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CEGUIRenderableElement.cpp

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00001 /************************************************************************
00002         filename:       CEGUIRenderableElement.cpp
00003         created:        14/4/2004
00004         author:         Paul D Turner
00005         
00006         purpose:        Implements RenderableElement base class
00007 *************************************************************************/
00008 /*************************************************************************
00009     Crazy Eddie's GUI System (http://www.cegui.org.uk)
00010     Copyright (C)2004 - 2005 Paul D Turner (paul@cegui.org.uk)
00011 
00012     This library is free software; you can redistribute it and/or
00013     modify it under the terms of the GNU Lesser General Public
00014     License as published by the Free Software Foundation; either
00015     version 2.1 of the License, or (at your option) any later version.
00016 
00017     This library is distributed in the hope that it will be useful,
00018     but WITHOUT ANY WARRANTY; without even the implied warranty of
00019     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00020     Lesser General Public License for more details.
00021 
00022     You should have received a copy of the GNU Lesser General Public
00023     License along with this library; if not, write to the Free Software
00024     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00025 *************************************************************************/
00026 #include "CEGUIRenderableElement.h"
00027 
00028 // Start of CEGUI namespace section
00029 namespace CEGUI
00030 {
00031 
00032 /*************************************************************************
00033         Constructor
00034 *************************************************************************/
00035 RenderableElement::RenderableElement(void) :
00036         d_next(NULL),
00037         d_colours(colour(1, 1, 1, 1)),
00038         d_area(0, 0, 0, 0),
00039         d_useColoursPerImage(false)
00040 {
00041 }
00042 
00043 
00044 /*************************************************************************
00045         Destructor
00046 *************************************************************************/
00047 RenderableElement::~RenderableElement(void)
00048 {
00049 }
00050 
00051 
00052 /*************************************************************************
00053         Sets the colours to be applied when rendering the element.
00054 *************************************************************************/
00055 void RenderableElement::setColours(const colour& top_left_colour, const colour& top_right_colour, const colour& bottom_left_colour, const colour& bottom_right_colour)
00056 {
00057         d_colours.d_top_left            = top_left_colour;
00058         d_colours.d_top_right           = top_right_colour;
00059         d_colours.d_bottom_left         = bottom_left_colour;
00060         d_colours.d_bottom_right        = bottom_right_colour;
00061 }
00062 
00063 
00064 /*************************************************************************
00065         Draw the element chain starting with this element.
00066 *************************************************************************/
00067 void RenderableElement::draw(const Vector3& position, const Rect& clip_rect)
00068 {
00069         Vector3 final_pos(position);
00070         final_pos.d_x += d_area.d_left;
00071         final_pos.d_y += d_area.d_top;
00072 
00073         // call implementation function to perform actual rendering
00074         draw_impl(final_pos, clip_rect);
00075 
00076         // render next element in the chain if any.
00077         if (d_next != NULL)
00078         {
00079                 d_next->draw(position, clip_rect);
00080         }
00081 
00082 }
00083 
00084 void RenderableElement::draw(RenderCache& renderCache) const
00085 {
00086     draw_impl(renderCache);
00087 
00088     // also draw next element in the chain
00089     if (d_next)
00090     {
00091         d_next->draw(renderCache);
00092     }
00093 }
00094 
00095 } // End of  CEGUI namespace section

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