| 35 | } |
| 36 | |
| 37 | void VisualizerDisplayWidget::paintEvent(QPaintEvent*) { |
| 38 | if (!guiEmuValid) { |
| 39 | return; |
| 40 | } |
| 41 | |
| 42 | QPainter c(this); |
| 43 | const QRect& cw = c.window(); |
| 44 | |
| 45 | c.setRenderHint(QPainter::SmoothPixmapTransform, cw.width() < m_width); |
| 46 | if (m_image != Q_NULLPTR) { |
| 47 | c.drawImage(cw, *m_image); |
| 48 | |
| 49 | // only draw grid if width/height scale >= 200% |
| 50 | if (m_grid && (cw.width() >= (m_width * 2) && cw.height() >= (m_height * 2))) { |
| 51 | QVarLengthArray<QLineF, 100> lines; |
| 52 | |
| 53 | for (qreal x = cw.left(); x < cw.right(); x += (cw.width() / m_width)) { |
| 54 | lines.append(QLineF(x, cw.top(), x, cw.bottom())); |
| 55 | } |
| 56 | for (qreal y = cw.top(); y < cw.bottom(); y += (cw.height() / m_height)) { |
| 57 | lines.append(QLineF(cw.left(), y, cw.right(), y)); |
| 58 | } |
| 59 | |
| 60 | c.drawLines(lines.data(), lines.size()); |
| 61 | } |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | void VisualizerDisplayWidget::mousePressEvent(QMouseEvent *e) { |
| 66 | if (e->button() == Qt::LeftButton) { |