synfig-studio/src/gtkmm/workarea.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file workarea.cpp
   3 **      \brief Template Header
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2006 Yue Shi Lai
  10 **      Copyright (c) 2007, 2008 Chris Moore
  11 **
  12 **      This package is free software; you can redistribute it and/or
  13 **      modify it under the terms of the GNU General Public License as
  14 **      published by the Free Software Foundation; either version 2 of
  15 **      the License, or (at your option) any later version.
  16 **
  17 **      This package is distributed in the hope that it will be useful,
  18 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20 **      General Public License for more details.
  21 **      \endlegal
  22 */
  23 /* ========================================================================= */
  24
  25 /* === H E A D E R S ======================================================= */
  26
  27 #ifdef USING_PCH
  28 #       include "pch.h"
  29 #else
  30 #ifdef HAVE_CONFIG_H
  31 #       include <config.h>
  32 #endif
  33
  34 #include <sigc++/adaptors/hide.h>
  35
  36 #include "workarea.h"
  37 #include "canvasview.h"
  38 #include "app.h"
  39 #include <gtkmm/window.h>
  40 #include <gtkmm/image.h>
  41 #include <gtkmm/drawingarea.h>
  42 #include <gtkmm/ruler.h>
  43 #include <gtkmm/arrow.h>
  44 #include <gtkmm/image.h>
  45 #include <gtkmm/scrollbar.h>
  46 #include <cmath>
  47 #include <sigc++/retype_return.h>
  48 #include <sigc++/retype.h>
  49 #include <sigc++/hide.h>
  50 #include <ETL/misc>
  51
  52 #include <synfig/target_scanline.h>
  53 #include <synfig/target_tile.h>
  54 #include <synfig/surface.h>
  55 #include <synfig/valuenode_composite.h>
  56 #include <synfigapp/canvasinterface.h>
  57 #include "event_mouse.h"
  58 #include "event_layerclick.h"
  59 #include "widget_color.h"
  60 #include <synfig/distance.h>
  61 #include "workarearenderer.h"
  62
  63 #include "renderer_canvas.h"
  64 #include "renderer_grid.h"
  65 #include "renderer_guides.h"
  66 #include "renderer_timecode.h"
  67 #include "renderer_ducks.h"
  68 #include "renderer_dragbox.h"
  69 #include "renderer_bbox.h"
  70 #include "asyncrenderer.h"
  71 #include <gtkmm/frame.h>
  72
  73 #include <synfig/mutex.h>
  74
  75 #include "general.h"
  76
  77 #endif
  78
  79 /* === U S I N G =========================================================== */
  80
  81 using namespace std;
  82 using namespace etl;
  83 using namespace synfig;
  84 using namespace studio;
  85
  86 /* === M A C R O S ========================================================= */
  87
  88 #ifndef stratof
  89 #define stratof(X) (atof((X).c_str()))
  90 #define stratoi(X) (atoi((X).c_str()))
  91 #endif
  92
  93
  94 /* === G L O B A L S ======================================================= */
  95
  96 /* === C L A S S E S ======================================================= */
  97
  98 class studio::WorkAreaTarget : public synfig::Target_Tile
  99 {
 100 public:
 101         WorkArea *workarea;
 102         bool low_res;
 103         int w,h;
 104         int real_tile_w,real_tile_h;
 105         //std::vector<Glib::RefPtr<Gdk::Pixbuf> >::iterator tile_iter;
 106
 107         int twindow_start, twindow_width, twindow_height, twindow_pad;
 108         int refresh_id;
 109
 110         bool onionskin;
 111         bool onion_first_tile;
 112         int onion_layers;
 113
 114         std::list<synfig::Time> onion_skin_queue;
 115
 116         synfig::Mutex mutex;
 117
 118         void set_onion_skin(bool x, int *onions)
 119         {
 120                 onionskin=x;
 121
 122                 Time time(rend_desc().get_time_start());
 123
 124                 if(!onionskin)
 125                         return;
 126                 onion_skin_queue.push_back(time);
 127
 128                 try
 129                 {
 130                 Time thistime=time;
 131                 for(int i=0; i<onions[0]; i++)
 132                         {
 133                                 Time keytime=get_canvas()->keyframe_list().find_prev(thistime)->get_time();
 134                                 onion_skin_queue.push_back(keytime);
 135                                 thistime=keytime;
 136                         }
 137                 }
 138                 catch(...)
 139                 {  }
 140
 141                 try
 142                 {
 143                 Time thistime=time;
 144                 for(int i=0; i<onions[1]; i++)
 145                         {
 146                                 Time keytime=get_canvas()->keyframe_list().find_next(thistime)->get_time();
 147                                 onion_skin_queue.push_back(keytime);
 148                                 thistime=keytime;
 149                         }
 150                 }
 151                 catch(...)
 152                 {  }
 153
 154                 onion_layers=onion_skin_queue.size();
 155
 156                 onion_first_tile=false;
 157         }
 158 public:
 159
 160         WorkAreaTarget(WorkArea *workarea,int w, int h):
 161                 workarea(workarea),
 162                 low_res(workarea->get_low_resolution_flag()),
 163                 w(w),
 164                 h(h),
 165                 real_tile_w(workarea->tile_w),
 166                 real_tile_h(workarea->tile_h),
 167                 refresh_id(workarea->refreshes),
 168                 onionskin(false),
 169                 onion_layers(0)
 170         {
 171                 //set_remove_alpha();
 172                 //set_avoid_time_sync();
 173                 set_clipping(true);
 174                 if(low_res)
 175                 {
 176                         int div = workarea->get_low_res_pixel_size();
 177                         set_tile_w(workarea->tile_w/div);
 178                         set_tile_h(workarea->tile_h/div);
 179                 }
 180                 else
 181                 {
 182                         set_tile_w(workarea->tile_w);
 183                         set_tile_h(workarea->tile_h);
 184                 }
 185                 set_canvas(workarea->get_canvas());
 186                 set_quality(workarea->get_quality());
 187         }
 188
 189         ~WorkAreaTarget()
 190         {
 191                 workarea->queue_draw();
 192         }
 193
 194         virtual bool set_rend_desc(synfig::RendDesc *newdesc)
 195         {
 196                 assert(workarea);
 197                 newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
 198                 if(low_res) {
 199                         int div = workarea->get_low_res_pixel_size();
 200                         newdesc->set_wh(w/div,h/div);
 201                 }
 202                 else
 203                         newdesc->set_wh(w,h);
 204
 205                 if(
 206                                 workarea->get_w()!=w
 207                         ||      workarea->get_h()!=h
 208                 ) workarea->set_wh(w,h,4);
 209
 210                 workarea->full_frame=false;
 211
 212                 desc=*newdesc;
 213                 return true;
 214         }
 215
 216         virtual int total_tiles()const
 217         {
 218                 int tw(rend_desc().get_w()/get_tile_w());
 219                 int th(rend_desc().get_h()/get_tile_h());
 220                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 221                 if(rend_desc().get_h()%get_tile_h()!=0)th++;
 222                 return tw*th;
 223         }
 224
 225         virtual int next_frame(Time& time)
 226         {
 227                 synfig::Mutex::Lock lock(mutex);
 228
 229                 if(!onionskin)
 230                         return synfig::Target_Tile::next_frame(time);
 231
 232                 onion_first_tile=(onion_layers==(signed)onion_skin_queue.size());
 233
 234                 if(!onion_skin_queue.empty())
 235                 {
 236                         time=onion_skin_queue.front();
 237                         onion_skin_queue.pop_front();
 238                 }
 239                 else
 240                         return 0;
 241
 242                 return onion_skin_queue.size()+1;
 243         }
 244
 245         virtual int next_tile(int& x, int& y)
 246         {
 247                 synfig::Mutex::Lock lock(mutex);
 248                 //if(workarea->tile_queue.empty()) return 0;
 249
 250                 //int curr_tile(workarea->tile_queue.front());
 251                 //workarea->tile_queue.pop_front();
 252                 int curr_tile(workarea->next_unrendered_tile(refresh_id-onion_skin_queue.size()));
 253                 if(curr_tile<0)
 254                         return 0;
 255
 256                 // Width of the image(in tiles)
 257                 int tw(rend_desc().get_w()/get_tile_w());
 258                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 259
 260                 y=(curr_tile/tw)*get_tile_w();
 261                 x=(curr_tile%tw)*get_tile_h();
 262
 263                 // Mark this tile as "up-to-date"
 264                 if(onionskin)
 265                         workarea->tile_book[curr_tile].second=refresh_id-onion_skin_queue.size();
 266                 else
 267                         workarea->tile_book[curr_tile].second=refresh_id;
 268
 269                 return total_tiles()-curr_tile+1;
 270         }
 271
 272
 273         virtual bool start_frame(synfig::ProgressCallback */*cb*/)
 274         {
 275                 synfig::Mutex::Lock lock(mutex);
 276
 277                 int tw(rend_desc().get_w()/get_tile_w());
 278                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 279                 int th(rend_desc().get_h()/get_tile_h());
 280                 if(rend_desc().get_h()%get_tile_h()!=0)th++;
 281
 282                 twindow_start=0;
 283                 twindow_width=tw;
 284                 twindow_height=th;
 285                 twindow_pad=0;
 286
 287                 workarea->tile_book.resize(total_tiles());
 288                 //tile_iter=workarea->tile_book.begin()+twindow_start;
 289                 return true;
 290         }
 291
 292         static void free_buff(const guint8 *x) { free(const_cast<guint8*>(x)); }
 293
 294         virtual bool add_tile(const synfig::Surface &surface, int x, int y)
 295         {
 296                 synfig::Mutex::Lock lock(mutex);
 297                 assert(surface);
 298
 299                 PixelFormat pf(PF_RGB);
 300
 301                 const int total_bytes(get_tile_w()*get_tile_h()*synfig::channels(pf));
 302
 303                 unsigned char *buffer((unsigned char*)malloc(total_bytes));
 304
 305                 if(!surface || !buffer)
 306                         return false;
 307                 {
 308                         unsigned char *dest(buffer);
 309                         const Color *src(surface[0]);
 310                         int w(get_tile_w());
 311                         int h(get_tile_h());
 312                         int x(surface.get_w()*surface.get_h());
 313                         //if(low_res) {
 314                         //      int div = workarea->get_low_res_pixel_size();
 315                         //      w/=div,h/=div;
 316                         //}
 317                         Color dark(0.6,0.6,0.6);
 318                         Color lite(0.8,0.8,0.8);
 319                         for(int i=0;i<x;i++)
 320                                 dest=Color2PixelFormat(
 321                                         Color::blend(
 322                                                 (*(src++)),
 323                                                 ((i/surface.get_w())*8/h+(i%surface.get_w())*8/w)&1?dark:lite,
 324                                                 1.0f
 325                                         ).clamped(),
 326                                         pf,dest,App::gamma
 327                                 );
 328                 }
 329
 330                 x/=get_tile_w();
 331                 y/=get_tile_h();
 332                 int tw(rend_desc().get_w()/get_tile_w());
 333                 if(rend_desc().get_w()%get_tile_w()!=0)tw++;
 334                 unsigned int index=y*tw+x;
 335
 336                 // Sanity check
 337                 if(index>workarea->tile_book.size())
 338                         return false;
 339
 340                 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
 341
 342                 pixbuf=Gdk::Pixbuf::create_from_data(
 343                         buffer, // pointer to the data
 344                         Gdk::COLORSPACE_RGB, // the colorspace
 345                         ((pf&PF_A)==PF_A), // has alpha?
