[gimp] app: add new GtkTreeView subclass GimpPlugInView

[Michael Natterer <mitch src gnome org>]

commit 7e239901dd60963907e99a7d13395e9f7723f791
Author: Michael Natterer <mitch gimp org>
Date:   Thu May 4 20:33:56 2017 +0200

    app: add new GtkTreeView subclass GimpPlugInView
    
    which takes a list of GimpPlugInProcedures and allows to choose
    between the plug-ins that implement these procedures.

 app/widgets/Makefile.am      |    2 +
 app/widgets/gimppluginview.c |  231 ++++++++++++++++++++++++++++++++++++++++++
 app/widgets/gimppluginview.h |   60 +++++++++++
 app/widgets/widgets-types.h  |    1 +
 po/POTFILES.in               |    1 +
 5 files changed, 295 insertions(+), 0 deletions(-)
---
diff --git a/app/widgets/Makefile.am b/app/widgets/Makefile.am
index bea870f..078e181 100644
--- a/app/widgets/Makefile.am
+++ b/app/widgets/Makefile.am
@@ -285,6 +285,8 @@ libappwidgets_a_sources = \
        gimppickablepopup.h             \
        gimppixbuf.c                    \
        gimppixbuf.h                    \
+       gimppluginview.c                \
+       gimppluginview.h                \
        gimppolar.c                     \
        gimppolar.h                     \
        gimppopup.c                     \
diff --git a/app/widgets/gimppluginview.c b/app/widgets/gimppluginview.c
new file mode 100644
index 0000000..6f00fac
--- /dev/null
+++ b/app/widgets/gimppluginview.c
@@ -0,0 +1,231 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimppluginview.c
+ * Copyright (C) 2017  Michael Natterer <mitch gimp org>
+ * Copyright (C) 2004  Sven Neumann <sven gimp org>
+ *
+ * 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 <gtk/gtk.h>
+#include <gegl.h>
+
+#include "libgimpconfig/gimpconfig.h"
+
+#include "widgets-types.h"
+
+#include "core/gimpmarshal.h"
+
+#include "plug-in/gimppluginprocedure.h"
+
+#include "gimppluginview.h"
+
+#include "gimp-intl.h"
+
+
+enum
+{
+  COLUMN_FILE,
+  COLUMN_PATH,
+  N_COLUMNS
+};
+
+enum
+{
+  CHANGED,
+  LAST_SIGNAL
+};
+
+
+static void  gimp_plug_in_view_finalize          (GObject          *object);
+
+static void  gimp_plug_in_view_selection_changed (GtkTreeSelection *selection,
+                                                  GimpPlugInView   *view);
+
+
+G_DEFINE_TYPE (GimpPlugInView, gimp_plug_in_view, GTK_TYPE_TREE_VIEW)
+
+#define parent_class gimp_plug_in_view_parent_class
+
+static guint view_signals[LAST_SIGNAL] = { 0 };
+
+
+static void
+gimp_plug_in_view_class_init (GimpPlugInViewClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = gimp_plug_in_view_finalize;
+
+  klass->changed         = NULL;
+
+  view_signals[CHANGED] = g_signal_new ("changed",
+                                        G_TYPE_FROM_CLASS (klass),
+                                        G_SIGNAL_RUN_LAST,
+                                        G_STRUCT_OFFSET (GimpPlugInViewClass,
+                                                         changed),
+                                        NULL, NULL,
+                                        gimp_marshal_VOID__VOID,
+                                        G_TYPE_NONE, 0);
+}
+
+static void
+gimp_plug_in_view_init (GimpPlugInView *view)
+{
+  view->plug_in_hash = g_hash_table_new_full (g_file_hash,
+                                              (GEqualFunc) g_file_equal,
+                                              (GDestroyNotify) g_object_unref,
+                                              (GDestroyNotify) g_free);
+}
+
+static void
+gimp_plug_in_view_finalize (GObject *object)
+{
+  GimpPlugInView *view = GIMP_PLUG_IN_VIEW (object);
+
+  if (view->plug_in_hash)
+    {
+      g_hash_table_unref (view->plug_in_hash);
+      view->plug_in_hash = NULL;
+    }
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+GtkWidget *
+gimp_plug_in_view_new (GSList *procedures)
+{
+  GtkTreeView       *view;
+  GtkTreeViewColumn *column;
+  GtkCellRenderer   *cell;
+  GtkListStore      *store;
+  GSList            *list;
+
+  store = gtk_list_store_new (N_COLUMNS,
+                              G_TYPE_FILE,    /* COLUMN_FILE */
+                              G_TYPE_STRING); /* COLUMN_PATH */
+
+  view = g_object_new (GIMP_TYPE_PLUG_IN_VIEW,
+                       "model", store,
+                       NULL);
+
+  g_object_unref (store);
+
+  for (list = procedures; list; list = g_slist_next (list))
+    {
+      GimpPlugInProcedure *proc = list->data;
+      GFile               *file = gimp_plug_in_procedure_get_file (proc);
+
+      if (! g_hash_table_lookup (GIMP_PLUG_IN_VIEW (view)->plug_in_hash, file))
+        {
+          GtkTreeIter  iter;
+          gchar       *path = gimp_file_get_config_path (file, NULL);
+
+          gtk_list_store_append (store, &iter);
+          gtk_list_store_set (store, &iter,
+                              COLUMN_FILE, file,
+                              COLUMN_PATH, path,
+                              -1);
+
+          g_free (path);
+
+          g_hash_table_insert (GIMP_PLUG_IN_VIEW (view)->plug_in_hash,
