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 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **
  10 **      This package is free software; you can redistribute it and/or
  11 **      modify it under the terms of the GNU General Public License as
  12 **      published by the Free Software Foundation; either version 2 of
  13 **      the License, or (at your option) any later version.
  14 **
  15 **      This package is distributed in the hope that it will be useful,
  16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 **      General Public License for more details.
  19 **      \endlegal
  20 */
  21 /* ========================================================================= */
  22
  23 /* === H E A D E R S ======================================================= */
  24
  25 #ifdef USING_PCH
  26 #       include "pch.h"
  27 #else
  28 #ifdef HAVE_CONFIG_H
  29 #       include <config.h>
  30 #endif
  31
  32 #include "dock_navigator.h"
  33 #include "canvasview.h"
  34 #include "workarea.h"
  35
  36 #include <cassert>
  37 #include <synfig/canvas.h>
  38 #include <synfig/context.h>
  39 #include <synfig/target_scanline.h>
  40 #include <synfig/surface.h>
  41
  42 #include <gtkmm/separator.h>
  43
  44 #include "asyncrenderer.h"
  45
  46 #endif
  47
  48 /* === U S I N G =========================================================== */
  49
  50 using namespace std;
  51 using namespace etl;
  52 using namespace synfig;
  53
  54 /* === M A C R O S ========================================================= */
  55
  56 const double log_10_2 = log(2.0);
  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 studio::Widget_NavView::Widget_NavView(CanvasView::LooseHandle cv)
  66 :canvview(cv),
  67 adj_zoom(0,-4,4,1,2),
  68 scrolling(false),
  69 surface(new synfig::Surface)
  70 {
  71         attach(drawto,0,4,0,1);
  72
  73         attach(*manage(new Gtk::HSeparator),0,4,1,2,Gtk::SHRINK|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
  74
  75         //zooming stuff
  76         attach(zoom_print,0,1,2,3,Gtk::SHRINK|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
  77         zoom_print.set_size_request(40,-1);
  78
  79         Gtk::HScale *s = manage(new Gtk::HScale(adj_zoom));
  80         s->set_draw_value(false);
  81         //s->set_update_policy(Gtk::UPDATE_DELAYED);
  82         //s->signal_event().connect(sigc::mem_fun(*this,&Dock_Navigator::on_scroll_event));
  83         attach(*s,1,4,2,3,Gtk::EXPAND|Gtk::FILL,Gtk::SHRINK|Gtk::FILL);
  84
  85         show_all();
  86
  87         adj_zoom.signal_value_changed().connect(sigc::mem_fun(*this,&Widget_NavView::on_number_modify));
  88
  89         if(cv)
  90         {
  91                 drawto.signal_expose_event().connect(sigc::mem_fun(*this,&Widget_NavView::on_expose_draw));
  92                 drawto.signal_event().connect(sigc::mem_fun(*this,&Widget_NavView::on_mouse_event));
  93
  94                 drawto.add_events(Gdk::BUTTON_MOTION_MASK|Gdk::BUTTON_PRESS_MASK);
  95
  96                 //get_canvas_view()->canvas_interface()->signal_dirty_preview()
  97                 //                              .connect(sigc::mem_fun(*this,&Widget_NavView::on_dirty_preview));
  98                 get_canvas_view()->work_area->signal_rendering()
  99                                                 .connect(sigc::mem_fun(*this,&Widget_NavView::on_dirty_preview));
 100
 101                 get_canvas_view()->work_area->signal_view_window_changed()
 102                                                 .connect(sigc::mem_fun(*this,&Widget_NavView::on_workarea_view_change));
 103
 104                 //update with this canvas' view
 105                 on_workarea_view_change();
 106
 107                 dirty = true;
 108                 queue_draw();
 109         }
 110
 111         adj_zoom.set_value(0);
 112 }
 113
 114 studio::Widget_NavView::~Widget_NavView()
 115 {
 116 }
 117
 118
