481 lines
15 KiB
C
481 lines
15 KiB
C
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/* LIBPIKA - The PIKA Library
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* Copyright (C) 1995-1999 Peter Mattis and Spencer Kimball
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*
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* pikalayermodecombobox.c
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* Copyright (C) 2017 Michael Natterer <mitch@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include <gegl.h>
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#include "libpikabase/pikabase.h"
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#include "libpikawidgets/pikawidgets.h"
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#include "widgets-types.h"
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#include "operations/layer-modes/pika-layer-modes.h"
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#include "pikalayermodecombobox.h"
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/**
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* SECTION: pikalayermodecombobox
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* @title: PikaLayerModeComboBox
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* @short_description: A #PikaEnumComboBox subclass for selecting a layer mode.
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*
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* A #GtkComboBox subclass for selecting a layer mode
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**/
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enum
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{
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PROP_0,
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PROP_CONTEXT,
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PROP_LAYER_MODE,
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PROP_GROUP
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};
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struct _PikaLayerModeComboBoxPrivate
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{
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PikaLayerModeContext context;
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PikaLayerMode layer_mode;
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PikaLayerModeGroup group;
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};
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static void pika_layer_mode_combo_box_constructed (GObject *object);
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static void pika_layer_mode_combo_box_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void pika_layer_mode_combo_box_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void pika_layer_mode_combo_box_changed (GtkComboBox *gtk_combo);
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static void pika_layer_mode_combo_box_update_model (PikaLayerModeComboBox *combo,
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gboolean change_mode);
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static gboolean pika_layer_mode_combo_box_separator_func (GtkTreeModel *model,
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GtkTreeIter *iter,
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gpointer data);
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G_DEFINE_TYPE_WITH_PRIVATE (PikaLayerModeComboBox, pika_layer_mode_combo_box,
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PIKA_TYPE_ENUM_COMBO_BOX)
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#define parent_class pika_layer_mode_combo_box_parent_class
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static void
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pika_layer_mode_combo_box_class_init (PikaLayerModeComboBoxClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkComboBoxClass *combo_class = GTK_COMBO_BOX_CLASS (klass);
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object_class->constructed = pika_layer_mode_combo_box_constructed;
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object_class->set_property = pika_layer_mode_combo_box_set_property;
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object_class->get_property = pika_layer_mode_combo_box_get_property;
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combo_class->changed = pika_layer_mode_combo_box_changed;
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g_object_class_install_property (object_class, PROP_CONTEXT,
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g_param_spec_flags ("context",
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NULL, NULL,
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PIKA_TYPE_LAYER_MODE_CONTEXT,
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PIKA_LAYER_MODE_CONTEXT_ALL,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_LAYER_MODE,
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g_param_spec_enum ("layer-mode",
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NULL, NULL,
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PIKA_TYPE_LAYER_MODE,
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PIKA_LAYER_MODE_NORMAL,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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g_object_class_install_property (object_class, PROP_GROUP,
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g_param_spec_enum ("group",
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NULL, NULL,
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PIKA_TYPE_LAYER_MODE_GROUP,
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PIKA_LAYER_MODE_GROUP_DEFAULT,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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}
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static void
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pika_layer_mode_combo_box_init (PikaLayerModeComboBox *combo)
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{
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combo->priv = pika_layer_mode_combo_box_get_instance_private (combo);
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gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (combo),
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pika_layer_mode_combo_box_separator_func,
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GINT_TO_POINTER (PIKA_LAYER_MODE_SEPARATOR),
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NULL);
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}
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static void
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pika_layer_mode_combo_box_constructed (GObject *object)
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{
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PikaLayerModeComboBox *combo = PIKA_LAYER_MODE_COMBO_BOX (object);
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G_OBJECT_CLASS (parent_class)->constructed (object);
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pika_layer_mode_combo_box_update_model (combo, FALSE);
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pika_int_combo_box_set_active (PIKA_INT_COMBO_BOX (combo),
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combo->priv->layer_mode);
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}
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static void
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pika_layer_mode_combo_box_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PikaLayerModeComboBox *combo = PIKA_LAYER_MODE_COMBO_BOX (object);
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switch (prop_id)
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{
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case PROP_CONTEXT:
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pika_layer_mode_combo_box_set_context (combo, g_value_get_flags (value));
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break;
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case PROP_LAYER_MODE:
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pika_layer_mode_combo_box_set_mode (combo, g_value_get_enum (value));
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break;
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case PROP_GROUP:
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pika_layer_mode_combo_box_set_group (combo, g_value_get_enum (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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pika_layer_mode_combo_box_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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PikaLayerModeComboBox *combo = PIKA_LAYER_MODE_COMBO_BOX (object);
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switch (prop_id)
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{
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case PROP_CONTEXT:
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g_value_set_flags (value, combo->priv->context);
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break;
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case PROP_LAYER_MODE:
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g_value_set_enum (value, combo->priv->layer_mode);
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break;
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case PROP_GROUP:
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g_value_set_enum (value, combo->priv->group);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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pika_layer_mode_combo_box_changed (GtkComboBox *gtk_combo)
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{
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PikaLayerModeComboBox *combo = PIKA_LAYER_MODE_COMBO_BOX (gtk_combo);
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PikaLayerMode mode;
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if (pika_int_combo_box_get_active (PIKA_INT_COMBO_BOX (combo),
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(gint *) &mode))
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{
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combo->priv->layer_mode = mode;
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g_object_notify (G_OBJECT (combo), "layer-mode");
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}
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}
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/**
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* pika_layer_mode_combo_box_new:
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* Foo.
