ctk.c

一个小的RTOS具有UIP网络功能

      }*/
  }
}
/*-----------------------------------------------------------------------------------*/
/**
 * Gets the width of the desktop.
 *
 * \param d The desktop.
 * \return The width of the desktop, in characters.
 *
 * \note The d parameter is currently unused and must be set to NULL.
 */
/*-----------------------------------------------------------------------------------*/
unsigned char
ctk_desktop_width(struct ctk_desktop *d)
{
  return ctk_draw_width();
}
/*-----------------------------------------------------------------------------------*/
/**
 * Gets the height of the desktop.
 *
 * \param d The desktop.
 * \return The height of the desktop, in characters.
 *
 * \note The d parameter is currently unused and must be set to NULL.
 */
/*-----------------------------------------------------------------------------------*/
unsigned char
ctk_desktop_height(struct ctk_desktop *d)
{
  return ctk_draw_height();
}
/*-----------------------------------------------------------------------------------*/
/**
 * \internal Selects a widget in the window of the widget.
 *
 * \param focus The widget to be focused.
 */
/*-----------------------------------------------------------------------------------*/
static void CC_FASTCALL 
select_widget(struct ctk_widget *focus)
{
  struct ctk_window *window;

  window = focus->window;
  
  if(focus != window->focused) {
    window->focused = focus;
    /* The operation changed the focus, so we emit a "hover" signal
       for those widgets that support it. */
    
    if(window->focused->type == CTK_WIDGET_HYPERLINK) {    
      dispatcher_emit(ctk_signal_hyperlink_hover, window->focused,
		      window->owner);
    } else if(window->focused->type == CTK_WIDGET_BUTTON) {    
      dispatcher_emit(ctk_signal_button_hover, window->focused,
		      window->owner);      
    } 
    
    add_redrawwidget(window->focused);

    dispatcher_emit(ctk_signal_widget_select, focus,
		    focus->window->owner);

  }

}
/*-----------------------------------------------------------------------------------*/
#define UP 0
#define DOWN 1
#define LEFT 2
#define RIGHT 3
static void CC_FASTCALL 
switch_focus_widget(unsigned char direction)
{
  register struct ctk_window *window;
  register struct ctk_widget *focus;
  struct ctk_widget *widget;
  
  
  if(dialog != NULL) {
    window = dialog;
  } else {
    window = windows;
  }

  /* If there are no windows open, we move focus around between the
     icons on the root window instead. */
  if(window == NULL) {
    window = &desktop_window;
  }
 
  focus = window->focused;
  if(focus == NULL) {
    focus = window->active;
  }
  add_redrawwidget(focus);
  
  if((direction & 1) == 0) {
    /* Move focus "up" */
    focus = focus->next;
  } else {
    /* Move focus "down" */
    for(widget = window->active;
	widget != NULL; widget = widget->next) {
	if(widget->next == focus) {
	  break;
	}      
    }    
    focus = widget;
    if(focus == NULL) {
      if(window->active != NULL) {	
	for(focus = window->active;
	    focus->next != NULL; focus = focus->next);
      }
    }
  }
  if(focus == NULL) {
    focus = window->active;
  }

  select_widget(focus);
}
/*-----------------------------------------------------------------------------------*/
#if CTK_CONF_MENUS
static void 
switch_open_menu(unsigned char rightleft)
{
  struct ctk_menu *menu;
  
  if(rightleft == 0) {
    /* Move right */
    for(menu = menus.menus; menu != NULL; menu = menu->next) {
      if(menu->next == menus.open) {
	break;
      }
    }
    lastmenu = menus.open;
    menus.open = menu;
    if(menus.open == NULL) {
      for(menu = menus.menus;
	  menu->next != NULL; menu = menu->next);
      menus.open = menu;
    }
  } else {
    /* Move to left */
    lastmenu = menus.open;
    menus.open = menus.open->next;
    if(menus.open == NULL) {
      menus.open = menus.menus;
    }
  }

  menus.open->active = 0;

  /*  if(menus.open->nitems > maxnitems) {
    maxnitems = menus.open->nitems;
    }*/

