Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 537 insertions, 0 deletions

diff --git a/app/paint/gimpperspectiveclone.c b/app/paint/gimpperspectiveclone.c
new file mode 100644
index 0000000..abb9fab
--- /dev/null
+++ b/app/paint/gimpperspectiveclone.c
@@ -0,0 +1,537 @@
+/* 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 <stdlib.h>
+#include <string.h>
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "paint-types.h"
+
+#include "gegl/gimp-gegl-nodes.h"
+#include "gegl/gimp-gegl-utils.h"
+
+#include "core/gimp.h"
+#include "core/gimp-utils.h"
+#include "core/gimpdrawable.h"
+#include "core/gimperror.h"
+#include "core/gimpimage.h"
+#include "core/gimppattern.h"
+#include "core/gimppickable.h"
+#include "core/gimpsymmetry.h"
+
+#include "gimpperspectiveclone.h"
+#include "gimpperspectivecloneoptions.h"
+
+#include "gimp-intl.h"
+
+
+static void         gimp_perspective_clone_paint      (GimpPaintCore     *paint_core,
+                                                       GimpDrawable      *drawable,
+                                                       GimpPaintOptions  *paint_options,
+                                                       GimpSymmetry      *sym,
+                                                       GimpPaintState     paint_state,
+                                                       guint32            time);
+
+static gboolean     gimp_perspective_clone_use_source (GimpSourceCore    *source_core,
+                                                       GimpSourceOptions *options);
+static GeglBuffer * gimp_perspective_clone_get_source (GimpSourceCore    *source_core,
+                                                       GimpDrawable      *drawable,
+                                                       GimpPaintOptions  *paint_options,
+                                                       GimpPickable      *src_pickable,
+                                                       gint               src_offset_x,
+                                                       gint               src_offset_y,
+                                                       GeglBuffer        *paint_buffer,
+                                                       gint               paint_buffer_x,
+                                                       gint               paint_buffer_y,
+                                                       gint              *paint_area_offset_x,
+                                                       gint              *paint_area_offset_y,
+                                                       gint              *paint_area_width,
+                                                       gint              *paint_area_height,
+                                                       GeglRectangle     *src_rect);
+
+static void         gimp_perspective_clone_get_matrix (GimpPerspectiveClone *clone,
+                                                       GimpMatrix3          *matrix);
+
+
+G_DEFINE_TYPE (GimpPerspectiveClone, gimp_perspective_clone,
+               GIMP_TYPE_CLONE)
+
+#define parent_class gimp_perspective_clone_parent_class
+
+
+void
+gimp_perspective_clone_register (Gimp                      *gimp,
+                                 GimpPaintRegisterCallback  callback)
+{
+  (* callback) (gimp,
+                GIMP_TYPE_PERSPECTIVE_CLONE,
+                GIMP_TYPE_PERSPECTIVE_CLONE_OPTIONS,
+                "gimp-perspective-clone",
+                _("Perspective Clone"),
+                "gimp-tool-perspective-clone");
+}
+
+static void
+gimp_perspective_clone_class_init (GimpPerspectiveCloneClass *klass)
+{
+  GimpPaintCoreClass  *paint_core_class  = GIMP_PAINT_CORE_CLASS (klass);
+  GimpSourceCoreClass *source_core_class = GIMP_SOURCE_CORE_CLASS (klass);
+
+  paint_core_class->paint       = gimp_perspective_clone_paint;
+
+  source_core_class->use_source = gimp_perspective_clone_use_source;
+  source_core_class->get_source = gimp_perspective_clone_get_source;
+}
+
+static void
