synfig-studio/src/gui/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 (c) 2006 Yue Shi Lai
  10 **      Copyright (c) 2007, 2008 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 "widgets/widget_color.h"
  60 #include <synfig/distance.h>
  61
  62 #include "workarearenderer/workarearenderer.h"
  63 #include "workarearenderer/renderer_canvas.h"
  64 #include "workarearenderer/renderer_grid.h"
  65 #include "workarearenderer/renderer_guides.h"
  66 #include "workarearenderer/renderer_timecode.h"
  67 #include "workarearenderer/renderer_ducks.h"
  68 #include "workarearenderer/renderer_dragbox.h"
  69 #include "workarearenderer/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 #ifndef stratof
  89 #define stratof(X) (atof((X).c_str()))
  90 #define stratoi(X) (atoi((X).c_str()))
  91 #endif
  92
  93
  94 /* === G L O B A L S ======================================================= */
  95
  96 /* === C L A S S E S ======================================================= */
  97
  98 class studio::WorkAreaTarget : public synfig::Target_Tile
  99 {
 100 public:
 101         WorkArea *workarea;
 102         bool low_res;
 103         int w,h;
 104         int real_tile_w,real_tile_h;
 105         //std::vector<Glib::RefPtr<Gdk::Pixbuf> >::iterator tile_iter;
 106
 107         int twindow_start, twindow_width, twindow_height, twindow_pad;
 108         int refresh_id;
 109
 110         bool onionskin;
 111         bool onion_first_tile;
 112         int onion_layers;
 113
 114         std::list<synfig::Time> onion_skin_queue;
 115
 116         synfig::Mutex mutex;
 117
 118         void set_onion_skin(bool x, int *onions)
 119         {
 120                 onionskin=x;
 121
 122                 Time time(rend_desc().get_time_start());
 123
 124                 if(!onionskin)
 125                         return;
 126                 onion_skin_queue.push_back(time);
 127
 128                 try
 129                 {
 130                 Time thistime=time;
 131                 for(int i=0; i<onions[0]; i++)
 132                         {
 133                                 Time keytime=get_canvas()->keyframe_list().find_prev(thistime)->get_time();
 134                                 onion_skin_queue.push_back(keytime);
 135                                 thistime=keytime;
 136                         }
 137                 }
 138                 catch(...)
 139                 {  }
 140
 141                 try
 142                 {
 143                 Time thistime=time;
 144                 for(int i=0; i<onions[1]; i++)
 145                         {
 146                                 Time keytime=get_canvas()->keyframe_list().find_next(thistime)->get_time();
 147                                 onion_skin_queue.push_back(keytime);
 148                                 thistime=keytime;
 149                         }
 150                 }
 151                 catch(...)
 152                 {  }
 153
 154                 onion_layers=onion_skin_queue.size();
 155
 156                 onion_first_tile=false;
 157         }
 158 public:
 159
 160         WorkAreaTarget(WorkArea *workarea,int w, int h):
 161                 workarea(workarea),
 162                 low_res(workarea->get_low_resolution_flag()),
 163                 w(w),
 164                 h(h),
 165                 real_tile_w(workarea->tile_w),
 166                 real_tile_h(workarea->tile_h),
 167                 refresh_id(workarea->refreshes),
 168                 onionskin(false),
 169                 onion_layers(0)
 170         {
 171                 //set_remove_alpha();
 172                 //set_avoid_time_sync();
 173                 set_clipping(true);
 174                 if(low_res)
 175                 {
 176                         int div = workarea->get_low_res_pixel_size();
 177                         set_tile_w(workarea->tile_w/div);
 178                         set_tile_h(workarea->tile_h/div);
 179                 }
 180                 else
 181                 {
 182                         set_tile_w(workarea->tile_w);
 183                         set_tile_h(workarea->tile_h);
 184                 }
 185                 set_canvas(workarea->get_canvas());
 186                 set_quality(workarea->get_quality());
 187         }
 188
 189         ~WorkAreaTarget()
 190         {
 191                 workarea->queue_draw();
 192         }
 193
 194         virtual bool set_rend_desc(synfig::RendDesc *newdesc)
 195         {
 196                 assert(workarea);
 197                 newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
 198                 if(low_res) {
 199                         int div = workarea->get_low_res_pixel_size();
 200                         newdesc->set_wh(w/div,h/div);
 201                 }
 202                 else
 203                         newdesc->set_wh(w,h);
 204
 205                 if(
 206                                 workarea->get_w()!=w
 207                         ||      workarea->get_h()!=h
 208                 ) workarea->set_wh(w,h,4);
 209
 210                 workarea->full_frame=false;
 211
 212                 desc=*newdesc;
 213                 return true;
 214         }
 215
 216         virtual int total_tiles()const
 217         {
 218                 int tw(rend_desc().get_w()/get_tile_w());
 219                 int th(rend_desc().get_h()/get_tile_h());
 220                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 221                 if(rend_desc().get_h()%get_tile_h()!=0)th++;
 222                 return tw*th;
 223         }
 224
 225         virtual int next_frame(Time& time)
 226         {
 227                 synfig::Mutex::Lock lock(mutex);
 228
 229                 if(!onionskin)
 230                         return synfig::Target_Tile::next_frame(time);
 231
 232                 onion_first_tile=(onion_layers==(signed)onion_skin_queue.size());
 233
 234                 if(!onion_skin_queue.empty())
 235                 {
 236                         time=onion_skin_queue.front();
 237                         onion_skin_queue.pop_front();
 238                 }
 239                 else
 240                         return 0;
 241
 242                 return onion_skin_queue.size()+1;
 243         }
 244
 245         virtual int next_tile(int& x, int& y)
 246         {
 247                 synfig::Mutex::Lock lock(mutex);
 248                 //if(workarea->tile_queue.empty()) return 0;
 249
 250                 //int curr_tile(workarea->tile_queue.front());
 251                 //workarea->tile_queue.pop_front();
 252                 int curr_tile(workarea->next_unrendered_tile(refresh_id-onion_skin_queue.size()));
 253                 if(curr_tile<0)
 254                         return 0;
 255
 256                 // Width of the image(in tiles)
 257                 int tw(rend_desc().get_w()/get_tile_w());
 258                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 259
 260                 y=(curr_tile/tw)*get_tile_w();
 261                 x=(curr_tile%tw)*get_tile_h();
 262
 263                 // Mark this tile as "up-to-date"
 264                 if(onionskin)
 265                         workarea->tile_book[curr_tile].second=refresh_id-onion_skin_queue.size();
 266                 else
 267                         workarea->tile_book[curr_tile].second=refresh_id;
 268
 269                 return total_tiles()-curr_tile+1;
 270         }
 271
 272
 273         virtual bool start_frame(synfig::ProgressCallback */*cb*/)
 274         {
 275                 synfig::Mutex::Lock lock(mutex);
 276
 277                 int tw(rend_desc().get_w()/get_tile_w());
 278                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 279                 int th(rend_desc().get_h()/get_tile_h());
 280                 if(rend_desc().get_h()%get_tile_h()!=0)th++;
 281
 282                 twindow_start=0;
 283                 twindow_width=tw;
 284                 twindow_height=th;
 285                 twindow_pad=0;
 286
 287                 workarea->tile_book.resize(total_tiles());
 288                 //tile_iter=workarea->tile_book.begin()+twindow_start;
 289                 return true;
 290         }
 291
 292         static void free_buff(const guint8 *x) { free(const_cast<guint8*>(x)); }
 293
 294         virtual bool add_tile(const synfig::Surface &surface, int x, int y)
 295         {
 296                 synfig::Mutex::Lock lock(mutex);
 297                 assert(surface);
 298
 299                 PixelFormat pf(PF_RGB);
 300
 301                 const int total_bytes(get_tile_w()*get_tile_h()*synfig::channels(pf));
 302
 303                 unsigned char *buffer((unsigned char*)malloc(total_bytes));
 304
 305                 if(!surface || !buffer)
 306                         return false;
 307                 {
 308                         unsigned char *dest(buffer);
 309                         const Color *src(surface[0]);
 310                         int w(get_tile_w());
 311                         int h(get_tile_h());
 312                         int x(surface.get_w()*surface.get_h());
 313                         //if(low_res) {
 314                         //      int div = workarea->get_low_res_pixel_size();
 315                         //      w/=div,h/=div;
 316                         //}
 317                         Color dark(0.6,0.6,0.6);
 318                         Color lite(0.8,0.8,0.8);
 319                         for(int i=0;i<x;i++)
 320                                 dest=Color2PixelFormat(
 321                                         Color::blend(
 322                                                 (*(src++)),
 323                                                 ((i/surface.get_w())*8/h+(i%surface.get_w())*8/w)&1?dark:lite,
 324                                                 1.0f
 325                                         ).clamped(),
 326                                         pf,dest,App::gamma
 327                                 );
 328                 }
 329
 330                 x/=get_tile_w();
 331                 y/=get_tile_h();
 332                 int tw(rend_desc().get_w()/get_tile_w());
 333                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 334                 unsigned int index=y*tw+x;
 335
 336                 // Sanity check
 337                 if(index>workarea->tile_book.size())
 338                         return false;
 339
 340                 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
 341
 342                 pixbuf=Gdk::Pixbuf::create_from_data(
 343                         buffer, // pointer to the data
 344                         Gdk::COLORSPACE_RGB, // the colorspace
 345                         ((pf&PF_A)==PF_A), // has alpha?
 346                         8, // bits per sample
 347                         surface.get_w(),        // width
 348                         surface.get_h(),        // height
 349                         surface.get_w()*synfig::channels(pf), // stride (pitch)
 350                         sigc::ptr_fun(&WorkAreaTarget::free_buff)
 351                 );
 352
 353                 if(low_res)
 354                 {
 355                         // We need to scale up
 356                         int div = workarea->get_low_res_pixel_size();
 357                         pixbuf=pixbuf->scale_simple(
 358                                 surface.get_w()*div,
 359                                 surface.get_h()*div,
 360                                 Gdk::INTERP_NEAREST
 361                         );
 362                 }
 363
 364                 if(!onionskin || onion_first_tile || !workarea->tile_book[index].first)
 365                 {
 366                         workarea->tile_book[index].first=pixbuf;
 367                 }
 368                 else
 369                 {
 370                         pixbuf->composite(
 371                                 workarea->tile_book[index].first, // Dest
 372                                 0,//int dest_x
 373                                 0,//int dest_y
 374                                 pixbuf->get_width(), // dest width
 375                                 pixbuf->get_height(), // dest_height,
 376                                 0, // double offset_x
 377                                 0, // double offset_y
 378                                 1, // double scale_x
 379                                 1, // double scale_y
 380                                 Gdk::INTERP_NEAREST, // interp
 381                                 255/(onion_layers-onion_skin_queue.size()+1) //int overall_alpha
 382                         );
 383                 }
 384
 385                 //if(index%2)
 386                         workarea->queue_draw();
 387                 assert(workarea->tile_book[index].first);
 388                 return true;
 389         }
 390
 391         virtual void end_frame()
 392         {
 393                 //workarea->queue_draw();
 394         }
 395 };
 396
 397
 398 class studio::WorkAreaTarget_Full : public synfig::Target_Scanline
 399 {
 400 public:
 401         WorkArea *workarea;
 402         bool low_res;
 403         int w,h;
 404         int real_tile_w,real_tile_h;
 405         //std::vector<Glib::RefPtr<Gdk::Pixbuf> >::iterator tile_iter;
 406
 407         int twindow_start, twindow_width, twindow_height, twindow_pad;
 408         int refresh_id;
 409
 410         bool onionskin;
 411         bool onion_first_tile;
 412         int onion_layers;
 413
 414         Surface surface;
 415
 416         std::list<synfig::Time> onion_skin_queue;
 417
 418         void set_onion_skin(bool x, int *onions)
 419         {
 420                 onionskin=x;
 421
 422                 Time time(rend_desc().get_time_start());
 423
 424                 if(!onionskin)
 425                         return;
 426                 onion_skin_queue.push_back(time);
 427                 //onion_skin_queue.push_back(time-1);
 428                 //onion_skin_queue.push_back(time+1);
 429                 try
 430                 {
 431                 Time thistime=time;
 432                 for(int i=0; i<onions[0]; i++)
 433                         {
 434                                 Time keytime=get_canvas()->keyframe_list().find_prev(thistime)->get_time();
 435                                 onion_skin_queue.push_back(keytime);
 436                                 thistime=keytime;
 437                         }
 438                 }
 439                 catch(...)
