/* GTK - The GIMP Toolkit
*
* Copyright (C) 2003 Sun Microsystems, Inc.
*
* 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.
*
* Authors:
* Mark McLoughlin <mark@skynet.ie>
*/
#include <config.h>
#include "e-expander.h"
#include <gtk/gtklabel.h>
#include <gtk/gtkcontainer.h>
#include <gdk/gdkkeysyms.h>
#define DEFAULT_EXPANDER_SIZE 10
#define DEFAULT_EXPANDER_SPACING 2
/* ESTUFF */
#ifndef _
#define _(x) (x)
#endif
#define E_EXPANDER_GET_PRIVATE(expander) ((EExpanderPrivate *)g_object_get_data (G_OBJECT (expander), "e-expander-priv"))
enum {
PROP_0,
PROP_EXPANDED,
PROP_LABEL,
PROP_USE_UNDERLINE,
PROP_PADDING,
PROP_LABEL_WIDGET
};
typedef struct {
GtkWidget *label_widget;
gint spacing;
GtkExpanderStyle expander_style;
guint animation_timeout;
guint expanded : 1;
guint use_underline : 1;
guint button_down : 1;
} EExpanderPrivate;
static void e_expander_class_init (EExpanderClass *klass);
static void e_expander_init (EExpander *expander);
static void e_expander_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void e_expander_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void e_expander_destroy (GtkObject *object);
static void e_expander_realize (GtkWidget *widget);
static void e_expander_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void e_expander_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void e_expander_map (GtkWidget *widget);
static gboolean e_expander_expose (GtkWidget *widget,
GdkEventExpose *event);
static gboolean e_expander_button_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean e_expander_button_release (GtkWidget *widget,
GdkEventButton *event);
static gboolean e_expander_motion_notify (GtkWidget *widget,
GdkEventMotion *event);
static gboolean e_expander_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean e_expander_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean e_expander_focus (GtkWidget *widget,
GtkDirectionType direction);
static void e_expander_add (GtkContainer *container,
GtkWidget *widget);
static void e_expander_remove (GtkContainer *container,
GtkWidget *widget);
static void e_expander_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void e_expander_activate (EExpander *expander);
static GtkBinClass *parent_class = NULL;
GType
e_expander_get_type (void)
{
static GType expander_type = 0;
if (!expander_type)
{
static const GTypeInfo expander_info =
{
sizeof (EExpanderClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) e_expander_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (EExpander),
0, /* n_preallocs */
(GInstanceInitFunc) e_expander_init,
};
expander_type = g_type_register_static (GTK_TYPE_BIN,
"EExpander",
&expander_info, 0);
}
return expander_type;
}
static void
e_expander_class_init (EExpanderClass *klass)
{
GObjectClass *gobject_class;
GtkObjectClass *gtkobject_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
parent_class = g_type_class_peek_parent (klass);
gobject_class = (GObjectClass *) klass;
gtkobject_class = (GtkObjectClass *) klass;
widget_class = (GtkWidgetClass *) klass;
container_class = (GtkContainerClass *) klass;
gobject_class->set_property = e_expander_set_property;
gobject_class->get_property = e_expander_get_property;
gtkobject_class->destroy = e_expander_destroy;
widget_class->realize = e_expander_realize;
widget_class->size_request = e_expander_size_request;
widget_class->size_allocate = e_expander_size_allocate;
widget_class->map = e_expander_map;
widget_class->expose_event = e_expander_expose;
widget_class->button_press_event = e_expander_button_press;
widget_class->button_release_event = e_expander_button_release;
widget_class->motion_notify_event = e_expander_motion_notify;
