Stable Tag: Copying everything over
[synfig.git] / synfig-core / tags / stable / src / synfig / layer_pastecanvas.cpp
diff --git a/synfig-core/tags/stable/src/synfig/layer_pastecanvas.cpp b/synfig-core/tags/stable/src/synfig/layer_pastecanvas.cpp
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+/* === S Y N F I G ========================================================= */
+/*!    \file layer_pastecanvas.cpp
+**     \brief Template Header
+**
+**     $Id$
+**
+**     \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 "layer_pastecanvas.h"
+#include "string.h"
+#include "time.h"
+#include "context.h"
+#include "paramdesc.h"
+#include "renddesc.h"
+#include "surface.h"
+#include "value.h"
+#include "valuenode.h"
+#include "canvas.h"
+
+#endif
+
+/* === U S I N G =========================================================== */
+
+using namespace etl;
+using namespace std;
+using namespace synfig;
+
+/* === M A C R O S ========================================================= */
+
+#define MAX_DEPTH 10
+
+//#ifdef __APPLE__
+//#define SYNFIG_NO_CLIP
+//#endif
+
+/* === C L A S S E S ======================================================= */
+
+class depth_counter    // Makes our recursive depth counter exception-safe
+{
+       int *depth;
+public:
+       depth_counter(int &x):depth(&x) { (*depth)++; }
+       ~depth_counter() { (*depth)--; }
+};
+
+/* === G L O B A L S ======================================================= */
+
+SYNFIG_LAYER_INIT(Layer_PasteCanvas);
+SYNFIG_LAYER_SET_NAME(Layer_PasteCanvas,"PasteCanvas");
+SYNFIG_LAYER_SET_LOCAL_NAME(Layer_PasteCanvas,_("Paste Canvas"));
+SYNFIG_LAYER_SET_CATEGORY(Layer_PasteCanvas,_("Default"));
+SYNFIG_LAYER_SET_VERSION(Layer_PasteCanvas,"0.1");
+SYNFIG_LAYER_SET_CVS_ID(Layer_PasteCanvas,"$Id$");
+
+/* === M E T H O D S ======================================================= */
+
+Layer_PasteCanvas::Layer_PasteCanvas():
+       origin(0,0),
+       depth(0),
+       zoom(0),
+       time_offset(0)
+{
+       children_lock=false;
+       do_not_muck_with_time_=false;
+       curr_time=Time::begin();
+}
+
+Layer_PasteCanvas::~Layer_PasteCanvas()
+{
+/*     if(canvas)
+               canvas->parent_set.erase(this);
+*/
+
+       //if(canvas)DEBUGINFO(strprintf("%d",canvas->count()));
+
+       set_sub_canvas(0);
+
+       //if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
+       //      canvas->unref();
+}
+
+String
+Layer_PasteCanvas::get_local_name()const
+{
+       if(!canvas)     return _("Pasted Canvas");
+       if(canvas->is_inline()) return _("Inline Canvas");
+       if(canvas->get_root()==get_canvas()->get_root()) return '[' + canvas->get_id() + ']';
+
+       return '[' + canvas->get_file_name() + ']';
+}
+
+Layer::Vocab
+Layer_PasteCanvas::get_param_vocab()const
+{
+       Layer::Vocab ret(Layer_Composite::get_param_vocab());
+
+       ret.push_back(ParamDesc("origin")
+               .set_local_name(_("Origin"))
+               .set_description(_("Point where you want the origin to be"))
+       );
+       ret.push_back(ParamDesc("canvas")
+               .set_local_name(_("Canvas"))
+               .set_description(_("Canvas to paste"))
+       );
+       ret.push_back(ParamDesc("zoom")
+               .set_local_name(_("Zoom"))
+               .set_description(_("Size of canvas"))
+       );
+
+       ret.push_back(ParamDesc("time_offset")
+               .set_local_name(_("Time Offset"))
+       );
+
+       ret.push_back(ParamDesc("children_lock")
+               .set_local_name(_("Children Lock"))
+       );
+
+       return ret;
+}
+
+bool
+Layer_PasteCanvas::set_param(const String & param, const ValueBase &value)
+{
+       IMPORT(origin);
+
+       if(param=="canvas" && value.same_as(Canvas::Handle()))
+       {
+               set_sub_canvas(value.get(Canvas::Handle()));
+               return true;
+       }
+
+//     IMPORT(canvas);
+       IMPORT(children_lock);
