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#include "webview.h"
#include <QMouseEvent>
#include <QWebFrame>
#include <QWebHitTestResult>
#include <QWebElement>
#include <QLinearGradient>
#include <QDebug>
WebView::WebView(QGraphicsItem * parent)
: QGraphicsWebView(parent)
, m_scrapRect(QRect())
, m_scrapSelected(false)
{
setAcceptHoverEvents(true);
}
void WebView::hoverMoveEvent(QGraphicsSceneHoverEvent* event)
{
if (m_scrapSelected) {
QGraphicsWebView::hoverMoveEvent(event);
return;
}
QWebFrame* mainFrame = page()->mainFrame();
if (mainFrame != page()->frameAt(event->pos().toPoint()) ||
mainFrame->scrollBarGeometry(Qt::Horizontal).contains(event->pos().toPoint()) ||
mainFrame->scrollBarGeometry(Qt::Vertical).contains(event->pos().toPoint())) {
m_scrapRect = QRect();
QGraphicsWebView::hoverMoveEvent(event);
return;
}
QWebElement hitElement = mainFrame->hitTestContent(event->pos().toPoint()).element();
QRect hitRect = hitElement.geometry();
if ((event->modifiers() & Qt::ControlModifier) != Qt::ControlModifier) {
// So we can use Ctrl+Hover to find small items
while (hitRect.height() < 100 || hitRect.width() < 100) {
if (hitElement.isNull() || hitElement == mainFrame->documentElement())
break;
hitElement = hitElement.parent();
hitRect = hitElement.geometry();
}
}
if (hitRect.translated(-mainFrame->scrollPosition()).contains(event->pos().toPoint())) {
m_scrapRect = hitRect;
} else {
m_scrapRect = QRect();
}
QGraphicsWebView::hoverMoveEvent(event);
update();
}
void WebView::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
if (page()->mainFrame()->scrollBarGeometry(Qt::Horizontal).contains(event->pos().toPoint()) ||
page()->mainFrame()->scrollBarGeometry(Qt::Vertical).contains(event->pos().toPoint())) {
QGraphicsWebView::mousePressEvent(event);
return;
}
if (m_scrapRect.isValid()) {
if (!m_scrapSelected) {
m_scrapSelected = true;
update();
qDebug() << "selected scrap rect" << m_scrapRect;
}
} else {
QGraphicsWebView::mousePressEvent(event);
return;
}
}
void WebView::keyPressEvent(QKeyEvent *event) {
if (event->key() == Qt::Key_Escape) {
m_scrapSelected = false;
update();
}
}
void WebView::paint(QPainter* painter, const QStyleOptionGraphicsItem* options, QWidget* widget)
{
QGraphicsWebView::paint(painter, options, widget);
QPainterPath pageAreaPath, greyedoutPath;
QPainterPath scrollbars;
if (page() && page()->mainFrame()) {
pageAreaPath.addRect(page()->mainFrame()->geometry());
scrollbars.addRect(page()->mainFrame()->scrollBarGeometry(Qt::Horizontal));
scrollbars.addRect(page()->mainFrame()->scrollBarGeometry(Qt::Vertical));
pageAreaPath -= scrollbars;
}
greyedoutPath = pageAreaPath;
if (m_scrapRect.isValid()) {
QPainterPath scrapPath;
QRect scrapRect = m_scrapRect.translated(-page()->mainFrame()->scrollPosition());
scrapPath.addRect(scrapRect);
greyedoutPath -= scrapPath;
}
painter->setClipPath(greyedoutPath);
painter->setPen(Qt::NoPen);
painter->setBrush(QBrush(Qt::black));
painter->setOpacity(0.5);
painter->drawRect(rect());
if (m_scrapRect.isValid()) {
QRect scrapRect = m_scrapRect.translated(-page()->mainFrame()->scrollPosition());
painter->setClipPath(pageAreaPath);
painter->setOpacity(1);
painter->setPen(QPen(Qt::white, 2));
painter->setBrush(Qt::NoBrush);
painter->drawRect(scrapRect);
if (m_scrapSelected) {
QList<QPoint> nodes;
nodes << scrapRect.topLeft() << scrapRect.topRight();
nodes << scrapRect.bottomLeft() << scrapRect.bottomRight();
nodes << QPoint(scrapRect.center().x(), scrapRect.top());
nodes << QPoint(scrapRect.center().x(), scrapRect.bottom());
nodes << QPoint(scrapRect.left(), scrapRect.center().y());
nodes << QPoint(scrapRect.right(), scrapRect.center().y());
foreach(QPoint node, nodes) {
QLinearGradient g(node - QPointF(5, 5), node + QPointF(5, 5));
g.setColorAt(0, Qt::white);
g.setColorAt(0.9, Qt::black);
painter->setBrush(g);
painter->setPen(Qt::NoPen);
painter->drawEllipse(node, 5, 5);
}
}
}
}
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