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-rw-r--r--plug-ins/gimpressionist/gimp.c535
1 files changed, 535 insertions, 0 deletions
diff --git a/plug-ins/gimpressionist/gimp.c b/plug-ins/gimpressionist/gimp.c
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+++ b/plug-ins/gimpressionist/gimp.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * 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 <gtk/gtk.h>
+
+#include <libgimp/gimp.h>
+
+#include "ppmtool.h"
+#include "infile.h"
+#include "gimpressionist.h"
+#include "preview.h"
+#include "brush.h"
+#include "presets.h"
+#include "random.h"
+#include "orientmap.h"
+#include "size.h"
+
+
+#include "libgimp/stdplugins-intl.h"
+
+static void query (void);
+static void run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals);
+static void gimpressionist_main (void);
+
+
+const GimpPlugInInfo PLUG_IN_INFO = {
+ NULL, /* init_proc */
+ NULL, /* quit_proc */
+ query, /* query_proc */
+ run /* run_proc */
+}; /* PLUG_IN_INFO */
+
+static gint32 drawable_id;
+static ppm_t infile = {0, 0, NULL};
+static ppm_t inalpha = {0, 0, NULL};
+
+
+void
+infile_copy_to_ppm (ppm_t * p)
+{
+ if (!PPM_IS_INITED (&infile))
+ grabarea ();
+
+ ppm_copy (&infile, p);
+}
+
+void
+infile_copy_alpha_to_ppm (ppm_t * p)
+{
+ ppm_copy (&inalpha, p);
+}
+
+MAIN ()
+
+static void
+query (void)
+{
+ static const GimpParamDef args[] =
+ {
+ { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0) }" },
+ { GIMP_PDB_IMAGE, "image", "Input image" },
+ { GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
+ { GIMP_PDB_STRING, "preset", "Preset Name" },
+ };
+
+ gimp_install_procedure (PLUG_IN_PROC,
+ N_("Performs various artistic operations"),
+ "Performs various artistic operations on an image",
+ "Vidar Madsen <vidar@prosalg.no>",
+ "Vidar Madsen",
+ PLUG_IN_VERSION,
+ N_("_GIMPressionist..."),
+ "RGB*, GRAY*",
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (args), 0,
+ args, NULL);
+
+ gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Artistic");
+}
+
+static void
+gimpressionist_get_data (void)
+{
+ restore_default_values ();
+ gimp_get_data (PLUG_IN_PROC, &pcvals);
+}
+
+static void
+run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals)
+{
+ static GimpParam values[2];
+ GimpRunMode run_mode;
+ GimpPDBStatusType status;
+ gboolean with_specified_preset;
+ gchar *preset_name = NULL;
+
+ status = GIMP_PDB_SUCCESS;
+ run_mode = param[0].data.d_int32;
+ with_specified_preset = FALSE;
+
+ if (nparams > 3)
+ {
+ preset_name = param[3].data.d_string;
+ if (strcmp (preset_name, ""))
+ {
+ with_specified_preset = TRUE;
+ }
+ }
+
+ values[0].type = GIMP_PDB_STATUS;
+ values[0].data.d_status = status;
+
+ *nreturn_vals = 1;
+ *return_vals = values;
+
+ INIT_I18N ();
+ gegl_init (NULL, NULL);
+
+ /* Get the active drawable info */
+
+ drawable_id = param[2].data.d_drawable;
+ img_has_alpha = gimp_drawable_has_alpha (drawable_id);
+
+ random_generator = g_rand_new ();
+
+ /*
+ * Check precondition before we open a dialog: Is there a selection
+ * that intersects, OR is there no selection (use entire drawable.)
+ */
+ {
+ gint x1, y1, width, height; /* Not used. */
+
+ if (! gimp_drawable_mask_intersect (drawable_id,
+ &x1, &y1, &width, &height))
+ {
+ values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
+ *nreturn_vals = 2;
+ values[1].type = GIMP_PDB_STRING;
+ values[1].data.d_string = _("The selection does not intersect "
+ "the active layer or mask.");
+
+ return;
+ }
+ }
+
+
+ switch (run_mode)
+ {
+ /*
+ * Note: there's a limitation here. Running this plug-in before the
+ * interactive plug-in was run will cause it to crash, because the
+ * data is uninitialized.
