synfig-studio/trunk/src/gtkmm/workarea.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file workarea.cpp
   3 **      \brief Template Header
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright 2006 Yue Shi Lai
  10 **      Copyright (c) 2007 Chris Moore
  11 **
  12 **      This package is free software; you can redistribute it and/or
  13 **      modify it under the terms of the GNU General Public License as
  14 **      published by the Free Software Foundation; either version 2 of
  15 **      the License, or (at your option) any later version.
  16 **
  17 **      This package is distributed in the hope that it will be useful,
  18 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20 **      General Public License for more details.
  21 **      \endlegal
  22 */
  23 /* ========================================================================= */
  24
  25 /* === H E A D E R S ======================================================= */
  26
  27 #ifdef USING_PCH
  28 #       include "pch.h"
  29 #else
  30 #ifdef HAVE_CONFIG_H
  31 #       include <config.h>
  32 #endif
  33
  34 #include <sigc++/adaptors/hide.h>
  35
  36 #include "workarea.h"
  37 #include "canvasview.h"
  38 #include "app.h"
  39 #include <gtkmm/window.h>
  40 #include <gtkmm/image.h>
  41 #include <gtkmm/drawingarea.h>
  42 #include <gtkmm/ruler.h>
  43 #include <gtkmm/arrow.h>
  44 #include <gtkmm/image.h>
  45 #include <gtkmm/scrollbar.h>
  46 #include <cmath>
  47 #include <sigc++/retype_return.h>
  48 #include <sigc++/retype.h>
  49 #include <sigc++/hide.h>
  50 #include <ETL/misc>
  51
  52 #include <synfig/target_scanline.h>
  53 #include <synfig/target_tile.h>
  54 #include <synfig/surface.h>
  55 #include <synfig/valuenode_composite.h>
  56 #include <synfigapp/canvasinterface.h>
  57 #include "event_mouse.h"
  58 #include "event_layerclick.h"
  59 #include "widget_color.h"
  60 #include <synfig/distance.h>
  61 #include "workarearenderer.h"
  62
  63 #include "renderer_canvas.h"
  64 #include "renderer_grid.h"
  65 #include "renderer_guides.h"
  66 #include "renderer_timecode.h"
  67 #include "renderer_ducks.h"
  68 #include "renderer_dragbox.h"
  69 #include "renderer_bbox.h"
  70 #include "asyncrenderer.h"
  71 #include <gtkmm/frame.h>
  72
  73 #include <synfig/mutex.h>
  74
  75 #include "general.h"
  76
  77 #endif
  78
  79 /* === U S I N G =========================================================== */
  80
  81 using namespace std;
  82 using namespace etl;
  83 using namespace synfig;
  84 using namespace studio;
  85
  86 /* === M A C R O S ========================================================= */
  87
  88 #define RULER_FIX               15
  89
  90 #ifndef stratof
  91 #define stratof(X) (atof((X).c_str()))
  92 #define stratoi(X) (atoi((X).c_str()))
  93 #endif
  94
  95
  96 /* === G L O B A L S ======================================================= */
  97
  98 /* === C L A S S E S ======================================================= */
  99
 100 class studio::WorkAreaTarget : public synfig::Target_Tile
 101 {
 102 public:
 103         WorkArea *workarea;
 104         bool low_res;
 105         int w,h;
 106         int real_tile_w,real_tile_h;
 107         //std::vector<Glib::RefPtr<Gdk::Pixbuf> >::iterator tile_iter;
 108
 109         int twindow_start, twindow_width, twindow_height, twindow_pad;
 110         int refresh_id;
 111
 112         bool onionskin;
 113         bool onion_first_tile;
 114         int onion_layers;
 115
 116         std::list<synfig::Time> onion_skin_queue;
 117
 118         synfig::Mutex mutex;
 119
 120         void set_onion_skin(bool x)
 121         {
 122                 onionskin=x;
 123
 124                 Time time(rend_desc().get_time_start());
 125
 126                 onion_skin_queue.push_back(time);
 127                 //onion_skin_queue.push_back(time-1);
 128                 //onion_skin_queue.push_back(time+1);
 129
 130                 try
 131                 {
 132                         onion_skin_queue.push_back(
 133                                 get_canvas()->keyframe_list().find_prev(
 134                                         time
 135                                 )->get_time()
 136                         );
 137                 }
 138                 catch(...)
 139                 {  }
 140
 141                 try
 142                 {
 143                         onion_skin_queue.push_back(
 144                                 get_canvas()->keyframe_list().find_next(
 145                                         time
 146                                 )->get_time()
 147                         );
 148                 }
 149                 catch(...)
 150                 {  }
 151
 152                 onion_layers=onion_skin_queue.size();
 153
 154                 onion_first_tile=false;
 155         }
 156 public:
 157
 158         WorkAreaTarget(WorkArea *workarea,int w, int h):
 159                 workarea(workarea),
 160                 low_res(workarea->get_low_resolution_flag()),
 161                 w(w),
 162                 h(h),
 163                 real_tile_w(workarea->tile_w),
 164                 real_tile_h(workarea->tile_h),
 165                 refresh_id(workarea->refreshes),
 166                 onionskin(false),
 167                 onion_layers(0)
 168         {
 169                 //set_remove_alpha();
 170                 //set_avoid_time_sync();
 171                 set_clipping(true);
 172                 if(low_res)
 173                 {
 174                         set_tile_w(workarea->tile_w/2);
 175                         set_tile_h(workarea->tile_h/2);
 176                 }
 177                 else
 178                 {
 179                         set_tile_w(workarea->tile_w);
 180                         set_tile_h(workarea->tile_h);
 181                 }
 182                 set_canvas(workarea->get_canvas());
 183                 set_quality(workarea->get_quality());
 184         }
 185
 186         ~WorkAreaTarget()
 187         {
 188                 workarea->queue_draw();
 189         }
 190
 191         virtual bool set_rend_desc(synfig::RendDesc *newdesc)
 192         {
 193                 assert(workarea);
 194                 newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
 195                 if(low_res)
 196                         newdesc->set_wh(w/2,h/2);
 197                 else
 198                         newdesc->set_wh(w,h);
 199
 200                 if(
 201                                 workarea->get_w()!=w
 202                         ||      workarea->get_h()!=h
 203                 ) workarea->set_wh(w,h,4);
 204
 205                 workarea->full_frame=false;
 206
 207                 desc=*newdesc;
 208                 return true;
 209         }
 210
 211         virtual int total_tiles()const
 212         {
 213                 int tw(rend_desc().get_w()/get_tile_w());
 214                 int th(rend_desc().get_h()/get_tile_h());
 215                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 216                 if(rend_desc().get_h()%get_tile_h()!=0)th++;
 217                 return tw*th;
 218         }
 219
 220         virtual int next_frame(Time& time)
 221         {
 222                 synfig::Mutex::Lock lock(mutex);
 223
 224                 if(!onionskin)
 225                         return synfig::Target_Tile::next_frame(time);
 226
 227                 onion_first_tile=(onion_layers==(signed)onion_skin_queue.size());
 228
 229                 if(!onion_skin_queue.empty())
 230                 {
 231                         time=onion_skin_queue.front();
 232                         onion_skin_queue.pop_front();
 233                 }
 234                 else
 235                         return 0;
 236
 237                 return onion_skin_queue.size()+1;
 238         }
 239
 240         virtual int next_tile(int& x, int& y)
 241         {
 242                 synfig::Mutex::Lock lock(mutex);
 243                 //if(workarea->tile_queue.empty()) return 0;
 244
 245                 //int curr_tile(workarea->tile_queue.front());
 246                 //workarea->tile_queue.pop_front();
 247                 int curr_tile(workarea->next_unrendered_tile(refresh_id-onion_skin_queue.size()));
 248                 if(curr_tile<0)
 249                         return 0;
 250
 251                 // Width of the image(in tiles)
 252                 int tw(rend_desc().get_w()/get_tile_w());
 253                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 254
 255                 y=(curr_tile/tw)*get_tile_w();
 256                 x=(curr_tile%tw)*get_tile_h();
 257
 258                 // Mark this tile as "up-to-date"
 259                 if(onionskin)
 260                         workarea->tile_book[curr_tile].second=refresh_id-onion_skin_queue.size();
 261                 else
 262                         workarea->tile_book[curr_tile].second=refresh_id;
 263
 264                 return total_tiles()-curr_tile+1;
 265         }
 266
 267
 268         virtual bool start_frame(synfig::ProgressCallback */*cb*/)
 269         {
 270                 synfig::Mutex::Lock lock(mutex);
 271
 272                 int tw(rend_desc().get_w()/get_tile_w());
 273                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 274                 int th(rend_desc().get_h()/get_tile_h());
 275                 if(rend_desc().get_h()%get_tile_h()!=0)th++;
 276
 277                 twindow_start=0;
 278                 twindow_width=tw;
 279                 twindow_height=th;
 280                 twindow_pad=0;
 281
 282                 workarea->tile_book.resize(total_tiles());
 283                 //tile_iter=workarea->tile_book.begin()+twindow_start;
 284                 return true;
 285         }
 286
 287         static void free_buff(const guint8 *x) { free(const_cast<guint8*>(x)); }
 288
 289         virtual bool add_tile(const synfig::Surface &surface, int x, int y)
 290         {
 291                 synfig::Mutex::Lock lock(mutex);
 292                 assert(surface);
 293
 294                 PixelFormat pf(PF_RGB);
 295
 296                 const int total_bytes(get_tile_w()*get_tile_h()*synfig::channels(pf));
 297
 298                 unsigned char *buffer((unsigned char*)malloc(total_bytes));
 299
 300                 if(!surface || !buffer)
 301                         return false;
 302                 {
 303                         unsigned char *dest(buffer);
 304                         const Color *src(surface[0]);
 305                         int w(get_tile_w());
 306                         int h(get_tile_h());
 307                         int x(surface.get_w()*surface.get_h());
 308                         //if(low_res) { w/=2,h/=2; }
 309                         Color dark(0.6,0.6,0.6);
 310                         Color lite(0.8,0.8,0.8);
 311                         for(int i=0;i<x;i++)
 312                                 dest=Color2PixelFormat(
 313                                         Color::blend(
 314                                                 (*(src++)),
 315                                                 ((i/surface.get_w())*8/h+(i%surface.get_w())*8/w)&1?dark:lite,
 316                                                 1.0f
 317                                         ).clamped(),
 318                                         pf,dest,App::gamma
 319                                 );
 320                 }
 321
 322                 x/=get_tile_w();
 323                 y/=get_tile_h();
 324                 int tw(rend_desc().get_w()/get_tile_w());
 325                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 326                 unsigned int index=y*tw+x;
 327
 328                 // Sanity check
 329                 if(index>workarea->tile_book.size())
 330                         return false;
 331
 332                 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
 333
 334                 pixbuf=Gdk::Pixbuf::create_from_data(
 335                         buffer, // pointer to the data
 336                         Gdk::COLORSPACE_RGB, // the colorspace
 337                         ((pf&PF_A)==PF_A), // has alpha?
