gtk2/gtk/gtkcellrendereraccel.c

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/* gtkcellrendereraccel.h
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* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
*
* 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
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
#include "config.h"
#include "gtkcellrendereraccel.h"
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#include "gtkintl.h"
#include "gtkaccelgroup.h"
#include "gtkmarshalers.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtksizerequest.h"
#include "gtktypebuiltins.h"
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#include "gtkprivate.h"
/**
* SECTION:gtkcellrendereraccel
* @Short_description: Renders a keyboard accelerator in a cell
* @Title: GtkCellRendererAccel
*
* #GtkCellRendererAccel displays a keyboard accelerator (i.e. a key
* combination like `Control + a`). If the cell renderer is editable,
* the accelerator can be changed by simply typing the new combination.
*
* The #GtkCellRendererAccel cell renderer was added in GTK+ 2.10.
*/
static void gtk_cell_renderer_accel_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static void gtk_cell_renderer_accel_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_cell_renderer_accel_get_preferred_width
(GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size);
static GtkCellEditable *
gtk_cell_renderer_accel_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags);
static gchar *convert_keysym_state_to_string (GtkCellRendererAccel *accel,
guint keysym,
GdkModifierType mask,
guint keycode);
static GtkWidget *gtk_cell_editable_widget_new (GtkCellRenderer *cell,
GtkCellRendererAccelMode mode,
const gchar *path);
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enum {
ACCEL_EDITED,
ACCEL_CLEARED,
LAST_SIGNAL
};
enum {
PROP_ACCEL_KEY = 1,
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PROP_ACCEL_MODS,
PROP_KEYCODE,
PROP_ACCEL_MODE
};
static guint signals[LAST_SIGNAL] = { 0 };
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struct _GtkCellRendererAccelPrivate
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{
GtkWidget *sizing_label;
GtkCellRendererAccelMode accel_mode;
GdkModifierType accel_mods;
guint accel_key;
guint keycode;
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GdkDevice *grab_pointer;
};
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G_DEFINE_TYPE_WITH_PRIVATE (GtkCellRendererAccel, gtk_cell_renderer_accel, GTK_TYPE_CELL_RENDERER_TEXT)
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static void
gtk_cell_renderer_accel_init (GtkCellRendererAccel *cell_accel)
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{
gchar *text;
cell_accel->priv = gtk_cell_renderer_accel_get_instance_private (cell_accel);
text = convert_keysym_state_to_string (cell_accel, 0, 0, 0);
g_object_set (cell_accel, "text", text, NULL);
g_free (text);
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}
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static void
gtk_cell_renderer_accel_dispose (GObject *object)
{
GtkCellRendererAccelPrivate *priv = GTK_CELL_RENDERER_ACCEL (object)->priv;
g_clear_object (&priv->sizing_label);
G_OBJECT_CLASS (gtk_cell_renderer_accel_parent_class)->dispose (object);
}
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static void
gtk_cell_renderer_accel_class_init (GtkCellRendererAccelClass *cell_accel_class)
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{
GObjectClass *object_class;
GtkCellRendererClass *cell_renderer_class;
object_class = G_OBJECT_CLASS (cell_accel_class);
cell_renderer_class = GTK_CELL_RENDERER_CLASS (cell_accel_class);
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object_class->set_property = gtk_cell_renderer_accel_set_property;
object_class->get_property = gtk_cell_renderer_accel_get_property;
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object_class->dispose = gtk_cell_renderer_accel_dispose;
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cell_renderer_class->get_preferred_width = gtk_cell_renderer_accel_get_preferred_width;
cell_renderer_class->start_editing = gtk_cell_renderer_accel_start_editing;
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/**
* GtkCellRendererAccel:accel-key:
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*
* The keyval of the accelerator.
*/
g_object_class_install_property (object_class,
PROP_ACCEL_KEY,
g_param_spec_uint ("accel-key",
P_("Accelerator key"),
P_("The keyval of the accelerator"),
0,
G_MAXINT,
0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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/**
* GtkCellRendererAccel:accel-mods:
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*
* The modifier mask of the accelerator.
