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app: add gimp_canvas_polygon_set_points()

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and allow NULL points in both this function and new().
This commit is contained in:
Michael Natterer
2017-06-23 01:40:35 +02:00
parent c3766b6109
commit 9d8f94375e
2 changed files with 34 additions and 2 deletions
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32
app/display/gimpcanvaspolygon.c
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@ -274,6 +274,9 @@ gimp_canvas_polygon_draw (GimpCanvasItem *item,
GimpVector2 *points;
gint i;
if (! private->points)
return;
points = g_new0 (GimpVector2, private->n_points);
gimp_canvas_polygon_transform (item, points);
@ -302,6 +305,9 @@ gimp_canvas_polygon_get_extents (GimpCanvasItem *item)
gint x1, y1, x2, y2;
gint i;
if (! private->points)
return NULL;
points = g_new0 (GimpVector2, private->n_points);
gimp_canvas_polygon_transform (item, points);
@ -345,7 +351,7 @@ gimp_canvas_polygon_new (GimpDisplayShell *shell,
GimpArray *array;
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
g_return_val_if_fail (points != NULL && n_points > 1, NULL);
g_return_val_if_fail (points == NULL || n_points > 0, NULL);
array = gimp_array_new ((const guint8 *) points,
n_points * sizeof (GimpVector2), TRUE);
@ -375,7 +381,7 @@ gimp_canvas_polygon_new_from_coords (GimpDisplayShell *shell,
gint i;
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
g_return_val_if_fail (coords != NULL && n_coords > 1, NULL);
g_return_val_if_fail (coords == NULL || n_coords > 0, NULL);
points = g_new (GimpVector2, n_coords);
@ -400,3 +406,25 @@ gimp_canvas_polygon_new_from_coords (GimpDisplayShell *shell,
return item;
}
void
gimp_canvas_polygon_set_points (GimpCanvasItem *polygon,
const GimpVector2 *points,
gint n_points)
{
GimpArray *array;
g_return_if_fail (GIMP_IS_CANVAS_POLYGON (polygon));
g_return_if_fail (points == NULL || n_points > 0);
array = gimp_array_new ((const guint8 *) points,
n_points * sizeof (GimpVector2), TRUE);
gimp_canvas_item_begin_change (polygon);
g_object_set (polygon,
"points", array,
NULL);
gimp_canvas_item_end_change (polygon);
gimp_array_free (array);
}