 338                         8, // bits per sample
 339                         surface.get_w(),        // width
 340                         surface.get_h(),        // height
 341                         surface.get_w()*synfig::channels(pf), // stride (pitch)
 342                         sigc::ptr_fun(&WorkAreaTarget::free_buff)
 343                 );
 344
 345                 if(low_res)
 346                 {
 347                         // We need to scale up
 348                         pixbuf=pixbuf->scale_simple(
 349                                 surface.get_w()*2,
 350                                 surface.get_h()*2,
 351                                 Gdk::INTERP_NEAREST
 352                         );
 353                 }
 354
 355                 if(!onionskin || onion_first_tile || !workarea->tile_book[index].first)
 356                 {
 357                         workarea->tile_book[index].first=pixbuf;
 358                 }
 359                 else
 360                 {
 361                         pixbuf->composite(
 362                                 workarea->tile_book[index].first, // Dest
 363                                 0,//int dest_x
 364                                 0,//int dest_y
 365                                 pixbuf->get_width(), // dest width
 366                                 pixbuf->get_height(), // dest_height,
 367                                 0, // double offset_x
 368                                 0, // double offset_y
 369                                 1, // double scale_x
 370                                 1, // double scale_y
 371                                 Gdk::INTERP_NEAREST, // interp
 372                                 255/(onion_layers-onion_skin_queue.size()+1) //int overall_alpha
 373                         );
 374                 }
 375
 376                 //if(index%2)
 377                         workarea->queue_draw();
 378                 assert(workarea->tile_book[index].first);
 379                 return true;
 380         }
 381
 382         virtual void end_frame()
 383         {
 384                 //workarea->queue_draw();
 385         }
 386 };
 387
 388
 389 class studio::WorkAreaTarget_Full : public synfig::Target_Scanline
 390 {
 391 public:
 392         WorkArea *workarea;
 393         bool low_res;
 394         int w,h;
 395         int real_tile_w,real_tile_h;
 396         //std::vector<Glib::RefPtr<Gdk::Pixbuf> >::iterator tile_iter;
 397
 398         int twindow_start, twindow_width, twindow_height, twindow_pad;
 399         int refresh_id;
 400
 401         bool onionskin;
 402         bool onion_first_tile;
 403         int onion_layers;
 404
 405         Surface surface;
 406
 407         std::list<synfig::Time> onion_skin_queue;
 408
 409         void set_onion_skin(bool x)
 410         {
 411                 onionskin=x;
 412
 413                 Time time(rend_desc().get_time_start());
 414
 415                 onion_skin_queue.push_back(time);
 416                 //onion_skin_queue.push_back(time-1);
 417                 //onion_skin_queue.push_back(time+1);
 418                 if(!onionskin)
 419                         return;
 420
 421                 try
 422                 {
 423                         onion_skin_queue.push_back(
 424                                 get_canvas()->keyframe_list().find_prev(
 425                                         time
 426                                 )->get_time()
 427                         );
 428                 }
 429                 catch(...)
 430                 {  }
 431
 432                 try
 433                 {
 434                         onion_skin_queue.push_back(
 435                                 get_canvas()->keyframe_list().find_next(
 436                                         time
 437                                 )->get_time()
 438                         );
 439                 }
 440                 catch(...)
 441                 {  }
 442
 443                 onion_layers=onion_skin_queue.size();
 444
 445                 onion_first_tile=false;
 446         }
 447 public:
 448
 449         WorkAreaTarget_Full(WorkArea *workarea,int w, int h):
 450                 workarea(workarea),
 451                 low_res(workarea->get_low_resolution_flag()),
 452                 w(w),
 453                 h(h),
 454                 refresh_id(workarea->refreshes),
 455                 onionskin(false),
 456                 onion_layers(0)
 457         {
 458                 set_canvas(workarea->get_canvas());
 459                 set_quality(workarea->get_quality());
 460         }
 461
 462         ~WorkAreaTarget_Full()
 463         {
 464         }
 465
 466         virtual bool set_rend_desc(synfig::RendDesc *newdesc)
 467         {
 468                 assert(workarea);
 469                 newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
 470                 if(low_res)
 471                         newdesc->set_wh(w/2,h/2);
 472                 else
 473                         newdesc->set_wh(w,h);
 474
 475                 if(
 476                                 workarea->get_w()!=w
 477                         ||      workarea->get_h()!=h
 478                 ) workarea->set_wh(w,h,4);
 479
 480                 surface.set_wh(newdesc->get_w(),newdesc->get_h());
 481
 482                 desc=*newdesc;
 483                 workarea->full_frame=true;
 484                 workarea->tile_book.resize(1);
 485                 return true;
 486         }
 487
 488         virtual int next_frame(Time& time)
 489         {
 490                 // Mark this tile as "up-to-date"
 491                 if(onionskin)
 492                         workarea->tile_book[0].second=refresh_id-onion_skin_queue.size();
 493                 else
 494                         workarea->tile_book[0].second=refresh_id;
 495
 496                 if(!onionskin)
 497                         return synfig::Target_Scanline::next_frame(time);
 498
 499                 onion_first_tile=(onion_layers==(signed)onion_skin_queue.size());
 500
 501                 if(!onion_skin_queue.empty())
 502                 {
 503                         time=onion_skin_queue.front();
 504                         onion_skin_queue.pop_front();
 505                 }
 506                 else
 507                         return 0;
 508                 return onion_skin_queue.size()+1;
 509         }
 510
 511
 512         virtual bool start_frame(synfig::ProgressCallback */*cb*/)
 513         {
 514                 return true;
 515         }
 516
 517         virtual Color * start_scanline(int scanline)
 518         {
 519                 return surface[scanline];
 520         }
 521
 522         virtual bool end_scanline()
 523         {
 524                 return true;
 525         }
 526
 527         static void free_buff(const guint8 *x) { free(const_cast<guint8*>(x)); }
 528
 529         virtual void end_frame()
 530         {
 531                 assert(surface);
 532
 533                 PixelFormat pf(PF_RGB);
 534
 535                 const int total_bytes(surface.get_w()*surface.get_h()*synfig::channels(pf));
 536
 537                 unsigned char *buffer((unsigned char*)malloc(total_bytes));
 538
 539                 if(!surface || !buffer)
 540                         return;
 541                 {
 542                         unsigned char *dest(buffer);
 543                         const Color *src(surface[0]);
 544                         int w(surface.get_w());
 545                         //int h(surface.get_h());
 546                         int x(surface.get_w()*surface.get_h());
 547                         //if(low_res) { w/=2,h/=2; }
 548                         Color dark(0.6,0.6,0.6);
 549                         Color lite(0.8,0.8,0.8);
 550                         int tw=workarea->tile_w;
 551                         int th=workarea->tile_h;
 552                         if(low_res)
 553                         {
 554                                 tw/=2;
 555                                 th/=2;
 556                         }
 557                         for(int i=0;i<x;i++)
 558                                 dest=Color2PixelFormat(
 559                                         Color::blend(
 560                                                 (*(src++)),
 561                                                 ((i/w)*8/th+(i%w)*8/tw)&1?dark:lite,
 562                                                 1.0f
 563                                         ).clamped(),
 564                                         pf,
 565                                         dest,
 566                                         App::gamma
 567                                 );
 568                 }
 569
 570                 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
 571
 572                 pixbuf=Gdk::Pixbuf::create_from_data(
 573                         buffer, // pointer to the data
 574                         Gdk::COLORSPACE_RGB, // the colorspace
 575                         ((pf&PF_A)==PF_A), // has alpha?
 576                         8, // bits per sample
 577                         surface.get_w(),        // width
 578                         surface.get_h(),        // height
 579                         surface.get_w()*synfig::channels(pf), // stride (pitch)
 580                         sigc::ptr_fun(&WorkAreaTarget::free_buff)
 581                 );
 582
 583                 if(low_res)
 584                 {
 585                         // We need to scale up
 586                         pixbuf=pixbuf->scale_simple(
 587                                 surface.get_w()*2,
 588                                 surface.get_h()*2,
 589                                 Gdk::INTERP_NEAREST
 590                         );
 591                 }
 592
 593                 int index=0;
 594
 595                 if(!onionskin || onion_first_tile || !workarea->tile_book[index].first)
 596                 {
 597                         workarea->tile_book[index].first=pixbuf;
 598                 }
 599                 else
 600                 {
 601                         pixbuf->composite(
 602                                 workarea->tile_book[index].first, // Dest
 603                                 0,//int dest_x
 604                                 0,//int dest_y
 605                                 pixbuf->get_width(), // dest width
 606                                 pixbuf->get_height(), // dest_height,
 607                                 0, // double offset_x
 608                                 0, // double offset_y
 609                                 1, // double scale_x
 610                                 1, // double scale_y
 611                                 Gdk::INTERP_NEAREST, // interp
 612                                 255/(onion_layers-onion_skin_queue.size()+1) //int overall_alpha
 613                         );
 614                 }
 615
 616                 workarea->queue_draw();
 617                 assert(workarea->tile_book[index].first);
 618         }
 619 };
 620
 621
 622
 623
 624 /* === M E T H O D S ======================================================= */
 625
 626
 627 WorkArea::WorkArea(etl::loose_handle<synfigapp::CanvasInterface> canvas_interface):
 628         Gtk::Table(4+RULER_FIX, 3, false),
 629         canvas_interface(canvas_interface),
 630         canvas(canvas_interface->get_canvas()),
 631         scrollx_adjustment(0,-4,4,0.01,0.1),
 632         scrolly_adjustment(0,-4,4,0.01,0.1),
 633         w(TILE_SIZE),
 634         h(TILE_SIZE),
 635         last_event_time(0),
 636         progresscallback(0),
 637         dragging(DRAG_NONE),
 638         show_grid(false),
 639         tile_w(TILE_SIZE),
 640         tile_h(TILE_SIZE),
 641         timecode_width(0),
 642         timecode_height(0)
 643 {
 644         show_guides=true;
 645         curr_input_device=0;
 646         full_frame=false;
 647         allow_duck_clicks=true;
 648         allow_layer_clicks=true;
 649         render_idle_func_id=0;
 650         zoom=prev_zoom=1.0;
 651         quality=10;
 652         rendering=false;
 653         canceled_=false;
 654         low_resolution=true;
 655         pw=0.001;
 656         ph=0.001;
 657         last_focus_point=Point(0,0);
 658         onion_skin=false;
 659         queued=false;
 660         dirty_trap_enabled=false;
 661         solid_lines=true;
 662
 663         dirty_trap_queued=0;
 664
 665         meta_data_lock=false;
 666
 667         insert_renderer(new Renderer_Canvas,    000);
 668         insert_renderer(new Renderer_Grid,              100);
 669         insert_renderer(new Renderer_Guides,    200);
