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gtk2/gtk/gtkstatusbar.c

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* GtkStatusbar Copyright (C) 1998 Shawn T. Amundson
*
* 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
* Lesser 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.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtkframe.h"
#include "gtklabel.h"
#include "gtkmarshalers.h"
#include "gtkstatusbar.h"
#include "gtkwindow.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkbuildable.h"
/**
* SECTION:gtkstatusbar
* @title: GtkStatusbar
* @short_description: Report messages of minor importance to the user
*
* A #GtkStatusbar is usually placed along the bottom of an application's
* main #GtkWindow. It may provide a regular commentary of the application's
* status (as is usually the case in a web browser, for example), or may be
* used to simply output a message when the status changes, (when an upload
* is complete in an FTP client, for example).
* It may also have a resize grip (a triangular area in the lower right
* corner) which can be clicked on to resize the window containing the
* statusbar.
*
* Status bars in GTK+ maintain a stack of messages. The message at
* the top of the each bar's stack is the one that will currently be displayed.
*
* Any messages added to a statusbar's stack must specify a
* <emphasis>context id</emphasis> that is used to uniquely identify
* the source of a message. This context id can be generated by
* gtk_statusbar_get_context_id(), given a message and the statusbar that
* it will be added to. Note that messages are stored in a stack, and when
* choosing which message to display, the stack structure is adhered to,
* regardless of the context identifier of a message.
*
* One could say that a statusbar maintains one stack of messages for
* display purposes, but allows multiple message producers to maintain
* sub-stacks of the messages they produced (via context ids).
*
* Status bars are created using gtk_statusbar_new().
*
* Messages are added to the bar's stack with gtk_statusbar_push().
*
* The message at the top of the stack can be removed using
* gtk_statusbar_pop(). A message can be removed from anywhere in the
* stack if its message id was recorded at the time it was added. This
* is done using gtk_statusbar_remove().
*/
typedef struct _GtkStatusbarMsg GtkStatusbarMsg;
struct _GtkStatusbarMsg
{
gchar *text;
guint context_id;
guint message_id;
};
enum
{
SIGNAL_TEXT_PUSHED,
SIGNAL_TEXT_POPPED,
SIGNAL_LAST
};
enum
{
PROP_0,
PROP_HAS_RESIZE_GRIP
};
static void gtk_statusbar_buildable_interface_init (GtkBuildableIface *iface);
static GObject *gtk_statusbar_buildable_get_internal_child (GtkBuildable *buildable,
GtkBuilder *builder,
const gchar *childname);
static void gtk_statusbar_destroy (GtkObject *object);
static void gtk_statusbar_update (GtkStatusbar *statusbar,
guint context_id,
const gchar *text);
static void gtk_statusbar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_statusbar_realize (GtkWidget *widget);
static void gtk_statusbar_unrealize (GtkWidget *widget);
static void gtk_statusbar_map (GtkWidget *widget);
static void gtk_statusbar_unmap (GtkWidget *widget);
static gboolean gtk_statusbar_button_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_statusbar_expose_event (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_statusbar_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_statusbar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_statusbar_direction_changed (GtkWidget *widget,
GtkTextDirection prev_dir);
static void gtk_statusbar_state_changed (GtkWidget *widget,
GtkStateType previous_state);
static void gtk_statusbar_create_window (GtkStatusbar *statusbar);
static void gtk_statusbar_destroy_window (GtkStatusbar *statusbar);
static void gtk_statusbar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_statusbar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void label_selectable_changed (GtkWidget *label,
GParamSpec *pspec,
gpointer data);
static guint statusbar_signals[SIGNAL_LAST] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkStatusbar, gtk_statusbar, GTK_TYPE_HBOX,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_statusbar_buildable_interface_init));
static void
gtk_statusbar_class_init (GtkStatusbarClass *class)
{
GObjectClass *gobject_class;
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
