ctk.c

一个小的RTOS具有UIP网络功能

#if CTK_CONF_WINDOWCLOSE
  CTK_BUTTON_NEW(&window->closebutton, window->w - 3, -1, 1, "x");
#else
  CTK_LABEL_NEW(&window->closebutton, window->w - 4, -1, 3, 1, "   ");
#endif /* CTK_CONF_WINDOWCLOSE */  
  CTK_WIDGET_ADD(window, &window->closebutton);
}
/*-----------------------------------------------------------------------------------*/
/**
 * Remove all widgets from a window.
 *
 * \param w The window to be cleared.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_window_clear(struct ctk_window *w)
{
  w->active = w->inactive = w->focused = NULL;
  
  make_windowbuttons(w);
}
/*-----------------------------------------------------------------------------------*/
/**
 * Add a menu to the menu bar.
 *
 * \param menu The menu to be added.
 *
 * \note Do not call this function multiple times for the same menu,
 * as no check is made to see if the menu already is in the menu bar.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_menu_add(struct ctk_menu *menu)
{
#if CTK_CONF_MENUS
  struct ctk_menu *m;

  if(lastmenu == NULL) {
    lastmenu = menu;
  }
    
  for(m = menus.menus; m->next != NULL; m = m->next) {
    if(m == menu) {
      return;
    }
  }
  m->next = menu;
  menu->next = NULL;

  redraw |= REDRAW_MENUPART;
#endif /* CTK_CONF_MENUS */
}
/*-----------------------------------------------------------------------------------*/
/**
 * Remove a menu from the menu bar.
 *
 * \param menu The menu to be removed.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_menu_remove(struct ctk_menu *menu)
{
#if CTK_CONF_MENUS
  struct ctk_menu *m;

  for(m = menus.menus; m->next != NULL; m = m->next) {
    if(m->next == menu) {
      m->next = menu->next;
      if(menu == lastmenu) {
	lastmenu = NULL;
      }
      redraw |= REDRAW_MENUPART;      
      return;
    }
  }
#endif /* CTK_CONF_MENUS */
}
/*-----------------------------------------------------------------------------------*/
/**
 * \internal Redraws everything on the screen within the clip
 * interval.
 *
 * \param clipy1 The upper bound of the clip interval
 * \param clipy2 The lower bound of the clip interval 
 */
/*-----------------------------------------------------------------------------------*/
static void CC_FASTCALL 
do_redraw_all(unsigned char clipy1, unsigned char clipy2)
{
  struct ctk_window *w;
  static struct ctk_widget *widget;

  if(mode != CTK_MODE_NORMAL &&
     mode != CTK_MODE_WINDOWMOVE) {
    return;
  }
  
  ctk_draw_clear(clipy1, clipy2);

  /* Draw widgets in root window */
  for(widget = desktop_window.active;
      widget != NULL; widget = widget->next) {
    ctk_draw_widget(widget, CTK_FOCUS_WINDOW, clipy1, clipy2);
  }
  
  /* Draw windows */
  if(windows != NULL) {
    /* Find the last window.*/
    for(w = windows; w->next != NULL; w = w->next);

    /* Draw the windows from back to front. */
    for(; w != windows; w = w->prev) {
      ctk_draw_clear_window(w, 0, clipy1, clipy2);
      ctk_draw_window(w, 0, clipy1, clipy2);
    }
    /* Draw focused window */
    ctk_draw_clear_window(windows, CTK_FOCUS_WINDOW, clipy1, clipy2);
    ctk_draw_window(windows, CTK_FOCUS_WINDOW, clipy1, clipy2);
  }

  /* Draw dialog (if any) */
  if(dialog != NULL) {
    ctk_draw_dialog(dialog);
  }

#if CTK_CONF_MENUS
  ctk_draw_menus(&menus);
#endif /* CTK_CONF_MENUS */
}
/*-----------------------------------------------------------------------------------*/
/**
 * Redraw the entire desktop.
 *
 * \param d The desktop to be redrawn.
 *
 * \note Currently the parameter d is not used, but must be set to
 * NULL.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_desktop_redraw(struct ctk_desktop *d)
{
  if(DISPATCHER_CURRENT() == ctkid) {
    if(mode == CTK_MODE_NORMAL ||
       mode == CTK_MODE_WINDOWMOVE) {
      do_redraw_all(1, height);
    }
  } else {
    redraw |= REDRAW_ALL;
  }
}
/*-----------------------------------------------------------------------------------*/
/**
 * Redraw a window.
 *
 * This function redraws the window, but only if it is the foremost
 * one on the desktop.
 *
 * \param w The window to be redrawn.
 */
/*-----------------------------------------------------------------------------------*/
void 
ctk_window_redraw(struct ctk_window *w)
{
  /* Only redraw the window if it is a dialog or if it is the foremost
     window. */
  if(mode != CTK_MODE_NORMAL) {
    return;
  }
  
