Method showEvent

pj_widgets/src/MessageBox.cpp:242–289

}

void MessageBox::showEvent(QShowEvent* event) {
  QDialog::showEvent(event);

  const bool first_show = !size_finalized_;
  size_finalized_ = true;

  // (1) Grow to fit the word-wrapped BODY on first show. Widths are resolved by
  // now (the dialog was sized to its hint and laid out before this event), so the
  // body's real wrap width is known. heightForWidth does not feed sizeHint and
  // the styled card breaks its propagation, so the dialog can open a single line
  // tall and clip a multi-line body — re-measure at the resolved width and grow.
  if (first_show) {
    const int label_w = body_label_->width();
    if (label_w > 0) {
      const int needed = body_label_->heightForWidth(label_w);
      const int extra = needed - body_label_->height();
      if (extra > 0) {
        body_label_->setMinimumHeight(needed);  // hard floor: the wrapped text never clips
        resize(width(), height() + extra);
      }
    }
  }

  // (2) Pin the dialog to the exact height its content needs at the shown width
  // so the QVBoxLayout never compresses the inter-button spacings. Otherwise the
  // layout steals the wrapped-body height deficit from the most compressible
  // items — the gaps between stacked buttons — and they shrink by a different
  // amount per dialog. Runs after (1) so the grown body minimum height is
  // already reflected in the layout's heightForWidth (6 px between buttons,
  // 14 px elsewhere).
  if (layout() != nullptr && layout()->hasHeightForWidth()) {
    const int needed = layout()->heightForWidth(width());
    if (needed > 0 && needed != height()) {
      resize(width(), needed);
    }
  }

  // exec() centered us at the pre-grow size; re-center on first show after any
  // growth so the dialog stays balanced relative to its parent window. Guarded by
  // first_show so a later re-show (which still runs the spacing fix) does not
  // move a dialog the user may have positioned.
  if (first_show) {
    if (const QWidget* anchor = parentWidget() != nullptr ? parentWidget()->window() : nullptr) {
      const QRect parent_geom = anchor->geometry();
      move(parent_geom.center().x() - (width() / 2), parent_geom.center().y() - (height() / 2));
    }
  }
}

void MessageBox::rewrapButtonLabels() {
  // Widest a single button line may be before the dialog would exceed its