  /*  ctk_desktop_redraw();*/
}
/*-----------------------------------------------------------------------------------*/
static void 
switch_menu_item(unsigned char updown)
{
  register struct ctk_menu *m;

  m = menus.open;
  
  if(updown == 0) {
    /* Move up */
    if(m->active == 0) {
      m->active = m->nitems - 1;
    } else {
      --m->active;
      if(m->items[m->active].title[0] == '-') {
	--m->active;
      }
    }
  } else {
    /* Move down */
    if(m->active >= m->nitems - 1) {
      m->active = 0;
    } else {      
      ++m->active;
      if(m->items[m->active].title[0] == '-') {
	++m->active;
      }
    }
  }
  
}
#endif /* CTK_CONF_MENUS */
/*-----------------------------------------------------------------------------------*/
static unsigned char CC_FASTCALL 
activate(CC_REGISTER_ARG struct ctk_widget *w)
{
  static unsigned char len;
  
  if(w->type == CTK_WIDGET_BUTTON) {
    if(w == (struct ctk_widget *)&windows->closebutton) {
#if CTK_CONF_WINDOWCLOSE
      dispatcher_emit(ctk_signal_window_close, windows, w->window->owner);
      ctk_window_close(windows);
      return REDRAW_ALL;
#endif /* CTK_CONF_WINDOWCLOSE */
    } else if(w == (struct ctk_widget *)&windows->titlebutton) {
#if CTK_CONF_WINDOWCLOSE
      mode = CTK_MODE_WINDOWMOVE;
#endif /* CTK_CONF_WINDOWCLOSE */
    } else {
      dispatcher_emit(ctk_signal_widget_activate, w,
		      w->window->owner);
    }
#if CTK_CONF_ICONS
  } else if(w->type == CTK_WIDGET_ICON) {
    dispatcher_emit(ctk_signal_widget_activate, w,
		    w->widget.icon.owner);
#endif /* CTK_CONF_ICONS */
  } else if(w->type == CTK_WIDGET_HYPERLINK) {    
    dispatcher_emit(ctk_signal_hyperlink_activate, w,
		    DISPATCHER_BROADCAST);
  } else if(w->type == CTK_WIDGET_TEXTENTRY) {
    if(w->widget.textentry.state == CTK_TEXTENTRY_NORMAL) {      
      w->widget.textentry.state = CTK_TEXTENTRY_EDIT;
      len = strlen(w->widget.textentry.text);
      if(w->widget.textentry.xpos > len) {
	w->widget.textentry.xpos = len;
      }
    } else if(w->widget.textentry.state == CTK_TEXTENTRY_EDIT) {
      w->widget.textentry.state = CTK_TEXTENTRY_NORMAL;
      dispatcher_emit(ctk_signal_widget_activate, w,
		      w->window->owner);      
    }
    add_redrawwidget(w);
    return REDRAW_WIDGETS;
  } else {
    dispatcher_emit(ctk_signal_widget_activate, w,
		    w->window->owner);
  }
  return REDRAW_NONE;
}
/*-----------------------------------------------------------------------------------*/
static void CC_FASTCALL 
textentry_input(ctk_arch_key_t c,
		CC_REGISTER_ARG struct ctk_textentry *t)
{
  register char *cptr, *cptr2;
  static unsigned char len, txpos, typos, tlen;

  txpos = t->xpos;
  typos = t->ypos;
  tlen = t->len;

  cptr = &t->text[txpos + typos * tlen];
      
  switch(c) {
  case CH_CURS_LEFT:
    if(txpos > 0) {
      --txpos;
    }
    break;
    
  case CH_CURS_RIGHT:    
    if(txpos < tlen &&
       *cptr != 0) {
      ++txpos;
    }
    break;

  case CH_CURS_UP:
    txpos = 0;
    break;
    
  case CH_CURS_DOWN:
    txpos = strlen(t->text);
    break;
    
  case CH_ENTER:
    /*    t->state = CTK_TEXTENTRY_NORMAL;*/
    activate((struct ctk_widget *)t);
    switch_focus_widget(DOWN);
    break;
    
  case CTK_CONF_WIDGETDOWN_KEY:
    t->state = CTK_TEXTENTRY_NORMAL;
    switch_focus_widget(DOWN);
    break;
  case CTK_CONF_WIDGETUP_KEY:
    t->state = CTK_TEXTENTRY_NORMAL;
    switch_focus_widget(UP);
    break;
    
  default:
    len = tlen - txpos - 1;
    if(c == CH_DEL) {
      if(txpos > 0 && len > 0) {
	strncpy(cptr - 1, cptr, len);
	*(cptr + len - 1) = 0;
	--txpos;
      }
    } else {
      if(len > 0) {
	cptr2 = cptr + len - 1;
	while(cptr2 + 1 > cptr) {
	  *(cptr2 + 1) = *cptr2;
	  --cptr2;
	}
	