gobject_class = (GObjectClass *) class;
object_class = (GtkObjectClass *) class;
widget_class = (GtkWidgetClass *) class;
gobject_class->set_property = gtk_statusbar_set_property;
gobject_class->get_property = gtk_statusbar_get_property;
object_class->destroy = gtk_statusbar_destroy;
widget_class->realize = gtk_statusbar_realize;
widget_class->unrealize = gtk_statusbar_unrealize;
widget_class->map = gtk_statusbar_map;
widget_class->unmap = gtk_statusbar_unmap;
widget_class->button_press_event = gtk_statusbar_button_press;
widget_class->expose_event = gtk_statusbar_expose_event;
widget_class->size_request = gtk_statusbar_size_request;
widget_class->size_allocate = gtk_statusbar_size_allocate;
widget_class->direction_changed = gtk_statusbar_direction_changed;
widget_class->state_changed = gtk_statusbar_state_changed;
class->text_pushed = gtk_statusbar_update;
class->text_popped = gtk_statusbar_update;
/**
* GtkStatusbar:has-resize-grip:
*
* Whether the statusbar has a grip for resizing the toplevel window.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_HAS_RESIZE_GRIP,
g_param_spec_boolean ("has-resize-grip",
P_("Has Resize Grip"),
P_("Whether the statusbar has a grip for resizing the toplevel"),
TRUE,
GTK_PARAM_READWRITE));
/**
* GtkStatusbar::text-pushed:
* @statusbar: the object which received the signal.
* @context_id: the context id of the relevant message/statusbar.
* @text: the message that was pushed.
*
* Is emitted whenever a new message gets pushed onto a statusbar's stack.
*/
statusbar_signals[SIGNAL_TEXT_PUSHED] =
g_signal_new (I_("text-pushed"),
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkStatusbarClass, text_pushed),
NULL, NULL,
_gtk_marshal_VOID__UINT_STRING,
G_TYPE_NONE, 2,
G_TYPE_UINT,
G_TYPE_STRING);
/**
* GtkStatusbar::text-popped:
* @statusbar: the object which received the signal.
* @context_id: the context id of the relevant message/statusbar.
* @text: the message that was just popped.
*
* Is emitted whenever a new message is popped off a statusbar's stack.
*/
statusbar_signals[SIGNAL_TEXT_POPPED] =
g_signal_new (I_("text-popped"),
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkStatusbarClass, text_popped),
NULL, NULL,
_gtk_marshal_VOID__UINT_STRING,
G_TYPE_NONE, 2,
G_TYPE_UINT,
G_TYPE_STRING);
gtk_widget_class_install_style_property (widget_class,
g_param_spec_enum ("shadow-type",
P_("Shadow type"),
P_("Style of bevel around the statusbar text"),
GTK_TYPE_SHADOW_TYPE,
GTK_SHADOW_IN,
GTK_PARAM_READABLE));
}
static void
gtk_statusbar_init (GtkStatusbar *statusbar)
{
GtkBox *box;
GtkWidget *message_area;
GtkShadowType shadow_type;
box = GTK_BOX (statusbar);
gtk_widget_set_redraw_on_allocate (GTK_WIDGET (box), TRUE);
box->spacing = 2;
box->homogeneous = FALSE;
statusbar->has_resize_grip = TRUE;
gtk_widget_style_get (GTK_WIDGET (statusbar), "shadow-type", &shadow_type, NULL);
statusbar->frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), shadow_type);
gtk_box_pack_start (box, statusbar->frame, TRUE, TRUE, 0);
gtk_widget_show (statusbar->frame);
message_area = gtk_hbox_new (FALSE, 4);
gtk_container_add (GTK_CONTAINER (statusbar->frame), message_area);
gtk_widget_show (message_area);
statusbar->label = gtk_label_new ("");
gtk_label_set_single_line_mode (GTK_LABEL (statusbar->label), TRUE);
gtk_misc_set_alignment (GTK_MISC (statusbar->label), 0.0, 0.5);
g_signal_connect (statusbar->label, "notify::selectable",
G_CALLBACK (label_selectable_changed), statusbar);
gtk_label_set_ellipsize (GTK_LABEL (statusbar->label), PANGO_ELLIPSIZE_END);
gtk_container_add (GTK_CONTAINER (message_area), statusbar->label);
gtk_widget_show (statusbar->label);
statusbar->seq_context_id = 1;
statusbar->seq_message_id = 1;
statusbar->messages = NULL;
statusbar->keys = NULL;
}
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_statusbar_buildable_interface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->get_internal_child = gtk_statusbar_buildable_get_internal_child;
}
static GObject *
gtk_statusbar_buildable_get_internal_child (GtkBuildable *buildable,
GtkBuilder *builder,
const gchar *childname)
{
if (strcmp (childname, "message_area") == 0)
return G_OBJECT (gtk_bin_get_child (GTK_BIN (GTK_STATUSBAR (buildable)->frame)));
return parent_buildable_iface->get_internal_child (buildable,
builder,
childname);
}
/**
* gtk_statusbar_new:
*
* Creates a new #GtkStatusbar ready for messages.
