synfig-studio/tags/synfigstudio_0_61_07_rc3/src/gtkmm/dock_navigator.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file dock_navigator.cpp
   3 **      \brief Dock Nagivator File
   4 **
   5 **      $Id$
   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 "dock_navigator.h"
  34 #include "canvasview.h"
  35 #include "workarea.h"
  36
  37 #include <cassert>
  38 #include <synfig/canvas.h>
  39 #include <synfig/context.h>
  40 #include <synfig/target_scanline.h>
  41 #include <synfig/surface.h>
  42
  43 #include <gtkmm/separator.h>
  44
  45 #include "asyncrenderer.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
  55 /* === M A C R O S ========================================================= */
  56
  57 const double log_10_2 = log(2.0);
  58
  59 /* === G L O B A L S ======================================================= */
  60
  61 /* === P R O C E D U R E S ================================================= */
  62
  63 /* === M E T H O D S ======================================================= */
  64
  65 /* === E N T R Y P O I N T ================================================= */
  66 studio::Widget_NavView::Widget_NavView(CanvasView::LooseHandle cv)
  67 :canvview(cv),
  68 adj_zoom(0,-4,4,1,2),
  69 scrolling(false),
  70 surface(new synfig::Surface)
  71 {
  72         attach(drawto,0,4,0,1);
  73
  74         attach(*manage(new Gtk::HSeparator),0,4,1,2,Gtk::SHRINK|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
  75
  76         //zooming stuff
  77         attach(zoom_print,0,1,2,3,Gtk::SHRINK|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
  78         zoom_print.set_size_request(40,-1);
  79
  80         Gtk::HScale *s = manage(new Gtk::HScale(adj_zoom));
  81         s->set_draw_value(false);
  82         //s->set_update_policy(Gtk::UPDATE_DELAYED);
  83         //s->signal_event().connect(sigc::mem_fun(*this,&Dock_Navigator::on_scroll_event));
  84         attach(*s,1,4,2,3,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
  85
  86         show_all();
  87
  88         adj_zoom.signal_value_changed().connect(sigc::mem_fun(*this,&Widget_NavView::on_number_modify));
  89
  90         if(cv)
  91         {
  92                 drawto.signal_expose_event().connect(sigc::mem_fun(*this,&Widget_NavView::on_expose_draw));
  93                 drawto.signal_event().connect(sigc::mem_fun(*this,&Widget_NavView::on_mouse_event));
  94
  95                 drawto.add_events(Gdk::BUTTON_MOTION_MASK|Gdk::BUTTON_PRESS_MASK);
  96
  97                 //get_canvas_view()->canvas_interface()->signal_dirty_preview()
  98                 //                              .connect(sigc::mem_fun(*this,&Widget_NavView::on_dirty_preview));
  99                 get_canvas_view()->work_area->signal_rendering()
 100                                                 .connect(sigc::mem_fun(*this,&Widget_NavView::on_dirty_preview));
 101
 102                 get_canvas_view()->work_area->signal_view_window_changed()
 103                                                 .connect(sigc::mem_fun(*this,&Widget_NavView::on_workarea_view_change));
 104
 105                 //update with this canvas' view
 106                 on_workarea_view_change();
 107
 108                 dirty = true;
 109                 queue_draw();
 110         }
 111
 112         adj_zoom.set_value(0);
 113 }
 114
 115 studio::Widget_NavView::~Widget_NavView()
 116 {
 117 }
 118
 119
 120 static void freegu8(const guint8 *p)
 121 {
 122         delete [] p;
 123 }
 124
 125 void studio::Widget_NavView::on_start_render()
 126 {
 127         if(dirty)
 128         {
 129                 //synfig::warning("Nav: Starting render");
 130                 //synfig::warning("Nav: Rendering canvas");
 131                 etl::handle<Target_Scanline>    targ = surface_target(surface.get());
 132
 133                 targ->set_canvas(get_canvas_view()->get_canvas());
 134                 targ->set_remove_alpha();
 135                 targ->set_avoid_time_sync();
 136                 targ->set_quality(get_canvas_view()->get_work_area()->get_quality());
 137                 //synfig::info("Set the quality level to: %d", get_canvas_view()->get_work_area()->get_quality());
 138
 139                 //this should set it to render a single frame
 140                 RendDesc        r = get_canvas_view()->get_canvas()->rend_desc();
 141                 r.set_time(get_canvas_view()->canvas_interface()->get_time());
 142
 143                 //this changes the size of the canvas to the closest thing we can find
 144                 int sw = r.get_w(), sh = r.get_h();
 145
 146                 //synfig::warning("Nav: source image is %d x %d", sw,sh);
 147
 148                 //resize so largest dimension is 128
 149                 int dw = sw > sh ? 128 : sw*128/sh,
 150                         dh = sh > sw ? 128 : sh*128/sw;
