transmission/qt/IconToolButton.cc

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// This file Copyright © Mnemosyne LLC.
// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.
#include <QStyle>
#include <QStyleOption>
#include <QStyleOptionToolButton>
#include <QStylePainter>
#include "IconToolButton.h"
IconToolButton::IconToolButton(QWidget* parent)
: QToolButton(parent)
{
}
QSize IconToolButton::sizeHint() const
{
auto option = QStyleOptionToolButton{};
initStyleOption(&option);
option.features = QStyleOptionToolButton::None;
option.toolButtonStyle = Qt::ToolButtonIconOnly;
QSize const size = style()->sizeFromContents(QStyle::CT_ToolButton, &option, iconSize(), this);
return size.expandedTo(iconSize() + QSize{ 4, 4 });
}
void IconToolButton::paintEvent(QPaintEvent* /*event*/)
{
auto painter = QStylePainter{ this };
auto option = QStyleOptionToolButton{};
initStyleOption(&option);
option.features = QStyleOptionToolButton::None;
option.toolButtonStyle = Qt::ToolButtonIconOnly;
painter.drawComplexControl(QStyle::CC_ToolButton, option);
}