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/*
* DISTRHO Plugin Framework (DPF)
* Copyright (C) 2012-2022 Filipe Coelho <falktx@falktx.com>
*
* Permission to use, copy, modify, and/or distribute this software for any purpose with
* or without fee is hereby granted, provided that the above copyright notice and this
* permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef DGL_COLOR_HPP_INCLUDED
#define DGL_COLOR_HPP_INCLUDED
#include "Base.hpp"
struct NVGcolor;
START_NAMESPACE_DGL
// --------------------------------------------------------------------------------------------------------------------
/**
A color made from red, green, blue and alpha floating-point values in [0..1] range.
*/
struct Color {
/**
Direct access to the color values.
*/
union {
float rgba[4];
struct { float red, green, blue, alpha; };
};
/**
Create solid black color.
*/
Color() noexcept;
/**
Create a color from red, green, blue and alpha numeric values.
All values except alpha must be in [0..255] range, with alpha in [0..1] range.
*/
Color(int red, int green, int blue, float alpha = 1.0f) noexcept;
/**
Create a color from red, green, blue and alpha floating-point values.
All values must in [0..1] range.
*/
Color(float red, float green, float blue, float alpha = 1.0f) noexcept;
/**
Create a color by copying another color.
*/
Color(const Color& color) noexcept;
Color& operator=(const Color& color) noexcept;
/**
Create a color by linearly interpolating two other colors.
*/
Color(const Color& color1, const Color& color2, float u) noexcept;
/**
Create a new color based on this one but with a different alpha value.
*/
Color withAlpha(float alpha) const noexcept;
/**
Create a new color based on this one but with subtracted numeric value on all elements.
Value must be in [0..255] range.
*/
Color minus(int value) const noexcept;
/**
Create a new color based on this one but with subtracted floating-point value on all elements.
Value must be in [0..1] range.
*/
Color minus(float value) const noexcept;
/**
Create a new color based on this one but with added numeric value on all elements.
Value must be in [0..255] range.
*/
Color plus(int value) const noexcept;
/**
Create a new color based on this one but with added floating-point value on all elements.
Value must be in [0..1] range.
*/
Color plus(float value) const noexcept;
/**
Create a new color based on this one but colors inverted.
*/
Color invert() const noexcept;
/**
Create a color specified by hue, saturation and lightness.
Values must in [0..1] range.
*/
static Color fromHSL(float hue, float saturation, float lightness, float alpha = 1.0f);
/**
Create a color from a HTML string like "#333" or "#112233".
*/
static Color fromHTML(const char* rgb, float alpha = 1.0f) noexcept;
/**
Linearly interpolate this color against another.
*/
void interpolate(const Color& other, float u) noexcept;
/**
Check if this color matches another.
@note Comparison is done within 8-bit color space.
*/
bool isEqual(const Color& color, bool withAlpha = true) noexcept;
bool isNotEqual(const Color& color, bool withAlpha = true) noexcept;
bool operator==(const Color& color) noexcept;
bool operator!=(const Color& color) noexcept;
/**
Fix color bounds if needed.
*/
void fixBounds() noexcept;
/**
Set this color for use in the next drawing operation for the provided context.
*/
void setFor(const GraphicsContext& context, bool includeAlpha = false);
/**
@internal
Needed for NanoVG compatibility.
*/
Color(const NVGcolor&) noexcept;
operator NVGcolor() const noexcept;
};
// --------------------------------------------------------------------------------------------------------------------
END_NAMESPACE_DGL
#endif // DGL_COLOR_HPP_INCLUDED
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