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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
#include <QFile>
#include <QList>
#include <QDebug>
#include <QVector>
#include <cmath>
#include <cstdlib>
#include <cstdio>
#include "scimgdataloader_wpg.h"
#include "third_party/wpg/WPGStreamImplementation.h"
ScrPainterIm::ScrPainterIm() :
fillrule(false),
gradientAngle(0.0),
isGradient(false),
fillSet(false),
strokeSet(false),
image(nullptr)
{
}
void ScrPainterIm::startGraphics(double width, double height)
{
currentPen = QPen(Qt::black, 1);
currentBrush = Qt::black;
Coords = QPainterPath();
*image = QImage(qRound(width * 72), qRound(height * 72), QImage::Format_ARGB32);
image->fill(qRgba(255, 255, 255, 255));
imagePainter.begin(image);
imagePainter.setRenderHint(QPainter::Antialiasing , true);
fillrule = true;
gradientAngle = 0.0;
isGradient = false;
fillSet = false;
strokeSet = false;
currentGradient = QLinearGradient();
// qDebug() << "Start Graphics" << qRound(width * 72) << qRound(height * 72);
}
void ScrPainterIm::endGraphics()
{
imagePainter.end();
// qDebug() << "End Graphics";
}
void ScrPainterIm::startLayer(unsigned int id)
{
}
void ScrPainterIm::endLayer(unsigned int id)
{
}
void ScrPainterIm::setPen(const libwpg::WPGPen& pen)
{
QVector<double> dashArray;
Qt::PenJoinStyle lineJoin;
Qt::PenCapStyle lineEnd;
double LineW = 72 * pen.width;
QColor foreColor = QColor(pen.foreColor.red, pen.foreColor.green, pen.foreColor.blue, 255 - pen.foreColor.alpha);
if(!pen.solid)
{
for (unsigned i = 0; i < pen.dashArray.count(); i++)
dashArray.append(pen.dashArray.at(i)*LineW);
}
switch (pen.joinstyle)
{
case 1:
lineJoin = Qt::BevelJoin;
break;
case 2:
lineJoin = Qt::MiterJoin;
break;
case 3:
lineJoin = Qt::RoundJoin;
break;
default:
lineJoin = Qt::MiterJoin;
break;
}
switch (pen.capstyle)
{
case 0:
lineEnd = Qt::FlatCap;
break;
case 1:
lineEnd = Qt::RoundCap;
break;
case 2:
lineEnd = Qt::SquareCap;
break;
default:
lineEnd = Qt::FlatCap;
break;
}
if(!pen.solid)
{
currentPen = QPen(foreColor, LineW, Qt::SolidLine, lineEnd, lineJoin);
currentPen.setDashPattern(dashArray);
}
else
currentPen = QPen(foreColor, LineW, Qt::SolidLine, lineEnd, lineJoin);
strokeSet = true;
// qDebug() << "Set Pen" << pen.foreColor.red << pen.foreColor.green << pen.foreColor.blue << pen.foreColor.alpha;
}
void ScrPainterIm::setBrush(const libwpg::WPGBrush& brush)
{
isGradient = false;
if(brush.style == libwpg::WPGBrush::Solid)
{
currentBrush = QColor(brush.foreColor.red, brush.foreColor.green, brush.foreColor.blue, 255 - brush.foreColor.alpha);
}
else if (brush.style == libwpg::WPGBrush::Gradient)
{
gradientAngle = brush.gradient.angle();
isGradient = true;
currentGradient = QLinearGradient();
for (unsigned c = 0; c < brush.gradient.count(); c++)
{
QColor stopC(brush.gradient.stopColor(c).red, brush.gradient.stopColor(c).green, brush.gradient.stopColor(c).blue);
double pos = qBound(0.0, fabs(brush.gradient.stopOffset(c)), 1.0);
currentGradient.setColorAt(pos, stopC);
}
}
else if (brush.style == libwpg::WPGBrush::NoBrush)
currentBrush = QColor(Qt::NoBrush);
fillSet = true;
}
void ScrPainterIm::setFillRule(FillRule rule)
{
fillrule = (rule != libwpg::WPGPaintInterface::WindingFill);
// qDebug() << "Fill Rule " << fillrule;
}
void ScrPainterIm::drawRectangle(const libwpg::WPGRect& rect, double rx, double ry)
{
imagePainter.setBrush(currentBrush);
imagePainter.setPen(currentPen);
QRectF rr(rect.x1 * 72, rect.y1 * 72, rect.width() * 72, rect.height() * 72);
if (isGradient)
{
QTransform m1;
m1.rotate(-gradientAngle);
currentGradient.setStart(rr.x(), rr.y());
QPointF target = m1.map(QPointF(rr.x(), rr.bottom()));
currentGradient.setFinalStop(target);
imagePainter.setBrush(currentGradient);
}
if ((rx > 0) || (ry > 0))
imagePainter.drawRoundedRect(rr, 72 * rx, 72 * ry);
else
imagePainter.drawRect(rr);
// qDebug() << "Draw Rect " << rr;
}
void ScrPainterIm::drawEllipse(const libwpg::WPGPoint& center, double rx, double ry)
{
imagePainter.setBrush(currentBrush);
imagePainter.setPen(currentPen);
QRectF rr(0, 0, rx * 144.0, ry * 144.0);
if (isGradient)
{
QTransform m1;
m1.rotate(-gradientAngle);
currentGradient.setStart(rr.x(), rr.y());
QPointF target = m1.map(QPointF(rr.x(), rr.bottom()));
currentGradient.setFinalStop(target);
imagePainter.setBrush(currentGradient);
}
rr.translate(72*(center.x - rx), 72*(center.y - ry));
