geometrize::image Namespace Reference

Functions
Bitmap	createBitmap (const QImage &image)
	createBitmap Creates a bitmap data object from the given image. More...
geometrize::Bitmap	convertImageToBitmapWithDownscaling (const QImage &image)
	imageToBitmapWithDownscaling Creates a bitmap data object from the given image, downscaling in the process based on global preferences for image resizing More...
QImage	createImage (const Bitmap &data)
	createImage Creates an image from the bitmap data object. Assumes RGBA8888 format. More...
QPixmap	createPixmap (const Bitmap &data)
	createPixmap Creates a pixmap from the bitmap data object. Assumes RGBA8888 format. More...
QImage	loadImage (const std::string &filePath)
	loadImage Loads an image from the image at the file path. Converts to RGBA8888 format. More...
QImage	convertImageToRgba8888 (const QImage &image)
	convertImageToRgba8888 Returns a copy of the image in the RGBA8888 format. More...

Function Documentation

convertImageToBitmapWithDownscaling()

geometrize::Bitmap geometrize::image::convertImageToBitmapWithDownscaling

(

const QImage &

image

)

imageToBitmapWithDownscaling Creates a bitmap data object from the given image, downscaling in the process based on global preferences for image resizing

Parameters

image

The image to create the bitmap data from.

Returns

The new bitmap data.

{
    QImage im{image.copy()};
 
    const geometrize::preferences::GlobalPreferences& prefs{geometrize::preferences::getGlobalPreferences()};
    if(prefs.isImageTaskImageResizeEnabled()) {
        const std::pair<std::uint32_t, std::uint32_t> sizeThreshold{prefs.getImageTaskResizeThreshold()};
        const QSize imageSize{im.size()};
 
        if(sizeThreshold.first < static_cast<unsigned int>(imageSize.width())
                || sizeThreshold.second < static_cast<unsigned int>(imageSize.height())) {
            im = image.scaled(sizeThreshold.first, sizeThreshold.second, Qt::KeepAspectRatio, Qt::SmoothTransformation).convertToFormat(QImage::Format_RGBA8888);
        }
    }
    return geometrize::image::createBitmap(im.convertToFormat(QImage::Format_RGBA8888));
}

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convertImageToRgba8888()

QImage geometrize::image::convertImageToRgba8888

(

const QImage &

image

)

convertImageToRgba8888 Returns a copy of the image in the RGBA8888 format.

Parameters

image

The image to convert.

Returns

A copy of the given image in RGBA8888 format.

{
    return image.convertToFormat(QImage::Format_RGBA8888);
}

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createBitmap()

Bitmap geometrize::image::createBitmap

(

const QImage &

image

)

createBitmap Creates a bitmap data object from the given image.

Parameters

image

The image to create the bitmap data from.

Returns

The new bitmap data.

{
    assert(!image.isNull() && "Image is null, will fail to create bitmap data");
    assert((image.width() != 0 && image.height() != 0) && "Image has zero width or height");
    assert((image.format() == QImage::Format_RGBA8888) && "Cannot create bitmap data from a non-RGBA8888 image");
 
    const std::vector<uchar> data(image.bits(), image.bits() + image.sizeInBytes());
    return Bitmap(image.width(), image.height(), data);
}

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createImage()

QImage geometrize::image::createImage

(

const Bitmap &

data

)

createImage Creates an image from the bitmap data object. Assumes RGBA8888 format.

Parameters

data	The bitmap data, RGBA8888 bytes (must be a multiple of 4).

Returns

The pixmap created from the bytes data.

{
    if(data.getWidth() == 0 || data.getHeight() == 0) {
        assert(0 && "Bad bitmap data");
        return QImage();
    }
 
    // Note! This takes a shallow copy of the data, and so depends on the bitmap itself continuing to live on
    return QImage(data.getDataRef().data(), data.getWidth(), data.getHeight(), QImage::Format_RGBA8888);
}

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createPixmap()

QPixmap geometrize::image::createPixmap

(

const Bitmap &

data

)

createPixmap Creates a pixmap from the bitmap data object. Assumes RGBA8888 format.

Parameters

data	The bitmap data, RGBA8888 bytes (must be a multiple of 4).

Returns

The pixmap created from the bytes data.

{
    return QPixmap::fromImage(createImage(data));
}

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loadImage()

QImage geometrize::image::loadImage

(

const std::string &

filePath

)

loadImage Loads an image from the image at the file path. Converts to RGBA8888 format.

Parameters

filePath

The file path to the image.

Returns

The image loaded from the image file.

{
    const QString path = QString::fromStdString(filePath);
    QImage image;
    if(QFile(path).exists()) {
        image = QImage(path);
    } else {
        image = QImage(QUrl(path).toLocalFile());
    }
 
    if(image.isNull()) {
        assert(0 && "Bad image data");
        return image;
    }
 
    return image.convertToFormat(QImage::Format_RGBA8888);
}

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