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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file preview.cpp
   3 **      \brief Preview implementation file
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include "preview.h"
  34 #include "app.h"
  35 #include "audiocontainer.h"
  36 #include <gtkmm/stock.h>
  37 #include <gtkmm/separator.h>
  38
  39 #include <synfig/target_scanline.h>
  40 #include <synfig/surface.h>
  41
  42 #include <algorithm>
  43 #include "asyncrenderer.h"
  44
  45 #include "general.h"
  46
  47 #endif
  48
  49 /* === U S I N G =========================================================== */
  50
  51 using namespace std;
  52 using namespace etl;
  53 using namespace synfig;
  54 using namespace studio;
  55
  56 /* === M A C R O S ========================================================= */
  57
  58 /* === G L O B A L S ======================================================= */
  59
  60 /* === P R O C E D U R E S ================================================= */
  61
  62 /* === M E T H O D S ======================================================= */
  63
  64 /* === E N T R Y P O I N T ================================================= */
  65
  66 class studio::Preview::Preview_Target : public Target_Scanline
  67 {
  68         Surface surface;
  69
  70         sigc::signal<void, const Preview_Target *>              signal_frame_done_;
  71
  72         int scanline;
  73
  74         double  tbegin,tend;
  75
  76         int             nframes,curframe;
  77
  78 public:
  79
  80         Preview_Target()
  81         {
  82                 set_remove_alpha();
  83                 tbegin = tend = 0;
  84                 scanline = 0;
  85                 nframes = curframe = 0;
  86         }
  87
  88         const RendDesc &get_rend_desc() const { return desc; }
  89
  90         virtual bool set_rend_desc(RendDesc *r)
  91         {
  92                 if(Target_Scanline::set_rend_desc(r))
  93                 {
  94                         /*synfig::warning("Succeeded in setting the desc to new one: %d x %d, %.2f fps [%.2f,%.2f]",
  95                                                         desc.get_w(),desc.get_h(),desc.get_frame_rate(),
  96                                         (float)desc.get_time_start(),(float)desc.get_time_end());*/
  97
  98                         surface.set_wh(desc.get_w(),desc.get_h());
  99
 100                         curframe = 0;
 101                         nframes = (int)floor((desc.get_time_end() - desc.get_time_start())*desc.get_frame_rate());
 102
 103                         tbegin = desc.get_time_start();
 104                         tend = tbegin + nframes/desc.get_frame_rate();
 105
 106                         return true;
 107                 }
 108                 return false;
 109         }
 110
 111         virtual bool start_frame(ProgressCallback */*cb*/=NULL)
 112         {
 113                 return true;
 114         }
 115
 116         virtual void end_frame()
 117         {
 118                 //ok... notify our subscribers...
 119                 signal_frame_done_(this);
 120                 curframe += 1;
 121                 //synfig::warning("Finished the frame stuff, and changed time to %.3f",t);
 122         }
 123
 124         virtual Color * start_scanline(int scanline)
 125         {
 126                 return surface[scanline];
 127         }
 128
 129         virtual bool end_scanline() {return true;}
 130
 131         sigc::signal<void, const Preview_Target *>      &signal_frame_done() {return signal_frame_done_;}
 132
 133         const Surface &get_surface() const {return surface;}
 134
 135         float get_time() const
 136         {
 137                 double time = ((nframes-curframe)/(double)nframes)*tbegin
 138                                         + ((curframe)/(double)nframes)*tend;
 139                 return time;
 140         }
 141 };
 142
 143 studio::Preview::Preview(const studio::CanvasView::LooseHandle &h, float zoom, float f)
 144 :canvasview(h),zoom(zoom),fps(f)
 145 {
 146         overbegin = false;
 147         overend = false;
 148 }
 149
 150 void studio::Preview::set_canvasview(const studio::CanvasView::LooseHandle &h)
 151 {
 152         canvasview = h;
 153
 154         if(canvasview)
 155         {
 156                 //perhaps reset override values...
