[gimp] app: add custom GUI for gegl:panorama-projection

[N/A <ell src gnome org>]

commit 698253329228d80a482997186c303d7c210ed3ae
Author: Ell <ell_se yahoo com>
Date:   Tue Apr 10 09:53:42 2018 -0400

    app: add custom GUI for gegl:panorama-projection
    
    ... which uses a gyroscope controller to control the op's rotation
    angles and zoom.

 app/propgui/Makefile.am                       |    2 +
 app/propgui/gimppropgui-panorama-projection.c |  144 +++++++++++++++++++++++++
 app/propgui/gimppropgui-panorama-projection.h |   35 ++++++
 app/propgui/gimppropgui.c                     |    3 +
 po/POTFILES.in                                |    1 +
 5 files changed, 185 insertions(+), 0 deletions(-)
---
diff --git a/app/propgui/Makefile.am b/app/propgui/Makefile.am
index ebfbeed..a15c04b 100644
--- a/app/propgui/Makefile.am
+++ b/app/propgui/Makefile.am
@@ -37,6 +37,8 @@ libapppropgui_a_SOURCES = \
        gimppropgui-generic.h                   \
        gimppropgui-hue-saturation.c            \
        gimppropgui-hue-saturation.h            \
+       gimppropgui-panorama-projection.c       \
+       gimppropgui-panorama-projection.h       \
        gimppropgui-recursive-transform.c       \
        gimppropgui-recursive-transform.h       \
        gimppropgui-shadows-highlights.c        \
diff --git a/app/propgui/gimppropgui-panorama-projection.c b/app/propgui/gimppropgui-panorama-projection.c
new file mode 100644
index 0000000..6bb0ad1
--- /dev/null
+++ b/app/propgui/gimppropgui-panorama-projection.c
@@ -0,0 +1,144 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
+ *
+ * gimppropgui-panorama-projection.c
+ * Copyright (C) 2018 Ell
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "propgui-types.h"
+
+#include "core/gimpcontext.h"
+
+#include "gimppropgui.h"
+#include "gimppropgui-generic.h"
+#include "gimppropgui-panorama-projection.h"
+
+#include "gimp-intl.h"
+
+
+static void
+gyroscope_callback (GObject       *config,
+                    GeglRectangle *area,
+                    gdouble        yaw,
+                    gdouble        pitch,
+                    gdouble        roll,
+                    gdouble        zoom,
+                    gboolean       invert)
+{
+  g_object_set_data_full (G_OBJECT (config), "area",
+                          g_memdup (area, sizeof (GeglRectangle)),
+                          (GDestroyNotify) g_free);
+
+  g_object_set (config,
+                "pan",     -yaw,
+                "tilt",    -pitch,
+                "spin",    -roll,
+                "zoom",    CLAMP (100.0 / zoom, 0.01, 1000.0),
+                "inverse", invert,
+                NULL);
+}
+
+static void
+config_notify (GObject          *config,
+               const GParamSpec *pspec,
+               gpointer          set_data)
+{
+  GimpControllerGyroscopeCallback  set_func;
+  GeglRectangle                   *area;
+  gdouble                          pan;
+  gdouble                          tilt;
+  gdouble                          spin;
+  gdouble                          zoom;
+  gboolean                         inverse;
+
+  set_func = g_object_get_data (G_OBJECT (config), "set-func");
+  area     = g_object_get_data (G_OBJECT (config), "area");
+
+  g_object_get (config,
+                "pan",     &pan,
+                "tilt",    &tilt,
+                "spin",    &spin,
+                "zoom",    &zoom,
+                "inverse", &inverse,
+                NULL);
+
+  set_func (set_data,
+            area,
+            -pan, -tilt, -spin,
+            100.0 / zoom,
+            inverse);
+}
+
+GtkWidget *
+_gimp_prop_gui_new_panorama_projection (GObject                   *config,
+                                        GParamSpec               **param_specs,
+                                        guint                      n_param_specs,
+                                        GeglRectangle             *area,
+                                        GimpContext               *context,
+                                        GimpCreatePickerFunc       create_picker_func,
+                                        GimpCreateControllerFunc   create_controller_func,
