Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 470 insertions, 0 deletions

diff --git a/app/widgets/gimplayermodecombobox.c b/app/widgets/gimplayermodecombobox.c
new file mode 100644
index 0000000..0483c4d
--- /dev/null
+++ b/app/widgets/gimplayermodecombobox.c
@@ -0,0 +1,470 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1999 Peter Mattis and Spencer Kimball
+ *
+ * gimplayermodecombobox.c
+ * Copyright (C) 2017  Michael Natterer <mitch@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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gtk/gtk.h>
+#include <gegl.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "operations/layer-modes/gimp-layer-modes.h"
+
+#include "gimplayermodecombobox.h"
+
+
+/**
+ * SECTION: gimplayermodecombobox
+ * @title: GimpLayerModeComboBox
+ * @short_description: A #GimpEnumComboBox subclass for selecting a layer mode.
+ *
+ * A #GtkComboBox subclass for selecting a layer mode
+ **/
+
+
+enum
+{
+  PROP_0,
+  PROP_CONTEXT,
+  PROP_LAYER_MODE,
+  PROP_GROUP
+};
+
+
+struct _GimpLayerModeComboBoxPrivate
+{
+  GimpLayerModeContext context;
+  GimpLayerMode        layer_mode;
+  GimpLayerModeGroup   group;
+};
+
+
+static void     gimp_layer_mode_combo_box_constructed      (GObject               *object);
+static void     gimp_layer_mode_combo_box_set_property     (GObject               *object,
+                                                            guint                  prop_id,
+                                                            const GValue          *value,
+                                                            GParamSpec            *pspec);
+static void     gimp_layer_mode_combo_box_get_property     (GObject               *object,
+                                                            guint                  prop_id,
+                                                            GValue                *value,
+                                                            GParamSpec            *pspec);
+
+static void     gimp_layer_mode_combo_box_changed          (GtkComboBox           *gtk_combo);
+
+static void     gimp_layer_mode_combo_box_update_model     (GimpLayerModeComboBox *combo,
+                                                            gboolean               change_mode);
+static gboolean gimp_layer_mode_combo_box_separator_func   (GtkTreeModel          *model,
+                                                            GtkTreeIter           *iter,
+                                                            gpointer               data);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpLayerModeComboBox, gimp_layer_mode_combo_box,
+                            GIMP_TYPE_ENUM_COMBO_BOX)
+
+#define parent_class gimp_layer_mode_combo_box_parent_class
+
+
+static void
+gimp_layer_mode_combo_box_class_init (GimpLayerModeComboBoxClass *klass)
+{
+  GObjectClass     *object_class = G_OBJECT_CLASS (klass);
+  GtkComboBoxClass *combo_class  = GTK_COMBO_BOX_CLASS (klass);
+
+  object_class->constructed  = gimp_layer_mode_combo_box_constructed;
+  object_class->set_property = gimp_layer_mode_combo_box_set_property;
+  object_class->get_property = gimp_layer_mode_combo_box_get_property;
+
+  combo_class->changed       = gimp_layer_mode_combo_box_changed;
+
+  g_object_class_install_property (object_class, PROP_CONTEXT,
+                                   g_param_spec_flags ("context",
+                                                       NULL, NULL,
+                                                       GIMP_TYPE_LAYER_MODE_CONTEXT,
+                                                       GIMP_LAYER_MODE_CONTEXT_ALL,
+                                                       GIMP_PARAM_READWRITE |
+                                                       G_PARAM_CONSTRUCT));