 346                         8, // bits per sample
 347                         surface.get_w(),        // width
 348                         surface.get_h(),        // height
 349                         surface.get_w()*synfig::channels(pf), // stride (pitch)
 350                         sigc::ptr_fun(&WorkAreaTarget::free_buff)
 351                 );
 352
 353                 if(low_res)
 354                 {
 355                         // We need to scale up
 356                         int div = workarea->get_low_res_pixel_size();
 357                         pixbuf=pixbuf->scale_simple(
 358                                 surface.get_w()*div,
 359                                 surface.get_h()*div,
 360                                 Gdk::INTERP_NEAREST
 361                         );
 362                 }
 363
 364                 if(!onionskin || onion_first_tile || !workarea->tile_book[index].first)
 365                 {
 366                         workarea->tile_book[index].first=pixbuf;
 367                 }
 368                 else
 369                 {
 370                         pixbuf->composite(
 371                                 workarea->tile_book[index].first, // Dest
 372                                 0,//int dest_x
 373                                 0,//int dest_y
 374                                 pixbuf->get_width(), // dest width
 375                                 pixbuf->get_height(), // dest_height,
 376                                 0, // double offset_x
 377                                 0, // double offset_y
 378                                 1, // double scale_x
 379                                 1, // double scale_y
 380                                 Gdk::INTERP_NEAREST, // interp
 381                                 255/(onion_layers-onion_skin_queue.size()+1) //int overall_alpha
 382                         );
 383                 }
 384
 385                 //if(index%2)
 386                         workarea->queue_draw();
 387                 assert(workarea->tile_book[index].first);
 388                 return true;
 389         }
 390
 391         virtual void end_frame()
 392         {
 393                 //workarea->queue_draw();
 394         }
 395 };
 396
 397
 398 class studio::WorkAreaTarget_Full : public synfig::Target_Scanline
 399 {
 400 public:
 401         WorkArea *workarea;
 402         bool low_res;
 403         int w,h;
 404         int real_tile_w,real_tile_h;
 405         //std::vector<Glib::RefPtr<Gdk::Pixbuf> >::iterator tile_iter;
 406
 407         int twindow_start, twindow_width, twindow_height, twindow_pad;
 408         int refresh_id;
 409
 410         bool onionskin;
 411         bool onion_first_tile;
 412         int onion_layers;
 413
 414         Surface surface;
 415
 416         std::list<synfig::Time> onion_skin_queue;
 417
 418         void set_onion_skin(bool x, int *onions)
 419         {
 420                 onionskin=x;
 421
 422                 Time time(rend_desc().get_time_start());
 423
 424                 if(!onionskin)
 425                         return;
 426                 onion_skin_queue.push_back(time);
 427                 //onion_skin_queue.push_back(time-1);
 428                 //onion_skin_queue.push_back(time+1);
 429                 try
 430                 {
 431                 Time thistime=time;
 432                 for(int i=0; i<onions[0]; i++)
 433                         {
 434                                 Time keytime=get_canvas()->keyframe_list().find_prev(thistime)->get_time();
 435                                 onion_skin_queue.push_back(keytime);
 436                                 thistime=keytime;
 437                         }
 438                 }
 439                 catch(...)
 440                 {  }
 441
 442                 try
 443                 {
 444                 Time thistime=time;
 445                 for(int i=0; i<onions[1]; i++)
 446                         {
 447                                 Time keytime=get_canvas()->keyframe_list().find_next(thistime)->get_time();
 448                                 onion_skin_queue.push_back(keytime);
 449                                 thistime=keytime;
 450                         }
 451                 }
 452                 catch(...)
 453                 {  }
 454
 455                 onion_layers=onion_skin_queue.size();
 456
 457                 onion_first_tile=false;
 458         }
 459 public:
 460
 461         WorkAreaTarget_Full(WorkArea *workarea,int w, int h):
 462                 workarea(workarea),
 463                 low_res(workarea->get_low_resolution_flag()),
 464                 w(w),
 465                 h(h),
 466                 refresh_id(workarea->refreshes),
 467                 onionskin(false),
 468                 onion_layers(0)
 469         {
 470                 set_canvas(workarea->get_canvas());
 471                 set_quality(workarea->get_quality());
 472         }
 473
 474         ~WorkAreaTarget_Full()
 475         {
 476         }
 477
 478         virtual bool set_rend_desc(synfig::RendDesc *newdesc)
 479         {
 480                 assert(workarea);
 481                 newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
 482                 if(low_res)
 483                 {
 484                         int div = workarea->get_low_res_pixel_size();
 485                         newdesc->set_wh(w/div,h/div);
 486                 }
 487                 else
 488                         newdesc->set_wh(w,h);
 489
 490                 if(
 491                                 workarea->get_w()!=w
 492                         ||      workarea->get_h()!=h
 493                 ) workarea->set_wh(w,h,4);
 494
 495                 surface.set_wh(newdesc->get_w(),newdesc->get_h());
 496
 497                 desc=*newdesc;
 498                 workarea->full_frame=true;
 499                 workarea->tile_book.resize(1);
 500                 return true;
 501         }
 502
 503         virtual int next_frame(Time& time)
 504         {
 505                 // Mark this tile as "up-to-date"
 506                 if(onionskin)
 507                         workarea->tile_book[0].second=refresh_id-onion_skin_queue.size();
 508                 else
 509                         workarea->tile_book[0].second=refresh_id;
 510
 511                 if(!onionskin)
 512                         return synfig::Target_Scanline::next_frame(time);
 513
 514                 onion_first_tile=(onion_layers==(signed)onion_skin_queue.size());
 515
 516                 if(!onion_skin_queue.empty())
 517                 {
 518                         time=onion_skin_queue.front();
 519                         onion_skin_queue.pop_front();
 520                 }
 521                 else
 522                         return 0;
 523                 return onion_skin_queue.size()+1;
 524         }
 525
 526
 527         virtual bool start_frame(synfig::ProgressCallback */*cb*/)
 528         {
 529                 return true;
 530         }
 531
 532         virtual Color * start_scanline(int scanline)
 533         {
 534                 return surface[scanline];
 535         }
 536
 537         virtual bool end_scanline()
 538         {
 539                 return true;
 540         }
 541
 542         static void free_buff(const guint8 *x) { free(const_cast<guint8*>(x)); }
 543
 544         virtual void end_frame()
 545         {
 546                 assert(surface);
 547
 548                 PixelFormat pf(PF_RGB);
 549
 550                 const int total_bytes(surface.get_w()*surface.get_h()*synfig::channels(pf));
 551
 552                 unsigned char *buffer((unsigned char*)malloc(total_bytes));
 553
 554                 if(!surface || !buffer)
 555                         return;
 556                 {
 557                         unsigned char *dest(buffer);
 558                         const Color *src(surface[0]);
 559                         int w(surface.get_w());
 560                         //int h(surface.get_h());
 561                         int x(surface.get_w()*surface.get_h());
 562                         //if(low_res) {
 563                         //      int div = workarea->get_low_res_pixel_size();
 564                         //      w/=div,h/=div;
 565                         //}
 566                         Color dark(0.6,0.6,0.6);
 567                         Color lite(0.8,0.8,0.8);
 568                         int tw=workarea->tile_w;
 569                         int th=workarea->tile_h;
 570                         if(low_res)
 571                         {
 572                                 int div = workarea->get_low_res_pixel_size();
 573                                 tw/=div;
 574                                 th/=div;
 575                         }
 576                         for(int i=0;i<x;i++)
 577                                 dest=Color2PixelFormat(
 578                                         Color::blend(
 579                                                 (*(src++)),
 580                                                 ((i/w)*8/th+(i%w)*8/tw)&1?dark:lite,
 581                                                 1.0f
 582                                         ).clamped(),
 583                                         pf,
 584                                         dest,
 585                                         App::gamma
 586                                 );
 587                 }
 588
 589                 Glib::RefPtr<Gdk::Pixbuf> pixbuf;
 590
 591                 pixbuf=Gdk::Pixbuf::create_from_data(
 592                         buffer, // pointer to the data
 593                         Gdk::COLORSPACE_RGB, // the colorspace
 594                         ((pf&PF_A)==PF_A), // has alpha?
 595                         8, // bits per sample
 596                         surface.get_w(),        // width
 597                         surface.get_h(),        // height
 598                         surface.get_w()*synfig::channels(pf), // stride (pitch)
 599                         sigc::ptr_fun(&WorkAreaTarget::free_buff)
 600                 );
 601
 602                 if(low_res)
 603                 {
 604                         // We need to scale up
 605                         int div = workarea->get_low_res_pixel_size();
 606                         pixbuf=pixbuf->scale_simple(
 607                                 surface.get_w()*div,
 608                                 surface.get_h()*div,
 609                                 Gdk::INTERP_NEAREST
 610                         );
 611                 }
 612
 613                 int index=0;
 614
 615                 if(!onionskin || onion_first_tile || !workarea->tile_book[index].first)
 616                 {
 617                         workarea->tile_book[index].first=pixbuf;
 618                 }
 619                 else
 620                 {
 621                         pixbuf->composite(
 622                                 workarea->tile_book[index].first, // Dest
 623                                 0,//int dest_x
 624                                 0,//int dest_y
 625                                 pixbuf->get_width(), // dest width
 626                                 pixbuf->get_height(), // dest_height,
 627                                 0, // double offset_x
 628                                 0, // double offset_y
 629                                 1, // double scale_x
 630                                 1, // double scale_y
 631                                 Gdk::INTERP_NEAREST, // interp
 632                                 255/(onion_layers-onion_skin_queue.size()+1) //int overall_alpha
 633                         );
 634                 }
 635
 636                 workarea->queue_draw();
 637                 assert(workarea->tile_book[index].first);
 638         }
 639 };
 640
 641
 642
 643
 644 /* === M E T H O D S ======================================================= */
 645
 646
 647 WorkArea::WorkArea(etl::loose_handle<synfigapp::CanvasInterface> canvas_interface):
 648         Gtk::Table(3, 3, false), /* 3 columns by 3 rows*/
 649         canvas_interface(canvas_interface),
 650         canvas(canvas_interface->get_canvas()),
 651         scrollx_adjustment(0,-4,4,0.01,0.1),
 652         scrolly_adjustment(0,-4,4,0.01,0.1),
 653         w(TILE_SIZE),
 654         h(TILE_SIZE),
 655         last_event_time(0),
 656         progresscallback(0),
 657         dragging(DRAG_NONE),
 658         show_grid(false),
 659         tile_w(TILE_SIZE),
 660         tile_h(TILE_SIZE),
 661         timecode_width(0),
 662         timecode_height(0)
 663 {
 664         show_guides=true;
 665         curr_input_device=0;
 666         full_frame=false;
 667         allow_duck_clicks=true;
 668         allow_layer_clicks=true;
 669         render_idle_func_id=0;
 670         zoom=prev_zoom=1.0;
 671         quality=10;
 672         low_res_pixel_size=2;
 673         rendering=false;
 674         canceled_=false;
 675         low_resolution=true;
 676         pw=0.001;
 677         ph=0.001;
 678         last_focus_point=Point(0,0);
 679         onion_skin=false;