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*
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* Returns: a new #PikaLayerModeComboBox.
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**/
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GtkWidget *
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pika_layer_mode_combo_box_new (PikaLayerModeContext context)
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{
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return g_object_new (PIKA_TYPE_LAYER_MODE_COMBO_BOX,
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"context", context,
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NULL);
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}
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void
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pika_layer_mode_combo_box_set_context (PikaLayerModeComboBox *combo,
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PikaLayerModeContext context)
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{
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g_return_if_fail (PIKA_IS_LAYER_MODE_COMBO_BOX (combo));
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if (context != combo->priv->context)
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{
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g_object_freeze_notify (G_OBJECT (combo));
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combo->priv->context = context;
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g_object_notify (G_OBJECT (combo), "context");
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pika_layer_mode_combo_box_update_model (combo, TRUE);
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g_object_thaw_notify (G_OBJECT (combo));
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}
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}
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PikaLayerModeContext
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pika_layer_mode_combo_box_get_context (PikaLayerModeComboBox *combo)
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{
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g_return_val_if_fail (PIKA_IS_LAYER_MODE_COMBO_BOX (combo),
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PIKA_LAYER_MODE_CONTEXT_ALL);
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return combo->priv->context;
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}
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void
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pika_layer_mode_combo_box_set_mode (PikaLayerModeComboBox *combo,
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PikaLayerMode mode)
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{
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g_return_if_fail (PIKA_IS_LAYER_MODE_COMBO_BOX (combo));
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g_return_if_fail (mode == -1 || (pika_layer_mode_get_context (mode) & combo->priv->context));
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if (mode == -1)
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{
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pika_int_combo_box_set_active (PIKA_INT_COMBO_BOX (combo), -1);
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combo->priv->layer_mode = mode;
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}
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else if (mode != combo->priv->layer_mode)
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{
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GtkTreeModel *model;
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GtkTreeIter dummy;
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model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo));
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g_object_freeze_notify (G_OBJECT (combo));
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if (! pika_int_store_lookup_by_value (model, mode, &dummy))
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{
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combo->priv->group = pika_layer_mode_get_group (mode);
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g_object_notify (G_OBJECT (combo), "group");
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pika_layer_mode_combo_box_update_model (combo, FALSE);
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}
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pika_int_combo_box_set_active (PIKA_INT_COMBO_BOX (combo), mode);
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g_object_thaw_notify (G_OBJECT (combo));
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}
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}
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PikaLayerMode
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pika_layer_mode_combo_box_get_mode (PikaLayerModeComboBox *combo)
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{
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g_return_val_if_fail (PIKA_IS_LAYER_MODE_COMBO_BOX (combo),
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PIKA_LAYER_MODE_NORMAL);
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return combo->priv->layer_mode;
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}
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void
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pika_layer_mode_combo_box_set_group (PikaLayerModeComboBox *combo,
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PikaLayerModeGroup group)
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{
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g_return_if_fail (PIKA_IS_LAYER_MODE_COMBO_BOX (combo));
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if (group != combo->priv->group)
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{
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g_object_freeze_notify (G_OBJECT (combo));
