gdkfont.c

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	  width = XwcTextEscapement (fontset, text_wchar, text_length);
	  g_free (text_wchar);
	}
      break;
    default:
      width = 0;
    }
  return width;
}

/* Problem: What if a character is a 16 bits character ?? */
gint
gdk_char_width (GdkFont *font,
		gchar    character)
{
  GdkFontPrivate *private;
  XCharStruct *chars;
  gint width;
  guint ch = character & 0xff;  /* get rid of sign-extension */
  XFontStruct *xfont;
  XFontSet fontset;

  g_return_val_if_fail (font != NULL, -1);

  private = (GdkFontPrivate*) font;

  switch (font->type)
    {
    case GDK_FONT_FONT:
      /* only 8 bits characters are considered here */
      xfont = (XFontStruct *) private->xfont;
      if ((xfont->min_byte1 == 0) &&
	  (xfont->max_byte1 == 0) &&
	  (ch >= xfont->min_char_or_byte2) &&
	  (ch <= xfont->max_char_or_byte2))
	{
	  chars = xfont->per_char;
	  if (chars)
	    width = chars[ch - xfont->min_char_or_byte2].width;
	  else
	    width = xfont->min_bounds.width;
	}
      else
	{
	  width = XTextWidth (xfont, &character, 1);
	}
      break;
    case GDK_FONT_FONTSET:
      fontset = (XFontSet) private->xfont;
      width = XmbTextEscapement (fontset, &character, 1) ;
      break;
    default:
      width = 0;
    }
  return width;
}

gint
gdk_char_width_wc (GdkFont *font,
		   GdkWChar character)
{
  GdkFontPrivate *private;
  XCharStruct *chars;
  gint width;
  guint ch = character & 0xff;  /* get rid of sign-extension */
  XFontStruct *xfont;
  XFontSet fontset;

  g_return_val_if_fail (font != NULL, -1);

  private = (GdkFontPrivate*) font;

  switch (font->type)
    {
    case GDK_FONT_FONT:
      /* only 8 bits characters are considered here */
      xfont = (XFontStruct *) private->xfont;
      if ((xfont->min_byte1 == 0) &&
          (xfont->max_byte1 == 0) &&
          (ch >= xfont->min_char_or_byte2) &&
          (ch <= xfont->max_char_or_byte2))
        {
          chars = xfont->per_char;
          if (chars)
            width = chars[ch - xfont->min_char_or_byte2].width;
          else
            width = xfont->min_bounds.width;
        }
      else
        {
          char ch2 = character;
          width = XTextWidth (xfont, &ch2, 1);
        }
      break;
    case GDK_FONT_FONTSET:
      fontset = (XFontSet) private->xfont;
      {
	wchar_t char_wc = character;
        width = XwcTextEscapement (fontset, &char_wc, 1) ;
      }
      break;
    default:
      width = 0;
    }
  return width;
}

gint
gdk_string_measure (GdkFont     *font,
                    const gchar *string)
{
  g_return_val_if_fail (font != NULL, -1);
  g_return_val_if_fail (string != NULL, -1);

  return gdk_text_measure (font, string, strlen (string));
}

void
gdk_text_extents (GdkFont     *font,
                  const gchar *text,
                  gint         text_length,
		  gint        *lbearing,
		  gint        *rbearing,
		  gint        *width,
		  gint        *ascent,
		  gint        *descent)
{
  GdkFontPrivate *private;
  XCharStruct overall;
  XFontStruct *xfont;
  XFontSet    fontset;
  XRectangle  ink, logical;
  int direction;
  int font_ascent;
  int font_descent;

  g_return_if_fail (font != NULL);
  g_return_if_fail (text != NULL);

  private = (GdkFontPrivate*) font;

  switch (font->type)
    {
    case GDK_FONT_FONT:
      xfont = (XFontStruct *) private->xfont;
      if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
	{
	  XTextExtents (xfont, text, text_length,
			&direction, &font_ascent, &font_descent,
			&overall);
	}
      else
	{
	  XTextExtents16 (xfont, (XChar2b *) text, text_length / 2,
			  &direction, &font_ascent, &font_descent,
			  &overall);
	}
      if (lbearing)
	*lbearing = overall.lbearing;
      if (rbearing)
	*rbearing = overall.rbearing;
      if (width)
	*width = overall.width;
      if (ascent)
	*ascent = overall.ascent;
      if (descent)
	*descent = overall.descent;
      break;
    case GDK_FONT_FONTSET:
      fontset = (XFontSet) private->xfont;
      XmbTextExtents (fontset, text, text_length, &ink, &logical);
      if (lbearing)
	*lbearing = ink.x;
      if (rbearing)
	*rbearing = ink.x + ink.width;
      if (width)
	*width = logical.width;
      if (ascent)
	*ascent = -ink.y;
      if (descent)
	*descent = ink.y + ink.height;
      break;
    }