 680         onion_skins[0]=0;
 681         onion_skins[1]=0;
 682         queued=false;
 683         dirty_trap_enabled=false;
 684         solid_lines=true;
 685
 686         dirty_trap_queued=0;
 687
 688         meta_data_lock=false;
 689
 690         insert_renderer(new Renderer_Canvas,    000);
 691         insert_renderer(new Renderer_Grid,              100);
 692         insert_renderer(new Renderer_Guides,    200);
 693         insert_renderer(new Renderer_Ducks,             300);
 694         insert_renderer(new Renderer_BBox,              399);
 695         insert_renderer(new Renderer_Dragbox,   400);
 696         insert_renderer(new Renderer_Timecode,  500);
 697
 698         signal_duck_selection_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 699         signal_strokes_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 700         signal_grid_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::queue_draw));
 701         signal_grid_changed().connect(sigc::mem_fun(*this,&studio::WorkArea::save_meta_data));
 702         signal_sketch_saved().connect(sigc::mem_fun(*this,&studio::WorkArea::save_meta_data));
 703
 704         // Not that it really makes a difference... (setting this to zero, that is)
 705         refreshes=0;
 706
 707         drawing_area=manage(new class Gtk::DrawingArea());
 708         drawing_area->show();
 709         drawing_area->set_extension_events(Gdk::EXTENSION_EVENTS_ALL);
 710
 711         drawing_frame=manage(new Gtk::Frame);
 712         drawing_frame->add(*drawing_area);
 713         //drawing_frame->set_shadow_type(Gtk::SHADOW_NONE);
 714         //drawing_frame->property_border_width()=5;
 715         //drawing_frame->modify_fg(Gtk::STATE_NORMAL,Gdk::Color("#00ffff"));
 716         //drawing_frame->modify_base(Gtk::STATE_NORMAL,Gdk::Color("#ff00ff"));
 717         /*drawing_frame->modify_fg(Gtk::STATE_ACTIVE,Gdk::Color("#00ffff"));
 718         drawing_frame->modify_base(Gtk::STATE_ACTIVE,Gdk::Color("#ff00ff"));
 719         drawing_frame->modify_bg(Gtk::STATE_ACTIVE,Gdk::Color("#00ff00"));
 720         drawing_frame->modify_fg(Gtk::STATE_INSENSITIVE,Gdk::Color("#00ffff"));
 721         drawing_frame->modify_base(Gtk::STATE_INSENSITIVE,Gdk::Color("#ff00ff"));
 722         drawing_frame->modify_bg(Gtk::STATE_INSENSITIVE,Gdk::Color("#00ff00"));
 723         drawing_frame->modify_fg(Gtk::STATE_SELECTED,Gdk::Color("#00ffff"));
 724         drawing_frame->modify_base(Gtk::STATE_SELECTED,Gdk::Color("#ff00ff"));
 725         drawing_frame->modify_bg(Gtk::STATE_SELECTED,Gdk::Color("#00ff00"));
 726         */
 727         //drawing_frame->set_state(Gtk::STATE_NORMAL);
 728
 729         drawing_frame->show();
 730
 731         attach(*drawing_frame, 1, 2, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 732
 733         Gtk::IconSize iconsize=Gtk::IconSize::from_name("synfig-small_icon");
 734
 735
 736         // Create the vertical and horizontal rulers
 737         vruler = manage(new class Gtk::VRuler());
 738         hruler = manage(new class Gtk::HRuler());
 739         vruler->set_metric(Gtk::PIXELS);
 740         hruler->set_metric(Gtk::PIXELS);
 741         vruler->show();
 742         hruler->show();
 743         attach(*vruler, 0, 1, 1, 2, Gtk::SHRINK|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 744         attach(*hruler, 1, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::SHRINK|Gtk::FILL, 0, 0);
 745         hruler->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_hruler_event));
 746         vruler->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_vruler_event));
 747         hruler->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 748         vruler->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 749
 750         // Create the menu button
 751         menubutton=manage(new class Gtk::Button());
 752         Gtk::Arrow *arrow1 = manage(new class Gtk::Arrow(Gtk::ARROW_RIGHT, Gtk::SHADOW_OUT));
 753         menubutton->add(*arrow1);
 754         menubutton->show_all();
 755         menubutton->signal_pressed().connect(sigc::mem_fun(*this, &WorkArea::popup_menu));
 756         attach(*menubutton, 0, 1, 0, 1, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
 757
 758         Gtk::HBox *hbox = manage(new class Gtk::HBox(false, 0));
 759
 760         Gtk::VScrollbar *vscrollbar1 = manage(new class Gtk::VScrollbar(*get_scrolly_adjustment()));
 761         Gtk::HScrollbar *hscrollbar1 = manage(new class Gtk::HScrollbar(*get_scrollx_adjustment()));
 762         vscrollbar1->show();
 763         attach(*vscrollbar1, 2, 3, 1, 2, Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 764
 765         ZoomDial *zoomdial=manage(new class ZoomDial(iconsize));
 766         zoomdial->signal_zoom_in().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_in));
 767         zoomdial->signal_zoom_out().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_out));
 768         zoomdial->signal_zoom_fit().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_fit));
 769         zoomdial->signal_zoom_norm().connect(sigc::mem_fun(*this, &studio::WorkArea::zoom_norm));
 770
 771         hbox->pack_end(*hscrollbar1, Gtk::PACK_EXPAND_WIDGET,0);
 772         hscrollbar1->show();
 773         hbox->pack_start(*zoomdial, Gtk::PACK_SHRINK,0);
 774         zoomdial->show();
 775
 776         attach(*hbox, 0, 2, 2, 3, Gtk::EXPAND|Gtk::FILL, Gtk::SHRINK|Gtk::FILL, 0, 0);
 777         hbox->show();
 778
 779         drawing_area->add_events(Gdk::KEY_PRESS_MASK | Gdk::KEY_RELEASE_MASK);
 780         add_events(Gdk::KEY_PRESS_MASK);
 781         drawing_area->add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
 782         drawing_area->add_events(Gdk::BUTTON1_MOTION_MASK | Gdk::BUTTON2_MOTION_MASK |Gdk::POINTER_MOTION_MASK);
 783
 784         // ----------------- Attach signals
 785
 786         drawing_area->signal_expose_event().connect(sigc::mem_fun(*this, &WorkArea::refresh));
 787         drawing_area->signal_event().connect(sigc::mem_fun(*this, &WorkArea::on_drawing_area_event));
 788         drawing_area->signal_size_allocate().connect(sigc::hide(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info)));
 789
 790
 791
 792         canvas_interface->signal_rend_desc_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 793         // When either of the scrolling adjustments change, then redraw.
 794         get_scrollx_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::queue_scroll));
 795         get_scrolly_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::queue_scroll));
 796         get_scrollx_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 797         get_scrolly_adjustment()->signal_value_changed().connect(sigc::mem_fun(*this, &WorkArea::refresh_dimension_info));
 798
 799         get_canvas()->signal_meta_data_changed("grid_size").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 800         get_canvas()->signal_meta_data_changed("grid_snap").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 801         get_canvas()->signal_meta_data_changed("grid_show").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 802         get_canvas()->signal_meta_data_changed("guide_show").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 803         get_canvas()->signal_meta_data_changed("guide_x").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 804         get_canvas()->signal_meta_data_changed("guide_y").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 805         get_canvas()->signal_meta_data_changed("onion_skin").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 806         get_canvas()->signal_meta_data_changed("guide_snap").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 807         get_canvas()->signal_meta_data_changed("sketch").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 808         get_canvas()->signal_meta_data_changed("solid_lines").connect(sigc::mem_fun(*this,&WorkArea::load_meta_data));
 809
 810         queued=false;
 811         meta_data_lock=false;
 812         set_focus_point(Point(0,0));
 813
 814
 815         load_meta_data();
 816         // Load sketch
 817         {
 818                 String data(canvas->get_meta_data("sketch"));
 819                 if(!data.empty())
 820                 {
 821                         if(!load_sketch(data))
 822                                 load_sketch(dirname(canvas->get_file_name())+ETL_DIRECTORY_SEPARATOR+basename(data));
 823                 }
 824         }
 825
 826         hruler->property_max_size()=double(10.0);
 827         vruler->property_max_size()=double(10.0);
 828
 829         drawing_area->set_flags(drawing_area->get_flags()|Gtk::CAN_FOCUS);
 830 }
 831
 832 WorkArea::~WorkArea()
 833 {
 834 //      delete [] buffer;
 835
 836         // don't leave the render function queued if we are about to vanish;
 837         // that causes crashes
 838         if(render_idle_func_id)
 839                 render_idle_func_id=0;
 840 }
 841
 842 #ifdef SINGLE_THREADED
 843 bool
 844 WorkArea::get_updating()const
 845 {
 846         return App::single_threaded && async_renderer && async_renderer->updating;
 847 }
 848 #endif
 849
 850 #ifdef SINGLE_THREADED
 851 void
 852 WorkArea::stop_updating(bool cancel)
 853 {
 854         async_renderer->stop();
 855         if (cancel) canceled_=true;
 856 }
 857 #endif
 858
 859 void
 860 WorkArea::save_meta_data()
 861 {
 862         if(meta_data_lock)
 863                 return;
 864         meta_data_lock=true;
 865
 866         Vector s(get_grid_size());
 867         canvas_interface->set_meta_data("grid_size",strprintf("%f %f",s[0],s[1]));
 868         canvas_interface->set_meta_data("grid_snap",get_grid_snap()?"1":"0");
 869         canvas_interface->set_meta_data("guide_snap",get_guide_snap()?"1":"0");
 870         canvas_interface->set_meta_data("guide_show",get_show_guides()?"1":"0");
 871         canvas_interface->set_meta_data("grid_show",show_grid?"1":"0");
 872         canvas_interface->set_meta_data("onion_skin",onion_skin?"1":"0");
 873         {
 874                 String data;
 875                 GuideList::const_iterator iter;
 876                 for(iter=get_guide_list_x().begin();iter!=get_guide_list_x().end();++iter)
 877                 {
 878                         if(!data.empty())
 879                                 data+=' ';
 880                         data+=strprintf("%f",*iter);
 881                 }
 882                 if(!data.empty())
 883                         canvas_interface->set_meta_data("guide_x",data);
 884
 885                 data.clear();
 886                 for(iter=get_guide_list_y().begin();iter!=get_guide_list_y().end();++iter)
 887                 {
 888                         if(!data.empty())
 889                                 data+=' ';
 890                         data+=strprintf("%f",*iter);
 891                 }
 892                 if(!data.empty())
 893                         canvas_interface->set_meta_data("guide_y",data);
 894         }
 895
 896         if(get_sketch_filename().size())
 897         {
 898                 if(dirname(canvas->get_file_name())==dirname(get_sketch_filename()))
 899                         canvas_interface->set_meta_data("sketch",basename(get_sketch_filename()));
 900                 else
 901                         canvas_interface->set_meta_data("sketch",get_sketch_filename());
 902         }
 903
 904         meta_data_lock=false;
 905 }
 906
 907 void
 908 WorkArea::load_meta_data()
 909 {
 910         if(meta_data_lock)
 911                 return;
 912         meta_data_lock=true;
 913
 914         String data;
 915
 916         data=canvas->get_meta_data("grid_size");
 917         if(!data.empty())
 918         {
 919                 float gx(get_grid_size()[0]),gy(get_grid_size()[1]);
 920
 921                 String::iterator iter(find(data.begin(),data.end(),' '));
 922                 String tmp(data.begin(),iter);
 923
 924                 if(!tmp.empty())
 925                         gx=stratof(tmp);
 926                 else
 927                         synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 928
 929                 if(iter==data.end())
 930                         tmp.clear();
 931                 else
 932                         tmp=String(iter+1,data.end());
 933
 934                 if(!tmp.empty())
 935                         gy=stratof(tmp);
 936                 else
 937                         synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 938
 939                 set_grid_size(Vector(gx,gy));
 940         }
 941
 942         data=canvas->get_meta_data("grid_show");
 943         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 944                 show_grid=true;
 945         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 946                 show_grid=false;
 947
 948         data=canvas->get_meta_data("solid_lines");
 949         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 950                 solid_lines=true;
 951         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 952                 solid_lines=false;
 953
 954         data=canvas->get_meta_data("guide_show");