 157                 const RendDesc &r = canvasview->get_canvas()->rend_desc();
 158                 if(r.get_frame_rate())
 159                 {
 160                         float rate = 1/r.get_frame_rate();
 161                         overbegin = false; begintime = r.get_time_start() + r.get_frame_start()*rate;
 162                         overend = false; endtime = r.get_time_start() + r.get_frame_end()*rate;
 163                 }
 164         }
 165 }
 166
 167 studio::Preview::~Preview()
 168 {
 169         signal_destroyed_(this); //tell anything that attached to us, we're dying
 170 }
 171
 172 void studio::Preview::render()
 173 {
 174         if(canvasview)
 175         {
 176                 //render using the preview target
 177                 etl::handle<Preview_Target>     target = new Preview_Target;
 178
 179                 //connect our information to his...
 180                 //synfig::warning("Connecting to the end frame function...");
 181                 target->signal_frame_done().connect(sigc::mem_fun(*this,&Preview::frame_finish));
 182
 183                 //set the options
 184                 //synfig::warning("Setting Canvas");
 185                 target->set_canvas(get_canvas());
 186                 target->set_quality(quality);
 187
 188                 //render description
 189                 RendDesc desc = get_canvas()->rend_desc();
 190
 191                 //set the global fps of the preview
 192                 set_global_fps(desc.get_frame_rate());
 193
 194                 desc.clear_flags();
 195
 196                 int neww = (int)floor(desc.get_w()*zoom+0.5),
 197                         newh = (int)floor(desc.get_h()*zoom+0.5);
 198                 float newfps = fps;
 199
 200                 /*synfig::warning("Setting the render description: %d x %d, %f fps, [%f,%f]",
 201                                                 neww,newh,newfps, overbegin?begintime:(float)desc.get_time_start(),
 202                                                 overend?endtime:(float)desc.get_time_end());*/
 203
 204                 desc.set_w(neww);
 205                 desc.set_h(newh);
 206                 desc.set_frame_rate(newfps);
 207
 208                 if(overbegin)
 209                 {
 210                         desc.set_time_start(std::max(begintime,(float)desc.get_time_start()));
 211                         //synfig::warning("Set start time to %.2f...",(float)desc.get_time_start());
 212                 }
 213                 if(overend)
 214                 {
 215                         desc.set_time_end(std::min(endtime,(float)desc.get_time_end()));
 216                         //synfig::warning("Set end time to %.2f...",(float)desc.get_time_end());
 217                 }
 218
 219                 //setting the description
 220
 221                 //HACK - add on one extra frame because the renderer can't render the last frame
 222                 desc.set_time_end(desc.get_time_end() + 1.000001/fps);
 223
 224                 target->set_rend_desc(&desc);
 225
 226                 //... first we must clear our current selves of space
 227                 frames.resize(0);
 228
 229                 //now tell it to go... with inherited prog. reporting...
 230                 //synfig::info("Rendering Asynchronously...");
 231                 if(renderer) renderer->stop();
 232                 renderer = new AsyncRenderer(target);
 233                 renderer->start();
 234         }
 235 }
 236
 237 static void free_guint8(const guint8 *mem)
 238 {
 239         free((void*)mem);
 240 }
 241
 242 void studio::Preview::frame_finish(const Preview_Target *targ)
 243 {
 244         //copy image with time to next frame (can just push back)
 245         FlipbookElem    fe;
 246         float time = targ->get_time();
 247         const Surface &surf = targ->get_surface();
 248         const RendDesc& r = targ->get_rend_desc();
 249
 250         //synfig::warning("Finished a frame at %f s",time);
 251
 252         //copy EVERYTHING!
 253         PixelFormat pf(PF_RGB);
 254         const int total_bytes(r.get_w()*r.get_h()*synfig::channels(pf));
 255
 256         //synfig::warning("Creating a buffer");
 257         unsigned char *buffer((unsigned char*)malloc(total_bytes));
 258
 259         if(!buffer)
 260                 return;
 261
 262         //convert all the pixels to the pixbuf... buffer... thing...
