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gimp/libgimpwidgets/gimpcolorbutton.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpcolorbutton.c
* Copyright (C) 1999-2001 Sven Neumann
*
* 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 <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "gimpwidgetstypes.h"
#include "gimpcolorarea.h"
#include "gimpcolorbutton.h"
#include "libgimp/gimppalette_pdb.h"
#include "libgimp/libgimp-intl.h"
static void gimp_color_button_class_init (GimpColorButtonClass *klass);
static void gimp_color_button_init (GimpColorButton *gcb);
static void gimp_color_button_destroy (GtkObject *object);
static void gimp_color_button_clicked (GtkButton *button);
static void gimp_color_button_state_changed (GtkWidget *widget,
GtkStateType previous_state);
static void gimp_color_button_dialog_ok (GtkWidget *widget,
gpointer data);
static void gimp_color_button_dialog_cancel (GtkWidget *widget,
gpointer data);
static void gimp_color_button_use_fg (gpointer callback_data,
guint callback_action,
GtkWidget *widget);
static void gimp_color_button_use_bg (gpointer callback_data,
guint callback_action,
GtkWidget *widget);
static gint gimp_color_button_menu_popup (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static gchar * gimp_color_button_menu_translate (const gchar *path,
gpointer func_data);
static void gimp_color_button_color_changed (GtkObject *object,
gpointer data);
static GtkItemFactoryEntry menu_items[] =
{
{ N_("/Use Foreground Color"), NULL, gimp_color_button_use_fg, 2, NULL },
{ N_("/Use Background Color"), NULL, gimp_color_button_use_bg, 2, NULL }
};
static gint nmenu_items = sizeof (menu_items) / sizeof (menu_items[0]);
enum
{
COLOR_CHANGED,
LAST_SIGNAL
};
static guint gimp_color_button_signals[LAST_SIGNAL] = { 0 };
static GtkPreviewClass *parent_class = NULL;
static void
gimp_color_button_destroy (GtkObject *object)
{
GimpColorButton *gcb = GIMP_COLOR_BUTTON (object);
g_return_if_fail (gcb != NULL);
if (gcb->title)
{
g_free (gcb->title);
gcb->title = NULL;
}
if (gcb->dialog)
{
gtk_widget_destroy (gcb->dialog);
gcb->dialog = NULL;
}
if (gcb->color_area)
{
gtk_widget_destroy (gcb->color_area);
gcb->color_area = NULL;
}
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
gimp_color_button_class_init (GimpColorButtonClass *klass)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkButtonClass *button_class;
object_class = (GtkObjectClass *) klass;
widget_class = (GtkWidgetClass *) klass;
button_class = (GtkButtonClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gimp_color_button_signals[COLOR_CHANGED] =
g_signal_new ("color_changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpColorButtonClass, color_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
klass->color_changed = NULL;
object_class->destroy = gimp_color_button_destroy;
widget_class->state_changed = gimp_color_button_state_changed;
button_class->clicked = gimp_color_button_clicked;
}
static void
gimp_color_button_init (GimpColorButton *gcb)
{
GimpRGB color;
gcb->title = NULL;
gcb->dialog = NULL;
gimp_rgba_set (&color, 0.0, 0.0, 0.0, 1.0);
gcb->color_area = gimp_color_area_new (&color, FALSE, GDK_BUTTON2_MASK);
g_signal_connect (G_OBJECT (gcb->color_area), "color_changed",
G_CALLBACK (gimp_color_button_color_changed),
gcb);
gtk_container_add (GTK_CONTAINER (gcb), gcb->color_area);
gtk_widget_show (gcb->color_area);
/* right-click opens a popup */
gcb->item_factory = gtk_item_factory_new (GTK_TYPE_MENU, "<popup>", NULL);
gtk_item_factory_set_translate_func (gcb->item_factory,
gimp_color_button_menu_translate,
NULL, NULL);
gtk_item_factory_create_items (gcb->item_factory,
nmenu_items, menu_items, gcb);
g_signal_connect (G_OBJECT (gcb), "button_press_event",
G_CALLBACK (gimp_color_button_menu_popup),
gcb);
}
GtkType
gimp_color_button_get_type (void)
{
static guint gcb_type = 0;
if (!gcb_type)
{
GtkTypeInfo gcb_info =
{
"GimpColorButton",
sizeof (GimpColorButton),
sizeof (GimpColorButtonClass),
(GtkClassInitFunc) gimp_color_button_class_init,
(GtkObjectInitFunc) gimp_color_button_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
gcb_type = gtk_type_unique (gtk_button_get_type (), &gcb_info);
}
return gcb_type;
}
/**
* gimp_color_button_new:
* @title: String that will be used as title for the color_selector.
