gdkim.c

gtk是linux一款强大的夸平台的图形化开发工具

	  newattr |= GDK_IC_PREEDIT_AREA_NEEDED;
	}
    }

  if (mask & GDK_IC_PREEDIT_FOREGROUND)
    {
      pattr->preedit_foreground = attr->preedit_foreground;
      newattr |= GDK_IC_PREEDIT_FOREGROUND;
    }

  if (mask & GDK_IC_PREEDIT_BACKGROUND)
    {
      pattr->preedit_background = attr->preedit_background;
      newattr |= GDK_IC_PREEDIT_BACKGROUND;
    }

  if (mask & GDK_IC_PREEDIT_PIXMAP)
    {
      if (attr->preedit_pixmap != NULL &&
	  ((GdkPixmapPrivate *)attr->preedit_pixmap)->destroyed)
	{
	  g_warning ("Preedit pixmap is already destroyed.\n");
	  error |= GDK_IC_PREEDIT_PIXMAP;
	}
      else
	{
	  if (pattr->preedit_pixmap != attr->preedit_pixmap)
	    {
	      if (pattr->preedit_pixmap != NULL)
		gdk_pixmap_unref (pattr->preedit_pixmap);
	      if (attr->preedit_pixmap)
		gdk_pixmap_ref (attr->preedit_pixmap);
	      pattr->preedit_pixmap = attr->preedit_pixmap;
	      newattr |= GDK_IC_PREEDIT_PIXMAP;
	    }
	}
    }

  if (mask & GDK_IC_PREEDIT_COLORMAP)
    {
      if (pattr->preedit_colormap != attr->preedit_colormap)
	{
	  if (pattr->preedit_colormap != NULL)
	    gdk_colormap_unref (pattr->preedit_colormap);
	  if (attr->preedit_colormap != NULL)
	    gdk_colormap_ref (attr->preedit_colormap);
	  pattr->preedit_colormap = attr->preedit_colormap;
	  newattr |= GDK_IC_PREEDIT_COLORMAP;
	}
    }

  if (mask & GDK_IC_STATUS_FONTSET)
    {
      if (attr->status_fontset == NULL ||
	  attr->status_fontset->type != GDK_FONT_FONTSET)
	{
	  g_warning ("gdk_font is NULL or not a fontset.\n");
	  error |= GDK_IC_STATUS_FONTSET;
	}
      else if (pattr->status_fontset != attr->status_fontset)
	{
	  if (pattr->status_fontset != NULL)
	    gdk_font_unref (pattr->status_fontset);
	  if (attr->status_fontset != NULL)
	    gdk_font_ref (attr->status_fontset);
	  pattr->status_fontset = attr->status_fontset;
	  newattr |= GDK_IC_STATUS_FONTSET;
	}
    }

  if (mask & GDK_IC_STATUS_AREA)
    {
      pattr->status_area = attr->status_area;
      newattr |= GDK_IC_STATUS_AREA;
    }

  if (mask & GDK_IC_STATUS_AREA_NEEDED)
    {
      if (attr->status_area_needed.width == 0 ||
	  attr->status_area_needed.height == 0)
	{
	  g_warning ("width and height of status_area_needed must be non 0.\n");
	  error |= GDK_IC_STATUS_AREA_NEEDED;
	}
      else
	{
	  pattr->status_area_needed = attr->status_area_needed;
	  newattr |= GDK_IC_STATUS_AREA_NEEDED;
	}
    }

  if (mask & GDK_IC_STATUS_FOREGROUND)
    {
      pattr->status_foreground = attr->status_foreground;
      newattr |= GDK_IC_STATUS_FOREGROUND;
    }

  if (mask & GDK_IC_STATUS_BACKGROUND)
    {
      pattr->status_background = attr->status_background;
      newattr |= GDK_IC_STATUS_BACKGROUND;
    }

  if (mask & GDK_IC_STATUS_PIXMAP)
    {
      if (attr->status_pixmap != NULL &&
	  ((GdkPixmapPrivate *)attr->status_pixmap)->destroyed)
	{
	  g_warning ("Preedit pixmap is already destroyed.\n");
	  error |= GDK_IC_STATUS_PIXMAP;
	}
      else
	{
	  if (pattr->status_pixmap != attr->status_pixmap)
	    {
	      if (pattr->status_pixmap != NULL)
		gdk_pixmap_unref (pattr->status_pixmap);
	      if (attr->status_pixmap)
		gdk_pixmap_ref (attr->status_pixmap);
	      pattr->status_pixmap = attr->status_pixmap;
	      newattr |= GDK_IC_STATUS_PIXMAP;
	    }
	}
    }