+gimp_perspective_clone_init (GimpPerspectiveClone *clone)
+{
+  clone->src_x_fv  = 0.0;    /* source coords in front_view perspective */
+  clone->src_y_fv  = 0.0;
+
+  clone->dest_x_fv = 0.0;    /* destination coords in front_view perspective */
+  clone->dest_y_fv = 0.0;
+
+  gimp_matrix3_identity (&clone->transform);
+  gimp_matrix3_identity (&clone->transform_inv);
+}
+
+static void
+gimp_perspective_clone_paint (GimpPaintCore    *paint_core,
+                              GimpDrawable     *drawable,
+                              GimpPaintOptions *paint_options,
+                              GimpSymmetry     *sym,
+                              GimpPaintState    paint_state,
+                              guint32           time)
+{
+  GimpSourceCore       *source_core   = GIMP_SOURCE_CORE (paint_core);
+  GimpPerspectiveClone *clone         = GIMP_PERSPECTIVE_CLONE (paint_core);
+  GimpContext          *context       = GIMP_CONTEXT (paint_options);
+  GimpCloneOptions     *clone_options = GIMP_CLONE_OPTIONS (paint_options);
+  GimpSourceOptions    *options       = GIMP_SOURCE_OPTIONS (paint_options);
+  const GimpCoords     *coords;
+
+  /* The source is based on the original stroke */
+  coords = gimp_symmetry_get_origin (sym);
+
+  switch (paint_state)
+    {
+    case GIMP_PAINT_STATE_INIT:
+      if (source_core->set_source)
+        {
+          g_object_set (source_core, "src-drawable", drawable, NULL);
+
+          source_core->src_x = floor (coords->x);
+          source_core->src_y = floor (coords->y);
+
+          /* get source coordinates in front view perspective */
+          gimp_matrix3_transform_point (&clone->transform_inv,
+                                        source_core->src_x,
+                                        source_core->src_y,
+                                        &clone->src_x_fv,
+                                        &clone->src_y_fv);
+
+          source_core->first_stroke = TRUE;
+        }
+      else
+        {
+          GeglBuffer *orig_buffer = NULL;
+          GeglNode   *tile        = NULL;
+          GeglNode   *src_node;
+
+          if (options->align_mode == GIMP_SOURCE_ALIGN_NO)
+            {
+              source_core->orig_src_x = source_core->src_x;
+              source_core->orig_src_y = source_core->src_y;
+
+              source_core->first_stroke = TRUE;
+            }
+
+          clone->node = gegl_node_new ();
+
+          g_object_set (clone->node,
+                        "cache-policy", GEGL_CACHE_POLICY_NEVER,
+                        NULL);
+
+          switch (clone_options->clone_type)
+            {
+            case GIMP_CLONE_IMAGE:
+              {
+                GimpPickable *src_pickable;
+                GimpImage    *src_image;
+                GimpImage    *dest_image;
+
+                /*  If the source image is different from the
+                 *  destination, then we should copy straight from the
+                 *  source image to the canvas.
+                 *  Otherwise, we need a call to get_orig_image to make sure
+                 *  we get a copy of the unblemished (offset) image
+                 */
+                src_pickable = GIMP_PICKABLE (source_core->src_drawable);
+                src_image    = gimp_pickable_get_image (src_pickable);
+
+                if (options->sample_merged)
+                  src_pickable = GIMP_PICKABLE (src_image);
+
+                dest_image = gimp_item_get_image (GIMP_ITEM (drawable));
+
+                if ((options->sample_merged &&
+                     (src_image != dest_image)) ||
+                    (! options->sample_merged &&
+                     (source_core->src_drawable != drawable)))
+                  {
+                    orig_buffer = gimp_pickable_get_buffer (src_pickable);
+                  }
+                else
+                  {
+                    if (options->sample_merged)
+                      orig_buffer = gimp_paint_core_get_orig_proj (paint_core);
+                    else
