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Scroll Area

A QScrollArea with shared scrollbars, focus styling and visibility controls.

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Live C++Source and licences
#include <QApplication>
#include <QFile>
#include <QHBoxLayout>
#include <QLabel>
#include <QPainter>
#include <QStandardItemModel>
#include <QUrl>
#include <QVBoxLayout>
#include <array>
#ifdef SHADCN_GALLERY_MEDIA
#include <shadcn/media.hpp>
#endif
#include <shadcn/shadcn.hpp>

QWidget* example(QWidget* parent = nullptr) {
    using namespace shadcn;
    auto* canvas = new QWidget(parent);
    canvas->setAutoFillBackground(true);
    auto* outer = new QHBoxLayout(canvas);
    outer->setContentsMargins(32, 32, 32, 32);
    auto* host = new QWidget(canvas);
    auto* layout = new QVBoxLayout(host);
    layout->setContentsMargins(0, 0, 0, 0);
    layout->setSpacing(16);
    outer->addStretch();
    outer->addWidget(host, 0, Qt::AlignCenter);
    outer->addStretch();
    auto* scroll = new ScrollArea(host);
    scroll->setFixedSize(280, 210);
    auto* contents = new QWidget;
    auto* rows = new QVBoxLayout(contents);
    rows->addWidget(new Label("Tags", contents));
    for (int i = 1; i <= 30; ++i) {
        rows->addWidget(new QLabel(QString("v1.2.0-beta.%1").arg(i), contents));
        rows->addWidget(new Separator(Qt::Horizontal, contents));
    }
    scroll->setWidget(contents);
    layout->addWidget(scroll);
    return canvas;
}

Installation​

add_subdirectory(shadcn-cpp)
target_link_libraries(app PRIVATE shadcn::widgets)

Usage​

#include <shadcn/navigation.hpp>
#include <QLabel>

shadcn::ScrollArea area(parent);
area.setWidgetResizable(true);
area.setWidget(new QLabel("Scrollable content", &area));
area.setHorizontalScrollBarVisible(false);

API​

ScrollArea inherits QScrollArea. Use the two visibility setters for horizontal and vertical bars.

Variations​

Keep horizontal scrolling for tables or code and disable it for ordinary reading content.

Keyboard and accessibility​

Qt supplies native focus, keyboard interaction and accessible object roles. Give the component a visible label or an accessible name when its text alone does not explain the action.

Ownership​

The parent widget owns the component. Child widgets created through a component layout follow Qt parent ownership. References returned by helper methods are borrowed.