 119 static void freegu8(const guint8 *p)
 120 {
 121         delete [] p;
 122 }
 123
 124 void studio::Widget_NavView::on_start_render()
 125 {
 126         if(dirty)
 127         {
 128                 //synfig::warning("Nav: Starting render");
 129                 //synfig::warning("Nav: Rendering canvas");
 130                 etl::handle<Target_Scanline>    targ = surface_target(surface.get());
 131
 132                 targ->set_canvas(get_canvas_view()->get_canvas());
 133                 targ->set_remove_alpha();
 134                 targ->set_avoid_time_sync();
 135                 targ->set_quality(get_canvas_view()->get_work_area()->get_quality());
 136                 //synfig::info("Set the quality level to: %d", get_canvas_view()->get_work_area()->get_quality());
 137
 138                 //this should set it to render a single frame
 139                 RendDesc        r = get_canvas_view()->get_canvas()->rend_desc();
 140                 r.set_time(get_canvas_view()->canvas_interface()->get_time());
 141
 142                 //this changes the size of the canvas to the closest thing we can find
 143                 int sw = r.get_w(), sh = r.get_h();
 144
 145                 //synfig::warning("Nav: source image is %d x %d", sw,sh);
 146
 147                 //resize so largest dimension is 128
 148                 int dw = sw > sh ? 128 : sw*128/sh,
 149                         dh = sh > sw ? 128 : sh*128/sw;
 150
 151                 //synfig::warning("Nav: dest image is %d x %d", dw,dh);
 152
 153                 r.set_w(dw);
 154                 r.set_h(dh);
 155
 156                 //get the pw and ph
 157                 //float pw = r.get_pw();
 158                 //float ph = r.get_ph();
 159
 160                 //synfig::warning("Nav: pixel size is %f x %f", pw,ph);
 161
 162                 //this renders that single frame
 163                 targ->set_rend_desc(&r);
 164
 165                 //synfig::warning("Nav: Building async renderer and starting it...");
 166
 167                 renderer = new AsyncRenderer(targ);
 168                 renderer->signal_success().connect(sigc::mem_fun(*this,&Widget_NavView::on_finish_render));
 169                 renderer->start();
 170                 dirty = false;
 171         }
 172 }
 173
 174 void studio::Widget_NavView::on_finish_render()
 175 {
 176         //convert it into our pixmap
 177         PixelFormat pf(PF_RGB);
 178
 179         //synfig::warning("Nav: It hath succeeded!!!");
 180
 181         //assert(renderer && renderer->has_success());
 182         DEBUGPOINT();
 183         //synfig::warning("Nav: now we know it really succeeded");
 184         if(!*surface)
 185         {
 186                 synfig::warning("dock_navigator: Bad surface");
 187                 return;
 188         }
 189
 190         int w = 0, h = 0;
 191         int dw = surface->get_w();
 192         int dh = surface->get_h();
 193
 194         if(prev)
 195         {
 196                 w = prev->get_width();
 197                 h = prev->get_height();
 198         }
 199
 200         if(w != dw || h != dh || !prev)
 201         {
 202                 const int total_bytes(dw*dh*synfig::channels(pf));
 203
 204                 //synfig::warning("Nav: Updating the pixbuf to be the right size, etc. (%d bytes)", total_bytes);
 205
 206                 prev.clear();
 207                 guint8 *bytes = new guint8[total_bytes]; //24 bits per pixel
 208
 209                 //convert into our buffered dataS
 210                 //synfig::warning("Nav: converting color format into buffer");
 211                 convert_color_format((unsigned char *)bytes, (*surface)[0], dw*dh, pf, App::gamma);
 212
 213                 prev =
 214                 Gdk::Pixbuf::create_from_data(
 215                         bytes,  // pointer to the data
 216                         Gdk::COLORSPACE_RGB, // the colorspace
 217                         ((pf&PF_A)==PF_A), // has alpha?
