
}				/* make_source_window */


/*
   ** make_disasm_window().
 */
static void
make_disasm_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
{
  make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);

  return;
}				/* make_disasm_window */


static void
make_data_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
{
  init_and_make_win ((void **) win_info_ptr,
		   DATA_WIN,
		   height,
		   tui_term_width (),
		   0,
		   origin_y,
		   BOX_WINDOW);
}



/* Show the Source/Command layout.  */
static void
show_source_command (void)
{
  show_source_or_disasm_and_command (SRC_COMMAND);
}


/* Show the Dissassem/Command layout.  */
static void
show_disasm_command (void)
{
  show_source_or_disasm_and_command (DISASSEM_COMMAND);
}


/* Show the Source/Disassem/Command layout.  */
static void
show_source_disasm_command (void)
{
  if (tui_current_layout () != SRC_DISASSEM_COMMAND)
    {
      int cmd_height, src_height, asm_height;

      if (TUI_CMD_WIN != NULL)
	cmd_height = TUI_CMD_WIN->generic.height;
      else
	cmd_height = tui_term_height () / 3;

      src_height = (tui_term_height () - cmd_height) / 2;
      asm_height = tui_term_height () - (src_height + cmd_height);

      if (TUI_SRC_WIN == NULL)
	make_source_window (&TUI_SRC_WIN, src_height, 0);
      else
	{
	  init_gen_win_info (&TUI_SRC_WIN->generic,
			   TUI_SRC_WIN->generic.type,
			   src_height,
			   TUI_SRC_WIN->generic.width,
			   TUI_SRC_WIN->detail.source_info.execution_info->width,
			   0);
	  TUI_SRC_WIN->can_highlight = TRUE;
	  init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
			   EXEC_INFO_WIN,
			   src_height,
			   3,
			   0,
			   0);
	  tui_make_visible (&TUI_SRC_WIN->generic);
	  tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
	  TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
	}
      if (TUI_SRC_WIN != NULL)
	{
	  struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();

	  tui_show_source_content (TUI_SRC_WIN);
	  if (TUI_DISASM_WIN == NULL)
	    {
	      make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
	      init_and_make_win ((void **) & locator,
			       LOCATOR_WIN,
			       2 /* 1 */ ,
			       tui_term_width (),
			       0,
			       (src_height + asm_height) - 1,
			       DONT_BOX_WINDOW);
	    }
	  else
	    {
	      init_gen_win_info (locator,
			       LOCATOR_WIN,
			       2 /* 1 */ ,
			       tui_term_width (),
			       0,
			       (src_height + asm_height) - 1);
	      TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
	      init_gen_win_info (
				&TUI_DISASM_WIN->generic,
				TUI_DISASM_WIN->generic.type,
				asm_height,
				TUI_DISASM_WIN->generic.width,
			TUI_DISASM_WIN->detail.source_info.execution_info->width,
				src_height - 1);
	      init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
			       EXEC_INFO_WIN,
			       asm_height,
			       3,
			       0,
			       src_height - 1);
	      TUI_DISASM_WIN->can_highlight = TRUE;
	      tui_make_visible (&TUI_DISASM_WIN->generic);
	      tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
	    }
	  if (TUI_DISASM_WIN != NULL)
	    {
	      TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
	      TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
	      tui_make_visible (locator);
	      tui_show_locator_content ();
	      tui_show_source_content (TUI_DISASM_WIN);

	      if (TUI_CMD_WIN == NULL)
		make_command_window (&TUI_CMD_WIN,
				    cmd_height,
				    tui_term_height () - cmd_height);
	      else
		{
		  init_gen_win_info (&TUI_CMD_WIN->generic,
				   TUI_CMD_WIN->generic.type,
				   TUI_CMD_WIN->generic.height,
				   TUI_CMD_WIN->generic.width,
				   0,
				   TUI_CMD_WIN->generic.origin.y);
		  TUI_CMD_WIN->can_highlight = FALSE;
		  tui_make_visible (&TUI_CMD_WIN->generic);
		}
	      if (TUI_CMD_WIN != NULL)
		tui_refresh_win (&TUI_CMD_WIN->generic);
	    }
	}
      tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
    }
}


