Program Listing for File sixtyfps_brush.h
↰ Return to documentation for file (/home/runner/work/sixtyfps/sixtyfps/api/sixtyfps-cpp/include/sixtyfps_brush.h
)
/* LICENSE BEGIN
This file is part of the SixtyFPS Project -- https://sixtyfps.io
Copyright (c) 2021 Olivier Goffart <olivier.goffart@sixtyfps.io>
Copyright (c) 2021 Simon Hausmann <simon.hausmann@sixtyfps.io>
SPDX-License-Identifier: GPL-3.0-only
This file is also available under commercial licensing terms.
Please contact info@sixtyfps.io for more information.
LICENSE END */
#pragma once
#include <string_view>
#include "sixtyfps_color.h"
#include "sixtyfps_brush_internal.h"
#include "sixtyfps_string.h"
namespace sixtyfps {
namespace private_api {
using cbindgen_private::types::GradientStop;
class LinearGradientBrush
{
public:
LinearGradientBrush() = default;
LinearGradientBrush(float angle, const GradientStop *firstStop, int stopCount)
: inner(make_linear_gradient(angle, firstStop, stopCount))
{
}
float angle() const
{
// The gradient's first stop is a fake stop to store the angle
return inner[0].position;
}
int stopCount() const { return int(inner.size()) - 1; }
const GradientStop *stopsBegin() const { return inner.begin() + 1; }
const GradientStop *stopsEnd() const { return inner.end(); }
private:
cbindgen_private::types::LinearGradientBrush inner;
friend class sixtyfps::Brush;
static SharedVector<private_api::GradientStop>
make_linear_gradient(float angle, const GradientStop *firstStop, int stopCount)
{
SharedVector<private_api::GradientStop> gradient;
gradient.push_back({ Color::from_argb_encoded(0).inner, angle });
for (int i = 0; i < stopCount; ++i, ++firstStop)
gradient.push_back(*firstStop);
return gradient;
}
};
}
class Brush
{
public:
Brush() : Brush(Color {}) { }
Brush(const Color &color) : data(Inner::SolidColor(color.inner)) { }
Brush(const private_api::LinearGradientBrush &gradient)
: data(Inner::LinearGradient(gradient.inner))
{
}
inline Color color() const;
friend bool operator==(const Brush &a, const Brush &b) { return a.data == b.data; }
friend bool operator!=(const Brush &a, const Brush &b) { return a.data != b.data; }
private:
using Tag = cbindgen_private::types::Brush::Tag;
using Inner = cbindgen_private::types::Brush;
Inner data;
};
Color Brush::color() const
{
Color result;
switch (data.tag) {
case Tag::SolidColor: {
result.inner = data.solid_color._0;
break;
}
case Tag::LinearGradient:
if (data.linear_gradient._0.size() > 1) {
result.inner = data.linear_gradient._0[1].color;
}
break;
}
return result;
}
}