 955         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 956                 show_guides=true;
 957         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 958                 show_guides=false;
 959
 960         data=canvas->get_meta_data("grid_snap");
 961         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 962                 set_grid_snap(true);
 963         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 964                 set_grid_snap(false);
 965
 966         data=canvas->get_meta_data("guide_snap");
 967         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 968                 set_guide_snap(true);
 969         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 970                 set_guide_snap(false);
 971
 972         data=canvas->get_meta_data("onion_skin");
 973         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 974                 set_onion_skin(true);
 975         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 976                 set_onion_skin(false);
 977
 978         data=canvas->get_meta_data("guide_x");
 979         get_guide_list_x().clear();
 980         while(!data.empty())
 981         {
 982                 String::iterator iter(find(data.begin(),data.end(),' '));
 983                 String guide(data.begin(),iter);
 984
 985                 if(!guide.empty())
 986                         get_guide_list_x().push_back(stratof(guide));
 987
 988                 if(iter==data.end())
 989                         data.clear();
 990                 else
 991                         data=String(iter+1,data.end());
 992         }
 993         //sort(get_guide_list_x());
 994
 995         data=canvas->get_meta_data("guide_y");
 996         get_guide_list_y().clear();
 997         while(!data.empty())
 998         {
 999                 String::iterator iter(find(data.begin(),data.end(),' '));
1000                 String guide(data.begin(),iter);
1001
1002                 if(!guide.empty())
1003                         get_guide_list_y().push_back(stratof(guide));
1004
1005                 if(iter==data.end())
1006                         data.clear();
1007                 else
1008                         data=String(iter+1,data.end());
1009         }
1010         //sort(get_guide_list_y());
1011
1012         meta_data_lock=false;
1013         queue_draw();
1014 }
1015
1016 void
1017 WorkArea::set_onion_skin(bool x)
1018 {
1019         if(onion_skin==x)
1020                 return;
1021         onion_skin=x;
1022         save_meta_data();
1023         queue_render_preview();
1024         signal_onion_skin_changed()();
1025 }
1026
1027 bool
1028 WorkArea::get_onion_skin()const
1029 {
1030         return onion_skin;
1031 }
1032
1033 void WorkArea::set_onion_skins(int *onions)
1034 {
1035         onion_skins[0]=onions[0];
1036         onion_skins[1]=onions[1];
1037         if(onion_skin)
1038                 queue_render_preview();
1039 }
1040
1041 void
1042 WorkArea::enable_grid()
1043 {
1044         show_grid=true;
1045         save_meta_data();
1046         queue_draw();
1047 }
1048
1049 void
1050 WorkArea::disable_grid()
1051 {
1052         show_grid=false;
1053         save_meta_data();
1054         queue_draw();
1055 }
1056
1057 void
1058 WorkArea::set_show_guides(bool x)
1059 {
1060         show_guides=x;
1061         save_meta_data();
1062         queue_draw();
1063 }
1064
1065 void
1066 WorkArea::toggle_grid()
1067 {
1068         show_grid=!show_grid;
1069         save_meta_data();
1070         queue_draw();
1071 }
1072
1073 void
1074 WorkArea::set_low_resolution_flag(bool x)
1075 {
1076         if(x!=low_resolution)
1077         {
1078                 low_resolution=x;
1079                 queue_render_preview();
1080         }
1081 }
1082
1083 void
1084 WorkArea::toggle_low_resolution_flag()
1085 {
1086         set_low_resolution_flag(!get_low_resolution_flag());
1087 }
1088
1089 void
1090 WorkArea::popup_menu()
1091 {
1092         signal_popup_menu()();
1093 }
1094
1095 void
1096 WorkArea::set_grid_size(const synfig::Vector &s)
1097 {
1098         Duckmatic::set_grid_size(s);
1099         save_meta_data();
1100         queue_draw();
1101 }
1102
1103 void
1104 WorkArea::set_focus_point(const synfig::Point &point)
1105 {
1106         // These next three lines try to ensure that we place the
1107         // focus on a pixel boundary
1108         /*Point adjusted(point[0]/abs(get_pw()),point[1]/abs(get_ph()));
1109         adjusted[0]=(abs(adjusted[0]-floor(adjusted[0]))<0.5)?floor(adjusted[0])*abs(get_pw()):ceil(adjusted[0])*abs(get_ph());
1110         adjusted[1]=(abs(adjusted[1]-floor(adjusted[1]))<0.5)?floor(adjusted[1])*abs(get_ph()):ceil(adjusted[1])*abs(get_ph());
1111         */
1112         const synfig::Point& adjusted(point);
1113
1114         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1115         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1116         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1117
1118         get_scrollx_adjustment()->set_value(adjusted[0]*x_factor);
1119         get_scrolly_adjustment()->set_value(adjusted[1]*y_factor);
1120 }
1121
1122 synfig::Point
1123 WorkArea::get_focus_point()const
1124 {
1125         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1126         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1127         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1128
1129         return synfig::Point(get_scrollx_adjustment()->get_value()*x_factor, get_scrolly_adjustment()->get_value()*y_factor);
1130 }
1131
1132 bool
1133 WorkArea::set_wh(int W, int H,int CHAN)
1134 {
1135         // If our size is already set, don't set it again
1136         if(W==w && H==h && CHAN==bpp)
1137         {
1138                 return true;
1139         }
1140         if(W<=0 || H<=0 || CHAN<=0)
1141                 return false;
1142
1143         assert(W>0);
1144         assert(H>0);
1145         assert(CHAN>0);
1146
1147         // Set all of the parameters
1148         w=W;
1149         h=H;
1150         bpp=CHAN;
1151
1152         refresh_dimension_info();
1153
1154         tile_book.clear();
1155
1156         return true;
1157 }
1158
1159 bool
1160 WorkArea::on_key_press_event(GdkEventKey* event)
1161 {
1162         if(get_selected_ducks().empty())
1163                 return false;
1164
1165         Real multiplier(1.0);
1166
1167         if(Gdk::ModifierType(event->state)&GDK_SHIFT_MASK)
1168                 multiplier=10.0;
1169
1170         Vector nudge;
1171         switch(event->keyval)
1172         {
1173                 case GDK_Left:
1174                         nudge=Vector(-pw,0);
1175                         break;
1176                 case GDK_Right:
1177                         nudge=Vector(pw,0);
1178                         break;
1179                 case GDK_Up:
1180                         nudge=Vector(0,-ph);
1181                         break;
1182                 case GDK_Down:
1183                         nudge=Vector(0,ph);
1184                         break;
1185                 default:
1186                         return false;
1187                         break;
1188         }
1189
1190         synfigapp::Action::PassiveGrouper grouper(instance.get(),_("Nudge"));
1191
1192         // Grid snap does not apply to nudging
1193         bool grid_snap_holder(get_grid_snap());
1194         bool guide_snap_holder(get_guide_snap());
1195         set_grid_snap(false);
1196
1197         try {
1198                 start_duck_drag(get_selected_duck()->get_trans_point());
1199                 translate_selected_ducks(get_selected_duck()->get_trans_point()+nudge*multiplier);
1200                 end_duck_drag();
1201         }
1202         catch(String)
1203         {
1204                 canvas_view->duck_refresh_flag=true;
1205                 canvas_view->queue_rebuild_ducks();
1206         }
1207
1208         set_grid_snap(grid_snap_holder);
1209         set_guide_snap(guide_snap_holder);
1210
1211         return true;
1212 }
1213
1214 bool
1215 WorkArea::on_drawing_area_event(GdkEvent *event)
1216 {
1217         synfig::Point mouse_pos;
1218     float bezier_click_pos;
1219         const float radius((abs(pw)+abs(ph))*4);
1220         int button_pressed(0);
1221         float pressure(0);
1222         bool is_mouse(false);
1223         Gdk::ModifierType modifier(Gdk::ModifierType(0));
1224
1225         // Handle input stuff
1226         if(
1227                 event->any.type==GDK_MOTION_NOTIFY ||
1228                 event->any.type==GDK_BUTTON_PRESS ||
1229                 event->any.type==GDK_2BUTTON_PRESS ||
1230                 event->any.type==GDK_3BUTTON_PRESS ||
1231                 event->any.type==GDK_BUTTON_RELEASE
1232         )
1233         {
1234                 GdkDevice *device;
1235                 if(event->any.type==GDK_MOTION_NOTIFY)
1236                 {
1237                         device=event->motion.device;
1238                         modifier=Gdk::ModifierType(event->motion.state);
1239                 }
1240                 else
1241                 {
1242                         device=event->button.device;
1243                         modifier=Gdk::ModifierType(event->button.state);
1244                         drawing_area->grab_focus();
1245                 }
1246
1247                 // Make sure we recognize the device
1248                 if(curr_input_device)
1249                 {
1250                         if(curr_input_device!=device)
1251                         {
1252                                 assert(device);
1253                                 curr_input_device=device;
1254                                 signal_input_device_changed()(curr_input_device);
1255                         }
1256                 }
1257                 else if(device)
1258                 {
1259                         curr_input_device=device;
1260                         signal_input_device_changed()(curr_input_device);
1261                 }
1262
1263                 assert(curr_input_device);
1264
1265                 // Calculate the position of the
1266                 // input device in canvas coordinates
1267                 // and the buttons
1268                 if(!event->button.axes)
1269                 {
1270                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->button.x,event->button.y)));
1271                         button_pressed=event->button.button;
1272                         pressure=1.0f;
1273                         is_mouse=true;
1274                         if(isnan(event->button.x) || isnan(event->button.y))
1275                                 return false;
1276                 }
1277                 else
1278                 {
1279                         double x(event->button.axes[0]);
1280                         double y(event->button.axes[1]);
1281                         if(isnan(x) || isnan(y))
1282                                 return false;
1283
1284                         pressure=event->button.axes[2];
1285                         //synfig::info("pressure=%f",pressure);
1286                         pressure-=0.04f;
1287                         pressure/=1.0f-0.04f;
1288
1289
1290                         assert(!isnan(pressure));
1291
1292                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)));
1293
1294                         button_pressed=event->button.button;
1295
1296                         if(button_pressed==1 && pressure<0 && (event->any.type!=GDK_BUTTON_RELEASE && event->any.type!=GDK_BUTTON_PRESS))
1297                                 button_pressed=0;
1298                         if(pressure<0)
1299                                 pressure=0;
1300
1301                         //if(event->any.type==GDK_BUTTON_PRESS && button_pressed)
1302                         //      synfig::info("Button pressed on input device = %d",event->button.button);
1303
1304                         //if(event->button.axes[2]>0.1)
1305                         //      button_pressed=1;
1306                         //else
1307                         //      button_pressed=0;
1308                 }
1309         }
1310         // GDK mouse scrolling events
1311         else if(event->any.type==GDK_SCROLL)
1312         {
1313                 // GDK information needed to properly interpret mouse
1314                 // scrolling events are: scroll.state, scroll.x/scroll.y, and
1315                 // scroll.direction. The value of scroll.direction will be
1316                 // obtained later.
1317
1318                 modifier=Gdk::ModifierType(event->scroll.state);
1319                 mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->scroll.x,event->scroll.y)));
1320         }
1321
1322         // Handle the renderables
1323         {
1324                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
1325                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
1326                 {
1327                         if((*iter)->get_enabled())
1328                                 if((*iter)->event_vfunc(event))
1329                                 {
1330                                         // Event handled. Return true.
