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Legaeli
2025-10-22 09:20:23 +02:00
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CrystalizerEQ/JUCE/modules/juce_graphics/effects/juce_DropShadowEffect.cpp
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/*
==============================================================================
This file is part of the JUCE framework.
Copyright (c) Raw Material Software Limited
JUCE is an open source framework subject to commercial or open source
licensing.
By downloading, installing, or using the JUCE framework, or combining the
JUCE framework with any other source code, object code, content or any other
copyrightable work, you agree to the terms of the JUCE End User Licence
Agreement, and all incorporated terms including the JUCE Privacy Policy and
the JUCE Website Terms of Service, as applicable, which will bind you. If you
do not agree to the terms of these agreements, we will not license the JUCE
framework to you, and you must discontinue the installation or download
process and cease use of the JUCE framework.
JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
JUCE Privacy Policy: https://juce.com/juce-privacy-policy
JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
Or:
You may also use this code under the terms of the AGPLv3:
https://www.gnu.org/licenses/agpl-3.0.en.html
THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
==============================================================================
*/
namespace juce
{
DropShadow::DropShadow (Colour shadowColour, const int r, Point<int> o) noexcept
: colour (shadowColour), radius (r), offset (o)
{
jassert (radius > 0);
}
void DropShadow::drawForImage (Graphics& g, const Image& srcImage) const
{
jassert (radius > 0);
if (! srcImage.isValid())
return;
auto blurred = srcImage.convertedToFormat (Image::SingleChannel);
blurred.setBackupEnabled (false);
blurred.getPixelData()->applySingleChannelBoxBlurEffect (radius);
g.setColour (colour);
g.drawImageAt (blurred, offset.x, offset.y, true);
}
void DropShadow::drawForPath (Graphics& g, const Path& path) const
{
jassert (radius > 0);
auto area = (path.getBounds().getSmallestIntegerContainer() + offset)
.expanded (radius + 1)
.getIntersection (g.getClipBounds().expanded (radius + 1));
if (area.getWidth() <= 2 || area.getHeight() <= 2)
return;
Image pathImage { Image::SingleChannel, area.getWidth(), area.getHeight(), true };
pathImage.setBackupEnabled (false);
{
Graphics g2 (pathImage);
g2.setColour (Colours::white);
g2.fillPath (path, AffineTransform::translation ((float) (offset.x - area.getX()),
(float) (offset.y - area.getY())));
}
pathImage.getPixelData()->applySingleChannelBoxBlurEffect (radius);
g.setColour (colour);
g.drawImageAt (pathImage, area.getX(), area.getY(), true);
}
static void drawShadowSection (Graphics& g, ColourGradient& cg, Rectangle<float> area,
bool isCorner, float centreX, float centreY, float edgeX, float edgeY)
{
cg.point1 = area.getRelativePoint (centreX, centreY);
cg.point2 = area.getRelativePoint (edgeX, edgeY);
cg.isRadial = isCorner;
g.setGradientFill (cg);
g.fillRect (area);
}
void DropShadow::drawForRectangle (Graphics& g, const Rectangle<int>& targetArea) const
{
ColourGradient cg (colour, 0, 0, colour.withAlpha (0.0f), 0, 0, false);
for (float i = 0.05f; i < 1.0f; i += 0.1f)
cg.addColour (1.0 - i, colour.withMultipliedAlpha (i * i));
const float radiusInset = (float) radius / 2.0f;
const float expandedRadius = (float) radius + radiusInset;
auto area = targetArea.toFloat().reduced (radiusInset) + offset.toFloat();
auto r = area.expanded (expandedRadius);
auto top = r.removeFromTop (expandedRadius);
auto bottom = r.removeFromBottom (expandedRadius);
drawShadowSection (g, cg, top.removeFromLeft (expandedRadius), true, 1.0f, 1.0f, 0, 1.0f);
drawShadowSection (g, cg, top.removeFromRight (expandedRadius), true, 0, 1.0f, 1.0f, 1.0f);
drawShadowSection (g, cg, top, false, 0, 1.0f, 0, 0);
drawShadowSection (g, cg, bottom.removeFromLeft (expandedRadius), true, 1.0f, 0, 0, 0);
drawShadowSection (g, cg, bottom.removeFromRight (expandedRadius), true, 0, 0, 1.0f, 0);
drawShadowSection (g, cg, bottom, false, 0, 0, 0, 1.0f);
drawShadowSection (g, cg, r.removeFromLeft (expandedRadius), false, 1.0f, 0, 0, 0);
drawShadowSection (g, cg, r.removeFromRight (expandedRadius), false, 0, 0, 1.0f, 0);
g.setColour (colour);
g.fillRect (area);
}
//==============================================================================
DropShadowEffect::DropShadowEffect() = default;
DropShadowEffect::~DropShadowEffect() = default;
void DropShadowEffect::setShadowProperties (const DropShadow& newShadow)
{
shadow = newShadow;
}
void DropShadowEffect::applyEffect (Image& image, Graphics& g, float scaleFactor, float alpha)
{
DropShadow s (shadow);
s.radius = roundToInt ((float) s.radius * scaleFactor);
s.colour = s.colour.withMultipliedAlpha (alpha);
s.offset.x = roundToInt ((float) s.offset.x * scaleFactor);
s.offset.y = roundToInt ((float) s.offset.y * scaleFactor);
s.drawForImage (g, image);
g.setOpacity (alpha);
g.drawImageAt (image, 0, 0);
}
} // namespace juce
CrystalizerEQ/JUCE/modules/juce_graphics/effects/juce_DropShadowEffect.h
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/*
==============================================================================
This file is part of the JUCE framework.