 263         //synfig::warning("Converting...");
 264         convert_color_format(buffer, surf[0], surf.get_w()*surf.get_h(), pf, App::gamma);
 265
 266         //load time
 267         fe.t = time;
 268         //uses and manages the memory for the buffer...
 269         //synfig::warning("Create a pixmap...");
 270         fe.buf =
 271         Gdk::Pixbuf::create_from_data(
 272                 buffer, // pointer to the data
 273                 Gdk::COLORSPACE_RGB, // the colorspace
 274                 ((pf&PF_A)==PF_A), // has alpha?
 275                 8, // bits per sample
 276                 surf.get_w(),   // width
 277                 surf.get_h(),   // height
 278                 surf.get_w()*synfig::channels(pf), // stride (pitch)
 279                 sigc::ptr_fun(free_guint8)
 280         );
 281
 282         //add the flipbook element to the list (assume time is correct)
 283         //synfig::info("Prev: Adding %f s to the list", time);
 284         frames.push_back(fe);
 285
 286         signal_changed()();
 287 }
 288
 289 #define IMAGIFY_BUTTON(button,stockid,tooltip)                                  \
 290         icon=manage(new Gtk::Image(Gtk::StockID(stockid),Gtk::ICON_SIZE_BUTTON));       \
 291         button->add(*icon);     \
 292         tooltips.set_tip(*button,tooltip);      \
 293         icon->set_padding(0,0);\
 294         icon->show();
 295
 296 Widget_Preview::Widget_Preview()
 297 :Gtk::Table(5,5,false),
 298 adj_time_scrub(0,0,1000,1,10,0),
 299 scr_time_scrub(adj_time_scrub),
 300 b_loop(/*_("Loop")*/),
 301 currentindex(0),
 302 audiotime(0),
 303 adj_sound(0,0,4),
 304 l_lasttime("0s"),
 305 playing(false)
 306 {
 307         //connect to expose events
 308         //signal_expose_event().connect(sigc::mem_fun(*this, &studio::Widget_Preview::redraw));
 309
 310         //manage all the change in values etc...
 311         adj_time_scrub.signal_value_changed().connect(sigc::mem_fun(*this,&Widget_Preview::slider_move));
 312         scr_time_scrub.signal_event().connect(sigc::mem_fun(*this,&Widget_Preview::scroll_move_event));
 313         draw_area.signal_expose_event().connect(sigc::mem_fun(*this,&Widget_Preview::redraw));
 314
 315         disp_sound.set_time_adjustment(&adj_sound);
 316         timedisp = -1;
 317
 318         //Set up signals to modify time value as it should be...
 319         disp_sound.signal_start_scrubbing().connect(sigc::mem_fun(*this,&Widget_Preview::scrub_updated));
 320         disp_sound.signal_scrub().connect(sigc::mem_fun(*this,&Widget_Preview::scrub_updated));
 321
 322         /*
 323         ---------------------------------
 324         |                                                               |
 325         |                                                               |
 326         |                                                               |
 327         |                                                               |
 328         |                                                               |
 329         |                                                               |
 330         |                                                               |
 331         ---------------------------------
 332         |loop|play|stop                                 | hbox
 333         |lastl|lastt|rerender|haltrend  | hbox
 334         |
 335         |sound                                                  |
 336         */
 337
 338         Gtk::HBox *hbox = 0;
 339         Gtk::Button *button = 0;
 340         Gtk::Image *icon = 0;
 341
 342         //should set up the dialog using attach etc.