*/
g_object_class_install_property (object_class,
PROP_ACCEL_MODS,
g_param_spec_flags ("accel-mods",
P_("Accelerator modifiers"),
P_("The modifier mask of the accelerator"),
GDK_TYPE_MODIFIER_TYPE,
0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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/**
* GtkCellRendererAccel:keycode:
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*
* The hardware keycode of the accelerator. Note that the hardware keycode is
* only relevant if the key does not have a keyval. Normally, the keyboard
* configuration should assign keyvals to all keys.
*/
g_object_class_install_property (object_class,
PROP_KEYCODE,
g_param_spec_uint ("keycode",
P_("Accelerator keycode"),
P_("The hardware keycode of the accelerator"),
0,
G_MAXINT,
0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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/**
* GtkCellRendererAccel:accel-mode:
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*
* Determines if the edited accelerators are GTK+ accelerators. If
* they are, consumed modifiers are suppressed, only accelerators
* accepted by GTK+ are allowed, and the accelerators are rendered
* in the same way as they are in menus.
*/
g_object_class_install_property (object_class,
PROP_ACCEL_MODE,
g_param_spec_enum ("accel-mode",
P_("Accelerator Mode"),
P_("The type of accelerators"),
GTK_TYPE_CELL_RENDERER_ACCEL_MODE,
GTK_CELL_RENDERER_ACCEL_MODE_GTK,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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/**
* GtkCellRendererAccel::accel-edited:
* @accel: the object reveiving the signal
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* @path_string: the path identifying the row of the edited cell
* @accel_key: the new accelerator keyval
* @accel_mods: the new acclerator modifier mask
* @hardware_keycode: the keycode of the new accelerator
*
* Gets emitted when the user has selected a new accelerator.
*/
signals[ACCEL_EDITED] = g_signal_new (I_("accel-edited"),
GTK_TYPE_CELL_RENDERER_ACCEL,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkCellRendererAccelClass, accel_edited),
NULL, NULL,
_gtk_marshal_VOID__STRING_UINT_FLAGS_UINT,
G_TYPE_NONE, 4,
G_TYPE_STRING,
G_TYPE_UINT,
GDK_TYPE_MODIFIER_TYPE,
G_TYPE_UINT);
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/**
* GtkCellRendererAccel::accel-cleared:
* @accel: the object reveiving the signal
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* @path_string: the path identifying the row of the edited cell
*
* Gets emitted when the user has removed the accelerator.
*/
signals[ACCEL_CLEARED] = g_signal_new (I_("accel-cleared"),
GTK_TYPE_CELL_RENDERER_ACCEL,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkCellRendererAccelClass, accel_cleared),
NULL, NULL,
g_cclosure_marshal_VOID__STRING,
G_TYPE_NONE, 1,
G_TYPE_STRING);
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}
/**
* gtk_cell_renderer_accel_new:
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*
* Creates a new #GtkCellRendererAccel.
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*
* Returns: the new cell renderer
*/
GtkCellRenderer *
gtk_cell_renderer_accel_new (void)
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{
return g_object_new (GTK_TYPE_CELL_RENDERER_ACCEL, NULL);
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}
static gchar *
convert_keysym_state_to_string (GtkCellRendererAccel *accel,
guint keysym,
GdkModifierType mask,
guint keycode)
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{
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GtkCellRendererAccelPrivate *priv = accel->priv;
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if (keysym == 0 && keycode == 0)
/* This label is displayed in a treeview cell displaying
* a disabled accelerator key combination.
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*/
return g_strdup (C_("Accelerator", "Disabled"));
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else
{
if (priv->accel_mode == GTK_CELL_RENDERER_ACCEL_MODE_GTK)
{
if (!gtk_accelerator_valid (keysym, mask))
/* This label is displayed in a treeview cell displaying
* an accelerator key combination that is not valid according
* to gtk_accelerator_valid().
