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/**************************************************************
cmpack_preview.h (C-Munipack project)
Widget which can draw a text, graph, chart or image
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_preview.h,v 1.1 2015/07/12 08:32:30 dmotl Exp $
**************************************************************/
#ifndef CMPACK_PREVIEW_H
#define CMPACK_PREVIEW_H
#include <gtk/gtk.h>
#include "cmpack_widgdefs.h"
G_BEGIN_DECLS
#define CMPACK_TYPE_PREVIEW (cmpack_preview_get_type ())
#define CMPACK_PREVIEW(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CMPACK_TYPE_PREVIEW, CmpackPreview))
#define CMPACK_PREVIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CMPACK_TYPE_PREVIEW, CmpackPreviewClass))
#define CMPACK_IS_PREVIEW(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CMPACK_TYPE_PREVIEW))
#define CMPACK_IS_PREVIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CMPACK_TYPE_PREVIEW))
#define CMPACK_PREVIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CMPACK_TYPE_PREVIEW, CmpackPreviewClass))
typedef struct _CmpackPreview CmpackPreview;
typedef struct _CmpackPreviewClass CmpackPreviewClass;
/* Mapping parameters */
typedef struct _CmpackPreviewAxis
{
gdouble Min, Max; // Scroll limits in chart units
gdouble ProjMin, ProjMax; // Scroll limits in projection units
gdouble ProjEps; // Minimum viewfield in projection units
gboolean Log, Reverse; // Logarithmic scale, flip axis direction
} CmpackPreviewAxis;
typedef struct _CmpackPreviewItem
{
gboolean valid; // Is this item valid?
gboolean filled; // Filled marker
gboolean topmost; // Topmost item
gdouble xproj, yproj; // Object's center in projection units
gdouble size; // Position and size of the marker
CmpackColor color;
} CmpackPreviewItem;
/* Chart view */
struct _CmpackPreview
{
GtkWidget parent;
/* Private data */
gboolean dirty;
GdkPixmap *offscreen_pixmap;
GObject *model;
gint width, height;
gchar *text;
CmpackOrientation image_orientation;
CmpackPreviewItem *items;
gint item_count, item_capacity;
CmpackPreviewAxis x, y; // Axis parameters
gboolean negative; // Negative chart
GdkColor *int_colors;
};
/* Chart view class */
struct _CmpackPreviewClass
{
GtkWidgetClass parent_class;
};
GType cmpack_preview_get_type(void) G_GNUC_CONST;
/* ------------------------- PUBLIC FUNCTIONS --------------------------------- */
/* Create a new chart view (makes a new data model)
* Returns floating reference to the chart view
*/
GtkWidget *cmpack_preview_new(void);
/* Create a new chart view and link it to given data model
* params:
* chart_data - [in] data model
* Returns floating reference to the chart view
*/
GtkWidget *cmpack_preview_new_with_model(GObject *model);
/* Change the data model which the view is connected to
* params:
* preview - [in] chart view
* chart_data - [in] new data model
*/
void cmpack_preview_set_model(CmpackPreview *preview, GObject *model);
/* Get the data model with the view is connected to
* params:
* preview - [in] chart view
* Returns borrowed reference to the current data model
*/
GObject* cmpack_preview_get_model(CmpackPreview *preview);
/* Change the image model which the view is connected to
* params:
* preview - [in] chart view
* chart_data - [in] new data model
*/
void cmpack_preview_set_text(CmpackPreview *preview, const char *text);
/* Set mapping direction
* params:
* chart_view - [in] chart view
* flip_x - [in] direction for x axis
* flip_y - [in] direction for y axis
*/
void cmpack_preview_set_image_orientation(CmpackPreview *view, CmpackOrientation orientation);
/* Set mapping direction
* params:
* preview - [in] preview
* flip_x - [in] direction for x axis
* flip_y - [in] direction for y axis
*/
void cmpack_preview_set_x_axis(CmpackPreview *view,
gboolean log_scale, gboolean reverse, gdouble min, gdouble max, gdouble eps);
void cmpack_preview_set_y_axis(CmpackPreview *view,
gboolean log_scale, gboolean reverse, gdouble min, gdouble max, gdouble eps);
/* Set drawing style (valid for chart only)
* params:
* preview - [in] preview
* mode - [in] new drawing style
*/
void cmpack_preview_set_negative(CmpackPreview *view, gboolean negative);
/* Get drawing style (valid for chart only)
* params:
* preview - [in] preview
* Returns TRUE of FALSE
*/
gboolean cmpack_preview_get_negative(CmpackPreview *view);
G_END_DECLS
#endif
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