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#ifndef LUMINA_PDF_GRAPHICSITEMS_H
#define LUMINA_PDF_GRAPHICSITEMS_H
#include <QGraphicsItem>
#include <QPainter>
#include <QStyleOption>
#include <QTextDocument>
class InkItem : public QGraphicsItem {
public:
InkItem(QGraphicsItem *parent, Annotation *_annot)
: QGraphicsItem(parent), pointData(_annot->getInkList()),
inkColor(_annot->getColor()), annot(_annot) {
setCacheMode(DeviceCoordinateCache);
bbox = annot->getLoc();
}
QRectF boundingRect() const Q_DECL_OVERRIDE { return bbox; }
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget) Q_DECL_OVERRIDE {
Q_UNUSED(widget);
painter->setClipRect(option->exposedRect);
QPen inkPen = QPen(inkColor);
painter->setPen(inkPen);
foreach (QVector<QPointF> pointList, pointData) {
painter->drawLines(pointList);
}
}
private:
QRectF bbox;
QVector<QVector<QPointF>> pointData;
QColor inkColor;
Annotation *annot;
};
class PopupItem : public QGraphicsItem {
public:
PopupItem(QGraphicsItem *parent, Annotation *_annot)
: QGraphicsItem(parent), author(_annot->getAuthor()),
text(_annot->getText()) {
QRectF loc = _annot->getLoc();
setCacheMode(DeviceCoordinateCache);
QString allText = "Author: " + author + "\n\n" + text;
QTextDocument document;
document.setDefaultFont(QFont("Helvitica", 10, QFont::Normal));
document.setPageSize(QSize(120, 120));
document.setHtml(allText);
loc.moveTopLeft(
QPointF(loc.center().x(), loc.center().y() + loc.height() / 2));
loc.setSize(document.size() + QSize(10, 10));
bbox = loc;
}
QRectF boundingRect() const Q_DECL_OVERRIDE { return bbox; }
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget) Q_DECL_OVERRIDE {
Q_UNUSED(widget);
QString allText = "Author: " + author + "\n\n" + text;
painter->setClipRect(option->exposedRect);
painter->setFont(QFont("Helvitica", 10, QFont::Normal));
painter->setBrush(QBrush(QColor(255, 255, 177, 255)));
painter->drawRect(bbox);
painter->setPen(QPen(QColor("Black")));
painter->drawText(bbox, Qt::AlignLeft | Qt::TextWordWrap, allText);
}
private:
QRectF bbox;
QString author;
QString text;
};
class AnnotZone : public QGraphicsItem {
public:
AnnotZone(QGraphicsItem *parent, Annotation *_annot, PopupItem *_annotItem)
: QGraphicsItem(parent), bbox(_annot->getLoc()), annot(_annotItem) {
_hasText = !_annot->getText().isEmpty();
_hasAuthor = !_annot->getAuthor().isEmpty();
}
QRectF boundingRect() const Q_DECL_OVERRIDE { return bbox; }
PopupItem *annotation() const { return annot; }
bool hasText() const { return _hasText; }
bool hasAuthor() const { return _hasAuthor; }
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget) Q_DECL_OVERRIDE {
Q_UNUSED(widget);
Q_UNUSED(painter);
Q_UNUSED(option);
}
private:
QRectF bbox;
PopupItem *annot;
bool _hasText;
bool _hasAuthor;
};
class LinkItem : public QGraphicsItem {
public:
LinkItem(QGraphicsItem *parent, TextData *_data)
: QGraphicsItem(parent), bbox(_data->loc()), data(_data) {
setCacheMode(DeviceCoordinateCache);
setAcceptHoverEvents(true);
}
QRectF boundingRect() const Q_DECL_OVERRIDE { return bbox; }
inline TextData *getData() const { return data; }
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget) Q_DECL_OVERRIDE {
Q_UNUSED(widget);
painter->setClipRect(option->exposedRect);
painter->setBrush(QBrush(QColor(255, 255, 177, 100)));
painter->setPen(QPen(QColor(255, 255, 100, 125)));
painter->drawRect(bbox);
}
private:
QRectF bbox;
TextData *data;
};
class PageItem : public QGraphicsItem {
public:
PageItem(int _pageNum, QImage _pagePicture, QSize _paperSize,
Renderer *_backend)
: pageNum(_pageNum), pagePicture(_pagePicture), paperSize(_paperSize),
BACKEND(_backend) {
brect = QRectF(QPointF(-25, -25), QSizeF(paperSize) + QSizeF(50, 50));
setCacheMode(DeviceCoordinateCache);
setAcceptHoverEvents(true);
}
QRectF boundingRect() const Q_DECL_OVERRIDE { return brect; }
inline int pageNumber() const { return pageNum; }
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget) Q_DECL_OVERRIDE {
Q_UNUSED(widget);
// Ensure all the antialiasing/smoothing options are turned on
painter->setRenderHint(QPainter::Antialiasing);
painter->setRenderHint(QPainter::TextAntialiasing);
painter->setRenderHint(QPainter::SmoothPixmapTransform);
QRectF paperRect(0, 0, paperSize.width(), paperSize.height());
// Draw shadow
painter->setClipRect(option->exposedRect);
qreal shWidth = paperRect.width() / 100;
QRectF rshadow(paperRect.topRight() + QPointF(0, shWidth),
paperRect.bottomRight() + QPointF(shWidth, 0));
QLinearGradient rgrad(rshadow.topLeft(), rshadow.topRight());
rgrad.setColorAt(0.0, QColor(0, 0, 0, 255));
rgrad.setColorAt(1.0, QColor(0, 0, 0, 0));
painter->fillRect(rshadow, QBrush(rgrad));
QRectF bshadow(paperRect.bottomLeft() + QPointF(shWidth, 0),
paperRect.bottomRight() + QPointF(0, shWidth));
QLinearGradient bgrad(bshadow.topLeft(), bshadow.bottomLeft());
bgrad.setColorAt(0.0, QColor(0, 0, 0, 255));
bgrad.setColorAt(1.0, QColor(0, 0, 0, 0));
painter->fillRect(bshadow, QBrush(bgrad));
QRectF cshadow(paperRect.bottomRight(),
paperRect.bottomRight() + QPointF(shWidth, shWidth));
QRadialGradient cgrad(cshadow.topLeft(), shWidth, cshadow.topLeft());
cgrad.setColorAt(0.0, QColor(0, 0, 0, 255));
cgrad.setColorAt(1.0, QColor(0, 0, 0, 0));
painter->fillRect(cshadow, QBrush(cgrad));
painter->setClipRect(paperRect & option->exposedRect);
painter->fillRect(paperRect, Qt::white);
painter->drawImage(QPoint(0, 0), pagePicture);
for (int k = 0; k < BACKEND->annotSize(pageNum - 1); k++) {
Annotation *annot = BACKEND->annotList(pageNum - 1, k);
painter->drawImage(annot->getLoc(), annot->renderImage());
}
}
private:
int pageNum;
QImage pagePicture;
QSize paperSize;
QRectF brect;
Renderer *BACKEND;
};
#endif // LUMINA_PDF_GRAPHICSITEMS_H
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