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Diffstat (limited to 'libgimp/gimpitemcombobox.c')
| -rw-r--r-- | libgimp/gimpitemcombobox.c | 589 |
1 files changed, 589 insertions, 0 deletions
diff --git a/libgimp/gimpitemcombobox.c b/libgimp/gimpitemcombobox.c new file mode 100644 index 0000000..07d5007 --- /dev/null +++ b/libgimp/gimpitemcombobox.c @@ -0,0 +1,589 @@ +/* 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, 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: 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: 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: 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: 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); + } + } +} |