Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 660 insertions, 0 deletions

diff --git a/plug-ins/gimpressionist/brush.c b/plug-ins/gimpressionist/brush.c
new file mode 100644
index 0000000..a5d1e59
--- /dev/null
+++ b/plug-ins/gimpressionist/brush.c
@@ -0,0 +1,660 @@
+/* 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 <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#include <libgimpmath/gimpmath.h>
+
+#include <gtk/gtklist.h>
+#include <gtk/gtkpreview.h>
+
+#include "gimpressionist.h"
+#include "ppmtool.h"
+#include "brush.h"
+#include "presets.h"
+
+#include <libgimp/stdplugins-intl.h>
+
+
+static void  update_brush_preview (const char *fn);
+
+
+static GtkWidget    *brush_preview    = NULL;
+static GtkListStore *brush_list_store = NULL;
+
+static GtkWidget     *brush_list          = NULL;
+static GtkAdjustment *brush_relief_adjust = NULL;
+static GtkAdjustment *brush_aspect_adjust = NULL;
+static GtkAdjustment *brush_gamma_adjust  = NULL;
+static gboolean       brush_dont_update   = FALSE;
+
+static gchar *last_selected_brush = NULL;
+
+static gint brush_from_file = 2;
+
+static ppm_t brushppm  = {0, 0, NULL};
+
+void
+brush_restore (void)
+{
+  reselect (brush_list, pcvals.selected_brush);
+  gtk_adjustment_set_value (brush_gamma_adjust, pcvals.brushgamma);
+  gtk_adjustment_set_value (brush_relief_adjust, pcvals.brush_relief);
+  gtk_adjustment_set_value (brush_aspect_adjust, pcvals.brush_aspect);
+}
+
+void
+brush_store (void)
+{
+  pcvals.brushgamma = gtk_adjustment_get_value (brush_gamma_adjust);
+}
+
+void
+brush_free (void)
+{
+  g_free (last_selected_brush);
+}
+
+void brush_get_selected (ppm_t *p)
+{
+  if (brush_from_file)
+    brush_reload (pcvals.selected_brush, p);
+  else
+    ppm_copy (&brushppm, p);
+}
+
+
+static gboolean
+file_is_color (const char *fn)
+{
+  return fn && strstr (fn, ".ppm");
+}
+
+void
+set_colorbrushes (const gchar *fn)
+{
+  pcvals.color_brushes = file_is_color (fn);
+}
+
+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");
+    }
+}
+
+static void
+brushdmenuselect (GtkWidget *widget,
+                  gpointer   data)
+{
+  GeglBuffer *src_buffer;
+  const Babl *format;
+  guchar     *src_row;
+  guchar     *src;
+  gint        bpp;
+  gint        x, y;
+  ppm_t      *p;
+  gint        x1, y1, w, h;
+  gint        row;
+  gint32      drawable_id;
+  gint        rowstride;
+
+  gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &drawable_id);
+
+  if (drawable_id == -1)
+    return;
+
+  if (brush_from_file == 2)
+    return; /* Not finished GUI-building yet */
+
+  if (brush_from_file)
+    {
+#if 0
+      unselectall (brush_list);
+#endif
+      preset_save_button_set_sensitive (FALSE);
+    }
+
+  gtk_adjustment_set_value (brush_gamma_adjust, 1.0);
+  gtk_adjustment_set_value (brush_aspect_adjust, 0.0);
+
+  if (! gimp_drawable_mask_intersect (drawable_id, &x1, &y1, &w, &h))
+    return;
+
+  format = get_u8_format (drawable_id);
+  bpp    = babl_format_get_bytes_per_pixel (format);
+
+  ppm_kill (&brushppm);
+  ppm_new (&brushppm, w, h);
+  p = &brushppm;
+
+  rowstride = p->width * 3;
+
+  src_row = g_new (guchar, w * bpp);
+
+  src_buffer = gimp_drawable_get_buffer (drawable_id);
+
+  if (bpp == 3)
+    { /* RGB */
+      gint bpr = w * 3;
+      gint y2 = y1 + h;
+
+      for (row = 0, y = y1; y < y2; row++, y++)
+        {
+          gegl_buffer_get (src_buffer, GEGL_RECTANGLE (x1, y, w, 1), 1.0,
+                           format, src_row,
+                           GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+
+          memcpy (p->col + row*rowstride, src_row, bpr);
+        }
+    }
+  else
+    { /* RGBA (bpp > 3) GrayA (bpp == 2) or Gray */
