00001 /* 00002 ----------------------------------------------------------------------------- 00003 This source file is part of OGRE 00004 (Object-oriented Graphics Rendering Engine) 00005 For the latest info, see http://www.ogre3d.org/ 00006 00007 Copyright © 2000-2002 The OGRE Team 00008 Also see acknowledgements in Readme.html 00009 00010 This program is free software; you can redistribute it and/or modify it under 00011 the terms of the GNU Lesser General Public License as published by the Free Software 00012 Foundation; either version 2 of the License, or (at your option) any later 00013 version. 00014 00015 This program is distributed in the hope that it will be useful, but WITHOUT 00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. 00018 00019 You should have received a copy of the GNU Lesser General Public License along with 00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple 00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to 00022 http://www.gnu.org/copyleft/lesser.txt. 00023 ----------------------------------------------------------------------------- 00024 */ 00025 #include "OgreDDVideoModeList.h" 00026 #include "OgreDDVideoMode.h" 00027 #include "OgreException.h" 00028 00029 namespace Ogre { 00030 00031 // Non-member callback functions 00032 static HRESULT CALLBACK DDEnumModesCallback( 00033 LPDDSURFACEDESC2 lpDDSD2, 00034 LPVOID lpContext) 00035 { 00036 DDVideoModeList* modeList; 00037 00038 // Omit any palettised modes 00039 if (lpDDSD2->ddpfPixelFormat.dwRGBBitCount >= 16) 00040 { 00041 00042 modeList = (DDVideoModeList*) lpContext; 00043 00044 modeList->AddMode(lpDDSD2); 00045 } 00046 00047 // Continue enumeration 00048 return DDENUMRET_OK; 00049 } 00050 00051 00052 DDVideoModeList::DDVideoModeList(LPDIRECTDRAW7 directDraw) 00053 { 00054 // Will create a new driver list and enumerate it 00055 if (directDraw == NULL) 00056 throw Exception(0, "NULL supplied as " 00057 "DD interface pointer.", "DDVideoModeList Contructor"); 00058 00059 lpDD7 = directDraw; 00060 // Enumerate the list 00061 enumerate(); 00062 00063 } 00064 00065 DDVideoModeList::~DDVideoModeList() 00066 { 00067 // Release each video mode object 00068 std::vector<DDVideoMode>::iterator p = mModeList.begin(); 00069 00070 mModeList.erase(p, p+mModeList.size()-1); 00071 } 00072 00073 00074 00075 00076 BOOL DDVideoModeList::enumerate() 00077 { 00078 HRESULT hr; 00079 00080 // Enumerate display modes 00081 // Different refresh rates are NOT enumerated (dwFlags = 0) 00082 hr = lpDD7->EnumDisplayModes(0, NULL, this, DDEnumModesCallback); 00083 if (FAILED(hr)) 00084 throw Exception(0, "Error enumerating display modes", "DDVideoModeList - enumerate"); 00085 00086 00087 return TRUE; 00088 } 00089 00090 void DDVideoModeList::AddMode(LPDDSURFACEDESC2 lpDDSD2) 00091 { 00092 //DDVideoMode *newMode; 00093 00094 00095 // Create new mode 00096 //newMode = new DDVideoMode(lpDDSD2); 00097 00098 // Add it to my list 00099 mModeList.push_back(DDVideoMode(lpDDSD2)); 00100 00101 00102 } 00103 00104 unsigned int DDVideoModeList::count(void) 00105 { 00106 return static_cast< unsigned int >( mModeList.size() ); 00107 } 00108 00109 DDVideoMode* DDVideoModeList::item(int index) 00110 { 00111 // Get an iterator for the vector 00112 std::vector<DDVideoMode>::iterator p = mModeList.begin(); 00113 00114 // Return the indexed driver 00115 return &p[index]; 00116 00117 00118 } 00119 00120 DDVideoMode* DDVideoModeList::getClosestMatch(int width, int height, int colourDepth) 00121 { 00122 // Search through looking for closest match 00123 int bestDiff, currentDiff, bestIndex; 00124 DDVideoMode *vm; 00125 00126 std::vector<DDVideoMode>::iterator p = mModeList.begin(); 00127 00128 00129 bestDiff = 9999; 00130 bestIndex = -1; 00131 for( unsigned j = 0; j < count(); j++ ) 00132 { 00133 currentDiff = 0; 00134 vm = &p[j]; 00135 currentDiff += abs(vm->mWidth - width); 00136 currentDiff += abs(vm->mHeight - height); 00137 currentDiff += abs(vm->mColourDepth - colourDepth); 00138 00139 if (currentDiff < bestDiff) 00140 { 00141 bestDiff = currentDiff; 00142 bestIndex = j; 00143 } 00144 00145 /* We Love Intel's Compilers :) */ 00146 if (currentDiff == 0) 00147 break; // No point continuing, direct match 00148 } 00149 00150 return &p[bestIndex]; 00151 } 00152 00153 } 00154 00155
Copyright © 2002-2003 by The OGRE Team
Last modified Fri May 14 23:22:07 2004