/* Show the Source/Data/Command or the Dissassembly/Data/Command
   layout.  */
static void
show_data (enum tui_layout_type new_layout)
{
  int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
  int src_height, data_height;
  enum tui_win_type win_type;
  struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();


  data_height = total_height / 2;
  src_height = total_height - data_height;
  tui_make_all_invisible ();
  tui_make_invisible (locator);
  make_data_window (&TUI_DATA_WIN, data_height, 0);
  TUI_DATA_WIN->can_highlight = TRUE;
  if (new_layout == SRC_DATA_COMMAND)
    win_type = SRC_WIN;
  else
    win_type = DISASSEM_WIN;
  if (tui_win_list[win_type] == NULL)
    {
      if (win_type == SRC_WIN)
	make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
      else
	make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
      init_and_make_win ((void **) & locator,
		       LOCATOR_WIN,
		       2 /* 1 */ ,
		       tui_term_width (),
		       0,
		       total_height - 1,
		       DONT_BOX_WINDOW);
    }
  else
    {
      init_gen_win_info (&tui_win_list[win_type]->generic,
		       tui_win_list[win_type]->generic.type,
		       src_height,
		       tui_win_list[win_type]->generic.width,
		   tui_win_list[win_type]->detail.source_info.execution_info->width,
		       data_height - 1);
      init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
		       EXEC_INFO_WIN,
		       src_height,
		       3,
		       0,
		       data_height - 1);
      tui_make_visible (&tui_win_list[win_type]->generic);
      tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
      init_gen_win_info (locator,
		       LOCATOR_WIN,
		       2 /* 1 */ ,
		       tui_term_width (),
		       0,
		       total_height - 1);
    }
  tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
  tui_make_visible (locator);
  tui_show_locator_content ();
  tui_add_to_source_windows (tui_win_list[win_type]);
  tui_set_current_layout_to (new_layout);
}

/*
   ** init_gen_win_info().
 */
static void
init_gen_win_info (struct tui_gen_win_info * win_info, enum tui_win_type type,
                 int height, int width, int origin_x, int origin_y)
{
  int h = height;

  win_info->type = type;
  win_info->width = width;
  win_info->height = h;
  if (h > 1)
    {
      win_info->viewport_height = h - 1;
      if (win_info->type != CMD_WIN)
	win_info->viewport_height--;
    }
  else
    win_info->viewport_height = 1;
  win_info->origin.x = origin_x;
  win_info->origin.y = origin_y;

  return;
}				/* init_gen_win_info */

/*
   ** init_and_make_win().
 */
static void
init_and_make_win (void ** win_info_ptr, enum tui_win_type win_type,
                 int height, int width, int origin_x, int origin_y, int box_it)
{
  void *opaque_win_info = *win_info_ptr;
  struct tui_gen_win_info * generic;

  if (opaque_win_info == NULL)
    {
      if (tui_win_is_auxillary (win_type))
	opaque_win_info = (void *) tui_alloc_generic_win_info ();
      else
	opaque_win_info = (void *) tui_alloc_win_info (win_type);
    }
  if (tui_win_is_auxillary (win_type))
    generic = (struct tui_gen_win_info *) opaque_win_info;
  else
    generic = &((struct tui_win_info *) opaque_win_info)->generic;

  if (opaque_win_info != NULL)
    {
      init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
      if (!tui_win_is_auxillary (win_type))
	{
	  if (generic->type == CMD_WIN)
	    ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
	  else
	    ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
	}
      tui_make_window (generic, box_it);
    }
  *win_info_ptr = opaque_win_info;
}


static void
make_source_or_disasm_window (struct tui_win_info * * win_info_ptr, enum tui_win_type type,
                             int height, int origin_y)
{
  struct tui_gen_win_info * execution_info = (struct tui_gen_win_info *) NULL;

