/*
** Draws the meter on the double buffer
**
*/
bool MeterRoundLine::Draw(Gfx::Canvas& canvas)
{
if (!Meter::Draw(canvas)) return false;
Gdiplus::Graphics& graphics = canvas.BeginGdiplusContext();
// 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)(fmod(CONVERT_TO_DEGREES(m_StartAngle), 360.0));
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);
}
canvas.EndGdiplusContext();
return true;
}
/*
** Draws the meter on the double buffer
**
*/
bool MeterButton::Draw(Gfx::Canvas& canvas)
{
if (!Meter::Draw(canvas)) return false;
if (m_Bitmaps[m_State] == nullptr) return false; // Unable to continue
Gdiplus::Graphics& graphics = canvas.BeginGdiplusContext();
Gdiplus::Rect meterRect = GetMeterRectPadding();
// Blit the image
graphics.DrawCachedBitmap(m_Bitmaps[m_State], meterRect.X, meterRect.Y);
canvas.EndGdiplusContext();
return true;
}
/*
** Draws the solid background & bevel if such are defined
*/
bool Meter::Draw(Gfx::Canvas& canvas)
{
if (IsHidden()) return false;
canvas.SetAntiAliasing(m_AntiAlias);
if (m_SolidColor.GetA() != 0 || m_SolidColor2.GetA() != 0)
{
int x = GetX();
int y = GetY();
Rect r(x, y, m_W, m_H);
if (m_SolidColor.GetValue() == m_SolidColor2.GetValue())
{
SolidBrush solid(m_SolidColor);
canvas.FillRectangle(r, solid);
}
else
{
Gdiplus::Graphics& graphics = canvas.BeginGdiplusContext();
if (!m_AntiAlias)
{
// Fix the tiling issue in some GradientAngle values
graphics.SetPixelOffsetMode(PixelOffsetModeHalf);
}
LinearGradientBrush gradient(r, m_SolidColor, m_SolidColor2, m_SolidAngle, TRUE);
graphics.FillRectangle(&gradient, r);
if (!m_AntiAlias)
{
graphics.SetPixelOffsetMode(PixelOffsetModeDefault);
}
canvas.EndGdiplusContext();
}
}
if (m_SolidBevel != BEVELTYPE_NONE)
{
Gdiplus::Graphics& graphics = canvas.BeginGdiplusContext();
int x = GetX();
int y = GetY();
Color lightColor(255, 255, 255, 255);
Color darkColor(255, 0, 0, 0);
if (m_SolidBevel == BEVELTYPE_DOWN)
{
lightColor.SetValue(Color::MakeARGB(255, 0, 0, 0));
darkColor.SetValue(Color::MakeARGB(255, 255, 255, 255));
}
Pen light(lightColor);
Pen dark(darkColor);
// The bevel is drawn outside the meter
Rect rect(x - 2, y - 2, m_W + 4, m_H + 4);
DrawBevel(graphics, rect, light, dark);
canvas.EndGdiplusContext();
}
return true;
}
/*
** Draws the meter on the double buffer
**
*/
bool MeterImage::Draw(Gfx::Canvas& canvas)
{
if (!Meter::Draw(canvas)) return false;
if (m_Image.IsLoaded())
{
// Copy the image over the doublebuffer
Bitmap* drawBitmap = m_Image.GetImage();
int imageW = drawBitmap->GetWidth();
int imageH = drawBitmap->GetHeight();
if (imageW == 0 || imageH == 0 || m_W == 0 || m_H == 0) return true;
int x = GetX();
int y = GetY();
int drawW = m_W;
int drawH = m_H;
if (drawW == imageW && drawH == imageH &&
m_ScaleMargins.left == 0 && m_ScaleMargins.top == 0 && m_ScaleMargins.right == 0 && m_ScaleMargins.bottom == 0)
{
canvas.DrawBitmap(drawBitmap, Rect(x, y, drawW, drawH), Rect(0, 0, imageW, imageH));
}
else if (m_DrawMode == DRAWMODE_TILE)
{
Gdiplus::Graphics& graphics = canvas.BeginGdiplusContext();
ImageAttributes imgAttr;
imgAttr.SetWrapMode(WrapModeTile);
Rect r(x, y, drawW, drawH);
graphics.DrawImage(drawBitmap, r, 0, 0, drawW, drawH, UnitPixel, &imgAttr);
canvas.EndGdiplusContext();
}
else if (m_DrawMode == DRAWMODE_KEEPRATIO || m_DrawMode == DRAWMODE_KEEPRATIOANDCROP)
{
int cropX = 0;
int cropY = 0;
int cropW = imageW;
int cropH = imageH;
if (m_WDefined && m_HDefined)
{
REAL imageRatio = imageW / (REAL)imageH;
REAL meterRatio = m_W / (REAL)m_H;
if (imageRatio != meterRatio)
{
if (m_DrawMode == DRAWMODE_KEEPRATIO)
