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                 render_idle_func_id=0;
 810 }
 811
 812 void
 813 WorkArea::save_meta_data()
 814 {
 815         if(meta_data_lock)
 816                 return;
 817         meta_data_lock=true;
 818
 819         Vector s(get_grid_size());
 820         canvas_interface->set_meta_data("grid_size",strprintf("%f %f",s[0],s[1]));
 821         canvas_interface->set_meta_data("grid_snap",get_grid_snap()?"1":"0");
 822         canvas_interface->set_meta_data("guide_snap",get_guide_snap()?"1":"0");
 823         canvas_interface->set_meta_data("guide_show",get_show_guides()?"1":"0");
 824         canvas_interface->set_meta_data("grid_show",show_grid?"1":"0");
 825         canvas_interface->set_meta_data("onion_skin",onion_skin?"1":"0");
 826         {
 827                 String data;
 828                 GuideList::const_iterator iter;
 829                 for(iter=get_guide_list_x().begin();iter!=get_guide_list_x().end();++iter)
 830                 {
 831                         if(!data.empty())
 832                                 data+=' ';
 833                         data+=strprintf("%f",*iter);
 834                 }
 835                 if(!data.empty())
 836                         canvas_interface->set_meta_data("guide_x",data);
 837
 838                 data.clear();
 839                 for(iter=get_guide_list_y().begin();iter!=get_guide_list_y().end();++iter)
 840                 {
 841                         if(!data.empty())
 842                                 data+=' ';
 843                         data+=strprintf("%f",*iter);
 844                 }
 845                 if(!data.empty())
 846                         canvas_interface->set_meta_data("guide_y",data);
 847         }
 848
 849         if(get_sketch_filename().size())
 850         {
 851                 if(dirname(canvas->get_file_name())==dirname(get_sketch_filename()))
 852                         canvas_interface->set_meta_data("sketch",basename(get_sketch_filename()));
 853                 else
 854                         canvas_interface->set_meta_data("sketch",get_sketch_filename());
 855         }
 856
 857         meta_data_lock=false;
 858 }
 859
 860 void
 861 WorkArea::load_meta_data()
 862 {
 863         if(meta_data_lock)
 864                 return;
 865         meta_data_lock=true;
 866
 867         String data;
 868
 869         data=canvas->get_meta_data("grid_size");
 870         if(!data.empty())
 871         {
 872                 float gx(get_grid_size()[0]),gy(get_grid_size()[1]);
 873
 874                 String::iterator iter(find(data.begin(),data.end(),' '));
 875                 String tmp(data.begin(),iter);
 876
 877                 if(!tmp.empty())
 878                         gx=stratof(tmp);
 879
 880                 if(iter==data.end())
 881                         tmp.clear();
 882                 else
 883                         tmp=String(iter+1,data.end());
 884
 885                 if(!tmp.empty())
 886                         gy=stratof(tmp);
 887
 888                 set_grid_size(Vector(gx,gy));
 889         }
 890         else
 891                 synfig::error("WorkArea::load_meta_data(): Unable to parse data for \"grid_size\", which was \"%s\"",data.c_str());
 892
 893         data=canvas->get_meta_data("grid_show");
 894         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 895                 show_grid=true;
 896         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 897                 show_grid=false;
 898
 899         data=canvas->get_meta_data("solid_lines");
 900         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 901                 solid_lines=true;
 902         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 903                 solid_lines=false;
 904
 905         data=canvas->get_meta_data("guide_show");
 906         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 907                 show_guides=true;
 908         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 909                 show_guides=false;
 910
 911         data=canvas->get_meta_data("grid_snap");
 912         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 913                 set_grid_snap(true);
 914         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 915                 set_grid_snap(false);
 916
 917         data=canvas->get_meta_data("guide_snap");
 918         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 919                 set_guide_snap(true);
 920         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 921                 set_guide_snap(false);
 922
 923         data=canvas->get_meta_data("onion_skin");
 924         if(data.size() && (data=="1" || data[0]=='t' || data[0]=='T'))
 925                 set_onion_skin(true);
 926         if(data.size() && (data=="0" || data[0]=='f' || data[0]=='F'))
 927                 set_onion_skin(false);
 928
 929         data=canvas->get_meta_data("guide_x");
 930         get_guide_list_x().clear();
 931         while(!data.empty())
 932         {
 933                 String::iterator iter(find(data.begin(),data.end(),' '));
 934                 String guide(data.begin(),iter);
 935
 936                 if(!guide.empty())
 937                         get_guide_list_x().push_back(stratof(guide));
 938
 939                 if(iter==data.end())
 940                         data.clear();
 941                 else
 942                         data=String(iter+1,data.end());
 943         }
 944         //sort(get_guide_list_x());
 945
 946         data=canvas->get_meta_data("guide_y");
 947         get_guide_list_y().clear();
 948         while(!data.empty())
 949         {
 950                 String::iterator iter(find(data.begin(),data.end(),' '));
 951                 String guide(data.begin(),iter);
 952
 953                 if(!guide.empty())
 954                         get_guide_list_y().push_back(stratof(guide));
 955
 956                 if(iter==data.end())
 957                         data.clear();
 958                 else
 959                         data=String(iter+1,data.end());
 960         }
 961         //sort(get_guide_list_y());
 962
 963         meta_data_lock=false;
 964         queue_draw();
 965 }
 966
 967 void
 968 WorkArea::set_onion_skin(bool x)
 969 {
 970         if(onion_skin==x)
 971                 return;
 972         onion_skin=x;
 973         save_meta_data();
 974         queue_render_preview();
 975         signal_onion_skin_changed()();
 976 }
 977
 978 bool
 979 WorkArea::get_onion_skin()const
 980 {
 981         return onion_skin;
 982 }
 983
 984 void
 985 WorkArea::enable_grid()
 986 {
 987         show_grid=true;
 988         save_meta_data();
 989         queue_draw();
 990 }
 991
 992 void
 993 WorkArea::disable_grid()
 994 {
 995         show_grid=false;
 996         save_meta_data();
 997         queue_draw();
 998 }
 999
1000 void
1001 WorkArea::set_show_guides(bool x)
1002 {
1003         show_guides=x;
1004         save_meta_data();
1005         queue_draw();
1006 }
1007
1008 void
1009 WorkArea::toggle_grid()
1010 {
1011         show_grid=!show_grid;
1012         save_meta_data();
1013         queue_draw();
1014 }
1015
1016 void
1017 WorkArea::set_low_resolution_flag(bool x)
1018 {
1019         if(x!=low_resolution)
1020         {
1021                 low_resolution=x;
1022                 queue_render_preview();
1023         }
1024 }
1025
1026 void
1027 WorkArea::toggle_low_resolution_flag()
1028 {
1029         set_low_resolution_flag(!get_low_resolution_flag());
1030 }
1031
1032 void
1033 WorkArea::popup_menu()
1034 {
1035         signal_popup_menu()();
1036 }
1037
1038 void
1039 WorkArea::set_grid_size(const synfig::Vector &s)
1040 {
1041         Duckmatic::set_grid_size(s);
1042         save_meta_data();
1043         queue_draw();
1044 }
1045
1046 void
1047 WorkArea::set_focus_point(const synfig::Point &point)
1048 {
1049         // These next three lines try to ensure that we place the
1050         // focus on a pixel boundry
1051         /*Point adjusted(point[0]/abs(get_pw()),point[1]/abs(get_ph()));
1052         adjusted[0]=(abs(adjusted[0]-floor(adjusted[0]))<0.5)?floor(adjusted[0])*abs(get_pw()):ceil(adjusted[0])*abs(get_ph());
1053         adjusted[1]=(abs(adjusted[1]-floor(adjusted[1]))<0.5)?floor(adjusted[1])*abs(get_ph()):ceil(adjusted[1])*abs(get_ph());
1054         */
1055         const synfig::Point& adjusted(point);
