Adding upstream version 2.10.34.upstream/2.10.34upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 397 insertions, 0 deletions

diff --git a/libgimp/gimpregioniterator.c b/libgimp/gimpregioniterator.c
new file mode 100644
index 0000000..ad866c5
--- /dev/null
+++ b/libgimp/gimpregioniterator.c
@@ -0,0 +1,397 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * gimpregioniterator.c
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <glib.h>
+
+#define GIMP_DISABLE_DEPRECATION_WARNINGS
+
+#include "gimp.h"
+#include "gimpregioniterator.h"
+
+
+/**
+ * SECTION: gimpregioniterator
+ * @title: gimpregioniterator
+ * @short_description: Functions to traverse a pixel regions.
+ *
+ * The GimpRgnIterator functions provide a variety of common ways to
+ * traverse a PixelRegion, using a pre-defined function pointer per
+ * pixel.
+ **/
+
+
+struct _GimpRgnIterator
+{
+  GimpDrawable *drawable;
+  gint          x1;
+  gint          y1;
+  gint          x2;
+  gint          y2;
+};
+
+
+static void  gimp_rgn_iterator_iter_single (GimpRgnIterator    *iter,
+                                            GimpPixelRgn       *srcPR,
+                                            GimpRgnFuncSrc      func,
+                                            gpointer            data);
+static void  gimp_rgn_render_row           (const guchar       *src,
+                                            guchar             *dest,
+                                            gint                col,
+                                            gint                bpp,
+                                            GimpRgnFunc2        func,
+                                            gpointer            data);
+static void  gimp_rgn_render_region        (const GimpPixelRgn *srcPR,
+                                            const GimpPixelRgn *destPR,
+                                            GimpRgnFunc2        func,
+                                            gpointer            data);
+
+
+/**
+ * gimp_rgn_iterator_new:
+ * @drawable: a #GimpDrawable
+ * @unused:   ignored
+ *
+ * Creates a new #GimpRgnIterator for @drawable. The #GimpRunMode
+ * parameter is ignored. Use gimp_rgn_iterator_free() to free this
+ * iterator.
+ *
+ * Return value: a newly allocated #GimpRgnIterator.
+ **/
+GimpRgnIterator *
+gimp_rgn_iterator_new (GimpDrawable *drawable,
+                       GimpRunMode   unused)
+{
+  GimpRgnIterator *iter;
+
+  g_return_val_if_fail (drawable != NULL, NULL);
+
+  iter = g_slice_new (GimpRgnIterator);
+
+  iter->drawable = drawable;
+
+  gimp_drawable_mask_bounds (drawable->drawable_id,
+                             &iter->x1, &iter->y1,
+                             &iter->x2, &iter->y2);
+
+  return iter;
+}
+
+/**
+ * gimp_rgn_iterator_free:
+ * @iter: a #GimpRgnIterator
+ *
+ * Frees the resources allocated for @iter.
+ **/
+void
+gimp_rgn_iterator_free (GimpRgnIterator *iter)
+{
+  g_return_if_fail (iter != NULL);
+
+  g_slice_free (GimpRgnIterator, iter);
+}
+
+void
+gimp_rgn_iterator_src (GimpRgnIterator *iter,
+                       GimpRgnFuncSrc   func,
+                       gpointer         data)
+{
+  GimpPixelRgn srcPR;
+
+  g_return_if_fail (iter != NULL);
+
+  gimp_pixel_rgn_init (&srcPR, iter->drawable,
+                       iter->x1, iter->y1,
+                       iter->x2 - iter->x1, iter->y2 - iter->y1,
+                       FALSE, FALSE);
+  gimp_rgn_iterator_iter_single (iter, &srcPR, func, data);
+}
+
+void
+gimp_rgn_iterator_src_dest (GimpRgnIterator    *iter,
+                            GimpRgnFuncSrcDest  func,
+                            gpointer            data)
