+++ /dev/null
-/* === S Y N F I G ========================================================= */
-/*! \file zoom.cpp
-** \brief Implementation of the "Zoom" layer
-**
-** $Id$
-**
-** \legal
-** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-**
-** This package 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 package 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.
-** \endlegal
-*/
-/* ========================================================================= */
-
-/* === H E A D E R S ======================================================= */
-
-#ifdef USING_PCH
-# include "pch.h"
-#else
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include "zoom.h"
-#include <synfig/string.h>
-#include <synfig/time.h>
-#include <synfig/context.h>
-#include <synfig/paramdesc.h>
-#include <synfig/renddesc.h>
-#include <synfig/surface.h>
-#include <synfig/value.h>
-#include <synfig/valuenode.h>
-#include <synfig/transform.h>
-
-#endif
-
-/* === M A C R O S ========================================================= */
-
-/* === G L O B A L S ======================================================= */
-
-SYNFIG_LAYER_INIT(Zoom);
-SYNFIG_LAYER_SET_NAME(Zoom,"zoom");
-SYNFIG_LAYER_SET_LOCAL_NAME(Zoom,N_("Zoom"));
-SYNFIG_LAYER_SET_CATEGORY(Zoom,N_("Transform"));
-SYNFIG_LAYER_SET_VERSION(Zoom,"0.1");
-SYNFIG_LAYER_SET_CVS_ID(Zoom,"$Id$");
-
-/* === P R O C E D U R E S ================================================= */
-
-/* === M E T H O D S ======================================================= */
-
-/* === E N T R Y P O I N T ================================================= */
-
-Zoom::Zoom():
- center(0,0),
- amount(0)
-{
-}
-
-bool
-Zoom::set_param(const String & param, const ValueBase &value)
-{
-
- IMPORT(center);
- IMPORT(amount);
-
- return false;
-}
-
-ValueBase
-Zoom::get_param(const String ¶m)const
-{
- EXPORT(center);
- EXPORT(amount);
-
- EXPORT_NAME();
- EXPORT_VERSION();
-
- return ValueBase();
-}
-
-Layer::Vocab
-Zoom::get_param_vocab()const
-{
- Layer::Vocab ret;
-
- ret.push_back(ParamDesc("amount")
- .set_local_name(_("Amount"))
- .set_description(_("Amount to zoom in"))
- );
-
- ret.push_back(ParamDesc("center")
- .set_local_name(_("Center"))
- .set_description(_("Point to zoom in to"))
- );
-
- return ret;
-}
-
-synfig::Layer::Handle
-Zoom::hit_check(synfig::Context context, const synfig::Point &pos)const
-{
- return context.hit_check((pos-center)/exp(amount)+center);
-}
-
-Color
-Zoom::get_color(Context context, const Point &pos)const
-{
- return context.get_color((pos-center)/exp(amount)+center);
-}
-
-class Zoom_Trans : public Transform
-{
- etl::handle<const Zoom> layer;
-public:
- Zoom_Trans(const Zoom* x):Transform(x->get_guid()),layer(x) { }
-
- synfig::Vector perform(const synfig::Vector& x)const
- {
- return (x-layer->center)*exp(layer->amount)+layer->center;
- }
-
- synfig::Vector unperform(const synfig::Vector& x)const
- {
- return (x-layer->center)/exp(layer->amount)+layer->center;
- }
-};
-etl::handle<Transform>
-Zoom::get_transform()const
-{
- return new Zoom_Trans(this);
-}
-
-bool
-Zoom::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
-{
- Vector::value_type zoomfactor=1.0/exp(amount);
- RendDesc desc(renddesc);
- desc.clear_flags();
-
- // Adjust the top_left and bottom_right points
- // for our zoom amount
- desc.set_tl((desc.get_tl()-center)*zoomfactor+center);
- desc.set_br((desc.get_br()-center)*zoomfactor+center);
-
- // Render the scene
- return context.accelerated_render(surface,quality,desc,cb);
-}
-
-synfig::Rect
-Zoom::get_full_bounding_rect(synfig::Context context)const
-{
- return (context.get_full_bounding_rect()-center)*exp(amount)+center;
-}