1056
1057         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1058         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1059         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1060
1061         get_scrollx_adjustment()->set_value(adjusted[0]*x_factor);
1062         get_scrolly_adjustment()->set_value(adjusted[1]*y_factor);
1063 }
1064
1065 synfig::Point
1066 WorkArea::get_focus_point()const
1067 {
1068         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1069         Real x_factor=(rend_desc.get_br()[0]-rend_desc.get_tl()[0]>0)?-1:1;
1070         Real y_factor=(rend_desc.get_br()[1]-rend_desc.get_tl()[1]>0)?-1:1;
1071
1072         return synfig::Point(get_scrollx_adjustment()->get_value()*x_factor, get_scrolly_adjustment()->get_value()*y_factor);
1073 }
1074
1075 bool
1076 WorkArea::set_wh(int W, int H,int CHAN)
1077 {
1078         // If our size is already set, don't set it again
1079         if(W==w && H==h && CHAN==bpp)
1080         {
1081                 return true;
1082         }
1083         if(W<=0 || H<=0 || CHAN<=0)
1084                 return false;
1085
1086         assert(W>0);
1087         assert(H>0);
1088         assert(CHAN>0);
1089
1090         // Set all of the parameters
1091         w=W;
1092         h=H;
1093         bpp=CHAN;
1094
1095         refresh_dimension_info();
1096
1097         tile_book.clear();
1098
1099         return true;
1100 }
1101
1102 bool
1103 WorkArea::on_key_press_event(GdkEventKey* event)
1104 {
1105         if(get_selected_ducks().empty())
1106                 return false;
1107
1108         Real multiplier(1.0);
1109
1110         if(Gdk::ModifierType(event->state)&GDK_SHIFT_MASK)
1111                 multiplier=10.0;
1112
1113         Vector nudge;
1114         switch(event->keyval)
1115         {
1116                 case GDK_Left:
1117                         nudge=Vector(-pw,0);
1118                         break;
1119                 case GDK_Right:
1120                         nudge=Vector(pw,0);
1121                         break;
1122                 case GDK_Up:
1123                         nudge=Vector(0,-ph);
1124                         break;
1125                 case GDK_Down:
1126                         nudge=Vector(0,ph);
1127                         break;
1128                 default:
1129                         return false;
1130                         break;
1131         }
1132
1133         synfigapp::Action::PassiveGrouper grouper(instance.get(),"Nudge");
1134
1135         // Grid snap does not apply to nudging
1136         bool grid_snap_holder(get_grid_snap());
1137         bool guide_snap_holder(get_guide_snap());
1138         set_grid_snap(false);
1139
1140         try {
1141                 start_duck_drag(get_selected_duck()->get_trans_point());
1142                 translate_selected_ducks(get_selected_duck()->get_trans_point()+nudge*multiplier);
1143                 end_duck_drag();
1144         }
1145         catch(String)
1146         {
1147                 canvas_view->duck_refresh_flag=true;
1148                 canvas_view->queue_rebuild_ducks();
1149         }
1150
1151         set_grid_snap(grid_snap_holder);
1152         set_guide_snap(guide_snap_holder);
1153
1154         return true;
1155 }
1156
1157 bool
1158 WorkArea::on_drawing_area_event(GdkEvent *event)
1159 {
1160         synfig::Point mouse_pos;
1161     float bezier_click_pos;
1162         const float radius((abs(pw)+abs(ph))*4);
1163         int button_pressed(0);
1164         float pressure(0);
1165         bool is_mouse(false);
1166         Gdk::ModifierType modifier(Gdk::ModifierType(0));
1167
1168         drawing_area->grab_focus();
1169
1170         // Handle input stuff
1171         if(
1172                 event->any.type==GDK_MOTION_NOTIFY ||
1173                 event->any.type==GDK_BUTTON_PRESS ||
1174                 event->any.type==GDK_2BUTTON_PRESS ||
1175                 event->any.type==GDK_3BUTTON_PRESS ||
1176                 event->any.type==GDK_BUTTON_RELEASE
1177         )
1178         {
1179                 GdkDevice *device;
1180                 if(event->any.type==GDK_MOTION_NOTIFY)
1181                 {
1182                         device=event->motion.device;
1183                         modifier=Gdk::ModifierType(event->motion.state);
1184                 }
1185                 else
1186                 {
1187                         device=event->button.device;
1188                         modifier=Gdk::ModifierType(event->button.state);
1189                 }
1190
1191                 // Make sure we recognise the device
1192                 if(curr_input_device)
1193                 {
1194                         if(curr_input_device!=device)
1195                         {
1196                                 assert(device);
1197                                 curr_input_device=device;
1198                                 signal_input_device_changed()(curr_input_device);
1199                         }
1200                 }
1201                 else if(device)
1202                 {
1203                         curr_input_device=device;
1204                         signal_input_device_changed()(curr_input_device);
1205                 }
1206
1207                 assert(curr_input_device);
1208
1209                 // Calculate the position of the
1210                 // input device in canvas coordinates
1211                 // and the buttons
1212                 if(!event->button.axes)
1213                 {
1214                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->button.x,event->button.y)));
1215                         button_pressed=event->button.button;
1216                         pressure=1.0f;
1217                         is_mouse=true;
1218                         if(isnan(event->button.x) || isnan(event->button.y))
1219                                 return false;
1220                 }
1221                 else
1222                 {
1223                         double x(event->button.axes[0]);
1224                         double y(event->button.axes[1]);
1225                         if(isnan(x) || isnan(y))
1226                                 return false;
1227
1228                         pressure=event->button.axes[2];
1229                         //synfig::info("pressure=%f",pressure);
1230                         pressure-=0.04f;
1231                         pressure/=1.0f-0.04f;
1232
1233
1234                         assert(!isnan(pressure));
1235
1236                         mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)));
1237
1238                         button_pressed=event->button.button;
1239
1240                         if(button_pressed==1 && pressure<0 && (event->any.type!=GDK_BUTTON_RELEASE && event->any.type!=GDK_BUTTON_PRESS))
1241                                 button_pressed=0;
1242                         if(pressure<0)
1243                                 pressure=0;
1244
1245                         //if(event->any.type==GDK_BUTTON_PRESS && button_pressed)
1246                         //      synfig::info("Button pressed on input device = %d",event->button.button);
1247
1248                         //if(event->button.axes[2]>0.1)
1249                         //      button_pressed=1;
1250                         //else
1251                         //      button_pressed=0;
1252                 }
1253         }
1254         // GDK mouse scrolling events
1255         else if(event->any.type==GDK_SCROLL)
1256         {
1257                 // GDK information needed to properly interprete mouse
1258                 // scrolling events are: scroll.state, scroll.x/scroll.y, and
1259                 // scroll.direction. The value of scroll.direction will be
1260                 // obtained later.
1261
1262                 modifier=Gdk::ModifierType(event->scroll.state);
1263                 mouse_pos=synfig::Point(screen_to_comp_coords(synfig::Point(event->scroll.x,event->scroll.y)));
1264         }
1265
1266         // Handle the renderables
1267         {
1268                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
1269                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
1270                 {
1271                         if((*iter)->get_enabled())
1272                                 if((*iter)->event_vfunc(event))
1273                                 {
1274                                         // Event handled. Return true.
