00001 /************************************************************************ 00002 filename: CEGUIListboxItem.cpp 00003 created: 12/6/2004 00004 author: Paul D Turner 00005 00006 purpose: Implementation of base class for list items 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 "elements/CEGUIListboxItem.h" 00027 #include "CEGUISystem.h" 00028 #include "CEGUIImagesetManager.h" 00029 #include "CEGUIImageset.h" 00030 00031 00032 // Start of CEGUI namespace section 00033 namespace CEGUI 00034 { 00035 /************************************************************************* 00036 Constants 00037 *************************************************************************/ 00038 const colour ListboxItem::DefaultSelectionColour = 0xFF4444AA; 00039 00040 /************************************************************************* 00041 Base class constructor 00042 *************************************************************************/ 00043 ListboxItem::ListboxItem(const String& text, uint item_id, void* item_data, bool disabled, bool auto_delete) : 00044 d_itemText(text), 00045 d_itemID(item_id), 00046 d_itemData(item_data), 00047 d_selected(false), 00048 d_disabled(disabled), 00049 d_autoDelete(auto_delete), 00050 d_owner(NULL), 00051 d_selectCols(DefaultSelectionColour, DefaultSelectionColour, DefaultSelectionColour, DefaultSelectionColour), 00052 d_selectBrush(NULL) 00053 { 00054 } 00055 00056 00057 /************************************************************************* 00058 Set the selection highlighting brush image. 00059 *************************************************************************/ 00060 void ListboxItem::setSelectionBrushImage(const String& imageset, const String& image) 00061 { 00062 setSelectionBrushImage(&ImagesetManager::getSingleton().getImageset(imageset)->getImage(image)); 00063 } 00064 00065 00066 /************************************************************************* 00067 Return a ColourRect object describing the colours in 'cols' after 00068 having their alpha component modulated by the value 'alpha'. 00069 *************************************************************************/ 00070 ColourRect ListboxItem::getModulateAlphaColourRect(const ColourRect& cols, float alpha) const 00071 { 00072 return ColourRect 00073 ( 00074 calculateModulatedAlphaColour(cols.d_top_left, alpha), 00075 calculateModulatedAlphaColour(cols.d_top_right, alpha), 00076 calculateModulatedAlphaColour(cols.d_bottom_left, alpha), 00077 calculateModulatedAlphaColour(cols.d_bottom_right, alpha) 00078 ); 00079 } 00080 00081 00082 /************************************************************************* 00083 Return a colour value describing the colour specified by 'col' after 00084 having its alpha component modulated by the value 'alpha'. 00085 *************************************************************************/ 00086 colour ListboxItem::calculateModulatedAlphaColour(colour col, float alpha) const 00087 { 00088 colour temp(col); 00089 temp.setAlpha(temp.getAlpha() * alpha); 00090 return temp; 00091 } 00092 00093 00094 /************************************************************************* 00095 Set the colours used for selection highlighting. 00096 *************************************************************************/ 00097 void ListboxItem::setSelectionColours(colour top_left_colour, colour top_right_colour, colour bottom_left_colour, colour bottom_right_colour) 00098 { 00099 d_selectCols.d_top_left = top_left_colour; 00100 d_selectCols.d_top_right = top_right_colour; 00101 d_selectCols.d_bottom_left = bottom_left_colour; 00102 d_selectCols.d_bottom_right = bottom_right_colour; 00103 } 00104 00105 } // End of CEGUI namespace section