widget_class->enter_notify_event = e_expander_enter_notify;
widget_class->leave_notify_event = e_expander_leave_notify;
widget_class->focus = e_expander_focus;
container_class->add = e_expander_add;
container_class->remove = e_expander_remove;
container_class->forall = e_expander_forall;
klass->activate = e_expander_activate;
/* ESTUFF g_type_class_add_private (klass, sizeof (EExpanderPrivate)); */
g_object_class_install_property (gobject_class,
PROP_EXPANDED,
g_param_spec_boolean ("expanded",
_("Expanded"),
_("Whether or not the expander is expanded"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property (gobject_class,
PROP_LABEL,
g_param_spec_string ("label",
_("Label"),
_("Text of the expander's label"),
NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property (gobject_class,
PROP_USE_UNDERLINE,
g_param_spec_boolean ("use_underline",
_("Use underline"),
_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"),
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
g_object_class_install_property (gobject_class,
PROP_PADDING,
g_param_spec_int ("spacing",
_("Spacing"),
_("Space to put between the label and the child"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_LABEL_WIDGET,
g_param_spec_object ("label_widget",
_("Label widget"),
_("A widget to display in place of the usual expander label"),
GTK_TYPE_WIDGET,
G_PARAM_READWRITE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("expander-size",
_("Expander Size"),
_("Size of the expander arrow"),
0,
G_MAXINT,
DEFAULT_EXPANDER_SIZE,
G_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("expander-spacing",
_("Indicator Spacing"),
_("Spacing around expander arrow"),
0,
G_MAXINT,
DEFAULT_EXPANDER_SPACING,
G_PARAM_READABLE));
widget_class->activate_signal =
g_signal_new ("activate",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (EExpanderClass, activate),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
e_expander_init (EExpander *expander)
{
EExpanderPrivate *priv;
/* ESTUFF */
priv = g_new0 (EExpanderPrivate, 1);
g_object_set_data_full (G_OBJECT (expander), "e-expander-priv", priv, g_free);
/* ESTUFF priv = E_EXPANDER_GET_PRIVATE (expander); */
GTK_WIDGET_SET_FLAGS (expander, GTK_CAN_FOCUS);
GTK_WIDGET_UNSET_FLAGS (expander, GTK_NO_WINDOW);
priv->label_widget = 0;
priv->spacing = 0;
priv->expander_style = GTK_EXPANDER_COLLAPSED;
priv->animation_timeout = 0;
priv->expanded = FALSE;
priv->use_underline = FALSE;
priv->button_down = FALSE;
}
static void
e_expander_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
EExpander *expander = E_EXPANDER (object);
switch (prop_id)
{
case PROP_EXPANDED:
e_expander_set_expanded (expander, g_value_get_boolean (value));
break;
case PROP_LABEL:
e_expander_set_label (expander, g_value_get_string (value));
break;
case PROP_USE_UNDERLINE:
e_expander_set_use_underline (expander, g_value_get_boolean (value));
break;
case PROP_PADDING:
e_expander_set_spacing (expander, g_value_get_int (value));
break;
case PROP_LABEL_WIDGET:
e_expander_set_label_widget (expander, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
e_expander_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
EExpander *expander = E_EXPANDER (object);
EExpanderPrivate *priv;
priv = E_EXPANDER_GET_PRIVATE (expander);
switch (prop_id)
{
case PROP_EXPANDED:
g_value_set_boolean (value, priv->expanded);
break;
case PROP_LABEL:
g_value_set_string (value, e_expander_get_label (expander));
break;
case PROP_USE_UNDERLINE:
g_value_set_boolean (value, priv->use_underline);
break;
case PROP_PADDING:
g_value_set_int (value, priv->spacing);
break;
case PROP_LABEL_WIDGET:
g_value_set_object (value,
priv->label_widget ?
