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c91fbd54ad04d9b4e87690a794df5f15d9e8d0be
gimp/libgimp/gimpitemcombobox.c
Michael Natterer c91fbd54ad Bug 693797 - Sample colorize fails when you choose current gradient as target 
Fix my last commit and don't delete items in the foreach() callback,
because it's impossible to delete items in foreach(). Instead, collect
them in a list and remove them after foreach().
2013-02-17 01:45:20 +01:00

589 lines
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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
* <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <string.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, vectors).
**/
#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 _GimpVectorsComboBoxClass GimpVectorsComboBoxClass;
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 _GimpVectorsComboBox
{
GimpIntComboBox parent_instance;
};
struct _GimpVectorsComboBoxClass
{
GimpIntComboBoxClass parent_class;
};
static GtkWidget * gimp_item_combo_box_new (GType type,
GimpItemConstraintFunc constraint,
gpointer data);
static void gimp_item_combo_box_populate (GimpIntComboBox *combo_box);
static void gimp_item_combo_box_model_add (GimpIntComboBox *combo_box,
GtkListStore *store,
gint32 image,
gint num_items,
gint32 *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-vectors-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: a #GimpDrawableConstraintFunc or %NULL
* @data: a pointer that is passed to @constraint
*
* 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.
*
* Return value: a new #GimpIntComboBox.
*
* Since: GIMP 2.2
**/
GtkWidget *
gimp_drawable_combo_box_new (GimpDrawableConstraintFunc constraint,
gpointer data)
{
return gimp_item_combo_box_new (GIMP_TYPE_DRAWABLE_COMBO_BOX,
constraint, data);
}
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: a #GimpDrawableConstraintFunc or %NULL
* @data: a pointer that is passed to @constraint
*
* Creates a new #GimpIntComboBox filled with all currently opened
* channels. See gimp_drawable_combo_box_new() for more information.
*
* Return value: a new #GimpIntComboBox.
*
* Since: GIMP 2.2
**/
GtkWidget *
gimp_channel_combo_box_new (GimpDrawableConstraintFunc constraint,
gpointer data)
{
return gimp_item_combo_box_new (GIMP_TYPE_CHANNEL_COMBO_BOX,
constraint, data);
}
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: a #GimpDrawableConstraintFunc or %NULL
* @data: a pointer that is passed to @constraint
*
* Creates a new #GimpIntComboBox filled with all currently opened
* layers. See gimp_drawable_combo_box_new() for more information.
*
* Return value: a new #GimpIntComboBox.
*
* Since: GIMP 2.2
**/
GtkWidget *
gimp_layer_combo_box_new (GimpDrawableConstraintFunc constraint,
gpointer data)
{
return gimp_item_combo_box_new (GIMP_TYPE_LAYER_COMBO_BOX,
constraint, data);
}
G_DEFINE_TYPE (GimpVectorsComboBox, gimp_vectors_combo_box,
GIMP_TYPE_INT_COMBO_BOX)
static void
gimp_vectors_combo_box_class_init (GimpVectorsComboBoxClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
widget_class->drag_data_received = gimp_item_combo_box_drag_data_received;
}
static void
gimp_vectors_combo_box_init (GimpVectorsComboBox *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_vectors_combo_box_new:
* @constraint: a #GimpVectorsConstraintFunc or %NULL
* @data: a pointer that is passed to @constraint
*
* Creates a new #GimpIntComboBox filled with all currently opened
* vectors objects. If a @constraint function is specified, it is called for
* each vectors object and only if the function returns %TRUE, the vectors
* 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
* vectors ID and gimp_int_combo_box_get_active() to retrieve the ID
* of the selected vectors object.
*
* Return value: a new #GimpIntComboBox.
*
* Since: GIMP 2.4
**/
GtkWidget *
gimp_vectors_combo_box_new (GimpVectorsConstraintFunc constraint,
gpointer data)
{
return gimp_item_combo_box_new (GIMP_TYPE_VECTORS_COMBO_BOX,
constraint, data);
}
static GtkWidget *
gimp_item_combo_box_new (GType type,
GimpItemConstraintFunc constraint,
gpointer data)
{
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;
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;
gint32 *images;
gint num_images;
gint i;
model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box));
images = gimp_image_list (&num_images);
for (i = 0; i < num_images; i++)
{
gint32 *items;
gint num_items;
if (GIMP_IS_DRAWABLE_COMBO_BOX (combo_box) ||
GIMP_IS_LAYER_COMBO_BOX (combo_box))
{
items = gimp_image_get_layers (images[i], &num_items);
gimp_item_combo_box_model_add (combo_box, GTK_LIST_STORE (model),
images[i],
num_items, items, 0);
g_free (items);
}
if (GIMP_IS_DRAWABLE_COMBO_BOX (combo_box) ||
GIMP_IS_CHANNEL_COMBO_BOX (combo_box))
{
items = gimp_image_get_channels (images[i], &num_items);
gimp_item_combo_box_model_add (combo_box, GTK_LIST_STORE (model),
images[i],
num_items, items, 0);
g_free (items);
}
if (GIMP_IS_VECTORS_COMBO_BOX (combo_box))
{
items = gimp_image_get_vectors (images[i], &num_items);
gimp_item_combo_box_model_add (combo_box, GTK_LIST_STORE (model),
images[i],
num_items, items, 0);
g_free (items);
}
}
g_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,
gint32 image,
gint num_items,
gint32 *items,
gint tree_level)
{
GimpItemComboBoxPrivate *private = GET_PRIVATE (combo_box);
GtkTreeIter iter;
gint i;
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 (i = 0; i < num_items; i++)
{
if (! private->constraint ||
(* private->constraint) (image, items[i], private->data))
{
gchar *image_name = gimp_image_get_name (image);
gchar *item_name = gimp_item_get_name (items[i]);
gchar *label;
GdkPixbuf *thumb;
label = g_strdup_printf ("%s%s-%d / %s-%d",
indent, image_name, image,
item_name, items[i]);
g_free (item_name);
g_free (image_name);
if (GIMP_IS_VECTORS_COMBO_BOX (combo_box))
thumb = NULL;
else
thumb = gimp_drawable_get_thumbnail (items[i],
THUMBNAIL_SIZE, THUMBNAIL_SIZE,
GIMP_PIXBUF_SMALL_CHECKS);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
GIMP_INT_STORE_VALUE, items[i],
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 (items[i]))
{
gint32 *children;
gint n_children;
children = gimp_item_get_children (items[i], &n_children);
gimp_item_combo_box_model_add (combo_box, store,
image,
n_children, children,
tree_level + 1);
g_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_memdup (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_is_valid (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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