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/* A slider with an entry widget.
*/
/*
Copyright (C) 1991-2003 The National Gallery
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#define TYPE_TSLIDER (tslider_get_type())
#define TSLIDER( obj ) (GTK_CHECK_CAST( (obj), TYPE_TSLIDER, Tslider ))
#define TSLIDER_CLASS( klass ) \
(GTK_CHECK_CLASS_CAST( (klass), TYPE_TSLIDER, TsliderClass ))
#define IS_TSLIDER( obj ) (GTK_CHECK_TYPE( (obj), TYPE_TSLIDER ))
#define IS_TSLIDER_CLASS( klass ) \
(GTK_CHECK_CLASS_TYPE( (klass), TYPE_TSLIDER ))
typedef double (*tslider_fn)( double from, double to, double value );
typedef struct _Tslider {
GtkHBox parent_class;
/* Our state.
*/
double from;
double to;
double value; /* Real value, as displayed in text */
double svalue; /* Slider value ... secret linear scale */
int digits; /* How many sf to display */
/* Keep last from/to/value settings here. Can't
* use from/to since double and float don't compare reliably.
*/
double last_from, last_to, last_svalue;
GtkWidget *entry;
GtkWidget *slider;
GtkAdjustment *adj;
/* Optional functions ... how to make a value from a slider
* position, how to make a slider position from a value.
* If these are defined, text and slider are linked for you.
*/
gboolean auto_link;
tslider_fn value_to_slider;
tslider_fn slider_to_value;
/* Ignore scroll events. In workspaces, we want the scroll-wheel to
* just scroll the workspace and not adjust sliders.
*/
gboolean ignore_scroll;
} Tslider;
typedef struct _TsliderClass {
GtkHBoxClass parent_class;
void (*changed)( Tslider * ); /* from/to/value change */
void (*activate)( Tslider * ); /* enter in text */
void (*slider_changed)( Tslider * ); /* slider drag */
void (*text_changed)( Tslider * ); /* text has been touched */
} TsliderClass;
void tslider_changed( Tslider * );
GtkType tslider_get_type( void );
Tslider *tslider_new( void );
void tslider_set_conversions( Tslider *tslider,
tslider_fn value_to_slider, tslider_fn slider_to_value );
double tslider_log_value_to_slider( double from, double to, double value );
double tslider_log_slider_to_value( double from, double to, double value );
void tslider_set_ignore_scroll( Tslider *tslider, gboolean ignore_scroll );
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