  if (mask & GDK_IC_STATUS_COLORMAP)
    {
      if (pattr->status_colormap != attr->status_colormap)
	{
	  if (pattr->status_colormap != NULL)
	    gdk_colormap_unref (pattr->status_colormap);
	  if (attr->status_colormap != NULL)
	    gdk_colormap_ref (attr->status_colormap);
	  pattr->status_colormap = attr->status_colormap;
	  newattr |= GDK_IC_STATUS_COLORMAP;
	}
    }

  if (private->xic == NULL)
    return error;

  error |= gdk_ic_real_set_attr (ic, pattr, newattr);

  return error;
}

GdkICAttributesType
gdk_ic_get_attr (GdkIC *ic,
    		 GdkICAttr *attr,
		 GdkICAttributesType mask)
{
  GdkICPrivate *private;
  GdkICAttr *pattr;
  GdkICAttributesType known, unknown = 0;

  g_return_val_if_fail (ic != NULL, -1);
  g_return_val_if_fail (attr != NULL, -1);

  private = (GdkICPrivate *) ic;
  pattr = private->attr;

  known = mask & private->mask;

  if (known & GDK_IC_STYLE)
    attr->style = pattr->style;
  if (known & GDK_IC_CLIENT_WINDOW)
    attr->client_window = pattr->client_window;
  if (known & GDK_IC_FOCUS_WINDOW)
    attr->focus_window = pattr->focus_window;
  if (known & GDK_IC_FILTER_EVENTS)
    attr->filter_events = pattr->filter_events;
  if (known & GDK_IC_LINE_SPACING)
    attr->line_spacing = pattr->line_spacing;
  if (known & GDK_IC_CURSOR)
    attr->cursor = pattr->cursor;

  if (known & GDK_IC_PREEDIT_FONTSET)
    attr->preedit_fontset = pattr->preedit_fontset;
  if (known & GDK_IC_PREEDIT_AREA)
    attr->preedit_area = pattr->preedit_area;
  if (known & GDK_IC_PREEDIT_AREA_NEEDED)
    attr->preedit_area_needed = pattr->preedit_area_needed;
  if (known & GDK_IC_PREEDIT_FOREGROUND)
    attr->preedit_foreground = pattr->preedit_foreground;
  if (known & GDK_IC_PREEDIT_BACKGROUND)
    attr->preedit_background = pattr->preedit_background;
  if (known & GDK_IC_PREEDIT_PIXMAP)
    attr->preedit_pixmap = pattr->preedit_pixmap;
  if (known & GDK_IC_PREEDIT_COLORMAP)
    attr->preedit_colormap = pattr->preedit_colormap;

  if (known & GDK_IC_STATUS_FONTSET)
    attr->status_fontset = pattr->status_fontset;
  if (known & GDK_IC_STATUS_AREA)
    attr->status_area = pattr->status_area;
  if (known & GDK_IC_STATUS_AREA_NEEDED)
    attr->status_area_needed = pattr->status_area_needed;
  if (known & GDK_IC_STATUS_FOREGROUND)
    attr->status_foreground = pattr->status_foreground;
  if (known & GDK_IC_STATUS_BACKGROUND)
    attr->status_background = pattr->status_background;
  if (known & GDK_IC_STATUS_PIXMAP)
    attr->status_pixmap = pattr->status_pixmap;
  if (known & GDK_IC_STATUS_COLORMAP)
    attr->status_colormap = pattr->status_colormap;

  if (private->xic)
    {
      unknown = mask & ~(private->mask);

      if (unknown & GDK_IC_FOCUS_WINDOW)
	attr->focus_window = pattr->client_window;
      if (unknown & GDK_IC_FILTER_EVENTS)
	{
	  gdk_ic_get_events (ic);
	  attr->filter_events = pattr->filter_events;
	}
      if (mask & GDK_IC_SPOT_LOCATION)
	{
	  XPoint point;
	  XVaNestedList *list;
	  
