RDKit
Open-source cheminformatics and machine learning.
DrawTextCairo.h
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1 //
2 // Copyright (C) 2020-2022 David Cosgrove and other RDKit contributors
3 //
4 // @@ All Rights Reserved @@
5 // This file is part of the RDKit.
6 // The contents are covered by the terms of the BSD license
7 // which is included in the file license.txt, found at the root
8 // of the RDKit source tree.
9 //
10 // Original author: David Cosgrove (CozChemIx).
11 //
12 // A concrete class derived from DrawText that uses the Cairo
13 // toy API to draw text onto a surface.
14 
15 #ifndef RDKIT_DRAWTEXTCAIRO_H
16 #define RDKIT_DRAWTEXTCAIRO_H
17 
18 #include <cairo.h>
19 
21 
22 namespace RDKit {
23 
24 class MolDraw2DCairo;
25 namespace MolDraw2D_detail {
26 
27 // ****************************************************************************
28 class DrawTextCairo : public DrawTextNotFT {
29 
30  public:
31  DrawTextCairo(double max_fnt_sz, double min_fnt_sz, cairo_t *dp_cr);
32  DrawTextCairo(const DrawTextCairo &) = delete;
36  void drawChar(char c, const Point2D &cds) override;
37  void setCairoContext(cairo_t *cr);
38 
39  private:
40  cairo_t *dp_cr_;
41 
42  // return a vector of StringRects, one for each char in text, with
43  // super- and subscripts taken into account. Sizes in pixel coords,
44  // i.e. scaled by fontScale().
45  void getStringRects(const std::string &text,
46  std::vector<std::shared_ptr<StringRect>> &rects,
47  std::vector<TextDrawType> &draw_modes,
48  std::vector<char> &draw_chars) const override;
49 };
50 
51 } // namespace MolDraw2D_detail
52 } // namespace RDKit
53 
54 #endif // RDKIT_DRAWTEXTCAIRO_H
DrawTextCairo & operator=(const DrawTextCairo &)=delete
DrawTextCairo(const DrawTextCairo &)=delete
DrawTextCairo & operator=(DrawTextCairo &&)=delete
DrawTextCairo(DrawTextCairo &&)=delete
DrawTextCairo(double max_fnt_sz, double min_fnt_sz, cairo_t *dp_cr)
void drawChar(char c, const Point2D &cds) override
Std stuff.
Definition: Abbreviations.h:19