+{
+  GimpPixelRgn  srcPR, destPR;
+  gint          x1, y1, x2, y2;
+  gint          bpp;
+  gint          count;
+  gpointer      pr;
+  gint          total_area;
+  gint          area_so_far;
+
+  g_return_if_fail (iter != NULL);
+
+  x1 = iter->x1;
+  y1 = iter->y1;
+  x2 = iter->x2;
+  y2 = iter->y2;
+
+  total_area  = (x2 - x1) * (y2 - y1);
+  area_so_far = 0;
+
+  gimp_pixel_rgn_init (&srcPR, iter->drawable, x1, y1, x2 - x1, y2 - y1,
+                       FALSE, FALSE);
+  gimp_pixel_rgn_init (&destPR, iter->drawable, x1, y1, x2 - x1, y2 - y1,
+                       TRUE, TRUE);
+
+  bpp = srcPR.bpp;
+
+  for (pr = gimp_pixel_rgns_register (2, &srcPR, &destPR), count = 0;
+       pr != NULL;
+       pr = gimp_pixel_rgns_process (pr), count++)
+    {
+      const guchar *src  = srcPR.data;
+      guchar       *dest = destPR.data;
+      gint          y;
+
+      for (y = srcPR.y; y < srcPR.y + srcPR.h; y++)
+        {
+          const guchar *s = src;
+          guchar       *d = dest;
+          gint          x;
+
+          for (x = srcPR.x; x < srcPR.x + srcPR.w; x++)
+            {
+              func (x, y, s, d, bpp, data);
+
+              s += bpp;
+              d += bpp;
+            }
+
+          src  += srcPR.rowstride;
+          dest += destPR.rowstride;
+        }
+
+      area_so_far += srcPR.w * srcPR.h;
+
+      if ((count % 16) == 0)
+        gimp_progress_update ((gdouble) area_so_far / (gdouble) total_area);
+    }
+
+  gimp_drawable_flush (iter->drawable);
+  gimp_drawable_merge_shadow (iter->drawable->drawable_id, TRUE);
+  gimp_drawable_update (iter->drawable->drawable_id,
+                        x1, y1, x2 - x1, y2 - y1);
+}
+
+void
+gimp_rgn_iterator_dest (GimpRgnIterator *iter,
+                        GimpRgnFuncDest  func,
+                        gpointer         data)
+{
+  GimpPixelRgn destPR;
+
+  g_return_if_fail (iter != NULL);
+
+  gimp_pixel_rgn_init (&destPR, iter->drawable,
+                       iter->x1, iter->y1,
+                       iter->x2 - iter->x1, iter->y2 - iter->y1,
+                       TRUE, TRUE);
+  gimp_rgn_iterator_iter_single (iter, &destPR, (GimpRgnFuncSrc) func, data);
+
+  /*  update the processed region  */
+  gimp_drawable_flush (iter->drawable);
+  gimp_drawable_merge_shadow (iter->drawable->drawable_id, TRUE);
+  gimp_drawable_update (iter->drawable->drawable_id,
+                        iter->x1, iter->y1,
+                        iter->x2 - iter->x1, iter->y2 - iter->y1);
+}
+
+
+void
+gimp_rgn_iterate1 (GimpDrawable *drawable,
+                   GimpRunMode   unused,
+                   GimpRgnFunc1  func,
+                   gpointer      data)
+{
+  GimpPixelRgn  srcPR;
+  gint          x1, y1, x2, y2;
+  gpointer      pr;
+  gint          total_area;
+  gint          area_so_far;
+  gint          count;
+
+  g_return_if_fail (drawable != NULL);
+
+  gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
+
+  total_area  = (x2 - x1) * (y2 - y1);
+  area_so_far = 0;
+
+  if (total_area <= 0)
+    return;
+
+  gimp_pixel_rgn_init (&srcPR, drawable,
+                       x1, y1, (x2 - x1), (y2 - y1), FALSE, FALSE);
+
+  for (pr = gimp_pixel_rgns_register (1, &srcPR), count = 0;
+       pr != NULL;
+       pr = gimp_pixel_rgns_process (pr), count++)
+    {
+      const guchar *src = srcPR.data;
+      gint          y;
+
+      for (y = 0; y < srcPR.h; y++)
+        {
+          const guchar *s = src;
+          gint          x;
+
+          for (x = 0; x < srcPR.w; x++)
+            {
+              func (s, srcPR.bpp, data);
+              s += srcPR.bpp;
+            }
+
+          src += srcPR.rowstride;