+       IMPORT(zoom);
+       IMPORT(time_offset);
+
+       return Layer_Composite::set_param(param,value);
+}
+
+void
+Layer_PasteCanvas::set_sub_canvas(etl::handle<synfig::Canvas> x)
+{
+       if(canvas && !do_not_muck_with_time_)
+               remove_child(canvas.get());
+
+       if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
+               canvas->unref();
+
+       child_changed_connection.disconnect();
+
+       canvas=x;
+
+       /*if(canvas)
+               child_changed_connection=canvas->signal_changed().connect(
+                       sigc::mem_fun(
+                               *this,
+                               &Layer_PasteCanvas::changed
+                       )
+               );
+       */
+       if(canvas)
+               bounds=(canvas->get_context().get_full_bounding_rect()-canvas->rend_desc().get_focus())*exp(zoom)+origin+canvas->rend_desc().get_focus();
+
+       if(canvas && !do_not_muck_with_time_)
+               add_child(canvas.get());
+
+       if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
+               canvas->ref();
+
+       if(canvas)
+               on_canvas_set();
+}
+
+// This is called whenever the parent canvas gets set/changed
+void
+Layer_PasteCanvas::on_canvas_set()
+{
+       //synfig::info("before count()=%d",count());
+       if(get_canvas() && canvas && canvas->is_inline() && canvas->parent()!=get_canvas())
+       {
+               //synfig::info("during count()=%d",count());
+               canvas->set_inline(get_canvas());
+       }
+       //synfig::info("after count()=%d",count());
+}
+
+ValueBase
+Layer_PasteCanvas::get_param(const String& param)const
+{
+       EXPORT(origin);
+       EXPORT(canvas);
+       EXPORT(zoom);
+       EXPORT(time_offset);
+       EXPORT(children_lock);
+
+       EXPORT_NAME();
+       EXPORT_VERSION();
+
+       return Layer_Composite::get_param(param);
+}
+
+void
+Layer_PasteCanvas::set_time(Context context, Time time)const
+{
+       if(depth==MAX_DEPTH)return;depth_counter counter(depth);
+       curr_time=time;
+
+       context.set_time(time);
+       if(canvas)
+       {
+               canvas->set_time(time);
+
+               bounds=(canvas->get_context().get_full_bounding_rect()-canvas->rend_desc().get_focus())*exp(zoom)+origin+canvas->rend_desc().get_focus();
+       }
+       else
+               bounds=Rect::zero();
+}
+
+synfig::Layer::Handle
+Layer_PasteCanvas::hit_check(synfig::Context context, const synfig::Point &pos)const
+{
+       if(depth==MAX_DEPTH)return 0;depth_counter counter(depth);
+
+       Point target_pos=(pos-canvas->rend_desc().get_focus()-origin)/exp(zoom)+canvas->rend_desc().get_focus();
+
+       if(canvas && get_amount() && canvas->get_context().get_color(target_pos).get_a()>=0.25)
+       {
+               if(!children_lock)
+               {
+                       return canvas->get_context().hit_check(target_pos);
+               }
+               return const_cast<Layer_PasteCanvas*>(this);
+       }
+       else
+               return context.hit_check(pos);
+}
+
+Color
+Layer_PasteCanvas::get_color(Context context, const Point &pos)const
+{
+       if(!canvas || !get_amount())
+               return context.get_color(pos);
+
+       if(depth==MAX_DEPTH)return Color::alpha();depth_counter counter(depth);
+
+       Point target_pos=(pos-canvas->rend_desc().get_focus()-origin)/exp(zoom)+canvas->rend_desc().get_focus();
+
+       return Color::blend(canvas->get_context().get_color(target_pos),context.get_color(pos),get_amount(),get_blend_method());
+}
+
+
+bool
+Layer_PasteCanvas::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
+{
+       if(cb && !cb->amount_complete(0,10000)) return false;
+
+       if(depth==MAX_DEPTH)
+       {
+               DEBUGPOINT();
+               // if we are at the extent of our depth,
+               // then we should just return whatever is under us.
