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

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