394 lines
13 KiB
C
394 lines
13 KiB
C
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// This file is part of Blend2D project <https://blend2d.com>
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//
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// See blend2d.h or LICENSE.md for license and copyright information
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// SPDX-License-Identifier: Zlib
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#ifndef BLEND2D_RGBA_H_INCLUDED
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#define BLEND2D_RGBA_H_INCLUDED
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#include "api.h"
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//! \addtogroup blend2d_api_styling
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//! \{
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//! 32-bit RGBA color (8-bit per component) stored as `0xAARRGGBB`.
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struct BLRgba32 {
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//! Packed 32-bit RGBA value.
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uint32_t value;
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#ifdef __cplusplus
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//! \name Construction & Destruction
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//! \{
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BL_INLINE_NODEBUG BLRgba32() noexcept = default;
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BL_INLINE_NODEBUG constexpr BLRgba32(const BLRgba32&) noexcept = default;
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BL_INLINE_NODEBUG constexpr explicit BLRgba32(uint32_t rgba32) noexcept : value(rgba32) {}
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BL_INLINE_NODEBUG explicit BLRgba32(const BLRgba64& rgba64) noexcept { reset(rgba64); }
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BL_INLINE_NODEBUG constexpr BLRgba32(uint32_t r, uint32_t g, uint32_t b, uint32_t a = 0xFFu) noexcept
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: value((r << 16) | (g << 8) | b | (a << 24)) {}
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//! \}
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//! \name Overloaded Operators
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//! \{
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BL_INLINE_NODEBUG constexpr explicit operator bool() const noexcept { return value != 0; }
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BL_INLINE_NODEBUG BLRgba32& operator=(const BLRgba32& other) noexcept = default;
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BL_NODISCARD
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BL_INLINE_NODEBUG constexpr bool operator==(const BLRgba32& other) const noexcept { return equals(other); }
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BL_NODISCARD
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BL_INLINE_NODEBUG constexpr bool operator!=(const BLRgba32& other) const noexcept { return !equals(other); }
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//! \}
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//! \name Accessors
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//! \{
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BL_INLINE_NODEBUG constexpr uint32_t r() const noexcept { return (value >> 16) & 0xFFu; }
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BL_INLINE_NODEBUG constexpr uint32_t g() const noexcept { return (value >> 8) & 0xFFu; }
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BL_INLINE_NODEBUG constexpr uint32_t b() const noexcept { return (value >> 0) & 0xFFu; }
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BL_INLINE_NODEBUG constexpr uint32_t a() const noexcept { return (value >> 24); }
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BL_INLINE_NODEBUG void setR(uint32_t r) noexcept { value = (value & 0xFF00FFFFu) | (r << 16); }
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BL_INLINE_NODEBUG void setG(uint32_t g) noexcept { value = (value & 0xFFFF00FFu) | (g << 8); }
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BL_INLINE_NODEBUG void setB(uint32_t b) noexcept { value = (value & 0xFFFFFF00u) | (b << 0); }
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BL_INLINE_NODEBUG void setA(uint32_t a) noexcept { value = (value & 0x00FFFFFFu) | (a << 24); }
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//! \}
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//! \name Common Functionality
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//! \{
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BL_INLINE_NODEBUG void reset() noexcept { value = 0u; }
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BL_INLINE_NODEBUG void reset(uint32_t rgba32) noexcept { value = rgba32;}
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BL_INLINE_NODEBUG void reset(uint32_t r, uint32_t g, uint32_t b, uint32_t a = 0xFFu) noexcept {
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value = (r << 16) | (g << 8) | b | (a << 24);
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}
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BL_INLINE_NODEBUG void reset(const BLRgba32& rgba32) noexcept {
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value = rgba32.value;
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}
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BL_INLINE_NODEBUG void reset(const BLRgba64& rgba64) noexcept;
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BL_NODISCARD
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BL_INLINE_NODEBUG constexpr bool equals(const BLRgba32& other) const noexcept { return value == other.value; }
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//! \}
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//! \name Utilities
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//! \{
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//! Tests whether the color is fully-opaque (alpha equals 0xFFFF).
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BL_NODISCARD
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BL_INLINE_NODEBUG constexpr bool isOpaque() const noexcept { return value >= 0xFF000000u; }
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//! Tests whether the color is fully-transparent (alpha equals 0).
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BL_NODISCARD
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BL_INLINE_NODEBUG constexpr bool isTransparent() const noexcept { return value <= 0x00FFFFFFu; }
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//! \}
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#endif
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};
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//! 64-bit RGBA color (16-bit per component) stored as `0xAAAARRRRGGGGBBBB`.
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struct BLRgba64 {
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//! Packed 64-bit RGBA value.
