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gimp/app/gegl/gimp-gegl-utils.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimp-gegl-utils.h
* Copyright (C) 2007 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 <string.h>
#include <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include <gegl-plugin.h>
#include "libgimpcolor/gimpcolor.h"
#include "gimp-gegl-types.h"
#include "core/gimppattern.h"
#include "core/gimpprogress.h"
#include "gimp-babl.h"
#include "gimp-gegl-loops.h"
#include "gimp-gegl-utils.h"
/* local function prototypes */
static gboolean gimp_gegl_op_blacklisted (const gchar *name,
const gchar *categories);
static GList * gimp_gegl_get_op_subclasses (GType type,
GList *classes);
static gint gimp_gegl_compare_op_names (GeglOperationClass *a,
GeglOperationClass *b);
/* public functions */
GList *
gimp_gegl_get_op_classes (void)
{
GList *operations;
operations = gimp_gegl_get_op_subclasses (GEGL_TYPE_OPERATION, NULL);
operations = g_list_sort (operations,
(GCompareFunc)
gimp_gegl_compare_op_names);
return operations;
}
GType
gimp_gegl_get_op_enum_type (const gchar *operation,
const gchar *property)
{
GeglNode *node;
GObject *op;
GParamSpec *pspec;
g_return_val_if_fail (operation != NULL, G_TYPE_NONE);
g_return_val_if_fail (property != NULL, G_TYPE_NONE);
node = g_object_new (GEGL_TYPE_NODE,
"operation", operation,
NULL);
g_object_get (node, "gegl-operation", &op, NULL);
g_object_unref (node);
g_return_val_if_fail (op != NULL, G_TYPE_NONE);
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (op), property);
g_return_val_if_fail (G_IS_PARAM_SPEC_ENUM (pspec), G_TYPE_NONE);
g_object_unref (op);
return G_TYPE_FROM_CLASS (G_PARAM_SPEC_ENUM (pspec)->enum_class);
}
static void
gimp_gegl_progress_callback (GObject *object,
gdouble value,
GimpProgress *progress)
{
if (value == 0.0)
{
const gchar *text = g_object_get_data (object, "gimp-progress-text");
if (gimp_progress_is_active (progress))
gimp_progress_set_text (progress, "%s", text);
else
gimp_progress_start (progress, FALSE, "%s", text);
}
else
{
gimp_progress_set_value (progress, value);
if (value == 1.0)
gimp_progress_end (progress);
}
}
void
gimp_gegl_progress_connect (GeglNode *node,
GimpProgress *progress,
const gchar *text)
{
g_return_if_fail (GEGL_IS_NODE (node));
g_return_if_fail (GIMP_IS_PROGRESS (progress));
g_return_if_fail (text != NULL);
g_signal_connect_object (node, "progress",
G_CALLBACK (gimp_gegl_progress_callback),
progress, 0);
g_object_set_data_full (G_OBJECT (node),
"gimp-progress-text", g_strdup (text),
(GDestroyNotify) g_free);
}
void
gimp_gegl_progress_disconnect (GeglNode *node,
GimpProgress *progress)
{
g_return_if_fail (GEGL_IS_NODE (node));
g_return_if_fail (GIMP_IS_PROGRESS (progress));
g_signal_handlers_disconnect_by_func (node,
gimp_gegl_progress_callback,
progress);
}
gboolean
gimp_gegl_node_is_source_operation (GeglNode *node)
{
GeglOperation *operation;
g_return_val_if_fail (GEGL_IS_NODE (node), FALSE);
operation = gegl_node_get_gegl_operation (node);
if (! operation)
return FALSE;
