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add support for kinetic scrolling

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svn path=/trunk/KDE/kdelibs/; revision=1030944
This commit is contained in:
Igor Trindade Oliveira 2009-10-03 15:06:41 +00:00
parent 17b6cf0974
commit a7ac1feaf2
2 changed files with 130 additions and 39 deletions
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138
widgets/webview.cpp
View File

@ -37,10 +37,12 @@
#include "plasma/widgets/webview.h"
#include "plasma/private/kineticscroll_p.h"
namespace Plasma
{
class WebViewPrivate
class WebViewPrivate : public KineticScrolling
{
public:
WebViewPrivate(WebView *parent)
@ -72,6 +74,7 @@ WebView::WebView(QGraphicsItem *parent)
{
d->page = 0;
d->loaded = false;
d->setWidget(this);
setAcceptsHoverEvents(true);
setFlags(QGraphicsItem::ItemIsFocusable);
@ -131,6 +134,76 @@ QRectF WebView::geometry() const
return QGraphicsWidget::geometry();
}
qreal WebView::horizontalScrollValue() const
{
if (!d->page) {
return 0;
}
const qreal value = d->page->mainFrame()->contentsSize().width() -
d->page->mainFrame()->geometry().width();
if(!value)
return 0;
return ((d->page->mainFrame()->geometry().x()*100)/value);
}
void WebView::setHorizontalScrollValue(qreal value)
{
if (!d->page) {
return;
}
qreal xValue = value * (d->page->mainFrame()->contentsSize().width() -
d->page->mainFrame()->geometry().width())/100;
if (!xValue)
xValue = 0;
d->page->mainFrame()->setScrollBarValue(Qt::Horizontal, xValue);
}
qreal WebView::verticalScrollValue() const
{
if (!d->page) {
return 0;
}
const qreal value = d->page->mainFrame()->contentsSize().height() -
d->page->mainFrame()->geometry().height();
if (!value)
return 0;
return ((d->page->mainFrame()->scrollPosition().y()*100)/value);
}
void WebView::setVerticalScrollValue(qreal value)
{
if (!d->page) {
return;
}
qreal yValue = value *
(d->page->mainFrame()->contentsSize().height() -
d->page->mainFrame()->geometry().height())/100;
if (!yValue)
yValue = 0;
const QPoint point(d->page->mainFrame()->scrollPosition().x(), yValue);
d->page->mainFrame()->setScrollPosition(point);
}
QRectF WebView::viewport() const
{
return QRectF(d->page->mainFrame()->geometry());
}
void WebView::setPage(QWebPage *page)
{
if (page == d->page) {
@ -196,21 +269,16 @@ void WebView::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
return;
}
if (d->dragToScroll && d->dragTimeout) {
QPointF deltaPos = event->pos() - event->lastPos();
d->page->mainFrame()->setScrollBarValue(Qt::Horizontal, d->page->mainFrame()->scrollBarValue(Qt::Horizontal) - deltaPos.x());
d->page->mainFrame()->setScrollBarValue(Qt::Vertical, d->page->mainFrame()->scrollBarValue(Qt::Vertical) - deltaPos.y());
d->dragging = true;
} else {
if (d->dragTimeoutTimer) {
d->dragTimeoutTimer->stop();
}
QMouseEvent me(QEvent::MouseMove, event->pos().toPoint(), event->button(),
event->buttons(), event->modifiers());
d->page->event(&me);
if (me.isAccepted()) {
event->accept();
}
if (event->pos().x() <= (d->page->mainFrame()->contentsSize().width() -
d->page->mainFrame()->scrollBarMaximum(Qt::Horizontal)))
d->mouseMoveEvent(event);
QMouseEvent me(QEvent::MouseMove, event->pos().toPoint(), event->button(),
event->buttons(), event->modifiers());
d->page->event(&me);
if (me.isAccepted()) {
event->accept();
}
}
@ -235,21 +303,14 @@ void WebView::mousePressEvent(QGraphicsSceneMouseEvent *event)
return;
}
d->dragTimeout = false;
if (!d->dragTimeoutTimer) {
d->dragTimeoutTimer = new QTimer(this);
d->dragTimeoutTimer->setSingleShot(true);
connect(d->dragTimeoutTimer, SIGNAL(timeout()), this, SLOT(dragTimeoutExpired()));
}
d->dragTimeoutTimer->start(250);
setFocus();
QMouseEvent me(QEvent::MouseButtonPress, event->pos().toPoint(), event->button(),
event->buttons(), event->modifiers());
QMouseEvent me(QEvent::MouseButtonPress, event->pos().toPoint(),
event->button(), event->buttons(), event->modifiers());
d->page->event(&me);
if (me.isAccepted()) {
event->accept();
d->mousePressEvent(event);
}
}
@ -260,8 +321,8 @@ void WebView::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
return;
}
QMouseEvent me(QEvent::MouseButtonDblClick, event->pos().toPoint(), event->button(),
event->buttons(), event->modifiers());
QMouseEvent me(QEvent::MouseButtonDblClick, event->pos().toPoint(),
event->button(), event->buttons(), event->modifiers());
d->page->event(&me);
if (me.isAccepted()) {
event->accept();
@ -270,15 +331,18 @@ void WebView::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
void WebView::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
if (!d->page || d->dragging) {
d->dragging = false;
if (!d->page) {
QGraphicsWidget::mouseReleaseEvent(event);
return;
}
QMouseEvent me(QEvent::MouseButtonRelease, event->pos().toPoint(), event->button(),
event->buttons(), event->modifiers());
event->accept();
d->mouseReleaseEvent(event);
QMouseEvent me(QEvent::MouseButtonRelease, event->pos().toPoint(),
event->button(),event->buttons(), event->modifiers());
d->page->event(&me);
if (me.isAccepted()) {
event->accept();
}
@ -314,15 +378,11 @@ void WebView::wheelEvent(QGraphicsSceneWheelEvent *event)
}
QWheelEvent we(event->pos().toPoint(), event->delta(), event->buttons(),
event->modifiers(), event->orientation());
event->modifiers(), event->orientation());
d->page->event(&we);
if (we.isAccepted()) {
event->accept();
} else {
QGraphicsWidget::wheelEvent(event);
}
event->accept();
d->wheelReleaseEvent(event);
}
void WebView::keyPressEvent(QKeyEvent * event)

