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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 <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 <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "gimpwidgetstypes.h"
#include "gimpdialog.h"
#include "gimphelpui.h"
#include "gimpunitmenu.h"
#include "libgimp/libgimp-intl.h"
enum
{
UNIT_CHANGED,
LAST_SIGNAL
};
static void gimp_unit_menu_class_init (GimpUnitMenuClass *klass);
static void gimp_unit_menu_init (GimpUnitMenu *gum);
static void gimp_unit_menu_destroy (GtkObject *object);
static const gchar * gimp_unit_menu_build_string (const gchar *format,
GimpUnit unit);
static void gimp_unit_menu_callback (GtkWidget *widget,
gpointer data);
static guint gimp_unit_menu_signals[LAST_SIGNAL] = { 0 };
static GtkOptionMenuClass *parent_class = NULL;
GType
gimp_unit_menu_get_type (void)
{
static GType 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;
}
static void
gimp_unit_menu_class_init (GimpUnitMenuClass *klass)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gimp_unit_menu_signals[UNIT_CHANGED] =
g_signal_new ("unit_changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpUnitMenuClass, unit_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
object_class->destroy = gimp_unit_menu_destroy;
klass->unit_changed = NULL;
}
static void
gimp_unit_menu_init (GimpUnitMenu *gum)
{
gum->format = NULL;
gum->unit = GIMP_UNIT_PIXEL;
gum->show_pixels = FALSE;
gum->show_percent = FALSE;
gum->selection = NULL;
gum->clist = NULL;
}
static void
gimp_unit_menu_destroy (GtkObject *object)
{
GimpUnitMenu *gum;
g_return_if_fail (GIMP_IS_UNIT_MENU (object));
gum = GIMP_UNIT_MENU (object);
if (gum->format)
{
g_free (gum->format);
gum->format = NULL;
}
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
/**
* gimp_unit_menu_new:
* @format: A printf-like format string which is used to create the unit
* strings.
* @unit: The initially selected unit.
* @show_pixels: #TRUE if the unit menu should contain an item for
* GIMP_UNIT_PIXEL.
* @show_percent: #TRUE in the unit menu should contain an item for
* GIMP_UNIT_PERCENT.
* @show_custom: #TRUE if the unit menu should contain a "More..." item for
* opening the user-defined-unit selection dialog.
*
* Creates a new #GimpUnitMenu widget.
*
* The @format string supports the following percent expansions:
*
* Returns: A pointer to the new #GimpUnitMenu widget.
*
*/
GtkWidget *
gimp_unit_menu_new (const gchar *format,
GimpUnit unit,
gboolean show_pixels,
gboolean show_percent,
gboolean show_custom)
{
GimpUnitMenu *gum;
GtkWidget *menu;
GtkWidget *menuitem;
GimpUnit u;
g_return_val_if_fail ((unit >= GIMP_UNIT_PIXEL) &&
(unit < gimp_unit_get_number_of_units ()) ||
(unit == GIMP_UNIT_PERCENT), NULL);
if ((unit >= gimp_unit_get_number_of_built_in_units ()) &&
(unit != GIMP_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 ? GIMP_UNIT_PIXEL : GIMP_UNIT_INCH;
u < gimp_unit_get_number_of_built_in_units ();
u++)
{
/* special cases "pixels" and "percent" */
if (u == GIMP_UNIT_INCH)
{
if (show_percent)
{
menuitem =
gtk_menu_item_new_with_label
(gimp_unit_menu_build_string (format, GIMP_UNIT_PERCENT));
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
GTK_SIGNAL_FUNC (gimp_unit_menu_callback),
gum);
gtk_object_set_data (GTK_OBJECT (menuitem), "gimp_unit_menu",
(gpointer) GIMP_UNIT_PERCENT);
gtk_widget_show (menuitem);
}
if (show_pixels || show_percent)
{
menuitem = gtk_menu_item_new ();
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
gtk_widget_set_sensitive (menuitem, FALSE);
gtk_widget_show (menuitem);
}
}
menuitem =
gtk_menu_item_new_with_label (gimp_unit_menu_build_string (format, u));
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
GTK_SIGNAL_FUNC (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 != GIMP_UNIT_PERCENT))
{
menuitem = gtk_menu_item_new ();
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
gtk_widget_set_sensitive (menuitem, FALSE);
gtk_widget_show (menuitem);
menuitem =
gtk_menu_item_new_with_label (gimp_unit_menu_build_string (format, unit));
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
GTK_SIGNAL_FUNC (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_shell_append (GTK_MENU_SHELL (menu), menuitem);
gtk_widget_set_sensitive (menuitem, FALSE);
gtk_widget_show (menuitem);
menuitem =
gtk_menu_item_new_with_label (_("More..."));
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
GTK_SIGNAL_FUNC (gimp_unit_menu_callback),
gum);
gtk_object_set_data (GTK_OBJECT (menuitem), "gimp_unit_menu",
(gpointer) (GIMP_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 == GIMP_UNIT_PIXEL) ? 0 :
((unit == GIMP_UNIT_PERCENT) ?
