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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file dock_navigator.cpp
   3 **      \brief Dock Nagivator File
   4 **
   5 **      $Id: dock_navigator.cpp,v 1.3 2005/01/12 00:31:11 darco Exp $
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002 Robert B. Quattlebaum Jr.
   9 **
  10 **      This software and associated documentation
  11 **      are CONFIDENTIAL and PROPRIETARY property of
  12 **      the above-mentioned copyright holder.
  13 **
  14 **      You may not copy, print, publish, or in any
  15 **      other way distribute this software without
  16 **      a prior written agreement with
  17 **      the copyright holder.
  18 **      \endlegal
  19 */
  20 /* ========================================================================= */
  21
  22 /* === H E A D E R S ======================================================= */
  23
  24 #ifdef USING_PCH
  25 #       include "pch.h"
  26 #else
  27 #ifdef HAVE_CONFIG_H
  28 #       include <config.h>
  29 #endif
  30
  31 #include "dock_navigator.h"
  32 #include "canvasview.h"
  33 #include "workarea.h"
  34
  35 #include <cassert>
  36 #include <synfig/canvas.h>
  37 #include <synfig/context.h>
  38 #include <synfig/target_scanline.h>
  39 #include <synfig/surface.h>
  40
  41 #include <gtkmm/separator.h>
  42
  43 #include "asyncrenderer.h"
  44
  45 #endif
  46
  47 /* === U S I N G =========================================================== */
  48
  49 using namespace std;
  50 using namespace etl;
  51 using namespace synfig;
  52
  53 /* === M A C R O S ========================================================= */
  54
  55 const double log_10_2 = log(2.0);
  56
  57 /* === G L O B A L S ======================================================= */
  58
  59 /* === P R O C E D U R E S ================================================= */
  60
  61 /* === M E T H O D S ======================================================= */
  62
  63 /* === E N T R Y P O I N T ================================================= */
  64 studio::Widget_NavView::Widget_NavView(CanvasView::LooseHandle cv)
  65 :canvview(cv),
  66 adj_zoom(0,-4,4,1,2),
  67 surface(new synfig::Surface)
  68 {
  69         attach(drawto,0,4,0,1);
  70
  71         attach(*manage(new Gtk::HSeparator),0,4,1,2,Gtk::SHRINK|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
  72
  73         //zooming stuff
  74         attach(zoom_print,0,1,2,3,Gtk::SHRINK|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
  75         zoom_print.set_size_request(40,-1);
  76
  77         Gtk::HScale *s = manage(new Gtk::HScale(adj_zoom));
  78         s->set_draw_value(false);
  79         //s->set_update_policy(Gtk::UPDATE_DELAYED);
  80         //s->signal_event().connect(sigc::mem_fun(*this,&Dock_Navigator::on_scroll_event));
  81         attach(*s,1,4,2,3,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
  82
  83         show_all();
  84
  85         adj_zoom.signal_value_changed().connect(sigc::mem_fun(*this,&Widget_NavView::on_number_modify));
  86
  87         if(cv)
  88         {
  89                 drawto.signal_expose_event().connect(sigc::mem_fun(*this,&Widget_NavView::on_expose_draw));
  90                 drawto.signal_event().connect(sigc::mem_fun(*this,&Widget_NavView::on_mouse_event));
  91
  92                 drawto.add_events(Gdk::BUTTON_MOTION_MASK|Gdk::BUTTON_PRESS_MASK);
  93
  94                 //get_canvas_view()->canvas_interface()->signal_dirty_preview()
  95                 //                              .connect(sigc::mem_fun(*this,&Widget_NavView::on_dirty_preview));
  96                 get_canvas_view()->work_area->signal_rendering()
  97                                                 .connect(sigc::mem_fun(*this,&Widget_NavView::on_dirty_preview));
  98
  99                 get_canvas_view()->work_area->signal_view_window_changed()
 100                                                 .connect(sigc::mem_fun(*this,&Widget_NavView::on_workarea_view_change));
 101
 102                 //update with this canvas' view
 103                 on_workarea_view_change();
 104
 105                 dirty = true;
