00001 /************************************************************************ 00002 filename: CEGUIImage.cpp 00003 created: 13/3/2004 00004 author: Paul D Turner 00005 00006 purpose: Implementation of Image class members 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 "CEGUIImage.h" 00027 #include "CEGUIExceptions.h" 00028 #include "CEGUITexture.h" 00029 #include "CEGUIImageset.h" 00030 #include "CEGUIRenderer.h" 00031 00032 #include <cmath> 00033 00034 00035 // Start of CEGUI namespace section 00036 namespace CEGUI 00037 { 00038 00039 /************************************************************************* 00040 Constructor 00041 *************************************************************************/ 00042 Image::Image(const Imageset* owner, const String& name, const Rect& area, const Point& render_offset, float horzScaling, float vertScaling) : 00043 d_owner(owner), 00044 d_area(area), 00045 d_offset(render_offset), 00046 d_name(name) 00047 { 00048 if (d_owner == NULL) 00049 { 00050 throw NullObjectException((utf8*)"Image::Image - Imageset pointer passed to Image constructor must not be null."); 00051 } 00052 00053 // setup initial image scaling 00054 setHorzScaling(horzScaling); 00055 setVertScaling(vertScaling); 00056 00057 // TODO: if we ever store texture co-ordinates, they should be calculated here. 00058 } 00059 00060 /************************************************************************* 00061 Copy constructor 00062 *************************************************************************/ 00063 Image::Image(const Image& image) : 00064 d_owner(image.d_owner), 00065 d_area(image.d_area), 00066 d_offset(image.d_offset), 00067 d_scaledWidth(image.d_scaledWidth), 00068 d_scaledHeight(image.d_scaledHeight), 00069 d_scaledOffset(image.d_scaledOffset), 00070 d_name(image.d_name) 00071 { 00072 } 00073 00074 /************************************************************************* 00075 destructor 00076 *************************************************************************/ 00077 Image::~Image(void) 00078 { 00079 } 00080 00081 00082 /************************************************************************* 00083 set the horizontal scaling factor to be applied to this Image 00084 *************************************************************************/ 00085 void Image::setHorzScaling(float factor) 00086 { 00087 d_scaledWidth = PixelAligned(d_area.getWidth() * factor); 00088 d_scaledOffset.d_x = PixelAligned(d_offset.d_x * factor); 00089 } 00090 00091 00092 /************************************************************************* 00093 set the vertical scaling factor to be applied to this Image 00094 *************************************************************************/ 00095 void Image::setVertScaling(float factor) 00096 { 00097 d_scaledHeight = PixelAligned(d_area.getHeight() * factor); 00098 d_scaledOffset.d_y = PixelAligned(d_offset.d_y * factor); 00099 } 00100 00101 00102 /************************************************************************* 00103 Clip and then queue the image to be rendered. 00104 *************************************************************************/ 00105 void Image::draw(const Rect& dest_rect, float z, const Rect& clip_rect, const ColourRect& colours, QuadSplitMode quad_split_mode) const 00106 { 00107 Rect dest(dest_rect); 00108 00109 // apply rendering offset to the destination Rect 00110 dest.offset(d_scaledOffset); 00111 00112 // draw 00113 d_owner->draw(d_area, dest, z, clip_rect, colours, quad_split_mode); 00114 } 00115 00116 00117 /************************************************************************* 00118 String object containing the name of this Image 00119 *************************************************************************/ 00120 const String& Image::getName(void) const 00121 { 00122 return d_name; 00123 } 00124 00125 00126 /************************************************************************* 00127 Return the name of the Imageset that contains this Image 00128 *************************************************************************/ 00129 const String& Image::getImagesetName(void) const 00130 { 00131 return d_owner->getName(); 00132 } 00133 00134 } // End of CEGUI namespace section