1275                                         return true;
1276                                 }
1277                 }
1278         }
1279
1280         // Event hasn't been handled, pass it down
1281         switch(event->type)
1282     {
1283         case GDK_BUTTON_PRESS:
1284                 {
1285                 switch(button_pressed)
1286                 {
1287                 case 1: // Attempt to click on a duck
1288                 {
1289                         etl::handle<Duck> duck;
1290                         dragging=DRAG_NONE;
1291
1292                         if(allow_duck_clicks)
1293                         {
1294                                 duck=find_duck(mouse_pos,radius);
1295
1296                                 if(duck)
1297                                 {
1298                                         // make a note of whether the duck we click on was selected or not
1299                                         if(duck_is_selected(duck))
1300                                                 clicked_duck=duck;
1301                                         else
1302                                         {
1303                                                 clicked_duck=0;
1304                                                 // if CTRL isn't pressed, clicking an unselected duck will unselect all other ducks
1305                                                 if(!(modifier&GDK_CONTROL_MASK))
1306                                                         clear_selected_ducks();
1307                                                 select_duck(duck);
1308                                         }
1309                                 }
1310                         }
1311                         //else
1312                         //      clear_selected_ducks();
1313
1314
1315
1316                         selected_bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1317                         if(duck && duck->get_editable())
1318                         {
1319                                 //get_selected_duck()->signal_user_click(0)();
1320                                 //if(clicked_duck)clicked_duck->signal_user_click(0)();
1321
1322                                 // if the user is holding shift while clicking on a tangent duck, consider splitting the tangent
1323                                 if (event->motion.state&GDK_SHIFT_MASK && duck->get_type() == Duck::TYPE_TANGENT)
1324                                 {
1325                                         synfigapp::ValueDesc value_desc = duck->get_value_desc();
1326
1327                                         // we have the tangent, but need the vertex - that's the parent
1328                                         if (value_desc.parent_is_value_node()) {
1329                                                 ValueNode_Composite::Handle parent_value_node = value_desc.get_parent_value_node();
1330
1331                                                 // if the tangent isn't split, then split it
1332                                                 if (!((*(parent_value_node->get_link("split")))(get_time()).get(bool())))
1333                                                 {
1334                                                         get_canvas_view()->canvas_interface()->
1335                                                                 change_value(synfigapp::ValueDesc(parent_value_node,
1336                                                                                                                                   parent_value_node->get_link_index_from_name("split")),
1337                                                                                          true);
1338                                                         // rebuild the ducks from scratch, so the tangents ducks aren't connected
1339                                                         get_canvas_view()->rebuild_ducks();
1340
1341                                                         // reprocess the mouse click
1342                                                         return on_drawing_area_event(event);
1343                                                 }
1344                                         } else {
1345                                                 // I don't know how to access the vertex from the tangent duck when originally drawing the bline in the bline tool
1346
1347                                                 // synfig::ValueNode::Handle vn = value_desc.get_value_node();
1348                                                 synfig::info("parent isn't value node?  shift-drag-tangent doesn't work in bline tool yet...");
1349                                         }
1350                                 }
1351
1352                                 dragging=DRAG_DUCK;
1353                                 drag_point=mouse_pos;
1354                                 //drawing_area->queue_draw();
1355                                 start_duck_drag(mouse_pos);
1356                                 get_canvas_view()->reset_cancel_status();
1357                                 return true;
1358                         }
1359 // I commented out this section because
1360 // it was causing issues when rotoscoping.
1361 // At the moment, we don't need it, so
1362 // this was the easiest way to fix the problem.
1363 /*
1364                         else
1365                         if(selected_bezier)
1366                         {
1367                                 selected_duck=0;
1368                                 selected_bezier->signal_user_click(0)(bezier_click_pos);
1369                         }
1370 */
1371                         else
1372                         {
1373                                 //clear_selected_ducks();
1374                                 selected_bezier=0;
1375                                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_LEFT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1376                                 {
1377                                         // Check for a guide click
1378                                         GuideList::iterator iter;
1379
1380                                         iter=find_guide_x(mouse_pos,radius);
1381                                         if(iter==get_guide_list_x().end())
1382                                         {
1383                                                 curr_guide_is_x=false;
1384                                                 iter=find_guide_y(mouse_pos,radius);
1385                                         }
1386                                         else
1387                                                 curr_guide_is_x=true;
1388                                         if(iter!=get_guide_list_x().end() && iter!=get_guide_list_y().end())
1389                                         {
1390                                                 dragging=DRAG_GUIDE;
1391                                                 curr_guide=iter;
1392                                                 return true;
1393                                         }
1394
1395
1396                                         // All else fails, try making a selection box
1397                                         dragging=DRAG_BOX;
1398                                         curr_point=drag_point=mouse_pos;
1399                                         return true;
1400                                 }
1401                         }
1402                         break;
1403                 }
1404                 case 2: // Attempt to drag and move the window
1405                 {
1406                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1407                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1408                         if(duck)
1409                                 duck->signal_user_click(1)();
1410                         else
1411                         if(bezier)
1412                                 bezier->signal_user_click(1)(bezier_click_pos);
1413
1414                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_MIDDLE,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1415                         if(is_mouse)
1416                         {
1417                                 dragging=DRAG_WINDOW;
1418                                 drag_point=mouse_pos;
1419                                 signal_user_click(1)(mouse_pos);
1420                         }
1421                         break;
1422                 }
1423                 case 3: // Attempt to either get info on a duck, or open the menu
1424                 {
1425                         etl::handle<Duck> duck=find_duck(mouse_pos,radius);
1426                         etl::handle<Bezier> bezier=find_bezier(mouse_pos,radius,&bezier_click_pos);
1427
1428                         Layer::Handle layer(get_canvas()->find_layer(mouse_pos));
1429                         if(duck)
1430                         {
1431                                 if(get_selected_ducks().size()<=1)
1432                                         duck->signal_user_click(2)();
1433                                 else
1434                                 {
1435                                         canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MULTIPLE_DUCKS_CLICKED,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1436                                 }
1437                                 return true;
1438                         }
1439                         else
1440                         if(bezier)
1441                         {
1442                                 bezier->signal_user_click(2)(bezier_click_pos);
1443                                 return true;
1444                         }
1445                         else
1446                         if(layer)
1447                         {
1448                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_RIGHT,mouse_pos))==Smach::RESULT_OK)
1449                                         return false;
1450                                 return true;
1451                         }
1452                         else
1453                                 canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier));
1454                         /*
1455                         if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,BUTTON_RIGHT,mouse_pos,pressure,modifier))==Smach::RESULT_OK)
1456                         {
1457                                 //popup_menu();
1458                                 return true;
1459                         }
1460                         */
1461                         break;
1462                 }
1463                 case 4:
1464                         signal_user_click(3)(mouse_pos);
1465                         break;
1466                 case 5:
1467                         signal_user_click(4)(mouse_pos);
1468                         break;
1469                 default:
1470                         break;
1471                 }
1472                 }
1473                 break;
1474         case GDK_MOTION_NOTIFY:
1475                 curr_point=mouse_pos;
1476
1477                 if(event->motion.time-last_event_time<25)
1478                         return true;
