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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "button.h"
#include "theme.h"
#include <QtGui>
#include <QGraphicsSceneMouseEvent>
static const int MinTextWidthAsChars = 8;
class ButtonPrivate {
Q_DECLARE_PUBLIC(Button)
public:
ButtonPrivate(Button *button)
: down(false)
, q_ptr(button)
{
textItem = new QGraphicsSimpleTextItem(q_ptr);
}
QGraphicsSimpleTextItem *textItem;
bool down;
Button *q_ptr;
};
Button::Button(const QString &text, QGraphicsItem *parent, QSizeF minimumSize)
: QGraphicsWidget(parent)
, d_ptr(new ButtonPrivate(this)), m_background(), m_selected(false)
{
Q_D(Button);
setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed);
//setCacheMode(QGraphicsItem::ItemCoordinateCache);
if(minimumSize.isValid())
setMinimumSize(minimumSize);
setContentsMargins(0, 0, 0, 0);
d->textItem->setText(text);
prepareGeometryChange();
m_font = Theme::p()->font(Theme::MenuItem);
d->textItem->setFont(m_font);
connect(Theme::p(), SIGNAL(themeChanged()), this, SLOT(themeChange()));
}
Button::~Button()
{
delete d_ptr;
}
bool Button::isDown()
{
Q_D(Button);
return d->down;
}
void Button::setText(const QString &text)
{
Q_D(Button);
d->textItem->setText(text);
update();
}
QString Button::text()
{
Q_D(Button);
return d->textItem->text();
}
void Button::paint(QPainter *painter,
const QStyleOptionGraphicsItem *option,
QWidget *widget)
{
Q_UNUSED(widget);
Q_UNUSED(option);
if(!m_background.isNull())
painter->drawPixmap(QPoint(), m_background);
if(m_selected) {
painter->setBrush(Qt::black);
painter->setOpacity(0.2);
painter->drawRect(boundingRect().toRect());
}
}
QSizeF Button::sizeHint(Qt::SizeHint which,
const QSizeF &constraint) const
{
Q_D(const Button);
switch (which)
{
case Qt::MinimumSize:
{
QFontMetricsF fm(d->textItem->font());
return QSizeF(MinTextWidthAsChars * fm.maxWidth(), fm.height());
}
case Qt::PreferredSize:
{
QFontMetricsF fm(d->textItem->font());
return QSizeF(fm.horizontalAdvance(d->textItem->text()), fm.height());
}
default:
return QGraphicsWidget::sizeHint(which, constraint);
}
}
void Button::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
Q_D(Button);
if (event->button() != Qt::LeftButton ||
!sceneBoundingRect().contains(event->scenePos()))
return;
d->down = true;
prepareGeometryChange();
emit pressed();
}
void Button::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
Q_D(Button);
if (!d->down || event->button() != Qt::LeftButton)
return;
d->down = false;
prepareGeometryChange();
emit released();
if (sceneBoundingRect().contains(event->scenePos()))
emit clicked();
}
void Button::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
Q_UNUSED(event);
}
void Button::resizeEvent(QGraphicsSceneResizeEvent *event)
{
Q_D(Button);
QGraphicsWidget::resizeEvent(event);
QRectF rect = d->textItem->boundingRect();
QRectF buttonrect = this->boundingRect();
d->textItem->setPos((buttonrect.width() - rect.width())/2, (buttonrect.height() - rect.height())/2 );
QSize currentSize = buttonrect.size().toSize();
if( m_background.size() != currentSize && (currentSize.width() > 0 && currentSize.height() > 0) ) {
m_background = Theme::p()->pixmap("status_field_middle.svg", buttonrect.size().toSize());
}
}
void Button::setBackground(QPixmap& background)
{
m_background = background;
}
void Button::themeChange()
{
Q_D(Button);
m_font = Theme::p()->font(Theme::MenuItem);
d->textItem->setFont(m_font);
}
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