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-rw-r--r--plug-ins/common/crop-zealous.c326
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diff --git a/plug-ins/common/crop-zealous.c b/plug-ins/common/crop-zealous.c
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+++ b/plug-ins/common/crop-zealous.c
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+/*
+ * ZealousCrop plug-in version 1.00
+ * by Adam D. Moss <adam@foxbox.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 <libgimp/gimp.h>
+
+#include "libgimp/stdplugins-intl.h"
+
+#define PLUG_IN_PROC "plug-in-zealouscrop"
+
+#define EPSILON (1e-5)
+#define FLOAT_IS_ZERO(value) (value > -EPSILON && value < EPSILON)
+#define FLOAT_EQUAL(v1, v2) ((v1 - v2) > -EPSILON && (v1 - v2) < EPSILON)
+
+/* Declare local functions. */
+
+static void query (void);
+static void run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals);
+
+static inline gboolean colors_equal (const gfloat *col1,
+ const gfloat *col2,
+ gint components,
+ gboolean has_alpha);
+static void do_zcrop (gint32 drawable_id,
+ gint32 image_id);
+
+const GimpPlugInInfo PLUG_IN_INFO =
+{
+ NULL, /* init_proc */
+ NULL, /* quit_proc */
+ query, /* query_proc */
+ run, /* run_proc */
+};
+
+
+MAIN ()
+
+static void
+query (void)
+{
+ static const GimpParamDef args[] =
+ {
+ { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
+ { GIMP_PDB_IMAGE, "image", "Input image" },
+ { GIMP_PDB_DRAWABLE, "drawable", "Input drawable" }
+ };
+
+ gimp_install_procedure (PLUG_IN_PROC,
+ N_("Autocrop unused space from edges and middle"),
+ "",
+ "Adam D. Moss",
+ "Adam D. Moss",
+ "1997",
+ N_("_Zealous Crop"),
+ "RGB*, GRAY*, INDEXED*",
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (args), 0,
+ args, NULL);
+
+ gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Image/Crop");
+}
+
+static void
+run (const gchar *name,
+ gint n_params,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals)
+{
+ static GimpParam values[1];
+ GimpRunMode run_mode;
+ GimpPDBStatusType status = GIMP_PDB_SUCCESS;
+ gint32 drawable_id;
+ gint32 image_id;
+
+ INIT_I18N ();
+ gegl_init (NULL, NULL);
+
+ *nreturn_vals = 1;
+ *return_vals = values;
+
+ run_mode = param[0].data.d_int32;
+
+ if (run_mode == GIMP_RUN_NONINTERACTIVE)
+ {
+ if (n_params != 3)
+ {
+ status = GIMP_PDB_CALLING_ERROR;
+ }
+ }
+
+ if (status == GIMP_PDB_SUCCESS)
+ {
+ /* Get the specified drawable */
+ image_id = param[1].data.d_int32;
+ drawable_id = param[2].data.d_int32;
+
+ /* Make sure that the drawable is gray or RGB or indexed */
+ if (gimp_drawable_is_rgb (drawable_id) ||
+ gimp_drawable_is_gray (drawable_id) ||
+ gimp_drawable_is_indexed (drawable_id))
+ {
+ gimp_progress_init (_("Zealous cropping"));
+
+ do_zcrop (drawable_id, image_id);
+
+ if (run_mode != GIMP_RUN_NONINTERACTIVE)
+ gimp_displays_flush ();
+ }
+ else
+ {
+ status = GIMP_PDB_EXECUTION_ERROR;
+ }
+ }
+
+ values[0].type = GIMP_PDB_STATUS;
+ values[0].data.d_status = status;
+
+ gegl_exit ();
+}
+
+static inline gboolean
+colors_equal (const gfloat *col1,
+ const gfloat *col2,
+ gint components,
+ gboolean has_alpha)
+{
+ if (has_alpha &&
+ FLOAT_IS_ZERO (col1[components - 1]) &&
+ FLOAT_IS_ZERO (col2[components - 1]))
+ {
+ return TRUE;
+ }
+ else
+ {
+ gint b;
+
+ for (b = 0; b < components; b++)
+ {
+ if (! FLOAT_EQUAL (col1[b], col2[b]))
+ return FALSE;
+ }
+
+ return TRUE;
+ }
+}
+
+static void
+do_zcrop (gint32 drawable_id,
+ gint32 image_id)
+{
+ GeglBuffer *drawable_buffer;