	  list = XVaCreateNestedList (0, XNSpotLocation, &point, NULL);
	  if (XGetICValues (private->xic, XNPreeditAttributes, list, NULL))
	    unknown &= ~GDK_IC_SPOT_LOCATION;
	  else
	    {
	      pattr->spot_location.x = point.x;
	      pattr->spot_location.y = point.y;
	      private->mask |= GDK_IC_SPOT_LOCATION;

	      attr->spot_location = pattr->spot_location;
	    }
	  XFree (list);
	}
      if (unknown & GDK_IC_PREEDIT_AREA_NEEDED)
	{
	  XRectangle rect;
	  XVaNestedList *list;

	  list = XVaCreateNestedList (0, XNAreaNeeded, &rect, NULL);
	  if (XGetICValues (private->xic, XNPreeditAttributes, list, NULL))
	    unknown &= ~GDK_IC_PREEDIT_AREA_NEEDED;
	  else
	    {
	      pattr->preedit_area_needed.x = rect.x;
	      pattr->preedit_area_needed.y = rect.y;
	      pattr->preedit_area_needed.width = rect.width;
	      pattr->preedit_area_needed.height = rect.height;
	      private->mask |= GDK_IC_PREEDIT_AREA_NEEDED;

	      attr->preedit_area = pattr->preedit_area;
	    }
	  XFree (list);
	}
      if (unknown & GDK_IC_STATUS_AREA_NEEDED)
	{
	  XRectangle rect;
	  XVaNestedList *list;

	  list = XVaCreateNestedList (0, XNAreaNeeded, &rect, NULL);
	  if (XGetICValues (private->xic, XNStatusAttributes, list, NULL))
	    unknown &= ~GDK_IC_STATUS_AREA_NEEDED;
	  else
	    {
	      pattr->status_area_needed.x = rect.x;
	      pattr->status_area_needed.y = rect.y;
	      pattr->status_area_needed.width = rect.width;
	      pattr->status_area_needed.height = rect.height;
	      private->mask |= GDK_IC_STATUS_AREA_NEEDED;

	      attr->status_area = pattr->status_area;
	    }
	  XFree (list);
	}
    }

  return mask & ~known & ~unknown;
}

GdkEventMask 
gdk_ic_get_events (GdkIC *ic)
{
  GdkEventMask mask;
  glong xmask;
  glong bit;
  GdkICPrivate *private;
  gint i;
  
  /*  From gdkwindow.c	*/
  
  g_return_val_if_fail (ic != NULL, 0);
  
  private = (GdkICPrivate *) ic;

  if (private->mask & GDK_IC_FILTER_EVENTS)
    return private->attr->filter_events;
  
  if (XGetICValues (private->xic, XNFilterEvents, &xmask, NULL) != NULL)
    {
      GDK_NOTE (XIM, g_warning ("Call to XGetICValues: %s failed", XNFilterEvents));
      return 0;
    }
  
  mask = 0;
  for (i=0, bit=2; i < gdk_nevent_masks; i++, bit <<= 1)
    if (xmask & gdk_event_mask_table [i])
      {
	mask |= bit;
	xmask &= ~ gdk_event_mask_table [i];
      }
  
  if (xmask)
    g_warning ("ic requires events not supported by the application (%#04lx)", xmask);
  
  private->attr->filter_events = mask;
  private->mask |= GDK_IC_FILTER_EVENTS;

  return mask;
}

void 
gdk_ic_cleanup (void)
{
  gint destroyed;
  
  destroyed = 0;
  while (xim_ic_list != NULL)
    {
      gdk_ic_destroy ((GdkIC *) xim_ic_list->data);
      destroyed ++;
    }
#ifdef G_ENABLE_DEBUG
  if ((gdk_debug_flags & GDK_DEBUG_XIM) && destroyed > 0)
    {
      g_warning ("Cleaned up %i IC(s)\n", destroyed);
    }
#endif /* G_ENABLE_DEBUG */
}

#else /* !USE_XIM */

void 
gdk_im_begin (GdkIC *ic, GdkWindow* window)
{
}

void 
gdk_im_end (void)
{
}

GdkIMStyle
gdk_im_decide_style (GdkIMStyle supported_style)
{
  return GDK_IM_PREEDIT_NONE | GDK_IM_STATUS_NONE;
}