+                               g_object_ref (file),
+                               g_memdup (&iter, sizeof (GtkTreeIter)));
+        }
+    }
+
+  column = gtk_tree_view_column_new ();
+  gtk_tree_view_column_set_title (column, _("Plug-In"));
+  gtk_tree_view_column_set_expand (column, TRUE);
+
+  cell = gtk_cell_renderer_text_new ();
+  gtk_tree_view_column_pack_start (column, cell, TRUE);
+  gtk_tree_view_column_set_attributes (column, cell,
+                                       "text", COLUMN_PATH,
+                                       NULL);
+
+  gtk_tree_view_append_column (view, column);
+
+  g_signal_connect (gtk_tree_view_get_selection (view), "changed",
+                    G_CALLBACK (gimp_plug_in_view_selection_changed),
+                    view);
+
+  return GTK_WIDGET (view);
+}
+
+gchar *
+gimp_plug_in_view_get_plug_in (GimpPlugInView *view)
+{
+  GtkTreeModel     *model;
+  GtkTreeSelection *selection;
+  GtkTreeIter       iter;
+
+  g_return_val_if_fail (GIMP_IS_PLUG_IN_VIEW (view), NULL);
+
+  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (view));
+
+  if (gtk_tree_selection_get_selected (selection, &model, &iter))
+    {
+      gchar *path;
+
+      gtk_tree_model_get (model, &iter,
+                          COLUMN_PATH,  &path,
+                          -1);
+
+      return path;
+    }
+
+  return NULL;
+}
+
+gboolean
+gimp_plug_in_view_set_plug_in (GimpPlugInView *view,
+                               const gchar    *path)
+{
+  GFile            *file;
+  GtkTreeIter      *iter;
+  GtkTreeSelection *selection;
+
+  g_return_val_if_fail (GIMP_IS_PLUG_IN_VIEW (view), FALSE);
+
+  file = gimp_file_new_for_config_path (path, NULL);
+
+  iter = g_hash_table_lookup (view->plug_in_hash, file);
+
+  g_object_unref (file);
+
+  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (view));
+
+  if (iter)
+    {
+      gtk_tree_selection_select_iter (selection, iter);
+
+      return TRUE;
+    }
+
+  gtk_tree_selection_unselect_all (selection);
+
+  return FALSE;
+}
+
+static void
+gimp_plug_in_view_selection_changed (GtkTreeSelection *selection,
+                                     GimpPlugInView   *view)
+{
+  g_signal_emit (view, view_signals[CHANGED], 0);
+}
diff --git a/app/widgets/gimppluginview.h b/app/widgets/gimppluginview.h
new file mode 100644
index 0000000..dc4d429
--- /dev/null
+++ b/app/widgets/gimppluginview.h
@@ -0,0 +1,60 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimppluginview.h
+ * Copyright (C) 2017  Michael Natterer <mitch gimp org>
+ * Copyright (C) 2004  Sven Neumann <sven gimp org>
+ *
+ * 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_PLUG_IN_VIEW_H__
+#define __GIMP_PLUG_IN_VIEW_H__
+
+
+#define GIMP_TYPE_PLUG_IN_VIEW            (gimp_plug_in_view_get_type ())
+#define GIMP_PLUG_IN_VIEW(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_PLUG_IN_VIEW, 
GimpPlugInView))
+#define GIMP_PLUG_IN_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_PLUG_IN_VIEW, 
GimpPlugInViewClass))
+#define GIMP_IS_PLUG_IN_VIEW(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_PLUG_IN_VIEW))
+#define GIMP_IS_PLUG_IN_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_PLUG_IN_VIEW))
+#define GIMP_PLUG_IN_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_PLUG_IN_VIEW, 
GimpPlugInViewClass))
+
+
+typedef struct _GimpPlugInViewClass GimpPlugInViewClass;
+
+struct _GimpPlugInView
+{
+  GtkTreeView  parent_instance;
+
+  GHashTable  *plug_in_hash;
+};
+
+struct _GimpPlugInViewClass
+{
+  GtkTreeViewClass   parent_class;
+
+  void (* changed) (GimpPlugInView *view);
+};
+
+
+GType       gimp_plug_in_view_get_type    (void) G_GNUC_CONST;
+
+GtkWidget * gimp_plug_in_view_new         (GSList         *procedures);
+
+gchar     * gimp_plug_in_view_get_plug_in (GimpPlugInView *view);
+gboolean    gimp_plug_in_view_set_plug_in (GimpPlugInView *view,
+                                           const gchar    *path);
+
+
+#endif  /*  __GIMP_PLUG_IN_VIEW_H__  */
diff --git a/app/widgets/widgets-types.h b/app/widgets/widgets-types.h
index e6d2dfb..5661fd2 100644
--- a/app/widgets/widgets-types.h
+++ b/app/widgets/widgets-types.h
@@ -205,6 +205,7 @@ typedef struct _GimpMessageBox               GimpMessageBox;
 typedef struct _GimpOverlayBox               GimpOverlayBox;
 typedef struct _GimpPickableButton           GimpPickableButton;
 typedef struct _GimpPickablePopup            GimpPickablePopup;
+typedef struct _GimpPlugInView               GimpPlugInView;
 typedef struct _GimpPolar                    GimpPolar;
 typedef struct _GimpPopup                    GimpPopup;
 typedef struct _GimpPrefsBox                 GimpPrefsBox;
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 3cd327f..fc9d1c9 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -535,6 +535,7 @@ app/widgets/gimppaletteeditor.c
 app/widgets/gimppanedbox.c
 app/widgets/gimppdbdialog.c
 app/widgets/gimppickablepopup.c
+app/widgets/gimppluginview.c
 app/widgets/gimpprogressdialog.c
 app/widgets/gimppropgui-constructors.c
 app/widgets/gimppropgui.c