ctk.c

一个小的RTOS具有UIP网络功能

/**
 * \file
 * The Contiki Toolkit CTK, the Contiki GUI.
 * \author Adam Dunkels <[e-mail]>
 *
 * The Contiki Toolkit (CTK) provides the graphical user interface for
 * the Contiki system.
 *
 *
 *
 * 
 */

/*
 * Copyright (c) 2002-2003, Adam Dunkels.
 * All rights reserved. 
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution. 
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.  
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
 *
 * This file is part of the "ctk" console GUI toolkit for cc65
 *
 * $Id: ctk.c,v 1.33 2003/09/04 19:36:04 adamdunkels Exp $
 *
 */

#include "cc.h"
#include "ek.h"
#include "dispatcher.h"
#include "ctk.h"
#include "ctk-draw.h"
#include "ctk-conf.h"
#include "ctk-mouse.h"

#include <string.h>

static unsigned char height, width;

static unsigned char mode;

static struct ctk_window desktop_window;
static struct ctk_window *windows;
static struct ctk_window *dialog;

#if CTK_CONF_MENUS
static struct ctk_menus menus;
static struct ctk_menu *lastmenu;
static struct ctk_menu desktopmenu;
#endif /* CTK_CONF_MENUS */

#ifndef NULL
#define NULL (void *)0
#endif /* NULL */

#define REDRAW_NONE         0
#define REDRAW_ALL          1
#define REDRAW_FOCUS        2
#define REDRAW_WIDGETS      4
#define REDRAW_MENUS        8
#define REDRAW_MENUPART     16

#define MAX_REDRAWWIDGETS 4
static unsigned char redraw;
static struct ctk_widget *redraw_widgets[MAX_REDRAWWIDGETS];
static unsigned char redraw_widgetptr;
static unsigned char maxnitems;

static unsigned char iconx, icony;
#define ICONX_START  (width - 6)
#define ICONY_START  0
#define ICONX_DELTA  -16
#define ICONY_DELTA  5
#define ICONY_MAX    (height - 5)

static void ctk_idle(void);
static struct dispatcher_proc p =
  {DISPATCHER_PROC("CTK Contiki GUI", ctk_idle, NULL, NULL)};
static ek_id_t ctkid;

ek_signal_t

  /** Emitted for every key being pressed. The key is passed as signal
      data.*/
  ctk_signal_keypress,
  
  /** Emitted when a widget is activated (pressed). A pointer to the
      widget is passed as signal data. */
  ctk_signal_widget_activate,
  
  /** \deprecated Same as ctk_signal_widget_activate. */
  ctk_signal_button_activate,

  /** Emitted when a widget is selected. A pointer to the widget is
      passed as signal data. */
  ctk_signal_widget_select,
  
  /** \deprecated Same as ctk_signal_widget_select. */  
  ctk_signal_button_hover,

  /** Emitted when a hyperlink is activated. The signal is broadcast
      to all listeners. */
  ctk_signal_hyperlink_activate,

  /** \deprecated Same as ctk_signal_widget_select.. */  
  ctk_signal_hyperlink_hover,

  /** Emitted when a menu item is activated. The number of the menu
      item is passed as signal data. */
  ctk_signal_menu_activate,

  /** Emitted when a window is closed. A pointer to the window is
      passed as signal data. */
  ctk_signal_window_close,

  /** Emitted when the mouse pointer is moved. A NULL pointer is
      passed as signal data and it is up to the listening process to
      check the position of the mouse using the CTK mouse API.*/
  ctk_signal_pointer_move,

  /** Emitted when a mouse button is pressed. The button is passed as
      signal data to the listening process. */
  ctk_signal_pointer_button;

#if CTK_CONF_SCREENSAVER
ek_signal_t ctk_signal_screensaver_stop,
  ctk_signal_screensaver_start;
#endif /* CTK_CONF_SCREENSAVER */


#if CTK_CONF_MOUSE_SUPPORT
unsigned short mouse_x, mouse_y, mouse_button;
#endif /* CTK_CONF_MOUSE_SUPPORT */

static unsigned short screensaver_timer = 0;
unsigned short ctk_screensaver_timeout = (5*60);
static ek_clock_t start, current;

