synfig-core/tags/synfig_0_61_07/src/synfig/layer_pastecanvas.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file layer_pastecanvas.cpp
   3 **      \brief Template Header
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include "layer_pastecanvas.h"
  34 #include "string.h"
  35 #include "time.h"
  36 #include "context.h"
  37 #include "paramdesc.h"
  38 #include "renddesc.h"
  39 #include "surface.h"
  40 #include "value.h"
  41 #include "valuenode.h"
  42 #include "canvas.h"
  43
  44 #endif
  45
  46 /* === U S I N G =========================================================== */
  47
  48 using namespace etl;
  49 using namespace std;
  50 using namespace synfig;
  51
  52 /* === M A C R O S ========================================================= */
  53
  54 #define MAX_DEPTH 10
  55
  56 //#ifdef __APPLE__
  57 //#define SYNFIG_NO_CLIP
  58 //#endif
  59
  60 /* === C L A S S E S ======================================================= */
  61
  62 class depth_counter     // Makes our recursive depth counter exception-safe
  63 {
  64         int *depth;
  65 public:
  66         depth_counter(int &x):depth(&x) { (*depth)++; }
  67         ~depth_counter() { (*depth)--; }
  68 };
  69
  70 /* === G L O B A L S ======================================================= */
  71
  72 SYNFIG_LAYER_INIT(Layer_PasteCanvas);
  73 SYNFIG_LAYER_SET_NAME(Layer_PasteCanvas,"PasteCanvas"); // todo: use paste_canvas
  74 SYNFIG_LAYER_SET_LOCAL_NAME(Layer_PasteCanvas,_("Paste Canvas"));
  75 SYNFIG_LAYER_SET_CATEGORY(Layer_PasteCanvas,_("Other"));
  76 SYNFIG_LAYER_SET_VERSION(Layer_PasteCanvas,"0.1");
  77 SYNFIG_LAYER_SET_CVS_ID(Layer_PasteCanvas,"$Id$");
  78
  79 /* === M E T H O D S ======================================================= */
  80
  81 Layer_PasteCanvas::Layer_PasteCanvas():
  82         origin(0,0),
  83         depth(0),
  84         zoom(0),
  85         time_offset(0)
  86 {
  87         children_lock=false;
  88         muck_with_time_=true;
  89         curr_time=Time::begin();
  90 }
  91
  92 Layer_PasteCanvas::~Layer_PasteCanvas()
  93 {
  94 /*      if(canvas)
  95                 canvas->parent_set.erase(this);
  96 */
  97
  98         //if(canvas)DEBUGINFO(strprintf("%d",canvas->count()));
  99
 100         set_sub_canvas(0);
 101
 102         //if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
 103         //      canvas->unref();
 104 }
 105
 106 String
 107 Layer_PasteCanvas::get_local_name()const
 108 {
 109         if(!canvas)     return _("Pasted Canvas");
 110         if(canvas->is_inline()) return _("Inline Canvas");
 111         if(canvas->get_root()==get_canvas()->get_root()) return '[' + canvas->get_id() + ']';
 112
 113         return '[' + canvas->get_file_name() + ']';
 114 }
 115
 116 Layer::Vocab
 117 Layer_PasteCanvas::get_param_vocab()const
 118 {
 119         Layer::Vocab ret(Layer_Composite::get_param_vocab());
 120
 121         ret.push_back(ParamDesc("origin")
 122                 .set_local_name(_("Origin"))
 123                 .set_description(_("Point where you want the origin to be"))
 124         );
 125         ret.push_back(ParamDesc("canvas")
 126                 .set_local_name(_("Canvas"))
 127                 .set_description(_("Canvas to paste"))
 128         );
 129         ret.push_back(ParamDesc("zoom")
 130                 .set_local_name(_("Zoom"))
 131                 .set_description(_("Size of canvas"))
 132         );
 133
 134         ret.push_back(ParamDesc("time_offset")
 135                 .set_local_name(_("Time Offset"))
 136         );
 137
 138         ret.push_back(ParamDesc("children_lock")
 139                 .set_local_name(_("Children Lock"))
 140         );
 141
 142         return ret;
 143 }
 144
 145 bool
 146 Layer_PasteCanvas::set_param(const String & param, const ValueBase &value)
 147 {
 148         IMPORT(origin);
 149
 150         if(param=="canvas" && value.same_type_as(Canvas::Handle()))
 151         {
 152                 set_sub_canvas(value.get(Canvas::Handle()));
 153                 return true;
 154         }
 155
 156 //      IMPORT(canvas);
 157         IMPORT(children_lock);
 158         IMPORT(zoom);
 159         IMPORT(time_offset);
 160
 161         return Layer_Composite::set_param(param,value);
 162 }
 163
 164 void
 165 Layer_PasteCanvas::set_sub_canvas(etl::handle<synfig::Canvas> x)