 106                 queue_draw();
 107         }
 108
 109         adj_zoom.set_value(0);
 110 }
 111
 112 studio::Widget_NavView::~Widget_NavView()
 113 {
 114 }
 115
 116
 117 static void freegu8(const guint8 *p)
 118 {
 119         delete [] p;
 120 }
 121
 122 void studio::Widget_NavView::on_start_render()
 123 {
 124         if(dirty)
 125         {
 126                 //synfig::warning("Nav: Starting render");
 127                 //synfig::warning("Nav: Rendering canvas");
 128                 etl::handle<Target_Scanline>    targ = surface_target(surface.get());
 129
 130                 targ->set_canvas(get_canvas_view()->get_canvas());
 131                 targ->set_remove_alpha();
 132                 targ->set_avoid_time_sync();
 133                 targ->set_quality(get_canvas_view()->get_work_area()->get_quality());
 134                 //synfig::info("Set the quality level to: %d", get_canvas_view()->get_work_area()->get_quality());
 135
 136                 //this should set it to render a single frame
 137                 RendDesc        r = get_canvas_view()->get_canvas()->rend_desc();
 138                 r.set_time(get_canvas_view()->canvas_interface()->get_time());
 139
 140                 //this changes the size of the canvas to the closest thing we can find
 141                 int sw = r.get_w(), sh = r.get_h();
 142
 143                 //synfig::warning("Nav: source image is %d x %d", sw,sh);
 144
 145                 //resize so largest dimension is 128
 146                 int dw = sw > sh ? 128 : sw*128/sh,
 147                         dh = sh > sw ? 128 : sh*128/sw;
 148
 149                 //synfig::warning("Nav: dest image is %d x %d", dw,dh);
 150
 151                 r.set_w(dw);
 152                 r.set_h(dh);
 153
 154                 //get the pw and ph
 155                 //float pw = r.get_pw();
 156                 //float ph = r.get_ph();
 157
 158                 //synfig::warning("Nav: pixel size is %f x %f", pw,ph);
 159
 160                 //this renders that single frame
 161                 targ->set_rend_desc(&r);
 162
 163                 //synfig::warning("Nav: Building async renderer and starting it...");
 164
 165                 renderer = new AsyncRenderer(targ);
 166                 renderer->signal_success().connect(sigc::mem_fun(*this,&Widget_NavView::on_finish_render));
 167                 renderer->start();
 168                 dirty = false;
 169         }
 170 }
 171
 172 void studio::Widget_NavView::on_finish_render()
 173 {
 174         //convert it into our pixmap
 175         PixelFormat pf(PF_RGB);
 176
 177         //synfig::warning("Nav: It hath succeeded!!!");
 178
 179         //assert(renderer && renderer->has_success());
 180         DEBUGPOINT();
 181         //synfig::warning("Nav: now we know it really succeeded");
 182         if(!*surface)
 183         {
 184                 synfig::warning("dock_navigator: Bad surface");
 185                 return;
 186         }
 187
 188         int w = 0, h = 0;
 189         int dw = surface->get_w();
 190         int dh = surface->get_h();
 191
 192         if(prev)
 193         {
 194                 w = prev->get_width();
 195                 h = prev->get_height();
 196         }
 197
 198         if(w != dw || h != dh || !prev)
 199         {
 200                 const int total_bytes(dw*dh*synfig::channels(pf));
 201
 202                 //synfig::warning("Nav: Updating the pixbuf to be the right size, etc. (%d bytes)", total_bytes);
 203
 204                 prev.clear();
 205                 guint8 *bytes = new guint8[total_bytes]; //24 bits per pixel
 206
 207                 //convert into our buffered dataS
 208                 //synfig::warning("Nav: converting color format into buffer");
 209                 convert_color_format((unsigned char *)bytes, (*surface)[0], dw*dh, pf, App::gamma);
 210
 211                 prev =
 212                 Gdk::Pixbuf::create_from_data(
 213                         bytes,  // pointer to the data
 214                         Gdk::COLORSPACE_RGB, // the colorspace
 215                         ((pf&PF_A)==PF_A), // has alpha?
