synfig-studio/src/gtkmm/workarea.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file workarea.cpp
   3 **      \brief Template Header
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (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 "widget_color.h"
  60 #include <synfig/distance.h>
  61 #include "workarearenderer.h"
  62
  63 #include "renderer_canvas.h"
  64 #include "renderer_grid.h"
  65 #include "renderer_guides.h"
  66 #include "renderer_timecode.h"
  67 #include "renderer_ducks.h"
  68 #include "renderer_dragbox.h"
  69 #include "renderer_bbox.h"
  70 #include "asyncrenderer.h"
  71 #include <gtkmm/frame.h>
  72
  73 #include <synfig/mutex.h>
  74
  75 #include "general.h"
  76
  77 #endif
  78
  79 /* === U S I N G =========================================================== */
  80
  81 using namespace std;
  82 using namespace etl;
  83 using namespace synfig;
  84 using namespace studio;
  85
  86 /* === M A C R O S ========================================================= */
  87
  88 #define RULER_FIX               15
  89
  90 #ifndef stratof
  91 #define stratof(X) (atof((X).c_str()))
  92 #define stratoi(X) (atoi((X).c_str()))
  93 #endif
  94
  95
  96 /* === G L O B A L S ======================================================= */
  97
  98 /* === C L A S S E S ======================================================= */
  99
 100 class studio::WorkAreaTarget : public synfig::Target_Tile
 101 {
 102 public:
 103         WorkArea *workarea;
 104         bool low_res;
 105         int w,h;
 106         int real_tile_w,real_tile_h;
 107         //std::vector<Glib::RefPtr<Gdk::Pixbuf> >::iterator tile_iter;
 108
 109         int twindow_start, twindow_width, twindow_height, twindow_pad;
 110         int refresh_id;
 111
 112         bool onionskin;
 113         bool onion_first_tile;
 114         int onion_layers;
 115
 116         std::list<synfig::Time> onion_skin_queue;
 117
 118         synfig::Mutex mutex;
 119
 120         void set_onion_skin(bool x, int *onions)
 121         {
 122                 onionskin=x;
 123
 124                 Time time(rend_desc().get_time_start());
 125
 126                 if(!onionskin)
 127                         return;
 128                 onion_skin_queue.push_back(time);
 129
 130                 try
 131                 {
 132                 Time thistime=time;
 133                 for(int i=0; i<onions[0]; i++)
 134                         {
 135                                 Time keytime=get_canvas()->keyframe_list().find_prev(thistime)->get_time();
 136                                 onion_skin_queue.push_back(keytime);
 137                                 thistime=keytime;
 138                         }
 139                 }
 140                 catch(...)
 141                 {  }
 142
 143                 try
 144                 {
 145                 Time thistime=time;
 146                 for(int i=0; i<onions[1]; i++)
 147                         {
 148                                 Time keytime=get_canvas()->keyframe_list().find_next(thistime)->get_time();
 149                                 onion_skin_queue.push_back(keytime);
 150                                 thistime=keytime;
 151                         }
 152                 }
 153                 catch(...)
 154                 {  }
 155
 156                 onion_layers=onion_skin_queue.size();
 157
 158                 onion_first_tile=false;
 159         }
 160 public:
 161
 162         WorkAreaTarget(WorkArea *workarea,int w, int h):
 163                 workarea(workarea),
 164                 low_res(workarea->get_low_resolution_flag()),
 165                 w(w),
 166                 h(h),
 167                 real_tile_w(workarea->tile_w),
 168                 real_tile_h(workarea->tile_h),
 169                 refresh_id(workarea->refreshes),
 170                 onionskin(false),
 171                 onion_layers(0)
 172         {
 173                 //set_remove_alpha();
 174                 //set_avoid_time_sync();
 175                 set_clipping(true);
 176                 if(low_res)
 177                 {
 178                         int div = workarea->get_low_res_pixel_size();
 179                         set_tile_w(workarea->tile_w/div);
 180                         set_tile_h(workarea->tile_h/div);
 181                 }
 182                 else
 183                 {
 184                         set_tile_w(workarea->tile_w);
 185                         set_tile_h(workarea->tile_h);
 186                 }
 187                 set_canvas(workarea->get_canvas());
 188                 set_quality(workarea->get_quality());
 189         }
 190
 191         ~WorkAreaTarget()
 192         {
 193                 workarea->queue_draw();
 194         }
 195
 196         virtual bool set_rend_desc(synfig::RendDesc *newdesc)
 197         {
 198                 assert(workarea);
 199                 newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
 200                 if(low_res) {
 201                         int div = workarea->get_low_res_pixel_size();
 202                         newdesc->set_wh(w/div,h/div);
 203                 }
 204                 else
 205                         newdesc->set_wh(w,h);
 206
 207                 if(
 208                                 workarea->get_w()!=w
 209                         ||      workarea->get_h()!=h
 210                 ) workarea->set_wh(w,h,4);
 211
 212                 workarea->full_frame=false;
 213
 214                 desc=*newdesc;
 215                 return true;
 216         }
 217
 218         virtual int total_tiles()const
 219         {
 220                 int tw(rend_desc().get_w()/get_tile_w());
 221                 int th(rend_desc().get_h()/get_tile_h());
 222                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 223                 if(rend_desc().get_h()%get_tile_h()!=0)th++;
 224                 return tw*th;
 225         }
 226
 227         virtual int next_frame(Time& time)
 228         {
 229                 synfig::Mutex::Lock lock(mutex);
 230
 231                 if(!onionskin)
 232                         return synfig::Target_Tile::next_frame(time);
 233
 234                 onion_first_tile=(onion_layers==(signed)onion_skin_queue.size());
 235
 236                 if(!onion_skin_queue.empty())
 237                 {
 238                         time=onion_skin_queue.front();
 239                         onion_skin_queue.pop_front();
 240                 }
 241                 else
 242                         return 0;
 243
 244                 return onion_skin_queue.size()+1;
 245         }
 246
 247         virtual int next_tile(int& x, int& y)
 248         {
 249                 synfig::Mutex::Lock lock(mutex);
 250                 //if(workarea->tile_queue.empty()) return 0;
 251
 252                 //int curr_tile(workarea->tile_queue.front());
 253                 //workarea->tile_queue.pop_front();
 254                 int curr_tile(workarea->next_unrendered_tile(refresh_id-onion_skin_queue.size()));
 255                 if(curr_tile<0)
 256                         return 0;
 257
 258                 // Width of the image(in tiles)
 259                 int tw(rend_desc().get_w()/get_tile_w());
 260                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 261
 262                 y=(curr_tile/tw)*get_tile_w();
 263                 x=(curr_tile%tw)*get_tile_h();
 264
 265                 // Mark this tile as "up-to-date"
 266                 if(onionskin)
 267                         workarea->tile_book[curr_tile].second=refresh_id-onion_skin_queue.size();
 268                 else
 269                         workarea->tile_book[curr_tile].second=refresh_id;
 270
 271                 return total_tiles()-curr_tile+1;
 272         }
 273
 274
 275         virtual bool start_frame(synfig::ProgressCallback */*cb*/)
 276         {
 277                 synfig::Mutex::Lock lock(mutex);
 278
 279                 int tw(rend_desc().get_w()/get_tile_w());
 280                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 281                 int th(rend_desc().get_h()/get_tile_h());
 282                 if(rend_desc().get_h()%get_tile_h()!=0)th++;
 283
 284                 twindow_start=0;
 285                 twindow_width=tw;
 286                 twindow_height=th;
 287                 twindow_pad=0;
 288
 289                 workarea->tile_book.resize(total_tiles());
 290                 //tile_iter=workarea->tile_book.begin()+twindow_start;
 291                 return true;
 292         }
 293
 294         static void free_buff(const guint8 *x) { free(const_cast<guint8*>(x)); }
 295
 296         virtual bool add_tile(const synfig::Surface &surface, int x, int y)
 297         {
 298                 synfig::Mutex::Lock lock(mutex);
 299                 assert(surface);
 300
 301                 PixelFormat pf(PF_RGB);
 302
 303                 const int total_bytes(get_tile_w()*get_tile_h()*synfig::channels(pf));
 304
 305                 unsigned char *buffer((unsigned char*)malloc(total_bytes));
 306
 307                 if(!surface || !buffer)
 308                         return false;
 309                 {
 310                         unsigned char *dest(buffer);
 311                         const Color *src(surface[0]);
 312                         int w(get_tile_w());
 313                         int h(get_tile_h());
 314                         int x(surface.get_w()*surface.get_h());
 315                         //if(low_res) {
 316                         //      int div = workarea->get_low_res_pixel_size();
 317                         //      w/=div,h/=div;
 318                         //}
 319                         Color dark(0.6,0.6,0.6);
 320                         Color lite(0.8,0.8,0.8);
 321                         for(int i=0;i<x;i++)
 322                                 dest=Color2PixelFormat(
 323                                         Color::blend(
 324                                                 (*(src++)),
 325                                                 ((i/surface.get_w())*8/h+(i%surface.get_w())*8/w)&1?dark:lite,
 326                                                 1.0f
 327                                         ).clamped(),
 328                                         pf,dest,App::gamma
 329                                 );
 330                 }
 331
 332                 x/=get_tile_w();
 333                 y/=get_tile_h();
 334                 int tw(rend_desc().get_w()/get_tile_w());
 335                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 336                 unsigned int index=y*tw+x;
 337
 338                 // Sanity check
 339                 if(index>workarea->tile_book.size())
 340                         return false;
 341
 342                 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
 343
 344                 pixbuf=Gdk::Pixbuf::create_from_data(
 345                         buffer, // pointer to the data
 346                         Gdk::COLORSPACE_RGB, // the colorspace
 347                         ((pf&PF_A)==PF_A), // has alpha?
 348                         8, // bits per sample
 349                         surface.get_w(),        // width
 350                         surface.get_h(),        // height
 351                         surface.get_w()*synfig::channels(pf), // stride (pitch)
 352                         sigc::ptr_fun(&WorkAreaTarget::free_buff)
 353                 );
 354
 355                 if(low_res)
 356                 {
 357                         // We need to scale up
 358                         int div = workarea->get_low_res_pixel_size();
 359                         pixbuf=pixbuf->scale_simple(
 360                                 surface.get_w()*div,
 361                                 surface.get_h()*div,
 362                                 Gdk::INTERP_NEAREST
 363                         );
 364                 }
 365
 366                 if(!onionskin || onion_first_tile || !workarea->tile_book[index].first)
 367                 {
 368                         workarea->tile_book[index].first=pixbuf;
 369                 }
 370                 else
 371                 {
 372                         pixbuf->composite(
 373                                 workarea->tile_book[index].first, // Dest
 374                                 0,//int dest_x
 375                                 0,//int dest_y
 376                                 pixbuf->get_width(), // dest width
 377                                 pixbuf->get_height(), // dest_height,
 378                                 0, // double offset_x
 379                                 0, // double offset_y
 380                                 1, // double scale_x
 381                                 1, // double scale_y
 382                                 Gdk::INTERP_NEAREST, // interp
 383                                 255/(onion_layers-onion_skin_queue.size()+1) //int overall_alpha
 384                         );
 385                 }
 386
 387                 //if(index%2)
 388                         workarea->queue_draw();
 389                 assert(workarea->tile_book[index].first);
 390                 return true;
 391         }
 392
 393         virtual void end_frame()
 394         {
 395                 //workarea->queue_draw();
 396         }
 397 };
 398
 399
 400 class studio::WorkAreaTarget_Full : public synfig::Target_Scanline
 401 {
 402 public:
 403         WorkArea *workarea;
 404         bool low_res;
 405         int w,h;
 406         int real_tile_w,real_tile_h;
 407         //std::vector<Glib::RefPtr<Gdk::Pixbuf> >::iterator tile_iter;
 408
 409         int twindow_start, twindow_width, twindow_height, twindow_pad;
 410         int refresh_id;
 411
 412         bool onionskin;
 413         bool onion_first_tile;
 414         int onion_layers;
 415
 416         Surface surface;
 417
 418         std::list<synfig::Time> onion_skin_queue;
 419
 420         void set_onion_skin(bool x, int *onions)
 421         {
 422                 onionskin=x;
 423
 424                 Time time(rend_desc().get_time_start());
 425
 426                 if(!onionskin)
 427                         return;
 428                 onion_skin_queue.push_back(time);
 429                 //onion_skin_queue.push_back(time-1);
 430                 //onion_skin_queue.push_back(time+1);
 431                 try
 432                 {
 433                 Time thistime=time;
 434                 for(int i=0; i<onions[0]; i++)
 435                         {
 436                                 Time keytime=get_canvas()->keyframe_list().find_prev(thistime)->get_time();
 437                                 onion_skin_queue.push_back(keytime);
 438                                 thistime=keytime;
 439                         }
 440                 }
 441                 catch(...)