1331                                         return true;
1332                                 }
1333                 }
1334         }
1335
1336         // Event hasn't been handled, pass it down
1337         switch(event->type)
1338     {
1339         case GDK_BUTTON_PRESS:
1340                 {
1341                 switch(button_pressed)
1342                 {
1343                 case 1: // Attempt to click on a duck
1344                 {
1345                         etl::handle<Duck> duck;
1346                         dragging=DRAG_NONE;
1347
1348                         if(allow_duck_clicks)
1349                         {
1350                                 duck=find_duck(mouse_pos,radius);
1351
1352                                 if(duck)
1353                                 {
1354                                         // make a note of whether the duck we click on was selected or not
1355                                         if(duck_is_selected(duck))
1356                                                 clicked_duck=duck;
1357                                         else
1358                                         {
1359                                                 clicked_duck=0;
1360                                                 // if CTRL isn't pressed, clicking an unselected duck will unselect all other ducks
1361                                                 if(!(modifier&GDK_CONTROL_MASK))
1362                                                         clear_selected_ducks();
1363                                                 select_duck(duck);
1364                                         }
1365                                 }
1366                         }
1367                         //else
1368                         //      clear_selected_ducks();
1369
1370
1371
1372                         selected_bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1373                         if(duck)
1374                         {
1375                                 if (!duck->get_editable())
1376                                         return true;
1377
1378                                 //get_selected_duck()->signal_user_click(0)();
1379                                 //if(clicked_duck)clicked_duck->signal_user_click(0)();
1380
1381                                 // if the user is holding shift while clicking on a tangent duck, consider splitting the tangent
1382                                 if (event->motion.state&GDK_SHIFT_MASK && duck->get_type() == Duck::TYPE_TANGENT)
1383                                 {
1384                                         synfigapp::ValueDesc value_desc = duck->get_value_desc();
1385
1386                                         // we have the tangent, but need the vertex - that's the parent
1387                                         if (value_desc.parent_is_value_node()) {
1388                                                 ValueNode_Composite::Handle parent_value_node = value_desc.get_parent_value_node();
1389
1390                                                 // if the tangent isn't split, then split it
1391                                                 if (!((*(parent_value_node->get_link("split")))(get_time()).get(bool())))
1392                                                 {
1393                                                         if (get_canvas_view()->canvas_interface()->
1394                                                                 change_value(synfigapp::ValueDesc(parent_value_node,
1395                                                                                                                                   parent_value_node->get_link_index_from_name("split")),
1396                                                                                          true))
1397                                                         {
1398                                                                 // rebuild the ducks from scratch, so the tangents ducks aren't connected
1399                                                                 get_canvas_view()->rebuild_ducks();
1400
1401                                                                 // reprocess the mouse click
1402                                                                 return on_drawing_area_event(event);
1403                                                         }
1404                                                         else
1405                                                                 return true;
1406                                                 }
1407                                         } else {
1408                                                 // I don't know how to access the vertex from the tangent duck when originally drawing the bline in the bline tool
1409
1410                                                 // synfig::ValueNode::Handle vn = value_desc.get_value_node();
1411                                                 synfig::info("parent isn't value node?  shift-drag-tangent doesn't work in bline tool yet...");
1412                                         }
1413                                 }
1414
1415                                 dragging=DRAG_DUCK;
1416                                 drag_point=mouse_pos;
1417                                 //drawing_area->queue_draw();
1418                                 start_duck_drag(mouse_pos);
1419                                 get_canvas_view()->reset_cancel_status();
1420                                 return true;
1421                         }
1422 // I commented out this section because
1423 // it was causing issues when rotoscoping.
1424 // At the moment, we don't need it, so
1425 // this was the easiest way to fix the problem.
1426 /*
1427                         else
1428                         if(selected_bezier)
1429                         {
1430                                 selected_duck=0;
1431                                 selected_bezier->signal_user_click(0)(bezier_click_pos);
1432                         }
1433 */
1434                         else
1435                         {
1436                                 //clear_selected_ducks();
1437                                 selected_bezier=0;
1438                                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_LEFT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1439                                 {
1440                                         // Check for a guide click
1441                                         GuideList::iterator iter;
1442
1443                                         iter=find_guide_x(mouse_pos,radius);
1444                                         if(iter==get_guide_list_x().end())
1445                                         {
1446                                                 curr_guide_is_x=false;
1447                                                 iter=find_guide_y(mouse_pos,radius);
1448                                         }
1449                                         else
1450                                                 curr_guide_is_x=true;
1451                                         if(iter!=get_guide_list_x().end() && iter!=get_guide_list_y().end())
1452                                         {
1453                                                 dragging=DRAG_GUIDE;
1454                                                 curr_guide=iter;
1455                                                 return true;
1456                                         }
1457
1458
1459                                         // All else fails, try making a selection box
1460                                         dragging=DRAG_BOX;
1461                                         curr_point=drag_point=mouse_pos;
1462                                         return true;
1463                                 }
1464                         }
1465                         break;
1466                 }
1467                 case 2: // Attempt to drag and move the window
1468                 {
1469                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1470                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1471                         if(duck)
1472                                 duck->signal_user_click(1)();
1473                         else
1474                         if(bezier)
1475                                 bezier->signal_user_click(1)(bezier_click_pos);
1476
1477                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_MIDDLE,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1478                         if(is_mouse)
1479                         {
1480                                 dragging=DRAG_WINDOW;
1481                                 drag_point=mouse_pos;
1482                                 signal_user_click(1)(mouse_pos);
1483                         }
1484                         break;
1485                 }
1486                 case 3: // Attempt to either get info on a duck, or open the menu
1487                 {
1488                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1489                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1490
1491                         Layer::Handle layer(get_canvas()->find_layer(mouse_pos));
1492                         if(duck)
1493                         {
1494                                 if(get_selected_ducks().size()<=1)
1495                                         duck->signal_user_click(2)();
1496                                 else
1497                                         canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MULTIPLE_DUCKS_CLICKED,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1498                                 return true;
1499                         }
1500                         else if(bezier)
1501                         {
1502                                 bezier->signal_user_click(2)(bezier_click_pos);
1503                                 return true;
1504                         }
1505                         else if (layer)
1506                         {
1507                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_RIGHT,mouse_pos))==Smach::RESULT_OK)
1508                                         return false;
1509                                 return true;
1510                         }
1511                         else
1512                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1513                         /*
1514                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1515                         {
1516                                 //popup_menu();
1517                                 return true;
1518                         }
1519                         */
1520                         break;
1521                 }
1522                 case 4:
1523                         signal_user_click(3)(mouse_pos);
1524                         break;
1525                 case 5:
1526                         signal_user_click(4)(mouse_pos);
1527                         break;
1528                 default:
1529                         break;
1530                 }
1531                 }
1532                 break;
1533         case GDK_MOTION_NOTIFY:
1534                 curr_point=mouse_pos;
1535
1536                 if(event->motion.time-last_event_time<25)
1537                         return true;
1538                 else
1539                         last_event_time=event->motion.time;
1540
1541                 signal_cursor_moved_();
1542
1543                 // Guide/Duck highlights on hover
1544                 if(dragging==DRAG_NONE)
1545                 {
1546                         GuideList::iterator iter;
1547
1548                         iter=find_guide_x(mouse_pos,radius);
1549                         if(iter==get_guide_list_x().end())
1550                                 iter=find_guide_y(mouse_pos,radius);
1551
1552                         if(iter!=curr_guide)
1553                         {
1554                                 curr_guide=iter;
1555                                 drawing_area->queue_draw();
1556                         }
1557
1558                         etl::handle<Duck> duck;
1559                         duck=find_duck(mouse_pos,radius);
1560                         if(duck!=hover_duck)
1561                         {
1562                                 hover_duck=duck;
1563                                 drawing_area->queue_draw();
1564                         }
1565                 }
1566
1567
1568                 if(dragging==DRAG_DUCK)
1569                 {
1570                         if(canvas_view->get_cancel_status())
1571                         {
1572                                 dragging=DRAG_NONE;
1573                                 canvas_view->queue_rebuild_ducks();
1574                                 return true;
1575                         }
1576                         /*
1577                         Point point((mouse_pos-selected_duck->get_origin())/selected_duck->get_scalar());
1578                         if(get_grid_snap())
1579                         {
1580                                 point[0]=floor(point[0]/grid_size[0]+0.5)*grid_size[0];
1581                                 point[1]=floor(point[1]/grid_size[1]+0.5)*grid_size[1];
1582                         }
1583                         selected_duck->set_point(point);
1584                         */
1585
1586                         //Point p(mouse_pos);
1587
1588                         set_axis_lock(event->motion.state&GDK_SHIFT_MASK);
1589
1590                         translate_selected_ducks(mouse_pos);
1591
1592                         drawing_area->queue_draw();
1593                 }
1594
1595                 if(dragging==DRAG_BOX)
1596                 {
1597                         curr_point=mouse_pos;
1598                         drawing_area->queue_draw();
1599                 }
1600
1601                 if(dragging==DRAG_GUIDE)
1602                 {
1603                         if(curr_guide_is_x)
1604                                 *curr_guide=mouse_pos[0];
1605                         else
1606                                 *curr_guide=mouse_pos[1];
1607                         drawing_area->queue_draw();
1608                 }
1609
1610                 if(dragging!=DRAG_WINDOW)
1611                 {       // Update those triangle things on the rulers
1612                         const synfig::Point point(mouse_pos);
1613                         hruler->property_position()=Distance(point[0],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1614                         vruler->property_position()=Distance(point[1],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1615                 }
1616
1617                 if(dragging == DRAG_WINDOW)
1618                         set_focus_point(get_focus_point() + mouse_pos-drag_point);
1619                 else if (event->motion.state & GDK_BUTTON1_MASK &&
1620                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_LEFT,
1621                                                                                                                                   mouse_pos,pressure,modifier)) == Smach::RESULT_ACCEPT)
1622                         return true;
1623                 else if (event->motion.state & GDK_BUTTON2_MASK &&
1624                                  canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_MIDDLE,
1625                                                                                                                                    mouse_pos, pressure, modifier)) == Smach::RESULT_ACCEPT)
1626                         return true;
1627                 else if (event->motion.state & GDK_BUTTON3_MASK &&
1628                                  canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DRAG, BUTTON_RIGHT,
1629                                                                                                                                    mouse_pos, pressure, modifier)) == Smach::RESULT_ACCEPT)
1630                         return true;
1631                 else if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_MOTION, BUTTON_NONE,
1632                                                                                                                                   mouse_pos, pressure,modifier)) == Smach::RESULT_ACCEPT)
1633                         return true;
1634
1635                 break;
1636
1637         case GDK_BUTTON_RELEASE:
1638         {
1639                 bool ret(false);
1640
1641                 if(dragging==DRAG_GUIDE)
1642                 {
1643                         dragging=DRAG_NONE;
1644                         save_meta_data();
1645                         return true;
1646                 }
1647                 else
1648                 if(dragging==DRAG_DUCK)
1649                 {
1650                         synfigapp::Action::PassiveGrouper grouper(instance.get(),_("Move"));
1651                         dragging=DRAG_NONE;
1652                         //translate_selected_ducks(mouse_pos);
1653                         set_axis_lock(false);
1654
1655                         try{
1656                         get_canvas_view()->duck_refresh_flag=false;
1657                         get_canvas_view()->duck_refresh_needed=false;
1658                         const bool drag_did_anything(end_duck_drag());
1659                         get_canvas_view()->duck_refresh_flag=true;
1660                         if(!drag_did_anything)
1661                         {
1662                                 // if we originally clicked on a selected duck ...
