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gimp/libgimpwidgets/gimpunitmenu.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1999 Peter Mattis and Spencer Kimball
*
* gimpunitmenu.c
* Copyright (C) 1999 Michael Natterer <mitschel@cs.tu-berlin.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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 Library 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 "gimpunitmenu.h"
#include "libgimp/gimpintl.h"
/* private functions */
static const gchar * gimp_unit_menu_build_string (gchar *format,
GUnit unit);
static void gimp_unit_menu_callback (GtkWidget *widget,
gpointer data);
enum {
GUM_UNIT_CHANGED_SIGNAL,
LAST_SIGNAL
};
static gint gimp_unit_menu_signals[LAST_SIGNAL] = { 0 };
static GtkOptionMenuClass *parent_class = NULL;
static void
gimp_unit_menu_class_destroy (GtkObject *object)
{
GimpUnitMenu *gum;
g_return_if_fail (object != NULL);
g_return_if_fail (GIMP_IS_UNIT_MENU (object));
gum = GIMP_UNIT_MENU (object);
g_free (gum->format);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
gimp_unit_menu_class_init (GimpUnitMenuClass *class)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass*) class;
parent_class = gtk_type_class (gtk_option_menu_get_type ());
gimp_unit_menu_signals[GUM_UNIT_CHANGED_SIGNAL] =
gtk_signal_new ("unit_changed",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpUnitMenuClass, gimp_unit_menu),
gtk_signal_default_marshaller, GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (object_class, gimp_unit_menu_signals,
LAST_SIGNAL);
object_class->destroy = gimp_unit_menu_class_destroy;
class->gimp_unit_menu = NULL;
}
static void
gimp_unit_menu_init (GimpUnitMenu *gum)
{
gum->selection = NULL;
gum->clist = NULL;
gum->format = NULL;
gum->unit = UNIT_PIXEL;
gum->show_pixels = FALSE;
gum->show_percent = FALSE;
}
guint
gimp_unit_menu_get_type ()
{
static guint gum_type = 0;
if (!gum_type)
{
GtkTypeInfo gum_info =
{
"GimpUnitMenu",
sizeof (GimpUnitMenu),
sizeof (GimpUnitMenuClass),
(GtkClassInitFunc) gimp_unit_menu_class_init,
(GtkObjectInitFunc) gimp_unit_menu_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
gum_type = gtk_type_unique (gtk_option_menu_get_type (), &gum_info);
}
return gum_type;
}
GtkWidget*
gimp_unit_menu_new (gchar *format,
GUnit unit,
gboolean show_pixels,
gboolean show_percent,
gboolean show_custom)
{
GimpUnitMenu *gum;
GtkWidget *menu;
GtkWidget *menuitem;
GUnit u;
g_return_val_if_fail ((unit >= UNIT_PIXEL) &&
(unit < gimp_unit_get_number_of_units ()) ||
(unit == UNIT_PERCENT), NULL);
if ((unit >= gimp_unit_get_number_of_built_in_units ()) &&
(unit != UNIT_PERCENT))
show_custom = TRUE;
gum = gtk_type_new (gimp_unit_menu_get_type ());
gum->format = g_strdup (format);
gum->show_pixels = show_pixels;
gum->show_percent = show_percent;
menu = gtk_menu_new();
for (u = show_pixels ? UNIT_PIXEL : UNIT_INCH;
u < gimp_unit_get_number_of_built_in_units();
u++)
{
/* special cases "pixels" and "percent" */
if (u == UNIT_INCH)
{
if (show_percent)
{
menuitem =
gtk_menu_item_new_with_label (gimp_unit_menu_build_string (format, UNIT_PERCENT));
gtk_menu_append (GTK_MENU (menu), menuitem);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
(GtkSignalFunc) gimp_unit_menu_callback, gum);
gtk_object_set_data (GTK_OBJECT (menuitem),
"gimp_unit_menu", (gpointer) UNIT_PERCENT);
gtk_widget_show (menuitem);
}
if (show_pixels || show_percent)
{
menuitem = gtk_menu_item_new ();
gtk_menu_append (GTK_MENU (menu), menuitem);
gtk_widget_show (menuitem);
}
}
menuitem =
gtk_menu_item_new_with_label (gimp_unit_menu_build_string (format, u));
gtk_menu_append (GTK_MENU (menu), menuitem);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
