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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file workarea.cpp
   3 **      \brief Template Header
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright 2006 Yue Shi Lai
  10 **      Copyright (c) 2007 Chris Moore
  11 **
  12 **      This package is free software; you can redistribute it and/or
  13 **      modify it under the terms of the GNU General Public License as
  14 **      published by the Free Software Foundation; either version 2 of
  15 **      the License, or (at your option) any later version.
  16 **
  17 **      This package is distributed in the hope that it will be useful,
  18 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20 **      General Public License for more details.
  21 **      \endlegal
  22 */
  23 /* ========================================================================= */
  24
  25 /* === H E A D E R S ======================================================= */
  26
  27 #ifdef USING_PCH
  28 #       include "pch.h"
  29 #else
  30 #ifdef HAVE_CONFIG_H
  31 #       include <config.h>
  32 #endif
  33
  34 #include <sigc++/adaptors/hide.h>
  35
  36 #include "workarea.h"
  37 #include "canvasview.h"
  38 #include "app.h"
  39 #include <gtkmm/window.h>
  40 #include <gtkmm/image.h>
  41 #include <gtkmm/drawingarea.h>
  42 #include <gtkmm/ruler.h>
  43 #include <gtkmm/arrow.h>
  44 #include <gtkmm/image.h>
  45 #include <gtkmm/scrollbar.h>
  46 #include <cmath>
  47 #include <sigc++/retype_return.h>
  48 #include <sigc++/retype.h>
  49 #include <sigc++/hide.h>
  50 #include <ETL/misc>
  51
  52 #include <synfig/target_scanline.h>
  53 #include <synfig/target_tile.h>
  54 #include <synfig/surface.h>
  55 #include <synfig/valuenode_composite.h>
  56 #include <synfigapp/canvasinterface.h>
  57 #include "event_mouse.h"
  58 #include "event_layerclick.h"
  59 #include "widget_color.h"
  60 #include <synfig/distance.h>
  61 #include "workarearenderer.h"
  62
  63 #include "renderer_canvas.h"
  64 #include "renderer_grid.h"
  65 #include "renderer_guides.h"
  66 #include "renderer_timecode.h"
  67 #include "renderer_ducks.h"
  68 #include "renderer_dragbox.h"
  69 #include "renderer_bbox.h"
  70 #include "asyncrenderer.h"
  71 #include <gtkmm/frame.h>
  72
  73 #include <synfig/mutex.h>
  74
  75 #include "general.h"
  76
  77 #endif
  78
  79 /* === U S I N G =========================================================== */
  80
  81 using namespace std;
  82 using namespace etl;
  83 using namespace synfig;
  84 using namespace studio;
  85
  86 /* === M A C R O S ========================================================= */
  87
  88 #define RULER_FIX               15
  89
  90 #ifndef stratof
  91 #define stratof(X) (atof((X).c_str()))
  92 #define stratoi(X) (atoi((X).c_str()))
  93 #endif
  94
  95
  96 /* === G L O B A L S ======================================================= */
  97
  98 /* === C L A S S E S ======================================================= */
  99
 100 class studio::WorkAreaTarget : public synfig::Target_Tile
 101 {
 102 public:
 103         WorkArea *workarea;
 104         bool low_res;
 105         int w,h;
 106         int real_tile_w,real_tile_h;
 107         //std::vector<Glib::RefPtr<Gdk::Pixbuf> >::iterator tile_iter;
 108
 109         int twindow_start, twindow_width, twindow_height, twindow_pad;
 110         int refresh_id;
 111
 112         bool onionskin;
 113         bool onion_first_tile;
 114         int onion_layers;
 115
 116         std::list<synfig::Time> onion_skin_queue;
 117
 118         synfig::Mutex mutex;
 119
 120         void set_onion_skin(bool x)
 121         {
 122                 onionskin=x;
 123
 124                 Time time(rend_desc().get_time_start());
 125
 126                 onion_skin_queue.push_back(time);
 127                 //onion_skin_queue.push_back(time-1);
 128                 //onion_skin_queue.push_back(time+1);
 129
 130                 try
 131                 {
 132                         onion_skin_queue.push_back(
 133                                 get_canvas()->keyframe_list().find_prev(
 134                                         time
 135                                 )->get_time()
 136                         );
 137                 }
 138                 catch(...)
 139                 {  }
 140
 141                 try
 142                 {
 143                         onion_skin_queue.push_back(
 144                                 get_canvas()->keyframe_list().find_next(
 145                                         time
 146                                 )->get_time()
 147                         );
 148                 }
 149                 catch(...)
 150                 {  }
 151
 152                 onion_layers=onion_skin_queue.size();
 153
 154                 onion_first_tile=false;
 155         }
 156 public:
 157
 158         WorkAreaTarget(WorkArea *workarea,int w, int h):
 159                 workarea(workarea),
 160                 low_res(workarea->get_low_resolution_flag()),
 161                 w(w),
 162                 h(h),
 163                 real_tile_w(workarea->tile_w),
 164                 real_tile_h(workarea->tile_h),
 165                 refresh_id(workarea->refreshes),
 166                 onionskin(false),
 167                 onion_layers(0)
 168         {
 169                 //set_remove_alpha();
 170                 //set_avoid_time_sync();
 171                 set_clipping(true);
 172                 if(low_res)
 173                 {
 174                         int div = workarea->get_low_res_pixel_size();
 175                         set_tile_w(workarea->tile_w/div);
 176                         set_tile_h(workarea->tile_h/div);
 177                 }
 178                 else
 179                 {
 180                         set_tile_w(workarea->tile_w);
 181                         set_tile_h(workarea->tile_h);
 182                 }
 183                 set_canvas(workarea->get_canvas());
 184                 set_quality(workarea->get_quality());
 185         }
 186
 187         ~WorkAreaTarget()
 188         {
 189                 workarea->queue_draw();
 190         }
 191
 192         virtual bool set_rend_desc(synfig::RendDesc *newdesc)
 193         {
 194                 assert(workarea);
 195                 newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
 196                 if(low_res) {
 197                         int div = workarea->get_low_res_pixel_size();
 198                         newdesc->set_wh(w/div,h/div);
 199                 }
 200                 else
 201                         newdesc->set_wh(w,h);
 202
 203                 if(
 204                                 workarea->get_w()!=w
 205                         ||      workarea->get_h()!=h
 206                 ) workarea->set_wh(w,h,4);
 207
 208                 workarea->full_frame=false;
 209
 210                 desc=*newdesc;
 211                 return true;
 212         }
 213
 214         virtual int total_tiles()const
 215         {
 216                 int tw(rend_desc().get_w()/get_tile_w());
 217                 int th(rend_desc().get_h()/get_tile_h());
 218                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 219                 if(rend_desc().get_h()%get_tile_h()!=0)th++;
 220                 return tw*th;
 221         }
 222
 223         virtual int next_frame(Time& time)
 224         {
 225                 synfig::Mutex::Lock lock(mutex);
 226
 227                 if(!onionskin)
 228                         return synfig::Target_Tile::next_frame(time);
 229
 230                 onion_first_tile=(onion_layers==(signed)onion_skin_queue.size());
 231
 232                 if(!onion_skin_queue.empty())
 233                 {
 234                         time=onion_skin_queue.front();
 235                         onion_skin_queue.pop_front();
 236                 }
 237                 else
 238                         return 0;
 239
 240                 return onion_skin_queue.size()+1;
 241         }
 242
 243         virtual int next_tile(int& x, int& y)
 244         {
 245                 synfig::Mutex::Lock lock(mutex);
 246                 //if(workarea->tile_queue.empty()) return 0;
 247
 248                 //int curr_tile(workarea->tile_queue.front());
 249                 //workarea->tile_queue.pop_front();
 250                 int curr_tile(workarea->next_unrendered_tile(refresh_id-onion_skin_queue.size()));
 251                 if(curr_tile<0)
 252                         return 0;
 253
 254                 // Width of the image(in tiles)
 255                 int tw(rend_desc().get_w()/get_tile_w());
 256                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 257
 258                 y=(curr_tile/tw)*get_tile_w();
 259                 x=(curr_tile%tw)*get_tile_h();
 260
 261                 // Mark this tile as "up-to-date"
 262                 if(onionskin)
 263                         workarea->tile_book[curr_tile].second=refresh_id-onion_skin_queue.size();
 264                 else
 265                         workarea->tile_book[curr_tile].second=refresh_id;
 266
 267                 return total_tiles()-curr_tile+1;
 268         }
 269
 270
 271         virtual bool start_frame(synfig::ProgressCallback */*cb*/)
 272         {
 273                 synfig::Mutex::Lock lock(mutex);
 274
 275                 int tw(rend_desc().get_w()/get_tile_w());
 276                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 277                 int th(rend_desc().get_h()/get_tile_h());
 278                 if(rend_desc().get_h()%get_tile_h()!=0)th++;
 279
 280                 twindow_start=0;
 281                 twindow_width=tw;
 282                 twindow_height=th;
 283                 twindow_pad=0;
 284
 285                 workarea->tile_book.resize(total_tiles());
 286                 //tile_iter=workarea->tile_book.begin()+twindow_start;
 287                 return true;
 288         }
 289
 290         static void free_buff(const guint8 *x) { free(const_cast<guint8*>(x)); }
 291
 292         virtual bool add_tile(const synfig::Surface &surface, int x, int y)
 293         {
 294                 synfig::Mutex::Lock lock(mutex);
 295                 assert(surface);
 296
 297                 PixelFormat pf(PF_RGB);
 298
 299                 const int total_bytes(get_tile_w()*get_tile_h()*synfig::channels(pf));
 300
 301                 unsigned char *buffer((unsigned char*)malloc(total_bytes));
 302
 303                 if(!surface || !buffer)
 304                         return false;
 305                 {
 306                         unsigned char *dest(buffer);
 307                         const Color *src(surface[0]);
 308                         int w(get_tile_w());
 309                         int h(get_tile_h());
 310                         int x(surface.get_w()*surface.get_h());
 311                         //if(low_res) {
 312                         //      int div = workarea->get_low_res_pixel_size();
 313                         //      w/=div,h/=div;
 314                         //}
 315                         Color dark(0.6,0.6,0.6);
 316                         Color lite(0.8,0.8,0.8);
 317                         for(int i=0;i<x;i++)
 318                                 dest=Color2PixelFormat(
 319                                         Color::blend(
 320                                                 (*(src++)),
 321                                                 ((i/surface.get_w())*8/h+(i%surface.get_w())*8/w)&1?dark:lite,
 322                                                 1.0f
 323                                         ).clamped(),
 324                                         pf,dest,App::gamma
 325                                 );
 326                 }
 327
 328                 x/=get_tile_w();
 329                 y/=get_tile_h();
 330                 int tw(rend_desc().get_w()/get_tile_w());
 331                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 332                 unsigned int index=y*tw+x;
 333
 334                 // Sanity check
 335                 if(index>workarea->tile_book.size())
 336                         return false;
 337
 338                 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
 339
 340                 pixbuf=Gdk::Pixbuf::create_from_data(
 341                         buffer, // pointer to the data
 342                         Gdk::COLORSPACE_RGB, // the colorspace
 343                         ((pf&PF_A)==PF_A), // has alpha?