G_OBJECT (priv->label_widget) : NULL);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
e_expander_destroy (GtkObject *object)
{
EExpander *expander = E_EXPANDER (object);
EExpanderPrivate *priv;
priv = E_EXPANDER_GET_PRIVATE (expander);
if (priv->animation_timeout)
g_source_remove (priv->animation_timeout);
priv->animation_timeout = 0;
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
e_expander_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
gint border_width;
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
border_width = GTK_CONTAINER (widget)->border_width;
attributes.x = widget->allocation.x + border_width;
attributes.y = widget->allocation.y + border_width;
attributes.width = widget->allocation.width - 2 * border_width;
attributes.height = widget->allocation.height - 2 * border_width;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget) |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_EXPOSURE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}
static void
e_expander_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
EExpander *expander;
GtkBin *bin;
EExpanderPrivate *priv;
gint border_width;
gint expander_size;
gint expander_spacing;
gboolean interior_focus;
gint focus_width;
gint focus_pad;
expander = E_EXPANDER (widget);
bin = GTK_BIN (widget);
priv = E_EXPANDER_GET_PRIVATE (expander);
border_width = GTK_CONTAINER (widget)->border_width;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
"focus-padding", &focus_pad,
"expander-size", &expander_size,
"expander-spacing", &expander_spacing,
NULL);
requisition->width = expander_size + 2 * expander_spacing +
2 * focus_width + 2 * focus_pad;
requisition->height = interior_focus ? (2 * focus_width + 2 * focus_pad) : 0;
if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget))
{
GtkRequisition label_requisition;
gtk_widget_size_request (priv->label_widget, &label_requisition);
requisition->width += label_requisition.width;
requisition->height += label_requisition.height;
}
requisition->height = MAX (expander_size + 2 * expander_spacing, requisition->height);
if (!interior_focus)
requisition->height += 2 * focus_width + 2 * focus_pad;
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
GtkRequisition child_requisition;
gtk_widget_size_request (bin->child, &child_requisition);
if (!interior_focus)
child_requisition.width += 2 * focus_width + 2 * focus_pad;
requisition->width = MAX (requisition->width, child_requisition.width);
requisition->height += child_requisition.height + priv->spacing;
}
requisition->width += 2 * border_width;
requisition->height += 2 * border_width + 2 * priv->spacing;
}
static void
e_expander_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
EExpander *expander;
GtkBin *bin;
EExpanderPrivate *priv;
GtkRequisition child_requisition;
gboolean child_visible = FALSE;
gint border_width;
gint expander_size;
gint expander_spacing;
gboolean interior_focus;
gint focus_width;
gint focus_pad;
gint label_height;
expander = E_EXPANDER (widget);
bin = GTK_BIN (widget);
priv = E_EXPANDER_GET_PRIVATE (expander);
border_width = GTK_CONTAINER (widget)->border_width;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
"focus-padding", &focus_pad,
"expander-size", &expander_size,
"expander-spacing", &expander_spacing,
NULL);
child_requisition.width = 0;
child_requisition.height = 0;
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
child_visible = TRUE;
gtk_widget_get_child_requisition (bin->child, &child_requisition);
}
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (widget->window,
allocation->x + border_width,
allocation->y + border_width,
MAX (allocation->width - 2 * border_width, 0),
MAX (allocation->height - 2 * border_width, 0));
if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget))
{
GtkAllocation label_allocation;
GtkRequisition label_requisition;
gboolean ltr;
gtk_widget_get_child_requisition (priv->label_widget, &label_requisition);
ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
label_allocation.x = focus_width + focus_pad;
if (ltr)
label_allocation.x += expander_size + 2 * expander_spacing;
label_allocation.y = priv->spacing + focus_width + focus_pad;
label_allocation.width = MIN (label_requisition.width,
allocation->width - 2 * border_width -
expander_size - 2 * expander_spacing -
2 * focus_width - 2 * focus_pad);
label_allocation.width = MAX (label_allocation.width, 1);
label_allocation.height = MIN (label_requisition.height,
allocation->height - 2 * border_width -
2 * priv->spacing -
2 * focus_width - 2 * focus_pad -
