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//
// @@ 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 (AstraZeneca)
// 19th June 2014
//
#include "MolDraw2DQt.h"
#ifdef RDK_BUILD_FREETYPE_SUPPORT
#include <GraphMol/MolDraw2D/DrawTextFTQt.h>
#else
#include <GraphMol/MolDraw2D/DrawTextQt.h>
#endif
#include <QPainter>
#include <QString>
using namespace boost;
using namespace std;
namespace RDKit {
// ****************************************************************************
MolDraw2DQt::MolDraw2DQt(int width, int height, QPainter &qp, int panelWidth,
int panelHeight, bool noFreetype)
: MolDraw2D(width, height, panelWidth, panelHeight), d_qp(qp) {
initDrawing();
initTextDrawer(noFreetype);
}
void MolDraw2DQt::initDrawing() {
d_qp.setRenderHint(QPainter::RenderHint::Antialiasing);
}
void MolDraw2DQt::initTextDrawer(bool noFreetype) {
double max_fnt_sz = drawOptions().maxFontSize;
double min_fnt_sz = drawOptions().minFontSize;
if (noFreetype) {
text_drawer_.reset(new DrawTextQt(max_fnt_sz, min_fnt_sz, d_qp));
} else {
#ifdef RDK_BUILD_FREETYPE_SUPPORT
try {
text_drawer_.reset(new DrawTextFTQt(max_fnt_sz, min_fnt_sz,
drawOptions().fontFile, d_qp));
} catch (std::runtime_error &e) {
BOOST_LOG(rdWarningLog)
<< e.what() << std::endl
<< "Falling back to native Qt text handling." << std::endl;
text_drawer_.reset(new DrawTextQt(max_fnt_sz, min_fnt_sz, d_qp));
}
#else
text_drawer_.reset(new DrawTextQt(max_fnt_sz, min_fnt_sz, d_qp));
#endif
}
}
// ****************************************************************************
void MolDraw2DQt::setColour(const DrawColour &col) {
MolDraw2D::setColour(col);
QColor this_col(int(255.0 * col.r), int(255.0 * col.g), int(255.0 * col.b),
int(255.0 * col.a));
QPen pen(this_col);
pen.setJoinStyle(Qt::RoundJoin);
d_qp.setPen(pen);
QBrush brush(this_col);
brush.setStyle(Qt::SolidPattern);
d_qp.setBrush(brush);
}
// ****************************************************************************
void MolDraw2DQt::drawLine(const Point2D &cds1, const Point2D &cds2) {
Point2D c1 = getDrawCoords(cds1);
Point2D c2 = getDrawCoords(cds2);
const DashPattern &dashes = dash();
QPen pen = d_qp.pen();
if (dashes.size()) {
QVector<qreal> dd;
for (unsigned int di = 0; di < dashes.size(); ++di) dd << dashes[di];
pen.setDashPattern(dd);
} else {
pen.setStyle(Qt::SolidLine);
}
pen.setWidth(lineWidth());
d_qp.setPen(pen);
d_qp.drawLine(QPointF(c1.x, c1.y), QPointF(c2.x, c2.y));
}
// ****************************************************************************
// draw the char, with the bottom left hand corner at cds
void MolDraw2DQt::drawChar(char c, const Point2D &cds) {
QRectF br = d_qp.boundingRect(0, 0, 100, 100, Qt::AlignLeft | Qt::AlignBottom,
QString(c));
d_qp.drawText(QRectF(cds.x, cds.y - br.height(), br.width(), br.height()),
Qt::AlignLeft | Qt::AlignBottom, QString(c), &br);
}
// ****************************************************************************
void MolDraw2DQt::drawPolygon(const vector<Point2D> &cds) {
PRECONDITION(cds.size() >= 3, "must have at least three points");
d_qp.save();
QBrush brush = d_qp.brush();
if (fillPolys())
brush.setStyle(Qt::SolidPattern);
else
brush.setStyle(Qt::NoBrush);
d_qp.setBrush(brush);
QPointF *points = new QPointF[cds.size()];
for (unsigned int i = 0; i < cds.size(); ++i) {
Point2D lc = getDrawCoords(cds[i]);
points[i] = QPointF(lc.x, lc.y);
}
d_qp.drawConvexPolygon(points, cds.size());
d_qp.restore();
delete[] points;
}
// ****************************************************************************
void MolDraw2DQt::clearDrawing() {
QColor this_col(int(255.0 * drawOptions().backgroundColour.r),
int(255.0 * drawOptions().backgroundColour.g),
int(255.0 * drawOptions().backgroundColour.b),
int(255.0 * drawOptions().backgroundColour.a));
d_qp.setBackground(QBrush(this_col));
d_qp.fillRect(offset().x, offset().y, width(), height(), this_col);
}
} // namespace RDKit
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