 344                         8, // bits per sample
 345                         surface.get_w(),        // width
 346                         surface.get_h(),        // height
 347                         surface.get_w()*synfig::channels(pf), // stride (pitch)
 348                         sigc::ptr_fun(&WorkAreaTarget::free_buff)
 349                 );
 350
 351                 if(low_res)
 352                 {
 353                         // We need to scale up
 354                         int div = workarea->get_low_res_pixel_size();
 355                         pixbuf=pixbuf->scale_simple(
 356                                 surface.get_w()*div,
 357                                 surface.get_h()*div,
 358                                 Gdk::INTERP_NEAREST
 359                         );
 360                 }
 361
 362                 if(!onionskin || onion_first_tile || !workarea->tile_book[index].first)
 363                 {
 364                         workarea->tile_book[index].first=pixbuf;
 365                 }
 366                 else
 367                 {
 368                         pixbuf->composite(
 369                                 workarea->tile_book[index].first, // Dest
 370                                 0,//int dest_x
 371                                 0,//int dest_y
 372                                 pixbuf->get_width(), // dest width
 373                                 pixbuf->get_height(), // dest_height,
 374                                 0, // double offset_x
 375                                 0, // double offset_y
 376                                 1, // double scale_x
 377                                 1, // double scale_y
 378                                 Gdk::INTERP_NEAREST, // interp
 379                                 255/(onion_layers-onion_skin_queue.size()+1) //int overall_alpha
 380                         );
 381                 }
 382
 383                 //if(index%2)
 384                         workarea->queue_draw();
 385                 assert(workarea->tile_book[index].first);
 386                 return true;
 387         }
 388
 389         virtual void end_frame()
 390         {
 391                 //workarea->queue_draw();
 392         }
 393 };
 394
 395
 396 class studio::WorkAreaTarget_Full : public synfig::Target_Scanline
 397 {
 398 public:
 399         WorkArea *workarea;
 400         bool low_res;
 401         int w,h;
 402         int real_tile_w,real_tile_h;
 403         //std::vector<Glib::RefPtr<Gdk::Pixbuf> >::iterator tile_iter;
 404
 405         int twindow_start, twindow_width, twindow_height, twindow_pad;
 406         int refresh_id;
 407
 408         bool onionskin;
 409         bool onion_first_tile;
 410         int onion_layers;
 411
 412         Surface surface;
 413
 414         std::list<synfig::Time> onion_skin_queue;
 415
 416         void set_onion_skin(bool x)
 417         {
 418                 onionskin=x;
 419
 420                 Time time(rend_desc().get_time_start());
 421
 422                 onion_skin_queue.push_back(time);
 423                 //onion_skin_queue.push_back(time-1);
 424                 //onion_skin_queue.push_back(time+1);
 425                 if(!onionskin)
 426                         return;
 427
 428                 try
 429                 {
 430                         onion_skin_queue.push_back(
 431                                 get_canvas()->keyframe_list().find_prev(
 432                                         time
 433                                 )->get_time()
 434                         );
 435                 }
 436                 catch(...)
 437                 {  }
 438
 439                 try
 440                 {
 441                         onion_skin_queue.push_back(
 442                                 get_canvas()->keyframe_list().find_next(
 443                                         time
 444                                 )->get_time()
 445                         );
 446                 }
 447                 catch(...)
 448                 {  }
 449
 450                 onion_layers=onion_skin_queue.size();
 451
 452                 onion_first_tile=false;
 453         }
 454 public:
 455
 456         WorkAreaTarget_Full(WorkArea *workarea,int w, int h):
 457                 workarea(workarea),
 458                 low_res(workarea->get_low_resolution_flag()),
 459                 w(w),
 460                 h(h),
 461                 refresh_id(workarea->refreshes),
 462                 onionskin(false),
 463                 onion_layers(0)
 464         {
 465                 set_canvas(workarea->get_canvas());
 466                 set_quality(workarea->get_quality());
 467         }
 468
 469         ~WorkAreaTarget_Full()
 470         {
 471         }
 472
 473         virtual bool set_rend_desc(synfig::RendDesc *newdesc)
 474         {
 475                 assert(workarea);
 476                 newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
 477                 if(low_res)
 478                 {
 479                         int div = workarea->get_low_res_pixel_size();
 480                         newdesc->set_wh(w/div,h/div);
 481                 }
 482                 else
 483                         newdesc->set_wh(w,h);
 484
 485                 if(
 486                                 workarea->get_w()!=w
 487                         ||      workarea->get_h()!=h
 488                 ) workarea->set_wh(w,h,4);
 489
 490                 surface.set_wh(newdesc->get_w(),newdesc->get_h());
 491
 492                 desc=*newdesc;
 493                 workarea->full_frame=true;
 494                 workarea->tile_book.resize(1);
 495                 return true;
 496         }
 497
 498         virtual int next_frame(Time& time)
 499         {
 500                 // Mark this tile as "up-to-date"
 501                 if(onionskin)
 502                         workarea->tile_book[0].second=refresh_id-onion_skin_queue.size();
 503                 else
 504                         workarea->tile_book[0].second=refresh_id;
 505
 506                 if(!onionskin)
 507                         return synfig::Target_Scanline::next_frame(time);
 508
 509                 onion_first_tile=(onion_layers==(signed)onion_skin_queue.size());
 510
 511                 if(!onion_skin_queue.empty())
 512                 {
 513                         time=onion_skin_queue.front();
 514                         onion_skin_queue.pop_front();
 515                 }
 516                 else
 517                         return 0;
 518                 return onion_skin_queue.size()+1;
 519         }
 520
 521
 522         virtual bool start_frame(synfig::ProgressCallback */*cb*/)
 523         {
 524                 return true;
 525         }
 526
 527         virtual Color * start_scanline(int scanline)
 528         {
 529                 return surface[scanline];
 530         }
 531
 532         virtual bool end_scanline()
 533         {
 534                 return true;
 535         }
 536
 537         static void free_buff(const guint8 *x) { free(const_cast<guint8*>(x)); }
 538
 539         virtual void end_frame()
 540         {
 541                 assert(surface);
 542
 543                 PixelFormat pf(PF_RGB);
 544
 545                 const int total_bytes(surface.get_w()*surface.get_h()*synfig::channels(pf));
 546
 547                 unsigned char *buffer((unsigned char*)malloc(total_bytes));
 548
 549                 if(!surface || !buffer)
 550                         return;
 551                 {
 552                         unsigned char *dest(buffer);
 553                         const Color *src(surface[0]);
 554                         int w(surface.get_w());
 555                         //int h(surface.get_h());
 556                         int x(surface.get_w()*surface.get_h());
 557                         //if(low_res) {
 558                         //      int div = workarea->get_low_res_pixel_size();
 559                         //      w/=div,h/=div;
 560                         //}
 561                         Color dark(0.6,0.6,0.6);
 562                         Color lite(0.8,0.8,0.8);
 563                         int tw=workarea->tile_w;
 564                         int th=workarea->tile_h;
 565                         if(low_res)
 566                         {
 567                                 int div = workarea->get_low_res_pixel_size();
 568                                 tw/=div;
 569                                 th/=div;
 570                         }
 571                         for(int i=0;i<x;i++)
 572                                 dest=Color2PixelFormat(
 573                                         Color::blend(
 574                                                 (*(src++)),
 575                                                 ((i/w)*8/th+(i%w)*8/tw)&1?dark:lite,
 576                                                 1.0f
 577                                         ).clamped(),
 578                                         pf,
 579                                         dest,
 580                                         App::gamma
 581                                 );
 582                 }
 583
 584                 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
 585
 586                 pixbuf=Gdk::Pixbuf::create_from_data(
 587                         buffer, // pointer to the data
 588                         Gdk::COLORSPACE_RGB, // the colorspace
 589                         ((pf&PF_A)==PF_A), // has alpha?
 590                         8, // bits per sample
 591                         surface.get_w(),        // width
 592                         surface.get_h(),        // height
 593                         surface.get_w()*synfig::channels(pf), // stride (pitch)
 594                         sigc::ptr_fun(&WorkAreaTarget::free_buff)
 595                 );
 596
 597                 if(low_res)
 598                 {
 599                         // We need to scale up
 600                         int div = workarea->get_low_res_pixel_size();
 601                         pixbuf=pixbuf->scale_simple(
 602                                 surface.get_w()*div,
 603                                 surface.get_h()*div,
 604                                 Gdk::INTERP_NEAREST
 605                         );
 606                 }
 607
 608                 int index=0;
 609
 610                 if(!onionskin || onion_first_tile || !workarea->tile_book[index].first)
 611                 {
 612                         workarea->tile_book[index].first=pixbuf;
 613                 }
 614                 else
 615                 {
 616                         pixbuf->composite(
 617                                 workarea->tile_book[index].first, // Dest
 618                                 0,//int dest_x
 619                                 0,//int dest_y
 620                                 pixbuf->get_width(), // dest width
 621                                 pixbuf->get_height(), // dest_height,
 622                                 0, // double offset_x
 623                                 0, // double offset_y
 624                                 1, // double scale_x
 625                                 1, // double scale_y
 626                                 Gdk::INTERP_NEAREST, // interp
 627                                 255/(onion_layers-onion_skin_queue.size()+1) //int overall_alpha
 628                         );
 629                 }
 630
 631                 workarea->queue_draw();
 632                 assert(workarea->tile_book[index].first);
 633         }
 634 };
 635
 636
 637
 638
 639 /* === M E T H O D S ======================================================= */
 640
 641
 642 WorkArea::WorkArea(etl::loose_handle<synfigapp::CanvasInterface> canvas_interface):
 643         Gtk::Table(4+RULER_FIX, 3, false),
 644         canvas_interface(canvas_interface),
 645         canvas(canvas_interface->get_canvas()),
 646         scrollx_adjustment(0,-4,4,0.01,0.1),
 647         scrolly_adjustment(0,-4,4,0.01,0.1),
 648         w(TILE_SIZE),
 649         h(TILE_SIZE),
 650         last_event_time(0),
 651         progresscallback(0),
 652         dragging(DRAG_NONE),
 653         show_grid(false),
 654         tile_w(TILE_SIZE),
 655         tile_h(TILE_SIZE),
 656         timecode_width(0),
 657         timecode_height(0)
 658 {
 659         show_guides=true;
 660         curr_input_device=0;
 661         full_frame=false;
 662         allow_duck_clicks=true;
 663         allow_layer_clicks=true;
 664         render_idle_func_id=0;
 665         zoom=prev_zoom=1.0;
 666         quality=10;
 667         low_res_pixel_size=2;
 668         rendering=false;
 669         canceled_=false;
 670         low_resolution=true;
 671         pw=0.001;
 672         ph=0.001;
 673         last_focus_point=Point(0,0);
 674         onion_skin=false;
