/* -*- c++ -*-
 * Copyright ©2008 Hugo Mills <hugo@carfax.org.uk>
 *
 * This software is distributed under the terms of the GNU GPL v3
 * For more information on the GPL, see the file COPYING or 
 * visit http://www.gnu.org/
 *
 * This software is distributed without warranty
 */

#include "xfview_translate.h"
#include "magellan/plugininfo_viewport.h"

extern "C" PluginInfo* getmodules(int i)
{
	if(i == 0)
	{
		PluginInfo_Viewport* pi = new PluginInfo_Viewport();

		pi->name = "Translating Viewport";
		pi->author = "Hugo Mills";
		pi->version = 0x10001;
		pi->parser = XfView_Translate::parse;
		return pi;
	}
	else
		return NULL;
}

XfView* XfView_Translate::parse(ConfigLexer*, const std::string&, const std::string&)
{
	return NULL;
}

XfView_Translate::XfView_Translate(XfView* vp, int xoff, int yoff)
	: XfView(ivec2(0), ivec2(0), ivec2(0), vp->scaling()),
	  view(vp),
	  xoffset(xoff),
	  yoffset(yoff)
{
}

XfView_Translate::~XfView_Translate()
{
}

bool XfView_Translate::f(ivec2& result, const dvec2& pre) const
{
	bool rv = view->f(result, pre);
	result[0] += xoffset;
	result[1] += yoffset;

	return rv;
}

bool XfView_Translate::g(dvec2& result, const ivec2& post) const
{
	ivec2 xy = post;
	xy[0] -= xoffset;
	xy[1] -= yoffset;

	return view->g(result, xy);
}