diff --git a/about-dialog.c b/about-dialog.c
new file mode 100644
index 0000000..c188122
--- /dev/null
+++ b/about-dialog.c
@@ -0,0 +1,489 @@
+/* PIKA - Photo and Image Kooker Application
+ * a rebranding of The GNU Image Manipulation Program (created with heckimp)
+ * A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
+ *
+ * Original copyright, applying to most contents (license remains unchanged):
+ * 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 .
+ */
+
+#include "config.h"
+
+#include
+
+#include
+#include
+
+#include "libpikabase/pikabase.h"
+#include "libpikamath/pikamath.h"
+#include "libpikawidgets/pikawidgets.h"
+
+#include "dialogs-types.h"
+
+#include "config/pikacoreconfig.h"
+
+#include "widgets/pikawidgets-utils.h"
+
+#include "about.h"
+#include "git-version.h"
+
+#include "about-dialog.h"
+#include "pika-update.h"
+#include "pika-version.h"
+
+#include "pika-intl.h"
+
+
+typedef struct
+{
+ GtkWidget *dialog;
+
+ Pika *pika;
+
+ GtkWidget *update_frame;
+ PikaCoreConfig *config;
+
+ GtkWidget *anim_area;
+ PangoLayout *layout;
+
+ guint timer;
+
+ gint index;
+ gint animstep;
+ gint state;
+ gboolean visible;
+} PikaAboutDialog;
+
+
+static void about_dialog_map (GtkWidget *widget,
+ PikaAboutDialog *dialog);
+static void about_dialog_unmap (GtkWidget *widget,
+ PikaAboutDialog *dialog);
+static GdkPixbuf * about_dialog_load_logo (void);
+static void about_dialog_add_animation (GtkWidget *vbox,
+ PikaAboutDialog *dialog);
+static void about_dialog_add_update (PikaAboutDialog *dialog,
+ PikaCoreConfig *config);
+static gboolean about_dialog_anim_draw (GtkWidget *widget,
+ cairo_t *cr,
+ PikaAboutDialog *dialog);
+static void about_dialog_reshuffle (PikaAboutDialog *dialog);
+static gboolean about_dialog_timer (gpointer data);
+
+#ifdef PIKA_UNSTABLE
+static void about_dialog_add_unstable_message
+ (GtkWidget *vbox);
+#endif /* PIKA_UNSTABLE */
+
+static void about_dialog_last_release_changed
+ (PikaCoreConfig *config,
+ const GParamSpec *pspec,
+ PikaAboutDialog *dialog);
+static void about_dialog_download_clicked
+ (GtkButton *button,
+ const gchar *link);
+
+GtkWidget *
+about_dialog_create (Pika *pika,
+ PikaCoreConfig *config)
+{
+ static PikaAboutDialog dialog;
+
+ if (! dialog.dialog)
+ {
+ GtkWidget *widget;
+ GtkWidget *container;
+ GdkPixbuf *pixbuf;
+ GList *children;
+ gchar *copyright;
+ gchar *version;
+
+ dialog.pika = pika;
+ dialog.config = config;
+
+ pixbuf = about_dialog_load_logo ();
+
+ copyright = g_strdup_printf (PIKA_COPYRIGHT, PIKA_GIT_LAST_COMMIT_YEAR);
+ if (pika_version_get_revision () > 0)
+ /* Translators: the %s is PIKA version, the %d is the
+ * installer/package revision.
+ * For instance: "2.10.18 (revision 2)"
+ */
+ version = g_strdup_printf (_("%s (revision %d)"), PIKA_VERSION,
+ pika_version_get_revision ());
+ else
+ version = g_strdup (PIKA_VERSION);
+
+ widget = g_object_new (GTK_TYPE_ABOUT_DIALOG,
+ "role", "pika-about",
+ "window-position", GTK_WIN_POS_CENTER,
+ "title", _("About PIKA"),
+ "program-name", PIKA_ACRONYM,
+ "version", version,
+ "copyright", copyright,
+ "comments", PIKA_NAME,
+ "license", PIKA_LICENSE,
+ "wrap-license", TRUE,
+ "logo", pixbuf,
+ "website", "https://heckin.technology/AlderconeStudio/PIKApp/",
+ "website-label", _("Visit the PIKA website"),
+ NULL);
+
+ if (pixbuf)
+ g_object_unref (pixbuf);
+
+ g_free (copyright);
+ g_free (version);
+
+ g_set_weak_pointer (&dialog.dialog, widget);
+
+ g_signal_connect (widget, "response",
+ G_CALLBACK (gtk_widget_destroy),
+ NULL);
+
+ g_signal_connect (widget, "map",
+ G_CALLBACK (about_dialog_map),
+ &dialog);
+ g_signal_connect (widget, "unmap",
+ G_CALLBACK (about_dialog_unmap),
+ &dialog);
+
+ /* kids, don't try this at home! */
+ container = gtk_dialog_get_content_area (GTK_DIALOG (widget));