return GEGL_IS_OPERATION_SOURCE (operation);
}
gboolean
gimp_gegl_node_is_point_operation (GeglNode *node)
{
GeglOperation *operation;
g_return_val_if_fail (GEGL_IS_NODE (node), FALSE);
operation = gegl_node_get_gegl_operation (node);
if (! operation)
return FALSE;
return GEGL_IS_OPERATION_POINT_RENDER (operation) ||
GEGL_IS_OPERATION_POINT_FILTER (operation) ||
GEGL_IS_OPERATION_POINT_COMPOSER (operation) ||
GEGL_IS_OPERATION_POINT_COMPOSER3 (operation);
}
gboolean
gimp_gegl_node_is_area_filter_operation (GeglNode *node)
{
GeglOperation *operation;
g_return_val_if_fail (GEGL_IS_NODE (node), FALSE);
operation = gegl_node_get_gegl_operation (node);
if (! operation)
return FALSE;
return GEGL_IS_OPERATION_AREA_FILTER (operation) ||
/* be conservative and return TRUE for meta ops, since they may
* involve an area op
*/
GEGL_IS_OPERATION_META (operation);
}
const gchar *
gimp_gegl_node_get_key (GeglNode *node,
const gchar *key)
{
const gchar *operation_name;
g_return_val_if_fail (GEGL_IS_NODE (node), NULL);
operation_name = gegl_node_get_operation (node);
if (operation_name)
return gegl_operation_get_key (operation_name, key);
else
return NULL;
}
gboolean
gimp_gegl_node_has_key (GeglNode *node,
const gchar *key)
{
return gimp_gegl_node_get_key (node, key) != NULL;
}
const Babl *
gimp_gegl_node_get_format (GeglNode *node,
const gchar *pad_name)
{
GeglOperation *op;
const Babl *format = NULL;
g_return_val_if_fail (GEGL_IS_NODE (node), NULL);
g_return_val_if_fail (pad_name != NULL, NULL);
g_object_get (node, "gegl-operation", &op, NULL);
if (op)
{
format = gegl_operation_get_format (op, pad_name);
g_object_unref (op);
}
if (! format)
format = babl_format ("RGBA float");
return format;
}
void
gimp_gegl_node_set_underlying_operation (GeglNode *node,
GeglNode *operation)
{
g_return_if_fail (GEGL_IS_NODE (node));
g_return_if_fail (operation == NULL || GEGL_IS_NODE (operation));
g_object_set_data (G_OBJECT (node),
"gimp-gegl-node-underlying-operation", operation);
}
GeglNode *
gimp_gegl_node_get_underlying_operation (GeglNode *node)
{
GeglNode *operation;
g_return_val_if_fail (GEGL_IS_NODE (node), NULL);
operation = g_object_get_data (G_OBJECT (node),
"gimp-gegl-node-underlying-operation");
if (operation)
return gimp_gegl_node_get_underlying_operation (operation);
else
return node;
}
gboolean
gimp_gegl_param_spec_has_key (GParamSpec *pspec,
const gchar *key,
const gchar *value)
{
const gchar *v = gegl_param_spec_get_property_key (pspec, key);
if (v && ! strcmp (v, value))
return TRUE;
return FALSE;
}
GeglBuffer *
gimp_gegl_buffer_dup (GeglBuffer *buffer)
{
GeglBuffer *new_buffer;
const GeglRectangle *extent;
const GeglRectangle *abyss;
GeglRectangle rect;
gint shift_x;
gint shift_y;
gint tile_width;
gint tile_height;
g_return_val_if_fail (GEGL_IS_BUFFER (buffer), NULL);
extent = gegl_buffer_get_extent (buffer);
abyss = gegl_buffer_get_abyss (buffer);
g_object_get (buffer,
"shift-x", &shift_x,
"shift-y", &shift_y,
"tile-width", &tile_width,
"tile-height", &tile_height,
NULL);
new_buffer = g_object_new (GEGL_TYPE_BUFFER,