+        }
+
+      area_so_far += srcPR.w * srcPR.h;
+
+      if ((count % 16) == 0)
+        gimp_progress_update ((gdouble) area_so_far / (gdouble) total_area);
+    }
+}
+
+void
+gimp_rgn_iterate2 (GimpDrawable *drawable,
+                   GimpRunMode   unused,
+                   GimpRgnFunc2  func,
+                   gpointer      data)
+{
+  GimpPixelRgn  srcPR, destPR;
+  gint          x1, y1, x2, y2;
+  gpointer      pr;
+  gint          total_area;
+  gint          area_so_far;
+  gint          count;
+
+  g_return_if_fail (drawable != NULL);
+
+  gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
+
+  total_area  = (x2 - x1) * (y2 - y1);
+  area_so_far = 0;
+
+  if (total_area <= 0)
+    return;
+
+  /* Initialize the pixel regions. */
+  gimp_pixel_rgn_init (&srcPR, drawable, x1, y1, (x2 - x1), (y2 - y1),
+                       FALSE, FALSE);
+  gimp_pixel_rgn_init (&destPR, drawable, x1, y1, (x2 - x1), (y2 - y1),
+                       TRUE, TRUE);
+
+  for (pr = gimp_pixel_rgns_register (2, &srcPR, &destPR), count = 0;
+       pr != NULL;
+       pr = gimp_pixel_rgns_process (pr), count++)
+    {
+      gimp_rgn_render_region (&srcPR, &destPR, func, data);
+
+      area_so_far += srcPR.w * srcPR.h;
+
+      if ((count % 16) == 0)
+        gimp_progress_update ((gdouble) area_so_far / (gdouble) total_area);
+    }
+
+  /*  update the processed region  */
+  gimp_drawable_flush (drawable);
+  gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
+  gimp_drawable_update (drawable->drawable_id, x1, y1, (x2 - x1), (y2 - y1));
+}
+
+static void
+gimp_rgn_iterator_iter_single (GimpRgnIterator *iter,
+                               GimpPixelRgn    *srcPR,
+                               GimpRgnFuncSrc   func,
+                               gpointer         data)
+{
+  gpointer  pr;
+  gint      total_area;
+  gint      area_so_far;
+  gint      count;
+
+  total_area  = (iter->x2 - iter->x1) * (iter->y2 - iter->y1);
+  area_so_far = 0;
+
+  for (pr = gimp_pixel_rgns_register (1, srcPR), count = 0;
+       pr != NULL;
+       pr = gimp_pixel_rgns_process (pr), count++)
+    {
+      const guchar *src = srcPR->data;
+      gint          y;
+
+      for (y = srcPR->y; y < srcPR->y + srcPR->h; y++)
+        {
+          const guchar *s = src;
+          gint          x;
+
+          for (x = srcPR->x; x < srcPR->x + srcPR->w; x++)
+            {
+              func (x, y, s, srcPR->bpp, data);
+              s += srcPR->bpp;
+            }
+
+          src += srcPR->rowstride;
+        }
+
+      area_so_far += srcPR->w * srcPR->h;
+
+      if ((count % 16) == 0)
+        gimp_progress_update ((gdouble) area_so_far / (gdouble) total_area);
+    }
+}
+
+static void
+gimp_rgn_render_row (const guchar *src,
+                     guchar       *dest,
+                     gint          col,    /* row width in pixels */
+                     gint          bpp,
+                     GimpRgnFunc2  func,
+                     gpointer      data)
+{
+  while (col--)
+    {
+      func (src, dest, bpp, data);
+
+      src  += bpp;
+      dest += bpp;
+    }
+}
+
+static void
+gimp_rgn_render_region (const GimpPixelRgn *srcPR,
+                        const GimpPixelRgn *destPR,
+                        GimpRgnFunc2        func,
+                        gpointer            data)
+{
+  const guchar *src  = srcPR->data;
+  guchar       *dest = destPR->data;
+  gint          row;
+
+  for (row = 0; row < srcPR->h; row++)
+    {
+      gimp_rgn_render_row (src, dest, srcPR->w, srcPR->bpp, func, data);
+
+      src  += srcPR->rowstride;
+      dest += destPR->rowstride;
+    }
+}