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gimp/libgimp/gimpitemcombobox.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpitemcombobox.c
* Copyright (C) 2004 Sven Neumann <sven@gimp.org>
* Copyright (C) 2006 Simon Budig <simon@gimp.org>
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "gimp.h"
#include "gimpuitypes.h"
#include "gimpitemcombobox.h"
#include "gimppixbuf.h"
/**
* SECTION: gimpitemcombobox
* @title: GimpItemComboBox
* @short_description: Widgets providing popup menus of items.
*
* Widgets providing popup menus of items (layers, channels,
* drawables, paths).
**/
#define THUMBNAIL_SIZE 24
#define WIDTH_REQUEST 200
#define GET_PRIVATE(obj) (g_object_get_data (G_OBJECT (obj), "gimp-item-combo-box-private"))
typedef struct _GimpItemComboBoxPrivate GimpItemComboBoxPrivate;
struct _GimpItemComboBoxPrivate
{
GimpItemConstraintFunc constraint;
gpointer data;
};
typedef struct _GimpDrawableComboBoxClass GimpDrawableComboBoxClass;
typedef struct _GimpChannelComboBoxClass GimpChannelComboBoxClass;
typedef struct _GimpLayerComboBoxClass GimpLayerComboBoxClass;
typedef struct _GimpPathComboBoxClass GimpPathComboBoxClass;
struct _GimpDrawableComboBox
{
GimpIntComboBox parent_instance;
};
struct _GimpDrawableComboBoxClass
{
GimpIntComboBoxClass parent_class;
};
struct _GimpChannelComboBox
{
GimpIntComboBox parent_instance;
};
struct _GimpChannelComboBoxClass
{
GimpIntComboBoxClass parent_class;
};
struct _GimpLayerComboBox
{
GimpIntComboBox parent_instance;
};
struct _GimpLayerComboBoxClass
{
GimpIntComboBoxClass parent_class;
};
struct _GimpPathComboBox
{
GimpIntComboBox parent_instance;
};
struct _GimpPathComboBoxClass
{
GimpIntComboBoxClass parent_class;
};
static GtkWidget * gimp_item_combo_box_new (GType type,
GimpItemConstraintFunc constraint,
gpointer data,
GDestroyNotify data_destroy);
static void gimp_item_combo_box_populate (GimpIntComboBox *combo_box);
static void gimp_item_combo_box_model_add (GimpIntComboBox *combo_box,
GtkListStore *store,
GimpImage *image,
GList *items,
gint tree_level);
static void gimp_item_combo_box_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection,
guint info,
guint time);
static void gimp_item_combo_box_changed (GimpIntComboBox *combo_box);
static const GtkTargetEntry targets[] =
{
{ "application/x-gimp-channel-id", 0 },
{ "application/x-gimp-layer-id", 0 },
{ "application/x-gimp-path-id", 0 }
};
G_DEFINE_TYPE (GimpDrawableComboBox, gimp_drawable_combo_box,
GIMP_TYPE_INT_COMBO_BOX)
static void
gimp_drawable_combo_box_class_init (GimpDrawableComboBoxClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
widget_class->drag_data_received = gimp_item_combo_box_drag_data_received;
}
static void
gimp_drawable_combo_box_init (GimpDrawableComboBox *combo_box)
{
gtk_drag_dest_set (GTK_WIDGET (combo_box),
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
targets, 2,
GDK_ACTION_COPY);
g_object_set_data_full (G_OBJECT (combo_box), "gimp-item-combo-box-private",
g_new0 (GimpItemComboBoxPrivate, 1),
(GDestroyNotify) g_free);
}
/**
* gimp_drawable_combo_box_new:
* @constraint: (nullable): A #GimpItemConstraintFunc or %NULL
* @data: (closure constraint): A pointer that is passed to @constraint
* @data_destroy: (destroy data): Destroy function for @data
*
* Creates a new #GimpIntComboBox filled with all currently opened
* drawables. If a @constraint function is specified, it is called for
* each drawable and only if the function returns %TRUE, the drawable
* is added to the combobox.
