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gtk2/gtk/gtkcellrendereraccel.c

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/* gtkcellrendereraccel.h
* 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
* 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 "gtkintl.h"
#include "gtkaccelgroup.h"
#include "gtkmarshalers.h"
#include "gtkcellrendereraccel.h"
#include "gtklabel.h"
#include "gtkeventbox.h"
#include "gtkmain.h"
#include "gtkprivate.h"
#include "gdk/gdkkeysyms.h"
#define GTK_CELL_RENDERER_ACCEL_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_CELL_RENDERER_ACCEL, GtkCellRendererAccelPrivate))
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_size (GtkCellRenderer *cell,
GtkWidget *widget,
GdkRectangle *cell_area,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height);
static GtkCellEditable *
gtk_cell_renderer_accel_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GtkCellRendererState flags);
static gchar *convert_keysym_state_to_string (GtkCellRendererAccel *accel,
guint keysym,
GdkModifierType mask,
guint keycode);
enum {
ACCEL_EDITED,
ACCEL_CLEARED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_ACCEL_KEY,
PROP_ACCEL_MODS,
PROP_KEYCODE,
PROP_ACCEL_MODE
};
typedef struct GtkCellRendererAccelPrivate GtkCellRendererAccelPrivate;
struct GtkCellRendererAccelPrivate
{
GdkDevice *grab_keyboard;
GdkDevice *grab_pointer;
};
static guint signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (GtkCellRendererAccel, gtk_cell_renderer_accel, GTK_TYPE_CELL_RENDERER_TEXT)
static void
gtk_cell_renderer_accel_init (GtkCellRendererAccel *cell_accel)
{
gchar *text;
text = convert_keysym_state_to_string (cell_accel, 0, 0, 0);
g_object_set (cell_accel, "text", text, NULL);
g_free (text);
}
static void
gtk_cell_renderer_accel_class_init (GtkCellRendererAccelClass *cell_accel_class)
{
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);
object_class->set_property = gtk_cell_renderer_accel_set_property;
object_class->get_property = gtk_cell_renderer_accel_get_property;
cell_renderer_class->get_size = gtk_cell_renderer_accel_get_size;
cell_renderer_class->start_editing = gtk_cell_renderer_accel_start_editing;
/**
* GtkCellRendererAccel:accel-key:
*
* The keyval of the accelerator.
*
* Since: 2.10
*/
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));
/**
* GtkCellRendererAccel:accel-mods:
*
* The modifier mask of the accelerator.
*
* Since: 2.10
*/
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));
/**
* GtkCellRendererAccel:keycode:
*
* 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.
*
* Since: 2.10
*/
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));
/**
* GtkCellRendererAccel:accel-mode:
*
* 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.
*
* Since: 2.10
*/
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));
/**
* GtkCellRendererAccel::accel-edited:
* @accel: the object reveiving the signal
* @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.
*
* Since: 2.10
*/
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);
/**
* GtkCellRendererAccel::accel-cleared:
* @accel: the object reveiving the signal
* @path_string: the path identifying the row of the edited cell
*
* Gets emitted when the user has removed the accelerator.
*
* Since: 2.10
*/
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);
g_type_class_add_private (object_class, sizeof (GtkCellRendererAccelPrivate));
}
/**
* gtk_cell_renderer_accel_new:
*
* Creates a new #GtkCellRendererAccel.
*
* Returns: the new cell renderer
*
* Since: 2.10
*/
GtkCellRenderer *
gtk_cell_renderer_accel_new (void)
{
return g_object_new (GTK_TYPE_CELL_RENDERER_ACCEL, NULL);
}
static gchar *
convert_keysym_state_to_string (GtkCellRendererAccel *accel,
guint keysym,
GdkModifierType mask,
guint keycode)
{
if (keysym == 0 && keycode == 0)
/* This label is displayed in a treeview cell displaying
* a disabled accelerator key combination.
