00001 00002 /*************************************************************************** 00003 * hom_point_drawer.cpp - Drawer for the HomPoint class 00004 * 00005 * Created: Thu Oct 09 14:34:19 2008 00006 * Copyright 2008 Daniel Beck 00007 * 00008 ****************************************************************************/ 00009 00010 /* This program is free software; you can redistribute it and/or modify 00011 * it under the terms of the GNU General Public License as published by 00012 * the Free Software Foundation; either version 2 of the License, or 00013 * (at your option) any later version. A runtime exception applies to 00014 * this software (see LICENSE.GPL_WRE file mentioned below for details). 00015 * 00016 * This program is distributed in the hope that it will be useful, 00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 * GNU Library General Public License for more details. 00020 * 00021 * Read the full text in the LICENSE.GPL_WRE file in the doc directory. 00022 */ 00023 00024 #include <geometry/gtk/hom_point_drawer.h> 00025 #include <geometry/hom_point.h> 00026 00027 /** @class fawkes::HomPointDrawer <geometry/gtk/hom_point_drawer.h> 00028 * Drawer for HomPoint objects. 00029 * @author Daniel Beck 00030 */ 00031 00032 /** @var fawkes::HomPointDrawer::m_point_size 00033 * The radius of the point. 00034 */ 00035 00036 namespace fawkes { 00037 00038 /** Constructor. 00039 * @param p the HomPoint to draw 00040 */ 00041 HomPointDrawer::HomPointDrawer(const HomPoint& p) 00042 { 00043 m_hom_point = new HomPoint(p); 00044 m_point_size = 0.1; 00045 } 00046 00047 /** Destructor. */ 00048 HomPointDrawer::~HomPointDrawer() 00049 { 00050 delete m_hom_point; 00051 } 00052 00053 /** Set the point size with which points a drawn by this drawer. 00054 * @param s the point size 00055 */ 00056 void 00057 HomPointDrawer::set_point_size(float s) 00058 { 00059 m_point_size = s; 00060 } 00061 00062 void 00063 HomPointDrawer::draw(Cairo::RefPtr<Cairo::Context>& context) 00064 { 00065 float x = m_hom_point->x(); 00066 float y = m_hom_point->y(); 00067 00068 context->save(); 00069 context->move_to(x, y); 00070 context->arc(x, y, m_point_size, 0.0, 2.0 * M_PI); 00071 context->fill(); 00072 context->restore(); 00073 context->stroke(); 00074 } 00075 00076 } // end namespace fawkes