mirror of https://github.com/minetest/irrlicht.git
133 lines
3.0 KiB
C++
133 lines
3.0 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "CVideoModeList.h"
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#include "irrMath.h"
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namespace irr
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{
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namespace video
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{
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//! constructor
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CVideoModeList::CVideoModeList()
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{
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#ifdef _DEBUG
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setDebugName("CVideoModeList");
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#endif
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Desktop.depth = 0;
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Desktop.size = core::dimension2d<u32>(0,0);
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}
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void CVideoModeList::setDesktop(s32 desktopDepth, const core::dimension2d<u32>& desktopSize)
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{
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Desktop.depth = desktopDepth;
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Desktop.size = desktopSize;
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}
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//! Gets amount of video modes in the list.
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s32 CVideoModeList::getVideoModeCount() const
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{
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return (s32)VideoModes.size();
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}
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//! Returns the screen size of a video mode in pixels.
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core::dimension2d<u32> CVideoModeList::getVideoModeResolution(s32 modeNumber) const
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{
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if (modeNumber < 0 || modeNumber > (s32)VideoModes.size())
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return core::dimension2d<u32>(0,0);
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return VideoModes[modeNumber].size;
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}
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core::dimension2d<u32> CVideoModeList::getVideoModeResolution(
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const core::dimension2d<u32>& minSize,
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const core::dimension2d<u32>& maxSize) const
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{
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u32 best=VideoModes.size();
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// if only one or no mode
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if (best<2)
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return getVideoModeResolution(0);
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u32 i;
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for (i=0; i<VideoModes.size(); ++i)
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{
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if (VideoModes[i].size.Width>=minSize.Width &&
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VideoModes[i].size.Height>=minSize.Height &&
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VideoModes[i].size.Width<=maxSize.Width &&
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VideoModes[i].size.Height<=maxSize.Height)
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best=i;
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}
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// we take the last one found, the largest one fitting
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if (best<VideoModes.size())
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return VideoModes[best].size;
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const u32 minArea = minSize.getArea();
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const u32 maxArea = maxSize.getArea();
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u32 minDist = 0xffffffff;
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best=0;
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for (i=0; i<VideoModes.size(); ++i)
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{
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const u32 area = VideoModes[i].size.getArea();
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const u32 dist = core::min_(abs(int(minArea-area)), abs(int(maxArea-area)));
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if (dist<minDist)
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{
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minDist=dist;
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best=i;
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}
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}
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return VideoModes[best].size;
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}
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//! Returns the pixel depth of a video mode in bits.
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s32 CVideoModeList::getVideoModeDepth(s32 modeNumber) const
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{
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if (modeNumber < 0 || modeNumber > (s32)VideoModes.size())
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return 0;
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return VideoModes[modeNumber].depth;
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}
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//! Returns current desktop screen resolution.
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const core::dimension2d<u32>& CVideoModeList::getDesktopResolution() const
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{
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return Desktop.size;
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}
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//! Returns the pixel depth of a video mode in bits.
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s32 CVideoModeList::getDesktopDepth() const
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{
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return Desktop.depth;
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}
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//! adds a new mode to the list
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void CVideoModeList::addMode(const core::dimension2d<u32>& size, s32 depth)
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{
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SVideoMode m;
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m.depth = depth;
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m.size = size;
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for (u32 i=0; i<VideoModes.size(); ++i)
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{
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if (VideoModes[i] == m)
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return;
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}
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VideoModes.push_back(m);
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VideoModes.sort(); // TODO: could be replaced by inserting into right place
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}
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} // end namespace video
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} // end namespace irr
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