 670         insert_renderer(new Renderer_Ducks,             300);
 671         insert_renderer(new Renderer_BBox,              399);
 672         insert_renderer(new Renderer_Dragbox,   400);
 673         insert_renderer(new Renderer_Timecode,  500);
 674
 675         signal_duck_selection_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 676         signal_strokes_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 677         signal_grid_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 678         signal_grid_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::save_meta_data));
 679         signal_sketch_saved().connect(sigc::mem_fun(*this,&studio::WorkArea::save_meta_data));
 680
 681         // Not that it really makes a difference... (setting this to zero, that is)
 682         refreshes=0;
 683
 684         drawing_area=manage(new class Gtk::DrawingArea());
 685         drawing_area->show();
 686         drawing_area->set_extension_events(Gdk::EXTENSION_EVENTS_ALL);
 687
 688         drawing_frame=manage(new Gtk::Frame);
 689         drawing_frame->add(*drawing_area);
 690         //drawing_frame->set_shadow_type(Gtk::SHADOW_NONE);
 691         //drawing_frame->property_border_width()=5;
 692         //drawing_frame->modify_fg(Gtk::STATE_NORMAL,Gdk::Color("#00ffff"));
 693         //drawing_frame->modify_base(Gtk::STATE_NORMAL,Gdk::Color("#ff00ff"));
 694         /*drawing_frame->modify_fg(Gtk::STATE_ACTIVE,Gdk::Color("#00ffff"));
 695         drawing_frame->modify_base(Gtk::STATE_ACTIVE,Gdk::Color("#ff00ff"));
 696         drawing_frame->modify_bg(Gtk::STATE_ACTIVE,Gdk::Color("#00ff00"));
 697         drawing_frame->modify_fg(Gtk::STATE_INSENSITIVE,Gdk::Color("#00ffff"));
 698         drawing_frame->modify_base(Gtk::STATE_INSENSITIVE,Gdk::Color("#ff00ff"));
 699         drawing_frame->modify_bg(Gtk::STATE_INSENSITIVE,Gdk::Color("#00ff00"));
 700         drawing_frame->modify_fg(Gtk::STATE_SELECTED,Gdk::Color("#00ffff"));
 701         drawing_frame->modify_base(Gtk::STATE_SELECTED,Gdk::Color("#ff00ff"));
 702         drawing_frame->modify_bg(Gtk::STATE_SELECTED,Gdk::Color("#00ff00"));
 703         */
 704         //drawing_frame->set_state(Gtk::STATE_NORMAL);
 705
 706         drawing_frame->show();
 707
 708         attach(*drawing_frame, 1, 3+RULER_FIX, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 709
 710         Gtk::IconSize iconsize=Gtk::IconSize::from_name("synfig-small_icon");
 711
 712
 713         // Create the vertical and horizontal rulers
 714         vruler = manage(new class Gtk::VRuler());
 715         hruler = manage(new class Gtk::HRuler());
 716         vruler->set_metric(Gtk::PIXELS);
 717         hruler->set_metric(Gtk::PIXELS);
 718         vruler->show();
 719         hruler->show();
 720         attach(*vruler, 0, 1, 1, 2, Gtk::SHRINK|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 721         attach(*hruler, 1, 3+RULER_FIX, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::SHRINK|Gtk::FILL, 0, 0);
 722         hruler->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_hruler_event));
 723         vruler->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_vruler_event));
 724         hruler->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 725         vruler->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 726
 727         // Create the menu button
 728         menubutton=manage(new class Gtk::Button());
 729         Gtk::Arrow *arrow1 = manage(new class Gtk::Arrow(Gtk::ARROW_RIGHT, Gtk::SHADOW_OUT));
 730         menubutton->add(*arrow1);
 731         menubutton->show_all();
 732         menubutton->signal_pressed().connect(sigc::mem_fun(*this, &WorkArea::popup_menu));
 733         attach(*menubutton, 0, 1, 0, 1, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
 734
 735
 736
 737         Gtk::VScrollbar *vscrollbar1 = manage(new class Gtk::VScrollbar(*get_scrolly_adjustment()));
 738         Gtk::HScrollbar *hscrollbar1 = manage(new class Gtk::HScrollbar(*get_scrollx_adjustment()));
 739         vscrollbar1->show();
 740         hscrollbar1->show();
 741         attach(*vscrollbar1, 3+RULER_FIX, 4+RULER_FIX, 1, 2, Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 742         attach(*hscrollbar1, 2+RULER_FIX, 3+RULER_FIX, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::FILL, 0, 0);
 743
 744         ZoomDial *zoomdial=manage(new class ZoomDial(iconsize));
 745         zoomdial->signal_zoom_in().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_in));
 746         zoomdial->signal_zoom_out().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_out));
 747         zoomdial->signal_zoom_fit().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_fit));
 748         zoomdial->signal_zoom_norm().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_norm));
 749         zoomdial->show();
 750         attach(*zoomdial, 0, 2+RULER_FIX, 2, 3, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
 751
 752         drawing_area->add_events(Gdk::KEY_PRESS_MASK | Gdk::KEY_RELEASE_MASK);
 753         add_events(Gdk::KEY_PRESS_MASK);
 754         drawing_area->add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
 755         drawing_area->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::POINTER_MOTION_MASK);
 756
 757         // ----------------- Attach signals
 758
 759         drawing_area->signal_expose_event().connect(sigc::mem_fun(*this, &WorkArea::refresh));
 760         drawing_area->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_drawing_area_event));
 761         drawing_area->signal_size_allocate().connect(sigc::hide(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info)));
 762
 763
 764
 765         canvas_interface->signal_rend_desc_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 766         // When either of the scrolling adjustments change, then redraw.
 767         get_scrollx_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::queue_scroll));
 768         get_scrolly_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::queue_scroll));
 769         get_scrollx_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 770         get_scrolly_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 771
 772         get_canvas()->signal_meta_data_changed("grid_size").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 773         get_canvas()->signal_meta_data_changed("grid_snap").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 774         get_canvas()->signal_meta_data_changed("grid_show").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 775         get_canvas()->signal_meta_data_changed("guide_show").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 776         get_canvas()->signal_meta_data_changed("guide_x").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 777         get_canvas()->signal_meta_data_changed("guide_y").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 778         get_canvas()->signal_meta_data_changed("onion_skin").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 779         get_canvas()->signal_meta_data_changed("guide_snap").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 780         get_canvas()->signal_meta_data_changed("sketch").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 781         get_canvas()->signal_meta_data_changed("solid_lines").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 782
 783         queued=false;
 784         meta_data_lock=false;
 785         set_focus_point(Point(0,0));
 786
 787
 788         load_meta_data();
 789         // Load sketch
 790         {
 791                 String data(canvas->get_meta_data("sketch"));
 792                 if(!data.empty())
 793                 {
 794                         if(!load_sketch(data))
 795                                 load_sketch(dirname(canvas->get_file_name())+ETL_DIRECTORY_SEPARATOR+basename(data));
 796                 }
 797         }
 798
 799         hruler->property_max_size()=double(10.0);
 800         vruler->property_max_size()=double(10.0);
 801
 802         drawing_area->set_flags(drawing_area->get_flags()|Gtk::CAN_FOCUS);
 803 }
 804
 805 WorkArea::~WorkArea()
 806 {
 807 //      delete [] buffer;
 808
 809         // don't leave the render function queued if we are about to vanish;
 810         // that causes crashes
 811         if(render_idle_func_id)
 812                 render_idle_func_id=0;
 813 }
 814
 815 bool
 816 WorkArea::get_updating()const
 817 {
 818         return App::single_threaded && async_renderer && async_renderer->updating;
 819 }
 820
 821 void
 822 WorkArea::stop_updating(bool cancel)
 823 {
 824         async_renderer->stop();
 825         if (cancel) canceled_=true;
 826 }
 827
 828 void
 829 WorkArea::save_meta_data()
 830 {
 831         if(meta_data_lock)
 832                 return;
 833         meta_data_lock=true;
 834
 835         Vector s(get_grid_size());
 836         canvas_interface->set_meta_data("grid_size",strprintf("%f %f",s[0],s[1]));
 837         canvas_interface->set_meta_data("grid_snap",get_grid_snap()?"1":"0");
 838         canvas_interface->set_meta_data("guide_snap",get_guide_snap()?"1":"0");
 839         canvas_interface->set_meta_data("guide_show",get_show_guides()?"1":"0");
 840         canvas_interface->set_meta_data("grid_show",show_grid?"1":"0");
 841         canvas_interface->set_meta_data("onion_skin",onion_skin?"1":"0");
 842         {
 843                 String data;
 844                 GuideList::const_iterator iter;
 845                 for(iter=get_guide_list_x().begin();iter!=get_guide_list_x().end();++iter)
 846                 {
 847                         if(!data.empty())
 848                                 data+=' ';
 849                         data+=strprintf("%f",*iter);
 850                 }
 851                 if(!data.empty())
 852                         canvas_interface->set_meta_data("guide_x",data);
 853
 854                 data.clear();
 855                 for(iter=get_guide_list_y().begin();iter!=get_guide_list_y().end();++iter)
 856                 {
 857                         if(!data.empty())
 858                                 data+=' ';
 859                         data+=strprintf("%f",*iter);
 860                 }
 861                 if(!data.empty())
 862                         canvas_interface->set_meta_data("guide_y",data);
 863         }
 864
 865         if(get_sketch_filename().size())
 866         {
 867                 if(dirname(canvas->get_file_name())==dirname(get_sketch_filename()))
 868                         canvas_interface->set_meta_data("sketch",basename(get_sketch_filename()));
 869                 else
 870                         canvas_interface->set_meta_data("sketch",get_sketch_filename());
 871         }
 872
 873         meta_data_lock=false;
 874 }
 875
 876 void
 877 WorkArea::load_meta_data()
 878 {
 879         if(meta_data_lock)
 880                 return;
 881         meta_data_lock=true;
 882
 883         String data;
 884
 885         data=canvas->get_meta_data("grid_size");
 886         if(!data.empty())
 887         {
 888                 float gx(get_grid_size()[0]),gy(get_grid_size()[1]);
 889
 890                 String::iterator iter(find(data.begin(),data.end(),' '));
 891                 String tmp(data.begin(),iter);
 892
 893                 if(!tmp.empty())
 894                         gx=stratof(tmp);
 895                 else
 896                         synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 897
 898                 if(iter==data.end())
 899                         tmp.clear();
 900                 else
 901                         tmp=String(iter+1,data.end());
 902
 903                 if(!tmp.empty())
 904                         gy=stratof(tmp);
 905                 else
 906                         synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 907
 908                 set_grid_size(Vector(gx,gy));
 909         }
 910
 911         data=canvas->get_meta_data("grid_show");
 912         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 913                 show_grid=true;
 914         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 915                 show_grid=false;
 916
 917         data=canvas->get_meta_data("solid_lines");
 918         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 919                 solid_lines=true;
 920         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 921                 solid_lines=false;
 922
 923         data=canvas->get_meta_data("guide_show");
 924         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 925                 show_guides=true;
 926         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 927                 show_guides=false;
 928
