Module qt_gui::q_pixel_format
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C++ type: QPixelFormat
Structs
This enum type is used to describe the alpha channels position relative to the color channels.
This enum type describes the boolean state if the alpha channel is multiplied into the color channels or not.
This enum describes if the alpha channel is used or not. Sometimes the pixelformat will have a size for the alpha channel, but the pixel format does actually not use the alpha channel. For example RGB32 is such a format. The RGB channels are 8 bits each, and there is no alpha channel. But the complete size for each pixel is 32. Therefore the alpha channel size is 8, but the alpha channel is ignored. Its important to note that in such situations the position of the alpha channel is significant.
This enum describes the ByteOrder of the pixel format. This enum is mostly ignored but have some use cases for YUV formats. BGR formats have their own color model, and should not be described by using the opposite endianness on an RGB format.
This enum type is used to describe the color model of the pixelformat. Alpha was added in 5.5.
This enum describes how each pixel is interpreted. If a pixel is read as a full 32 bit unsigned integer and then each channel is masked out, or if each byte is read as unsigned char values. Typically QImage formats interpret one pixel as an unsigned integer and then the color channels are masked out. OpenGL on the other hand typically interpreted pixels "one byte after the other", Ie. unsigned byte.
YUV is not represented by describing the size of the color channels. This is because YUV often use macro pixels, making the concept of sperate color channels invalid. Instead the different YUV layouts are described with this enum.