*/
return g_strdup (C_("Accelerator", "Invalid"));
return gtk_accelerator_get_label (keysym, mask);
}
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else
{
gchar *name;
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name = gtk_accelerator_get_label_with_keycode (NULL, keysym, keycode, mask);
if (name == NULL)
name = gtk_accelerator_name_with_keycode (NULL, keysym, keycode, mask);
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return name;
}
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}
}
static void
gtk_cell_renderer_accel_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
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{
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GtkCellRendererAccelPrivate *priv = GTK_CELL_RENDERER_ACCEL (object)->priv;
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switch (param_id)
{
case PROP_ACCEL_KEY:
g_value_set_uint (value, priv->accel_key);
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break;
case PROP_ACCEL_MODS:
g_value_set_flags (value, priv->accel_mods);
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break;
case PROP_KEYCODE:
g_value_set_uint (value, priv->keycode);
break;
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case PROP_ACCEL_MODE:
g_value_set_enum (value, priv->accel_mode);
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break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
}
}
static void
gtk_cell_renderer_accel_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
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{
GtkCellRendererAccel *accel = GTK_CELL_RENDERER_ACCEL (object);
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GtkCellRendererAccelPrivate *priv = accel->priv;
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gboolean changed = FALSE;
switch (param_id)
{
case PROP_ACCEL_KEY:
{
guint accel_key = g_value_get_uint (value);
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if (priv->accel_key != accel_key)
{
priv->accel_key = accel_key;
changed = TRUE;
g_object_notify (object, "accel-key");
}
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}
break;
case PROP_ACCEL_MODS:
{
guint accel_mods = g_value_get_flags (value);
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if (priv->accel_mods != accel_mods)
{
priv->accel_mods = accel_mods;
changed = TRUE;
g_object_notify (object, "accel-mods");
}
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}
break;
case PROP_KEYCODE:
{
guint keycode = g_value_get_uint (value);
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if (priv->keycode != keycode)
{
priv->keycode = keycode;
changed = TRUE;
g_object_notify (object, "keycode");
}
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}
break;
case PROP_ACCEL_MODE:
if (priv->accel_mode != g_value_get_enum (value))
{
priv->accel_mode = g_value_get_enum (value);
g_object_notify (object, "accel-mode");
}
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break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
}
if (changed)
{
gchar *text;
text = convert_keysym_state_to_string (accel, priv->accel_key, priv->accel_mods, priv->keycode);
g_object_set (accel, "text", text, NULL);
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g_free (text);
}
}
static void
gtk_cell_renderer_accel_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
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{
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GtkCellRendererAccelPrivate *priv = GTK_CELL_RENDERER_ACCEL (cell)->priv;
GtkRequisition min_req, nat_req;
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if (priv->sizing_label == NULL)
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{
priv->sizing_label = gtk_label_new (_("New accelerator…"));
g_object_ref_sink (priv->sizing_label);
}
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gtk_widget_get_preferred_size (priv->sizing_label, &min_req, &nat_req);
GTK_CELL_RENDERER_CLASS (gtk_cell_renderer_accel_parent_class)->get_preferred_width (cell, widget,
minimum_size, natural_size);
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/* FIXME: need to take the cell_area et al. into account */
if (minimum_size)
*minimum_size = MAX (*minimum_size, min_req.width);
if (natural_size)
*natural_size = MAX (*natural_size, nat_req.width);
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}
static GtkCellEditable *
gtk_cell_renderer_accel_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererAccelPrivate *priv;
GtkCellRendererText *celltext;
GtkCellRendererAccel *accel;
GtkWidget *label;
GtkWidget *editable;
gboolean is_editable;
GdkDevice *device, *pointer;
GdkSurface *surface;
celltext = GTK_CELL_RENDERER_TEXT (cell);
accel = GTK_CELL_RENDERER_ACCEL (cell);
priv = accel->priv;
/* If the cell isn't editable we return NULL. */
g_object_get (celltext, "editable", &is_editable, NULL);
if (!is_editable)
return NULL;
surface = gtk_widget_get_surface (gtk_widget_get_toplevel (widget));
if (event)
device = gdk_event_get_device (event);
else
device = gtk_get_current_event_device ();
if (!device || !surface)
return NULL;
if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
pointer = gdk_device_get_associated_device (device);
else
pointer = device;
if (gdk_seat_grab (gdk_device_get_seat (pointer), surface,
GDK_SEAT_CAPABILITY_ALL, FALSE,
NULL, event, NULL, NULL) != GDK_GRAB_SUCCESS)
return NULL;
priv->grab_pointer = pointer;
editable = gtk_cell_editable_widget_new (cell, priv->accel_mode, path);
label = gtk_label_new (NULL);
gtk_widget_set_halign (label, GTK_ALIGN_START);
gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
gtk_widget_set_state_flags (label, GTK_STATE_FLAG_SELECTED, TRUE);
/* This label is displayed in a treeview cell displaying an accelerator
* when the cell is clicked to change the acelerator.
