PIKApp/app/operations/pikaoperationbuffersourceva...

312 lines
12 KiB
C

/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* pikaoperationbuffersourcevalidate.c
* Copyright (C) 2017 Ell
*
* 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 <cairo.h>
#include <gegl-plugin.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "operations-types.h"
#include "gegl/pikatilehandlervalidate.h"
#include "pikaoperationbuffersourcevalidate.h"
enum
{
PROP_0,
PROP_BUFFER
};
static void pika_operation_buffer_source_validate_dispose (GObject *object);
static void pika_operation_buffer_source_validate_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void pika_operation_buffer_source_validate_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static GeglRectangle pika_operation_buffer_source_validate_get_bounding_box (GeglOperation *operation);
static void pika_operation_buffer_source_validate_prepare (GeglOperation *operation);
static gboolean pika_operation_buffer_source_validate_process (GeglOperation *operation,
GeglOperationContext *context,
const gchar *output_pad,
const GeglRectangle *result,
gint level);
static void pika_operation_buffer_source_validate_invalidate (gpointer object,
const GeglRectangle *rect,
PikaOperationBufferSourceValidate *buffer_source_validate);
G_DEFINE_TYPE (PikaOperationBufferSourceValidate, pika_operation_buffer_source_validate,
GEGL_TYPE_OPERATION_SOURCE)
#define parent_class pika_operation_buffer_source_validate_parent_class
static void
pika_operation_buffer_source_validate_class_init (PikaOperationBufferSourceValidateClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
object_class->dispose = pika_operation_buffer_source_validate_dispose;
object_class->set_property = pika_operation_buffer_source_validate_set_property;
object_class->get_property = pika_operation_buffer_source_validate_get_property;
operation_class->get_bounding_box = pika_operation_buffer_source_validate_get_bounding_box;
operation_class->prepare = pika_operation_buffer_source_validate_prepare;
operation_class->process = pika_operation_buffer_source_validate_process;
operation_class->threaded = FALSE;
operation_class->cache_policy = GEGL_CACHE_POLICY_NEVER;
gegl_operation_class_set_keys (operation_class,
"name", "pika:buffer-source-validate",
"categories", "pika",
"description", "PIKA Buffer-Source Validate operation",
NULL);
g_object_class_install_property (object_class, PROP_BUFFER,
g_param_spec_object ("buffer",
"Buffer",
"Input buffer",
GEGL_TYPE_BUFFER,
G_PARAM_READWRITE));
}
static void
pika_operation_buffer_source_validate_init (PikaOperationBufferSourceValidate *self)
{
}
static void
pika_operation_buffer_source_validate_dispose (GObject *object)
{
PikaOperationBufferSourceValidate *buffer_source_validate = PIKA_OPERATION_BUFFER_SOURCE_VALIDATE (object);
if (buffer_source_validate->buffer)
{
PikaTileHandlerValidate *validate_handler;
validate_handler = pika_tile_handler_validate_get_assigned (
buffer_source_validate->buffer);
if (validate_handler)
{
g_signal_connect (
validate_handler,
"invalidated",
G_CALLBACK (pika_operation_buffer_source_validate_invalidate),
buffer_source_validate);
}
g_signal_handlers_disconnect_by_func (
buffer_source_validate->buffer,
pika_operation_buffer_source_validate_invalidate,
buffer_source_validate);
g_clear_object (&buffer_source_validate->buffer);
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
pika_operation_buffer_source_validate_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
PikaOperationBufferSourceValidate *buffer_source_validate = PIKA_OPERATION_BUFFER_SOURCE_VALIDATE (object);
switch (property_id)
{
case PROP_BUFFER:
g_value_set_object (value, buffer_source_validate->buffer);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