{
if (imageRatio > meterRatio)
{
drawH = m_W * imageH / imageW;
y += (m_H - drawH) / 2;
}
else
{
drawW = m_H * imageW / imageH;
x += (m_W - drawW) / 2;
}
}
else
{
if (imageRatio > meterRatio)
{
cropW = (int)(imageH * meterRatio);
cropX = (imageW - cropW) / 2;
}
else
{
cropH = (int)(imageW / meterRatio);
cropY = (imageH - cropH) / 2;
}
}
}
}
Rect r(x, y, drawW, drawH);
canvas.DrawBitmap(drawBitmap, r, Rect(cropX, cropY, cropW, cropH));
}
else
{
const RECT& m = m_ScaleMargins;
if (m.top > 0)
{
if (m.left > 0)
{
// Top-Left
Rect r(x, y, m.left, m.top);
canvas.DrawBitmap(drawBitmap, r, Rect(0, 0, m.left, m.top));
}
// Top
Rect r(x + m.left, y, drawW - m.left - m.right, m.top);
canvas.DrawBitmap(drawBitmap, r, Rect(m.left, 0, imageW - m.left - m.right, m.top));
if (m.right > 0)
{
// Top-Right
Rect r(x + drawW - m.right, y, m.right, m.top);
canvas.DrawBitmap(drawBitmap, r, Rect(imageW - m.right, 0, m.right, m.top));
}
}
if (m.left > 0)
{
// Left
Rect r(x, y + m.top, m.left, drawH - m.top - m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(0, m.top, m.left, imageH - m.top - m.bottom));
}
// Center
Rect r(x + m.left, y + m.top, drawW - m.left - m.right, drawH - m.top - m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(m.left, m.top, imageW - m.left - m.right, imageH - m.top - m.bottom));
if (m.right > 0)
{
// Right
Rect r(x + drawW - m.right, y + m.top, m.right, drawH - m.top - m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(imageW - m.right, m.top, m.right, imageH - m.top - m.bottom));
}
if (m.bottom > 0)
{
if (m.left > 0)
{
// Bottom-Left
Rect r(x, y + drawH - m.bottom, m.left, m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(0, imageH - m.bottom, m.left, m.bottom));
}
// Bottom
Rect r(x + m.left, y + drawH - m.bottom, drawW - m.left - m.right, m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(m.left, imageH - m.bottom, imageW - m.left - m.right, m.bottom));
if (m.right > 0)
{
// Bottom-Right
Rect r(x + drawW - m.right, y + drawH - m.bottom, m.right, m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(imageW - m.right, imageH - m.bottom, m.right, m.bottom));
}
}
}
}
return true;
}
/*
** Draws the meter on the double buffer
**
*/
bool MeterHistogram::Draw(Gfx::Canvas& canvas)
{
if (!Meter::Draw(canvas) ||
(m_Measures.size() >= 1 && !m_PrimaryValues) ||
(m_Measures.size() >= 2 && !m_SecondaryValues)) return false;
Gdiplus::Graphics& graphics = canvas.BeginGdiplusContext();
Measure* secondaryMeasure = (m_Measures.size() >= 2) ? m_Measures[1] : nullptr;
GraphicsPath primaryPath;
GraphicsPath secondaryPath;
GraphicsPath bothPath;
Bitmap* primaryBitmap = m_PrimaryImage.GetImage();
Bitmap* secondaryBitmap = m_SecondaryImage.GetImage();
Bitmap* bothBitmap = m_OverlapImage.GetImage();
Gdiplus::Rect meterRect = GetMeterRectPadding();
// Default values (GraphStart=Right, GraphOrientation=Vertical)
int i;
int startValue = 0;
int* endValueLHS = &i;
int* endValueRHS = &meterRect.Width;
int step = 1;
int endValue = -1; //(should be 0, but need to simulate <=)
// GraphStart=Left, GraphOrientation=Vertical
if (!m_GraphHorizontalOrientation)
{
if (m_GraphStartLeft)
{
startValue = meterRect.Width - 1;
endValueLHS = &endValue;
endValueRHS = &i;
step = -1;
}
}
else
{
if (!m_Flip)
{
endValueRHS = &meterRect.Height;
}
else
{
startValue = meterRect.Height - 1;
endValueLHS = &endValue;
endValueRHS = &i;
step = -1;
}
}
// Horizontal or Vertical graph
if (m_GraphHorizontalOrientation)
{
for (i = startValue; *endValueLHS < *endValueRHS; i += step)
{
double value = (m_MaxPrimaryValue == 0.0) ?