(GtkSignalFunc) gimp_unit_menu_callback, gum);
gtk_object_set_data (GTK_OBJECT (menuitem), "gimp_unit_menu", (gpointer)u);
gtk_widget_show (menuitem);
}
if ((unit >= gimp_unit_get_number_of_built_in_units ()) &&
(unit != UNIT_PERCENT))
{
menuitem = gtk_menu_item_new ();
gtk_menu_append (GTK_MENU (menu), menuitem);
gtk_widget_show (menuitem);
menuitem =
gtk_menu_item_new_with_label (gimp_unit_menu_build_string (format, unit));
gtk_menu_append (GTK_MENU (menu), menuitem);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
(GtkSignalFunc) gimp_unit_menu_callback, gum);
gtk_object_set_data (GTK_OBJECT (menuitem), "gimp_unit_menu", (gpointer)unit);
gtk_widget_show(menuitem);
}
if (show_custom)
{
menuitem = gtk_menu_item_new ();
gtk_menu_append (GTK_MENU (menu), menuitem);
gtk_widget_show (menuitem);
menuitem =
gtk_menu_item_new_with_label (_("More..."));
gtk_menu_append (GTK_MENU (menu), menuitem);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
(GtkSignalFunc) gimp_unit_menu_callback, gum);
gtk_object_set_data (GTK_OBJECT (menuitem), "gimp_unit_menu",
(gpointer) (UNIT_PERCENT + 1));
gtk_widget_show(menuitem);
}
gtk_option_menu_set_menu (GTK_OPTION_MENU (gum), menu);
gum->unit = unit;
gtk_option_menu_set_history (GTK_OPTION_MENU (gum),
(unit == UNIT_PIXEL) ? 0 :
((unit == UNIT_PERCENT) ? (show_pixels ? 1 : 0) :
(((show_pixels || show_percent) ? 2 : 0) +
((show_pixels && show_percent) ? 1 : 0) +
((unit < UNIT_END) ? (unit - 1) : UNIT_END))));
return GTK_WIDGET (gum);
}
void
gimp_unit_menu_set_unit (GimpUnitMenu *gum,
GUnit unit)
{
GtkWidget *menuitem = NULL;
GList *items;
gint user_unit;
g_return_if_fail (gum != NULL);
g_return_if_fail (GIMP_IS_UNIT_MENU (gum));
g_return_if_fail (((unit >= UNIT_PIXEL) &&
((unit > UNIT_PIXEL) || gum->show_pixels) &&
(unit < gimp_unit_get_number_of_units ())) ||
((unit == UNIT_PERCENT) && gum->show_percent));
if (unit == gum->unit)
return;
items = GTK_MENU_SHELL (GTK_OPTION_MENU (gum)->menu)->children;
user_unit = UNIT_END + (((gum->show_pixels || gum->show_percent) ? 2 : 0) +
((gum->show_pixels && gum->show_percent) ? 1 : 0));
if ((unit >= UNIT_END) && (unit != UNIT_PERCENT))
{
if ((g_list_length (items) - 3) >= user_unit)
{
gtk_widget_destroy (GTK_WIDGET (g_list_nth_data (items,
user_unit - 1)));
gtk_widget_destroy (GTK_WIDGET (g_list_nth_data (items,
user_unit - 1)));
}
menuitem = gtk_menu_item_new ();
gtk_menu_append (GTK_MENU (GTK_OPTION_MENU (gum)->menu), menuitem);
gtk_menu_reorder_child (GTK_MENU (GTK_OPTION_MENU (gum)->menu),
menuitem, user_unit - 1);
gtk_widget_show(menuitem);
menuitem =
gtk_menu_item_new_with_label (gimp_unit_menu_build_string (gum->format, unit));
gtk_menu_append (GTK_MENU (GTK_OPTION_MENU (gum)->menu), menuitem);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
(GtkSignalFunc) gimp_unit_menu_callback, gum);
gtk_object_set_data (GTK_OBJECT (menuitem), "gimp_unit_menu", (gpointer)unit);
gtk_menu_reorder_child (GTK_MENU (GTK_OPTION_MENU (gum)->menu),
menuitem, user_unit);
gtk_widget_show(menuitem);
}
gum->unit = unit;
gtk_option_menu_set_history (GTK_OPTION_MENU (gum),
(unit == UNIT_PIXEL) ? 0 :
((unit == UNIT_PERCENT) ?
(gum->show_pixels ? 1 : 0) :
(((gum->show_pixels ||
gum->show_percent) ? 2 : 0) +
((gum->show_pixels &&
gum->show_percent) ? 1 : 0) +
((unit < UNIT_END) ? (unit - 1) : UNIT_END))));
}
GUnit
gimp_unit_menu_get_unit (GimpUnitMenu *gum)
{
g_return_val_if_fail (gum != NULL, UNIT_INCH);
g_return_val_if_fail (GIMP_IS_UNIT_MENU (gum), UNIT_INCH);
return gum->unit;
}
/* most of the next two functions is stolen from app/gdisplay.c */
static int
print (char *buf, int len, int start, const char *fmt, ...)