* @width: Width of the colorpreview in pixels.
* @height: Height of the colorpreview in pixels.
* @color: A pointer to a #GimpRGB color.
* @type:
*
* Creates a new #GimpColorButton widget.
*
* This returns a button with a preview showing the color.
* When the button is clicked a GtkColorSelectionDialog is opened.
* If the user changes the color the new color is written into the
* array that was used to pass the initial color and the "color_changed"
* signal is emitted.
*
* Returns: Pointer to the new #GimpColorButton widget.
**/
GtkWidget *
gimp_color_button_new (const gchar *title,
gint width,
gint height,
const GimpRGB *color,
GimpColorAreaType type)
{
GimpColorButton *gcb;
g_return_val_if_fail (color != NULL, NULL);
gcb = gtk_type_new (gimp_color_button_get_type ());
gcb->title = g_strdup (title);
gtk_widget_set_usize (GTK_WIDGET (gcb->color_area), width, height);
gimp_color_area_set_color (GIMP_COLOR_AREA (gcb->color_area), color);
gimp_color_area_set_type (GIMP_COLOR_AREA (gcb->color_area), type);
return GTK_WIDGET (gcb);
}
/**
* gimp_color_button_set_color:
* @gcb: Pointer to a #GimpColorButton.
* @color: Pointer to the new #GimpRGB color.
*
**/
void
gimp_color_button_set_color (GimpColorButton *gcb,
const GimpRGB *color)
{
g_return_if_fail (gcb != NULL);
g_return_if_fail (GIMP_IS_COLOR_BUTTON (gcb));
g_return_if_fail (color != NULL);
gimp_color_area_set_color (GIMP_COLOR_AREA (gcb->color_area), color);
}
/**
* gimp_color_button_get_color:
* @gcb: Pointer to a #GimpColorButton.
* @color:
*
**/
void
gimp_color_button_get_color (GimpColorButton *gcb,
GimpRGB *color)
{
g_return_if_fail (gcb != NULL);
g_return_if_fail (color != NULL);
g_return_if_fail (color != NULL);
gimp_color_area_get_color (GIMP_COLOR_AREA (gcb->color_area), color);
}
/**
* gimp_color_button_has_alpha:
* @gcb: Pointer to a #GimpColorButton.
*
*
* Returns:
**/
gboolean
gimp_color_button_has_alpha (GimpColorButton *gcb)
{
g_return_val_if_fail (gcb != NULL, FALSE);
return gimp_color_area_has_alpha (GIMP_COLOR_AREA (gcb->color_area));
}
void
gimp_color_button_set_type (GimpColorButton *gcb,
GimpColorAreaType type)
{
g_return_if_fail (gcb != NULL);
gimp_color_area_set_type (GIMP_COLOR_AREA (gcb->color_area), type);
}
static void
gimp_color_button_state_changed (GtkWidget *widget,
GtkStateType previous_state)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GIMP_IS_COLOR_BUTTON (widget));
if (!GTK_WIDGET_IS_SENSITIVE (widget) && GIMP_COLOR_BUTTON (widget)->dialog)
gtk_widget_hide (GIMP_COLOR_BUTTON (widget)->dialog);
if (GTK_WIDGET_CLASS (parent_class)->state_changed)
GTK_WIDGET_CLASS (parent_class)->state_changed (widget, previous_state);
}
static gint
gimp_color_button_menu_popup (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
GimpColorButton *gcb;
GdkEventButton *bevent;
gint x;
gint y;
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (GIMP_IS_COLOR_BUTTON (data), FALSE);
gcb = GIMP_COLOR_BUTTON (data);
if (event->type != GDK_BUTTON_PRESS)
return FALSE;
bevent = (GdkEventButton *) event;
if (bevent->button != 3)
return FALSE;
gdk_window_get_origin (GTK_WIDGET (widget)->window, &x, &y);
gtk_item_factory_popup (gcb->item_factory,
x + bevent->x, y + bevent->y,
bevent->button, bevent->time);
return (TRUE);
}
static void
gimp_color_button_clicked (GtkButton *button)
{
GimpColorButton *gcb;
GimpRGB color;
gdouble dcolor[4];
g_return_if_fail (button != NULL);
g_return_if_fail (GIMP_IS_COLOR_BUTTON (button));
gcb = GIMP_COLOR_BUTTON (button);