+                      orig_buffer = gimp_paint_core_get_orig_image (paint_core);
+                  }
+              }
+              break;
+
+            case GIMP_CLONE_PATTERN:
+              {
+                GimpPattern *pattern = gimp_context_get_pattern (context);
+
+                orig_buffer = gimp_pattern_create_buffer (pattern);
+
+                tile = gegl_node_new_child (clone->node,
+                                            "operation", "gegl:tile",
+                                            NULL);
+                clone->crop = gegl_node_new_child (clone->node,
+                                                   "operation", "gegl:crop",
+                                                   NULL);
+              }
+              break;
+            }
+
+          src_node = gegl_node_new_child (clone->node,
+                                          "operation", "gegl:buffer-source",
+                                          "buffer",    orig_buffer,
+                                          NULL);
+
+          clone->transform_node =
+            gegl_node_new_child (clone->node,
+                                 "operation", "gegl:transform",
+                                 "sampler",    GIMP_INTERPOLATION_LINEAR,
+                                 NULL);
+
+          clone->dest_node =
+            gegl_node_new_child (clone->node,
+                                 "operation", "gegl:write-buffer",
+                                 NULL);
+
+          if (tile)
+            {
+              gegl_node_link_many (src_node,
+                                   tile,
+                                   clone->crop,
+                                   clone->transform_node,
+                                   clone->dest_node,
+                                   NULL);
+
+              g_object_unref (orig_buffer);
+            }
+          else
+            {
+              gegl_node_link_many (src_node,
+                                   clone->transform_node,
+                                   clone->dest_node,
+                                   NULL);
+            }
+        }
+      break;
+
+    case GIMP_PAINT_STATE_MOTION:
+      if (source_core->set_source)
+        {
+          /*  If the control key is down, move the src target and return */
+
+          source_core->src_x = floor (coords->x);
+          source_core->src_y = floor (coords->y);
+
+          /* get source coordinates in front view perspective */
+          gimp_matrix3_transform_point (&clone->transform_inv,
+                                        source_core->src_x,
+                                        source_core->src_y,
+                                        &clone->src_x_fv,
+                                        &clone->src_y_fv);
+
+          source_core->first_stroke = TRUE;
+        }
+      else
+        {
+          /*  otherwise, update the target  */
+
+          gint dest_x;
+          gint dest_y;
+          gint n_strokes;
+          gint i;
+
+          n_strokes = gimp_symmetry_get_size (sym);
+          for (i = 0; i < n_strokes; i++)
+            {
+              coords = gimp_symmetry_get_coords (sym, i);
+
+              dest_x = floor (coords->x);
+              dest_y = floor (coords->y);
+
+              if (options->align_mode == GIMP_SOURCE_ALIGN_REGISTERED)
+                {
+                  source_core->offset_x = 0;
+                  source_core->offset_y = 0;
+                }
+              else if (options->align_mode == GIMP_SOURCE_ALIGN_FIXED)
+                {
+                  source_core->offset_x = source_core->src_x - dest_x;
+                  source_core->offset_y = source_core->src_y - dest_y;
+                }
+              else if (source_core->first_stroke)
+                {
+                  source_core->offset_x = source_core->src_x - dest_x;
+                  source_core->offset_y = source_core->src_y - dest_y;
+
+                  /* get destination coordinates in front view perspective */