+ children = gtk_container_get_children (GTK_CONTAINER (container));
+
+ if (GTK_IS_BOX (children->data))
+ {
+ about_dialog_add_animation (children->data, &dialog);
+#ifdef PIKA_UNSTABLE
+ about_dialog_add_unstable_message (children->data);
+#endif /* PIKA_UNSTABLE */
+ about_dialog_add_update (&dialog, config);
+ }
+ else
+ g_warning ("%s: ooops, no box in this container?", G_STRLOC);
+
+ g_list_free (children);
+ }
+
+ return dialog.dialog;
+}
+
+static void
+about_dialog_map (GtkWidget *widget,
+ PikaAboutDialog *dialog)
+{
+ pika_update_refresh (dialog->config);
+
+ if (dialog->layout && dialog->timer == 0)
+ {
+ dialog->state = 0;
+ dialog->index = 0;
+ dialog->animstep = 0;
+ dialog->visible = FALSE;
+
+ about_dialog_reshuffle (dialog);
+
+ dialog->timer = g_timeout_add (800, about_dialog_timer, dialog);
+ }
+
+#ifdef G_OS_WIN32
+ pika_window_set_title_bar_theme (dialog->pika, widget, FALSE);
+#endif
+}
+
+static void
+about_dialog_unmap (GtkWidget *widget,
+ PikaAboutDialog *dialog)
+{
+ if (dialog->timer)
+ {
+ g_source_remove (dialog->timer);
+ dialog->timer = 0;
+ }
+}
+
+static GdkPixbuf *
+about_dialog_load_logo (void)
+{
+ GdkPixbuf *pixbuf = NULL;
+ GFile *file;
+ GInputStream *input;
+
+ file = pika_data_directory_file ("images",
+#ifdef PIKA_UNSTABLE
+ "pika-devel-logo.png",
+#else
+ "pika-logo.png",
+#endif
+ NULL);
+
+ input = G_INPUT_STREAM (g_file_read (file, NULL, NULL));
+ g_object_unref (file);
+
+ if (input)
+ {
+ pixbuf = gdk_pixbuf_new_from_stream (input, NULL, NULL);
+ g_object_unref (input);
+ }
+
+ return pixbuf;
+}
+
+static void
+about_dialog_add_animation (GtkWidget *vbox,
+ PikaAboutDialog *dialog)
+{
+ gint height;
+
+ dialog->anim_area = gtk_drawing_area_new ();
+ gtk_box_pack_start (GTK_BOX (vbox), dialog->anim_area, FALSE, FALSE, 0);
+ gtk_box_reorder_child (GTK_BOX (vbox), dialog->anim_area, 5);
+ gtk_widget_show (dialog->anim_area);
+
+ dialog->layout = gtk_widget_create_pango_layout (dialog->anim_area, NULL);
+ g_object_weak_ref (G_OBJECT (dialog->anim_area),
+ (GWeakNotify) g_object_unref, dialog->layout);
+
+ pango_layout_get_pixel_size (dialog->layout, NULL, &height);
+
+ gtk_widget_set_size_request (dialog->anim_area, -1, 2 * height);
+
+ g_signal_connect (dialog->anim_area, "draw",
+ G_CALLBACK (about_dialog_anim_draw),
+ dialog);
+}
+
+static void
+about_dialog_add_update (PikaAboutDialog *dialog,
+ PikaCoreConfig *config)
+{
+}
+
+static void
+about_dialog_reshuffle (PikaAboutDialog *dialog)
+{
+}
+
+static gboolean
+about_dialog_anim_draw (GtkWidget *widget,
+ cairo_t *cr,
+ PikaAboutDialog *dialog)
+{
+ GtkStyleContext *style = gtk_widget_get_style_context (widget);
+ GtkAllocation allocation;
+ GdkRGBA color;
+ gdouble alpha = 0.0;
+ gint x, y;
+ gint width, height;
+
+ if (! dialog->visible)
+ return FALSE;
+
+ if (dialog->animstep < 16)
+ {
+ alpha = (gfloat) dialog->animstep / 15.0;
+ }
+ else if (dialog->animstep < 18)
+ {
+ alpha = 1.0;
+ }
+ else if (dialog->animstep < 33)
+ {
+ alpha = 1.0 - ((gfloat) (dialog->animstep - 17)) / 15.0;
+ }
+
+ gtk_style_context_get_color (style, gtk_style_context_get_state (style),
+ &color);
+ gdk_cairo_set_source_rgba (cr, &color);
+
+ gtk_widget_get_allocation (widget, &allocation);
+ pango_layout_get_pixel_size (dialog->layout, &width, &height);
+
+ x = (allocation.width - width) / 2;
+ y = (allocation.height - height) / 2;
+
+ cairo_move_to (cr, x, y);
+
+ cairo_push_group (cr);
+
+ pango_cairo_show_layout (cr, dialog->layout);
+
+ cairo_pop_group_to_source (cr);
+ cairo_paint_with_alpha (cr, alpha);
+
+ return FALSE;
+}
+
+static gchar *
+insert_spacers (const gchar *string)
+{
+ GString *str = g_string_new (NULL);
+ gchar *normalized;
+ gchar *ptr;
+ gunichar unichr;
+
+ normalized = g_utf8_normalize (string, -1, G_NORMALIZE_DEFAULT_COMPOSE);
+ ptr = normalized;
