rainmeter-studio/Library/MeterLine.cpp
2013-05-29 22:05:41 +03:00

451 lines
9.6 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "StdAfx.h"
#include "MeterLine.h"
#include "Measure.h"
#include "Logger.h"
#include "../Common/Gfx/Canvas.h"
using namespace Gdiplus;
/*
** The constructor
**
*/
CMeterLine::CMeterLine(CMeterWindow* meterWindow, const WCHAR* name) : CMeter(meterWindow, name),
m_Autoscale(false),
m_HorizontalLines(false),
m_Flip(false),
m_LineWidth(1.0),
m_HorizontalColor(Color::Black),
m_CurrentPos(),
m_GraphStartLeft(false),
m_GraphHorizontalOrientation(false)
{
}
/*
** The destructor
**
*/
CMeterLine::~CMeterLine()
{
}
/*
** create the buffer for the lines
**
*/
void CMeterLine::Initialize()
{
CMeter::Initialize();
size_t colorsSize = m_Colors.size();
size_t allValuesSize = m_AllValues.size();
size_t num = (allValuesSize > 0) ? m_AllValues[0].size() : 0;
int maxSize = m_GraphHorizontalOrientation ? m_H : m_W;
if (colorsSize != allValuesSize)
{
if (colorsSize > allValuesSize)
{
for (size_t i = allValuesSize; i < colorsSize; ++i)
{
m_AllValues.push_back(std::vector<double>());
if (maxSize > 0)
{
m_AllValues.back().assign(maxSize, 0.0);
}
}
}
else
{
m_AllValues.resize(colorsSize);
}
}
if (maxSize < 0 || num != (size_t)maxSize)
{
if (m_CurrentPos >= maxSize) m_CurrentPos = 0;
num = (maxSize < 0) ? 0 : maxSize;
for (size_t i = 0; i < allValuesSize; ++i)
{
if (num != m_AllValues[i].size())
{
m_AllValues[i].resize(num, 0.0);
}
}
}
}
/*
** Read the options specified in the ini file.
**
*/
void CMeterLine::ReadOptions(CConfigParser& parser, const WCHAR* section)
{
WCHAR tmpName[64];
// Store the current number of lines so we know if the buffer needs to be updated
int oldLineCount = (int)m_Colors.size();
int oldSize = m_GraphHorizontalOrientation ? m_H : m_W;
bool oldGraphHorizontalOrientation = m_GraphHorizontalOrientation;
CMeter::ReadOptions(parser, section);
int lineCount = parser.ReadInt(section, L"LineCount", 1);
m_Colors.clear();
m_ScaleValues.clear();
for (int i = 0; i < lineCount; ++i)
{
if (i == 0)
{
wcsncpy_s(tmpName, L"LineColor", _TRUNCATE);
}
else
{
_snwprintf_s(tmpName, _TRUNCATE, L"LineColor%i", i + 1);
}
m_Colors.push_back(parser.ReadColor(section, tmpName, Color::White));
if (i == 0)
{
wcsncpy_s(tmpName, L"Scale", _TRUNCATE);
}
else
{
_snwprintf_s(tmpName, _TRUNCATE, L"Scale%i", i + 1);
}
m_ScaleValues.push_back(parser.ReadFloat(section, tmpName, 1.0));
}
m_Flip = 0!=parser.ReadInt(section, L"Flip", 0);
m_Autoscale = 0!=parser.ReadInt(section, L"AutoScale", 0);
m_LineWidth = parser.ReadFloat(section, L"LineWidth", 1.0);
m_HorizontalLines = 0!=parser.ReadInt(section, L"HorizontalLines", 0);
ARGB color = parser.ReadColor(section, L"HorizontalColor", Color::Black); // This is left here for backwards compatibility
m_HorizontalColor = parser.ReadColor(section, L"HorizontalLineColor", color); // This is what it should be
const WCHAR* graph = parser.ReadString(section, L"GraphStart", L"RIGHT").c_str();
if (_wcsicmp(graph, L"RIGHT") == 0)
{
m_GraphStartLeft = false;
}
else if (_wcsicmp(graph, L"LEFT") == 0)
{
m_GraphStartLeft = true;
}
else
{
CLogger_ErrorF(L"GraphStart=%s is not valid in [%s]", graph, m_Name.c_str());
}
graph = parser.ReadString(section, L"GraphOrientation", L"VERTICAL").c_str();
if (_wcsicmp(graph, L"VERTICAL") == 0)
{
m_GraphHorizontalOrientation = false;
}
else if (_wcsicmp(graph, L"HORIZONTAL") == 0)
{
m_GraphHorizontalOrientation = true;
}
else
{
CLogger_ErrorF(L"GraphOrientation=%s is not valid in [%s]", graph, m_Name.c_str());
}
if (m_Initialized)
{
int maxSize = m_GraphHorizontalOrientation ? m_H : m_W;
if (oldLineCount != lineCount || oldSize != maxSize || oldGraphHorizontalOrientation != m_GraphHorizontalOrientation)
{
m_AllValues.clear();
m_CurrentPos = 0;
Initialize();