31
widgets/webview.h
View File

@ -50,6 +50,9 @@ class PLASMA_EXPORT WebView : public QGraphicsWidget
Q_PROPERTY(KUrl url READ url WRITE setUrl)
Q_PROPERTY(QString html READ html WRITE setHtml)
Q_PROPERTY(bool dragToScroll READ dragToScroll WRITE setDragToScroll)
Q_PROPERTY(int horizontalScrollValue READ horizontalScrollValue WRITE setHorizontalScrollValue)
Q_PROPERTY(int verticalScrollValue READ verticalScrollValue WRITE setVerticalScrollValue)
Q_PROPERTY(QRectF viewport READ viewport)
public:
explicit WebView(QGraphicsItem *parent = 0);
@ -94,7 +97,35 @@ class PLASMA_EXPORT WebView : public QGraphicsWidget
* Reimplementation
*/
QRectF geometry() const;
/**
* The horizontal scroll value, between 0 and 100
* @since 4.4
*/
qreal horizontalScrollValue() const;
/**
* Set the horizontal scroll value, between 0 and 100
* @since 4.4
*/
void setHorizontalScrollValue(qreal value);
/**
* The horizontal scroll value, between 0 and 100
* @since 4.4
*/
qreal verticalScrollValue() const;
/**
* Set the horizontal scroll value, between 0 and 100
* @since 4.4
*/
void setVerticalScrollValue(qreal value);
/**
* The scrollable widget size.
* @since 4.4
*/
QRectF viewport() const;
/**
* Sets the page to use in this item. The owner of the webpage remains,
* however if this WebView object is the owner of the current page,