*
* Returns: the new #GtkStatusbar
*/
GtkWidget*
gtk_statusbar_new (void)
{
return g_object_new (GTK_TYPE_STATUSBAR, NULL);
}
static void
gtk_statusbar_update (GtkStatusbar *statusbar,
guint context_id,
const gchar *text)
{
g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
if (!text)
text = "";
gtk_label_set_text (GTK_LABEL (statusbar->label), text);
}
/**
* gtk_statusbar_get_context_id:
* @statusbar: a #GtkStatusbar
* @context_description: textual description of what context
* the new message is being used in
*
* Returns a new context identifier, given a description
* of the actual context. Note that the description is
* <emphasis>not</emphasis> shown in the UI.
*
* Returns: an integer id
*/
guint
gtk_statusbar_get_context_id (GtkStatusbar *statusbar,
const gchar *context_description)
{
gchar *string;
guint id;
g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
g_return_val_if_fail (context_description != NULL, 0);
/* we need to preserve namespaces on object datas */
string = g_strconcat ("gtk-status-bar-context:", context_description, NULL);
id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (statusbar), string));
if (id == 0)
{
id = statusbar->seq_context_id++;
g_object_set_data_full (G_OBJECT (statusbar), string, GUINT_TO_POINTER (id), NULL);
statusbar->keys = g_slist_prepend (statusbar->keys, string);
}
else
g_free (string);
return id;
}
/**
* gtk_statusbar_push:
* @statusbar: a #GtkStatusbar
* @context_id: the message's context id, as returned by
* gtk_statusbar_get_context_id()
* @text: the message to add to the statusbar
*
* Pushes a new message onto a statusbar's stack.
*
* Returns: a message id that can be used with
* gtk_statusbar_remove().
*/
guint
gtk_statusbar_push (GtkStatusbar *statusbar,
guint context_id,
const gchar *text)
{
GtkStatusbarMsg *msg;
g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
g_return_val_if_fail (text != NULL, 0);
msg = g_slice_new (GtkStatusbarMsg);
msg->text = g_strdup (text);
msg->context_id = context_id;
msg->message_id = statusbar->seq_message_id++;
statusbar->messages = g_slist_prepend (statusbar->messages, msg);
g_signal_emit (statusbar,
statusbar_signals[SIGNAL_TEXT_PUSHED],
0,
msg->context_id,
msg->text);
return msg->message_id;
}
/**
* gtk_statusbar_pop:
* @statusbar: a #GtkStatusBar
* @context_id: a context identifier
*
* Removes the first message in the #GtkStatusBar's stack
* with the given context id.
*
* Note that this may not change the displayed message, if
* the message at the top of the stack has a different
* context id.