+
+  g_object_class_install_property (object_class, PROP_LAYER_MODE,
+                                   g_param_spec_enum ("layer-mode",
+                                                      NULL, NULL,
+                                                      GIMP_TYPE_LAYER_MODE,
+                                                      GIMP_LAYER_MODE_NORMAL,
+                                                      GIMP_PARAM_READWRITE |
+                                                      G_PARAM_CONSTRUCT));
+
+  g_object_class_install_property (object_class, PROP_GROUP,
+                                   g_param_spec_enum ("group",
+                                                      NULL, NULL,
+                                                      GIMP_TYPE_LAYER_MODE_GROUP,
+                                                      GIMP_LAYER_MODE_GROUP_DEFAULT,
+                                                      GIMP_PARAM_READWRITE |
+                                                      G_PARAM_CONSTRUCT));
+}
+
+static void
+gimp_layer_mode_combo_box_init (GimpLayerModeComboBox *combo)
+{
+  combo->priv = gimp_layer_mode_combo_box_get_instance_private (combo);
+
+  gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (combo),
+                                        gimp_layer_mode_combo_box_separator_func,
+                                        GINT_TO_POINTER (GIMP_LAYER_MODE_SEPARATOR),
+                                        NULL);
+}
+
+static void
+gimp_layer_mode_combo_box_constructed (GObject *object)
+{
+  GimpLayerModeComboBox *combo = GIMP_LAYER_MODE_COMBO_BOX (object);
+
+  G_OBJECT_CLASS (parent_class)->constructed (object);
+
+  gimp_layer_mode_combo_box_update_model (combo, FALSE);
+
+  gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (combo),
+                                 combo->priv->layer_mode);
+}
+
+static void
+gimp_layer_mode_combo_box_set_property (GObject      *object,
+                                        guint         prop_id,
+                                        const GValue *value,
+                                        GParamSpec   *pspec)
+{
+  GimpLayerModeComboBox *combo = GIMP_LAYER_MODE_COMBO_BOX (object);
+
+  switch (prop_id)
+    {
+    case PROP_CONTEXT:
+      gimp_layer_mode_combo_box_set_context (combo, g_value_get_flags (value));
+      break;
+
+    case PROP_LAYER_MODE:
+      gimp_layer_mode_combo_box_set_mode (combo, g_value_get_enum (value));
+      break;
+
+    case PROP_GROUP:
+      gimp_layer_mode_combo_box_set_group (combo, g_value_get_enum (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_layer_mode_combo_box_get_property (GObject    *object,
+                                        guint       prop_id,
+                                        GValue     *value,
+                                        GParamSpec *pspec)
+{
+  GimpLayerModeComboBox *combo = GIMP_LAYER_MODE_COMBO_BOX (object);
+
+  switch (prop_id)
+    {
+    case PROP_CONTEXT:
+      g_value_set_flags (value, combo->priv->context);
+      break;
+
+    case PROP_LAYER_MODE:
+      g_value_set_enum (value, combo->priv->layer_mode);
+      break;
+
+    case PROP_GROUP:
+      g_value_set_enum (value, combo->priv->group);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_layer_mode_combo_box_changed (GtkComboBox *gtk_combo)
+{
+  GimpLayerModeComboBox *combo = GIMP_LAYER_MODE_COMBO_BOX (gtk_combo);
+  GimpLayerMode          mode;
+
+  if (gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (combo),
+                                     (gint *) &mode))
+    {
+      combo->priv->layer_mode = mode;
+
+      g_object_notify (G_OBJECT (combo), "layer-mode");
+    }
+}
+
+
+/**
+ * gimp_layer_mode_combo_box_new:
+ * Foo.
+ *
+ * Return value: a new #GimpLayerModeComboBox.
