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

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