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LibGfx: Delete unused paint styles

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These are no longer used after we've switched to using Skia.
This commit is contained in:
Aliaksandr Kalenik 2024-11-11 00:19:03 +01:00 committed by Alexander Kalenik
parent 6862d33e7c
commit 1e05457cd1
Notes: github-actions[bot] 2024-11-11 01:47:35 +00:00 
Author: https://github.com/kalenikaliaksandr
Commit: https://github.com/LadybirdBrowser/ladybird/commit/1e05457cd16
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2277
2 changed files with 0 additions and 198 deletions
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81
Libraries/LibGfx/GradientPainting.cpp
View file

@ -194,29 +194,6 @@ private:
TransformFunction m_transform_function;
};
static auto create_linear_gradient(IntRect const& physical_rect, ReadonlySpan<ColorStop> color_stops, float angle, Optional<float> repeat_length)
{
float normalized_angle = normalized_gradient_angle_radians(angle);
float sin_angle, cos_angle;
AK::sincos(normalized_angle, sin_angle, cos_angle);
// Full length of the gradient
auto gradient_length = calculate_gradient_length(physical_rect.size(), sin_angle, cos_angle);
IntPoint offset { cos_angle * (gradient_length / 2), sin_angle * (gradient_length / 2) };
auto center = physical_rect.translated(-physical_rect.location()).center();
auto start_point = center - offset;
// Rotate gradient line to be horizontal
auto rotated_start_point_x = start_point.x() * cos_angle - start_point.y() * -sin_angle;
GradientLine gradient_line(gradient_length, color_stops, repeat_length);
return Gradient {
move(gradient_line),
[=](int x, int y) {
return (x * cos_angle - (physical_rect.height() - y) * -sin_angle) - rotated_start_point_x;
}
};
}
static auto create_conic_gradient(ReadonlySpan<ColorStop> color_stops, FloatPoint center_point, float start_angle, Optional<float> repeat_length, AlphaType alpha_type = AlphaType::Premultiplied)
{
// FIXME: Do we need/want sub-degree accuracy for the gradient line?
@ -242,64 +219,6 @@ static auto create_conic_gradient(ReadonlySpan<ColorStop> color_stops, FloatPoin
};
}
static auto create_radial_gradient(IntRect const& physical_rect, ReadonlySpan<ColorStop> color_stops, IntPoint center, IntSize size, Optional<float> repeat_length, Optional<float> rotation_angle = {})
{
// A conservative guesstimate on how many colors we need to generate:
auto max_dimension = max(physical_rect.width(), physical_rect.height());
auto max_visible_gradient = max(max_dimension / 2, min(size.width(), max_dimension));
GradientLine gradient_line(max_visible_gradient, color_stops, repeat_length);
auto center_point = FloatPoint { center }.translated(0.5, 0.5);
AffineTransform rotation_transform;
if (rotation_angle.has_value()) {
auto angle_as_radians = AK::to_radians(rotation_angle.value());
rotation_transform.rotate_radians(angle_as_radians);
}
return Gradient {
move(gradient_line),
[=](int x, int y) {
// FIXME: See if there's a more efficient calculation we do there :^)
auto point = FloatPoint(x, y) - center_point;
if (rotation_angle.has_value())
point.transform_by(rotation_transform);
auto gradient_x = point.x() / size.width();
auto gradient_y = point.y() / size.height();
return AK::sqrt(gradient_x * gradient_x + gradient_y * gradient_y) * max_visible_gradient;
}
};
}
static FloatPoint pixel_center(IntPoint point)
{
return point.to_type<float>().translated(0.5f, 0.5f);
}
// TODO: Figure out how to handle scale() here... Not important while not supported by fill_path()
void LinearGradientPaintStyle::paint(IntRect physical_bounding_box, PaintFunction paint) const
{
VERIFY(color_stops().size() > 2);
auto linear_gradient = create_linear_gradient(physical_bounding_box, color_stops(), m_angle, repeat_length());
paint(linear_gradient.sample_function());
}
void ConicGradientPaintStyle::paint(IntRect physical_bounding_box, PaintFunction paint) const
{
VERIFY(color_stops().size() > 2);
(void)physical_bounding_box;
auto conic_gradient = create_conic_gradient(color_stops(), pixel_center(m_center), m_start_angle, repeat_length());
paint(conic_gradient.sample_function());
}
void RadialGradientPaintStyle::paint(IntRect physical_bounding_box, PaintFunction paint) const
{
VERIFY(color_stops().size() > 2);
auto radial_gradient = create_radial_gradient(physical_bounding_box, color_stops(), m_center, m_size, repeat_length());
paint(radial_gradient.sample_function());
}
// The following implements the gradient fill/stoke styles for the HTML canvas: https://html.spec.whatwg.org/multipage/canvas.html#fill-and-stroke-styles
static auto make_sample_non_relative(IntPoint draw_location, auto sample)