*/
return g_strdup (C_("Accelerator", "Disabled"));
else
{
if (accel->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);
}
else
{
gchar *name;
name = gtk_accelerator_get_label (keysym, mask);
if (name == NULL)
name = gtk_accelerator_name (keysym, mask);
if (keysym == 0)
{
gchar *tmp;
tmp = name;
name = g_strdup_printf ("%s0x%02x", tmp, keycode);
g_free (tmp);
}
return name;
}
}
}
static void
gtk_cell_renderer_accel_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GtkCellRendererAccel *accel = GTK_CELL_RENDERER_ACCEL (object);
switch (param_id)
{
case PROP_ACCEL_KEY:
g_value_set_uint (value, accel->accel_key);
break;
case PROP_ACCEL_MODS:
g_value_set_flags (value, accel->accel_mods);
break;
case PROP_KEYCODE:
g_value_set_uint (value, accel->keycode);
break;
case PROP_ACCEL_MODE:
g_value_set_enum (value, accel->accel_mode);
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)
{
GtkCellRendererAccel *accel = GTK_CELL_RENDERER_ACCEL (object);
gboolean changed = FALSE;
switch (param_id)
{
case PROP_ACCEL_KEY:
{
guint accel_key = g_value_get_uint (value);
if (accel->accel_key != accel_key)
{
accel->accel_key = accel_key;
changed = TRUE;
}
}
break;
case PROP_ACCEL_MODS:
{
guint accel_mods = g_value_get_flags (value);
if (accel->accel_mods != accel_mods)
{
accel->accel_mods = accel_mods;
changed = TRUE;
}
}
break;
case PROP_KEYCODE:
{
guint keycode = g_value_get_uint (value);
if (accel->keycode != keycode)
{
accel->keycode = keycode;
changed = TRUE;
}
}
break;
case PROP_ACCEL_MODE:
accel->accel_mode = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
}
if (changed)
{
gchar *text;
text = convert_keysym_state_to_string (accel, accel->accel_key, accel->accel_mods, accel->keycode);
g_object_set (accel, "text", text, NULL);
g_free (text);
}
}
static void
gtk_cell_renderer_accel_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
GdkRectangle *cell_area,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height)
{
GtkCellRendererAccel *accel = (GtkCellRendererAccel *) cell;
GtkRequisition requisition;
if (accel->sizing_label == NULL)
accel->sizing_label = gtk_label_new (_("New accelerator..."));
gtk_widget_size_request (accel->sizing_label, &requisition);
GTK_CELL_RENDERER_CLASS (gtk_cell_renderer_accel_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);
}
static gboolean
grab_key_callback (GtkWidget *widget,
GdkEventKey *event,
GtkCellRendererAccel *accel)
{
GtkCellRendererAccelPrivate *priv;
GdkModifierType accel_mods = 0;
guint accel_key;
gchar *path;
gboolean edited;
gboolean cleared;
GdkModifierType consumed_modifiers;
GdkDisplay *display;
priv = GTK_CELL_RENDERER_ACCEL_GET_PRIVATE (accel);
display = gtk_widget_get_display (widget);
if (event->is_modifier)
return TRUE;
edited = FALSE;
cleared = FALSE;
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);
if (accel_key == GDK_ISO_Left_Tab)
accel_key = GDK_Tab;
accel_mods = event->state & gtk_accelerator_get_default_mod_mask ();
/* Filter consumed modifiers
*/
if (accel->accel_mode == GTK_CELL_RENDERER_ACCEL_MODE_GTK)
accel_mods &= ~consumed_modifiers;
/* Put shift back if it changed the case of the key, not otherwise.
