25bd5d8adb
subrepo: subdir: "deps/juce" merged: "b13f9084e" upstream: origin: "https://github.com/essej/JUCE.git" branch: "sono6good" commit: "b13f9084e" git-subrepo: version: "0.4.3" origin: "https://github.com/ingydotnet/git-subrepo.git" commit: "2f68596"
114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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//==============================================================================
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/**
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Defines a drop-shadow effect.
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@tags{Graphics}
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*/
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struct JUCE_API DropShadow
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{
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/** Creates a default drop-shadow effect. */
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DropShadow() = default;
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/** Creates a drop-shadow object with the given parameters. */
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DropShadow (Colour shadowColour, int radius, Point<int> offset) noexcept;
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/** Renders a drop-shadow based on the alpha-channel of the given image. */
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void drawForImage (Graphics& g, const Image& srcImage) const;
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/** Renders a drop-shadow based on the shape of a path. */
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void drawForPath (Graphics& g, const Path& path) const;
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/** Renders a drop-shadow for a rectangle.
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Note that for speed, this approximates the shadow using gradients.
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*/
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void drawForRectangle (Graphics& g, const Rectangle<int>& area) const;
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/** The colour with which to render the shadow.
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In most cases you'll probably want to leave this as black with an alpha
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value of around 0.5
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*/
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Colour colour { 0x90000000 };
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/** The approximate spread of the shadow. */
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int radius { 4 };
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/** The offset of the shadow. */
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Point<int> offset;
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};
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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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@tags{Graphics}
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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() method.
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*/
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DropShadowEffect();
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/** Destructor. */
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~DropShadowEffect() override;
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//==============================================================================
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/** Sets up parameters affecting the shadow's appearance. */
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void setShadowProperties (const DropShadow& newShadow);
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//==============================================================================
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/** @internal */
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void applyEffect (Image& sourceImage, Graphics& destContext, float scaleFactor, float alpha) override;
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private:
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//==============================================================================
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DropShadow shadow;
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JUCE_LEAK_DETECTOR (DropShadowEffect)
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};
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} // namespace juce
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