1479                 else
1480                         last_event_time=event->motion.time;
1481
1482                 signal_cursor_moved_();
1483
1484                 // Guide/Duck hilights on hover
1485                 if(dragging==DRAG_NONE)
1486                 {
1487                         GuideList::iterator iter;
1488
1489                         iter=find_guide_x(mouse_pos,radius);
1490                         if(iter==get_guide_list_x().end())
1491                                 iter=find_guide_y(mouse_pos,radius);
1492
1493                         if(iter!=curr_guide)
1494                         {
1495                                 curr_guide=iter;
1496                                 drawing_area->queue_draw();
1497                         }
1498
1499                         etl::handle<Duck> duck;
1500                         duck=find_duck(mouse_pos,radius);
1501                         if(duck!=hover_duck)
1502                         {
1503                                 hover_duck=duck;
1504                                 drawing_area->queue_draw();
1505                         }
1506                 }
1507
1508
1509                 if(dragging==DRAG_DUCK)
1510                 {
1511                         if(canvas_view->get_cancel_status())
1512                         {
1513                                 dragging=DRAG_NONE;
1514                                 canvas_view->queue_rebuild_ducks();
1515                                 return true;
1516                         }
1517                         /*
1518                         Point point((mouse_pos-selected_duck->get_origin())/selected_duck->get_scalar());
1519                         if(get_grid_snap())
1520                         {
1521                                 point[0]=floor(point[0]/grid_size[0]+0.5)*grid_size[0];
1522                                 point[1]=floor(point[1]/grid_size[1]+0.5)*grid_size[1];
1523                         }
1524                         selected_duck->set_point(point);
1525                         */
1526
1527                         //Point p(mouse_pos);
1528
1529                         set_axis_lock(event->motion.state&GDK_SHIFT_MASK);
1530
1531                         translate_selected_ducks(mouse_pos);
1532
1533                         drawing_area->queue_draw();
1534                 }
1535                 if(dragging==DRAG_BOX)
1536                 {
1537                         curr_point=mouse_pos;
1538                         drawing_area->queue_draw();
1539                 }
1540                 if(dragging==DRAG_GUIDE)
1541                 {
1542                         if(curr_guide_is_x)
1543                                 *curr_guide=mouse_pos[0];
1544                         else
1545                                 *curr_guide=mouse_pos[1];
1546                         drawing_area->queue_draw();
1547                 }
1548                 if(dragging!=DRAG_WINDOW)
1549                 {       // Update those triangle things on the rulers
1550                         const synfig::Point point(mouse_pos);
1551                         hruler->property_position()=Distance(point[0],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1552                         vruler->property_position()=Distance(point[1],Distance::SYSTEM_UNITS).get(App::distance_system,get_canvas()->rend_desc());
1553                 }
1554                 if(dragging==DRAG_WINDOW)
1555                 {
1556                         set_focus_point(get_focus_point()+mouse_pos-drag_point);
1557                 }
1558                 else
1559                 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)
1560                         return true;
1561                 else
1562                 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)
1563                         return true;
1564                 else
1565                 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)
1566                         return true;
1567                 else
1568                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_MOTION,BUTTON_NONE,mouse_pos,pressure,modifier))==Smach::RESULT_ACCEPT)
1569                         return true;
1570
1571                 break;
1572         case GDK_BUTTON_RELEASE:
1573         {
1574                 bool ret(false);
1575
1576                 if(dragging==DRAG_GUIDE)
1577                 {
1578                         dragging=DRAG_NONE;
1579                         save_meta_data();
1580                         return true;
1581                 }
1582                 else
1583                 if(dragging==DRAG_DUCK)
1584                 {
1585                         synfigapp::Action::PassiveGrouper grouper(instance.get(),"Move");
1586                         dragging=DRAG_NONE;
1587                         //translate_selected_ducks(mouse_pos);
1588                         set_axis_lock(false);
1589
1590                         try{
1591                         get_canvas_view()->duck_refresh_flag=false;
1592                         get_canvas_view()->duck_refresh_needed=false;
1593                         const bool drag_did_anything(end_duck_drag());
1594                         get_canvas_view()->duck_refresh_flag=true;
1595                         if(!drag_did_anything)
1596                         {
1597                                 // if we originally clicked on a selected duck ...
1598                                 if(clicked_duck)
1599                                 {
1600                                         // ... and CTRL is pressed, then just toggle the clicked duck
1601                                         //     otherwise make the clicked duck the only selected duck
1602                                         if(modifier&GDK_CONTROL_MASK)
1603                                                 unselect_duck(clicked_duck);
1604                                         else
1605                                         {
1606                                                 clear_selected_ducks();
1607                                                 select_duck(clicked_duck);
1608                                         }
1609                                         clicked_duck->signal_user_click(0)();
1610                                 }
1611                         }
1612                         else
1613                         {
1614                                 if(canvas_view->duck_refresh_needed)
1615                                         canvas_view->queue_rebuild_ducks();
1616                                 return true;
1617                         }
1618                         }catch(String)
1619                         {
1620                                 canvas_view->duck_refresh_flag=true;
1621                                 canvas_view->queue_rebuild_ducks();
1622                                 return true;
1623                         }
1624                         //queue_draw();
1625                         clicked_duck=0;
1626
1627                         ret=true;
1628                 }
1629
1630                 if(dragging==DRAG_BOX)
1631                 {
1632                         dragging=DRAG_NONE;
1633                         if((drag_point-mouse_pos).mag()>radius/2.0f)
1634                         {
1635                                 if(canvas_view->get_smach().process_event(EventBox(drag_point,mouse_pos,MouseButton(event->button.button),modifier))==Smach::RESULT_ACCEPT)
1636                                         return true;
1637
1638                                 // when dragging a box around some ducks:
1639                                 // SHIFT selects; CTRL toggles; SHIFT+CTRL unselects; <none> clears all then selects
1640                                 if(modifier&GDK_SHIFT_MASK)
1641                                         select_ducks_in_box(drag_point,mouse_pos);
1642
1643                                 if(modifier&GDK_CONTROL_MASK)
1644                                         toggle_select_ducks_in_box(drag_point,mouse_pos);
1645                                 else if(!(modifier&GDK_SHIFT_MASK))
1646                                 {
1647                                         clear_selected_ducks();
1648                                         select_ducks_in_box(drag_point,mouse_pos);
1649                                 }
1650                                 ret=true;
1651                         }
1652                         else
1653                         {
1654                                 if(allow_layer_clicks)
1655                                 {
1656                                         Layer::Handle layer(get_canvas()->find_layer(drag_point));
1657                                         //if(layer)
1658                                         {
1659                                                 if(canvas_view->get_smach().process_event(EventLayerClick(layer,BUTTON_LEFT,mouse_pos,modifier))==Smach::RESULT_OK)
1660                                                         signal_layer_selected_(layer);
1661                                                 ret=true;
1662                                         }
1663                                 }
1664                                 else
1665                                 {
1666                                         signal_user_click(0)(mouse_pos);
1667                                 }
1668                         }
1669                 }
1670
1671                 dragging=DRAG_NONE;
1672
1673                 if(canvas_view->get_smach().process_event(EventMouse(EVENT_WORKAREA_MOUSE_BUTTON_UP,MouseButton(event->button.button),mouse_pos,pressure,modifier))==Smach::RESULT_ACCEPT)
1674                         ret=true;
1675
1676                 return ret;
1677         }
1678                 break;
1679         case GDK_SCROLL:
1680         {
1681                 // Handle a mouse scrolling event like Xara Xtreme and
1682                 // Inkscape:
1683
1684                 // Scroll up/down: scroll up/down
1685                 // Shift + scroll up/down: scroll left/right
1686                 // Control + scroll up/down: zoom in/out
1687
1688                 if(modifier&GDK_CONTROL_MASK)
1689                 {
1690
1691                         // The zoom is performed while preserving the pointer
1692                         // position as a fixed point (similarly to Xara Xtreme and
1693                         // Inkscape).
1694
1695                         // The strategy used below is to scroll to the updated
1696                         // position, then zoom. This is easy to implement within
1697                         // the present architecture, but has the disadvantage of
1698                         // triggering multiple visible refreshes. Note: 1.25 is
1699                         // the hard wired ratio in zoom_in()/zoom_out(). The
1700                         // variable "drift" compensates additional inaccuracies in
1701                         // the zoom. There is also an additional minus sign for
1702                         // the inverted y coordinates.
1703
1704                         // FIXME: One might want to figure out where in the code
1705                         // this empirical drift is been introduced.