 675         queued=false;
 676         dirty_trap_enabled=false;
 677         solid_lines=true;
 678
 679         dirty_trap_queued=0;
 680
 681         meta_data_lock=false;
 682
 683         insert_renderer(new Renderer_Canvas,    000);
 684         insert_renderer(new Renderer_Grid,              100);
 685         insert_renderer(new Renderer_Guides,    200);
 686         insert_renderer(new Renderer_Ducks,             300);
 687         insert_renderer(new Renderer_BBox,              399);
 688         insert_renderer(new Renderer_Dragbox,   400);
 689         insert_renderer(new Renderer_Timecode,  500);
 690
 691         signal_duck_selection_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 692         signal_strokes_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 693         signal_grid_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 694         signal_grid_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::save_meta_data));
 695         signal_sketch_saved().connect(sigc::mem_fun(*this,&studio::WorkArea::save_meta_data));
 696
 697         // Not that it really makes a difference... (setting this to zero, that is)
 698         refreshes=0;
 699
 700         drawing_area=manage(new class Gtk::DrawingArea());
 701         drawing_area->show();
 702         drawing_area->set_extension_events(Gdk::EXTENSION_EVENTS_ALL);
 703
 704         drawing_frame=manage(new Gtk::Frame);
 705         drawing_frame->add(*drawing_area);
 706         //drawing_frame->set_shadow_type(Gtk::SHADOW_NONE);
 707         //drawing_frame->property_border_width()=5;
 708         //drawing_frame->modify_fg(Gtk::STATE_NORMAL,Gdk::Color("#00ffff"));
 709         //drawing_frame->modify_base(Gtk::STATE_NORMAL,Gdk::Color("#ff00ff"));
 710         /*drawing_frame->modify_fg(Gtk::STATE_ACTIVE,Gdk::Color("#00ffff"));
 711         drawing_frame->modify_base(Gtk::STATE_ACTIVE,Gdk::Color("#ff00ff"));
 712         drawing_frame->modify_bg(Gtk::STATE_ACTIVE,Gdk::Color("#00ff00"));
 713         drawing_frame->modify_fg(Gtk::STATE_INSENSITIVE,Gdk::Color("#00ffff"));
 714         drawing_frame->modify_base(Gtk::STATE_INSENSITIVE,Gdk::Color("#ff00ff"));
 715         drawing_frame->modify_bg(Gtk::STATE_INSENSITIVE,Gdk::Color("#00ff00"));
 716         drawing_frame->modify_fg(Gtk::STATE_SELECTED,Gdk::Color("#00ffff"));
 717         drawing_frame->modify_base(Gtk::STATE_SELECTED,Gdk::Color("#ff00ff"));
 718         drawing_frame->modify_bg(Gtk::STATE_SELECTED,Gdk::Color("#00ff00"));
 719         */
 720         //drawing_frame->set_state(Gtk::STATE_NORMAL);
 721
 722         drawing_frame->show();
 723
 724         attach(*drawing_frame, 1, 3+RULER_FIX, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 725
 726         Gtk::IconSize iconsize=Gtk::IconSize::from_name("synfig-small_icon");
 727
 728
 729         // Create the vertical and horizontal rulers
 730         vruler = manage(new class Gtk::VRuler());
 731         hruler = manage(new class Gtk::HRuler());
 732         vruler->set_metric(Gtk::PIXELS);
 733         hruler->set_metric(Gtk::PIXELS);
 734         vruler->show();
 735         hruler->show();
 736         attach(*vruler, 0, 1, 1, 2, Gtk::SHRINK|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 737         attach(*hruler, 1, 3+RULER_FIX, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::SHRINK|Gtk::FILL, 0, 0);
 738         hruler->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_hruler_event));
 739         vruler->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_vruler_event));
 740         hruler->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 741         vruler->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 742
 743         // Create the menu button
 744         menubutton=manage(new class Gtk::Button());
 745         Gtk::Arrow *arrow1 = manage(new class Gtk::Arrow(Gtk::ARROW_RIGHT, Gtk::SHADOW_OUT));
 746         menubutton->add(*arrow1);
 747         menubutton->show_all();
 748         menubutton->signal_pressed().connect(sigc::mem_fun(*this, &WorkArea::popup_menu));
 749         attach(*menubutton, 0, 1, 0, 1, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
 750
 751
 752
 753         Gtk::VScrollbar *vscrollbar1 = manage(new class Gtk::VScrollbar(*get_scrolly_adjustment()));
 754         Gtk::HScrollbar *hscrollbar1 = manage(new class Gtk::HScrollbar(*get_scrollx_adjustment()));
 755         vscrollbar1->show();
 756         hscrollbar1->show();
 757         attach(*vscrollbar1, 3+RULER_FIX, 4+RULER_FIX, 1, 2, Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 758         attach(*hscrollbar1, 2+RULER_FIX, 3+RULER_FIX, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::FILL, 0, 0);
 759
 760         ZoomDial *zoomdial=manage(new class ZoomDial(iconsize));
 761         zoomdial->signal_zoom_in().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_in));
 762         zoomdial->signal_zoom_out().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_out));
 763         zoomdial->signal_zoom_fit().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_fit));
 764         zoomdial->signal_zoom_norm().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_norm));
 765         zoomdial->show();
 766         attach(*zoomdial, 0, 2+RULER_FIX, 2, 3, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
 767
 768         drawing_area->add_events(Gdk::KEY_PRESS_MASK | Gdk::KEY_RELEASE_MASK);
 769         add_events(Gdk::KEY_PRESS_MASK);
 770         drawing_area->add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
 771         drawing_area->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::POINTER_MOTION_MASK);
 772
 773         // ----------------- Attach signals
 774
 775         drawing_area->signal_expose_event().connect(sigc::mem_fun(*this, &WorkArea::refresh));
 776         drawing_area->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_drawing_area_event));
 777         drawing_area->signal_size_allocate().connect(sigc::hide(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info)));
 778
 779
 780
 781         canvas_interface->signal_rend_desc_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 782         // When either of the scrolling adjustments change, then redraw.
 783         get_scrollx_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::queue_scroll));
 784         get_scrolly_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::queue_scroll));
 785         get_scrollx_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 786         get_scrolly_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 787
 788         get_canvas()->signal_meta_data_changed("grid_size").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 789         get_canvas()->signal_meta_data_changed("grid_snap").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 790         get_canvas()->signal_meta_data_changed("grid_show").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 791         get_canvas()->signal_meta_data_changed("guide_show").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 792         get_canvas()->signal_meta_data_changed("guide_x").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 793         get_canvas()->signal_meta_data_changed("guide_y").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 794         get_canvas()->signal_meta_data_changed("onion_skin").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 795         get_canvas()->signal_meta_data_changed("guide_snap").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 796         get_canvas()->signal_meta_data_changed("sketch").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 797         get_canvas()->signal_meta_data_changed("solid_lines").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 798
 799         queued=false;
 800         meta_data_lock=false;
 801         set_focus_point(Point(0,0));
 802
 803
 804         load_meta_data();
 805         // Load sketch
 806         {
 807                 String data(canvas->get_meta_data("sketch"));
 808                 if(!data.empty())
 809                 {
 810                         if(!load_sketch(data))
 811                                 load_sketch(dirname(canvas->get_file_name())+ETL_DIRECTORY_SEPARATOR+basename(data));
 812                 }
 813         }
 814
 815         hruler->property_max_size()=double(10.0);
 816         vruler->property_max_size()=double(10.0);
 817
 818         drawing_area->set_flags(drawing_area->get_flags()|Gtk::CAN_FOCUS);
 819 }
 820
 821 WorkArea::~WorkArea()
 822 {
 823 //      delete [] buffer;
 824
 825         // don't leave the render function queued if we are about to vanish;
 826         // that causes crashes
 827         if(render_idle_func_id)
 828                 render_idle_func_id=0;
 829 }
 830
 831 bool
 832 WorkArea::get_updating()const
 833 {
 834         return App::single_threaded && async_renderer && async_renderer->updating;
 835 }
 836
 837 void
 838 WorkArea::stop_updating(bool cancel)
 839 {
 840         async_renderer->stop();
 841         if (cancel) canceled_=true;
 842 }
 843
 844 void
 845 WorkArea::save_meta_data()
 846 {
 847         if(meta_data_lock)
 848                 return;
 849         meta_data_lock=true;
 850
 851         Vector s(get_grid_size());
 852         canvas_interface->set_meta_data("grid_size",strprintf("%f %f",s[0],s[1]));
 853         canvas_interface->set_meta_data("grid_snap",get_grid_snap()?"1":"0");
 854         canvas_interface->set_meta_data("guide_snap",get_guide_snap()?"1":"0");
 855         canvas_interface->set_meta_data("guide_show",get_show_guides()?"1":"0");
 856         canvas_interface->set_meta_data("grid_show",show_grid?"1":"0");
 857         canvas_interface->set_meta_data("onion_skin",onion_skin?"1":"0");
 858         {
 859                 String data;
 860                 GuideList::const_iterator iter;
 861                 for(iter=get_guide_list_x().begin();iter!=get_guide_list_x().end();++iter)
 862                 {
 863                         if(!data.empty())
 864                                 data+=' ';
 865                         data+=strprintf("%f",*iter);
 866                 }
 867                 if(!data.empty())
 868                         canvas_interface->set_meta_data("guide_x",data);
 869
 870                 data.clear();
 871                 for(iter=get_guide_list_y().begin();iter!=get_guide_list_y().end();++iter)
 872                 {
 873                         if(!data.empty())
 874                                 data+=' ';
 875                         data+=strprintf("%f",*iter);
 876                 }
 877                 if(!data.empty())
 878                         canvas_interface->set_meta_data("guide_y",data);
 879         }
 880
 881         if(get_sketch_filename().size())
 882         {
 883                 if(dirname(canvas->get_file_name())==dirname(get_sketch_filename()))
 884                         canvas_interface->set_meta_data("sketch",basename(get_sketch_filename()));
 885                 else
 886                         canvas_interface->set_meta_data("sketch",get_sketch_filename());
 887         }
 888
 889         meta_data_lock=false;
 890 }
 891
 892 void
 893 WorkArea::load_meta_data()
 894 {
 895         if(meta_data_lock)
 896                 return;
 897         meta_data_lock=true;
 898
 899         String data;
 900
 901         data=canvas->get_meta_data("grid_size");
 902         if(!data.empty())
 903         {
 904                 float gx(get_grid_size()[0]),gy(get_grid_size()[1]);
 905
 906                 String::iterator iter(find(data.begin(),data.end(),' '));
 907                 String tmp(data.begin(),iter);
 908
 909                 if(!tmp.empty())
 910                         gx=stratof(tmp);
 911                 else
 912                         synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 913
 914                 if(iter==data.end())
 915                         tmp.clear();
 916                 else
 917                         tmp=String(iter+1,data.end());
 918
 919                 if(!tmp.empty())
 920                         gy=stratof(tmp);
 921                 else
 922                         synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 923
 924                 set_grid_size(Vector(gx,gy));
 925         }
 926
 927         data=canvas->get_meta_data("grid_show");
 928         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 929                 show_grid=true;
 930         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 931                 show_grid=false;
 932
 933         data=canvas->get_meta_data("solid_lines");
 934         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 935                 solid_lines=true;
 936         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 937                 solid_lines=false;
 938
 939         data=canvas->get_meta_data("guide_show");