child_requisition.height -
(child_visible ? priv->spacing : 0));
label_allocation.height = MAX (label_allocation.height, 1);
gtk_widget_size_allocate (priv->label_widget, &label_allocation);
label_height = label_allocation.height;
}
else
{
label_height = 0;
}
if (child_visible)
{
GtkAllocation child_allocation;
gint top_height;
top_height = MAX (2 * expander_spacing + expander_size,
label_height +
(interior_focus ? 2 * focus_width + 2 * focus_pad : 0));
child_allocation.x = 0;
child_allocation.y = 2 * priv->spacing + top_height;
if (!interior_focus)
{
child_allocation.x += focus_width + focus_pad;
child_allocation.y += focus_width + focus_pad;
}
child_allocation.width = allocation->width - 2 * border_width -
(!interior_focus ? 2 * focus_width + 2 * focus_pad : 0);
child_allocation.width = MAX (child_allocation.width, 1);
child_allocation.height = allocation->height - top_height -
2 * border_width -
3 * priv->spacing -
(!interior_focus ? 2 * focus_width + 2 * focus_pad : 0);
child_allocation.height = MAX (child_allocation.height, 1);
gtk_widget_size_allocate (bin->child, &child_allocation);
}
}
static void
e_expander_map (GtkWidget *widget)
{
EExpanderPrivate *priv;
priv = E_EXPANDER_GET_PRIVATE (widget);
if (priv->label_widget)
gtk_widget_map (priv->label_widget);
GTK_WIDGET_CLASS (parent_class)->map (widget);
}
static GdkRectangle
get_expander_bounds (EExpander *expander)
{
GtkWidget *widget;
GtkBin *bin;
EExpanderPrivate *priv;
GdkRectangle bounds;
gint border_width;
gint expander_size;
gint expander_spacing;
gboolean interior_focus;
gint focus_width;
gint focus_pad;
gboolean ltr;
widget = GTK_WIDGET (expander);
bin = GTK_BIN (expander);
priv = E_EXPANDER_GET_PRIVATE (expander);
border_width = GTK_CONTAINER (expander)->border_width;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
"focus-padding", &focus_pad,
"expander-size", &expander_size,
"expander-spacing", &expander_spacing,
NULL);
ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
if (ltr)
bounds.x = expander_spacing;
else
bounds.x = widget->allocation.width - 2 * border_width -
expander_spacing - expander_size;
if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget))
{
GtkAllocation label_allocation;
label_allocation = priv->label_widget->allocation;
if (expander_size < label_allocation.height)
bounds.y = label_allocation.y + (label_allocation.height - expander_size) / 2;
else
bounds.y = priv->spacing + expander_spacing;
}
else
{
bounds.y = priv->spacing + expander_spacing;
}
if (!interior_focus)
{
if (ltr)
bounds.x += focus_width + focus_pad;
else
bounds.x -= focus_width + focus_pad;
bounds.y += focus_width + focus_pad;
}
bounds.width = bounds.height = expander_size;
return bounds;
}
static void
e_expander_paint (EExpander *expander)
{
GtkWidget *widget;
EExpanderPrivate *priv;
gint x, y;
GtkStateType state;
GdkRectangle clip;
widget = GTK_WIDGET (expander);
priv = E_EXPANDER_GET_PRIVATE (expander);
clip = get_expander_bounds (expander);
x = clip.x + clip.width / 2;
y = clip.y + clip.height / 2;
state = widget->state;
if (state != GTK_STATE_PRELIGHT)
state = GTK_STATE_NORMAL;
gtk_paint_expander (widget->style,
widget->window,
state,
&clip,
widget,
"expander",
x,
y,
priv->expander_style);
}
static void
e_expander_paint_focus (EExpander *expander,
GdkRectangle *area)
{
GtkWidget *widget;
EExpanderPrivate *priv;
gint x, y, width, height;
gboolean interior_focus;
gint focus_width;
gint focus_pad;
gint expander_size;
gint expander_spacing;
gboolean ltr;
widget = GTK_WIDGET (expander);
priv = E_EXPANDER_GET_PRIVATE (expander);
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
"focus-padding", &focus_pad,
"expander-size", &expander_size,
"expander-spacing", &expander_spacing,
NULL);
ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
if (interior_focus)
{
if (ltr)
x = expander_spacing * 2 + expander_size;
else
x = 0;
y = priv->spacing;
width = height = 2 * focus_pad + 2 * focus_width;
if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget))
{
GtkAllocation label_allocation = priv->label_widget->allocation;
width += label_allocation.width;
height += label_allocation.height;
}
}
else
{
x = y = 0;
width = widget->allocation.width - 2 * GTK_CONTAINER (widget)->border_width;
height = widget->allocation.height - 2 * GTK_CONTAINER (widget)->border_width;
}
gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
area, widget, "expander",
x, y, width, height);
}
static gboolean
e_expander_expose (GtkWidget *widget,
GdkEventExpose *event)
{
if (GTK_WIDGET_DRAWABLE (widget))
{