 442                 {  }
 443
 444                 try
 445                 {
 446                 Time thistime=time;
 447                 for(int i=0; i<onions[1]; i++)
 448                         {
 449                                 Time keytime=get_canvas()->keyframe_list().find_next(thistime)->get_time();
 450                                 onion_skin_queue.push_back(keytime);
 451                                 thistime=keytime;
 452                         }
 453                 }
 454                 catch(...)
 455                 {  }
 456
 457                 onion_layers=onion_skin_queue.size();
 458
 459                 onion_first_tile=false;
 460         }
 461 public:
 462
 463         WorkAreaTarget_Full(WorkArea *workarea,int w, int h):
 464                 workarea(workarea),
 465                 low_res(workarea->get_low_resolution_flag()),
 466                 w(w),
 467                 h(h),
 468                 refresh_id(workarea->refreshes),
 469                 onionskin(false),
 470                 onion_layers(0)
 471         {
 472                 set_canvas(workarea->get_canvas());
 473                 set_quality(workarea->get_quality());
 474         }
 475
 476         ~WorkAreaTarget_Full()
 477         {
 478         }
 479
 480         virtual bool set_rend_desc(synfig::RendDesc *newdesc)
 481         {
 482                 assert(workarea);
 483                 newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
 484                 if(low_res)
 485                 {
 486                         int div = workarea->get_low_res_pixel_size();
 487                         newdesc->set_wh(w/div,h/div);
 488                 }
 489                 else
 490                         newdesc->set_wh(w,h);
 491
 492                 if(
 493                                 workarea->get_w()!=w
 494                         ||      workarea->get_h()!=h
 495                 ) workarea->set_wh(w,h,4);
 496
 497                 surface.set_wh(newdesc->get_w(),newdesc->get_h());
 498
 499                 desc=*newdesc;
 500                 workarea->full_frame=true;
 501                 workarea->tile_book.resize(1);
 502                 return true;
 503         }
 504
 505         virtual int next_frame(Time& time)
 506         {
 507                 // Mark this tile as "up-to-date"
 508                 if(onionskin)
 509                         workarea->tile_book[0].second=refresh_id-onion_skin_queue.size();
 510                 else
 511                         workarea->tile_book[0].second=refresh_id;
 512
 513                 if(!onionskin)
 514                         return synfig::Target_Scanline::next_frame(time);
 515
 516                 onion_first_tile=(onion_layers==(signed)onion_skin_queue.size());
 517
 518                 if(!onion_skin_queue.empty())
 519                 {
 520                         time=onion_skin_queue.front();
 521                         onion_skin_queue.pop_front();
 522                 }
 523                 else
 524                         return 0;
 525                 return onion_skin_queue.size()+1;
 526         }
 527
 528
 529         virtual bool start_frame(synfig::ProgressCallback */*cb*/)
 530         {
 531                 return true;
 532         }
 533
 534         virtual Color * start_scanline(int scanline)
 535         {
 536                 return surface[scanline];
 537         }
 538
 539         virtual bool end_scanline()
 540         {
 541                 return true;
 542         }
 543
 544         static void free_buff(const guint8 *x) { free(const_cast<guint8*>(x)); }
 545
 546         virtual void end_frame()
 547         {
 548                 assert(surface);
 549
 550                 PixelFormat pf(PF_RGB);
 551
 552                 const int total_bytes(surface.get_w()*surface.get_h()*synfig::channels(pf));
 553
 554                 unsigned char *buffer((unsigned char*)malloc(total_bytes));
 555
 556                 if(!surface || !buffer)
 557                         return;
 558                 {
 559                         unsigned char *dest(buffer);
 560                         const Color *src(surface[0]);
 561                         int w(surface.get_w());
 562                         //int h(surface.get_h());
 563                         int x(surface.get_w()*surface.get_h());
 564                         //if(low_res) {
 565                         //      int div = workarea->get_low_res_pixel_size();
 566                         //      w/=div,h/=div;
 567                         //}
 568                         Color dark(0.6,0.6,0.6);
 569                         Color lite(0.8,0.8,0.8);
 570                         int tw=workarea->tile_w;
 571                         int th=workarea->tile_h;
 572                         if(low_res)
 573                         {
 574                                 int div = workarea->get_low_res_pixel_size();
 575                                 tw/=div;
 576                                 th/=div;
 577                         }
 578                         for(int i=0;i<x;i++)
 579                                 dest=Color2PixelFormat(
 580                                         Color::blend(
 581                                                 (*(src++)),
 582                                                 ((i/w)*8/th+(i%w)*8/tw)&1?dark:lite,
 583                                                 1.0f
 584                                         ).clamped(),
 585                                         pf,
 586                                         dest,
 587                                         App::gamma
 588                                 );
 589                 }
 590
 591                 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
 592
 593                 pixbuf=Gdk::Pixbuf::create_from_data(
 594                         buffer, // pointer to the data
 595                         Gdk::COLORSPACE_RGB, // the colorspace
 596                         ((pf&PF_A)==PF_A), // has alpha?
 597                         8, // bits per sample
 598                         surface.get_w(),        // width
 599                         surface.get_h(),        // height
 600                         surface.get_w()*synfig::channels(pf), // stride (pitch)
 601                         sigc::ptr_fun(&WorkAreaTarget::free_buff)
 602                 );
 603
 604                 if(low_res)
 605                 {
 606                         // We need to scale up
 607                         int div = workarea->get_low_res_pixel_size();
 608                         pixbuf=pixbuf->scale_simple(
 609                                 surface.get_w()*div,
 610                                 surface.get_h()*div,
 611                                 Gdk::INTERP_NEAREST
 612                         );
 613                 }
 614
 615                 int index=0;
 616
 617                 if(!onionskin || onion_first_tile || !workarea->tile_book[index].first)
 618                 {
 619                         workarea->tile_book[index].first=pixbuf;
 620                 }
 621                 else
 622                 {
 623                         pixbuf->composite(
 624                                 workarea->tile_book[index].first, // Dest
 625                                 0,//int dest_x
 626                                 0,//int dest_y
 627                                 pixbuf->get_width(), // dest width
 628                                 pixbuf->get_height(), // dest_height,
 629                                 0, // double offset_x
 630                                 0, // double offset_y
 631                                 1, // double scale_x
 632                                 1, // double scale_y
 633                                 Gdk::INTERP_NEAREST, // interp
 634                                 255/(onion_layers-onion_skin_queue.size()+1) //int overall_alpha
 635                         );
 636                 }
 637
 638                 workarea->queue_draw();
 639                 assert(workarea->tile_book[index].first);
 640         }
 641 };
 642
 643
 644
 645
 646 /* === M E T H O D S ======================================================= */
 647
 648
 649 WorkArea::WorkArea(etl::loose_handle<synfigapp::CanvasInterface> canvas_interface):
 650         Gtk::Table(4+RULER_FIX, 3, false),
 651         canvas_interface(canvas_interface),
 652         canvas(canvas_interface->get_canvas()),
 653         scrollx_adjustment(0,-4,4,0.01,0.1),
 654         scrolly_adjustment(0,-4,4,0.01,0.1),
 655         w(TILE_SIZE),
 656         h(TILE_SIZE),
 657         last_event_time(0),
 658         progresscallback(0),
 659         dragging(DRAG_NONE),
 660         show_grid(false),
 661         tile_w(TILE_SIZE),
 662         tile_h(TILE_SIZE),
 663         timecode_width(0),
 664         timecode_height(0)
 665 {
 666         show_guides=true;
 667         curr_input_device=0;
 668         full_frame=false;
 669         allow_duck_clicks=true;
 670         allow_layer_clicks=true;
 671         render_idle_func_id=0;
 672         zoom=prev_zoom=1.0;
 673         quality=10;
 674         low_res_pixel_size=2;
 675         rendering=false;
 676         canceled_=false;
 677         low_resolution=true;
 678         pw=0.001;
 679         ph=0.001;
 680         last_focus_point=Point(0,0);
 681         onion_skin=false;
 682         onion_skins[0]=0;
 683         onion_skins[1]=0;
 684         queued=false;
 685         dirty_trap_enabled=false;
 686         solid_lines=true;
 687
 688         dirty_trap_queued=0;
 689
 690         meta_data_lock=false;
 691
 692         insert_renderer(new Renderer_Canvas,    000);
 693         insert_renderer(new Renderer_Grid,              100);
 694         insert_renderer(new Renderer_Guides,    200);
 695         insert_renderer(new Renderer_Ducks,             300);
 696         insert_renderer(new Renderer_BBox,              399);
 697         insert_renderer(new Renderer_Dragbox,   400);
 698         insert_renderer(new Renderer_Timecode,  500);
 699
 700         signal_duck_selection_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 701         signal_strokes_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 702         signal_grid_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 703         signal_grid_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::save_meta_data));
 704         signal_sketch_saved().connect(sigc::mem_fun(*this,&studio::WorkArea::save_meta_data));
 705
 706         // Not that it really makes a difference... (setting this to zero, that is)
 707         refreshes=0;
 708
 709         drawing_area=manage(new class Gtk::DrawingArea());
 710         drawing_area->show();
 711         drawing_area->set_extension_events(Gdk::EXTENSION_EVENTS_ALL);
 712
 713         drawing_frame=manage(new Gtk::Frame);
 714         drawing_frame->add(*drawing_area);
 715         //drawing_frame->set_shadow_type(Gtk::SHADOW_NONE);
 716         //drawing_frame->property_border_width()=5;
 717         //drawing_frame->modify_fg(Gtk::STATE_NORMAL,Gdk::Color("#00ffff"));
 718         //drawing_frame->modify_base(Gtk::STATE_NORMAL,Gdk::Color("#ff00ff"));
 719         /*drawing_frame->modify_fg(Gtk::STATE_ACTIVE,Gdk::Color("#00ffff"));
 720         drawing_frame->modify_base(Gtk::STATE_ACTIVE,Gdk::Color("#ff00ff"));
 721         drawing_frame->modify_bg(Gtk::STATE_ACTIVE,Gdk::Color("#00ff00"));
 722         drawing_frame->modify_fg(Gtk::STATE_INSENSITIVE,Gdk::Color("#00ffff"));
 723         drawing_frame->modify_base(Gtk::STATE_INSENSITIVE,Gdk::Color("#ff00ff"));
 724         drawing_frame->modify_bg(Gtk::STATE_INSENSITIVE,Gdk::Color("#00ff00"));
 725         drawing_frame->modify_fg(Gtk::STATE_SELECTED,Gdk::Color("#00ffff"));
 726         drawing_frame->modify_base(Gtk::STATE_SELECTED,Gdk::Color("#ff00ff"));
