Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 191 insertions, 0 deletions

diff --git a/plug-ins/gimpressionist/preview.c b/plug-ins/gimpressionist/preview.c
new file mode 100644
index 0000000..3619782
--- /dev/null
+++ b/plug-ins/gimpressionist/preview.c
@@ -0,0 +1,191 @@
+/* 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 <libgimp/gimpui.h>
+
+#include "gimpressionist.h"
+#include "ppmtool.h"
+#include "infile.h"
+#include "preview.h"
+
+#include "libgimp/stdplugins-intl.h"
+
+
+static GtkWidget *preview       = NULL;
+static GtkWidget *previewbutton = NULL;
+
+void
+preview_set_button_label (const gchar *text)
+{
+  g_object_set (previewbutton,
+                "label",         text,
+                "use-underline", TRUE,
+                NULL);
+}
+
+static void
+drawalpha (ppm_t *p, ppm_t *a)
+{
+  int    x, y, g;
+  double v;
+  int    gridsize = 16;
+  int     rowstride = p->width * 3;
+
+  for (y = 0; y < p->height; y++)
+    {
+      for (x = 0; x < p->width; x++)
+        {
+          int k = y * rowstride + x * 3;
+
+          if (!a->col[k])
+            continue;
+
+          v = 1.0 - a->col[k] / 255.0;
+          g = ((x / gridsize + y / gridsize) % 2) * 60 + 100;
+          p->col[k+0] *= v;
+          p->col[k+1] *= v;
+          p->col[k+2] *= v;
+          v = 1.0 - v;
+          p->col[k+0] += g*v;
+          p->col[k+1] += g*v;
+          p->col[k+2] += g*v;
+        }
+    }
+}
+
+static ppm_t preview_ppm      = {0, 0, NULL};
+static ppm_t alpha_ppm        = {0, 0, NULL};
+static ppm_t backup_ppm       = {0, 0, NULL};
+static ppm_t alpha_backup_ppm = {0, 0, NULL};
+
+void
+preview_free_resources (void)
+{
+  ppm_kill (&preview_ppm);
+  ppm_kill (&alpha_ppm);
+  ppm_kill (&backup_ppm);
+  ppm_kill (&alpha_backup_ppm);
+}
+
+void
+updatepreview (GtkWidget *wg, gpointer d)
+{
+  if (!PPM_IS_INITED (&backup_ppm))
+    {
+      infile_copy_to_ppm (&backup_ppm);
+      if ((backup_ppm.width != PREVIEWSIZE) ||
+          (backup_ppm.height != PREVIEWSIZE))
+        resize_fast (&backup_ppm, PREVIEWSIZE, PREVIEWSIZE);
+      if (img_has_alpha)
+        {
+          infile_copy_alpha_to_ppm (&alpha_backup_ppm);
+          if ((alpha_backup_ppm.width != PREVIEWSIZE) ||
+              (alpha_backup_ppm.height != PREVIEWSIZE))
+            resize_fast (&alpha_backup_ppm, PREVIEWSIZE, PREVIEWSIZE);
+        }
+    }
+
+  if (!PPM_IS_INITED (&preview_ppm))
+    {
+      ppm_copy (&backup_ppm, &preview_ppm);
+
+      if (img_has_alpha)
+        ppm_copy (&alpha_backup_ppm, &alpha_ppm);
+    }
+
+  if (d)
+    {
+      store_values ();
+
+      if (GPOINTER_TO_INT (d) != 2)
+        repaint (&preview_ppm, &alpha_ppm);
+    }
+
+  if (img_has_alpha)
+    drawalpha (&preview_ppm, &alpha_ppm);
+
+  gimp_preview_area_draw (GIMP_PREVIEW_AREA (preview),
+                          0, 0, PREVIEWSIZE, PREVIEWSIZE,
+                          GIMP_RGB_IMAGE,
+                          preview_ppm.col,
+                          PREVIEWSIZE * 3);
+
+  ppm_kill (&preview_ppm);
+  if (img_has_alpha)
+    ppm_kill (&alpha_ppm);
+}
+
+static void
+preview_size_allocate (GtkWidget *preview)
+{
+  updatepreview (preview, GINT_TO_POINTER (0));
+}
+
+GtkWidget *
+create_preview (void)
+{
+  GtkWidget *hbox;
+  GtkWidget *vbox;
+  GtkWidget *frame;
+  GtkWidget *button;
+
+  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
+
+  frame = gtk_frame_new (NULL);
+  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
+  gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 5);
+  gtk_widget_show (frame);
+
+  preview = gimp_preview_area_new ();
+  gtk_widget_set_size_request (preview, PREVIEWSIZE, PREVIEWSIZE);
+
+  gtk_container_add (GTK_CONTAINER (frame), preview);
+  gtk_widget_show (preview);
+  /* This is so the preview will be displayed when the dialog is invoked. */
+  g_signal_connect (preview, "size-allocate",
+                    G_CALLBACK (preview_size_allocate), NULL);
+
+  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+  gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
+  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
+  gtk_widget_show (hbox);
+
+  previewbutton = button = gtk_button_new_with_mnemonic (_("_Update"));
+  g_signal_connect (button, "clicked",
+                    G_CALLBACK (updatepreview), (gpointer) 1);
+  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
+  gtk_widget_show (button);
+  gimp_help_set_help_data (button,
+                           _("Refresh the Preview window"), NULL);
+
+  button = gtk_button_new_with_mnemonic (_("_Reset"));
+  g_signal_connect (button, "clicked",
+                    G_CALLBACK (updatepreview), (gpointer) 2);
+  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
+  gtk_widget_show (button);
+  gimp_help_set_help_data (button,
+                           _("Revert to the original image"), NULL);
+
+  return vbox;
+}