rainmeter-studio/Library/MeterRotator.cpp

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/*
Copyright (C) 2001 Kimmo Pekkola
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "StdAfx.h"
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#include "MeterRotator.h"
#include "Measure.h"
#include "Error.h"
#include "Litestep.h"
#include "Rainmeter.h"
using namespace Gdiplus;
extern CRainmeter* Rainmeter;
/*
** CMeterRotator
**
** The constructor
**
*/
CMeterRotator::CMeterRotator(CMeterWindow* meterWindow) : CMeter(meterWindow)
{
m_Bitmap = NULL;
m_Value = 0.0;
}
/*
** ~CMeterRotator
**
** The destructor
**
*/
CMeterRotator::~CMeterRotator()
{
if(m_Bitmap != NULL) delete m_Bitmap;
}
/*
** Initialize
**
** Load the image & configs.
**
*/
void CMeterRotator::Initialize()
{
CMeter::Initialize();
// Load the bitmaps if defined
if(!m_ImageName.empty())
{
if (m_Bitmap != NULL) delete m_Bitmap;
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m_Bitmap = new Bitmap(m_ImageName.c_str());
Status status = m_Bitmap->GetLastStatus();
if(Ok != status)
{
DebugLog(L"Bitmap image not found: %s", m_ImageName.c_str());
delete m_Bitmap;
m_Bitmap = NULL;
}
}
else
{
if (m_Bitmap)
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{
delete m_Bitmap;
m_Bitmap = NULL;
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}
}
}
/*
** ReadConfig
**
** Read the meter-specific configs from the ini-file.
**
*/
void CMeterRotator::ReadConfig(const WCHAR* section)
{
// Store the current values so we know if the image needs to be updated
std::wstring oldImageName = m_ImageName;
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// Read common configs
CMeter::ReadConfig(section);
CConfigParser& parser = m_MeterWindow->GetParser();
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m_ImageName = parser.ReadString(section, L"ImageName", L"");
m_ImageName = m_MeterWindow->MakePathAbsolute(m_ImageName);
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m_OffsetX = parser.ReadFloat(section, L"OffsetX", 0.0);
m_OffsetY = parser.ReadFloat(section, L"OffsetY", 0.0);
m_StartAngle = parser.ReadFloat(section, L"StartAngle", 0.0);
m_RotationAngle = parser.ReadFloat(section, L"RotationAngle", 6.2832);
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m_ValueRemainder = parser.ReadInt(section, L"ValueReminder", 0); // Typo
m_ValueRemainder = parser.ReadInt(section, L"ValueRemainder", m_ValueRemainder);
if (m_Initialized &&
oldImageName != m_ImageName)
{
Initialize(); // Reload the image
}
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}
/*
** Update
**
** Updates the value(s) from the measures.
**
*/
bool CMeterRotator::Update()
{
if (CMeter::Update() && m_Measure)
{
if (m_ValueRemainder > 0)
{
LARGE_INTEGER time;
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time.QuadPart = (LONGLONG)m_Measure->GetValue();
m_Value = (double)(time.QuadPart % m_ValueRemainder);
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m_Value /= (double)m_ValueRemainder;
}
else
{
m_Value = m_Measure->GetRelativeValue();
}
return true;
}
return false;
}
/*
** Draw
**
** Draws the meter on the double buffer
**
*/
bool CMeterRotator::Draw(Graphics& graphics)
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{
if(!CMeter::Draw(graphics)) return false;
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// Calculate the center for rotation
int x = GetX();
int y = GetY();
REAL cx = (REAL)(x + m_W / 2.0);
REAL cy = (REAL)(y + m_H / 2.0);
// Calculate the rotation
REAL angle = (REAL)(m_RotationAngle * m_Value + m_StartAngle);
angle = angle * 180.0f / 3.14159265f; // Convert to degrees
graphics.TranslateTransform(cx, cy);
graphics.RotateTransform(angle);
graphics.TranslateTransform((REAL)-m_OffsetX, (REAL)-m_OffsetY);
if(m_Bitmap)
{
UINT width = m_Bitmap->GetWidth();
UINT height = m_Bitmap->GetHeight();
// Blit the image
graphics.DrawImage(m_Bitmap, 0, 0, width, height);
}
graphics.ResetTransform();
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return true;
}