+ **/
+GtkWidget *
+gimp_layer_mode_combo_box_new (GimpLayerModeContext context)
+{
+  return g_object_new (GIMP_TYPE_LAYER_MODE_COMBO_BOX,
+                       "context", context,
+                       NULL);
+}
+
+void
+gimp_layer_mode_combo_box_set_context (GimpLayerModeComboBox *combo,
+                                       GimpLayerModeContext   context)
+{
+  g_return_if_fail (GIMP_IS_LAYER_MODE_COMBO_BOX (combo));
+
+  if (context != combo->priv->context)
+    {
+      g_object_freeze_notify (G_OBJECT (combo));
+
+      combo->priv->context = context;
+      g_object_notify (G_OBJECT (combo), "context");
+
+      gimp_layer_mode_combo_box_update_model (combo, TRUE);
+
+      g_object_thaw_notify (G_OBJECT (combo));
+    }
+}
+
+GimpLayerModeContext
+gimp_layer_mode_combo_box_get_context (GimpLayerModeComboBox *combo)
+{
+  g_return_val_if_fail (GIMP_IS_LAYER_MODE_COMBO_BOX (combo),
+                        GIMP_LAYER_MODE_CONTEXT_ALL);
+
+  return combo->priv->context;
+}
+
+void
+gimp_layer_mode_combo_box_set_mode (GimpLayerModeComboBox *combo,
+                                    GimpLayerMode          mode)
+{
+  g_return_if_fail (GIMP_IS_LAYER_MODE_COMBO_BOX (combo));
+  g_return_if_fail (gimp_layer_mode_get_context (mode) & combo->priv->context);
+
+  if (mode != combo->priv->layer_mode)
+    {
+      GtkTreeModel *model;
+      GtkTreeIter   dummy;
+
+      model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo));
+
+      g_object_freeze_notify (G_OBJECT (combo));
+
+      if (! gimp_int_store_lookup_by_value (model, mode, &dummy))
+        {
+          combo->priv->group = gimp_layer_mode_get_group (mode);
+          g_object_notify (G_OBJECT (combo), "group");
+
+          gimp_layer_mode_combo_box_update_model (combo, FALSE);
+        }
+
+      gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (combo), mode);
+
+      g_object_thaw_notify (G_OBJECT (combo));
+    }
+}
+
+GimpLayerMode
+gimp_layer_mode_combo_box_get_mode (GimpLayerModeComboBox *combo)
+{
+  g_return_val_if_fail (GIMP_IS_LAYER_MODE_COMBO_BOX (combo),
+                        GIMP_LAYER_MODE_NORMAL);
+
+  return combo->priv->layer_mode;
+}
+
+void
+gimp_layer_mode_combo_box_set_group (GimpLayerModeComboBox *combo,
+                                     GimpLayerModeGroup     group)
+{
+  g_return_if_fail (GIMP_IS_LAYER_MODE_COMBO_BOX (combo));
+
+  if (group != combo->priv->group)
+    {
+      g_object_freeze_notify (G_OBJECT (combo));
+
+      combo->priv->group = group;
+      g_object_notify (G_OBJECT (combo), "group");
+
+      gimp_layer_mode_combo_box_update_model (combo, TRUE);
+
+      g_object_thaw_notify (G_OBJECT (combo));
+    }
+}
+
+GimpLayerModeGroup
+gimp_layer_mode_combo_box_get_group (GimpLayerModeComboBox *combo)
+{
+  g_return_val_if_fail (GIMP_IS_LAYER_MODE_COMBO_BOX (combo),
+                        GIMP_LAYER_MODE_GROUP_DEFAULT);
+
+  return combo->priv->group;
+}
+
+
+/*  private functions  */
+
+static void
+gimp_enum_store_add_value (GtkListStore *store,
+                           GEnumValue   *value)
+{
+  GtkTreeIter  iter = { 0, };
+  const gchar *desc;
+  const gchar *abbrev;
+  gchar       *stripped;
+
+  desc   = gimp_enum_value_get_desc   (GIMP_ENUM_STORE (store)->enum_class, value);
+  abbrev = gimp_enum_value_get_abbrev (GIMP_ENUM_STORE (store)->enum_class, value);
+
+  /* no mnemonics in combo boxes */
+  stripped = gimp_strip_uline (desc);
+
+  gtk_list_store_append (store, &iter);
+  gtk_list_store_set (store, &iter,
+                      GIMP_INT_STORE_VALUE,  value->value,
+                      GIMP_INT_STORE_LABEL,  stripped,
+                      GIMP_INT_STORE_ABBREV, abbrev,
