95 lines
1.9 KiB
C++
95 lines
1.9 KiB
C++
#ifndef UIHELPER_H
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#define UIHELPER_H
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#include "fixC11.h"
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#include <QImage>
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#include <QPainter>
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#include <QRgb>
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#include <QIcon>
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#include <QtSvg/QSvgRenderer>
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#include <unordered_map>
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class UIHelper {
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public:
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// static QIcon getIcon(const std::string& name) {
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// const std::string file = "://res/icons/" + name + "16.png";
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// QPixmap img(file.c_str());
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// return QIcon(img);
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// }
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static const QPixmap& getPixmap(const std::string& name, const int size = 32) {
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// caching
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static std::unordered_map<std::string, QPixmap> cache;
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// try to get the image from the cache
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const std::string cacheKey = std::to_string(size) + name;
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auto it = cache.find(cacheKey);
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// not in cache?
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if (it == cache.end()) {
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// build
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const QColor fill = Qt::transparent;
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const std::string file = "://res/icons/" + name + ".svg";
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QSvgRenderer renderer(QString(file.c_str()));
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QPixmap pm(size, size);
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pm.fill(fill);
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QPainter painter(&pm);
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renderer.render(&painter, pm.rect());
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// add to cache
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cache[cacheKey] = pm;
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}
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// done
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return cache[cacheKey];
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}
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static const QPixmap& getPixmapColored(const std::string& name, const QColor color, const int size = 32) {
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// caching
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static std::unordered_map<std::string, QPixmap> cache;
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// try to get the image from the cache
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const QString hex = color.name();
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const std::string cacheKey = hex.toStdString() + "_" + std::to_string(size) + "_" + name;
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auto it = cache.find(cacheKey);
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// not in cache?
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if (it == cache.end()) {
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// copy
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QPixmap colored = getPixmap(name, size);
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QPainter painter(&colored);
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painter.setCompositionMode(QPainter::CompositionMode_SourceIn);
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painter.fillRect(colored.rect(), color);
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painter.end();
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// add to cache
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cache[cacheKey] = colored;
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}
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// done
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return cache[cacheKey];
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}
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static QIcon getIcon(const std::string& name, const int size = 32) {
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return QIcon(getPixmap(name, size));
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}
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};
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#endif // UIHELPER_H
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