1663                                 if(clicked_duck)
1664                                 {
1665                                         // ... and CTRL is pressed, then just toggle the clicked duck
1666                                         //     otherwise make the clicked duck the only selected duck
1667                                         if(modifier&GDK_CONTROL_MASK)
1668                                                 unselect_duck(clicked_duck);
1669                                         else
1670                                         {
1671                                                 clear_selected_ducks();
1672                                                 select_duck(clicked_duck);
1673                                         }
1674                                         clicked_duck->signal_user_click(0)();
1675                                 }
1676                         }
1677                         else
1678                         {
1679                                 if(canvas_view->duck_refresh_needed)
1680                                         canvas_view->queue_rebuild_ducks();
1681                                 return true;
1682                         }
1683                         }catch(String)
1684                         {
1685                                 canvas_view->duck_refresh_flag=true;
1686                                 canvas_view->queue_rebuild_ducks();
1687                                 return true;
1688                         }
1689                         //queue_draw();
1690                         clicked_duck=0;
1691
1692                         ret=true;
1693                 }
1694
1695                 if(dragging==DRAG_BOX)
1696                 {
1697                         dragging=DRAG_NONE;
1698                         if((drag_point-mouse_pos).mag()>radius/2.0f)
1699                         {
1700                                 if(canvas_view->get_smach().process_event(EventBox(drag_point,mouse_pos,MouseButton(event->button.button),modifier))==Smach::RESULT_ACCEPT)
1701                                         return true;
1702
1703                                 // when dragging a box around some ducks:
1704                                 // SHIFT selects; CTRL toggles; SHIFT+CTRL unselects; <none> clears all then selects
1705                                 if(modifier&GDK_SHIFT_MASK)
1706                                         select_ducks_in_box(drag_point,mouse_pos);
1707
1708                                 if(modifier&GDK_CONTROL_MASK)
1709                                         toggle_select_ducks_in_box(drag_point,mouse_pos);
1710                                 else if(!(modifier&GDK_SHIFT_MASK))
1711                                 {
1712                                         clear_selected_ducks();
1713                                         select_ducks_in_box(drag_point,mouse_pos);
1714                                 }
1715                                 ret=true;
1716                         }
1717                         else
1718                         {
1719                                 if(allow_layer_clicks)
1720                                 {
1721                                         Layer::Handle layer(get_canvas()->find_layer(drag_point));
1722                                         //if(layer)
1723                                         {
1724                                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_LEFT,mouse_pos,modifier))==Smach::RESULT_OK)
1725                                                         signal_layer_selected_(layer);
1726                                                 ret=true;
1727                                         }
1728                                 }
1729                                 else
1730                                 {
1731                                         signal_user_click(0)(mouse_pos);
1732                                 }
1733                         }
1734                 }
1735
1736                 dragging=DRAG_NONE;
1737
1738                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_UP,MouseButton(event->button.button),mouse_pos,pressure,modifier))==Smach::RESULT_ACCEPT)
1739                         ret=true;
1740
1741                 return ret;
1742         }
1743                 break;
1744         case GDK_SCROLL:
1745         {
1746                 // Handle a mouse scrolling event like Xara Xtreme and
1747                 // Inkscape:
1748
1749                 // Scroll up/down: scroll up/down
1750                 // Shift + scroll up/down: scroll left/right
1751                 // Control + scroll up/down: zoom in/out
1752
1753                 if(modifier&GDK_CONTROL_MASK)
1754                 {
1755
1756                         // The zoom is performed while preserving the pointer
1757                         // position as a fixed point (similarly to Xara Xtreme and
1758                         // Inkscape).
1759
1760                         // The strategy used below is to scroll to the updated
1761                         // position, then zoom. This is easy to implement within
1762                         // the present architecture, but has the disadvantage of
1763                         // triggering multiple visible refreshes. Note: 1.25 is
1764                         // the hard wired ratio in zoom_in()/zoom_out(). The
1765                         // variable "drift" compensates additional inaccuracies in
1766                         // the zoom. There is also an additional minus sign for
1767                         // the inverted y coordinates.
1768
1769                         // FIXME: One might want to figure out where in the code
1770                         // this empirical drift is been introduced.
1771
1772                         const synfig::Point scroll_point(get_scrollx_adjustment()->get_value(),get_scrolly_adjustment()->get_value());
1773                         const double drift = 0.052;
1774
1775                         switch(event->scroll.direction)
1776                         {
1777                                 case GDK_SCROLL_UP:
1778                                 case GDK_SCROLL_RIGHT:
1779                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1.25-(1+drift)));
1780                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1.25-(1+drift)));
1781                                         zoom_in();
1782                                         break;
1783                                 case GDK_SCROLL_DOWN:
1784                                 case GDK_SCROLL_LEFT:
1785                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1/1.25-(1+drift)));
1786                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1/1.25-(1+drift)));
1787                                         zoom_out();
1788                                         break;
1789                                 default:
1790                                         break;
1791                         }
1792                 }
1793                 else if(modifier&GDK_SHIFT_MASK)
1794                 {
1795                         // Scroll in either direction by 20 pixels. Ideally, the
1796                         // amount of pixels per scrolling event should be
1797                         // configurable. Xara Xtreme currently uses an (hard
1798                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1799
1800                         const int scroll_pixel = 20;
1801
1802                         switch(event->scroll.direction)
1803                         {
1804                                 case GDK_SCROLL_UP:
1805                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1806                                         break;
1807                                 case GDK_SCROLL_DOWN:
1808                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1809                                         break;
1810                                 case GDK_SCROLL_LEFT:
1811                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1812                                         break;
1813                                 case GDK_SCROLL_RIGHT:
1814                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1815                                         break;
1816                                 default:
1817                                         break;
1818                         }
1819                 }
1820                 else
1821                 {
1822                         // Scroll in either direction by 20 pixels. Ideally, the
1823                         // amount of pixels per scrolling event should be
1824                         // configurable. Xara Xtreme currently uses an (hard
1825                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1826
1827                         const int scroll_pixel = 20;
1828
1829                         switch(event->scroll.direction)
1830                         {
1831                                 case GDK_SCROLL_UP:
1832                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1833                                         break;
1834                                 case GDK_SCROLL_DOWN:
1835                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1836                                         break;
1837                                 case GDK_SCROLL_LEFT:
1838                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1839                                         break;
1840                                 case GDK_SCROLL_RIGHT:
1841                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1842                                         break;
1843                                 default:
1844                                         break;
1845                         }
1846                 }
1847         }
1848                 break;
1849         default:
1850                 break;
1851         }
1852                 return false;
1853 }
1854
1855 bool
1856 WorkArea::on_hruler_event(GdkEvent */*event*/)
1857 {
1858 /*
1859         switch(event->type)
1860     {
1861         case GDK_BUTTON_PRESS:
1862                 if(dragging==DRAG_NONE)
1863                 {
1864                         dragging=DRAG_GUIDE;
1865                         curr_guide=get_guide_list_y().insert(get_guide_list_y().begin());
1866                         curr_guide_is_x=false;
1867                 }
1868                 return true;
1869                 break;
1870
1871         case GDK_MOTION_NOTIFY:
1872                 // Guide movement
1873                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1874                 {
1875                         double y,x;
1876                         if(event->button.axes)
1877                         {
1878                                 x=(event->button.axes[0]);
1879                                 y=(event->button.axes[1]);
1880                         }
1881                         else
1882                         {
1883                                 x=event->button.x;
1884                                 y=event->button.y;
1885                         }
1886
1887                         if(isnan(y) || isnan(x))
1888                                 return false;
1889
1890                         *curr_guide=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)))[1];
1891
1892                         queue_draw();
1893                 }
1894                 return true;
1895                 break;
1896
1897         case GDK_BUTTON_RELEASE:
1898                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1899                 {
1900                         dragging=DRAG_NONE;
1901                         get_guide_list_y().erase(curr_guide);
1902                 }
1903                 break;
1904                 return true;
1905         default:
1906                 break;
1907         }
1908 */
1909         return false;
1910 }
1911
1912 bool
1913 WorkArea::on_vruler_event(GdkEvent */*event*/)
1914 {
1915 /*
1916         switch(event->type)
1917     {
1918         case GDK_BUTTON_PRESS:
1919                 if(dragging==DRAG_NONE)
1920                 {
1921                         dragging=DRAG_GUIDE;
1922                         curr_guide=get_guide_list_x().insert(get_guide_list_x().begin());
1923                         curr_guide_is_x=true;
1924                 }
1925                 return true;
1926                 break;
1927         case GDK_BUTTON_RELEASE:
1928                 if(dragging==DRAG_GUIDE && curr_guide_is_x==true)
1929                 {
1930                         dragging=DRAG_NONE;
1931                         get_guide_list_x().erase(curr_guide);
1932                 }
1933                 break;
1934                 return true;
1935         default:
1936                 break;
1937         }
1938 */
1939         return false;
1940 }
1941
1942
1943 void
1944 WorkArea::refresh_dimension_info()
1945 {
1946         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1947
1948         canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1949         canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1950
1951         pw=canvaswidth/w;
1952         ph=canvasheight/h;
1953
1954         scrollx_adjustment.set_page_increment(abs(get_grid_size()[0]));
1955         scrollx_adjustment.set_step_increment(abs(pw));
1956         scrollx_adjustment.set_lower(-abs(canvaswidth));
1957         scrollx_adjustment.set_upper(abs(canvaswidth));
1958         scrolly_adjustment.set_lower(-abs(canvasheight));
1959         scrolly_adjustment.set_upper(abs(canvasheight));
1960         scrolly_adjustment.set_step_increment(abs(ph));
1961         scrolly_adjustment.set_page_increment(abs(get_grid_size()[1]));
1962
1963
1964
1965         if(drawing_area->get_width()<=0 || drawing_area->get_height()<=0 || w==0 || h==0)
1966                 return;
1967
1968         const synfig::Point focus_point(get_focus_point());
1969         const synfig::Real x(focus_point[0]/pw+drawing_area->get_width()/2-w/2);
1970         const synfig::Real y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
1971
1972         window_tl[0]=rend_desc.get_tl()[0]-pw*x;
1973         window_br[0]=rend_desc.get_br()[0]+pw*(drawing_area->get_width()-x-w);
1974
1975         window_tl[1]=rend_desc.get_tl()[1]-ph*y;
1976         window_br[1]=rend_desc.get_br()[1]+ph*(drawing_area->get_height()-y-h);
1977
1978         hruler->property_lower()=Distance(window_tl[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1979         hruler->property_upper()=Distance(window_br[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1980         vruler->property_lower()=Distance(window_tl[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1981         vruler->property_upper()=Distance(window_br[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1982
1983         view_window_changed();
1984 }
1985
1986
1987 synfig::Point
1988 WorkArea::screen_to_comp_coords(synfig::Point pos)const
1989 {
1990         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1991         //synfig::Vector::value_type canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1992         //synfig::Vector::value_type canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1993         //synfig::Vector::value_type pw=canvaswidth/w;
1994         //synfig::Vector::value_type ph=canvasheight/h;
1995         Vector focus_point=get_focus_point();
1996         synfig::Vector::value_type x=focus_point[0]/pw+drawing_area->get_width()/2-w/2;
1997         synfig::Vector::value_type y=focus_point[1]/ph+drawing_area->get_height()/2-h/2;
1998
1999         return rend_desc.get_tl()-synfig::Point(pw*x,ph*y)+synfig::Point(pw*pos[0],ph*pos[1]);
2000 }
2001
2002 synfig::Point
2003 WorkArea::comp_to_screen_coords(synfig::Point /*pos*/)const
2004 {
2005         synfig::warning("WorkArea::comp_to_screen_coords: Not yet implemented");
2006         return synfig::Point();
2007 }
2008
2009 int
2010 WorkArea::next_unrendered_tile(int refreshes)const
2011 {
2012         //assert(!tile_book.empty());
2013         if(tile_book.empty())
2014                 return -1;
2015
2016         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2017
2018         const synfig::Vector focus_point(get_focus_point());
2019
2020         // Calculate the window coordinates of the top-left
2021         // corner of the canvas.
