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+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * gimppaletteselectbutton.c
+ * Copyright (C) 2004 Michael Natterer <mitch@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
+ * Library 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 <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "gimp.h"
+
+#include "gimpuitypes.h"
+#include "gimppaletteselectbutton.h"
+#include "gimpuimarshal.h"
+
+#include "libgimp-intl.h"
+
+
+/**
+ * SECTION: gimppaletteselectbutton
+ * @title: GimpPaletteSelect
+ * @short_description: A button which pops up a palette select dialog.
+ *
+ * A button which pops up a palette select dialog.
+ **/
+
+
+#define GIMP_PALETTE_SELECT_BUTTON_GET_PRIVATE(obj) ((GimpPaletteSelectButtonPrivate *) gimp_palette_select_button_get_instance_private ((GimpPaletteSelectButton *) (obj)))
+
+typedef struct _GimpPaletteSelectButtonPrivate GimpPaletteSelectButtonPrivate;
+
+struct _GimpPaletteSelectButtonPrivate
+{
+ gchar *title;
+
+ gchar *palette_name; /* Local copy */
+
+ GtkWidget *inside;
+ GtkWidget *label;
+};
+
+enum
+{
+ PALETTE_SET,
+ LAST_SIGNAL
+};
+
+enum
+{
+ PROP_0,
+ PROP_TITLE,
+ PROP_PALETTE_NAME
+};
+
+
+/* local function prototypes */
+
+static void gimp_palette_select_button_finalize (GObject *object);
+
+static void gimp_palette_select_button_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_palette_select_button_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static void gimp_palette_select_button_clicked (GimpPaletteSelectButton *button);
+
+static void gimp_palette_select_button_callback (const gchar *palette_name,
+ gboolean dialog_closing,
+ gpointer user_data);
+
+static void gimp_palette_select_drag_data_received (GimpPaletteSelectButton *button,
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ GtkSelectionData *selection,
+ guint info,
+ guint time);
+
+static GtkWidget * gimp_palette_select_button_create_inside (GimpPaletteSelectButton *palette_button);
+
+
+static const GtkTargetEntry target = { "application/x-gimp-palette-name", 0 };
+
+static guint palette_button_signals[LAST_SIGNAL] = { 0 };
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpPaletteSelectButton, gimp_palette_select_button,
+ GIMP_TYPE_SELECT_BUTTON)
+
+
+static void
+gimp_palette_select_button_class_init (GimpPaletteSelectButtonClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpSelectButtonClass *select_button_class = GIMP_SELECT_BUTTON_CLASS (klass);
+
+ object_class->finalize = gimp_palette_select_button_finalize;
+ object_class->set_property = gimp_palette_select_button_set_property;
+ object_class->get_property = gimp_palette_select_button_get_property;
+
+ select_button_class->select_destroy = gimp_palette_select_destroy;
+
+ klass->palette_set = NULL;
+
+ /**
+ * GimpPaletteSelectButton:title:
+ *
+ * The title to be used for the palette selection popup dialog.
+ *
+ * Since: 2.4
+ */
+ g_object_class_install_property (object_class, PROP_TITLE,
+ g_param_spec_string ("title",
+ "Title",
+ "The title to be used for the palette selection popup dialog",
+ _("Palette Selection"),
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY));
+
+ /**
+ * GimpPaletteSelectButton:palette-name:
+ *
+ * The name of the currently selected palette.
+ *
+ * Since: 2.4
+ */
+ g_object_class_install_property (object_class, PROP_PALETTE_NAME,
+ g_param_spec_string ("palette-name",
+ "Palette name",
+ "The name of the currently selected palette",
+ NULL,
+ GIMP_PARAM_READWRITE));
+
+ /**
+ * GimpPaletteSelectButton::palette-set:
+ * @widget: the object which received the signal.
+ * @palette_name: the name of the currently selected palette.
+ * @dialog_closing: whether the dialog was closed or not.
+ *
+ * The ::palette-set signal is emitted when the user selects a palette.
