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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found at: www.gnu.org/licenses
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.juce.com for more information.
==============================================================================
*/
GlowEffect::GlowEffect()
: radius (2.0f),
colour (Colours::white)
{
}
GlowEffect::~GlowEffect()
{
}
void GlowEffect::setGlowProperties (const float newRadius,
Colour newColour)
{
radius = newRadius;
colour = newColour;
}
void GlowEffect::applyEffect (Image& image, Graphics& g, float scaleFactor, float alpha)
{
Image temp (image.getFormat(), image.getWidth(), image.getHeight(), true);
ImageConvolutionKernel blurKernel (roundToInt (radius * scaleFactor * 2.0f));
blurKernel.createGaussianBlur (radius);
blurKernel.rescaleAllValues (radius);
blurKernel.applyToImage (temp, image, image.getBounds());
g.setColour (colour.withMultipliedAlpha (alpha));
g.drawImageAt (temp, 0, 0, true);
g.setOpacity (alpha);
g.drawImageAt (image, 0, 0, false);
}
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