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100 lines
3.1 KiB
100 lines
3.1 KiB
2 years ago
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#include "tools/cabana/util.h"
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#include <QFontDatabase>
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#include <QPainter>
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static QColor blend(QColor a, QColor b) {
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return QColor((a.red() + b.red()) / 2, (a.green() + b.green()) / 2, (a.blue() + b.blue()) / 2, (a.alpha() + b.alpha()) / 2);
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}
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const QVector<QColor> &HexColors::compute(const QByteArray &dat, double ts, uint32_t freq) {
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if (prev_dat.size() != dat.size()) {
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colors.resize(dat.size());
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last_change_t.resize(dat.size());
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std::fill(colors.begin(), colors.end(), QColor(0, 0, 0, 0));
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std::fill(last_change_t.begin(), last_change_t.end(), ts);
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} else {
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for (int i = 0; i < dat.size(); ++i) {
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const uint8_t last = prev_dat[i];
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const uint8_t cur = dat[i];
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if (last != cur) {
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double delta_t = ts - last_change_t[i];
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if (delta_t * freq > periodic_threshold) {
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// Last change was while ago, choose color based on delta up or down
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if (cur > last) {
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colors[i] = QColor(0, 187, 255, start_alpha); // Cyan
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} else {
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colors[i] = QColor(255, 0, 0, start_alpha); // Red
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}
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} else {
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// Periodic changes
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colors[i] = blend(colors[i], QColor(102, 86, 169, start_alpha / 2)); // Greyish/Blue
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}
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last_change_t[i] = ts;
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} else {
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// Fade out
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float alpha_delta = 1.0 / (freq + 1) / fade_time;
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colors[i].setAlphaF(std::max(0.0, colors[i].alphaF() - alpha_delta));
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}
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}
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}
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prev_dat = dat;
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return colors;
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}
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void HexColors::clear() {
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prev_dat.clear();
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last_change_t.clear();
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colors.clear();
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}
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QList<QVariant> HexColors::toVariantList(const QVector<QColor> &colors) {
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QList<QVariant> ret;
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ret.reserve(colors.size());
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for (auto &c : colors) ret.append(c);
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return ret;
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}
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// MessageBytesDelegate
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MessageBytesDelegate::MessageBytesDelegate(QObject *parent) : QStyledItemDelegate(parent) {
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fixed_font = QFontDatabase::systemFont(QFontDatabase::FixedFont);
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}
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void MessageBytesDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const {
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QList<QVariant> colors = index.data(Qt::UserRole).toList();
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if (colors.empty()) {
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QStyledItemDelegate::paint(painter, option, index);
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return;
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}
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QStyleOptionViewItemV4 opt = option;
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initStyleOption(&opt, index);
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if ((option.state & QStyle::State_Selected) && (option.state & QStyle::State_Active)) {
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painter->setPen(option.palette.color(QPalette::HighlightedText));
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} else {
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painter->setPen(option.palette.color(QPalette::Text));
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}
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painter->setFont(fixed_font);
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QRect space = painter->boundingRect(opt.rect, opt.displayAlignment, " ");
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QRect pos = painter->boundingRect(opt.rect, opt.displayAlignment, "00");
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pos.moveLeft(pos.x() + space.width());
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int m = space.width() / 2;
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const QMargins margins(m + 1, m, m, m);
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int i = 0;
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for (auto &byte : opt.text.split(" ")) {
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if (i < colors.size()) {
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painter->fillRect(pos.marginsAdded(margins), colors[i].value<QColor>());
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}
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painter->drawText(pos, opt.displayAlignment, byte);
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pos.moveLeft(pos.right() + space.width());
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i++;
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}
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}
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