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