 166 {
 167         if(canvas && muck_with_time_)
 168                 remove_child(canvas.get());
 169
 170         if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
 171                 canvas->unref();
 172
 173         child_changed_connection.disconnect();
 174
 175         canvas=x;
 176
 177         /*if(canvas)
 178                 child_changed_connection=canvas->signal_changed().connect(
 179                         sigc::mem_fun(
 180                                 *this,
 181                                 &Layer_PasteCanvas::changed
 182                         )
 183                 );
 184         */
 185         if(canvas)
 186                 bounds=(canvas->get_context().get_full_bounding_rect()-canvas->rend_desc().get_focus())*exp(zoom)+origin+canvas->rend_desc().get_focus();
 187
 188         if(canvas && muck_with_time_)
 189                 add_child(canvas.get());
 190
 191         if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
 192                 canvas->ref();
 193
 194         if(canvas)
 195                 on_canvas_set();
 196 }
 197
 198 // This is called whenever the parent canvas gets set/changed
 199 void
 200 Layer_PasteCanvas::on_canvas_set()
 201 {
 202         //synfig::info("before count()=%d",count());
 203         if(get_canvas() && canvas && canvas->is_inline() && canvas->parent()!=get_canvas())
 204         {
 205                 //synfig::info("during count()=%d",count());
 206                 canvas->set_inline(get_canvas());
 207         }
 208         //synfig::info("after count()=%d",count());
 209 }
 210
 211 ValueBase
 212 Layer_PasteCanvas::get_param(const String& param)const
 213 {
 214         EXPORT(origin);
 215         EXPORT(canvas);
 216         EXPORT(zoom);
 217         EXPORT(time_offset);
 218         EXPORT(children_lock);
 219
 220         EXPORT_NAME();
 221         EXPORT_VERSION();
 222
 223         return Layer_Composite::get_param(param);
 224 }
 225
 226 void
 227 Layer_PasteCanvas::set_time(Context context, Time time)const
 228 {
 229         if(depth==MAX_DEPTH)return;depth_counter counter(depth);
 230         curr_time=time;
 231
 232         context.set_time(time);
 233         if(canvas)
 234         {
 235                 canvas->set_time(time+time_offset);
 236
 237                 bounds=(canvas->get_context().get_full_bounding_rect()-canvas->rend_desc().get_focus())*exp(zoom)+origin+canvas->rend_desc().get_focus();
 238         }
 239         else
 240                 bounds=Rect::zero();
 241 }
 242
 243 synfig::Layer::Handle
 244 Layer_PasteCanvas::hit_check(synfig::Context context, const synfig::Point &pos)const
 245 {
 246         if(depth==MAX_DEPTH)return 0;depth_counter counter(depth);
 247
 248         if (canvas) {
 249                 Point target_pos=(pos-canvas->rend_desc().get_focus()-origin)/exp(zoom)+canvas->rend_desc().get_focus();
 250
 251                 if(canvas && get_amount() && canvas->get_context().get_color(target_pos).get_a()>=0.25)
 252                 {
 253                         if(!children_lock)
 254                         {
 255                                 return canvas->get_context().hit_check(target_pos);
 256                         }
 257                         return const_cast<Layer_PasteCanvas*>(this);
 258                 }
 259         }
 260         return context.hit_check(pos);
 261 }
 262
 263 Color
 264 Layer_PasteCanvas::get_color(Context context, const Point &pos)const
 265 {
 266         if(!canvas || !get_amount())
 267                 return context.get_color(pos);
 268
 269         if(depth==MAX_DEPTH)return Color::alpha();depth_counter counter(depth);
 270
 271         Point target_pos=(pos-canvas->rend_desc().get_focus()-origin)/exp(zoom)+canvas->rend_desc().get_focus();
 272
 273         return Color::blend(canvas->get_context().get_color(target_pos),context.get_color(pos),get_amount(),get_blend_method());
 274 }
 275
 276
 277 bool
 278 Layer_PasteCanvas::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 279 {
 280         if(cb && !cb->amount_complete(0,10000)) return false;
 281
 282         if(depth==MAX_DEPTH)
 283         {
 284                 DEBUGPOINT();
 285                 // if we are at the extent of our depth,
 286                 // then we should just return whatever is under us.