+               return context.accelerated_render(surface,quality,renddesc,cb);
+       }
+       depth_counter counter(depth);
+
+       if(!canvas || !get_amount())
+               return context.accelerated_render(surface,quality,renddesc,cb);
+
+       if(!do_not_muck_with_time_ &&   curr_time!=Time::begin() && canvas->get_time()!=curr_time+time_offset)
+       {
+               canvas->set_time(curr_time+time_offset);
+       }
+
+       SuperCallback stageone(cb,0,4500,10000);
+       SuperCallback stagetwo(cb,4500,9000,10000);
+       SuperCallback stagethree(cb,9000,9999,10000);
+
+       RendDesc desc(renddesc);
+       Vector::value_type zoomfactor=1.0/exp(zoom);
+       desc.clear_flags();
+       desc.set_tl((desc.get_tl()-canvas->rend_desc().get_focus()-origin)*zoomfactor+canvas->rend_desc().get_focus());
+       desc.set_br((desc.get_br()-canvas->rend_desc().get_focus()-origin)*zoomfactor+canvas->rend_desc().get_focus());
+       desc.set_flags(RendDesc::PX_ASPECT);
+
+       if(is_solid_color() || context->empty())
+       {
+               surface->set_wh(renddesc.get_w(),renddesc.get_h());
+               surface->clear();
+       }
+       else if(!context.accelerated_render(surface,quality,renddesc,&stageone))
+               return false;
+       Color::BlendMethod blend_method(get_blend_method());
+
+       const Rect full_bounding_rect(canvas->get_context().get_full_bounding_rect());
+
+       if(context->empty())
+       {
+               if(Color::is_onto(blend_method))
+                       return true;
+
+               if(blend_method==Color::BLEND_COMPOSITE)
+                       blend_method=Color::BLEND_STRAIGHT;
+       }
+       else
+       if(!etl::intersect(context.get_full_bounding_rect(),full_bounding_rect+origin))
+       {
+               if(Color::is_onto(blend_method))
+                       return true;
+
+               if(blend_method==Color::BLEND_COMPOSITE)
+                       blend_method=Color::BLEND_STRAIGHT;
+       }
+
+#ifndef SYNFIG_NO_CLIP
+       {
+               //synfig::info("PasteCanv Clip");
+               Rect area(desc.get_rect()&full_bounding_rect);
+
+               Point min(area.get_min());
+               Point max(area.get_max());
+
+               if(desc.get_tl()[0]>desc.get_br()[0])
+                       swap(min[0],max[0]);
+               if(desc.get_tl()[1]>desc.get_br()[1])
+                       swap(min[1],max[1]);
+
+               const int
+                       x(floor_to_int((min[0]-desc.get_tl()[0])/desc.get_pw())),
+                       y(floor_to_int((min[1]-desc.get_tl()[1])/desc.get_ph())),
+                       w(ceil_to_int((max[0]-desc.get_tl()[0])/desc.get_pw())-x),
+                       h(ceil_to_int((max[1]-desc.get_tl()[1])/desc.get_ph())-y);
+
+               desc.set_subwindow(x,y,w,h);
+
+               Surface pastesurface;
+
+               if(area.area()<=0.000001 || desc.get_w()==0 || desc.get_h()==0)
+               {
+                       if(cb && !cb->amount_complete(10000,10000)) return false;
+
+                       return true;
+               }
+
+               if(!canvas->get_context().accelerated_render(&pastesurface,quality,desc,&stagetwo))
+                       return false;
+
+               Surface::alpha_pen apen(surface->get_pen(x,y));
+
+               apen.set_alpha(get_amount());
+               apen.set_blend_method(blend_method);
+
+               pastesurface.blit_to(apen);
+       }
+#else
+       {
+               Surface pastesurface;
+
+               if(!canvas->get_context().accelerated_render(&pastesurface,quality,desc,&stagetwo))
+                       return false;
+
+               Surface::alpha_pen apen(surface->begin());
+
+               apen.set_alpha(get_amount());
+               apen.set_blend_method(blend_method);
+
+               pastesurface.blit_to(apen);
+       }
+#endif
+
+       if(cb && !cb->amount_complete(10000,10000)) return false;
+
+       return true;
+}
+
+Rect
+Layer_PasteCanvas::get_bounding_rect()const
+{
+       return bounds;
+}
+
+void Layer_PasteCanvas::get_times_vfunc(Node::time_set &set) const
+{
+       Node::time_set tset;
+       if(canvas) tset = canvas->get_times();
+
+       Node::time_set::iterator        i = tset.begin(),
+                                                                       end = tset.end();
+
+       //Make sure we offset the time...
+       //TODO: SOMETHING STILL HAS TO BE DONE WITH THE OTHER DIRECTION
+       //              (recursing down the tree needs to take this into account too...)
+       for(; i != end; ++i)
+       {
+               set.insert(*i + time_offset);
+       }
+
+       Layer::get_times_vfunc(set);
+}