(show_pixels ? 1 : 0) :
(((show_pixels || show_percent) ? 2 : 0) +
((show_pixels && show_percent) ? 1 : 0) +
((unit < GIMP_UNIT_END) ?
(unit - 1) : GIMP_UNIT_END))));
return GTK_WIDGET (gum);
}
/**
* gimp_unit_menu_set_unit:
* @gum: The unit menu you want to set the unit for.
* @unit: The new unit.
*
* Sets a new #GimpUnit for the specified #GimpUnitMenu.
*
*/
void
gimp_unit_menu_set_unit (GimpUnitMenu *gum,
GimpUnit 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 >= GIMP_UNIT_PIXEL) &&
((unit > GIMP_UNIT_PIXEL) || gum->show_pixels) &&
(unit < gimp_unit_get_number_of_units ())) ||
((unit == GIMP_UNIT_PERCENT) && gum->show_percent));
if (unit == gum->unit)
return;
items = GTK_MENU_SHELL (GTK_OPTION_MENU (gum)->menu)->children;
user_unit = (GIMP_UNIT_END +
(((gum->show_pixels || gum->show_percent) ? 2 : 0) +
((gum->show_pixels && gum->show_percent) ? 1 : 0)));
if ((unit >= GIMP_UNIT_END) && (unit != GIMP_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_shell_append (GTK_MENU_SHELL (GTK_OPTION_MENU (gum)->menu), menuitem);
gtk_widget_set_sensitive (menuitem, FALSE);
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_shell_append (GTK_MENU_SHELL (GTK_OPTION_MENU (gum)->menu),
menuitem);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
GTK_SIGNAL_FUNC (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 == GIMP_UNIT_PIXEL) ? 0 :
((unit == GIMP_UNIT_PERCENT) ?
(gum->show_pixels ? 1 : 0) :
(((gum->show_pixels ||
gum->show_percent) ? 2 : 0) +
((gum->show_pixels &&
gum->show_percent) ? 1 : 0) +
((unit < GIMP_UNIT_END) ?
(unit - 1) : GIMP_UNIT_END))));
}
/**
* gimp_unit_menu_get_unit:
* @gum: The unit menu you want to know the unit of.
*
* Returns the #GimpUnit the user has selected from the #GimpUnitMenu.
*
* Returns: The unit the user has selected.
*
*/
GimpUnit
gimp_unit_menu_get_unit (GimpUnitMenu *gum)
{
g_return_val_if_fail (gum != NULL, GIMP_UNIT_INCH);
g_return_val_if_fail (GIMP_IS_UNIT_MENU (gum), GIMP_UNIT_INCH);
return gum->unit;
}
/* most of the next two functions is stolen from app/gdisplay.c */
static gint
print (gchar *buf,
gint len,
gint start,
const gchar *fmt,
...)
{
va_list args;
gint 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 (const gchar *format,
GimpUnit unit)
{
static gchar buffer[64];
gint i = 0;
while (i < (sizeof (buffer) - 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, sizeof (buffer), i, "%f",
gimp_unit_get_factor (unit));
break;
case 'y': /* symbol ("''" for inch) */
i += print (buffer, sizeof (buffer), i, "%s",
gimp_unit_get_symbol (unit));
break;
case 'a': /* abbreviation */
i += print (buffer, sizeof (buffer), i, "%s",
gimp_unit_get_abbreviation (unit));
break;
case 's': /* singular */
i += print (buffer, sizeof (buffer), i, "%s",
gimp_unit_get_singular (unit));
break;
case 'p': /* plural */
i += print (buffer, sizeof (buffer), i, "%s",
gimp_unit_get_plural (unit));
break;
default:
g_warning ("gimp_unit_menu_build_string(): "
"unit-menu-format contains unknown format sequence "
"'%%%c'", *format);
break;
}
break;
default:
buffer[i++] = *format;
break;
}
format++;
}
buffer[MIN (i, sizeof (buffer) - 1)] = 0;
return buffer;
}
/* private callback of gimp_unit_menu_create_selection () */
static void
gimp_unit_menu_selection_ok_callback (GtkWidget *widget,
gpointer data)
{
GimpUnitMenu *gum;
GimpUnit unit;
gum = GIMP_UNIT_MENU (data);
if (gum->selection && GTK_CLIST (gum->clist)->selection)
{
unit = (GimpUnit)
gtk_clist_get_row_data (GTK_CLIST (gum->clist),
(gint) (GTK_CLIST (gum->clist)->selection->data));
gimp_unit_menu_set_unit (gum, unit);
gtk_signal_emit (GTK_OBJECT (gum),
gimp_unit_menu_signals[UNIT_CHANGED]);