*/
gtk_label_set_text (GTK_LABEL (label), _("New accelerator…"));
gtk_container_add (GTK_CONTAINER (editable), label);
gtk_grab_add (editable);
return GTK_CELL_EDITABLE (editable);
}
static void
gtk_cell_renderer_accel_ungrab (GtkCellRendererAccel *accel)
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{
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GtkCellRendererAccelPrivate *priv = accel->priv;
if (priv->grab_pointer)
{
gdk_seat_ungrab (gdk_device_get_seat (priv->grab_pointer));
priv->grab_pointer = NULL;
}
}
/* --------------------------------- */
typedef struct _GtkCellEditableWidget GtkCellEditableWidget;
typedef GtkWidgetClass GtkCellEditableWidgetClass;
struct _GtkCellEditableWidget
{
GtkWidget parent;
gboolean editing_canceled;
GtkCellRendererAccelMode accel_mode;
gchar *path;
GtkCellRenderer *cell;
};
enum {
PROP_EDITING_CANCELED = 1,
PROP_MODE,
PROP_PATH
};
GType gtk_cell_editable_widget_get_type (void);
static void gtk_cell_editable_widget_cell_editable_init (GtkCellEditableIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkCellEditableWidget, gtk_cell_editable_widget, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_EDITABLE, gtk_cell_editable_widget_cell_editable_init))
static void
gtk_cell_editable_widget_start_editing (GtkCellEditable *cell_editable,
GdkEvent *event)
{
/* do nothing, because we are pointless */
}
static void
gtk_cell_editable_widget_cell_editable_init (GtkCellEditableIface *iface)
{
iface->start_editing = gtk_cell_editable_widget_start_editing;
}
static gboolean
gtk_cell_editable_widget_key_press_event (GtkWidget *widget,
GdkEventKey *event)
{
GtkCellEditableWidget *box = (GtkCellEditableWidget*)widget;
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GdkModifierType accel_mods = 0;
guint accel_key;
guint keyval = 0;
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gboolean edited;
gboolean cleared;
GdkModifierType consumed_modifiers;
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GdkDisplay *display;
gboolean is_modifier = FALSE;
guint16 keycode = 0;
guint group = 0;
GdkModifierType state = 0;
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display = gtk_widget_get_display (widget);
gdk_event_get_state ((GdkEvent *)event, &state);
gdk_event_get_keyval ((GdkEvent *)event, &keyval);
gdk_event_get_keycode ((GdkEvent *)event, &keycode);
gdk_event_get_key_group ((GdkEvent *)event, &group);
gdk_event_get_key_is_modifier ((GdkEvent *)event, &is_modifier);
if (is_modifier)
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return TRUE;
edited = FALSE;
cleared = FALSE;
accel_mods = state;
if (keyval == GDK_KEY_Sys_Req &&
(accel_mods & GDK_MOD1_MASK) != 0)
{
/* HACK: we don't want to use SysRq as a keybinding (but we do
* want Alt+Print), so we avoid translation from Alt+Print to SysRq
*/
keyval = GDK_KEY_Print;
consumed_modifiers = 0;
}
else
{
_gtk_translate_keyboard_accel_state (gdk_display_get_keymap (display),
keycode,
state,
gtk_accelerator_get_default_mod_mask (),
group,
&keyval, NULL, NULL, &consumed_modifiers);
}
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accel_key = gdk_keyval_to_lower (keyval);
if (accel_key == GDK_KEY_ISO_Left_Tab)
accel_key = GDK_KEY_Tab;
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accel_mods &= gtk_accelerator_get_default_mod_mask ();
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/* Filter consumed modifiers */
if (box->accel_mode == GTK_CELL_RENDERER_ACCEL_MODE_GTK)
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accel_mods &= ~consumed_modifiers;
/* Put shift back if it changed the case of the key, not otherwise. */
if (accel_key != keyval)
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accel_mods |= GDK_SHIFT_MASK;
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if (accel_mods == 0)
{
switch (keyval)
{
case GDK_KEY_BackSpace:
cleared = TRUE;
/* fall thru */
case GDK_KEY_Escape:
goto out;
default:
break;
}
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}
if (box->accel_mode == GTK_CELL_RENDERER_ACCEL_MODE_GTK &&
!gtk_accelerator_valid (accel_key, accel_mods))
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{
gtk_widget_error_bell (widget);
