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rainmeter-studio/Library/MeterHistogram.cpp
Kimmo Pekkola 30edc895f2
2009-02-10 18:37:48 +00:00

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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.
*/
/*
$Header: /home/cvsroot/Rainmeter/Library/MeterHistogram.cpp,v 1.1.1.1 2005/07/10 18:51:06 rainy Exp $
$Log: MeterHistogram.cpp,v $
Revision 1.1.1.1 2005/07/10 18:51:06 rainy
no message
Revision 1.17 2004/07/11 17:17:23 rainy
Fixed a crash bug with max value.
Revision 1.16 2004/06/05 10:55:54 rainy
Too much changes to be listed in here...
Revision 1.15 2003/02/10 18:12:45 rainy
Now uses GDI+
Revision 1.14 2002/07/01 15:32:51 rainy
Removed include to lsapi.h
Revision 1.13 2002/05/04 08:14:11 rainy
Histogram now draws the lines one pixel higher.
Revision 1.12 2002/04/26 18:28:17 rainy
The meter is not updated if both measures are disabled.
Revision 1.11 2002/04/26 18:22:02 rainy
Added possibility to hide the meter.
Revision 1.10 2002/03/31 09:58:53 rainy
Added some comments
Revision 1.9 2001/12/23 10:14:51 rainy
Hex color values are now also supported.
Revision 1.8 2001/10/28 10:19:40 rainy
Fixed a bug with secondary measure not set correctly
Revision 1.7 2001/10/14 07:32:33 rainy
In error situations CError is thrown instead just a boolean value.
Revision 1.6 2001/09/26 16:26:37 rainy
Small adjustement to the interfaces.
Implemented BindMeasure()
Revision 1.5 2001/09/01 12:58:48 rainy
Removed MaxValues (i.e. they aren't stored anymore).
Fixed a bug in bitmap histogram placement.
Revision 1.4 2001/08/25 17:07:28 rainy
Added support for background images behind the curves.
Revision 1.3 2001/08/19 09:13:13 rainy
Invert moved to the measures.
Revision 1.2 2001/08/12 15:38:54 Rainy
Adjusted Update()'s interface.
Added invert for the secondary measure.
Revision 1.1.1.1 2001/08/11 10:58:19 Rainy
Added to CVS.
*/
#pragma warning(disable: 4786)
#pragma warning(disable: 4996)
#include "MeterHistogram.h"
#include "Measure.h"
#include "Error.h"
#include "Rainmeter.h"
using namespace Gdiplus;
extern CRainmeter* Rainmeter;
/*
** CMeterHistogram
**
** The constructor
**
*/
CMeterHistogram::CMeterHistogram(CMeterWindow* meterWindow) : CMeter(meterWindow)
{
m_SecondaryMeasure = NULL;
m_PrimaryColor = 0;
m_SecondaryColor = 0;
m_BothColor = 0;
m_MeterPos = 0;
m_PrimaryBitmap = NULL;
m_SecondaryBitmap = NULL;
m_BothBitmap = NULL;
m_PrimaryValues = NULL;
m_SecondaryValues = NULL;
m_Autoscale = false;
m_Flip = false;
m_MaxPrimaryValue = 1.0;
m_MinPrimaryValue = 0.0;
m_MaxSecondaryValue = 1.0;
m_MinSecondaryValue = 0.0;
}
/*
** ~CMeterHistogram
**
** The destructor
**
*/
CMeterHistogram::~CMeterHistogram()
{
if (m_PrimaryBitmap) delete m_PrimaryBitmap;
if (m_SecondaryBitmap) delete m_SecondaryBitmap;
if (m_BothBitmap) delete m_BothBitmap;
if (m_PrimaryValues) delete [] m_PrimaryValues;
if (m_SecondaryValues) delete [] m_SecondaryValues;
}
/*
** Initialize
**
** Load the images and calculate the dimensions of the meter from them.
** Or create the brushes if solid color histogram is used.
**
*/
void CMeterHistogram::Initialize()
{
CMeter::Initialize();
// Load the bitmaps if defined
if(!m_PrimaryImageName.empty())
{
m_PrimaryBitmap = new Bitmap(m_PrimaryImageName.c_str());
Status status = m_PrimaryBitmap->GetLastStatus();
if(Ok != status)
{
throw CError(std::wstring(L"PrimaryImage not found: ") + m_PrimaryImageName, __LINE__, __FILE__);
}
m_W = m_PrimaryBitmap->GetWidth();
m_H = m_PrimaryBitmap->GetHeight();
}
if(!m_SecondaryImageName.empty())
{
m_SecondaryBitmap = new Bitmap(m_SecondaryImageName.c_str());
Status status = m_SecondaryBitmap->GetLastStatus();
if(Ok != status)
{
throw CError(std::wstring(L"SecondaryImage not found: ") + m_SecondaryImageName, __LINE__, __FILE__);
}
}
if(!m_BothImageName.empty())
{
m_BothBitmap = new Bitmap(m_BothImageName.c_str());
Status status = m_BothBitmap->GetLastStatus();
if(Ok != status)
{
throw CError(std::wstring(L"BothImage not found: ") + m_BothImageName, __LINE__, __FILE__);
}
}
// A sanity check
if (m_SecondaryMeasure && !m_PrimaryImageName.empty() && (m_BothImageName.empty() || m_SecondaryImageName.empty()))
{
throw CError(std::wstring(L"You need to define SecondaryImage and BothImage also!"), __LINE__, __FILE__);
}
// Create buffers for values
m_PrimaryValues = new double[m_W];
memset(m_PrimaryValues, 0, sizeof(double) * m_W);
if (m_SecondaryMeasure)
{
m_SecondaryValues = new double[m_W];
memset(m_SecondaryValues, 0, sizeof(double) * m_W);
