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//
// Copyright (C) 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).
//
#include <GraphMol/MolDraw2D/DrawTextNotFT.h>
#include <GraphMol/MolDraw2D/MolDraw2DHelpers.h>
namespace RDKit {
namespace MolDraw2D_detail {
// ****************************************************************************
DrawTextNotFT::DrawTextNotFT(double max_fnt_sz, double min_fnt_sz)
: DrawText(max_fnt_sz, min_fnt_sz) {}
// ****************************************************************************
DrawTextNotFT::~DrawTextNotFT() {}
// ****************************************************************************
void DrawTextNotFT::alignString(
TextAlignType talign, const std::vector<TextDrawType> &draw_modes,
std::vector<std::shared_ptr<StringRect>> &rects) const {
// std::string comes in with rects aligned with first char with its
// left hand and bottom edges at 0 on y and x respectively.
// Adjust relative to that so that the relative alignment point is at
// (0,0).
if (talign == TextAlignType::MIDDLE) {
size_t num_norm = count(draw_modes.begin(), draw_modes.end(),
TextDrawType::TextDrawNormal);
if (num_norm == 1) {
talign = TextAlignType::START;
}
}
Point2D align_trans, align_offset;
if (talign == TextAlignType::START || talign == TextAlignType::END) {
size_t align_char = 0;
for (size_t i = 0; i < rects.size(); ++i) {
if (draw_modes[i] == TextDrawType::TextDrawNormal) {
align_char = i;
if (talign == TextAlignType::START) {
break;
}
}
}
align_trans = rects[align_char]->trans_;
align_offset = rects[align_char]->offset_;
} else {
// centre on the middle of the Normal text. The super- or subscripts
// should be at the ends.
double x_min = std::numeric_limits<double>::max();
double x_max = std::numeric_limits<double>::lowest();
align_offset.x = align_offset.y = 0.0;
int num_norm = 0;
for (size_t i = 0; i < rects.size(); ++i) {
if (draw_modes[i] == TextDrawType::TextDrawNormal) {
Point2D tl, tr, br, bl;
rects[i]->calcCorners(tl, tr, br, bl, 0.0);
// sometimes the rect is in a coordinate frame where +ve y is down,
// sometimes it's up. For these purposes, we don't care so long as
// the y_max is larger than the y_min. We probably don't need to do
// all the tests for x_min and x_max;
x_min = std::min({bl.x, tr.x, x_min});
x_max = std::max({bl.x, tr.x, x_max});
align_offset += rects[i]->offset_;
++num_norm;
}
}
align_trans.x = (x_max - x_min) / 2.0;
align_trans.y = 0.0;
align_offset /= num_norm;
}
for (auto r : rects) {
r->trans_ -= align_trans;
r->offset_ = align_offset;
}
}
} // namespace MolDraw2D_detail
} // namespace RDKit
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