+
+ while ((unichr = g_utf8_get_char (ptr)))
+ {
+ g_string_append_unichar (str, unichr);
+ g_string_append_unichar (str, 0x200b); /* ZERO WIDTH SPACE */
+ ptr = g_utf8_next_char (ptr);
+ }
+
+ g_free (normalized);
+
+ return g_string_free (str, FALSE);
+}
+
+static void
+decorate_text (PikaAboutDialog *dialog,
+ gint anim_type,
+ gdouble time)
+{
+ const gchar *text;
+ const gchar *ptr;
+ gint letter_count = 0;
+ gint cluster_start, cluster_end;
+ gunichar unichr;
+ PangoAttrList *attrlist = NULL;
+ PangoAttribute *attr;
+ PangoRectangle irect = {0, 0, 0, 0};
+ PangoRectangle lrect = {0, 0, 0, 0};
+
+ text = pango_layout_get_text (dialog->layout);
+
+ g_return_if_fail (text != NULL);
+
+ attrlist = pango_attr_list_new ();
+
+ switch (anim_type)
+ {
+ case 0: /* Fade in */
+ break;
+
+ case 1: /* Fade in, spread */
+ ptr = text;
+
+ cluster_start = 0;
+
+ while ((unichr = g_utf8_get_char (ptr)))
+ {
+ ptr = g_utf8_next_char (ptr);
+ cluster_end = (ptr - text);
+
+ if (unichr == 0x200b)
+ {
+ lrect.width = (1.0 - time) * 15.0 * PANGO_SCALE + 0.5;
+ attr = pango_attr_shape_new (&irect, &lrect);
+ attr->start_index = cluster_start;
+ attr->end_index = cluster_end;
+ pango_attr_list_change (attrlist, attr);
+ }
+ cluster_start = cluster_end;
+ }
+ break;
+
+ case 2: /* Fade in, sinewave */
+ ptr = text;
+
+ cluster_start = 0;
+
+ while ((unichr = g_utf8_get_char (ptr)))
+ {
+ if (unichr == 0x200b)
+ {
+ cluster_end = ptr - text;
+ attr = pango_attr_rise_new ((1.0 -time) * 18000 *
+ sin (4.0 * time +
+ (float) letter_count * 0.7));
+ attr->start_index = cluster_start;
+ attr->end_index = cluster_end;
+ pango_attr_list_change (attrlist, attr);
+
+ letter_count++;
+ cluster_start = cluster_end;
+ }
+
+ ptr = g_utf8_next_char (ptr);
+ }
+ break;
+
+ default:
+ g_printerr ("Unknown animation type %d\n", anim_type);
+ }
+
+ pango_layout_set_attributes (dialog->layout, attrlist);
+ pango_attr_list_unref (attrlist);
+}
+
+static gboolean
+about_dialog_timer (gpointer data)
+{
+ return TRUE;
+}
+
+#ifdef PIKA_UNSTABLE
+
+static void
+about_dialog_add_unstable_message (GtkWidget *vbox)
+{
+ GtkWidget *label;
+ gchar *text;
+
+ text = g_strdup_printf (_("This is an unstable development release\n"
+ "commit %s"), PIKA_GIT_VERSION_ABBREV);
+ label = gtk_label_new (text);
+ g_free (text);
+
+ gtk_label_set_selectable (GTK_LABEL (label), TRUE);
+ gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_CENTER);
+ pika_label_set_attributes (GTK_LABEL (label),
+ PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
+ -1);
+ gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
+ gtk_box_reorder_child (GTK_BOX (vbox), label, 2);
+ gtk_widget_show (label);
+}
+
+#endif /* PIKA_UNSTABLE */
+
+static void
+about_dialog_last_release_changed (PikaCoreConfig *config,
+ const GParamSpec *pspec,
+ PikaAboutDialog *dialog)
+{
+ g_signal_handlers_disconnect_by_func (config,
+ (GCallback) about_dialog_last_release_changed,
+ dialog);
+ if (! dialog->dialog)
+ return;
+
+ about_dialog_add_update (dialog, config);
+}
+
+static void
+about_dialog_download_clicked (GtkButton *button,
+ const gchar *link)
+{
+ GtkWidget *window;
+
+ window = gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_WINDOW);
+
+ if (window)
+ gtk_show_uri_on_window (GTK_WINDOW (window), link, GDK_CURRENT_TIME, NULL);
+}
diff --git a/pika.yaml b/pika.yaml
index c947d8d..1c3df34 100644
--- a/pika.yaml
+++ b/pika.yaml
@@ -5,7 +5,10 @@ icon: pika.png
scalable: pika.svg
splash: pika-splash.png
url: https://heckin.technology/AlderconeStudio/PIKApp
-version: 2.99.0
+docsurl: https://heckin.technology/AlderconeStudio/PIKApp/wiki/
+donateurl: https://mastodon.art/@aldercone
+version: 0.0.0+GnuImp2.99.70
copyright: Aldercone Studio
shadow: pika-shadow.txt
-
+files:
+ about-dialog.c: app/dialogs/about-dialog.c