  if(w == dialog) {
    ctk_draw_dialog(w);
  } else if(dialog == NULL &&
#if CTK_CONF_MENUS
	    menus.open == NULL &&
#endif /* CTK_CONF_MENUS */		    
	    windows == w) {
    ctk_draw_window(w, CTK_FOCUS_WINDOW,
		    0, height);
  }  
}
/*-----------------------------------------------------------------------------------*/
/**
 * \internal Creates a new window.
 *
 * \param window The window to be created.
 * \param w The width of the window.
 * \param h The height of the window.
 * \param title The title of the window.
 */
/*-----------------------------------------------------------------------------------*/
static void 
window_new(CC_REGISTER_ARG struct ctk_window *window,
	   unsigned char w, unsigned char h,
	   char *title)
{
  
  if(w >= width - 2) {
    window->x = 0;
  } else {
    window->x = (width - w - 2) / 2;
  }
  if(h >= height - 3) {
    window->y = 0;
  } else {
    window->y = (height - h - 1) / 2;
  }

  window->w = w;
  window->h = h;
  window->title = title;
  if(title != NULL) {
    window->titlelen = strlen(title);
  } else {
    window->titlelen = 0;
  }
  window->next = window->prev = NULL;
  window->owner = DISPATCHER_CURRENT();
  window->active = window->inactive = window->focused = NULL;
}
/*-----------------------------------------------------------------------------------*/
/**
 * Create a new window.
 *
 * Creates a new window. The memory for the window structure must
 * already be allocated by the caller, and is usually done with a
 * static declaration.
 *
 * This function sets up the internal structure of the ctk_window
 * struct and creates the move and close buttons, but it does not open
 * the window. The window must be explicitly opened by calling the
 * ctk_window_open() function.
 *
 * \param window The window to be created.
 * \param w The width of the new window.
 * \param h The height of the new window.
 * \param title The title of the new window.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_window_new(struct ctk_window *window,
	       unsigned char w, unsigned char h,
	       char *title)
{
  window_new(window, w, h, title);

  make_windowbuttons(window);  
}
/*-----------------------------------------------------------------------------------*/
/**
 * Creates a new dialog.
 *
 * This function only sets up the internal structure of the ctk_window
 * struct but does not open the dialog. The dialog must be explicitly
 * opened by calling the ctk_dialog_open() function.
 *
 * \param dialog The dialog to be created.
 * \param w The width of the dialog.
 * \param h The height of the dialog.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_dialog_new(CC_REGISTER_ARG struct ctk_window *dialog,
	       unsigned char w, unsigned char h)
{
  window_new(dialog, w, h, NULL);
}
/*-----------------------------------------------------------------------------------*/
/**
 * Creates a new menu.
 *
 * This function sets up the internal structure of the menu, but does
 * not add it to the menubar. Use the function ctk_menu_add() for that
 * purpose.
 *
 * \param menu The menu to be created.
 * \param title The title of the menu.
 */
/*-----------------------------------------------------------------------------------*/
void 
ctk_menu_new(CC_REGISTER_ARG struct ctk_menu *menu,
	     char *title)
{
#if CTK_CONF_MENUS
  menu->next = NULL;
  menu->title = title;
  menu->titlelen = strlen(title);
  menu->active = 0;
  menu->nitems = 0;
#endif /* CTK_CONF_MENUS */
}
/*-----------------------------------------------------------------------------------*/
/**
 * Adds a menu item to a menu.
 *
 * In CTK, each menu item is identified by a number which is unique
 * within each menu. When a menu item is selected, a
 * ctk_menuitem_activated signal is emitted and the menu item number
 * is passed as signal data with the signal.
 *
 * \param menu The menu to which the menu item should be added.
 * \param name The name of the menu item.
 * \return The number of the menu item.
 */
/*-----------------------------------------------------------------------------------*/
unsigned char
ctk_menuitem_add(CC_REGISTER_ARG struct ctk_menu *menu,
		 char *name)
{
#if CTK_CONF_MENUS
  if(menu->nitems == CTK_CONF_MAXMENUITEMS) {
    return 0;
  }
  menu->items[menu->nitems].title = name;
  menu->items[menu->nitems].titlelen = strlen(name); 
  return menu->nitems++;
#else
  return 0;
#endif /* CTK_CONF_MENUS */
}
/*-----------------------------------------------------------------------------------*/
/**
 * \internal Adds a widget to the list of widgets that should be
 * redrawn.
 *
 * \param w The widget that should be redrawn.
 */
/*-----------------------------------------------------------------------------------*/
static void CC_FASTCALL 
add_redrawwidget(struct ctk_widget *w)
{
  static unsigned char i;
  