gtk_widget_destroy (gum->selection);
}
}
static void
gimp_unit_menu_selection_select_row_callback (GtkWidget *widget,
gint row,
gint column,
GdkEventButton *bevent,
gpointer data)
{
if (bevent && bevent->type == GDK_2BUTTON_PRESS)
gimp_unit_menu_selection_ok_callback (NULL, data);
}
/* private function of gimp_unit_menu_callback () */
static void
gimp_unit_menu_create_selection (GimpUnitMenu *gum)
{
GtkWidget *vbox;
GtkWidget *scrolled_win;
gchar *titles[2];
gchar *row[2];
GimpUnit unit;
gint num_units;
gint unit_width;
gint factor_width;
gum->selection =
gimp_dialog_new (_("Unit Selection"), "unit_selection",
gimp_standard_help_func, "dialogs/unit_selection.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), gimp_unit_menu_selection_ok_callback,
gum, NULL, NULL, TRUE, FALSE,
_("Cancel"), gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
NULL);
gtk_signal_connect (GTK_OBJECT (gum->selection), "destroy",
GTK_SIGNAL_FUNC (gtk_widget_destroyed),
&gum->selection);
gtk_signal_connect_object_while_alive (GTK_OBJECT (gum), "destroy",
GTK_SIGNAL_FUNC (gtk_widget_destroy),
GTK_OBJECT (gum->selection));
gtk_signal_connect_object_while_alive (GTK_OBJECT (gum), "unmap",
GTK_SIGNAL_FUNC (gtk_widget_destroy),
GTK_OBJECT (gum->selection));
/* the main vbox */
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (gum->selection)->vbox), vbox);
gtk_widget_show (vbox);
/* the selection list */
scrolled_win = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
GTK_POLICY_NEVER,
GTK_POLICY_ALWAYS);
gtk_container_add (GTK_CONTAINER (vbox), scrolled_win);
gtk_widget_show (scrolled_win);
titles[0] = _("Unit");
titles[1] = _("Factor");
gum->clist = gtk_clist_new_with_titles (2, titles);
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_clist_column_titles_passive (GTK_CLIST (gum->clist));
/* the unit lines */
num_units = gimp_unit_get_number_of_units ();
for (unit = GIMP_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 - GIMP_UNIT_END,
(gpointer) unit);
g_free (row[0]);
g_free (row[1]);
}
unit_width = gtk_clist_optimal_column_width (GTK_CLIST (gum->clist), 0);
factor_width = gtk_clist_optimal_column_width (GTK_CLIST (gum->clist), 1);
gtk_clist_set_column_width (GTK_CLIST (gum->clist), 0, unit_width);
gtk_clist_set_column_width (GTK_CLIST (gum->clist), 1, factor_width);
gtk_widget_set_usize (gum->clist, -1, 150);
gtk_container_add (GTK_CONTAINER (scrolled_win), gum->clist);
gtk_signal_connect (GTK_OBJECT (gum->clist), "select_row",
GTK_SIGNAL_FUNC (gimp_unit_menu_selection_select_row_callback),
gum);
gtk_widget_show (gum->clist);
gtk_signal_connect (GTK_OBJECT (gum->clist), "destroy",
GTK_SIGNAL_FUNC (gtk_widget_destroyed),
&gum->clist);
gtk_widget_show (vbox);
gtk_widget_show (gum->selection);
if (gum->unit >= GIMP_UNIT_END)
{
gtk_clist_select_row (GTK_CLIST (gum->clist),
gum->unit - GIMP_UNIT_END, 0);
gtk_clist_moveto (GTK_CLIST (gum->clist),
gum->unit - GIMP_UNIT_END, 0, 0.0, 0.0);
}
}
static void
gimp_unit_menu_callback (GtkWidget *widget,
gpointer data)
{
GimpUnitMenu *gum;
GimpUnit 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 == (GIMP_UNIT_PERCENT + 1))
{
gtk_option_menu_set_history (GTK_OPTION_MENU (gum),
(gum->unit == GIMP_UNIT_PIXEL) ? 0 :
((gum->unit == GIMP_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 < GIMP_UNIT_END) ?
gum->unit - 1 : GIMP_UNIT_END))));
if (! gum->selection)
gimp_unit_menu_create_selection (gum);
return;
}
else if (gum->selection)
{
gtk_widget_destroy (gum->selection);
}
gimp_unit_menu_set_unit (gum, new_unit);
gtk_signal_emit (GTK_OBJECT (gum),
gimp_unit_menu_signals[UNIT_CHANGED]);
}
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