diff options
Diffstat (limited to 'gsk/gskpath.c')
| -rw-r--r-- | gsk/gskpath.c | 102 |
1 files changed, 94 insertions, 8 deletions
diff --git a/gsk/gskpath.c b/gsk/gskpath.c index b69dd44fb8..c79ba541db 100644 --- a/gsk/gskpath.c +++ b/gsk/gskpath.c @@ -62,6 +62,10 @@ struct _GskContourClass cairo_t *cr); gboolean (* get_bounds) (const GskContour *contour, graphene_rect_t *bounds); + gboolean (* foreach) (const GskContour *contour, + float tolerance, + GskPathForeachFunc func, + gpointer user_data); gpointer (* init_measure) (const GskContour *contour, float *out_length); void (* free_measure) (const GskContour *contour, @@ -157,6 +161,29 @@ gsk_rect_contour_get_bounds (const GskContour *contour, return TRUE; } +static gboolean +gsk_rect_contour_foreach (const GskContour *contour, + float tolerance, + GskPathForeachFunc func, + gpointer user_data) +{ + const GskRectContour *self = (const GskRectContour *) contour; + + graphene_point_t pts[] = { + GRAPHENE_POINT_INIT (self->x, self->y), + GRAPHENE_POINT_INIT (self->x + self->width, self->y), + GRAPHENE_POINT_INIT (self->x + self->width, self->y + self->height), + GRAPHENE_POINT_INIT (self->x, self->y + self->height), + GRAPHENE_POINT_INIT (self->x, self->y) + }; + + return func (GSK_PATH_MOVE, &pts[0], 1, user_data) + && func (GSK_PATH_LINE, &pts[0], 2, user_data) + && func (GSK_PATH_LINE, &pts[1], 2, user_data) + && func (GSK_PATH_LINE, &pts[2], 2, user_data) + && func (GSK_PATH_CLOSE, &pts[3], 2, user_data); +} + static gpointer gsk_rect_contour_init_measure (const GskContour *contour, float *out_length) @@ -258,6 +285,7 @@ static const GskContourClass GSK_RECT_CONTOUR_CLASS = gsk_rect_contour_print, gsk_rect_contour_to_cairo, gsk_rect_contour_get_bounds, + gsk_rect_contour_foreach, gsk_rect_contour_init_measure, gsk_rect_contour_free_measure, gsk_rect_contour_copy, @@ -282,14 +310,6 @@ gsk_rect_contour_init (GskContour *contour, /* STANDARD CONTOUR */ -typedef enum -{ - GSK_PATH_MOVE, - GSK_PATH_CLOSE, - GSK_PATH_LINE, - GSK_PATH_CURVE, -} GskPathOperation; - typedef struct _GskStandardOperation GskStandardOperation; struct _GskStandardOperation { @@ -327,6 +347,30 @@ gsk_standard_contour_get_size (const GskContour *contour) return gsk_standard_contour_compute_size (self->n_ops, self->n_points); } +static gboolean +gsk_standard_contour_foreach (const GskContour *contour, + float tolerance, + GskPathForeachFunc func, + gpointer user_data) +{ + const GskStandardContour *self = (const GskStandardContour *) contour; + gsize i; + const gsize n_points[] = { + [GSK_PATH_MOVE] = 1, + [GSK_PATH_CLOSE] = 2, + [GSK_PATH_LINE] = 2, + [GSK_PATH_CURVE] = 4 + }; + + for (i = 0; i < self->n_ops; i ++) + { + if (!func (self->ops[i].op, &self->points[self->ops[i].point], n_points[self->ops[i].op], user_data)) + return FALSE; + } + + return TRUE; +} + static GskPathFlags gsk_standard_contour_get_flags (const GskContour *contour) { @@ -627,6 +671,7 @@ static const GskContourClass GSK_STANDARD_CONTOUR_CLASS = gsk_standard_contour_print, gsk_standard_contour_to_cairo, gsk_standard_contour_get_bounds, + gsk_standard_contour_foreach, gsk_standard_contour_init_measure, gsk_standard_contour_free_measure, gsk_standard_contour_copy, @@ -682,6 +727,15 @@ gsk_contour_dup (const GskContour *src) return copy; } +static gboolean +gsk_contour_foreach (const GskContour *contour, + float tolerance, + GskPathForeachFunc func, + gpointer user_data) +{ + return contour->klass->foreach (contour, tolerance, func, user_data); +} + gpointer gsk_contour_init_measure (GskPath *path, gsize i, @@ -1013,6 +1067,38 @@ gsk_path_get_bounds (GskPath *self, } /** + * gsk_path_foreach: + * @self: a #GskPath + * @func: (scope call) (closure user_data): the function to call for operations + * @user_data: (nullable): user data passed to @func + * + * Calls @func for every operation of the path. Note that this only approximates + * @self, because paths can contain optimizations for various specialized contours. + * + * Returns: %FALSE if @func returned %FALSE, %TRUE otherwise. + **/ +gboolean +gsk_path_foreach (GskPath *self, + GskPathForeachFunc func, + gpointer user_data) +{ + gsize i; + + g_return_val_if_fail (self != NULL, FALSE); + g_return_val_if_fail (func, FALSE); + + for (i = 0; i < self->n_contours; i++) + { + if (!gsk_contour_foreach (self->contours[i], GSK_PATH_TOLERANCE_DEFAULT, func, user_data)) + return FALSE; + } + + return TRUE; +} + +/* BUILDER */ + +/** * GskPathBuilder: * * A #GskPathBuilder struct is an opaque struct. It is meant to |