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#include "scalableicon.hpp"
#include <QApplication>
#include <QDataStream>
#include <QDebug>
#include <QDir>
#include <QFont>
#include <QIODevice>
#include <QIconEngine>
#include <QPainter>
#include <QPalette>
#include <QtSvg/QSvgRenderer>
namespace Misc
{
Q_GLOBAL_STATIC(QSet<ScalableIcon*>, ScalableIconInstances)
ScalableIcon::ScalableIcon(const QByteArray& svgContent)
: mTemplate(svgContent)
{
update();
ScalableIconInstances->insert(this);
}
ScalableIcon::~ScalableIcon()
{
if (!ScalableIconInstances.isDestroyed())
{
ScalableIconInstances->remove(this);
}
}
QIcon Misc::ScalableIcon::load(const QString& fileName)
{
if (fileName.isEmpty())
return QIcon();
QFile iconFile(fileName);
if (!iconFile.open(QIODevice::ReadOnly))
{
qDebug() << "Failed to open icon file:" << fileName;
return QIcon();
}
auto content = iconFile.readAll();
if (!content.startsWith("<?xml"))
return QIcon(fileName);
return QIcon(new ScalableIcon(content));
}
void ScalableIcon::update()
{
constexpr const char* templateColor = "#4d4d4d";
mContent = mTemplate;
auto themeColor = QApplication::palette().text().color().name().toLower().toLatin1();
mContent.replace(templateColor, themeColor);
}
void ScalableIcon::updateAllIcons()
{
for (auto engine : *ScalableIconInstances)
{
engine->update();
}
}
void ScalableIcon::paint(QPainter* painter, const QRect& rect, QIcon::Mode mode, QIcon::State state)
{
Q_UNUSED(mode);
Q_UNUSED(state);
QSvgRenderer renderer(mContent);
renderer.render(painter, rect);
}
QIconEngine* ScalableIcon::clone() const
{
return new ScalableIcon(*this);
}
QPixmap ScalableIcon::pixmap(const QSize& size, QIcon::Mode mode, QIcon::State state)
{
QPixmap pix = QPixmap(size);
pix.fill(Qt::transparent);
QPainter painter(&pix);
QRect r(QPoint(0.0, 0.0), size);
this->paint(&painter, r, mode, state);
if (mode != QIcon::Disabled)
return pix;
// For disabled icons use grayscale icons with 50% transparency
QImage img = pix.toImage();
for (int x = 0; x < img.width(); x++)
{
for (int y = 0; y < img.height(); y++)
{
QColor n = img.pixelColor(x, y);
int gray = qGray(n.red(), n.green(), n.blue());
img.setPixelColor(x, y, QColor(gray, gray, gray, n.alpha() / 2));
}
}
return QPixmap::fromImage(img, Qt::NoFormatConversion);
}
}
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