 216                         8, // bits per sample
 217                         dw,     // width
 218                         dh,     // height
 219                         dw*synfig::channels(pf), // stride (pitch)
 220                         SigC::slot(freegu8)
 221                 );
 222         }
 223         else
 224         {
 225                 //synfig::warning("Nav: Don't need to resize");
 226                 //convert into our buffered dataS
 227                 //synfig::warning("Nav: converting color format into buffer");
 228                 if(prev) //just in case we're stupid
 229                 {
 230                         convert_color_format((unsigned char *)prev->get_pixels(), (*surface)[0], dw*dh, pf, App::gamma);
 231                 }
 232         }
 233         queue_draw();
 234 }
 235
 236 /*      zoom slider is on exponential scale
 237
 238         map: -4,4 -> small number,1600 with 100 at 0
 239
 240         f(x) = 100*2^x
 241 */
 242
 243 static double unit_to_zoom(double f)
 244 {
 245         return pow(2.0,f);
 246 }
 247
 248 static double zoom_to_unit(double f)
 249 {
 250         if(f > 0)
 251         {
 252                 return log(f) / log_10_2;
 253         }else return -999999.0;
 254 }
 255
 256 bool studio::Widget_NavView::on_expose_draw(GdkEventExpose *exp)
 257 {
 258         //print out the zoom
 259         //HACK kind of...
 260         //zoom_print.set_text(strprintf("%.1f%%",100*unit_to_zoom(adj_zoom.get_value())));
 261
 262         //draw the good stuff
 263         on_start_render();
 264
 265         //if we've got a preview etc. display it...
 266         if(get_canvas_view() && prev)
 267         {
 268                 //axis transform from units to pixel coords
 269                 float xaxis = 0, yaxis = 0;
 270
 271                 int canvw = get_canvas_view()->get_canvas()->rend_desc().get_w();
 272                 //int canvh = get_canvas_view()->get_canvas()->rend_desc().get_h();
 273
 274                 float pw = get_canvas_view()->get_canvas()->rend_desc().get_pw();
 275                 float ph = get_canvas_view()->get_canvas()->rend_desc().get_ph();
 276
 277                 int w = prev->get_width();
 278                 int h = prev->get_height();
 279
 280                 //scale up/down to the nearest pixel ratio...
 281                 //and center in center
 282                 int offx=0, offy=0;
 283
 284                 float sx, sy;
 285                 int nw,nh;
 286
 287                 sx = drawto.get_width() / (float)w;
 288                 sy = drawto.get_height() / (float)h;
 289
 290                 //synfig::warning("Nav redraw: now to scale the bitmap: %.3f x %.3f",sx,sy);
 291
 292                 //round to smallest scale (fit entire thing in window without distortion)
 293                 if(sx > sy) sx = sy;
 294                 //else sy = sx;
 295
 296                 //scaling and stuff
 297                 // the point to navpixel space conversion should be:
 298                 //              (navpixels / canvpixels) * (canvpixels / canvsize)
 299                 //      or (navpixels / prevpixels) * (prevpixels / navpixels)
 300                 xaxis = sx * w / (float)canvw;
 301                 yaxis = xaxis/ph;
 302                 xaxis /= pw;
 303
 304                 //scale to a new pixmap and then copy over to the window
 305                 nw = (int)(w*sx);
 306                 nh = (int)(h*sx);
 307
 308                 //must now center to be cool
 309                 offx = (drawto.get_width() - nw)/2;
 310                 offy = (drawto.get_height() - nh)/2;
 311
 312                 //trivial escape
 313                 if(nw == 0 || nh == 0)return true;
 314
 315                 //draw to drawing area
 316                 Glib::RefPtr<Gdk::GC>   gc = Gdk::GC::create(drawto.get_window());
