629d6eda5c
Replace Nokia contact email address with Qt Project website. Change-Id: I431bbbf76d7c27d8b502f87947675c116994c415 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
300 lines
7.6 KiB
C++
300 lines
7.6 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
|
|
** All rights reserved.
|
|
** Contact: http://www.qt-project.org/
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:LGPL$
|
|
** GNU Lesser General Public License Usage
|
|
** This file may be used under the terms of the GNU Lesser General Public
|
|
** License version 2.1 as published by the Free Software Foundation and
|
|
** appearing in the file LICENSE.LGPL included in the packaging of this
|
|
** file. Please review the following information to ensure the GNU Lesser
|
|
** General Public License version 2.1 requirements will be met:
|
|
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
|
**
|
|
** In addition, as a special exception, Nokia gives you certain additional
|
|
** rights. These rights are described in the Nokia Qt LGPL Exception
|
|
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
|
**
|
|
** GNU General Public License Usage
|
|
** Alternatively, this file may be used under the terms of the GNU General
|
|
** Public License version 3.0 as published by the Free Software Foundation
|
|
** and appearing in the file LICENSE.GPL included in the packaging of this
|
|
** file. Please review the following information to ensure the GNU General
|
|
** Public License version 3.0 requirements will be met:
|
|
** http://www.gnu.org/copyleft/gpl.html.
|
|
**
|
|
** Other Usage
|
|
** Alternatively, this file may be used in accordance with the terms and
|
|
** conditions contained in a signed written agreement between you and Nokia.
|
|
**
|
|
**
|
|
**
|
|
**
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include <QGraphicsWidget>
|
|
#include <QPainter>
|
|
#include <QGraphicsSceneMouseEvent>
|
|
#include <QDebug>
|
|
|
|
#include "scrollbar.h"
|
|
#include "theme.h"
|
|
|
|
class ScrollBarPrivate {
|
|
Q_DECLARE_PUBLIC(ScrollBar)
|
|
|
|
public:
|
|
|
|
ScrollBarPrivate(Qt::Orientation orientation, ScrollBar *scrollBar)
|
|
: orientation(orientation)
|
|
, sliderPosition(0.0)
|
|
, sliderSize(0.0)
|
|
, sliderDown(false)
|
|
, q_ptr(scrollBar)
|
|
{
|
|
construct();
|
|
}
|
|
|
|
void themeChange()
|
|
{
|
|
construct();
|
|
updateSlider();
|
|
}
|
|
|
|
void construct()
|
|
{
|
|
scrollerPixmap = Theme::p()->pixmap("scroll.svg");
|
|
scrollBarPixmap = Theme::p()->pixmap("scrollbar.svg");
|
|
|
|
if (orientation == Qt::Horizontal) {
|
|
scrollerPixmap = scrollerPixmap.transformed(QTransform().rotate(90));
|
|
scrollBarPixmap = scrollBarPixmap.transformed(QTransform().rotate(90));
|
|
}
|
|
}
|
|
|
|
void setSliderPosition(qreal pos)
|
|
{
|
|
if (pos < 0.0)
|
|
pos = 0.0;
|
|
|
|
if (pos > sliderSize)
|
|
pos = sliderSize;
|
|
|
|
sliderPosition = pos;
|
|
|
|
if (!qFuzzyCompare(pos, sliderPosition))
|
|
updateSlider();
|
|
}
|
|
|
|
void updateSlider()
|
|
{
|
|
QRectF oldSlider = slider;
|
|
slider = q_func()->boundingRect();
|
|
|
|
qreal x = 0;
|
|
qreal y = 0;
|
|
qreal w = scrollerPixmap.width();
|
|
qreal h = scrollerPixmap.height();
|
|
|
|
//Adjust the scrollBar in relation to the scroller
|
|
|
|
if (orientation == Qt::Horizontal) {
|
|
qreal scrollBarHeight = scrollBarPixmap.height();
|
|
|
|
if (h > scrollBarHeight) {
|
|
slider.setTop((h - scrollBarHeight)/2.0);
|
|
slider.setHeight(scrollBarHeight);
|
|
}
|
|
} else {
|
|
qreal scrollBarWidth = scrollBarPixmap.width();
|
|
|
|
if (w > scrollBarWidth) {
|
|
slider.setLeft((w - scrollBarWidth)/2.0);
|
|
}
|
|
slider.setWidth(scrollBarWidth);
|
|
}
|
|
|
|
if(oldSlider != slider && (slider.size().width() > 0 &&slider.size().height() > 0 )) {
|
|
scrollBarPixmap = Theme::p()->pixmap("scrollbar.svg", slider.size().toSize());
|
|
}
|
|
cursor = QRectF(x, y, w, h);
|
|
|
|
if (orientation == Qt::Horizontal) {
|
|
