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gimp/app/widgets/gimpcellrendereraccel.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcellrendereraccel.c
* Copyright (C) 2004 Michael Natterer <mitch@gimp.org>
*
* Derived from: libegg/libegg/treeviewutils/eggcellrendererkeys.c
* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; 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 <gdk/gdkkeysyms.h>
#include <gdk/gdkkeysyms.h>
#include "widgets-types.h"
#include "core/gimpmarshal.h"
#include "gimpcellrendereraccel.h"
#include "gimpwidgets-utils.h"
#include "gimp-intl.h"
enum
{
ACCEL_EDITED,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_ACCEL_KEY,
PROP_ACCEL_MASK
};
#define GIMP_CELL_RENDERER_ACCEL_PATH "gimp-cell-renderer-accel-path"
static void gimp_cell_renderer_accel_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_cell_renderer_accel_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static void gimp_cell_renderer_accel_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
GdkRectangle *cell_area,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height);
static GtkCellEditable *
gimp_cell_renderer_accel_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GtkCellRendererState flags);
G_DEFINE_TYPE (GimpCellRendererAccel, gimp_cell_renderer_accel,
GTK_TYPE_CELL_RENDERER_TEXT)
#define parent_class gimp_cell_renderer_accel_parent_class
static guint accel_cell_signals[LAST_SIGNAL] = { 0 };
static void
gimp_cell_renderer_accel_class_init (GimpCellRendererAccelClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (klass);
accel_cell_signals[ACCEL_EDITED] =
g_signal_new ("accel-edited",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GimpCellRendererAccelClass, accel_edited),
NULL, NULL,
gimp_marshal_VOID__STRING_BOOLEAN_UINT_FLAGS,
G_TYPE_NONE, 4,
G_TYPE_STRING,
G_TYPE_BOOLEAN,
G_TYPE_UINT,
GDK_TYPE_MODIFIER_TYPE);
object_class->set_property = gimp_cell_renderer_accel_set_property;
object_class->get_property = gimp_cell_renderer_accel_get_property;
cell_class->get_size = gimp_cell_renderer_accel_get_size;
cell_class->start_editing = gimp_cell_renderer_accel_start_editing;
g_object_class_install_property (object_class, PROP_ACCEL_KEY,
g_param_spec_uint ("accel-key", NULL, NULL,
0, G_MAXINT, 0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_ACCEL_MASK,
g_param_spec_flags ("accel-mask", NULL, NULL,
GDK_TYPE_MODIFIER_TYPE,
0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
}
static void
gimp_cell_renderer_accel_init (GimpCellRendererAccel *cell)
{
}
static void
gimp_cell_renderer_accel_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
{
GimpCellRendererAccel *accel = GIMP_CELL_RENDERER_ACCEL (object);
switch (param_id)
{
case PROP_ACCEL_KEY:
gimp_cell_renderer_accel_set_accelerator (accel,
g_value_get_uint (value),
accel->accel_mask);
break;
case PROP_ACCEL_MASK:
gimp_cell_renderer_accel_set_accelerator (accel,
accel->accel_key,
g_value_get_flags (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
}
}
static void
gimp_cell_renderer_accel_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GimpCellRendererAccel *accel = GIMP_CELL_RENDERER_ACCEL (object);
switch (param_id)
{
case PROP_ACCEL_KEY:
g_value_set_uint (value, accel->accel_key);
break;
case PROP_ACCEL_MASK:
g_value_set_flags (value, accel->accel_mask);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
}
}
static void
gimp_cell_renderer_accel_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
GdkRectangle *cell_area,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height)
{
GimpCellRendererAccel *accel = GIMP_CELL_RENDERER_ACCEL (cell);
GtkRequisition requisition;
if (! accel->sizing_label)
accel->sizing_label = gtk_label_new (_("Type a new accelerator, "
"or press Backspace to clear"));
gtk_widget_size_request (accel->sizing_label, &requisition);
GTK_CELL_RENDERER_CLASS (parent_class)->get_size (cell, widget, cell_area,
x_offset, y_offset,
width, height);
/* FIXME: need to take the cell_area et al. into account */
if (width)
*width = MAX (*width, requisition.width);
if (height)
*height = MAX (*height, requisition.height);
}
/* FIXME: Currently we don't differentiate between a 'bogus' key (like tab in
* GTK mode) and a removed key.