 218                         8, // bits per sample
 219                         dw,     // width
 220                         dh,     // height
 221                         dw*synfig::channels(pf), // stride (pitch)
 222                         SigC::slot(freegu8)
 223                 );
 224         }
 225         else
 226         {
 227                 //synfig::warning("Nav: Don't need to resize");
 228                 //convert into our buffered dataS
 229                 //synfig::warning("Nav: converting color format into buffer");
 230                 if(prev) //just in case we're stupid
 231                 {
 232                         convert_color_format((unsigned char *)prev->get_pixels(), (*surface)[0], dw*dh, pf, App::gamma);
 233                 }
 234         }
 235         queue_draw();
 236 }
 237
 238 /*      zoom slider is on exponential scale
 239
 240         map: -4,4 -> small number,1600 with 100 at 0
 241
 242         f(x) = 100*2^x
 243 */
 244
 245 static double unit_to_zoom(double f)
 246 {
 247         return pow(2.0,f);
 248 }
 249
 250 static double zoom_to_unit(double f)
 251 {
 252         if(f > 0)
 253         {
 254                 return log(f) / log_10_2;
 255         }else return -999999.0;
 256 }
 257
 258 bool studio::Widget_NavView::on_expose_draw(GdkEventExpose *exp)
 259 {
 260         //print out the zoom
 261         //HACK kind of...
 262         //zoom_print.set_text(strprintf("%.1f%%",100*unit_to_zoom(adj_zoom.get_value())));
 263
 264         //draw the good stuff
 265         on_start_render();
 266
 267         //if we've got a preview etc. display it...
 268         if(get_canvas_view() && prev)
 269         {
 270                 //axis transform from units to pixel coords
 271                 float xaxis = 0, yaxis = 0;
 272
 273                 int canvw = get_canvas_view()->get_canvas()->rend_desc().get_w();
 274                 //int canvh = get_canvas_view()->get_canvas()->rend_desc().get_h();
 275
 276                 float pw = get_canvas_view()->get_canvas()->rend_desc().get_pw();
 277                 float ph = get_canvas_view()->get_canvas()->rend_desc().get_ph();
 278
 279                 int w = prev->get_width();
 280                 int h = prev->get_height();
 281
 282                 //scale up/down to the nearest pixel ratio...
 283                 //and center in center
 284                 int offx=0, offy=0;
 285
 286                 float sx, sy;
 287                 int nw,nh;
 288
 289                 sx = drawto.get_width() / (float)w;
 290                 sy = drawto.get_height() / (float)h;
 291
 292                 //synfig::warning("Nav redraw: now to scale the bitmap: %.3f x %.3f",sx,sy);
 293
 294                 //round to smallest scale (fit entire thing in window without distortion)
 295                 if(sx > sy) sx = sy;
 296                 //else sy = sx;
 297
 298                 //scaling and stuff
 299                 // the point to navpixel space conversion should be:
 300                 //              (navpixels / canvpixels) * (canvpixels / canvsize)
 301                 //      or (navpixels / prevpixels) * (prevpixels / navpixels)
 302                 xaxis = sx * w / (float)canvw;
 303                 yaxis = xaxis/ph;
 304                 xaxis /= pw;
 305
 306                 //scale to a new pixmap and then copy over to the window
 307                 nw = (int)(w*sx);
 308                 nh = (int)(h*sx);
 309
 310                 //must now center to be cool
 311                 offx = (drawto.get_width() - nw)/2;
 312                 offy = (drawto.get_height() - nh)/2;
 313
 314                 //trivial escape
 315                 if(nw == 0 || nh == 0)return true;
 316
 317                 //draw to drawing area
 318                 Glib::RefPtr<Gdk::GC>   gc = Gdk::GC::create(drawto.get_window());