*/
void
gtk_statusbar_pop (GtkStatusbar *statusbar,
guint context_id)
{
GtkStatusbarMsg *msg;
g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
if (statusbar->messages)
{
GSList *list;
for (list = statusbar->messages; list; list = list->next)
{
msg = list->data;
if (msg->context_id == context_id)
{
statusbar->messages = g_slist_remove_link (statusbar->messages,
list);
g_free (msg->text);
g_slice_free (GtkStatusbarMsg, msg);
g_slist_free_1 (list);
break;
}
}
}
msg = statusbar->messages ? statusbar->messages->data : NULL;
g_signal_emit (statusbar,
statusbar_signals[SIGNAL_TEXT_POPPED],
0,
(guint) (msg ? msg->context_id : 0),
msg ? msg->text : NULL);
}
/**
* gtk_statusbar_remove:
* @statusbar: a #GtkStatusBar
* @context_id: a context identifier
* @message_id: a message identifier, as returned by gtk_statusbar_push()
*
* Forces the removal of a message from a statusbar's stack.
* The exact @context_id and @message_id must be specified.
*/
void
gtk_statusbar_remove (GtkStatusbar *statusbar,
guint context_id,
guint message_id)
{
GtkStatusbarMsg *msg;
g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
g_return_if_fail (message_id > 0);
msg = statusbar->messages ? statusbar->messages->data : NULL;
if (msg)
{
GSList *list;
/* care about signal emission if the topmost item is removed */
if (msg->context_id == context_id &&
msg->message_id == message_id)
{
gtk_statusbar_pop (statusbar, context_id);
return;
}
for (list = statusbar->messages; list; list = list->next)
{
msg = list->data;
if (msg->context_id == context_id &&
msg->message_id == message_id)
{
statusbar->messages = g_slist_remove_link (statusbar->messages, list);
g_free (msg->text);
g_slice_free (GtkStatusbarMsg, msg);
g_slist_free_1 (list);
break;
}
}
}
}
/**
* gtk_statusbar_remove_all:
* @statusbar: a #GtkStatusBar
* @context_id: a context identifier
*
* Forces the removal of all messages from a statusbar's
* stack with the exact @context_id.
*
* Since: 2.22
*/
void
gtk_statusbar_remove_all (GtkStatusbar *statusbar,
guint context_id)
{
GtkStatusbarMsg *msg;
GSList *prev, *list;
g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
if (statusbar->messages == NULL)
return;
msg = statusbar->messages->data;
/* care about signal emission if the topmost item is removed */
if (msg->context_id == context_id)
{
gtk_statusbar_pop (statusbar, context_id);
prev = NULL;
list = statusbar->messages;
}
else
{
prev = statusbar->messages;
list = prev->next;
}
while (list != NULL)
{
msg = list->data;
if (msg->context_id == context_id)
{
if (prev == NULL)
statusbar->messages = list->next;
else
prev->next = list->next;
g_free (msg->text);
g_slice_free (GtkStatusbarMsg, msg);
g_slist_free_1 (list);
if (prev == NULL)
prev = statusbar->messages;
list = prev->next;
}
else
{
prev = list;
list = prev->next;
}
}
}
/**
* gtk_statusbar_set_has_resize_grip:
* @statusbar: a #GtkStatusBar
* @setting: %TRUE to have a resize grip
*
* Sets whether the statusbar has a resize grip.
* %TRUE by default.
*/
void
gtk_statusbar_set_has_resize_grip (GtkStatusbar *statusbar,
gboolean setting)
{
g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
setting = setting != FALSE;
if (setting != statusbar->has_resize_grip)
{
statusbar->has_resize_grip = setting;
gtk_widget_queue_resize (statusbar->label);
gtk_widget_queue_draw (GTK_WIDGET (statusbar));
if (gtk_widget_get_realized (GTK_WIDGET (statusbar)))
{
if (statusbar->has_resize_grip && statusbar->grip_window == NULL)
{
gtk_statusbar_create_window (statusbar);
if (gtk_widget_get_mapped (GTK_WIDGET (statusbar)))
gdk_window_show (statusbar->grip_window);
}
else if (!statusbar->has_resize_grip && statusbar->grip_window != NULL)
gtk_statusbar_destroy_window (statusbar);
}
g_object_notify (G_OBJECT (statusbar), "has-resize-grip");
}
}
/**
* gtk_statusbar_get_has_resize_grip:
* @statusbar: a #GtkStatusBar
*
* Returns whether the statusbar has a resize grip.