}
}
/*
** ReadConfig
**
** Read the meter-specific configs from the ini-file.
**
*/
void CMeterHistogram::ReadConfig(const WCHAR* section)
{
// Read common configs
CMeter::ReadConfig(section);
CConfigParser& parser = m_MeterWindow->GetParser();
m_PrimaryColor = parser.ReadColor(section, L"PrimaryColor", Color::Green);
m_SecondaryColor = parser.ReadColor(section, L"SecondaryColor", Color::Red);
m_BothColor = parser.ReadColor(section, L"BothColor", Color::Yellow);
m_SecondaryMeasureName = parser.ReadString(section, L"SecondaryMeasureName", L"");
m_PrimaryImageName = parser.ReadString(section, L"PrimaryImage", L"");
m_PrimaryImageName = Rainmeter->FixPath(m_PrimaryImageName, PATH_FOLDER_CURRENT_SKIN, m_MeterWindow->GetSkinName());
m_SecondaryImageName = parser.ReadString(section, L"SecondaryImage", L"");
m_SecondaryImageName = Rainmeter->FixPath(m_SecondaryImageName, PATH_FOLDER_CURRENT_SKIN, m_MeterWindow->GetSkinName());
m_BothImageName = parser.ReadString(section, L"BothImage", L"");
m_BothImageName = Rainmeter->FixPath(m_BothImageName, PATH_FOLDER_CURRENT_SKIN, m_MeterWindow->GetSkinName());
m_Autoscale = 0!=parser.ReadInt(section, L"AutoScale", 0);
m_Flip = 0!=parser.ReadInt(section, L"Flip", 0);
}
/*
** Update
**
** Updates the value(s) from the measures.
**
*/
bool CMeterHistogram::Update()
{
if (CMeter::Update() && m_Measure)
{
// Gather values
m_PrimaryValues[m_MeterPos] = m_Measure->GetValue();
if (m_SecondaryMeasure != NULL)
{
m_SecondaryValues[m_MeterPos] = m_SecondaryMeasure->GetValue();
}
m_MeterPos++;
m_MeterPos %= m_W;
m_MaxPrimaryValue = m_Measure->GetMaxValue();
m_MinPrimaryValue = m_Measure->GetMinValue();
m_MaxSecondaryValue = 0;
m_MinSecondaryValue = 0;
if (m_SecondaryMeasure)
{
m_MaxSecondaryValue = m_SecondaryMeasure->GetMaxValue();
m_MinSecondaryValue = m_SecondaryMeasure->GetMinValue();
}
if (m_Autoscale)
{
// Go through all values and find the max
int i;
double newValue = 0;
for (i = 0; i != m_W; i++)
{
newValue = max(newValue, m_PrimaryValues[i]);
}
// Scale the value up to nearest power of 2
m_MaxPrimaryValue = 2;
while(m_MaxPrimaryValue < newValue && m_MaxPrimaryValue != 0)
{
m_MaxPrimaryValue *= 2;
}
if (m_SecondaryMeasure)
{
for (i = 0; i != m_W; i++)
{
newValue = max(newValue, m_SecondaryValues[i]);
}
// Scale the value up to nearest power of 2
m_MaxSecondaryValue = 2;
while(m_MaxSecondaryValue < newValue && m_MaxSecondaryValue != 0)
{
m_MaxSecondaryValue *= 2;
}
}
}
return true;
}
return false;
}
/*
** Draw
**
** Draws the meter on the double buffer
**
*/
bool CMeterHistogram::Draw()
{
if(!CMeter::Draw()) return false;
Graphics graphics(m_MeterWindow->GetDoubleBuffer());
Pen primaryPen(m_PrimaryColor);
Pen secondaryPen(m_SecondaryColor);
Pen bothPen(m_BothColor);
int x = GetX();
int y = GetY();
for (int i = 0; i < m_W; i++)
{
double value;
if (m_MaxPrimaryValue == 0.0)
{
value = 0;
}
else
{
value = m_PrimaryValues[(i + m_MeterPos) % m_W] / m_MaxPrimaryValue;
}
value -= m_MinPrimaryValue;
int primaryBarHeight = (int)(m_H * value);
primaryBarHeight = min(m_H, primaryBarHeight);
primaryBarHeight = max(0, primaryBarHeight);
if (m_SecondaryMeasure != NULL)
{
if (m_MaxSecondaryValue == 0.0)
{
value = 0;
}
else
{
value = m_SecondaryValues[(i + m_MeterPos) % m_W] / m_MaxSecondaryValue;
}
value -= m_MinSecondaryValue;
int secondaryBarHeight = (int)(m_H * value);
secondaryBarHeight = min(m_H, secondaryBarHeight);
secondaryBarHeight = max(0, secondaryBarHeight);