+ GeglBuffer *shadow_buffer;
+ gfloat *linear_buf;
+ const Babl *format;
+
+ gint x, y, width, height;
+ gint components;
+ gint8 *killrows;
+ gint8 *killcols;
+ gint32 livingrows, livingcols, destrow, destcol;
+ gint32 selection_copy_id;
+ gboolean has_alpha;
+
+ drawable_buffer = gimp_drawable_get_buffer (drawable_id);
+ shadow_buffer = gimp_drawable_get_shadow_buffer (drawable_id);
+
+ width = gegl_buffer_get_width (drawable_buffer);
+ height = gegl_buffer_get_height (drawable_buffer);
+ has_alpha = gimp_drawable_has_alpha (drawable_id);
+
+ if (has_alpha)
+ format = babl_format ("R'G'B'A float");
+ else
+ format = babl_format ("R'G'B' float");
+
+ components = babl_format_get_n_components (format);
+
+ killrows = g_new (gint8, height);
+ killcols = g_new (gint8, width);
+
+ linear_buf = g_new (gfloat, (width > height ? width : height) * components);
+
+ /* search which rows to remove */
+
+ livingrows = 0;
+ for (y = 0; y < height; y++)
+ {
+ gegl_buffer_get (drawable_buffer, GEGL_RECTANGLE (0, y, width, 1),
+ 1.0, format, linear_buf,
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+
+ killrows[y] = TRUE;
+
+ for (x = components; x < width * components; x += components)
+ {
+ if (! colors_equal (linear_buf, &linear_buf[x], components, has_alpha))
+ {
+ livingrows++;
+ killrows[y] = FALSE;
+ break;
+ }
+ }
+ }
+
+ gimp_progress_update (0.25);
+
+ /* search which columns to remove */
+
+ livingcols = 0;
+ for (x = 0; x < width; x++)
+ {
+ gegl_buffer_get (drawable_buffer, GEGL_RECTANGLE (x, 0, 1, height),
+ 1.0, format, linear_buf,
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+
+ killcols[x] = TRUE;
+
+ for (y = components; y < height * components; y += components)
+ {
+ if (! colors_equal (linear_buf, &linear_buf[y], components, has_alpha))
+ {
+ livingcols++;
+ killcols[x] = FALSE;
+ break;
+ }
+ }
+ }
+
+ gimp_progress_update (0.5);
+
+ if ((livingcols == 0 || livingrows == 0) ||
+ (livingcols == width && livingrows == height))
+ {
+ g_message (_("Nothing to crop."));
+
+ g_object_unref (shadow_buffer);
+ g_object_unref (drawable_buffer);
+
+ g_free (linear_buf);
+ g_free (killrows);
+ g_free (killcols);
+ return;
+ }
+
+ /* restitute living rows */
+
+ destrow = 0;
+ for (y = 0; y < height; y++)
+ {
+ if (!killrows[y])
+ {
+ gegl_buffer_copy (drawable_buffer,
+ GEGL_RECTANGLE (0, y, width, 1),
+ GEGL_ABYSS_NONE,
+ shadow_buffer,
+ GEGL_RECTANGLE (0, destrow, width, 1));
+
+ destrow++;
+ }
+ }
+
+ gimp_progress_update (0.75);
+
+ /* restitute living columns */
+
+ destcol = 0;
+ for (x = 0; x < width; x++)
+ {
+ if (!killcols[x])
+ {
+ gegl_buffer_copy (shadow_buffer,
+ GEGL_RECTANGLE (x, 0, 1, height),
+ GEGL_ABYSS_NONE,
+ shadow_buffer,
+ GEGL_RECTANGLE (destcol, 0, 1, height));
+
+ destcol++;
+ }
+ }
+
+ gimp_progress_update (1.00);
+
+ gimp_image_undo_group_start (image_id);
+
+ selection_copy_id = gimp_selection_save (image_id);
+ gimp_selection_none (image_id);
+
+ gegl_buffer_flush (shadow_buffer);
+ gimp_drawable_merge_shadow (drawable_id, TRUE);
+ gegl_buffer_flush (drawable_buffer);
+
+ gimp_image_select_item (image_id, GIMP_CHANNEL_OP_REPLACE, selection_copy_id);
+ gimp_image_remove_channel (image_id, selection_copy_id);
+
+ gimp_image_crop (image_id, livingcols, livingrows, 0, 0);
+
+ gimp_image_undo_group_end (image_id);
+
+ g_object_unref (shadow_buffer);
+ g_object_unref (drawable_buffer);
+
+ g_free (linear_buf);
+ g_free (killrows);
+ g_free (killcols);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-18 23:36:29 +0000