synfig-core/trunk/src/synfig/layer_pastecanvas.cpp

   1 /* === S I N F G =========================================================== */
   2 /*!     \file layer_pastecanvas.h
   3 **      \brief Template Header
   4 **
   5 **      $Id: layer_pastecanvas.cpp,v 1.3 2005/01/24 03:08:18 darco Exp $
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002 Robert B. Quattlebaum Jr.
   9 **
  10 **      This software and associated documentation
  11 **      are CONFIDENTIAL and PROPRIETARY property of
  12 **      the above-mentioned copyright holder.
  13 **
  14 **      You may not copy, print, publish, or in any
  15 **      other way distribute this software without
  16 **      a prior written agreement with
  17 **      the copyright holder.
  18 **      \endlegal
  19 */
  20 /* ========================================================================= */
  21
  22 /* === H E A D E R S ======================================================= */
  23
  24 #ifdef USING_PCH
  25 #       include "pch.h"
  26 #else
  27 #ifdef HAVE_CONFIG_H
  28 #       include <config.h>
  29 #endif
  30
  31 #include "layer_pastecanvas.h"
  32 #include "string.h"
  33 #include "time.h"
  34 #include "context.h"
  35 #include "paramdesc.h"
  36 #include "renddesc.h"
  37 #include "surface.h"
  38 #include "value.h"
  39 #include "valuenode.h"
  40 #include "canvas.h"
  41
  42 #endif
  43
  44 /* === U S I N G =========================================================== */
  45
  46 using namespace etl;
  47 using namespace std;
  48 using namespace sinfg;
  49
  50 /* === M A C R O S ========================================================= */
  51
  52 #define MAX_DEPTH 10
  53
  54 //#ifdef __APPLE__
  55 //#define SINFG_NO_CLIP
  56 //#endif
  57
  58 /* === C L A S S E S ======================================================= */
  59
  60 class depth_counter     // Makes our recursive depth counter exception-safe
  61 {
  62         int *depth;
  63 public:
  64         depth_counter(int &x):depth(&x) { (*depth)++; }
  65         ~depth_counter() { (*depth)--; }
  66 };
  67
  68 /* === G L O B A L S ======================================================= */
  69
  70 SINFG_LAYER_INIT(Layer_PasteCanvas);
  71 SINFG_LAYER_SET_NAME(Layer_PasteCanvas,"PasteCanvas");
  72 SINFG_LAYER_SET_LOCAL_NAME(Layer_PasteCanvas,_("Paste Canvas"));
  73 SINFG_LAYER_SET_CATEGORY(Layer_PasteCanvas,_("Default"));
  74 SINFG_LAYER_SET_VERSION(Layer_PasteCanvas,"0.1");
  75 SINFG_LAYER_SET_CVS_ID(Layer_PasteCanvas,"$Id: layer_pastecanvas.cpp,v 1.3 2005/01/24 03:08:18 darco Exp $");
  76
  77 /* === M E T H O D S ======================================================= */
  78
  79 Layer_PasteCanvas::Layer_PasteCanvas():
  80         origin(0,0),
  81         zoom(0),
  82         time_offset(0)
  83 {
  84         children_lock=false;
  85         do_not_muck_with_time_=false;
  86         curr_time=Time::begin();
  87 }
  88
  89 Layer_PasteCanvas::~Layer_PasteCanvas()
  90 {
  91 /*      if(canvas)
  92                 canvas->parent_set.erase(this);
  93 */
  94
  95         //if(canvas)DEBUGINFO(strprintf("%d",canvas->count()));
  96
  97         set_sub_canvas(0);
  98
  99         //if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
 100         //      canvas->unref();
 101 }
 102
 103 String
 104 Layer_PasteCanvas::get_local_name()const
 105 {
 106         if(!canvas)     return _("Pasted Canvas");
 107         if(canvas->is_inline()) return _("Inline Canvas");
 108         if(canvas->get_root()==get_canvas()->get_root()) return '[' + canvas->get_id() + ']';
 109
 110         return '[' + canvas->get_file_name() + ']';
 111 }
 112
 113 Layer::Vocab
 114 Layer_PasteCanvas::get_param_vocab()const