 151
 152                 //synfig::warning("Nav: dest image is %d x %d", dw,dh);
 153
 154                 r.set_w(dw);
 155                 r.set_h(dh);
 156
 157                 //get the pw and ph
 158                 //float pw = r.get_pw();
 159                 //float ph = r.get_ph();
 160
 161                 //synfig::warning("Nav: pixel size is %f x %f", pw,ph);
 162
 163                 //this renders that single frame
 164                 targ->set_rend_desc(&r);
 165
 166                 //synfig::warning("Nav: Building async renderer and starting it...");
 167
 168                 renderer = new AsyncRenderer(targ);
 169                 renderer->signal_success().connect(sigc::mem_fun(*this,&Widget_NavView::on_finish_render));
 170                 renderer->start();
 171                 dirty = false;
 172         }
 173 }
 174
 175 void studio::Widget_NavView::on_finish_render()
 176 {
 177         //convert it into our pixmap
 178         PixelFormat pf(PF_RGB);
 179
 180         //synfig::warning("Nav: It hath succeeded!!!");
 181
 182         //assert(renderer && renderer->has_success());
 183         DEBUGPOINT();
 184         //synfig::warning("Nav: now we know it really succeeded");
 185         if(!*surface)
 186         {
 187                 synfig::warning("dock_navigator: Bad surface");
 188                 return;
 189         }
 190
 191         int w = 0, h = 0;
 192         int dw = surface->get_w();
 193         int dh = surface->get_h();
 194
 195         if(prev)
 196         {
 197                 w = prev->get_width();
 198                 h = prev->get_height();
 199         }
 200
 201         if(w != dw || h != dh || !prev)
 202         {
 203                 const int total_bytes(dw*dh*synfig::channels(pf));
 204
 205                 //synfig::warning("Nav: Updating the pixbuf to be the right size, etc. (%d bytes)", total_bytes);
 206
 207                 prev.clear();
 208                 guint8 *bytes = new guint8[total_bytes]; //24 bits per pixel
 209
 210                 //convert into our buffered dataS
 211                 //synfig::warning("Nav: converting color format into buffer");
 212                 convert_color_format((unsigned char *)bytes, (*surface)[0], dw*dh, pf, App::gamma);
 213
 214                 prev =
 215                 Gdk::Pixbuf::create_from_data(
 216                         bytes,  // pointer to the data
 217                         Gdk::COLORSPACE_RGB, // the colorspace
 218                         ((pf&PF_A)==PF_A), // has alpha?
 219                         8, // bits per sample
 220                         dw,     // width
 221                         dh,     // height
 222                         dw*synfig::channels(pf), // stride (pitch)
 223                         SigC::slot(freegu8)
 224                 );
 225         }
 226         else
 227         {
 228                 //synfig::warning("Nav: Don't need to resize");
 229                 //convert into our buffered dataS
 230                 //synfig::warning("Nav: converting color format into buffer");
 231                 if(prev) //just in case we're stupid
 232                 {
 233                         convert_color_format((unsigned char *)prev->get_pixels(), (*surface)[0], dw*dh, pf, App::gamma);
 234                 }
 235         }
 236         queue_draw();
 237 }
 238
 239 /*      zoom slider is on exponential scale
 240
 241         map: -4,4 -> small number,1600 with 100 at 0
 242
 243         f(x) = 100*2^x
 244 */
 245
 246 static double unit_to_zoom(double f)
 247 {
 248         return pow(2.0,f);
 249 }
 250
 251 static double zoom_to_unit(double f)
 252 {
 253         if(f > 0)
 254         {
 255                 return log(f) / log_10_2;
 256         }else return -999999.0;
 257 }
 258
 259 bool studio::Widget_NavView::on_expose_draw(GdkEventExpose */*exp*/)
 260 {
 261         //print out the zoom
 262         //HACK kind of...
 263         //zoom_print.set_text(strprintf("%.1f%%",100*unit_to_zoom(adj_zoom.get_value())));
 264
 265         //draw the good stuff
 266         on_start_render();
 267
 268         //if we've got a preview etc. display it...
 269         if(get_canvas_view() && prev)
 270         {
 271                 //axis transform from units to pixel coords
 272                 float xaxis = 0, yaxis = 0;
 273
 274                 int canvw = get_canvas_view()->get_canvas()->rend_desc().get_w();
 275                 //int canvh = get_canvas_view()->get_canvas()->rend_desc().get_h();
 276
 277                 float pw = get_canvas_view()->get_canvas()->rend_desc().get_pw();
 278                 float ph = get_canvas_view()->get_canvas()->rend_desc().get_ph();
 279
 280                 int w = prev->get_width();
 281                 int h = prev->get_height();
 282
 283                 //scale up/down to the nearest pixel ratio...