#if CTK_CONF_MENUS
/*-----------------------------------------------------------------------------------*/
/**
 * \internal Creates the Desktop menu.
 *
 * Creates the leftmost menu, "Desktop". Since the desktop menu
 * contains the list of all open windows, this function will be called
 * whenever a window is opened or closed.
 */
/*-----------------------------------------------------------------------------------*/
static void
make_desktopmenu(void)
{
  struct ctk_window *w;
  
  desktopmenu.nitems = 0;
  
  if(windows == NULL) {
    ctk_menuitem_add(&desktopmenu, "(No windows)");
  } else {
    for(w = windows; w != NULL; w = w->next) {
      ctk_menuitem_add(&desktopmenu, w->title);
    }
  }
}
#endif /* CTK_CONF_MENUS */
/*-----------------------------------------------------------------------------------*/
/**
 * Initializes the Contiki Toolkit.
 *
 * This function must be called before any other CTK function, but
 * after the inizialitation of the dispatcher module.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_init(void)
{
  ctkid = dispatcher_start(&p);
  
  windows = NULL;
  dialog = NULL;

#if CTK_CONF_MENUS 
  ctk_menu_new(&desktopmenu, "Desktop");
  make_desktopmenu();
  menus.menus = menus.desktopmenu = &desktopmenu;
#endif /* CTK_CONF_MENUS */

#if CTK_CONF_MOUSE_SUPPORT
  ctk_mouse_init();
  ctk_mouse_show();
#endif /* CTK_CONF_MOUSE_SUPPORT */
  
  ctk_draw_init();

  height = ctk_draw_height();
  width = ctk_draw_width();
  
  desktop_window.active = NULL;
  
  ctk_signal_keypress = dispatcher_sigalloc();
  
  ctk_signal_button_activate =
    ctk_signal_widget_activate = dispatcher_sigalloc();
  
  ctk_signal_button_hover =
    ctk_signal_hyperlink_hover =
    ctk_signal_widget_select = dispatcher_sigalloc();
  
  ctk_signal_hyperlink_activate = dispatcher_sigalloc();

  ctk_signal_menu_activate = dispatcher_sigalloc();
  ctk_signal_window_close = dispatcher_sigalloc();

  ctk_signal_pointer_move = dispatcher_sigalloc();
  ctk_signal_pointer_button = dispatcher_sigalloc();


#if CTK_CONF_SCREENSAVER
  ctk_signal_screensaver_start = dispatcher_sigalloc();
  ctk_signal_screensaver_stop = dispatcher_sigalloc();
#endif /* CTK_CONF_SCREENSAVER */
    

  mode = CTK_MODE_NORMAL;

  iconx = ICONX_START;
  icony = ICONY_START;

  redraw = REDRAW_ALL;

  start = ek_clock();
}
/*-----------------------------------------------------------------------------------*/
/**
 * Sets the current CTK mode.
 *
 * The CTK mode can be either CTK_MODE_NORMAL, CTK_MODE_SCREENSAVER or
 * CTK_MODE_EXTERNAL. CTK_MODE_NORMAL is the normal mode, in which
 * keypresses and mouse pointer movements are processed and the screen
 * is redrawn. In CTK_MODE_SCREENSAVER, no screen redraws are
 * performed and the first key press or pointer movement will cause
 * the ctk_signal_screensaver_stop to be emitted. In the
 * CTK_MODE_EXTERNAL mode, key presses and pointer movements are
 * ignored and no screen redraws are made.
 *
 * \param m The mode. 
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_mode_set(unsigned char m) {
  mode = m;
}
/*-----------------------------------------------------------------------------------*/
/**
 * Retrieves the current CTK mode.
 *
 * \return The current CTK mode.
 */
/*-----------------------------------------------------------------------------------*/
unsigned char
ctk_mode_get(void) {
  return mode;
}
/*-----------------------------------------------------------------------------------*/
/**
 * Add an icon to the desktop.
 *
 * \param icon The icon to be added.
 *
 * \param id The process ID of the process that owns the icon.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_icon_add(CC_REGISTER_ARG struct ctk_widget *icon, ek_id_t id)
{
#if CTK_CONF_ICONS 
  icon->x = iconx;
  icon->y = icony;
  icon->widget.icon.owner = id;

