Add status CAIRO_STATUS_NEGATIVE_COUNT

To be used for things like passing a negative number of glyphs
to cairo_show_glyphs().

doc/public/tmpl/cairo-status.sgml

@@ -66,6 +66,7 @@ code is required before or after each individual cairo function call.
 @CAIRO_STATUS_FONT_TYPE_MISMATCH: 
 @CAIRO_STATUS_USER_FONT_IMMUTABLE: 
 @CAIRO_STATUS_USER_FONT_ERROR: 
+@CAIRO_STATUS_NEGATIVE_COUNT: 
 
 <!-- ##### FUNCTION cairo_status_to_string ##### -->
 <para>

doc/public/tmpl/cairo-user-fonts.sgml

@@ -9,13 +9,11 @@ User Fonts
 
 </para>
 
-
 <!-- ##### SECTION See_Also ##### -->
 <para>
 
 </para>
 
-
 <!-- ##### SECTION Stability_Level ##### -->
 
 

src/cairo-misc.c

@@ -107,6 +107,8 @@ cairo_status_to_string (cairo_status_t status)
 	return "the user-font is immutable";
     case CAIRO_STATUS_USER_FONT_ERROR:
 	return "error occurred in a user-font callback function";
+    case CAIRO_STATUS_NEGATIVE_COUNT:
+	return "negative number used where it is not allowed";
     }
 
     return "<unknown error status>";

src/cairo-surface.c

@@ -2579,6 +2579,7 @@ _cairo_surface_create_in_error (cairo_status_t status)
     case CAIRO_STATUS_FONT_TYPE_MISMATCH:
     case CAIRO_STATUS_USER_FONT_IMMUTABLE:
     case CAIRO_STATUS_USER_FONT_ERROR:
+    case CAIRO_STATUS_NEGATIVE_COUNT:
     default:
 	_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
 	return (cairo_surface_t *) &_cairo_surface_nil;

src/cairo.h

@@ -206,6 +206,7 @@ typedef struct _cairo_user_data_key {
  * @CAIRO_STATUS_FONT_TYPE_MISMATCH: the font type is not appropriate for the operation (Since 1.8)
  * @CAIRO_STATUS_USER_FONT_IMMUTABLE: the user-font is immutable (Since 1.8)
  * @CAIRO_STATUS_USER_FONT_ERROR: error occurred in a user-font callback function (Since 1.8)
+ * @CAIRO_STATUS_NEGATIVE_COUNT: negative number used where it is not allowed (Since 1.8)
  *
  * #cairo_status_t is used to indicate errors that can occur when
  * using Cairo. In some cases it is returned directly by functions.
@@ -243,7 +244,8 @@ typedef enum _cairo_status {
     CAIRO_STATUS_INVALID_STRIDE,
     CAIRO_STATUS_FONT_TYPE_MISMATCH,
     CAIRO_STATUS_USER_FONT_IMMUTABLE,
-    CAIRO_STATUS_USER_FONT_ERROR
+    CAIRO_STATUS_USER_FONT_ERROR,
+    CAIRO_STATUS_NEGATIVE_COUNT
     /* after adding a new error: update CAIRO_STATUS_LAST_STATUS in cairoint.h */
 } cairo_status_t;
 

src/cairoint.h

@@ -110,7 +110,7 @@ _cairo_win32_tmpfile (void);
  * a bit of a pain, but it should be easy to always catch as long as
  * one adds a new test case to test a trigger of the new status value.
  */
-#define CAIRO_STATUS_LAST_STATUS CAIRO_STATUS_USER_FONT_ERROR
+#define CAIRO_STATUS_LAST_STATUS CAIRO_STATUS_NEGATIVE_COUNT
 
 
 /* Size in bytes of buffer to use off the stack per functions.