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gimp/libgimp/gimppaletteselectbutton.c

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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
* <http://www.gnu.org/licenses/>.
*/
#include "config.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) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GIMP_TYPE_PALETTE_SELECT_BUTTON, GimpPaletteSelectButtonPrivate))
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 (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: GIMP 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: GIMP 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: GIMP 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);
g_type_class_add_private (object_class,
sizeof (GimpPaletteSelectButtonPrivate));
}
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: GIMP 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: GIMP 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: GIMP 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_free (priv->palette_name);
priv->palette_name = NULL;
g_free (priv->title);
priv->title = NULL;
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_stock (GIMP_STOCK_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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