"format", gegl_buffer_get_format (buffer),
"x", extent->x,
"y", extent->y,
"width", extent->width,
"height", extent->height,
"abyss-x", abyss->x,
"abyss-y", abyss->y,
"abyss-width", abyss->width,
"abyss-height", abyss->height,
"shift-x", shift_x,
"shift-y", shift_y,
"tile-width", tile_width,
"tile-height", tile_height,
NULL);
gegl_rectangle_align_to_buffer (&rect, extent, buffer,
GEGL_RECTANGLE_ALIGNMENT_SUPERSET);
gimp_gegl_buffer_copy (buffer, &rect, GEGL_ABYSS_NONE,
new_buffer, &rect);
return new_buffer;
}
GeglBuffer *
gimp_gegl_buffer_resize (GeglBuffer *buffer,
gint new_width,
gint new_height,
gint offset_x,
gint offset_y,
GeglColor *color,
GimpPattern *pattern,
gint pattern_offset_x,
gint pattern_offset_y)
{
GeglBuffer *new_buffer;
gboolean intersect;
GeglRectangle copy_rect;
const GeglRectangle *extent;
const Babl *format;
g_return_val_if_fail (GEGL_IS_BUFFER (buffer), NULL);
extent = gegl_buffer_get_extent (buffer);
format = gegl_buffer_get_format (buffer);
new_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, new_width, new_height),
format);
intersect = gegl_rectangle_intersect (&copy_rect,
GEGL_RECTANGLE (0, 0, extent->width,
extent->height),
GEGL_RECTANGLE (offset_x, offset_y,
new_width, new_height));
if (! intersect ||
copy_rect.width != new_width ||
copy_rect.height != new_height)
{
/* Clear the new buffer if needed and color/pattern is given */
if (pattern)
{
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
GimpColorProfile *src_profile;
GimpColorProfile *dest_profile;
src_buffer = gimp_pattern_create_buffer (pattern);
src_profile = gimp_babl_format_get_color_profile (
gegl_buffer_get_format (src_buffer));
dest_profile = gimp_babl_format_get_color_profile (
gegl_buffer_get_format (new_buffer));
if (gimp_color_transform_can_gegl_copy (src_profile, dest_profile))
{
dest_buffer = g_object_ref (src_buffer);
}
else
{
dest_buffer = gegl_buffer_new (gegl_buffer_get_extent (src_buffer),
gegl_buffer_get_format (new_buffer));
gimp_gegl_convert_color_profile (src_buffer, NULL, src_profile,
dest_buffer, NULL, dest_profile,
GIMP_COLOR_RENDERING_INTENT_PERCEPTUAL,
TRUE, NULL);
}
g_object_unref (src_profile);
g_object_unref (dest_profile);
gegl_buffer_set_pattern (new_buffer, NULL, dest_buffer,
pattern_offset_x, pattern_offset_y);
g_object_unref (src_buffer);
g_object_unref (dest_buffer);
}
else if (color)
{
gegl_buffer_set_color (new_buffer, NULL, color);
}
}
if (intersect && copy_rect.width && copy_rect.height)
{
/* Copy the pixels in the intersection */
gimp_gegl_buffer_copy (buffer, &copy_rect, GEGL_ABYSS_NONE, new_buffer,
GEGL_RECTANGLE (copy_rect.x - offset_x,
copy_rect.y - offset_y, 0, 0));
}
return new_buffer;
}
gboolean
gimp_gegl_buffer_set_extent (GeglBuffer *buffer,
const GeglRectangle *extent)
{
GeglRectangle aligned_old_extent;
GeglRectangle aligned_extent;
GeglRectangle old_extent_rem;
GeglRectangle diff_rects[4];
gint n_diff_rects;
gint i;
g_return_val_if_fail (GEGL_IS_BUFFER (buffer), FALSE);
g_return_val_if_fail (extent != NULL, FALSE);
gegl_rectangle_align_to_buffer (&aligned_old_extent,