 343         attach(draw_area, 0, 1, 0, 1);
 344         attach(scr_time_scrub, 0, 1, 1, 2, Gtk::EXPAND|Gtk::FILL, Gtk::SHRINK);
 345
 346         #if 1
 347
 348         //2nd row
 349         hbox = manage(new Gtk::HBox);
 350
 351         button = &b_loop;
 352         IMAGIFY_BUTTON(button,Gtk::Stock::REFRESH,_("Toggle Looping"));
 353         hbox->pack_start(b_loop,Gtk::PACK_SHRINK,0);
 354         //attach(b_loop,0,1,2,3,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK);
 355
 356         button = manage(new Gtk::Button(/*_("Play")*/));
 357         button->signal_clicked().connect(sigc::mem_fun(*this,&Widget_Preview::play));
 358         IMAGIFY_BUTTON(button,Gtk::Stock::GO_FORWARD,_("Play"));
 359         hbox->pack_start(*button,Gtk::PACK_SHRINK,0);
 360         //attach(*button,1,2,2,3,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK);
 361
 362         button = manage(new Gtk::Button(/*_("Stop")*/));
 363         button->signal_clicked().connect(sigc::mem_fun(*this,&Widget_Preview::stop));
 364         IMAGIFY_BUTTON(button,Gtk::Stock::NO,_("Stop"));
 365         hbox->pack_start(*button,Gtk::PACK_SHRINK,0);
 366         //attach(*button,2,3,2,3,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK);
 367
 368         //attack the stop render and erase all buttons to same line...
 369         {
 370                 Gtk::VSeparator *vsep = manage(new Gtk::VSeparator);
 371                 hbox->pack_start(*vsep,Gtk::PACK_SHRINK,0);
 372         }
 373
 374         button = manage(new Gtk::Button(/*_("Halt Render")*/));
 375         button->signal_clicked().connect(sigc::mem_fun(*this,&Widget_Preview::stoprender));
 376         IMAGIFY_BUTTON(button,Gtk::Stock::STOP,_("Halt Render"));
 377         hbox->pack_start(*button,Gtk::PACK_SHRINK,0);
 378         //attach(*button,2,3,3,4,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK);
 379
 380         button = manage(new Gtk::Button(/*_("Re-Preview")*/));
 381         button->signal_clicked().connect(sigc::mem_fun(*this,&Widget_Preview::repreview));
 382         IMAGIFY_BUTTON(button,Gtk::Stock::CONVERT,_("Re-Preview"));
 383         hbox->pack_start(*button,Gtk::PACK_SHRINK,0);
 384         //attach(*button,0,2,4,5,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK);
 385
 386         button = manage(new Gtk::Button(/*_("Erase All")*/));
 387         button->signal_clicked().connect(sigc::mem_fun(*this,&Widget_Preview::eraseall));
 388         IMAGIFY_BUTTON(button,Gtk::Stock::DELETE,_("Erase All"));
 389         hbox->pack_start(*button,Gtk::PACK_SHRINK,0);
 390         //attach(*button,2,3,4,5,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK);
 391
 392         hbox->show_all();
 393         attach(*hbox,0,1,2,3,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
 394
 395         //3rd row
 396         hbox = manage(new Gtk::HBox);
 397         {
 398                 Gtk::Label *label = manage(new Gtk::Label(_("Last Rendered: ")));
 399                 //label->show();
 400                 hbox->pack_start(*label,Gtk::PACK_SHRINK,10);
 401                 //attach(*manage(new Gtk::Label(_("Last Rendered: "))),0,1,3,4,Gtk::SHRINK,Gtk::SHRINK);
 402         }
 403         //l_lasttime.show();
 404         hbox->pack_start(l_lasttime,Gtk::PACK_SHRINK,0);
 405         hbox->show_all();
 406         attach(*hbox,0,1,3,4,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK);
 407         //attach(l_lasttime,0,1,3,4,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK);
 408
 409         //5th row
 410         disp_sound.set_size_request(-1,32);
 411         attach(disp_sound,0,1,4,5,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK);
 412
 413         show_all();
 414
 415         //if(draw_area.get_window()) gc_area = Gdk::GC::create(draw_area.get_window());
 416         #endif
 417 }
 418
 419 studio::Widget_Preview::~Widget_Preview()
 420 {
 421 }
 422
 423 void studio::Widget_Preview::update()
 424 {
 425         //the meat goes in this locker...
 426         double time = adj_time_scrub.get_value();
 427
 428         //find the frame and display it...
