Zacharias-Brohn
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
#pragma once
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#include <QtQuick/qquickitem.h>
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#include <qfuture.h>
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#include <qfuturewatcher.h>
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#include <qobject.h>
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#include <qqmlintegration.h>
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namespace ZShell {
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class ImageAnalyser : public QObject {
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Q_OBJECT
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QML_ELEMENT
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Q_PROPERTY(QString source READ source WRITE setSource NOTIFY sourceChanged)
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Q_PROPERTY(QQuickItem* sourceItem READ sourceItem WRITE setSourceItem NOTIFY sourceItemChanged)
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Q_PROPERTY(int rescaleSize READ rescaleSize WRITE setRescaleSize NOTIFY rescaleSizeChanged)
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Q_PROPERTY(QColor dominantColour READ dominantColour NOTIFY dominantColourChanged)
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Q_PROPERTY(qreal luminance READ luminance NOTIFY luminanceChanged)
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public:
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explicit ImageAnalyser(QObject* parent = nullptr);
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[[nodiscard]] QString source() const;
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void setSource(const QString& source);
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[[nodiscard]] QQuickItem* sourceItem() const;
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void setSourceItem(QQuickItem* sourceItem);
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[[nodiscard]] int rescaleSize() const;
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void setRescaleSize(int rescaleSize);
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[[nodiscard]] QColor dominantColour() const;
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[[nodiscard]] qreal luminance() const;
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Q_INVOKABLE void requestUpdate();
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signals:
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void sourceChanged();
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void sourceItemChanged();
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void rescaleSizeChanged();
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void dominantColourChanged();
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void luminanceChanged();
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private:
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using AnalyseResult = QPair<QColor, qreal>;
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QFutureWatcher<AnalyseResult>* const m_futureWatcher;
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QString m_source;
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QQuickItem* m_sourceItem;
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int m_rescaleSize;
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QColor m_dominantColour;
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qreal m_luminance;
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void update();
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static void analyse(QPromise<AnalyseResult>& promise, const QImage& image, int rescaleSize);
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};
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} // namespace ZShell
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