gegl_buffer_get_extent (buffer), buffer,
GEGL_RECTANGLE_ALIGNMENT_SUPERSET);
gegl_rectangle_align_to_buffer (&aligned_extent,
extent, buffer,
GEGL_RECTANGLE_ALIGNMENT_SUPERSET);
n_diff_rects = gegl_rectangle_subtract (diff_rects,
&aligned_old_extent,
&aligned_extent);
for (i = 0; i < n_diff_rects; i++)
gegl_buffer_clear (buffer, &diff_rects[i]);
if (gegl_rectangle_intersect (&old_extent_rem,
gegl_buffer_get_extent (buffer),
&aligned_extent))
{
n_diff_rects = gegl_rectangle_subtract (diff_rects,
&old_extent_rem,
extent);
for (i = 0; i < n_diff_rects; i++)
gegl_buffer_clear (buffer, &diff_rects[i]);
}
return gegl_buffer_set_extent (buffer, extent);
}
/* private functions */
static gboolean
gimp_gegl_op_blacklisted (const gchar *name,
const gchar *categories_str)
{
static const gchar * const category_blacklist[] =
{
"compositors",
"core",
"debug",
"display",
"hidden",
"input",
"output",
"programming",
"transform",
"video"
};
static const gchar * const name_blacklist[] =
{
/* these ops are already added to the menus via filters-actions */
"gegl:alien-map",
"gegl:antialias",
"gegl:apply-lens",
"gegl:bayer-matrix",
"gegl:bloom",
"gegl:bump-map",
"gegl:c2g",
"gegl:cartoon",
"gegl:cell-noise",
"gegl:channel-mixer",
"gegl:checkerboard",
"gegl:color",
"gegl:color-enhance",
"gegl:color-exchange",
"gegl:color-rotate",
"gegl:color-temperature",
"gegl:color-to-alpha",
"gegl:component-extract",
"gegl:convolution-matrix",
"gegl:cubism",
"gegl:deinterlace",
"gegl:difference-of-gaussians",
"gegl:diffraction-patterns",
"gegl:displace",
"gegl:distance-transform",
"gegl:dither",
"gegl:dropshadow",
"gegl:edge",
"gegl:edge-laplace",
"gegl:edge-neon",
"gegl:edge-sobel",
"gegl:emboss",
"gegl:engrave",
"gegl:exposure",
"gegl:fattal02",
"gegl:focus-blur",
"gegl:fractal-trace",
"gegl:gaussian-blur",
"gegl:gaussian-blur-selective",
"gegl:gegl",
"gegl:grid",
"gegl:high-pass",
"gegl:hue-chroma",
"gegl:illusion",
"gegl:image-gradient",
"gegl:invert-linear",
"gegl:invert-gamma",
"gegl:lens-blur",
"gegl:lens-distortion",
"gegl:lens-flare",
"gegl:linear-sinusoid",
"gegl:long-shadow",
"gegl:mantiuk06",
"gegl:maze",
"gegl:mean-curvature-blur",
"gegl:median-blur",
"gegl:mirrors",
"gegl:mono-mixer",
"gegl:mosaic",
"gegl:motion-blur-circular",
"gegl:motion-blur-linear",
"gegl:motion-blur-zoom",
"gegl:newsprint",
"gegl:noise-cie-lch",
"gegl:noise-hsv",
"gegl:noise-hurl",
"gegl:noise-pick",
"gegl:noise-reduction",
"gegl:noise-rgb",
"gegl:noise-slur",
"gegl:noise-solid",
"gegl:noise-spread",
"gegl:normal-map",
"gegl:oilify",
"gegl:panorama-projection",
"gegl:perlin-noise",
"gegl:photocopy",
"gegl:pixelize",
"gegl:plasma",
"gegl:polar-coordinates",
"gegl:recursive-transform",
"gegl:red-eye-removal",
"gegl:reinhard05",
"gegl:rgb-clip",
"gegl:ripple",
"gegl:saturation",
"gegl:sepia",
"gegl:shadows-highlights",
"gegl:shift",
"gegl:simplex-noise",
"gegl:sinus",
"gegl:slic",
"gegl:snn-mean",
"gegl:softglow",
"gegl:spherize",
"gegl:spiral",
"gegl:stereographic-projection",
"gegl:stretch-contrast",
"gegl:stretch-contrast-hsv",
