Qt 5 Compatibility APIs: Qt Graphical Effects
The Qt Graphical Effects module is provided for compatibility with applications written for Qt 5. As far as practically feasible, effects have been ported, but some dynamically generated effects are incompatible with the approach to shader effects in Qt 6 and have thus been left out:
- All blur effects besides FastBlur: GaussianBlur, MaskedBlur, RecursiveBlur, DirectionalBlur, RadialBlur, ZoomBlur.
Dependencies on any of these types have to be replaced by a custom shader effect in the application code.
Effects are visual items that can be added to Qt Quick user interface as UI components. To import the Qt Graphical Effects types, include the Qt Graphical Effects module by adding the following statement to the QML file:
To use the effects, simply add a specific effect declaration to the QML scene and configure the effects properties. The source item type can be any QML type, even video or another effect. Pipelining multiple effects together is a simple way to create even more impressive output.
The following list presents the functional division of types that are part of Qt Graphical Effects:
Adjusts brightness and contrast
Alters the colors of the source item by applying an overlay color
Sets the color in the HSL color space
Reduces the saturation of the colors
Alters the luminance of the source item
Alters the source item colors in the HSL color space
Adjusts color levels in the RGBA color space
Draws a conical gradient
Draws a linear gradient
Draws a radial gradient
Moves the pixels of the source item according to the given displacement map
Generates a colorized and blurred shadow image of the source and places it behind the original, giving the impression that source item is raised from the background
Applies a fast blur effect to one or more source items
Generates a blurred and colorized image of the source and places it behind the original, giving impression that the source is glowing
Generates a blurred and colorized rectangle, which gives the impression that the source is glowing
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