1706
1707                         const synfig::Point scroll_point(get_scrollx_adjustment()->get_value(),get_scrolly_adjustment()->get_value());
1708                         const double drift = 0.052;
1709
1710                         switch(event->scroll.direction)
1711                         {
1712                                 case GDK_SCROLL_UP:
1713                                 case GDK_SCROLL_RIGHT:
1714                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1.25-(1+drift)));
1715                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1.25-(1+drift)));
1716                                         zoom_in();
1717                                         break;
1718                                 case GDK_SCROLL_DOWN:
1719                                 case GDK_SCROLL_LEFT:
1720                                         get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1/1.25-(1+drift)));
1721                                         get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1/1.25-(1+drift)));
1722                                         zoom_out();
1723                                         break;
1724                                 default:
1725                                         break;
1726                         }
1727                 }
1728                 else if(modifier&GDK_SHIFT_MASK)
1729                 {
1730                         // Scroll in either direction by 20 pixels. Ideally, the
1731                         // amount of pixels per scrolling event should be
1732                         // configurable. Xara Xtreme currently uses an (hard
1733                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1734
1735                         const int scroll_pixel = 20;
1736
1737                         switch(event->scroll.direction)
1738                         {
1739                                 case GDK_SCROLL_UP:
1740                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1741                                         break;
1742                                 case GDK_SCROLL_DOWN:
1743                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1744                                         break;
1745                                 case GDK_SCROLL_LEFT:
1746                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1747                                         break;
1748                                 case GDK_SCROLL_RIGHT:
1749                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1750                                         break;
1751                                 default:
1752                                         break;
1753                         }
1754                 }
1755                 else
1756                 {
1757                         // Scroll in either direction by 20 pixels. Ideally, the
1758                         // amount of pixels per scrolling event should be
1759                         // configurable. Xara Xtreme currently uses an (hard
1760                         // wired) amount 20 pixel, Inkscape defaults to 40 pixels.
1761
1762                         const int scroll_pixel = 20;
1763
1764                         switch(event->scroll.direction)
1765                         {
1766                                 case GDK_SCROLL_UP:
1767                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
1768                                         break;
1769                                 case GDK_SCROLL_DOWN:
1770                                         get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
1771                                         break;
1772                                 case GDK_SCROLL_LEFT:
1773                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
1774                                         break;
1775                                 case GDK_SCROLL_RIGHT:
1776                                         get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
1777                                         break;
1778                                 default:
1779                                         break;
1780                         }
1781                 }
1782         }
1783                 break;
1784         default:
1785                 break;
1786         }
1787                 return false;
1788 }
1789
1790 bool
1791 WorkArea::on_hruler_event(GdkEvent */*event*/)
1792 {
1793 /*
1794         switch(event->type)
1795     {
1796         case GDK_BUTTON_PRESS:
1797                 if(dragging==DRAG_NONE)
1798                 {
1799                         dragging=DRAG_GUIDE;
1800                         curr_guide=get_guide_list_y().insert(get_guide_list_y().begin());
1801                         curr_guide_is_x=false;
1802                 }
1803                 return true;
1804                 break;
1805
1806         case GDK_MOTION_NOTIFY:
1807                 // Guide movement
1808                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1809                 {
1810                         double y,x;
1811                         if(event->button.axes)
1812                         {
1813                                 x=(event->button.axes[0]);
1814                                 y=(event->button.axes[1]);
1815                         }
1816                         else
1817                         {
1818                                 x=event->button.x;
1819                                 y=event->button.y;
1820                         }
1821
1822                         if(isnan(y) || isnan(x))
1823                                 return false;
1824
1825                         *curr_guide=synfig::Point(screen_to_comp_coords(synfig::Point(x,y)))[1];
1826
1827                         queue_draw();
1828                 }
1829                 return true;
1830                 break;
1831
1832         case GDK_BUTTON_RELEASE:
1833                 if(dragging==DRAG_GUIDE && curr_guide_is_x==false)
1834                 {
1835                         dragging=DRAG_NONE;
1836                         get_guide_list_y().erase(curr_guide);
1837                 }
1838                 break;
1839                 return true;
1840         default:
1841                 break;
1842         }
1843 */
1844         return false;
1845 }
1846
1847 bool
1848 WorkArea::on_vruler_event(GdkEvent */*event*/)
1849 {
1850 /*
1851         switch(event->type)
1852     {
1853         case GDK_BUTTON_PRESS:
1854                 DEBUGPOINT();
1855                 if(dragging==DRAG_NONE)
1856                 {
1857                         DEBUGPOINT();
1858                         dragging=DRAG_GUIDE;
1859                         curr_guide=get_guide_list_x().insert(get_guide_list_x().begin());
1860                         curr_guide_is_x=true;
1861                 }
1862                 return true;
1863                 break;
1864         case GDK_BUTTON_RELEASE:
1865                 DEBUGPOINT();
1866                 if(dragging==DRAG_GUIDE && curr_guide_is_x==true)
1867                 {
1868                         DEBUGPOINT();
1869                         dragging=DRAG_NONE;
1870                         get_guide_list_x().erase(curr_guide);
1871                 }
1872                 break;
1873                 return true;
1874         default:
1875                 break;
1876         }
1877 */
1878         return false;
1879 }
1880
1881
1882 void
1883 WorkArea::refresh_dimension_info()
1884 {
1885         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1886
1887         canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1888         canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1889
1890         pw=canvaswidth/w;
1891         ph=canvasheight/h;
1892
1893         scrollx_adjustment.set_page_increment(abs(get_grid_size()[0]));
1894         scrollx_adjustment.set_step_increment(abs(pw));
1895         scrollx_adjustment.set_lower(-abs(canvaswidth));
1896         scrollx_adjustment.set_upper(abs(canvaswidth));
1897         scrolly_adjustment.set_lower(-abs(canvasheight));
1898         scrolly_adjustment.set_upper(abs(canvasheight));
1899         scrolly_adjustment.set_step_increment(abs(ph));
1900         scrolly_adjustment.set_page_increment(abs(get_grid_size()[1]));
1901
1902
1903
1904         if(drawing_area->get_width()<=0 || drawing_area->get_height()<=0 || w==0 || h==0)
1905                 return;
1906
1907         const synfig::Point focus_point(get_focus_point());
1908         const synfig::Real x(focus_point[0]/pw+drawing_area->get_width()/2-w/2);
1909         const synfig::Real y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
1910
1911         window_tl[0]=rend_desc.get_tl()[0]-pw*x;
1912         window_br[0]=rend_desc.get_br()[0]+pw*(drawing_area->get_width()-x-w);
1913
1914         window_tl[1]=rend_desc.get_tl()[1]-ph*y;
1915         window_br[1]=rend_desc.get_br()[1]+ph*(drawing_area->get_height()-y-h);
1916
1917         hruler->property_lower()=Distance(window_tl[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1918         hruler->property_upper()=Distance(window_br[0],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1919         vruler->property_lower()=Distance(window_tl[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1920         vruler->property_upper()=Distance(window_br[1],Distance::SYSTEM_UNITS).get(App::distance_system,rend_desc);
1921
1922         view_window_changed();
1923 }
1924
1925
1926 synfig::Point
1927 WorkArea::screen_to_comp_coords(synfig::Point pos)const
1928 {
1929         synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1930         //synfig::Vector::value_type canvaswidth=rend_desc.get_br()[0]-rend_desc.get_tl()[0];
1931         //synfig::Vector::value_type canvasheight=rend_desc.get_br()[1]-rend_desc.get_tl()[1];
1932         //synfig::Vector::value_type pw=canvaswidth/w;
1933         //synfig::Vector::value_type ph=canvasheight/h;
1934         Vector focus_point=get_focus_point();
1935         synfig::Vector::value_type x=focus_point[0]/pw+drawing_area->get_width()/2-w/2;
1936         synfig::Vector::value_type y=focus_point[1]/ph+drawing_area->get_height()/2-h/2;
1937
1938         return rend_desc.get_tl()-synfig::Point(pw*x,ph*y)+synfig::Point(pw*pos[0],ph*pos[1]);
1939 }
1940
1941 synfig::Point
1942 WorkArea::comp_to_screen_coords(synfig::Point /*pos*/)const
1943 {
1944         synfig::warning("WorkArea::comp_to_screen_coords: Not yet implemented");
1945         return synfig::Point();
1946 }
1947
1948 int
1949 WorkArea::next_unrendered_tile(int refreshes)const
1950 {
1951         //assert(!tile_book.empty());
1952         if(tile_book.empty())
1953                 return -1;
1954
1955         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
1956
1957         const synfig::Vector focus_point(get_focus_point());
1958
1959         // Calculate the window coordinates of the top-left
1960         // corner of the canvas.
