gtk2/gtk/gtkadjustment.c
Owen Taylor 489c376bf4 Handle quoting of / with \; properly handle __ in paths, quote " and \n in
Mon Mar 19 15:53:36 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkitemfactory.c gtk/testgtk.c: Handle quoting of / with \; properly
	handle __ in paths, quote " and \n in gtk_item_factory_dump_items().

	* gtk/gtkadjustment.[ch] gtk/gtkclist.c gtk/gtkhruler.c gtk/gtklayout.c
	  gtk/gtklist.c gtk/gtkprogress.[ch] gtk/gtkprogressbar.[ch] gtk/gtkrange.[ch]
	  gtk/gtkruler.[ch] gtk/gtkscale.c gtk/gtkscrolledwindow.c gtk/gtkspinbutton.[ch]
	  gtk/gtktext.c gtk/gtktextview.c gtk/gtkvruler.c gtk/testgtk.c:
	Change float to double everywhere with the exception of 0<->1.0 alignment
	and GtkCurve.
2001-03-19 21:06:38 +00:00

193 lines
5.0 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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 "gtkadjustment.h"
#include "gtksignal.h"
enum {
CHANGED,
VALUE_CHANGED,
LAST_SIGNAL
};
static void gtk_adjustment_class_init (GtkAdjustmentClass *klass);
static void gtk_adjustment_init (GtkAdjustment *adjustment);
static guint adjustment_signals[LAST_SIGNAL] = { 0 };
GtkType
gtk_adjustment_get_type (void)
{
static GtkType adjustment_type = 0;
if (!adjustment_type)
{
static const GtkTypeInfo adjustment_info =
{
"GtkAdjustment",
sizeof (GtkAdjustment),
sizeof (GtkAdjustmentClass),
(GtkClassInitFunc) gtk_adjustment_class_init,
(GtkObjectInitFunc) gtk_adjustment_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
adjustment_type = gtk_type_unique (GTK_TYPE_OBJECT, &adjustment_info);
}
return adjustment_type;
}
static void
gtk_adjustment_class_init (GtkAdjustmentClass *class)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass*) class;
class->changed = NULL;
class->value_changed = NULL;
adjustment_signals[CHANGED] =
gtk_signal_new ("changed",
GTK_RUN_FIRST | GTK_RUN_NO_RECURSE,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkAdjustmentClass, changed),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
adjustment_signals[VALUE_CHANGED] =
gtk_signal_new ("value_changed",
GTK_RUN_FIRST | GTK_RUN_NO_RECURSE,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkAdjustmentClass, value_changed),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
}
static void
gtk_adjustment_init (GtkAdjustment *adjustment)
{
adjustment->value = 0.0;
adjustment->lower = 0.0;
adjustment->upper = 0.0;
adjustment->step_increment = 0.0;
adjustment->page_increment = 0.0;
adjustment->page_size = 0.0;
}
GtkObject*
gtk_adjustment_new (gdouble value,
gdouble lower,
gdouble upper,
gdouble step_increment,
gdouble page_increment,
gdouble page_size)
{
GtkAdjustment *adjustment;
adjustment = gtk_type_new (gtk_adjustment_get_type ());
adjustment->value = value;
adjustment->lower = lower;
adjustment->upper = upper;
adjustment->step_increment = step_increment;
adjustment->page_increment = page_increment;
adjustment->page_size = page_size;
return GTK_OBJECT (adjustment);
}
void
gtk_adjustment_set_value (GtkAdjustment *adjustment,
gdouble value)
{
g_return_if_fail (adjustment != NULL);
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
value = CLAMP (value, adjustment->lower, adjustment->upper);
if (value != adjustment->value)
{
adjustment->value = value;
gtk_adjustment_value_changed (adjustment);
}
}
void
gtk_adjustment_changed (GtkAdjustment *adjustment)
{
g_return_if_fail (adjustment != NULL);
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
gtk_signal_emit (GTK_OBJECT (adjustment), adjustment_signals[CHANGED]);
}
void
gtk_adjustment_value_changed (GtkAdjustment *adjustment)
{
g_return_if_fail (adjustment != NULL);
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
gtk_signal_emit (GTK_OBJECT (adjustment), adjustment_signals[VALUE_CHANGED]);
}
void
gtk_adjustment_clamp_page (GtkAdjustment *adjustment,
gdouble lower,
gdouble upper)
{
gboolean need_emission;
g_return_if_fail (adjustment != NULL);
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
lower = CLAMP (lower, adjustment->lower, adjustment->upper);
upper = CLAMP (upper, adjustment->lower, adjustment->upper);
need_emission = FALSE;
if (adjustment->value + adjustment->page_size < upper)
{
adjustment->value = upper - adjustment->page_size;
need_emission = TRUE;
}
if (adjustment->value > lower)
{
adjustment->value = lower;
need_emission = TRUE;
}
if (need_emission)
gtk_adjustment_value_changed (adjustment);
}