 440                 {  }
 441
 442                 try
 443                 {
 444                 Time thistime=time;
 445                 for(int i=0; i<onions[1]; i++)
 446                         {
 447                                 Time keytime=get_canvas()->keyframe_list().find_next(thistime)->get_time();
 448                                 onion_skin_queue.push_back(keytime);
 449                                 thistime=keytime;
 450                         }
 451                 }
 452                 catch(...)
 453                 {  }
 454
 455                 onion_layers=onion_skin_queue.size();
 456
 457                 onion_first_tile=false;
 458         }
 459 public:
 460
 461         WorkAreaTarget_Full(WorkArea *workarea,int w, int h):
 462                 workarea(workarea),
 463                 low_res(workarea->get_low_resolution_flag()),
 464                 w(w),
 465                 h(h),
 466                 refresh_id(workarea->refreshes),
 467                 onionskin(false),
 468                 onion_layers(0)
 469         {
 470                 set_canvas(workarea->get_canvas());
 471                 set_quality(workarea->get_quality());
 472         }
 473
 474         ~WorkAreaTarget_Full()
 475         {
 476         }
 477
 478         virtual bool set_rend_desc(synfig::RendDesc *newdesc)
 479         {
 480                 assert(workarea);
 481                 newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
 482                 if(low_res)
 483                 {
 484                         int div = workarea->get_low_res_pixel_size();
 485                         newdesc->set_wh(w/div,h/div);
 486                 }
 487                 else
 488                         newdesc->set_wh(w,h);
 489
 490                 if(
 491                                 workarea->get_w()!=w
 492                         ||      workarea->get_h()!=h
 493                 ) workarea->set_wh(w,h,4);
 494
 495                 surface.set_wh(newdesc->get_w(),newdesc->get_h());
 496
 497                 desc=*newdesc;
 498                 workarea->full_frame=true;
 499                 workarea->tile_book.resize(1);
 500                 return true;
 501         }
 502
 503         virtual int next_frame(Time& time)
 504         {
 505                 // Mark this tile as "up-to-date"
 506                 if(onionskin)
 507                         workarea->tile_book[0].second=refresh_id-onion_skin_queue.size();
 508                 else
 509                         workarea->tile_book[0].second=refresh_id;
 510
 511                 if(!onionskin)
 512                         return synfig::Target_Scanline::next_frame(time);
 513
 514                 onion_first_tile=(onion_layers==(signed)onion_skin_queue.size());
 515
 516                 if(!onion_skin_queue.empty())
 517                 {
 518                         time=onion_skin_queue.front();
 519                         onion_skin_queue.pop_front();
 520                 }
 521                 else
 522                         return 0;
 523                 return onion_skin_queue.size()+1;
 524         }
 525
 526
 527         virtual bool start_frame(synfig::ProgressCallback */*cb*/)
 528         {
 529                 return true;
 530         }
 531
 532         virtual Color * start_scanline(int scanline)
 533         {
 534                 return surface[scanline];
 535         }
 536
 537         virtual bool end_scanline()
 538         {
 539                 return true;
 540         }
 541
 542         static void free_buff(const guint8 *x) { free(const_cast<guint8*>(x)); }
 543
 544         virtual void end_frame()
 545         {
 546                 assert(surface);
 547
 548                 PixelFormat pf(PF_RGB);
 549
 550                 const int total_bytes(surface.get_w()*surface.get_h()*synfig::channels(pf));
 551
 552                 unsigned char *buffer((unsigned char*)malloc(total_bytes));
 553
 554                 if(!surface || !buffer)
 555                         return;
 556                 {
 557                         unsigned char *dest(buffer);
 558                         const Color *src(surface[0]);
 559                         int w(surface.get_w());
 560                         //int h(surface.get_h());
 561                         int x(surface.get_w()*surface.get_h());
 562                         //if(low_res) {
 563                         //      int div = workarea->get_low_res_pixel_size();
 564                         //      w/=div,h/=div;
 565                         //}
 566                         Color dark(0.6,0.6,0.6);
 567                         Color lite(0.8,0.8,0.8);
 568                         int tw=workarea->tile_w;
 569                         int th=workarea->tile_h;
 570                         if(low_res)
 571                         {
 572                                 int div = workarea->get_low_res_pixel_size();
 573                                 tw/=div;
 574                                 th/=div;
 575                         }
 576                         for(int i=0;i<x;i++)
 577                                 dest=Color2PixelFormat(
 578                                         Color::blend(
 579                                                 (*(src++)),
 580                                                 ((i/w)*8/th+(i%w)*8/tw)&1?dark:lite,
 581                                                 1.0f
 582                                         ).clamped(),
 583                                         pf,
 584                                         dest,
 585                                         App::gamma
 586                                 );
 587                 }
 588
 589                 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
 590
 591                 pixbuf=Gdk::Pixbuf::create_from_data(
 592                         buffer, // pointer to the data
 593                         Gdk::COLORSPACE_RGB, // the colorspace
 594                         ((pf&PF_A)==PF_A), // has alpha?
 595                         8, // bits per sample
 596                         surface.get_w(),        // width
 597                         surface.get_h(),        // height
 598                         surface.get_w()*synfig::channels(pf), // stride (pitch)
 599                         sigc::ptr_fun(&WorkAreaTarget::free_buff)
 600                 );
 601
 602                 if(low_res)
 603                 {
 604                         // We need to scale up
 605                         int div = workarea->get_low_res_pixel_size();
 606                         pixbuf=pixbuf->scale_simple(
 607                                 surface.get_w()*div,
 608                                 surface.get_h()*div,
 609                                 Gdk::INTERP_NEAREST
 610                         );
 611                 }
 612
 613                 int index=0;
 614
 615                 if(!onionskin || onion_first_tile || !workarea->tile_book[index].first)
 616                 {
 617                         workarea->tile_book[index].first=pixbuf;
 618                 }
 619                 else
 620                 {
 621                         pixbuf->composite(
 622                                 workarea->tile_book[index].first, // Dest
 623                                 0,//int dest_x
 624                                 0,//int dest_y
 625                                 pixbuf->get_width(), // dest width
 626                                 pixbuf->get_height(), // dest_height,
 627                                 0, // double offset_x
 628                                 0, // double offset_y
 629                                 1, // double scale_x
 630                                 1, // double scale_y
 631                                 Gdk::INTERP_NEAREST, // interp
 632                                 255/(onion_layers-onion_skin_queue.size()+1) //int overall_alpha
 633                         );
 634                 }
 635
 636                 workarea->queue_draw();
 637                 assert(workarea->tile_book[index].first);
 638         }
 639 };
 640
 641
 642
 643
 644 /* === M E T H O D S ======================================================= */
 645
 646
 647 WorkArea::WorkArea(etl::loose_handle<synfigapp::CanvasInterface> canvas_interface):
 648         Gtk::Table(3, 3, false), /* 3 columns by 3 rows*/
 649         Duckmatic(canvas_interface),
 650         canvas_interface(canvas_interface),
 651         canvas(canvas_interface->get_canvas()),
 652         scrollx_adjustment(0,-4,4,0.01,0.1),
 653         scrolly_adjustment(0,-4,4,0.01,0.1),
 654         w(TILE_SIZE),
 655         h(TILE_SIZE),
 656         last_event_time(0),
 657         progresscallback(0),
 658         dragging(DRAG_NONE),
 659         show_grid(false),
 660         tile_w(TILE_SIZE),
 661         tile_h(TILE_SIZE),
 662         timecode_width(0),
 663         timecode_height(0)
 664 {
 665         show_guides=true;
 666         curr_input_device=0;
 667         full_frame=false;
 668         allow_duck_clicks=true;
 669         allow_layer_clicks=true;
 670         render_idle_func_id=0;
 671         zoom=prev_zoom=1.0;
 672         quality=10;
 673         low_res_pixel_size=2;
 674         rendering=false;
 675         canceled_=false;
 676         low_resolution=true;
 677         pw=0.001;
 678         ph=0.001;
 679         last_focus_point=Point(0,0);
 680         onion_skin=false;
 681         onion_skins[0]=0;
 682         onion_skins[1]=0;
 683         queued=false;
 684         dirty_trap_enabled=false;
 685         solid_lines=true;
 686
 687         dirty_trap_queued=0;
 688
 689         meta_data_lock=false;
 690
 691         insert_renderer(new Renderer_Canvas,    000);
 692         insert_renderer(new Renderer_Grid,              100);
 693         insert_renderer(new Renderer_Guides,    200);
 694         insert_renderer(new Renderer_Ducks,             300);
 695         insert_renderer(new Renderer_BBox,              399);
 696         insert_renderer(new Renderer_Dragbox,   400);
 697         insert_renderer(new Renderer_Timecode,  500);
 698
 699         signal_duck_selection_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 700         signal_strokes_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 701         signal_grid_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 702         signal_grid_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::save_meta_data));
 703         signal_sketch_saved().connect(sigc::mem_fun(*this,&studio::WorkArea::save_meta_data));
 704
 705         // Not that it really makes a difference... (setting this to zero, that is)
 706         refreshes=0;
 707
 708         drawing_area=manage(new class Gtk::DrawingArea());
 709         drawing_area->show();
 710         drawing_area->set_extension_events(Gdk::EXTENSION_EVENTS_ALL);
 711
 712         drawing_frame=manage(new Gtk::Frame);
 713         drawing_frame->add(*drawing_area);
 714         //drawing_frame->set_shadow_type(Gtk::SHADOW_NONE);
 715         //drawing_frame->property_border_width()=5;
 716         //drawing_frame->modify_fg(Gtk::STATE_NORMAL,Gdk::Color("#00ffff"));
 717         //drawing_frame->modify_base(Gtk::STATE_NORMAL,Gdk::Color("#ff00ff"));
 718         /*drawing_frame->modify_fg(Gtk::STATE_ACTIVE,Gdk::Color("#00ffff"));
 719         drawing_frame->modify_base(Gtk::STATE_ACTIVE,Gdk::Color("#ff00ff"));
 720         drawing_frame->modify_bg(Gtk::STATE_ACTIVE,Gdk::Color("#00ff00"));
 721         drawing_frame->modify_fg(Gtk::STATE_INSENSITIVE,Gdk::Color("#00ffff"));
 722         drawing_frame->modify_base(Gtk::STATE_INSENSITIVE,Gdk::Color("#ff00ff"));
 723         drawing_frame->modify_bg(Gtk::STATE_INSENSITIVE,Gdk::Color("#00ff00"));
 724         drawing_frame->modify_fg(Gtk::STATE_SELECTED,Gdk::Color("#00ffff"));
 725         drawing_frame->modify_base(Gtk::STATE_SELECTED,Gdk::Color("#ff00ff"));
 726         drawing_frame->modify_bg(Gtk::STATE_SELECTED,Gdk::Color("#00ff00"));
