Files
rdkit/Code/GraphMol/MolDraw2D/DrawTextJS.h
Greg Landrum 0b438197c7 Add MolDraw2DJS (#3376)
* backup, does not work

* backup

* baby steps

* basics are now working

* more progress

* add substructure highlighting

* get the FT stuff working too

* get the FT stuff working too

* empirical corrections to dashed bonds

* enable coordgen support

* change min font size

* support dashed lines

* some cleanup

* support all MolDraw2D options when parsing from JSON

* parse MolDraw2D options from JSON

* show stereogroup labels when they are present

* switch to using the new CIP labels in minilib

* update demo to show controlling options

* move all the JS code into jswrapper.cpp
pass the canvas itself instead of the id to the JS functions
introduce offset

* remove extra emscripten load

* cleanup debugging stuff

* update freetype tests

* update non-freetype tests

* changes in response to review
2020-08-31 17:09:16 -04:00

48 lines
1.3 KiB
C++

//
// @@ 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: Greg Landrum
//
// A concrete class derived from DrawText that uses the JS Canvas
// to draw text onto a picture.
// Requires emscripten
#ifndef RDKIT_DRAWTEXTJS_H
#define RDKIT_DRAWTEXTJS_H
#include <iosfwd>
#include <emscripten.h>
#include <emscripten/val.h>
#include <GraphMol/MolDraw2D/DrawText.h>
namespace RDKit {
// ****************************************************************************
class DrawTextJS : public DrawText {
public:
DrawTextJS(double max_fnt_sz, double min_fnt_sz, emscripten::val &context);
void drawChar(char c, const Point2D &cds) override;
private:
emscripten::val &context_;
// fills a vector of StringRects, one for each char in text, with
// super- and subscripts taken into account. Sizes in pixel coords,
// i.e. scaled by fontScale().
void getStringRects(const std::string &text,
std::vector<std::shared_ptr<StringRect>> &rects,
std::vector<TextDrawType> &draw_modes,
std::vector<char> &draw_chars) const override;
};
} // namespace RDKit
#endif // RDKIT_DRAWTEXTSVG_H