117
Libraries/LibGfx/PaintStyle.h
View file

@ -57,62 +57,6 @@ private:
Color m_color;
};
class BitmapPaintStyle : public PaintStyle {
public:
static ErrorOr<NonnullRefPtr<BitmapPaintStyle>> create(Bitmap const& bitmap, IntPoint offset = {})
{
return adopt_nonnull_ref_or_enomem(new (nothrow) BitmapPaintStyle(bitmap, offset));
}
virtual Color sample_color(IntPoint point) const override
{
point += m_offset;
if (m_bitmap->rect().contains(point))
return m_bitmap->get_pixel(point);
return Color();
}
private:
BitmapPaintStyle(Bitmap const& bitmap, IntPoint offset)
: m_bitmap(bitmap)
, m_offset(offset)
{
}
NonnullRefPtr<Bitmap const> m_bitmap;
IntPoint m_offset;
};
class RepeatingBitmapPaintStyle : public Gfx::PaintStyle {
public:
static ErrorOr<NonnullRefPtr<RepeatingBitmapPaintStyle>> create(Gfx::Bitmap const& bitmap, Gfx::IntPoint steps, Color fallback)
{
return adopt_nonnull_ref_or_enomem(new (nothrow) RepeatingBitmapPaintStyle(bitmap, steps, fallback));
}
virtual Color sample_color(Gfx::IntPoint point) const override
{
point.set_x(point.x() % m_steps.x());
point.set_y(point.y() % m_steps.y());
if (point.x() < 0 || point.y() < 0 || point.x() >= m_bitmap->width() || point.y() >= m_bitmap->height())
return m_fallback;
auto px = m_bitmap->get_pixel(point);
return px;
}
private:
RepeatingBitmapPaintStyle(Gfx::Bitmap const& bitmap, Gfx::IntPoint steps, Color fallback)
: m_bitmap(bitmap)
, m_steps(steps)
, m_fallback(fallback)
{
}
NonnullRefPtr<Gfx::Bitmap const> m_bitmap;
Gfx::IntPoint m_steps;
Color m_fallback;
};
class GradientPaintStyle : public PaintStyle {
public:
ErrorOr<void> add_color_stop(float position, Color color, Optional<float> transition_hint = {})
@ -143,67 +87,6 @@ private:
Optional<float> m_repeat_length;
};
// These paint styles are based on the CSS gradients. They are relative to the painted
// shape and support premultiplied alpha.
class LinearGradientPaintStyle final : public GradientPaintStyle {
public:
static ErrorOr<ErrorOr<NonnullRefPtr<LinearGradientPaintStyle>>> create(float angle = 0.0f)
{
return adopt_nonnull_ref_or_enomem(new (nothrow) LinearGradientPaintStyle(angle));
}
private:
virtual void paint(IntRect physical_bounding_box, PaintFunction paint) const override;
LinearGradientPaintStyle(float angle)
: m_angle(angle)
{
}
float m_angle { 0.0f };
};
class ConicGradientPaintStyle final : public GradientPaintStyle {
public:
static ErrorOr<NonnullRefPtr<ConicGradientPaintStyle>> create(IntPoint center, float start_angle = 0.0f)
{
return adopt_nonnull_ref_or_enomem(new (nothrow) ConicGradientPaintStyle(center, start_angle));
}
private:
virtual void paint(IntRect physical_bounding_box, PaintFunction paint) const override;
ConicGradientPaintStyle(IntPoint center, float start_angle)
: m_center(center)
, m_start_angle(start_angle)
{
}
IntPoint m_center;
float m_start_angle { 0.0f };
};
class RadialGradientPaintStyle final : public GradientPaintStyle {
public:
static ErrorOr<NonnullRefPtr<RadialGradientPaintStyle>> create(IntPoint center, IntSize size)
{
return adopt_nonnull_ref_or_enomem(new (nothrow) RadialGradientPaintStyle(center, size));
}
private:
virtual void paint(IntRect physical_bounding_box, PaintFunction paint) const override;
RadialGradientPaintStyle(IntPoint center, IntSize size)
: m_center(center)
, m_size(size)
{
}
IntPoint m_center;
IntSize m_size;
};
// The following paint styles implement the gradients required for the HTML canvas.
// These gradients are (unlike CSS ones) not relative to the painted shape, and do not
// support premultiplied alpha.