src/display/snap-indicator.cpp

   1 /** \file\r
   2  * Provides a class that shows a temporary indicator on the canvas of where the snap was, and what kind of snap\r
   3  *\r
   4  * Authors:\r
   5  *   Johan Engelen\r
   6  *\r
   7  * Copyright (C) Johan Engelen 2008 <j.b.c.engelen@utwente.nl>\r
   8  *\r
   9  * Released under GNU GPL, read the file 'COPYING' for more information\r
  10  */\r
  11 \r
  12 #include "display/snap-indicator.h"\r
  13 \r
  14 #include "desktop.h"\r
  15 #include "desktop-handles.h"\r
  16 #include "display/sodipodi-ctrl.h"\r
  17 #include "knot.h"\r
  18 \r
  19 namespace Inkscape {\r
  20 namespace Display {\r
  21 \r
  22 /** lifetime is measured in milliseconds\r
  23  */\r
  24 SnapIndicator::SnapIndicator(SPDesktop * desktop)\r
  25     :   tempitem(NULL),\r
  26         desktop(desktop)\r
  27 {\r
  28 }\r
  29 \r
  30 SnapIndicator::~SnapIndicator()\r
  31 {\r
  32     // remove item that might be present\r
  33     remove_snappoint();\r
  34 }\r
  35 \r
  36 void\r
  37 SnapIndicator::set_new_snappoint(Geom::Point p)\r
  38 {\r
  39     remove_snappoint();\r
  40 \r
  41     SPCanvasItem * canvasitem = sp_canvas_item_new( sp_desktop_tempgroup (desktop),\r
  42                                                     SP_TYPE_CTRL,\r
  43                                                     "anchor", GTK_ANCHOR_CENTER,\r
  44                                                     "size", 6.0,\r
  45                                                     "stroked", TRUE,\r
  46                                                     "stroke_color", 0xf000f0ff,\r
  47                                                     "mode", SP_KNOT_MODE_XOR,\r
  48                                                     "shape", SP_KNOT_SHAPE_CROSS,\r
  49                                                     NULL );\r
  50     SP_CTRL(canvasitem)->moveto ( p );\r
  51     tempitem = desktop->add_temporary_canvasitem(canvasitem, 2000);\r
  52 }\r
  53 \r
  54 void\r
  55 SnapIndicator::remove_snappoint()\r
  56 {\r
  57     if (tempitem) {\r
  58         desktop->remove_temporary_canvasitem(tempitem);\r
  59         tempitem = NULL;\r
  60     }\r
  61 }\r
  62 \r
  63 \r
  64 } //namespace Display\r
  65 } /* namespace Inkscape */\r
  66 \r
  67 /*\r
  68   Local Variables:\r
  69   mode:c++\r
  70   c-file-style:"stroustrup"\r
  71   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))\r
  72   indent-tabs-mode:nil\r
  73   fill-column:99\r
  74   End:\r
  75 */\r
  76 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :\r