mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-29 02:50:26 +00:00
301 lines
7.8 KiB
C++
301 lines
7.8 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Assertions.h>
|
|
#include <AK/Forward.h>
|
|
#include <AK/StdLibExtras.h>
|
|
#include <LibIPC/Forward.h>
|
|
|
|
namespace Gfx {
|
|
|
|
enum class ColorRole;
|
|
typedef u32 RGBA32;
|
|
|
|
inline constexpr u32 make_rgb(u8 r, u8 g, u8 b)
|
|
{
|
|
return ((r << 16) | (g << 8) | b);
|
|
}
|
|
|
|
struct HSV {
|
|
double hue { 0 };
|
|
double saturation { 0 };
|
|
double value { 0 };
|
|
};
|
|
|
|
class Color {
|
|
public:
|
|
enum NamedColor {
|
|
Transparent,
|
|
Black,
|
|
White,
|
|
Red,
|
|
Green,
|
|
Cyan,
|
|
Blue,
|
|
Yellow,
|
|
Magenta,
|
|
DarkGray,
|
|
MidGray,
|
|
LightGray,
|
|
WarmGray,
|
|
DarkCyan,
|
|
DarkGreen,
|
|
DarkBlue,
|
|
DarkRed,
|
|
MidCyan,
|
|
MidGreen,
|
|
MidRed,
|
|
MidBlue,
|
|
MidMagenta,
|
|
};
|
|
|
|
constexpr Color() { }
|
|
Color(NamedColor);
|
|
constexpr Color(u8 r, u8 g, u8 b)
|
|
: m_value(0xff000000 | (r << 16) | (g << 8) | b)
|
|
{
|
|
}
|
|
constexpr Color(u8 r, u8 g, u8 b, u8 a)
|
|
: m_value((a << 24) | (r << 16) | (g << 8) | b)
|
|
{
|
|
}
|
|
|
|
static constexpr Color from_rgb(unsigned rgb) { return Color(rgb | 0xff000000); }
|
|
static constexpr Color from_rgba(unsigned rgba) { return Color(rgba); }
|
|
|
|
u8 red() const { return (m_value >> 16) & 0xff; }
|
|
u8 green() const { return (m_value >> 8) & 0xff; }
|
|
u8 blue() const { return m_value & 0xff; }
|
|
u8 alpha() const { return (m_value >> 24) & 0xff; }
|
|
|
|
void set_alpha(u8 value)
|
|
{
|
|
m_value &= 0x00ffffff;
|
|
m_value |= value << 24;
|
|
}
|
|
|
|
void set_red(u8 value)
|
|
{
|
|
m_value &= 0xff00ffff;
|
|
m_value |= value << 16;
|
|
}
|
|
|
|
void set_green(u8 value)
|
|
{
|
|
m_value &= 0xffff00ff;
|
|
m_value |= value << 8;
|
|
}
|
|
|
|
void set_blue(u8 value)
|
|
{
|
|
m_value &= 0xffffff00;
|
|
m_value |= value;
|
|
}
|
|
|
|
Color with_alpha(u8 alpha)
|
|
{
|
|
return Color((m_value & 0x00ffffff) | alpha << 24);
|
|
}
|
|
|
|
Color blend(Color source) const
|
|
{
|
|
if (!alpha() || source.alpha() == 255)
|
|
return source;
|
|
|
|
if (!source.alpha())
|
|
return *this;
|
|
|
|
int d = 255 * (alpha() + source.alpha()) - alpha() * source.alpha();
|
|
u8 r = (red() * alpha() * (255 - source.alpha()) + 255 * source.alpha() * source.red()) / d;
|
|
u8 g = (green() * alpha() * (255 - source.alpha()) + 255 * source.alpha() * source.green()) / d;
|
|
u8 b = (blue() * alpha() * (255 - source.alpha()) + 255 * source.alpha() * source.blue()) / d;
|
|
u8 a = d / 255;
|
|
return Color(r, g, b, a);
|
|
}
|
|
|
|
Color to_grayscale() const
|
|
{
|
|
int gray = (red() + green() + blue()) / 3;
|
|
return Color(gray, gray, gray, alpha());
|
|
}
|
|
|
|
Color darkened(float amount = 0.5f) const
|
|
{
|
|
return Color(red() * amount, green() * amount, blue() * amount, alpha());
|
|
}
|
|
|
|
Color lightened(float amount = 1.2f) const
|
|
{
|
|
return Color(min(255, (int)((float)red() * amount)), min(255, (int)((float)green() * amount)), min(255, (int)((float)blue() * amount)), alpha());
|
|
}
|
|
|
|
Color inverted() const