*
* Returns: %TRUE if the statusbar has a resize grip.
*/
gboolean
gtk_statusbar_get_has_resize_grip (GtkStatusbar *statusbar)
{
g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), FALSE);
return statusbar->has_resize_grip;
}
/**
* gtk_statusbar_get_message_area:
* @statusbar: a #GtkStatusBar
*
* Retrieves the box containing the label widget.
*
* Returns: a #GtkBox
*
* Since: 2.20
*/
GtkWidget*
gtk_statusbar_get_message_area (GtkStatusbar *statusbar)
{
g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), NULL);
return gtk_bin_get_child (GTK_BIN (statusbar->frame));
}
static void
gtk_statusbar_destroy (GtkObject *object)
{
GtkStatusbar *statusbar = GTK_STATUSBAR (object);
GSList *list;
for (list = statusbar->messages; list; list = list->next)
{
GtkStatusbarMsg *msg;
msg = list->data;
g_free (msg->text);
g_slice_free (GtkStatusbarMsg, msg);
}
g_slist_free (statusbar->messages);
statusbar->messages = NULL;
for (list = statusbar->keys; list; list = list->next)
g_free (list->data);
g_slist_free (statusbar->keys);
statusbar->keys = NULL;
GTK_OBJECT_CLASS (gtk_statusbar_parent_class)->destroy (object);
}
static void
gtk_statusbar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkStatusbar *statusbar = GTK_STATUSBAR (object);
switch (prop_id)
{
case PROP_HAS_RESIZE_GRIP:
gtk_statusbar_set_has_resize_grip (statusbar, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_statusbar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkStatusbar *statusbar = GTK_STATUSBAR (object);
switch (prop_id)
{
case PROP_HAS_RESIZE_GRIP:
g_value_set_boolean (value, statusbar->has_resize_grip);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GdkWindowEdge
get_grip_edge (GtkStatusbar *statusbar)
{
GtkWidget *widget = GTK_WIDGET (statusbar);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
return GDK_WINDOW_EDGE_SOUTH_EAST;
else
return GDK_WINDOW_EDGE_SOUTH_WEST;
}
static void
get_grip_rect (GtkStatusbar *statusbar,
GdkRectangle *rect)
{
GtkWidget *widget;
gint w, h;
widget = GTK_WIDGET (statusbar);
/* These are in effect the max/default size of the grip. */
w = 18;
h = 18;
if (w > widget->allocation.width)
w = widget->allocation.width;
if (h > widget->allocation.height - widget->style->ythickness)
h = widget->allocation.height - widget->style->ythickness;
rect->width = w;
rect->height = h;
rect->y = widget->allocation.y + widget->allocation.height - h;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
rect->x = widget->allocation.x + widget->allocation.width - w;
else
rect->x = widget->allocation.x + widget->style->xthickness;
}
static void
set_grip_cursor (GtkStatusbar *statusbar)
{
if (statusbar->has_resize_grip && statusbar->grip_window != NULL)
{
GtkWidget *widget = GTK_WIDGET (statusbar);
GdkDisplay *display = gtk_widget_get_display (widget);
GdkCursorType cursor_type;
GdkCursor *cursor;
if (gtk_widget_is_sensitive (widget))
{
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
cursor_type = GDK_BOTTOM_RIGHT_CORNER;
else
cursor_type = GDK_BOTTOM_LEFT_CORNER;
cursor = gdk_cursor_new_for_display (display, cursor_type);
gdk_window_set_cursor (statusbar->grip_window, cursor);
gdk_cursor_unref (cursor);
}
else
gdk_window_set_cursor (statusbar->grip_window, NULL);
}
}
static void
gtk_statusbar_create_window (GtkStatusbar *statusbar)
{
GtkWidget *widget;
GdkWindowAttr attributes;
gint attributes_mask;
GdkRectangle rect;
widget = GTK_WIDGET (statusbar);
g_return_if_fail (gtk_widget_get_realized (widget));
g_return_if_fail (statusbar->has_resize_grip);