 727         drawing_frame->modify_bg(Gtk::STATE_SELECTED,Gdk::Color("#00ff00"));
 728         */
 729         //drawing_frame->set_state(Gtk::STATE_NORMAL);
 730
 731         drawing_frame->show();
 732
 733         attach(*drawing_frame, 1, 3+RULER_FIX, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 734
 735         Gtk::IconSize iconsize=Gtk::IconSize::from_name("synfig-small_icon");
 736
 737
 738         // Create the vertical and horizontal rulers
 739         vruler = manage(new class Gtk::VRuler());
 740         hruler = manage(new class Gtk::HRuler());
 741         vruler->set_metric(Gtk::PIXELS);
 742         hruler->set_metric(Gtk::PIXELS);
 743         vruler->show();
 744         hruler->show();
 745         attach(*vruler, 0, 1, 1, 2, Gtk::SHRINK|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 746         attach(*hruler, 1, 3+RULER_FIX, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::SHRINK|Gtk::FILL, 0, 0);
 747         hruler->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_hruler_event));
 748         vruler->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_vruler_event));
 749         hruler->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 750         vruler->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 751
 752         // Create the menu button
 753         menubutton=manage(new class Gtk::Button());
 754         Gtk::Arrow *arrow1 = manage(new class Gtk::Arrow(Gtk::ARROW_RIGHT, Gtk::SHADOW_OUT));
 755         menubutton->add(*arrow1);
 756         menubutton->show_all();
 757         menubutton->signal_pressed().connect(sigc::mem_fun(*this, &WorkArea::popup_menu));
 758         attach(*menubutton, 0, 1, 0, 1, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
 759
 760
 761
 762         Gtk::VScrollbar *vscrollbar1 = manage(new class Gtk::VScrollbar(*get_scrolly_adjustment()));
 763         Gtk::HScrollbar *hscrollbar1 = manage(new class Gtk::HScrollbar(*get_scrollx_adjustment()));
 764         vscrollbar1->show();
 765         hscrollbar1->show();
 766         attach(*vscrollbar1, 3+RULER_FIX, 4+RULER_FIX, 1, 2, Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 767         attach(*hscrollbar1, 2+RULER_FIX, 3+RULER_FIX, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::FILL, 0, 0);
 768
 769         ZoomDial *zoomdial=manage(new class ZoomDial(iconsize));
 770         zoomdial->signal_zoom_in().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_in));
 771         zoomdial->signal_zoom_out().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_out));
 772         zoomdial->signal_zoom_fit().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_fit));
 773         zoomdial->signal_zoom_norm().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_norm));
 774         zoomdial->show();
 775         attach(*zoomdial, 0, 2+RULER_FIX, 2, 3, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
 776
 777         drawing_area->add_events(Gdk::KEY_PRESS_MASK | Gdk::KEY_RELEASE_MASK);
 778         add_events(Gdk::KEY_PRESS_MASK);
 779         drawing_area->add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
 780         drawing_area->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::POINTER_MOTION_MASK);
 781
 782         // ----------------- Attach signals
 783
 784         drawing_area->signal_expose_event().connect(sigc::mem_fun(*this, &WorkArea::refresh));
 785         drawing_area->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_drawing_area_event));
 786         drawing_area->signal_size_allocate().connect(sigc::hide(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info)));
 787
 788
 789
 790         canvas_interface->signal_rend_desc_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 791         // When either of the scrolling adjustments change, then redraw.
 792         get_scrollx_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::queue_scroll));
 793         get_scrolly_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::queue_scroll));
 794         get_scrollx_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 795         get_scrolly_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 796
 797         get_canvas()->signal_meta_data_changed("grid_size").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 798         get_canvas()->signal_meta_data_changed("grid_snap").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 799         get_canvas()->signal_meta_data_changed("grid_show").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 800         get_canvas()->signal_meta_data_changed("guide_show").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 801         get_canvas()->signal_meta_data_changed("guide_x").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 802         get_canvas()->signal_meta_data_changed("guide_y").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 803         get_canvas()->signal_meta_data_changed("onion_skin").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 804         get_canvas()->signal_meta_data_changed("guide_snap").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 805         get_canvas()->signal_meta_data_changed("sketch").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 806         get_canvas()->signal_meta_data_changed("solid_lines").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 807
 808         queued=false;
 809         meta_data_lock=false;
 810         set_focus_point(Point(0,0));
 811
 812
 813         load_meta_data();
 814         // Load sketch
 815         {
 816                 String data(canvas->get_meta_data("sketch"));
 817                 if(!data.empty())
 818                 {
 819                         if(!load_sketch(data))
 820                                 load_sketch(dirname(canvas->get_file_name())+ETL_DIRECTORY_SEPARATOR+basename(data));
 821                 }
 822         }
 823
 824         hruler->property_max_size()=double(10.0);
 825         vruler->property_max_size()=double(10.0);
 826
 827         drawing_area->set_flags(drawing_area->get_flags()|Gtk::CAN_FOCUS);
 828 }
 829
 830 WorkArea::~WorkArea()
 831 {
 832 //      delete [] buffer;
 833
 834         // don't leave the render function queued if we are about to vanish;
 835         // that causes crashes
 836         if(render_idle_func_id)
 837                 render_idle_func_id=0;
 838 }
 839
 840 #ifdef SINGLE_THREADED
 841 bool
 842 WorkArea::get_updating()const
 843 {
 844         return App::single_threaded && async_renderer && async_renderer->updating;
 845 }
 846 #endif
 847
 848 #ifdef SINGLE_THREADED
 849 void
 850 WorkArea::stop_updating(bool cancel)
 851 {
 852         async_renderer->stop();
 853         if (cancel) canceled_=true;
 854 }
 855 #endif
 856
 857 void
 858 WorkArea::save_meta_data()
 859 {
 860         if(meta_data_lock)
 861                 return;
 862         meta_data_lock=true;
 863
 864         Vector s(get_grid_size());
 865         canvas_interface->set_meta_data("grid_size",strprintf("%f %f",s[0],s[1]));
 866         canvas_interface->set_meta_data("grid_snap",get_grid_snap()?"1":"0");
 867         canvas_interface->set_meta_data("guide_snap",get_guide_snap()?"1":"0");
 868         canvas_interface->set_meta_data("guide_show",get_show_guides()?"1":"0");
 869         canvas_interface->set_meta_data("grid_show",show_grid?"1":"0");
 870         canvas_interface->set_meta_data("onion_skin",onion_skin?"1":"0");
 871         {
 872                 String data;
 873                 GuideList::const_iterator iter;
 874                 for(iter=get_guide_list_x().begin();iter!=get_guide_list_x().end();++iter)
 875                 {
 876                         if(!data.empty())
 877                                 data+=' ';
 878                         data+=strprintf("%f",*iter);
 879                 }
 880                 if(!data.empty())
 881                         canvas_interface->set_meta_data("guide_x",data);
 882
 883                 data.clear();
 884                 for(iter=get_guide_list_y().begin();iter!=get_guide_list_y().end();++iter)
 885                 {
 886                         if(!data.empty())
 887                                 data+=' ';
 888                         data+=strprintf("%f",*iter);
 889                 }
 890                 if(!data.empty())
 891                         canvas_interface->set_meta_data("guide_y",data);
 892         }
 893
 894         if(get_sketch_filename().size())
 895         {
 896                 if(dirname(canvas->get_file_name())==dirname(get_sketch_filename()))
 897                         canvas_interface->set_meta_data("sketch",basename(get_sketch_filename()));
 898                 else
 899                         canvas_interface->set_meta_data("sketch",get_sketch_filename());
 900         }
 901
 902         meta_data_lock=false;
 903 }
 904
 905 void
 906 WorkArea::load_meta_data()
 907 {
 908         if(meta_data_lock)
 909                 return;
 910         meta_data_lock=true;
 911
 912         String data;
 913
 914         data=canvas->get_meta_data("grid_size");
 915         if(!data.empty())
 916         {
 917                 float gx(get_grid_size()[0]),gy(get_grid_size()[1]);
 918
 919                 String::iterator iter(find(data.begin(),data.end(),' '));
 920                 String tmp(data.begin(),iter);
 921
 922                 if(!tmp.empty())
 923                         gx=stratof(tmp);
 924                 else
 925                         synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 926
 927                 if(iter==data.end())
 928                         tmp.clear();
 929                 else
 930                         tmp=String(iter+1,data.end());
 931
 932                 if(!tmp.empty())
 933                         gy=stratof(tmp);
 934                 else
 935                         synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 936
 937                 set_grid_size(Vector(gx,gy));
 938         }
 939
 940         data=canvas->get_meta_data("grid_show");
 941         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 942                 show_grid=true;
 943         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 944                 show_grid=false;
 945
 946         data=canvas->get_meta_data("solid_lines");
 947         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 948                 solid_lines=true;
 949         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 950                 solid_lines=false;
 951
 952         data=canvas->get_meta_data("guide_show");
 953         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 954                 show_guides=true;
 955         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 956                 show_guides=false;
 957
 958         data=canvas->get_meta_data("grid_snap");
 959         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 960                 set_grid_snap(true);
 961         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 962                 set_grid_snap(false);
 963
 964         data=canvas->get_meta_data("guide_snap");
 965         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 966                 set_guide_snap(true);
 967         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 968                 set_guide_snap(false);
 969
 970         data=canvas->get_meta_data("onion_skin");
 971         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 972                 set_onion_skin(true);
 973         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 974                 set_onion_skin(false);
 975
 976         data=canvas->get_meta_data("guide_x");
 977         get_guide_list_x().clear();
 978         while(!data.empty())
 979         {
 980                 String::iterator iter(find(data.begin(),data.end(),' '));
 981                 String guide(data.begin(),iter);
