Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 533 insertions, 0 deletions

diff --git a/plug-ins/gfig/gfig-poly.c b/plug-ins/gfig/gfig-poly.c
new file mode 100644
index 0000000..2fe9e5d
--- /dev/null
+++ b/plug-ins/gfig/gfig-poly.c
@@ -0,0 +1,533 @@
+/*
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This is a plug-in for GIMP.
+ *
+ * Generates images containing vector type drawings.
+ *
+ * Copyright (C) 1997 Andy Thomas  alt@picnic.demon.co.uk
+ *
+ * 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/gimpui.h>
+
+#include "gfig.h"
+#include "gfig-dobject.h"
+#include "gfig-line.h"
+#include "gfig-dialog.h"
+#include "gfig-poly.h"
+
+#include "libgimp/stdplugins-intl.h"
+
+static gint poly_num_sides = 3; /* Default to three sided object */
+
+static void        d_draw_poly   (GfigObject *obj,
+                                  cairo_t    *cr);
+static GfigObject *d_copy_poly   (GfigObject *obj);
+
+static void        d_update_poly (GdkPoint   *pnt);
+
+void
+tool_options_poly (GtkWidget *notebook)
+{
+  GtkWidget *sides;
+
+  sides = num_sides_widget (_("Regular Polygon Number of Sides"),
+                            &poly_num_sides, NULL, 3, 200);
+  gtk_notebook_append_page (GTK_NOTEBOOK (notebook), sides, NULL);
+}
+
+static void
+d_draw_poly (GfigObject *obj,
+             cairo_t    *cr)
+{
+  DobjPoints *center_pnt;
+  DobjPoints *radius_pnt;
+  gint16      shift_x;
+  gint16      shift_y;
+  gdouble     ang_grid;
+  gdouble     ang_loop;
+  gdouble     radius;
+  gdouble     offset_angle;
+  gint        loop;
+  GdkPoint    start_pnt = { 0, 0 };
+  GdkPoint    first_pnt = { 0, 0 };
+  gboolean    do_line = FALSE;
+
+  center_pnt = obj->points;
+
+  if (!center_pnt)
+    return; /* End-of-line */
+
+  /* First point is the center */
+  /* Just draw a control point around it */
+
+  draw_sqr (&center_pnt->pnt, obj == gfig_context->selected_obj, cr);
+
+  /* Next point defines the radius */
+  radius_pnt = center_pnt->next; /* this defines the vertices */
+
+  if (!radius_pnt)
+    {
+#ifdef DEBUG
+      g_warning ("Internal error in polygon - no vertice point \n");
+#endif /* DEBUG */
+      return;
+    }
+
+  /* Other control point */
+  if (obj == obj_creating)
+    draw_circle (&radius_pnt->pnt, TRUE, cr);
+  else
+    draw_sqr (&radius_pnt->pnt, obj == gfig_context->selected_obj, cr);
+
+  /* Have center and radius - draw polygon */
+
+  shift_x = radius_pnt->pnt.x - center_pnt->pnt.x;
+  shift_y = radius_pnt->pnt.y - center_pnt->pnt.y;
+
+  radius = sqrt ((shift_x*shift_x) + (shift_y*shift_y));
+
+  /* Lines */
+  ang_grid = 2 * G_PI / (gdouble) obj->type_data;
+  offset_angle = atan2 (shift_y, shift_x);
+
+  for (loop = 0 ; loop < obj->type_data ; loop++)
+    {
+      gdouble  lx, ly;
+      GdkPoint calc_pnt;
+
+      ang_loop = (gdouble)loop * ang_grid + offset_angle;
+
+      lx = radius * cos (ang_loop);
+      ly = radius * sin (ang_loop);
+
+      calc_pnt.x = RINT (lx + center_pnt->pnt.x);
+      calc_pnt.y = RINT (ly + center_pnt->pnt.y);
+
+      if (do_line)
+        {
+
+          /* Miss out points that come to the same location */
+          if (calc_pnt.x == start_pnt.x && calc_pnt.y == start_pnt.y)
+            continue;
+
+          gfig_draw_line (calc_pnt.x, calc_pnt.y, start_pnt.x, start_pnt.y, cr);