 317
 318                 //synfig::warning("Nav: Scaling pixmap to off (%d,%d) with size (%d,%d)", offx,offy,nw, nh);
 319                 Glib::RefPtr<Gdk::Pixbuf> scalepx = prev->scale_simple(nw,nh,Gdk::INTERP_NEAREST);
 320
 321                 //synfig::warning("Nav: Drawing scaled bitmap");
 322                 drawto.get_window()->draw_pixbuf(
 323                         gc, //GC
 324                         scalepx, //pixbuf
 325                         0, 0,   // Source X and Y
 326                         offx, offy,     // Dest X and Y
 327                         -1,-1,  // Width and Height
 328                         Gdk::RGB_DITHER_MAX, // RgbDither
 329                         2, 2 // Dither offset X and Y
 330                 );
 331
 332                 //draw fancy red rectangle around focus point
 333                 const Point &wtl = get_canvas_view()->work_area->get_window_tl(),
 334                                         &wbr = get_canvas_view()->work_area->get_window_br();
 335
 336                 gc->set_rgb_fg_color(Gdk::Color("#ff0000"));
 337                 gc->set_line_attributes(2,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
 338
 339                 //it must be clamped to the drawing area though
 340                 int l=0,rw=0,t=0,rh=0;
 341                 const Point fp = -get_canvas_view()->work_area->get_focus_point();
 342
 343                 //get focus point in normal space
 344                 rw = (int)(abs((wtl[0]-wbr[0])*xaxis));
 345                 rh = (int)(abs((wtl[1]-wbr[1])*yaxis));
 346
 347                 //transform into pixel space
 348                 l = (int)(drawto.get_width()/2 + fp[0]*xaxis - rw/2);
 349                 t = (int)(drawto.get_height()/2 + fp[1]*yaxis - rh/2);
 350
 351                 //coord system:
 352                 // tl : (offx,offy)
 353                 // axis multipliers = xaxis,yaxis
 354                 //synfig::warning("Nav: tl (%f,%f), br (%f,%f)", wtl[0],wtl[1],wbr[0],wbr[1]);
 355                 //synfig::warning("Nav: tl (%f,%f), br (%f,%f)", wtl[0],wtl[1],wbr[0],wbr[1]);
 356                 //synfig::warning("Nav: Drawing Rectangle (%d,%d) with dim (%d,%d)", l,t,rw,rh);
 357                 drawto.get_window()->draw_rectangle(gc,false,l,t,rw,rh);
 358         }
 359
 360         return false; //draw everything else too
 361 }
 362
 363 void studio::Widget_NavView::on_dirty_preview()
 364 {
 365         dirty = true;
 366         queue_draw();
 367 }
 368
 369 bool studio::Widget_NavView::on_scroll_event(GdkEvent *event)
 370 {
 371         if(get_canvas_view() && get_canvas_view()->get_work_area())
 372         {
 373                 double z = unit_to_zoom(adj_zoom.get_value());
 374
 375                 switch(event->type)
 376                 {
 377                         case GDK_BUTTON_PRESS:
 378                         {
 379                                 if(event->button.button == 1)
 380                                 {
 381                                         scrolling = true;
 382                                         get_canvas_view()->get_work_area()->set_zoom(z);
 383                                         scrolling = false;
 384                                 }
 385                                 break;
 386                         }
 387
 388                         case GDK_MOTION_NOTIFY:
 389                         {
 390                                 if(Gdk::ModifierType(event->motion.state) & Gdk::BUTTON1_MASK)
 391                                 {
 392                                         scrolling = true;
 393                                         get_canvas_view()->get_work_area()->set_zoom(z);
 394                                         scrolling = false;
 395                                 }