  /*
     ** Create the exeuction info window.
   */
  if (type == SRC_WIN)
    execution_info = tui_source_exec_info_win_ptr ();
  else
    execution_info = tui_disassem_exec_info_win_ptr ();
  init_and_make_win ((void **) & execution_info,
		   EXEC_INFO_WIN,
		   height,
		   3,
		   0,
		   origin_y,
		   DONT_BOX_WINDOW);
  /*
     ** Now create the source window.
   */
  init_and_make_win ((void **) win_info_ptr,
		   type,
		   height,
		   tui_term_width () - execution_info->width,
		   execution_info->width,
		   origin_y,
		   BOX_WINDOW);

  (*win_info_ptr)->detail.source_info.execution_info = execution_info;
}


/* Show the Source/Command or the Disassem layout.   */
static void
show_source_or_disasm_and_command (enum tui_layout_type layout_type)
{
  if (tui_current_layout () != layout_type)
    {
      struct tui_win_info * *win_info_ptr;
      int src_height, cmd_height;
      struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();

      if (TUI_CMD_WIN != NULL)
	cmd_height = TUI_CMD_WIN->generic.height;
      else
	cmd_height = tui_term_height () / 3;
      src_height = tui_term_height () - cmd_height;


      if (layout_type == SRC_COMMAND)
	win_info_ptr = &TUI_SRC_WIN;
      else
	win_info_ptr = &TUI_DISASM_WIN;

      if ((*win_info_ptr) == NULL)
	{
	  if (layout_type == SRC_COMMAND)
	    make_source_window (win_info_ptr, src_height - 1, 0);
	  else
	    make_disasm_window (win_info_ptr, src_height - 1, 0);
	  init_and_make_win ((void **) & locator,
			   LOCATOR_WIN,
			   2 /* 1 */ ,
			   tui_term_width (),
			   0,
			   src_height - 1,
			   DONT_BOX_WINDOW);
	}
      else
	{
	  init_gen_win_info (locator,
			   LOCATOR_WIN,
			   2 /* 1 */ ,
			   tui_term_width (),
			   0,
			   src_height - 1);
	  (*win_info_ptr)->detail.source_info.has_locator = TRUE;
	  init_gen_win_info (
			    &(*win_info_ptr)->generic,
			    (*win_info_ptr)->generic.type,
			    src_height - 1,
			    (*win_info_ptr)->generic.width,
		      (*win_info_ptr)->detail.source_info.execution_info->width,
			    0);
	  init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
			   EXEC_INFO_WIN,
			   src_height - 1,
			   3,
			   0,
			   0);
	  (*win_info_ptr)->can_highlight = TRUE;
	  tui_make_visible (&(*win_info_ptr)->generic);
	  tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
	}
      if ((*win_info_ptr) != NULL)
	{
	  (*win_info_ptr)->detail.source_info.has_locator = TRUE;
	  tui_make_visible (locator);
	  tui_show_locator_content ();
	  tui_show_source_content (*win_info_ptr);

	  if (TUI_CMD_WIN == NULL)
	    {
	      make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
	      tui_refresh_win (&TUI_CMD_WIN->generic);
	    }
	  else
	    {
	      init_gen_win_info (&TUI_CMD_WIN->generic,
			       TUI_CMD_WIN->generic.type,
			       TUI_CMD_WIN->generic.height,
			       TUI_CMD_WIN->generic.width,
			       TUI_CMD_WIN->generic.origin.x,
			       TUI_CMD_WIN->generic.origin.y);
	      TUI_CMD_WIN->can_highlight = FALSE;
	      tui_make_visible (&TUI_CMD_WIN->generic);
	    }
	}
      tui_set_current_layout_to (layout_type);
    }
}