+ * */
+ case GIMP_RUN_INTERACTIVE:
+ case GIMP_RUN_NONINTERACTIVE:
+ case GIMP_RUN_WITH_LAST_VALS:
+ gimpressionist_get_data ();
+ if (run_mode == GIMP_RUN_INTERACTIVE)
+ {
+ if (!create_gimpressionist ())
+ return;
+ }
+ break;
+ default:
+ status = GIMP_PDB_EXECUTION_ERROR;
+ break;
+ }
+ if ((status == GIMP_PDB_SUCCESS) &&
+ (gimp_drawable_is_rgb (drawable_id) ||
+ gimp_drawable_is_gray (drawable_id)))
+ {
+
+ if (with_specified_preset)
+ {
+ /* If select_preset fails - set to an error */
+ if (select_preset (preset_name))
+ {
+ status = GIMP_PDB_EXECUTION_ERROR;
+ }
+ }
+ /* It seems that the value of the run variable is stored in
+ * the preset. I don't know if it's a bug or a feature, but
+ * I just work here and am anxious to get a working version.
+ * So I'm setting it to the correct value here.
+ *
+ * It also seems that defaultpcvals have this erroneous
+ * value as well, so it gets set to FALSE as well. Thus it
+ * is always set to TRUE upon a non-interactive run.
+ * -- Shlomi Fish
+ * */
+ if (run_mode == GIMP_RUN_NONINTERACTIVE)
+ {
+ pcvals.run = TRUE;
+ }
+
+ if (status == GIMP_PDB_SUCCESS)
+ {
+ gimpressionist_main ();
+ gimp_displays_flush ();
+
+ if (run_mode == GIMP_RUN_INTERACTIVE)
+ gimp_set_data (PLUG_IN_PROC,
+ &pcvals,
+ sizeof (gimpressionist_vals_t));
+ }
+ }
+ else if (status == GIMP_PDB_SUCCESS)
+ {
+ status = GIMP_PDB_EXECUTION_ERROR;
+ }
+
+ /* Resources Cleanup */
+ g_rand_free (random_generator);
+ free_parsepath_cache ();
+ brush_reload (NULL, NULL);
+ preview_free_resources ();
+ brush_free ();
+ preset_free ();
+ orientation_map_free_resources ();
+ size_map_free_resources ();
+
+ values[0].data.d_status = status;
+}
+
+static const Babl *
+get_u8_format (gint32 drawable_id)
+{
+ if (gimp_drawable_is_rgb (drawable_id))
+ {
+ if (gimp_drawable_has_alpha (drawable_id))
+ return babl_format ("R'G'B'A u8");
+ else
+ return babl_format ("R'G'B' u8");
+ }
+ else
+ {
+ if (gimp_drawable_has_alpha (drawable_id))
+ return babl_format ("Y'A u8");
+ else
+ return babl_format ("Y' u8");
+ }
+}
+
+void
+grabarea (void)
+{
+ GeglBuffer *src_buffer;
+ GeglBufferIterator *iter;
+ const Babl *format;
+ gint bpp;
+ ppm_t *p;
+ gint x1, y1;
+ gint x, y;
+ gint width, height;
+ gint row, col;
+ gint rowstride;
+
+ if (! gimp_drawable_mask_intersect (drawable_id,
+ &x1, &y1, &width, &height))
+ return;
+
+ ppm_new (&infile, width, height);
+ p = &infile;
+
+ format = get_u8_format (drawable_id);
+ bpp = babl_format_get_bytes_per_pixel (format);
+
+ if (gimp_drawable_has_alpha (drawable_id))
+ ppm_new (&inalpha, width, height);
+
+ rowstride = p->width * 3;
+
+ src_buffer = gimp_drawable_get_buffer (drawable_id);
+
+ iter = gegl_buffer_iterator_new (src_buffer,
+ GEGL_RECTANGLE (x1, y1, width, height), 0,
+ format,
+ GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 1);
+
+ while (gegl_buffer_iterator_next (iter))
+ {
+ GeglRectangle roi = iter->items[0].roi;
+ const guchar *src = iter->items[0].data;
+
+ switch (bpp)
+ {
+ case 1:
+ for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
+ {
+ const guchar *s = src;
+ guchar *tmprow = p->col + row * rowstride;
+
+ for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
+ {
+ gint k = col * 3;
+
+ tmprow[k + 0] = s[0];
+ tmprow[k + 1] = s[0];
+ tmprow[k + 2] = s[0];
+
+ s++;
+ }
+
+ src += bpp * roi.width;
+ }
+ break;
+
+ case 2:
+ for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
+ {
+ const guchar *s = src;
+ guchar *tmprow = p->col + row * rowstride;
+ guchar *tmparow = inalpha.col + row * rowstride;
+
+ for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
+ {
+ gint k = col * 3;
+
+ tmprow[k + 0] = s[0];
+ tmprow[k + 1] = s[0];