+                  gimp_matrix3_transform_point (&clone->transform_inv,
+                                                dest_x,
+                                                dest_y,
+                                                &clone->dest_x_fv,
+                                                &clone->dest_y_fv);
+
+                  source_core->first_stroke = FALSE;
+                }
+            }
+
+          gimp_source_core_motion (source_core, drawable, paint_options, sym);
+        }
+      break;
+
+    case GIMP_PAINT_STATE_FINISH:
+      g_clear_object (&clone->node);
+      clone->crop           = NULL;
+      clone->transform_node = NULL;
+      clone->dest_node      = NULL;
+      break;
+
+    default:
+      break;
+    }
+
+  g_object_notify (G_OBJECT (clone), "src-x");
+  g_object_notify (G_OBJECT (clone), "src-y");
+}
+
+static gboolean
+gimp_perspective_clone_use_source (GimpSourceCore    *source_core,
+                                   GimpSourceOptions *options)
+{
+  return TRUE;
+}
+
+static GeglBuffer *
+gimp_perspective_clone_get_source (GimpSourceCore   *source_core,
+                                   GimpDrawable     *drawable,
+                                   GimpPaintOptions *paint_options,
+                                   GimpPickable     *src_pickable,
+                                   gint              src_offset_x,
+                                   gint              src_offset_y,
+                                   GeglBuffer       *paint_buffer,
+                                   gint              paint_buffer_x,
+                                   gint              paint_buffer_y,
+                                   gint             *paint_area_offset_x,
+                                   gint             *paint_area_offset_y,
+                                   gint             *paint_area_width,
+                                   gint             *paint_area_height,
+                                   GeglRectangle    *src_rect)
+{
+  GimpPerspectiveClone *clone         = GIMP_PERSPECTIVE_CLONE (source_core);
+  GimpCloneOptions     *clone_options = GIMP_CLONE_OPTIONS (paint_options);
+  GeglBuffer           *src_buffer;
+  GeglBuffer           *dest_buffer;
+  const Babl           *src_format_alpha;
+  gint                  x1d, y1d, x2d, y2d;
+  gdouble               x1s, y1s, x2s, y2s, x3s, y3s, x4s, y4s;
+  gint                  xmin, ymin, xmax, ymax;
+  GimpMatrix3           matrix;
+  GimpMatrix3           gegl_matrix;
+
+  src_buffer       = gimp_pickable_get_buffer (src_pickable);
+  src_format_alpha = gimp_pickable_get_format_with_alpha (src_pickable);
+
+  /* Destination coordinates that will be painted */
+  x1d = paint_buffer_x;
+  y1d = paint_buffer_y;
+  x2d = paint_buffer_x + gegl_buffer_get_width  (paint_buffer);
+  y2d = paint_buffer_y + gegl_buffer_get_height (paint_buffer);
+
+  /* Boundary box for source pixels to copy: Convert all the vertex of
+   * the box to paint in destination area to its correspondent in
+   * source area bearing in mind perspective
+   */
+  gimp_perspective_clone_get_source_point (clone, x1d, y1d, &x1s, &y1s);
+  gimp_perspective_clone_get_source_point (clone, x1d, y2d, &x2s, &y2s);
+  gimp_perspective_clone_get_source_point (clone, x2d, y1d, &x3s, &y3s);
+  gimp_perspective_clone_get_source_point (clone, x2d, y2d, &x4s, &y4s);
+
+  xmin = floor (MIN4 (x1s, x2s, x3s, x4s));
+  ymin = floor (MIN4 (y1s, y2s, y3s, y4s));
+  xmax = ceil  (MAX4 (x1s, x2s, x3s, x4s));
+  ymax = ceil  (MAX4 (y1s, y2s, y3s, y4s));
+
+  switch (clone_options->clone_type)
+    {
+    case GIMP_CLONE_IMAGE:
+      if (! gimp_rectangle_intersect (xmin, ymin,
+                                      xmax - xmin, ymax - ymin,
+                                      gegl_buffer_get_x      (src_buffer),
+                                      gegl_buffer_get_y      (src_buffer),
+                                      gegl_buffer_get_width  (src_buffer),