 319
 320                 //synfig::warning("Nav: Scaling pixmap to off (%d,%d) with size (%d,%d)", offx,offy,nw, nh);
 321                 Glib::RefPtr<Gdk::Pixbuf> scalepx = prev->scale_simple(nw,nh,Gdk::INTERP_NEAREST);
 322
 323                 //synfig::warning("Nav: Drawing scaled bitmap");
 324                 drawto.get_window()->draw_pixbuf(
 325                         gc, //GC
 326                         scalepx, //pixbuf
 327                         0, 0,   // Source X and Y
 328                         offx, offy,     // Dest X and Y
 329                         -1,-1,  // Width and Height
 330                         Gdk::RGB_DITHER_MAX, // RgbDither
 331                         2, 2 // Dither offset X and Y
 332                 );
 333
 334                 //draw fancy red rectangle around focus point
 335                 const Point &wtl = get_canvas_view()->work_area->get_window_tl(),
 336                                         &wbr = get_canvas_view()->work_area->get_window_br();
 337
 338                 gc->set_rgb_fg_color(Gdk::Color("#ff0000"));
 339                 gc->set_line_attributes(2,Gdk::LINE_SOLID,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
 340
 341                 //it must be clamped to the drawing area though
 342                 int l=0,rw=0,t=0,rh=0;
 343                 const Point fp = -get_canvas_view()->work_area->get_focus_point();
 344
 345                 //get focus point in normal space
 346                 rw = (int)(abs((wtl[0]-wbr[0])*xaxis));
 347                 rh = (int)(abs((wtl[1]-wbr[1])*yaxis));
 348
 349                 //transform into pixel space
 350                 l = (int)(drawto.get_width()/2 + fp[0]*xaxis - rw/2);
 351                 t = (int)(drawto.get_height()/2 + fp[1]*yaxis - rh/2);
 352
 353                 //coord system:
 354                 // tl : (offx,offy)
 355                 // axis multipliers = xaxis,yaxis
 356                 //synfig::warning("Nav: tl (%f,%f), br (%f,%f)", wtl[0],wtl[1],wbr[0],wbr[1]);
 357                 //synfig::warning("Nav: tl (%f,%f), br (%f,%f)", wtl[0],wtl[1],wbr[0],wbr[1]);
 358                 //synfig::warning("Nav: Drawing Rectangle (%d,%d) with dim (%d,%d)", l,t,rw,rh);
 359                 drawto.get_window()->draw_rectangle(gc,false,l,t,rw,rh);
 360         }
 361
 362         return false; //draw everything else too
 363 }
 364
 365 void studio::Widget_NavView::on_dirty_preview()
 366 {
 367         dirty = true;
 368         queue_draw();
 369 }
 370
 371 bool studio::Widget_NavView::on_scroll_event(GdkEvent *event)
 372 {
 373         if(get_canvas_view() && get_canvas_view()->get_work_area())
 374         {
 375                 double z = unit_to_zoom(adj_zoom.get_value());
 376
 377                 switch(event->type)
 378                 {
 379                         case GDK_BUTTON_PRESS:
 380                         {
 381                                 if(event->button.button == 1)
 382                                 {
 383                                         scrolling = true;
 384                                         get_canvas_view()->get_work_area()->set_zoom(z);
 385                                         scrolling = false;
 386                                 }
 387                                 break;
 388                         }
 389
 390                         case GDK_MOTION_NOTIFY:
 391                         {
 392                                 if(Gdk::ModifierType(event->motion.state) & Gdk::BUTTON1_MASK)
 393                                 {
 394                                         scrolling = true;
 395                                         get_canvas_view()->get_work_area()->set_zoom(z);
 396                                         scrolling = false;
 397                                 }