*
* You should use gimp_int_combo_box_connect() to initialize and connect
* the combo. Use gimp_int_combo_box_set_active() to get the active
* drawable ID and gimp_int_combo_box_get_active() to retrieve the ID
* of the selected drawable.
*
* Returns: a new #GimpIntComboBox.
*
* Since: 2.2
**/
GtkWidget *
gimp_drawable_combo_box_new (GimpItemConstraintFunc constraint,
gpointer data,
GDestroyNotify data_destroy)
{
return gimp_item_combo_box_new (GIMP_TYPE_DRAWABLE_COMBO_BOX,
constraint, data, data_destroy);
}
G_DEFINE_TYPE (GimpChannelComboBox, gimp_channel_combo_box,
GIMP_TYPE_INT_COMBO_BOX)
static void
gimp_channel_combo_box_class_init (GimpChannelComboBoxClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
widget_class->drag_data_received = gimp_item_combo_box_drag_data_received;
}
static void
gimp_channel_combo_box_init (GimpChannelComboBox *combo_box)
{
gtk_drag_dest_set (GTK_WIDGET (combo_box),
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
targets, 1,
GDK_ACTION_COPY);
g_object_set_data_full (G_OBJECT (combo_box), "gimp-item-combo-box-private",
g_new0 (GimpItemComboBoxPrivate, 1),
(GDestroyNotify) g_free);
}
/**
* gimp_channel_combo_box_new:
* @constraint: (nullable): A #GimpItemConstraintFunc or %NULL
* @data: (closure constraint): A pointer that is passed to @constraint
* @data_destroy: (destroy data): Destroy function for @data
*
* Creates a new #GimpIntComboBox filled with all currently opened
* channels. See gimp_drawable_combo_box_new() for more information.
*
* Returns: a new #GimpIntComboBox.
*
* Since: 2.2
**/
GtkWidget *
gimp_channel_combo_box_new (GimpItemConstraintFunc constraint,
gpointer data,
GDestroyNotify data_destroy)
{
return gimp_item_combo_box_new (GIMP_TYPE_CHANNEL_COMBO_BOX,
constraint, data, data_destroy);
}
G_DEFINE_TYPE (GimpLayerComboBox, gimp_layer_combo_box,
GIMP_TYPE_INT_COMBO_BOX)
static void
gimp_layer_combo_box_class_init (GimpLayerComboBoxClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
widget_class->drag_data_received = gimp_item_combo_box_drag_data_received;
}
static void
gimp_layer_combo_box_init (GimpLayerComboBox *combo_box)
{
gtk_drag_dest_set (GTK_WIDGET (combo_box),
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
targets + 1, 1,
GDK_ACTION_COPY);
g_object_set_data_full (G_OBJECT (combo_box), "gimp-item-combo-box-private",
g_new0 (GimpItemComboBoxPrivate, 1),
(GDestroyNotify) g_free);
}
/**
* gimp_layer_combo_box_new:
* @constraint: (nullable): A #GimpItemConstraintFunc or %NULL
* @data: (closure constraint): A pointer that is passed to @constraint
* @data_destroy: (destroy data): Destroy function for @data
*
* Creates a new #GimpIntComboBox filled with all currently opened
* layers. See gimp_drawable_combo_box_new() for more information.
*
* Returns: a new #GimpIntComboBox.