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combo->priv->group = group;
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g_object_notify (G_OBJECT (combo), "group");
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pika_layer_mode_combo_box_update_model (combo, TRUE);
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g_object_thaw_notify (G_OBJECT (combo));
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}
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}
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PikaLayerModeGroup
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pika_layer_mode_combo_box_get_group (PikaLayerModeComboBox *combo)
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{
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g_return_val_if_fail (PIKA_IS_LAYER_MODE_COMBO_BOX (combo),
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PIKA_LAYER_MODE_GROUP_DEFAULT);
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return combo->priv->group;
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}
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/* private functions */
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static void
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pika_enum_store_add_value (GtkListStore *store,
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GEnumClass *enum_class,
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GEnumValue *value)
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{
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GtkTreeIter iter = { 0, };
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const gchar *desc;
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const gchar *abbrev;
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gchar *stripped;
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desc = pika_enum_value_get_desc (enum_class, value);
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abbrev = pika_enum_value_get_abbrev (enum_class, value);
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/* no mnemonics in combo boxes */
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stripped = pika_strip_uline (desc);
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gtk_list_store_append (store, &iter);
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gtk_list_store_set (store, &iter,
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PIKA_INT_STORE_VALUE, value->value,
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PIKA_INT_STORE_LABEL, stripped,
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PIKA_INT_STORE_ABBREV, abbrev,
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-1);
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g_free (stripped);
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}
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static void
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pika_enum_store_add_separator (GtkListStore *store)
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{
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GtkTreeIter iter = { 0, };
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gtk_list_store_append (store, &iter);
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gtk_list_store_set (store, &iter,
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PIKA_INT_STORE_VALUE, PIKA_LAYER_MODE_SEPARATOR,
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-1);
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}
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static GtkListStore *
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pika_enum_store_new_from_array (GType enum_type,
|
||
|
|
gint n_values,
|
||
|
|
const gint *values,
|
||
|
|
PikaLayerModeContext context)
|
||
|
|
{
|
||
|
|
GtkListStore *store;
|
||
|
|
GEnumClass *enum_class;
|
||
|
|
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 (PIKA_TYPE_ENUM_STORE,
|
||
|
|
"enum-type", enum_type,
|
||
|
|
NULL);
|
||
|
|
|
||
|
|
enum_class = g_type_class_ref (enum_type);
|
||
|
|
|
||
|
|
for (i = 0; i < n_values; i++)
|
||
|
|
{
|
||
|
|
if (values[i] != PIKA_LAYER_MODE_SEPARATOR)
|
||
|
|
{
|
||
|
|
if (pika_layer_mode_get_context (values[i]) & context)
|
||
|
|
{
|
||
|
|
value = g_enum_get_value (enum_class, values[i]);
|
||
|
|
|
||
|
|
if (value)
|
||
|
|
{
|
||
|
|
if (prepend_separator)
|
||
|
|
{
|
||
|
|
pika_enum_store_add_separator (store);
|
||
|
|
|
||
|
|
prepend_separator = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
pika_enum_store_add_value (store, enum_class, value);
|
||
|
|
|
||
|
|
first_item = FALSE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (! first_item)
|
||
|
|
prepend_separator = TRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
g_type_class_unref (enum_class);
|
||
|
|
|
||
|
|
return store;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_layer_mode_combo_box_update_model (PikaLayerModeComboBox *combo,
|
||
|
|
gboolean change_mode)
|
||
|
|
{
|
||
|
|
GtkListStore *store;
|
||
|
|
const PikaLayerMode *modes;
|
||
|
|
gint n_modes;
|
||
|
|
|
||
|
|
modes = pika_layer_mode_get_group_array (combo->priv->group, &n_modes);
|
||
|
|
store = pika_enum_store_new_from_array (PIKA_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)
|
||
|
|
{
|
||
|
|
PikaLayerMode new_mode;
|
||
|
|
|
||
|
|
if (pika_layer_mode_get_for_group (combo->priv->layer_mode,
|
||
|
|
combo->priv->group,
|
||
|
|
&new_mode) &&
|
||
|
|
(pika_layer_mode_get_context (new_mode) & combo->priv->context))
|
||
|
|
{
|
||
|
|
pika_int_combo_box_set_active (PIKA_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
|
||
|
|
pika_layer_mode_combo_box_separator_func (GtkTreeModel *model,
|
||
|
|
GtkTreeIter *iter,
|
||
|
|
gpointer data)
|
||
|
|
{
|
||
|
|
gint value;
|
||
|
|
|
||
|
|
gtk_tree_model_get (model, iter, PIKA_INT_STORE_VALUE, &value, -1);
|
||
|
|
|
||
|
|
return value == GPOINTER_TO_INT (data);
|
||
|
|
}
|