 929         data=canvas->get_meta_data("grid_snap");
 930         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 931                 set_grid_snap(true);
 932         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 933                 set_grid_snap(false);
 934
 935         data=canvas->get_meta_data("guide_snap");
 936         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 937                 set_guide_snap(true);
 938         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 939                 set_guide_snap(false);
 940
 941         data=canvas->get_meta_data("onion_skin");
 942         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 943                 set_onion_skin(true);
 944         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 945                 set_onion_skin(false);
 946
 947         data=canvas->get_meta_data("guide_x");
 948         get_guide_list_x().clear();
 949         while(!data.empty())
 950         {
 951                 String::iterator iter(find(data.begin(),data.end(),' '));
 952                 String guide(data.begin(),iter);
 953
 954                 if(!guide.empty())
 955                         get_guide_list_x().push_back(stratof(guide));
 956
 957                 if(iter==data.end())
 958                         data.clear();
 959                 else
 960                         data=String(iter+1,data.end());
 961         }
 962         //sort(get_guide_list_x());
 963
 964         data=canvas->get_meta_data("guide_y");
 965         get_guide_list_y().clear();
 966         while(!data.empty())
 967         {
 968                 String::iterator iter(find(data.begin(),data.end(),' '));
 969                 String guide(data.begin(),iter);
 970
 971                 if(!guide.empty())
 972                         get_guide_list_y().push_back(stratof(guide));
 973
 974                 if(iter==data.end())
 975                         data.clear();
 976                 else
 977                         data=String(iter+1,data.end());
 978         }
 979         //sort(get_guide_list_y());
 980
 981         meta_data_lock=false;
 982         queue_draw();
 983 }
 984
 985 void
 986 WorkArea::set_onion_skin(bool x)
 987 {
 988         if(onion_skin==x)
 989                 return;
 990         onion_skin=x;
 991         save_meta_data();
 992         queue_render_preview();
 993         signal_onion_skin_changed()();
 994 }
 995
 996 bool
 997 WorkArea::get_onion_skin()const
 998 {
 999         return onion_skin;
1000 }
1001
1002 void
1003 WorkArea::enable_grid()
1004 {
1005         show_grid=true;
1006         save_meta_data();
1007         queue_draw();
1008 }
1009
1010 void
1011 WorkArea::disable_grid()
1012 {
1013         show_grid=false;
1014         save_meta_data();
1015         queue_draw();
1016 }
1017
1018 void
1019 WorkArea::set_show_guides(bool x)
1020 {
1021         show_guides=x;
1022         save_meta_data();
1023         queue_draw();
1024 }
1025
1026 void
1027 WorkArea::toggle_grid()
1028 {
1029         show_grid=!show_grid;
1030         save_meta_data();
1031         queue_draw();
1032 }
1033
1034 void
1035 WorkArea::set_low_resolution_flag(bool x)
1036 {
1037         if(x!=low_resolution)
1038         {
1039                 low_resolution=x;
1040                 queue_render_preview();
1041         }
1042 }
1043
1044 void
1045 WorkArea::toggle_low_resolution_flag()
1046 {
1047         set_low_resolution_flag(!get_low_resolution_flag());
1048 }
1049
1050 void
1051 WorkArea::popup_menu()
1052 {
1053         signal_popup_menu()();
1054 }
1055
1056 void
1057 WorkArea::set_grid_size(const synfig::Vector &s)
1058 {
1059         Duckmatic::set_grid_size(s);
1060         save_meta_data();
1061         queue_draw();
1062 }
1063
1064 void
1065 WorkArea::set_focus_point(const synfig::Point &point)
1066 {
1067         // These next three lines try to ensure that we place the
1068         // focus on a pixel boundary
1069         /*Point adjusted(point[0]/abs(get_pw()),point[1]/abs(get_ph()));
1070         adjusted[0]=(abs(adjusted[0]-floor(adjusted[0]))<0.5)?floor(adjusted[0])*abs(get_pw()):ceil(adjusted[0])*abs(get_ph());
1071         adjusted[1]=(abs(adjusted[1]-floor(adjusted[1]))<0.5)?floor(adjusted[1])*abs(get_ph()):ceil(adjusted[1])*abs(get_ph());
1072         */
1073         const synfig::Point& adjusted(point);
1074
1075         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1076         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1077         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1078
1079         get_scrollx_adjustment()->set_value(adjusted[0]*x_factor);
1080         get_scrolly_adjustment()->set_value(adjusted[1]*y_factor);
1081 }
1082
1083 synfig::Point
1084 WorkArea::get_focus_point()const
1085 {
1086         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1087         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1088         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1089
1090         return synfig::Point(get_scrollx_adjustment()->get_value()*x_factor, get_scrolly_adjustment()->get_value()*y_factor);
1091 }
1092
1093 bool
1094 WorkArea::set_wh(int W, int H,int CHAN)
1095 {
1096         // If our size is already set, don't set it again
1097         if(W==w && H==h && CHAN==bpp)
1098         {
1099                 return true;
1100         }
1101         if(W<=0 || H<=0 || CHAN<=0)
1102                 return false;
1103
1104         assert(W>0);
1105         assert(H>0);
1106         assert(CHAN>0);
1107
1108         // Set all of the parameters
1109         w=W;
1110         h=H;
1111         bpp=CHAN;
1112
1113         refresh_dimension_info();
1114
1115         tile_book.clear();
1116
1117         return true;
1118 }
1119
1120 bool
1121 WorkArea::on_key_press_event(GdkEventKey* event)
1122 {
1123         if(get_selected_ducks().empty())
1124                 return false;
1125
1126         Real multiplier(1.0);
1127
1128         if(Gdk::ModifierType(event->state)&GDK_SHIFT_MASK)
1129                 multiplier=10.0;
1130
1131         Vector nudge;
1132         switch(event->keyval)
1133         {
1134                 case GDK_Left:
1135                         nudge=Vector(-pw,0);
1136                         break;
1137                 case GDK_Right:
1138                         nudge=Vector(pw,0);
1139                         break;
1140                 case GDK_Up:
1141                         nudge=Vector(0,-ph);
1142                         break;
1143                 case GDK_Down:
1144                         nudge=Vector(0,ph);
1145                         break;
1146                 default:
1147                         return false;
1148                         break;
1149         }
1150
1151         synfigapp::Action::PassiveGrouper grouper(instance.get(),"Nudge");
1152
1153         // Grid snap does not apply to nudging
1154         bool grid_snap_holder(get_grid_snap());
1155         bool guide_snap_holder(get_guide_snap());
1156         set_grid_snap(false);
1157
1158         try {
1159                 start_duck_drag(get_selected_duck()->get_trans_point());
1160                 translate_selected_ducks(get_selected_duck()->get_trans_point()+nudge*multiplier);
1161                 end_duck_drag();
1162         }
1163         catch(String)
1164         {
1165                 canvas_view->duck_refresh_flag=true;
1166                 canvas_view->queue_rebuild_ducks();
1167         }
1168
1169         set_grid_snap(grid_snap_holder);
1170         set_guide_snap(guide_snap_holder);
1171
1172         return true;
1173 }
1174
1175 bool
1176 WorkArea::on_drawing_area_event(GdkEvent *event)
1177 {
1178         synfig::Point mouse_pos;
1179     float bezier_click_pos;
1180         const float radius((abs(pw)+abs(ph))*4);
1181         int button_pressed(0);
1182         float pressure(0);
1183         bool is_mouse(false);
1184         Gdk::ModifierType modifier(Gdk::ModifierType(0));
1185
1186         drawing_area->grab_focus();
1187
1188         // Handle input stuff
1189         if(
1190                 event->any.type==GDK_MOTION_NOTIFY ||
1191                 event->any.type==GDK_BUTTON_PRESS ||
1192                 event->any.type==GDK_2BUTTON_PRESS ||
1193                 event->any.type==GDK_3BUTTON_PRESS ||
1194                 event->any.type==GDK_BUTTON_RELEASE
1195         )
1196         {
1197                 GdkDevice *device;
1198                 if(event->any.type==GDK_MOTION_NOTIFY)
1199                 {
1200                         device=event->motion.device;
1201                         modifier=Gdk::ModifierType(event->motion.state);
1202                 }
1203                 else
1204                 {
1205                         device=event->button.device;
1206                         modifier=Gdk::ModifierType(event->button.state);
1207                 }
1208
1209                 // Make sure we recognize the device
1210                 if(curr_input_device)
1211                 {
1212                         if(curr_input_device!=device)
1213                         {
1214                                 assert(device);
1215                                 curr_input_device=device;
1216                                 signal_input_device_changed()(curr_input_device);
1217                         }
1218                 }
1219                 else if(device)
1220                 {
1221                         curr_input_device=device;
1222                         signal_input_device_changed()(curr_input_device);
1223                 }
1224
1225                 assert(curr_input_device);
1226
1227                 // Calculate the position of the
1228                 // input device in canvas coordinates
1229                 // and the buttons
1230                 if(!event->button.axes)
1231                 {
1232                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->button.x,event->button.y)));
1233                         button_pressed=event->button.button;
1234                         pressure=1.0f;
1235                         is_mouse=true;
1236                         if(isnan(event->button.x) || isnan(event->button.y))
1237                                 return false;
1238                 }
1239                 else
1240                 {
1241                         double x(event->button.axes[0]);
1242                         double y(event->button.axes[1]);
1243                         if(isnan(x) || isnan(y))
1244                                 return false;
1245
1246                         pressure=event->button.axes[2];
1247                         //synfig::info("pressure=%f",pressure);
1248                         pressure-=0.04f;
1249                         pressure/=1.0f-0.04f;
1250
1251
1252                         assert(!isnan(pressure));
1253
1254                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)));
1255
1256                         button_pressed=event->button.button;
1257
1258                         if(button_pressed==1 && pressure<0 && (event->any.type!=GDK_BUTTON_RELEASE && event->any.type!=GDK_BUTTON_PRESS))
1259                                 button_pressed=0;
1260                         if(pressure<0)
1261                                 pressure=0;
1262
1263                         //if(event->any.type==GDK_BUTTON_PRESS && button_pressed)
1264                         //      synfig::info("Button pressed on input device = %d",event->button.button);
1265
1266                         //if(event->button.axes[2]>0.1)
1267                         //      button_pressed=1;
1268                         //else
1269                         //      button_pressed=0;
1270                 }
1271         }
1272         // GDK mouse scrolling events
1273         else if(event->any.type==GDK_SCROLL)
1274         {
1275                 // GDK information needed to properly interpret mouse
1276                 // scrolling events are: scroll.state, scroll.x/scroll.y, and
1277                 // scroll.direction. The value of scroll.direction will be
1278                 // obtained later.
1279
1280                 modifier=Gdk::ModifierType(event->scroll.state);
1281                 mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->scroll.x,event->scroll.y)));
1282         }
1283
1284         // Handle the renderables
1285         {
1286                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
1287                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
1288                 {
1289                         if((*iter)->get_enabled())
1290                                 if((*iter)->event_vfunc(event))
1291                                 {
1292                                         // Event handled. Return true.