 940         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 941                 show_guides=true;
 942         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 943                 show_guides=false;
 944
 945         data=canvas->get_meta_data("grid_snap");
 946         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 947                 set_grid_snap(true);
 948         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 949                 set_grid_snap(false);
 950
 951         data=canvas->get_meta_data("guide_snap");
 952         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 953                 set_guide_snap(true);
 954         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 955                 set_guide_snap(false);
 956
 957         data=canvas->get_meta_data("onion_skin");
 958         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 959                 set_onion_skin(true);
 960         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 961                 set_onion_skin(false);
 962
 963         data=canvas->get_meta_data("guide_x");
 964         get_guide_list_x().clear();
 965         while(!data.empty())
 966         {
 967                 String::iterator iter(find(data.begin(),data.end(),' '));
 968                 String guide(data.begin(),iter);
 969
 970                 if(!guide.empty())
 971                         get_guide_list_x().push_back(stratof(guide));
 972
 973                 if(iter==data.end())
 974                         data.clear();
 975                 else
 976                         data=String(iter+1,data.end());
 977         }
 978         //sort(get_guide_list_x());
 979
 980         data=canvas->get_meta_data("guide_y");
 981         get_guide_list_y().clear();
 982         while(!data.empty())
 983         {
 984                 String::iterator iter(find(data.begin(),data.end(),' '));
 985                 String guide(data.begin(),iter);
 986
 987                 if(!guide.empty())
 988                         get_guide_list_y().push_back(stratof(guide));
 989
 990                 if(iter==data.end())
 991                         data.clear();
 992                 else
 993                         data=String(iter+1,data.end());
 994         }
 995         //sort(get_guide_list_y());
 996
 997         meta_data_lock=false;
 998         queue_draw();
 999 }
1000
1001 void
1002 WorkArea::set_onion_skin(bool x)
1003 {
1004         if(onion_skin==x)
1005                 return;
1006         onion_skin=x;
1007         save_meta_data();
1008         queue_render_preview();
1009         signal_onion_skin_changed()();
1010 }
1011
1012 bool
1013 WorkArea::get_onion_skin()const
1014 {
1015         return onion_skin;
1016 }
1017
1018 void
1019 WorkArea::enable_grid()
1020 {
1021         show_grid=true;
1022         save_meta_data();
1023         queue_draw();
1024 }
1025
1026 void
1027 WorkArea::disable_grid()
1028 {
1029         show_grid=false;
1030         save_meta_data();
1031         queue_draw();
1032 }
1033
1034 void
1035 WorkArea::set_show_guides(bool x)
1036 {
1037         show_guides=x;
1038         save_meta_data();
1039         queue_draw();
1040 }
1041
1042 void
1043 WorkArea::toggle_grid()
1044 {
1045         show_grid=!show_grid;
1046         save_meta_data();
1047         queue_draw();
1048 }
1049
1050 void
1051 WorkArea::set_low_resolution_flag(bool x)
1052 {
1053         if(x!=low_resolution)
1054         {
1055                 low_resolution=x;
1056                 queue_render_preview();
1057         }
1058 }
1059
1060 void
1061 WorkArea::toggle_low_resolution_flag()
1062 {
1063         set_low_resolution_flag(!get_low_resolution_flag());
1064 }
1065
1066 void
1067 WorkArea::popup_menu()
1068 {
1069         signal_popup_menu()();
1070 }
1071
1072 void
1073 WorkArea::set_grid_size(const synfig::Vector &s)
1074 {
1075         Duckmatic::set_grid_size(s);
1076         save_meta_data();
1077         queue_draw();
1078 }
1079
1080 void
1081 WorkArea::set_focus_point(const synfig::Point &point)
1082 {
1083         // These next three lines try to ensure that we place the
1084         // focus on a pixel boundary
1085         /*Point adjusted(point[0]/abs(get_pw()),point[1]/abs(get_ph()));
1086         adjusted[0]=(abs(adjusted[0]-floor(adjusted[0]))<0.5)?floor(adjusted[0])*abs(get_pw()):ceil(adjusted[0])*abs(get_ph());
1087         adjusted[1]=(abs(adjusted[1]-floor(adjusted[1]))<0.5)?floor(adjusted[1])*abs(get_ph()):ceil(adjusted[1])*abs(get_ph());
1088         */
1089         const synfig::Point& adjusted(point);
1090
1091         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1092         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1093         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1094
1095         get_scrollx_adjustment()->set_value(adjusted[0]*x_factor);
1096         get_scrolly_adjustment()->set_value(adjusted[1]*y_factor);
1097 }
1098
1099 synfig::Point
1100 WorkArea::get_focus_point()const
1101 {
1102         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1103         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1104         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1105
1106         return synfig::Point(get_scrollx_adjustment()->get_value()*x_factor, get_scrolly_adjustment()->get_value()*y_factor);
1107 }
1108
1109 bool
1110 WorkArea::set_wh(int W, int H,int CHAN)
1111 {
1112         // If our size is already set, don't set it again
1113         if(W==w && H==h && CHAN==bpp)
1114         {
1115                 return true;
1116         }
1117         if(W<=0 || H<=0 || CHAN<=0)
1118                 return false;
1119
1120         assert(W>0);
1121         assert(H>0);
1122         assert(CHAN>0);
1123
1124         // Set all of the parameters
1125         w=W;
1126         h=H;
1127         bpp=CHAN;
1128
1129         refresh_dimension_info();
1130
1131         tile_book.clear();
1132
1133         return true;
1134 }
1135
1136 bool
1137 WorkArea::on_key_press_event(GdkEventKey* event)
1138 {
1139         if(get_selected_ducks().empty())
1140                 return false;
1141
1142         Real multiplier(1.0);
1143
1144         if(Gdk::ModifierType(event->state)&GDK_SHIFT_MASK)
1145                 multiplier=10.0;
1146
1147         Vector nudge;
1148         switch(event->keyval)
1149         {
1150                 case GDK_Left:
1151                         nudge=Vector(-pw,0);
1152                         break;
1153                 case GDK_Right:
1154                         nudge=Vector(pw,0);
1155                         break;
1156                 case GDK_Up:
1157                         nudge=Vector(0,-ph);
1158                         break;
1159                 case GDK_Down:
1160                         nudge=Vector(0,ph);
1161                         break;
1162                 default:
1163                         return false;
1164                         break;
1165         }
1166
1167         synfigapp::Action::PassiveGrouper grouper(instance.get(),"Nudge");
1168
1169         // Grid snap does not apply to nudging
1170         bool grid_snap_holder(get_grid_snap());
1171         bool guide_snap_holder(get_guide_snap());
1172         set_grid_snap(false);
1173
1174         try {
1175                 start_duck_drag(get_selected_duck()->get_trans_point());
1176                 translate_selected_ducks(get_selected_duck()->get_trans_point()+nudge*multiplier);
1177                 end_duck_drag();
1178         }
1179         catch(String)
1180         {
1181                 canvas_view->duck_refresh_flag=true;
1182                 canvas_view->queue_rebuild_ducks();
1183         }
1184
1185         set_grid_snap(grid_snap_holder);
1186         set_guide_snap(guide_snap_holder);
1187
1188         return true;
1189 }
1190
1191 bool
1192 WorkArea::on_drawing_area_event(GdkEvent *event)
1193 {
1194         synfig::Point mouse_pos;
1195     float bezier_click_pos;
1196         const float radius((abs(pw)+abs(ph))*4);
1197         int button_pressed(0);
1198         float pressure(0);
1199         bool is_mouse(false);
1200         Gdk::ModifierType modifier(Gdk::ModifierType(0));
1201
1202         // Handle input stuff
1203         if(
1204                 event->any.type==GDK_MOTION_NOTIFY ||
1205                 event->any.type==GDK_BUTTON_PRESS ||
1206                 event->any.type==GDK_2BUTTON_PRESS ||
1207                 event->any.type==GDK_3BUTTON_PRESS ||
1208                 event->any.type==GDK_BUTTON_RELEASE
1209         )
1210         {
1211                 GdkDevice *device;
1212                 if(event->any.type==GDK_MOTION_NOTIFY)
1213                 {
1214                         device=event->motion.device;
1215                         modifier=Gdk::ModifierType(event->motion.state);
1216                 }
1217                 else
1218                 {
1219                         device=event->button.device;
1220                         modifier=Gdk::ModifierType(event->button.state);
1221                         drawing_area->grab_focus();
1222                 }
1223
1224                 // Make sure we recognize the device
1225                 if(curr_input_device)
1226                 {
1227                         if(curr_input_device!=device)
1228                         {
1229                                 assert(device);
1230                                 curr_input_device=device;
1231                                 signal_input_device_changed()(curr_input_device);
1232                         }
1233                 }
1234                 else if(device)
1235                 {
1236                         curr_input_device=device;
1237                         signal_input_device_changed()(curr_input_device);
1238                 }
1239
1240                 assert(curr_input_device);
1241
1242                 // Calculate the position of the
1243                 // input device in canvas coordinates
1244                 // and the buttons
1245                 if(!event->button.axes)
1246                 {
1247                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->button.x,event->button.y)));
1248                         button_pressed=event->button.button;
1249                         pressure=1.0f;
1250                         is_mouse=true;
1251                         if(isnan(event->button.x) || isnan(event->button.y))
1252                                 return false;
1253                 }
1254                 else
1255                 {
1256                         double x(event->button.axes[0]);
1257                         double y(event->button.axes[1]);
1258                         if(isnan(x) || isnan(y))
1259                                 return false;
1260
1261                         pressure=event->button.axes[2];
1262                         //synfig::info("pressure=%f",pressure);
1263                         pressure-=0.04f;
1264                         pressure/=1.0f-0.04f;
1265
1266
1267                         assert(!isnan(pressure));
1268
1269                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)));
1270
1271                         button_pressed=event->button.button;
1272
1273                         if(button_pressed==1 && pressure<0 && (event->any.type!=GDK_BUTTON_RELEASE && event->any.type!=GDK_BUTTON_PRESS))
1274                                 button_pressed=0;
1275                         if(pressure<0)
1276                                 pressure=0;
1277
1278                         //if(event->any.type==GDK_BUTTON_PRESS && button_pressed)
1279                         //      synfig::info("Button pressed on input device = %d",event->button.button);
1280
1281                         //if(event->button.axes[2]>0.1)
1282                         //      button_pressed=1;
1283                         //else
1284                         //      button_pressed=0;
1285                 }
1286         }
1287         // GDK mouse scrolling events
1288         else if(event->any.type==GDK_SCROLL)
1289         {
1290                 // GDK information needed to properly interpret mouse
1291                 // scrolling events are: scroll.state, scroll.x/scroll.y, and
1292                 // scroll.direction. The value of scroll.direction will be
1293                 // obtained later.
1294
1295                 modifier=Gdk::ModifierType(event->scroll.state);
1296                 mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->scroll.x,event->scroll.y)));
1297         }
1298
1299         // Handle the renderables
1300         {
1301                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
1302                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
1303                 {
1304                         if((*iter)->get_enabled())
1305                                 if((*iter)->event_vfunc(event))
1306                                 {
1307                                         // Event handled. Return true.