1961         const synfig::Vector::value_type
1962                 x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
1963                 y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
1964
1965         const int width_in_tiles(w/tile_w+(w%tile_w?1:0));
1966         const int height_in_tiles(h/tile_h+(h%tile_h?1:0));
1967
1968         int
1969                 u(0),v(0),
1970                 u1(int(-x/tile_w)),
1971                 v1(int(-y/tile_h)),
1972                 u2(int((-x+drawing_area->get_width())/tile_w+1)),
1973                 v2(int((-y+drawing_area->get_height())/tile_h+1));
1974
1975         if(u2>width_in_tiles)u2=width_in_tiles;
1976         if(v2>height_in_tiles)v2=height_in_tiles;
1977         if(u1<0)u1=0;
1978         if(v1<0)v1=0;
1979
1980         int last_good_tile(-1);
1981
1982         for(v=v1;v<v2;v++)
1983                 for(u=u1;u<u2;u++)
1984                 {
1985                         int index(v*width_in_tiles+u);
1986                         if(tile_book[index].second<refreshes)
1987                         {
1988                                 last_good_tile=index;
1989                                 if(rand()%8==0)
1990                                         return index;
1991                         }
1992                 }
1993         return last_good_tile;
1994 }
1995
1996 /*
1997 template <typename F, typename T=WorkAreaRenderer, typename R=typename F::result_type>
1998 class handle2ptr_t : public std::unary_function<typename etl::handle<T>,R>
1999 {
2000 private:
2001         F func;
2002 public:
2003         handle2ptr_t(const F &func):func(func) { };
2004
2005         R operator()(typename etl::handle<T> x) { return func(*x); }
2006 };
2007
2008 template <typename F>
2009 handle2ptr_t<F>
2010 handle2ptr(F func)
2011 {
2012         return handle2ptr_t<F>(func);
2013 }
2014         for_each(
2015                 renderer_set_.begin(),
2016                 renderer_set_.end(),
2017                 handle2ptr(
2018                         sigc::bind(
2019                                 sigc::bind(
2020                                         sigc::mem_fun(
2021                                                 &WorkAreaRenderer::render_vfunc
2022                                         ),
2023                                         Gdk::Rectangle(event->area)
2024                                 ),
2025                                 drawing_area->get_window()
2026                         )
2027                 )
2028         );
2029 */
2030
2031 bool
2032 WorkArea::refresh(GdkEventExpose*event)
2033 {
2034         assert(get_canvas());
2035
2036         drawing_area->get_window()->clear();
2037
2038         //const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2039
2040         const synfig::Vector focus_point(get_focus_point());
2041
2042         // Update the old focus point
2043         last_focus_point=focus_point;
2044
2045         // Draw out the renderables
2046         {
2047                 std::set<etl::handle<WorkAreaRenderer> >::iterator iter;
2048                 for(iter=renderer_set_.begin();iter!=renderer_set_.end();++iter)
2049                 {
2050                         if((*iter)->get_enabled())
2051                                 (*iter)->render_vfunc(
2052                                         drawing_area->get_window(),
2053                                         Gdk::Rectangle(&event->area)
2054                                 );
2055                 }
2056         }
2057
2058         // Calculate the window coordinates of the top-left
2059         // corner of the canvas.
2060         //const synfig::Vector::value_type
2061         //      x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2062         //      y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2063
2064         //const synfig::Vector::value_type window_startx(window_tl[0]);
2065         //const synfig::Vector::value_type window_endx(window_br[0]);
2066         //const synfig::Vector::value_type window_starty(window_tl[1]);
2067         //const synfig::Vector::value_type window_endy(window_br[1]);
2068
2069         Glib::RefPtr<Gdk::GC> gc=Gdk::GC::create(drawing_area->get_window());
2070
2071         // If we are in animate mode, draw a red border around the screen
2072         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2073         {
2074 // #define USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2075 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2076                 // This method of drawing the red border doesn't work on any
2077                 // Gtk theme which uses the crux-engine, hcengine, industrial,
2078                 // mist, or ubuntulooks engine, such as the default ubuntu
2079                 // 'Human' theme.
2080                 drawing_frame->modify_bg(Gtk::STATE_NORMAL,Gdk::Color("#FF0000"));
2081 #else
2082                 // So let's do it in a more primitive fashion.
2083                 gc->set_rgb_fg_color(Gdk::Color("#FF0000"));
2084                 gc->set_line_attributes(1,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
2085                 drawing_area->get_window()->draw_rectangle(
2086                         gc,
2087                         false,  // Fill?
2088                         0,0,    // x,y
2089                         drawing_area->get_width()-1,drawing_area->get_height()-1); // w,h
2090 #endif
2091         }
2092 #ifdef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2093         else
2094                 drawing_frame->unset_bg(Gtk::STATE_NORMAL);
2095 #endif
2096
2097         previous_focus=get_focus_point();
2098
2099         return true;
2100 }
2101
2102 void
2103 WorkArea::done_rendering()
2104 {
2105 /*
2106         assert(buffer);
2107         assert(w>0);
2108         assert(h>0);
2109         pix_buf=Gdk::Pixbuf::create_from_data(
2110                 buffer, // pointer to the data
2111                 Gdk::COLORSPACE_RGB, // the colorspace
2112                 true, // has alpha?
2113                 8, // bits per sample
2114                 w,      // width
2115                 h,      // height
2116                 w*bpp); // stride (pitch)
2117         assert(pix_buf);
2118 */
2119 }
2120
2121
2122 void
2123 WorkArea::set_quality(int x)
2124 {
2125         if(x==quality)
2126                 return;
2127         quality=x;
2128         queue_render_preview();
2129 }
2130
2131
2132 namespace studio
2133 {
2134 class WorkAreaProgress : public synfig::ProgressCallback
2135 {
2136         WorkArea *work_area;
2137         ProgressCallback *cb;
2138
2139 public:
2140
2141         WorkAreaProgress(WorkArea *work_area,ProgressCallback *cb):
2142                 work_area(work_area),cb(cb)
2143         {
2144                 assert(cb);
2145         }
2146
2147         virtual bool
2148         task(const std::string &str)
2149         {
2150                 if(work_area->dirty)
2151                         return false;
2152                 return cb->task(str);
2153         }
2154
2155         virtual bool
2156         error(const std::string &err)
2157         {
2158                 if(work_area->dirty)
2159                         return false;
2160                 return cb->error(err);
2161         }
2162
2163         virtual bool
2164         amount_complete(int current, int total)
2165         {
2166                 if(work_area->dirty)
2167                         return false;
2168                 return cb->amount_complete(current,total);
2169         }
2170 };
2171 }
2172
2173 bool
2174 studio::WorkArea::async_update_preview()
2175 {
2176         async_renderer=0;
2177
2178         queued=false;
2179         canceled_=false;
2180         get_canvas_view()->reset_cancel_status();
2181
2182         // This object will mark us as busy until
2183         // we are done.
2184         //studio::App::Busy busy;
2185
2186         //WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2187         //synfig::ProgressCallback *cb=&callback;
2188
2189         if(!is_visible())return false;
2190
2191         /*
2192         // If we are queued to render the scene at the next idle
2193         // go ahead and de-queue it.
