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units: Handle negative values in clutter_units_from_string()

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In order to allow values like "-2cm" in ClutterScript,
clutter_units_from_string() needs to handle negative values as well.
This commit is contained in:
Bastian Winkler 2013-05-22 15:10:28 +02:00
parent 12de1ab9cd
commit 44f283bb72
2 changed files with 17 additions and 0 deletions
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13
clutter/clutter-units.c
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@ -480,11 +480,21 @@ clutter_units_from_string (ClutterUnits *units,
ClutterBackend *backend;
ClutterUnitType unit_type;
gfloat value;
gboolean negative = FALSE;
g_return_val_if_fail (units != NULL, FALSE);
g_return_val_if_fail (str != NULL, FALSE);
/* strip leading space */
while (g_ascii_isspace (*str) || *str == '+')
str++;
if (*str == '-')
{
negative = TRUE;
str++;
}
while (g_ascii_isspace (*str))
str++;
@ -550,6 +560,9 @@ clutter_units_from_string (ClutterUnits *units,
if (*str != '\0')
return FALSE;
if (negative)
value *= -1;
backend = clutter_get_default_backend ();
units->unit_type = unit_type;

4
tests/conform/units.c
View File

@ -108,6 +108,10 @@ units_string (TestConformSimpleFixture *fixture,
g_assert (clutter_units_get_unit_type (&units) == CLUTTER_UNIT_POINT);
g_assert_cmpfloat (clutter_units_get_unit_value (&units), ==, 0.5f);
g_assert (clutter_units_from_string (&units, "-3 px") == TRUE);
g_assert (clutter_units_get_unit_type (&units) == CLUTTER_UNIT_PIXEL);
g_assert_cmpfloat (clutter_units_get_unit_value (&units), ==, -3.0);
g_assert (clutter_units_from_string (&units, "1 omg!!pony") == FALSE);
clutter_units_from_pt (&units, 24.0);