345 lines
14 KiB
C
345 lines
14 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimpoperationbuffersourcevalidate.c
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* Copyright (C) 2017 Ell
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <cairo.h>
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#include <gegl-plugin.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "libgimpconfig/gimpconfig.h"
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#include "libgimpmath/gimpmath.h"
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#include "operations-types.h"
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#include "gegl/gimptilehandlervalidate.h"
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#include "gimpoperationbuffersourcevalidate.h"
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enum
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{
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PROP_0,
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PROP_BUFFER
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};
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static void gimp_operation_buffer_source_validate_dispose (GObject *object);
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static void gimp_operation_buffer_source_validate_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static void gimp_operation_buffer_source_validate_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static GeglRectangle gimp_operation_buffer_source_validate_get_bounding_box (GeglOperation *operation);
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static void gimp_operation_buffer_source_validate_prepare (GeglOperation *operation);
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static gboolean gimp_operation_buffer_source_validate_process (GeglOperation *operation,
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GeglOperationContext *context,
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const gchar *output_pad,
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const GeglRectangle *result,
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gint level);
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static void gimp_operation_buffer_source_validate_buffer_changed (GeglBuffer *buffer,
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const GeglRectangle *rect,
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gpointer data);
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G_DEFINE_TYPE (GimpOperationBufferSourceValidate, gimp_operation_buffer_source_validate,
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GEGL_TYPE_OPERATION_SOURCE)
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#define parent_class gimp_operation_buffer_source_validate_parent_class
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static void
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gimp_operation_buffer_source_validate_class_init (GimpOperationBufferSourceValidateClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
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object_class->dispose = gimp_operation_buffer_source_validate_dispose;
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object_class->set_property = gimp_operation_buffer_source_validate_set_property;
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object_class->get_property = gimp_operation_buffer_source_validate_get_property;
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operation_class->get_bounding_box = gimp_operation_buffer_source_validate_get_bounding_box;
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operation_class->prepare = gimp_operation_buffer_source_validate_prepare;
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operation_class->process = gimp_operation_buffer_source_validate_process;
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operation_class->threaded = FALSE;
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operation_class->no_cache = TRUE;
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gegl_operation_class_set_keys (operation_class,
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"name", "gimp:buffer-source-validate",
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"categories", "gimp",
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"description", "GIMP Buffer-Source Validate operation",
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NULL);
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g_object_class_install_property (object_class, PROP_BUFFER,
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g_param_spec_object ("buffer",
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"Buffer",
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"Input buffer",
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GEGL_TYPE_BUFFER,
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G_PARAM_READWRITE));
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}
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static void
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gimp_operation_buffer_source_validate_init (GimpOperationBufferSourceValidate *self)
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{
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}
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static void
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gimp_operation_buffer_source_validate_dispose (GObject *object)
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{
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GimpOperationBufferSourceValidate *buffer_source_validate = GIMP_OPERATION_BUFFER_SOURCE_VALIDATE (object);
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if (buffer_source_validate->buffer)
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{
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g_signal_handlers_disconnect_by_func (
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buffer_source_validate->buffer,
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gimp_operation_buffer_source_validate_buffer_changed,
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buffer_source_validate);
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g_clear_object (&buffer_source_validate->buffer);
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}
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static void
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gimp_operation_buffer_source_validate_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GimpOperationBufferSourceValidate *buffer_source_validate = GIMP_OPERATION_BUFFER_SOURCE_VALIDATE (object);
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switch (property_id)
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{
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case PROP_BUFFER:
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g_value_set_object (value, buffer_source_validate->buffer);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gimp_operation_buffer_source_validate_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GimpOperationBufferSourceValidate *buffer_source_validate = GIMP_OPERATION_BUFFER_SOURCE_VALIDATE (object);
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switch (property_id)
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{
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case PROP_BUFFER:
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{
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if (buffer_source_validate->buffer)
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{
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gimp_operation_buffer_source_validate_buffer_changed (
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buffer_source_validate->buffer,
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gegl_buffer_get_extent (buffer_source_validate->buffer),
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buffer_source_validate);
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g_signal_handlers_disconnect_by_func (
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buffer_source_validate->buffer,
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G_CALLBACK (gimp_operation_buffer_source_validate_buffer_changed),
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buffer_source_validate);
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g_clear_object (&buffer_source_validate->buffer);
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}
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buffer_source_validate->buffer = g_value_dup_object (value);
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if (buffer_source_validate->buffer)
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{
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gegl_buffer_signal_connect (
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buffer_source_validate->buffer,
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"changed",
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G_CALLBACK (gimp_operation_buffer_source_validate_buffer_changed),
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buffer_source_validate);
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gimp_operation_buffer_source_validate_buffer_changed (
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buffer_source_validate->buffer,
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gegl_buffer_get_extent (buffer_source_validate->buffer),
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buffer_source_validate);
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}
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static GeglRectangle
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gimp_operation_buffer_source_validate_get_bounding_box (GeglOperation *operation)
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{
