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/*
Copyright (C) 2009 Kimmo Pekkola, Brian Todoroff
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 "MeterRoundLine.h"
#include "Measure.h"
#include "Error.h"
using namespace Gdiplus;
#define PI (3.14159265358979323846)
#define CONVERT_TO_DEGREES(X) ((X) * (180.0 / PI))
/*
** The constructor
**
*/
CMeterRoundLine::CMeterRoundLine(CMeterWindow* meterWindow, const WCHAR* name) : CMeter(meterWindow, name),
m_Solid(false),
m_LineWidth(1.0),
m_LineLength(20.0),
m_LineStart(-1.0),
m_StartAngle(),
m_RotationAngle(6.2832),
m_CntrlAngle(true),
m_CntrlLineStart(false),
m_CntrlLineLength(false),
m_LineStartShift(),
m_LineLengthShift(),
m_ValueRemainder(),
m_LineColor(Color::Black),
m_Value()
{
}
/*
** The destructor
**
*/
CMeterRoundLine::~CMeterRoundLine()
{
}
/*
** Read the options specified in the ini file.
**
*/
void CMeterRoundLine::ReadOptions(CConfigParser& parser, const WCHAR* section)
{
CMeter::ReadOptions(parser, section);
m_LineWidth = parser.ReadFloat(section, L"LineWidth", 1.0);
m_LineLength = parser.ReadFloat(section, L"LineLength", 20.0);
m_LineStart = parser.ReadFloat(section, L"LineStart", -1.0);
m_StartAngle = parser.ReadFloat(section, L"StartAngle", 0.0);
m_RotationAngle = parser.ReadFloat(section, L"RotationAngle", 6.2832);
m_ValueRemainder = parser.ReadInt(section, L"ValueReminder", 0); // Typo
m_ValueRemainder = parser.ReadInt(section, L"ValueRemainder", m_ValueRemainder);
m_LineColor = parser.ReadColor(section, L"LineColor", Color::Black);
m_Solid = 0!=parser.ReadInt(section, L"Solid", 0);
m_CntrlAngle = 0!=parser.ReadInt(section, L"ControlAngle", 1);
m_CntrlLineStart = 0!=parser.ReadInt(section, L"ControlStart", 0);
m_CntrlLineLength = 0!=parser.ReadInt(section, L"ControlLength", 0);
m_LineStartShift = parser.ReadFloat(section, L"StartShift", 0.0);
m_LineLengthShift = parser.ReadFloat(section, L"LengthShift", 0.0);
}
/*
** Updates the value(s) from the measures.
**
*/
bool CMeterRoundLine::Update()
{
if (CMeter::Update() && !m_Measures.empty())
{
CMeasure* measure = m_Measures[0];
if (m_ValueRemainder > 0)
{
LONGLONG time = (LONGLONG)measure->GetValue();
m_Value = (double)(time % m_ValueRemainder);
m_Value /= (double)m_ValueRemainder;
}
else
{
m_Value = measure->GetRelativeValue();
}
return true;
}
return false;
}
/*
** Draws the meter on the double buffer
**
*/
bool CMeterRoundLine::Draw(Graphics& graphics)
{
if (!CMeter::Draw(graphics)) return false;
// Calculate the center of for the line
int x = GetX();
int y = GetY();
double cx = x + m_W / 2.0;
double cy = y + m_H / 2.0;
double lineStart = ((m_CntrlLineStart) ? m_LineStartShift * m_Value : 0) + m_LineStart;
double lineLength = ((m_CntrlLineLength) ? m_LineLengthShift * m_Value : 0) + m_LineLength;
// Calculate the end point of the line
double angle = ((m_CntrlAngle) ? m_RotationAngle * m_Value : m_RotationAngle) + m_StartAngle;
double e_cos = cos(angle);
double e_sin = sin(angle);
REAL sx = (REAL)(e_cos * lineStart + cx);
REAL sy = (REAL)(e_sin * lineStart + cy);
REAL ex = (REAL)(e_cos * lineLength + cx);
REAL ey = (REAL)(e_sin * lineLength + cy);
if (m_Solid)
{
REAL startAngle = (REAL)(CONVERT_TO_DEGREES(m_StartAngle));
REAL sweepAngle = (REAL)(CONVERT_TO_DEGREES(m_RotationAngle * m_Value));
// Calculate the start point of the line
double s_cos = cos(m_StartAngle);
double s_sin = sin(m_StartAngle);
//Create a path to surround the arc
GraphicsPath path;
path.AddArc((REAL)(cx - lineStart), (REAL)(cy - lineStart), (REAL)(lineStart * 2.0), (REAL)(lineStart * 2.0), startAngle, sweepAngle);
path.AddLine((REAL)(lineStart * s_cos + cx), (REAL)(lineStart * s_sin + cy), (REAL)(lineLength * s_cos + cx), (REAL)(lineLength * s_sin + cy));
path.AddArc((REAL)(cx - lineLength), (REAL)(cy - lineLength), (REAL)(lineLength * 2.0), (REAL)(lineLength * 2.0), startAngle, sweepAngle);
path.AddLine(ex, ey, sx, sy);
SolidBrush solidBrush(m_LineColor);
graphics.FillPath(&solidBrush, &path);
}
else
{
Pen pen(m_LineColor, (REAL)m_LineWidth);
graphics.DrawLine(&pen, sx, sy, ex, ey);
}
return true;
}
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