// Check which measured value is higher
int bothBarHeight;
if (secondaryBarHeight > primaryBarHeight)
{
bothBarHeight = primaryBarHeight;
}
else
{
bothBarHeight = secondaryBarHeight;
}
// Draw image/color for the both lines
if (m_PrimaryBitmap)
{
if (m_Flip)
{
Rect r(x + i, y + bothBarHeight, 1, -bothBarHeight);
graphics.DrawImage(m_BothBitmap, r, i, m_H - bothBarHeight, 1, bothBarHeight, UnitPixel);
}
else
{
Rect r(x + i, y + m_H - bothBarHeight, 1, bothBarHeight);
graphics.DrawImage(m_BothBitmap, r, i, m_H - bothBarHeight, 1, bothBarHeight, UnitPixel);
}
}
else
{
if (m_Flip)
{
graphics.DrawLine(&bothPen, x + i, y, x + i, y + bothBarHeight);
}
else
{
graphics.DrawLine(&bothPen, x + i, y + m_H, x + i, y + m_H - bothBarHeight);
}
}
// Draw the image/color for the rest
if (secondaryBarHeight > primaryBarHeight)
{
if (m_SecondaryBitmap)
{
if (m_Flip)
{
Rect r(x + i, y + secondaryBarHeight, 1, -(secondaryBarHeight - bothBarHeight));
graphics.DrawImage(m_SecondaryBitmap, r, i, m_H - secondaryBarHeight, 1, secondaryBarHeight - bothBarHeight, UnitPixel);
}
else
{
Rect r(x + i, y + m_H - secondaryBarHeight, 1, secondaryBarHeight - bothBarHeight);
graphics.DrawImage(m_SecondaryBitmap, r, i, m_H - secondaryBarHeight, 1, secondaryBarHeight - bothBarHeight, UnitPixel);
}
}
else
{
if (m_Flip)
{
graphics.DrawLine(&secondaryPen, x + i, y + bothBarHeight, x + i, y + secondaryBarHeight);
}
else
{
graphics.DrawLine(&secondaryPen, x + i, y + m_H - bothBarHeight, x + i, y + m_H - secondaryBarHeight);
}
}
}
else
{
if (m_PrimaryBitmap)
{
if (m_Flip)
{
Rect r(x + i, y + primaryBarHeight, 1, -(primaryBarHeight - bothBarHeight));
graphics.DrawImage(m_PrimaryBitmap, r, i, m_H - primaryBarHeight, 1, primaryBarHeight - bothBarHeight, UnitPixel);
}
else
{
Rect r(x + i, y + m_H - primaryBarHeight, 1, primaryBarHeight - bothBarHeight);
graphics.DrawImage(m_PrimaryBitmap, r, i, m_H - primaryBarHeight, 1, primaryBarHeight - bothBarHeight, UnitPixel);
}
}
else
{
if (m_Flip)
{
graphics.DrawLine(&primaryPen, x + i, y, x + i, y + primaryBarHeight);
}
else
{
graphics.DrawLine(&primaryPen, x + i, y + m_H - bothBarHeight, x + i, y + m_H - primaryBarHeight);
}
}
}
}
else
{
if (m_PrimaryBitmap)
{
if (m_Flip)
{
Rect r(x + i, y + primaryBarHeight, 1, -primaryBarHeight);
graphics.DrawImage(m_PrimaryBitmap, r, i, m_H - primaryBarHeight, 1, primaryBarHeight, UnitPixel);
}
else
{
Rect r(x + i, y + m_H - primaryBarHeight, 1, primaryBarHeight);
graphics.DrawImage(m_PrimaryBitmap, r, i, m_H - primaryBarHeight, 1, primaryBarHeight, UnitPixel);
}
}
else
{
if (m_Flip)
{
graphics.DrawLine(&primaryPen, x + i, y, x + i, y + primaryBarHeight);
}
else
{
graphics.DrawLine(&primaryPen, x + i, y + m_H, x + i, y + m_H - primaryBarHeight);
}
}
}
}
return true;
}
/*
** BindMeasure
**
** Overwritten method to handle the secondary measure binding.
**
*/
void CMeterHistogram::BindMeasure(std::list<CMeasure*>& measures)
{
CMeter::BindMeasure(measures);
if(!m_SecondaryMeasureName.empty())
{
// Go through the list and check it there is a secondary measure for us
std::list<CMeasure*>::iterator i = measures.begin();
for( ; i != measures.end(); i++)
{
if(_wcsicmp((*i)->GetName(), m_SecondaryMeasureName.c_str()) == 0)
{
m_SecondaryMeasure = (*i);
return;
}
}
throw CError(std::wstring(L"The meter [") + m_Name + L"] cannot be bound with [" + m_SecondaryMeasureName + L"]!", __LINE__, __FILE__);
}
}
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