  icony += ICONY_DELTA;
  if(icony >= ICONY_MAX) {
    icony = ICONY_START;
    iconx += ICONX_DELTA;
  }
  
  ctk_widget_add(&desktop_window, icon);
#endif /* CTK_CONF_ICONS */
}
/*-----------------------------------------------------------------------------------*/
/**
 * Open a dialog box.
 *
 * \param d The dialog to be opened.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_dialog_open(struct ctk_window *d)
{
  dialog = d;
  redraw |= REDRAW_FOCUS;
} 
/*-----------------------------------------------------------------------------------*/
/**
 * Close the dialog box, if one is open.
 *
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_dialog_close(void)
{
  dialog = NULL;
  redraw |= REDRAW_ALL;
}
/*-----------------------------------------------------------------------------------*/
/**
 * Open a window, or bring window to front if already open.
 *
 * \param w The window to be opened.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_window_open(CC_REGISTER_ARG struct ctk_window *w)
{
  struct ctk_window *w2;
  
  /* Check if already open. */
  for(w2 = windows; w2 != w && w2 != NULL; w2 = w2->next);
  if(w2 == NULL) {
   /* Not open, so we add it at the head of the list of open
       windows. */
    w->next = windows;
    if(windows != NULL) {
      windows->prev = w;
    }
    windows = w;
    w->prev = NULL;
  } else {
    /* Window already open, so we move it to the front of the windows
       list. */
    if(w != windows) {
      if(w->next != NULL) {
	w->next->prev = w->prev;
      }
      if(w->prev != NULL) {
	w->prev->next = w->next;
      }
      w->next = windows;
      windows->prev = w;
      windows = w;
      w->prev = NULL;
    }
  }
  
#if CTK_CONF_MENUS
  /* Recreate the Desktop menu's window entries.*/
  make_desktopmenu();
#endif /* CTK_CONF_MENUS */

  redraw |= REDRAW_ALL;
}
/*-----------------------------------------------------------------------------------*/
/**
 * Close a window if it is open.
 *
 * If the window is not open, this function does nothing.
 *
 * \param w The window to be closed.
 */
/*-----------------------------------------------------------------------------------*/
void
ctk_window_close(struct ctk_window *w)
{
  static struct ctk_window *w2;

  if(w == NULL) {
    return;
  }
  
  /* Check if the window to be closed is the first window on the
     list. */
  if(w == windows) {
    windows = w->next;
    if(windows != NULL) {
      windows->prev = NULL;
    }
    w->next = w->prev = NULL;
  } else {
    /* Otherwise we step through the list until we find the window
       before the one to be closed. We then redirect its ->next
       pointer and its ->next->prev. */
    for(w2 = windows; w2 != NULL && w2->next != w; w2 = w2->next);

    if(w2 == NULL) {
      /* The window wasn't open, so there is nothing more for us to
	 do. */
      return;
    }

    if(w->next != NULL) {
      w->next->prev = w->prev;
    }
    w2->next = w->next;
    
    w->next = w->prev = NULL;
  }
  
#if CTK_CONF_MENUS
  /* Recreate the Desktop menu's window entries.*/
  make_desktopmenu();
#endif /* CTK_CONF_MENUS */
  redraw |= REDRAW_ALL;
}
/*-----------------------------------------------------------------------------------*/
/**
 * \internal Create the move and close buttons on the window titlebar.
 */
/*-----------------------------------------------------------------------------------*/
static void 
make_windowbuttons(CC_REGISTER_ARG struct ctk_window *window)
{
#if CTK_CONF_WINDOWMOVE
  CTK_BUTTON_NEW(&window->titlebutton, 0, -1, window->titlelen, window->title);
#else
  CTK_LABEL_NEW(&window->titlebutton, 0, -1, window->titlelen, 1, window->title);
#endif /* CTK_CONF_WINDOWMOVE */
  CTK_WIDGET_ADD(window, &window->titlebutton);