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

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