}

void
gdk_text_extents_wc (GdkFont        *font,
		     const GdkWChar *text,
		     gint            text_length,
		     gint           *lbearing,
		     gint           *rbearing,
		     gint           *width,
		     gint           *ascent,
		     gint           *descent)
{
  GdkFontPrivate *private;
  XCharStruct overall;
  XFontStruct *xfont;
  XFontSet    fontset;
  XRectangle  ink, logical;
  int direction;
  int font_ascent;
  int font_descent;

  g_return_if_fail (font != NULL);
  g_return_if_fail (text != NULL);

  private = (GdkFontPrivate*) font;

  switch (font->type)
    {
    case GDK_FONT_FONT:
      {
	gchar *text_8bit;
	gint i;

	xfont = (XFontStruct *) private->xfont;
	g_return_if_fail ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0));

	text_8bit = g_new (gchar, text_length);
	for (i=0; i<text_length; i++) 
	  text_8bit[i] = text[i];

	XTextExtents (xfont, text_8bit, text_length,
		      &direction, &font_ascent, &font_descent,
		      &overall);
	g_free (text_8bit);
	
	if (lbearing)
	  *lbearing = overall.lbearing;
	if (rbearing)
	  *rbearing = overall.rbearing;
	if (width)
	  *width = overall.width;
	if (ascent)
	  *ascent = overall.ascent;
	if (descent)
	  *descent = overall.descent;
	break;
      }
    case GDK_FONT_FONTSET:
      fontset = (XFontSet) private->xfont;

      if (sizeof(GdkWChar) == sizeof(wchar_t))
	XwcTextExtents (fontset, (wchar_t *)text, text_length, &ink, &logical);
      else
	{
	  wchar_t *text_wchar;
	  gint i;
	  
	  text_wchar = g_new (wchar_t, text_length);
	  for (i = 0; i < text_length; i++)
	    text_wchar[i] = text[i];
	  XwcTextExtents (fontset, text_wchar, text_length, &ink, &logical);
	  g_free (text_wchar);
	}
      if (lbearing)
	*lbearing = ink.x;
      if (rbearing)
	*rbearing = ink.x + ink.width;
      if (width)
	*width = logical.width;
      if (ascent)
	*ascent = -ink.y;
      if (descent)
	*descent = ink.y + ink.height;
      break;
    }

}

void
gdk_string_extents (GdkFont     *font,
		    const gchar *string,
		    gint        *lbearing,
		    gint        *rbearing,
		    gint        *width,
		    gint        *ascent,
		    gint        *descent)
{
  g_return_if_fail (font != NULL);
  g_return_if_fail (string != NULL);

  gdk_text_extents (font, string, strlen (string),
		    lbearing, rbearing, width, ascent, descent);
}


gint
gdk_text_measure (GdkFont     *font,
                  const gchar *text,
                  gint         text_length)
{
  GdkFontPrivate *private;
  XCharStruct overall;
  XFontStruct *xfont;
  XFontSet    fontset;
  XRectangle  ink, log;
  int direction;
  int font_ascent;
  int font_descent;
  gint width;

  g_return_val_if_fail (font != NULL, -1);
  g_return_val_if_fail (text != NULL, -1);

  private = (GdkFontPrivate*) font;

  switch (font->type)
    {
    case GDK_FONT_FONT:
      xfont = (XFontStruct *) private->xfont;
      if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
	{
	  XTextExtents (xfont, text, text_length,
			&direction, &font_ascent, &font_descent,
			&overall);
	}
      else
	{
	  XTextExtents16 (xfont, (XChar2b *) text, text_length / 2,
			  &direction, &font_ascent, &font_descent,
			  &overall);
	}
      width = overall.rbearing;
      break;
    case GDK_FONT_FONTSET:
      fontset = (XFontSet) private->xfont;
      XmbTextExtents (fontset, text, text_length, &ink, &log);
      width = ink.x + ink.width;
      break;
    default:
      width = 0;
    }
  return width;
}

gint
gdk_char_measure (GdkFont *font,
                  gchar    character)
{
  g_return_val_if_fail (font != NULL, -1);

  return gdk_text_measure (font, &character, 1);
}

gint
gdk_string_height (GdkFont     *font,
		   const gchar *string)
{
  g_return_val_if_fail (font != NULL, -1);
  g_return_val_if_fail (string != NULL, -1);

  return gdk_text_height (font, string, strlen (string));
}

gint
gdk_text_height (GdkFont     *font,
		 const gchar *text,
		 gint         text_length)
{
  GdkFontPrivate *private;
  XCharStruct overall;
  XFontStruct *xfont;
  XFontSet    fontset;
  XRectangle  ink, log;
  int direction;
  int font_ascent;
  int font_descent;
  gint height;

  g_return_val_if_fail (font != NULL, -1);
  g_return_val_if_fail (text != NULL, -1);

  private = (GdkFontPrivate*) font;

  switch (font->type)
    {
    case GDK_FONT_FONT:
      xfont = (XFontStruct *) private->xfont;
      if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
	{
	  XTextExtents (xfont, text, text_length,
			&direction, &font_ascent, &font_descent,
			&overall);
	}
      else
	{
	  XTextExtents16 (xfont, (XChar2b *) text, text_length / 2,
			  &direction, &font_ascent, &font_descent,
			  &overall);
	}
      height = overall.ascent + overall.descent;
      break;
    case GDK_FONT_FONTSET:
      fontset = (XFontSet) private->xfont;
      XmbTextExtents (fontset, text, text_length, &ink, &log);
      height = log.height;
      break;
    default:
      height = 0;
    }
  return height;
}

gint
gdk_char_height (GdkFont *font,
		 gchar    character)
{
  g_return_val_if_fail (font != NULL, -1);

  return gdk_text_height (font, &character, 1);
}