 287                 return context.accelerated_render(surface,quality,renddesc,cb);
 288         }
 289         depth_counter counter(depth);
 290
 291         if(!canvas || !get_amount())
 292                 return context.accelerated_render(surface,quality,renddesc,cb);
 293
 294         if(muck_with_time_ && curr_time!=Time::begin() && canvas->get_time()!=curr_time+time_offset)
 295         {
 296                 canvas->set_time(curr_time+time_offset);
 297         }
 298
 299         SuperCallback stageone(cb,0,4500,10000);
 300         SuperCallback stagetwo(cb,4500,9000,10000);
 301         SuperCallback stagethree(cb,9000,9999,10000);
 302
 303         RendDesc desc(renddesc);
 304         Vector::value_type zoomfactor=1.0/exp(zoom);
 305         desc.clear_flags();
 306         desc.set_tl((desc.get_tl()-canvas->rend_desc().get_focus()-origin)*zoomfactor+canvas->rend_desc().get_focus());
 307         desc.set_br((desc.get_br()-canvas->rend_desc().get_focus()-origin)*zoomfactor+canvas->rend_desc().get_focus());
 308         desc.set_flags(RendDesc::PX_ASPECT);
 309
 310         if(is_solid_color() || context->empty())
 311         {
 312                 surface->set_wh(renddesc.get_w(),renddesc.get_h());
 313                 surface->clear();
 314         }
 315         else if(!context.accelerated_render(surface,quality,renddesc,&stageone))
 316                 return false;
 317         Color::BlendMethod blend_method(get_blend_method());
 318
 319         const Rect full_bounding_rect(canvas->get_context().get_full_bounding_rect());
 320
 321         if(context->empty())
 322         {
 323                 if(Color::is_onto(blend_method))
 324                         return true;
 325
 326                 if(blend_method==Color::BLEND_COMPOSITE)
 327                         blend_method=Color::BLEND_STRAIGHT;
 328         }
 329         else
 330         if(!etl::intersect(context.get_full_bounding_rect(),full_bounding_rect+origin))
 331         {
 332                 if(Color::is_onto(blend_method))
 333                         return true;
 334
 335                 if(blend_method==Color::BLEND_COMPOSITE)
 336                         blend_method=Color::BLEND_STRAIGHT;
 337         }
 338
 339 #ifndef SYNFIG_NO_CLIP
 340         {
 341                 //synfig::info("PasteCanv Clip");
 342                 Rect area(desc.get_rect()&full_bounding_rect);
 343
 344                 Point min(area.get_min());
 345                 Point max(area.get_max());
 346
 347                 if(desc.get_tl()[0]>desc.get_br()[0])
 348                         swap(min[0],max[0]);
 349                 if(desc.get_tl()[1]>desc.get_br()[1])
 350                         swap(min[1],max[1]);
 351
 352                 const int
 353                         x(floor_to_int((min[0]-desc.get_tl()[0])/desc.get_pw())),
 354                         y(floor_to_int((min[1]-desc.get_tl()[1])/desc.get_ph())),
 355                         w(ceil_to_int((max[0]-desc.get_tl()[0])/desc.get_pw())-x),
 356                         h(ceil_to_int((max[1]-desc.get_tl()[1])/desc.get_ph())-y);
 357
 358                 desc.set_subwindow(x,y,w,h);
 359
 360                 Surface pastesurface;
 361
 362                 if(area.area()<=0.000001 || desc.get_w()==0 || desc.get_h()==0)
 363                 {
 364                         if(cb && !cb->amount_complete(10000,10000)) return false;
 365
 366                         return true;
 367                 }
 368
 369                 if(!canvas->get_context().accelerated_render(&pastesurface,quality,desc,&stagetwo))
 370                         return false;
 371
 372                 Surface::alpha_pen apen(surface->get_pen(x,y));
 373
 374                 apen.set_alpha(get_amount());
 375                 apen.set_blend_method(blend_method);
 376
 377                 pastesurface.blit_to(apen);
 378         }
 379 #else
 380         {
 381                 Surface pastesurface;
 382
 383                 if(!canvas->get_context().accelerated_render(&pastesurface,quality,desc,&stagetwo))
 384                         return false;
 385
 386                 Surface::alpha_pen apen(surface->begin());
 387
 388                 apen.set_alpha(get_amount());
 389                 apen.set_blend_method(blend_method);
 390
 391                 pastesurface.blit_to(apen);
 392         }
 393 #endif
 394
 395         if(cb && !cb->amount_complete(10000,10000)) return false;
 396
 397         return true;
 398 }
 399
 400 Rect
 401 Layer_PasteCanvas::get_bounding_rect()const
 402 {
 403         return bounds;
 404 }
 405
 406 void Layer_PasteCanvas::get_times_vfunc(Node::time_set &set) const
 407 {
 408         Node::time_set tset;
 409         if(canvas) tset = canvas->get_times();
 410
 411         Node::time_set::iterator        i = tset.begin(),
 412                                                                         end = tset.end();
 413
 414         //Make sure we offset the time...
 415         //TODO: SOMETHING STILL HAS TO BE DONE WITH THE OTHER DIRECTION
 416         //              (recursing down the tree needs to take this into account too...)
 417         for(; i != end; ++i)
 418         {
 419                 set.insert(*i + time_offset);
 420         }
 421
 422         Layer::get_times_vfunc(set);
 423 }