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app: add GimpProjectable::bounds-changed signal

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... and a corresponding gimp_projectable_bounds_changed() function.

This signal can be emitted by implementers of GimpProjectable,
instead of the GimpProjectable::structure-changed signal, when the
projectable's bounds change, but its content does not -- i.e., the
old content simply gets cropped to the new bounds.

(cherry picked from commit 460c3d1349)
This commit is contained in:
Ell
2018-08-03 12:12:01 -04:00
parent c0a4e12b3d
commit 2ad7fe9763
2 changed files with 37 additions and 0 deletions
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27
app/core/gimpprojectable.c
View File

@ -35,6 +35,7 @@ enum
INVALIDATE,
FLUSH,
STRUCTURE_CHANGED,
BOUNDS_CHANGED,
LAST_SIGNAL
};
@ -82,6 +83,19 @@ gimp_projectable_default_init (GimpProjectableInterface *iface)
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
projectable_signals[BOUNDS_CHANGED] =
g_signal_new ("bounds-changed",
G_TYPE_FROM_CLASS (iface),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpProjectableInterface, bounds_changed),
NULL, NULL,
gimp_marshal_VOID__INT_INT_INT_INT,
G_TYPE_NONE, 4,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT);
}
@ -118,6 +132,19 @@ gimp_projectable_structure_changed (GimpProjectable *projectable)
g_signal_emit (projectable, projectable_signals[STRUCTURE_CHANGED], 0);
}
void
gimp_projectable_bounds_changed (GimpProjectable *projectable,
gint old_x,
gint old_y,
gint old_width,
gint old_height)
{
g_return_if_fail (GIMP_IS_PROJECTABLE (projectable));
g_signal_emit (projectable, projectable_signals[BOUNDS_CHANGED], 0,
old_x, old_y, old_width, old_height);
}
GimpImage *
gimp_projectable_get_image (GimpProjectable *projectable)
{

10
app/core/gimpprojectable.h
View File

@ -43,6 +43,11 @@ struct _GimpProjectableInterface
void (* flush) (GimpProjectable *projectable,
gboolean invalidate_preview);
void (* structure_changed) (GimpProjectable *projectable);
void (* bounds_changed) (GimpProjectable *projectable,
gint old_x,
gint old_y,
gint old_width,
gint old_height);
/* virtual functions */
GimpImage * (* get_image) (GimpProjectable *projectable);
@ -70,6 +75,11 @@ void gimp_projectable_invalidate (GimpProjectable *projectable,
void gimp_projectable_flush (GimpProjectable *projectable,
gboolean preview_invalidated);
void gimp_projectable_structure_changed (GimpProjectable *projectable);
void gimp_projectable_bounds_changed (GimpProjectable *projectable,
gint old_x,
gint old_y,
gint old_width,
gint old_height);
GimpImage * gimp_projectable_get_image (GimpProjectable *projectable);
const Babl * gimp_projectable_get_format (GimpProjectable *projectable);