*/
static gboolean
grab_key_callback (GtkWidget *widget,
GdkEventKey *event,
GimpCellRendererAccel *accel)
{
GdkDisplay *display;
guint accel_key;
GdkModifierType accel_mods;
gchar *path;
gboolean delete = FALSE;
gboolean edited = FALSE;
GdkModifierType consumed_modifiers;
switch (event->keyval)
{
case GDK_Shift_L:
case GDK_Shift_R:
case GDK_Control_L:
case GDK_Control_R:
case GDK_Alt_L:
case GDK_Alt_R:
return TRUE;
case GDK_Delete:
case GDK_KP_Delete:
case GDK_BackSpace:
delete = TRUE;
break;
default:
break;
}
display = gtk_widget_get_display (widget);
gdk_keymap_translate_keyboard_state (gdk_keymap_get_for_display (display),
event->hardware_keycode,
event->state,
event->group,
NULL, NULL, NULL, &consumed_modifiers);
accel_key = gdk_keyval_to_lower (event->keyval);
accel_mods = (event->state &
gtk_accelerator_get_default_mod_mask () &
~consumed_modifiers);
if (accel_key == GDK_ISO_Left_Tab)
accel_key = GDK_Tab;
/* If lowercasing affects the keysym, then we need to include SHIFT
* in the modifiers, We re-upper case when we match against the
* keyval, but display and save in caseless form.
*/
if (accel_key != event->keyval)
accel_mods |= GDK_SHIFT_MASK;
if (accel_key != GDK_Escape)
{
if (delete || ! gtk_accelerator_valid (accel_key, accel_mods))
{
accel_key = 0;
accel_mods = 0;
}
edited = TRUE;
}
path = g_strdup (g_object_get_data (G_OBJECT (accel->edit_widget),
GIMP_CELL_RENDERER_ACCEL_PATH));
gdk_display_keyboard_ungrab (display, event->time);
gdk_display_pointer_ungrab (display, event->time);
gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (accel->edit_widget));
gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (accel->edit_widget));
accel->edit_widget = NULL;
accel->grab_widget = NULL;
if (edited)
g_signal_emit (accel, accel_cell_signals[ACCEL_EDITED], 0,
path, delete, accel_key, accel_mods);
g_free (path);
return TRUE;
}
static void
ungrab_stuff (GtkWidget *widget,
GimpCellRendererAccel *accel)
{
GdkDisplay *display = gtk_widget_get_display (widget);
gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
g_signal_handlers_disconnect_by_func (accel->grab_widget,
G_CALLBACK (grab_key_callback),
accel);
}
static void
pointless_eventbox_start_editing (GtkCellEditable *cell_editable,
GdkEvent *event)
{
/* do nothing, because we are pointless */
}
static void
pointless_eventbox_cell_editable_init (GtkCellEditableIface *iface)
{
iface->start_editing = pointless_eventbox_start_editing;
}
static GType
pointless_eventbox_subclass_get_type (void)
{
static GType type = 0;
if (! type)
{
const GTypeInfo info =
{
sizeof (GtkEventBoxClass),
NULL, /* base_init */
NULL, /* base_finalize */
NULL, /* class_init */
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkEventBox),
0, /* n_preallocs */
NULL /* instance init */
};
const GInterfaceInfo editable_info =
{
(GInterfaceInitFunc) pointless_eventbox_cell_editable_init,
NULL, NULL
};
type = g_type_register_static (GTK_TYPE_EVENT_BOX,
"GimpCellEditableEventBox",
&info, 0);
g_type_add_interface_static (type, GTK_TYPE_CELL_EDITABLE,
&editable_info);