+        }
+      else
+        {
+          do_line = TRUE;
+          first_pnt = calc_pnt;
+        }
+      start_pnt = calc_pnt;
+    }
+
+  gfig_draw_line (first_pnt.x, first_pnt.y, start_pnt.x, start_pnt.y, cr);
+}
+
+void
+d_paint_poly (GfigObject *obj)
+{
+  /* first point center */
+  /* Next point is radius */
+  gdouble    *line_pnts;
+  gint        seg_count;
+  gint        i = 0;
+  DobjPoints *center_pnt;
+  DobjPoints *radius_pnt;
+  gint16      shift_x;
+  gint16      shift_y;
+  gdouble     ang_grid;
+  gdouble     ang_loop;
+  gdouble     radius;
+  gdouble     offset_angle;
+  gint        loop;
+  GdkPoint    first_pnt = { 0, 0 };
+  GdkPoint    last_pnt  = { 0, 0 };
+  gboolean    first = TRUE;
+  gdouble    *min_max;
+
+  g_assert (obj != NULL);
+
+  /* count - add one to close polygon */
+  seg_count = obj->type_data + 1;
+
+  center_pnt = obj->points;
+
+  if (!center_pnt || !seg_count || !center_pnt->next)
+    return; /* no-line */
+
+  line_pnts = g_new0 (gdouble, 2 * seg_count + 1);
+  min_max   = g_new (gdouble, 4);
+
+  /* Go around all the points drawing a line from one to the next */
+
+  radius_pnt = center_pnt->next; /* this defines the vetices */
+
+  /* Have center and radius - get lines */
+  shift_x = radius_pnt->pnt.x - center_pnt->pnt.x;
+  shift_y = radius_pnt->pnt.y - center_pnt->pnt.y;
+
+  radius = sqrt ((shift_x*shift_x) + (shift_y*shift_y));
+
+  /* Lines */
+  ang_grid = 2.0 * G_PI/(gdouble) obj->type_data;
+  offset_angle = atan2 (shift_y, shift_x);
+
+  for (loop = 0 ; loop < obj->type_data ; loop++)
+    {
+      gdouble  lx, ly;
+      GdkPoint calc_pnt;
+
+      ang_loop = (gdouble)loop * ang_grid + offset_angle;
+
+      lx = radius * cos (ang_loop);
+      ly = radius * sin (ang_loop);
+
+      calc_pnt.x = RINT (lx + center_pnt->pnt.x);
+      calc_pnt.y = RINT (ly + center_pnt->pnt.y);
+
+      /* Miss out duped pnts */
+      if (!first)
+        {
+          if (calc_pnt.x == last_pnt.x && calc_pnt.y == last_pnt.y)
+            {
+              continue;
+            }
+        }
+
+      line_pnts[i++] = calc_pnt.x;
+      line_pnts[i++] = calc_pnt.y;
+      last_pnt = calc_pnt;
+
+      if (first)
+        {
+          first_pnt = calc_pnt;
+          first = FALSE;
+          min_max[0] = min_max[2] = calc_pnt.x;
+          min_max[1] = min_max[3] = calc_pnt.y;
+        }
+      else
+        {
+          min_max[0] = MIN (min_max[0], calc_pnt.x);
+          min_max[1] = MIN (min_max[1], calc_pnt.y);
+          min_max[2] = MAX (min_max[2], calc_pnt.x);
+          min_max[3] = MAX (min_max[3], calc_pnt.y);
+        }
+    }
+
+  line_pnts[i++] = first_pnt.x;
+  line_pnts[i++] = first_pnt.y;
+
+  /* Scale before drawing */
+  if (selvals.scaletoimage)
+    {/* FIXME scale xmax and al. */
+      scale_to_original_xy (&line_pnts[0], i/2);
+      scale_to_original_xy (min_max, 2);
+    }
+  else
+    {
+      scale_to_xy (&line_pnts[0], i/2);
+      scale_to_xy (min_max, 2);
+    }
+
+
+  if (gfig_context_get_current_style ()->fill_type != FILL_NONE)
+    {
+      gimp_context_push ();
+      gimp_context_set_antialias (selopt.antia);
+      gimp_context_set_feather (selopt.feather);
+      gimp_context_set_feather_radius (selopt.feather_radius, selopt.feather_radius);
