diff options
Diffstat (limited to 'app/core/gimptoolitem.c')
| -rw-r--r-- | app/core/gimptoolitem.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/app/core/gimptoolitem.c b/app/core/gimptoolitem.c new file mode 100644 index 0000000..984597b --- /dev/null +++ b/app/core/gimptoolitem.c @@ -0,0 +1,227 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimptoolitem.c + * Copyright (C) 2020 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 <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <string.h> + +#include <gdk-pixbuf/gdk-pixbuf.h> +#include <gegl.h> + +#include "libgimpbase/gimpbase.h" +#include "libgimpconfig/gimpconfig.h" + +#include "core-types.h" + +#include "core/gimpmarshal.h" + +#include "gimptoolitem.h" + + +enum +{ + VISIBLE_CHANGED, + SHOWN_CHANGED, + LAST_SIGNAL +}; + +enum +{ + PROP_0, + PROP_VISIBLE, + PROP_SHOWN +}; + + +struct _GimpToolItemPrivate +{ + gboolean visible; +}; + + +/* local function prototypes */ + +static void gimp_tool_item_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); +static void gimp_tool_item_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); + + +G_DEFINE_TYPE_WITH_PRIVATE (GimpToolItem, gimp_tool_item, GIMP_TYPE_VIEWABLE) + +#define parent_class gimp_tool_item_parent_class + +static guint gimp_tool_item_signals[LAST_SIGNAL] = { 0 }; + + +/* private functions */ + +static void +gimp_tool_item_class_init (GimpToolItemClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + gimp_tool_item_signals[VISIBLE_CHANGED] = + g_signal_new ("visible-changed", + G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (GimpToolItemClass, visible_changed), + NULL, NULL, + gimp_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + gimp_tool_item_signals[SHOWN_CHANGED] = + g_signal_new ("shown-changed", + G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (GimpToolItemClass, shown_changed), + NULL, NULL, + gimp_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + object_class->get_property = gimp_tool_item_get_property; + object_class->set_property = gimp_tool_item_set_property; + + GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_VISIBLE, + "visible", NULL, NULL, + TRUE, + GIMP_PARAM_STATIC_STRINGS); + + g_object_class_install_property (object_class, PROP_SHOWN, + g_param_spec_boolean ("shown", NULL, NULL, + TRUE, + GIMP_PARAM_READABLE)); +} + +static void +gimp_tool_item_init (GimpToolItem *tool_item) +{ + tool_item->priv = gimp_tool_item_get_instance_private (tool_item); +} + +static void +gimp_tool_item_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + GimpToolItem *tool_item = GIMP_TOOL_ITEM (object); + + switch (property_id) + { + case PROP_VISIBLE: + g_value_set_boolean (value, tool_item->priv->visible); + break; + case PROP_SHOWN: + g_value_set_boolean (value, gimp_tool_item_get_shown (tool_item)); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_tool_item_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + GimpToolItem *tool_item = GIMP_TOOL_ITEM (object); + + switch (property_id) + { + case PROP_VISIBLE: + gimp_tool_item_set_visible (tool_item, g_value_get_boolean (value)); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + + +/* public functions */ + +void +gimp_tool_item_set_visible (GimpToolItem *tool_item, + gboolean visible) +{ + g_return_if_fail (GIMP_IS_TOOL_ITEM (tool_item)); + + if (visible != tool_item->priv->visible) + { + gboolean old_shown; + + g_object_freeze_notify (G_OBJECT (tool_item)); + + old_shown = gimp_tool_item_get_shown (tool_item); + + tool_item->priv->visible = visible; + + g_signal_emit (tool_item, gimp_tool_item_signals[VISIBLE_CHANGED], 0); + + if (gimp_tool_item_get_shown (tool_item) != old_shown) + gimp_tool_item_shown_changed (tool_item); + + g_object_notify (G_OBJECT (tool_item), "visible"); + + g_object_thaw_notify (G_OBJECT (tool_item)); + } +} + +gboolean +gimp_tool_item_get_visible (GimpToolItem *tool_item) +{ + g_return_val_if_fail (GIMP_IS_TOOL_ITEM (tool_item), FALSE); + + return tool_item->priv->visible; +} + +gboolean +gimp_tool_item_get_shown (GimpToolItem *tool_item) +{ + GimpToolItem *parent; + + g_return_val_if_fail (GIMP_IS_TOOL_ITEM (tool_item), FALSE); + + parent = GIMP_TOOL_ITEM ( + gimp_viewable_get_parent (GIMP_VIEWABLE (tool_item))); + + return tool_item->priv->visible && + (! parent || gimp_tool_item_get_shown (parent)); +} + + +/* protected functions */ + +void +gimp_tool_item_shown_changed (GimpToolItem *tool_item) +{ + g_signal_emit (tool_item, gimp_tool_item_signals[SHOWN_CHANGED], 0); + + g_object_notify (G_OBJECT (tool_item), "shown"); +} |