qreal dx = qreal(int(sliderPosition)) * (slider.width() - cursor.width()) / sliderSize;
|
|
cursor.translate(dx, 0.0);
|
|
} else {
|
|
qreal dy = qreal(int(sliderPosition)) * (slider.height() - cursor.height()) / sliderSize;
|
|
cursor.translate(0.0, dy);
|
|
}
|
|
}
|
|
|
|
Qt::Orientation orientation;
|
|
qreal sliderPosition;
|
|
qreal sliderSize;
|
|
|
|
QPointF pressPos;
|
|
bool sliderDown;
|
|
|
|
QRectF slider;
|
|
QRectF cursor;
|
|
QPixmap scrollerPixmap;
|
|
QPixmap scrollBarPixmap;
|
|
|
|
ScrollBar *q_ptr;
|
|
};
|
|
|
|
ScrollBar::ScrollBar(Qt::Orientation orientation, QGraphicsWidget *parent)
|
|
: QGraphicsWidget(parent)
|
|
, d_ptr(new ScrollBarPrivate(orientation, this))
|
|
{
|
|
setSizePolicy(QSizePolicy::Fixed, QSizePolicy::MinimumExpanding);
|
|
setContentsMargins(0, 0, 0, 0);
|
|
|
|
connect(Theme::p(), SIGNAL(themeChanged()), this, SLOT(themeChange()));
|
|
}
|
|
|
|
ScrollBar::~ScrollBar()
|
|
{
|
|
delete d_ptr;
|
|
}
|
|
|
|
qreal ScrollBar::sliderSize() const
|
|
{
|
|
Q_D(const ScrollBar);
|
|
return d->sliderSize;
|
|
}
|
|
|
|
void ScrollBar::setSliderSize(const qreal s)
|
|
{
|
|
Q_D(ScrollBar);
|
|
d->sliderSize = s;
|
|
}
|
|
|
|
void ScrollBar::setSliderPosition(qreal pos)
|
|
{
|
|
Q_D(ScrollBar);
|
|
|
|
d->setSliderPosition(pos);
|
|
prepareGeometryChange();
|
|
emit sliderPositionChange(d->sliderPosition);
|
|
}
|
|
|
|
qreal ScrollBar::sliderPosition() const
|
|
{
|
|
Q_D(const ScrollBar);
|
|
return d->sliderPosition;
|
|
}
|
|
|
|
bool ScrollBar::sliderDown() const
|
|
{
|
|
Q_D(const ScrollBar);
|
|
return d->sliderDown;
|
|
}
|
|
|
|
void ScrollBar::paint(QPainter *painter,
|
|
const QStyleOptionGraphicsItem *option,
|
|
QWidget *widget)
|
|
{
|
|
Q_D(ScrollBar);
|
|
Q_UNUSED(widget);
|
|
Q_UNUSED(option);
|
|
|
|
d->updateSlider();
|
|
|
|
QRect sliderRect = d->slider.toRect();
|
|
painter->drawPixmap(sliderRect.topLeft(), d->scrollBarPixmap);
|
|
|
|
QRect cursorRect = d->cursor.toRect();
|
|
painter->drawPixmap(cursorRect.topLeft(), d->scrollerPixmap);
|
|
}
|
|
|
|
QSizeF ScrollBar::sizeHint(Qt::SizeHint which,
|
|
const QSizeF &constraint) const
|
|
{
|
|
Q_D(const ScrollBar);
|
|
|
|
QSizeF s;
|
|
|
|
if (d->orientation == Qt::Horizontal)
|
|
s = QSizeF(-1, qMax(d->scrollBarPixmap.height(), d->scrollerPixmap.height()));
|
|
else
|
|
s = QSizeF(qMax(d->scrollBarPixmap.width(), d->scrollerPixmap.width()), -1);
|
|
|
|
switch (which)
|
|
{
|
|
case Qt::MinimumSize:
|
|
return s;
|
|
|
|
case Qt::MaximumSize:
|
|
return s;
|
|
|
|
default:
|
|
return QGraphicsWidget::sizeHint(which, constraint);
|
|
}
|
|
}
|
|
|
|
void ScrollBar::mousePressEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
Q_D(ScrollBar);
|
|
|
|
d->updateSlider();
|
|
|
|
if (d->cursor.contains(event->pos())) {
|
|
d->sliderDown = true;
|
|
d->pressPos = event->pos();
|
|
emit sliderPressed();
|
|
}
|
|
}
|
|
|
|
void ScrollBar::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
Q_D(ScrollBar);
|
|
Q_UNUSED(event);
|
|
|
|
d->sliderDown = false;
|
|
}
|
|
|
|
void ScrollBar::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
Q_D(ScrollBar);
|
|
|
|
if (!d->sliderDown)
|
|
return;
|
|
|
|
if (d->orientation == Qt::Horizontal) {
|
|
qreal f = (event->pos().x() - d->pressPos.x())/(d->slider.width() - d->cursor.width());
|
|
qreal dx = f * d->sliderSize;
|
|
|
|
d->setSliderPosition(d->sliderPosition + dx);
|
|
} else {
|
|
qreal f = (event->pos().y() - d->pressPos.y())/(d->slider.height() - d->cursor.height());
|
|
qreal dy = f * d->sliderSize;
|
|
|
|
d->setSliderPosition(d->sliderPosition + dy);
|
|
}
|
|
|
|
d->pressPos = event->pos();
|
|
|
|
prepareGeometryChange();
|
|
emit sliderPositionChange(d->sliderPosition);
|
|
}
|
|
|
|
void ScrollBar::resizeEvent(QGraphicsSceneResizeEvent *event)
|
|
{
|
|
QGraphicsWidget::resizeEvent(event);
|
|
}
|
|
|
|
void ScrollBar::themeChange()
|
|
{
|
|
Q_D(ScrollBar);
|
|
d->themeChange();
|
|
}
|
|
|