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92 lines
3.5 KiB
C++
92 lines
3.5 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-11 by Raw Material Software Ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the GNU General
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Public License (Version 2), as published by the Free Software Foundation.
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A copy of the license is included in the JUCE distribution, or can be found
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online at www.gnu.org/licenses.
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.rawmaterialsoftware.com/juce for more information.
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==============================================================================
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*/
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#ifndef __JUCE_DROPSHADOWEFFECT_JUCEHEADER__
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#define __JUCE_DROPSHADOWEFFECT_JUCEHEADER__
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#include "juce_ImageEffectFilter.h"
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//==============================================================================
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/**
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An effect filter that adds a drop-shadow behind the image's content.
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(This will only work on images/components that aren't opaque, of course).
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When added to a component, this effect will draw a soft-edged
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shadow based on what gets drawn inside it. The shadow will also
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be applied to the component's children.
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For speed, this doesn't use a proper gaussian blur, but cheats by
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using a simple bilinear filter. If you need a really high-quality
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shadow, check out ImageConvolutionKernel::createGaussianBlur()
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@see Component::setComponentEffect
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*/
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class JUCE_API DropShadowEffect : public ImageEffectFilter
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{
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public:
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//==============================================================================
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/** Creates a default drop-shadow effect.
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To customise the shadow's appearance, use the setShadowProperties()
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method.
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*/
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DropShadowEffect();
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/** Destructor. */
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~DropShadowEffect();
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//==============================================================================
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/** Sets up parameters affecting the shadow's appearance.
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@param newRadius the (approximate) radius of the blur used
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@param newOpacity the opacity with which the shadow is rendered
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@param newShadowOffsetX allows the shadow to be shifted in relation to the
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component's contents
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@param newShadowOffsetY allows the shadow to be shifted in relation to the
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component's contents
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*/
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void setShadowProperties (float newRadius,
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float newOpacity,
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int newShadowOffsetX,
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int newShadowOffsetY);
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//==============================================================================
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/** @internal */
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void applyEffect (Image& sourceImage, Graphics& destContext, float alpha);
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private:
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//==============================================================================
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int offsetX, offsetY;
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float radius, opacity;
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JUCE_LEAK_DETECTOR (DropShadowEffect);
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};
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#endif // __JUCE_DROPSHADOWEFFECT_JUCEHEADER__
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