pika_operation_buffer_source_validate_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
PikaOperationBufferSourceValidate *buffer_source_validate = PIKA_OPERATION_BUFFER_SOURCE_VALIDATE (object);
switch (property_id)
{
case PROP_BUFFER:
{
if (buffer_source_validate->buffer)
{
PikaTileHandlerValidate *validate_handler;
validate_handler = pika_tile_handler_validate_get_assigned (
buffer_source_validate->buffer);
pika_operation_buffer_source_validate_invalidate (
buffer_source_validate->buffer,
gegl_buffer_get_extent (buffer_source_validate->buffer),
buffer_source_validate);
g_signal_handlers_disconnect_by_func (
buffer_source_validate->buffer,
pika_operation_buffer_source_validate_invalidate,
buffer_source_validate);
if (validate_handler)
{
g_signal_handlers_disconnect_by_func (
validate_handler,
pika_operation_buffer_source_validate_invalidate,
buffer_source_validate);
}
g_clear_object (&buffer_source_validate->buffer);
}
buffer_source_validate->buffer = g_value_dup_object (value);
if (buffer_source_validate->buffer)
{
PikaTileHandlerValidate *validate_handler;
validate_handler = pika_tile_handler_validate_get_assigned (
buffer_source_validate->buffer);
if (validate_handler)
{
g_signal_connect (
validate_handler,
"invalidated",
G_CALLBACK (pika_operation_buffer_source_validate_invalidate),
buffer_source_validate);
}
gegl_buffer_signal_connect (
buffer_source_validate->buffer,
"changed",
G_CALLBACK (pika_operation_buffer_source_validate_invalidate),
buffer_source_validate);
pika_operation_buffer_source_validate_invalidate (
buffer_source_validate->buffer,
gegl_buffer_get_extent (buffer_source_validate->buffer),
buffer_source_validate);
}
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static GeglRectangle
pika_operation_buffer_source_validate_get_bounding_box (GeglOperation *operation)
{
PikaOperationBufferSourceValidate *buffer_source_validate = PIKA_OPERATION_BUFFER_SOURCE_VALIDATE (operation);
GeglRectangle result = {};
if (buffer_source_validate->buffer)
result = *gegl_buffer_get_extent (buffer_source_validate->buffer);
return result;
}
static void
pika_operation_buffer_source_validate_prepare (GeglOperation *operation)
{
PikaOperationBufferSourceValidate *buffer_source_validate = PIKA_OPERATION_BUFFER_SOURCE_VALIDATE (operation);
const Babl *format = NULL;
if (buffer_source_validate->buffer)
format = gegl_buffer_get_format (buffer_source_validate->buffer);
gegl_operation_set_format (operation, "output", format);
}
static gboolean
pika_operation_buffer_source_validate_process (GeglOperation *operation,
GeglOperationContext *context,
const gchar *output_pad,
const GeglRectangle *result,
gint level)
{
PikaOperationBufferSourceValidate *buffer_source_validate = PIKA_OPERATION_BUFFER_SOURCE_VALIDATE (operation);
GeglBuffer *buffer = buffer_source_validate->buffer;
if (buffer)
{
PikaTileHandlerValidate *validate_handler;
validate_handler = pika_tile_handler_validate_get_assigned (buffer);
if (validate_handler)
{
GeglRectangle rect;
/* align the rectangle to the tile grid */
gegl_rectangle_align_to_buffer (
&rect, result, buffer_source_validate->buffer,
GEGL_RECTANGLE_ALIGNMENT_SUPERSET);
pika_tile_handler_validate_validate (validate_handler,
buffer_source_validate->buffer,
&rect,
TRUE, FALSE);
}
gegl_operation_context_set_object (context, "output", G_OBJECT (buffer));
gegl_object_set_has_forked (G_OBJECT (buffer));
}
return TRUE;
}
static void
pika_operation_buffer_source_validate_invalidate (gpointer object,
const GeglRectangle *rect,
PikaOperationBufferSourceValidate *buffer_source_validate)
{
gegl_operation_invalidate (GEGL_OPERATION (buffer_source_validate),
rect, FALSE);
}