return TRUE;
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}
edited = TRUE;
out:
gtk_grab_remove (widget);
gtk_cell_renderer_accel_ungrab (GTK_CELL_RENDERER_ACCEL (box->cell));
gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (widget));
gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (widget));
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if (edited)
g_signal_emit (box->cell, signals[ACCEL_EDITED], 0, box->path,
accel_key, accel_mods, keycode);
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else if (cleared)
g_signal_emit (box->cell, signals[ACCEL_CLEARED], 0, box->path);
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return TRUE;
}
static void
gtk_cell_editable_widget_unrealize (GtkWidget *widget)
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{
GtkCellEditableWidget *box = (GtkCellEditableWidget*)widget;
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gtk_grab_remove (widget);
gtk_cell_renderer_accel_ungrab (GTK_CELL_RENDERER_ACCEL (box->cell));
GTK_WIDGET_CLASS (gtk_cell_editable_widget_parent_class)->unrealize (widget);
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}
static void
gtk_cell_editable_widget_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCellEditableWidget *box = (GtkCellEditableWidget*)object;
switch (prop_id)
{
case PROP_EDITING_CANCELED:
box->editing_canceled = g_value_get_boolean (value);
break;
case PROP_MODE:
box->accel_mode = g_value_get_enum (value);
break;
case PROP_PATH:
box->path = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_cell_editable_widget_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkCellEditableWidget *box = (GtkCellEditableWidget*)object;
switch (prop_id)
{
case PROP_EDITING_CANCELED:
g_value_set_boolean (value, box->editing_canceled);
break;
case PROP_MODE:
g_value_set_enum (value, box->accel_mode);
break;
case PROP_PATH:
g_value_set_string (value, box->path);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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static void
gtk_cell_editable_widget_finalize (GObject *object)
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{
GtkCellEditableWidget *box = (GtkCellEditableWidget*)object;
g_free (box->path);
G_OBJECT_CLASS (gtk_cell_editable_widget_parent_class)->finalize (object);
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}
static void
gtk_cell_editable_widget_class_init (GtkCellEditableWidgetClass *class)
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{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
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object_class->finalize = gtk_cell_editable_widget_finalize;
object_class->set_property = gtk_cell_editable_widget_set_property;
object_class->get_property = gtk_cell_editable_widget_get_property;
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widget_class->key_press_event = gtk_cell_editable_widget_key_press_event;
widget_class->unrealize = gtk_cell_editable_widget_unrealize;
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g_object_class_override_property (object_class,
PROP_EDITING_CANCELED,
"editing-canceled");
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g_object_class_install_property (object_class, PROP_MODE,
g_param_spec_enum ("accel-mode", NULL, NULL,
GTK_TYPE_CELL_RENDERER_ACCEL_MODE,
GTK_CELL_RENDERER_ACCEL_MODE_GTK,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_PATH,
g_param_spec_string ("path", NULL, NULL,
NULL, GTK_PARAM_READWRITE));
gtk_widget_class_set_css_name (widget_class, I_("acceleditor"));
}
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static void
gtk_cell_editable_widget_init (GtkCellEditableWidget *box)
{
gtk_widget_set_can_focus (GTK_WIDGET (box), TRUE);
}
static GtkWidget *
gtk_cell_editable_widget_new (GtkCellRenderer *cell,
GtkCellRendererAccelMode mode,
const gchar *path)
{
GtkCellEditableWidget *box;
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box = g_object_new (gtk_cell_editable_widget_get_type (),
"accel-mode", mode,
"path", path,
NULL);
box->cell = cell;
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return GTK_WIDGET (box);
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}