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gimp/libgimp/gimppalettemenu.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimppalettemenu.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 2 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gimp.h"
#include "gimpui.h"
#include "libgimp-intl.h"
#define PALETTE_SELECT_DATA_KEY "gimp-palette-selct-data"
typedef struct _PaletteSelect PaletteSelect;
struct _PaletteSelect
{
gchar *title;
GimpRunPaletteCallback callback;
gpointer data;
GtkWidget *button;
GtkWidget *label;
gchar *palette_name; /* Local copy */
const gchar *temp_palette_callback;
};
/* local function prototypes */
static void gimp_palette_select_widget_callback (const gchar *name,
gboolean closing,
gpointer data);
static void gimp_palette_select_widget_clicked (GtkWidget *widget,
PaletteSelect *palette_sel);
static void gimp_palette_select_widget_destroy (GtkWidget *widget,
PaletteSelect *palette_sel);
static void gimp_palette_select_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection,
guint info,
guint time);
static const GtkTargetEntry target = { "application/x-gimp-palette-name", 0 };
/**
* gimp_palette_select_widget_new:
* @title: Title of the dialog to use or %NULL means to use the default
* title.
* @palette_name: Initial palette name.
* @callback: A function to call when the selected palette changes.
* @data: A pointer to arbitary data to be used in the call to @callback.
*
* 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: GIMP 2.2
*/
GtkWidget *
gimp_palette_select_widget_new (const gchar *title,
const gchar *palette_name,
GimpRunPaletteCallback callback,
gpointer data)
{
PaletteSelect *palette_sel;
GtkWidget *hbox;
GtkWidget *image;
g_return_val_if_fail (callback != NULL, NULL);
if (! title)
title = _("Palette Selection");
palette_sel = g_new0 (PaletteSelect, 1);
palette_sel->title = g_strdup (title);
palette_sel->callback = callback;
palette_sel->data = data;
palette_sel->palette_name = g_strdup (palette_name);
palette_sel->button = gtk_button_new ();
g_signal_connect (palette_sel->button, "clicked",
G_CALLBACK (gimp_palette_select_widget_clicked),
palette_sel);
g_signal_connect (palette_sel->button, "destroy",
G_CALLBACK (gimp_palette_select_widget_destroy),
palette_sel);
gtk_drag_dest_set (GTK_WIDGET (palette_sel->button),
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
&target, 1,
GDK_ACTION_COPY);
g_signal_connect (palette_sel->button, "drag-data-received",
G_CALLBACK (gimp_palette_select_drag_data_received),
NULL);
hbox = gtk_hbox_new (FALSE, 4);
gtk_container_add (GTK_CONTAINER (palette_sel->button), hbox);
gtk_widget_show (hbox);
image = gtk_image_new_from_stock (GIMP_STOCK_PALETTE, GTK_ICON_SIZE_BUTTON);
gtk_box_pack_start (GTK_BOX (hbox), image, FALSE, FALSE, 0);
gtk_widget_show (image);
palette_sel->label = gtk_label_new (palette_name);
gtk_box_pack_start (GTK_BOX (hbox), palette_sel->label, TRUE, TRUE, 4);
gtk_widget_show (palette_sel->label);
g_object_set_data (G_OBJECT (palette_sel->button),
PALETTE_SELECT_DATA_KEY, palette_sel);
return palette_sel->button;
}
/**
* gimp_palette_select_widget_close:
* @widget: A palette select widget.
*
* Closes the popup window associated with @widget.
*
* Since: GIMP 2.2
*/
void
gimp_palette_select_widget_close (GtkWidget *widget)
{
PaletteSelect *palette_sel;
palette_sel = g_object_get_data (G_OBJECT (widget), PALETTE_SELECT_DATA_KEY);
g_return_if_fail (palette_sel != NULL);
if (palette_sel->temp_palette_callback)
{
gimp_palette_select_destroy (palette_sel->temp_palette_callback);
palette_sel->temp_palette_callback = NULL;
}
}
/**
* gimp_palette_select_widget_set;
* @widget: A palette select widget.
* @palette_name: Palette name to set; %NULL means no change.
*
* Sets the current palette for the palette select widget. Calls the
* callback function if one was supplied in the call to
* gimp_palette_select_widget_new().
*
* Since: GIMP 2.2
*/
void
gimp_palette_select_widget_set (GtkWidget *widget,
const gchar *palette_name)
{
PaletteSelect *palette_sel;
palette_sel = g_object_get_data (G_OBJECT (widget), PALETTE_SELECT_DATA_KEY);
g_return_if_fail (palette_sel != NULL);
if (palette_sel->temp_palette_callback)
gimp_palettes_set_popup (palette_sel->temp_palette_callback, palette_name);
else
gimp_palette_select_widget_callback (palette_name, FALSE, palette_sel);
}
/* private functions */
static void
gimp_palette_select_widget_callback (const gchar *name,
gboolean closing,
gpointer data)
{
PaletteSelect *palette_sel = (PaletteSelect *) data;
g_free (palette_sel->palette_name);
palette_sel->palette_name = g_strdup (name);
gtk_label_set_text (GTK_LABEL (palette_sel->label), name);
if (palette_sel->callback)
palette_sel->callback (name, closing, palette_sel->data);
if (closing)
palette_sel->temp_palette_callback = NULL;
}
static void
gimp_palette_select_widget_clicked (GtkWidget *widget,
PaletteSelect *palette_sel)
{
if (palette_sel->temp_palette_callback)
{
/* calling gimp_palettes_set_popup() raises the dialog */
gimp_palettes_set_popup (palette_sel->temp_palette_callback,
palette_sel->palette_name);
}
else
{
palette_sel->temp_palette_callback =
gimp_palette_select_new (palette_sel->title,
palette_sel->palette_name,
gimp_palette_select_widget_callback,
palette_sel);
}
}
static void
gimp_palette_select_widget_destroy (GtkWidget *widget,
PaletteSelect *palette_sel)
{
if (palette_sel->temp_palette_callback)
{
gimp_palette_select_destroy (palette_sel->temp_palette_callback);
palette_sel->temp_palette_callback = NULL;
}
g_free (palette_sel->title);
g_free (palette_sel->palette_name);
g_free (palette_sel);
}
static void
gimp_palette_select_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection,
guint info,
guint time)
{
gchar *str;
if ((selection->format != 8) || (selection->length < 1))
{
g_warning ("Received invalid palette data!");
return;
}
str = g_strndup ((const gchar *) selection->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_widget_set (widget, name);
}
}
g_free (str);
}
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