+                                        gpointer                   creator)
+{
+  GtkWidget *vbox;
+
+  g_return_val_if_fail (G_IS_OBJECT (config), NULL);
+  g_return_val_if_fail (param_specs != NULL, NULL);
+  g_return_val_if_fail (n_param_specs > 0, NULL);
+  g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
+
+  vbox = _gimp_prop_gui_new_generic (config,
+                                     param_specs, n_param_specs,
+                                     area, context,
+                                     create_picker_func,
+                                     create_controller_func,
+                                     creator);
+
+
+  if (create_controller_func)
+    {
+      GCallback set_func;
+      gpointer  set_data;
+
+      set_func = create_controller_func (creator,
+                                         GIMP_CONTROLLER_TYPE_GYROSCOPE,
+                                         _("Panorama Projection: "),
+                                         (GCallback) gyroscope_callback,
+                                         config,
+                                         &set_data);
+
+      g_object_set_data (G_OBJECT (config), "set-func", set_func);
+
+      g_object_set_data_full (G_OBJECT (config), "area",
+                              g_memdup (area, sizeof (GeglRectangle)),
+                              (GDestroyNotify) g_free);
+
+      config_notify (config, NULL, set_data);
+
+      g_signal_connect (config, "notify",
+                        G_CALLBACK (config_notify),
+                        set_data);
+    }
+
+  return vbox;
+}
diff --git a/app/propgui/gimppropgui-panorama-projection.h b/app/propgui/gimppropgui-panorama-projection.h
new file mode 100644
index 0000000..6b170d2
--- /dev/null
+++ b/app/propgui/gimppropgui-panorama-projection.h
@@ -0,0 +1,35 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
+ *
+ * gimppropgui-panorama-projection.h
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_PROP_GUI_PANORAMA_PROJECTION_H__
+#define __GIMP_PROP_GUI_PANORAMA_PROJECTION_H__
+
+
+GtkWidget *
+_gimp_prop_gui_new_panorama_projection (GObject                   *config,
+                                        GParamSpec               **param_specs,
+                                        guint                      n_param_specs,
+                                        GeglRectangle             *area,
+                                        GimpContext               *context,
+                                        GimpCreatePickerFunc       create_picker_func,
+                                        GimpCreateControllerFunc   create_controller_func,
+                                        gpointer                   creator);
+
+
+#endif /* __GIMP_PROP_GUI_PANORAMA_PROJECTION_H__ */
diff --git a/app/propgui/gimppropgui.c b/app/propgui/gimppropgui.c
index 1369779..5f63fc7 100644
--- a/app/propgui/gimppropgui.c
+++ b/app/propgui/gimppropgui.c
@@ -54,6 +54,7 @@
 #include "gimppropgui-eval.h"
 #include "gimppropgui-generic.h"
 #include "gimppropgui-hue-saturation.h"
+#include "gimppropgui-panorama-projection.h"
 #include "gimppropgui-recursive-transform.h"
 #include "gimppropgui-shadows-highlights.h"
 #include "gimppropgui-spiral.h"
@@ -451,6 +452,8 @@ gui_new_funcs[] =
     _gimp_prop_gui_new_channel_mixer },
   { "GimpGegl-gegl-diffraction-patterns-config",
     _gimp_prop_gui_new_diffraction_patterns },
+  { "GimpGegl-gegl-panorama-projection-config",
+    _gimp_prop_gui_new_panorama_projection },
   { "GimpGegl-gegl-recursive-transform-config",
     _gimp_prop_gui_new_recursive_transform },
   { "GimpGegl-gegl-shadows-highlights-config",
diff --git a/po/POTFILES.in b/po/POTFILES.in
index a538526..91163af 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -385,6 +385,7 @@ app/propgui/gimppropgui-convolution-matrix.c
 app/propgui/gimppropgui-diffraction-patterns.c
 app/propgui/gimppropgui-generic.c
 app/propgui/gimppropgui-hue-saturation.c
+app/propgui/gimppropgui-panorama-projection.c
 app/propgui/gimppropgui-recursive-transform.c
 app/propgui/gimppropgui-shadows-highlights.c
 app/propgui/gimppropgui-spiral.c