get_grip_rect (statusbar, &rect);
attributes.x = rect.x;
attributes.y = rect.y;
attributes.width = rect.width;
attributes.height = rect.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_ONLY;
attributes.event_mask = gtk_widget_get_events (widget) |
GDK_BUTTON_PRESS_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y;
statusbar->grip_window = gdk_window_new (widget->window,
&attributes, attributes_mask);
gdk_window_set_user_data (statusbar->grip_window, widget);
gdk_window_raise (statusbar->grip_window);
set_grip_cursor (statusbar);
}
static void
gtk_statusbar_direction_changed (GtkWidget *widget,
GtkTextDirection prev_dir)
{
GtkStatusbar *statusbar = GTK_STATUSBAR (widget);
set_grip_cursor (statusbar);
}
static void
gtk_statusbar_state_changed (GtkWidget *widget,
GtkStateType previous_state)
{
GtkStatusbar *statusbar = GTK_STATUSBAR (widget);
set_grip_cursor (statusbar);
}
static void
gtk_statusbar_destroy_window (GtkStatusbar *statusbar)
{
gdk_window_set_user_data (statusbar->grip_window, NULL);
gdk_window_destroy (statusbar->grip_window);
statusbar->grip_window = NULL;
}
static void
gtk_statusbar_realize (GtkWidget *widget)
{
GtkStatusbar *statusbar;
statusbar = GTK_STATUSBAR (widget);
GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->realize (widget);
if (statusbar->has_resize_grip)
gtk_statusbar_create_window (statusbar);
}
static void
gtk_statusbar_unrealize (GtkWidget *widget)
{
GtkStatusbar *statusbar;
statusbar = GTK_STATUSBAR (widget);
if (statusbar->grip_window)
gtk_statusbar_destroy_window (statusbar);
GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->unrealize (widget);
}
static void
gtk_statusbar_map (GtkWidget *widget)
{
GtkStatusbar *statusbar;
statusbar = GTK_STATUSBAR (widget);
GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->map (widget);
if (statusbar->grip_window)
gdk_window_show (statusbar->grip_window);
}
static void
gtk_statusbar_unmap (GtkWidget *widget)
{
GtkStatusbar *statusbar;
statusbar = GTK_STATUSBAR (widget);
if (statusbar->grip_window)
gdk_window_hide (statusbar->grip_window);
GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->unmap (widget);
}
static gboolean
gtk_statusbar_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkStatusbar *statusbar;
GtkWidget *ancestor;
GdkWindowEdge edge;
statusbar = GTK_STATUSBAR (widget);
if (!statusbar->has_resize_grip ||
event->type != GDK_BUTTON_PRESS ||
event->window != statusbar->grip_window)
return FALSE;
ancestor = gtk_widget_get_toplevel (widget);
if (!GTK_IS_WINDOW (ancestor))
return FALSE;
edge = get_grip_edge (statusbar);
if (event->button == 1)
gtk_window_begin_resize_drag (GTK_WINDOW (ancestor),
edge,
event->button,
event->x_root, event->y_root,
event->time);
else if (event->button == 2)
gtk_window_begin_move_drag (GTK_WINDOW (ancestor),
event->button,
event->x_root, event->y_root,
event->time);
else
return FALSE;
return TRUE;
}
static gboolean
gtk_statusbar_expose_event (GtkWidget *widget,
GdkEventExpose *event)
{
GtkStatusbar *statusbar;
GdkRectangle rect;
statusbar = GTK_STATUSBAR (widget);
GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->expose_event (widget, event);
if (statusbar->has_resize_grip)
{
GdkWindowEdge edge;
edge = get_grip_edge (statusbar);
get_grip_rect (statusbar, &rect);
gtk_paint_resize_grip (widget->style,
widget->window,
gtk_widget_get_state (widget),
&event->area,
widget,
"statusbar",
edge,
rect.x, rect.y,
/* don't draw grip over the frame, though you
* can click on the frame.