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uint64_t value;
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#ifdef __cplusplus
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//! \name Construction & Destruction
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//! \{
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BL_INLINE_NODEBUG BLRgba64() noexcept = default;
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BL_INLINE_NODEBUG constexpr BLRgba64(const BLRgba64&) noexcept = default;
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BL_INLINE_NODEBUG constexpr explicit BLRgba64(uint64_t rgba64) noexcept : value(rgba64) {}
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BL_INLINE_NODEBUG constexpr BLRgba64(uint32_t r, uint32_t g, uint32_t b, uint32_t a = 0xFFFFu) noexcept
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: value((uint64_t(a) << 48) |
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(uint64_t(r) << 32) |
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(uint64_t(g) << 16) |
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(uint64_t(b) << 0) ) {}
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BL_INLINE_NODEBUG constexpr explicit BLRgba64(const BLRgba32& rgba32) noexcept
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: value(((uint64_t(rgba32.r()) << 32) |
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(uint64_t(rgba32.g()) << 16) |
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(uint64_t(rgba32.b()) << 0) |
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(uint64_t(rgba32.a()) << 48)) * 0x0101u) {}
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//! \}
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//! \name Overloaded Operators
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//! \{
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BL_INLINE_NODEBUG constexpr explicit operator bool() const noexcept { return value != 0; }
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BL_INLINE_NODEBUG BLRgba64& operator=(const BLRgba64& other) noexcept = default;
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BL_NODISCARD
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BL_INLINE_NODEBUG constexpr bool operator==(const BLRgba64& other) const noexcept { return equals(other); }
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BL_NODISCARD
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BL_INLINE_NODEBUG constexpr bool operator!=(const BLRgba64& other) const noexcept { return !equals(other); }
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//! \}
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//! \name Accessors
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//! \{
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BL_INLINE_NODEBUG constexpr uint32_t r() const noexcept { return uint32_t((value >> 32) & 0xFFFFu); }
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BL_INLINE_NODEBUG constexpr uint32_t g() const noexcept { return uint32_t((value >> 16) & 0xFFFFu); }
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BL_INLINE_NODEBUG constexpr uint32_t b() const noexcept { return uint32_t((value >> 0) & 0xFFFFu); }
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BL_INLINE_NODEBUG constexpr uint32_t a() const noexcept { return uint32_t((value >> 48)); }
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BL_INLINE_NODEBUG void setR(uint32_t r) noexcept { value = (value & 0xFFFF0000FFFFFFFFu) | (uint64_t(r) << 32); }
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BL_INLINE_NODEBUG void setG(uint32_t g) noexcept { value = (value & 0xFFFFFFFF0000FFFFu) | (uint64_t(g) << 16); }
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BL_INLINE_NODEBUG void setB(uint32_t b) noexcept { value = (value & 0xFFFFFFFFFFFF0000u) | (uint64_t(b) << 0); }
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BL_INLINE_NODEBUG void setA(uint32_t a) noexcept { value = (value & 0x0000FFFFFFFFFFFFu) | (uint64_t(a) << 48); }
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//! \}
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//! \name Common Functionality
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//! \{
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BL_INLINE_NODEBUG void reset() noexcept { value = 0u; }
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BL_INLINE_NODEBUG void reset(uint64_t rgba64) noexcept { value = rgba64; }
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BL_INLINE_NODEBUG void reset(uint32_t r, uint32_t g, uint32_t b, uint32_t a = 0xFFFFu) noexcept {
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value = (uint64_t(r) << 32) |
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(uint64_t(g) << 16) |
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(uint64_t(b) << 0) |
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(uint64_t(a) << 48);
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}
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BL_INLINE_NODEBUG void reset(const BLRgba64& rgba64) noexcept {
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value = rgba64.value;
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}
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BL_INLINE_NODEBUG void reset(const BLRgba32& rgba32) noexcept {
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value = ((uint64_t(rgba32.r()) << 32) |
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(uint64_t(rgba32.g()) << 16) |
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(uint64_t(rgba32.b()) << 0) |
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(uint64_t(rgba32.a()) << 48)) * 0x0101u;
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}
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BL_NODISCARD
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BL_INLINE_NODEBUG constexpr bool equals(const BLRgba64& other) const noexcept { return value == other.value; }
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//! \}
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//! \name Utilities
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//! \{
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//! Tests whether the color is fully-opaque (alpha equals 0xFFFF).
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BL_NODISCARD
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BL_INLINE_NODEBUG constexpr bool isOpaque() const noexcept { return value >= 0xFFFF000000000000u; }
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//! Tests whether the color is fully-transparent (alpha equals 0).
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BL_NODISCARD
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BL_INLINE_NODEBUG constexpr bool isTransparent() const noexcept { return value <= 0x0000FFFFFFFFFFFFu; }
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//! \}
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#endif
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};
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//! 128-bit RGBA color stored as 4 32-bit floating point values in [RGBA] order.