EExpander *expander = E_EXPANDER (widget);
EExpanderPrivate *priv;
priv = E_EXPANDER_GET_PRIVATE (expander);
e_expander_paint (expander);
if (GTK_WIDGET_HAS_FOCUS (expander))
e_expander_paint_focus (expander, &event->area);
if (priv->label_widget)
gtk_container_propagate_expose (GTK_CONTAINER (widget),
priv->label_widget,
event);
GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
}
return FALSE;
}
static gboolean
is_in_expander_panel (EExpander *expander,
GdkWindow *window,
gint x,
gint y)
{
GtkWidget *widget;
GtkBin *bin;
GdkRectangle area;
gint border_width;
widget = GTK_WIDGET (expander);
bin = GTK_BIN (expander);
border_width = GTK_CONTAINER (expander)->border_width;
area = get_expander_bounds (expander);
area.x = 0;
area.width = widget->allocation.width;
if (widget->window == window)
{
if (x >= area.x && x <= (area.x + area.width) &&
y >= area.y && y <= (area.y + area.height))
return TRUE;
}
return FALSE;
}
static gboolean
e_expander_button_press (GtkWidget *widget,
GdkEventButton *event)
{
EExpander *expander = E_EXPANDER (widget);
EExpanderPrivate *priv;
priv = E_EXPANDER_GET_PRIVATE (expander);
if (event->button == 1 && !priv->button_down)
{
if (is_in_expander_panel (expander, event->window, event->x, event->y))
{
priv->button_down = TRUE;
return TRUE;
}
}
return FALSE;
}
static gboolean
e_expander_button_release (GtkWidget *widget,
GdkEventButton *event)
{
EExpander *expander = E_EXPANDER (widget);
EExpanderPrivate *priv;
priv = E_EXPANDER_GET_PRIVATE (expander);
if (event->button == 1 && priv->button_down)
{
g_signal_emit_by_name (expander, "activate");
priv->button_down = FALSE;
return TRUE;
}
return FALSE;
}
static void
e_expander_maybe_prelight (EExpander *expander)
{
GtkWidget *widget;
EExpanderPrivate *priv;
GtkStateType state = GTK_STATE_NORMAL;
widget = GTK_WIDGET (expander);
priv = E_EXPANDER_GET_PRIVATE (expander);
if (!priv->button_down)
{
gint x, y;
gdk_window_get_pointer (widget->window, &x, &y, NULL);
if (is_in_expander_panel (expander, widget->window, x, y))
state = GTK_STATE_PRELIGHT;
}
gtk_widget_set_state (widget, state);
}
static gboolean
e_expander_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
e_expander_maybe_prelight (E_EXPANDER (widget));
return FALSE;
}
static gboolean
e_expander_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
e_expander_maybe_prelight (E_EXPANDER (widget));
return FALSE;
}
static gboolean
e_expander_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
gtk_widget_set_state (widget, GTK_STATE_NORMAL);
return FALSE;
}
static gboolean
focus_child_in (GtkWidget *widget,
GtkDirectionType direction)
{
GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
if (!child)
return FALSE;
return gtk_widget_child_focus (child, direction);
}
static gboolean
e_expander_focus (GtkWidget *widget,
GtkDirectionType direction)
{
EExpanderPrivate *priv;
GtkWidget *old_focus_child;
gboolean widget_is_focus;
gboolean label_can_focus;
priv = E_EXPANDER_GET_PRIVATE (widget);
widget_is_focus = gtk_widget_is_focus (widget);
old_focus_child = GTK_CONTAINER (widget)->focus_child;
label_can_focus = priv->label_widget && GTK_WIDGET_CAN_FOCUS (priv->label_widget);
if (old_focus_child && old_focus_child == priv->label_widget)
{
switch (direction)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_LEFT:
case GTK_DIR_UP:
gtk_widget_grab_focus (widget);
return TRUE;
case GTK_DIR_DOWN:
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_RIGHT:
return focus_child_in (widget, direction);
}
}
else if (old_focus_child)
{
if (gtk_widget_child_focus (old_focus_child, direction))
return TRUE;
switch (direction)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_LEFT:
case GTK_DIR_UP:
if (label_can_focus)
gtk_widget_grab_focus (priv->label_widget);
else
gtk_widget_grab_focus (widget);
return TRUE;
case GTK_DIR_DOWN:
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_RIGHT:
return FALSE;
}
}
else if (widget_is_focus)
{
switch (direction)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_LEFT:
case GTK_DIR_UP:
return FALSE;
case GTK_DIR_DOWN:
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_RIGHT:
if (label_can_focus)
{
gtk_widget_grab_focus (priv->label_widget);
return TRUE;
}
return focus_child_in (widget, direction);
}
}
else
{
switch (direction)
{
case GTK_DIR_DOWN:
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_TAB_BACKWARD:
gtk_widget_grab_focus (widget);
return TRUE;
case GTK_DIR_UP:
case GTK_DIR_LEFT:
case GTK_DIR_RIGHT:
if (!focus_child_in (widget, direction))
{
gtk_widget_grab_focus (widget);
}
return TRUE;
