108 lines
2.2 KiB
C++
108 lines
2.2 KiB
C++
//========= Copyright © 1996-2002, Valve LLC, All rights reserved. ============
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================
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#include "../cl_dll/cl_dll.h"
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#include "VGUI.h"
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#include "vgui_loadtga.h"
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#include "VGUI_InputStream.h"
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// ---------------------------------------------------------------------- //
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// Helper class for loading tga files.
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// ---------------------------------------------------------------------- //
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class MemoryInputStream : public vgui::InputStream
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{
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public:
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MemoryInputStream()
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{
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m_pData = NULL;
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m_DataLen = m_ReadPos = 0;
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}
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void seekStart(bool& success) override
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{
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m_ReadPos = 0;
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success = true;
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}
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void seekRelative(int count, bool& success) override
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{
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m_ReadPos += count;
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success = true;
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}
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void seekEnd(bool& success) override
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{
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m_ReadPos = m_DataLen;
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success = true;
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}
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int getAvailable(bool& success) override
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{
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success = false;
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return 0;
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} // This is what vgui does for files...
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uchar readUChar(bool& success) override
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{
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if (m_ReadPos >= 0 && m_ReadPos < m_DataLen)
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{
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success = true;
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uchar ret = m_pData[m_ReadPos];
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++m_ReadPos;
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return ret;
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}
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else
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{
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success = false;
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return 0;
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}
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}
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void readUChar(uchar* buf, int count, bool& success) override
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{
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for (int i = 0; i < count; i++)
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buf[i] = readUChar(success);
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}
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void close(bool& success) override
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{
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m_pData = NULL;
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m_DataLen = m_ReadPos = 0;
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}
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uchar* m_pData;
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int m_DataLen;
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int m_ReadPos;
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};
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vgui::BitmapTGA* vgui_LoadTGA(char const* pFilename)
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{
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MemoryInputStream stream;
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stream.m_pData = gEngfuncs.COM_LoadFile((char*)pFilename, 5, &stream.m_DataLen);
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if (!stream.m_pData)
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return NULL;
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stream.m_ReadPos = 0;
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vgui::BitmapTGA* pRet = new vgui::BitmapTGA(&stream, true);
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gEngfuncs.COM_FreeFile(stream.m_pData);
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return pRet;
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}
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vgui::BitmapTGA* vgui_LoadTGANoInvertAlpha(char const* pFilename)
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{
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MemoryInputStream stream;
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stream.m_pData = gEngfuncs.COM_LoadFile((char*)pFilename, 5, &stream.m_DataLen);
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if (!stream.m_pData)
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return NULL;
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stream.m_ReadPos = 0;
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vgui::BitmapTGA* pRet = new vgui::BitmapTGA(&stream, false);
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gEngfuncs.COM_FreeFile(stream.m_pData);
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return pRet;
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}
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