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54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
//
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// Copyright (C) 2020-2022 David Cosgrove and other RDKit contributors
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//
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// @@ All Rights Reserved @@
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// This file is part of the RDKit.
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// The contents are covered by the terms of the BSD license
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// which is included in the file license.txt, found at the root
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// of the RDKit source tree.
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//
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// Original author: David Cosgrove (CozChemIx).
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//
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// A concrete class derived from DrawText that uses the Cairo
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// toy API to draw text onto a surface.
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#ifndef RDKIT_DRAWTEXTCAIRO_H
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#define RDKIT_DRAWTEXTCAIRO_H
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#include <cairo.h>
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#include <GraphMol/MolDraw2D/DrawTextNotFT.h>
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namespace RDKit {
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class MolDraw2DCairo;
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namespace MolDraw2D_detail {
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// ****************************************************************************
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class DrawTextCairo : public DrawTextNotFT {
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public:
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DrawTextCairo(double max_fnt_sz, double min_fnt_sz, cairo_t *dp_cr);
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DrawTextCairo(const DrawTextCairo &) = delete;
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DrawTextCairo(DrawTextCairo &&) = delete;
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DrawTextCairo &operator=(const DrawTextCairo &) = delete;
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DrawTextCairo &operator=(DrawTextCairo &&) = delete;
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void drawChar(char c, const Point2D &cds) override;
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void setCairoContext(cairo_t *cr);
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private:
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cairo_t *dp_cr_;
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// return a vector of StringRects, one for each char in text, with
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// super- and subscripts taken into account. Sizes in pixel coords,
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// i.e. scaled by fontScale().
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void getStringRects(const std::string &text,
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std::vector<std::shared_ptr<StringRect>> &rects,
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std::vector<TextDrawType> &draw_modes,
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std::vector<char> &draw_chars) const override;
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};
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} // namespace MolDraw2D_detail
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} // namespace RDKit
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#endif // RDKIT_DRAWTEXTCAIRO_H
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