mirror of https://github.com/GNOME/gimp.git
295 lines
8.8 KiB
C
295 lines
8.8 KiB
C
/* LIBGIMP - The GIMP Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* gimpimagecombobox.c
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* Copyright (C) 2004 Sven Neumann <sven@gimp.org>
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*
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* This library is free software: you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libgimpwidgets/gimpwidgets.h"
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#include "gimp.h"
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#include "gimpuitypes.h"
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#include "gimpimagecombobox.h"
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#include "gimppixbuf.h"
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/**
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* SECTION: gimpimagecombobox
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* @title: GimpImageComboBox
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* @short_description: A widget providing a popup menu of images.
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*
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* A widget providing a popup menu of images.
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**/
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#define THUMBNAIL_SIZE 24
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#define WIDTH_REQUEST 200
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typedef struct _GimpImageComboBoxClass GimpImageComboBoxClass;
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struct _GimpImageComboBox
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{
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GimpIntComboBox parent_instance;
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GimpImageConstraintFunc constraint;
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gpointer data;
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GDestroyNotify data_destroy;
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};
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struct _GimpImageComboBoxClass
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{
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GimpIntComboBoxClass parent_class;
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};
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static void gimp_image_combo_box_finalize (GObject *object);
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static void gimp_image_combo_box_populate (GimpImageComboBox *combo_box);
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static void gimp_image_combo_box_model_add (GtkListStore *store,
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GList *images,
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GimpImageConstraintFunc constraint,
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gpointer data);
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static void gimp_image_combo_box_drag_data_received (GtkWidget *widget,
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GdkDragContext *context,
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gint x,
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gint y,
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GtkSelectionData *selection,
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guint info,
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guint time);
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static void gimp_image_combo_box_changed (GimpImageComboBox *combo_box);
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static const GtkTargetEntry target = { "application/x-gimp-image-id", 0 };
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G_DEFINE_TYPE (GimpImageComboBox, gimp_image_combo_box,
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GIMP_TYPE_INT_COMBO_BOX)
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#define parent_class gimp_image_combo_box_parent_class
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static void
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gimp_image_combo_box_class_init (GimpImageComboBoxClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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object_class->finalize = gimp_image_combo_box_finalize;
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widget_class->drag_data_received = gimp_image_combo_box_drag_data_received;
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}
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static void
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gimp_image_combo_box_init (GimpImageComboBox *combo_box)
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{
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gtk_drag_dest_set (GTK_WIDGET (combo_box),
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GTK_DEST_DEFAULT_HIGHLIGHT |
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GTK_DEST_DEFAULT_MOTION |
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GTK_DEST_DEFAULT_DROP,
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&target, 1,
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GDK_ACTION_COPY);
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}
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static void
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gimp_image_combo_box_finalize (GObject *object)
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{
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GimpImageComboBox *combo = GIMP_IMAGE_COMBO_BOX (object);
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if (combo->data_destroy)
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combo->data_destroy (combo->data);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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/**
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* gimp_image_combo_box_new:
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* @constraint: a #GimpImageConstraintFunc or %NULL
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* @data: a pointer that is passed to @constraint
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* @data_destroy: Destroy function for @data.
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*
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* Creates a new #GimpIntComboBox filled with all currently opened
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* images. If a @constraint function is specified, it is called for
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* each image and only if the function returns %TRUE, the image is
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* added to the combobox.
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*
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* You should use gimp_int_combo_box_connect() to initialize and
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* connect the combo. Use gimp_int_combo_box_set_active() to get the
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* active image ID and gimp_int_combo_box_get_active() to retrieve the
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* ID of the selected image.
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*
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* Returns: a new #GimpIntComboBox.
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*
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* Since: 2.2
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**/
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GtkWidget *
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gimp_image_combo_box_new (GimpImageConstraintFunc constraint,
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gpointer data,
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GDestroyNotify data_destroy)
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{
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GimpImageComboBox *combo_box;
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combo_box = g_object_new (GIMP_TYPE_IMAGE_COMBO_BOX,
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"width-request", WIDTH_REQUEST,
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"ellipsize", PANGO_ELLIPSIZE_MIDDLE,
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NULL);
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combo_box->constraint = constraint;
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combo_box->data = data;
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combo_box->data_destroy = data_destroy;
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gimp_image_combo_box_populate (combo_box);
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g_signal_connect (combo_box, "changed",
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G_CALLBACK (gimp_image_combo_box_changed),
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NULL);
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return GTK_WIDGET (combo_box);
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}
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static void
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gimp_image_combo_box_populate (GimpImageComboBox *combo_box)
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{
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GtkTreeModel *model;
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GtkTreeIter iter;
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GList *images;
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model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box));
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images = gimp_list_images ();
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gimp_image_combo_box_model_add (GTK_LIST_STORE (model), images,
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combo_box->constraint,
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combo_box->data);
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g_list_free (images);
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if (gtk_tree_model_get_iter_first (model, &iter))
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gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo_box), &iter);
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}
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static void
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gimp_image_combo_box_model_add (GtkListStore *store,
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GList *images,
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GimpImageConstraintFunc constraint,
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gpointer data)
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{
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GtkTreeIter iter;
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GList *list;
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for (list = images; list; list = g_list_next (list))
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{
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GimpImage *image = list->data;
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gint32 image_id = gimp_image_get_id (image);
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if (! constraint || constraint (image, data))
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{
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gchar *image_name = gimp_image_get_name (image);
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gchar *label;
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GdkPixbuf *thumb;
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label = g_strdup_printf ("%s-%d", image_name, image_id);
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g_free (image_name);
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thumb = gimp_image_get_thumbnail (image,
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THUMBNAIL_SIZE, THUMBNAIL_SIZE,
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GIMP_PIXBUF_SMALL_CHECKS);
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gtk_list_store_append (store, &iter);
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gtk_list_store_set (store, &iter,
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GIMP_INT_STORE_VALUE, image_id,
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GIMP_INT_STORE_LABEL, label,
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GIMP_INT_STORE_PIXBUF, thumb,
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-1);
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if (thumb)
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g_object_unref (thumb);
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g_free (label);
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}
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}
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}
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static void
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gimp_image_combo_box_drag_data_received (GtkWidget *widget,
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GdkDragContext *context,
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gint x,
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gint y,
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GtkSelectionData *selection,
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guint info,
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guint time)
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{
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gint length = gtk_selection_data_get_length (selection);
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gchar *str;
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if (gtk_selection_data_get_format (selection) != 8 || length < 1)
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{
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g_warning ("%s: received invalid image ID data", G_STRFUNC);
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return;
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}
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str = g_strndup ((const gchar *) gtk_selection_data_get_data (selection),
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length);
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if (g_utf8_validate (str, -1, NULL))
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{
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gint pid;
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gint ID;
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if (sscanf (str, "%i:%i", &pid, &ID) == 2 &&
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pid == gimp_getpid ())
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{
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gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (widget), ID);
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}
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}
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g_free (str);
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}
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static void
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gimp_image_combo_box_changed (GimpImageComboBox *combo_box)
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{
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gint image_ID;
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if (gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (combo_box),
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&image_ID))
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{
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if (! gimp_image_get_by_id (image_ID))
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{
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GtkTreeModel *model;
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model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box));
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g_signal_stop_emission_by_name (combo_box, "changed");
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gtk_list_store_clear (GTK_LIST_STORE (model));
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gimp_image_combo_box_populate (combo_box);
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}
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}
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}
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