|
|
{
|
|
return Color(~red(), ~green(), ~blue(), alpha());
|
|
}
|
|
|
|
Color xored(const Color& other) const
|
|
{
|
|
return Color(((other.m_value ^ m_value) & 0x00ffffff) | (m_value & 0xff000000));
|
|
}
|
|
|
|
RGBA32 value() const { return m_value; }
|
|
|
|
bool operator==(const Color& other) const
|
|
{
|
|
return m_value == other.m_value;
|
|
}
|
|
|
|
bool operator!=(const Color& other) const
|
|
{
|
|
return m_value != other.m_value;
|
|
}
|
|
|
|
String to_string() const;
|
|
String to_string_without_alpha() const;
|
|
static Optional<Color> from_string(const StringView&);
|
|
|
|
HSV to_hsv() const
|
|
{
|
|
HSV hsv;
|
|
double r = static_cast<double>(red()) / 255.0;
|
|
double g = static_cast<double>(green()) / 255.0;
|
|
double b = static_cast<double>(blue()) / 255.0;
|
|
double max = AK::max(AK::max(r, g), b);
|
|
double min = AK::min(AK::min(r, g), b);
|
|
double chroma = max - min;
|
|
|
|
if (!chroma)
|
|
hsv.hue = 0.0;
|
|
else if (max == r)
|
|
hsv.hue = (60.0 * ((g - b) / chroma)) + 360.0;
|
|
else if (max == g)
|
|
hsv.hue = (60.0 * ((b - r) / chroma)) + 120.0;
|
|
else
|
|
hsv.hue = (60.0 * ((r - g) / chroma)) + 240.0;
|
|
|
|
if (hsv.hue >= 360.0)
|
|
hsv.hue -= 360.0;
|
|
|
|
if (!max)
|
|
hsv.saturation = 0;
|
|
else
|
|
hsv.saturation = chroma / max;
|
|
|
|
hsv.value = max;
|
|
|
|
ASSERT(hsv.hue >= 0.0 && hsv.hue < 360.0);
|
|
ASSERT(hsv.saturation >= 0.0 && hsv.saturation <= 1.0);
|
|
ASSERT(hsv.value >= 0.0 && hsv.value <= 1.0);
|
|
|
|
return hsv;
|
|
}
|
|
|
|
static Color from_hsv(double hue, double saturation, double value)
|
|
{
|
|
return from_hsv({ hue, saturation, value });
|
|
}
|
|
|
|
static Color from_hsv(const HSV& hsv)
|
|
{
|
|
ASSERT(hsv.hue >= 0.0 && hsv.hue < 360.0);
|
|
ASSERT(hsv.saturation >= 0.0 && hsv.saturation <= 1.0);
|
|
ASSERT(hsv.value >= 0.0 && hsv.value <= 1.0);
|
|
|
|
double hue = hsv.hue;
|
|
double saturation = hsv.saturation;
|
|
double value = hsv.value;
|
|
|
|
int high = static_cast<int>(hue / 60.0) % 6;
|
|
double f = (hue / 60.0) - high;
|
|
double c1 = value * (1.0 - saturation);
|
|
double c2 = value * (1.0 - saturation * f);
|
|
double c3 = value * (1.0 - saturation * (1.0 - f));
|
|
|
|
double r = 0;
|
|
double g = 0;
|
|
double b = 0;
|
|
|
|
switch (high) {
|
|
case 0:
|
|
r = value;
|
|
g = c3;
|
|
b = c1;
|
|
break;
|
|
case 1:
|
|
r = c2;
|
|
g = value;
|
|
b = c1;
|
|
break;
|
|
case 2:
|
|
r = c1;
|
|
g = value;
|
|
b = c3;
|
|
break;
|
|
case 3:
|
|
r = c1;
|
|
g = c2;
|
|
b = value;
|
|
break;
|
|
case 4:
|
|
r = c3;
|
|
g = c1;
|
|
b = value;
|
|
break;
|
|
case 5:
|
|
r = value;
|
|
g = c1;
|
|
b = c2;
|
|
break;
|
|
}
|
|
|
|
u8 out_r = (u8)(r * 255);
|
|
u8 out_g = (u8)(g * 255);
|
|
u8 out_b = (u8)(b * 255);
|
|
return Color(out_r, out_g, out_b);
|
|
}
|
|
|
|
private:
|
|
constexpr explicit Color(RGBA32 rgba)
|
|
: m_value(rgba)
|
|
{
|
|
}
|
|
|
|
RGBA32 m_value { 0 };
|
|
};
|
|
|
|
const LogStream& operator<<(const LogStream&, Color);
|
|
|
|
}
|
|
|
|
using Gfx::Color;
|
|
|
|
namespace IPC {
|
|
bool encode(Encoder&, const Gfx::Color&);
|
|
bool decode(Decoder&, Gfx::Color&);
|
|
}
|