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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* nautilus-ellipsizing-label.c: Subclass of GtkLabel that ellipsizes the text.
Copyright (C) 2001 Eazel, Inc.
The Gnome 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.
The Gnome 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 the Gnome Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
Author: John Sullivan <sullivan@eazel.com>,
*/
#include <config.h>
#include "nautilus-ellipsizing-label.h"
#include "nautilus-gdk-font-extensions.h"
#include "nautilus-gtk-macros.h"
#include "nautilus-string.h"
struct NautilusEllipsizingLabelDetails
{
char *full_text;
};
static void nautilus_ellipsizing_label_initialize_class (NautilusEllipsizingLabelClass *class);
static void nautilus_ellipsizing_label_initialize (NautilusEllipsizingLabel *label);
static void real_destroy (GtkObject *object);
static void real_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void real_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void real_style_set (GtkWidget *widget,
GtkStyle *previous_style);
NAUTILUS_DEFINE_CLASS_BOILERPLATE (NautilusEllipsizingLabel, nautilus_ellipsizing_label, GTK_TYPE_LABEL)
static void
nautilus_ellipsizing_label_initialize_class (NautilusEllipsizingLabelClass *klass)
{
GtkWidgetClass *widget_class;
GtkObjectClass *object_class;
object_class = GTK_OBJECT_CLASS (klass);
widget_class = GTK_WIDGET_CLASS (klass);
object_class->destroy = real_destroy;
widget_class->size_request = real_size_request;
widget_class->size_allocate = real_size_allocate;
widget_class->style_set = real_style_set;
}
static void
nautilus_ellipsizing_label_initialize (NautilusEllipsizingLabel *label)
{
label->details = g_new0 (NautilusEllipsizingLabelDetails, 1);
}
static void
real_destroy (GtkObject *object)
{
NautilusEllipsizingLabel *label;
g_return_if_fail (NAUTILUS_IS_ELLIPSIZING_LABEL (object));
label = NAUTILUS_ELLIPSIZING_LABEL (object);
g_free (label->details->full_text);
g_free (label->details);
}
GtkWidget*
nautilus_ellipsizing_label_new (const char *string)
{
NautilusEllipsizingLabel *label;
label = gtk_type_new (NAUTILUS_TYPE_ELLIPSIZING_LABEL);
nautilus_ellipsizing_label_set_text (label, string);
return GTK_WIDGET (label);
}
static void
recompute_ellipsized_text (NautilusEllipsizingLabel *label, int width)
{
char *ellipsized_text;
if (label->details->full_text == NULL) {
ellipsized_text = NULL;
} else {
ellipsized_text = nautilus_string_ellipsize_start (label->details->full_text,
GTK_WIDGET (label)->style->font,
width);
}
gtk_label_set_text (GTK_LABEL (label), ellipsized_text);
g_free (ellipsized_text);
}
void
nautilus_ellipsizing_label_set_text (NautilusEllipsizingLabel *label,
const char *string)
{
g_return_if_fail (NAUTILUS_IS_ELLIPSIZING_LABEL (label));
if (nautilus_str_is_equal (string, label->details->full_text)) {
return;
}
g_free (label->details->full_text);
label->details->full_text = g_strdup (string);
recompute_ellipsized_text (label, GTK_WIDGET (label)->allocation.width);
}
static void
real_size_request (GtkWidget *widget, GtkRequisition *requisition)
{
NAUTILUS_CALL_PARENT (GTK_WIDGET_CLASS, size_request, (widget, requisition));
/* Don't demand any particular width; will draw ellipsized into whatever size we're given */
requisition->width = 0;
}
static void
real_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
{
recompute_ellipsized_text (NAUTILUS_ELLIPSIZING_LABEL (widget), allocation->width);
NAUTILUS_CALL_PARENT (GTK_WIDGET_CLASS, size_allocate, (widget, allocation));
}
static void
real_style_set (GtkWidget *widget, GtkStyle *previous_style)
{
recompute_ellipsized_text (NAUTILUS_ELLIPSIZING_LABEL (widget), widget->allocation.width);
NAUTILUS_CALL_PARENT (GTK_WIDGET_CLASS, style_set, (widget, previous_style));
}
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