 115 {
 116         Layer::Vocab ret(Layer_Composite::get_param_vocab());
 117
 118         ret.push_back(ParamDesc("origin")
 119                 .set_local_name(_("Origin"))
 120                 .set_description(_("Point where you want the origin to be"))
 121         );
 122         ret.push_back(ParamDesc("canvas")
 123                 .set_local_name(_("Canvas"))
 124                 .set_description(_("Canvas to paste"))
 125         );
 126         ret.push_back(ParamDesc("zoom")
 127                 .set_local_name(_("Zoom"))
 128                 .set_description(_("Size of canvas"))
 129         );
 130
 131         ret.push_back(ParamDesc("time_offset")
 132                 .set_local_name(_("Time Offset"))
 133         );
 134
 135         ret.push_back(ParamDesc("children_lock")
 136                 .set_local_name(_("Children Lock"))
 137         );
 138
 139         return ret;
 140 }
 141
 142 bool
 143 Layer_PasteCanvas::set_param(const String & param, const ValueBase &value)
 144 {
 145         IMPORT(origin);
 146
 147         if(param=="canvas" && value.same_as(Canvas::Handle()))
 148         {
 149                 set_sub_canvas(value.get(Canvas::Handle()));
 150                 return true;
 151         }
 152
 153 //      IMPORT(canvas);
 154         IMPORT(children_lock);
 155         IMPORT(zoom);
 156         IMPORT(time_offset);
 157
 158         return Layer_Composite::set_param(param,value);
 159 }
 160
 161 void
 162 Layer_PasteCanvas::set_sub_canvas(etl::handle<sinfg::Canvas> x)
 163 {
 164         if(canvas && !do_not_muck_with_time_)
 165                 remove_child(canvas.get());
 166
 167         if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
 168                 canvas->unref();
 169
 170         child_changed_connection.disconnect();
 171
 172         canvas=x;
 173
 174         /*if(canvas)
 175                 child_changed_connection=canvas->signal_changed().connect(
 176                         sigc::mem_fun(
 177                                 *this,
 178                                 &Layer_PasteCanvas::changed
 179                         )
 180                 );
 181         */
 182         if(canvas)
 183                 bounds=(canvas->get_context().get_full_bounding_rect()-canvas->rend_desc().get_focus())*exp(zoom)+origin+canvas->rend_desc().get_focus();
 184
 185         if(canvas && !do_not_muck_with_time_)
 186                 add_child(canvas.get());
 187
 188         if(canvas && (canvas->is_inline() || !get_canvas() || get_canvas()->get_root()!=canvas->get_root()))
 189                 canvas->ref();
 190
 191         if(canvas)
 192                 on_canvas_set();
 193 }
 194
 195 // This is called whenever the parent canvas gets set/changed
 196 void
 197 Layer_PasteCanvas::on_canvas_set()
 198 {
 199         //sinfg::info("before count()=%d",count());
 200         if(get_canvas() && canvas && canvas->is_inline() && canvas->parent()!=get_canvas())
 201         {
 202                 //sinfg::info("during count()=%d",count());
 203                 canvas->set_inline(get_canvas());
 204         }
 205         //sinfg::info("after count()=%d",count());
 206 }
 207
 208 ValueBase
 209 Layer_PasteCanvas::get_param(const String& param)const
 210 {
 211         EXPORT(origin);
 212         EXPORT(canvas);
 213         EXPORT(zoom);
 214         EXPORT(time_offset);
 215         EXPORT(children_lock);
 216
 217         EXPORT_NAME();
 218         EXPORT_VERSION();
 219
 220         return Layer_Composite::get_param(param);
 221 }
 222
 223 void
 224 Layer_PasteCanvas::set_time(Context context, Time time)const
 225 {
 226         if(depth==MAX_DEPTH)return;depth_counter counter(depth);
