dw_gtk_viewport.h

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#ifndef __DW_GTK_VIEWPORT_H__
#define __DW_GTK_VIEWPORT_H__

#include <gtk/gtklayout.h>
#include "dw_widget.h"

#ifdef __cplusplus
extern "C" {
#endif				/* __cplusplus */

#define GTK_TYPE_DW_VIEWPORT            (a_Dw_gtk_viewport_get_type ())
#define GTK_DW_VIEWPORT(obj)            (GTK_CHECK_CAST (obj, \
                                           GTK_TYPE_DW_VIEWPORT,GtkDwViewport))
#define GTK_DW_VIEWPORT_CLASS(klass)    (GTK_CHECK_CLASS_CAST (klass, \
                                          GTK_TYPE_DW_VIEWPORT, \
                                          GtkDwViewportClass)
#define GTK_IS_DW_VIEWPORT(obj)         GTK_CHECK_TYPE (obj, \
                                           GTK_TYPE_DW_VIEWPORT)

	typedef struct _GtkDwViewport GtkDwViewport;
	typedef struct _GtkDwViewportClass GtkDwViewportClass;


	struct _GtkDwViewport {
		GtkLayout layout;

		DwWidget *child;
		DwWidget *last_entered;
		gint resize_idle_id;

		/* updated by Dw_gtk_viewport_motion_notify */
		gdouble mouse_x, mouse_y;

		GdkPixmap *back_pixmap;
		GdkGC *back_gc;
		gint back_width, back_height;

		gchar *anchor;
		gchar *queued_anchor;
		gint32 anchor_y;
		gint anchor_idle_id;
	};


	struct _GtkDwViewportClass {
		GtkLayoutClass parent_class;
	};


	GtkType a_Dw_gtk_viewport_get_type(void);
	GtkWidget *a_Dw_gtk_viewport_new(GtkAdjustment * hadjustment, GtkAdjustment * vadjustment);
	void a_Dw_gtk_viewport_add_dw(GtkDwViewport * viewport, DwWidget * widget);

	void a_Dw_gtk_viewport_set_anchor(GtkDwViewport * viewport, gchar * anchor);
	void a_Dw_gtk_viewport_queue_anchor(GtkDwViewport * viewport, gchar * anchor);

	void Dw_gtk_viewport_remove_dw(GtkDwViewport * viewport);
	void Dw_gtk_viewport_calc_size(GtkDwViewport * viewport);

	DwWidget *Dw_gtk_viewport_widget_at_point(GtkDwViewport * viewport, gint32 x, gint32 y);

	void Dw_gtk_viewport_update_anchor(GtkDwViewport * viewport);
	void Dw_gtk_viewport_scroll_to(GtkDwViewport * viewport, gint32 y);
	void Dw_gtk_viewport_remove_anchor(GtkDwViewport * viewport);

#ifdef __cplusplus
}
#endif				/* __cplusplus */
#endif				/* __DW_GTK_VIEWPORT_H__ */