// Calculates tab's elements, based on its width and height.
// Generates a GraphicsPath, which is used for painting the tab, etc.
bool Reshape(int dx, int dy) {
dx--;
if (width == dx && height == dy)
return false;
width = dx; height = dy;
GraphicsPath shape;
// define tab's body
int c = int((float)height * 0.6f + 0.5f); // size of bounding square for the arc
shape.AddArc(0, 0, c, c, 180.0f, 90.0f);
shape.AddArc(width - c, 0, c, c, 270.0f, 90.0f);
shape.AddLine(width, height, 0, height);
shape.CloseFigure();
shape.SetMarker();
// define "x"'s circle
c = height > 17 ? 14 : int((float)height * 0.78f + 0.5f); // size of bounding square for the circle
Point p(width - c - 3, (height - c) / 2); // circle's position
shape.AddEllipse(p.X, p.Y, c, c);
shape.SetMarker();
// define "x"
int o = int((float)c * 0.286f + 0.5f); // "x"'s offset
shape.AddLine(p.X+o, p.Y+o, p.X+c-o, p.Y+c-o);
shape.StartFigure();
shape.AddLine(p.X+c-o, p.Y+o, p.X+o, p.Y+c-o);
shape.SetMarker();
delete data;
data = new PathData();
shape.GetPathData(data);
return true;
}
// Calculates tab's elements, based on its width and height.
// Generates a GraphicsPath, which is used for painting the tab, etc.
bool Reshape(int dx, int dy) {
dx--;
if (width == dx && height == dy)
return false;
width = dx;
height = dy;
GraphicsPath shape;
// define tab's body
shape.AddRectangle(Rect(0, 0, width, height));
shape.SetMarker();
// define "x"'s circle
int c = int((float)height * 0.78f + 0.5f); // size of bounding square for the circle
int maxC = DpiScaleX(hwnd, 17);
if (height > maxC) {
c = DpiScaleX(hwnd, 17);
}
Point p(width - c - DpiScaleX(hwnd, 3), (height - c) / 2); // circle's position
shape.AddEllipse(p.X, p.Y, c, c);
shape.SetMarker();
// define "x"
int o = int((float)c * 0.286f + 0.5f); // "x"'s offset
shape.AddLine(p.X + o, p.Y + o, p.X + c - o, p.Y + c - o);
shape.StartFigure();
shape.AddLine(p.X + c - o, p.Y + o, p.X + o, p.Y + c - o);
shape.SetMarker();
delete data;
data = new PathData();
shape.GetPathData(data);
return true;
}
/*
** Draws the meter on the double buffer
**
*/
bool MeterSegmentedLine::Draw(Gfx::Canvas& canvas)
{
int maxSize = m_DataWidth;
if (!Meter::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;
}
}
Gdiplus::Rect meterRect = GetMeterRectPadding();
// Draw all the lines
const REAL H = meterRect.Height - 1.0f;
counter = 0;
auto pointsBuffer = m_Points.cbegin();
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, REAL stepSize, int currPos) //TODO: move this lambda elsewhere
{
_y = 0;
switch (m_CurveFitMethod)
{
//first value
case 0: _y = (REAL)((*i)[currPos]);
break;
//maximum value
case 1: for (int ind = 0; ind < stepSize; ind++)
_y = max(_y, (REAL)((*i)[(currPos + ind) % m_DataWidth]));
break;
//arithmetic mean
case 2: for (int ind = 0; ind < stepSize; ind++)
_y += (REAL)((*i)[(currPos + ind) % m_DataWidth]);
_y /= stepSize;
break;
default: _y = (REAL)((*i)[currPos]);
}
_y *= scale;
_y = min(_y, H);
_y = max(_y, 0.0f);
_y = meterRect.Y + (H - _y);
};
// Cache all lines
GraphicsPath path;
int segmentInd = 0,
step,
divider;
//compute y values
step = m_SegmentDividers[m_SegmentDividers.size() - 1];
divider = m_Segments.size() > 0 ? m_W - m_Segments[m_Segments.size() - 1] : m_W;
for (int j = 0; j < m_W; ++j)
{
calcY(Y, step, pos - pos % step);
(*pointsBuffer)[j] = Y;
if (segmentInd < m_Segments.size() && j >= divider)
{
segmentInd++;
step = m_SegmentDividers[m_SegmentDividers.size() - segmentInd - 1];
divider = segmentInd != m_Segments.size() ? m_W - m_Segments[m_Segments.size() - segmentInd - 1] : m_W;
}
pos += step;
pos %= m_DataWidth;
}
//draw y values
segmentInd = 0;
divider = m_Segments.size() > 0 ? m_W - m_Segments[m_Segments.size() - segmentInd - 1] : m_W;
if (!m_GraphStartLeft)
{
for (int j = 1; j < m_W; ++j)
{
if (segmentInd < m_Segments.size() && j >= divider)
{
segmentInd++;
path.SetMarker();
path.StartFigure();
divider = segmentInd != m_Segments.size() ? m_W - m_Segments[m_Segments.size() - segmentInd - 1] : m_W;
}
path.AddLine((REAL)(meterRect.X + j - 1), (*pointsBuffer)[j - 1], (REAL)(meterRect.X + j), (*pointsBuffer)[j]);
}
}
else
{
for (int j = 1; j < m_W; ++j)
{
if (segmentInd < m_Segments.size() && j >= divider)
{
segmentInd++;
path.SetMarker();
path.StartFigure();
divider = segmentInd != m_Segments.size() ? m_W - m_Segments[m_Segments.size() - segmentInd - 1] : m_W;
}
path.AddLine((REAL)(meterRect.X + meterRect.Width - j), (*pointsBuffer)[j - 1], (REAL)(meterRect.X + meterRect.Width - j - 1), (*pointsBuffer)[j]);
}
}
// Draw cached lines
GraphicsPathIterator pathIter(&path);
GraphicsPath subPath;
for (auto color = m_Colors[counter].rbegin(); color != m_Colors[counter].rend(); ++color)
{
pathIter.NextMarker(&subPath);
Pen pen(*color, (REAL)m_LineWidth);
pen.SetLineJoin(LineJoinRound);
graphics.DrawPath(&pen, &subPath);
}
++counter;
++pointsBuffer;
}
canvas.EndGdiplusContext();
return true;
}