imagePainter.drawEllipse(rr);
// qDebug() << "Draw Ellipse" << rr;
}
void ScrPainterIm::drawPolygon(const libwpg::WPGPointArray& vertices, bool closed)
{
if(vertices.count() < 2)
return;
imagePainter.setBrush(currentBrush);
imagePainter.setPen(currentPen);
Coords = QPainterPath();
Coords.moveTo(72 * vertices[0].x, 72 * vertices[0].y);
for (unsigned i = 1; i < vertices.count(); i++)
{
Coords.lineTo(72 * vertices[i].x, 72 * vertices[i].y);
}
if (isGradient)
{
QRectF rr(Coords.boundingRect());
QTransform m1;
m1.rotate(-gradientAngle);
currentGradient.setStart(rr.x(), rr.y());
QPointF target = m1.map(QPointF(rr.x(), rr.bottom()));
currentGradient.setFinalStop(target);
imagePainter.setBrush(currentGradient);
}
if (!closed)
imagePainter.setBrush(Qt::NoBrush);
else
Coords.closeSubpath();
imagePainter.drawPath(Coords);
// qDebug() << "Draw Polygon";
}
void ScrPainterIm::drawPath(const libwpg::WPGPath& path)
{
Coords = QPainterPath();
for (unsigned i = 0; i < path.count(); i++)
{
libwpg::WPGPathElement element = path.element(i);
libwpg::WPGPoint point = element.point;
switch (element.type)
{
case libwpg::WPGPathElement::MoveToElement:
Coords.moveTo(72 * point.x, 72 * point.y);
break;
case libwpg::WPGPathElement::LineToElement:
Coords.lineTo(72 * point.x, 72 * point.y);
break;
case libwpg::WPGPathElement::CurveToElement:
Coords.cubicTo(72*element.extra1.x, 72*element.extra1.y, 72*element.extra2.x, 72*element.extra2.y, 72 * point.x, 72 * point.y);
break;
default:
break;
}
}
if (!path.filled)
imagePainter.setBrush(Qt::NoBrush);
else
{
if (isGradient)
{
QRectF rr(Coords.boundingRect());
QTransform m1;
m1.rotate(-gradientAngle);
currentGradient.setStart(rr.x(), rr.y());
QPointF target = m1.map(QPointF(rr.x(), rr.bottom()));
currentGradient.setFinalStop(target);
imagePainter.setBrush(currentGradient);
}
else
imagePainter.setBrush(currentBrush);
}
if (!path.framed)
imagePainter.setPen(Qt::NoPen);
else
imagePainter.setPen(currentPen);
if(path.closed)
Coords.closeSubpath();
imagePainter.drawPath(Coords);
// qDebug() << "Draw Path" << currentPen << currentBrush;
}
void ScrPainterIm::drawBitmap(const libwpg::WPGBitmap& bitmap, double hres, double vres)
{
QImage img(bitmap.width(), bitmap.height(), QImage::Format_RGB32);
for (int x = 0; x < bitmap.width(); x++)
{
for (int y = 0; y < bitmap.height(); y++)
{
libwpg::WPGColor color = bitmap.pixel(x, y);
img.setPixel(x, y, qRgb(color.red, color.green, color.blue));
}
}
double w = (bitmap.rect.x2 - bitmap.rect.x1) * 72.0;
double h = (bitmap.rect.y2 - bitmap.rect.y1) * 72.0;
imagePainter.drawImage(QRectF(bitmap.rect.x1 * 72, bitmap.rect.y1 * 72, w, h), img);
// qDebug() << "Draw Bitmap";
}
void ScrPainterIm::drawImageObject(const libwpg::WPGBinaryData& /*binaryData*/)
{
// qDebug() << "drawBinaryData";
}
ScImgDataLoader_WPG::ScImgDataLoader_WPG()
{
initSupportedFormatList();
}
void ScImgDataLoader_WPG::initSupportedFormatList()
{
m_supportedFormats.clear();
m_supportedFormats.append( "wpg" );
}
bool ScImgDataLoader_WPG::preloadAlphaChannel(const QString& fn, int /*page*/, int res, bool& hasAlpha)
{
initialize();
hasAlpha = false;
return true;
}
void ScImgDataLoader_WPG::loadEmbeddedProfile(const QString& fn, int /*page*/)
{
m_embeddedProfile.resize(0);
m_profileComponents = 0;
}
bool ScImgDataLoader_WPG::loadPicture(const QString& fn, int /*page*/, int /*res*/, bool /*thumbnail*/)
{
QFile file(fn);
if (!file.exists())
{
qDebug() << "File " << QFile::encodeName(fn).data() << " does not exist";
return false;
}
if (!file.open( QIODevice::ReadOnly))
{
qDebug() << "Cannot open file " << QFile::encodeName(fn).data();
return false;
}
QByteArray ba = file.readAll();
file.close();
initialize();
libwpg::WPGMemoryStream input(ba.constData(), ba.size());
if (!libwpg::WPGraphics::isSupported(&input))
{
fprintf(stderr, "ERROR: Unsupported file format (unsupported version) or file is encrypted!\n");
return false;
}
ScrPainterIm painter;
m_image = QImage();
painter.image = &m_image;
libwpg::WPGraphics::parse(&input, &painter);
m_imageInfoRecord.type = ImageTypeOther;
m_imageInfoRecord.exifDataValid = false;
m_imageInfoRecord.xres = 72;
m_imageInfoRecord.yres = 72;
m_imageInfoRecord.BBoxX = 0;
m_imageInfoRecord.colorspace = ColorSpaceRGB;
m_imageInfoRecord.BBoxH = m_image.height();
m_pixelFormat = Format_BGRA_8;
return true;
}