 727         */
 728         //drawing_frame->set_state(Gtk::STATE_NORMAL);
 729
 730         drawing_frame->show();
 731
 732         attach(*drawing_frame, 1, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 733
 734         Gtk::IconSize iconsize=Gtk::IconSize::from_name("synfig-small_icon");
 735
 736
 737         // Create the vertical and horizontal rulers
 738         vruler = manage(new class Gtk::VRuler());
 739         hruler = manage(new class Gtk::HRuler());
 740         vruler->set_metric(Gtk::PIXELS);
 741         hruler->set_metric(Gtk::PIXELS);
 742         Pango::FontDescription fd(hruler->get_style()->get_font());
 743         fd.set_size(Pango::SCALE*8);
 744         vruler->modify_font(fd);
 745         hruler->modify_font(fd);
 746         vruler->show();
 747         hruler->show();
 748         attach(*vruler, 0, 1, 1, 2, Gtk::SHRINK|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 749         attach(*hruler, 1, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::SHRINK|Gtk::FILL, 0, 0);
 750         hruler->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_hruler_event));
 751         vruler->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_vruler_event));
 752         hruler->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 753         vruler->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 754
 755         // Create the menu button
 756         menubutton=manage(new class Gtk::Button());
 757         Gtk::Arrow *arrow1 = manage(new class Gtk::Arrow(Gtk::ARROW_RIGHT, Gtk::SHADOW_OUT));
 758         arrow1->set_size_request(10,10);
 759         menubutton->add(*arrow1);
 760         menubutton->show_all();
 761         menubutton->signal_pressed().connect(sigc::mem_fun(*this, &WorkArea::popup_menu));
 762         attach(*menubutton, 0, 1, 0, 1, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
 763
 764         Gtk::HBox *hbox = manage(new class Gtk::HBox(false, 0));
 765
 766         Gtk::VScrollbar *vscrollbar1 = manage(new class Gtk::VScrollbar(*get_scrolly_adjustment()));
 767         Gtk::HScrollbar *hscrollbar1 = manage(new class Gtk::HScrollbar(*get_scrollx_adjustment()));
 768         vscrollbar1->show();
 769         attach(*vscrollbar1, 2, 3, 1, 2, Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 770
 771         ZoomDial *zoomdial=manage(new class ZoomDial(iconsize));
 772         zoomdial->signal_zoom_in().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_in));
 773         zoomdial->signal_zoom_out().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_out));
 774         zoomdial->signal_zoom_fit().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_fit));
 775         zoomdial->signal_zoom_norm().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_norm));
 776
 777         hbox->pack_end(*hscrollbar1, Gtk::PACK_EXPAND_WIDGET,0);
 778         hscrollbar1->show();
 779         hbox->pack_start(*zoomdial, Gtk::PACK_SHRINK,0);
 780         zoomdial->show();
 781
 782         attach(*hbox, 0, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::SHRINK|Gtk::FILL, 0, 0);
 783         hbox->show();
 784
 785         drawing_area->add_events(Gdk::KEY_PRESS_MASK | Gdk::KEY_RELEASE_MASK);
 786         add_events(Gdk::KEY_PRESS_MASK);
 787         drawing_area->add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
 788         drawing_area->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::POINTER_MOTION_MASK);
 789
 790         // ----------------- Attach signals
 791
 792         drawing_area->signal_expose_event().connect(sigc::mem_fun(*this, &WorkArea::refresh));
 793         drawing_area->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_drawing_area_event));
 794         drawing_area->signal_size_allocate().connect(sigc::hide(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info)));
 795
 796
 797
 798         canvas_interface->signal_rend_desc_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 799         // When either of the scrolling adjustments change, then redraw.
 800         get_scrollx_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::queue_scroll));
 801         get_scrolly_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::queue_scroll));
 802         get_scrollx_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 803         get_scrolly_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 804
 805         get_canvas()->signal_meta_data_changed("grid_size").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 806         get_canvas()->signal_meta_data_changed("grid_snap").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 807         get_canvas()->signal_meta_data_changed("grid_show").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 808         get_canvas()->signal_meta_data_changed("guide_show").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 809         get_canvas()->signal_meta_data_changed("guide_x").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 810         get_canvas()->signal_meta_data_changed("guide_y").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 811         get_canvas()->signal_meta_data_changed("onion_skin").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 812         get_canvas()->signal_meta_data_changed("guide_snap").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 813         get_canvas()->signal_meta_data_changed("sketch").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 814         get_canvas()->signal_meta_data_changed("solid_lines").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 815
 816         queued=false;
 817         meta_data_lock=false;
 818         set_focus_point(Point(0,0));
 819
 820
 821         load_meta_data();
 822         // Load sketch
 823         {
 824                 String data(canvas->get_meta_data("sketch"));
 825                 if(!data.empty())
 826                 {
 827                         if(!load_sketch(data))
 828                                 load_sketch(dirname(canvas->get_file_name())+ETL_DIRECTORY_SEPARATOR+basename(data));
 829                 }
 830         }
 831
 832         hruler->property_max_size()=double(10.0);
 833         vruler->property_max_size()=double(10.0);
 834
 835         drawing_area->set_flags(drawing_area->get_flags()|Gtk::CAN_FOCUS);
 836 }
 837
 838 WorkArea::~WorkArea()
 839 {
 840 //      delete [] buffer;
 841
 842         // don't leave the render function queued if we are about to vanish;
 843         // that causes crashes
 844         if(render_idle_func_id)
 845                 render_idle_func_id=0;
 846 }
 847
 848 #ifdef SINGLE_THREADED
 849 bool
 850 WorkArea::get_updating()const
 851 {
 852         return App::single_threaded && async_renderer && async_renderer->updating;
 853 }
 854 #endif
 855
 856 #ifdef SINGLE_THREADED
 857 void
 858 WorkArea::stop_updating(bool cancel)
 859 {
 860         async_renderer->stop();
 861         if (cancel) canceled_=true;
 862 }
 863 #endif
 864
 865 void
 866 WorkArea::save_meta_data()
 867 {
 868         if(meta_data_lock)
 869                 return;
 870         meta_data_lock=true;
 871
 872         Vector s(get_grid_size());
 873         canvas_interface->set_meta_data("grid_size",strprintf("%f %f",s[0],s[1]));
 874         canvas_interface->set_meta_data("grid_snap",get_grid_snap()?"1":"0");
 875         canvas_interface->set_meta_data("guide_snap",get_guide_snap()?"1":"0");
 876         canvas_interface->set_meta_data("guide_show",get_show_guides()?"1":"0");
 877         canvas_interface->set_meta_data("grid_show",show_grid?"1":"0");
 878         canvas_interface->set_meta_data("onion_skin",onion_skin?"1":"0");
 879         {
 880                 String data;
 881                 GuideList::const_iterator iter;
 882                 for(iter=get_guide_list_x().begin();iter!=get_guide_list_x().end();++iter)
 883                 {
 884                         if(!data.empty())
 885                                 data+=' ';
 886                         data+=strprintf("%f",*iter);
 887                 }
 888                 if(!data.empty())
 889                         canvas_interface->set_meta_data("guide_x",data);
 890
 891                 data.clear();
 892                 for(iter=get_guide_list_y().begin();iter!=get_guide_list_y().end();++iter)
 893                 {
 894                         if(!data.empty())
 895                                 data+=' ';
 896                         data+=strprintf("%f",*iter);
 897                 }
 898                 if(!data.empty())
 899                         canvas_interface->set_meta_data("guide_y",data);
 900         }
 901
 902         if(get_sketch_filename().size())
 903         {
 904                 if(dirname(canvas->get_file_name())==dirname(get_sketch_filename()))
 905                         canvas_interface->set_meta_data("sketch",basename(get_sketch_filename()));
 906                 else
 907                         canvas_interface->set_meta_data("sketch",get_sketch_filename());
 908         }
 909
 910         meta_data_lock=false;
 911 }
 912
 913 void
 914 WorkArea::load_meta_data()
 915 {
 916         if(meta_data_lock)
 917                 return;
 918         meta_data_lock=true;
 919
 920         String data;
 921
 922         data=canvas->get_meta_data("grid_size");
 923         if(!data.empty())
 924         {
 925                 float gx(get_grid_size()[0]),gy(get_grid_size()[1]);
 926
 927                 String::iterator iter(find(data.begin(),data.end(),' '));
 928                 String tmp(data.begin(),iter);
 929
 930                 if(!tmp.empty())
 931                         gx=stratof(tmp);
 932                 else
 933                         synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 934
 935                 if(iter==data.end())
 936                         tmp.clear();
 937                 else
 938                         tmp=String(iter+1,data.end());
 939
 940                 if(!tmp.empty())
 941                         gy=stratof(tmp);
 942                 else
 943                         synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 944
 945                 set_grid_size(Vector(gx,gy));
 946         }
 947
 948         data=canvas->get_meta_data("grid_show");
 949         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 950                 show_grid=true;
 951         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 952                 show_grid=false;
 953
 954         data=canvas->get_meta_data("solid_lines");
 955         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 956                 solid_lines=true;
 957         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 958                 solid_lines=false;
 959
 960         data=canvas->get_meta_data("guide_show");
 961         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 962                 show_guides=true;
 963         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 964                 show_guides=false;
 965
 966         data=canvas->get_meta_data("grid_snap");
 967         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 968                 set_grid_snap(true);
 969         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 970                 set_grid_snap(false);
 971
 972         data=canvas->get_meta_data("guide_snap");
 973         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 974                 set_guide_snap(true);
 975         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 976                 set_guide_snap(false);
 977
 978         data=canvas->get_meta_data("onion_skin");
 979         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 980                 set_onion_skin(true);
 981         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 982                 set_onion_skin(false);
 983
 984         data=canvas->get_meta_data("guide_x");
 985         get_guide_list_x().clear();
 986         while(!data.empty())
 987         {