1308                                         return true;
1309                                 }
1310                 }
1311         }
1312
1313         // Event hasn't been handled, pass it down
1314         switch(event->type)
1315     {
1316         case GDK_BUTTON_PRESS:
1317                 {
1318                 switch(button_pressed)
1319                 {
1320                 case 1: // Attempt to click on a duck
1321                 {
1322                         etl::handle<Duck> duck;
1323                         dragging=DRAG_NONE;
1324
1325                         if(allow_duck_clicks)
1326                         {
1327                                 duck=find_duck(mouse_pos,radius);
1328
1329                                 if(duck)
1330                                 {
1331                                         // make a note of whether the duck we click on was selected or not
1332                                         if(duck_is_selected(duck))
1333                                                 clicked_duck=duck;
1334                                         else
1335                                         {
1336                                                 clicked_duck=0;
1337                                                 // if CTRL isn't pressed, clicking an unselected duck will unselect all other ducks
1338                                                 if(!(modifier&GDK_CONTROL_MASK))
1339                                                         clear_selected_ducks();
1340                                                 select_duck(duck);
1341                                         }
1342                                 }
1343                         }
1344                         //else
1345                         //      clear_selected_ducks();
1346
1347
1348
1349                         selected_bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1350                         if(duck && duck->get_editable())
1351                         {
1352                                 //get_selected_duck()->signal_user_click(0)();
1353                                 //if(clicked_duck)clicked_duck->signal_user_click(0)();
1354
1355                                 // if the user is holding shift while clicking on a tangent duck, consider splitting the tangent
1356                                 if (event->motion.state&GDK_SHIFT_MASK && duck->get_type() == Duck::TYPE_TANGENT)
1357                                 {
1358                                         synfigapp::ValueDesc value_desc = duck->get_value_desc();
1359
1360                                         // we have the tangent, but need the vertex - that's the parent
1361                                         if (value_desc.parent_is_value_node()) {
1362                                                 ValueNode_Composite::Handle parent_value_node = value_desc.get_parent_value_node();
1363
1364                                                 // if the tangent isn't split, then split it
1365                                                 if (!((*(parent_value_node->get_link("split")))(get_time()).get(bool())))
1366                                                 {
1367                                                         get_canvas_view()->canvas_interface()->
1368                                                                 change_value(synfigapp::ValueDesc(parent_value_node,
1369                                                                                                                                   parent_value_node->get_link_index_from_name("split")),
1370                                                                                          true);
1371                                                         // rebuild the ducks from scratch, so the tangents ducks aren't connected
1372                                                         get_canvas_view()->rebuild_ducks();
1373
1374                                                         // reprocess the mouse click
1375                                                         return on_drawing_area_event(event);
1376                                                 }
1377                                         } else {
1378                                                 // I don't know how to access the vertex from the tangent duck when originally drawing the bline in the bline tool
1379
1380                                                 // synfig::ValueNode::Handle vn = value_desc.get_value_node();
1381                                                 synfig::info("parent isn't value node?  shift-drag-tangent doesn't work in bline tool yet...");
1382                                         }
1383                                 }
1384
1385                                 dragging=DRAG_DUCK;
1386                                 drag_point=mouse_pos;
1387                                 //drawing_area->queue_draw();
1388                                 start_duck_drag(mouse_pos);
1389                                 get_canvas_view()->reset_cancel_status();
1390                                 return true;
1391                         }
1392 // I commented out this section because
1393 // it was causing issues when rotoscoping.
1394 // At the moment, we don't need it, so
1395 // this was the easiest way to fix the problem.
1396 /*
1397                         else
1398                         if(selected_bezier)
1399                         {
1400                                 selected_duck=0;
1401                                 selected_bezier->signal_user_click(0)(bezier_click_pos);
1402                         }
1403 */
1404                         else
1405                         {
1406                                 //clear_selected_ducks();
1407                                 selected_bezier=0;
1408                                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_LEFT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1409                                 {
1410                                         // Check for a guide click
1411                                         GuideList::iterator iter;
1412
1413                                         iter=find_guide_x(mouse_pos,radius);
1414                                         if(iter==get_guide_list_x().end())
1415                                         {
1416                                                 curr_guide_is_x=false;
1417                                                 iter=find_guide_y(mouse_pos,radius);
1418                                         }
1419                                         else
1420                                                 curr_guide_is_x=true;
1421                                         if(iter!=get_guide_list_x().end() && iter!=get_guide_list_y().end())
1422                                         {
1423                                                 dragging=DRAG_GUIDE;
1424                                                 curr_guide=iter;
1425                                                 return true;
1426                                         }
1427
1428
1429                                         // All else fails, try making a selection box
1430                                         dragging=DRAG_BOX;
1431                                         curr_point=drag_point=mouse_pos;
1432                                         return true;
1433                                 }
1434                         }
1435                         break;
1436                 }
1437                 case 2: // Attempt to drag and move the window
1438                 {
1439                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1440                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1441                         if(duck)
1442                                 duck->signal_user_click(1)();
1443                         else
1444                         if(bezier)
1445                                 bezier->signal_user_click(1)(bezier_click_pos);
1446
1447                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_MIDDLE,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1448                         if(is_mouse)
1449                         {
1450                                 dragging=DRAG_WINDOW;
1451                                 drag_point=mouse_pos;
1452                                 signal_user_click(1)(mouse_pos);
1453                         }
1454                         break;
1455                 }
1456                 case 3: // Attempt to either get info on a duck, or open the menu
1457                 {
1458                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1459                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1460
1461                         Layer::Handle layer(get_canvas()->find_layer(mouse_pos));
1462                         if(duck)
1463                         {
1464                                 if(get_selected_ducks().size()<=1)
1465                                         duck->signal_user_click(2)();
1466                                 else
1467                                         canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MULTIPLE_DUCKS_CLICKED,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1468                                 return true;
1469                         }
1470                         else if(bezier)
1471                         {
1472                                 bezier->signal_user_click(2)(bezier_click_pos);
1473                                 return true;
1474                         }
1475                         else if (layer)
1476                         {
1477                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_RIGHT,mouse_pos))==Smach::RESULT_OK)
1478                                         return false;
1479                                 return true;
1480                         }
1481                         else
1482                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1483                         /*
1484                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1485                         {
1486                                 //popup_menu();
1487                                 return true;
1488                         }
1489                         */
1490                         break;
1491                 }
1492                 case 4:
1493                         signal_user_click(3)(mouse_pos);
1494                         break;
1495                 case 5:
1496                         signal_user_click(4)(mouse_pos);
1497                         break;
1498                 default:
1499                         break;
1500                 }
1501                 }
1502                 break;
1503         case GDK_MOTION_NOTIFY:
1504                 curr_point=mouse_pos;
1505
1506                 if(event->motion.time-last_event_time<25)
1507                         return true;
1508                 else
1509                         last_event_time=event->motion.time;
1510
1511                 signal_cursor_moved_();
1512
1513                 // Guide/Duck highlights on hover
1514                 if(dragging==DRAG_NONE)
1515                 {
1516                         GuideList::iterator iter;
1517
1518                         iter=find_guide_x(mouse_pos,radius);
1519                         if(iter==get_guide_list_x().end())
1520                                 iter=find_guide_y(mouse_pos,radius);
1521
1522                         if(iter!=curr_guide)
1523                         {
1524                                 curr_guide=iter;
1525                                 drawing_area->queue_draw();
1526                         }
1527
1528                         etl::handle<Duck> duck;
1529                         duck=find_duck(mouse_pos,radius);
1530                         if(duck!=hover_duck)
1531                         {
1532                                 hover_duck=duck;
1533                                 drawing_area->queue_draw();
1534                         }
1535                 }
1536
1537
1538                 if(dragging==DRAG_DUCK)
1539                 {
1540                         if(canvas_view->get_cancel_status())
1541                         {
1542                                 dragging=DRAG_NONE;
1543                                 canvas_view->queue_rebuild_ducks();
1544                                 return true;
1545                         }
1546                         /*
1547                         Point point((mouse_pos-selected_duck->get_origin())/selected_duck->get_scalar());
1548                         if(get_grid_snap())
1549                         {
1550                                 point[0]=floor(point[0]/grid_size[0]+0.5)*grid_size[0];
1551                                 point[1]=floor(point[1]/grid_size[1]+0.5)*grid_size[1];
1552                         }
1553                         selected_duck->set_point(point);
1554                         */
1555
1556                         //Point p(mouse_pos);
1557
1558                         set_axis_lock(event->motion.state&GDK_SHIFT_MASK);
1559
1560                         translate_selected_ducks(mouse_pos);
1561
1562                         drawing_area->queue_draw();
1563                 }
1564
1565                 if(dragging==DRAG_BOX)
1566                 {
1567                         curr_point=mouse_pos;
1568                         drawing_area->queue_draw();
1569                 }
1570
1571                 if(dragging==DRAG_GUIDE)
1572                 {
1573                         if(curr_guide_is_x)
1574                                 *curr_guide=mouse_pos[0];
1575                         else
1576                                 *curr_guide=mouse_pos[1];
1577                         drawing_area->queue_draw();
1578                 }
1579
1580                 if(dragging!=DRAG_WINDOW)
1581                 {       // Update those triangle things on the rulers
1582                         const synfig::Point point(mouse_pos);
1583                         hruler->property_position()=Distance(point[0],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1584                         vruler->property_position()=Distance(point[1],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1585                 }
1586
1587                 if(dragging == DRAG_WINDOW)
1588                         set_focus_point(get_focus_point() + mouse_pos-drag_point);
1589                 else if (event->motion.state & GDK_BUTTON1_MASK &&
1590                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_LEFT,
1591                                                                                                                                   mouse_pos,pressure,modifier)) == Smach::RESULT_ACCEPT)
1592                         return true;
1593                 else if (event->motion.state & GDK_BUTTON2_MASK &&
1594                                  canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_MIDDLE,
1595                                                                                                                                    mouse_pos, pressure, modifier)) == Smach::RESULT_ACCEPT)
1596                         return true;
1597                 else if (event->motion.state & GDK_BUTTON3_MASK &&
1598                                  canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_RIGHT,
1599                                                                                                                                    mouse_pos, pressure, modifier)) == Smach::RESULT_ACCEPT)
1600                         return true;
1601                 else if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_MOTION, BUTTON_NONE,
1602                                                                                                                                   mouse_pos, pressure,modifier)) == Smach::RESULT_ACCEPT)
1603                         return true;
1604
1605                 break;
1606
1607         case GDK_BUTTON_RELEASE:
1608         {
1609                 bool ret(false);
1610
1611                 if(dragging==DRAG_GUIDE)
1612                 {
1613                         dragging=DRAG_NONE;
1614                         save_meta_data();
1615                         return true;
1616                 }
1617                 else
1618                 if(dragging==DRAG_DUCK)
1619                 {
1620                         synfigapp::Action::PassiveGrouper grouper(instance.get(),"Move");
1621                         dragging=DRAG_NONE;
1622                         //translate_selected_ducks(mouse_pos);
1623                         set_axis_lock(false);
1624
1625                         try{
1626                         get_canvas_view()->duck_refresh_flag=false;
1627                         get_canvas_view()->duck_refresh_needed=false;
1628                         const bool drag_did_anything(end_duck_drag());
1629                         get_canvas_view()->duck_refresh_flag=true;
1630                         if(!drag_did_anything)
1631                         {
1632                                 // if we originally clicked on a selected duck ...