}
return type;
}
static GtkCellEditable *
gimp_cell_renderer_accel_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererText *celltext = GTK_CELL_RENDERER_TEXT (cell);
GimpCellRendererAccel *accel = GIMP_CELL_RENDERER_ACCEL (cell);
GtkWidget *label;
GtkWidget *eventbox;
if (! celltext->editable)
return NULL;
g_return_val_if_fail (widget->window != NULL, NULL);
if (gdk_keyboard_grab (widget->window, FALSE,
gdk_event_get_time (event)) != GDK_GRAB_SUCCESS)
return NULL;
if (gdk_pointer_grab (widget->window, FALSE,
GDK_BUTTON_PRESS_MASK,
NULL, NULL,
gdk_event_get_time (event)) != GDK_GRAB_SUCCESS)
{
gdk_display_keyboard_ungrab (gtk_widget_get_display (widget),
gdk_event_get_time (event));
return NULL;
}
accel->grab_widget = widget;
g_signal_connect (widget, "key-press-event",
G_CALLBACK (grab_key_callback),
accel);
eventbox = g_object_new (pointless_eventbox_subclass_get_type (), NULL);
accel->edit_widget = eventbox;
g_object_add_weak_pointer (G_OBJECT (accel->edit_widget),
(gpointer) &accel->edit_widget);
label = gtk_label_new (NULL);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_widget_modify_bg (eventbox, GTK_STATE_NORMAL,
&widget->style->bg[GTK_STATE_SELECTED]);
gtk_widget_modify_fg (label, GTK_STATE_NORMAL,
&widget->style->fg[GTK_STATE_SELECTED]);
if (accel->accel_key != 0)
gtk_label_set_text (GTK_LABEL (label),
_("Type a new accelerator, or press Backspace to clear"));
else
gtk_label_set_text (GTK_LABEL (label),
_("Type a new accelerator"));
gtk_container_add (GTK_CONTAINER (eventbox), label);
g_object_set_data_full (G_OBJECT (accel->edit_widget),
GIMP_CELL_RENDERER_ACCEL_PATH,
g_strdup (path), g_free);
gtk_widget_show_all (accel->edit_widget);
g_signal_connect (accel->edit_widget, "unrealize",
G_CALLBACK (ungrab_stuff),
accel);
accel->edit_key = accel->accel_key;
return GTK_CELL_EDITABLE (accel->edit_widget);
}
/* public functions */
GtkCellRenderer *
gimp_cell_renderer_accel_new (void)
{
return g_object_new (GIMP_TYPE_CELL_RENDERER_ACCEL, NULL);
}
void
gimp_cell_renderer_accel_set_accelerator (GimpCellRendererAccel *accel,
guint accel_key,
GdkModifierType accel_mask)
{
gboolean changed = FALSE;
g_return_if_fail (GIMP_IS_CELL_RENDERER_ACCEL (accel));
g_object_freeze_notify (G_OBJECT (accel));
if (accel_key != accel->accel_key)
{
accel->accel_key = accel_key;
g_object_notify (G_OBJECT (accel), "accel-key");
changed = TRUE;
}
if (accel_mask != accel->accel_mask)
{
accel->accel_mask = accel_mask;
g_object_notify (G_OBJECT (accel), "accel-mask");
changed = TRUE;
}
g_object_thaw_notify (G_OBJECT (accel));
if (changed)
{
gchar *text = gimp_get_accel_string (accel->accel_key,
accel->accel_mask);
g_object_set (accel, "text", text, NULL);
g_free (text);
}
}
void
gimp_cell_renderer_accel_get_accelerator (GimpCellRendererAccel *accel,
guint *accel_key,
GdkModifierType *accel_mask)
{
g_return_if_fail (GIMP_IS_CELL_RENDERER_ACCEL (accel));
if (accel_key)
*accel_key = accel->accel_key;
if (accel_mask)
*accel_mask = accel->accel_mask;
}
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