+ *
+ * Since: 2.4
+ */
+ palette_button_signals[PALETTE_SET] =
+ g_signal_new ("palette-set",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_FIRST,
+ G_STRUCT_OFFSET (GimpPaletteSelectButtonClass, palette_set),
+ NULL, NULL,
+ _gimpui_marshal_VOID__STRING_BOOLEAN,
+ G_TYPE_NONE, 2,
+ G_TYPE_STRING,
+ G_TYPE_BOOLEAN);
+}
+
+static void
+gimp_palette_select_button_init (GimpPaletteSelectButton *button)
+{
+ GimpPaletteSelectButtonPrivate *priv;
+
+ priv = GIMP_PALETTE_SELECT_BUTTON_GET_PRIVATE (button);
+
+ priv->palette_name = NULL;
+
+ priv->inside = gimp_palette_select_button_create_inside (button);
+ gtk_container_add (GTK_CONTAINER (button), priv->inside);
+}
+
+/**
+ * gimp_palette_select_button_new:
+ * @title: Title of the dialog to use or %NULL to use the default title.
+ * @palette_name: Initial palette name.
+ *
+ * Creates a new #GtkWidget that completely controls the selection of
+ * a palette. This widget is suitable for placement in a table in a
+ * plug-in dialog.
+ *
+ * Returns: A #GtkWidget that you can use in your UI.
+ *
+ * Since: 2.4
+ */
+GtkWidget *
+gimp_palette_select_button_new (const gchar *title,
+ const gchar *palette_name)
+{
+ GtkWidget *button;
+
+ if (title)
+ button = g_object_new (GIMP_TYPE_PALETTE_SELECT_BUTTON,
+ "title", title,
+ "palette-name", palette_name,
+ NULL);
+ else
+ button = g_object_new (GIMP_TYPE_PALETTE_SELECT_BUTTON,
+ "palette-name", palette_name,
+ NULL);
+
+ return button;
+}
+
+/**
+ * gimp_palette_select_button_get_palette:
+ * @button: A #GimpPaletteSelectButton
+ *
+ * Retrieves the name of currently selected palette.
+ *
+ * Returns: an internal copy of the palette name which must not be freed.
+ *
+ * Since: 2.4
+ */
+const gchar *
+gimp_palette_select_button_get_palette (GimpPaletteSelectButton *button)
+{
+ GimpPaletteSelectButtonPrivate *priv;
+
+ g_return_val_if_fail (GIMP_IS_PALETTE_SELECT_BUTTON (button), NULL);
+
+ priv = GIMP_PALETTE_SELECT_BUTTON_GET_PRIVATE (button);
+ return priv->palette_name;
+}
+
+/**
+ * gimp_palette_select_button_set_palette:
+ * @button: A #GimpPaletteSelectButton
+ * @palette_name: Palette name to set; %NULL means no change.
+ *
+ * Sets the current palette for the palette select button.
+ *
+ * Since: 2.4
+ */
+void
+gimp_palette_select_button_set_palette (GimpPaletteSelectButton *button,
+ const gchar *palette_name)
+{
+ GimpSelectButton *select_button;
+
+ g_return_if_fail (GIMP_IS_PALETTE_SELECT_BUTTON (button));
+
+ select_button = GIMP_SELECT_BUTTON (button);
+
+ if (select_button->temp_callback)
+ {
+ gimp_palettes_set_popup (select_button->temp_callback, palette_name);
+ }
+ else
+ {
+ gchar *name;
+ gint num_colors;
+
+ if (palette_name && *palette_name)
+ name = g_strdup (palette_name);
+ else
+ name = gimp_context_get_palette ();
+
+ if (gimp_palette_get_info (name, &num_colors))
+ gimp_palette_select_button_callback (name, FALSE, button);
+
+ g_free (name);
+ }
+}
+
+
+/* private functions */
+
+static void
+gimp_palette_select_button_finalize (GObject *object)
+{
+ GimpPaletteSelectButtonPrivate *priv;
+
+ priv = GIMP_PALETTE_SELECT_BUTTON_GET_PRIVATE (object);
+
+ g_clear_pointer (&priv->palette_name, g_free);
+ g_clear_pointer (&priv->title, g_free);
+
+ G_OBJECT_CLASS (gimp_palette_select_button_parent_class)->finalize (object);
+}
+
+static void
+gimp_palette_select_button_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpPaletteSelectButton *button;
+ GimpPaletteSelectButtonPrivate *priv;
+
+ button = GIMP_PALETTE_SELECT_BUTTON (object);
+ priv = GIMP_PALETTE_SELECT_BUTTON_GET_PRIVATE (button);
+
+ switch (property_id)
+ {
+ case PROP_TITLE:
+ priv->title = g_value_dup_string (value);
+ break;
+ case PROP_PALETTE_NAME:
+ gimp_palette_select_button_set_palette (button,
+ g_value_get_string (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_palette_select_button_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpPaletteSelectButton *button;
+ GimpPaletteSelectButtonPrivate *priv;
+
+ button = GIMP_PALETTE_SELECT_BUTTON (object);
+ priv = GIMP_PALETTE_SELECT_BUTTON_GET_PRIVATE (button);
+
+ switch (property_id)
+ {
+ case PROP_TITLE:
+ g_value_set_string (value, priv->title);
+ break;
+ case PROP_PALETTE_NAME:
+ g_value_set_string (value, priv->palette_name);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_palette_select_button_callback (const gchar *palette_name,
+ gboolean dialog_closing,
+ gpointer user_data)
+{
+ GimpPaletteSelectButton *button;
+ GimpPaletteSelectButtonPrivate *priv;
+ GimpSelectButton *select_button;
+
+ button = GIMP_PALETTE_SELECT_BUTTON (user_data);
+
+ priv = GIMP_PALETTE_SELECT_BUTTON_GET_PRIVATE (button);
+ select_button = GIMP_SELECT_BUTTON (button);
+
+ g_free (priv->palette_name);
+ priv->palette_name = g_strdup (palette_name);
+
+ gtk_label_set_text (GTK_LABEL (priv->label), palette_name);
+
+ if (dialog_closing)
+ select_button->temp_callback = NULL;
+
+ g_signal_emit (button, palette_button_signals[PALETTE_SET], 0,
+ palette_name, dialog_closing);
+ g_object_notify (G_OBJECT (button), "palette-name");
+}
+
+static void
+gimp_palette_select_button_clicked (GimpPaletteSelectButton *button)
+{
+ GimpPaletteSelectButtonPrivate *priv;
+ GimpSelectButton *select_button;
+
+ priv = GIMP_PALETTE_SELECT_BUTTON_GET_PRIVATE (button);
+ select_button = GIMP_SELECT_BUTTON (button);
+
+ if (select_button->temp_callback)
+ {
+ /* calling gimp_palettes_set_popup() raises the dialog */
+ gimp_palettes_set_popup (select_button->temp_callback,
+ priv->palette_name);
+ }
+ else
+ {
+ select_button->temp_callback =
+ gimp_palette_select_new (priv->title, priv->palette_name,
+ gimp_palette_select_button_callback,
+ button);
+ }
+}
+
+static void
+gimp_palette_select_drag_data_received (GimpPaletteSelectButton *button,
+ 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 palette 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;
+ gpointer unused;
+ gint name_offset = 0;
+
+ if (sscanf (str, "%i:%p:%n", &pid, &unused, &name_offset) >= 2 &&
+ pid == gimp_getpid () && name_offset > 0)
+ {
+ gchar *name = str + name_offset;
+
+ gimp_palette_select_button_set_palette (button, name);
+ }
+ }
+
+ g_free (str);
+}
+
+static GtkWidget *
+gimp_palette_select_button_create_inside (GimpPaletteSelectButton *palette_button)
+{
+ GtkWidget *button;
+ GtkWidget *hbox;
+ GtkWidget *image;
+ GimpPaletteSelectButtonPrivate *priv;
+
+ priv = GIMP_PALETTE_SELECT_BUTTON_GET_PRIVATE (palette_button);
+
+ gtk_widget_push_composite_child ();
+
+ button = gtk_button_new ();
+
+ hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
+ gtk_container_add (GTK_CONTAINER (button), hbox);
+
+ image = gtk_image_new_from_icon_name (GIMP_ICON_PALETTE,
+ GTK_ICON_SIZE_BUTTON);
+ gtk_box_pack_start (GTK_BOX (hbox), image, FALSE, FALSE, 0);
+
+ priv->label = gtk_label_new (priv->palette_name);
+ gtk_box_pack_start (GTK_BOX (hbox), priv->label, TRUE, TRUE, 4);
+
+ gtk_widget_show_all (button);
+
+ g_signal_connect_swapped (button, "clicked",
+ G_CALLBACK (gimp_palette_select_button_clicked),
+ palette_button);
+
+ gtk_drag_dest_set (GTK_WIDGET (button),
+ GTK_DEST_DEFAULT_HIGHLIGHT |
+ GTK_DEST_DEFAULT_MOTION |
+ GTK_DEST_DEFAULT_DROP,
+ &target, 1,
+ GDK_ACTION_COPY);
+
+ g_signal_connect_swapped (button, "drag-data-received",
+ G_CALLBACK (gimp_palette_select_drag_data_received),
+ palette_button);
+
+ gtk_widget_pop_composite_child ();
+
+ return button;
+}
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