 396                                 break;
 397                         }
 398
 399                         default:
 400                                 break;
 401                 }
 402         }
 403
 404         return false;
 405 }
 406
 407 void studio::Widget_NavView::on_number_modify()
 408 {
 409         double z = unit_to_zoom(adj_zoom.get_value());
 410         zoom_print.set_text(strprintf("%.1f%%",z*100.0));
 411         //synfig::warning("Updating zoom to %f",adj_zoom.get_value());
 412
 413         if(get_canvas_view() && z != get_canvas_view()->get_work_area()->get_zoom())
 414         {
 415                 scrolling = true;
 416                 get_canvas_view()->get_work_area()->set_zoom(z);
 417                 scrolling = false;
 418         }
 419 }
 420
 421 void studio::Widget_NavView::on_workarea_view_change()
 422 {
 423         double wz = get_canvas_view()->get_work_area()->get_zoom();
 424         double z = zoom_to_unit(wz);
 425
 426         //synfig::warning("Updating zoom to %f -> %f",wz,z);
 427         if(!scrolling && z != adj_zoom.get_value())
 428         {
 429                 adj_zoom.set_value(z);
 430                 //adj_zoom.value_changed();
 431         }
 432         queue_draw();
 433 }
 434
 435 bool studio::Widget_NavView::on_mouse_event(GdkEvent * e)
 436 {
 437         Point p;
 438         bool    setpos = false;
 439
 440         if(e->type == GDK_BUTTON_PRESS && e->button.button == 1)
 441         {
 442                 p[0] = e->button.x - drawto.get_width()/2;
 443                 p[1] = e->button.y - drawto.get_height()/2;
 444
 445                 setpos = true;
 446         }
 447
 448         if(e->type == GDK_MOTION_NOTIFY && (Gdk::ModifierType(e->motion.state) & Gdk::BUTTON1_MASK))
 449         {
 450                 p[0] = e->motion.x - drawto.get_width()/2;
 451                 p[1] = e->motion.y - drawto.get_height()/2;
 452
 453                 setpos = true;
 454         }
 455
 456         if(setpos && prev && get_canvas_view())
 457         {
 458                 const Point &tl = get_canvas_view()->get_canvas()->rend_desc().get_tl();
 459                 const Point &br = get_canvas_view()->get_canvas()->rend_desc().get_br();
 460
 461                 float max = abs((br[0]-tl[0]) / drawto.get_width());
 462
 463                 if((prev->get_width() / drawto.get_width()) < (prev->get_height() / drawto.get_height()))
 464                         max = abs((br[1]-tl[1]) / drawto.get_height());
 465
 466                 float signx = (br[0]-tl[0]) < 0 ? -1 : 1;
 467                 float signy = (br[1]-tl[1]) < 0 ? -1 : 1;
 468
 469                 Point pos;
 470
 471                 pos[0] = p[0] * max * signx;
 472                 pos[1] = p[1] * max * signy;
 473
 474                 get_canvas_view()->get_work_area()->set_focus_point(-pos);
 475
 476                 return true;
 477         }
 478
 479         return false;
 480 }
 481
 482 //Navigator Dock Definitions
 483
 484 studio::Dock_Navigator::Dock_Navigator()
 485 :Dock_CanvasSpecific("navigator",_("Navigator"),Gtk::StockID("synfig-navigator"))
 486 {
 487         add(dummy);
 488 }
 489
 490 studio::Dock_Navigator::~Dock_Navigator()
 491 {
 492 }
 493
 494 void studio::Dock_Navigator::changed_canvas_view_vfunc(etl::loose_handle<CanvasView> canvas_view)
 495 {
 496         if(canvas_view)
 497         {
 498                 Widget *v = canvas_view->get_ext_widget("navview");
 499
 500                 if(!v)
 501                 {
 502                         v = new Widget_NavView(canvas_view);
 503                         canvas_view->set_ext_widget("navview",v);
 504                 }
 505
 506                 add(*v);
 507         }else
 508         {
 509                 clear_previous();
 510                 //add(dummy);
 511         }
 512 }