 988                 String::iterator iter(find(data.begin(),data.end(),' '));
 989                 String guide(data.begin(),iter);
 990
 991                 if(!guide.empty())
 992                         get_guide_list_x().push_back(stratof(guide));
 993
 994                 if(iter==data.end())
 995                         data.clear();
 996                 else
 997                         data=String(iter+1,data.end());
 998         }
 999         //sort(get_guide_list_x());
1000
1001         data=canvas->get_meta_data("guide_y");
1002         get_guide_list_y().clear();
1003         while(!data.empty())
1004         {
1005                 String::iterator iter(find(data.begin(),data.end(),' '));
1006                 String guide(data.begin(),iter);
1007
1008                 if(!guide.empty())
1009                         get_guide_list_y().push_back(stratof(guide));
1010
1011                 if(iter==data.end())
1012                         data.clear();
1013                 else
1014                         data=String(iter+1,data.end());
1015         }
1016         //sort(get_guide_list_y());
1017
1018         meta_data_lock=false;
1019         queue_draw();
1020 }
1021
1022 void
1023 WorkArea::set_onion_skin(bool x)
1024 {
1025         if(onion_skin==x)
1026                 return;
1027         onion_skin=x;
1028         save_meta_data();
1029         queue_render_preview();
1030         signal_onion_skin_changed()();
1031 }
1032
1033 bool
1034 WorkArea::get_onion_skin()const
1035 {
1036         return onion_skin;
1037 }
1038
1039 void WorkArea::set_onion_skins(int *onions)
1040 {
1041         onion_skins[0]=onions[0];
1042         onion_skins[1]=onions[1];
1043         if(onion_skin)
1044                 queue_render_preview();
1045 }
1046
1047 void
1048 WorkArea::enable_grid()
1049 {
1050         show_grid=true;
1051         save_meta_data();
1052         queue_draw();
1053 }
1054
1055 void
1056 WorkArea::disable_grid()
1057 {
1058         show_grid=false;
1059         save_meta_data();
1060         queue_draw();
1061 }
1062
1063 void
1064 WorkArea::set_show_guides(bool x)
1065 {
1066         show_guides=x;
1067         save_meta_data();
1068         queue_draw();
1069 }
1070
1071 void
1072 WorkArea::toggle_grid()
1073 {
1074         show_grid=!show_grid;
1075         save_meta_data();
1076         queue_draw();
1077 }
1078
1079 void
1080 WorkArea::set_low_resolution_flag(bool x)
1081 {
1082         if(x!=low_resolution)
1083         {
1084                 low_resolution=x;
1085                 queue_render_preview();
1086         }
1087 }
1088
1089 void
1090 WorkArea::toggle_low_resolution_flag()
1091 {
1092         set_low_resolution_flag(!get_low_resolution_flag());
1093 }
1094
1095 void
1096 WorkArea::popup_menu()
1097 {
1098         signal_popup_menu()();
1099 }
1100
1101 void
1102 WorkArea::set_grid_size(const synfig::Vector &s)
1103 {
1104         Duckmatic::set_grid_size(s);
1105         save_meta_data();
1106         queue_draw();
1107 }
1108
1109 void
1110 WorkArea::set_focus_point(const synfig::Point &point)
1111 {
1112         // These next three lines try to ensure that we place the
1113         // focus on a pixel boundary
1114         /*Point adjusted(point[0]/abs(get_pw()),point[1]/abs(get_ph()));
1115         adjusted[0]=(abs(adjusted[0]-floor(adjusted[0]))<0.5)?floor(adjusted[0])*abs(get_pw()):ceil(adjusted[0])*abs(get_ph());
1116         adjusted[1]=(abs(adjusted[1]-floor(adjusted[1]))<0.5)?floor(adjusted[1])*abs(get_ph()):ceil(adjusted[1])*abs(get_ph());
1117         */
1118         const synfig::Point& adjusted(point);
1119
1120         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1121         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1122         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1123
1124         get_scrollx_adjustment()->set_value(adjusted[0]*x_factor);
1125         get_scrolly_adjustment()->set_value(adjusted[1]*y_factor);
1126 }
1127
1128 synfig::Point
1129 WorkArea::get_focus_point()const
1130 {
1131         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1132         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1133         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1134
1135         return synfig::Point(get_scrollx_adjustment()->get_value()*x_factor, get_scrolly_adjustment()->get_value()*y_factor);
1136 }
1137
1138 bool
1139 WorkArea::set_wh(int W, int H,int CHAN)
1140 {
1141         // If our size is already set, don't set it again
1142         if(W==w && H==h && CHAN==bpp)
1143         {
1144                 return true;
1145         }
1146         if(W<=0 || H<=0 || CHAN<=0)
1147                 return false;
1148
1149         assert(W>0);
1150         assert(H>0);
1151         assert(CHAN>0);
1152
1153         // Set all of the parameters
1154         w=W;
1155         h=H;
1156         bpp=CHAN;
1157
1158         refresh_dimension_info();
1159
1160         tile_book.clear();
1161
1162         return true;
1163 }
1164
1165 bool
1166 WorkArea::on_key_press_event(GdkEventKey* event)
1167 {
1168         if(get_selected_ducks().empty())
1169                 return false;
1170
1171         Real multiplier(1.0);
1172
1173         if(Gdk::ModifierType(event->state)&GDK_SHIFT_MASK)
1174                 multiplier=10.0;
1175
1176         Vector nudge;
1177         switch(event->keyval)
1178         {
1179                 case GDK_Left:
1180                         nudge=Vector(-pw,0);
1181                         break;
1182                 case GDK_Right:
1183                         nudge=Vector(pw,0);
1184                         break;
1185                 case GDK_Up:
1186                         nudge=Vector(0,-ph);
1187                         break;
1188                 case GDK_Down:
1189                         nudge=Vector(0,ph);
1190                         break;
1191                 default:
1192                         return false;
1193                         break;
1194         }
1195
1196         synfigapp::Action::PassiveGrouper grouper(instance.get(),_("Nudge"));
1197
1198         // Grid snap does not apply to nudging
1199         bool grid_snap_holder(get_grid_snap());
1200         bool guide_snap_holder(get_guide_snap());
1201         set_grid_snap(false);
1202
1203         try {
1204                 start_duck_drag(get_selected_duck()->get_trans_point());
1205                 translate_selected_ducks(get_selected_duck()->get_trans_point()+nudge*multiplier);
1206                 end_duck_drag();
1207         }
1208         catch(String)
1209         {
1210                 canvas_view->duck_refresh_flag=true;
1211                 canvas_view->queue_rebuild_ducks();
1212         }
1213
1214         set_grid_snap(grid_snap_holder);
1215         set_guide_snap(guide_snap_holder);
1216
1217         return true;
1218 }
1219
1220 bool
1221 WorkArea::on_drawing_area_event(GdkEvent *event)
1222 {
1223         synfig::Point mouse_pos;
1224     float bezier_click_pos;
1225         const float radius((abs(pw)+abs(ph))*4);
1226         int button_pressed(0);
1227         float pressure(0);
1228         bool is_mouse(false);
1229         Gdk::ModifierType modifier(Gdk::ModifierType(0));
1230
1231         // Handle input stuff
1232         if(
1233                 event->any.type==GDK_MOTION_NOTIFY ||
1234                 event->any.type==GDK_BUTTON_PRESS ||
1235                 event->any.type==GDK_2BUTTON_PRESS ||
1236                 event->any.type==GDK_3BUTTON_PRESS ||
1237                 event->any.type==GDK_BUTTON_RELEASE
1238         )
1239         {
1240                 GdkDevice *device;
1241                 if(event->any.type==GDK_MOTION_NOTIFY)
1242                 {
1243                         device=event->motion.device;
1244                         modifier=Gdk::ModifierType(event->motion.state);
1245                 }
1246                 else
1247                 {
1248                         device=event->button.device;
1249                         modifier=Gdk::ModifierType(event->button.state);
1250                         drawing_area->grab_focus();
1251                 }
1252
1253                 // Make sure we recognize the device
1254                 if(curr_input_device)
1255                 {
1256                         if(curr_input_device!=device)
1257                         {
1258                                 assert(device);
1259                                 curr_input_device=device;
1260                                 signal_input_device_changed()(curr_input_device);
1261                         }
1262                 }
1263                 else if(device)
1264                 {
1265                         curr_input_device=device;
1266                         signal_input_device_changed()(curr_input_device);
1267                 }
1268
1269                 assert(curr_input_device);
1270
1271                 // Calculate the position of the
1272                 // input device in canvas coordinates
1273                 // and the buttons
1274                 if(!event->button.axes)
1275                 {
1276                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->button.x,event->button.y)));
1277                         button_pressed=event->button.button;
1278                         pressure=1.0f;
1279                         is_mouse=true;
1280                         if(isnan(event->button.x) || isnan(event->button.y))
1281                                 return false;
1282                 }
1283                 else
1284                 {
1285                         double x(event->button.axes[0]);
1286                         double y(event->button.axes[1]);
1287                         if(isnan(x) || isnan(y))
1288                                 return false;
1289
1290                         pressure=event->button.axes[2];
1291                         //synfig::info("pressure=%f",pressure);
1292                         pressure-=0.04f;
1293                         pressure/=1.0f-0.04f;
1294
1295
1296                         assert(!isnan(pressure));
1297
1298                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)));
1299
1300                         button_pressed=event->button.button;
1301
1302                         if(button_pressed==1 && pressure<0 && (event->any.type!=GDK_BUTTON_RELEASE && event->any.type!=GDK_BUTTON_PRESS))
1303                                 button_pressed=0;
1304                         if(pressure<0)
1305                                 pressure=0;
1306
1307                         //if(event->any.type==GDK_BUTTON_PRESS && button_pressed)
1308                         //      synfig::info("Button pressed on input device = %d",event->button.button);
1309
1310                         //if(event->button.axes[2]>0.1)
1311                         //      button_pressed=1;
1312                         //else
1313                         //      button_pressed=0;
1314                 }
1315         }
1316         // GDK mouse scrolling events
1317         else if(event->any.type==GDK_SCROLL)
1318         {
1319                 // GDK information needed to properly interpret mouse
1320                 // scrolling events are: scroll.state, scroll.x/scroll.y, and
1321                 // scroll.direction. The value of scroll.direction will be
1322                 // obtained later.
1323
1324                 modifier=Gdk::ModifierType(event->scroll.state);
1325                 mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->scroll.x,event->scroll.y)));
1326         }
1327
1328         // Handle the renderables
1329         {
1330                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
1331                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
1332                 {
1333                         if((*iter)->get_enabled())
1334                                 if((*iter)->event_vfunc(event))
1335                                 {
1336                                         // Event handled. Return true.