}
}
}
/*
** Updates the value(s) from the measures.
**
*/
bool CMeterLine::Update()
{
if (CMeter::Update() && !m_Measures.empty())
{
int maxSize = m_GraphHorizontalOrientation ? m_H : m_W;
if (maxSize > 0)
{
int allValuesSize = (int)m_AllValues.size();
int counter = 0;
for (auto i = m_Measures.cbegin(); counter < allValuesSize && i != m_Measures.cend(); ++i, ++counter)
{
m_AllValues[counter][m_CurrentPos] = (*i)->GetValue();
}
++m_CurrentPos;
m_CurrentPos %= maxSize;
}
return true;
}
return false;
}
/*
** Draws the meter on the double buffer
**
*/
bool CMeterLine::Draw(Gfx::Canvas& canvas)
{
int maxSize = m_GraphHorizontalOrientation ? m_H : m_W;
if (!CMeter::Draw(canvas) || maxSize <= 0) return false;
Gdiplus::Graphics& graphics = canvas.BeginGdiplusContext();
double maxValue = 0.0;
int counter = 0;
// Find the maximum value
if (m_Autoscale)
{
double newValue = 0;
counter = 0;
for (auto i = m_AllValues.cbegin(); i != m_AllValues.cend(); ++i)
{
double scale = m_ScaleValues[counter];
for (auto j = (*i).cbegin(); j != (*i).cend(); ++j)
{
double val = (*j) * scale;
newValue = max(newValue, val);
}
++counter;
}
// Scale the value up to nearest power of 2
if (newValue > DBL_MAX / 2.0)
{
maxValue = DBL_MAX;
}
else
{
maxValue = 2.0;
while (maxValue < newValue)
{
maxValue *= 2.0;
}
}
}
else
{
for (auto i = m_Measures.cbegin(); i != m_Measures.cend(); ++i)
{
double val = (*i)->GetMaxValue();
maxValue = max(maxValue, val);
}
if (maxValue == 0.0)
{
maxValue = 1.0;
}
}
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
if (m_GraphHorizontalOrientation)
{
const REAL W = m_W - 1.0f;
counter = 0;
for (auto i = m_AllValues.cbegin(); i != m_AllValues.cend(); ++i)
{
// Draw a line
REAL X, oldX;
const double scale = m_ScaleValues[counter] * W / maxValue;
int pos = m_CurrentPos;
auto calcX = [&](REAL& _x)
{
_x = (REAL)((*i)[pos] * scale);
_x = min(_x, W);
_x = max(_x, 0.0f);
_x = x + (m_GraphStartLeft ? _x : W - _x);
};
calcX(oldX);
// Cache all lines
GraphicsPath path;
if (!m_Flip)
{
for (int j = y + 1, R = y + m_H; j < R; ++j)
{
++pos;
pos %= m_H;
calcX(X);
path.AddLine(oldX, (REAL)(j - 1), X, (REAL)j);
oldX = X;
}
}
else
{
for (int j = y + m_H, R = y + 1; j > R; --j)
{
++pos;
pos %= m_H;
calcX(X);
path.AddLine(oldX, (REAL)(j - 1), X, (REAL)(j - 2));
oldX = X;
}
}
// Draw cached lines
Pen pen(m_Colors[counter], (REAL)m_LineWidth);
pen.SetLineJoin(LineJoinBevel);
graphics.DrawPath(&pen, &path);
++counter;
}
}
else
{
const REAL H = m_H - 1.0f;
counter = 0;
for (auto i = m_AllValues.cbegin(); i != m_AllValues.cend(); ++i)
{
// Draw a line
REAL Y, oldY;
const double scale = m_ScaleValues[counter] * H / maxValue;
int pos = m_CurrentPos;
auto calcY = [&](REAL& _y)
{
_y = (REAL)((*i)[pos] * scale);
_y = min(_y, H);
_y = max(_y, 0.0f);
_y = y + (m_Flip ? _y : H - _y);
};
calcY(oldY);
// Cache all lines
GraphicsPath path;
if (!m_GraphStartLeft)
{
for (int j = x + 1, R = x + m_W; j < R; ++j)
{
++pos;
pos %= m_W;
calcY(Y);
path.AddLine((REAL)(j - 1), oldY, (REAL)j, Y);
oldY = Y;
}
}
else
{
for (int j = x + m_W, R = x + 1; j > R; --j)
{
++pos;
pos %= m_W;
calcY(Y);
path.AddLine((REAL)(j - 1), oldY, (REAL)(j - 2), Y);
oldY = Y;
}
}
// Draw cached lines
Pen pen(m_Colors[counter], (REAL)m_LineWidth);
pen.SetLineJoin(LineJoinBevel);
graphics.DrawPath(&pen, &path);
++counter;
}
}
canvas.EndGdiplusContext();
return true;
}
/*
** Overwritten method to handle the other measure bindings.
**
*/
void CMeterLine::BindMeasures(CConfigParser& parser, const WCHAR* section)
{
if (BindPrimaryMeasure(parser, section, false))
{
BindSecondaryMeasures(parser, section);
}
}