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/*
SPDX-FileCopyrightText: 2012-2013 Evan Teran <evan.teran@gmail.com>
SPDX-FileCopyrightText: 2006 Michel Marti <mma@objectxp.com>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "kcalc_bitbutton.h"
#include <QEvent>
#include <QPainter>
//------------------------------------------------------------------------------
// Name: BitButton
// Desc: constructor
//------------------------------------------------------------------------------
BitButton::BitButton(QWidget *parent)
: QAbstractButton(parent)
{
// too many bits for tab focus
setFocusPolicy(Qt::ClickFocus);
setCheckable(true);
// size button by font
QSize size = fontMetrics().size(0, QStringLiteral("M"));
if (size.width() < size.height()) {
size.setHeight(size.width());
} else {
size.setWidth(size.height());
}
setMinimumSize(size);
setRenderSize(size);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
this->setAttribute(Qt::WA_Hover, true);
}
//------------------------------------------------------------------------------
// Name: paintEvent
// Desc: draws the button
//------------------------------------------------------------------------------
void BitButton::paintEvent(QPaintEvent *)
{
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing, true);
QPen pen(palette().highlight(), 2);
pen.setJoinStyle(Qt::MiterJoin);
painter.setPen(over_ ? pen : Qt::NoPen);
if (isDown()) {
painter.setBrush(palette().highlight());
} else {
painter.setBrush(on_ ? palette().text() : palette().base());
}
// Prepare button size (should be square)
QRect square = rect();
square.setSize(renderSize());
painter.translate(QPoint(0, (rect().height() - square.height()) / 2)); // center button
painter.drawRoundedRect(square, 3.0, 3.0);
pen.setColor(palette().color(isDown() ? QPalette::HighlightedText : (on_ ? QPalette::Window : QPalette::Text)));
painter.setPen(pen);
painter.drawText(square, Qt::AlignCenter, QString::number(on_ ? 1 : 0));
}
//------------------------------------------------------------------------------
// Name: isOn
// Desc: returns true if this bit-button is "on"
//------------------------------------------------------------------------------
bool BitButton::isOn() const
{
return on_;
}
//------------------------------------------------------------------------------
// Name: setOn
// Desc: changes the "on" value for the bitset
//------------------------------------------------------------------------------
void BitButton::setOn(bool value)
{
on_ = value;
update();
}
//------------------------------------------------------------------------------
// Name: renderSize
// Desc: returns current render size
//------------------------------------------------------------------------------
void BitButton::setRenderSize(const QSize &size)
{
if (size == renderSize_)
return;
renderSize_ = size;
// resize font for painting 0/1
auto actualFont = font();
actualFont.setPixelSize(qFloor(renderSize_.height() * 0.9));
setFont(actualFont);
}
//------------------------------------------------------------------------------
// Name: renderSize
// Desc: returns current render size
//------------------------------------------------------------------------------
QSize BitButton::renderSize() const
{
return renderSize_;
}
//------------------------------------------------------------------------------
// Name: enterEvent
// Desc: sets to true the "over" variable on Enter event
//------------------------------------------------------------------------------
void BitButton::enterEvent(QEnterEvent *event)
{
Q_UNUSED(event)
over_ = true;
update();
}
//------------------------------------------------------------------------------
// Name: leaveEvent
// Desc: sets to false the "over" variable on Leave event
//------------------------------------------------------------------------------
void BitButton::leaveEvent(QEvent *event)
{
if (event->type() == QEvent::Leave) {
over_ = false;
update();
}
}
//------------------------------------------------------------------------------
// Name: focusInEvent
// Desc: sets to true the "over" variable on Enter event
//------------------------------------------------------------------------------
void BitButton::focusInEvent(QFocusEvent *event)
{
Q_UNUSED(event)
over_ = true;
update();
}
//------------------------------------------------------------------------------
// Name: focusOutEvent
// Desc: sets to false the "over" variable on Leave event
//------------------------------------------------------------------------------
void BitButton::focusOutEvent(QFocusEvent *event)
{
Q_UNUSED(event)
over_ = false;
update();
}
#include "moc_kcalc_bitbutton.cpp"
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