1337                                         return true;
1338                                 }
1339                 }
1340         }
1341
1342         // Event hasn't been handled, pass it down
1343         switch(event->type)
1344     {
1345         case GDK_BUTTON_PRESS:
1346                 {
1347                 switch(button_pressed)
1348                 {
1349                 case 1: // Attempt to click on a duck
1350                 {
1351                         etl::handle<Duck> duck;
1352                         dragging=DRAG_NONE;
1353
1354                         if(allow_duck_clicks)
1355                         {
1356                                 duck=find_duck(mouse_pos,radius);
1357
1358                                 if(duck)
1359                                 {
1360                                         // make a note of whether the duck we click on was selected or not
1361                                         if(duck_is_selected(duck))
1362                                                 clicked_duck=duck;
1363                                         else
1364                                         {
1365                                                 clicked_duck=0;
1366                                                 // if CTRL isn't pressed, clicking an unselected duck will unselect all other ducks
1367                                                 if(!(modifier&GDK_CONTROL_MASK))
1368                                                         clear_selected_ducks();
1369                                                 select_duck(duck);
1370                                         }
1371                                 }
1372                         }
1373                         //else
1374                         //      clear_selected_ducks();
1375
1376
1377
1378                         selected_bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1379                         if(duck)
1380                         {
1381                                 if (!duck->get_editable())
1382                                         return true;
1383
1384                                 //get_selected_duck()->signal_user_click(0)();
1385                                 //if(clicked_duck)clicked_duck->signal_user_click(0)();
1386
1387                                 // if the user is holding shift while clicking on a tangent duck, consider splitting the tangent
1388                                 if (event->motion.state&GDK_SHIFT_MASK && duck->get_type() == Duck::TYPE_TANGENT)
1389                                 {
1390                                         synfigapp::ValueDesc value_desc = duck->get_value_desc();
1391
1392                                         // we have the tangent, but need the vertex - that's the parent
1393                                         if (value_desc.parent_is_value_node()) {
1394                                                 ValueNode_Composite::Handle parent_value_node = value_desc.get_parent_value_node();
1395
1396                                                 // if the tangent isn't split, then split it
1397                                                 if (!((*(parent_value_node->get_link("split")))(get_time()).get(bool())))
1398                                                 {
1399                                                         if (get_canvas_view()->canvas_interface()->
1400                                                                 change_value(synfigapp::ValueDesc(parent_value_node,
1401                                                                                                                                   parent_value_node->get_link_index_from_name("split")),
1402                                                                                          true))
1403                                                         {
1404                                                                 // rebuild the ducks from scratch, so the tangents ducks aren't connected
1405                                                                 get_canvas_view()->rebuild_ducks();
1406
1407                                                                 // reprocess the mouse click
1408                                                                 return on_drawing_area_event(event);
1409                                                         }
1410                                                         else
1411                                                                 return true;
1412                                                 }
1413                                         } else {
1414                                                 // I don't know how to access the vertex from the tangent duck when originally drawing the bline in the bline tool
1415
1416                                                 // synfig::ValueNode::Handle vn = value_desc.get_value_node();
1417                                                 synfig::info("parent isn't value node?  shift-drag-tangent doesn't work in bline tool yet...");
1418                                         }
1419                                 }
1420
1421                                 dragging=DRAG_DUCK;
1422                                 drag_point=mouse_pos;
1423                                 //drawing_area->queue_draw();
1424                                 start_duck_drag(mouse_pos);
1425                                 get_canvas_view()->reset_cancel_status();
1426                                 return true;
1427                         }
1428 // I commented out this section because
1429 // it was causing issues when rotoscoping.
1430 // At the moment, we don't need it, so
1431 // this was the easiest way to fix the problem.
1432 /*
1433                         else
1434                         if(selected_bezier)
1435                         {
1436                                 selected_duck=0;
1437                                 selected_bezier->signal_user_click(0)(bezier_click_pos);
1438                         }
1439 */
1440                         else
1441                         {
1442                                 //clear_selected_ducks();
1443                                 selected_bezier=0;
1444                                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_LEFT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1445                                 {
1446                                         // Check for a guide click
1447                                         GuideList::iterator iter;
1448
1449                                         iter=find_guide_x(mouse_pos,radius);
1450                                         if(iter==get_guide_list_x().end())
1451                                         {
1452                                                 curr_guide_is_x=false;
1453                                                 iter=find_guide_y(mouse_pos,radius);
1454                                         }
1455                                         else
1456                                                 curr_guide_is_x=true;
1457                                         if(iter!=get_guide_list_x().end() && iter!=get_guide_list_y().end())
1458                                         {
1459                                                 dragging=DRAG_GUIDE;
1460                                                 curr_guide=iter;
1461                                                 return true;
1462                                         }
1463
1464
1465                                         // All else fails, try making a selection box
1466                                         dragging=DRAG_BOX;
1467                                         curr_point=drag_point=mouse_pos;
1468                                         return true;
1469                                 }
1470                         }
1471                         break;
1472                 }
1473                 case 2: // Attempt to drag and move the window
1474                 {
1475                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1476                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1477                         if(duck)
1478                                 duck->signal_user_click(1)();
1479                         else
1480                         if(bezier)
1481                                 bezier->signal_user_click(1)(bezier_click_pos);
1482
1483                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_MIDDLE,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1484                         if(is_mouse)
1485                         {
1486                                 dragging=DRAG_WINDOW;
1487                                 drag_point=mouse_pos;
1488                                 signal_user_click(1)(mouse_pos);
1489                         }
1490                         break;
1491                 }
1492                 case 3: // Attempt to either get info on a duck, or open the menu
1493                 {
1494                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1495                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1496
1497                         Layer::Handle layer(get_canvas()->find_layer(mouse_pos));
1498                         if(duck)
1499                         {
1500                                 if(get_selected_ducks().size()<=1)
1501                                         duck->signal_user_click(2)();
1502                                 else
1503                                         canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MULTIPLE_DUCKS_CLICKED,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1504                                 return true;
1505                         }
1506                         else if(bezier)
1507                         {
1508                                 bezier->signal_user_click(2)(bezier_click_pos);
1509                                 return true;
1510                         }
1511                         else if (layer)
1512                         {
1513                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_RIGHT,mouse_pos))==Smach::RESULT_OK)
1514                                         return false;
1515                                 return true;
1516                         }
1517                         else
1518                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1519                         /*
1520                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1521                         {
1522                                 //popup_menu();
1523                                 return true;
1524                         }
1525                         */
1526                         break;
1527                 }
1528                 case 4:
1529                         signal_user_click(3)(mouse_pos);
1530                         break;
1531                 case 5:
1532                         signal_user_click(4)(mouse_pos);
1533                         break;
1534                 default:
1535                         break;
1536                 }
1537                 }
1538                 break;
1539         case GDK_MOTION_NOTIFY:
1540                 curr_point=mouse_pos;
1541
1542                 if(event->motion.time-last_event_time<25)
1543                         return true;
1544                 else
1545                         last_event_time=event->motion.time;
1546
1547                 signal_cursor_moved_();
1548
1549                 // Guide/Duck highlights on hover
1550                 if(dragging==DRAG_NONE)
1551                 {
1552                         GuideList::iterator iter;
1553
1554                         iter=find_guide_x(mouse_pos,radius);
1555                         if(iter==get_guide_list_x().end())
1556                                 iter=find_guide_y(mouse_pos,radius);
1557
1558                         if(iter!=curr_guide)
1559                         {
1560                                 curr_guide=iter;
1561                                 drawing_area->queue_draw();
1562                         }
1563
1564                         etl::handle<Duck> duck;
1565                         duck=find_duck(mouse_pos,radius);
1566                         if(duck!=hover_duck)
1567                         {
1568                                 hover_duck=duck;
1569                                 drawing_area->queue_draw();
1570                         }
1571                 }
1572
1573
1574                 if(dragging==DRAG_DUCK)
1575                 {
1576                         if(canvas_view->get_cancel_status())
1577                         {
1578                                 dragging=DRAG_NONE;
1579                                 canvas_view->queue_rebuild_ducks();
1580                                 return true;
1581                         }
1582                         /*
1583                         Point point((mouse_pos-selected_duck->get_origin())/selected_duck->get_scalar());
1584                         if(get_grid_snap())
1585                         {
1586                                 point[0]=floor(point[0]/grid_size[0]+0.5)*grid_size[0];
1587                                 point[1]=floor(point[1]/grid_size[1]+0.5)*grid_size[1];
1588                         }
1589                         selected_duck->set_point(point);
1590                         */
1591
1592                         //Point p(mouse_pos);
1593
1594                         set_axis_lock(event->motion.state&GDK_SHIFT_MASK);
1595
1596                         translate_selected_ducks(mouse_pos);
1597
1598                         drawing_area->queue_draw();
1599                 }
1600
1601                 if(dragging==DRAG_BOX)
1602                 {
1603                         curr_point=mouse_pos;
1604                         drawing_area->queue_draw();
1605                 }
1606
1607                 if(dragging==DRAG_GUIDE)
1608                 {
1609                         if(curr_guide_is_x)
1610                                 *curr_guide=mouse_pos[0];
1611                         else
1612                                 *curr_guide=mouse_pos[1];
1613                         drawing_area->queue_draw();
1614                 }
1615
1616                 if(dragging!=DRAG_WINDOW)
1617                 {       // Update those triangle things on the rulers
1618                         const synfig::Point point(mouse_pos);
1619                         hruler->property_position()=Distance(point[0],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1620                         vruler->property_position()=Distance(point[1],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1621                 }
1622
1623                 if(dragging == DRAG_WINDOW)
1624                         set_focus_point(get_focus_point() + mouse_pos-drag_point);
1625                 else if (event->motion.state & GDK_BUTTON1_MASK &&
1626                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_LEFT,
1627                                                                                                                                   mouse_pos,pressure,modifier)) == Smach::RESULT_ACCEPT)
1628                         return true;
1629                 else if (event->motion.state & GDK_BUTTON2_MASK &&
1630                                  canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_MIDDLE,
1631                                                                                                                                    mouse_pos, pressure, modifier)) == Smach::RESULT_ACCEPT)
1632                         return true;
1633                 else if (event->motion.state & GDK_BUTTON3_MASK &&
1634                                  canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_RIGHT,
1635                                                                                                                                    mouse_pos, pressure, modifier)) == Smach::RESULT_ACCEPT)
1636                         return true;
1637                 else if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_MOTION, BUTTON_NONE,
1638                                                                                                                                   mouse_pos, pressure,modifier)) == Smach::RESULT_ACCEPT)
1639                         return true;
1640
1641                 break;
1642
1643         case GDK_BUTTON_RELEASE:
1644         {
1645                 bool ret(false);
1646
1647                 if(dragging==DRAG_GUIDE)
1648                 {
1649                         dragging=DRAG_NONE;
1650                         save_meta_data();
1651                         return true;
1652                 }
1653                 else
1654                 if(dragging==DRAG_DUCK)
1655                 {
1656                         synfigapp::Action::PassiveGrouper grouper(instance.get(),_("Move"));
1657                         dragging=DRAG_NONE;
1658                         //translate_selected_ducks(mouse_pos);
1659                         set_axis_lock(false);
1660
1661                         try{
1662                         get_canvas_view()->duck_refresh_flag=false;
1663                         get_canvas_view()->duck_refresh_needed=false;
1664                         const bool drag_did_anything(end_duck_drag());
1665                         get_canvas_view()->duck_refresh_flag=true;
1666                         if(!drag_did_anything)
1667                         {
1668                                 // if we originally clicked on a selected duck ...