1293                                         return true;
1294                                 }
1295                 }
1296         }
1297
1298         // Event hasn't been handled, pass it down
1299         switch(event->type)
1300     {
1301         case GDK_BUTTON_PRESS:
1302                 {
1303                 switch(button_pressed)
1304                 {
1305                 case 1: // Attempt to click on a duck
1306                 {
1307                         etl::handle<Duck> duck;
1308                         dragging=DRAG_NONE;
1309
1310                         if(allow_duck_clicks)
1311                         {
1312                                 duck=find_duck(mouse_pos,radius);
1313
1314                                 if(duck)
1315                                 {
1316                                         // make a note of whether the duck we click on was selected or not
1317                                         if(duck_is_selected(duck))
1318                                                 clicked_duck=duck;
1319                                         else
1320                                         {
1321                                                 clicked_duck=0;
1322                                                 // if CTRL isn't pressed, clicking an unselected duck will unselect all other ducks
1323                                                 if(!(modifier&GDK_CONTROL_MASK))
1324                                                         clear_selected_ducks();
1325                                                 select_duck(duck);
1326                                         }
1327                                 }
1328                         }
1329                         //else
1330                         //      clear_selected_ducks();
1331
1332
1333
1334                         selected_bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1335                         if(duck && duck->get_editable())
1336                         {
1337                                 //get_selected_duck()->signal_user_click(0)();
1338                                 //if(clicked_duck)clicked_duck->signal_user_click(0)();
1339
1340                                 // if the user is holding shift while clicking on a tangent duck, consider splitting the tangent
1341                                 if (event->motion.state&GDK_SHIFT_MASK && duck->get_type() == Duck::TYPE_TANGENT)
1342                                 {
1343                                         synfigapp::ValueDesc value_desc = duck->get_value_desc();
1344
1345                                         // we have the tangent, but need the vertex - that's the parent
1346                                         if (value_desc.parent_is_value_node()) {
1347                                                 ValueNode_Composite::Handle parent_value_node = value_desc.get_parent_value_node();
1348
1349                                                 // if the tangent isn't split, then split it
1350                                                 if (!((*(parent_value_node->get_link("split")))(get_time()).get(bool())))
1351                                                 {
1352                                                         get_canvas_view()->canvas_interface()->
1353                                                                 change_value(synfigapp::ValueDesc(parent_value_node,
1354                                                                                                                                   parent_value_node->get_link_index_from_name("split")),
1355                                                                                          true);
1356                                                         // rebuild the ducks from scratch, so the tangents ducks aren't connected
1357                                                         get_canvas_view()->rebuild_ducks();
1358
1359                                                         // reprocess the mouse click
1360                                                         return on_drawing_area_event(event);
1361                                                 }
1362                                         } else {
1363                                                 // I don't know how to access the vertex from the tangent duck when originally drawing the bline in the bline tool
1364
1365                                                 // synfig::ValueNode::Handle vn = value_desc.get_value_node();
1366                                                 synfig::info("parent isn't value node?  shift-drag-tangent doesn't work in bline tool yet...");
1367                                         }
1368                                 }
1369
1370                                 dragging=DRAG_DUCK;
1371                                 drag_point=mouse_pos;
1372                                 //drawing_area->queue_draw();
1373                                 start_duck_drag(mouse_pos);
1374                                 get_canvas_view()->reset_cancel_status();
1375                                 return true;
1376                         }
1377 // I commented out this section because
1378 // it was causing issues when rotoscoping.
1379 // At the moment, we don't need it, so
1380 // this was the easiest way to fix the problem.
1381 /*
1382                         else
1383                         if(selected_bezier)
1384                         {
1385                                 selected_duck=0;
1386                                 selected_bezier->signal_user_click(0)(bezier_click_pos);
1387                         }
1388 */
1389                         else
1390                         {
1391                                 //clear_selected_ducks();
1392                                 selected_bezier=0;
1393                                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_LEFT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1394                                 {
1395                                         // Check for a guide click
1396                                         GuideList::iterator iter;
1397
1398                                         iter=find_guide_x(mouse_pos,radius);
1399                                         if(iter==get_guide_list_x().end())
1400                                         {
1401                                                 curr_guide_is_x=false;
1402                                                 iter=find_guide_y(mouse_pos,radius);
1403                                         }
1404                                         else
1405                                                 curr_guide_is_x=true;
1406                                         if(iter!=get_guide_list_x().end() && iter!=get_guide_list_y().end())
1407                                         {
1408                                                 dragging=DRAG_GUIDE;
1409                                                 curr_guide=iter;
1410                                                 return true;
1411                                         }
1412
1413
1414                                         // All else fails, try making a selection box
1415                                         dragging=DRAG_BOX;
1416                                         curr_point=drag_point=mouse_pos;
1417                                         return true;
1418                                 }
1419                         }
1420                         break;
1421                 }
1422                 case 2: // Attempt to drag and move the window
1423                 {
1424                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1425                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1426                         if(duck)
1427                                 duck->signal_user_click(1)();
1428                         else
1429                         if(bezier)
1430                                 bezier->signal_user_click(1)(bezier_click_pos);
1431
1432                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_MIDDLE,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1433                         if(is_mouse)
1434                         {
1435                                 dragging=DRAG_WINDOW;
1436                                 drag_point=mouse_pos;
1437                                 signal_user_click(1)(mouse_pos);
1438                         }
1439                         break;
1440                 }
1441                 case 3: // Attempt to either get info on a duck, or open the menu
1442                 {
1443                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1444                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1445
1446                         Layer::Handle layer(get_canvas()->find_layer(mouse_pos));
1447                         if(duck)
1448                         {
1449                                 if(get_selected_ducks().size()<=1)
1450                                         duck->signal_user_click(2)();
1451                                 else
1452                                         canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MULTIPLE_DUCKS_CLICKED,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1453                                 return true;
1454                         }
1455                         else if(bezier)
1456                         {
1457                                 bezier->signal_user_click(2)(bezier_click_pos);
1458                                 return true;
1459                         }
1460                         else if (layer)
1461                         {
1462                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_RIGHT,mouse_pos))==Smach::RESULT_OK)
1463                                         return false;
1464                                 return true;
1465                         }
1466                         else
1467                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1468                         /*
1469                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1470                         {
1471                                 //popup_menu();
1472                                 return true;
1473                         }
1474                         */
1475                         break;
1476                 }
1477                 case 4:
1478                         signal_user_click(3)(mouse_pos);
1479                         break;
1480                 case 5:
1481                         signal_user_click(4)(mouse_pos);
1482                         break;
1483                 default:
1484                         break;
1485                 }
1486                 }
1487                 break;
1488         case GDK_MOTION_NOTIFY:
1489                 curr_point=mouse_pos;
1490
1491                 if(event->motion.time-last_event_time<25)
1492                         return true;
1493                 else
1494                         last_event_time=event->motion.time;
1495
1496                 signal_cursor_moved_();
1497
1498                 // Guide/Duck highlights on hover
1499                 if(dragging==DRAG_NONE)
1500                 {
1501                         GuideList::iterator iter;
1502
1503                         iter=find_guide_x(mouse_pos,radius);
1504                         if(iter==get_guide_list_x().end())
1505                                 iter=find_guide_y(mouse_pos,radius);
1506
1507                         if(iter!=curr_guide)
1508                         {
1509                                 curr_guide=iter;
1510                                 drawing_area->queue_draw();
1511                         }
1512
1513                         etl::handle<Duck> duck;
1514                         duck=find_duck(mouse_pos,radius);
1515                         if(duck!=hover_duck)
1516                         {
1517                                 hover_duck=duck;
1518                                 drawing_area->queue_draw();
1519                         }
1520                 }
1521
1522
1523                 if(dragging==DRAG_DUCK)
1524                 {
1525                         if(canvas_view->get_cancel_status())
1526                         {
1527                                 dragging=DRAG_NONE;
1528                                 canvas_view->queue_rebuild_ducks();
1529                                 return true;
1530                         }
1531                         /*
1532                         Point point((mouse_pos-selected_duck->get_origin())/selected_duck->get_scalar());
1533                         if(get_grid_snap())
1534                         {
1535                                 point[0]=floor(point[0]/grid_size[0]+0.5)*grid_size[0];
1536                                 point[1]=floor(point[1]/grid_size[1]+0.5)*grid_size[1];
1537                         }
1538                         selected_duck->set_point(point);
1539                         */
1540
1541                         //Point p(mouse_pos);
1542
1543                         set_axis_lock(event->motion.state&GDK_SHIFT_MASK);
1544
1545                         translate_selected_ducks(mouse_pos);
1546
1547                         drawing_area->queue_draw();
1548                 }
1549
1550                 if(dragging==DRAG_BOX)
1551                 {
1552                         curr_point=mouse_pos;
1553                         drawing_area->queue_draw();
1554                 }
1555
1556                 if(dragging==DRAG_GUIDE)
1557                 {
1558                         if(curr_guide_is_x)
1559                                 *curr_guide=mouse_pos[0];
1560                         else
1561                                 *curr_guide=mouse_pos[1];
1562                         drawing_area->queue_draw();
1563                 }
1564
1565                 if(dragging!=DRAG_WINDOW)
1566                 {       // Update those triangle things on the rulers
1567                         const synfig::Point point(mouse_pos);
1568                         hruler->property_position()=Distance(point[0],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1569                         vruler->property_position()=Distance(point[1],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1570                 }
1571
1572                 if(dragging == DRAG_WINDOW)
1573                         set_focus_point(get_focus_point() + mouse_pos-drag_point);
1574                 else if (event->motion.state & GDK_BUTTON1_MASK &&
1575                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_LEFT,
1576                                                                                                                                   mouse_pos,pressure,modifier)) == Smach::RESULT_ACCEPT)
1577                         return true;
1578                 else if (event->motion.state & GDK_BUTTON2_MASK &&
1579                                  canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_MIDDLE,
1580                                                                                                                                    mouse_pos, pressure, modifier)) == Smach::RESULT_ACCEPT)
1581                         return true;
1582                 else if (event->motion.state & GDK_BUTTON3_MASK &&
1583                                  canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_RIGHT,
1584                                                                                                                                    mouse_pos, pressure, modifier)) == Smach::RESULT_ACCEPT)
1585                         return true;
1586                 else if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_MOTION, BUTTON_NONE,
1587                                                                                                                                   mouse_pos, pressure,modifier)) == Smach::RESULT_ACCEPT)
1588                         return true;
1589
1590                 break;
1591
1592         case GDK_BUTTON_RELEASE:
1593         {
1594                 bool ret(false);
1595
1596                 if(dragging==DRAG_GUIDE)
1597                 {
1598                         dragging=DRAG_NONE;
1599                         save_meta_data();
1600                         return true;
1601                 }
1602                 else
1603                 if(dragging==DRAG_DUCK)
1604                 {
1605                         synfigapp::Action::PassiveGrouper grouper(instance.get(),"Move");
1606                         dragging=DRAG_NONE;
1607                         //translate_selected_ducks(mouse_pos);
1608                         set_axis_lock(false);
1609
1610                         try{
1611                         get_canvas_view()->duck_refresh_flag=false;
1612                         get_canvas_view()->duck_refresh_needed=false;
1613                         const bool drag_did_anything(end_duck_drag());
1614                         get_canvas_view()->duck_refresh_flag=true;
1615                         if(!drag_did_anything)
1616                         {
1617                                 // if we originally clicked on a selected duck ...
