forked from AuroraMiddleware/gtk
346 lines
8.0 KiB
C
346 lines
8.0 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 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.
|
|
*/
|
|
|
|
/*
|
|
* Modified by the GTK+ Team and others 1997-1999. 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 <math.h>
|
|
#include "gtkcontainer.h"
|
|
#include "gtkscale.h"
|
|
|
|
|
|
#define SCALE_CLASS(w) GTK_SCALE_CLASS (GTK_OBJECT (w)->klass)
|
|
|
|
enum {
|
|
ARG_0,
|
|
ARG_DIGITS,
|
|
ARG_DRAW_VALUE,
|
|
ARG_VALUE_POS
|
|
};
|
|
|
|
|
|
static void gtk_scale_class_init (GtkScaleClass *klass);
|
|
static void gtk_scale_init (GtkScale *scale);
|
|
static void gtk_scale_set_arg (GtkObject *object,
|
|
GtkArg *arg,
|
|
guint arg_id);
|
|
static void gtk_scale_get_arg (GtkObject *object,
|
|
GtkArg *arg,
|
|
guint arg_id);
|
|
static void gtk_scale_map (GtkWidget *widget);
|
|
static void gtk_scale_unmap (GtkWidget *widget);
|
|
|
|
static void gtk_scale_draw_background (GtkRange *range);
|
|
|
|
|
|
static GtkRangeClass *parent_class = NULL;
|
|
|
|
|
|
GtkType
|
|
gtk_scale_get_type (void)
|
|
{
|
|
static GtkType scale_type = 0;
|
|
|
|
if (!scale_type)
|
|
{
|
|
static const GtkTypeInfo scale_info =
|
|
{
|
|
"GtkScale",
|
|
sizeof (GtkScale),
|
|
sizeof (GtkScaleClass),
|
|
(GtkClassInitFunc) gtk_scale_class_init,
|
|
(GtkObjectInitFunc) gtk_scale_init,
|
|
/* reserved_1 */ NULL,
|
|
/* reserved_2 */ NULL,
|
|
(GtkClassInitFunc) NULL,
|
|
};
|
|
|
|
scale_type = gtk_type_unique (GTK_TYPE_RANGE, &scale_info);
|
|
}
|
|
|
|
return scale_type;
|
|
}
|
|
|
|
static void
|
|
gtk_scale_class_init (GtkScaleClass *class)
|
|
{
|
|
GtkObjectClass *object_class;
|
|
GtkWidgetClass *widget_class;
|
|
GtkRangeClass *range_class;
|
|
|
|
object_class = (GtkObjectClass*) class;
|
|
range_class = (GtkRangeClass*) class;
|
|
widget_class = (GtkWidgetClass*) class;
|
|
|
|
parent_class = gtk_type_class (GTK_TYPE_RANGE);
|
|
|
|
gtk_object_add_arg_type ("GtkScale::digits",
|
|
GTK_TYPE_INT,
|
|
GTK_ARG_READWRITE,
|
|
ARG_DIGITS);
|
|
gtk_object_add_arg_type ("GtkScale::draw_value",
|
|
GTK_TYPE_BOOL,
|
|
GTK_ARG_READWRITE,
|
|
ARG_DRAW_VALUE);
|
|
gtk_object_add_arg_type ("GtkScale::value_pos",
|
|
GTK_TYPE_POSITION_TYPE,
|
|
GTK_ARG_READWRITE,
|
|
ARG_VALUE_POS);
|
|
|
|
object_class->set_arg = gtk_scale_set_arg;
|
|
object_class->get_arg = gtk_scale_get_arg;
|
|
|
|
widget_class->map = gtk_scale_map;
|
|
widget_class->unmap = gtk_scale_unmap;
|
|
|
|
range_class->draw_background = gtk_scale_draw_background;
|
|
|
|
class->slider_length = 31;
|
|
class->value_spacing = 2;
|
|
class->draw_value = NULL;
|
|
}
|
|
|
|
static void
|
|
gtk_scale_set_arg (GtkObject *object,
|
|
GtkArg *arg,
|
|
guint arg_id)
|
|
{
|
|
GtkScale *scale;
|
|
|
|
scale = GTK_SCALE (object);
|
|
|
|
switch (arg_id)
|
|
{
|
|
case ARG_DIGITS:
|
|
gtk_scale_set_digits (scale, GTK_VALUE_INT (*arg));
|
|
break;
|
|
case ARG_DRAW_VALUE:
|
|
gtk_scale_set_draw_value (scale, GTK_VALUE_BOOL (*arg));
|
|
break;
|
|
case ARG_VALUE_POS:
|
|
gtk_scale_set_value_pos (scale, GTK_VALUE_ENUM (*arg));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_scale_get_arg (GtkObject *object,
|
|
GtkArg *arg,
|
|
guint arg_id)
|
|
{
|
|
GtkScale *scale;
|
|
|
|
scale = GTK_SCALE (object);
|
|
|
|
switch (arg_id)
|
|
{
|
|
case ARG_DIGITS:
|
|
GTK_VALUE_INT (*arg) = GTK_RANGE (scale)->digits;
|
|
break;
|
|
case ARG_DRAW_VALUE:
|
|
GTK_VALUE_BOOL (*arg) = scale->draw_value;
|
|
break;
|
|
case ARG_VALUE_POS:
|
|
GTK_VALUE_ENUM (*arg) = scale->value_pos;
|
|
break;
|
|
default:
|
|
arg->type = GTK_TYPE_INVALID;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_scale_init (GtkScale *scale)
|
|
{
|
|
GTK_WIDGET_SET_FLAGS (scale, GTK_CAN_FOCUS);
|
|
GTK_WIDGET_SET_FLAGS (scale, GTK_NO_WINDOW);
|
|
GTK_RANGE (scale)->digits = 1;
|
|
scale->draw_value = TRUE;
