#include "qtimage.h"
#include <cassert>
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Weffc++"
#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
#pragma GCC diagnostic ignored "-Wunused-but-set-parameter"
#include <QGraphicsItem>
#include <QGraphicsScene>
#include <QPainter>
#include "testtimer.h"
#include "trace.h"
#pragma GCC diagnostic pop
ribi::QtImage::QtImage() noexcept
{
#ifndef NDEBUG
Test();
#endif // NDEBUG
}
QImage ribi::QtImage::Difference(const QImage& base, const QImage& to_xor) noexcept
{
QImage result{base};
{
QPainter painter(&result);
painter.setCompositionMode(QPainter::CompositionMode_Difference);
painter.drawImage(0,0,to_xor);
}
return result;
}
std::string ribi::QtImage::GetVersion() noexcept
{
return "1.0";
}
std::vector<std::string> ribi::QtImage::GetVersionHistory() noexcept
{
return {
"2014-08-05: Version 1.0: initial version",
};
}
QImage ribi::QtImage::Paint(const QGraphicsItem& item) noexcept
{
if (item.scene())
{
auto& scene = *item.scene();
// Create the image with the exact size of the shrunk scene
const QSize old_size{scene.sceneRect().size().toSize()};
//Rescaled by a factor two to fix BUG_260
//const QSize new_size(old_size.scaled(2,2, Qt::KeepAspectRatio));
QImage image(old_size, QImage::Format_ARGB32);
// Start all pixels transparent
image.fill(Qt::transparent);
QPainter painter(&image);
scene.render(&painter);
return image;
}
else
{
QGraphicsScene scene;
scene.addItem(&const_cast<QGraphicsItem&>(item)); //Temporarily add the item, won't modify it
const QSize old_size{scene.sceneRect().size().toSize()};
//Rescaled by a factor two to fix BUG_260
//const QSize new_size(old_size.scaled(2,2, Qt::KeepAspectRatio));
QImage image(old_size, QImage::Format_ARGB32);
// Start all pixels transparent
image.fill(Qt::transparent);
QPainter painter(&image);
scene.render(&painter);
scene.removeItem(&const_cast<QGraphicsItem&>(item)); //Prevent item being deleted
return image;
}
}
#ifndef NDEBUG
void ribi::QtImage::Test() noexcept
{
{
static bool is_tested{false};
if (is_tested) return;
is_tested = true;
}
const TestTimer test_timer(__func__,__FILE__,1.0);
const bool verbose{false};
if (verbose) { TRACE("Default-construction of QtImage"); }
{
const QtImage q;
}
if (verbose) { TRACE("QImage pixel manipultion"); }
{
QImage q(1,1,QImage::Format_RGB32);
q.setPixel(0,0,qRgb(1,2,3));
assert(q.pixel(0,0) == qRgb(1,2,3));
}
if (verbose) { TRACE("QGraphicsItem rendering"); }
{
QGraphicsSimpleTextItem item;
item.setText(__func__);
QImage image{QtImage().Paint(item)};
assert(image.width() > 1);
assert(image.height() > 1);
image.save("tmp_ribi_QtImage_Test.png");
}
}
#endif
QImage ribi::QtImage::Xor(const QImage& base, const QImage& to_xor) noexcept
{
QImage result{base};
{
QPainter painter(&result);
//painter.setCompositionMode(QPainter::CompositionMode_Xor);
painter.setCompositionMode(QPainter::CompositionMode_Multiply);
painter.drawImage(0,0,to_xor);
}
return result;
}
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