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