0.0
: m_PrimaryValues[(i + (m_MeterPos % meterRect.Height)) % meterRect.Height] / m_MaxPrimaryValue;
value -= m_MinPrimaryValue;
int primaryBarHeight = (int)(meterRect.Width * value);
primaryBarHeight = min(meterRect.Width, primaryBarHeight);
primaryBarHeight = max(0, primaryBarHeight);
if (secondaryMeasure)
{
value = (m_MaxSecondaryValue == 0.0) ?
0.0
: m_SecondaryValues[(i + m_MeterPos) % meterRect.Height] / m_MaxSecondaryValue;
value -= m_MinSecondaryValue;
int secondaryBarHeight = (int)(meterRect.Width * value);
secondaryBarHeight = min(meterRect.Width, secondaryBarHeight);
secondaryBarHeight = max(0, secondaryBarHeight);
// Check which measured value is higher
int bothBarHeight = min(primaryBarHeight, secondaryBarHeight);
// Cache image/color rectangle for the both lines
{
Rect& r = m_GraphStartLeft ?
Rect(meterRect.X, meterRect.Y + startValue + (step * i), bothBarHeight, 1)
: Rect(meterRect.X + meterRect.Width - bothBarHeight, meterRect.Y + startValue + (step * i), bothBarHeight, 1);
bothPath.AddRectangle(r); // cache
}
// Cache the image/color rectangle for the rest
if (secondaryBarHeight > primaryBarHeight)
{
Rect& r = m_GraphStartLeft ?
Rect(meterRect.X + bothBarHeight, meterRect.Y + startValue + (step * i), secondaryBarHeight - bothBarHeight, 1)
: Rect(meterRect.X + meterRect.Width - secondaryBarHeight, meterRect.Y + startValue + (step * i), secondaryBarHeight - bothBarHeight, 1);
secondaryPath.AddRectangle(r); // cache
}
else
{
Rect& r = m_GraphStartLeft ?
Rect(meterRect.X + bothBarHeight, meterRect.Y + startValue + (step * i), primaryBarHeight - bothBarHeight, 1)
: Rect(meterRect.X + meterRect.Width - primaryBarHeight, meterRect.Y + startValue + (step * i), primaryBarHeight - bothBarHeight, 1);
primaryPath.AddRectangle(r); // cache
}
}
else
{
Rect& r = m_GraphStartLeft ?
Rect(meterRect.X, meterRect.Y + startValue + (step * i), primaryBarHeight, 1)
: Rect(meterRect.X + meterRect.Width - primaryBarHeight, meterRect.Y + startValue + (step * i), primaryBarHeight, 1);
primaryPath.AddRectangle(r); // cache
}
}
}
else // GraphOrientation=Vertical
{
for (i = startValue; *endValueLHS < *endValueRHS; i += step)
{
double value = (m_MaxPrimaryValue == 0.0) ?
0.0
: m_PrimaryValues[(i + m_MeterPos) % meterRect.Width] / m_MaxPrimaryValue;
value -= m_MinPrimaryValue;
int primaryBarHeight = (int)(meterRect.Height * value);
primaryBarHeight = min(meterRect.Height, primaryBarHeight);
primaryBarHeight = max(0, primaryBarHeight);
if (secondaryMeasure)
{
value = (m_MaxSecondaryValue == 0.0) ?
0.0
: m_SecondaryValues[(i + m_MeterPos) % meterRect.Width] / m_MaxSecondaryValue;
value -= m_MinSecondaryValue;
int secondaryBarHeight = (int)(meterRect.Height * value);
secondaryBarHeight = min(meterRect.Height, secondaryBarHeight);
secondaryBarHeight = max(0, secondaryBarHeight);
// Check which measured value is higher
int bothBarHeight = min(primaryBarHeight, secondaryBarHeight);
// Cache image/color rectangle for the both lines
{
Rect& r = m_Flip ?
Rect(meterRect.X + startValue + (step * i), meterRect.Y, 1, bothBarHeight)
: Rect(meterRect.X + startValue + (step * i), meterRect.Y + meterRect.Height - bothBarHeight, 1, bothBarHeight);
bothPath.AddRectangle(r); // cache
}
// Cache the image/color rectangle for the rest
if (secondaryBarHeight > primaryBarHeight)
{
Rect& r = m_Flip ?