+      gboolean is_gray = ((bpp > 3) ? TRUE : FALSE);
+      gint y2 = y1 + h;
+
+      for (row = 0, y = y1; y < y2; row++, y++)
+        {
+          guchar *tmprow = p->col + row * rowstride;
+          guchar *tmprow_ptr;
+	  gint x2 = x1 + w;
+
+          gegl_buffer_get (src_buffer, GEGL_RECTANGLE (x1, y, w, 1), 1.0,
+                           format, src_row,
+                           GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+
+          src = src_row;
+          tmprow_ptr = tmprow;
+          /* Possible micro-optimization here:
+           * src_end = src + src_rgn.bpp * w);
+           * for ( ; src < src_end ; src += src_rgn.bpp)
+           */
+          for (x = x1; x < x2; x++)
+            {
+              *(tmprow_ptr++) = src[0];
+              *(tmprow_ptr++) = src[is_gray ? 1 : 0];
+              *(tmprow_ptr++) = src[is_gray ? 2 : 0];
+              src += bpp;
+            }
+        }
+    }
+
+  g_object_unref (src_buffer);
+
+  g_free (src_row);
+
+  if (bpp >= 3)
+    pcvals.color_brushes = 1;
+  else
+    pcvals.color_brushes = 0;
+
+  brush_from_file = 0;
+  update_brush_preview (NULL);
+}
+
+#if 0
+void
+dummybrushdmenuselect (GtkWidget *w, gpointer data)
+{
+  ppm_kill (&brushppm);
+  ppm_new (&brushppm, 10,10);
+  brush_from_file = 0;
+  update_brush_preview (NULL);
+}
+#endif
+
+static void
+brushlistrefresh (void)
+{
+  gtk_list_store_clear (brush_list_store);
+  readdirintolist ("Brushes", brush_list, NULL);
+}
+
+static void
+savebrush_response (GtkWidget *dialog,
+                    gint       response_id,
+                    gpointer   data)
+{
+  if (response_id == GTK_RESPONSE_OK)
+    {
+      gchar *name = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
+
+      ppm_save (&brushppm, name);
+      brushlistrefresh ();
+
+      g_free (name);
+    }
+
+  gtk_widget_destroy (dialog);
+}
+
+static void
+savebrush (GtkWidget *wg,
+           gpointer   data)
+{
+  GtkWidget *dialog   = NULL;
+  GList     *thispath = parsepath ();
+  gchar     *path;
+
+  if (! PPM_IS_INITED (&brushppm))
+    {
+      g_message ( _("Can only save drawables!"));
+      return;
+    }
+
+  dialog =
+    gtk_file_chooser_dialog_new (_("Save Brush"),
+                                 GTK_WINDOW (gtk_widget_get_toplevel (wg)),
+                                 GTK_FILE_CHOOSER_ACTION_SAVE,
+
+                                 _("_Cancel"), GTK_RESPONSE_CANCEL,
+                                 _("_Save"),   GTK_RESPONSE_OK,
+
+                                 NULL);
+
+  gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
+  gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
+                                           GTK_RESPONSE_OK,
+                                           GTK_RESPONSE_CANCEL,
+                                           -1);
+
+  gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog),
+                                                  TRUE);
+
+  path = g_build_filename ((gchar *)thispath->data, "Brushes", NULL);
+
+  gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog), path);
+
+  g_free (path);
+
+  g_signal_connect (dialog, "destroy",
+                    G_CALLBACK (gtk_widget_destroyed),
+                    &dialog);
+  g_signal_connect (dialog, "response",
+                    G_CALLBACK (savebrush_response),
+                    NULL);
+
+  gtk_widget_show (dialog);
+}
+
+static gboolean
+validdrawable (gint32    imageid,
+               gint32    drawableid,
+               gpointer  data)
+{
+  return (gimp_drawable_is_rgb (drawableid) ||
+          gimp_drawable_is_gray (drawableid));
+}
+
+/*
+ * This function caches the last result. Call it with fn as NULL, to
+ * free the arguments.