2194         if(render_idle_func_id)
2195         {
2196                 g_source_remove(render_idle_func_id);
2197                 //queued=false;
2198                 render_idle_func_id=0;
2199         }
2200         */
2201
2202         dirty=false;
2203         get_canvas_view()->reset_cancel_status();
2204
2205         //bool ret=false;
2206         RendDesc desc=get_canvas()->rend_desc();
2207
2208         int w=(int)(desc.get_w()*zoom);
2209         int h=(int)(desc.get_h()*zoom);
2210
2211         // Setup the description parameters
2212         desc.set_antialias(1);
2213         desc.set_time(cur_time);
2214
2215         set_rend_desc(desc);
2216
2217         // Create the render target
2218         handle<Target> target;
2219
2220         if(w*h>(low_resolution?480*270:480*270/2))
2221         {
2222                 handle<WorkAreaTarget> trgt(new class WorkAreaTarget(this,w,h));
2223
2224                 trgt->set_rend_desc(&desc);
2225                 trgt->set_onion_skin(get_onion_skin());
2226                 target=trgt;
2227         }
2228         else
2229         {
2230                 handle<WorkAreaTarget_Full> trgt(new class WorkAreaTarget_Full(this,w,h));
2231
2232                 trgt->set_rend_desc(&desc);
2233                 trgt->set_onion_skin(get_onion_skin());
2234                 target=trgt;
2235         }
2236
2237         // We can rest assured that our time has already
2238         // been set, so there is no need to have to
2239         // recalculate that over again.
2240         // UPDATE: This is kind of needless with
2241         // the way that time is handled now in SYNFIG.
2242         //target->set_avoid_time_sync(true);
2243         async_renderer=new AsyncRenderer(target);
2244         async_renderer->signal_finished().connect(
2245                 sigc::mem_fun(this,&WorkArea::async_update_finished)
2246         );
2247
2248         rendering=true;
2249         async_renderer->start();
2250
2251         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2252
2253         rendering=true;
2254         cb->task("Rendering...");
2255         rendering=true;
2256
2257         return true;
2258 }
2259
2260 void
2261 studio::WorkArea::async_update_finished()
2262 {
2263         synfig::ProgressCallback *cb=get_canvas_view()->get_ui_interface().get();
2264
2265         rendering=false;
2266
2267         if(!async_renderer)
2268                 return;
2269
2270         // If we completed successfully, then
2271         // we aren't dirty anymore
2272         if(async_renderer->has_success())
2273         {
2274                 dirty=false;
2275                 //queued=false;
2276                 cb->task("Idle");
2277         }
2278         else
2279         {
2280                 dirty=true;
2281                 cb->task("Render Failed");
2282         }
2283         //get_canvas_view()->reset_cancel_status();
2284         done_rendering();
2285 }
2286
2287 bool
2288 studio::WorkArea::sync_update_preview()
2289 {
2290         //      const Time &time(cur_time);
2291
2292         canceled_=false;
2293         get_canvas_view()->reset_cancel_status();
2294
2295         async_renderer=0;
2296
2297 again:
2298         // This object will mark us as busy until
2299         // we are done.
2300         studio::App::Busy busy;
2301
2302         WorkAreaProgress callback(this,get_canvas_view()->get_ui_interface().get());
2303         synfig::ProgressCallback *cb=&callback;
2304
2305         // We don't want to render if we are already rendering
2306         if(rendering)
2307         {
2308                 dirty=true;
2309                 return false;
2310         }
2311
2312         if(!is_visible())return false;
2313         get_canvas()->set_time(get_time());
2314         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2315         signal_rendering()();
2316
2317         // If we are queued to render the scene at the next idle
2318         // go ahead and de-queue it.
2319         if(render_idle_func_id)
2320         {
2321                 g_source_remove(render_idle_func_id);
2322                 //queued=false;
2323                 render_idle_func_id=0;
2324         }
2325         // Start rendering
2326         rendering=true;
2327
2328         dirty=false;
2329         get_canvas_view()->reset_cancel_status();
2330
2331         RendDesc desc=get_canvas()->rend_desc();
2332         //newdesc->set_flags(RendDesc::PX_ASPECT|RendDesc::IM_SPAN);
2333
2334         int w=(int)(desc.get_w()*zoom);
2335         int h=(int)(desc.get_h()*zoom);
2336
2337         // Setup the description parameters
2338         desc.set_antialias(1);
2339         desc.set_time(cur_time);
2340         //desc.set_wh(w,h);
2341
2342         set_rend_desc(desc);
2343
2344         // Create the render target
2345         handle<WorkAreaTarget> target(new class WorkAreaTarget(this,w,h));
2346
2347         target->set_rend_desc(&desc);
2348
2349         // We can rest assured that our time has already
2350         // been set, so there is no need to have to
2351         // recalculate that over again.
2352         target->set_avoid_time_sync(true);
2353
2354         if(cb)
2355                 cb->task(strprintf("Rendering canvas %s...",get_canvas()->get_name().c_str()));
2356
2357         bool ret = target->render(cb);
2358
2359         if(!ret && !get_canvas_view()->get_cancel_status() && dirty)
2360         {
2361                 rendering=false;
2362                 //canceled_=true;
2363                 goto again;
2364         }
2365         if(get_canvas_view()->get_cancel_status())
2366                 canceled_=true;
2367
2368         if(cb)
2369         {
2370                 if(ret)
2371                         cb->task("Idle");
2372                 else
2373                         cb->task("Render Failed");
2374                 cb->amount_complete(0,1);
2375         }
2376
2377         // Refresh the work area to make sure that
2378         // it is being displayed correctly
2379         drawing_area->queue_draw();
2380
2381         // If we completed successfully, then
2382         // we aren't dirty anymore
2383         if(ret)
2384         {
2385                 dirty=false;
2386                 //queued=false;
2387         }
2388         else dirty=true;
2389         rendering=false;
2390         //get_canvas_view()->reset_cancel_status();
2391         done_rendering();
2392         return ret;
2393 }
2394
2395 void
2396 studio::WorkArea::async_render_preview(Time time)
2397 {
2398         cur_time=time;
2399         //tile_book.clear();
2400
2401         refreshes+=5;
2402         if(!is_visible())return;
2403
2404         get_canvas()->set_time(get_time());
2405         get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
2406         signal_rendering()();
2407
2408         async_update_preview();
2409 }
2410 void
2411 WorkArea::async_render_preview()
2412 {
2413         return async_render_preview(get_canvas_view()->get_time());
2414 }
2415
2416 bool
2417 studio::WorkArea::sync_render_preview(Time time)
2418 {
2419         cur_time=time;
2420         //tile_book.clear();
2421         refreshes+=5;
2422         if(!is_visible())return false;
2423         return sync_update_preview();
2424 }
2425
2426 bool
2427 WorkArea::sync_render_preview()
2428 {
2429         return sync_render_preview(get_canvas_view()->get_time());
2430 }
2431
2432 void
2433 WorkArea::sync_render_preview_hook()
2434 {
2435         sync_render_preview(get_canvas_view()->get_time());
2436 }
2437
2438 void
2439 WorkArea::queue_scroll()
2440 {
2441 //      const synfig::RendDesc &rend_desc(get_canvas()->rend_desc());
2442
2443         const synfig::Point focus_point(get_focus_point());
2444
2445         const synfig::Real
2446                 new_x(focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2447                 new_y(focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2448
2449         const synfig::Real
2450                 old_x(last_focus_point[0]/pw+drawing_area->get_width()/2-w/2),
2451                 old_y(last_focus_point[1]/ph+drawing_area->get_height()/2-h/2);
2452
2453         // If the coordinates didn't change, we shouldn't queue a draw
2454         if(old_x==new_x && old_y==new_y)
2455                 return;
2456
2457         const int
2458                 dx(round_to_int(old_x)-round_to_int(new_x)),
2459                 dy(round_to_int(old_y)-round_to_int(new_y));
2460
2461         drawing_area->get_window()->scroll(-dx,-dy);
2462
2463         if (timecode_width && timecode_height)
2464         {
2465                 drawing_area->queue_draw_area(4,       4,    4+timecode_width,    4+timecode_height);
2466                 drawing_area->queue_draw_area(4-dx, 4-dy, 4-dx+timecode_width, 4-dy+timecode_height);
2467         }
2468
2469 #ifndef USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2470         if(canvas_interface->get_mode()&synfigapp::MODE_ANIMATE)
2471         {
2472                 int maxx = drawing_area->get_width()-1;
2473                 int maxy = drawing_area->get_height()-1;
2474
2475                 if (dx > 0)
2476                 {
2477                         drawing_area->queue_draw_area(      0, 0,       1, maxy);
2478                         drawing_area->queue_draw_area(maxx-dx, 0, maxx-dx, maxy);
2479                 }
2480                 else if (dx < 0)
2481                 {
2482                         drawing_area->queue_draw_area(   maxx, 0,    maxx, maxy);
2483                         drawing_area->queue_draw_area(    -dx, 0,     -dx, maxy);
2484                 }
2485                 if (dy > 0)
2486                 {
2487                         drawing_area->queue_draw_area(0,       0, maxx,       1);
2488                         drawing_area->queue_draw_area(0, maxy-dy, maxx, maxy-dy);
2489                 }
2490                 else if (dy < 0)
2491                 {
2492                         drawing_area->queue_draw_area(0,    maxy, maxx,    maxy);
2493                         drawing_area->queue_draw_area(0,     -dy, maxx,     -dy);
2494                 }
2495         }
2496 #endif // USE_FRAME_BACKGROUND_TO_SHOW_EDIT_MODE
2497
2498         last_focus_point=focus_point;
2499 }
2500
2501 void
2502 studio::WorkArea::zoom_in()
2503 {
2504         set_zoom(zoom*1.25);
2505 }
2506
2507 void
2508 studio::WorkArea::zoom_out()
2509 {
2510         set_zoom(zoom/1.25);
2511 }
2512
2513 void
2514 studio::WorkArea::zoom_fit()
2515 {
2516         // This really doesn't zoom to fit. Bug.
