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/*
* ld-canvas.h
*
* This file is a part of logdiag.
* Copyright Přemysl Janouch 2010 - 2011. All rights reserved.
*
* See the file LICENSE for licensing information.
*
*/
#ifndef __LD_CANVAS_H__
#define __LD_CANVAS_H__
G_BEGIN_DECLS
#define LD_TYPE_CANVAS (ld_canvas_get_type ())
#define LD_CANVAS(obj) (G_TYPE_CHECK_INSTANCE_CAST \
((obj), LD_TYPE_CANVAS, LdCanvas))
#define LD_CANVAS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST \
((klass), LD_TYPE_CANVAS, LdCanvasClass))
#define LD_IS_CANVAS(obj) (G_TYPE_CHECK_INSTANCE_TYPE \
((obj), LD_TYPE_CANVAS))
#define LD_IS_CANVAS_CLASS(klass) (G_TYPE_CHECK_INSTANCE_TYPE \
((klass), LD_TYPE_CANVAS))
#define LD_CANVAS_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS \
((obj), LD_CANVAS, LdCanvasClass))
typedef struct _LdCanvas LdCanvas;
typedef struct _LdCanvasPrivate LdCanvasPrivate;
typedef struct _LdCanvasClass LdCanvasClass;
/**
* LdCanvas:
*/
struct _LdCanvas
{
/*< private >*/
GtkDrawingArea parent_instance;
LdCanvasPrivate *priv;
};
struct _LdCanvasClass
{
/*< private >*/
GtkDrawingAreaClass parent_class;
guint cancel_operation_signal;
guint move_signal;
void (*set_scroll_adjustments) (LdCanvas *self,
GtkAdjustment *horizontal, GtkAdjustment *vertical);
void (*cancel_operation) (LdCanvas *self);
void (*move) (LdCanvas *self, gdouble dx, gdouble dy);
};
/**
* LD_CANVAS_BASE_UNIT_LENGTH:
*
* Length of the base unit in milimetres.
*/
#define LD_CANVAS_BASE_UNIT_LENGTH 2.5
GType ld_canvas_get_type (void) G_GNUC_CONST;
GtkWidget *ld_canvas_new (void);
void ld_canvas_set_diagram (LdCanvas *self, LdDiagram *diagram);
LdDiagram *ld_canvas_get_diagram (LdCanvas *self);
void ld_canvas_set_library (LdCanvas *self, LdLibrary *library);
LdLibrary *ld_canvas_get_library (LdCanvas *self);
void ld_canvas_widget_to_diagram_coords (LdCanvas *self,
gdouble wx, gdouble wy, gdouble *dx, gdouble *dy);
void ld_canvas_diagram_to_widget_coords (LdCanvas *self,
gdouble dx, gdouble dy, gdouble *wx, gdouble *wy);
gdouble ld_canvas_get_zoom (LdCanvas *self);
void ld_canvas_set_zoom (LdCanvas *self, gdouble zoom);
gboolean ld_canvas_can_zoom_in (LdCanvas *self);
void ld_canvas_zoom_in (LdCanvas *self);
gboolean ld_canvas_can_zoom_out (LdCanvas *self);
void ld_canvas_zoom_out (LdCanvas *self);
void ld_canvas_add_object_begin (LdCanvas *self, LdDiagramObject *object);
/* TODO: The rest of the interface. */
G_END_DECLS
#endif /* ! __LD_CANVAS_H__ */
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