synfig-studio/tags/synfigstudio_0_61_07/src/gtkmm/workarea.cpp

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