2517         zoom_norm();
2518 }
2519
2520 void
2521 studio::WorkArea::zoom_norm()
2522 {
2523         if(zoom==1.0)
2524                 set_zoom(prev_zoom);
2525         else
2526         {
2527                 prev_zoom=zoom;
2528                 set_zoom(1.0f);
2529         }
2530 }
2531
2532 gboolean
2533 studio::WorkArea::__render_preview(gpointer data)
2534 {
2535         WorkArea *work_area(static_cast<WorkArea*>(data));
2536
2537         // there's no point anyone trying to cancel the timer now - it's gone off already
2538         work_area->render_idle_func_id = 0;
2539
2540         work_area->queued=false;
2541         work_area->async_render_preview(work_area->get_canvas_view()->get_time());
2542
2543         return 0;
2544 }
2545
2546 void
2547 studio::WorkArea::queue_render_preview()
2548 {
2549         //synfig::info("queue_render_preview(): called for %s", get_canvas_view()->get_time().get_string().c_str());
2550
2551         if(queued==true)
2552         {
2553                 return;
2554                 //synfig::info("queue_render_preview(): already queued, unqueuing");
2555 /*              if(render_idle_func_id)
2556                         g_source_remove(render_idle_func_id);
2557                 render_idle_func_id=0;
2558                 queued=false;
2559 */
2560                 //async_renderer=0;
2561         }
2562
2563         if(dirty_trap_enabled)
2564         {
2565                 dirty_trap_queued++;
2566                 return;
2567         }
2568
2569         int queue_time=50;
2570
2571         if(rendering)
2572                 queue_time+=250;
2573
2574
2575         if(queued==false)
2576         {
2577                 //synfig::info("queue_render_preview(): (re)queuing...");
2578                 //render_idle_func_id=g_idle_add_full(G_PRIORITY_DEFAULT,__render_preview,this,NULL);
2579                 render_idle_func_id=g_timeout_add_full(
2580                         G_PRIORITY_DEFAULT,     // priority -
2581                         queue_time,                     // interval - the time between calls to the function, in milliseconds (1/1000ths of a second)
2582                         __render_preview,       // function - function to call
2583                         this,                           // data     - data to pass to function
2584                         NULL);                          // notify   - function to call when the idle is removed, or NULL
2585                 queued=true;
2586         }
2587 /*      else if(rendering)
2588         {
2589                 refreshes+=5;
2590                 dirty=true;
2591                 queue_draw();
2592         }
2593 */
2594 }
2595
2596 DirtyTrap::DirtyTrap(WorkArea *work_area):work_area(work_area)
2597 {
2598         work_area->dirty_trap_enabled=true;
2599
2600         work_area->dirty_trap_queued=0;
2601 }
2602
2603 DirtyTrap::~DirtyTrap()
2604 {
2605         work_area->dirty_trap_enabled=false;
2606         if(work_area->dirty_trap_queued)
2607                 work_area->queue_render_preview();
2608 }
2609
2610 void
2611 studio::WorkArea::queue_draw_preview()
2612 {
2613         drawing_area->queue_draw();
2614 }
2615
2616 void
2617 studio::WorkArea::set_cursor(const Gdk::Cursor& x)
2618 {
2619         drawing_area->get_window()->set_cursor(x);
2620 }
2621 void
2622 studio::WorkArea::set_cursor(Gdk::CursorType x)
2623 {
2624         drawing_area->get_window()->set_cursor(Gdk::Cursor(x));
2625 }
2626
2627 #include "iconcontroler.h"
2628
2629 void
2630 studio::WorkArea::refresh_cursor()
2631 {
2632 //      set_cursor(IconControler::get_tool_cursor(canvas_view->get_smach().get_state_name(),drawing_area->get_window()));
2633 }
2634
2635 void
2636 studio::WorkArea::reset_cursor()
2637 {
2638         drawing_area->get_window()->set_cursor(Gdk::Cursor(Gdk::TOP_LEFT_ARROW));
2639 //      set_cursor(Gdk::TOP_LEFT_ARROW);
2640 }
2641
2642 void
2643 studio::WorkArea::set_zoom(float z)
2644 {
2645         z=max(1.0f/128.0f,min(128.0f,z));
2646         if(z==zoom)
2647                 return;
2648         zoom = z;
2649         refresh_dimension_info();
2650         /*if(async_renderer)
2651         {
2652                 async_renderer->stop();
2653                 async_renderer=0;
2654         }*/
2655         refreshes+=5;
2656         async_update_preview();
2657         //queue_render_preview();
2658 }
2659
2660 void
2661 WorkArea::set_selected_value_node(etl::loose_handle<synfig::ValueNode> x)
2662 {
2663         if(x!=selected_value_node_)
2664         {
2665                 selected_value_node_=x;
2666                 queue_draw();
2667         }
2668 }
2669
2670 void
2671 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x)
2672 {
2673         renderer_set_.insert(x);
2674         x->set_work_area(this);
2675         queue_draw();
2676 }
2677
2678 void
2679 WorkArea::insert_renderer(const etl::handle<WorkAreaRenderer> &x, int priority)
2680 {
2681         x->set_priority(priority);
2682         insert_renderer(x);
2683 }
2684
2685 void
2686 WorkArea::erase_renderer(const etl::handle<WorkAreaRenderer> &x)
2687 {
2688         x->set_work_area(0);
2689         renderer_set_.erase(x);
2690         queue_draw();
2691 }
2692
2693 void
2694 WorkArea::resort_render_set()
2695 {
2696         std::set<etl::handle<WorkAreaRenderer> > tmp(
2697                 renderer_set_.begin(),
2698                 renderer_set_.end()
2699         );
2700         renderer_set_.swap(tmp);
2701         queue_draw();
2702 }