Rect(meterRect.X + startValue + (step * i), meterRect.Y + bothBarHeight, 1, secondaryBarHeight - bothBarHeight)
: Rect(meterRect.X + startValue + (step * i), meterRect.Y + meterRect.Height - secondaryBarHeight, 1, secondaryBarHeight - bothBarHeight);
secondaryPath.AddRectangle(r); // cache
}
else
{
Rect& r = m_Flip ?
Rect(meterRect.X + startValue + (step * i), meterRect.Y + bothBarHeight, 1, primaryBarHeight - bothBarHeight)
: Rect(meterRect.X + startValue + (step * i), meterRect.Y + meterRect.Height - primaryBarHeight, 1, primaryBarHeight - bothBarHeight);
primaryPath.AddRectangle(r); // cache
}
}
else
{
Rect& r = m_Flip ?
Rect(meterRect.X + startValue + (step * i), meterRect.Y, 1, primaryBarHeight)
: Rect(meterRect.X + startValue + (step * i), meterRect.Y + meterRect.Height - primaryBarHeight, 1, primaryBarHeight);
primaryPath.AddRectangle(r); // cache
}
}
}
// Draw cached rectangles
if (primaryBitmap)
{
Rect r(meterRect.X, meterRect.Y, primaryBitmap->GetWidth(), primaryBitmap->GetHeight());
graphics.SetClip(&primaryPath);
graphics.DrawImage(primaryBitmap, r, 0, 0, r.Width, r.Height, UnitPixel);
graphics.ResetClip();
}
else
{
SolidBrush brush(m_PrimaryColor);
graphics.FillPath(&brush, &primaryPath);
}
if (secondaryMeasure)
{
if (secondaryBitmap)
{
Rect r(meterRect.X, meterRect.Y, secondaryBitmap->GetWidth(), secondaryBitmap->GetHeight());
graphics.SetClip(&secondaryPath);
graphics.DrawImage(secondaryBitmap, r, 0, 0, r.Width, r.Height, UnitPixel);
graphics.ResetClip();
}
else
{
SolidBrush brush(m_SecondaryColor);
graphics.FillPath(&brush, &secondaryPath);
}
if (bothBitmap)
{
Rect r(meterRect.X, meterRect.Y, bothBitmap->GetWidth(), bothBitmap->GetHeight());
graphics.SetClip(&bothPath);
graphics.DrawImage(bothBitmap, r, 0, 0, r.Width, r.Height, UnitPixel);
graphics.ResetClip();
}
else
{
SolidBrush brush(m_OverlapColor);
graphics.FillPath(&brush, &bothPath);
}
}
canvas.EndGdiplusContext();
return true;
}
/*
** Draws the meter on the double buffer
**
*/
bool MeterLine::Draw(Gfx::Canvas& canvas)
{
int maxSize = m_GraphHorizontalOrientation ? m_H : m_W;
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;
}
}
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;
}
/*
** Draws the meter on the double buffer
**
*/
bool MeterImage::Draw(Gfx::Canvas& canvas)
{
if (!Meter::Draw(canvas)) return false;
if (m_Image.IsLoaded())
{
// Copy the image over the doublebuffer
Bitmap* drawBitmap = m_Image.GetImage();
int imageW = drawBitmap->GetWidth();
int imageH = drawBitmap->GetHeight();
if (imageW == 0 || imageH == 0 || m_W == 0 || m_H == 0) return true;
Gdiplus::Rect meterRect = GetMeterRectPadding();
int drawW = meterRect.Width;
int drawH = meterRect.Height;
bool hasMask = (m_Skin->GetUseD2D() && m_MaskImage.IsLoaded());
if (hasMask)
{
Bitmap* maskBitmap = m_MaskImage.GetImage();
imageW = maskBitmap->GetWidth();
imageH = maskBitmap->GetHeight();
int imageMW = drawBitmap->GetWidth();
int imageMH = drawBitmap->GetHeight();
int cropX = 0;
int cropY = 0;
int cropW = imageMW;
int cropH = imageMH;
REAL imageratio = imageMW / (REAL)imageMH;
REAL meterRatio = meterRect.Width / (REAL)meterRect.Height;
if (imageratio != meterRatio)
{
if (imageratio > meterRatio)
{
cropW = (int)(imageMH * meterRatio);
cropX = (imageMW - cropW) / 2;
}
else
{
cropH = (int)(imageMW / meterRatio);
cropY = (imageMH - cropH) / 2;
}
}
canvas.DrawMaskedBitmap(drawBitmap, maskBitmap, meterRect, Rect(0, 0, imageW, imageH), Gdiplus::Rect(cropX, cropY, cropW, cropH));
