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