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