}
else if (drawW == imageW && drawH == imageH &&
m_ScaleMargins.left == 0 && m_ScaleMargins.top == 0 && m_ScaleMargins.right == 0 && m_ScaleMargins.bottom == 0)
{
canvas.DrawBitmap(drawBitmap, Rect(meterRect.X, meterRect.Y, drawW, drawH), Rect(0, 0, imageW, imageH));
}
else if (m_DrawMode == DRAWMODE_TILE)
{
Gdiplus::Graphics& graphics = canvas.BeginGdiplusContext();
ImageAttributes imgAttr;
imgAttr.SetWrapMode(WrapModeTile);
Rect r(meterRect.X, meterRect.Y, drawW, drawH);
graphics.DrawImage(drawBitmap, r, 0, 0, drawW, drawH, UnitPixel, &imgAttr);
canvas.EndGdiplusContext();
}
else if (m_DrawMode == DRAWMODE_KEEPRATIO || m_DrawMode == DRAWMODE_KEEPRATIOANDCROP)
{
int cropX = 0;
int cropY = 0;
int cropW = imageW;
int cropH = imageH;
if (m_WDefined && m_HDefined)
{
REAL imageRatio = imageW / (REAL)imageH;
REAL meterRatio = meterRect.Width / (REAL)meterRect.Height;
if (imageRatio != meterRatio)
{
if (m_DrawMode == DRAWMODE_KEEPRATIO)
{
if (imageRatio > meterRatio)
{
drawH = meterRect.Width * imageH / imageW;
meterRect.Y += (meterRect.Height - drawH) / 2;
}
else
{
drawW = meterRect.Height * imageW / imageH;
meterRect.X += (meterRect.Width - drawW) / 2;
}
}
else
{
if (imageRatio > meterRatio)
{
cropW = (int)(imageH * meterRatio);
cropX = (imageW - cropW) / 2;
}
else
{
cropH = (int)(imageW / meterRatio);
cropY = (imageH - cropH) / 2;
}
}
}
}
Rect r(meterRect.X, meterRect.Y, drawW, drawH);
canvas.DrawBitmap(drawBitmap, r, Rect(cropX, cropY, cropW, cropH));
}
else
{
const RECT& m = m_ScaleMargins;
if (m.top > 0)
{
if (m.left > 0)
{
// Top-Left
Rect r(meterRect.X, meterRect.Y, m.left, m.top);
canvas.DrawBitmap(drawBitmap, r, Rect(0, 0, m.left, m.top));
}
// Top
Rect r(meterRect.X + m.left, meterRect.Y, drawW - m.left - m.right, m.top);
canvas.DrawBitmap(drawBitmap, r, Rect(m.left, 0, imageW - m.left - m.right, m.top));
if (m.right > 0)
{
// Top-Right
Rect r(meterRect.X + drawW - m.right, meterRect.Y, m.right, m.top);
canvas.DrawBitmap(drawBitmap, r, Rect(imageW - m.right, 0, m.right, m.top));
}
}
if (m.left > 0)
{
// Left
Rect r(meterRect.X, meterRect.Y + m.top, m.left, drawH - m.top - m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(0, m.top, m.left, imageH - m.top - m.bottom));
}
// Center
Rect r(meterRect.X + m.left, meterRect.Y + m.top, drawW - m.left - m.right, drawH - m.top - m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(m.left, m.top, imageW - m.left - m.right, imageH - m.top - m.bottom));
if (m.right > 0)
{
// Right
Rect r(meterRect.X + drawW - m.right, meterRect.Y + m.top, m.right, drawH - m.top - m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(imageW - m.right, m.top, m.right, imageH - m.top - m.bottom));
}
if (m.bottom > 0)
{
if (m.left > 0)
{
// Bottom-Left
Rect r(meterRect.X, meterRect.Y + drawH - m.bottom, m.left, m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(0, imageH - m.bottom, m.left, m.bottom));
}
// Bottom
Rect r(meterRect.X + m.left, meterRect.Y + drawH - m.bottom, drawW - m.left - m.right, m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(m.left, imageH - m.bottom, imageW - m.left - m.right, m.bottom));
if (m.right > 0)
{
// Bottom-Right
Rect r(meterRect.X + drawW - m.right, meterRect.Y + drawH - m.bottom, m.right, m.bottom);
canvas.DrawBitmap(drawBitmap, r, Rect(imageW - m.right, imageH - m.bottom, m.right, m.bottom));
}
}
}
}
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;
}