*/
if (accel_key != event->keyval)
accel_mods |= GDK_SHIFT_MASK;
if (accel_mods == 0)
{
switch (event->keyval)
{
case GDK_Escape:
goto out; /* cancel */
case GDK_BackSpace:
/* clear the accelerator on Backspace */
cleared = TRUE;
goto out;
default:
break;
}
}
if (accel->accel_mode == GTK_CELL_RENDERER_ACCEL_MODE_GTK)
{
if (!gtk_accelerator_valid (accel_key, accel_mods))
{
gtk_widget_error_bell (widget);
return TRUE;
}
}
edited = TRUE;
out:
gtk_device_grab_remove (accel->grab_widget, priv->grab_pointer);
gdk_device_ungrab (priv->grab_keyboard, event->time);
gdk_device_ungrab (priv->grab_pointer, event->time);
path = g_strdup (g_object_get_data (G_OBJECT (accel->edit_widget), "gtk-cell-renderer-text"));
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;
priv->grab_keyboard = NULL;
priv->grab_pointer = NULL;
if (edited)
g_signal_emit (accel, signals[ACCEL_EDITED], 0, path,
accel_key, accel_mods, event->hardware_keycode);
else if (cleared)
g_signal_emit (accel, signals[ACCEL_CLEARED], 0, path);
g_free (path);
return TRUE;
}
static void
ungrab_stuff (GtkWidget *widget,
GtkCellRendererAccel *accel)
{
GtkCellRendererAccelPrivate *priv;
priv = GTK_CELL_RENDERER_ACCEL_GET_PRIVATE (accel);
gtk_device_grab_remove (accel->grab_widget, priv->grab_pointer);
gdk_device_ungrab (priv->grab_keyboard, GDK_CURRENT_TIME);
gdk_device_ungrab (priv->grab_pointer, GDK_CURRENT_TIME);
priv->grab_keyboard = NULL;
priv->grab_pointer = NULL;
g_signal_handlers_disconnect_by_func (G_OBJECT (accel->grab_widget),
G_CALLBACK (grab_key_callback),
accel);
}
static void
_gtk_cell_editable_event_box_start_editing (GtkCellEditable *cell_editable,
GdkEvent *event)
{
/* do nothing, because we are pointless */
}
static void
_gtk_cell_editable_event_box_cell_editable_init (GtkCellEditableIface *iface)
{
iface->start_editing = _gtk_cell_editable_event_box_start_editing;
}
typedef GtkEventBox GtkCellEditableEventBox;
typedef GtkEventBoxClass GtkCellEditableEventBoxClass;
G_DEFINE_TYPE_WITH_CODE (GtkCellEditableEventBox, _gtk_cell_editable_event_box, GTK_TYPE_EVENT_BOX, { \
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_EDITABLE, _gtk_cell_editable_event_box_cell_editable_init) \
})
static void
_gtk_cell_editable_event_box_class_init (GtkCellEditableEventBoxClass *class)
{
}
static void
_gtk_cell_editable_event_box_init (GtkCellEditableEventBox *box)
{
}
static GtkCellEditable *
gtk_cell_renderer_accel_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererAccelPrivate *priv;
GtkCellRendererText *celltext;
GtkCellRendererAccel *accel;
GtkWidget *label;
GtkWidget *eventbox;
GdkDevice *device, *keyb, *pointer;
guint32 time;
celltext = GTK_CELL_RENDERER_TEXT (cell);
accel = GTK_CELL_RENDERER_ACCEL (cell);
priv = GTK_CELL_RENDERER_ACCEL_GET_PRIVATE (cell);
/* If the cell isn't editable we return NULL. */
if (celltext->editable == FALSE)
return NULL;
g_return_val_if_fail (widget->window != NULL, NULL);
if (event)
device = gdk_event_get_device (event);
else
device = gtk_get_current_event_device ();
if (!device)
return NULL;
if (device->source == GDK_SOURCE_KEYBOARD)
{
keyb = device;
pointer = gdk_device_get_associated_device (device);
}
else
{
pointer = device;
keyb = gdk_device_get_associated_device (device);
}
time = gdk_event_get_time (event);
if (gdk_device_grab (keyb, widget->window,
GDK_OWNERSHIP_WINDOW, FALSE,
GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK,
NULL, time) != GDK_GRAB_SUCCESS)
return NULL;
if (gdk_device_grab (pointer, widget->window,
GDK_OWNERSHIP_WINDOW, FALSE,
GDK_BUTTON_PRESS_MASK,
NULL, time) != GDK_GRAB_SUCCESS)
{
gdk_device_ungrab (keyb, time);
return NULL;
}
priv->grab_keyboard = keyb;
priv->grab_pointer = pointer;
accel->grab_widget = widget;
g_signal_connect (G_OBJECT (widget), "key-press-event",
G_CALLBACK (grab_key_callback),
accel);
eventbox = g_object_new (_gtk_cell_editable_event_box_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]);
/* 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 (eventbox), label);
g_object_set_data_full (G_OBJECT (accel->edit_widget), "gtk-cell-renderer-text",
g_strdup (path), g_free);
gtk_widget_show_all (accel->edit_widget);
gtk_device_grab_add (accel->grab_widget, pointer, TRUE);
g_signal_connect (G_OBJECT (accel->edit_widget), "unrealize",
G_CALLBACK (ungrab_stuff), accel);
return GTK_CELL_EDITABLE (accel->edit_widget);
}
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