	*cptr = c;
	++txpos;
      }
    }
    break;
  }

  t->xpos = txpos;
  t->ypos = typos;
}
/*-----------------------------------------------------------------------------------*/
#if CTK_CONF_MENUS
static unsigned char 
activate_menu(void)
{
  struct ctk_window *w;
  
  lastmenu = menus.open;
  if(menus.open == &desktopmenu) {
    for(w = windows; w != NULL; w = w->next) {
      if(w->title == desktopmenu.items[desktopmenu.active].title) {
	ctk_window_open(w);
	menus.open = NULL;
	return REDRAW_ALL;
      }
    }
  } else {
    dispatcher_emit(ctk_signal_menu_activate, menus.open,
		    DISPATCHER_BROADCAST);
  }
  menus.open = NULL;
  return REDRAW_MENUPART;
}
/*-----------------------------------------------------------------------------------*/
static unsigned char 
menus_input(ctk_arch_key_t c)
{

  if(menus.open->nitems > maxnitems) {
    maxnitems = menus.open->nitems;
  }

  
  switch(c) {
  case CH_CURS_RIGHT:
    switch_open_menu(1);
	
    return REDRAW_MENUPART;

  case CH_CURS_DOWN:
    switch_menu_item(1);
    return REDRAW_MENUS;

  case CH_CURS_LEFT:
    switch_open_menu(0);
    return REDRAW_MENUPART;

  case CH_CURS_UP:
    switch_menu_item(0);
    return REDRAW_MENUS;
    
  case CH_ENTER:
    return activate_menu();

  case CTK_CONF_MENU_KEY:
    lastmenu = menus.open;
    menus.open = NULL;
    return REDRAW_MENUPART;
  }

  return REDRAW_NONE;
}
#endif /* CTK_CONF_MENUS */
/*-----------------------------------------------------------------------------------*/
static void
timer(void)
{
  if(mode == CTK_MODE_NORMAL) {
    ++screensaver_timer;
    if(screensaver_timer >= ctk_screensaver_timeout) {
#if CTK_CONF_SCREENSAVER
      dispatcher_emit(ctk_signal_screensaver_start, NULL,
		      DISPATCHER_BROADCAST);
#ifdef CTK_SCREENSAVER_INIT
      CTK_SCREENSAVER_INIT();
#endif /* CTK_SCREENSAVER_INIT */

#endif /* CTK_CONF_SCREENSAVER */
      screensaver_timer = 0;
    }
  }  
}
/*-----------------------------------------------------------------------------------*/
static void
unfocus_widget(CC_REGISTER_ARG struct ctk_widget *w)
{
  if(w != NULL) {
    redraw |= REDRAW_WIDGETS;
    add_redrawwidget(w);
    if(CTK_WIDGET_TYPE(w) == CTK_WIDGET_TEXTENTRY) {
      ((struct ctk_textentry *)w)->state =
	CTK_TEXTENTRY_NORMAL;
    }
    w->window->focused = NULL;
  }
}
/*-----------------------------------------------------------------------------------*/
static void
ctk_idle(void)     
{
  static ctk_arch_key_t c;
  static unsigned char i;
  register struct ctk_window *window;
  register struct ctk_widget *widget;
  register struct ctk_widget **widgetptr;
#if CTK_CONF_MOUSE_SUPPORT 
  static unsigned char mxc, myc, mouse_button_changed, mouse_moved,
    mouse_clicked;
  static unsigned char menux;
  register struct ctk_menu *menu;

#endif /* CTK_CONF_MOUSE_SUPPORT */


  current = ek_clock();
  
  if((current - start) >= CLK_TCK) {
    timer();
    start = current;
  }    

#if CTK_CONF_MENUS
  if(menus.open != NULL) {
    maxnitems = menus.open->nitems;
  } else {
    maxnitems = 0;
  }