}
}
g_assert_not_reached ();
return FALSE;
}
static void
e_expander_add (GtkContainer *container,
GtkWidget *widget)
{
GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
g_object_set (G_OBJECT (widget),
"visible", E_EXPANDER_GET_PRIVATE (container)->expanded,
NULL);
}
static void
e_expander_remove (GtkContainer *container,
GtkWidget *widget)
{
EExpander *expander = E_EXPANDER (container);
if (E_EXPANDER_GET_PRIVATE (expander)->label_widget == widget)
e_expander_set_label_widget (expander, NULL);
else
GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
}
static void
e_expander_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkBin *bin = GTK_BIN (container);
EExpanderPrivate *priv;
priv = E_EXPANDER_GET_PRIVATE (container);
if (bin->child)
(* callback) (bin->child, callback_data);
if (priv->label_widget)
(* callback) (priv->label_widget, callback_data);
}
static void
e_expander_activate (EExpander *expander)
{
e_expander_set_expanded (expander,
!E_EXPANDER_GET_PRIVATE (expander)->expanded);
}
GtkWidget *
e_expander_new (const gchar *label)
{
return g_object_new (E_TYPE_EXPANDER, "label", label, NULL);
}
GtkWidget *
e_expander_new_with_mnemonic (const gchar *label)
{
return g_object_new (E_TYPE_EXPANDER,
"label", label,
"use_underline", TRUE,
NULL);
}
static gboolean
e_expander_animation_timeout (EExpander *expander)
{
EExpanderPrivate *priv;
GdkRectangle area;
gboolean finish = FALSE;
priv = E_EXPANDER_GET_PRIVATE (expander);
if (GTK_WIDGET_REALIZED (expander))
{
area = get_expander_bounds (expander);
gdk_window_invalidate_rect (GTK_WIDGET (expander)->window, &area, TRUE);
}
if (priv->expanded)
{
if (priv->expander_style == GTK_EXPANDER_COLLAPSED)
{
priv->expander_style = GTK_EXPANDER_SEMI_EXPANDED;
}
else
{
priv->expander_style = GTK_EXPANDER_EXPANDED;
finish = TRUE;
}
}
else
{
if (priv->expander_style == GTK_EXPANDER_EXPANDED)
{
priv->expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
}
else
{
priv->expander_style = GTK_EXPANDER_COLLAPSED;
finish = TRUE;
}
}
if (finish)
{
priv->animation_timeout = 0;
g_object_set (G_OBJECT (GTK_BIN (expander)->child),
"visible", priv->expanded,
NULL);
}
return !finish;
}
static void
e_expander_start_animation (EExpander *expander)
{
EExpanderPrivate *priv;
priv = E_EXPANDER_GET_PRIVATE (expander);
if (priv->animation_timeout)
g_source_remove (priv->animation_timeout);
priv->animation_timeout =
g_timeout_add (50,
(GSourceFunc) e_expander_animation_timeout,
expander);
}
void
e_expander_set_expanded (EExpander *expander,
gboolean expanded)
{
EExpanderPrivate *priv;
g_return_if_fail (E_IS_EXPANDER (expander));
priv = E_EXPANDER_GET_PRIVATE (expander);
expanded = expanded != FALSE;
if (priv->expanded != expanded)
{
priv->expanded = expanded;
if (GTK_WIDGET_VISIBLE (expander))
e_expander_start_animation (expander);
else if (GTK_BIN (expander)->child)
{
priv->expander_style = expanded ? GTK_EXPANDER_EXPANDED :
GTK_EXPANDER_COLLAPSED;
g_object_set (G_OBJECT (GTK_BIN (expander)->child),
"visible", priv->expanded,
NULL);
}
gtk_widget_queue_resize (GTK_WIDGET (expander));
g_object_notify (G_OBJECT (expander), "expanded");
}
}
gboolean
e_expander_get_expanded (EExpander *expander)
{
g_return_val_if_fail (E_IS_EXPANDER (expander), FALSE);
return E_EXPANDER_GET_PRIVATE (expander)->expanded;
}
void
e_expander_set_spacing (EExpander *expander,
gint spacing)
{
EExpanderPrivate *priv;
g_return_if_fail (E_IS_EXPANDER (expander));
g_return_if_fail (spacing >= 0);
priv = E_EXPANDER_GET_PRIVATE (expander);
if (priv->spacing != spacing)
{
priv->spacing = spacing;
gtk_widget_queue_resize (GTK_WIDGET (expander));
g_object_notify (G_OBJECT (expander), "spacing");
}
}
gint
e_expander_get_spacing (EExpander *expander)
{
g_return_val_if_fail (E_IS_EXPANDER (expander), 0);
return E_EXPANDER_GET_PRIVATE (expander)->spacing;
}
void
e_expander_set_label (EExpander *expander,
const gchar *label)
{
g_return_if_fail (E_IS_EXPANDER (expander));
if (!label)
{
e_expander_set_label_widget (expander, NULL);
}
else
{
GtkWidget *child;
child = gtk_label_new (label);
gtk_label_set_use_underline (GTK_LABEL (child),
E_EXPANDER_GET_PRIVATE (expander)->use_underline);
gtk_widget_show (child);
e_expander_set_label_widget (expander, child);
}
g_object_notify (G_OBJECT (expander), "label");
}
/**
* e_expander_get_label:
* @expander: a #EExpander
*
* If the expander's label widget is a #GtkLabel, return the
* text in the label widget. (The frame will have a #GtkLabel
* for the label widget if a non-%NULL argument was passed
* to e_expander_new().)