gimp_color_button_get_color (gcb, &color);
dcolor[0] = color.r;
dcolor[1] = color.g;
dcolor[2] = color.b;
dcolor[3] = color.a;
if (!gcb->dialog)
{
gcb->dialog = gtk_color_selection_dialog_new (gcb->title);
gtk_color_selection_set_current_alpha (GTK_COLOR_SELECTION (GTK_COLOR_SELECTION_DIALOG (gcb->dialog)->colorsel), gimp_color_button_has_alpha (gcb));
gtk_color_selection_set_color (GTK_COLOR_SELECTION (GTK_COLOR_SELECTION_DIALOG (gcb->dialog)->colorsel), dcolor);
gtk_widget_destroy (GTK_COLOR_SELECTION_DIALOG (gcb->dialog)->help_button);
gtk_container_set_border_width (GTK_CONTAINER (gcb->dialog), 2);
g_signal_connect (G_OBJECT (gcb->dialog), "destroy",
G_CALLBACK (gtk_widget_destroyed),
&gcb->dialog);
g_signal_connect (G_OBJECT (GTK_COLOR_SELECTION_DIALOG (gcb->dialog)->ok_button),
"clicked",
G_CALLBACK (gimp_color_button_dialog_ok),
gcb);
g_signal_connect (G_OBJECT (GTK_COLOR_SELECTION_DIALOG (gcb->dialog)->cancel_button),
"clicked",
G_CALLBACK (gimp_color_button_dialog_cancel),
gcb);
gtk_window_set_position (GTK_WINDOW (gcb->dialog), GTK_WIN_POS_MOUSE);
}
gtk_color_selection_set_color (GTK_COLOR_SELECTION (GTK_COLOR_SELECTION_DIALOG (gcb->dialog)->colorsel), dcolor);
gtk_widget_show (gcb->dialog);
}
static void
gimp_color_button_dialog_ok (GtkWidget *widget,
gpointer data)
{
GimpColorButton *gcb;
GimpRGB color;
gdouble dcolor[4];
g_return_if_fail (data != NULL);
g_return_if_fail (GIMP_IS_COLOR_BUTTON (data));
gcb = GIMP_COLOR_BUTTON (data);
gtk_color_selection_get_color (GTK_COLOR_SELECTION (GTK_COLOR_SELECTION_DIALOG (gcb->dialog)->colorsel), dcolor);
gimp_rgba_set (&color, dcolor[0], dcolor[1], dcolor[2], dcolor[3]);
gimp_color_button_set_color (gcb, &color);
gtk_widget_hide (gcb->dialog);
}
static void
gimp_color_button_dialog_cancel (GtkWidget *widget,
gpointer data)
{
g_return_if_fail (data != NULL);
g_return_if_fail (GIMP_IS_COLOR_BUTTON (data));
gtk_widget_hide (GIMP_COLOR_BUTTON (data)->dialog);
}
static void
gimp_color_button_use_fg (gpointer callback_data,
guint callback_action,
GtkWidget *widget)
{
GimpRGB color;
g_return_if_fail (callback_data != NULL);
g_return_if_fail (GIMP_IS_COLOR_BUTTON (callback_data));
gimp_color_button_get_color (GIMP_COLOR_BUTTON (callback_data), &color);
gimp_palette_get_foreground (&color);
gimp_color_button_set_color (GIMP_COLOR_BUTTON (callback_data), &color);
}
static void
gimp_color_button_use_bg (gpointer callback_data,
guint callback_action,
GtkWidget *widget)
{
GimpRGB color;
g_return_if_fail (callback_data != NULL);
g_return_if_fail (GIMP_IS_COLOR_BUTTON (callback_data));
gimp_color_button_get_color (GIMP_COLOR_BUTTON (callback_data), &color);
gimp_palette_get_background (&color);
gimp_color_button_set_color (GIMP_COLOR_BUTTON (callback_data), &color);
}
static void
gimp_color_button_color_changed (GtkObject *object,
gpointer data)
{
GimpColorButton *gcb = GIMP_COLOR_BUTTON (data);
if (gcb->dialog)
{
GimpRGB color;
gdouble dcolor[4];
gimp_color_button_get_color (GIMP_COLOR_BUTTON (data), &color);
dcolor[0] = color.r;
dcolor[1] = color.g;
dcolor[2] = color.b;
dcolor[3] = color.a;
gtk_color_selection_set_color (GTK_COLOR_SELECTION (GTK_COLOR_SELECTION_DIALOG (gcb->dialog)->colorsel), dcolor);
}
g_signal_emit (G_OBJECT (gcb),
gimp_color_button_signals[COLOR_CHANGED], 0);
}
static gchar *
gimp_color_button_menu_translate (const gchar *path,
gpointer func_data)
{
return (gettext (path));
}
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