  if(redraw_widgetptr == MAX_REDRAWWIDGETS) {
    redraw |= REDRAW_FOCUS;
  } else {
    redraw |= REDRAW_WIDGETS;
    /* Check if it is in the queue already. If so, we don't add it
       again. */
    for(i = 0; i < redraw_widgetptr; ++i) {
      if(redraw_widgets[i] == w) {
	return;
      }
    }
    redraw_widgets[redraw_widgetptr++] = w;
  }
}
/*-----------------------------------------------------------------------------------*/
/**
 * \internal Checks if a widget redrawn and adds it to the list of
 * widgets to be redrawn.
 *
 * A widget can be redrawn only if the current CTK mode is
 * CTK_MODE_NORMAL, if no menu is open, and the widget is in the
 * foremost window.
 *
 * \param widget The widget that should be redrawn.
 */
/*-----------------------------------------------------------------------------------*/
static void
widget_redraw(struct ctk_widget *widget)
{
  struct ctk_window *window;

  if(mode != CTK_MODE_NORMAL || widget == NULL) {
    return;
  }

  /* Only redraw widgets that are in the foremost window. If we would
     allow redrawing widgets in non-focused windows, we would have to
     redraw all the windows that cover the non-focused window as well,
     which would lead to flickering.

     Also, we avoid drawing any widgets when the menus are active.
    */
    
#if CTK_CONF_MENUS
  if(menus.open == NULL)
#endif /* CTK_CONF_MENUS */
    {
      window = widget->window;
      if(window == dialog) {
	ctk_draw_widget(widget, CTK_FOCUS_DIALOG, 0, height);
      } else if(dialog == NULL &&
		(window == windows ||
		 window == &desktop_window)) {
	ctk_draw_widget(widget, CTK_FOCUS_WINDOW, 0, height);
      }
    }
}
/*-----------------------------------------------------------------------------------*/
/**
 * Redraws a widget.
 *
 * This function will set a flag which causes the widget to be redrawn
 * next time the CTK process is scheduled.
 *
 * \param widget The widget that is to be redrawn.
 *
 * \note This function should usually not be called directly since it
 * requires typecasting of the widget parameter. The wrapper macro
 * CTK_WIDGET_REDRAW() does the required typecast and should be used
 * instead.
 */
/*-----------------------------------------------------------------------------------*/
void 
ctk_widget_redraw(struct ctk_widget *widget)
{
  struct ctk_window *window;

  if(mode != CTK_MODE_NORMAL || widget == NULL) {
    return;
  }

  /* Since this function isn't called by CTK itself, we only queue the
     redraw request. */
  add_redrawwidget(widget);
}
/*-----------------------------------------------------------------------------------*/
/**
 * Adds a widget to a window.
 *
 * This function adds a widget to a window. The order of which the
 * widgets are added is important, as it sets the order to which
 * widgets are cycled with the widget selection keys.
 *
 * \param window The window to which the widhet should be added.
 * \param widget The widget to be added.
 */
/*-----------------------------------------------------------------------------------*/
void CC_FASTCALL
ctk_widget_add(CC_REGISTER_ARG struct ctk_window *window,
	       CC_REGISTER_ARG struct ctk_widget *widget)
{  
  if(widget->type == CTK_WIDGET_LABEL ||
     widget->type == CTK_WIDGET_SEPARATOR) {
    widget->next = window->inactive;
    window->inactive = widget;
    widget->window = window;
  } else {
    widget->next = window->active;
    window->active = widget;
    widget->window = window;
    /*    if(window->focused == NULL) {
      window->focused = widget;