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GimpOperationBufferSourceValidate *buffer_source_validate = GIMP_OPERATION_BUFFER_SOURCE_VALIDATE (operation);
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GeglRectangle result = {};
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if (buffer_source_validate->buffer)
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result = *gegl_buffer_get_extent (buffer_source_validate->buffer);
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return result;
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}
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static void
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gimp_operation_buffer_source_validate_prepare (GeglOperation *operation)
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{
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GimpOperationBufferSourceValidate *buffer_source_validate = GIMP_OPERATION_BUFFER_SOURCE_VALIDATE (operation);
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const Babl *format = NULL;
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if (buffer_source_validate->buffer)
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format = gegl_buffer_get_format (buffer_source_validate->buffer);
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gegl_operation_set_format (operation, "output", format);
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}
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static gboolean
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gimp_operation_buffer_source_validate_process (GeglOperation *operation,
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GeglOperationContext *context,
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const gchar *output_pad,
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const GeglRectangle *result,
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gint level)
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{
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GimpOperationBufferSourceValidate *buffer_source_validate = GIMP_OPERATION_BUFFER_SOURCE_VALIDATE (operation);
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GeglBuffer *buffer = buffer_source_validate->buffer;
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if (buffer)
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{
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GimpTileHandlerValidate *validate_handler;
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validate_handler = gimp_tile_handler_validate_get_assigned (buffer);
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if (validate_handler)
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{
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gint n_threads;
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g_object_get (gegl_config (),
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"threads", &n_threads,
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NULL);
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/* the main reason to validate the buffer during processing is to
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* avoid threading issues. skip validation if not using
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* multithreading.
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*/
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if (n_threads > 1)
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{
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gint shift_x;
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gint shift_y;
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gint tile_width;
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gint tile_height;
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cairo_rectangle_int_t rect;
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cairo_region_overlap_t overlap;
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g_object_get (buffer_source_validate->buffer,
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"shift-x", &shift_x,
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"shift-y", &shift_y,
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"tile-width", &tile_width,
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"tile-height", &tile_height,
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NULL);
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/* align the rectangle to the tile grid */
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rect.x = (gint) floor ((gdouble) (result->x + shift_x) / tile_width) * tile_width;
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rect.y = (gint) floor ((gdouble) (result->y + shift_y) / tile_height) * tile_height;
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rect.width = (gint) ceil ((gdouble) (result->x + result->width + shift_x) / tile_width) * tile_width - rect.x;
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rect.height = (gint) ceil ((gdouble) (result->y + result->height + shift_y) / tile_height) * tile_height - rect.y;
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/* check if the rectangle interescts with the dirty region */
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overlap = cairo_region_contains_rectangle (validate_handler->dirty_region,
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&rect);
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if (overlap != CAIRO_REGION_OVERLAP_OUT)
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{
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GeglBufferIterator *iter;
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/* if the rectangle is not entirely within the dirty
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* region ...
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*/
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if (overlap == CAIRO_REGION_OVERLAP_PART)
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{
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cairo_region_t *region;
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cairo_rectangle_int_t intersection;
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/* ... intersect it with region and use the result's
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* bounds
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*/
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region = cairo_region_copy (validate_handler->dirty_region);
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cairo_region_intersect_rectangle (region, &rect);
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cairo_region_get_extents (region, &intersection);
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cairo_region_destroy (region);
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/* realign the rectangle to the tile grid */
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rect.x = (gint) floor ((gdouble) (intersection.x ) / tile_width) * tile_width;
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rect.y = (gint) floor ((gdouble) (intersection.y ) / tile_height) * tile_height;
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rect.width = (gint) ceil ((gdouble) (intersection.x + intersection.width ) / tile_width) * tile_width - rect.x;
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rect.height = (gint) ceil ((gdouble) (intersection.y + intersection.height) / tile_height) * tile_height - rect.y;
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}
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rect.x -= shift_x;
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rect.y -= shift_y;
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/* iterate over the rectangle -- this implicitly causes
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* validation
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*/
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iter = gegl_buffer_iterator_new (buffer,
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GEGL_RECTANGLE (rect.x,
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rect.y,
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rect.width,
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rect.height),
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level, NULL,
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GEGL_BUFFER_READ,
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GEGL_ABYSS_NONE);
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while (gegl_buffer_iterator_next (iter));
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}
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}
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}
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gegl_operation_context_set_object (context, "output", G_OBJECT (buffer));
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gegl_object_set_has_forked (G_OBJECT (buffer));
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}
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return TRUE;
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}
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static void
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gimp_operation_buffer_source_validate_buffer_changed (GeglBuffer *buffer,
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const GeglRectangle *rect,
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gpointer data)
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{
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GimpOperationBufferSourceValidate *buffer_source_validate = GIMP_OPERATION_BUFFER_SOURCE_VALIDATE (data);
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gegl_operation_invalidate (GEGL_OPERATION (buffer_source_validate),
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rect, FALSE);
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}
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