+      gimp_image_select_polygon (gfig_context->image_id,
+                                 selopt.type,
+                                 i, line_pnts);
+      gimp_context_pop ();
+
+      paint_layer_fill (min_max[0], min_max[1], min_max[2], min_max[3]);
+      gimp_selection_none (gfig_context->image_id);
+    }
+
+  if (obj->style.paint_type == PAINT_BRUSH_TYPE)
+    gfig_paint (selvals.brshtype, gfig_context->drawable_id, i, line_pnts);
+
+  g_free (line_pnts);
+  g_free (min_max);
+}
+
+void
+d_poly2lines (GfigObject *obj)
+{
+  /* first point center */
+  /* Next point is radius */
+  DobjPoints *center_pnt;
+  DobjPoints *radius_pnt;
+  gint16      shift_x;
+  gint16      shift_y;
+  gdouble     ang_grid;
+  gdouble     ang_loop;
+  gdouble     radius;
+  gdouble     offset_angle;
+  gint        loop;
+  GdkPoint    first_pnt = { 0, 0 };
+  GdkPoint    last_pnt  = { 0, 0 };
+  gboolean    first = TRUE;
+
+  g_assert (obj != NULL);
+
+  center_pnt = obj->points;
+
+  if (!center_pnt)
+    return; /* no-line */
+
+  /* NULL out these points free later */
+  obj->points = NULL;
+
+  /* Go around all the points creating line points */
+
+  radius_pnt = center_pnt->next; /* this defines the vertices */
+
+  /* Have center and radius - get lines */
+  shift_x = radius_pnt->pnt.x - center_pnt->pnt.x;
+  shift_y = radius_pnt->pnt.y - center_pnt->pnt.y;
+
+  radius = sqrt ((shift_x*shift_x) + (shift_y*shift_y));
+
+  /* Lines */
+  ang_grid = 2.0 * G_PI / (gdouble) obj->type_data;
+  offset_angle = atan2 (shift_y, shift_x);
+
+  for (loop = 0 ; loop < obj->type_data ; loop++)
+    {
+      gdouble lx, ly;
+      GdkPoint calc_pnt;
+
+      ang_loop = (gdouble)loop * ang_grid + offset_angle;
+
+      lx = radius * cos (ang_loop);
+      ly = radius * sin (ang_loop);
+
+      calc_pnt.x = RINT (lx + center_pnt->pnt.x);
+      calc_pnt.y = RINT (ly + center_pnt->pnt.y);
+
+      if (!first)
+        {
+          if (calc_pnt.x == last_pnt.x && calc_pnt.y == last_pnt.y)
+            {
+              continue;
+            }
+        }
+
+      d_pnt_add_line (obj, calc_pnt.x, calc_pnt.y, 0);
+
+      last_pnt = calc_pnt;
+
+      if (first)
+        {
+          first_pnt = calc_pnt;
+          first = FALSE;
+        }
+    }
+
+  d_pnt_add_line (obj, first_pnt.x, first_pnt.y, 0);
+  /* Free old pnts */
+  d_delete_dobjpoints (center_pnt);
+
+  /* hey we're a line now */
+  obj->type = LINE;
+  obj->class = &dobj_class[LINE];
+}
+
+void
+d_star2lines (GfigObject *obj)
+{
+  /* first point center */
+  /* Next point is radius */
+  DobjPoints *center_pnt;
+  DobjPoints *outer_radius_pnt;
+  DobjPoints *inner_radius_pnt;
+  gint16      shift_x;
+  gint16      shift_y;
+  gdouble     ang_grid;
+  gdouble     ang_loop;
+  gdouble     outer_radius;
+  gdouble     inner_radius;
+  gdouble     offset_angle;
+  gint        loop;
+  GdkPoint    first_pnt = { 0, 0 };
+  GdkPoint    last_pnt  = { 0, 0 };
+  gboolean    first = TRUE;
+
+  g_assert (obj != NULL);
+
+  center_pnt = obj->points;
+
+  if (!center_pnt)
+    return; /* no-line */
+
+  /* NULL out these points free later */
+  obj->points = NULL;
+
+  /* Go around all the points creating line points */
+  /* Next point defines the radius */
+  outer_radius_pnt = center_pnt->next; /* this defines the vetices */
+