{
va_list args;
int printed;
va_start (args, fmt);
printed = g_vsnprintf (buf + start, len - start, fmt, args);
if (printed < 0)
printed = len - start;
va_end (args);
return printed;
}
static const gchar*
gimp_unit_menu_build_string (gchar *format, GUnit unit)
{
#define BUFFER_LEN 64
static gchar buffer[BUFFER_LEN];
int i = 0;
while (i < (BUFFER_LEN - 1) && *format)
{
switch (*format)
{
case '%':
format++;
switch (*format)
{
case 0:
g_warning (_("unit-menu-format string ended within %%-sequence"));
break;
case '%':
buffer[i++] = '%';
break;
case 'f': /* factor (how many units make up an inch) */
i += print (buffer, BUFFER_LEN, i, "%f",
gimp_unit_get_factor (unit));
break;
case 'y': /* symbol ("''" for inch) */
i += print (buffer, BUFFER_LEN, i, "%s",
gimp_unit_get_symbol (unit));
break;
case 'a': /* abbreviation */
i += print (buffer, BUFFER_LEN, i, "%s",
gimp_unit_get_abbreviation (unit));
break;
case 's': /* singular */
i += print (buffer, BUFFER_LEN, i, "%s",
gimp_unit_get_singular (unit));
break;
case 'p': /* plural */
i += print (buffer, BUFFER_LEN, i, "%s",
gimp_unit_get_plural (unit));
break;
default:
g_warning (_("unit-menu-format contains unknown"
"format sequence '%%%c'"), *format);
break;
}
break;
default:
buffer[i++] = *format;
break;
}
format++;
}
buffer[MIN(i, BUFFER_LEN - 1)] = 0;
return buffer;
}
/* private callbacks of gimp_unit_menu_create_selection ()
*/
static void
gimp_unit_menu_selection_select_callback (GtkWidget *widget,
gpointer data)
{
GimpUnitMenu *gum;
GUnit unit;
gum = GIMP_UNIT_MENU (data);
if (gum->selection && GTK_CLIST (gum->clist)->selection)
{
unit = (GUnit) gtk_clist_get_row_data (GTK_CLIST (gum->clist),
(int) (GTK_CLIST (gum->clist)->selection->data));
gimp_unit_menu_set_unit (gum, unit);
gtk_signal_emit (GTK_OBJECT (gum),
gimp_unit_menu_signals[GUM_UNIT_CHANGED_SIGNAL]);
gtk_widget_destroy (gum->selection);
gum->selection = NULL;
gum->clist = NULL;
}
}
static void
gimp_unit_menu_selection_close_callback (GtkWidget *widget,
gpointer data)
{
GimpUnitMenu *gum;
gum = GIMP_UNIT_MENU (data);
if (gum->selection)
{
gtk_widget_destroy (gum->selection);
gum->selection = NULL;
gum->clist = NULL;
}
}
static gint
gimp_unit_menu_selection_delete_callback (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
gimp_unit_menu_selection_close_callback (NULL, data);
return TRUE;
}
/* private function of gimp_unit_menu_callback ()
*/
static void
gimp_unit_menu_create_selection (GimpUnitMenu *gum)
{
GtkWidget *hbox;
GtkWidget *hbbox;
GtkWidget *vbox;
GtkWidget *scrolled_win;
GtkWidget *button;
gchar *row[2];
GUnit unit;
gint num_units;
gum->selection = gtk_dialog_new ();
gtk_window_set_wmclass (GTK_WINDOW (gum->selection),
"unit_selection", "Gimp");
gtk_window_set_title (GTK_WINDOW (gum->selection), _("Unit Selection"));
gtk_window_set_policy (GTK_WINDOW (gum->selection), FALSE, TRUE, FALSE);
gtk_window_position (GTK_WINDOW (gum->selection), GTK_WIN_POS_MOUSE);
vbox = gtk_vbox_new (FALSE, 2);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (gum->selection)->vbox), vbox);
gtk_container_border_width (GTK_CONTAINER (vbox), 2);
gtk_widget_show (vbox);
gtk_signal_connect (GTK_OBJECT (gum->selection), "delete_event",
GTK_SIGNAL_FUNC (gimp_unit_menu_selection_delete_callback),
gum);
gtk_signal_connect (GTK_OBJECT (gum), "destroy",
GTK_SIGNAL_FUNC (gimp_unit_menu_selection_close_callback),
gum);
gtk_signal_connect (GTK_OBJECT (gum), "unmap",
GTK_SIGNAL_FUNC (gimp_unit_menu_selection_close_callback),
gum);
/* build the selection list */
