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-rw-r--r--app/operations/gimpoperationcomposecrop.c329
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diff --git a/app/operations/gimpoperationcomposecrop.c b/app/operations/gimpoperationcomposecrop.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpoperationcomposecrop.c
+ * Copyright (C) 2012 Michael Natterer <mitch@gimp.org>
+ * Copyright (C) 2016 Massimo Valentini <mvalentini@src.gnome.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 <gegl.h>
+
+#include "operations-types.h"
+
+#include "gimpoperationcomposecrop.h"
+
+
+enum
+{
+ PROP_0,
+ PROP_X,
+ PROP_Y,
+ PROP_WIDTH,
+ PROP_HEIGHT
+};
+
+
+static void gimp_operation_compose_crop_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void gimp_operation_compose_crop_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+
+static void gimp_operation_compose_crop_prepare (GeglOperation *operation);
+static GeglRectangle gimp_operation_compose_crop_get_required_for_output (GeglOperation *operation,
+ const gchar *input_pad,
+ const GeglRectangle *output_roi);
+static gboolean gimp_operation_compose_crop_parent_process (GeglOperation *operation,
+ GeglOperationContext *context,
+ const gchar *output_pad,
+ const GeglRectangle *roi,
+ gint level);
+
+static gboolean gimp_operation_compose_crop_process (GeglOperation *operation,
+ void *in_buf,
+ void *aux_buf,
+ void *out_buf,
+ glong samples,
+ const GeglRectangle *roi,
+ gint level);
+
+
+G_DEFINE_TYPE (GimpOperationComposeCrop, gimp_operation_compose_crop,
+ GEGL_TYPE_OPERATION_POINT_COMPOSER)
+
+#define parent_class gimp_operation_compose_crop_parent_class
+
+
+static void
+gimp_operation_compose_crop_class_init (GimpOperationComposeCropClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
+ GeglOperationPointComposerClass *point_class = GEGL_OPERATION_POINT_COMPOSER_CLASS (klass);
+
+ object_class->set_property = gimp_operation_compose_crop_set_property;
+ object_class->get_property = gimp_operation_compose_crop_get_property;
+
+ gegl_operation_class_set_keys (operation_class,
+ "name", "gimp:compose-crop",
+ "categories", "gimp",
+ "description", "Selectively pick components from src or aux",
+ NULL);
+
+ operation_class->prepare = gimp_operation_compose_crop_prepare;
+ operation_class->get_invalidated_by_change = gimp_operation_compose_crop_get_required_for_output;
+ operation_class->get_required_for_output = gimp_operation_compose_crop_get_required_for_output;
+ operation_class->process = gimp_operation_compose_crop_parent_process;
+
+ point_class->process = gimp_operation_compose_crop_process;
+
+ g_object_class_install_property (object_class, PROP_X,
+ g_param_spec_int ("x",
+ "x",
+ "x",
+ G_MININT, G_MAXINT, 0,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+ g_object_class_install_property (object_class, PROP_Y,
+ g_param_spec_int ("y",
+ "y",
+ "y",
+ G_MININT, G_MAXINT, 0,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+ g_object_class_install_property (object_class, PROP_WIDTH,
+ g_param_spec_int ("width",
+ "width",
+ "width",
+ 0, G_MAXINT, 0,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+ g_object_class_install_property (object_class, PROP_HEIGHT,
+ g_param_spec_int ("height",
+ "height",
+ "height",
+ 0, G_MAXINT, 0,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+}
+
+static void
+gimp_operation_compose_crop_init (GimpOperationComposeCrop *self)
+{
+}
+
+static void
+gimp_operation_compose_crop_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpOperationComposeCrop *self = GIMP_OPERATION_COMPOSE_CROP (object);
+
+ switch (property_id)
+ {
+ case PROP_X:
+ g_value_set_int (value, self->rect.x);
+ break;
+ case PROP_Y:
+ g_value_set_int (value, self->rect.y);
+ break;
+ case PROP_WIDTH:
+ g_value_set_int (value, self->rect.width);
+ break;
+ case PROP_HEIGHT:
+ g_value_set_int (value, self->rect.height);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_operation_compose_crop_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpOperationComposeCrop *self = GIMP_OPERATION_COMPOSE_CROP (object);