1669                                 if(clicked_duck)
1670                                 {
1671                                         // ... and CTRL is pressed, then just toggle the clicked duck
1672                                         //     otherwise make the clicked duck the only selected duck
1673                                         if(modifier&GDK_CONTROL_MASK)
1674                                                 unselect_duck(clicked_duck);
1675                                         else
1676                                         {
1677                                                 clear_selected_ducks();
1678                                                 select_duck(clicked_duck);
1679                                         }
1680                                         clicked_duck->signal_user_click(0)();
1681                                 }
1682                         }
1683                         else
1684                         {
1685                                 if(canvas_view->duck_refresh_needed)
1686                                         canvas_view->queue_rebuild_ducks();
1687                                 return true;
1688                         }
1689                         }catch(String)
1690                         {
1691                                 canvas_view->duck_refresh_flag=true;
1692                                 canvas_view->queue_rebuild_ducks();
1693                                 return true;
1694                         }
1695                         //queue_draw();
1696                         clicked_duck=0;
1697
1698                         ret=true;
1699                 }
1700
1701                 if(dragging==DRAG_BOX)
1702                 {
1703                         dragging=DRAG_NONE;
1704                         if((drag_point-mouse_pos).mag()>radius/2.0f)
1705                         {
1706                                 if(canvas_view->get_smach().process_event(EventBox(drag_point,mouse_pos,MouseButton(event->button.button),modifier))==Smach::RESULT_ACCEPT)
1707                                         return true;
1708
1709                                 // when dragging a box around some ducks:
1710                                 // SHIFT selects; CTRL toggles; SHIFT+CTRL unselects; <none> clears all then selects
1711                                 if(modifier&GDK_SHIFT_MASK)
1712                                         select_ducks_in_box(drag_point,mouse_pos);
1713
1714                                 if(modifier&GDK_CONTROL_MASK)
1715                                         toggle_select_ducks_in_box(drag_point,mouse_pos);
1716                                 else if(!(modifier&GDK_SHIFT_MASK))
1717                                 {
1718                                         clear_selected_ducks();
1719                                         select_ducks_in_box(drag_point,mouse_pos);
1720                                 }
1721                                 ret=true;
1722                         }
1723                         else
1724                         {
1725                                 if(allow_layer_clicks)
1726                                 {
1727                                         Layer::Handle layer(get_canvas()->find_layer(drag_point));
1728                                         //if(layer)
1729                                         {
1730                                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_LEFT,mouse_pos,modifier))==Smach::RESULT_OK)
1731                                                         signal_layer_selected_(layer);
1732                                                 ret=true;
1733                                         }
1734                                 }
1735                                 else
1736                                 {
1737                                         signal_user_click(0)(mouse_pos);
1738                                 }
1739                         }
1740                 }
1741
1742                 dragging=DRAG_NONE;
1743
1744                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_UP,MouseButton(event->button.button),mouse_pos,pressure,modifier))==Smach::RESULT_ACCEPT)
1745                         ret=true;
1746
1747                 return ret;
1748         }
1749                 break;
1750         case GDK_SCROLL:
1751         {
1752                 // Handle a mouse scrolling event like Xara Xtreme and
1753                 // Inkscape:
1754
1755                 // Scroll up/down: scroll up/down
1756                 // Shift + scroll up/down: scroll left/right
1757                 // Control + scroll up/down: zoom in/out
1758
1759                 if(modifier&GDK_CONTROL_MASK)
1760                 {
1761
1762                         // The zoom is performed while preserving the pointer
1763                         // position as a fixed point (similarly to Xara Xtreme and
1764                         // Inkscape).
1765
1766                         // The strategy used below is to scroll to the updated
1767                         // position, then zoom. This is easy to implement within
1768                         // the present architecture, but has the disadvantage of
1769                         // triggering multiple visible refreshes. Note: 1.25 is
1770                         // the hard wired ratio in zoom_in()/zoom_out(). The
1771                         // variable "drift" compensates additional inaccuracies in
1772                         // the zoom. There is also an additional minus sign for
1773                         // the inverted y coordinates.
1774
1775                         // FIXME: One might want to figure out where in the code
1776                         // this empirical drift is been introduced.
1777
1778                         const synfig::Point scroll_point(get_scrollx_adjustment()->get_value(),get_scrolly_adjustment()->get_value());
1779                         const double drift = 0.052;
1780
1781                         switch(event->scroll.direction)
1782                         {
1783                                 case GDK_SCROLL_UP:
1784                                 case GDK_SCROLL_RIGHT:
1785                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1.25-(1+drift)));
1786                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1.25-(1+drift)));
1787                                         zoom_in();
1788                                         break;
1789                                 case GDK_SCROLL_DOWN:
1790                                 case GDK_SCROLL_LEFT:
1791                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1/1.25-(1+drift)));
1792                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1/1.25-(1+drift)));
1793                                         zoom_out();
1794                                         break;
1795                                 default:
1796                                         break;
1797                         }
1798                 }
1799                 else if(modifier&GDK_SHIFT_MASK)
1800                 {
1801                         // Scroll in either direction by 20 pixels. Ideally, the
1802                         // amount of pixels per scrolling event should be
1803                         // configurable. Xara Xtreme currently uses an (hard
1804                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1805
1806                         const int scroll_pixel = 20;
1807
1808                         switch(event->scroll.direction)
1809                         {
1810                                 case GDK_SCROLL_UP:
1811                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1812                                         break;
1813                                 case GDK_SCROLL_DOWN:
1814                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1815                                         break;
1816                                 case GDK_SCROLL_LEFT:
1817                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1818                                         break;
1819                                 case GDK_SCROLL_RIGHT:
1820                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1821                                         break;
1822                                 default:
1823                                         break;
1824                         }
1825                 }
1826                 else
1827                 {
1828                         // Scroll in either direction by 20 pixels. Ideally, the
1829                         // amount of pixels per scrolling event should be
1830                         // configurable. Xara Xtreme currently uses an (hard
1831                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1832
1833                         const int scroll_pixel = 20;
1834
1835                         switch(event->scroll.direction)
1836                         {
1837                                 case GDK_SCROLL_UP:
1838                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1839                                         break;
1840                                 case GDK_SCROLL_DOWN:
1841                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1842                                         break;
1843                                 case GDK_SCROLL_LEFT:
1844                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1845                                         break;
1846                                 case GDK_SCROLL_RIGHT:
1847                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1848                                         break;
1849                                 default:
1850                                         break;
1851                         }
1852                 }
1853         }
1854                 break;
1855         default:
1856                 break;
1857         }
1858                 return false;
1859 }
1860
1861 bool
1862 WorkArea::on_hruler_event(GdkEvent */*event*/)
1863 {
1864 /*
1865         switch(event->type)
1866     {
1867         case GDK_BUTTON_PRESS:
1868                 if(dragging==DRAG_NONE)
1869                 {
1870                         dragging=DRAG_GUIDE;
1871                         curr_guide=get_guide_list_y().insert(get_guide_list_y().begin());
1872                         curr_guide_is_x=false;
1873                 }
1874                 return true;
1875                 break;
1876
1877         case GDK_MOTION_NOTIFY:
1878                 // Guide movement
1879                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1880                 {
1881                         double y,x;
1882                         if(event->button.axes)
1883                         {
1884                                 x=(event->button.axes[0]);
1885                                 y=(event->button.axes[1]);
1886                         }
1887                         else
1888                         {
1889                                 x=event->button.x;
1890                                 y=event->button.y;
1891                         }
1892
1893                         if(isnan(y) || isnan(x))
1894                                 return false;
1895
1896                         *curr_guide=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)))[1];
1897
1898                         queue_draw();
1899                 }
1900                 return true;
1901                 break;
1902
1903         case GDK_BUTTON_RELEASE:
1904                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1905                 {
1906                         dragging=DRAG_NONE;
1907                         get_guide_list_y().erase(curr_guide);
1908                 }
1909                 break;
1910                 return true;
1911         default:
1912                 break;
1913         }
1914 */
1915         return false;
1916 }
1917
1918 bool
1919 WorkArea::on_vruler_event(GdkEvent */*event*/)
1920 {
1921 /*
1922         switch(event->type)
1923     {
1924         case GDK_BUTTON_PRESS:
1925                 if(dragging==DRAG_NONE)
1926                 {
1927                         dragging=DRAG_GUIDE;
1928                         curr_guide=get_guide_list_x().insert(get_guide_list_x().begin());
1929                         curr_guide_is_x=true;
1930                 }
1931                 return true;
1932                 break;
1933         case GDK_BUTTON_RELEASE:
1934                 if(dragging==DRAG_GUIDE && curr_guide_is_x==true)
1935                 {
1936                         dragging=DRAG_NONE;
1937                         get_guide_list_x().erase(curr_guide);
1938                 }
1939                 break;
1940                 return true;
1941         default:
1942                 break;
1943         }
1944 */
1945         return false;
1946 }
1947
1948
1949 void
1950 WorkArea::refresh_dimension_info()
1951 {
1952         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1953
1954         canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1955         canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1956
1957         pw=canvaswidth/w;
1958         ph=canvasheight/h;
1959
1960         scrollx_adjustment.set_page_increment(abs(get_grid_size()[0]));
1961         scrollx_adjustment.set_step_increment(abs(pw));
1962         scrollx_adjustment.set_lower(-abs(canvaswidth));
1963         scrollx_adjustment.set_upper(abs(canvaswidth));
1964         scrolly_adjustment.set_lower(-abs(canvasheight));
1965         scrolly_adjustment.set_upper(abs(canvasheight));
1966         scrolly_adjustment.set_step_increment(abs(ph));
1967         scrolly_adjustment.set_page_increment(abs(get_grid_size()[1]));
1968
1969
1970
1971         if(drawing_area->get_width()<=0 || drawing_area->get_height()<=0 || w==0 || h==0)
1972                 return;
1973
1974         const synfig::Point focus_point(get_focus_point());
1975         const synfig::Real x(focus_point[0]/pw+drawing_area->get_width()/2-w/2);
1976         const synfig::Real y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
1977
1978         window_tl[0]=rend_desc.get_tl()[0]-pw*x;
1979         window_br[0]=rend_desc.get_br()[0]+pw*(drawing_area->get_width()-x-w);
1980
1981         window_tl[1]=rend_desc.get_tl()[1]-ph*y;
1982         window_br[1]=rend_desc.get_br()[1]+ph*(drawing_area->get_height()-y-h);
1983
1984         hruler->property_lower()=Distance(window_tl[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1985         hruler->property_upper()=Distance(window_br[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1986         vruler->property_lower()=Distance(window_tl[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1987         vruler->property_upper()=Distance(window_br[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1988
1989         view_window_changed();
1990 }
1991
1992
1993 synfig::Point
1994 WorkArea::screen_to_comp_coords(synfig::Point pos)const
1995 {
1996         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1997         //synfig::Vector::value_type canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1998         //synfig::Vector::value_type canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1999         //synfig::Vector::value_type pw=canvaswidth/w;
2000         //synfig::Vector::value_type ph=canvasheight/h;
2001         Vector focus_point=get_focus_point();
2002         synfig::Vector::value_type x=focus_point[0]/pw+drawing_area->get_width()/2-w/2;
2003         synfig::Vector::value_type y=focus_point[1]/ph+drawing_area->get_height()/2-h/2;
2004
2005         return rend_desc.get_tl()-synfig::Point(pw*x,ph*y)+synfig::Point(pw*pos[0],ph*pos[1]);
2006 }
2007
2008 synfig::Point
2009 WorkArea::comp_to_screen_coords(synfig::Point /*pos*/)const
2010 {
2011         synfig::warning("WorkArea::comp_to_screen_coords: Not yet implemented");
2012         return synfig::Point();
2013 }
2014
2015 int
2016 WorkArea::next_unrendered_tile(int refreshes)const
2017 {
2018         //assert(!tile_book.empty());
2019         if(tile_book.empty())
2020                 return -1;
2021
2022         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2023
2024         const synfig::Vector focus_point(get_focus_point());
2025
2026         // Calculate the window coordinates of the top-left
2027         // corner of the canvas.
