Files
Upsilon/apps/graph/values/function_title_cell.cpp
Émilie Feral 678fc5b437 [apps/graph/values] Enable function title cell to draw a derivative
function title

Change-Id: I20f207bb73bf1459029601fb5900fbbd12ec3b77
2016-10-24 10:37:17 +02:00

31 lines
1.1 KiB
C++

#include "function_title_cell.h"
#include "../function.h"
namespace Graph {
void FunctionTitleCell::setColor(KDColor color) {
m_functionColor = color;
}
void FunctionTitleCell::setDerivative(bool derivative) {
m_derivative = derivative;
}
void FunctionTitleCell::drawRect(KDContext * ctx, KDRect rect) const {
EvenOddCell::drawRect(ctx, rect);
// Write the "(x)"
KDColor background = backgroundColor();
KDSize textSize = KDText::stringSize("f");
KDPoint origin(0.5f*(m_frame.width() - textSize.width()), 0.5f*(m_frame.height() - textSize.height()));
if (m_derivative) {
ctx->drawString("'", origin.translatedBy(KDPoint(textSize.width(), 0)), m_functionColor , background);
ctx->drawString(Function::Parameter, origin.translatedBy(KDPoint(2*textSize.width(), 0)), m_functionColor , background);
} else {
ctx->drawString(Function::Parameter, origin.translatedBy(KDPoint(textSize.width(), 0)), m_functionColor , background);
}
// Color the color indicator
ctx->fillRect(KDRect(0, 0, bounds().width(), k_colorIndicatorThickness), m_functionColor);
}
}