 227         curr_time=time;
 228
 229         context.set_time(time);
 230         if(canvas)
 231         {
 232                 canvas->set_time(time);
 233
 234                 bounds=(canvas->get_context().get_full_bounding_rect()-canvas->rend_desc().get_focus())*exp(zoom)+origin+canvas->rend_desc().get_focus();
 235         }
 236         else
 237                 bounds=Rect::zero();
 238 }
 239
 240 sinfg::Layer::Handle
 241 Layer_PasteCanvas::hit_check(sinfg::Context context, const sinfg::Point &pos)const
 242 {
 243         if(depth==MAX_DEPTH)return 0;depth_counter counter(depth);
 244
 245         Point target_pos=(pos-canvas->rend_desc().get_focus()-origin)/exp(zoom)+canvas->rend_desc().get_focus();
 246
 247         if(canvas && get_amount() && canvas->get_context().get_color(target_pos).get_a()>=0.25)
 248         {
 249                 if(!children_lock)
 250                 {
 251                         return canvas->get_context().hit_check(target_pos);
 252                 }
 253                 return const_cast<Layer_PasteCanvas*>(this);
 254         }
 255         else
 256                 return context.hit_check(pos);
 257 }
 258
 259 Color
 260 Layer_PasteCanvas::get_color(Context context, const Point &pos)const
 261 {
 262         if(!canvas || !get_amount())
 263                 return context.get_color(pos);
 264
 265         if(depth==MAX_DEPTH)return Color::alpha();depth_counter counter(depth);
 266
 267         Point target_pos=(pos-canvas->rend_desc().get_focus()-origin)/exp(zoom)+canvas->rend_desc().get_focus();
 268
 269         return Color::blend(canvas->get_context().get_color(target_pos),context.get_color(pos),get_amount(),get_blend_method());
 270 }
 271
 272
 273 bool
 274 Layer_PasteCanvas::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 275 {
 276         if(cb && !cb->amount_complete(0,10000)) return false;
 277
 278         if(depth==MAX_DEPTH)
 279         {
 280                 DEBUGPOINT();
 281                 // if we are at the extent of our depth,
 282                 // then we should just return whatever is under us.
 283                 return context.accelerated_render(surface,quality,renddesc,cb);
 284         }
 285         depth_counter counter(depth);
 286
 287         if(!canvas || !get_amount())
 288                 return context.accelerated_render(surface,quality,renddesc,cb);
 289
 290         if(!do_not_muck_with_time_ &&   curr_time!=Time::begin() && canvas->get_time()!=curr_time+time_offset)
 291         {
 292                 canvas->set_time(curr_time+time_offset);
 293         }
 294
 295         SuperCallback stageone(cb,0,4500,10000);
 296         SuperCallback stagetwo(cb,4500,9000,10000);
 297         SuperCallback stagethree(cb,9000,9999,10000);
 298
 299         RendDesc desc(renddesc);
 300         Vector::value_type zoomfactor=1.0/exp(zoom);
 301         desc.clear_flags();
 302         desc.set_tl((desc.get_tl()-canvas->rend_desc().get_focus()-origin)*zoomfactor+canvas->rend_desc().get_focus());
 303         desc.set_br((desc.get_br()-canvas->rend_desc().get_focus()-origin)*zoomfactor+canvas->rend_desc().get_focus());
 304         desc.set_flags(RendDesc::PX_ASPECT);
 305
 306         if(is_solid_color() || context->empty())
 307         {
 308                 surface->set_wh(renddesc.get_w(),renddesc.get_h());
 309                 surface->clear();
 310         }
 311         else if(!context.accelerated_render(surface,quality,renddesc,&stageone))
 312                 return false;
 313         Color::BlendMethod blend_method(get_blend_method());
 314
 315         const Rect full_bounding_rect(canvas->get_context().get_full_bounding_rect());
 316
 317         if(context->empty())