 982
 983                 if(!guide.empty())
 984                         get_guide_list_x().push_back(stratof(guide));
 985
 986                 if(iter==data.end())
 987                         data.clear();
 988                 else
 989                         data=String(iter+1,data.end());
 990         }
 991         //sort(get_guide_list_x());
 992
 993         data=canvas->get_meta_data("guide_y");
 994         get_guide_list_y().clear();
 995         while(!data.empty())
 996         {
 997                 String::iterator iter(find(data.begin(),data.end(),' '));
 998                 String guide(data.begin(),iter);
 999
1000                 if(!guide.empty())
1001                         get_guide_list_y().push_back(stratof(guide));
1002
1003                 if(iter==data.end())
1004                         data.clear();
1005                 else
1006                         data=String(iter+1,data.end());
1007         }
1008         //sort(get_guide_list_y());
1009
1010         meta_data_lock=false;
1011         queue_draw();
1012 }
1013
1014 void
1015 WorkArea::set_onion_skin(bool x)
1016 {
1017         if(onion_skin==x)
1018                 return;
1019         onion_skin=x;
1020         save_meta_data();
1021         queue_render_preview();
1022         signal_onion_skin_changed()();
1023 }
1024
1025 bool
1026 WorkArea::get_onion_skin()const
1027 {
1028         return onion_skin;
1029 }
1030
1031 void WorkArea::set_onion_skins(int *onions)
1032 {
1033         onion_skins[0]=onions[0];
1034         onion_skins[1]=onions[1];
1035         if(onion_skin)
1036                 queue_render_preview();
1037 }
1038
1039 void
1040 WorkArea::enable_grid()
1041 {
1042         show_grid=true;
1043         save_meta_data();
1044         queue_draw();
1045 }
1046
1047 void
1048 WorkArea::disable_grid()
1049 {
1050         show_grid=false;
1051         save_meta_data();
1052         queue_draw();
1053 }
1054
1055 void
1056 WorkArea::set_show_guides(bool x)
1057 {
1058         show_guides=x;
1059         save_meta_data();
1060         queue_draw();
1061 }
1062
1063 void
1064 WorkArea::toggle_grid()
1065 {
1066         show_grid=!show_grid;
1067         save_meta_data();
1068         queue_draw();
1069 }
1070
1071 void
1072 WorkArea::set_low_resolution_flag(bool x)
1073 {
1074         if(x!=low_resolution)
1075         {
1076                 low_resolution=x;
1077                 queue_render_preview();
1078         }
1079 }
1080
1081 void
1082 WorkArea::toggle_low_resolution_flag()
1083 {
1084         set_low_resolution_flag(!get_low_resolution_flag());
1085 }
1086
1087 void
1088 WorkArea::popup_menu()
1089 {
1090         signal_popup_menu()();
1091 }
1092
1093 void
1094 WorkArea::set_grid_size(const synfig::Vector &s)
1095 {
1096         Duckmatic::set_grid_size(s);
1097         save_meta_data();
1098         queue_draw();
1099 }
1100
1101 void
1102 WorkArea::set_focus_point(const synfig::Point &point)
1103 {
1104         // These next three lines try to ensure that we place the
1105         // focus on a pixel boundary
1106         /*Point adjusted(point[0]/abs(get_pw()),point[1]/abs(get_ph()));
1107         adjusted[0]=(abs(adjusted[0]-floor(adjusted[0]))<0.5)?floor(adjusted[0])*abs(get_pw()):ceil(adjusted[0])*abs(get_ph());
1108         adjusted[1]=(abs(adjusted[1]-floor(adjusted[1]))<0.5)?floor(adjusted[1])*abs(get_ph()):ceil(adjusted[1])*abs(get_ph());
1109         */
1110         const synfig::Point& adjusted(point);
1111
1112         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1113         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1114         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1115
1116         get_scrollx_adjustment()->set_value(adjusted[0]*x_factor);
1117         get_scrolly_adjustment()->set_value(adjusted[1]*y_factor);
1118 }
1119
1120 synfig::Point
1121 WorkArea::get_focus_point()const
1122 {
1123         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1124         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1125         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1126
1127         return synfig::Point(get_scrollx_adjustment()->get_value()*x_factor, get_scrolly_adjustment()->get_value()*y_factor);
1128 }
1129
1130 bool
1131 WorkArea::set_wh(int W, int H,int CHAN)
1132 {
1133         // If our size is already set, don't set it again
1134         if(W==w && H==h && CHAN==bpp)
1135         {
1136                 return true;
1137         }
1138         if(W<=0 || H<=0 || CHAN<=0)
1139                 return false;
1140
1141         assert(W>0);
1142         assert(H>0);
1143         assert(CHAN>0);
1144
1145         // Set all of the parameters
1146         w=W;
1147         h=H;
1148         bpp=CHAN;
1149
1150         refresh_dimension_info();
1151
1152         tile_book.clear();
1153
1154         return true;
1155 }
1156
1157 bool
1158 WorkArea::on_key_press_event(GdkEventKey* event)
1159 {
1160         if(get_selected_ducks().empty())
1161                 return false;
1162
1163         Real multiplier(1.0);
1164
1165         if(Gdk::ModifierType(event->state)&GDK_SHIFT_MASK)
1166                 multiplier=10.0;
1167
1168         Vector nudge;
1169         switch(event->keyval)
1170         {
1171                 case GDK_Left:
1172                         nudge=Vector(-pw,0);
1173                         break;
1174                 case GDK_Right:
1175                         nudge=Vector(pw,0);
1176                         break;
1177                 case GDK_Up:
1178                         nudge=Vector(0,-ph);
1179                         break;
1180                 case GDK_Down:
1181                         nudge=Vector(0,ph);
1182                         break;
1183                 default:
1184                         return false;
1185                         break;
1186         }
1187
1188         synfigapp::Action::PassiveGrouper grouper(instance.get(),_("Nudge"));
1189
1190         // Grid snap does not apply to nudging
1191         bool grid_snap_holder(get_grid_snap());
1192         bool guide_snap_holder(get_guide_snap());
1193         set_grid_snap(false);
1194
1195         try {
1196                 start_duck_drag(get_selected_duck()->get_trans_point());
1197                 translate_selected_ducks(get_selected_duck()->get_trans_point()+nudge*multiplier);
1198                 end_duck_drag();
1199         }
1200         catch(String)
1201         {
1202                 canvas_view->duck_refresh_flag=true;
1203                 canvas_view->queue_rebuild_ducks();
1204         }
1205
1206         set_grid_snap(grid_snap_holder);
1207         set_guide_snap(guide_snap_holder);
1208
1209         return true;
1210 }
1211
1212 bool
1213 WorkArea::on_drawing_area_event(GdkEvent *event)
1214 {
1215         synfig::Point mouse_pos;
1216     float bezier_click_pos;
1217         const float radius((abs(pw)+abs(ph))*4);
1218         int button_pressed(0);
1219         float pressure(0);
1220         bool is_mouse(false);
1221         Gdk::ModifierType modifier(Gdk::ModifierType(0));
1222
1223         // Handle input stuff
1224         if(
1225                 event->any.type==GDK_MOTION_NOTIFY ||
1226                 event->any.type==GDK_BUTTON_PRESS ||
1227                 event->any.type==GDK_2BUTTON_PRESS ||
1228                 event->any.type==GDK_3BUTTON_PRESS ||
1229                 event->any.type==GDK_BUTTON_RELEASE
1230         )
1231         {
1232                 GdkDevice *device;
1233                 if(event->any.type==GDK_MOTION_NOTIFY)
1234                 {
1235                         device=event->motion.device;
1236                         modifier=Gdk::ModifierType(event->motion.state);
1237                 }
1238                 else
1239                 {
1240                         device=event->button.device;
1241                         modifier=Gdk::ModifierType(event->button.state);
1242                         drawing_area->grab_focus();
1243                 }
1244
1245                 // Make sure we recognize the device
1246                 if(curr_input_device)
1247                 {
1248                         if(curr_input_device!=device)
1249                         {
1250                                 assert(device);
1251                                 curr_input_device=device;
1252                                 signal_input_device_changed()(curr_input_device);
1253                         }
1254                 }
1255                 else if(device)
1256                 {
1257                         curr_input_device=device;
1258                         signal_input_device_changed()(curr_input_device);
1259                 }
1260
1261                 assert(curr_input_device);
1262
1263                 // Calculate the position of the
1264                 // input device in canvas coordinates
1265                 // and the buttons
1266                 if(!event->button.axes)
1267                 {
1268                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->button.x,event->button.y)));
1269                         button_pressed=event->button.button;
1270                         pressure=1.0f;
1271                         is_mouse=true;
1272                         if(isnan(event->button.x) || isnan(event->button.y))
1273                                 return false;
1274                 }
1275                 else
1276                 {
1277                         double x(event->button.axes[0]);
1278                         double y(event->button.axes[1]);
1279                         if(isnan(x) || isnan(y))
1280                                 return false;
1281
1282                         pressure=event->button.axes[2];
1283                         //synfig::info("pressure=%f",pressure);
1284                         pressure-=0.04f;
1285                         pressure/=1.0f-0.04f;
1286
1287
1288                         assert(!isnan(pressure));
1289
1290                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)));
1291
1292                         button_pressed=event->button.button;
1293
1294                         if(button_pressed==1 && pressure<0 && (event->any.type!=GDK_BUTTON_RELEASE && event->any.type!=GDK_BUTTON_PRESS))
1295                                 button_pressed=0;
1296                         if(pressure<0)
1297                                 pressure=0;
1298
1299                         //if(event->any.type==GDK_BUTTON_PRESS && button_pressed)
1300                         //      synfig::info("Button pressed on input device = %d",event->button.button);
1301
1302                         //if(event->button.axes[2]>0.1)
1303                         //      button_pressed=1;
1304                         //else
1305                         //      button_pressed=0;
1306                 }
1307         }
1308         // GDK mouse scrolling events
1309         else if(event->any.type==GDK_SCROLL)
1310         {
1311                 // GDK information needed to properly interpret mouse
1312                 // scrolling events are: scroll.state, scroll.x/scroll.y, and
1313                 // scroll.direction. The value of scroll.direction will be
1314                 // obtained later.
1315
1316                 modifier=Gdk::ModifierType(event->scroll.state);
1317                 mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->scroll.x,event->scroll.y)));
1318         }
1319
1320         // Handle the renderables
1321         {
1322                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
1323                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
1324                 {
1325                         if((*iter)->get_enabled())
1326                                 if((*iter)->event_vfunc(event))
1327                                 {
1328                                         // Event handled. Return true.