*
* Since: 2.2
**/
GtkWidget *
gimp_layer_combo_box_new (GimpItemConstraintFunc constraint,
gpointer data,
GDestroyNotify data_destroy)
{
return gimp_item_combo_box_new (GIMP_TYPE_LAYER_COMBO_BOX,
constraint, data, data_destroy);
}
G_DEFINE_TYPE (GimpPathComboBox, gimp_path_combo_box,
GIMP_TYPE_INT_COMBO_BOX)
static void
gimp_path_combo_box_class_init (GimpPathComboBoxClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
widget_class->drag_data_received = gimp_item_combo_box_drag_data_received;
}
static void
gimp_path_combo_box_init (GimpPathComboBox *combo_box)
{
gtk_drag_dest_set (GTK_WIDGET (combo_box),
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
targets + 2, 1,
GDK_ACTION_COPY);
g_object_set_data_full (G_OBJECT (combo_box), "gimp-item-combo-box-private",
g_new0 (GimpItemComboBoxPrivate, 1),
(GDestroyNotify) g_free);
}
/**
* gimp_path_combo_box_new:
* @constraint: (nullable): A #GimpItemConstraintFunc or %NULL
* @data: (closure constraint): A pointer that is passed to @constraint
* @data_destroy: (destroy data): Destroy function for @data
*
* Creates a new #GimpIntComboBox filled with all currently opened
* path objects. If a @constraint function is specified, it is called for
* each path object and only if the function returns %TRUE, the path
* object is added to the combobox.
*
* You should use gimp_int_combo_box_connect() to initialize and connect
* the combo. Use gimp_int_combo_box_set_active() to set the active
* path ID and gimp_int_combo_box_get_active() to retrieve the ID
* of the selected path object.
*
* Returns: a new #GimpIntComboBox.
*
* Since: 2.4
**/
GtkWidget *
gimp_path_combo_box_new (GimpItemConstraintFunc constraint,
gpointer data,
GDestroyNotify data_destroy)
{
return gimp_item_combo_box_new (GIMP_TYPE_PATH_COMBO_BOX,
constraint, data, data_destroy);
}
static GtkWidget *
gimp_item_combo_box_new (GType type,
GimpItemConstraintFunc constraint,
gpointer data,
GDestroyNotify data_destroy)
{
GimpIntComboBox *combo_box;
GimpItemComboBoxPrivate *private;
combo_box = g_object_new (type,
"width-request", WIDTH_REQUEST,
"ellipsize", PANGO_ELLIPSIZE_MIDDLE,
NULL);
private = GET_PRIVATE (combo_box);
private->constraint = constraint;
private->data = data;
if (data_destroy)
g_object_weak_ref (G_OBJECT (combo_box), (GWeakNotify) data_destroy, data);
gimp_item_combo_box_populate (combo_box);
g_signal_connect (combo_box, "changed",
G_CALLBACK (gimp_item_combo_box_changed),
NULL);
return GTK_WIDGET (combo_box);
}
static void
gimp_item_combo_box_populate (GimpIntComboBox *combo_box)
{
GtkTreeModel *model;
GtkTreeIter iter;
GList *images;
GList *list;
model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box));
images = gimp_list_images ();
for (list = images; list; list = g_list_next (list))
{
GimpImage *image = list->data;
GList *items;
if (GIMP_IS_DRAWABLE_COMBO_BOX (combo_box) ||
GIMP_IS_LAYER_COMBO_BOX (combo_box))
{
items = gimp_image_list_layers (image);
gimp_item_combo_box_model_add (combo_box, GTK_LIST_STORE (model),
image, items, 0);
g_list_free (items);
}
if (GIMP_IS_DRAWABLE_COMBO_BOX (combo_box) ||
GIMP_IS_CHANNEL_COMBO_BOX (combo_box))
{
items = gimp_image_list_channels (image);
gimp_item_combo_box_model_add (combo_box, GTK_LIST_STORE (model),
image, items, 0);
g_list_free (items);
}
if (GIMP_IS_PATH_COMBO_BOX (combo_box))
{
items = gimp_image_list_paths (image);
gimp_item_combo_box_model_add (combo_box, GTK_LIST_STORE (model),