+ * */
+void
+brush_reload (const gchar *fn,
+              ppm_t       *p)
+{
+  static char  lastfn[256] = "";
+  static ppm_t cache       = {0, 0, NULL};
+
+  if (fn == NULL)
+    {
+      ppm_kill (&cache);
+      lastfn[0] = '\0';
+      return;
+    }
+
+  if (strcmp (fn, lastfn))
+    {
+      g_strlcpy (lastfn, fn, sizeof (lastfn));
+      ppm_kill (&cache);
+      ppm_load (fn, &cache);
+    }
+  ppm_copy (&cache, p);
+  set_colorbrushes (fn);
+}
+
+static void
+padbrush (ppm_t *p,
+          gint   width,
+          gint   height)
+{
+  guchar black[3] = {0, 0, 0};
+
+  int left   = (width - p->width) / 2;
+  int right  = (width - p->width) - left;
+  int top    = (height - p->height) / 2;
+  int bottom = (height - p->height) - top;
+
+  ppm_pad (p, left, right, top, bottom, black);
+}
+
+static void
+update_brush_preview (const gchar *fn)
+{
+  gint   i, j;
+  guchar *preview_image;
+
+  if (fn)
+    brush_from_file = 1;
+
+  preview_image = g_new0 (guchar, 100*100);
+
+  if (!fn && brush_from_file)
+    {
+      /* preview_image is already initialized to our liking. */
+    }
+  else
+    {
+      double sc;
+      ppm_t  p = {0, 0, NULL};
+      guchar gammatable[256];
+      int    newheight;
+
+      if (brush_from_file)
+        brush_reload (fn, &p);
+      else if (PPM_IS_INITED (&brushppm))
+        ppm_copy (&brushppm, &p);
+
+      set_colorbrushes (fn);
+
+      sc = gtk_adjustment_get_value (brush_gamma_adjust);
+      if (sc != 1.0)
+        for (i = 0; i < 256; i++)
+          gammatable[i] = pow (i / 255.0, sc) * 255;
+      else
+        for (i = 0; i < 256; i++)
+          gammatable[i] = i;
+
+      newheight = p.height *
+        pow (10, gtk_adjustment_get_value (brush_aspect_adjust));
+
+      sc = p.width > newheight ? p.width : newheight;
+      sc = 100.0 / sc;
+      resize_fast (&p, p.width*sc,newheight*sc);
+      padbrush (&p, 100, 100);
+      for (i = 0; i < 100; i++)
+        {
+          int k = i * p.width * 3;
+          if (i < p.height)
+            for (j = 0; j < p.width; j++)
+              preview_image[i*100+j] = gammatable[p.col[k + j * 3]];
+        }
+      ppm_kill (&p);
+    }
+  gimp_preview_area_draw (GIMP_PREVIEW_AREA (brush_preview),
+                          0, 0, 100, 100,
+                          GIMP_GRAY_IMAGE,
+                          preview_image,
+                          100);
+
+  g_free (preview_image);
+}
+
+
+/*
+ * "force" implies here to change the brush even if it was the same.
+ * It is used for the initialization of the preview.
+ * */
+static void
+brush_select (GtkTreeSelection *selection, gboolean force)
+{
+  GtkTreeIter   iter;
+  GtkTreeModel *model;
+  gchar        *fname = NULL;
+  gchar        *brush = NULL;
+
+  if (brush_dont_update)
+    goto cleanup;
+
+  if (brush_from_file == 0)
+    {
+      update_brush_preview (NULL);
+      goto cleanup;
+    }
+
+  if (gtk_tree_selection_get_selected (selection, &model, &iter))
+    {
+      gtk_tree_model_get (model, &iter, 0, &brush, -1);
+
+      /* Check if the same brush was selected twice, and if so
+       * break. Otherwise, the brush gamma and stuff would have been
+       * reset.