 284                 //and center in center
 285                 int offx=0, offy=0;
 286
 287                 float sx, sy;
 288                 int nw,nh;
 289
 290                 sx = drawto.get_width() / (float)w;
 291                 sy = drawto.get_height() / (float)h;
 292
 293                 //synfig::warning("Nav redraw: now to scale the bitmap: %.3f x %.3f",sx,sy);
 294
 295                 //round to smallest scale (fit entire thing in window without distortion)
 296                 if(sx > sy) sx = sy;
 297                 //else sy = sx;
 298
 299                 //scaling and stuff
 300                 // the point to navpixel space conversion should be:
 301                 //              (navpixels / canvpixels) * (canvpixels / canvsize)
 302                 //      or (navpixels / prevpixels) * (prevpixels / navpixels)
 303                 xaxis = sx * w / (float)canvw;
 304                 yaxis = xaxis/ph;
 305                 xaxis /= pw;
 306
 307                 //scale to a new pixmap and then copy over to the window
 308                 nw = (int)(w*sx);
 309                 nh = (int)(h*sx);
 310
 311                 //must now center to be cool
 312                 offx = (drawto.get_width() - nw)/2;
 313                 offy = (drawto.get_height() - nh)/2;
 314
 315                 //trivial escape
 316                 if(nw == 0 || nh == 0)return true;
 317
 318                 //draw to drawing area
 319                 Glib::RefPtr<Gdk::GC>   gc = Gdk::GC::create(drawto.get_window());
 320
 321                 //synfig::warning("Nav: Scaling pixmap to off (%d,%d) with size (%d,%d)", offx,offy,nw, nh);
 322                 Glib::RefPtr<Gdk::Pixbuf> scalepx = prev->scale_simple(nw,nh,Gdk::INTERP_NEAREST);
 323
 324                 //synfig::warning("Nav: Drawing scaled bitmap");
 325                 drawto.get_window()->draw_pixbuf(
 326                         gc, //GC
 327                         scalepx, //pixbuf
 328                         0, 0,   // Source X and Y
 329                         offx, offy,     // Dest X and Y
 330                         -1,-1,  // Width and Height
 331                         Gdk::RGB_DITHER_MAX, // RgbDither
 332                         2, 2 // Dither offset X and Y
 333                 );
 334
 335                 //draw fancy red rectangle around focus point
 336                 const Point &wtl = get_canvas_view()->work_area->get_window_tl(),
 337                                         &wbr = get_canvas_view()->work_area->get_window_br();
 338
 339                 gc->set_rgb_fg_color(Gdk::Color("#ff0000"));
 340                 gc->set_line_attributes(2,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
 341
 342                 //it must be clamped to the drawing area though
 343                 int l=0,rw=0,t=0,rh=0;
 344                 const Point fp = -get_canvas_view()->work_area->get_focus_point();
 345
 346                 //get focus point in normal space
 347                 rw = (int)(abs((wtl[0]-wbr[0])*xaxis));
 348                 rh = (int)(abs((wtl[1]-wbr[1])*yaxis));
 349
 350                 //transform into pixel space
 351                 l = (int)(drawto.get_width()/2 + fp[0]*xaxis - rw/2);
 352                 t = (int)(drawto.get_height()/2 + fp[1]*yaxis - rh/2);
 353
 354                 //coord system:
 355                 // tl : (offx,offy)
 356                 // axis multipliers = xaxis,yaxis
 357                 //synfig::warning("Nav: tl (%f,%f), br (%f,%f)", wtl[0],wtl[1],wbr[0],wbr[1]);
 358                 //synfig::warning("Nav: tl (%f,%f), br (%f,%f)", wtl[0],wtl[1],wbr[0],wbr[1]);
 359                 //synfig::warning("Nav: Drawing Rectangle (%d,%d) with dim (%d,%d)", l,t,rw,rh);
 360                 drawto.get_window()->draw_rectangle(gc,false,l,t,rw,rh);
 361         }
 362
 363         return false; //draw everything else too
 364 }
 365
 366 void studio::Widget_NavView::on_dirty_preview()
 367 {
 368         dirty = true;
 369         queue_draw();
 370 }
 371
 372 bool studio::Widget_NavView::on_scroll_event(GdkEvent *event)
 373 {
 374         if(get_canvas_view() && get_canvas_view()->get_work_area())
 375         {
 376                 double z = unit_to_zoom(adj_zoom.get_value());
 377
 378                 switch(event->type)
 379                 {
 380                         case GDK_BUTTON_PRESS:
 381                         {
 382                                 if(event->button.button == 1)
 383                                 {
 384                                         scrolling = true;