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struct BLRgba {
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//! Red component.
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float r;
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//! Green component.
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float g;
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//! Blur component.
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float b;
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//! Alpha component.
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float a;
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#ifdef __cplusplus
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//! \name Construction & Destruction
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//! \{
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BL_INLINE_NODEBUG BLRgba() noexcept = default;
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BL_INLINE_NODEBUG constexpr BLRgba(const BLRgba&) noexcept = default;
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BL_INLINE_NODEBUG constexpr BLRgba(float rValue, float gValue, float bValue, float aValue = 1.0f) noexcept
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: r(rValue),
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g(gValue),
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b(bValue),
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a(aValue) {}
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BL_INLINE_NODEBUG constexpr BLRgba(const BLRgba32& rgba32) noexcept
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: r(float(int32_t(rgba32.r())) * (1.0f / 255.0f)),
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g(float(int32_t(rgba32.g())) * (1.0f / 255.0f)),
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b(float(int32_t(rgba32.b())) * (1.0f / 255.0f)),
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a(float(int32_t(rgba32.a())) * (1.0f / 255.0f)) {}
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BL_INLINE_NODEBUG constexpr BLRgba(const BLRgba64& rgba64) noexcept
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: r(float(int32_t(rgba64.r())) * (1.0f / 65535.0f)),
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g(float(int32_t(rgba64.g())) * (1.0f / 65535.0f)),
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b(float(int32_t(rgba64.b())) * (1.0f / 65535.0f)),
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a(float(int32_t(rgba64.a())) * (1.0f / 65535.0f)) {}
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//! \}
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//! \name Overloaded Operators
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//! \{
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BL_INLINE_NODEBUG constexpr explicit operator bool() const noexcept {
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return !((r == 0.0f) & (g == 0.0f) & (b == 0.0f) & (a == 0.0f));
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}
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BL_INLINE_NODEBUG BLRgba& operator=(const BLRgba& other) noexcept = default;
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BL_NODISCARD
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BL_INLINE_NODEBUG bool operator==(const BLRgba& other) const noexcept { return equals(other); }
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BL_NODISCARD
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BL_INLINE_NODEBUG bool operator!=(const BLRgba& other) const noexcept { return !equals(other); }
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//! \}
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//! \name Common Functionality
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//! \{
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BL_INLINE_NODEBUG void reset() noexcept {
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reset(0.0f, 0.0f, 0.0f, 0.0f);
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}
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BL_INLINE_NODEBUG void reset(const BLRgba32& rgba32) noexcept {
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*this = BLRgba(rgba32);
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}
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BL_INLINE_NODEBUG void reset(const BLRgba64& rgba64) noexcept {
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*this = BLRgba(rgba64);
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}
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BL_INLINE_NODEBUG void reset(const BLRgba& other) noexcept {
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reset(other.r, other.g, other.b, other.a);
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}
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BL_INLINE_NODEBUG void reset(float rValue, float gValue, float bValue, float aValue = 1.0f) noexcept {
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this->r = rValue;
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this->g = gValue;
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this->b = bValue;
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this->a = aValue;
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}
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BL_NODISCARD
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BL_INLINE_NODEBUG bool equals(const BLRgba32& rgba32) const noexcept {
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return equals(BLRgba(rgba32));
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}
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BL_NODISCARD
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BL_INLINE_NODEBUG bool equals(const BLRgba64& rgba64) const noexcept {
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return equals(BLRgba(rgba64));
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}
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BL_NODISCARD
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BL_INLINE_NODEBUG bool equals(const BLRgba& other) const noexcept {
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return bool(unsigned(blEquals(this->r, other.r)) &
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unsigned(blEquals(this->g, other.g)) &
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unsigned(blEquals(this->b, other.b)) &
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unsigned(blEquals(this->a, other.a)));
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}
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BL_NODISCARD
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BL_INLINE_NODEBUG bool equals(float rValue, float gValue, float bValue, float aValue = 1.0f) const noexcept {
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return bool(unsigned(blEquals(this->r, rValue)) &
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unsigned(blEquals(this->g, gValue)) &
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unsigned(blEquals(this->b, bValue)) &
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unsigned(blEquals(this->a, aValue)));
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}
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//! \}
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//! \name Conversion
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//! \{
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BL_INLINE_NODEBUG BLRgba32 toRgba32() const noexcept {
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return BLRgba32(uint32_t(int(blClamp(r, 0.0f, 1.0f) * 255.0f + 0.5f)),
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uint32_t(int(blClamp(g, 0.0f, 1.0f) * 255.0f + 0.5f)),
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uint32_t(int(blClamp(b, 0.0f, 1.0f) * 255.0f + 0.5f)),
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uint32_t(int(blClamp(a, 0.0f, 1.0f) * 255.0f + 0.5f)));
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}
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BL_INLINE_NODEBUG BLRgba64 toRgba64() const noexcept {
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return BLRgba64(uint32_t(int(blClamp(r, 0.0f, 1.0f) * 65535.0f + 0.5f)),
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uint32_t(int(blClamp(g, 0.0f, 1.0f) * 65535.0f + 0.5f)),
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uint32_t(int(blClamp(b, 0.0f, 1.0f) * 65535.0f + 0.5f)),
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uint32_t(int(blClamp(a, 0.0f, 1.0f) * 65535.0f + 0.5f)));
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}
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//! \}
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//! \name Utilities
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//! \{
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//! Tests whether the color is fully-opaque (alpha equals 1.0).