2022         const synfig::Vector::value_type
2023                 x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2024                 y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2025
2026         int div = low_res_pixel_size;
2027         const int width_in_tiles(w/tile_w+((low_resolution?((w/div)%(tile_w/div)):(w%tile_w))?1:0));
2028         const int height_in_tiles(h/tile_h+(h%tile_h?1:0));
2029
2030         int
2031                 u(0),v(0),
2032                 u1(int(-x/tile_w)),
2033                 v1(int(-y/tile_h)),
2034                 u2(int((-x+drawing_area->get_width())/tile_w+1)),
2035                 v2(int((-y+drawing_area->get_height())/tile_h+1));
2036
2037         if(u2>width_in_tiles)u2=width_in_tiles;
2038         if(v2>height_in_tiles)v2=height_in_tiles;
2039         if(u1<0)u1=0;
2040         if(v1<0)v1=0;
2041
2042         int last_good_tile(-1);
2043
2044         for(v=v1;v<v2;v++)
2045                 for(u=u1;u<u2;u++)
2046                 {
2047                         int index(v*width_in_tiles+u);
2048                         if(tile_book[index].second<refreshes)
2049                         {
2050                                 last_good_tile=index;
2051                                 if(rand()%8==0)
2052                                         return index;
2053                         }
2054                 }
2055         return last_good_tile;
2056 }
2057
2058 /*
2059 template <typename F, typename T=WorkAreaRenderer, typename R=typename F::result_type>
2060 class handle2ptr_t : public std::unary_function<typename etl::handle<T>,R>
2061 {
2062 private:
2063         F func;
2064 public:
2065         handle2ptr_t(const F &func):func(func) { };
2066
2067         R operator()(typename etl::handle<T> x) { return func(*x); }
2068 };
2069
2070 template <typename F>
2071 handle2ptr_t<F>
2072 handle2ptr(F func)
2073 {
2074         return handle2ptr_t<F>(func);
2075 }
2076         for_each(
2077                 renderer_set_.begin(),
2078                 renderer_set_.end(),
2079                 handle2ptr(
2080                         sigc::bind(
2081                                 sigc::bind(
2082                                         sigc::mem_fun(
2083                                                 &WorkAreaRenderer::render_vfunc
2084                                         ),
2085                                         Gdk::Rectangle(event->area)
2086                                 ),
2087                                 drawing_area->get_window()
2088                         )
2089                 )
2090         );
2091 */
2092
2093 bool
2094 WorkArea::refresh(GdkEventExpose*event)
2095 {
2096         assert(get_canvas());
2097
2098         drawing_area->get_window()->clear();
2099
2100         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2101
2102         const synfig::Vector focus_point(get_focus_point());
2103
2104         // Update the old focus point
2105         last_focus_point=focus_point;
2106
2107         // Draw out the renderables
2108         {
2109                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
2110                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
2111                 {
2112                         if((*iter)->get_enabled())
2113                                 (*iter)->render_vfunc(
2114                                         drawing_area->get_window(),
2115                                         Gdk::Rectangle(&event->area)
2116                                 );
2117                 }
2118         }
2119
2120         // Calculate the window coordinates of the top-left
2121         // corner of the canvas.
2122         //const synfig::Vector::value_type
2123         //      x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2124         //      y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2125
2126         //const synfig::Vector::value_type window_startx(window_tl[0]);
2127         //const synfig::Vector::value_type window_endx(window_br[0]);
2128         //const synfig::Vector::value_type window_starty(window_tl[1]);
2129         //const synfig::Vector::value_type window_endy(window_br[1]);
2130
2131         Glib::RefPtr<Gdk::GC> gc=Gdk::GC::create(drawing_area->get_window());
2132
2133         // If we are in animate mode, draw a red border around the screen
2134         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2135         {
2136 // #define USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2137 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2138                 // This method of drawing the red border doesn't work on any
2139                 // Gtk theme which uses the crux-engine, hcengine, industrial,
2140                 // mist, or ubuntulooks engine, such as the default ubuntu
2141                 // 'Human' theme.
2142                 drawing_frame->modify_bg(Gtk::STATE_NORMAL,Gdk::Color("#FF0000"));
2143 #else
2144                 // So let's do it in a more primitive fashion.
2145                 gc->set_rgb_fg_color(Gdk::Color("#FF0000"));
2146                 gc->set_line_attributes(1,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
2147                 drawing_area->get_window()->draw_rectangle(
2148                         gc,
2149                         false,  // Fill?
2150                         0,0,    // x,y
2151                         drawing_area->get_width()-1,drawing_area->get_height()-1); // w,h
2152 #endif
2153         }
2154 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2155         else
2156                 drawing_frame->unset_bg(Gtk::STATE_NORMAL);
2157 #endif
2158
2159         return true;
2160 }
2161
2162 void
2163 WorkArea::done_rendering()
2164 {
2165 /*
2166         assert(buffer);
2167         assert(w>0);
2168         assert(h>0);
2169         pix_buf=Gdk::Pixbuf::create_from_data(
2170                 buffer, // pointer to the data
2171                 Gdk::COLORSPACE_RGB, // the colorspace
2172                 true, // has alpha?
2173                 8, // bits per sample
2174                 w,      // width
2175                 h,      // height
2176                 w*bpp); // stride (pitch)
2177         assert(pix_buf);
2178 */
2179 }
2180
2181
2182 void
2183 WorkArea::set_quality(int x)
2184 {
2185         if(x==quality)
2186                 return;
2187         quality=x;
2188         queue_render_preview();
2189 }
2190
2191 void
2192 WorkArea::set_low_res_pixel_size(int x)
2193 {
2194         if(x==low_res_pixel_size)
2195                 return;
2196         low_res_pixel_size=x;
2197         queue_render_preview();
2198 }
2199
2200 namespace studio
2201 {
2202 class WorkAreaProgress : public synfig::ProgressCallback
2203 {
2204         WorkArea *work_area;
2205         ProgressCallback *cb;
2206
2207 public:
2208
2209         WorkAreaProgress(WorkArea *work_area,ProgressCallback *cb):
2210                 work_area(work_area),cb(cb)
2211         {
2212                 assert(cb);
2213         }
2214
2215         virtual bool
2216         task(const std::string &str)
2217         {
2218                 if(work_area->dirty)
2219                         return false;
2220                 return cb->task(str);
2221         }
2222
2223         virtual bool
2224         error(const std::string &err)
2225         {
2226                 if(work_area->dirty)
2227                         return false;
2228                 return cb->error(err);
2229         }
2230
2231         virtual bool
2232         amount_complete(int current, int total)
2233         {
2234                 if(work_area->dirty)
2235                         return false;
2236                 return cb->amount_complete(current,total);
2237         }
2238 };
2239 }
2240
2241 bool
2242 studio::WorkArea::async_update_preview()
2243 {
2244 #ifdef SINGLE_THREADED
2245         if (get_updating())
2246         {
2247                 stop_updating();
2248                 queue_render_preview();
2249                 return false;
2250         }
2251 #endif
2252
2253         async_renderer=0;
2254
2255         queued=false;
2256         canceled_=false;
2257         get_canvas_view()->reset_cancel_status();
2258
2259         // This object will mark us as busy until
2260         // we are done.
2261         //studio::App::Busy busy;
2262
2263         //WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2264         //synfig::ProgressCallback *cb=&callback;
2265
2266         if(!is_visible())return false;
2267
2268         /*
2269         // If we are queued to render the scene at the next idle
2270         // go ahead and de-queue it.
2271         if(render_idle_func_id)
2272         {
2273                 g_source_remove(render_idle_func_id);
2274                 //queued=false;
2275                 render_idle_func_id=0;
2276         }
2277         */
2278
2279         dirty=false;
2280         get_canvas_view()->reset_cancel_status();
2281
2282         //bool ret=false;
2283         RendDesc desc=get_canvas()->rend_desc();
2284
2285         int w=(int)(desc.get_w()*zoom);
2286         int h=(int)(desc.get_h()*zoom);
2287
2288         // ensure that the size we draw is at least one pixel in each dimension
2289         int min_size = low_resolution ? low_res_pixel_size : 1;
2290         if (w < min_size) w = min_size;
2291         if (h < min_size) h = min_size;
2292
2293         // Setup the description parameters
2294         desc.set_antialias(1);
2295         desc.set_time(cur_time);
2296
2297         set_rend_desc(desc);
2298
2299         // Create the render target
2300         handle<Target> target;
2301
2302         // if we have lots of pixels to render and the tile renderer isn't disabled, use it
2303         int div;
2304         div = low_resolution ? low_res_pixel_size : 1;
2305         if ((w*h > 240*div*135*div && !getenv("SYNFIG_DISABLE_TILE_RENDER")) || getenv("SYNFIG_FORCE_TILE_RENDER"))
2306         {
2307                 // do a tile render
2308                 handle<WorkAreaTarget> trgt(new class WorkAreaTarget(this,w,h));
2309
2310                 trgt->set_rend_desc(&desc);
2311                 trgt->set_onion_skin(get_onion_skin(), onion_skins);
2312                 target=trgt;
2313         }
2314         else
2315         {
2316                 // do a scanline render
2317                 handle<WorkAreaTarget_Full> trgt(new class WorkAreaTarget_Full(this,w,h));
2318
2319                 trgt->set_rend_desc(&desc);
2320                 trgt->set_onion_skin(get_onion_skin(), onion_skins);
2321                 target=trgt;
2322         }
2323
2324         // We can rest assured that our time has already
2325         // been set, so there is no need to have to
2326         // recalculate that over again.
2327         // UPDATE: This is kind of needless with
2328         // the way that time is handled now in SYNFIG.
2329         //target->set_avoid_time_sync(true);
2330         async_renderer=new AsyncRenderer(target);
2331         async_renderer->signal_finished().connect(
2332                 sigc::mem_fun(this,&WorkArea::async_update_finished)
2333         );
2334
2335         rendering=true;
2336         async_renderer->start();
2337
2338         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2339
2340         rendering=true;
2341         cb->task(_("Rendering..."));
2342         rendering=true;
2343
2344         return true;
2345 }
2346
2347 void
2348 studio::WorkArea::async_update_finished()
2349 {
2350         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2351
2352         rendering=false;
2353
2354         if(!async_renderer)
2355                 return;
2356
2357         // If we completed successfully, then
2358         // we aren't dirty anymore
2359         if(async_renderer->has_success())
2360         {
2361                 dirty=false;
2362                 //queued=false;
2363                 cb->task(_("Idle"));
2364         }
2365         else
2366         {
2367                 dirty=true;
2368                 cb->task(_("Render Failed"));
2369         }
2370         //get_canvas_view()->reset_cancel_status();
2371         done_rendering();
2372 }
2373
2374 bool
2375 studio::WorkArea::sync_update_preview()
2376 {
2377         //      const Time &time(cur_time);
2378
2379         canceled_=false;
2380         get_canvas_view()->reset_cancel_status();
2381
2382         async_renderer=0;
2383
2384 again:
2385         // This object will mark us as busy until
2386         // we are done.
2387         studio::App::Busy busy;
2388
2389         WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2390         synfig::ProgressCallback *cb=&callback;
2391
2392         // We don't want to render if we are already rendering
2393         if(rendering)
2394         {
2395                 dirty=true;
2396                 return false;
2397         }
2398
2399         if(!is_visible())return false;
2400         get_canvas()->set_time(get_time());
2401         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2402         signal_rendering()();
2403
2404         // If we are queued to render the scene at the next idle
2405         // go ahead and de-queue it.