2028         const synfig::Vector::value_type
2029                 x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2030                 y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2031
2032         int div = low_res_pixel_size;
2033         const int width_in_tiles(w/tile_w+((low_resolution?((w/div)%(tile_w/div)):(w%tile_w))?1:0));
2034         const int height_in_tiles(h/tile_h+(h%tile_h?1:0));
2035
2036         int
2037                 u(0),v(0),
2038                 u1(int(-x/tile_w)),
2039                 v1(int(-y/tile_h)),
2040                 u2(int((-x+drawing_area->get_width())/tile_w+1)),
2041                 v2(int((-y+drawing_area->get_height())/tile_h+1));
2042
2043         if(u2>width_in_tiles)u2=width_in_tiles;
2044         if(v2>height_in_tiles)v2=height_in_tiles;
2045         if(u1<0)u1=0;
2046         if(v1<0)v1=0;
2047
2048         int last_good_tile(-1);
2049
2050         for(v=v1;v<v2;v++)
2051                 for(u=u1;u<u2;u++)
2052                 {
2053                         int index(v*width_in_tiles+u);
2054                         if(tile_book[index].second<refreshes)
2055                         {
2056                                 last_good_tile=index;
2057                                 if(rand()%8==0)
2058                                         return index;
2059                         }
2060                 }
2061         return last_good_tile;
2062 }
2063
2064 /*
2065 template <typename F, typename T=WorkAreaRenderer, typename R=typename F::result_type>
2066 class handle2ptr_t : public std::unary_function<typename etl::handle<T>,R>
2067 {
2068 private:
2069         F func;
2070 public:
2071         handle2ptr_t(const F &func):func(func) { };
2072
2073         R operator()(typename etl::handle<T> x) { return func(*x); }
2074 };
2075
2076 template <typename F>
2077 handle2ptr_t<F>
2078 handle2ptr(F func)
2079 {
2080         return handle2ptr_t<F>(func);
2081 }
2082         for_each(
2083                 renderer_set_.begin(),
2084                 renderer_set_.end(),
2085                 handle2ptr(
2086                         sigc::bind(
2087                                 sigc::bind(
2088                                         sigc::mem_fun(
2089                                                 &WorkAreaRenderer::render_vfunc
2090                                         ),
2091                                         Gdk::Rectangle(event->area)
2092                                 ),
2093                                 drawing_area->get_window()
2094                         )
2095                 )
2096         );
2097 */
2098
2099 bool
2100 WorkArea::refresh(GdkEventExpose*event)
2101 {
2102         assert(get_canvas());
2103
2104         drawing_area->get_window()->clear();
2105
2106         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2107
2108         const synfig::Vector focus_point(get_focus_point());
2109
2110         // Update the old focus point
2111         last_focus_point=focus_point;
2112
2113         // Draw out the renderables
2114         {
2115                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
2116                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
2117                 {
2118                         if((*iter)->get_enabled())
2119                                 (*iter)->render_vfunc(
2120                                         drawing_area->get_window(),
2121                                         Gdk::Rectangle(&event->area)
2122                                 );
2123                 }
2124         }
2125
2126         // Calculate the window coordinates of the top-left
2127         // corner of the canvas.
2128         //const synfig::Vector::value_type
2129         //      x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2130         //      y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2131
2132         //const synfig::Vector::value_type window_startx(window_tl[0]);
2133         //const synfig::Vector::value_type window_endx(window_br[0]);
2134         //const synfig::Vector::value_type window_starty(window_tl[1]);
2135         //const synfig::Vector::value_type window_endy(window_br[1]);
2136
2137         Glib::RefPtr<Gdk::GC> gc=Gdk::GC::create(drawing_area->get_window());
2138
2139         // If we are in animate mode, draw a red border around the screen
2140         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2141         {
2142 // #define USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2143 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2144                 // This method of drawing the red border doesn't work on any
2145                 // Gtk theme which uses the crux-engine, hcengine, industrial,
2146                 // mist, or ubuntulooks engine, such as the default ubuntu
2147                 // 'Human' theme.
2148                 drawing_frame->modify_bg(Gtk::STATE_NORMAL,Gdk::Color("#FF0000"));
2149 #else
2150                 // So let's do it in a more primitive fashion.
2151                 gc->set_rgb_fg_color(Gdk::Color("#FF0000"));
2152                 gc->set_line_attributes(1,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
2153                 drawing_area->get_window()->draw_rectangle(
2154                         gc,
2155                         false,  // Fill?
2156                         0,0,    // x,y
2157                         drawing_area->get_width()-1,drawing_area->get_height()-1); // w,h
2158 #endif
2159         }
2160 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2161         else
2162                 drawing_frame->unset_bg(Gtk::STATE_NORMAL);
2163 #endif
2164
2165         return true;
2166 }
2167
2168 void
2169 WorkArea::done_rendering()
2170 {
2171 /*
2172         assert(buffer);
2173         assert(w>0);
2174         assert(h>0);
2175         pix_buf=Gdk::Pixbuf::create_from_data(
2176                 buffer, // pointer to the data
2177                 Gdk::COLORSPACE_RGB, // the colorspace
2178                 true, // has alpha?
2179                 8, // bits per sample
2180                 w,      // width
2181                 h,      // height
2182                 w*bpp); // stride (pitch)
2183         assert(pix_buf);
2184 */
2185 }
2186
2187
2188 void
2189 WorkArea::set_quality(int x)
2190 {
2191         if(x==quality)
2192                 return;
2193         quality=x;
2194         queue_render_preview();
2195 }
2196
2197 void
2198 WorkArea::set_low_res_pixel_size(int x)
2199 {
2200         if(x==low_res_pixel_size)
2201                 return;
2202         low_res_pixel_size=x;
2203         queue_render_preview();
2204 }
2205
2206 namespace studio
2207 {
2208 class WorkAreaProgress : public synfig::ProgressCallback
2209 {
2210         WorkArea *work_area;
2211         ProgressCallback *cb;
2212
2213 public:
2214
2215         WorkAreaProgress(WorkArea *work_area,ProgressCallback *cb):
2216                 work_area(work_area),cb(cb)
2217         {
2218                 assert(cb);
2219         }
2220
2221         virtual bool
2222         task(const std::string &str)
2223         {
2224                 if(work_area->dirty)
2225                         return false;
2226                 return cb->task(str);
2227         }
2228
2229         virtual bool
2230         error(const std::string &err)
2231         {
2232                 if(work_area->dirty)
2233                         return false;
2234                 return cb->error(err);
2235         }
2236
2237         virtual bool
2238         amount_complete(int current, int total)
2239         {
2240                 if(work_area->dirty)
2241                         return false;
2242                 return cb->amount_complete(current,total);
2243         }
2244 };
2245 }
2246
2247 bool
2248 studio::WorkArea::async_update_preview()
2249 {
2250 #ifdef SINGLE_THREADED
2251         if (get_updating())
2252         {
2253                 stop_updating();
2254                 queue_render_preview();
2255                 return false;
2256         }
2257 #endif
2258
2259         async_renderer=0;
2260
2261         queued=false;
2262         canceled_=false;
2263         get_canvas_view()->reset_cancel_status();
2264
2265         // This object will mark us as busy until
2266         // we are done.
2267         //studio::App::Busy busy;
2268
2269         //WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2270         //synfig::ProgressCallback *cb=&callback;
2271
2272         if(!is_visible())return false;
2273
2274         /*
2275         // If we are queued to render the scene at the next idle
2276         // go ahead and de-queue it.
2277         if(render_idle_func_id)
2278         {
2279                 g_source_remove(render_idle_func_id);
2280                 //queued=false;
2281                 render_idle_func_id=0;
2282         }
2283         */
2284
2285         dirty=false;
2286         get_canvas_view()->reset_cancel_status();
2287
2288         //bool ret=false;
2289         RendDesc desc=get_canvas()->rend_desc();
2290
2291         int w=(int)(desc.get_w()*zoom);
2292         int h=(int)(desc.get_h()*zoom);
2293
2294         // ensure that the size we draw is at least one pixel in each dimension
2295         int min_size = low_resolution ? low_res_pixel_size : 1;
2296         if (w < min_size) w = min_size;
2297         if (h < min_size) h = min_size;
2298
2299         // Setup the description parameters
2300         desc.set_antialias(1);
2301         desc.set_time(cur_time);
2302
2303         set_rend_desc(desc);
2304
2305         // Create the render target
2306         handle<Target> target;
2307
2308         // if we have lots of pixels to render and the tile renderer isn't disabled, use it
2309         int div;
2310         div = low_resolution ? low_res_pixel_size : 1;
2311         if ((w*h > 240*div*135*div && !getenv("SYNFIG_DISABLE_TILE_RENDER")) || getenv("SYNFIG_FORCE_TILE_RENDER"))
2312         {
2313                 // do a tile render
2314                 handle<WorkAreaTarget> trgt(new class WorkAreaTarget(this,w,h));
2315
2316                 trgt->set_rend_desc(&desc);
2317                 trgt->set_onion_skin(get_onion_skin(), onion_skins);
2318                 target=trgt;
2319         }
2320         else
2321         {
2322                 // do a scanline render
2323                 handle<WorkAreaTarget_Full> trgt(new class WorkAreaTarget_Full(this,w,h));
2324
2325                 trgt->set_rend_desc(&desc);
2326                 trgt->set_onion_skin(get_onion_skin(), onion_skins);
2327                 target=trgt;
2328         }
2329
2330         // We can rest assured that our time has already
2331         // been set, so there is no need to have to
2332         // recalculate that over again.
2333         // UPDATE: This is kind of needless with
2334         // the way that time is handled now in SYNFIG.
2335         //target->set_avoid_time_sync(true);
2336         async_renderer=new AsyncRenderer(target);
2337         async_renderer->signal_finished().connect(
2338                 sigc::mem_fun(this,&WorkArea::async_update_finished)
2339         );
2340
2341         rendering=true;
2342         async_renderer->start();
2343
2344         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2345
2346         rendering=true;
2347         cb->task(_("Rendering..."));
2348         rendering=true;
2349
2350         return true;
2351 }
2352
2353 void
2354 studio::WorkArea::async_update_finished()
2355 {
2356         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2357
2358         rendering=false;
2359
2360         if(!async_renderer)
2361                 return;
2362
2363         // If we completed successfully, then
2364         // we aren't dirty anymore
2365         if(async_renderer->has_success())
2366         {
2367                 dirty=false;
2368                 //queued=false;
2369                 cb->task(_("Idle"));
2370         }
2371         else
2372         {
2373                 dirty=true;
2374                 cb->task(_("Render Failed"));
2375         }
2376         //get_canvas_view()->reset_cancel_status();
2377         done_rendering();
2378 }
2379
2380 bool
2381 studio::WorkArea::sync_update_preview()
2382 {
2383         //      const Time &time(cur_time);
2384
2385         canceled_=false;
2386         get_canvas_view()->reset_cancel_status();
2387
2388         async_renderer=0;
2389
2390 again:
2391         // This object will mark us as busy until
2392         // we are done.
2393         studio::App::Busy busy;
2394
2395         WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2396         synfig::ProgressCallback *cb=&callback;
2397
2398         // We don't want to render if we are already rendering
2399         if(rendering)
2400         {
2401                 dirty=true;
2402                 return false;
2403         }
2404
2405         if(!is_visible())return false;
2406         get_canvas()->set_time(get_time());
2407         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2408         signal_rendering()();
2409
2410         // If we are queued to render the scene at the next idle
2411         // go ahead and de-queue it.
2412         if(render_idle_func_id)
2413         {
2414                 g_source_remove(render_idle_func_id);
2415                 //queued=false;
2416                 render_idle_func_id=0;
2417         }
2418         // Start rendering
2419         rendering=true;
2420
2421         dirty=false;
2422         get_canvas_view()->reset_cancel_status();
2423
2424         RendDesc desc=get_canvas()->rend_desc();
2425         //newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
2426
2427         int w=(int)(desc.get_w()*zoom);
2428         int h=(int)(desc.get_h()*zoom);
2429
2430         // Setup the description parameters
2431         desc.set_antialias(1);
2432         desc.set_time(cur_time);
2433         //desc.set_wh(w,h);
2434
2435         set_rend_desc(desc);
2436
2437         // Create the render target
2438         handle<WorkAreaTarget> target(new class WorkAreaTarget(this,w,h));
2439
2440         target->set_rend_desc(&desc);
2441
2442         // We can rest assured that our time has already
2443         // been set, so there is no need to have to
2444         // recalculate that over again.