+                                      gegl_buffer_get_height (src_buffer),
+                                      NULL, NULL, NULL, NULL))
+        {
+          /* if the source area is completely out of the image */
+          return NULL;
+        }
+      break;
+
+    case GIMP_CLONE_PATTERN:
+      gegl_node_set (clone->crop,
+                     "x",      (gdouble) xmin,
+                     "y",      (gdouble) ymin,
+                     "width",  (gdouble) xmax - xmin,
+                     "height", (gdouble) ymax - ymin,
+                     NULL);
+      break;
+    }
+
+  dest_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, x2d - x1d, y2d - y1d),
+                                 src_format_alpha);
+
+  gimp_perspective_clone_get_matrix (clone, &matrix);
+
+  gimp_matrix3_identity (&gegl_matrix);
+  gimp_matrix3_mult (&matrix, &gegl_matrix);
+  gimp_matrix3_translate (&gegl_matrix, -x1d, -y1d);
+
+  gimp_gegl_node_set_matrix (clone->transform_node, &gegl_matrix);
+
+  gegl_node_set (clone->dest_node,
+                 "buffer", dest_buffer,
+                 NULL);
+
+  gegl_node_blit (clone->dest_node, 1.0,
+                  GEGL_RECTANGLE (0, 0, x2d - x1d, y2d - y1d),
+                  NULL, NULL, 0, GEGL_BLIT_DEFAULT);
+
+  *src_rect = *GEGL_RECTANGLE (0, 0, x2d - x1d, y2d - y1d);
+
+  return dest_buffer;
+}
+
+
+/*  public functions  */
+
+void
+gimp_perspective_clone_set_transform (GimpPerspectiveClone *clone,
+                                      GimpMatrix3          *transform)
+{
+  g_return_if_fail (GIMP_IS_PERSPECTIVE_CLONE (clone));
+  g_return_if_fail (transform != NULL);
+
+  clone->transform = *transform;
+
+  clone->transform_inv = clone->transform;
+  gimp_matrix3_invert (&clone->transform_inv);
+
+#if 0
+  g_printerr ("%f\t%f\t%f\n%f\t%f\t%f\n%f\t%f\t%f\n\n",
+              clone->transform.coeff[0][0],
+              clone->transform.coeff[0][1],
+              clone->transform.coeff[0][2],
+              clone->transform.coeff[1][0],
+              clone->transform.coeff[1][1],
+              clone->transform.coeff[1][2],
+              clone->transform.coeff[2][0],
+              clone->transform.coeff[2][1],
+              clone->transform.coeff[2][2]);
+#endif
+}
+
+void
+gimp_perspective_clone_get_source_point (GimpPerspectiveClone *clone,
+                                         gdouble               x,
+                                         gdouble               y,
+                                         gdouble              *newx,
+                                         gdouble              *newy)
+{
+  gdouble temp_x, temp_y;
+
+  g_return_if_fail (GIMP_IS_PERSPECTIVE_CLONE (clone));
+  g_return_if_fail (newx != NULL);
+  g_return_if_fail (newy != NULL);
+
+  gimp_matrix3_transform_point (&clone->transform_inv,
+                                x, y, &temp_x, &temp_y);
+
+#if 0
+  /* Get the offset of each pixel in destination area from the
+   * destination pixel in front view perspective
+   */
+  offset_x_fv = temp_x - clone->dest_x_fv;
+  offset_y_fv = temp_y - clone->dest_y_fv;
+
+  /* Get the source pixel in front view perspective */
+  temp_x = offset_x_fv + clone->src_x_fv;
+  temp_y = offset_y_fv + clone->src_y_fv;
+#endif
+
+  temp_x += clone->src_x_fv - clone->dest_x_fv;
+  temp_y += clone->src_y_fv - clone->dest_y_fv;
+
+  /* Convert the source pixel to perspective view */
+  gimp_matrix3_transform_point (&clone->transform,
+                                temp_x, temp_y, newx, newy);
+}
+
+
+/*  private functions  */
+
+static void
+gimp_perspective_clone_get_matrix (GimpPerspectiveClone *clone,
+                                   GimpMatrix3          *matrix)
+{
+  GimpMatrix3 temp;
+
+  gimp_matrix3_identity (&temp);
+  gimp_matrix3_translate (&temp,
+                          clone->dest_x_fv - clone->src_x_fv,
+                          clone->dest_y_fv - clone->src_y_fv);
+
+  *matrix = clone->transform_inv;
+  gimp_matrix3_mult (&temp, matrix);
+  gimp_matrix3_mult (&clone->transform, matrix);
+}