1329                                         return true;
1330                                 }
1331                 }
1332         }
1333
1334         // Event hasn't been handled, pass it down
1335         switch(event->type)
1336     {
1337         case GDK_BUTTON_PRESS:
1338                 {
1339                 switch(button_pressed)
1340                 {
1341                 case 1: // Attempt to click on a duck
1342                 {
1343                         etl::handle<Duck> duck;
1344                         dragging=DRAG_NONE;
1345
1346                         if(allow_duck_clicks)
1347                         {
1348                                 duck=find_duck(mouse_pos,radius);
1349
1350                                 if(duck)
1351                                 {
1352                                         // make a note of whether the duck we click on was selected or not
1353                                         if(duck_is_selected(duck))
1354                                                 clicked_duck=duck;
1355                                         else
1356                                         {
1357                                                 clicked_duck=0;
1358                                                 // if CTRL isn't pressed, clicking an unselected duck will unselect all other ducks
1359                                                 if(!(modifier&GDK_CONTROL_MASK))
1360                                                         clear_selected_ducks();
1361                                                 select_duck(duck);
1362                                         }
1363                                 }
1364                         }
1365                         //else
1366                         //      clear_selected_ducks();
1367
1368
1369
1370                         selected_bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1371                         if(duck)
1372                         {
1373                                 if (!duck->get_editable())
1374                                         return true;
1375
1376                                 //get_selected_duck()->signal_user_click(0)();
1377                                 //if(clicked_duck)clicked_duck->signal_user_click(0)();
1378
1379                                 // if the user is holding shift while clicking on a tangent duck, consider splitting the tangent
1380                                 if (event->motion.state&GDK_SHIFT_MASK && duck->get_type() == Duck::TYPE_TANGENT)
1381                                 {
1382                                         synfigapp::ValueDesc value_desc = duck->get_value_desc();
1383
1384                                         // we have the tangent, but need the vertex - that's the parent
1385                                         if (value_desc.parent_is_value_node()) {
1386                                                 ValueNode_Composite::Handle parent_value_node = value_desc.get_parent_value_node();
1387
1388                                                 // if the tangent isn't split, then split it
1389                                                 if (!((*(parent_value_node->get_link("split")))(get_time()).get(bool())))
1390                                                 {
1391                                                         if (get_canvas_view()->canvas_interface()->
1392                                                                 change_value(synfigapp::ValueDesc(parent_value_node,
1393                                                                                                                                   parent_value_node->get_link_index_from_name("split")),
1394                                                                                          true))
1395                                                         {
1396                                                                 // rebuild the ducks from scratch, so the tangents ducks aren't connected
1397                                                                 get_canvas_view()->rebuild_ducks();
1398
1399                                                                 // reprocess the mouse click
1400                                                                 return on_drawing_area_event(event);
1401                                                         }
1402                                                         else
1403                                                                 return true;
1404                                                 }
1405                                         } else {
1406                                                 // I don't know how to access the vertex from the tangent duck when originally drawing the bline in the bline tool
1407
1408                                                 // synfig::ValueNode::Handle vn = value_desc.get_value_node();
1409                                                 synfig::info("parent isn't value node?  shift-drag-tangent doesn't work in bline tool yet...");
1410                                         }
1411                                 }
1412
1413                                 dragging=DRAG_DUCK;
1414                                 drag_point=mouse_pos;
1415                                 //drawing_area->queue_draw();
1416                                 start_duck_drag(mouse_pos);
1417                                 get_canvas_view()->reset_cancel_status();
1418                                 return true;
1419                         }
1420 // I commented out this section because
1421 // it was causing issues when rotoscoping.
1422 // At the moment, we don't need it, so
1423 // this was the easiest way to fix the problem.
1424 /*
1425                         else
1426                         if(selected_bezier)
1427                         {
1428                                 selected_duck=0;
1429                                 selected_bezier->signal_user_click(0)(bezier_click_pos);
1430                         }
1431 */
1432                         else
1433                         {
1434                                 //clear_selected_ducks();
1435                                 selected_bezier=0;
1436                                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_LEFT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1437                                 {
1438                                         // Check for a guide click
1439                                         GuideList::iterator iter;
1440
1441                                         iter=find_guide_x(mouse_pos,radius);
1442                                         if(iter==get_guide_list_x().end())
1443                                         {
1444                                                 curr_guide_is_x=false;
1445                                                 iter=find_guide_y(mouse_pos,radius);
1446                                         }
1447                                         else
1448                                                 curr_guide_is_x=true;
1449                                         if(iter!=get_guide_list_x().end() && iter!=get_guide_list_y().end())
1450                                         {
1451                                                 dragging=DRAG_GUIDE;
1452                                                 curr_guide=iter;
1453                                                 return true;
1454                                         }
1455
1456
1457                                         // All else fails, try making a selection box
1458                                         dragging=DRAG_BOX;
1459                                         curr_point=drag_point=mouse_pos;
1460                                         return true;
1461                                 }
1462                         }
1463                         break;
1464                 }
1465                 case 2: // Attempt to drag and move the window
1466                 {
1467                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1468                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1469                         if(duck)
1470                                 duck->signal_user_click(1)();
1471                         else
1472                         if(bezier)
1473                                 bezier->signal_user_click(1)(bezier_click_pos);
1474
1475                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_MIDDLE,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1476                         if(is_mouse)
1477                         {
1478                                 dragging=DRAG_WINDOW;
1479                                 drag_point=mouse_pos;
1480                                 signal_user_click(1)(mouse_pos);
1481                         }
1482                         break;
1483                 }
1484                 case 3: // Attempt to either get info on a duck, or open the menu
1485                 {
1486                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1487                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1488
1489                         Layer::Handle layer(get_canvas()->find_layer(mouse_pos));
1490                         if(duck)
1491                         {
1492                                 if(get_selected_ducks().size()<=1)
1493                                         duck->signal_user_click(2)();
1494                                 else
1495                                         canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MULTIPLE_DUCKS_CLICKED,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1496                                 return true;
1497                         }
1498                         else if(bezier)
1499                         {
1500                                 bezier->signal_user_click(2)(bezier_click_pos);
1501                                 return true;
1502                         }
1503                         else if (layer)
1504                         {
1505                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_RIGHT,mouse_pos))==Smach::RESULT_OK)
1506                                         return false;
1507                                 return true;
1508                         }
1509                         else
1510                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1511                         /*
1512                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1513                         {
1514                                 //popup_menu();
1515                                 return true;
1516                         }
1517                         */
1518                         break;
1519                 }
1520                 case 4:
1521                         signal_user_click(3)(mouse_pos);
1522                         break;
1523                 case 5:
1524                         signal_user_click(4)(mouse_pos);
1525                         break;
1526                 default:
1527                         break;
1528                 }
1529                 }
1530                 break;
1531         case GDK_MOTION_NOTIFY:
1532                 curr_point=mouse_pos;
1533
1534                 if(event->motion.time-last_event_time<25)
1535                         return true;
1536                 else
1537                         last_event_time=event->motion.time;
1538
1539                 signal_cursor_moved_();
1540
1541                 // Guide/Duck highlights on hover
1542                 if(dragging==DRAG_NONE)
1543                 {
1544                         GuideList::iterator iter;
1545
1546                         iter=find_guide_x(mouse_pos,radius);
1547                         if(iter==get_guide_list_x().end())
1548                                 iter=find_guide_y(mouse_pos,radius);
1549
1550                         if(iter!=curr_guide)
1551                         {
1552                                 curr_guide=iter;
1553                                 drawing_area->queue_draw();
1554                         }
1555
1556                         etl::handle<Duck> duck;
1557                         duck=find_duck(mouse_pos,radius);
1558                         if(duck!=hover_duck)
1559                         {
1560                                 hover_duck=duck;
1561                                 drawing_area->queue_draw();
1562                         }
1563                 }
1564
1565
1566                 if(dragging==DRAG_DUCK)
1567                 {
1568                         if(canvas_view->get_cancel_status())
1569                         {
1570                                 dragging=DRAG_NONE;
1571                                 canvas_view->queue_rebuild_ducks();
1572                                 return true;
1573                         }
1574                         /*
1575                         Point point((mouse_pos-selected_duck->get_origin())/selected_duck->get_scalar());
1576                         if(get_grid_snap())
1577                         {
1578                                 point[0]=floor(point[0]/grid_size[0]+0.5)*grid_size[0];
1579                                 point[1]=floor(point[1]/grid_size[1]+0.5)*grid_size[1];
1580                         }
1581                         selected_duck->set_point(point);
1582                         */
1583
1584                         //Point p(mouse_pos);
1585
1586                         set_axis_lock(event->motion.state&GDK_SHIFT_MASK);
1587
1588                         translate_selected_ducks(mouse_pos);
1589
1590                         drawing_area->queue_draw();
1591                 }
1592
1593                 if(dragging==DRAG_BOX)
1594                 {
1595                         curr_point=mouse_pos;
1596                         drawing_area->queue_draw();
1597                 }
1598
1599                 if(dragging==DRAG_GUIDE)
1600                 {
1601                         if(curr_guide_is_x)
1602                                 *curr_guide=mouse_pos[0];
1603                         else
1604                                 *curr_guide=mouse_pos[1];
1605                         drawing_area->queue_draw();
1606                 }
1607
1608                 if(dragging!=DRAG_WINDOW)
1609                 {       // Update those triangle things on the rulers
1610                         const synfig::Point point(mouse_pos);
1611                         hruler->property_position()=Distance(point[0],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1612                         vruler->property_position()=Distance(point[1],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1613                 }
1614
1615                 if(dragging == DRAG_WINDOW)
1616                         set_focus_point(get_focus_point() + mouse_pos-drag_point);
1617                 else if (event->motion.state & GDK_BUTTON1_MASK &&
1618                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_LEFT,
1619                                                                                                                                   mouse_pos,pressure,modifier)) == Smach::RESULT_ACCEPT)
1620                         return true;
1621                 else if (event->motion.state & GDK_BUTTON2_MASK &&
1622                                  canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_MIDDLE,
1623                                                                                                                                    mouse_pos, pressure, modifier)) == Smach::RESULT_ACCEPT)
1624                         return true;
1625                 else if (event->motion.state & GDK_BUTTON3_MASK &&
1626                                  canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_RIGHT,
1627                                                                                                                                    mouse_pos, pressure, modifier)) == Smach::RESULT_ACCEPT)
1628                         return true;
1629                 else if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_MOTION, BUTTON_NONE,
1630                                                                                                                                   mouse_pos, pressure,modifier)) == Smach::RESULT_ACCEPT)
1631                         return true;
1632
1633                 break;
1634
1635         case GDK_BUTTON_RELEASE:
1636         {
1637                 bool ret(false);
1638
1639                 if(dragging==DRAG_GUIDE)
1640                 {
1641                         dragging=DRAG_NONE;
1642                         save_meta_data();
1643                         return true;
1644                 }
1645                 else
1646                 if(dragging==DRAG_DUCK)
1647                 {
1648                         synfigapp::Action::PassiveGrouper grouper(instance.get(),_("Move"));
1649                         dragging=DRAG_NONE;
1650                         //translate_selected_ducks(mouse_pos);
1651                         set_axis_lock(false);
1652
1653                         try{
1654                         get_canvas_view()->duck_refresh_flag=false;
1655                         get_canvas_view()->duck_refresh_needed=false;
1656                         const bool drag_did_anything(end_duck_drag());
1657                         get_canvas_view()->duck_refresh_flag=true;
1658                         if(!drag_did_anything)
1659                         {
1660                                 // if we originally clicked on a selected duck ...