+  if (!outer_radius_pnt)
+    {
+#ifdef DEBUG
+      g_warning ("Internal error in star - no outer vertice point \n");
+#endif /* DEBUG */
+      return;
+    }
+
+  inner_radius_pnt = outer_radius_pnt->next; /* this defines the vetices */
+
+  if (!inner_radius_pnt)
+    {
+#ifdef DEBUG
+      g_warning ("Internal error in star - no inner vertice point \n");
+#endif /* DEBUG */
+      return;
+    }
+
+  shift_x = outer_radius_pnt->pnt.x - center_pnt->pnt.x;
+  shift_y = outer_radius_pnt->pnt.y - center_pnt->pnt.y;
+
+  outer_radius = sqrt ((shift_x*shift_x) + (shift_y*shift_y));
+
+  /* Lines */
+  ang_grid = 2.0 * G_PI / (2.0 * (gdouble) obj->type_data);
+  offset_angle = atan2 (shift_y, shift_x);
+
+  shift_x = inner_radius_pnt->pnt.x - center_pnt->pnt.x;
+  shift_y = inner_radius_pnt->pnt.y - center_pnt->pnt.y;
+
+  inner_radius = sqrt ((shift_x * shift_x) + (shift_y * shift_y));
+
+  for (loop = 0 ; loop < 2 * obj->type_data ; loop++)
+    {
+      gdouble  lx, ly;
+      GdkPoint calc_pnt;
+
+      ang_loop = (gdouble)loop * ang_grid + offset_angle;
+
+      if (loop % 2)
+        {
+          lx = inner_radius * cos (ang_loop);
+          ly = inner_radius * sin (ang_loop);
+        }
+      else
+        {
+          lx = outer_radius * cos (ang_loop);
+          ly = outer_radius * sin (ang_loop);
+        }
+
+      calc_pnt.x = RINT (lx + center_pnt->pnt.x);
+      calc_pnt.y = RINT (ly + center_pnt->pnt.y);
+
+      if (!first)
+        {
+          if (calc_pnt.x == last_pnt.x && calc_pnt.y == last_pnt.y)
+            {
+              continue;
+            }
+        }
+
+      d_pnt_add_line (obj, calc_pnt.x, calc_pnt.y, 0);
+
+      last_pnt = calc_pnt;
+
+      if (first)
+        {
+          first_pnt = calc_pnt;
+          first = FALSE;
+        }
+    }
+
+  d_pnt_add_line (obj, first_pnt.x, first_pnt.y, 0);
+  /* Free old pnts */
+  d_delete_dobjpoints (center_pnt);
+
+  /* hey we're a line now */
+  obj->type = LINE;
+  obj->class = &dobj_class[LINE];
+}
+
+static GfigObject *
+d_copy_poly (GfigObject *obj)
+{
+  GfigObject *np;
+
+  g_assert (obj->type == POLY);
+
+  np = d_new_object (POLY, obj->points->pnt.x, obj->points->pnt.y);
+  np->points->next = d_copy_dobjpoints (obj->points->next);
+  np->type_data = obj->type_data;
+
+  return np;
+}
+
+void
+d_poly_object_class_init (void)
+{
+  GfigObjectClass *class = &dobj_class[POLY];
+
+  class->type      = POLY;
+  class->name      = "POLY";
+  class->drawfunc  = d_draw_poly;
+  class->paintfunc = d_paint_poly;
+  class->copyfunc  = d_copy_poly;
+  class->update    = d_update_poly;
+}
+
+static void
+d_update_poly (GdkPoint *pnt)
+{
+  DobjPoints *center_pnt;
+  DobjPoints *edge_pnt;
+
+  center_pnt = obj_creating->points;
+
+  if (!center_pnt)
+    return; /* No points */
+
+  if ((edge_pnt = center_pnt->next))
+    {
+      edge_pnt->pnt = *pnt;
+    }
+  else
+    {
+      d_pnt_add_line (obj_creating, pnt->x, pnt->y, -1);
+    }
+}
+
+void
+d_poly_start (GdkPoint *pnt,
+              gboolean  shift_down)
+{
+  obj_creating = d_new_object (POLY, pnt->x, pnt->y);
+  obj_creating->type_data = poly_num_sides;
+}
+
+void
+d_poly_end (GdkPoint *pnt,
+            gboolean  shift_down)
+{
+  add_to_all_obj (gfig_context->current_obj, obj_creating);
+  obj_creating = NULL;
+}