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Diffstat (limited to 'app/core/gimpdrawablestack.c')
| -rw-r--r-- | app/core/gimpdrawablestack.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/app/core/gimpdrawablestack.c b/app/core/gimpdrawablestack.c new file mode 100644 index 0000000..c8e706a --- /dev/null +++ b/app/core/gimpdrawablestack.c @@ -0,0 +1,224 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis + * + * gimpdrawablestack.c + * Copyright (C) 2008 Michael Natterer <mitch@gimp.org> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gdk-pixbuf/gdk-pixbuf.h> +#include <gegl.h> + +#include "core-types.h" + +#include "gimpdrawable.h" +#include "gimpdrawablestack.h" +#include "gimpmarshal.h" + + +enum +{ + UPDATE, + LAST_SIGNAL +}; + + +/* local function prototypes */ + +static void gimp_drawable_stack_constructed (GObject *object); + +static void gimp_drawable_stack_add (GimpContainer *container, + GimpObject *object); +static void gimp_drawable_stack_remove (GimpContainer *container, + GimpObject *object); +static void gimp_drawable_stack_reorder (GimpContainer *container, + GimpObject *object, + gint new_index); + +static void gimp_drawable_stack_drawable_update (GimpItem *item, + gint x, + gint y, + gint width, + gint height, + GimpDrawableStack *stack); +static void gimp_drawable_stack_drawable_active (GimpItem *item, + GimpDrawableStack *stack); + + +G_DEFINE_TYPE (GimpDrawableStack, gimp_drawable_stack, GIMP_TYPE_ITEM_STACK) + +#define parent_class gimp_drawable_stack_parent_class + +static guint stack_signals[LAST_SIGNAL] = { 0 }; + + +static void +gimp_drawable_stack_class_init (GimpDrawableStackClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpContainerClass *container_class = GIMP_CONTAINER_CLASS (klass); + + stack_signals[UPDATE] = + g_signal_new ("update", + G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (GimpDrawableStackClass, update), + 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); + + object_class->constructed = gimp_drawable_stack_constructed; + + container_class->add = gimp_drawable_stack_add; + container_class->remove = gimp_drawable_stack_remove; + container_class->reorder = gimp_drawable_stack_reorder; +} + +static void +gimp_drawable_stack_init (GimpDrawableStack *stack) +{ +} + +static void +gimp_drawable_stack_constructed (GObject *object) +{ + GimpContainer *container = GIMP_CONTAINER (object); + + G_OBJECT_CLASS (parent_class)->constructed (object); + + gimp_assert (g_type_is_a (gimp_container_get_children_type (container), + GIMP_TYPE_DRAWABLE)); + + gimp_container_add_handler (container, "update", + G_CALLBACK (gimp_drawable_stack_drawable_update), + container); + gimp_container_add_handler (container, "active-changed", + G_CALLBACK (gimp_drawable_stack_drawable_active), + container); +} + +static void +gimp_drawable_stack_add (GimpContainer *container, + GimpObject *object) +{ + GimpDrawableStack *stack = GIMP_DRAWABLE_STACK (container); + + GIMP_CONTAINER_CLASS (parent_class)->add (container, object); + + if (gimp_filter_get_active (GIMP_FILTER (object))) + gimp_drawable_stack_drawable_active (GIMP_ITEM (object), stack); +} + +static void +gimp_drawable_stack_remove (GimpContainer *container, + GimpObject *object) +{ + GimpDrawableStack *stack = GIMP_DRAWABLE_STACK (container); + + GIMP_CONTAINER_CLASS (parent_class)->remove (container, object); + + if (gimp_filter_get_active (GIMP_FILTER (object))) + gimp_drawable_stack_drawable_active (GIMP_ITEM (object), stack); +} + +static void +gimp_drawable_stack_reorder (GimpContainer *container, + GimpObject *object, + gint new_index) +{ + GimpDrawableStack *stack = GIMP_DRAWABLE_STACK (container); + + GIMP_CONTAINER_CLASS (parent_class)->reorder (container, object, new_index); + + if (gimp_filter_get_active (GIMP_FILTER (object))) + gimp_drawable_stack_drawable_active (GIMP_ITEM (object), stack); +} + + +/* public functions */ + +GimpContainer * +gimp_drawable_stack_new (GType drawable_type) +{ + g_return_val_if_fail (g_type_is_a (drawable_type, GIMP_TYPE_DRAWABLE), NULL); + + return g_object_new (GIMP_TYPE_DRAWABLE_STACK, + "name", g_type_name (drawable_type), + "children-type", drawable_type, + "policy", GIMP_CONTAINER_POLICY_STRONG, + NULL); +} + + +/* protected functions */ + +void +gimp_drawable_stack_update (GimpDrawableStack *stack, + gint x, + gint y, + gint width, + gint height) +{ + g_return_if_fail (GIMP_IS_DRAWABLE_STACK (stack)); + + g_signal_emit (stack, stack_signals[UPDATE], 0, + x, y, width, height); +} + + +/* private functions */ + +static void +gimp_drawable_stack_drawable_update (GimpItem *item, + gint x, + gint y, + gint width, + gint height, + GimpDrawableStack *stack) +{ + if (gimp_filter_get_active (GIMP_FILTER (item))) + { + gint offset_x; + gint offset_y; + + gimp_item_get_offset (item, &offset_x, &offset_y); + + gimp_drawable_stack_update (stack, + x + offset_x, y + offset_y, + width, height); + } +} + +static void +gimp_drawable_stack_drawable_active (GimpItem *item, + GimpDrawableStack *stack) +{ + GeglRectangle bounding_box; + + bounding_box = gimp_drawable_get_bounding_box (GIMP_DRAWABLE (item)); + + bounding_box.x += gimp_item_get_offset_x (item); + bounding_box.y += gimp_item_get_offset_y (item); + + gimp_drawable_stack_update (stack, + bounding_box.x, bounding_box.y, + bounding_box.width, bounding_box.height); +} |