 429         if(preview)
 430         {
 431                 //synfig::warning("Updating at %.3f s",time);
 432
 433                 //use time to find closest frame...
 434                 studio::Preview::FlipBook::const_iterator       beg = preview->begin(),end = preview->end();
 435                 studio::Preview::FlipBook::const_iterator       i;
 436
 437                 i = beg;
 438
 439                 //go to current hint if need be...
 440                 if(currentindex >= 0 && currentindex < (int)preview->numframes())
 441                 {
 442                         i = beg+currentindex;
 443                 }
 444
 445                 //we can't have a picture if there are none to get
 446                 if(beg != end)
 447                 {
 448                         //don't bother with binary search it will just be slower...
 449
 450                         //synfig::info("Search for time %f",time);
 451
 452                         //incrementally go in either direction
 453                         //(bias downward towards beg, because that's what we want)
 454                         for(;i != end;++i)
 455                         {
 456                                 //synfig::info("Look at %f",i->t);
 457                                 if(i->t > time) break;
 458                                 //synfig::info("Go past...");
 459                         }
 460
 461                         //if(i!=beg)--i;
 462
 463                         //bias down, so we can't be at end... and it still is valid...
 464                         for(;i != beg;)
 465                         {
 466                                 --i;
 467                                 //synfig::info("Look at %f",i->t);
 468                                 if(i->t <= time) break;
 469                                 //synfig::info("Go past...");
 470                         }
 471
 472                         /*i = preview->begin(); end = preview->end();
 473                         if(i == end) return;
 474
 475                         j = i;
 476                         for(;i != end; j = i++)
 477                         {
 478                                 if(i->t > time) break;
 479                         }*/
 480
 481                         //we should be at a valid edge since we biased downward
 482
 483                         //don't get the closest, round down... (if we can)
 484                         if(i == end)
 485                         {
 486                                 synfig::error("i == end....");
 487                                 //assert(0);
 488                                 currentbuf.clear();
 489                                 currentindex = 0;
 490                                 timedisp = -1;
 491                         }else
 492                         {
 493                                 currentbuf = i->buf;
 494                                 currentindex = i-beg;
 495                                 if(timedisp != i->t)
 496                                 {
 497                                         timedisp = i->t;
 498                                         //synfig::warning("Update at: %f seconds (%f s)",time,timedisp);
 499                                         preview_draw();
 500                                         //synfig::warning("success!");
 501                                 }
 502                         }
 503                 }
 504         }
 505
 506         if(disp_sound.get_profile() && adj_sound.get_value() != time)
 507         {
 508                 //timeupdate = time;
 509
 510                 //Set the position of the sound (short circuited for sound modifying the time)
 511
 512                 disp_sound.set_position(time);
 513                 disp_sound.queue_draw();
 514         }
 515 }
 516 void studio::Widget_Preview::preview_draw()
 517 {
 518         draw_area.queue_draw();//on_expose_event();
 519 }
 520
 521 bool studio::Widget_Preview::redraw(GdkEventExpose */*heh*/)
 522 {
 523         //And render the drawing area
 524         Glib::RefPtr<Gdk::Pixbuf> pxnew, px = currentbuf;
 525
 526         if(!px || draw_area.get_height() == 0
 527                 || px->get_height() == 0 || px->get_width() == 0 /*|| is_visible()*/) //made not need this line
 528                 return true;
 529
 530         //figure out the scaling factors...