"gegl:stress",
"gegl:supernova",
"gegl:texturize-canvas",
"gegl:tile-glass",
"gegl:tile-paper",
"gegl:tile-seamless",
"gegl:unsharp-mask",
"gegl:value-invert",
"gegl:value-propagate",
"gegl:variable-blur",
"gegl:video-degradation",
"gegl:vignette",
"gegl:waterpixels",
"gegl:wavelet-blur",
"gegl:waves",
"gegl:whirl-pinch",
"gegl:wind",
/* these ops are blacklisted for other reasons */
"gegl:contrast-curve",
"gegl:convert-format", /* pointless */
"gegl:ditto", /* pointless */
"gegl:fill-path",
"gegl:gray", /* we use gimp's op */
"gegl:hstack", /* pointless */
"gegl:introspect", /* pointless */
"gegl:layer", /* we use gimp's ops */
"gegl:lcms-from-profile", /* not usable here */
"gegl:linear-gradient", /* we use the blend tool */
"gegl:map-absolute", /* pointless */
"gegl:map-relative", /* pointless */
"gegl:matting-global", /* used in the foreground select tool */
"gegl:matting-levin", /* used in the foreground select tool */
"gegl:opacity", /* poinless */
"gegl:path",
"gegl:posterize", /* we use gimp's op */
"gegl:radial-gradient", /* we use the blend tool */
"gegl:rectangle", /* pointless */
"gegl:seamless-clone", /* used in the seamless clone tool */
"gegl:text", /* we use gimp's text rendering */
"gegl:threshold", /* we use gimp's op */
"gegl:tile", /* pointless */
"gegl:unpremul", /* pointless */
"gegl:vector-stroke",
};
gchar **categories;
gint i;
/* Operations with no name are abstract base classes */
if (! name)
return TRUE;
/* use this flag to include all ops for testing */
if (g_getenv ("GIMP_TESTING_NO_GEGL_BLACKLIST"))
return FALSE;
if (g_str_has_prefix (name, "gimp"))
return TRUE;
for (i = 0; i < G_N_ELEMENTS (name_blacklist); i++)
{
if (! strcmp (name, name_blacklist[i]))
return TRUE;
}
if (! categories_str)
return FALSE;
categories = g_strsplit (categories_str, ":", 0);
for (i = 0; i < G_N_ELEMENTS (category_blacklist); i++)
{
gint j;
for (j = 0; categories[j]; j++)
if (! strcmp (categories[j], category_blacklist[i]))
{
g_strfreev (categories);
return TRUE;
}
}
g_strfreev (categories);
return FALSE;
}
/* Builds a GList of the class structures of all subtypes of type.
*/
static GList *
gimp_gegl_get_op_subclasses (GType type,
GList *classes)
{
GeglOperationClass *klass;
GType *ops;
const gchar *categories;
guint n_ops;
gint i;
if (! type)
return classes;
klass = GEGL_OPERATION_CLASS (g_type_class_ref (type));
ops = g_type_children (type, &n_ops);
categories = gegl_operation_class_get_key (klass, "categories");
if (! gimp_gegl_op_blacklisted (klass->name, categories))
classes = g_list_prepend (classes, klass);
for (i = 0; i < n_ops; i++)
classes = gimp_gegl_get_op_subclasses (ops[i], classes);
if (ops)
g_free (ops);
return classes;
}
static gint
gimp_gegl_compare_op_names (GeglOperationClass *a,
GeglOperationClass *b)
{
const gchar *name_a = gegl_operation_class_get_key (a, "title");
const gchar *name_b = gegl_operation_class_get_key (b, "title");
if (! name_a) name_a = a->name;
if (! name_b) name_b = b->name;
return strcmp (name_a, name_b);
}
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