image, items, 0);
g_list_free (items);
}
}
g_list_free (images);
if (gtk_tree_model_get_iter_first (model, &iter))
gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo_box), &iter);
}
static void
gimp_item_combo_box_model_add (GimpIntComboBox *combo_box,
GtkListStore *store,
GimpImage *image,
GList *items,
gint tree_level)
{
GimpItemComboBoxPrivate *private = GET_PRIVATE (combo_box);
GtkTreeIter iter;
GList *list;
gchar *indent;
if (tree_level > 0)
{
indent = g_new (gchar, tree_level + 2);
memset (indent, '-', tree_level);
indent[tree_level] = ' ';
indent[tree_level + 1] = '\0';
}
else
{
indent = g_strdup ("");
}
for (list = items; list; list = g_list_next (list))
{
GimpItem *item = list->data;
gint32 item_id = gimp_item_get_id (item);
if (! private->constraint ||
private->constraint (image, item, private->data))
{
gchar *image_name = gimp_image_get_name (image);
gchar *item_name = gimp_item_get_name (item);
gchar *label;
GdkPixbuf *thumb;
label = g_strdup_printf ("%s%s-%d / %s-%d",
indent, image_name,
gimp_image_get_id (image),
item_name, item_id);
g_free (item_name);
g_free (image_name);
if (GIMP_IS_PATH_COMBO_BOX (combo_box))
thumb = NULL;
else
thumb = gimp_drawable_get_thumbnail (GIMP_DRAWABLE (item),
THUMBNAIL_SIZE, THUMBNAIL_SIZE,
GIMP_PIXBUF_SMALL_CHECKS);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
GIMP_INT_STORE_VALUE, item_id,
GIMP_INT_STORE_LABEL, label,
GIMP_INT_STORE_PIXBUF, thumb,
-1);
if (thumb)
g_object_unref (thumb);
g_free (label);
}
if (gimp_item_is_group (item))
{
GList *children;
children = gimp_item_list_children (item);
gimp_item_combo_box_model_add (combo_box, store,
image, children,
tree_level + 1);
g_list_free (children);
}
}
g_free (indent);
}
static void
gimp_item_combo_box_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection,
guint info,
guint time)
{
gint length = gtk_selection_data_get_length (selection);
gchar *str;
if (gtk_selection_data_get_format (selection) != 8 || length < 1)
{
g_warning ("%s: received invalid item ID data", G_STRFUNC);
return;
}
str = g_strndup ((const gchar *) gtk_selection_data_get_data (selection),
length);
if (g_utf8_validate (str, -1, NULL))
{
gint pid;
gint ID;
if (sscanf (str, "%i:%i", &pid, &ID) == 2 &&
pid == gimp_getpid ())
{
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (widget), ID);
}
}
g_free (str);
}
static gboolean
gimp_item_combo_box_remove_items (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
gint item_ID;
GList **remove = data;
gtk_tree_model_get (model, iter,
GIMP_INT_STORE_VALUE, &item_ID,
-1);
if (item_ID > 0)
*remove = g_list_prepend (*remove, g_memdup2 (iter, sizeof (GtkTreeIter)));
return FALSE;
}
static void
gimp_item_combo_box_changed (GimpIntComboBox *combo_box)
{
gint item_ID;
if (gimp_int_combo_box_get_active (combo_box, &item_ID))
{
if (item_ID > 0 && ! gimp_item_get_by_id (item_ID))
{
GtkTreeModel *model;
GList *remove = NULL;
GList *list;
model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box));
g_signal_stop_emission_by_name (combo_box, "changed");
gtk_tree_model_foreach (model,
gimp_item_combo_box_remove_items,
&remove);
for (list = remove; list; list = g_list_next (list))
gtk_list_store_remove (GTK_LIST_STORE (model), list->data);
g_list_free_full (remove, (GDestroyNotify) g_free);
gimp_item_combo_box_populate (combo_box);
}
}
}
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