+                      -1);
+
+  g_free (stripped);
+}
+
+static void
+gimp_enum_store_add_separator (GtkListStore *store)
+{
+  GtkTreeIter  iter = { 0, };
+
+  gtk_list_store_append (store, &iter);
+  gtk_list_store_set (store, &iter,
+                      GIMP_INT_STORE_VALUE, GIMP_LAYER_MODE_SEPARATOR,
+                      -1);
+}
+
+static GtkListStore *
+gimp_enum_store_new_from_array (GType                 enum_type,
+                                gint                  n_values,
+                                const gint           *values,
+                                GimpLayerModeContext  context)
+{
+  GtkListStore *store;
+  GEnumValue   *value;
+  gboolean      first_item        = TRUE;
+  gboolean      prepend_separator = FALSE;
+  gint          i;
+
+  g_return_val_if_fail (G_TYPE_IS_ENUM (enum_type), NULL);
+  g_return_val_if_fail (n_values > 1, NULL);
+  g_return_val_if_fail (values != NULL, NULL);
+
+  store = g_object_new (GIMP_TYPE_ENUM_STORE,
+                        "enum-type", enum_type,
+                        NULL);
+
+  for (i = 0; i < n_values; i++)
+    {
+      if (values[i] != GIMP_LAYER_MODE_SEPARATOR)
+        {
+          if (gimp_layer_mode_get_context (values[i]) & context)
+            {
+              value = g_enum_get_value (GIMP_ENUM_STORE (store)->enum_class,
+                                        values[i]);
+
+              if (value)
+                {
+                  if (prepend_separator)
+                    {
+                      gimp_enum_store_add_separator (store);
+
+                      prepend_separator = FALSE;
+                    }
+
+                  gimp_enum_store_add_value (store, value);
+
+                  first_item = FALSE;
+                }
+            }
+        }
+      else
+        {
+          if (! first_item)
+            prepend_separator = TRUE;
+        }
+    }
+
+  return store;
+}
+
+static void
+gimp_layer_mode_combo_box_update_model (GimpLayerModeComboBox *combo,
+                                        gboolean               change_mode)
+{
+  GtkListStore        *store;
+  const GimpLayerMode *modes;
+  gint                 n_modes;
+
+  modes = gimp_layer_mode_get_group_array (combo->priv->group, &n_modes);
+  store = gimp_enum_store_new_from_array (GIMP_TYPE_LAYER_MODE,
+                                          n_modes, (gint *) modes,
+                                          combo->priv->context);
+
+  gtk_combo_box_set_model (GTK_COMBO_BOX (combo), GTK_TREE_MODEL (store));
+  g_object_unref (store);
+
+  if (change_mode)
+    {
+      GimpLayerMode new_mode;
+
+      if (gimp_layer_mode_get_for_group (combo->priv->layer_mode,
+                                         combo->priv->group,
+                                         &new_mode) &&
+          (gimp_layer_mode_get_context (new_mode) & combo->priv->context))
+        {
+          gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (combo), new_mode);
+        }
+      else
+        {
+          GtkTreeIter iter;
+
+          /*  switch to the first mode, which will be one of the "normal"  */
+          gtk_tree_model_get_iter_first (GTK_TREE_MODEL (store), &iter);
+          gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo), &iter);
+        }
+    }
+}
+
+static gboolean
+gimp_layer_mode_combo_box_separator_func (GtkTreeModel *model,
+                                          GtkTreeIter  *iter,
+                                          gpointer      data)
+{
+  gint value;
+
+  gtk_tree_model_get (model, iter, GIMP_INT_STORE_VALUE, &value, -1);
+
+  return value == GPOINTER_TO_INT (data);
+}