1633                                 if(clicked_duck)
1634                                 {
1635                                         // ... and CTRL is pressed, then just toggle the clicked duck
1636                                         //     otherwise make the clicked duck the only selected duck
1637                                         if(modifier&GDK_CONTROL_MASK)
1638                                                 unselect_duck(clicked_duck);
1639                                         else
1640                                         {
1641                                                 clear_selected_ducks();
1642                                                 select_duck(clicked_duck);
1643                                         }
1644                                         clicked_duck->signal_user_click(0)();
1645                                 }
1646                         }
1647                         else
1648                         {
1649                                 if(canvas_view->duck_refresh_needed)
1650                                         canvas_view->queue_rebuild_ducks();
1651                                 return true;
1652                         }
1653                         }catch(String)
1654                         {
1655                                 canvas_view->duck_refresh_flag=true;
1656                                 canvas_view->queue_rebuild_ducks();
1657                                 return true;
1658                         }
1659                         //queue_draw();
1660                         clicked_duck=0;
1661
1662                         ret=true;
1663                 }
1664
1665                 if(dragging==DRAG_BOX)
1666                 {
1667                         dragging=DRAG_NONE;
1668                         if((drag_point-mouse_pos).mag()>radius/2.0f)
1669                         {
1670                                 if(canvas_view->get_smach().process_event(EventBox(drag_point,mouse_pos,MouseButton(event->button.button),modifier))==Smach::RESULT_ACCEPT)
1671                                         return true;
1672
1673                                 // when dragging a box around some ducks:
1674                                 // SHIFT selects; CTRL toggles; SHIFT+CTRL unselects; <none> clears all then selects
1675                                 if(modifier&GDK_SHIFT_MASK)
1676                                         select_ducks_in_box(drag_point,mouse_pos);
1677
1678                                 if(modifier&GDK_CONTROL_MASK)
1679                                         toggle_select_ducks_in_box(drag_point,mouse_pos);
1680                                 else if(!(modifier&GDK_SHIFT_MASK))
1681                                 {
1682                                         clear_selected_ducks();
1683                                         select_ducks_in_box(drag_point,mouse_pos);
1684                                 }
1685                                 ret=true;
1686                         }
1687                         else
1688                         {
1689                                 if(allow_layer_clicks)
1690                                 {
1691                                         Layer::Handle layer(get_canvas()->find_layer(drag_point));
1692                                         //if(layer)
1693                                         {
1694                                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_LEFT,mouse_pos,modifier))==Smach::RESULT_OK)
1695                                                         signal_layer_selected_(layer);
1696                                                 ret=true;
1697                                         }
1698                                 }
1699                                 else
1700                                 {
1701                                         signal_user_click(0)(mouse_pos);
1702                                 }
1703                         }
1704                 }
1705
1706                 dragging=DRAG_NONE;
1707
1708                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_UP,MouseButton(event->button.button),mouse_pos,pressure,modifier))==Smach::RESULT_ACCEPT)
1709                         ret=true;
1710
1711                 return ret;
1712         }
1713                 break;
1714         case GDK_SCROLL:
1715         {
1716                 // Handle a mouse scrolling event like Xara Xtreme and
1717                 // Inkscape:
1718
1719                 // Scroll up/down: scroll up/down
1720                 // Shift + scroll up/down: scroll left/right
1721                 // Control + scroll up/down: zoom in/out
1722
1723                 if(modifier&GDK_CONTROL_MASK)
1724                 {
1725
1726                         // The zoom is performed while preserving the pointer
1727                         // position as a fixed point (similarly to Xara Xtreme and
1728                         // Inkscape).
1729
1730                         // The strategy used below is to scroll to the updated
1731                         // position, then zoom. This is easy to implement within
1732                         // the present architecture, but has the disadvantage of
1733                         // triggering multiple visible refreshes. Note: 1.25 is
1734                         // the hard wired ratio in zoom_in()/zoom_out(). The
1735                         // variable "drift" compensates additional inaccuracies in
1736                         // the zoom. There is also an additional minus sign for
1737                         // the inverted y coordinates.
1738
1739                         // FIXME: One might want to figure out where in the code
1740                         // this empirical drift is been introduced.
1741
1742                         const synfig::Point scroll_point(get_scrollx_adjustment()->get_value(),get_scrolly_adjustment()->get_value());
1743                         const double drift = 0.052;
1744
1745                         switch(event->scroll.direction)
1746                         {
1747                                 case GDK_SCROLL_UP:
1748                                 case GDK_SCROLL_RIGHT:
1749                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1.25-(1+drift)));
1750                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1.25-(1+drift)));
1751                                         zoom_in();
1752                                         break;
1753                                 case GDK_SCROLL_DOWN:
1754                                 case GDK_SCROLL_LEFT:
1755                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1/1.25-(1+drift)));
1756                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1/1.25-(1+drift)));
1757                                         zoom_out();
1758                                         break;
1759                                 default:
1760                                         break;
1761                         }
1762                 }
1763                 else if(modifier&GDK_SHIFT_MASK)
1764                 {
1765                         // Scroll in either direction by 20 pixels. Ideally, the
1766                         // amount of pixels per scrolling event should be
1767                         // configurable. Xara Xtreme currently uses an (hard
1768                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1769
1770                         const int scroll_pixel = 20;
1771
1772                         switch(event->scroll.direction)
1773                         {
1774                                 case GDK_SCROLL_UP:
1775                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1776                                         break;
1777                                 case GDK_SCROLL_DOWN:
1778                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1779                                         break;
1780                                 case GDK_SCROLL_LEFT:
1781                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1782                                         break;
1783                                 case GDK_SCROLL_RIGHT:
1784                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1785                                         break;
1786                                 default:
1787                                         break;
1788                         }
1789                 }
1790                 else
1791                 {
1792                         // Scroll in either direction by 20 pixels. Ideally, the
1793                         // amount of pixels per scrolling event should be
1794                         // configurable. Xara Xtreme currently uses an (hard
1795                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1796
1797                         const int scroll_pixel = 20;
1798
1799                         switch(event->scroll.direction)
1800                         {
1801                                 case GDK_SCROLL_UP:
1802                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1803                                         break;
1804                                 case GDK_SCROLL_DOWN:
1805                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1806                                         break;
1807                                 case GDK_SCROLL_LEFT:
1808                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1809                                         break;
1810                                 case GDK_SCROLL_RIGHT:
1811                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1812                                         break;
1813                                 default:
1814                                         break;
1815                         }
1816                 }
1817         }
1818                 break;
1819         default:
1820                 break;
1821         }
1822                 return false;
1823 }
1824
1825 bool
1826 WorkArea::on_hruler_event(GdkEvent */*event*/)
1827 {
1828 /*
1829         switch(event->type)
1830     {
1831         case GDK_BUTTON_PRESS:
1832                 if(dragging==DRAG_NONE)
1833                 {
1834                         dragging=DRAG_GUIDE;
1835                         curr_guide=get_guide_list_y().insert(get_guide_list_y().begin());
1836                         curr_guide_is_x=false;
1837                 }
1838                 return true;
1839                 break;
1840
1841         case GDK_MOTION_NOTIFY:
1842                 // Guide movement
1843                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1844                 {
1845                         double y,x;
1846                         if(event->button.axes)
1847                         {
1848                                 x=(event->button.axes[0]);
1849                                 y=(event->button.axes[1]);
1850                         }
1851                         else
1852                         {
1853                                 x=event->button.x;
1854                                 y=event->button.y;
1855                         }
1856
1857                         if(isnan(y) || isnan(x))
1858                                 return false;
1859
1860                         *curr_guide=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)))[1];
1861
1862                         queue_draw();
1863                 }
1864                 return true;
1865                 break;
1866
1867         case GDK_BUTTON_RELEASE:
1868                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1869                 {
1870                         dragging=DRAG_NONE;
1871                         get_guide_list_y().erase(curr_guide);
1872                 }
1873                 break;
1874                 return true;
1875         default:
1876                 break;
1877         }
1878 */
1879         return false;
1880 }
1881
1882 bool
1883 WorkArea::on_vruler_event(GdkEvent */*event*/)
1884 {
1885 /*
1886         switch(event->type)
1887     {
1888         case GDK_BUTTON_PRESS:
1889                 if(dragging==DRAG_NONE)
1890                 {
1891                         dragging=DRAG_GUIDE;
1892                         curr_guide=get_guide_list_x().insert(get_guide_list_x().begin());
1893                         curr_guide_is_x=true;
1894                 }
1895                 return true;
1896                 break;
1897         case GDK_BUTTON_RELEASE:
1898                 if(dragging==DRAG_GUIDE && curr_guide_is_x==true)
1899                 {
1900                         dragging=DRAG_NONE;
1901                         get_guide_list_x().erase(curr_guide);
1902                 }
1903                 break;
1904                 return true;
1905         default:
1906                 break;
1907         }
1908 */
1909         return false;
1910 }
1911
1912
1913 void
1914 WorkArea::refresh_dimension_info()
1915 {
1916         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1917
1918         canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1919         canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1920
1921         pw=canvaswidth/w;
1922         ph=canvasheight/h;
1923
1924         scrollx_adjustment.set_page_increment(abs(get_grid_size()[0]));
1925         scrollx_adjustment.set_step_increment(abs(pw));
1926         scrollx_adjustment.set_lower(-abs(canvaswidth));
1927         scrollx_adjustment.set_upper(abs(canvaswidth));
1928         scrolly_adjustment.set_lower(-abs(canvasheight));
1929         scrolly_adjustment.set_upper(abs(canvasheight));
1930         scrolly_adjustment.set_step_increment(abs(ph));
1931         scrolly_adjustment.set_page_increment(abs(get_grid_size()[1]));
1932
1933
1934
1935         if(drawing_area->get_width()<=0 || drawing_area->get_height()<=0 || w==0 || h==0)
1936                 return;
1937
1938         const synfig::Point focus_point(get_focus_point());
1939         const synfig::Real x(focus_point[0]/pw+drawing_area->get_width()/2-w/2);
1940         const synfig::Real y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
1941
1942         window_tl[0]=rend_desc.get_tl()[0]-pw*x;
1943         window_br[0]=rend_desc.get_br()[0]+pw*(drawing_area->get_width()-x-w);
1944
1945         window_tl[1]=rend_desc.get_tl()[1]-ph*y;
1946         window_br[1]=rend_desc.get_br()[1]+ph*(drawing_area->get_height()-y-h);
1947
1948         hruler->property_lower()=Distance(window_tl[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1949         hruler->property_upper()=Distance(window_br[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1950         vruler->property_lower()=Distance(window_tl[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1951         vruler->property_upper()=Distance(window_br[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1952
1953         view_window_changed();
1954 }
1955
1956
1957 synfig::Point
1958 WorkArea::screen_to_comp_coords(synfig::Point pos)const
1959 {
1960         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1961         //synfig::Vector::value_type canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1962         //synfig::Vector::value_type canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1963         //synfig::Vector::value_type pw=canvaswidth/w;
1964         //synfig::Vector::value_type ph=canvasheight/h;
1965         Vector focus_point=get_focus_point();
1966         synfig::Vector::value_type x=focus_point[0]/pw+drawing_area->get_width()/2-w/2;
1967         synfig::Vector::value_type y=focus_point[1]/ph+drawing_area->get_height()/2-h/2;
1968
1969         return rend_desc.get_tl()-synfig::Point(pw*x,ph*y)+synfig::Point(pw*pos[0],ph*pos[1]);
1970 }
1971
1972 synfig::Point
1973 WorkArea::comp_to_screen_coords(synfig::Point /*pos*/)const
1974 {
1975         synfig::warning("WorkArea::comp_to_screen_coords: Not yet implemented");
1976         return synfig::Point();
1977 }
1978
1979 int
1980 WorkArea::next_unrendered_tile(int refreshes)const
1981 {
1982         //assert(!tile_book.empty());
1983         if(tile_book.empty())
1984                 return -1;
1985
1986         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1987
1988         const synfig::Vector focus_point(get_focus_point());
1989
1990         // Calculate the window coordinates of the top-left
1991         // corner of the canvas.
