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/**************************************************************
cmpack_scale.h (C-Munipack project)
Widget which can draw a gray scale or pseudocolor scale (derived from GtkWidget)
Copyright (C) 2011 David Motl, dmotl@volny.cz
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
$Id: cmpack_scale.h,v 1.1 2015/07/12 08:32:30 dmotl Exp $
**************************************************************/
#ifndef CMPACK_SCALE_H
#define CMPACK_SCALE_H
#include <gtk/gtk.h>
G_BEGIN_DECLS
#define CMPACK_TYPE_SCALE (cmpack_scale_get_type ())
#define CMPACK_SCALE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CMPACK_TYPE_SCALE, CmpackScale))
#define CMPACK_SCALE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CMPACK_TYPE_SCALE, CmpackScaleClass))
#define CMPACK_IS_SCALE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CMPACK_TYPE_SCALE))
#define CMPACK_IS_SCALE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CMPACK_TYPE_SCALE))
#define CMPACK_SCALE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CMPACK_TYPE_SCALE, CmpackScaleClass))
typedef struct _CmpackScale CmpackScale;
typedef struct _CmpackScaleClass CmpackScaleClass;
/* Graph view */
struct _CmpackScale
{
GtkWidget parent;
/* Private data */
gint width, height;
gboolean needs_repaint, needs_rebuild;
GdkPixmap *offscreen_pixmap;
GtkOrientation orientation;
gboolean pseudocolor, reverse;
gdouble min, max;
GdkRectangle scale_rc;
cairo_surface_t *scale_image; // Scale image
};
/* Graph view class */
struct _CmpackScaleClass
{
GtkWidgetClass parent_class;
};
GType cmpack_scale_get_type(void) G_GNUC_CONST;
/* ------------------------- PUBLIC FUNCTIONS --------------------------------- */
/* Create a new scale
* Returns floating reference to the scale
*/
GtkWidget *cmpack_scale_new(GtkOrientation orientation);
/* Change the orientation of the displayed scale
* params:
* scale - [in] scale
* type - [in] new scale type
*/
void cmpack_scale_set_orientation(CmpackScale *scale, GtkOrientation orientation);
/* Get current orientation of displayed scale
* params:
* scale - [in] scale
* Returns current scale type
*/
GtkOrientation cmpack_scale_get_orientation(CmpackScale *scale);
/* Change the type of the displayed scale
* params:
* scale - [in] scale
* type - [in] new scale type
*/
void cmpack_scale_set_pseudocolor(CmpackScale *scale, gboolean pseudocolor);
/* Get current type of displayed scale
* params:
* scale - [in] scale
* Returns current scale type
*/
gboolean cmpack_scale_get_pseudocolor(CmpackScale *scale);
/* Change the inversion flag of the scale
* params:
* scale - [in] scale
* type - [in] new scale type
*/
void cmpack_scale_set_invert(CmpackScale *scale, gboolean invert);
/* Get the state of the inversion flag
* params:
* scale - [in] scale
* Returns inversion flag
*/
gboolean cmpack_scale_get_invert(CmpackScale *scale);
/* Change the range of values
* params:
* scale - [in] scale
* min, max - [in] minimum and maximum value
*/
void cmpack_scale_set_range(CmpackScale *scale, gdouble min, gdouble max);
G_END_DECLS
#endif
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