1661                                 if(clicked_duck)
1662                                 {
1663                                         // ... and CTRL is pressed, then just toggle the clicked duck
1664                                         //     otherwise make the clicked duck the only selected duck
1665                                         if(modifier&GDK_CONTROL_MASK)
1666                                                 unselect_duck(clicked_duck);
1667                                         else
1668                                         {
1669                                                 clear_selected_ducks();
1670                                                 select_duck(clicked_duck);
1671                                         }
1672                                         clicked_duck->signal_user_click(0)();
1673                                 }
1674                         }
1675                         else
1676                         {
1677                                 if(canvas_view->duck_refresh_needed)
1678                                         canvas_view->queue_rebuild_ducks();
1679                                 return true;
1680                         }
1681                         }catch(String)
1682                         {
1683                                 canvas_view->duck_refresh_flag=true;
1684                                 canvas_view->queue_rebuild_ducks();
1685                                 return true;
1686                         }
1687                         //queue_draw();
1688                         clicked_duck=0;
1689
1690                         ret=true;
1691                 }
1692
1693                 if(dragging==DRAG_BOX)
1694                 {
1695                         dragging=DRAG_NONE;
1696                         if((drag_point-mouse_pos).mag()>radius/2.0f)
1697                         {
1698                                 if(canvas_view->get_smach().process_event(EventBox(drag_point,mouse_pos,MouseButton(event->button.button),modifier))==Smach::RESULT_ACCEPT)
1699                                         return true;
1700
1701                                 // when dragging a box around some ducks:
1702                                 // SHIFT selects; CTRL toggles; SHIFT+CTRL unselects; <none> clears all then selects
1703                                 if(modifier&GDK_SHIFT_MASK)
1704                                         select_ducks_in_box(drag_point,mouse_pos);
1705
1706                                 if(modifier&GDK_CONTROL_MASK)
1707                                         toggle_select_ducks_in_box(drag_point,mouse_pos);
1708                                 else if(!(modifier&GDK_SHIFT_MASK))
1709                                 {
1710                                         clear_selected_ducks();
1711                                         select_ducks_in_box(drag_point,mouse_pos);
1712                                 }
1713                                 ret=true;
1714                         }
1715                         else
1716                         {
1717                                 if(allow_layer_clicks)
1718                                 {
1719                                         Layer::Handle layer(get_canvas()->find_layer(drag_point));
1720                                         //if(layer)
1721                                         {
1722                                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_LEFT,mouse_pos,modifier))==Smach::RESULT_OK)
1723                                                         signal_layer_selected_(layer);
1724                                                 ret=true;
1725                                         }
1726                                 }
1727                                 else
1728                                 {
1729                                         signal_user_click(0)(mouse_pos);
1730                                 }
1731                         }
1732                 }
1733
1734                 dragging=DRAG_NONE;
1735
1736                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_UP,MouseButton(event->button.button),mouse_pos,pressure,modifier))==Smach::RESULT_ACCEPT)
1737                         ret=true;
1738
1739                 return ret;
1740         }
1741                 break;
1742         case GDK_SCROLL:
1743         {
1744                 // Handle a mouse scrolling event like Xara Xtreme and
1745                 // Inkscape:
1746
1747                 // Scroll up/down: scroll up/down
1748                 // Shift + scroll up/down: scroll left/right
1749                 // Control + scroll up/down: zoom in/out
1750
1751                 if(modifier&GDK_CONTROL_MASK)
1752                 {
1753
1754                         // The zoom is performed while preserving the pointer
1755                         // position as a fixed point (similarly to Xara Xtreme and
1756                         // Inkscape).
1757
1758                         // The strategy used below is to scroll to the updated
1759                         // position, then zoom. This is easy to implement within
1760                         // the present architecture, but has the disadvantage of
1761                         // triggering multiple visible refreshes. Note: 1.25 is
1762                         // the hard wired ratio in zoom_in()/zoom_out(). The
1763                         // variable "drift" compensates additional inaccuracies in
1764                         // the zoom. There is also an additional minus sign for
1765                         // the inverted y coordinates.
1766
1767                         // FIXME: One might want to figure out where in the code
1768                         // this empirical drift is been introduced.
1769
1770                         const synfig::Point scroll_point(get_scrollx_adjustment()->get_value(),get_scrolly_adjustment()->get_value());
1771                         const double drift = 0.052;
1772
1773                         switch(event->scroll.direction)
1774                         {
1775                                 case GDK_SCROLL_UP:
1776                                 case GDK_SCROLL_RIGHT:
1777                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1.25-(1+drift)));
1778                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1.25-(1+drift)));
1779                                         zoom_in();
1780                                         break;
1781                                 case GDK_SCROLL_DOWN:
1782                                 case GDK_SCROLL_LEFT:
1783                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1/1.25-(1+drift)));
1784                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1/1.25-(1+drift)));
1785                                         zoom_out();
1786                                         break;
1787                                 default:
1788                                         break;
1789                         }
1790                 }
1791                 else if(modifier&GDK_SHIFT_MASK)
1792                 {
1793                         // Scroll in either direction by 20 pixels. Ideally, the
1794                         // amount of pixels per scrolling event should be
1795                         // configurable. Xara Xtreme currently uses an (hard
1796                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1797
1798                         const int scroll_pixel = 20;
1799
1800                         switch(event->scroll.direction)
1801                         {
1802                                 case GDK_SCROLL_UP:
1803                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1804                                         break;
1805                                 case GDK_SCROLL_DOWN:
1806                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1807                                         break;
1808                                 case GDK_SCROLL_LEFT:
1809                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1810                                         break;
1811                                 case GDK_SCROLL_RIGHT:
1812                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1813                                         break;
1814                                 default:
1815                                         break;
1816                         }
1817                 }
1818                 else
1819                 {
1820                         // Scroll in either direction by 20 pixels. Ideally, the
1821                         // amount of pixels per scrolling event should be
1822                         // configurable. Xara Xtreme currently uses an (hard
1823                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1824
1825                         const int scroll_pixel = 20;
1826
1827                         switch(event->scroll.direction)
1828                         {
1829                                 case GDK_SCROLL_UP:
1830                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1831                                         break;
1832                                 case GDK_SCROLL_DOWN:
1833                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1834                                         break;
1835                                 case GDK_SCROLL_LEFT:
1836                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1837                                         break;
1838                                 case GDK_SCROLL_RIGHT:
1839                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1840                                         break;
1841                                 default:
1842                                         break;
1843                         }
1844                 }
1845         }
1846                 break;
1847         default:
1848                 break;
1849         }
1850                 return false;
1851 }
1852
1853 bool
1854 WorkArea::on_hruler_event(GdkEvent */*event*/)
1855 {
1856 /*
1857         switch(event->type)
1858     {
1859         case GDK_BUTTON_PRESS:
1860                 if(dragging==DRAG_NONE)
1861                 {
1862                         dragging=DRAG_GUIDE;
1863                         curr_guide=get_guide_list_y().insert(get_guide_list_y().begin());
1864                         curr_guide_is_x=false;
1865                 }
1866                 return true;
1867                 break;
1868
1869         case GDK_MOTION_NOTIFY:
1870                 // Guide movement
1871                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1872                 {
1873                         double y,x;
1874                         if(event->button.axes)
1875                         {
1876                                 x=(event->button.axes[0]);
1877                                 y=(event->button.axes[1]);
1878                         }
1879                         else
1880                         {
1881                                 x=event->button.x;
1882                                 y=event->button.y;
1883                         }
1884
1885                         if(isnan(y) || isnan(x))
1886                                 return false;
1887
1888                         *curr_guide=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)))[1];
1889
1890                         queue_draw();
1891                 }
1892                 return true;
1893                 break;
1894
1895         case GDK_BUTTON_RELEASE:
1896                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1897                 {
1898                         dragging=DRAG_NONE;
1899                         get_guide_list_y().erase(curr_guide);
1900                 }
1901                 break;
1902                 return true;
1903         default:
1904                 break;
1905         }
1906 */
1907         return false;
1908 }
1909
1910 bool
1911 WorkArea::on_vruler_event(GdkEvent */*event*/)
1912 {
1913 /*
1914         switch(event->type)
1915     {
1916         case GDK_BUTTON_PRESS:
1917                 if(dragging==DRAG_NONE)
1918                 {
1919                         dragging=DRAG_GUIDE;
1920                         curr_guide=get_guide_list_x().insert(get_guide_list_x().begin());
1921                         curr_guide_is_x=true;
1922                 }
1923                 return true;
1924                 break;
1925         case GDK_BUTTON_RELEASE:
1926                 if(dragging==DRAG_GUIDE && curr_guide_is_x==true)
1927                 {
1928                         dragging=DRAG_NONE;
1929                         get_guide_list_x().erase(curr_guide);
1930                 }
1931                 break;
1932                 return true;
1933         default:
1934                 break;
1935         }
1936 */
1937         return false;
1938 }
1939
1940
1941 void
1942 WorkArea::refresh_dimension_info()
1943 {
1944         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1945
1946         canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1947         canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1948
1949         pw=canvaswidth/w;
1950         ph=canvasheight/h;
1951
1952         scrollx_adjustment.set_page_increment(abs(get_grid_size()[0]));
1953         scrollx_adjustment.set_step_increment(abs(pw));
1954         scrollx_adjustment.set_lower(-abs(canvaswidth));
1955         scrollx_adjustment.set_upper(abs(canvaswidth));
1956         scrolly_adjustment.set_lower(-abs(canvasheight));
1957         scrolly_adjustment.set_upper(abs(canvasheight));
1958         scrolly_adjustment.set_step_increment(abs(ph));
1959         scrolly_adjustment.set_page_increment(abs(get_grid_size()[1]));
1960
1961
1962
1963         if(drawing_area->get_width()<=0 || drawing_area->get_height()<=0 || w==0 || h==0)
1964                 return;
1965
1966         const synfig::Point focus_point(get_focus_point());
1967         const synfig::Real x(focus_point[0]/pw+drawing_area->get_width()/2-w/2);
1968         const synfig::Real y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
1969
1970         window_tl[0]=rend_desc.get_tl()[0]-pw*x;
1971         window_br[0]=rend_desc.get_br()[0]+pw*(drawing_area->get_width()-x-w);
1972
1973         window_tl[1]=rend_desc.get_tl()[1]-ph*y;
1974         window_br[1]=rend_desc.get_br()[1]+ph*(drawing_area->get_height()-y-h);
1975
1976         hruler->property_lower()=Distance(window_tl[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1977         hruler->property_upper()=Distance(window_br[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1978         vruler->property_lower()=Distance(window_tl[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1979         vruler->property_upper()=Distance(window_br[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1980
1981         view_window_changed();
1982 }
1983
1984
1985 synfig::Point
1986 WorkArea::screen_to_comp_coords(synfig::Point pos)const
1987 {
1988         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1989         //synfig::Vector::value_type canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1990         //synfig::Vector::value_type canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1991         //synfig::Vector::value_type pw=canvaswidth/w;
1992         //synfig::Vector::value_type ph=canvasheight/h;
1993         Vector focus_point=get_focus_point();
1994         synfig::Vector::value_type x=focus_point[0]/pw+drawing_area->get_width()/2-w/2;
1995         synfig::Vector::value_type y=focus_point[1]/ph+drawing_area->get_height()/2-h/2;
1996
1997         return rend_desc.get_tl()-synfig::Point(pw*x,ph*y)+synfig::Point(pw*pos[0],ph*pos[1]);
1998 }
1999
2000 synfig::Point
2001 WorkArea::comp_to_screen_coords(synfig::Point /*pos*/)const
2002 {
2003         synfig::warning("WorkArea::comp_to_screen_coords: Not yet implemented");
2004         return synfig::Point();
2005 }
2006
2007 int
2008 WorkArea::next_unrendered_tile(int refreshes)const
2009 {
2010         //assert(!tile_book.empty());
2011         if(tile_book.empty())
2012                 return -1;
2013
2014         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2015
2016         const synfig::Vector focus_point(get_focus_point());
2017
2018         // Calculate the window coordinates of the top-left
2019         // corner of the canvas.
