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

   1 /* === S I N F G =========================================================== */
   2 /*!     \file template.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id: renderer_grid.cpp,v 1.1.1.1 2005/01/07 03:34:36 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 "renderer_grid.h"
  32 #include "workarea.h"
  33 #include <ETL/misc>
  34
  35 #endif
  36
  37 /* === U S I N G =========================================================== */
  38
  39 using namespace std;
  40 using namespace etl;
  41 using namespace sinfg;
  42 using namespace studio;
  43
  44 /* === M A C R O S ========================================================= */
  45
  46 /* === G L O B A L S ======================================================= */
  47
  48 /* === P R O C E D U R E S ================================================= */
  49
  50 /* === M E T H O D S ======================================================= */
  51
  52 Renderer_Grid::~Renderer_Grid()
  53 {
  54 }
  55
  56 bool
  57 Renderer_Grid::get_enabled_vfunc()const
  58 {
  59         return get_work_area()->grid_status();
  60 }
  61
  62 sinfg::Vector
  63 Renderer_Grid::get_grid_size()const
  64 {
  65         return get_work_area()->get_grid_size();
  66 }
  67
  68 void
  69 Renderer_Grid::render_vfunc(
  70         const Glib::RefPtr<Gdk::Drawable>& drawable,
  71         const Gdk::Rectangle& expose_area
  72 )
  73 {
  74         assert(get_work_area());
  75         if(!get_work_area())
  76                 return;
  77
  78 //      const sinfg::RendDesc &rend_desc(get_work_area()->get_canvas()->rend_desc());
  79
  80         const sinfg::Vector focus_point(get_work_area()->get_focus_point());
  81
  82 //      std::vector< std::pair<Glib::RefPtr<Gdk::Pixbuf>,int> >& tile_book(get_tile_book());
  83
  84         int drawable_w,drawable_h;
  85         drawable->get_size(drawable_w,drawable_h);
  86
  87         // Calculate the window coordinates of the top-left
  88         // corner of the canvas.
  89 //      const sinfg::Vector::value_type
  90 //              x(focus_point[0]/get_pw()+drawable_w/2-get_w()/2),
  91 //              y(focus_point[1]/get_ph()+drawable_h/2-get_h()/2);
  92
  93         /*const sinfg::Vector::value_type window_startx(window_tl[0]);
  94         const sinfg::Vector::value_type window_endx(window_br[0]);
  95         const sinfg::Vector::value_type window_starty(window_tl[1]);
  96         const sinfg::Vector::value_type window_endy(window_br[1]);
  97         */
  98 //      const int
  99 //              tile_w(get_work_area()->get_tile_w()),
 100 //              tile_h(get_work_area()->get_tile_h());
 101
 102 //      const int
 103 //              w(get_w()),
 104 //              h(get_h());
 105
 106         Glib::RefPtr<Gdk::GC> gc(Gdk::GC::create(drawable));
 107
 108         const sinfg::Vector grid_size(get_grid_size());
 109
 110         const sinfg::Vector::value_type window_startx(get_work_area()->get_window_tl()[0]);
 111         const sinfg::Vector::value_type window_endx(get_work_area()->get_window_br()[0]);
 112         const sinfg::Vector::value_type window_starty(get_work_area()->get_window_tl()[1]);
 113         const sinfg::Vector::value_type window_endy(get_work_area()->get_window_br()[1]);
 114         const float pw(get_pw()),ph(get_ph());
 115
 116         // Draw out the grid
 117         if(grid_size[0]>pw*3.5 && grid_size[1]>ph*3.5)
 118         {
 119                 sinfg::Vector::value_type x,y;
 120
 121                 x=floor(window_startx/grid_size[0])*grid_size[0];
 122                 y=floor(window_starty/grid_size[1])*grid_size[1];
 123
 124                 gc->set_function(Gdk::COPY);
 125                 gc->set_rgb_fg_color(Gdk::Color("#9f9f9f"));
 126                 gc->set_line_attributes(1,Gdk::LINE_ON_OFF_DASH,Gdk::CAP_BUTT,Gdk::JOIN_MITER);
 127
 128                 if(x<window_endx)
 129                         for(;x<window_endx;x+=grid_size[0])
 130                         {
 131                                 drawable->draw_line(gc,
 132                                         round_to_int((x-window_startx)/pw),
 133                                         0,
 134                                         round_to_int((x-window_startx)/pw),
 135                                         drawable_h
 136                                 );
 137                         }
 138                 else
 139                         for(;x>window_endx;x-=grid_size[0])
 140                         {
 141                                 drawable->draw_line(gc,
 142                                         round_to_int((x-window_startx)/pw),
 143                                         0,
 144                                         round_to_int((x-window_startx)/pw),
 145                                         drawable_h
 146                                 );
 147                         }
 148
 149                 if(y<window_endy)
 150                         for(;y<window_endy;y+=grid_size[1])
 151                         {
 152                                 drawable->draw_line(gc,
 153                                         0,
 154                                         round_to_int((y-window_starty)/ph),
 155                                         drawable_w,
 156                                         round_to_int((y-window_starty)/ph)
 157                                 );
 158                         }
 159                 else
 160                         for(;y>window_endy;y-=grid_size[1])
 161                         {
 162                                 drawable->draw_line(gc,
 163                                         0,
 164                                         round_to_int((y-window_starty)/ph),
 165                                         drawable_w,
 166                                         round_to_int((y-window_starty)/ph)
 167                                 );
 168                         }
 169         }
 170 }