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//
// Copyright (C) 2021-2022 David Cosgrove and other RDKit contributors
//
// @@ All Rights Reserved @@
// This file is part of the RDKit.
// The contents are covered by the terms of the BSD license
// which is included in the file license.txt, found at the root
// of the RDKit source tree.
//
// Original author: David Cosgrove (CozChemIx Limited)
//
// This class is a helper class used by MolDraw2D to draw an ROMol.
// It is not part of the public API and is not intended to be used except
// by MolDraw2D.
// It holds the information needed to draw an atom symbol, including
// all the extra bits like isotope labels.
#ifndef RDKIT_ATOMSYMBOL_H
#define RDKIT_ATOMSYMBOL_H
#include <string>
#include <GraphMol/MolDraw2D/DrawText.h>
#include <GraphMol/MolDraw2D/MolDraw2DHelpers.h>
namespace RDKit {
class MolDraw2D;
namespace MolDraw2D_detail {
class AtomSymbol {
public:
virtual ~AtomSymbol() = default;
/*!
*
* @param symbol : the full symbol
* @param orient : text orientation (up, down, left, right)
* @param textDrawer : instance of DrawText to get the character sizes
* etc.
*/
AtomSymbol(const std::string &symbol, int atIdx, OrientType orient,
const Point2D &cds, const DrawColour &colour,
DrawText &textDrawer);
AtomSymbol(const AtomSymbol &) = delete;
AtomSymbol(AtomSymbol &&) = delete;
AtomSymbol &operator=(const AtomSymbol &) = delete;
AtomSymbol &operator=(AtomSymbol &&) = delete;
std::string symbol_;
int atIdx_;
OrientType orient_;
Point2D cds_;
DrawColour colour_;
DrawText &textDrawer_;
std::vector<std::shared_ptr<StringRect>> rects_;
std::vector<TextDrawType> drawModes_;
std::vector<char> drawChars_;
// expects xmin etc to be initialised to something sensible.
virtual void findExtremes(double &xmin, double &xmax, double &ymin,
double &ymax) const;
// scaleFactor moves the cds_, but the fontScaleFactor changes rects_, because
// we might be scaling the font differently from the drawing as a whole.
virtual void scale(const Point2D &scaleFactor);
virtual void move(const Point2D &trans);
void draw(MolDraw2D &molDrawer) const;
bool doesRectClash(const StringRect &rect, double padding) const;
// Because a colon is a lot shorter than other characters, there are cases,
// such as rxn_test1_2 in rxn_test1.cpp, where a vertical bond can slip
// between the atom symbol and the atom map (C:8 in that case) which looks
// a bit pants. This stretches the colon to be the same height as the
// smaller of the chars on either side.
void adjustColons();
// this is for debugging almost always.
void drawRects(MolDraw2D &molDrawer) const;
};
} // namespace MolDraw2D_detail
} // namespace RDKit
#endif // RDKIT_ATOMSYMBOL_H
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