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//************************************************************************
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//
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// LCDAnimatedBitmap.cpp
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//
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// The CLCDAnimatedBitmap class draws animated bitmaps onto the LCD.
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// An animated bitmap consists of a tiled bitmap representing the
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// animation. The tile size is set with the SetSubpicWidth.
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//
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// Logitech LCD SDK
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//
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// Copyright 2005 Logitech Inc.
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//************************************************************************
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#include "LCDAnimatedBitmap.h"
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//************************************************************************
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//
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// CLCDAnimatedBitmap::CLCDAnimatedBitmap
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//
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//************************************************************************
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CLCDAnimatedBitmap::CLCDAnimatedBitmap()
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{
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m_dwCurrSubpic = m_dwTotalSubpics = 0;
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}
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//************************************************************************
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//
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// CLCDAnimatedBitmap::CLCDAnimatedBitmap
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//
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//************************************************************************
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CLCDAnimatedBitmap::~CLCDAnimatedBitmap()
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{
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}
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//************************************************************************
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//
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// CLCDAnimatedBitmap::Initialize
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//
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//************************************************************************
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HRESULT CLCDAnimatedBitmap::Initialize(void)
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{
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m_dwRate = 250;
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m_dwElapsedTime = 0;
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m_dwLastUpdate = GetTickCount();
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return CLCDBitmap::Initialize();
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}
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//************************************************************************
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//
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// CLCDAnimatedBitmap::ResetUpdate
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//
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//************************************************************************
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void CLCDAnimatedBitmap::ResetUpdate(void)
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{
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m_dwCurrSubpic = 0;
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m_dwLastUpdate = GetTickCount();
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}
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//************************************************************************
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//
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// CLCDAnimatedBitmap::SetSubpicWidth
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//
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//************************************************************************
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void CLCDAnimatedBitmap::SetSubpicWidth(DWORD dwWidth)
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{
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m_dwSubpicWidth = dwWidth;
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LCDUIASSERT(NULL != m_hBitmap);
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LCDUIASSERT(0 != dwWidth);
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if((NULL != m_hBitmap) && (0 != dwWidth))
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{
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// figure out how many tiles we have
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BITMAP bitmap;
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if(GetObject(m_hBitmap, sizeof(bitmap), &bitmap))
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{
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m_dwTotalSubpics = bitmap.bmWidth / dwWidth;
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SetLogicalSize(bitmap.bmWidth, bitmap.bmHeight);
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}
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else
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{
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m_dwTotalSubpics = 0;
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}
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}
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else
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{
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m_dwTotalSubpics = 0;
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}
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}
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//************************************************************************
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//
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// CLCDAnimatedBitmap::SetAnimationRate
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//
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//************************************************************************
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void CLCDAnimatedBitmap::SetAnimationRate(DWORD dwRate)
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{
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m_dwRate = dwRate;
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}
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//************************************************************************
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//
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// CLCDAnimatedBitmap::OnUpdate
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//
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//************************************************************************
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void CLCDAnimatedBitmap::OnUpdate(DWORD dwTimestamp)
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{
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m_dwElapsedTime = (dwTimestamp - m_dwLastUpdate);
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}
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//************************************************************************
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//
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// CLCDAnimatedBitmap::OnDraw
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//
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//************************************************************************
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void CLCDAnimatedBitmap::OnDraw(CLCDGfx &rGfx)
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{
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if(m_dwTotalSubpics > 0)
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{
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int xoffs = m_dwCurrSubpic * m_dwSubpicWidth;
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DWORD increment = m_dwElapsedTime / m_dwRate;
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if(increment > 0)
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{
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m_dwCurrSubpic += increment;
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m_dwCurrSubpic %= m_dwTotalSubpics;
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m_dwElapsedTime %= m_dwRate;
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m_dwLastUpdate = GetTickCount();
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}
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// stolen from: CLCDBitmap::OnDraw(rGfx);
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if(m_hBitmap)
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{
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HDC hCompatibleDC = CreateCompatibleDC(rGfx.GetHDC());
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HBITMAP hOldBitmap = (HBITMAP)SelectObject(hCompatibleDC, m_hBitmap);
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// get
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BitBlt(rGfx.GetHDC(), 0, 0, m_Size.cx, m_Size.cy, hCompatibleDC, xoffs, 0, m_dwROP);
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// restores
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SelectObject(hCompatibleDC, hOldBitmap);
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DeleteDC(hCompatibleDC);
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}
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}
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}
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//** end of LCDAnimatedBitmap.cpp ****************************************
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