 398                                 break;
 399                         }
 400
 401                         default:
 402                                 break;
 403                 }
 404         }
 405
 406         return false;
 407 }
 408
 409 void studio::Widget_NavView::on_number_modify()
 410 {
 411         double z = unit_to_zoom(adj_zoom.get_value());
 412         zoom_print.set_text(strprintf("%.1f%%",z*100.0));
 413         //synfig::warning("Updating zoom to %f",adj_zoom.get_value());
 414
 415         if(get_canvas_view() && z != get_canvas_view()->get_work_area()->get_zoom())
 416         {
 417                 scrolling = true;
 418                 get_canvas_view()->get_work_area()->set_zoom(z);
 419                 scrolling = false;
 420         }
 421 }
 422
 423 void studio::Widget_NavView::on_workarea_view_change()
 424 {
 425         double wz = get_canvas_view()->get_work_area()->get_zoom();
 426         double z = zoom_to_unit(wz);
 427
 428         //synfig::warning("Updating zoom to %f -> %f",wz,z);
 429         if(!scrolling && z != adj_zoom.get_value())
 430         {
 431                 adj_zoom.set_value(z);
 432                 //adj_zoom.value_changed();
 433         }
 434         queue_draw();
 435 }
 436
 437 bool studio::Widget_NavView::on_mouse_event(GdkEvent * e)
 438 {
 439         Point p;
 440         bool    setpos = false;
 441
 442         if(e->type == GDK_BUTTON_PRESS && e->button.button == 1)
 443         {
 444                 p[0] = e->button.x - drawto.get_width()/2;
 445                 p[1] = e->button.y - drawto.get_height()/2;
 446
 447                 setpos = true;
 448         }
 449
 450         if(e->type == GDK_MOTION_NOTIFY && (Gdk::ModifierType(e->motion.state) & Gdk::BUTTON1_MASK))
 451         {
 452                 p[0] = e->motion.x - drawto.get_width()/2;
 453                 p[1] = e->motion.y - drawto.get_height()/2;
 454
 455                 setpos = true;
 456         }
 457
 458         if(setpos && prev && get_canvas_view())
 459         {
 460                 const Point &tl = get_canvas_view()->get_canvas()->rend_desc().get_tl();
 461                 const Point &br = get_canvas_view()->get_canvas()->rend_desc().get_br();
 462
 463                 float max = abs((br[0]-tl[0]) / drawto.get_width());
 464
 465                 if((prev->get_width() / drawto.get_width()) < (prev->get_height() / drawto.get_height()))
 466                         max = abs((br[1]-tl[1]) / drawto.get_height());
 467
 468                 float signx = (br[0]-tl[0]) < 0 ? -1 : 1;
 469                 float signy = (br[1]-tl[1]) < 0 ? -1 : 1;
 470
 471                 Point pos;
 472
 473                 pos[0] = p[0] * max * signx;
 474                 pos[1] = p[1] * max * signy;
 475
 476                 get_canvas_view()->get_work_area()->set_focus_point(-pos);
 477
 478                 return true;
 479         }
 480
 481         return false;
 482 }
 483
 484 //Navigator Dock Definitions
 485
 486 studio::Dock_Navigator::Dock_Navigator()
 487 :Dock_CanvasSpecific("navigator",_("Navigator"),Gtk::StockID("synfig-navigator"))
 488 {
 489         add(dummy);
 490 }
 491
 492 studio::Dock_Navigator::~Dock_Navigator()
 493 {
 494 }
 495
 496 void studio::Dock_Navigator::changed_canvas_view_vfunc(etl::loose_handle<CanvasView> canvas_view)
 497 {
 498         if(canvas_view)
 499         {
 500                 Widget *v = canvas_view->get_ext_widget("navview");
 501
 502                 if(!v)
 503                 {
 504                         v = new Widget_NavView(canvas_view);
 505                         canvas_view->set_ext_widget("navview",v);
 506                 }
 507
 508                 add(*v);
 509         }else
 510         {
 511                 clear_previous();
 512                 //add(dummy);
 513         }
 514 }