1618                                 if(clicked_duck)
1619                                 {
1620                                         // ... and CTRL is pressed, then just toggle the clicked duck
1621                                         //     otherwise make the clicked duck the only selected duck
1622                                         if(modifier&GDK_CONTROL_MASK)
1623                                                 unselect_duck(clicked_duck);
1624                                         else
1625                                         {
1626                                                 clear_selected_ducks();
1627                                                 select_duck(clicked_duck);
1628                                         }
1629                                         clicked_duck->signal_user_click(0)();
1630                                 }
1631                         }
1632                         else
1633                         {
1634                                 if(canvas_view->duck_refresh_needed)
1635                                         canvas_view->queue_rebuild_ducks();
1636                                 return true;
1637                         }
1638                         }catch(String)
1639                         {
1640                                 canvas_view->duck_refresh_flag=true;
1641                                 canvas_view->queue_rebuild_ducks();
1642                                 return true;
1643                         }
1644                         //queue_draw();
1645                         clicked_duck=0;
1646
1647                         ret=true;
1648                 }
1649
1650                 if(dragging==DRAG_BOX)
1651                 {
1652                         dragging=DRAG_NONE;
1653                         if((drag_point-mouse_pos).mag()>radius/2.0f)
1654                         {
1655                                 if(canvas_view->get_smach().process_event(EventBox(drag_point,mouse_pos,MouseButton(event->button.button),modifier))==Smach::RESULT_ACCEPT)
1656                                         return true;
1657
1658                                 // when dragging a box around some ducks:
1659                                 // SHIFT selects; CTRL toggles; SHIFT+CTRL unselects; <none> clears all then selects
1660                                 if(modifier&GDK_SHIFT_MASK)
1661                                         select_ducks_in_box(drag_point,mouse_pos);
1662
1663                                 if(modifier&GDK_CONTROL_MASK)
1664                                         toggle_select_ducks_in_box(drag_point,mouse_pos);
1665                                 else if(!(modifier&GDK_SHIFT_MASK))
1666                                 {
1667                                         clear_selected_ducks();
1668                                         select_ducks_in_box(drag_point,mouse_pos);
1669                                 }
1670                                 ret=true;
1671                         }
1672                         else
1673                         {
1674                                 if(allow_layer_clicks)
1675                                 {
1676                                         Layer::Handle layer(get_canvas()->find_layer(drag_point));
1677                                         //if(layer)
1678                                         {
1679                                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_LEFT,mouse_pos,modifier))==Smach::RESULT_OK)
1680                                                         signal_layer_selected_(layer);
1681                                                 ret=true;
1682                                         }
1683                                 }
1684                                 else
1685                                 {
1686                                         signal_user_click(0)(mouse_pos);
1687                                 }
1688                         }
1689                 }
1690
1691                 dragging=DRAG_NONE;
1692
1693                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_UP,MouseButton(event->button.button),mouse_pos,pressure,modifier))==Smach::RESULT_ACCEPT)
1694                         ret=true;
1695
1696                 return ret;
1697         }
1698                 break;
1699         case GDK_SCROLL:
1700         {
1701                 // Handle a mouse scrolling event like Xara Xtreme and
1702                 // Inkscape:
1703
1704                 // Scroll up/down: scroll up/down
1705                 // Shift + scroll up/down: scroll left/right
1706                 // Control + scroll up/down: zoom in/out
1707
1708                 if(modifier&GDK_CONTROL_MASK)
1709                 {
1710
1711                         // The zoom is performed while preserving the pointer
1712                         // position as a fixed point (similarly to Xara Xtreme and
1713                         // Inkscape).
1714
1715                         // The strategy used below is to scroll to the updated
1716                         // position, then zoom. This is easy to implement within
1717                         // the present architecture, but has the disadvantage of
1718                         // triggering multiple visible refreshes. Note: 1.25 is
1719                         // the hard wired ratio in zoom_in()/zoom_out(). The
1720                         // variable "drift" compensates additional inaccuracies in
1721                         // the zoom. There is also an additional minus sign for
1722                         // the inverted y coordinates.
1723
1724                         // FIXME: One might want to figure out where in the code
1725                         // this empirical drift is been introduced.
1726
1727                         const synfig::Point scroll_point(get_scrollx_adjustment()->get_value(),get_scrolly_adjustment()->get_value());
1728                         const double drift = 0.052;
1729
1730                         switch(event->scroll.direction)
1731                         {
1732                                 case GDK_SCROLL_UP:
1733                                 case GDK_SCROLL_RIGHT:
1734                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1.25-(1+drift)));
1735                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1.25-(1+drift)));
1736                                         zoom_in();
1737                                         break;
1738                                 case GDK_SCROLL_DOWN:
1739                                 case GDK_SCROLL_LEFT:
1740                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1/1.25-(1+drift)));
1741                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1/1.25-(1+drift)));
1742                                         zoom_out();
1743                                         break;
1744                                 default:
1745                                         break;
1746                         }
1747                 }
1748                 else if(modifier&GDK_SHIFT_MASK)
1749                 {
1750                         // Scroll in either direction by 20 pixels. Ideally, the
1751                         // amount of pixels per scrolling event should be
1752                         // configurable. Xara Xtreme currently uses an (hard
1753                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1754
1755                         const int scroll_pixel = 20;
1756
1757                         switch(event->scroll.direction)
1758                         {
1759                                 case GDK_SCROLL_UP:
1760                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1761                                         break;
1762                                 case GDK_SCROLL_DOWN:
1763                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1764                                         break;
1765                                 case GDK_SCROLL_LEFT:
1766                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1767                                         break;
1768                                 case GDK_SCROLL_RIGHT:
1769                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1770                                         break;
1771                                 default:
1772                                         break;
1773                         }
1774                 }
1775                 else
1776                 {
1777                         // Scroll in either direction by 20 pixels. Ideally, the
1778                         // amount of pixels per scrolling event should be
1779                         // configurable. Xara Xtreme currently uses an (hard
1780                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1781
1782                         const int scroll_pixel = 20;
1783
1784                         switch(event->scroll.direction)
1785                         {
1786                                 case GDK_SCROLL_UP:
1787                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1788                                         break;
1789                                 case GDK_SCROLL_DOWN:
1790                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1791                                         break;
1792                                 case GDK_SCROLL_LEFT:
1793                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1794                                         break;
1795                                 case GDK_SCROLL_RIGHT:
1796                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1797                                         break;
1798                                 default:
1799                                         break;
1800                         }
1801                 }
1802         }
1803                 break;
1804         default:
1805                 break;
1806         }
1807                 return false;
1808 }
1809
1810 bool
1811 WorkArea::on_hruler_event(GdkEvent */*event*/)
1812 {
1813 /*
1814         switch(event->type)
1815     {
1816         case GDK_BUTTON_PRESS:
1817                 if(dragging==DRAG_NONE)
1818                 {
1819                         dragging=DRAG_GUIDE;
1820                         curr_guide=get_guide_list_y().insert(get_guide_list_y().begin());
1821                         curr_guide_is_x=false;
1822                 }
1823                 return true;
1824                 break;
1825
1826         case GDK_MOTION_NOTIFY:
1827                 // Guide movement
1828                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1829                 {
1830                         double y,x;
1831                         if(event->button.axes)
1832                         {
1833                                 x=(event->button.axes[0]);
1834                                 y=(event->button.axes[1]);
1835                         }
1836                         else
1837                         {
1838                                 x=event->button.x;
1839                                 y=event->button.y;
1840                         }
1841
1842                         if(isnan(y) || isnan(x))
1843                                 return false;
1844
1845                         *curr_guide=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)))[1];
1846
1847                         queue_draw();
1848                 }
1849                 return true;
1850                 break;
1851
1852         case GDK_BUTTON_RELEASE:
1853                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1854                 {
1855                         dragging=DRAG_NONE;
1856                         get_guide_list_y().erase(curr_guide);
1857                 }
1858                 break;
1859                 return true;
1860         default:
1861                 break;
1862         }
1863 */
1864         return false;
1865 }
1866
1867 bool
1868 WorkArea::on_vruler_event(GdkEvent */*event*/)
1869 {
1870 /*
1871         switch(event->type)
1872     {
1873         case GDK_BUTTON_PRESS:
1874                 if(dragging==DRAG_NONE)
1875                 {
1876                         dragging=DRAG_GUIDE;
1877                         curr_guide=get_guide_list_x().insert(get_guide_list_x().begin());
1878                         curr_guide_is_x=true;
1879                 }
1880                 return true;
1881                 break;
1882         case GDK_BUTTON_RELEASE:
1883                 if(dragging==DRAG_GUIDE && curr_guide_is_x==true)
1884                 {
1885                         dragging=DRAG_NONE;
1886                         get_guide_list_x().erase(curr_guide);
1887                 }
1888                 break;
1889                 return true;
1890         default:
1891                 break;
1892         }
1893 */
1894         return false;
1895 }
1896
1897
1898 void
1899 WorkArea::refresh_dimension_info()
1900 {
1901         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1902
1903         canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1904         canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1905
1906         pw=canvaswidth/w;
1907         ph=canvasheight/h;
1908
1909         scrollx_adjustment.set_page_increment(abs(get_grid_size()[0]));
1910         scrollx_adjustment.set_step_increment(abs(pw));
1911         scrollx_adjustment.set_lower(-abs(canvaswidth));
1912         scrollx_adjustment.set_upper(abs(canvaswidth));
1913         scrolly_adjustment.set_lower(-abs(canvasheight));
1914         scrolly_adjustment.set_upper(abs(canvasheight));
1915         scrolly_adjustment.set_step_increment(abs(ph));
1916         scrolly_adjustment.set_page_increment(abs(get_grid_size()[1]));
1917
1918
1919
1920         if(drawing_area->get_width()<=0 || drawing_area->get_height()<=0 || w==0 || h==0)
1921                 return;
1922
1923         const synfig::Point focus_point(get_focus_point());
1924         const synfig::Real x(focus_point[0]/pw+drawing_area->get_width()/2-w/2);
1925         const synfig::Real y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
1926
1927         window_tl[0]=rend_desc.get_tl()[0]-pw*x;
1928         window_br[0]=rend_desc.get_br()[0]+pw*(drawing_area->get_width()-x-w);
1929
1930         window_tl[1]=rend_desc.get_tl()[1]-ph*y;
1931         window_br[1]=rend_desc.get_br()[1]+ph*(drawing_area->get_height()-y-h);
1932
1933         hruler->property_lower()=Distance(window_tl[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1934         hruler->property_upper()=Distance(window_br[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1935         vruler->property_lower()=Distance(window_tl[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1936         vruler->property_upper()=Distance(window_br[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1937
1938         view_window_changed();
1939 }
1940
1941
1942 synfig::Point
1943 WorkArea::screen_to_comp_coords(synfig::Point pos)const
1944 {
1945         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1946         //synfig::Vector::value_type canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1947         //synfig::Vector::value_type canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1948         //synfig::Vector::value_type pw=canvaswidth/w;
1949         //synfig::Vector::value_type ph=canvasheight/h;
1950         Vector focus_point=get_focus_point();
1951         synfig::Vector::value_type x=focus_point[0]/pw+drawing_area->get_width()/2-w/2;
1952         synfig::Vector::value_type y=focus_point[1]/ph+drawing_area->get_height()/2-h/2;
1953
1954         return rend_desc.get_tl()-synfig::Point(pw*x,ph*y)+synfig::Point(pw*pos[0],ph*pos[1]);
1955 }
1956
1957 synfig::Point
1958 WorkArea::comp_to_screen_coords(synfig::Point /*pos*/)const
1959 {
1960         synfig::warning("WorkArea::comp_to_screen_coords: Not yet implemented");
1961         return synfig::Point();
1962 }
1963
1964 int
1965 WorkArea::next_unrendered_tile(int refreshes)const
1966 {
1967         //assert(!tile_book.empty());
1968         if(tile_book.empty())
1969                 return -1;
1970
1971         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1972
1973         const synfig::Vector focus_point(get_focus_point());
1974
1975         // Calculate the window coordinates of the top-left
1976         // corner of the canvas.