 385                                         get_canvas_view()->get_work_area()->set_zoom(z);
 386                                         scrolling = false;
 387                                 }
 388                                 break;
 389                         }
 390
 391                         case GDK_MOTION_NOTIFY:
 392                         {
 393                                 if(Gdk::ModifierType(event->motion.state) & Gdk::BUTTON1_MASK)
 394                                 {
 395                                         scrolling = true;
 396                                         get_canvas_view()->get_work_area()->set_zoom(z);
 397                                         scrolling = false;
 398                                 }
 399                                 break;
 400                         }
 401
 402                         default:
 403                                 break;
 404                 }
 405         }
 406
 407         return false;
 408 }
 409
 410 void studio::Widget_NavView::on_number_modify()
 411 {
 412         double z = unit_to_zoom(adj_zoom.get_value());
 413         zoom_print.set_text(strprintf("%.1f%%",z*100.0));
 414         //synfig::warning("Updating zoom to %f",adj_zoom.get_value());
 415
 416         if(get_canvas_view() && z != get_canvas_view()->get_work_area()->get_zoom())
 417         {
 418                 scrolling = true;
 419                 get_canvas_view()->get_work_area()->set_zoom(z);
 420                 scrolling = false;
 421         }
 422 }
 423
 424 void studio::Widget_NavView::on_workarea_view_change()
 425 {
 426         double wz = get_canvas_view()->get_work_area()->get_zoom();
 427         double z = zoom_to_unit(wz);
 428
 429         //synfig::warning("Updating zoom to %f -> %f",wz,z);
 430         if(!scrolling && z != adj_zoom.get_value())
 431         {
 432                 adj_zoom.set_value(z);
 433                 //adj_zoom.value_changed();
 434         }
 435         queue_draw();
 436 }
 437
 438 bool studio::Widget_NavView::on_mouse_event(GdkEvent * e)
 439 {
 440         Point p;
 441         bool    setpos = false;
 442
 443         if(e->type == GDK_BUTTON_PRESS && e->button.button == 1)
 444         {
 445                 p[0] = e->button.x - drawto.get_width()/2;
 446                 p[1] = e->button.y - drawto.get_height()/2;
 447
 448                 setpos = true;
 449         }
 450
 451         if(e->type == GDK_MOTION_NOTIFY && (Gdk::ModifierType(e->motion.state) & Gdk::BUTTON1_MASK))
 452         {
 453                 p[0] = e->motion.x - drawto.get_width()/2;
 454                 p[1] = e->motion.y - drawto.get_height()/2;
 455
 456                 setpos = true;
 457         }
 458
 459         if(setpos && prev && get_canvas_view())
 460         {
 461                 const Point &tl = get_canvas_view()->get_canvas()->rend_desc().get_tl();
 462                 const Point &br = get_canvas_view()->get_canvas()->rend_desc().get_br();
 463
 464                 float max = abs((br[0]-tl[0]) / drawto.get_width());
 465
 466                 if((float(prev->get_width()) / drawto.get_width()) < (float(prev->get_height()) / drawto.get_height()))
 467                         max = abs((br[1]-tl[1]) / drawto.get_height());
 468
 469                 float signx = (br[0]-tl[0]) < 0 ? -1 : 1;
 470                 float signy = (br[1]-tl[1]) < 0 ? -1 : 1;
 471
 472                 Point pos;
 473
 474                 pos[0] = p[0] * max * signx;
 475                 pos[1] = p[1] * max * signy;
 476
 477                 get_canvas_view()->get_work_area()->set_focus_point(-pos);
 478
 479                 return true;
 480         }
 481
 482         return false;
 483 }
 484
 485 //Navigator Dock Definitions
 486
 487 studio::Dock_Navigator::Dock_Navigator()
 488 :Dock_CanvasSpecific("navigator",_("Navigator"),Gtk::StockID("synfig-navigator"))
 489 {
 490         add(dummy);
 491 }
 492
 493 studio::Dock_Navigator::~Dock_Navigator()
 494 {
 495 }
 496
 497 void studio::Dock_Navigator::changed_canvas_view_vfunc(etl::loose_handle<CanvasView> canvas_view)
 498 {
 499         if(canvas_view)
 500         {
 501                 Widget *v = canvas_view->get_ext_widget("navview");
 502
 503                 if(!v)
 504                 {
 505                         v = new Widget_NavView(canvas_view);
 506                         canvas_view->set_ext_widget("navview",v);
 507                 }
 508
 509                 add(*v);
 510         }else
 511         {
 512                 clear_previous();
 513                 //add(dummy);
 514         }
 515 }