2406         if(render_idle_func_id)
2407         {
2408                 g_source_remove(render_idle_func_id);
2409                 //queued=false;
2410                 render_idle_func_id=0;
2411         }
2412         // Start rendering
2413         rendering=true;
2414
2415         dirty=false;
2416         get_canvas_view()->reset_cancel_status();
2417
2418         RendDesc desc=get_canvas()->rend_desc();
2419         //newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
2420
2421         int w=(int)(desc.get_w()*zoom);
2422         int h=(int)(desc.get_h()*zoom);
2423
2424         // Setup the description parameters
2425         desc.set_antialias(1);
2426         desc.set_time(cur_time);
2427         //desc.set_wh(w,h);
2428
2429         set_rend_desc(desc);
2430
2431         // Create the render target
2432         handle<WorkAreaTarget> target(new class WorkAreaTarget(this,w,h));
2433
2434         target->set_rend_desc(&desc);
2435
2436         // We can rest assured that our time has already
2437         // been set, so there is no need to have to
2438         // recalculate that over again.
2439         target->set_avoid_time_sync(true);
2440
2441         if(cb)
2442                 cb->task(strprintf(_("Rendering canvas %s..."),get_canvas()->get_name().c_str()));
2443
2444         bool ret = target->render(cb);
2445
2446         if(!ret && !get_canvas_view()->get_cancel_status() && dirty)
2447         {
2448                 rendering=false;
2449                 //canceled_=true;
2450                 goto again;
2451         }
2452         if(get_canvas_view()->get_cancel_status())
2453                 canceled_=true;
2454
2455         if(cb)
2456         {
2457                 if(ret)
2458                         cb->task(_("Idle"));
2459                 else
2460                         cb->task(_("Render Failed"));
2461                 cb->amount_complete(0,1);
2462         }
2463
2464         // Refresh the work area to make sure that
2465         // it is being displayed correctly
2466         drawing_area->queue_draw();
2467
2468         // If we completed successfully, then
2469         // we aren't dirty anymore
2470         if(ret)
2471         {
2472                 dirty=false;
2473                 //queued=false;
2474         }
2475         else dirty=true;
2476         rendering=false;
2477         //get_canvas_view()->reset_cancel_status();
2478         done_rendering();
2479         return ret;
2480 }
2481
2482 void
2483 studio::WorkArea::async_render_preview(synfig::Time time)
2484 {
2485         cur_time=time;
2486         //tile_book.clear();
2487
2488         refreshes+=5;
2489         if(!is_visible())return;
2490
2491         get_canvas()->set_time(get_time());
2492         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2493         signal_rendering()();
2494
2495         async_update_preview();
2496 }
2497 void
2498 WorkArea::async_render_preview()
2499 {
2500         return async_render_preview(get_canvas_view()->get_time());
2501 }
2502
2503 bool
2504 studio::WorkArea::sync_render_preview(synfig::Time time)
2505 {
2506         cur_time=time;
2507         //tile_book.clear();
2508         refreshes+=5;
2509         if(!is_visible())return false;
2510         return sync_update_preview();
2511 }
2512
2513 bool
2514 WorkArea::sync_render_preview()
2515 {
2516         return sync_render_preview(get_canvas_view()->get_time());
2517 }
2518
2519 void
2520 WorkArea::sync_render_preview_hook()
2521 {
2522         sync_render_preview(get_canvas_view()->get_time());
2523 }
2524
2525 void
2526 WorkArea::queue_scroll()
2527 {
2528 //      const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2529
2530         const synfig::Point focus_point(get_focus_point());
2531
2532         const synfig::Real
2533                 new_x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2534                 new_y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2535
2536         const synfig::Real
2537                 old_x(last_focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2538                 old_y(last_focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2539
2540         // If the coordinates didn't change, we shouldn't queue a draw
2541         if(old_x==new_x && old_y==new_y)
2542                 return;
2543
2544         const int
2545                 dx(round_to_int(old_x)-round_to_int(new_x)),
2546                 dy(round_to_int(old_y)-round_to_int(new_y));
2547
2548         drawing_area->get_window()->scroll(-dx,-dy);
2549
2550         if (timecode_width && timecode_height)
2551         {
2552                 drawing_area->queue_draw_area(4,       4,    4+timecode_width,    4+timecode_height);
2553                 drawing_area->queue_draw_area(4-dx, 4-dy, 4-dx+timecode_width, 4-dy+timecode_height);
2554         }
2555
2556 #ifndef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2557         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2558         {
2559                 int maxx = drawing_area->get_width()-1;
2560                 int maxy = drawing_area->get_height()-1;
2561
2562                 if (dx > 0)
2563                 {
2564                         drawing_area->queue_draw_area(      0, 0,       1, maxy);
2565                         drawing_area->queue_draw_area(maxx-dx, 0, maxx-dx, maxy);
2566                 }
2567                 else if (dx < 0)
2568                 {
2569                         drawing_area->queue_draw_area(   maxx, 0,    maxx, maxy);
2570                         drawing_area->queue_draw_area(    -dx, 0,     -dx, maxy);
2571                 }
2572                 if (dy > 0)
2573                 {
2574                         drawing_area->queue_draw_area(0,       0, maxx,       1);
2575                         drawing_area->queue_draw_area(0, maxy-dy, maxx, maxy-dy);
2576                 }
2577                 else if (dy < 0)
2578                 {
2579                         drawing_area->queue_draw_area(0,    maxy, maxx,    maxy);
2580                         drawing_area->queue_draw_area(0,     -dy, maxx,     -dy);
2581                 }
2582         }
2583 #endif // USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2584
2585         last_focus_point=focus_point;
2586 }
2587
2588 void
2589 studio::WorkArea::zoom_in()
2590 {
2591         set_zoom(zoom*1.25);
2592 }
2593
2594 void
2595 studio::WorkArea::zoom_out()
2596 {
2597         set_zoom(zoom/1.25);
2598 }
2599
2600 void
2601 studio::WorkArea::zoom_fit()
2602 {
2603         float new_zoom(min(drawing_area->get_width() * zoom / w,
2604                                            drawing_area->get_height() * zoom / h) * 0.995);
2605         if (zoom / new_zoom > 0.995 && new_zoom / zoom > 0.995)
2606         {
2607                 set_zoom(prev_zoom);
2608                 return set_focus_point(previous_focus);
2609         }
2610         previous_focus = get_focus_point();
2611         prev_zoom = zoom;
2612         set_zoom(new_zoom);
2613         set_focus_point(Point(0,0));
2614 }
2615
2616 void
2617 studio::WorkArea::zoom_norm()
2618 {
2619         if (zoom == 1.0) return set_zoom(prev_zoom);
2620         prev_zoom = zoom;
2621         set_zoom(1.0f);
2622 }
2623
2624 gboolean
2625 studio::WorkArea::__render_preview(gpointer data)
2626 {
2627         WorkArea *work_area(static_cast<WorkArea*>(data));
2628
2629         // there's no point anyone trying to cancel the timer now - it's gone off already
2630         work_area->render_idle_func_id = 0;
2631
2632         work_area->queued=false;
2633         work_area->async_render_preview(work_area->get_canvas_view()->get_time());
2634
2635         return 0;
2636 }
2637
2638 void
2639 studio::WorkArea::queue_render_preview()
2640 {
2641         //synfig::info("queue_render_preview(): called for %s", get_canvas_view()->get_time().get_string().c_str());
2642
2643         if(queued==true)
2644         {
2645                 return;
2646                 //synfig::info("queue_render_preview(): already queued, unqueuing");
2647 /*              if(render_idle_func_id)
2648                         g_source_remove(render_idle_func_id);
2649                 render_idle_func_id=0;
2650                 queued=false;
2651 */
2652                 //async_renderer=0;
2653         }
2654
2655         if(dirty_trap_enabled)
2656         {
2657                 dirty_trap_queued++;
2658                 return;
2659         }
2660
2661         int queue_time=50;
2662
2663         if(rendering)
2664                 queue_time+=250;
2665
2666
2667         if(queued==false)
2668         {
2669                 //synfig::info("queue_render_preview(): (re)queuing...");
2670                 //render_idle_func_id=g_idle_add_full(G_PRIORITY_DEFAULT,__render_preview,this,NULL);
2671                 render_idle_func_id=g_timeout_add_full(
2672                         G_PRIORITY_DEFAULT,     // priority -
2673                         queue_time,                     // interval - the time between calls to the function, in milliseconds (1/1000ths of a second)
2674                         __render_preview,       // function - function to call
2675                         this,                           // data     - data to pass to function
2676                         NULL);                          // notify   - function to call when the idle is removed, or NULL
2677                 queued=true;
2678         }
2679 /*      else if(rendering)
2680         {
2681                 refreshes+=5;
2682                 dirty=true;
2683                 queue_draw();
2684         }
2685 */
2686 }
2687
2688 DirtyTrap::DirtyTrap(WorkArea *work_area):work_area(work_area)
2689 {
2690         work_area->dirty_trap_enabled=true;
2691
2692         work_area->dirty_trap_queued=0;
2693 }
2694
2695 DirtyTrap::~DirtyTrap()
2696 {
2697         work_area->dirty_trap_enabled=false;
2698         if(work_area->dirty_trap_queued)
2699                 work_area->queue_render_preview();
2700 }
2701
2702 void
2703 studio::WorkArea::queue_draw_preview()
2704 {
2705         drawing_area->queue_draw();
2706 }
2707
2708 void
2709 studio::WorkArea::set_cursor(const Gdk::Cursor& x)
2710 {
2711         drawing_area->get_window()->set_cursor(x);
2712 }
2713 void
2714 studio::WorkArea::set_cursor(Gdk::CursorType x)
2715 {
2716         drawing_area->get_window()->set_cursor(Gdk::Cursor(x));
2717 }
2718
2719 #include "iconcontroller.h"
2720
2721 void
2722 studio::WorkArea::refresh_cursor()
2723 {
2724 //      set_cursor(IconController::get_tool_cursor(canvas_view->get_smach().get_state_name(),drawing_area->get_window()));
2725 }
2726
2727 void
2728 studio::WorkArea::reset_cursor()
2729 {
2730         drawing_area->get_window()->set_cursor(Gdk::Cursor(Gdk::TOP_LEFT_ARROW));
2731 //      set_cursor(Gdk::TOP_LEFT_ARROW);
2732 }
2733
2734 void
2735 studio::WorkArea::set_zoom(float z)
2736 {
2737         z=max(1.0f/128.0f,min(128.0f,z));
2738         if(z==zoom)
2739                 return;
2740         zoom = z;
2741         refresh_dimension_info();
2742         /*if(async_renderer)
2743         {
2744                 async_renderer->stop();
2745                 async_renderer=0;
2746         }*/
2747         refreshes+=5;
2748         async_update_preview();
2749         //queue_render_preview();
2750 }
2751
2752 void
2753 WorkArea::set_selected_value_node(etl::loose_handle<synfig::ValueNode> x)
2754 {
2755         if(x!=selected_value_node_)
2756         {
2757                 selected_value_node_=x;
2758                 queue_draw();
2759         }
2760 }
2761
2762 void
2763 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x)
2764 {
2765         renderer_set_.insert(x);
2766         x->set_work_area(this);
2767         queue_draw();
2768 }
2769
2770 void
2771 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x, int priority)
2772 {
2773         x->set_priority(priority);
2774         insert_renderer(x);
2775 }
2776
2777 void
2778 WorkArea::erase_renderer(const etl::handle<WorkAreaRenderer> &x)
2779 {
2780         x->set_work_area(0);
2781         renderer_set_.erase(x);
2782         queue_draw();
2783 }
2784
2785 void
2786 WorkArea::resort_render_set()
2787 {
2788         std::set<etl::handle<WorkAreaRenderer> > tmp(
2789                 renderer_set_.begin(),
2790                 renderer_set_.end()
2791         );
2792         renderer_set_.swap(tmp);
2793         queue_draw();
2794 }