Method applyContinuousStateToUi

YACReader/viewer.cpp:1386–1413

}

void Viewer::applyContinuousStateToUi()
{
    if (!continuousScroll) {
        return;
    }

    // Save/restore both guards: this can run re-entrantly (e.g. setActiveWidget's
    // setWidget triggers a viewport resize -> setViewportSize -> recompute -> here).
    // Unconditionally clearing them would defeat an outer block: setActiveWidget
    // blocks the scrollbar so setWidget's reset-to-0 won't fire onContinuousScroll;
    // if we unblock it here, that reset then snaps reading progress to the cover.
    const bool wasApplying = applyingContinuousModelState;
    applyingContinuousModelState = true;

    continuousWidget->setFixedHeight(continuousViewModel->totalHeight());
    continuousWidget->updateGeometry();

    auto *sb = verticalScrollBar();
    const int target = qBound(sb->minimum(), continuousViewModel->scrollY(), sb->maximum());
    const bool wasBlocked = sb->blockSignals(true);
    sb->setValue(target);
    sb->blockSignals(wasBlocked);

    applyingContinuousModelState = wasApplying;

    continuousWidget->update();
    viewport()->update();
}

void Viewer::scrollToCurrentContinuousPage()
{