1977         const synfig::Vector::value_type
1978                 x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
1979                 y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
1980
1981         const int width_in_tiles(w/tile_w+((low_resolution?((w/2)%(tile_w/2)):(w%tile_w))?1:0));
1982         const int height_in_tiles(h/tile_h+(h%tile_h?1:0));
1983
1984         int
1985                 u(0),v(0),
1986                 u1(int(-x/tile_w)),
1987                 v1(int(-y/tile_h)),
1988                 u2(int((-x+drawing_area->get_width())/tile_w+1)),
1989                 v2(int((-y+drawing_area->get_height())/tile_h+1));
1990
1991         if(u2>width_in_tiles)u2=width_in_tiles;
1992         if(v2>height_in_tiles)v2=height_in_tiles;
1993         if(u1<0)u1=0;
1994         if(v1<0)v1=0;
1995
1996         int last_good_tile(-1);
1997
1998         for(v=v1;v<v2;v++)
1999                 for(u=u1;u<u2;u++)
2000                 {
2001                         int index(v*width_in_tiles+u);
2002                         if(tile_book[index].second<refreshes)
2003                         {
2004                                 last_good_tile=index;
2005                                 if(rand()%8==0)
2006                                         return index;
2007                         }
2008                 }
2009         return last_good_tile;
2010 }
2011
2012 /*
2013 template <typename F, typename T=WorkAreaRenderer, typename R=typename F::result_type>
2014 class handle2ptr_t : public std::unary_function<typename etl::handle<T>,R>
2015 {
2016 private:
2017         F func;
2018 public:
2019         handle2ptr_t(const F &func):func(func) { };
2020
2021         R operator()(typename etl::handle<T> x) { return func(*x); }
2022 };
2023
2024 template <typename F>
2025 handle2ptr_t<F>
2026 handle2ptr(F func)
2027 {
2028         return handle2ptr_t<F>(func);
2029 }
2030         for_each(
2031                 renderer_set_.begin(),
2032                 renderer_set_.end(),
2033                 handle2ptr(
2034                         sigc::bind(
2035                                 sigc::bind(
2036                                         sigc::mem_fun(
2037                                                 &WorkAreaRenderer::render_vfunc
2038                                         ),
2039                                         Gdk::Rectangle(event->area)
2040                                 ),
2041                                 drawing_area->get_window()
2042                         )
2043                 )
2044         );
2045 */
2046
2047 bool
2048 WorkArea::refresh(GdkEventExpose*event)
2049 {
2050         assert(get_canvas());
2051
2052         drawing_area->get_window()->clear();
2053
2054         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2055
2056         const synfig::Vector focus_point(get_focus_point());
2057
2058         // Update the old focus point
2059         last_focus_point=focus_point;
2060
2061         // Draw out the renderables
2062         {
2063                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
2064                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
2065                 {
2066                         if((*iter)->get_enabled())
2067                                 (*iter)->render_vfunc(
2068                                         drawing_area->get_window(),
2069                                         Gdk::Rectangle(&event->area)
2070                                 );
2071                 }
2072         }
2073
2074         // Calculate the window coordinates of the top-left
2075         // corner of the canvas.
2076         //const synfig::Vector::value_type
2077         //      x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2078         //      y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2079
2080         //const synfig::Vector::value_type window_startx(window_tl[0]);
2081         //const synfig::Vector::value_type window_endx(window_br[0]);
2082         //const synfig::Vector::value_type window_starty(window_tl[1]);
2083         //const synfig::Vector::value_type window_endy(window_br[1]);
2084
2085         Glib::RefPtr<Gdk::GC> gc=Gdk::GC::create(drawing_area->get_window());
2086
2087         // If we are in animate mode, draw a red border around the screen
2088         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2089         {
2090 // #define USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2091 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2092                 // This method of drawing the red border doesn't work on any
2093                 // Gtk theme which uses the crux-engine, hcengine, industrial,
2094                 // mist, or ubuntulooks engine, such as the default ubuntu
2095                 // 'Human' theme.
2096                 drawing_frame->modify_bg(Gtk::STATE_NORMAL,Gdk::Color("#FF0000"));
2097 #else
2098                 // So let's do it in a more primitive fashion.
2099                 gc->set_rgb_fg_color(Gdk::Color("#FF0000"));
2100                 gc->set_line_attributes(1,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
2101                 drawing_area->get_window()->draw_rectangle(
2102                         gc,
2103                         false,  // Fill?
2104                         0,0,    // x,y
2105                         drawing_area->get_width()-1,drawing_area->get_height()-1); // w,h
2106 #endif
2107         }
2108 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2109         else
2110                 drawing_frame->unset_bg(Gtk::STATE_NORMAL);
2111 #endif
2112
2113         previous_focus=get_focus_point();
2114
2115         return true;
2116 }
2117
2118 void
2119 WorkArea::done_rendering()
2120 {
2121 /*
2122         assert(buffer);
2123         assert(w>0);
2124         assert(h>0);
2125         pix_buf=Gdk::Pixbuf::create_from_data(
2126                 buffer, // pointer to the data
2127                 Gdk::COLORSPACE_RGB, // the colorspace
2128                 true, // has alpha?
2129                 8, // bits per sample
2130                 w,      // width
2131                 h,      // height
2132                 w*bpp); // stride (pitch)
2133         assert(pix_buf);
2134 */
2135 }
2136
2137
2138 void
2139 WorkArea::set_quality(int x)
2140 {
2141         if(x==quality)
2142                 return;
2143         quality=x;
2144         queue_render_preview();
2145 }
2146
2147
2148 namespace studio
2149 {
2150 class WorkAreaProgress : public synfig::ProgressCallback
2151 {
2152         WorkArea *work_area;
2153         ProgressCallback *cb;
2154
2155 public:
2156
2157         WorkAreaProgress(WorkArea *work_area,ProgressCallback *cb):
2158                 work_area(work_area),cb(cb)
2159         {
2160                 assert(cb);
2161         }
2162
2163         virtual bool
2164         task(const std::string &str)
2165         {
2166                 if(work_area->dirty)
2167                         return false;
2168                 return cb->task(str);
2169         }
2170
2171         virtual bool
2172         error(const std::string &err)
2173         {
2174                 if(work_area->dirty)
2175                         return false;
2176                 return cb->error(err);
2177         }
2178
2179         virtual bool
2180         amount_complete(int current, int total)
2181         {
2182                 if(work_area->dirty)
2183                         return false;
2184                 return cb->amount_complete(current,total);
2185         }
2186 };
2187 }
2188
2189 bool
2190 studio::WorkArea::async_update_preview()
2191 {
2192         if (get_updating())
2193         {
2194                 stop_updating();
2195                 queue_render_preview();
2196                 return false;
2197         }
2198
2199         async_renderer=0;
2200
2201         queued=false;
2202         canceled_=false;
2203         get_canvas_view()->reset_cancel_status();
2204
2205         // This object will mark us as busy until
2206         // we are done.
2207         //studio::App::Busy busy;
2208
2209         //WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2210         //synfig::ProgressCallback *cb=&callback;
2211
2212         if(!is_visible())return false;
2213
2214         /*
2215         // If we are queued to render the scene at the next idle
2216         // go ahead and de-queue it.
2217         if(render_idle_func_id)
2218         {
2219                 g_source_remove(render_idle_func_id);
2220                 //queued=false;
2221                 render_idle_func_id=0;
2222         }
2223         */
2224
2225         dirty=false;
2226         get_canvas_view()->reset_cancel_status();
2227
2228         //bool ret=false;
2229         RendDesc desc=get_canvas()->rend_desc();
2230
2231         int w=(int)(desc.get_w()*zoom);
2232         int h=(int)(desc.get_h()*zoom);
2233
2234         // Setup the description parameters
2235         desc.set_antialias(1);
2236         desc.set_time(cur_time);
2237
2238         set_rend_desc(desc);
2239
2240         // Create the render target
2241         handle<Target> target;
2242
2243         // if we have lots of pixels to render and the tile renderer isn't disabled, use it
2244         if(w*h>(low_resolution?480*270:480*270/2) &&
2245            !getenv("SYNFIG_DISABLE_TILE_RENDER"))
2246         {
2247                 // do a tile render
2248                 handle<WorkAreaTarget> trgt(new class WorkAreaTarget(this,w,h));
2249
2250                 trgt->set_rend_desc(&desc);
2251                 trgt->set_onion_skin(get_onion_skin());
2252                 target=trgt;
2253         }
2254         else
2255         {
2256                 // do a scanline render
2257                 handle<WorkAreaTarget_Full> trgt(new class WorkAreaTarget_Full(this,w,h));
2258
2259                 trgt->set_rend_desc(&desc);
2260                 trgt->set_onion_skin(get_onion_skin());
2261                 target=trgt;
2262         }
2263
2264         // We can rest assured that our time has already
2265         // been set, so there is no need to have to
2266         // recalculate that over again.
2267         // UPDATE: This is kind of needless with
2268         // the way that time is handled now in SYNFIG.
2269         //target->set_avoid_time_sync(true);
2270         async_renderer=new AsyncRenderer(target);
2271         async_renderer->signal_finished().connect(
2272                 sigc::mem_fun(this,&WorkArea::async_update_finished)
2273         );
2274
2275         rendering=true;
2276         async_renderer->start();
2277
2278         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2279
2280         rendering=true;
2281         cb->task(_("Rendering..."));
2282         rendering=true;
2283
2284         return true;
2285 }
2286
2287 void
2288 studio::WorkArea::async_update_finished()
2289 {
2290         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2291
2292         rendering=false;
2293
2294         if(!async_renderer)
2295                 return;
2296
2297         // If we completed successfully, then
2298         // we aren't dirty anymore
2299         if(async_renderer->has_success())
2300         {
2301                 dirty=false;
2302                 //queued=false;
2303                 cb->task(_("Idle"));
2304         }
2305         else
2306         {
2307                 dirty=true;
2308                 cb->task(_("Render Failed"));
2309         }
2310         //get_canvas_view()->reset_cancel_status();
2311         done_rendering();
2312 }
2313
2314 bool
2315 studio::WorkArea::sync_update_preview()
2316 {
2317         //      const Time &time(cur_time);
2318
2319         canceled_=false;
2320         get_canvas_view()->reset_cancel_status();
2321
2322         async_renderer=0;
2323
2324 again:
2325         // This object will mark us as busy until
2326         // we are done.
2327         studio::App::Busy busy;
2328
2329         WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2330         synfig::ProgressCallback *cb=&callback;
2331
2332         // We don't want to render if we are already rendering
2333         if(rendering)
2334         {
2335                 dirty=true;
2336                 return false;
2337         }
2338
2339         if(!is_visible())return false;
2340         get_canvas()->set_time(get_time());
2341         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2342         signal_rendering()();
2343
2344         // If we are queued to render the scene at the next idle
2345         // go ahead and de-queue it.
