PlPlotUtil.cc
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/*
* PlPlotUtil.cc
*
* Created on: 22 apr. 2016
* Author: AKKA
*/
#include "PlPlotUtil.hh"
#include "plplot/plplot.h"
#include "plplot/plstream.h"
#include "plplot/plplotP.h"
namespace plot {
//Fraction of title character height
const float PlPlotUtil::LINE_SPACE_TITLE = 0.2;
const float PlPlotUtil::DEFAULT_CHARACTER_SIZE = 16.853;
/**
* @brief Set font to plPlot.
* @return
*/
void PlPlotUtil::setPlFont(const Font& font) {
plsfont(PlPlotUtil::getPlFontFamily(font),
PlPlotUtil::getPlFontStyle(font),
PlPlotUtil::getPlFontWeight(font));
plschr(getPlFontDef(font), PlPlotUtil::getPlFontScaleFactor(font));
}
double PlPlotUtil::getTextWidthInPlPage(Page* pPage, const char* text) {
// Get character default height and current (scaled) height in mm
PLFLT lDefaultCharHeight, lCurrentCharHeight;
plgchr(&lDefaultCharHeight, &lCurrentCharHeight);
PLFLT width;
width = plstrl(text) * lCurrentCharHeight / lDefaultCharHeight;
float pageWidth = std::get < 0 > (pPage->getSizeInMm()) * (pPage->_dpi / 90.);
return width / pageWidth;
}
/**
* @brief Calculate character height and width.
* @return Returns size of character where first element is width and second height.
*/
CharSize PlPlotUtil::getCharacterSizeInPlPage(Page* pPage) {
// Get character default height and current (scaled) height in mm
PLFLT lDefaultCharHeight, lCurrentCharHeight;
plgchr(&lDefaultCharHeight, &lCurrentCharHeight);
//Reference character is "M" (the larger one)
std::string mchar = "M";
PLFLT fontWidth;
// Computes the length of a string in mm, including escape sequences.
fontWidth = plstrl(mchar.c_str()) * lCurrentCharHeight / lDefaultCharHeight;
float pageWidth = std::get < 0 > (pPage->getSizeInMm()) * (pPage->_dpi / 90.);
float pageHeight = std::get < 1 > (pPage->getSizeInMm()) * (pPage->_dpi / 90.);
float lCharWidth, lCharHeight;
lCharWidth = fontWidth / pageWidth;
lCharHeight = lCurrentCharHeight / pageHeight;
CharSize lCharSize(lCharWidth, lCharHeight);
return lCharSize;
}
PLINT PlPlotUtil::getPlFontFamily(const Font& font) {
for (size_t i = 0; i < Font::sFamily.size(); ++i) {
if (Font::sFamily[i] == font.getName()) {
return i;
}
}
return 1; // sans-serif
}
PLFLT PlPlotUtil::getPlFontScaleFactor(const Font& font) {
return (float) font.getSize() / PlPlotUtil::DEFAULT_CHARACTER_SIZE;
}
PLFLT PlPlotUtil::getPlFontDef(const Font& /*font*/) {
return 0.0; // keep default font
}
PLINT PlPlotUtil::getPlFontStyle(const Font& font) {
std::ostringstream strStyle;
strStyle << font.getStyle();
for (size_t i = 0; i < Font::sStyle.size(); ++i) {
if (Font::sStyle[i] == strStyle.str()) {
return i;
}
}
return 0; // upright
}
PLINT PlPlotUtil::getPlFontWeight(const Font& font) {
std::ostringstream strWeight;
strWeight << font.getWeight();
for (size_t i = 0; i < Font::sWeight.size(); ++i) {
if (Font::sWeight[i] == strWeight.str()) {
return i;
}
}
return 0; // medium
}
}