+       * */
+      if (last_selected_brush == NULL)
+        {
+          last_selected_brush = g_strdup (brush);
+        }
+      else
+        {
+          if (!strcmp (last_selected_brush, brush))
+            {
+              if (!force)
+                {
+                  goto cleanup;
+                }
+            }
+          else
+            {
+              g_free (last_selected_brush);
+              last_selected_brush = g_strdup (brush);
+            }
+        }
+
+      brush_dont_update = TRUE;
+      gtk_adjustment_set_value (brush_gamma_adjust, 1.0);
+      gtk_adjustment_set_value (brush_aspect_adjust, 0.0);
+      brush_dont_update = FALSE;
+
+      if (brush)
+        {
+          fname = g_build_filename ("Brushes", brush, NULL);
+
+          g_strlcpy (pcvals.selected_brush,
+                     fname, sizeof (pcvals.selected_brush));
+
+          update_brush_preview (fname);
+
+        }
+    }
+cleanup:
+  g_free (fname);
+  g_free (brush);
+}
+
+static void
+brush_select_file (GtkTreeSelection *selection, gpointer data)
+{
+  brush_from_file = 1;
+  preset_save_button_set_sensitive (TRUE);
+  brush_select (selection, FALSE);
+}
+
+static void
+brush_preview_size_allocate (GtkWidget *preview)
+{
+  GtkTreeSelection *selection;
+
+  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (brush_list));
+  brush_select (selection, TRUE);
+}
+
+static void
+brush_asepct_adjust_cb (GtkWidget *w, gpointer data)
+{
+  gimp_double_adjustment_update (GTK_ADJUSTMENT (w), data);
+  update_brush_preview (pcvals.selected_brush);
+}
+
+void
+create_brushpage (GtkNotebook *notebook)
+{
+  GtkWidget        *box1, *box2, *box3, *thispage;
+  GtkWidget        *view;
+  GtkWidget        *tmpw, *table;
+  GtkWidget        *frame;
+  GtkWidget        *combo;
+  GtkWidget        *label;
+  GtkSizeGroup     *group;
+  GtkTreeSelection *selection;
+
+  label = gtk_label_new_with_mnemonic (_("_Brush"));
+
+  thispage = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+  gtk_container_set_border_width (GTK_CONTAINER (thispage), 12);
+  gtk_widget_show (thispage);
+
+  box1 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
+  gtk_box_pack_start (GTK_BOX (thispage), box1, TRUE,TRUE,0);
+  gtk_widget_show (box1);
+
+  view = create_one_column_list (box1, brush_select_file);
+  brush_list = view;
+  brush_list_store =
+      GTK_LIST_STORE (gtk_tree_view_get_model (GTK_TREE_VIEW (view)));
+
+  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (view));
+
+  box2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+  gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
+  gtk_widget_show (box2);
+
+  frame = gtk_frame_new (NULL);
+  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
+  gtk_box_pack_start (GTK_BOX (box2), frame, FALSE, FALSE, 0);
+  gtk_widget_show (frame);
+
+  brush_preview = tmpw = gimp_preview_area_new ();
+  gtk_widget_set_size_request (brush_preview, 100, 100);
+  gtk_container_add (GTK_CONTAINER (frame), tmpw);
+  gtk_widget_show (tmpw);
+  g_signal_connect (brush_preview, "size-allocate",
+                    G_CALLBACK (brush_preview_size_allocate), NULL);
+
+  box3 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
+  gtk_box_pack_end (GTK_BOX (box2), box3, FALSE, FALSE,0);
+  gtk_widget_show (box3);
+
+  tmpw = gtk_label_new (_("Gamma:"));
+  gtk_label_set_xalign (GTK_LABEL (tmpw), 0.0);
+  gtk_box_pack_start (GTK_BOX (box3), tmpw, FALSE, FALSE,0);
+  gtk_widget_show (tmpw);
+
+  brush_gamma_adjust = GTK_ADJUSTMENT (gtk_adjustment_new (pcvals.brushgamma,
+                                                           0.5, 3.0, 0.1, 0.1, 1.0));