2346         if(render_idle_func_id)
2347         {
2348                 g_source_remove(render_idle_func_id);
2349                 //queued=false;
2350                 render_idle_func_id=0;
2351         }
2352         // Start rendering
2353         rendering=true;
2354
2355         dirty=false;
2356         get_canvas_view()->reset_cancel_status();
2357
2358         RendDesc desc=get_canvas()->rend_desc();
2359         //newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
2360
2361         int w=(int)(desc.get_w()*zoom);
2362         int h=(int)(desc.get_h()*zoom);
2363
2364         // Setup the description parameters
2365         desc.set_antialias(1);
2366         desc.set_time(cur_time);
2367         //desc.set_wh(w,h);
2368
2369         set_rend_desc(desc);
2370
2371         // Create the render target
2372         handle<WorkAreaTarget> target(new class WorkAreaTarget(this,w,h));
2373
2374         target->set_rend_desc(&desc);
2375
2376         // We can rest assured that our time has already
2377         // been set, so there is no need to have to
2378         // recalculate that over again.
2379         target->set_avoid_time_sync(true);
2380
2381         if(cb)
2382                 cb->task(strprintf(_("Rendering canvas %s..."),get_canvas()->get_name().c_str()));
2383
2384         bool ret = target->render(cb);
2385
2386         if(!ret && !get_canvas_view()->get_cancel_status() && dirty)
2387         {
2388                 rendering=false;
2389                 //canceled_=true;
2390                 goto again;
2391         }
2392         if(get_canvas_view()->get_cancel_status())
2393                 canceled_=true;
2394
2395         if(cb)
2396         {
2397                 if(ret)
2398                         cb->task(_("Idle"));
2399                 else
2400                         cb->task(_("Render Failed"));
2401                 cb->amount_complete(0,1);
2402         }
2403
2404         // Refresh the work area to make sure that
2405         // it is being displayed correctly
2406         drawing_area->queue_draw();
2407
2408         // If we completed successfully, then
2409         // we aren't dirty anymore
2410         if(ret)
2411         {
2412                 dirty=false;
2413                 //queued=false;
2414         }
2415         else dirty=true;
2416         rendering=false;
2417         //get_canvas_view()->reset_cancel_status();
2418         done_rendering();
2419         return ret;
2420 }
2421
2422 void
2423 studio::WorkArea::async_render_preview(synfig::Time time)
2424 {
2425         cur_time=time;
2426         //tile_book.clear();
2427
2428         refreshes+=5;
2429         if(!is_visible())return;
2430
2431         get_canvas()->set_time(get_time());
2432         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2433         signal_rendering()();
2434
2435         async_update_preview();
2436 }
2437 void
2438 WorkArea::async_render_preview()
2439 {
2440         return async_render_preview(get_canvas_view()->get_time());
2441 }
2442
2443 bool
2444 studio::WorkArea::sync_render_preview(synfig::Time time)
2445 {
2446         cur_time=time;
2447         //tile_book.clear();
2448         refreshes+=5;
2449         if(!is_visible())return false;
2450         return sync_update_preview();
2451 }
2452
2453 bool
2454 WorkArea::sync_render_preview()
2455 {
2456         return sync_render_preview(get_canvas_view()->get_time());
2457 }
2458
2459 void
2460 WorkArea::sync_render_preview_hook()
2461 {
2462         sync_render_preview(get_canvas_view()->get_time());
2463 }
2464
2465 void
2466 WorkArea::queue_scroll()
2467 {
2468 //      const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2469
2470         const synfig::Point focus_point(get_focus_point());
2471
2472         const synfig::Real
2473                 new_x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2474                 new_y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2475
2476         const synfig::Real
2477                 old_x(last_focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2478                 old_y(last_focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2479
2480         // If the coordinates didn't change, we shouldn't queue a draw
2481         if(old_x==new_x && old_y==new_y)
2482                 return;
2483
2484         const int
2485                 dx(round_to_int(old_x)-round_to_int(new_x)),
2486                 dy(round_to_int(old_y)-round_to_int(new_y));
2487
2488         drawing_area->get_window()->scroll(-dx,-dy);
2489
2490         if (timecode_width && timecode_height)
2491         {
2492                 drawing_area->queue_draw_area(4,       4,    4+timecode_width,    4+timecode_height);
2493                 drawing_area->queue_draw_area(4-dx, 4-dy, 4-dx+timecode_width, 4-dy+timecode_height);
2494         }
2495
2496 #ifndef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2497         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2498         {
2499                 int maxx = drawing_area->get_width()-1;
2500                 int maxy = drawing_area->get_height()-1;
2501
2502                 if (dx > 0)
2503                 {
2504                         drawing_area->queue_draw_area(      0, 0,       1, maxy);
2505                         drawing_area->queue_draw_area(maxx-dx, 0, maxx-dx, maxy);
2506                 }
2507                 else if (dx < 0)
2508                 {
2509                         drawing_area->queue_draw_area(   maxx, 0,    maxx, maxy);
2510                         drawing_area->queue_draw_area(    -dx, 0,     -dx, maxy);
2511                 }
2512                 if (dy > 0)
2513                 {
2514                         drawing_area->queue_draw_area(0,       0, maxx,       1);
2515                         drawing_area->queue_draw_area(0, maxy-dy, maxx, maxy-dy);
2516                 }
2517                 else if (dy < 0)
2518                 {
2519                         drawing_area->queue_draw_area(0,    maxy, maxx,    maxy);
2520                         drawing_area->queue_draw_area(0,     -dy, maxx,     -dy);
2521                 }
2522         }
2523 #endif // USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2524
2525         last_focus_point=focus_point;
2526 }
2527
2528 void
2529 studio::WorkArea::zoom_in()
2530 {
2531         set_zoom(zoom*1.25);
2532 }
2533
2534 void
2535 studio::WorkArea::zoom_out()
2536 {
2537         set_zoom(zoom/1.25);
2538 }
2539
2540 void
2541 studio::WorkArea::zoom_fit()
2542 {
2543         // This really doesn't zoom to fit. Bug.
2544         zoom_norm();
2545 }
2546
2547 void
2548 studio::WorkArea::zoom_norm()
2549 {
2550         if(zoom==1.0)
2551                 set_zoom(prev_zoom);
2552         else
2553         {
2554                 prev_zoom=zoom;
2555                 set_zoom(1.0f);
2556         }
2557 }
2558
2559 gboolean
2560 studio::WorkArea::__render_preview(gpointer data)
2561 {
2562         WorkArea *work_area(static_cast<WorkArea*>(data));
2563
2564         // there's no point anyone trying to cancel the timer now - it's gone off already
2565         work_area->render_idle_func_id = 0;
2566
2567         work_area->queued=false;
2568         work_area->async_render_preview(work_area->get_canvas_view()->get_time());
2569
2570         return 0;
2571 }
2572
2573 void
2574 studio::WorkArea::queue_render_preview()
2575 {
2576         //synfig::info("queue_render_preview(): called for %s", get_canvas_view()->get_time().get_string().c_str());
2577
2578         if(queued==true)
2579         {
2580                 return;
2581                 //synfig::info("queue_render_preview(): already queued, unqueuing");
2582 /*              if(render_idle_func_id)
2583                         g_source_remove(render_idle_func_id);
2584                 render_idle_func_id=0;
2585                 queued=false;
2586 */
2587                 //async_renderer=0;
2588         }
2589
2590         if(dirty_trap_enabled)
2591         {
2592                 dirty_trap_queued++;
2593                 return;
2594         }
2595
2596         int queue_time=50;
2597
2598         if(rendering)
2599                 queue_time+=250;
2600
2601
2602         if(queued==false)
2603         {
2604                 //synfig::info("queue_render_preview(): (re)queuing...");
2605                 //render_idle_func_id=g_idle_add_full(G_PRIORITY_DEFAULT,__render_preview,this,NULL);
2606                 render_idle_func_id=g_timeout_add_full(
2607                         G_PRIORITY_DEFAULT,     // priority -
2608                         queue_time,                     // interval - the time between calls to the function, in milliseconds (1/1000ths of a second)
2609                         __render_preview,       // function - function to call
2610                         this,                           // data     - data to pass to function
2611                         NULL);                          // notify   - function to call when the idle is removed, or NULL
2612                 queued=true;
2613         }
2614 /*      else if(rendering)
2615         {
2616                 refreshes+=5;
2617                 dirty=true;
2618                 queue_draw();
2619         }
2620 */
2621 }
2622
2623 DirtyTrap::DirtyTrap(WorkArea *work_area):work_area(work_area)
2624 {
2625         work_area->dirty_trap_enabled=true;
2626
2627         work_area->dirty_trap_queued=0;
2628 }
2629
2630 DirtyTrap::~DirtyTrap()
2631 {
2632         work_area->dirty_trap_enabled=false;
2633         if(work_area->dirty_trap_queued)
2634                 work_area->queue_render_preview();
2635 }
2636
2637 void
2638 studio::WorkArea::queue_draw_preview()
2639 {
2640         drawing_area->queue_draw();
2641 }
2642
2643 void
2644 studio::WorkArea::set_cursor(const Gdk::Cursor& x)
2645 {
2646         drawing_area->get_window()->set_cursor(x);
2647 }
2648 void
2649 studio::WorkArea::set_cursor(Gdk::CursorType x)
2650 {
2651         drawing_area->get_window()->set_cursor(Gdk::Cursor(x));
2652 }
2653
2654 #include "iconcontroller.h"
2655
2656 void
2657 studio::WorkArea::refresh_cursor()
2658 {
2659 //      set_cursor(IconController::get_tool_cursor(canvas_view->get_smach().get_state_name(),drawing_area->get_window()));
2660 }
2661
2662 void
2663 studio::WorkArea::reset_cursor()
2664 {
2665         drawing_area->get_window()->set_cursor(Gdk::Cursor(Gdk::TOP_LEFT_ARROW));
2666 //      set_cursor(Gdk::TOP_LEFT_ARROW);
2667 }
2668
2669 void
2670 studio::WorkArea::set_zoom(float z)
2671 {
2672         z=max(1.0f/128.0f,min(128.0f,z));
2673         if(z==zoom)
2674                 return;
2675         zoom = z;
2676         refresh_dimension_info();
2677         /*if(async_renderer)
2678         {
2679                 async_renderer->stop();
2680                 async_renderer=0;
2681         }*/
2682         refreshes+=5;
2683         async_update_preview();
2684         //queue_render_preview();
2685 }
2686
2687 void
2688 WorkArea::set_selected_value_node(etl::loose_handle<synfig::ValueNode> x)
2689 {
2690         if(x!=selected_value_node_)
2691         {
2692                 selected_value_node_=x;
2693                 queue_draw();
2694         }
2695 }
2696
2697 void
2698 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x)
2699 {
2700         renderer_set_.insert(x);
2701         x->set_work_area(this);
2702         queue_draw();
2703 }
2704
2705 void
2706 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x, int priority)
2707 {
2708         x->set_priority(priority);
2709         insert_renderer(x);
2710 }
2711
2712 void
2713 WorkArea::erase_renderer(const etl::handle<WorkAreaRenderer> &x)
2714 {
2715         x->set_work_area(0);
2716         renderer_set_.erase(x);
2717         queue_draw();
2718 }
2719
2720 void
2721 WorkArea::resort_render_set()
2722 {
2723         std::set<etl::handle<WorkAreaRenderer> > tmp(
2724                 renderer_set_.begin(),
2725                 renderer_set_.end()
2726         );
2727         renderer_set_.swap(tmp);
2728         queue_draw();
2729 }