+ tmprow[k + 2] = s[0];
+ tmparow[k] = 255 - s[1];
+
+ s += 2;
+ }
+
+ src += bpp * roi.width;
+ }
+ break;
+
+ case 3:
+ col = roi.x - x1;
+
+ for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
+ {
+ memcpy (p->col + row * rowstride + col * 3, src, roi.width * 3);
+
+ src += bpp * roi.width;
+ }
+ break;
+
+ case 4:
+ for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
+ {
+ const guchar *s = src;
+ guchar *tmprow = p->col + row * rowstride;
+ guchar *tmparow = inalpha.col + row * rowstride;
+
+ for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
+ {
+ gint k = col * 3;
+
+ tmprow[k + 0] = s[0];
+ tmprow[k + 1] = s[1];
+ tmprow[k + 2] = s[2];
+ tmparow[k] = 255 - s[3];
+
+ s += 4;
+ }
+
+ src += bpp * roi.width;
+ }
+ break;
+ }
+ }
+
+ g_object_unref (src_buffer);
+}
+
+static void
+gimpressionist_main (void)
+{
+ GeglBuffer *dest_buffer;
+ GeglBufferIterator *iter;
+ const Babl *format;
+ gint bpp;
+ ppm_t *p;
+ gint x1, y1;
+ gint x, y;
+ gint width, height;
+ gint row, col;
+ gint rowstride;
+ glong done = 0;
+ glong total;
+
+ if (! gimp_drawable_mask_intersect (drawable_id,
+ &x1, &y1, &width, &height))
+ return;
+
+ total = width * height;
+
+ format = get_u8_format (drawable_id);
+ bpp = babl_format_get_bytes_per_pixel (format);
+
+ gimp_progress_init (_("Painting"));
+
+ if (! PPM_IS_INITED (&infile))
+ grabarea ();
+
+ repaint (&infile, (img_has_alpha) ? &inalpha : NULL);
+
+ p = &infile;
+
+ rowstride = p->width * 3;
+
+ dest_buffer = gimp_drawable_get_shadow_buffer (drawable_id);
+
+ iter = gegl_buffer_iterator_new (dest_buffer,
+ GEGL_RECTANGLE (x1, y1, width, height), 0,
+ format,
+ GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE, 1);
+
+ while (gegl_buffer_iterator_next (iter))
+ {
+ GeglRectangle roi = iter->items[0].roi;
+ guchar *dest = iter->items[0].data;
+
+ switch (bpp)
+ {
+ case 1:
+ for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
+ {
+ guchar *d = dest;
+ const guchar *tmprow = p->col + row * rowstride;
+
+ for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
+ {
+ gint k = col * 3;
+
+ *d++ = GIMP_RGB_LUMINANCE (tmprow[k + 0],
+ tmprow[k + 1],
+ tmprow[k + 2]);
+ }
+
+ dest += bpp * roi.width;
+ }
+ break;
+
+ case 2:
+ for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
+ {
+ guchar *d = dest;
+ const guchar *tmprow = p->col + row * rowstride;
+ const guchar *tmparow = inalpha.col + row * rowstride;
+
+ for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
+ {
+ gint k = col * 3;
+ gint value = GIMP_RGB_LUMINANCE (tmprow[k + 0],
+ tmprow[k + 1],
+ tmprow[k + 2]);
+
+ d[0] = value;
+ d[1] = 255 - tmparow[k];
+
+ d += 2;
+ }
+
+ dest += bpp * roi.width;
+ }
+ break;
+
+ case 3:
+ col = roi.x - x1;
+
+ for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
+ {
+ memcpy (dest, p->col + row * rowstride + col * 3, roi.width * 3);
+
+ dest += bpp * roi.width;
+ }
+ break;
+
+ case 4:
+ for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
+ {
+ guchar *d = dest;
+ const guchar *tmprow = p->col + row * rowstride;
+ const guchar *tmparow = inalpha.col + row * rowstride;
+
+ for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
+ {
+ gint k = col * 3;
+
+ d[0] = tmprow[k + 0];
+ d[1] = tmprow[k + 1];
+ d[2] = tmprow[k + 2];
+ d[3] = 255 - tmparow[k];
+
+ d += 4;
+ }
+
+ dest += bpp * roi.width;
+ }
+ break;
+ }
+
+ done += roi.width * roi.height;
+
+ gimp_progress_update (0.8 + 0.2 * done / total);
+ }
+
+ g_object_unref (dest_buffer);
+
+ gimp_progress_update (1.0);
+
+ gimp_drawable_merge_shadow (drawable_id, TRUE);
+ gimp_drawable_update (drawable_id, x1, y1, width, height);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 13:46:39 +0000