Jason Felds
97 lines
3.8 KiB
C++
97 lines
3.8 KiB
C++
#include "global.h"
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#include "ScreenDimensions.h"
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#include "PrefsManager.h"
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#include "Preference.h"
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#include "LuaManager.h"
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#include "ThemeMetric.h"
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static ThemeMetric<float> THEME_SCREEN_WIDTH("Common","ScreenWidth");
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static ThemeMetric<float> THEME_SCREEN_HEIGHT("Common","ScreenHeight");
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/* The theme's logical resolution specifies the minimum screen width and
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* the minimum screen height with a 4:3 aspect ratio. Scale just one
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* of the dimensions up to meet the requested aspect ratio. */
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/* The theme resolution isn't necessarily 4:3; a natively widescreen
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* theme would have eg. 16:9 or 16:10.
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*
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* Note that "aspect ratio" here always means DAR (display aspect ratio: the
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* aspect ratio of the physical display); we don't care about the PAR (pixel
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* aspect ratio: the aspect ratio of a pixel). */
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float ScreenDimensions::GetThemeAspectRatio()
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{
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return THEME_NATIVE_ASPECT;
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}
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/* ceilf was originally lrintf. However, lrintf causes odd resolutions like
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* 639x480 (4:3) and 853x480 (16:9). ceilf gives the correct values of 640x480
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* and 854x480 (should really be 852 so that SCREEN_CENTER_X == 426 and not 427)
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* respectively. -aj */
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float ScreenDimensions::GetScreenWidth()
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{
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float fAspect = PREFSMAN->m_fDisplayAspectRatio;
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float fScale = 1;
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if( fAspect > THEME_NATIVE_ASPECT )
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fScale = fAspect / THEME_NATIVE_ASPECT;
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ASSERT( fScale >= 1 );
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return (float) ceilf(THEME_SCREEN_WIDTH * fScale);
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}
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float ScreenDimensions::GetScreenHeight()
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{
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float fAspect = PREFSMAN->m_fDisplayAspectRatio;
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float fScale = 1;
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if( fAspect < THEME_NATIVE_ASPECT )
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fScale = THEME_NATIVE_ASPECT / fAspect;
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ASSERT( fScale >= 1 );
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return (float) ceilf(THEME_SCREEN_HEIGHT * fScale);
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}
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void ScreenDimensions::ReloadScreenDimensions()
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{
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// Important: explicitly refresh cached metrics that we use.
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THEME_SCREEN_WIDTH.Read();
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THEME_SCREEN_HEIGHT.Read();
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LUA->SetGlobal( "SCREEN_WIDTH", (int) SCREEN_WIDTH );
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LUA->SetGlobal( "SCREEN_HEIGHT", (int) SCREEN_HEIGHT );
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LUA->SetGlobal( "SCREEN_LEFT", (int) SCREEN_LEFT );
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LUA->SetGlobal( "SCREEN_RIGHT", (int) SCREEN_RIGHT );
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LUA->SetGlobal( "SCREEN_TOP", (int) SCREEN_TOP );
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LUA->SetGlobal( "SCREEN_BOTTOM", (int) SCREEN_BOTTOM );
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LUA->SetGlobal( "SCREEN_CENTER_X", (int) SCREEN_CENTER_X );
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LUA->SetGlobal( "SCREEN_CENTER_Y", (int) SCREEN_CENTER_Y );
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LUA->SetGlobal( "ASPECT_SCALE_FACTOR", (int) ASPECT_SCALE_FACTOR );
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}
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LuaFunction( GetScreenAspectRatio, PREFSMAN->m_fDisplayAspectRatio );
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LuaFunction( GetThemeAspectRatio, ScreenDimensions::GetThemeAspectRatio() );
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/*
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* (c) 2001-2002 Chris Danford
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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