+  tmpw = gtk_scale_new (GTK_ORIENTATION_HORIZONTAL, brush_gamma_adjust);
+  gtk_widget_set_size_request (GTK_WIDGET (tmpw), 100, 30);
+  gtk_scale_set_draw_value (GTK_SCALE (tmpw), FALSE);
+  gtk_scale_set_digits (GTK_SCALE (tmpw), 2);
+  gtk_box_pack_start (GTK_BOX (box3), tmpw, FALSE, FALSE, 0);
+  gtk_widget_show (tmpw);
+  g_signal_connect_swapped (brush_gamma_adjust, "value-changed",
+                            G_CALLBACK (update_brush_preview),
+                            pcvals.selected_brush);
+
+  gimp_help_set_help_data
+    (tmpw, _("Changes the gamma (brightness) of the selected brush"), NULL);
+
+  box3 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+  gtk_box_pack_start (GTK_BOX (thispage), box3, FALSE, FALSE,0);
+  gtk_widget_show (box3);
+
+  group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
+
+  tmpw = gtk_label_new (_("Select:"));
+  gtk_label_set_xalign (GTK_LABEL (tmpw), 0.0);
+  gtk_box_pack_start (GTK_BOX (box3), tmpw, FALSE, FALSE, 0);
+  gtk_widget_show (tmpw);
+
+  gtk_size_group_add_widget (group, tmpw);
+  g_object_unref (group);
+
+  combo = gimp_drawable_combo_box_new (validdrawable, NULL);
+  gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), -1,
+                              G_CALLBACK (brushdmenuselect),
+                              NULL);
+
+  gtk_box_pack_start (GTK_BOX (box3), combo, TRUE, TRUE, 0);
+  gtk_widget_show (combo);
+
+  tmpw = gtk_button_new_with_mnemonic (_("Save _as"));
+  gtk_box_pack_start (GTK_BOX (box3),tmpw, FALSE, FALSE, 0);
+  g_signal_connect (tmpw, "clicked", G_CALLBACK (savebrush), NULL);
+  gtk_widget_show (tmpw);
+
+  table = gtk_table_new (2, 3, FALSE);
+  gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+  gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+  gtk_box_pack_start (GTK_BOX (thispage), table, FALSE, FALSE, 0);
+  gtk_widget_show (table);
+
+  brush_aspect_adjust = (GtkAdjustment *)
+    gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
+                          _("Aspect ratio:"),
+                          150, -1, pcvals.brush_aspect,
+                          -1.0, 1.0, 0.1, 0.1, 2,
+                          TRUE, 0, 0,
+                          _("Specifies the aspect ratio of the brush"),
+                          NULL);
+  gtk_size_group_add_widget (group,
+                             GIMP_SCALE_ENTRY_LABEL (brush_aspect_adjust));
+  g_signal_connect (brush_aspect_adjust, "value-changed",
+                    G_CALLBACK (brush_asepct_adjust_cb), &pcvals.brush_aspect);
+
+  brush_relief_adjust = (GtkAdjustment *)
+    gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
+                          _("Relief:"),
+                          150, -1, pcvals.brush_relief,
+                          0.0, 100.0, 1.0, 10.0, 1,
+                          TRUE, 0, 0,
+                          _("Specifies the amount of embossing to apply to the image (in percent)"),
+                          NULL);
+  gtk_size_group_add_widget (group,
+                             GIMP_SCALE_ENTRY_LABEL (brush_relief_adjust));
+  g_signal_connect (brush_relief_adjust, "value-changed",
+                    G_CALLBACK (gimp_double_adjustment_update),
+                    &pcvals.brush_relief);
+
+  brush_select (selection, FALSE);
+  readdirintolist ("Brushes", view, pcvals.selected_brush);
+
+  /*
+   * This is so the "changed signal won't get sent to the brushes' list
+   * and reset the gamma and stuff.
+   * */
+  gtk_widget_grab_focus (brush_list);
+
+  gtk_notebook_append_page_menu (notebook, thispage, label, NULL);
+}
+