1992         const synfig::Vector::value_type
1993                 x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
1994                 y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
1995
1996         int div = low_res_pixel_size;
1997         const int width_in_tiles(w/tile_w+((low_resolution?((w/div)%(tile_w/div)):(w%tile_w))?1:0));
1998         const int height_in_tiles(h/tile_h+(h%tile_h?1:0));
1999
2000         int
2001                 u(0),v(0),
2002                 u1(int(-x/tile_w)),
2003                 v1(int(-y/tile_h)),
2004                 u2(int((-x+drawing_area->get_width())/tile_w+1)),
2005                 v2(int((-y+drawing_area->get_height())/tile_h+1));
2006
2007         if(u2>width_in_tiles)u2=width_in_tiles;
2008         if(v2>height_in_tiles)v2=height_in_tiles;
2009         if(u1<0)u1=0;
2010         if(v1<0)v1=0;
2011
2012         int last_good_tile(-1);
2013
2014         for(v=v1;v<v2;v++)
2015                 for(u=u1;u<u2;u++)
2016                 {
2017                         int index(v*width_in_tiles+u);
2018                         if(tile_book[index].second<refreshes)
2019                         {
2020                                 last_good_tile=index;
2021                                 if(rand()%8==0)
2022                                         return index;
2023                         }
2024                 }
2025         return last_good_tile;
2026 }
2027
2028 /*
2029 template <typename F, typename T=WorkAreaRenderer, typename R=typename F::result_type>
2030 class handle2ptr_t : public std::unary_function<typename etl::handle<T>,R>
2031 {
2032 private:
2033         F func;
2034 public:
2035         handle2ptr_t(const F &func):func(func) { };
2036
2037         R operator()(typename etl::handle<T> x) { return func(*x); }
2038 };
2039
2040 template <typename F>
2041 handle2ptr_t<F>
2042 handle2ptr(F func)
2043 {
2044         return handle2ptr_t<F>(func);
2045 }
2046         for_each(
2047                 renderer_set_.begin(),
2048                 renderer_set_.end(),
2049                 handle2ptr(
2050                         sigc::bind(
2051                                 sigc::bind(
2052                                         sigc::mem_fun(
2053                                                 &WorkAreaRenderer::render_vfunc
2054                                         ),
2055                                         Gdk::Rectangle(event->area)
2056                                 ),
2057                                 drawing_area->get_window()
2058                         )
2059                 )
2060         );
2061 */
2062
2063 bool
2064 WorkArea::refresh(GdkEventExpose*event)
2065 {
2066         assert(get_canvas());
2067
2068         drawing_area->get_window()->clear();
2069
2070         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2071
2072         const synfig::Vector focus_point(get_focus_point());
2073
2074         // Update the old focus point
2075         last_focus_point=focus_point;
2076
2077         // Draw out the renderables
2078         {
2079                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
2080                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
2081                 {
2082                         if((*iter)->get_enabled())
2083                                 (*iter)->render_vfunc(
2084                                         drawing_area->get_window(),
2085                                         Gdk::Rectangle(&event->area)
2086                                 );
2087                 }
2088         }
2089
2090         // Calculate the window coordinates of the top-left
2091         // corner of the canvas.
2092         //const synfig::Vector::value_type
2093         //      x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2094         //      y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2095
2096         //const synfig::Vector::value_type window_startx(window_tl[0]);
2097         //const synfig::Vector::value_type window_endx(window_br[0]);
2098         //const synfig::Vector::value_type window_starty(window_tl[1]);
2099         //const synfig::Vector::value_type window_endy(window_br[1]);
2100
2101         Glib::RefPtr<Gdk::GC> gc=Gdk::GC::create(drawing_area->get_window());
2102
2103         // If we are in animate mode, draw a red border around the screen
2104         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2105         {
2106 // #define USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2107 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2108                 // This method of drawing the red border doesn't work on any
2109                 // Gtk theme which uses the crux-engine, hcengine, industrial,
2110                 // mist, or ubuntulooks engine, such as the default ubuntu
2111                 // 'Human' theme.
2112                 drawing_frame->modify_bg(Gtk::STATE_NORMAL,Gdk::Color("#FF0000"));
2113 #else
2114                 // So let's do it in a more primitive fashion.
2115                 gc->set_rgb_fg_color(Gdk::Color("#FF0000"));
2116                 gc->set_line_attributes(1,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
2117                 drawing_area->get_window()->draw_rectangle(
2118                         gc,
2119                         false,  // Fill?
2120                         0,0,    // x,y
2121                         drawing_area->get_width()-1,drawing_area->get_height()-1); // w,h
2122 #endif
2123         }
2124 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2125         else
2126                 drawing_frame->unset_bg(Gtk::STATE_NORMAL);
2127 #endif
2128
2129         previous_focus=get_focus_point();
2130
2131         return true;
2132 }
2133
2134 void
2135 WorkArea::done_rendering()
2136 {
2137 /*
2138         assert(buffer);
2139         assert(w>0);
2140         assert(h>0);
2141         pix_buf=Gdk::Pixbuf::create_from_data(
2142                 buffer, // pointer to the data
2143                 Gdk::COLORSPACE_RGB, // the colorspace
2144                 true, // has alpha?
2145                 8, // bits per sample
2146                 w,      // width
2147                 h,      // height
2148                 w*bpp); // stride (pitch)
2149         assert(pix_buf);
2150 */
2151 }
2152
2153
2154 void
2155 WorkArea::set_quality(int x)
2156 {
2157         if(x==quality)
2158                 return;
2159         quality=x;
2160         queue_render_preview();
2161 }
2162
2163 void
2164 WorkArea::set_low_res_pixel_size(int x)
2165 {
2166         if(x==low_res_pixel_size)
2167                 return;
2168         low_res_pixel_size=x;
2169         queue_render_preview();
2170 }
2171
2172 namespace studio
2173 {
2174 class WorkAreaProgress : public synfig::ProgressCallback
2175 {
2176         WorkArea *work_area;
2177         ProgressCallback *cb;
2178
2179 public:
2180
2181         WorkAreaProgress(WorkArea *work_area,ProgressCallback *cb):
2182                 work_area(work_area),cb(cb)
2183         {
2184                 assert(cb);
2185         }
2186
2187         virtual bool
2188         task(const std::string &str)
2189         {
2190                 if(work_area->dirty)
2191                         return false;
2192                 return cb->task(str);
2193         }
2194
2195         virtual bool
2196         error(const std::string &err)
2197         {
2198                 if(work_area->dirty)
2199                         return false;
2200                 return cb->error(err);
2201         }
2202
2203         virtual bool
2204         amount_complete(int current, int total)
2205         {
2206                 if(work_area->dirty)
2207                         return false;
2208                 return cb->amount_complete(current,total);
2209         }
2210 };
2211 }
2212
2213 bool
2214 studio::WorkArea::async_update_preview()
2215 {
2216         if (get_updating())
2217         {
2218                 stop_updating();
2219                 queue_render_preview();
2220                 return false;
2221         }
2222
2223         async_renderer=0;
2224
2225         queued=false;
2226         canceled_=false;
2227         get_canvas_view()->reset_cancel_status();
2228
2229         // This object will mark us as busy until
2230         // we are done.
2231         //studio::App::Busy busy;
2232
2233         //WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2234         //synfig::ProgressCallback *cb=&callback;
2235
2236         if(!is_visible())return false;
2237
2238         /*
2239         // If we are queued to render the scene at the next idle
2240         // go ahead and de-queue it.
2241         if(render_idle_func_id)
2242         {
2243                 g_source_remove(render_idle_func_id);
2244                 //queued=false;
2245                 render_idle_func_id=0;
2246         }
2247         */
2248
2249         dirty=false;
2250         get_canvas_view()->reset_cancel_status();
2251
2252         //bool ret=false;
2253         RendDesc desc=get_canvas()->rend_desc();
2254
2255         int w=(int)(desc.get_w()*zoom);
2256         int h=(int)(desc.get_h()*zoom);
2257
2258         // ensure that the size we draw is at least one pixel in each dimension
2259         int min_size = low_resolution ? low_res_pixel_size : 1;
2260         if (w < min_size) w = min_size;
2261         if (h < min_size) h = min_size;
2262
2263         // Setup the description parameters
2264         desc.set_antialias(1);
2265         desc.set_time(cur_time);
2266
2267         set_rend_desc(desc);
2268
2269         // Create the render target
2270         handle<Target> target;
2271
2272         // if we have lots of pixels to render and the tile renderer isn't disabled, use it
2273         int div;
2274         div = low_resolution ? low_res_pixel_size : 1;
2275         if (w*h > 240*div*135*div && !getenv("SYNFIG_DISABLE_TILE_RENDER"))
2276         {
2277                 // do a tile render
2278                 handle<WorkAreaTarget> trgt(new class WorkAreaTarget(this,w,h));
2279
2280                 trgt->set_rend_desc(&desc);
2281                 trgt->set_onion_skin(get_onion_skin());
2282                 target=trgt;
2283         }
2284         else
2285         {
2286                 // do a scanline render
2287                 handle<WorkAreaTarget_Full> trgt(new class WorkAreaTarget_Full(this,w,h));
2288
2289                 trgt->set_rend_desc(&desc);
2290                 trgt->set_onion_skin(get_onion_skin());
2291                 target=trgt;
2292         }
2293
2294         // We can rest assured that our time has already
2295         // been set, so there is no need to have to
2296         // recalculate that over again.
2297         // UPDATE: This is kind of needless with
2298         // the way that time is handled now in SYNFIG.
2299         //target->set_avoid_time_sync(true);
2300         async_renderer=new AsyncRenderer(target);
2301         async_renderer->signal_finished().connect(
2302                 sigc::mem_fun(this,&WorkArea::async_update_finished)
2303         );
2304
2305         rendering=true;
2306         async_renderer->start();
2307
2308         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2309
2310         rendering=true;
2311         cb->task(_("Rendering..."));
2312         rendering=true;
2313
2314         return true;
2315 }
2316
2317 void
2318 studio::WorkArea::async_update_finished()
2319 {
2320         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2321
2322         rendering=false;
2323
2324         if(!async_renderer)
2325                 return;
2326
2327         // If we completed successfully, then
2328         // we aren't dirty anymore
2329         if(async_renderer->has_success())
2330         {
2331                 dirty=false;
2332                 //queued=false;
2333                 cb->task(_("Idle"));
2334         }
2335         else
2336         {
2337                 dirty=true;
2338                 cb->task(_("Render Failed"));
2339         }
2340         //get_canvas_view()->reset_cancel_status();
2341         done_rendering();
2342 }
2343
2344 bool
2345 studio::WorkArea::sync_update_preview()
2346 {
2347         //      const Time &time(cur_time);
2348
2349         canceled_=false;
2350         get_canvas_view()->reset_cancel_status();
2351
2352         async_renderer=0;
2353
2354 again:
2355         // This object will mark us as busy until
2356         // we are done.
2357         studio::App::Busy busy;
2358
2359         WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2360         synfig::ProgressCallback *cb=&callback;
2361
2362         // We don't want to render if we are already rendering
2363         if(rendering)
2364         {
2365                 dirty=true;
2366                 return false;
2367         }
2368
2369         if(!is_visible())return false;
2370         get_canvas()->set_time(get_time());
2371         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2372         signal_rendering()();
2373
2374         // If we are queued to render the scene at the next idle
2375         // go ahead and de-queue it.