|
|
scale->value_pos = GTK_POS_TOP;
|
|
}
|
|
|
|
static void
|
|
gtk_scale_map (GtkWidget *widget)
|
|
{
|
|
GtkRange *range;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_SCALE (widget));
|
|
|
|
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
|
|
range = GTK_RANGE (widget);
|
|
|
|
gdk_window_show (range->trough);
|
|
}
|
|
|
|
static void
|
|
gtk_scale_unmap (GtkWidget *widget)
|
|
{
|
|
GtkRange *range;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (GTK_IS_SCALE (widget));
|
|
|
|
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
|
|
range = GTK_RANGE (widget);
|
|
|
|
if (GTK_WIDGET_NO_WINDOW (widget))
|
|
gtk_widget_queue_clear (widget);
|
|
|
|
gdk_window_hide (range->trough);
|
|
}
|
|
|
|
void
|
|
gtk_scale_set_digits (GtkScale *scale,
|
|
gint digits)
|
|
{
|
|
g_return_if_fail (scale != NULL);
|
|
g_return_if_fail (GTK_IS_SCALE (scale));
|
|
|
|
digits = CLAMP (digits, -1, 16);
|
|
|
|
if (GTK_RANGE (scale)->digits != digits)
|
|
{
|
|
GTK_RANGE (scale)->digits = digits;
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (scale));
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_scale_set_draw_value (GtkScale *scale,
|
|
gboolean draw_value)
|
|
{
|
|
g_return_if_fail (scale != NULL);
|
|
g_return_if_fail (GTK_IS_SCALE (scale));
|
|
|
|
draw_value = draw_value != FALSE;
|
|
|
|
if (scale->draw_value != draw_value)
|
|
{
|
|
scale->draw_value = draw_value;
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (scale));
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_scale_set_value_pos (GtkScale *scale,
|
|
GtkPositionType pos)
|
|
{
|
|
g_return_if_fail (scale != NULL);
|
|
g_return_if_fail (GTK_IS_SCALE (scale));
|
|
|
|
if (scale->value_pos != pos)
|
|
{
|
|
scale->value_pos = pos;
|
|
|
|
if (GTK_WIDGET_VISIBLE (scale) && GTK_WIDGET_MAPPED (scale))
|
|
gtk_widget_queue_resize (GTK_WIDGET (scale));
|
|
}
|
|
}
|
|
|
|
gint
|
|
gtk_scale_get_value_width (GtkScale *scale)
|
|
{
|
|
GtkRange *range;
|
|
gchar buffer[128];
|
|
gfloat value;
|
|
gint temp;
|
|
gint return_val;
|
|
gint digits;
|
|
gint i, j;
|
|
|
|
g_return_val_if_fail (scale != NULL, 0);
|
|
g_return_val_if_fail (GTK_IS_SCALE (scale), 0);
|
|
|
|
return_val = 0;
|
|
if (scale->draw_value)
|
|
{
|
|
range = GTK_RANGE (scale);
|
|
|
|
value = ABS (range->adjustment->lower);
|
|
if (value == 0) value = 1;
|
|
digits = log10 (value) + 1;
|
|
if (digits > 13)
|
|
digits = 13;
|
|
|
|
i = 0;
|
|
if (range->adjustment->lower < 0)
|
|
buffer[i++] = '-';
|
|
for (j = 0; j < digits; j++)
|
|
buffer[i++] = '0';
|
|
if (GTK_RANGE (scale)->digits)
|
|
buffer[i++] = '.';
|
|
for (j = 0; j < GTK_RANGE (scale)->digits; j++)
|
|
buffer[i++] = '0';
|
|
buffer[i] = '\0';
|
|
|
|
return_val = gdk_string_measure (GTK_WIDGET (scale)->style->font, buffer);
|
|
|
|
value = ABS (range->adjustment->upper);
|
|
if (value == 0) value = 1;
|
|
digits = log10 (value) + 1;
|
|
if (digits > 13)
|
|
digits = 13;
|
|
|
|
i = 0;
|
|
if (range->adjustment->upper < 0)
|
|
buffer[i++] = '-';
|
|
for (j = 0; j < digits; j++)
|
|
buffer[i++] = '0';
|
|
if (GTK_RANGE (scale)->digits)
|
|
buffer[i++] = '.';
|
|
for (j = 0; j < GTK_RANGE (scale)->digits; j++)
|
|
buffer[i++] = '0';
|
|
buffer[i] = '\0';
|
|
|
|
temp = gdk_string_measure (GTK_WIDGET (scale)->style->font, buffer);
|
|
return_val = MAX (return_val, temp);
|
|
}
|
|
|
|
return return_val;
|
|
}
|
|
|
|
void
|
|
gtk_scale_draw_value (GtkScale *scale)
|
|
{
|
|
g_return_if_fail (scale != NULL);
|
|
g_return_if_fail (GTK_IS_SCALE (scale));
|
|
|
|
if (SCALE_CLASS (scale)->draw_value)
|
|
(* SCALE_CLASS (scale)->draw_value) (scale);
|
|
}
|
|
|
|
|
|
static void
|
|
gtk_scale_draw_background (GtkRange *range)
|
|
{
|
|
g_return_if_fail (range != NULL);
|
|
g_return_if_fail (GTK_IS_SCALE (range));
|
|
|
|
gtk_scale_draw_value (GTK_SCALE (range));
|
|
}
|