A graphical effect filter that can be applied to components. More...
|virtual void||applyEffect (Image &sourceImage, Graphics &destContext, float scaleFactor, float alpha)=0|
|Overridden to render the effect. |
A graphical effect filter that can be applied to components.
An ImageEffectFilter can be applied to the image that a component paints before it hits the screen.
This is used for adding effects like shadows, blurs, etc.
Overridden to render the effect.
The implementation of this method must use the image that is passed in as its source, and should render its output to the graphics context passed in.
|sourceImage||the image that the source component has just rendered with its paint() method. The image may or may not have an alpha channel, depending on whether the component is opaque.|
|destContext||the graphics context to use to draw the resultant image.|
|scaleFactor||a scale factor that has been applied to the image - e.g. if this is 2, then the image is actually scaled-up to twice the original resolution|
|alpha||the alpha with which to draw the resultant image to the target context|