() function tells how many of those bits that are used. The supported depths are 1 (monochrome), 8, 16, 24 and 32 bits. () function returns the depth of the image. An image's text keys can be retrieved using the () function returns the image text associated with the given text key. () functions tell whether an image's colors are all shades of gray. () function tells if the image's format respects the alpha channel, or not. Note that if you create an 8-bit image manually, you have to set a valid color table on the image as well. () function to retrieve the pixel index for a given pair of coordinates, then use the () function returns the image's entire color table. () functions provide information about the color components used to store the image data: The In case of monochrome and 8-bit images, the The color of a pixel can be retrieved by passing its coordinates to the
() function returns the number of pixels by which the image is intended to be offset by when positioned relative to other images, which also can be manipulated using the When loading an image, the file name can either refer to an actual file on disk or to one of the application's embedded resources. Provides several ways of loading an image file: The file can be loaded when constructing theįrom the given data. Objects in a static build of Qt, refer to the Objects can also be streamed and compared. Objects can be passed around by value since the There are also several functions that enables transformation of the image. Provides a collection of functions that can be used to obtain a variety of information about the image. , the painting can be performed in another thread than the current GUI thread.Ĭlass supports several image formats described by the
Is designed and optimized for I/O, and for direct pixel access and manipulation, while = Qt::IgnoreAspectRatio, Qt::TransformationModeĬlass provides a hardware-independent image representation that allows direct access to the pixel data, and can be used as a paint device.
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