2445         target->set_avoid_time_sync(true);
2446
2447         if(cb)
2448                 cb->task(strprintf(_("Rendering canvas %s..."),get_canvas()->get_name().c_str()));
2449
2450         bool ret = target->render(cb);
2451
2452         if(!ret && !get_canvas_view()->get_cancel_status() && dirty)
2453         {
2454                 rendering=false;
2455                 //canceled_=true;
2456                 goto again;
2457         }
2458         if(get_canvas_view()->get_cancel_status())
2459                 canceled_=true;
2460
2461         if(cb)
2462         {
2463                 if(ret)
2464                         cb->task(_("Idle"));
2465                 else
2466                         cb->task(_("Render Failed"));
2467                 cb->amount_complete(0,1);
2468         }
2469
2470         // Refresh the work area to make sure that
2471         // it is being displayed correctly
2472         drawing_area->queue_draw();
2473
2474         // If we completed successfully, then
2475         // we aren't dirty anymore
2476         if(ret)
2477         {
2478                 dirty=false;
2479                 //queued=false;
2480         }
2481         else dirty=true;
2482         rendering=false;
2483         //get_canvas_view()->reset_cancel_status();
2484         done_rendering();
2485         return ret;
2486 }
2487
2488 void
2489 studio::WorkArea::async_render_preview(synfig::Time time)
2490 {
2491         cur_time=time;
2492         //tile_book.clear();
2493
2494         refreshes+=5;
2495         if(!is_visible())return;
2496
2497         get_canvas()->set_time(get_time());
2498         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2499         signal_rendering()();
2500
2501         async_update_preview();
2502 }
2503 void
2504 WorkArea::async_render_preview()
2505 {
2506         return async_render_preview(get_canvas_view()->get_time());
2507 }
2508
2509 bool
2510 studio::WorkArea::sync_render_preview(synfig::Time time)
2511 {
2512         cur_time=time;
2513         //tile_book.clear();
2514         refreshes+=5;
2515         if(!is_visible())return false;
2516         return sync_update_preview();
2517 }
2518
2519 bool
2520 WorkArea::sync_render_preview()
2521 {
2522         return sync_render_preview(get_canvas_view()->get_time());
2523 }
2524
2525 void
2526 WorkArea::sync_render_preview_hook()
2527 {
2528         sync_render_preview(get_canvas_view()->get_time());
2529 }
2530
2531 void
2532 WorkArea::queue_scroll()
2533 {
2534 //      const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2535
2536         const synfig::Point focus_point(get_focus_point());
2537
2538         const synfig::Real
2539                 new_x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2540                 new_y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2541
2542         const synfig::Real
2543                 old_x(last_focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2544                 old_y(last_focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2545
2546         // If the coordinates didn't change, we shouldn't queue a draw
2547         if(old_x==new_x && old_y==new_y)
2548                 return;
2549
2550         const int
2551                 dx(round_to_int(old_x)-round_to_int(new_x)),
2552                 dy(round_to_int(old_y)-round_to_int(new_y));
2553
2554         drawing_area->get_window()->scroll(-dx,-dy);
2555
2556         if (timecode_width && timecode_height)
2557         {
2558                 drawing_area->queue_draw_area(4,       4,    4+timecode_width,    4+timecode_height);
2559                 drawing_area->queue_draw_area(4-dx, 4-dy, 4-dx+timecode_width, 4-dy+timecode_height);
2560         }
2561
2562 #ifndef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2563         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2564         {
2565                 int maxx = drawing_area->get_width()-1;
2566                 int maxy = drawing_area->get_height()-1;
2567
2568                 if (dx > 0)
2569                 {
2570                         drawing_area->queue_draw_area(      0, 0,       1, maxy);
2571                         drawing_area->queue_draw_area(maxx-dx, 0, maxx-dx, maxy);
2572                 }
2573                 else if (dx < 0)
2574                 {
2575                         drawing_area->queue_draw_area(   maxx, 0,    maxx, maxy);
2576                         drawing_area->queue_draw_area(    -dx, 0,     -dx, maxy);
2577                 }
2578                 if (dy > 0)
2579                 {
2580                         drawing_area->queue_draw_area(0,       0, maxx,       1);
2581                         drawing_area->queue_draw_area(0, maxy-dy, maxx, maxy-dy);
2582                 }
2583                 else if (dy < 0)
2584                 {
2585                         drawing_area->queue_draw_area(0,    maxy, maxx,    maxy);
2586                         drawing_area->queue_draw_area(0,     -dy, maxx,     -dy);
2587                 }
2588         }
2589 #endif // USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2590
2591         last_focus_point=focus_point;
2592 }
2593
2594 void
2595 studio::WorkArea::zoom_in()
2596 {
2597         set_zoom(zoom*1.25);
2598 }
2599
2600 void
2601 studio::WorkArea::zoom_out()
2602 {
2603         set_zoom(zoom/1.25);
2604 }
2605
2606 void
2607 studio::WorkArea::zoom_fit()
2608 {
2609         float new_zoom(min(drawing_area->get_width() * zoom / w,
2610                                            drawing_area->get_height() * zoom / h) * 0.995);
2611         if (zoom / new_zoom > 0.995 && new_zoom / zoom > 0.995)
2612         {
2613                 set_zoom(prev_zoom);
2614                 return set_focus_point(previous_focus);
2615         }
2616         previous_focus = get_focus_point();
2617         prev_zoom = zoom;
2618         set_zoom(new_zoom);
2619         set_focus_point(Point(0,0));
2620 }
2621
2622 void
2623 studio::WorkArea::zoom_norm()
2624 {
2625         if (zoom == 1.0) return set_zoom(prev_zoom);
2626         prev_zoom = zoom;
2627         set_zoom(1.0f);
2628 }
2629
2630 gboolean
2631 studio::WorkArea::__render_preview(gpointer data)
2632 {
2633         WorkArea *work_area(static_cast<WorkArea*>(data));
2634
2635         // there's no point anyone trying to cancel the timer now - it's gone off already
2636         work_area->render_idle_func_id = 0;
2637
2638         work_area->queued=false;
2639         work_area->async_render_preview(work_area->get_canvas_view()->get_time());
2640
2641         return 0;
2642 }
2643
2644 void
2645 studio::WorkArea::queue_render_preview()
2646 {
2647         //synfig::info("queue_render_preview(): called for %s", get_canvas_view()->get_time().get_string().c_str());
2648
2649         if(queued==true)
2650         {
2651                 return;
2652                 //synfig::info("queue_render_preview(): already queued, unqueuing");
2653 /*              if(render_idle_func_id)
2654                         g_source_remove(render_idle_func_id);
2655                 render_idle_func_id=0;
2656                 queued=false;
2657 */
2658                 //async_renderer=0;
2659         }
2660
2661         if(dirty_trap_enabled)
2662         {
2663                 dirty_trap_queued++;
2664                 return;
2665         }
2666
2667         int queue_time=50;
2668
2669         if(rendering)
2670                 queue_time+=250;
2671
2672
2673         if(queued==false)
2674         {
2675                 //synfig::info("queue_render_preview(): (re)queuing...");
2676                 //render_idle_func_id=g_idle_add_full(G_PRIORITY_DEFAULT,__render_preview,this,NULL);
2677                 render_idle_func_id=g_timeout_add_full(
2678                         G_PRIORITY_DEFAULT,     // priority -
2679                         queue_time,                     // interval - the time between calls to the function, in milliseconds (1/1000ths of a second)
2680                         __render_preview,       // function - function to call
2681                         this,                           // data     - data to pass to function
2682                         NULL);                          // notify   - function to call when the idle is removed, or NULL
2683                 queued=true;
2684         }
2685 /*      else if(rendering)
2686         {
2687                 refreshes+=5;
2688                 dirty=true;
2689                 queue_draw();
2690         }
2691 */
2692 }
2693
2694 DirtyTrap::DirtyTrap(WorkArea *work_area):work_area(work_area)
2695 {
2696         work_area->dirty_trap_enabled=true;
2697
2698         work_area->dirty_trap_queued=0;
2699 }
2700
2701 DirtyTrap::~DirtyTrap()
2702 {
2703         work_area->dirty_trap_enabled=false;
2704         if(work_area->dirty_trap_queued)
2705                 work_area->queue_render_preview();
2706 }
2707
2708 void
2709 studio::WorkArea::queue_draw_preview()
2710 {
2711         drawing_area->queue_draw();
2712 }
2713
2714 void
2715 studio::WorkArea::set_cursor(const Gdk::Cursor& x)
2716 {
2717         drawing_area->get_window()->set_cursor(x);
2718 }
2719 void
2720 studio::WorkArea::set_cursor(Gdk::CursorType x)
2721 {
2722         drawing_area->get_window()->set_cursor(Gdk::Cursor(x));
2723 }
2724
2725 //#include "iconcontroller.h"
2726 void
2727 studio::WorkArea::refresh_cursor()
2728 {
2729 //      set_cursor(IconController::get_tool_cursor(canvas_view->get_smach().get_state_name(),drawing_area->get_window()));
2730 }
2731
2732 void
2733 studio::WorkArea::reset_cursor()
2734 {
2735         drawing_area->get_window()->set_cursor(Gdk::Cursor(Gdk::TOP_LEFT_ARROW));
2736 //      set_cursor(Gdk::TOP_LEFT_ARROW);
2737 }
2738
2739 void
2740 studio::WorkArea::set_zoom(float z)
2741 {
2742         z=max(1.0f/128.0f,min(128.0f,z));
2743         if(z==zoom)
2744                 return;
2745         zoom = z;
2746         refresh_dimension_info();
2747         /*if(async_renderer)
2748         {
2749                 async_renderer->stop();
2750                 async_renderer=0;
2751         }*/
2752         refreshes+=5;
2753         async_update_preview();
2754         //queue_render_preview();
2755 }
2756
2757 void
2758 WorkArea::set_selected_value_node(etl::loose_handle<synfig::ValueNode> x)
2759 {
2760         if(x!=selected_value_node_)
2761         {
2762                 selected_value_node_=x;
2763                 queue_draw();
2764         }
2765 }
2766
2767 void
2768 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x)
2769 {
2770         renderer_set_.insert(x);
2771         x->set_work_area(this);
2772         queue_draw();
2773 }
2774
2775 void
2776 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x, int priority)
2777 {
2778         x->set_priority(priority);
2779         insert_renderer(x);
2780 }
2781
2782 void
2783 WorkArea::erase_renderer(const etl::handle<WorkAreaRenderer> &x)
2784 {
2785         x->set_work_area(0);
2786         renderer_set_.erase(x);
2787         queue_draw();
2788 }
2789
2790 void
2791 WorkArea::resort_render_set()
2792 {
2793         std::set<etl::handle<WorkAreaRenderer> > tmp(
2794                 renderer_set_.begin(),
2795                 renderer_set_.end()
2796         );
2797         renderer_set_.swap(tmp);
2798         queue_draw();
2799 }