rainmeter-studio/Library/MeterLine.cpp
2009-02-14 10:11:28 +00:00

357 lines
7.1 KiB
C++

/*
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.
*/
#pragma warning(disable: 4786)
#pragma warning(disable: 4996)
#include "MeterLine.h"
#include "Measure.h"
#include "Error.h"
#include <crtdbg.h>
#include <gdiplus.h>
using namespace Gdiplus;
/*
** CMeterLine
**
** The constructor
**
*/
CMeterLine::CMeterLine(CMeterWindow* meterWindow) : CMeter(meterWindow)
{
m_Autoscale = false;
m_AntiAlias = false;
m_HorizontalLines = false;
m_HorizontalColor = 0;
m_CurrentPos = 0;
m_Flip = false;
m_LineWidth = 1.0;
}
/*
** ~CMeterLine
**
** The destructor
**
*/
CMeterLine::~CMeterLine()
{
}
/*
** Initialize
**
** create the buffer for the lines
**
*/
void CMeterLine::Initialize()
{
CMeter::Initialize();
std::vector<Color>::iterator i = m_Colors.begin();
for ( ; i != m_Colors.end(); i++)
{
m_AllValues.push_back(std::vector<double>());
}
}
/*
** ReadConfig
**
** Read the meter-specific configs from the ini-file.
**
*/
void CMeterLine::ReadConfig(const WCHAR* section)
{
int i;
WCHAR tmpName[256];
// Read common configs
CMeter::ReadConfig(section);
CConfigParser& parser = m_MeterWindow->GetParser();
int lineCount = parser.ReadInt(section, L"LineCount", 1);
for (i = 0; i < lineCount; i++)
{
if (i == 0)
{
wcscpy(tmpName, L"LineColor");
}
else
{
swprintf(tmpName, L"LineColor%i", i + 1);
}
m_Colors.push_back(parser.ReadColor(section, tmpName, Color::White));
if (i == 0)
{
wcscpy(tmpName, L"Scale");
}
else
{
swprintf(tmpName, L"Scale%i", i + 1);
}
m_ScaleValues.push_back(parser.ReadFloat(section, tmpName, 1.0));
if (i != 0)
{
swprintf(tmpName, L"MeasureName%i", i + 1);
m_MeasureNames.push_back(parser.ReadString(section, tmpName, L""));
}
}
m_Flip = 0!=parser.ReadInt(section, L"Flip", 0);
m_Autoscale = 0!=parser.ReadInt(section, L"AutoScale", 0);
m_AntiAlias = 0!=parser.ReadInt(section, L"AntiAlias", 0);
m_LineWidth = parser.ReadFloat(section, L"LineWidth", 1.0);
m_HorizontalLines = 0!=parser.ReadInt(section, L"HorizontalLines", 0);
m_HorizontalColor = parser.ReadColor(section, L"HorizontalColor", Color::Black);
}
/*
** Update
**
** Updates the value(s) from the measures.
**
*/
bool CMeterLine::Update()
{
if (CMeter::Update() && m_Measure)
{
// Collect the values
if (!m_Measure->IsDisabled())
{
double value = m_Measure->GetValue();
if ((int)m_AllValues[0].size() < m_W)
{
m_AllValues[0].push_back(value);
}
else
{
m_AllValues[0][m_CurrentPos] = value;
}
}
int counter = 1;
std::vector<CMeasure*>::iterator i = m_Measures.begin();
for ( ; i != m_Measures.end(); i++)
{
double value = (*i)->GetValue();
if ((int)m_AllValues[counter].size() < m_W)
{
m_AllValues[counter].push_back(value);
}
else
{
m_AllValues[counter][m_CurrentPos] = value;
}
counter++;
}
m_CurrentPos++;
if (m_CurrentPos >= m_W)
{
m_CurrentPos = 0;
}
return true;
}
return false;
}
/*
** Draw
**
** Draws the meter on the double buffer
**
*/
bool CMeterLine::Draw()
{
if(!CMeter::Draw()) return false;
double maxValue = 0.0;
int counter = 0;
// Find the maximum value
if (m_Autoscale)
{
double newValue = 0;
std::vector< std::vector<double> >::iterator i = m_AllValues.begin();
counter = 0;
for (; i != m_AllValues.end(); i++)
{
std::vector<double>::iterator j = (*i).begin();
for (; j != (*i).end(); j++)
{
newValue = max(newValue, (*j) * m_ScaleValues[counter]);
}
counter++;
}
// Scale the value up to nearest power of 2
maxValue = 2;
while(maxValue < newValue && maxValue != 0)
{
maxValue *= 2;
}
}
else
{
if (m_Measure)
{
maxValue = m_Measure->GetMaxValue();
std::vector<CMeasure*>::iterator i = m_Measures.begin();
for (; i != m_Measures.end(); i++)
{
maxValue = max(maxValue, (*i)->GetMaxValue());
}
}
}
if (maxValue == 0.0)
{
maxValue = 1.0;
}
Graphics graphics(m_MeterWindow->GetDoubleBuffer()); //GDI+
if (m_AntiAlias)
{
graphics.SetSmoothingMode(SmoothingModeAntiAlias);
}
int x = GetX();
int y = GetY();
// Draw the horizontal lines
if (m_HorizontalLines)
{
// Calc the max number of lines we should draw
int maxLines = m_H / 4; // one line per 4 pixels is max
int numOfLines;
// Check the highest power of 2 that fits in maxLines
int power = 2;
while(power < maxLines)
{
power *= 2;
}
numOfLines = ((int)maxValue % power) + 1;
Pen pen(m_HorizontalColor);
REAL Y;
for (int j = 0; j < numOfLines; j++)
{
Y = (REAL)((j + 1) * m_H / (numOfLines + 1));
Y = y + m_H - Y - 1;
graphics.DrawLine(&pen, (REAL)x, Y, (REAL)(x + m_W - 1), Y); // GDI+
}
}
// Draw all the lines
counter = 0;
std::vector< std::vector<double> >::iterator i = m_AllValues.begin();
for (; i != m_AllValues.end(); i++)
{
// Draw a line
int X = x;
REAL Y = 0;
REAL oldY = 0;
int pos = m_CurrentPos;
if (pos >= m_W) pos = 0;
Pen pen(m_Colors[counter], (REAL)m_LineWidth);
for (int j = 0; j < m_W; j++)
{
if (pos < (int)(*i).size())
{
Y = (REAL)((*i)[pos] * m_ScaleValues[counter] * (m_H - 1) / maxValue);
Y = min(Y, m_H - 1);
Y = max(Y, 0);
}
else
{
Y = 0;
}
if (m_Flip)
{
Y = y + Y;
}
else
{
Y = y + m_H - Y - 1;
}
if (j != 0)
{
graphics.DrawLine(&pen, (REAL)X - 1, oldY, (REAL)X, Y); // GDI+
}
oldY = Y;
X++;
pos++;
if (pos >= m_W) pos = 0;
}
counter++;
}
return true;
}
/*
** BindMeasure
**
** Overwritten method to handle the other measure bindings.
**
*/
void CMeterLine::BindMeasure(std::list<CMeasure*>& measures)
{
CMeter::BindMeasure(measures);
std::vector<std::wstring>::iterator j = m_MeasureNames.begin();
for (; j != m_MeasureNames.end(); j++)
{
// 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(), (*j).c_str()) == 0)
{
m_Measures.push_back(*i);
break;
}
}
if (i == measures.end())
{
throw CError(std::wstring(L"The meter [") + m_Name + L"] cannot be bound with [" + (*j) + L"]!", __LINE__, __FILE__);
}
}
}