*
* Return value: the text in the label, or %NULL if there
* was no label widget or the lable widget was not
* a #GtkLabel. This string is owned by GTK+ and
* must not be modified or freed.
**/
G_CONST_RETURN char *
e_expander_get_label (EExpander *expander)
{
EExpanderPrivate *priv;
g_return_val_if_fail (E_IS_EXPANDER (expander), NULL);
priv = E_EXPANDER_GET_PRIVATE (expander);
if (priv->label_widget && GTK_IS_LABEL (priv->label_widget))
return gtk_label_get_text (GTK_LABEL (priv->label_widget));
else
return NULL;
}
void
e_expander_set_use_underline (EExpander *expander,
gboolean use_underline)
{
EExpanderPrivate *priv;
g_return_if_fail (E_IS_EXPANDER (expander));
priv = E_EXPANDER_GET_PRIVATE (expander);
use_underline = use_underline != FALSE;
if (priv->use_underline != use_underline)
{
priv->use_underline = use_underline;
if (priv->label_widget && GTK_IS_LABEL (priv->label_widget))
gtk_label_set_use_underline (GTK_LABEL (priv->label_widget), use_underline);
g_object_notify (G_OBJECT (expander), "use_underline");
}
}
gboolean
e_expander_get_use_underline (EExpander *expander)
{
g_return_val_if_fail (E_IS_EXPANDER (expander), FALSE);
return E_EXPANDER_GET_PRIVATE (expander)->use_underline;
}
/**
* e_expander_set_label_widget:
* @expander: a #EExpander
* @label_widget: the new label widget
*
* Set the label widget for the expander. This is the widget
* that will appear embedded alongside the expander arrow.
**/
void
e_expander_set_label_widget (EExpander *expander,
GtkWidget *label_widget)
{
EExpanderPrivate *priv;
gboolean need_resize = FALSE;
g_return_if_fail (E_IS_EXPANDER (expander));
g_return_if_fail (label_widget == NULL || GTK_IS_WIDGET (label_widget));
g_return_if_fail (label_widget == NULL || label_widget->parent == NULL);
priv = E_EXPANDER_GET_PRIVATE (expander);
if (priv->label_widget == label_widget)
return;
if (priv->label_widget)
{
need_resize = GTK_WIDGET_VISIBLE (priv->label_widget);
gtk_widget_unparent (priv->label_widget);
}
priv->label_widget = label_widget;
if (label_widget)
{
priv->label_widget = label_widget;
gtk_widget_set_parent (label_widget, GTK_WIDGET (expander));
need_resize |= GTK_WIDGET_VISIBLE (label_widget);
}
if (GTK_WIDGET_VISIBLE (expander) && need_resize)
gtk_widget_queue_resize (GTK_WIDGET (expander));
g_object_notify (G_OBJECT (expander), "label_widget");
}
/**
* e_expander_get_label_widget:
* @expander: a #EExpander
*
* Retrieves the label widget for the frame. See
* e_expander_set_label_widget().
*
* Return value: the label widget, or %NULL if there is none.
**/
GtkWidget *
e_expander_get_label_widget (EExpander *expander)
{
g_return_val_if_fail (E_IS_EXPANDER (expander), NULL);
return E_EXPANDER_GET_PRIVATE (expander)->label_widget;
}