Copyright (c) Raw Material Software Limited
JUCE is an open source framework subject to commercial or open source
licensing.
By downloading, installing, or using the JUCE framework, or combining the
JUCE framework with any other source code, object code, content or any other
copyrightable work, you agree to the terms of the JUCE End User Licence
Agreement, and all incorporated terms including the JUCE Privacy Policy and
the JUCE Website Terms of Service, as applicable, which will bind you. If you
do not agree to the terms of these agreements, we will not license the JUCE
framework to you, and you must discontinue the installation or download
process and cease use of the JUCE framework.
JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
JUCE Privacy Policy: https://juce.com/juce-privacy-policy
JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
Or:
You may also use this code under the terms of the AGPLv3:
https://www.gnu.org/licenses/agpl-3.0.en.html
THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
==============================================================================
*/
namespace juce
{
//==============================================================================
/**
Defines a drop-shadow effect.
@tags{Graphics}
*/
struct JUCE_API DropShadow
{
/** Creates a default drop-shadow effect. */
DropShadow() = default;
/** Creates a drop-shadow object with the given parameters. */
DropShadow (Colour shadowColour, int radius, Point<int> offset) noexcept;
/** Renders a drop-shadow based on the alpha-channel of the given image. */
void drawForImage (Graphics& g, const Image& srcImage) const;
/** Renders a drop-shadow based on the shape of a path. */
void drawForPath (Graphics& g, const Path& path) const;
/** Renders a drop-shadow for a rectangle.
Note that for speed, this approximates the shadow using gradients.
*/
void drawForRectangle (Graphics& g, const Rectangle<int>& area) const;
/** The colour with which to render the shadow.
In most cases you'll probably want to leave this as black with an alpha
value of around 0.5
*/
Colour colour { 0x90000000 };
/** The approximate spread of the shadow. */
int radius { 4 };
/** The offset of the shadow. */
Point<int> offset;
};
//==============================================================================
/**
An effect filter that adds a drop-shadow behind the image's content.
(This will only work on images/components that aren't opaque, of course).
When added to a component, this effect will draw a soft-edged
shadow based on what gets drawn inside it. The shadow will also
be applied to the component's children.
For speed, this doesn't use a proper gaussian blur, but cheats by
using a simple bilinear filter. If you need a really high-quality
shadow, check out ImageConvolutionKernel::createGaussianBlur()
@see Component::setComponentEffect
@tags{Graphics}
*/
class JUCE_API DropShadowEffect : public ImageEffectFilter
{
public:
//==============================================================================
/** Creates a default drop-shadow effect.
To customise the shadow's appearance, use the setShadowProperties() method.
*/
DropShadowEffect();
/** Destructor. */
~DropShadowEffect() override;
//==============================================================================
/** Sets up parameters affecting the shadow's appearance. */
void setShadowProperties (const DropShadow& newShadow);
//==============================================================================
/** @internal */
void applyEffect (Image& sourceImage, Graphics& destContext, float scaleFactor, float alpha) override;
private:
//==============================================================================
DropShadow shadow;
JUCE_LEAK_DETECTOR (DropShadowEffect)
};
} // namespace juce
CrystalizerEQ/JUCE/modules/juce_graphics/effects/juce_GlowEffect.cpp
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/*
==============================================================================
This file is part of the JUCE framework.
Copyright (c) Raw Material Software Limited
JUCE is an open source framework subject to commercial or open source
licensing.
By downloading, installing, or using the JUCE framework, or combining the
JUCE framework with any other source code, object code, content or any other
copyrightable work, you agree to the terms of the JUCE End User Licence
Agreement, and all incorporated terms including the JUCE Privacy Policy and
the JUCE Website Terms of Service, as applicable, which will bind you. If you
do not agree to the terms of these agreements, we will not license the JUCE
framework to you, and you must discontinue the installation or download
process and cease use of the JUCE framework.
JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
JUCE Privacy Policy: https://juce.com/juce-privacy-policy
JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
Or:
You may also use this code under the terms of the AGPLv3:
https://www.gnu.org/licenses/agpl-3.0.en.html
THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
==============================================================================
*/
namespace juce
{
GlowEffect::GlowEffect() = default;
GlowEffect::~GlowEffect() = default;
void GlowEffect::setGlowProperties (float newRadius, Colour newColour, Point<int> pos)
{
radius = newRadius;
colour = newColour;
offset = pos;
}
void GlowEffect::applyEffect (Image& image, Graphics& g, float scaleFactor, float alpha)
{
auto blurred = image.createCopy();
blurred.setBackupEnabled (false);
if (auto ptr = blurred.getPixelData())
ptr->applyGaussianBlurEffect (radius * scaleFactor);
g.setColour (colour.withMultipliedAlpha (alpha));
g.drawImageAt (blurred, offset.x, offset.y, true);
g.setOpacity (alpha);
g.drawImageAt (image, offset.x, offset.y, false);
}
} // namespace juce
CrystalizerEQ/JUCE/modules/juce_graphics/effects/juce_GlowEffect.h
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/*
==============================================================================
This file is part of the JUCE framework.
Copyright (c) Raw Material Software Limited
JUCE is an open source framework subject to commercial or open source
licensing.
By downloading, installing, or using the JUCE framework, or combining the
JUCE framework with any other source code, object code, content or any other
copyrightable work, you agree to the terms of the JUCE End User Licence
Agreement, and all incorporated terms including the JUCE Privacy Policy and
the JUCE Website Terms of Service, as applicable, which will bind you. If you
do not agree to the terms of these agreements, we will not license the JUCE
framework to you, and you must discontinue the installation or download
process and cease use of the JUCE framework.
JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
JUCE Privacy Policy: https://juce.com/juce-privacy-policy
JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
Or:
You may also use this code under the terms of the AGPLv3:
https://www.gnu.org/licenses/agpl-3.0.en.html
THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
==============================================================================
*/
namespace juce
{
//==============================================================================
/**
A component effect that adds a coloured blur around the component's contents.
(This will only work on non-opaque components).
@see Component::setComponentEffect, DropShadowEffect
@tags{Graphics}
*/
class JUCE_API GlowEffect : public ImageEffectFilter
{
public:
//==============================================================================
/** Creates a default 'glow' effect.
To customise its appearance, use the setGlowProperties() method.
*/
GlowEffect();
/** Destructor. */
~GlowEffect() override;
//==============================================================================
/** Sets the glow's radius and colour.
The radius is how large the blur should be, and the colour is
used to render it (for a less intense glow, lower the colour's
opacity).
*/
void setGlowProperties (float newRadius,
Colour newColour,
Point<int> offset = {});
//==============================================================================
/** @internal */
void applyEffect (Image&, Graphics&, float scaleFactor, float alpha) override;
private:
//==============================================================================
float radius = 2.0f;
Colour colour { Colours::white };
Point<int> offset;
JUCE_LEAK_DETECTOR (GlowEffect)
};
} // namespace juce
CrystalizerEQ/JUCE/modules/juce_graphics/effects/juce_ImageEffectFilter.h
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/*
==============================================================================
This file is part of the JUCE framework.
Copyright (c) Raw Material Software Limited
JUCE is an open source framework subject to commercial or open source
licensing.
By downloading, installing, or using the JUCE framework, or combining the
JUCE framework with any other source code, object code, content or any other
copyrightable work, you agree to the terms of the JUCE End User Licence
Agreement, and all incorporated terms including the JUCE Privacy Policy and
the JUCE Website Terms of Service, as applicable, which will bind you. If you
do not agree to the terms of these agreements, we will not license the JUCE
framework to you, and you must discontinue the installation or download
process and cease use of the JUCE framework.
JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
JUCE Privacy Policy: https://juce.com/juce-privacy-policy
JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
Or:
You may also use this code under the terms of the AGPLv3:
https://www.gnu.org/licenses/agpl-3.0.en.html
THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
==============================================================================
*/
namespace juce
{
//==============================================================================
/**
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.
@see Component::setComponentEffect
@tags{Graphics}
*/
class JUCE_API ImageEffectFilter
{
public:
//==============================================================================
/** 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.
@param 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.
@param destContext the graphics context to use to draw the resultant image.
@param 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
@param alpha the alpha with which to draw the resultant image to the
target context
*/
virtual void applyEffect (Image& sourceImage,
Graphics& destContext,
float scaleFactor,
float alpha) = 0;
/** Destructor. */
virtual ~ImageEffectFilter() = default;
};
} // namespace juce