scrolled_win = gtk_scrolled_window_new (NULL, NULL);
gum->clist = gtk_clist_new (2);
gtk_clist_set_shadow_type (GTK_CLIST (gum->clist), GTK_SHADOW_IN);
gtk_clist_set_selection_mode (GTK_CLIST (gum->clist), GTK_SELECTION_BROWSE);
gtk_widget_set_usize (gum->clist, 200, 150);
gtk_clist_set_column_title (GTK_CLIST (gum->clist), 0, _("Unit "));
gtk_clist_set_column_auto_resize (GTK_CLIST (gum->clist), 0, TRUE);
gtk_clist_set_column_title (GTK_CLIST (gum->clist), 1, _("Factor"));
gtk_clist_set_column_auto_resize (GTK_CLIST (gum->clist), 1, TRUE);
gtk_clist_column_titles_show (GTK_CLIST (gum->clist));
hbox = gtk_hbox_new (FALSE, 8);
gtk_container_border_width (GTK_CONTAINER (hbox), 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0);
gtk_widget_show (hbox);
gtk_box_pack_start (GTK_BOX (hbox), scrolled_win, TRUE, TRUE, 0);
gtk_container_add (GTK_CONTAINER (scrolled_win), gum->clist);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_ALWAYS);
gtk_widget_show(scrolled_win);
gtk_widget_show(gum->clist);
/* build the action area */
gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG (gum->selection)->action_area), 2);
gtk_box_set_homogeneous (GTK_BOX (GTK_DIALOG (gum->selection)->action_area),
FALSE);
hbbox = gtk_hbutton_box_new ();
gtk_button_box_set_spacing (GTK_BUTTON_BOX (hbbox), 4);
gtk_box_pack_end(GTK_BOX (GTK_DIALOG (gum->selection)->action_area), hbbox,
FALSE, FALSE, 0);
gtk_widget_show (hbbox);
button = gtk_button_new_with_label (_("Select"));
gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) gimp_unit_menu_selection_select_callback,
gum);
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_widget_show (button);
button = gtk_button_new_with_label (_("Close"));
gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) gimp_unit_menu_selection_close_callback,
gum);
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_widget_grab_default (button);
gtk_widget_show (button);
/* insert the unit lines */
num_units = gimp_unit_get_number_of_units ();
for (unit = UNIT_END; unit < num_units; unit++)
{
row[0] = g_strdup (gimp_unit_menu_build_string (gum->format, unit));
row[1] = g_strdup (gimp_unit_menu_build_string ("(%f)", unit));
gtk_clist_append (GTK_CLIST (gum->clist), row);
gtk_clist_set_row_data (GTK_CLIST (gum->clist),
unit - UNIT_END, (gpointer)unit);
g_free (row[0]);
g_free (row[1]);
}
/* now show the dialog */
gtk_widget_show(vbox);
gtk_widget_show(gum->selection);
if(gum->unit >= UNIT_END)
{
gtk_clist_select_row (GTK_CLIST (gum->clist), gum->unit - UNIT_END, 0);
gtk_clist_moveto (GTK_CLIST (gum->clist), gum->unit - UNIT_END,
0, 0.0, 0.0);
}
}
static void
gimp_unit_menu_callback (GtkWidget *widget,
gpointer data)
{
GimpUnitMenu *gum;
GUnit new_unit;
gum = data;
new_unit = (guint) gtk_object_get_data (GTK_OBJECT (widget),
"gimp_unit_menu");
if (gum->unit == new_unit)
return;
/* was "More..." selected? */
if (new_unit == (UNIT_PERCENT + 1))
{
gtk_option_menu_set_history (GTK_OPTION_MENU (gum),
(gum->unit == UNIT_PIXEL) ? 0 :
((gum->unit == UNIT_PERCENT) ?
(gum->show_pixels ? 1 : 0) :
((gum->show_pixels ||
gum->show_percent ? 2 : 0) +
(gum->show_pixels &&
gum->show_percent ? 1 : 0) +
((gum->unit < UNIT_END) ?
gum->unit - 1 : UNIT_END))));
if (! gum->selection)
gimp_unit_menu_create_selection (gum);
return;
}
else if (gum->selection)
{
gtk_widget_destroy (gum->selection);
gum->selection = NULL;
}
gimp_unit_menu_set_unit (gum, new_unit);
gtk_signal_emit (GTK_OBJECT (gum),
gimp_unit_menu_signals[GUM_UNIT_CHANGED_SIGNAL]);
}
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