 531         float sx, sy;
 532         int nw,nh;
 533
 534         sx = draw_area.get_width() / (float)px->get_width();
 535         sy = draw_area.get_height() / (float)px->get_height();
 536
 537         //synfig::info("widget_preview redraw: now to scale the bitmap: %.3f x %.3f",sx,sy);
 538
 539         //round to smallest scale (fit entire thing in window without distortion)
 540         if(sx > sy) sx = sy;
 541         //else sy = sx;
 542
 543         //scale to a new pixmap and then copy over to the window
 544         nw = (int)(px->get_width()*sx);
 545         nh = (int)(px->get_height()*sx);
 546
 547         if(nw == 0 || nh == 0)return true;
 548
 549         pxnew = px->scale_simple(nw,nh,Gdk::INTERP_NEAREST);
 550
 551         //synfig::info("Now to draw to the window...");
 552         //copy to window
 553         Glib::RefPtr<Gdk::Window>       wind = draw_area.get_window();
 554         Glib::RefPtr<Gdk::Drawable> surf = Glib::RefPtr<Gdk::Drawable>::cast_static(wind);
 555         Glib::RefPtr<Gdk::GC>           gc = Gdk::GC::create(wind);
 556
 557         {
 558                 Gdk::Rectangle r(0,0,draw_area.get_width(),draw_area.get_height());
 559                 draw_area.get_window()->begin_paint_rect(r);
 560         }
 561
 562         if(!wind) synfig::warning("The destination window is broken...");
 563         if(!surf) synfig::warning("The destination is not drawable...");
 564
 565         if(surf)
 566         {
 567                 /* Options for drawing...
 568                         1) store with alpha, then clear and render with alpha every frame
 569                                 - more time consuming
 570                                 + more expandable
 571                         2) store with just pixel info
 572                                 - less expandable
 573                                 + faster
 574                                 + better memory footprint
 575                 */
 576                 //px->composite(const Glib::RefPtr<Gdk::Pixbuf>& dest, int dest_x, int dest_y, int dest_width, int dest_height, double offset_x, double offset_y, double scale_x, double scale_y, InterpType interp_type, int overall_alpha) const
 577
 578                 surf->draw_pixbuf(
 579                         gc, //GC
 580                         pxnew, //pixbuf
 581                         0, 0,   // Source X and Y
 582                         0, 0,   // Dest X and Y
 583                         -1,-1,  // Width and Height
 584                         Gdk::RGB_DITHER_NONE, // RgbDither
 585                         0, 0 // Dither offset X and Y
 586                 );
 587
 588                 if(timedisp >= 0)
 589                 {
 590                         Glib::RefPtr<Pango::Layout> layout(Pango::Layout::create(get_pango_context()));
 591                         Glib::ustring timecode(Time((double)timedisp).round(preview->get_global_fps())
 592                                                                                                                         .get_string(preview->get_global_fps(),
 593                                                                                                                                                         App::get_time_format()));
 594                         //synfig::info("Time for preview draw is: %s for time %g", timecode.c_str(), adj_time_scrub.get_value());
 595
 596                         gc->set_rgb_fg_color(Gdk::Color("#FF0000"));
 597                         layout->set_text(timecode);
 598                         surf->draw_layout(gc,4,4,layout);
 599                 }
 600         }
 601
 602         draw_area.get_window()->end_paint();
 603
 604         //synfig::warning("Refresh the draw area");
 605         //make sure the widget refreshes
 606
 607         return false;
 608 }
 609
 610 bool studio::Widget_Preview::play_update()
 611 {
 612         float diff = timer.pop_time();
 613         //synfig::info("Play update: diff = %.2f",diff);
 614
 615         if(playing)
 616         {
 617                 //we go to the next one...
 618                 double time = adj_time_scrub.get_value() + diff;
 619
 620                 //adjust it to be synced with the audio if it can...
 621                 {
 622                         double newtime = audiotime;
 623                         if(audio && audio->is_playing()) audio->get_current_time(newtime);
 624
 625                         if(newtime != audiotime)
 626                         {
 627                                 //synfig::info("Adjusted time from %.3lf to %.3lf", time,newtime);
 628                                 time = audiotime = newtime;
 629                         }
 630                 }
 631
 632                 //Looping conditions...
 633                 if(time >= adj_time_scrub.get_upper())
 634                 {
 635                         if(get_loop_flag())
 636                         {
 637                                 time = adj_time_scrub.get_lower();// + time-adj_time_scrub.get_upper();
 638                                 currentindex = 0;
 639                         }else
 640                         {
 641                                 time = adj_time_scrub.get_upper();
 642                                 adj_time_scrub.set_value(time);
 643                                 play_stop();
 644                                 update();
 645
 646                                 //synfig::info("Play Stopped: time set to %f",adj_time_scrub.get_value());
 647                                 return false;
 648                         }
 649                 }
 650
 651                 //set the new time...