 318         {
 319                 if(Color::is_onto(blend_method))
 320                         return true;
 321
 322                 if(blend_method==Color::BLEND_COMPOSITE)
 323                         blend_method=Color::BLEND_STRAIGHT;
 324         }
 325         else
 326         if(!etl::intersect(context.get_full_bounding_rect(),full_bounding_rect))
 327         {
 328                 if(Color::is_onto(blend_method))
 329                         return true;
 330
 331                 if(blend_method==Color::BLEND_COMPOSITE)
 332                         blend_method=Color::BLEND_STRAIGHT;
 333         }
 334
 335 #ifndef SINFG_NO_CLIP
 336         {
 337                 //sinfg::info("PasteCanv Clip");
 338                 Rect area(desc.get_rect()&full_bounding_rect);
 339
 340                 Point min(area.get_min());
 341                 Point max(area.get_max());
 342
 343                 if(desc.get_tl()[0]>desc.get_br()[0])
 344                         swap(min[0],max[0]);
 345                 if(desc.get_tl()[1]>desc.get_br()[1])
 346                         swap(min[1],max[1]);
 347
 348                 const int
 349                         x(floor_to_int((min[0]-desc.get_tl()[0])/desc.get_pw())),
 350                         y(floor_to_int((min[1]-desc.get_tl()[1])/desc.get_ph())),
 351                         w(ceil_to_int((max[0]-desc.get_tl()[0])/desc.get_pw())-x),
 352                         h(ceil_to_int((max[1]-desc.get_tl()[1])/desc.get_ph())-y);
 353
 354                 desc.set_subwindow(x,y,w,h);
 355
 356                 Surface pastesurface;
 357
 358                 if(area.area()<=0.000001 || desc.get_w()==0 || desc.get_h()==0)
 359                 {
 360                         if(cb && !cb->amount_complete(10000,10000)) return false;
 361
 362                         return true;
 363                 }
 364
 365                 if(!canvas->get_context().accelerated_render(&pastesurface,quality,desc,&stagetwo))
 366                         return false;
 367
 368                 Surface::alpha_pen apen(surface->get_pen(x,y));
 369
 370                 apen.set_alpha(get_amount());
 371                 apen.set_blend_method(blend_method);
 372
 373                 pastesurface.blit_to(apen);
 374         }
 375 #else
 376         {
 377                 Surface pastesurface;
 378
 379                 if(!canvas->get_context().accelerated_render(&pastesurface,quality,desc,&stagetwo))
 380                         return false;
 381
 382                 Surface::alpha_pen apen(surface->begin());
 383
 384                 apen.set_alpha(get_amount());
 385                 apen.set_blend_method(blend_method);
 386
 387                 pastesurface.blit_to(apen);
 388         }
 389 #endif
 390
 391         if(cb && !cb->amount_complete(10000,10000)) return false;
 392
 393         return true;
 394 }
 395
 396 Rect
 397 Layer_PasteCanvas::get_bounding_rect()const
 398 {
 399         return bounds;
 400 }
 401
 402 void Layer_PasteCanvas::get_times_vfunc(Node::time_set &set) const
 403 {
 404         Node::time_set tset;
 405         if(canvas) tset = canvas->get_times();
 406
 407         Node::time_set::iterator        i = tset.begin(),
 408                                                                         end = tset.end();
 409
 410         //Make sure we offset the time...
 411         //TODO: SOMETHING STILL HAS TO BE DONE WITH THE OTHER DIRECTION
 412         //              (recursing down the tree needs to take this into account too...)
 413         for(; i != end; ++i)
 414         {
 415                 set.insert(*i + time_offset);
 416         }
 417
 418         Layer::get_times_vfunc(set);
 419 }