| 1 | /* |
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| 2 | SPDX-FileCopyrightText: 2011 Marco Martin <mart@kde.org> |
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| 3 | SPDX-FileCopyrightText: 2015 Luca Beltrame <lbeltrame@kde.org> |
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| 4 | |
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| 5 | SPDX-License-Identifier: LGPL-2.0-or-later |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef QIMAGEITEM_H |
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| 9 | #define QIMAGEITEM_H |
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| 10 | |
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| 11 | #include <QImage> |
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| 12 | #include <QQuickPaintedItem> |
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| 13 | |
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| 14 | class QImageItem : public QQuickPaintedItem |
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| 15 | { |
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| 16 | Q_OBJECT |
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| 17 | QML_ELEMENT |
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| 18 | |
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| 19 | Q_PROPERTY(QImage image READ image WRITE setImage NOTIFY imageChanged RESET resetImage) |
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| 20 | Q_PROPERTY(int nativeWidth READ nativeWidth NOTIFY nativeWidthChanged) |
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| 21 | Q_PROPERTY(int nativeHeight READ nativeHeight NOTIFY nativeHeightChanged) |
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| 22 | Q_PROPERTY(int paintedWidth READ paintedWidth NOTIFY paintedWidthChanged) |
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| 23 | Q_PROPERTY(int paintedHeight READ paintedHeight NOTIFY paintedHeightChanged) |
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| 24 | Q_PROPERTY(FillMode fillMode READ fillMode WRITE setFillMode NOTIFY fillModeChanged) |
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| 25 | Q_PROPERTY(bool null READ isNull NOTIFY nullChanged) |
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| 26 | |
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| 27 | public: |
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| 28 | enum FillMode { |
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| 29 | Stretch, // the image is scaled to fit |
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| 30 | PreserveAspectFit, // the image is scaled uniformly to fit without cropping |
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| 31 | PreserveAspectCrop, // the image is scaled uniformly to fill, cropping if necessary |
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| 32 | Tile, // the image is duplicated horizontally and vertically |
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| 33 | TileVertically, // the image is stretched horizontally and tiled vertically |
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| 34 | TileHorizontally, // the image is stretched vertically and tiled horizontally |
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| 35 | Pad, /**< the image is not transformed @since 5.96 **/ |
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| 36 | }; |
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| 37 | Q_ENUM(FillMode) |
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| 38 | |
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| 39 | explicit QImageItem(QQuickItem *parent = nullptr); |
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| 40 | ~QImageItem() override; |
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| 41 | |
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| 42 | void setImage(const QImage &image); |
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| 43 | QImage image() const; |
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| 44 | void resetImage(); |
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| 45 | |
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| 46 | int nativeWidth() const; |
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| 47 | int nativeHeight() const; |
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| 48 | |
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| 49 | int paintedWidth() const; |
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| 50 | int paintedHeight() const; |
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| 51 | |
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| 52 | FillMode fillMode() const; |
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| 53 | void setFillMode(FillMode mode); |
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| 54 | |
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| 55 | void paint(QPainter *painter) override; |
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| 56 | |
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| 57 | bool isNull() const; |
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| 58 | |
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| 59 | Q_SIGNALS: |
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| 60 | void nativeWidthChanged(); |
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| 61 | void nativeHeightChanged(); |
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| 62 | void fillModeChanged(); |
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| 63 | void imageChanged(); |
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| 64 | void nullChanged(); |
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| 65 | void paintedWidthChanged(); |
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| 66 | void paintedHeightChanged(); |
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| 67 | |
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| 68 | protected: |
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| 69 | void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) override; |
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| 70 | |
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| 71 | private: |
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| 72 | QImage m_image; |
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| 73 | FillMode m_fillMode; |
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| 74 | QRect m_paintedRect; |
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| 75 | |
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| 76 | private Q_SLOTS: |
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| 77 | void updatePaintedRect(); |
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| 78 | }; |
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| 79 | |
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| 80 | #endif |
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| 81 | |
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