 652                 adj_time_scrub.set_value(time);
 653                 adj_time_scrub.value_changed();
 654
 655                 //update the window to the correct image we might want to do this later...
 656                 //update();
 657                 //synfig::warning("Did update pu");
 658         }
 659         return true;
 660 }
 661
 662 void studio::Widget_Preview::slider_move()
 663 {
 664         //if(!playing)
 665         {
 666                 update();
 667                 //synfig::warning("Did update sm");
 668         }
 669 }
 670
 671 //for other things updating the value changed signal...
 672 void studio::Widget_Preview::scrub_updated(double t)
 673 {
 674         stop();
 675
 676         //Attempt at being more accurate... the time is adjusted to be exactly where the sound says it is
 677         //double oldt = t;
 678         if(audio)
 679         {
 680                 if(!audio->isPaused())
 681                 {
 682                         audio->get_current_time(t);
 683                 }
 684         }
 685
 686         //synfig::info("Scrubbing to %.3f, setting adj to %.3f",oldt,t);
 687
 688         if(adj_time_scrub.get_value() != t)
 689         {
 690                 adj_time_scrub.set_value(t);
 691                 adj_time_scrub.value_changed();
 692         }
 693 }
 694
 695 void studio::Widget_Preview::disconnect_preview(Preview *prev)
 696 {
 697         if(prev == preview)
 698         {
 699                 preview = 0;
 700                 prevchanged.disconnect();
 701         }
 702 }
 703
 704 void studio::Widget_Preview::set_preview(etl::handle<Preview>   prev)
 705 {
 706         preview = prev;
 707
 708         synfig::info("Setting preview");
 709
 710         //stop playing the mini animation...
 711         stop();
 712
 713         if(preview)
 714         {
 715                 //set the internal values
 716                 float rate = preview->get_fps();
 717                 synfig::info("  FPS = %f",rate);
 718                 if(rate)
 719                 {
 720                         float start = preview->get_begintime();
 721                         float end = preview->get_endtime();
 722
 723                         rate = 1/rate;
 724
 725                         adj_time_scrub.set_lower(start);
 726                         adj_time_scrub.set_upper(end);
 727                         adj_time_scrub.set_value(start);
 728                         adj_time_scrub.set_step_increment(rate);
 729                         adj_time_scrub.set_page_increment(10*rate);
 730
 731                         //if the begin time and the end time are the same there is only a single frame
 732                         singleframe = end==start;
 733                 }else
 734                 {
 735                         adj_time_scrub.set_lower(0);
 736                         adj_time_scrub.set_upper(0);
 737                         adj_time_scrub.set_value(0);
 738                         adj_time_scrub.set_step_increment(0);
 739                         adj_time_scrub.set_page_increment(0);
 740                         singleframe = true;
 741                 }
 742
 743                 //connect so future information will be found...
 744                 prevchanged = prev->signal_changed().connect(sigc::mem_fun(*this,&Widget_Preview::whenupdated));
 745                 prev->signal_destroyed().connect(sigc::mem_fun(*this,&Widget_Preview::disconnect_preview));
 746                 update();
 747                 //synfig::warning("Did update sp");
 748                 queue_draw();
 749         }
 750 }
 751
 752 void studio::Widget_Preview::whenupdated()
 753 {
 754         l_lasttime.set_text((Time((double)(--preview->end())->t)
 755                                                         .round(preview->get_global_fps())
 756                                                         .get_string(preview->get_global_fps(),App::get_time_format())));
 757         update();
 758 }
 759
 760 void studio::Widget_Preview::clear()
 761 {
 762         preview = 0;
 763         prevchanged.disconnect();
 764 }
 765
 766 void studio::Widget_Preview::play()
 767 {
 768         if(preview && !playing)
 769         {
 770                 //synfig::info("Playing at %lf",adj_time_scrub.get_value());
 771                 //audiotime = adj_time_scrub.get_value();
 772                 playing = true;
 773
 774                 //adj_time_scrub.set_value(adj_time_scrub.get_lower());
 775                 update(); //we don't want to call play update because that will try to advance the timer
 776                 //synfig::warning("Did update p");
 777
 778                 //approximate length of time in seconds, right?