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BL_NODISCARD
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||
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|
BL_INLINE_NODEBUG constexpr bool isOpaque() const noexcept { return a >= 1.0; }
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|
|
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||
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|
//! Tests whether the color is fully-transparent (alpha equals 0.0).
|
||
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BL_NODISCARD
|
||
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|
BL_INLINE_NODEBUG constexpr bool isTransparent() const noexcept { return a <= 0.0; }
|
||
|
|
|
||
|
|
//! \}
|
||
|
|
#endif
|
||
|
|
};
|
||
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|
|
||
|
|
#ifdef __cplusplus
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||
|
|
BL_INLINE_NODEBUG void BLRgba32::reset(const BLRgba64& rgba64) noexcept {
|
||
|
|
reset(uint32_t((rgba64.value >> 40) & 0xFF),
|
||
|
|
uint32_t((rgba64.value >> 24) & 0xFF),
|
||
|
|
uint32_t((rgba64.value >> 8) & 0xFF),
|
||
|
|
uint32_t((rgba64.value >> 56) ));
|
||
|
|
}
|
||
|
|
|
||
|
|
static BL_INLINE_NODEBUG constexpr BLRgba32 blMin(const BLRgba32& a, const BLRgba32& b) noexcept {
|
||
|
|
return BLRgba32(blMin(a.r(), b.r()), blMin(a.g(), b.g()), blMin(a.b(), b.b()), blMin(a.a(), b.a()));
|
||
|
|
}
|
||
|
|
|
||
|
|
static BL_INLINE_NODEBUG constexpr BLRgba32 blMax(const BLRgba32& a, const BLRgba32& b) noexcept {
|
||
|
|
return BLRgba32(blMax(a.r(), b.r()), blMax(a.g(), b.g()), blMax(a.b(), b.b()), blMax(a.a(), b.a()));
|
||
|
|
}
|
||
|
|
|
||
|
|
BL_NODISCARD
|
||
|
|
static BL_INLINE_NODEBUG constexpr BLRgba64 blMin(const BLRgba64& a, const BLRgba64& b) noexcept {
|
||
|
|
return BLRgba64(blMin(a.r(), b.r()), blMin(a.g(), b.g()), blMin(a.b(), b.b()), blMin(a.a(), b.a()));
|
||
|
|
}
|
||
|
|
|
||
|
|
BL_NODISCARD
|
||
|
|
static BL_INLINE_NODEBUG constexpr BLRgba64 blMax(const BLRgba64& a, const BLRgba64& b) noexcept {
|
||
|
|
return BLRgba64(blMax(a.r(), b.r()), blMax(a.g(), b.g()), blMax(a.b(), b.b()), blMax(a.a(), b.a()));
|
||
|
|
}
|
||
|
|
|
||
|
|
BL_NODISCARD
|
||
|
|
static BL_INLINE_NODEBUG constexpr BLRgba blMin(const BLRgba& a, const BLRgba& b) noexcept {
|
||
|
|
return BLRgba(blMin(a.r, b.r), blMin(a.g, b.g), blMin(a.b, b.b), blMin(a.a, b.a));
|
||
|
|
}
|
||
|
|
|
||
|
|
BL_NODISCARD
|
||
|
|
static BL_INLINE_NODEBUG constexpr BLRgba blMax(const BLRgba& a, const BLRgba& b) noexcept {
|
||
|
|
return BLRgba(blMax(a.r, b.r), blMax(a.g, b.g), blMax(a.b, b.b), blMax(a.a, b.a));
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
static_assert(sizeof(BLRgba) == 16, "'BLRgba' struct must be exactly 16 bytes long");
|
||
|
|
static_assert(sizeof(BLRgba32) == 4, "'BLRgba32' struct must be exactly 4 bytes long");
|
||
|
|
static_assert(sizeof(BLRgba64) == 8, "'BLRgba64' struct must be exactly 8 bytes long");
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//! \}
|
||
|
|
|
||
|
|
#endif // BLEND2D_RGBA_H_INCLUDED
|