*/
rect.width - widget->style->xthickness,
rect.height - widget->style->ythickness);
}
return FALSE;
}
static void
gtk_statusbar_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkStatusbar *statusbar;
GtkShadowType shadow_type;
statusbar = GTK_STATUSBAR (widget);
gtk_widget_style_get (GTK_WIDGET (statusbar), "shadow-type", &shadow_type, NULL);
gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), shadow_type);
GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->size_request (widget, requisition);
}
/* look for extra children between the frame containing
* the label and where we want to draw the resize grip
*/
static gboolean
has_extra_children (GtkStatusbar *statusbar)
{
GList *l;
GtkBoxChild *child, *frame;
/* If the internal frame has been modified assume we have extra children */
if (gtk_bin_get_child (GTK_BIN (statusbar->frame)) != statusbar->label)
return TRUE;
frame = NULL;
for (l = GTK_BOX (statusbar)->children; l; l = l->next)
{
frame = l->data;
if (frame->widget == statusbar->frame)
break;
}
for (l = l->next; l; l = l->next)
{
child = l->data;
if (!gtk_widget_get_visible (child->widget))
continue;
if (frame->pack == GTK_PACK_START || child->pack == GTK_PACK_END)
return TRUE;
}
return FALSE;
}
static void
gtk_statusbar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkStatusbar *statusbar = GTK_STATUSBAR (widget);
gboolean extra_children = FALSE;
GdkRectangle rect;
if (statusbar->has_resize_grip)
{
get_grip_rect (statusbar, &rect);
extra_children = has_extra_children (statusbar);
/* If there are extra children, we don't want them to occupy
* the space where we draw the resize grip, so we temporarily
* shrink the allocation.
* If there are no extra children, we want the frame to get
* the full allocation, and we fix up the allocation of the
* label afterwards to make room for the grip.
*/
if (extra_children)
{
allocation->width -= rect.width;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
allocation->x += rect.width;
}
}
/* chain up normally */
GTK_WIDGET_CLASS (gtk_statusbar_parent_class)->size_allocate (widget, allocation);
if (statusbar->has_resize_grip)
{
if (extra_children)
{
allocation->width += rect.width;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
allocation->x -= rect.width;
widget->allocation = *allocation;
}
else
{
GtkWidget *child;
/* Use the frame's child instead of statusbar->label directly, in case
* the label has been replaced by a container as the frame's child
* (and the label reparented into that container).
*/
child = gtk_bin_get_child (GTK_BIN (statusbar->frame));
if (child->allocation.width + rect.width > statusbar->frame->allocation.width)
{
/* shrink the label to make room for the grip */
*allocation = child->allocation;
allocation->width = MAX (1, allocation->width - rect.width);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
allocation->x += child->allocation.width - allocation->width;
gtk_widget_size_allocate (child, allocation);
}
}
if (statusbar->grip_window)
{
get_grip_rect (statusbar, &rect);
gdk_window_raise (statusbar->grip_window);
gdk_window_move_resize (statusbar->grip_window,
rect.x, rect.y,
rect.width, rect.height);
}
}
}
static void
label_selectable_changed (GtkWidget *label,
GParamSpec *pspec,
gpointer data)
{
GtkStatusbar *statusbar = GTK_STATUSBAR (data);
if (statusbar &&
statusbar->has_resize_grip && statusbar->grip_window)
gdk_window_raise (statusbar->grip_window);
}
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