2020         const synfig::Vector::value_type
2021                 x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2022                 y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2023
2024         int div = low_res_pixel_size;
2025         const int width_in_tiles(w/tile_w+((low_resolution?((w/div)%(tile_w/div)):(w%tile_w))?1:0));
2026         const int height_in_tiles(h/tile_h+(h%tile_h?1:0));
2027
2028         int
2029                 u(0),v(0),
2030                 u1(int(-x/tile_w)),
2031                 v1(int(-y/tile_h)),
2032                 u2(int((-x+drawing_area->get_width())/tile_w+1)),
2033                 v2(int((-y+drawing_area->get_height())/tile_h+1));
2034
2035         if(u2>width_in_tiles)u2=width_in_tiles;
2036         if(v2>height_in_tiles)v2=height_in_tiles;
2037         if(u1<0)u1=0;
2038         if(v1<0)v1=0;
2039
2040         int last_good_tile(-1);
2041
2042         for(v=v1;v<v2;v++)
2043                 for(u=u1;u<u2;u++)
2044                 {
2045                         int index(v*width_in_tiles+u);
2046                         if(tile_book[index].second<refreshes)
2047                         {
2048                                 last_good_tile=index;
2049                                 if(rand()%8==0)
2050                                         return index;
2051                         }
2052                 }
2053         return last_good_tile;
2054 }
2055
2056 /*
2057 template <typename F, typename T=WorkAreaRenderer, typename R=typename F::result_type>
2058 class handle2ptr_t : public std::unary_function<typename etl::handle<T>,R>
2059 {
2060 private:
2061         F func;
2062 public:
2063         handle2ptr_t(const F &func):func(func) { };
2064
2065         R operator()(typename etl::handle<T> x) { return func(*x); }
2066 };
2067
2068 template <typename F>
2069 handle2ptr_t<F>
2070 handle2ptr(F func)
2071 {
2072         return handle2ptr_t<F>(func);
2073 }
2074         for_each(
2075                 renderer_set_.begin(),
2076                 renderer_set_.end(),
2077                 handle2ptr(
2078                         sigc::bind(
2079                                 sigc::bind(
2080                                         sigc::mem_fun(
2081                                                 &WorkAreaRenderer::render_vfunc
2082                                         ),
2083                                         Gdk::Rectangle(event->area)
2084                                 ),
2085                                 drawing_area->get_window()
2086                         )
2087                 )
2088         );
2089 */
2090
2091 bool
2092 WorkArea::refresh(GdkEventExpose*event)
2093 {
2094         assert(get_canvas());
2095
2096         drawing_area->get_window()->clear();
2097
2098         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2099
2100         const synfig::Vector focus_point(get_focus_point());
2101
2102         // Update the old focus point
2103         last_focus_point=focus_point;
2104
2105         // Draw out the renderables
2106         {
2107                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
2108                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
2109                 {
2110                         if((*iter)->get_enabled())
2111                                 (*iter)->render_vfunc(
2112                                         drawing_area->get_window(),
2113                                         Gdk::Rectangle(&event->area)
2114                                 );
2115                 }
2116         }
2117
2118         // Calculate the window coordinates of the top-left
2119         // corner of the canvas.
2120         //const synfig::Vector::value_type
2121         //      x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2122         //      y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2123
2124         //const synfig::Vector::value_type window_startx(window_tl[0]);
2125         //const synfig::Vector::value_type window_endx(window_br[0]);
2126         //const synfig::Vector::value_type window_starty(window_tl[1]);
2127         //const synfig::Vector::value_type window_endy(window_br[1]);
2128
2129         Glib::RefPtr<Gdk::GC> gc=Gdk::GC::create(drawing_area->get_window());
2130
2131         // If we are in animate mode, draw a red border around the screen
2132         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2133         {
2134 // #define USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2135 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2136                 // This method of drawing the red border doesn't work on any
2137                 // Gtk theme which uses the crux-engine, hcengine, industrial,
2138                 // mist, or ubuntulooks engine, such as the default ubuntu
2139                 // 'Human' theme.
2140                 drawing_frame->modify_bg(Gtk::STATE_NORMAL,Gdk::Color("#FF0000"));
2141 #else
2142                 // So let's do it in a more primitive fashion.
2143                 gc->set_rgb_fg_color(Gdk::Color("#FF0000"));
2144                 gc->set_line_attributes(1,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
2145                 drawing_area->get_window()->draw_rectangle(
2146                         gc,
2147                         false,  // Fill?
2148                         0,0,    // x,y
2149                         drawing_area->get_width()-1,drawing_area->get_height()-1); // w,h
2150 #endif
2151         }
2152 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2153         else
2154                 drawing_frame->unset_bg(Gtk::STATE_NORMAL);
2155 #endif
2156
2157         return true;
2158 }
2159
2160 void
2161 WorkArea::done_rendering()
2162 {
2163 /*
2164         assert(buffer);
2165         assert(w>0);
2166         assert(h>0);
2167         pix_buf=Gdk::Pixbuf::create_from_data(
2168                 buffer, // pointer to the data
2169                 Gdk::COLORSPACE_RGB, // the colorspace
2170                 true, // has alpha?
2171                 8, // bits per sample
2172                 w,      // width
2173                 h,      // height
2174                 w*bpp); // stride (pitch)
2175         assert(pix_buf);
2176 */
2177 }
2178
2179
2180 void
2181 WorkArea::set_quality(int x)
2182 {
2183         if(x==quality)
2184                 return;
2185         quality=x;
2186         queue_render_preview();
2187 }
2188
2189 void
2190 WorkArea::set_low_res_pixel_size(int x)
2191 {
2192         if(x==low_res_pixel_size)
2193                 return;
2194         low_res_pixel_size=x;
2195         queue_render_preview();
2196 }
2197
2198 namespace studio
2199 {
2200 class WorkAreaProgress : public synfig::ProgressCallback
2201 {
2202         WorkArea *work_area;
2203         ProgressCallback *cb;
2204
2205 public:
2206
2207         WorkAreaProgress(WorkArea *work_area,ProgressCallback *cb):
2208                 work_area(work_area),cb(cb)
2209         {
2210                 assert(cb);
2211         }
2212
2213         virtual bool
2214         task(const std::string &str)
2215         {
2216                 if(work_area->dirty)
2217                         return false;
2218                 return cb->task(str);
2219         }
2220
2221         virtual bool
2222         error(const std::string &err)
2223         {
2224                 if(work_area->dirty)
2225                         return false;
2226                 return cb->error(err);
2227         }
2228
2229         virtual bool
2230         amount_complete(int current, int total)
2231         {
2232                 if(work_area->dirty)
2233                         return false;
2234                 return cb->amount_complete(current,total);
2235         }
2236 };
2237 }
2238
2239 bool
2240 studio::WorkArea::async_update_preview()
2241 {
2242 #ifdef SINGLE_THREADED
2243         if (get_updating())
2244         {
2245                 stop_updating();
2246                 queue_render_preview();
2247                 return false;
2248         }
2249 #endif
2250
2251         async_renderer=0;
2252
2253         queued=false;
2254         canceled_=false;
2255         get_canvas_view()->reset_cancel_status();
2256
2257         // This object will mark us as busy until
2258         // we are done.
2259         //studio::App::Busy busy;
2260
2261         //WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2262         //synfig::ProgressCallback *cb=&callback;
2263
2264         if(!is_visible())return false;
2265
2266         /*
2267         // If we are queued to render the scene at the next idle
2268         // go ahead and de-queue it.
2269         if(render_idle_func_id)
2270         {
2271                 g_source_remove(render_idle_func_id);
2272                 //queued=false;
2273                 render_idle_func_id=0;
2274         }
2275         */
2276
2277         dirty=false;
2278         get_canvas_view()->reset_cancel_status();
2279
2280         //bool ret=false;
2281         RendDesc desc=get_canvas()->rend_desc();
2282
2283         int w=(int)(desc.get_w()*zoom);
2284         int h=(int)(desc.get_h()*zoom);
2285
2286         // ensure that the size we draw is at least one pixel in each dimension
2287         int min_size = low_resolution ? low_res_pixel_size : 1;
2288         if (w < min_size) w = min_size;
2289         if (h < min_size) h = min_size;
2290
2291         // Setup the description parameters
2292         desc.set_antialias(1);
2293         desc.set_time(cur_time);
2294
2295         set_rend_desc(desc);
2296
2297         // Create the render target
2298         handle<Target> target;
2299
2300         // if we have lots of pixels to render and the tile renderer isn't disabled, use it
2301         int div;
2302         div = low_resolution ? low_res_pixel_size : 1;
2303         if ((w*h > 240*div*135*div && !getenv("SYNFIG_DISABLE_TILE_RENDER")) || getenv("SYNFIG_FORCE_TILE_RENDER"))
2304         {
2305                 // do a tile render
2306                 handle<WorkAreaTarget> trgt(new class WorkAreaTarget(this,w,h));
2307
2308                 trgt->set_rend_desc(&desc);
2309                 trgt->set_onion_skin(get_onion_skin(), onion_skins);
2310                 target=trgt;
2311         }
2312         else
2313         {
2314                 // do a scanline render
2315                 handle<WorkAreaTarget_Full> trgt(new class WorkAreaTarget_Full(this,w,h));
2316
2317                 trgt->set_rend_desc(&desc);
2318                 trgt->set_onion_skin(get_onion_skin(), onion_skins);
2319                 target=trgt;
2320         }
2321
2322         // We can rest assured that our time has already
2323         // been set, so there is no need to have to
2324         // recalculate that over again.
2325         // UPDATE: This is kind of needless with
2326         // the way that time is handled now in SYNFIG.
2327         //target->set_avoid_time_sync(true);
2328         async_renderer=new AsyncRenderer(target);
2329         async_renderer->signal_finished().connect(
2330                 sigc::mem_fun(this,&WorkArea::async_update_finished)
2331         );
2332
2333         rendering=true;
2334         async_renderer->start();
2335
2336         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2337
2338         rendering=true;
2339         cb->task(_("Rendering..."));
2340         rendering=true;
2341
2342         return true;
2343 }
2344
2345 void
2346 studio::WorkArea::async_update_finished()
2347 {
2348         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2349
2350         rendering=false;
2351
2352         if(!async_renderer)
2353                 return;
2354
2355         // If we completed successfully, then
2356         // we aren't dirty anymore
2357         if(async_renderer->has_success())
2358         {
2359                 dirty=false;
2360                 //queued=false;
2361                 cb->task(_("Idle"));
2362         }
2363         else
2364         {
2365                 dirty=true;
2366                 cb->task(_("Render Failed"));
2367         }
2368         //get_canvas_view()->reset_cancel_status();
2369         done_rendering();
2370 }
2371
2372 bool
2373 studio::WorkArea::sync_update_preview()
2374 {
2375         //      const Time &time(cur_time);
2376
2377         canceled_=false;
2378         get_canvas_view()->reset_cancel_status();
2379
2380         async_renderer=0;
2381
2382 again:
2383         // This object will mark us as busy until
2384         // we are done.
2385         studio::App::Busy busy;
2386
2387         WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2388         synfig::ProgressCallback *cb=&callback;
2389
2390         // We don't want to render if we are already rendering
2391         if(rendering)
2392         {
2393                 dirty=true;
2394                 return false;
2395         }
2396
2397         if(!is_visible())return false;
2398         get_canvas()->set_time(get_time());
2399         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2400         signal_rendering()();
2401
2402         // If we are queued to render the scene at the next idle
2403         // go ahead and de-queue it.
2404         if(render_idle_func_id)
2405         {
2406                 g_source_remove(render_idle_func_id);
2407                 //queued=false;
2408                 render_idle_func_id=0;
2409         }
2410         // Start rendering
2411         rendering=true;
2412
2413         dirty=false;
2414         get_canvas_view()->reset_cancel_status();
2415
2416         RendDesc desc=get_canvas()->rend_desc();
2417         //newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
2418
2419         int w=(int)(desc.get_w()*zoom);
2420         int h=(int)(desc.get_h()*zoom);
2421
2422         // Setup the description parameters
2423         desc.set_antialias(1);
2424         desc.set_time(cur_time);
2425         //desc.set_wh(w,h);
2426
2427         set_rend_desc(desc);
2428
2429         // Create the render target
2430         handle<WorkAreaTarget> target(new class WorkAreaTarget(this,w,h));
2431
2432         target->set_rend_desc(&desc);
2433
2434         // We can rest assured that our time has already
2435         // been set, so there is no need to have to
2436         // recalculate that over again.