GdkIMStyle
gdk_im_set_best_style (GdkIMStyle style)
{
  return GDK_IM_PREEDIT_NONE | GDK_IM_STATUS_NONE;
}

gint 
gdk_im_ready (void)
{
  return FALSE;
}

GdkIC * 
gdk_ic_new (GdkICAttr *attr, GdkICAttributesType mask)
{
  return NULL;
}

void 
gdk_ic_destroy (GdkIC *ic)
{
}

GdkIMStyle
gdk_ic_get_style (GdkIC *ic)
{
  return GDK_IM_PREEDIT_NONE | GDK_IM_STATUS_NONE;
}

void 
gdk_ic_set_values (GdkIC *ic, ...)
{
}

void 
gdk_ic_get_values (GdkIC *ic, ...)
{
}

GdkICAttributesType 
gdk_ic_set_attr (GdkIC *ic, GdkICAttr *attr, GdkICAttributesType mask)
{
  return 0;
}

GdkICAttributesType 
gdk_ic_get_attr (GdkIC *ic, GdkICAttr *attr, GdkICAttributesType mask)
{
  return 0;
}

GdkEventMask 
gdk_ic_get_events (GdkIC *ic)
{
  return 0;
}

#endif /* USE_XIM */

/*
 * gdk_wcstombs 
 *
 * Returns a multi-byte string converted from the specified array
 * of wide characters. The string is newly allocated. The array of
 * wide characters must be null-terminated. If the conversion is
 * failed, it returns NULL.
 */
gchar *
gdk_wcstombs (const GdkWChar *src)
{
  gchar *mbstr;

  if (gdk_use_mb)
    {
      XTextProperty tpr;

      if (sizeof(wchar_t) != sizeof(GdkWChar))
	{
	  gint i;
	  wchar_t *src_alt;
	  for (i=0; src[i]; i++);
	  src_alt = g_new (wchar_t, i+1);
	  for (; i>=0; i--)
	    src_alt[i] = src[i];
	  if (XwcTextListToTextProperty (gdk_display, &src_alt, 1, XTextStyle, &tpr)
	      != Success)
	    {
	      g_free (src_alt);
	      return NULL;
	    }
	  g_free (src_alt);
	}
      else
	{
	  if (XwcTextListToTextProperty (gdk_display, (wchar_t**)&src, 1,
					 XTextStyle, &tpr) != Success)
	    {
	      return NULL;
	    }
	}
      /*
       * We must copy the string into an area allocated by glib, because
       * the string 'tpr.value' must be freed by XFree().
       */
      mbstr = g_strdup(tpr.value);
      XFree (tpr.value);
    }
  else
    {
      gint length = 0;
      gint i;

      while (src[length] != 0)
	length++;
      
      mbstr = g_new (gchar, length + 1);

      for (i=0; i<length+1; i++)
	mbstr[i] = src[i];
    }

  return mbstr;
}
  
/*
 * gdk_mbstowcs
 *
 * Converts the specified string into wide characters, and, returns the
 * number of wide characters written. The string 'src' must be
 * null-terminated. If the conversion is failed, it returns -1.
 */
gint
gdk_mbstowcs (GdkWChar *dest, const gchar *src, gint dest_max)
{
  if (gdk_use_mb)
    {
      XTextProperty tpr;
      wchar_t **wstrs, *wstr_src;
      gint num_wstrs;
      gint len_cpy;
      if (XmbTextListToTextProperty (gdk_display, (char **)&src, 1, XTextStyle,
				     &tpr)
	  != Success)
	{
	  /* NoMem or LocaleNotSupp */
	  return -1;
	}
      if (XwcTextPropertyToTextList (gdk_display, &tpr, &wstrs, &num_wstrs)
	  != Success)
	{
	  /* InvalidChar */
	  XFree(tpr.value);
	  return -1;
	}
      XFree(tpr.value);
      if (num_wstrs == 0)
	return 0;
      wstr_src = wstrs[0];
      for (len_cpy=0; len_cpy<dest_max && wstr_src[len_cpy]; len_cpy++)
	dest[len_cpy] = wstr_src[len_cpy];
      XwcFreeStringList (wstrs);
      return len_cpy;
    }
  else
    {
      gint i;

      for (i=0; i<dest_max && src[i]; i++)
	dest[i] = src[i];

      return i;
    }
}