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 SnapIndicator::SnapIndicator(SPDesktop * desktop)\r
  23     :   tempitem(NULL),\r
  24         desktop(desktop)\r
  25 {\r
  26 }\r
  27 \r
  28 SnapIndicator::~SnapIndicator()\r
  29 {\r
  30     // remove item that might be present\r
  31     remove_snappoint();\r
  32 }\r
  33 \r
  34 void\r
  35 SnapIndicator::set_new_snappoint(Geom::Point p)\r
  36 {\r
  37     remove_snappoint();\r
  38 \r
  39     bool enabled = false;  // TODO add preference for snap indicator.\r
  40     if (enabled) {\r
  41         // TODO add many different kinds of snap indicator :-)\r
  42         SPCanvasItem * canvasitem = sp_canvas_item_new( sp_desktop_tempgroup (desktop),\r
  43                                                         SP_TYPE_CTRL,\r
  44                                                         "anchor", GTK_ANCHOR_CENTER,\r
  45                                                         "size", 10.0,\r
  46                                                         "stroked", TRUE,\r
  47                                                         "stroke_color", 0xf000f0ff,\r
  48                                                         "mode", SP_KNOT_MODE_XOR,\r
  49                                                         "shape", SP_KNOT_SHAPE_CROSS,\r
  50                                                         NULL );\r
  51         SP_CTRL(canvasitem)->moveto ( p );\r
  52         tempitem = desktop->add_temporary_canvasitem(canvasitem, 1000); // TODO add preference for snap indicator timeout\r
  53     }\r
  54 }\r
  55 \r
  56 void\r
  57 SnapIndicator::remove_snappoint()\r
  58 {\r
  59     if (tempitem) {\r
  60         desktop->remove_temporary_canvasitem(tempitem);\r
  61         tempitem = NULL;\r
  62     }\r
  63 }\r
  64 \r
  65 \r
  66 } //namespace Display\r
  67 } /* namespace Inkscape */\r
  68 \r
  69 /*\r
  70   Local Variables:\r
  71   mode:c++\r
  72   c-file-style:"stroustrup"\r
  73   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))\r
  74   indent-tabs-mode:nil\r
  75   fill-column:99\r
  76   End:\r
  77 */\r
  78 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :\r