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LCDAnimatedBitmap.cpp
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146 lines (118 loc) · 4 KB
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//************************************************************************
// The Logitech LCD SDK, including all acompanying documentation,
// is protected by intellectual property laws. All use of the Logitech
// LCD SDK is subject to the License Agreement found in the
// "Logitech LCD SDK License Agreement" file and in the Reference Manual.
// All rights not expressly granted by Logitech are reserved.
//************************************************************************
//************************************************************************
//
// LCDAnimatedBitmap.cpp
//
// The CLCDAnimatedBitmap class draws animated bitmaps onto the LCD.
// An animated bitmap consists of a tiled bitmap representing the
// animation. The tile size is set with the SetSubpicWidth.
//
// Logitech LCD SDK
//
// Copyright 2010 Logitech Inc.
//************************************************************************
#include "LCDUI.h"
//************************************************************************
//
// CLCDAnimatedBitmap::CLCDAnimatedBitmap
//
//************************************************************************
CLCDAnimatedBitmap::CLCDAnimatedBitmap(void)
{
m_dwCurrSubpic = 0;
m_dwTotalSubpics = 0;
}
//************************************************************************
//
// CLCDAnimatedBitmap::CLCDAnimatedBitmap
//
//************************************************************************
CLCDAnimatedBitmap::~CLCDAnimatedBitmap(void)
{
}
//************************************************************************
//
// CLCDAnimatedBitmap::Initialize
//
//************************************************************************
HRESULT CLCDAnimatedBitmap::Initialize(void)
{
m_dwRate = 250;
m_dwElapsedTime = 0;
m_dwLastUpdate = GetTickCount();
return S_OK;
}
//************************************************************************
//
// CLCDAnimatedBitmap::ResetUpdate
//
//************************************************************************
void CLCDAnimatedBitmap::ResetUpdate(void)
{
m_dwCurrSubpic = 0;
m_dwLastUpdate = GetTickCount();
}
//************************************************************************
//
// CLCDAnimatedBitmap::SetSubpicWidth
//
//************************************************************************
void CLCDAnimatedBitmap::SetSubpicWidth(DWORD dwWidth)
{
m_dwSubpicWidth = dwWidth;
LCDUIASSERT(NULL != m_hBitmap);
LCDUIASSERT(0 != dwWidth);
if((NULL != m_hBitmap) && (0 != dwWidth))
{
// figure out how many tiles we have
BITMAP bitmap;
if(GetObject(m_hBitmap, sizeof(bitmap), &bitmap))
{
m_dwTotalSubpics = bitmap.bmWidth / dwWidth;
SetLogicalSize(bitmap.bmWidth, bitmap.bmHeight);
}
else
{
m_dwTotalSubpics = 0;
}
}
else
{
m_dwTotalSubpics = 0;
}
}
//************************************************************************
//
// CLCDAnimatedBitmap::SetAnimationRate
//
//************************************************************************
void CLCDAnimatedBitmap::SetAnimationRate(DWORD dwRate)
{
m_dwRate = dwRate;
}
//************************************************************************
//
// CLCDAnimatedBitmap::OnUpdate
//
//************************************************************************
void CLCDAnimatedBitmap::OnUpdate(DWORD dwTimestamp)
{
m_dwElapsedTime = (dwTimestamp - m_dwLastUpdate);
// Just update the logical origin
SetLogicalOrigin(-1 * m_dwSubpicWidth * m_dwCurrSubpic, 0);
DWORD increment = m_dwElapsedTime / m_dwRate;
if(increment > 0)
{
m_dwCurrSubpic += increment;
m_dwCurrSubpic %= m_dwTotalSubpics;
m_dwElapsedTime %= m_dwRate;
m_dwLastUpdate = GetTickCount();
}
}
//** end of LCDAnimatedBitmap.cpp ****************************************