+
+ switch (property_id)
+ {
+ case PROP_X:
+ self->rect.x = g_value_get_int (value);
+ break;
+ case PROP_Y:
+ self->rect.y = g_value_get_int (value);
+ break;
+ case PROP_WIDTH:
+ self->rect.width = g_value_get_int (value);
+ break;
+ case PROP_HEIGHT:
+ self->rect.height = g_value_get_int (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_operation_compose_crop_prepare (GeglOperation *operation)
+{
+ const Babl *input_format = gegl_operation_get_source_format (operation, "input");
+ const Babl *aux_format = gegl_operation_get_source_format (operation, "aux");
+ const Babl *format;
+
+ if (input_format)
+ {
+ if (input_format == aux_format)
+ {
+ format = input_format;
+ }
+ else
+ {
+ const Babl *model = babl_format_get_model (input_format);
+
+ if (model == babl_model ("R'G'B'A"))
+ format = babl_format_with_space ("R'G'B'A float", input_format);
+ else
+ format = babl_format_with_space ("RGBA float", input_format);
+ }
+ }
+ else
+ {
+ format = babl_format_with_space ("RGBA float", input_format);
+ }
+
+ gegl_operation_set_format (operation, "input", format);
+ gegl_operation_set_format (operation, "aux", format);
+ gegl_operation_set_format (operation, "output", format);
+}
+
+static GeglRectangle
+gimp_operation_compose_crop_get_required_for_output (GeglOperation *operation,
+ const gchar *input_pad,
+ const GeglRectangle *output_roi)
+{
+ GimpOperationComposeCrop *self = GIMP_OPERATION_COMPOSE_CROP (operation);
+ GeglRectangle result;
+
+ if (! strcmp (input_pad, "input"))
+ gegl_rectangle_intersect (&result, output_roi, &self->rect);
+ else if (! strcmp (input_pad, "aux"))
+ gegl_rectangle_subtract_bounding_box (&result, output_roi, &self->rect);
+ else
+ g_return_val_if_reached (*output_roi);
+
+ return result;
+}
+
+static gboolean
+gimp_operation_compose_crop_parent_process (GeglOperation *operation,
+ GeglOperationContext *context,
+ const gchar *output_pad,
+ const GeglRectangle *roi,
+ gint level)
+{
+ GimpOperationComposeCrop *self = GIMP_OPERATION_COMPOSE_CROP (operation);
+
+ if (gegl_rectangle_contains (&self->rect, roi))
+ {
+ GObject *input;
+
+ input = gegl_operation_context_get_object (context, "input");
+ gegl_operation_context_set_object (context, "output", input);
+
+ return TRUE;
+ }
+ else if (! gegl_rectangle_intersect (NULL, &self->rect, roi))
+ {
+ GObject *aux;
+
+ aux = gegl_operation_context_get_object (context, "aux");
+ gegl_operation_context_set_object (context, "output", aux);
+
+ return TRUE;
+ }
+
+ return GEGL_OPERATION_CLASS (parent_class)->process (operation, context,
+ output_pad, roi, level);
+}
+
+static gboolean
+gimp_operation_compose_crop_process (GeglOperation *operation,
+ void *in_buf,
+ void *aux_buf,
+ void *out_buf,
+ glong samples,
+ const GeglRectangle *roi,
+ gint level)
+{
+ GimpOperationComposeCrop *self = GIMP_OPERATION_COMPOSE_CROP (operation);
+ const Babl *format = gegl_operation_get_format (operation, "output");
+ gint bpp = babl_format_get_bytes_per_pixel (format);
+ const guchar *in = in_buf;
+ const guchar *aux = aux_buf;
+ guchar *out = out_buf;
+ gint x0, x1;
+ gint y0, y1;
+ gint y;
+
+#define COPY(src, n) \
+ do \
+ { \
+ gint size = (n) * bpp; \
+ \
+ if (src) \
+ memcpy (out, (src), size); \
+ else \
+ memset (out, 0, size); \
+ \
+ in += size; \
+ if (aux) aux += size; \
+ out += size; \
+ } \
+ while (FALSE)
+
+ x0 = CLAMP (self->rect.x, roi->x, roi->x + roi->width);
+ x1 = CLAMP (self->rect.x + self->rect.width, roi->x, roi->x + roi->width);
+
+ y0 = CLAMP (self->rect.y, roi->y, roi->y + roi->height);
+ y1 = CLAMP (self->rect.y + self->rect.height, roi->y, roi->y + roi->height);
+
+ COPY (aux, (y0 - roi->y) * roi->width);
+
+ for (y = y0; y < y1; y++)
+ {
+ COPY (aux, x0 - roi->x);
+ COPY (in, x1 - x0);
+ COPY (aux, roi->x + roi->width - x1);
+ }
+
+ COPY (aux, (roi->y + roi->height - y1) * roi->width);
+
+#undef COPY
+
+ return TRUE;
+}
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