2376         if(render_idle_func_id)
2377         {
2378                 g_source_remove(render_idle_func_id);
2379                 //queued=false;
2380                 render_idle_func_id=0;
2381         }
2382         // Start rendering
2383         rendering=true;
2384
2385         dirty=false;
2386         get_canvas_view()->reset_cancel_status();
2387
2388         RendDesc desc=get_canvas()->rend_desc();
2389         //newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
2390
2391         int w=(int)(desc.get_w()*zoom);
2392         int h=(int)(desc.get_h()*zoom);
2393
2394         // Setup the description parameters
2395         desc.set_antialias(1);
2396         desc.set_time(cur_time);
2397         //desc.set_wh(w,h);
2398
2399         set_rend_desc(desc);
2400
2401         // Create the render target
2402         handle<WorkAreaTarget> target(new class WorkAreaTarget(this,w,h));
2403
2404         target->set_rend_desc(&desc);
2405
2406         // We can rest assured that our time has already
2407         // been set, so there is no need to have to
2408         // recalculate that over again.
2409         target->set_avoid_time_sync(true);
2410
2411         if(cb)
2412                 cb->task(strprintf(_("Rendering canvas %s..."),get_canvas()->get_name().c_str()));
2413
2414         bool ret = target->render(cb);
2415
2416         if(!ret && !get_canvas_view()->get_cancel_status() && dirty)
2417         {
2418                 rendering=false;
2419                 //canceled_=true;
2420                 goto again;
2421         }
2422         if(get_canvas_view()->get_cancel_status())
2423                 canceled_=true;
2424
2425         if(cb)
2426         {
2427                 if(ret)
2428                         cb->task(_("Idle"));
2429                 else
2430                         cb->task(_("Render Failed"));
2431                 cb->amount_complete(0,1);
2432         }
2433
2434         // Refresh the work area to make sure that
2435         // it is being displayed correctly
2436         drawing_area->queue_draw();
2437
2438         // If we completed successfully, then
2439         // we aren't dirty anymore
2440         if(ret)
2441         {
2442                 dirty=false;
2443                 //queued=false;
2444         }
2445         else dirty=true;
2446         rendering=false;
2447         //get_canvas_view()->reset_cancel_status();
2448         done_rendering();
2449         return ret;
2450 }
2451
2452 void
2453 studio::WorkArea::async_render_preview(synfig::Time time)
2454 {
2455         cur_time=time;
2456         //tile_book.clear();
2457
2458         refreshes+=5;
2459         if(!is_visible())return;
2460
2461         get_canvas()->set_time(get_time());
2462         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2463         signal_rendering()();
2464
2465         async_update_preview();
2466 }
2467 void
2468 WorkArea::async_render_preview()
2469 {
2470         return async_render_preview(get_canvas_view()->get_time());
2471 }
2472
2473 bool
2474 studio::WorkArea::sync_render_preview(synfig::Time time)
2475 {
2476         cur_time=time;
2477         //tile_book.clear();
2478         refreshes+=5;
2479         if(!is_visible())return false;
2480         return sync_update_preview();
2481 }
2482
2483 bool
2484 WorkArea::sync_render_preview()
2485 {
2486         return sync_render_preview(get_canvas_view()->get_time());
2487 }
2488
2489 void
2490 WorkArea::sync_render_preview_hook()
2491 {
2492         sync_render_preview(get_canvas_view()->get_time());
2493 }
2494
2495 void
2496 WorkArea::queue_scroll()
2497 {
2498 //      const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2499
2500         const synfig::Point focus_point(get_focus_point());
2501
2502         const synfig::Real
2503                 new_x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2504                 new_y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2505
2506         const synfig::Real
2507                 old_x(last_focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2508                 old_y(last_focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2509
2510         // If the coordinates didn't change, we shouldn't queue a draw
2511         if(old_x==new_x && old_y==new_y)
2512                 return;
2513
2514         const int
2515                 dx(round_to_int(old_x)-round_to_int(new_x)),
2516                 dy(round_to_int(old_y)-round_to_int(new_y));
2517
2518         drawing_area->get_window()->scroll(-dx,-dy);
2519
2520         if (timecode_width && timecode_height)
2521         {
2522                 drawing_area->queue_draw_area(4,       4,    4+timecode_width,    4+timecode_height);
2523                 drawing_area->queue_draw_area(4-dx, 4-dy, 4-dx+timecode_width, 4-dy+timecode_height);
2524         }
2525
2526 #ifndef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2527         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2528         {
2529                 int maxx = drawing_area->get_width()-1;
2530                 int maxy = drawing_area->get_height()-1;
2531
2532                 if (dx > 0)
2533                 {
2534                         drawing_area->queue_draw_area(      0, 0,       1, maxy);
2535                         drawing_area->queue_draw_area(maxx-dx, 0, maxx-dx, maxy);
2536                 }
2537                 else if (dx < 0)
2538                 {
2539                         drawing_area->queue_draw_area(   maxx, 0,    maxx, maxy);
2540                         drawing_area->queue_draw_area(    -dx, 0,     -dx, maxy);
2541                 }
2542                 if (dy > 0)
2543                 {
2544                         drawing_area->queue_draw_area(0,       0, maxx,       1);
2545                         drawing_area->queue_draw_area(0, maxy-dy, maxx, maxy-dy);
2546                 }
2547                 else if (dy < 0)
2548                 {
2549                         drawing_area->queue_draw_area(0,    maxy, maxx,    maxy);
2550                         drawing_area->queue_draw_area(0,     -dy, maxx,     -dy);
2551                 }
2552         }
2553 #endif // USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2554
2555         last_focus_point=focus_point;
2556 }
2557
2558 void
2559 studio::WorkArea::zoom_in()
2560 {
2561         set_zoom(zoom*1.25);
2562 }
2563
2564 void
2565 studio::WorkArea::zoom_out()
2566 {
2567         set_zoom(zoom/1.25);
2568 }
2569
2570 void
2571 studio::WorkArea::zoom_fit()
2572 {
2573         // This really doesn't zoom to fit. Bug.
2574         zoom_norm();
2575 }
2576
2577 void
2578 studio::WorkArea::zoom_norm()
2579 {
2580         if(zoom==1.0)
2581                 set_zoom(prev_zoom);
2582         else
2583         {
2584                 prev_zoom=zoom;
2585                 set_zoom(1.0f);
2586         }
2587 }
2588
2589 gboolean
2590 studio::WorkArea::__render_preview(gpointer data)
2591 {
2592         WorkArea *work_area(static_cast<WorkArea*>(data));
2593
2594         // there's no point anyone trying to cancel the timer now - it's gone off already
2595         work_area->render_idle_func_id = 0;
2596
2597         work_area->queued=false;
2598         work_area->async_render_preview(work_area->get_canvas_view()->get_time());
2599
2600         return 0;
2601 }
2602
2603 void
2604 studio::WorkArea::queue_render_preview()
2605 {
2606         //synfig::info("queue_render_preview(): called for %s", get_canvas_view()->get_time().get_string().c_str());
2607
2608         if(queued==true)
2609         {
2610                 return;
2611                 //synfig::info("queue_render_preview(): already queued, unqueuing");
2612 /*              if(render_idle_func_id)
2613                         g_source_remove(render_idle_func_id);
2614                 render_idle_func_id=0;
2615                 queued=false;
2616 */
2617                 //async_renderer=0;
2618         }
2619
2620         if(dirty_trap_enabled)
2621         {
2622                 dirty_trap_queued++;
2623                 return;
2624         }
2625
2626         int queue_time=50;
2627
2628         if(rendering)
2629                 queue_time+=250;
2630
2631
2632         if(queued==false)
2633         {
2634                 //synfig::info("queue_render_preview(): (re)queuing...");
2635                 //render_idle_func_id=g_idle_add_full(G_PRIORITY_DEFAULT,__render_preview,this,NULL);
2636                 render_idle_func_id=g_timeout_add_full(
2637                         G_PRIORITY_DEFAULT,     // priority -
2638                         queue_time,                     // interval - the time between calls to the function, in milliseconds (1/1000ths of a second)
2639                         __render_preview,       // function - function to call
2640                         this,                           // data     - data to pass to function
2641                         NULL);                          // notify   - function to call when the idle is removed, or NULL
2642                 queued=true;
2643         }
2644 /*      else if(rendering)
2645         {
2646                 refreshes+=5;
2647                 dirty=true;
2648                 queue_draw();
2649         }
2650 */
2651 }
2652
2653 DirtyTrap::DirtyTrap(WorkArea *work_area):work_area(work_area)
2654 {
2655         work_area->dirty_trap_enabled=true;
2656
2657         work_area->dirty_trap_queued=0;
2658 }
2659
2660 DirtyTrap::~DirtyTrap()
2661 {
2662         work_area->dirty_trap_enabled=false;
2663         if(work_area->dirty_trap_queued)
2664                 work_area->queue_render_preview();
2665 }
2666
2667 void
2668 studio::WorkArea::queue_draw_preview()
2669 {
2670         drawing_area->queue_draw();
2671 }
2672
2673 void
2674 studio::WorkArea::set_cursor(const Gdk::Cursor& x)
2675 {
2676         drawing_area->get_window()->set_cursor(x);
2677 }
2678 void
2679 studio::WorkArea::set_cursor(Gdk::CursorType x)
2680 {
2681         drawing_area->get_window()->set_cursor(Gdk::Cursor(x));
2682 }
2683
2684 #include "iconcontroller.h"
2685
2686 void
2687 studio::WorkArea::refresh_cursor()
2688 {
2689 //      set_cursor(IconController::get_tool_cursor(canvas_view->get_smach().get_state_name(),drawing_area->get_window()));
2690 }
2691
2692 void
2693 studio::WorkArea::reset_cursor()
2694 {
2695         drawing_area->get_window()->set_cursor(Gdk::Cursor(Gdk::TOP_LEFT_ARROW));
2696 //      set_cursor(Gdk::TOP_LEFT_ARROW);
2697 }
2698
2699 void
2700 studio::WorkArea::set_zoom(float z)
2701 {
2702         z=max(1.0f/128.0f,min(128.0f,z));
2703         if(z==zoom)
2704                 return;
2705         zoom = z;
2706         refresh_dimension_info();
2707         /*if(async_renderer)
2708         {
2709                 async_renderer->stop();
2710                 async_renderer=0;
2711         }*/
2712         refreshes+=5;
2713         async_update_preview();
2714         //queue_render_preview();
2715 }
2716
2717 void
2718 WorkArea::set_selected_value_node(etl::loose_handle<synfig::ValueNode> x)
2719 {
2720         if(x!=selected_value_node_)
2721         {
2722                 selected_value_node_=x;
2723                 queue_draw();
2724         }
2725 }
2726
2727 void
2728 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x)
2729 {
2730         renderer_set_.insert(x);
2731         x->set_work_area(this);
2732         queue_draw();
2733 }
2734
2735 void
2736 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x, int priority)
2737 {
2738         x->set_priority(priority);
2739         insert_renderer(x);
2740 }
2741
2742 void
2743 WorkArea::erase_renderer(const etl::handle<WorkAreaRenderer> &x)
2744 {
2745         x->set_work_area(0);
2746         renderer_set_.erase(x);
2747         queue_draw();
2748 }
2749
2750 void
2751 WorkArea::resort_render_set()
2752 {
2753         std::set<etl::handle<WorkAreaRenderer> > tmp(
2754                 renderer_set_.begin(),
2755                 renderer_set_.end()
2756         );
2757         renderer_set_.swap(tmp);
2758         queue_draw();
2759 }