2437         target->set_avoid_time_sync(true);
2438
2439         if(cb)
2440                 cb->task(strprintf(_("Rendering canvas %s..."),get_canvas()->get_name().c_str()));
2441
2442         bool ret = target->render(cb);
2443
2444         if(!ret && !get_canvas_view()->get_cancel_status() && dirty)
2445         {
2446                 rendering=false;
2447                 //canceled_=true;
2448                 goto again;
2449         }
2450         if(get_canvas_view()->get_cancel_status())
2451                 canceled_=true;
2452
2453         if(cb)
2454         {
2455                 if(ret)
2456                         cb->task(_("Idle"));
2457                 else
2458                         cb->task(_("Render Failed"));
2459                 cb->amount_complete(0,1);
2460         }
2461
2462         // Refresh the work area to make sure that
2463         // it is being displayed correctly
2464         drawing_area->queue_draw();
2465
2466         // If we completed successfully, then
2467         // we aren't dirty anymore
2468         if(ret)
2469         {
2470                 dirty=false;
2471                 //queued=false;
2472         }
2473         else dirty=true;
2474         rendering=false;
2475         //get_canvas_view()->reset_cancel_status();
2476         done_rendering();
2477         return ret;
2478 }
2479
2480 void
2481 studio::WorkArea::async_render_preview(synfig::Time time)
2482 {
2483         cur_time=time;
2484         //tile_book.clear();
2485
2486         refreshes+=5;
2487         if(!is_visible())return;
2488
2489         get_canvas()->set_time(get_time());
2490         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2491         signal_rendering()();
2492
2493         async_update_preview();
2494 }
2495 void
2496 WorkArea::async_render_preview()
2497 {
2498         return async_render_preview(get_canvas_view()->get_time());
2499 }
2500
2501 bool
2502 studio::WorkArea::sync_render_preview(synfig::Time time)
2503 {
2504         cur_time=time;
2505         //tile_book.clear();
2506         refreshes+=5;
2507         if(!is_visible())return false;
2508         return sync_update_preview();
2509 }
2510
2511 bool
2512 WorkArea::sync_render_preview()
2513 {
2514         return sync_render_preview(get_canvas_view()->get_time());
2515 }
2516
2517 void
2518 WorkArea::sync_render_preview_hook()
2519 {
2520         sync_render_preview(get_canvas_view()->get_time());
2521 }
2522
2523 void
2524 WorkArea::queue_scroll()
2525 {
2526 //      const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2527
2528         const synfig::Point focus_point(get_focus_point());
2529
2530         const synfig::Real
2531                 new_x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2532                 new_y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2533
2534         const synfig::Real
2535                 old_x(last_focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2536                 old_y(last_focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2537
2538         // If the coordinates didn't change, we shouldn't queue a draw
2539         if(old_x==new_x && old_y==new_y)
2540                 return;
2541
2542         const int
2543                 dx(round_to_int(old_x)-round_to_int(new_x)),
2544                 dy(round_to_int(old_y)-round_to_int(new_y));
2545
2546         drawing_area->get_window()->scroll(-dx,-dy);
2547
2548         if (timecode_width && timecode_height)
2549         {
2550                 drawing_area->queue_draw_area(4,       4,    4+timecode_width,    4+timecode_height);
2551                 drawing_area->queue_draw_area(4-dx, 4-dy, 4-dx+timecode_width, 4-dy+timecode_height);
2552         }
2553
2554 #ifndef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2555         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2556         {
2557                 int maxx = drawing_area->get_width()-1;
2558                 int maxy = drawing_area->get_height()-1;
2559
2560                 if (dx > 0)
2561                 {
2562                         drawing_area->queue_draw_area(      0, 0,       1, maxy);
2563                         drawing_area->queue_draw_area(maxx-dx, 0, maxx-dx, maxy);
2564                 }
2565                 else if (dx < 0)
2566                 {
2567                         drawing_area->queue_draw_area(   maxx, 0,    maxx, maxy);
2568                         drawing_area->queue_draw_area(    -dx, 0,     -dx, maxy);
2569                 }
2570                 if (dy > 0)
2571                 {
2572                         drawing_area->queue_draw_area(0,       0, maxx,       1);
2573                         drawing_area->queue_draw_area(0, maxy-dy, maxx, maxy-dy);
2574                 }
2575                 else if (dy < 0)
2576                 {
2577                         drawing_area->queue_draw_area(0,    maxy, maxx,    maxy);
2578                         drawing_area->queue_draw_area(0,     -dy, maxx,     -dy);
2579                 }
2580         }
2581 #endif // USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2582
2583         last_focus_point=focus_point;
2584 }
2585
2586 void
2587 studio::WorkArea::zoom_in()
2588 {
2589         set_zoom(zoom*1.25);
2590 }
2591
2592 void
2593 studio::WorkArea::zoom_out()
2594 {
2595         set_zoom(zoom/1.25);
2596 }
2597
2598 void
2599 studio::WorkArea::zoom_fit()
2600 {
2601         float new_zoom(min(drawing_area->get_width() * zoom / w,
2602                                            drawing_area->get_height() * zoom / h) * 0.995);
2603         if (zoom / new_zoom > 0.995 && new_zoom / zoom > 0.995)
2604         {
2605                 set_zoom(prev_zoom);
2606                 return set_focus_point(previous_focus);
2607         }
2608         previous_focus = get_focus_point();
2609         prev_zoom = zoom;
2610         set_zoom(new_zoom);
2611         set_focus_point(Point(0,0));
2612 }
2613
2614 void
2615 studio::WorkArea::zoom_norm()
2616 {
2617         if (zoom == 1.0) return set_zoom(prev_zoom);
2618         prev_zoom = zoom;
2619         set_zoom(1.0f);
2620 }
2621
2622 gboolean
2623 studio::WorkArea::__render_preview(gpointer data)
2624 {
2625         WorkArea *work_area(static_cast<WorkArea*>(data));
2626
2627         // there's no point anyone trying to cancel the timer now - it's gone off already
2628         work_area->render_idle_func_id = 0;
2629
2630         work_area->queued=false;
2631         work_area->async_render_preview(work_area->get_canvas_view()->get_time());
2632
2633         return 0;
2634 }
2635
2636 void
2637 studio::WorkArea::queue_render_preview()
2638 {
2639         //synfig::info("queue_render_preview(): called for %s", get_canvas_view()->get_time().get_string().c_str());
2640
2641         if(queued==true)
2642         {
2643                 return;
2644                 //synfig::info("queue_render_preview(): already queued, unqueuing");
2645 /*              if(render_idle_func_id)
2646                         g_source_remove(render_idle_func_id);
2647                 render_idle_func_id=0;
2648                 queued=false;
2649 */
2650                 //async_renderer=0;
2651         }
2652
2653         if(dirty_trap_enabled)
2654         {
2655                 dirty_trap_queued++;
2656                 return;
2657         }
2658
2659         int queue_time=50;
2660
2661         if(rendering)
2662                 queue_time+=250;
2663
2664
2665         if(queued==false)
2666         {
2667                 //synfig::info("queue_render_preview(): (re)queuing...");
2668                 //render_idle_func_id=g_idle_add_full(G_PRIORITY_DEFAULT,__render_preview,this,NULL);
2669                 render_idle_func_id=g_timeout_add_full(
2670                         G_PRIORITY_DEFAULT,     // priority -
2671                         queue_time,                     // interval - the time between calls to the function, in milliseconds (1/1000ths of a second)
2672                         __render_preview,       // function - function to call
2673                         this,                           // data     - data to pass to function
2674                         NULL);                          // notify   - function to call when the idle is removed, or NULL
2675                 queued=true;
2676         }
2677 /*      else if(rendering)
2678         {
2679                 refreshes+=5;
2680                 dirty=true;
2681                 queue_draw();
2682         }
2683 */
2684 }
2685
2686 DirtyTrap::DirtyTrap(WorkArea *work_area):work_area(work_area)
2687 {
2688         work_area->dirty_trap_enabled=true;
2689
2690         work_area->dirty_trap_queued=0;
2691 }
2692
2693 DirtyTrap::~DirtyTrap()
2694 {
2695         work_area->dirty_trap_enabled=false;
2696         if(work_area->dirty_trap_queued)
2697                 work_area->queue_render_preview();
2698 }
2699
2700 void
2701 studio::WorkArea::queue_draw_preview()
2702 {
2703         drawing_area->queue_draw();
2704 }
2705
2706 void
2707 studio::WorkArea::set_cursor(const Gdk::Cursor& x)
2708 {
2709         drawing_area->get_window()->set_cursor(x);
2710 }
2711 void
2712 studio::WorkArea::set_cursor(Gdk::CursorType x)
2713 {
2714         drawing_area->get_window()->set_cursor(Gdk::Cursor(x));
2715 }
2716
2717 #include "iconcontroller.h"
2718
2719 void
2720 studio::WorkArea::refresh_cursor()
2721 {
2722 //      set_cursor(IconController::get_tool_cursor(canvas_view->get_smach().get_state_name(),drawing_area->get_window()));
2723 }
2724
2725 void
2726 studio::WorkArea::reset_cursor()
2727 {
2728         drawing_area->get_window()->set_cursor(Gdk::Cursor(Gdk::TOP_LEFT_ARROW));
2729 //      set_cursor(Gdk::TOP_LEFT_ARROW);
2730 }
2731
2732 void
2733 studio::WorkArea::set_zoom(float z)
2734 {
2735         z=max(1.0f/128.0f,min(128.0f,z));
2736         if(z==zoom)
2737                 return;
2738         zoom = z;
2739         refresh_dimension_info();
2740         /*if(async_renderer)
2741         {
2742                 async_renderer->stop();
2743                 async_renderer=0;
2744         }*/
2745         refreshes+=5;
2746         async_update_preview();
2747         //queue_render_preview();
2748 }
2749
2750 void
2751 WorkArea::set_selected_value_node(etl::loose_handle<synfig::ValueNode> x)
2752 {
2753         if(x!=selected_value_node_)
2754         {
2755                 selected_value_node_=x;
2756                 queue_draw();
2757         }
2758 }
2759
2760 void
2761 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x)
2762 {
2763         renderer_set_.insert(x);
2764         x->set_work_area(this);
2765         queue_draw();
2766 }
2767
2768 void
2769 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x, int priority)
2770 {
2771         x->set_priority(priority);
2772         insert_renderer(x);
2773 }
2774
2775 void
2776 WorkArea::erase_renderer(const etl::handle<WorkAreaRenderer> &x)
2777 {
2778         x->set_work_area(0);
2779         renderer_set_.erase(x);
2780         queue_draw();
2781 }
2782
2783 void
2784 WorkArea::resort_render_set()
2785 {
2786         std::set<etl::handle<WorkAreaRenderer> > tmp(
2787                 renderer_set_.begin(),
2788                 renderer_set_.end()
2789         );
2790         renderer_set_.swap(tmp);
2791         queue_draw();
2792 }