 779                 double rate = /*std::min(*/adj_time_scrub.get_step_increment()/*,1/30.0)*/;
 780                 int timeout = (int)floor(1000*rate);
 781
 782                 //synfig::info("        rate = %.3lfs = %d ms",rate,timeout);
 783
 784                 signal_play_(adj_time_scrub.get_value());
 785
 786                 //play the audio...
 787                 if(audio) audio->play(adj_time_scrub.get_value());
 788
 789                 timecon = Glib::signal_timeout().connect(sigc::mem_fun(*this,&Widget_Preview::play_update),timeout);
 790                 timer.reset();
 791         }
 792
 793 }
 794
 795 void studio::Widget_Preview::play_stop()
 796 {
 797         playing = false;
 798         signal_stop()();
 799         if(audio) audio->stop(); //!< stop the audio
 800         //synfig::info("Stopping...");
 801 }
 802
 803 void studio::Widget_Preview::stop()
 804 {
 805         //synfig::warning("stopping");
 806         play_stop();
 807         timecon.disconnect();
 808 }
 809
 810 bool studio::Widget_Preview::scroll_move_event(GdkEvent *event)
 811 {
 812         switch(event->type)
 813         {
 814                 case GDK_BUTTON_PRESS:
 815                 {
 816                         if(event->button.button == 1 || event->button.button == 3)
 817                         {
 818                                 stop();
 819                         }
 820                 }
 821
 822                 default: break;
 823         }
 824
 825         return false;
 826 }
 827
 828 void studio::Widget_Preview::set_audioprofile(etl::handle<AudioProfile> p)
 829 {
 830         disp_sound.set_profile(p);
 831 }
 832
 833 void studio::Widget_Preview::set_audio(etl::handle<AudioContainer> a)
 834 {
 835         audio = a;
 836
 837         //disconnect any previous signals
 838         scrstartcon.disconnect(); scrstopcon.disconnect(); scrubcon.disconnect();
 839
 840         //connect the new signals
 841         scrstartcon = disp_sound.signal_start_scrubbing().connect(sigc::mem_fun(*a,&AudioContainer::start_scrubbing));
 842         scrstopcon = disp_sound.signal_stop_scrubbing().connect(sigc::mem_fun(*a,&AudioContainer::stop_scrubbing));
 843         scrubcon = disp_sound.signal_scrub().connect(sigc::mem_fun(*a,&AudioContainer::scrub));
 844 }
 845
 846 void studio::Widget_Preview::seek(float t)
 847 {
 848         stop();
 849         adj_time_scrub.set_value(t);
 850 }
 851
 852 void studio::Widget_Preview::repreview()
 853 {
 854         if(preview)
 855         {
 856                 stoprender();
 857                 stop();
 858                 preview->get_canvasview()->preview_option();
 859         }
 860 }
 861
 862 void studio::Widget_Preview::stoprender()
 863 {
 864         if(preview)
 865         {
 866                 // don't crash if the render has already been stopped
 867                 if (!preview->renderer)
 868                         return;
 869
 870                 if (preview->renderer->updating)
 871                         preview->renderer->stop();
 872                 else
 873                         preview->renderer.detach();
 874         }
 875 }
 876
 877 void studio::Widget_Preview::eraseall()
 878 {
 879         stop();
 880         stoprender();
 881
 882         currentbuf.clear();
 883         currentindex = 0;
 884         timedisp = 0;
 885         queue_draw();
 886
 887         if(preview)
 888         {
 889                 preview->clear();
 890         }
 891 }